(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
const PatchBay = require('./src/patch-bay/pb-live.js')
const HydraSynth = require('hydra-synth')
const Editor = require('./src/editor/editor.js')
const loop = require('raf-loop')
const P5  = require('./src/p5-wrapper.js')
const Gallery  = require('./src/gallery.js')
const Menu = require('./src/menu.js')
const attachEvents = require('./src/attachEvents.js')
const log = require('./src/editor/log.js')
const repl = require('./src/repl.js')

function init () {
  window.pb = pb
  window.P5 = P5

  var canvas = document.getElementById('hydra-canvas')
  // canvas.width = window.innerWidth * window.devicePixelRatio
  // canvas.height = window.innerHeight * window.devicePixelRatio
  canvas.width = window.innerWidth
  canvas.height = window.innerHeight 
  canvas.style.width = '100%'
  canvas.style.height = '100%'
  canvas.style.imageRendering = 'pixelated'

  let isIOS =
  (/iPad|iPhone|iPod/.test(navigator.platform) ||
    (navigator.platform === 'MacIntel' && navigator.maxTouchPoints > 1)) &&
  !window.MSStream;

  let precisionValue = isIOS ? 'highp' : 'mediump'

  var pb = new PatchBay()
  var hydra = new HydraSynth({ pb: pb, canvas: canvas, autoLoop: false,  precision: precisionValue})
  var editor = new Editor()
  var menu = new Menu({ editor: editor, hydra: hydra})
  log.init()

  // get initial code to fill gallery
  var sketches = new Gallery(function(code, sketchFromURL) {
    editor.setValue(code)
    repl.eval(code)

    // if a sketch was found based on the URL parameters, dont show intro window
    if(sketchFromURL) {
      menu.closeModal()
    } else {
      menu.openModal()
    }
  })
  menu.sketches = sketches

  attachEvents ({
    editor: editor,
    gallery: sketches,
    menu: menu,
    repl: repl,
    log: log
  })

  // define extra functions (eventually should be added to hydra-synth?)

 

  pb.init(hydra.captureStream, {
    server: window.location.origin,
    room: 'iclc'
  })

  var engine = loop(function(dt) {
    hydra.tick(dt)
  }).start()

}

window.onload = init

// add extra functions to the web editor
   // hush clears what you see on the screen
  //  window.hush = () => {
  //   solid().out()
  //   solid().out(o1)
  //   solid().out(o2)
  //   solid().out(o3)
  //   render(o0)
  // }

  // window.loadScript = (url = "") => {
  //   const p = new Promise((res, rej) => {
  //     var script = document.createElement("script");
  //     script.onload = function () {
  //       log.log(`loaded script ${url}`);
  //       res();
  //     };
  //     script.onerror = (err) => {
  //       log.log(`error loading script ${url}`, "log-error");
  //       res()
  //     };
  //     script.src = url;
  //     document.head.appendChild(script); 
  //   });
  //   return p;
  // };
},{"./src/attachEvents.js":22,"./src/editor/editor.js":23,"./src/editor/log.js":25,"./src/gallery.js":27,"./src/menu.js":28,"./src/p5-wrapper.js":29,"./src/patch-bay/pb-live.js":30,"./src/repl.js":34,"hydra-synth":3,"raf-loop":127}],2:[function(require,module,exports){
const Output = require('./src/output.js')
const loop = require('raf-loop')
const Source = require('./src/hydra-source.js')
const Mouse = require('./src/lib/mouse.js')()
const Audio = require('./src/lib/audio.js')
const VidRecorder = require('./src/lib/video-recorder.js')
const ArrayUtils = require('./src/lib/array-utils.js')
const Sandbox = require('./src/eval-sandbox.js')

const Generator = require('./src/generator-factory.js')

// to do: add ability to pass in certain uniforms and transforms
class HydraRenderer {

  constructor ({
    pb = null,
    width = 1280,
    height = 720,
    numSources = 4,
    numOutputs = 4,
    makeGlobal = true,
    autoLoop = true,
    detectAudio = true,
    enableStreamCapture = true,
    canvas,
    precision,
    extendTransforms = {} // add your own functions on init
  } = {}) {

    ArrayUtils.init()

    this.pb = pb

    this.width = width
    this.height = height
    this.renderAll = false
    this.detectAudio = detectAudio

    this._initCanvas(canvas)


    // object that contains all properties that will be made available on the global context and during local evaluation
    this.synth = {
      time: 0,
      bpm: 30,
      width: this.width,
      height: this.height,
      fps: undefined,
      stats: {
        fps: 0
      },
      speed: 1,
      mouse: Mouse,
      render: this._render.bind(this),
      setResolution: this.setResolution.bind(this),
      update: (dt) => {},// user defined update function
      hush: this.hush.bind(this)
    }

    if (makeGlobal) window.loadScript = this.loadScript


    this.timeSinceLastUpdate = 0
    this._time = 0 // for internal use, only to use for deciding when to render frames

    // only allow valid precision options
    let precisionOptions = ['lowp','mediump','highp']
    if(precision && precisionOptions.includes(precision.toLowerCase())) {
      this.precision = precision.toLowerCase()
      //
      // if(!precisionValid){
      //   console.warn('[hydra-synth warning]\nConstructor was provided an invalid floating point precision value of "' + precision + '". Using default value of "mediump" instead.')
      // }
    } else {
      let isIOS =
    (/iPad|iPhone|iPod/.test(navigator.platform) ||
      (navigator.platform === 'MacIntel' && navigator.maxTouchPoints > 1)) &&
    !window.MSStream;
      this.precision = isIOS ? 'highp' : 'mediump'
    }



    this.extendTransforms = extendTransforms

    // boolean to store when to save screenshot
    this.saveFrame = false

    // if stream capture is enabled, this object contains the capture stream
    this.captureStream = null

    this.generator = undefined

    this._initRegl()
    this._initOutputs(numOutputs)
    this._initSources(numSources)
    this._generateGlslTransforms()

    this.synth.screencap = () => {
      this.saveFrame = true
    }

    if (enableStreamCapture) {
      try {
        this.captureStream = this.canvas.captureStream(25)
        // to do: enable capture stream of specific sources and outputs
        this.synth.vidRecorder = new VidRecorder(this.captureStream)
      } catch (e) {
        console.warn('[hydra-synth warning]\nnew MediaSource() is not currently supported on iOS.')
        console.error(e)
      }
    }

    if(detectAudio) this._initAudio()

    if(autoLoop) loop(this.tick.bind(this)).start()

    // final argument is properties that the user can set, all others are treated as read-only
    this.sandbox = new Sandbox(this.synth, makeGlobal, ['speed', 'update', 'bpm', 'fps'])
  }

  eval(code) {
    this.sandbox.eval(code)
  }

  getScreenImage(callback) {
    this.imageCallback = callback
    this.saveFrame = true
  }

  hush() {
    this.s.forEach((source) => {
      source.clear()
    })
    this.o.forEach((output) => {
      this.synth.solid(0, 0, 0, 0).out(output)
    })
    this.synth.render(this.o[0])
  }

  loadScript(url = "") {
   const p = new Promise((res, rej) => {
     var script = document.createElement("script");
     script.onload = function () {
       console.log(`loaded script ${url}`);
       res();
     };
     script.onerror = (err) => {
       console.log(`error loading script ${url}`, "log-error");
       res()
     };
     script.src = url;
     document.head.appendChild(script);
   });
   return p;
 }

  setResolution(width, height) {
  //  console.log(width, height)
    this.canvas.width = width
    this.canvas.height = height
    this.width = width // is this necessary?
    this.height = height // ?
    this.sandbox.set('width', width)
    this.sandbox.set('height', height)
    console.log(this.width)
    this.o.forEach((output) => {
      output.resize(width, height)
    })
    this.s.forEach((source) => {
      source.resize(width, height)
    })
    this.regl._refresh()
     console.log(this.canvas.width)
  }

  canvasToImage (callback) {
    const a = document.createElement('a')
    a.style.display = 'none'

    let d = new Date()
    a.download = `hydra-${d.getFullYear()}-${d.getMonth() + 1}-${d.getDate()}-${d.getHours()}.${d.getMinutes()}.${d.getSeconds()}.png`
    document.body.appendChild(a)
    var self = this
    this.canvas.toBlob( (blob) => {
        if(self.imageCallback){
          self.imageCallback(blob)
          delete self.imageCallback
        } else {
          a.href = URL.createObjectURL(blob)
          console.log(a.href)
          a.click()
        }
    }, 'image/png')
    setTimeout(() => {
      document.body.removeChild(a);
      window.URL.revokeObjectURL(a.href);
    }, 300);
  }

  _initAudio () {
    const that = this
    this.synth.a = new Audio({
      numBins: 4,
      // changeListener: ({audio}) => {
      //   that.a = audio.bins.map((_, index) =>
      //     (scale = 1, offset = 0) => () => (audio.fft[index] * scale + offset)
      //   )
      //
      //   if (that.makeGlobal) {
      //     that.a.forEach((a, index) => {
      //       const aname = `a${index}`
      //       window[aname] = a
      //     })
      //   }
      // }
    })
  }

  // create main output canvas and add to screen
  _initCanvas (canvas) {
    if (canvas) {
      this.canvas = canvas
      this.width = canvas.width
      this.height = canvas.height
    } else {
      this.canvas = document.createElement('canvas')
      this.canvas.width = this.width
      this.canvas.height = this.height
      this.canvas.style.width = '100%'
      this.canvas.style.height = '100%'
      this.canvas.style.imageRendering = 'pixelated'
      document.body.appendChild(this.canvas)
    }
  }

  _initRegl () {
    this.regl = require('regl')({
    //  profile: true,
      canvas: this.canvas,
      pixelRatio: 1//,
      // extensions: [
      //   'oes_texture_half_float',
      //   'oes_texture_half_float_linear'
      // ],
      // optionalExtensions: [
      //   'oes_texture_float',
      //   'oes_texture_float_linear'
     //]
   })

    // This clears the color buffer to black and the depth buffer to 1
    this.regl.clear({
      color: [0, 0, 0, 1]
    })

    this.renderAll = this.regl({
      frag: `
      precision ${this.precision} float;
      varying vec2 uv;
      uniform sampler2D tex0;
      uniform sampler2D tex1;
      uniform sampler2D tex2;
      uniform sampler2D tex3;

      void main () {
        vec2 st = vec2(1.0 - uv.x, uv.y);
        st*= vec2(2);
        vec2 q = floor(st).xy*(vec2(2.0, 1.0));
        int quad = int(q.x) + int(q.y);
        st.x += step(1., mod(st.y,2.0));
        st.y += step(1., mod(st.x,2.0));
        st = fract(st);
        if(quad==0){
          gl_FragColor = texture2D(tex0, st);
        } else if(quad==1){
          gl_FragColor = texture2D(tex1, st);
        } else if (quad==2){
          gl_FragColor = texture2D(tex2, st);
        } else {
          gl_FragColor = texture2D(tex3, st);
        }

      }
      `,
      vert: `
      precision ${this.precision} float;
      attribute vec2 position;
      varying vec2 uv;

      void main () {
        uv = position;
        gl_Position = vec4(1.0 - 2.0 * position, 0, 1);
      }`,
      attributes: {
        position: [
          [-2, 0],
          [0, -2],
          [2, 2]
        ]
      },
      uniforms: {
        tex0: this.regl.prop('tex0'),
        tex1: this.regl.prop('tex1'),
        tex2: this.regl.prop('tex2'),
        tex3: this.regl.prop('tex3')
      },
      count: 3,
      depth: { enable: false }
    })

    this.renderFbo = this.regl({
      frag: `
      precision ${this.precision} float;
      varying vec2 uv;
      uniform vec2 resolution;
      uniform sampler2D tex0;

      void main () {
        gl_FragColor = texture2D(tex0, vec2(1.0 - uv.x, uv.y));
      }
      `,
      vert: `
      precision ${this.precision} float;
      attribute vec2 position;
      varying vec2 uv;

      void main () {
        uv = position;
        gl_Position = vec4(1.0 - 2.0 * position, 0, 1);
      }`,
      attributes: {
        position: [
          [-2, 0],
          [0, -2],
          [2, 2]
        ]
      },
      uniforms: {
        tex0: this.regl.prop('tex0'),
        resolution: this.regl.prop('resolution')
      },
      count: 3,
      depth: { enable: false }
    })
  }

  _initOutputs (numOutputs) {
    const self = this
    this.o = (Array(numOutputs)).fill().map((el, index) => {
      var o = new Output({
        regl: this.regl,
        width: this.width,
        height: this.height,
        precision: this.precision,
        label: `o${index}`
      })
    //  o.render()
      o.id = index
      self.synth['o'+index] = o
      return o
    })

    // set default output
    this.output = this.o[0]
  }

  _initSources (numSources) {
    this.s = []
    for(var i = 0; i < numSources; i++) {
      this.createSource(i)
    }
  }

  createSource (i) {
    let s = new Source({regl: this.regl, pb: this.pb, width: this.width, height: this.height, label: `s${i}`})
    this.synth['s' + this.s.length] = s
    this.s.push(s)
    return s
  }

  _generateGlslTransforms () {
    var self = this
    this.generator = new Generator({
      defaultOutput: this.o[0],
      defaultUniforms: this.o[0].uniforms,
      extendTransforms: this.extendTransforms,
      changeListener: ({type, method, synth}) => {
          if (type === 'add') {
            self.synth[method] = synth.generators[method]
            if(self.sandbox) self.sandbox.add(method)
          } else if (type === 'remove') {
            // what to do here? dangerously deleting window methods
            //delete window[method]
          }
      //  }
      }
    })
    this.synth.setFunction = this.generator.setFunction.bind(this.generator)
  }

  _render (output) {
    if (output) {
      this.output = output
      this.isRenderingAll = false
    } else {
      this.isRenderingAll = true
    }
  }

  // dt in ms
  tick (dt, uniforms) {
    this.sandbox.tick()
    if(this.detectAudio === true) this.synth.a.tick()
  //  let updateInterval = 1000/this.synth.fps // ms
    if(this.synth.update) {
      try { this.synth.update(dt) } catch (e) { console.log(error) }
    }

    this.sandbox.set('time', this.synth.time += dt * 0.001 * this.synth.speed)
    this.timeSinceLastUpdate += dt
    if(!this.synth.fps || this.timeSinceLastUpdate >= 1000/this.synth.fps) {
    //  console.log(1000/this.timeSinceLastUpdate)
      this.synth.stats.fps = Math.ceil(1000/this.timeSinceLastUpdate)
    //  console.log(this.synth.speed, this.synth.time)
      for (let i = 0; i < this.s.length; i++) {
        this.s[i].tick(this.synth.time)
      }
    //  console.log(this.canvas.width, this.canvas.height)
      for (let i = 0; i < this.o.length; i++) {
        this.o[i].tick({
          time: this.synth.time,
          mouse: this.synth.mouse,
          bpm: this.synth.bpm,
          resolution: [this.canvas.width, this.canvas.height]
        })
      }
      if (this.isRenderingAll) {
        this.renderAll({
          tex0: this.o[0].getCurrent(),
          tex1: this.o[1].getCurrent(),
          tex2: this.o[2].getCurrent(),
          tex3: this.o[3].getCurrent(),
          resolution: [this.canvas.width, this.canvas.height]
        })
      } else {

        this.renderFbo({
          tex0: this.output.getCurrent(),
          resolution: [this.canvas.width, this.canvas.height]
        })
      }
      this.timeSinceLastUpdate = 0
    }
    if(this.saveFrame === true) {
      this.canvasToImage()
      this.saveFrame = false
    }
  //  this.regl.poll()
  }


}

module.exports = HydraRenderer

},{"./src/eval-sandbox.js":4,"./src/generator-factory.js":7,"./src/hydra-source.js":11,"./src/lib/array-utils.js":12,"./src/lib/audio.js":13,"./src/lib/mouse.js":16,"./src/lib/video-recorder.js":19,"./src/output.js":21,"raf-loop":127,"regl":130}],3:[function(require,module,exports){
const Synth = require('./hydra-synth.js')
//const ShaderGenerator = require('./shader-generator.js')

module.exports = Synth

},{"./hydra-synth.js":2}],4:[function(require,module,exports){
// handles code evaluation and attaching relevant objects to global and evaluation contexts

const Sandbox = require('./lib/sandbox.js')
const ArrayUtils = require('./lib/array-utils.js')

class EvalSandbox {
  constructor(parent, makeGlobal, userProps = []) {
    this.makeGlobal = makeGlobal
    this.sandbox = Sandbox(parent)
    this.parent = parent
    var properties = Object.keys(parent)
    properties.forEach((property) => this.add(property))
    this.userProps = userProps
  }

  add(name) {
    if(this.makeGlobal) window[name] = this.parent[name]
    this.sandbox.addToContext(name, `parent.${name}`)
  }

// sets on window as well as synth object if global (not needed for objects, which can be set directly)

  set(property, value) {
    if(this.makeGlobal) {
      window[property] = value
    }
    this.parent[property] = value
  }

  tick() {
    if(this.makeGlobal) {
      this.userProps.forEach((property) => {
        this.parent[property] = window[property]
      })
      //  this.parent.speed = window.speed
    } else {

    }
  }

  eval(code) {
    this.sandbox.eval(code)
  }
}

module.exports = EvalSandbox

},{"./lib/array-utils.js":12,"./lib/sandbox.js":17}],5:[function(require,module,exports){
const arrayUtils = require('./lib/array-utils.js')

// [WIP] how to treat different dimensions (?)
const DEFAULT_CONVERSIONS = {
  float: {
    'vec4': { name: 'sum', args: [[1, 1, 1, 1]] },
    'vec2': { name: 'sum', args: [[1, 1]] }
  }
}

function fillArrayWithDefaults(arr, len) {
  // fill the array with default values if it's too short
  while (arr.length < len) {
    if (arr.length === 3) { // push a 1 as the default for .a in vec4
      arr.push(1.0)
    } else {
      arr.push(0.0)
    }
  }
  return arr.slice(0, len)
}

const ensure_decimal_dot = (val) => {
  val = val.toString()
  if (val.indexOf('.') < 0) {
    val += '.'
  }
  return val
}



module.exports = function formatArguments(transform, startIndex, synthContext) {
  const defaultArgs = transform.transform.inputs
  const userArgs = transform.userArgs
  const { generators } = transform.synth
  const { src } = generators // depends on synth having src() function
  return defaultArgs.map((input, index) => {
    const typedArg = {
      value: input.default,
      type: input.type, //
      isUniform: false,
      name: input.name,
      vecLen: 0
      //  generateGlsl: null // function for creating glsl
    }

    if (typedArg.type === 'float') typedArg.value = ensure_decimal_dot(input.default)
    if (input.type.startsWith('vec')) {
      try {
        typedArg.vecLen = Number.parseInt(input.type.substr(3))
      } catch (e) {
        console.log(`Error determining length of vector input type ${input.type} (${input.name})`)
      }
    }

    // if user has input something for this argument
    if (userArgs.length > index) {
      typedArg.value = userArgs[index]
      // do something if a composite or transform

      if (typeof userArgs[index] === 'function') {
        // if (typedArg.vecLen > 0) { // expected input is a vector, not a scalar
        //    typedArg.value = (context, props, batchId) => (fillArrayWithDefaults(userArgs[index](props), typedArg.vecLen))
        // } else {
        typedArg.value = (context, props, batchId) => {
          try {
            return userArgs[index](props)
          } catch (e) {
            console.log('ERROR', e)
            return input.default
          }
        }
        //  }

        typedArg.isUniform = true
      } else if (userArgs[index].constructor === Array) {
        //   if (typedArg.vecLen > 0) { // expected input is a vector, not a scalar
        //     typedArg.isUniform = true
        //     typedArg.value = fillArrayWithDefaults(typedArg.value, typedArg.vecLen)
        //  } else {
        //  console.log("is Array")
        typedArg.value = (context, props, batchId) => arrayUtils.getValue(userArgs[index])(props)
        typedArg.isUniform = true
        // }
      }
    }

    if (startIndex < 0) {
    } else {
      if (typedArg.value && typedArg.value.transforms) {
        const final_transform = typedArg.value.transforms[typedArg.value.transforms.length - 1]

        if (final_transform.transform.glsl_return_type !== input.type) {
          const defaults = DEFAULT_CONVERSIONS[input.type]
          if (typeof defaults !== 'undefined') {
            const default_def = defaults[final_transform.transform.glsl_return_type]
            if (typeof default_def !== 'undefined') {
              const { name, args } = default_def
              typedArg.value = typedArg.value[name](...args)
            }
          }
        }

        typedArg.isUniform = false
      } else if (typedArg.type === 'float' && typeof typedArg.value === 'number') {
        typedArg.value = ensure_decimal_dot(typedArg.value)
      } else if (typedArg.type.startsWith('vec') && typeof typedArg.value === 'object' && Array.isArray(typedArg.value)) {
        typedArg.isUniform = false
        typedArg.value = `${typedArg.type}(${typedArg.value.map(ensure_decimal_dot).join(', ')})`
      } else if (input.type === 'sampler2D') {
        // typedArg.tex = typedArg.value
        var x = typedArg.value
        typedArg.value = () => (x.getTexture())
        typedArg.isUniform = true
      } else {
        // if passing in a texture reference, when function asks for vec4, convert to vec4
        if (typedArg.value.getTexture && input.type === 'vec4') {
          var x1 = typedArg.value
          typedArg.value = src(x1)
          typedArg.isUniform = false
        }
      }

      // add tp uniform array if is a function that will pass in a different value on each render frame,
      // or a texture/ external source

      if (typedArg.isUniform) {
        typedArg.name += startIndex
        //  shaderParams.uniforms.push(typedArg)
      }
    }
    return typedArg
  })
}


},{"./lib/array-utils.js":12}],6:[function(require,module,exports){
const formatArguments = require('./format-arguments.js')

// Add extra functionality to Array.prototype for generating sequences in time
const arrayUtils = require('./lib/array-utils.js')



// converts a tree of javascript functions to a shader
module.exports =  function (transforms) {
    var shaderParams = {
      uniforms: [], // list of uniforms used in shader
      glslFunctions: [], // list of functions used in shader
      fragColor: ''
    }

    var gen = generateGlsl(transforms, shaderParams)('st')
    shaderParams.fragColor = gen
    // remove uniforms with duplicate names
    let uniforms = {}
    shaderParams.uniforms.forEach((uniform) => uniforms[uniform.name] = uniform)
    shaderParams.uniforms = Object.values(uniforms)
    return shaderParams

}


// recursive function for generating shader string from object containing functions and user arguments. Order of functions in string depends on type of function
// to do: improve variable names
function generateGlsl (transforms, shaderParams) {
  // transform function that outputs a shader string corresponding to gl_FragColor
  var fragColor = () => ''
  // var uniforms = []
  // var glslFunctions = []
  transforms.forEach((transform) => {
    var inputs = formatArguments(transform, shaderParams.uniforms.length)
    inputs.forEach((input) => {
      if(input.isUniform) shaderParams.uniforms.push(input)
    })

    // add new glsl function to running list of functions
    if(!contains(transform, shaderParams.glslFunctions)) shaderParams.glslFunctions.push(transform)

    // current function for generating frag color shader code
    var f0 = fragColor
    if (transform.transform.type === 'src') {
      fragColor = (uv) => `${shaderString(uv, transform.name, inputs, shaderParams)}`
    } else if (transform.transform.type === 'coord') {
      fragColor = (uv) => `${f0(`${shaderString(uv, transform.name, inputs, shaderParams)}`)}`
    } else if (transform.transform.type === 'color') {
      fragColor = (uv) =>  `${shaderString(`${f0(uv)}`, transform.name, inputs, shaderParams)}`
    } else if (transform.transform.type === 'combine') {
      // combining two generated shader strings (i.e. for blend, mult, add funtions)
      var f1 = inputs[0].value && inputs[0].value.transforms ?
      (uv) => `${generateGlsl(inputs[0].value.transforms, shaderParams)(uv)}` :
      (inputs[0].isUniform ? () => inputs[0].name : () => inputs[0].value)
      fragColor = (uv) => `${shaderString(`${f0(uv)}, ${f1(uv)}`, transform.name, inputs.slice(1), shaderParams)}`
    } else if (transform.transform.type === 'combineCoord') {
      // combining two generated shader strings (i.e. for modulate functions)
      var f1 = inputs[0].value && inputs[0].value.transforms ?
      (uv) => `${generateGlsl(inputs[0].value.transforms, shaderParams)(uv)}` :
      (inputs[0].isUniform ? () => inputs[0].name : () => inputs[0].value)
      fragColor = (uv) => `${f0(`${shaderString(`${uv}, ${f1(uv)}`, transform.name, inputs.slice(1), shaderParams)}`)}`


    }
  })
//  console.log(fragColor)
  //  break;
  return fragColor
}

// assembles a shader string containing the arguments and the function name, i.e. 'osc(uv, frequency)'
function shaderString (uv, method, inputs, shaderParams) {
  const str = inputs.map((input) => {
    if (input.isUniform) {
      return input.name
    } else if (input.value && input.value.transforms) {
      // this by definition needs to be a generator, hence we start with 'st' as the initial value for generating the glsl fragment
      return `${generateGlsl(input.value.transforms, shaderParams)('st')}`
    }
    return input.value
  }).reduce((p, c) => `${p}, ${c}`, '')

  return `${method}(${uv}${str})`
}

// merge two arrays and remove duplicates
function mergeArrays (a, b) {
  return a.concat(b.filter(function (item) {
    return a.indexOf(item) < 0;
  }))
}

// check whether array
function contains(object, arr) {
  for(var i = 0; i < arr.length; i++){
    if(object.name == arr[i].name) return true
  }
  return false
}




},{"./format-arguments.js":5,"./lib/array-utils.js":12}],7:[function(require,module,exports){
const GlslSource = require('./glsl-source.js')

class GeneratorFactory {
  constructor ({
      defaultUniforms,
      defaultOutput,
      extendTransforms = [],
      changeListener = (() => {})
    } = {}
    ) {
    this.defaultOutput = defaultOutput
    this.defaultUniforms = defaultUniforms
    this.changeListener = changeListener
    this.extendTransforms = extendTransforms
    this.generators = {}
    this.init()
  }
  init () {
    this.glslTransforms = {}
    this.generators = Object.entries(this.generators).reduce((prev, [method, transform]) => {
      this.changeListener({type: 'remove', synth: this, method})
      return prev
    }, {})

    this.sourceClass = (() => {
      return class extends GlslSource {
      }
    })()

    let functions = require('./glsl/glsl-functions.js')()

    // add user definied transforms
    if (Array.isArray(this.extendTransforms)) {
      functions.concat(this.extendTransforms)
    } else if (typeof this.extendTransforms === 'object' && this.extendTransforms.type) {
      functions.push(this.extendTransforms)
    }

    return functions.map((transform) => this.setFunction(transform))
 }

 _addMethod (method, transform) {
    const self = this
    this.glslTransforms[method] = transform
    if (transform.type === 'src') {
      const func = (...args) => new this.sourceClass({
        name: method,
        transform: transform,
        userArgs: args,
        defaultOutput: this.defaultOutput,
        defaultUniforms: this.defaultUniforms,
        synth: self
      })
      this.generators[method] = func
      this.changeListener({type: 'add', synth: this, method})
      return func
    } else  {
      this.sourceClass.prototype[method] = function (...args) {
        this.transforms.push({name: method, transform: transform, userArgs: args, synth: self})
        return this
      }
    }
    return undefined
  }

  setFunction(obj) {
    var processedGlsl = processGlsl(obj)
    if(processedGlsl) this._addMethod(obj.name, processedGlsl)
  }
}

const typeLookup = {
  'src': {
    returnType: 'vec4',
    args: ['vec2 _st']
  },
  'coord': {
    returnType: 'vec2',
    args: ['vec2 _st']
  },
  'color': {
    returnType: 'vec4',
    args: ['vec4 _c0']
  },
  'combine': {
    returnType: 'vec4',
    args: ['vec4 _c0', 'vec4 _c1']
  },
  'combineCoord': {
    returnType: 'vec2',
    args: ['vec2 _st', 'vec4 _c0']
  }
}
// expects glsl of format
// {
//   name: 'osc', // name that will be used to access function as well as within glsl
//   type: 'src', // can be src: vec4(vec2 _st), coord: vec2(vec2 _st), color: vec4(vec4 _c0), combine: vec4(vec4 _c0, vec4 _c1), combineCoord: vec2(vec2 _st, vec4 _c0)
//   inputs: [
//     {
//       name: 'freq',
//       type: 'float', // 'float'   //, 'texture', 'vec4'
//       default: 0.2
//     },
//     {
//           name: 'sync',
//           type: 'float',
//           default: 0.1
//         },
//         {
//           name: 'offset',
//           type: 'float',
//           default: 0.0
//         }
//   ],
   //  glsl: `
   //    vec2 st = _st;
   //    float r = sin((st.x-offset*2/freq+time*sync)*freq)*0.5  + 0.5;
   //    float g = sin((st.x+time*sync)*freq)*0.5 + 0.5;
   //    float b = sin((st.x+offset/freq+time*sync)*freq)*0.5  + 0.5;
   //    return vec4(r, g, b, 1.0);
   // `
// }

// // generates glsl function:
// `vec4 osc(vec2 _st, float freq, float sync, float offset){
//  vec2 st = _st;
//  float r = sin((st.x-offset*2/freq+time*sync)*freq)*0.5  + 0.5;
//  float g = sin((st.x+time*sync)*freq)*0.5 + 0.5;
//  float b = sin((st.x+offset/freq+time*sync)*freq)*0.5  + 0.5;
//  return vec4(r, g, b, 1.0);
// }`

function processGlsl(obj) {
  let t = typeLookup[obj.type]
  if(t) {
  let baseArgs = t.args.map((arg) => arg).join(", ")
  // @todo: make sure this works for all input types, add validation
  let customArgs = obj.inputs.map((input) => `${input.type} ${input.name}`).join(', ')
  let args = `${baseArgs}${customArgs.length > 0 ? ', '+ customArgs: ''}`
//  console.log('args are ', args)

    let glslFunction =
`
  ${t.returnType} ${obj.name}(${args}) {
      ${obj.glsl}
  }
`

  // add extra input to beginning for backward combatibility @todo update compiler so this is no longer necessary
    if(obj.type === 'combine' || obj.type === 'combineCoord') obj.inputs.unshift({
        name: 'color',
        type: 'vec4'
      })
    return Object.assign({}, obj, { glsl: glslFunction})
  } else {
    console.warn(`type ${obj.type} not recognized`, obj)
  }

}

module.exports = GeneratorFactory

},{"./glsl-source.js":8,"./glsl/glsl-functions.js":9}],8:[function(require,module,exports){
const generateGlsl = require('./generate-glsl.js')
// const formatArguments = require('./glsl-utils.js').formatArguments

// const glslTransforms = require('./glsl/composable-glsl-functions.js')
const utilityGlsl = require('./glsl/utility-functions.js')

var GlslSource = function (obj) {
  this.transforms = []
  this.transforms.push(obj)
  this.defaultOutput = obj.defaultOutput
  this.synth = obj.synth
  this.type = 'GlslSource'
  this.defaultUniforms = obj.defaultUniforms
  return this
}

GlslSource.prototype.addTransform = function (obj)  {
    this.transforms.push(obj)
}

GlslSource.prototype.out = function (_output) {
  var output = _output || this.defaultOutput
  var glsl = this.glsl(output)
  this.synth.currentFunctions = []
 // output.renderPasses(glsl)
  if(output) try{
    output.render(glsl)
  } catch (error) {
    console.log('shader could not compile', error)
  }
}

GlslSource.prototype.glsl = function () {
  //var output = _output || this.defaultOutput
  var self = this
  // uniforms included in all shaders
//  this.defaultUniforms = output.uniforms
  var passes = []
  var transforms = []
//  console.log('output', output)
  this.transforms.forEach((transform) => {
    if(transform.transform.type === 'renderpass'){
      // if (transforms.length > 0) passes.push(this.compile(transforms, output))
      // transforms = []
      // var uniforms = {}
      // const inputs = formatArguments(transform, -1)
      // inputs.forEach((uniform) => { uniforms[uniform.name] = uniform.value })
      //
      // passes.push({
      //   frag: transform.transform.frag,
      //   uniforms: Object.assign({}, self.defaultUniforms, uniforms)
      // })
      // transforms.push({name: 'prev', transform:  glslTransforms['prev'], synth: this.synth})
      console.warn('no support for renderpass')
    } else {
      transforms.push(transform)
    }
  })

  if (transforms.length > 0) passes.push(this.compile(transforms))

  return passes
}

GlslSource.prototype.compile = function (transforms) {
  var shaderInfo = generateGlsl(transforms, this.synth)
  var uniforms = {}
  shaderInfo.uniforms.forEach((uniform) => { uniforms[uniform.name] = uniform.value })

  var frag = `
  precision ${this.defaultOutput.precision} float;
  ${Object.values(shaderInfo.uniforms).map((uniform) => {
    let type = uniform.type
    switch (uniform.type) {
      case 'texture':
        type = 'sampler2D'
        break
    }
    return `
      uniform ${type} ${uniform.name};`
  }).join('')}
  uniform float time;
  uniform vec2 resolution;
  varying vec2 uv;
  uniform sampler2D prevBuffer;

  ${Object.values(utilityGlsl).map((transform) => {
  //  console.log(transform.glsl)
    return `
            ${transform.glsl}
          `
  }).join('')}

  ${shaderInfo.glslFunctions.map((transform) => {
    return `
            ${transform.transform.glsl}
          `
  }).join('')}

  void main () {
    vec4 c = vec4(1, 0, 0, 1);
    vec2 st = gl_FragCoord.xy/resolution.xy;
    gl_FragColor = ${shaderInfo.fragColor};
  }
  `

  return {
    frag: frag,
    uniforms: Object.assign({}, this.defaultUniforms, uniforms)
  }

}

module.exports = GlslSource

},{"./generate-glsl.js":6,"./glsl/utility-functions.js":10}],9:[function(require,module,exports){
/*
Format for adding functions to hydra. For each entry in this file, hydra automatically generates a glsl function and javascript function with the same name. You can also ass functions dynamically using setFunction(object).

{
  name: 'osc', // name that will be used to access function in js as well as in glsl
  type: 'src', // can be 'src', 'color', 'combine', 'combineCoords'. see below for more info
  inputs: [
    {
      name: 'freq',
      type: 'float',
      default: 0.2
    },
    {
      name: 'sync',
      type: 'float',
      default: 0.1
    },
    {
      name: 'offset',
      type: 'float',
      default: 0.0
    }
  ],
    glsl: `
      vec2 st = _st;
      float r = sin((st.x-offset*2/freq+time*sync)*freq)*0.5  + 0.5;
      float g = sin((st.x+time*sync)*freq)*0.5 + 0.5;
      float b = sin((st.x+offset/freq+time*sync)*freq)*0.5  + 0.5;
      return vec4(r, g, b, 1.0);
   `
}

// The above code generates the glsl function:
`vec4 osc(vec2 _st, float freq, float sync, float offset){
 vec2 st = _st;
 float r = sin((st.x-offset*2/freq+time*sync)*freq)*0.5  + 0.5;
 float g = sin((st.x+time*sync)*freq)*0.5 + 0.5;
 float b = sin((st.x+offset/freq+time*sync)*freq)*0.5  + 0.5;
 return vec4(r, g, b, 1.0);
}`


Types and default arguments for hydra functions.
The value in the 'type' field lets the parser know which type the function will be returned as well as default arguments.

const types = {
  'src': {
    returnType: 'vec4',
    args: ['vec2 _st']
  },
  'coord': {
    returnType: 'vec2',
    args: ['vec2 _st']
  },
  'color': {
    returnType: 'vec4',
    args: ['vec4 _c0']
  },
  'combine': {
    returnType: 'vec4',
    args: ['vec4 _c0', 'vec4 _c1']
  },
  'combineCoord': {
    returnType: 'vec2',
    args: ['vec2 _st', 'vec4 _c0']
  }
}

*/

module.exports = () => [
  {
  name: 'noise',
  type: 'src',
  inputs: [
    {
      type: 'float',
      name: 'scale',
      default: 10,
    },
{
      type: 'float',
      name: 'offset',
      default: 0.1,
    }
  ],
  glsl:
`   return vec4(vec3(_noise(vec3(_st*scale, offset*time))), 1.0);`
},
{
  name: 'voronoi',
  type: 'src',
  inputs: [
    {
      type: 'float',
      name: 'scale',
      default: 5,
    },
{
      type: 'float',
      name: 'speed',
      default: 0.3,
    },
{
      type: 'float',
      name: 'blending',
      default: 0.3,
    }
  ],
  glsl:
`   vec3 color = vec3(.0);
   // Scale
   _st *= scale;
   // Tile the space
   vec2 i_st = floor(_st);
   vec2 f_st = fract(_st);
   float m_dist = 10.;  // minimun distance
   vec2 m_point;        // minimum point
   for (int j=-1; j<=1; j++ ) {
   for (int i=-1; i<=1; i++ ) {
   vec2 neighbor = vec2(float(i),float(j));
   vec2 p = i_st + neighbor;
   vec2 point = fract(sin(vec2(dot(p,vec2(127.1,311.7)),dot(p,vec2(269.5,183.3))))*43758.5453);
   point = 0.5 + 0.5*sin(time*speed + 6.2831*point);
   vec2 diff = neighbor + point - f_st;
   float dist = length(diff);
   if( dist < m_dist ) {
   m_dist = dist;
   m_point = point;
   }
   }
   }
   // Assign a color using the closest point position
   color += dot(m_point,vec2(.3,.6));
   color *= 1.0 - blending*m_dist;
   return vec4(color, 1.0);`
},
{
  name: 'osc',
  type: 'src',
  inputs: [
    {
      type: 'float',
      name: 'frequency',
      default: 60,
    },
{
      type: 'float',
      name: 'sync',
      default: 0.1,
    },
{
      type: 'float',
      name: 'offset',
      default: 0,
    }
  ],
  glsl:
`   vec2 st = _st;
   float r = sin((st.x-offset/frequency+time*sync)*frequency)*0.5  + 0.5;
   float g = sin((st.x+time*sync)*frequency)*0.5 + 0.5;
   float b = sin((st.x+offset/frequency+time*sync)*frequency)*0.5  + 0.5;
   return vec4(r, g, b, 1.0);`
},
{
  name: 'shape',
  type: 'src',
  inputs: [
    {
      type: 'float',
      name: 'sides',
      default: 3,
    },
{
      type: 'float',
      name: 'radius',
      default: 0.3,
    },
{
      type: 'float',
      name: 'smoothing',
      default: 0.01,
    }
  ],
  glsl:
`   vec2 st = _st * 2. - 1.;
   // Angle and radius from the current pixel
   float a = atan(st.x,st.y)+3.1416;
   float r = (2.*3.1416)/sides;
   float d = cos(floor(.5+a/r)*r-a)*length(st);
   return vec4(vec3(1.0-smoothstep(radius,radius + smoothing + 0.0000001,d)), 1.0);`
},
{
  name: 'gradient',
  type: 'src',
  inputs: [
    {
      type: 'float',
      name: 'speed',
      default: 0,
    }
  ],
  glsl:
`   return vec4(_st, sin(time*speed), 1.0);`
},
{
  name: 'src',
  type: 'src',
  inputs: [
    {
      type: 'sampler2D',
      name: 'tex',
      default: NaN,
    }
  ],
  glsl:
`   //  vec2 uv = gl_FragCoord.xy/vec2(1280., 720.);
   return texture2D(tex, fract(_st));`
},
{
  name: 'solid',
  type: 'src',
  inputs: [
    {
      type: 'float',
      name: 'r',
      default: 0,
    },
{
      type: 'float',
      name: 'g',
      default: 0,
    },
{
      type: 'float',
      name: 'b',
      default: 0,
    },
{
      type: 'float',
      name: 'a',
      default: 1,
    }
  ],
  glsl:
`   return vec4(r, g, b, a);`
},
{
  name: 'rotate',
  type: 'coord',
  inputs: [
    {
      type: 'float',
      name: 'angle',
      default: 10,
    },
{
      type: 'float',
      name: 'speed',
      default: 0,
    }
  ],
  glsl:
`   vec2 xy = _st - vec2(0.5);
   float ang = angle + speed *time;
   xy = mat2(cos(ang),-sin(ang), sin(ang),cos(ang))*xy;
   xy += 0.5;
   return xy;`
},
{
  name: 'scale',
  type: 'coord',
  inputs: [
    {
      type: 'float',
      name: 'amount',
      default: 1.5,
    },
{
      type: 'float',
      name: 'xMult',
      default: 1,
    },
{
      type: 'float',
      name: 'yMult',
      default: 1,
    },
{
      type: 'float',
      name: 'offsetX',
      default: 0.5,
    },
{
      type: 'float',
      name: 'offsetY',
      default: 0.5,
    }
  ],
  glsl:
`   vec2 xy = _st - vec2(offsetX, offsetY);
   xy*=(1.0/vec2(amount*xMult, amount*yMult));
   xy+=vec2(offsetX, offsetY);
   return xy;
   `
},
{
  name: 'pixelate',
  type: 'coord',
  inputs: [
    {
      type: 'float',
      name: 'pixelX',
      default: 20,
    },
{
      type: 'float',
      name: 'pixelY',
      default: 20,
    }
  ],
  glsl:
`   vec2 xy = vec2(pixelX, pixelY);
   return (floor(_st * xy) + 0.5)/xy;`
},
{
  name: 'posterize',
  type: 'color',
  inputs: [
    {
      type: 'float',
      name: 'bins',
      default: 3,
    },
{
      type: 'float',
      name: 'gamma',
      default: 0.6,
    }
  ],
  glsl:
`   vec4 c2 = pow(_c0, vec4(gamma));
   c2 *= vec4(bins);
   c2 = floor(c2);
   c2/= vec4(bins);
   c2 = pow(c2, vec4(1.0/gamma));
   return vec4(c2.xyz, _c0.a);`
},
{
  name: 'shift',
  type: 'color',
  inputs: [
    {
      type: 'float',
      name: 'r',
      default: 0.5,
    },
{
      type: 'float',
      name: 'g',
      default: 0,
    },
{
      type: 'float',
      name: 'b',
      default: 0,
    },
{
      type: 'float',
      name: 'a',
      default: 0,
    }
  ],
  glsl:
`   vec4 c2 = vec4(_c0);
   c2.r = fract(c2.r + r);
   c2.g = fract(c2.g + g);
   c2.b = fract(c2.b + b);
   c2.a = fract(c2.a + a);
   return vec4(c2.rgba);`
},
{
  name: 'repeat',
  type: 'coord',
  inputs: [
    {
      type: 'float',
      name: 'repeatX',
      default: 3,
    },
{
      type: 'float',
      name: 'repeatY',
      default: 3,
    },
{
      type: 'float',
      name: 'offsetX',
      default: 0,
    },
{
      type: 'float',
      name: 'offsetY',
      default: 0,
    }
  ],
  glsl:
`   vec2 st = _st * vec2(repeatX, repeatY);
   st.x += step(1., mod(st.y,2.0)) * offsetX;
   st.y += step(1., mod(st.x,2.0)) * offsetY;
   return fract(st);`
},
{
  name: 'modulateRepeat',
  type: 'combineCoord',
  inputs: [
    {
      type: 'float',
      name: 'repeatX',
      default: 3,
    },
{
      type: 'float',
      name: 'repeatY',
      default: 3,
    },
{
      type: 'float',
      name: 'offsetX',
      default: 0.5,
    },
{
      type: 'float',
      name: 'offsetY',
      default: 0.5,
    }
  ],
  glsl:
`   vec2 st = _st * vec2(repeatX, repeatY);
   st.x += step(1., mod(st.y,2.0)) + _c0.r * offsetX;
   st.y += step(1., mod(st.x,2.0)) + _c0.g * offsetY;
   return fract(st);`
},
{
  name: 'repeatX',
  type: 'coord',
  inputs: [
    {
      type: 'float',
      name: 'reps',
      default: 3,
    },
{
      type: 'float',
      name: 'offset',
      default: 0,
    }
  ],
  glsl:
`   vec2 st = _st * vec2(reps, 1.0);
   //  float f =  mod(_st.y,2.0);
   st.y += step(1., mod(st.x,2.0))* offset;
   return fract(st);`
},
{
  name: 'modulateRepeatX',
  type: 'combineCoord',
  inputs: [
    {
      type: 'float',
      name: 'reps',
      default: 3,
    },
{
      type: 'float',
      name: 'offset',
      default: 0.5,
    }
  ],
  glsl:
`   vec2 st = _st * vec2(reps, 1.0);
   //  float f =  mod(_st.y,2.0);
   st.y += step(1., mod(st.x,2.0)) + _c0.r * offset;
   return fract(st);`
},
{
  name: 'repeatY',
  type: 'coord',
  inputs: [
    {
      type: 'float',
      name: 'reps',
      default: 3,
    },
{
      type: 'float',
      name: 'offset',
      default: 0,
    }
  ],
  glsl:
`   vec2 st = _st * vec2(1.0, reps);
   //  float f =  mod(_st.y,2.0);
   st.x += step(1., mod(st.y,2.0))* offset;
   return fract(st);`
},
{
  name: 'modulateRepeatY',
  type: 'combineCoord',
  inputs: [
    {
      type: 'float',
      name: 'reps',
      default: 3,
    },
{
      type: 'float',
      name: 'offset',
      default: 0.5,
    }
  ],
  glsl:
`   vec2 st = _st * vec2(reps, 1.0);
   //  float f =  mod(_st.y,2.0);
   st.x += step(1., mod(st.y,2.0)) + _c0.r * offset;
   return fract(st);`
},
{
  name: 'kaleid',
  type: 'coord',
  inputs: [
    {
      type: 'float',
      name: 'nSides',
      default: 4,
    }
  ],
  glsl:
`   vec2 st = _st;
   st -= 0.5;
   float r = length(st);
   float a = atan(st.y, st.x);
   float pi = 2.*3.1416;
   a = mod(a,pi/nSides);
   a = abs(a-pi/nSides/2.);
   return r*vec2(cos(a), sin(a));`
},
{
  name: 'modulateKaleid',
  type: 'combineCoord',
  inputs: [
    {
      type: 'float',
      name: 'nSides',
      default: 4,
    }
  ],
  glsl:
`   vec2 st = _st - 0.5;
   float r = length(st);
   float a = atan(st.y, st.x);
   float pi = 2.*3.1416;
   a = mod(a,pi/nSides);
   a = abs(a-pi/nSides/2.);
   return (_c0.r+r)*vec2(cos(a), sin(a));`
},
{
  name: 'scroll',
  type: 'coord',
  inputs: [
    {
      type: 'float',
      name: 'scrollX',
      default: 0.5,
    },
{
      type: 'float',
      name: 'scrollY',
      default: 0.5,
    },
{
      type: 'float',
      name: 'speedX',
      default: 0,
    },
{
      type: 'float',
      name: 'speedY',
      default: 0,
    }
  ],
  glsl:
`
   _st.x += scrollX + time*speedX;
   _st.y += scrollY + time*speedY;
   return fract(_st);`
},
{
  name: 'scrollX',
  type: 'coord',
  inputs: [
    {
      type: 'float',
      name: 'scrollX',
      default: 0.5,
    },
{
      type: 'float',
      name: 'speed',
      default: 0,
    }
  ],
  glsl:
`   _st.x += scrollX + time*speed;
   return fract(_st);`
},
{
  name: 'modulateScrollX',
  type: 'combineCoord',
  inputs: [
    {
      type: 'float',
      name: 'scrollX',
      default: 0.5,
    },
{
      type: 'float',
      name: 'speed',
      default: 0,
    }
  ],
  glsl:
`   _st.x += _c0.r*scrollX + time*speed;
   return fract(_st);`
},
{
  name: 'scrollY',
  type: 'coord',
  inputs: [
    {
      type: 'float',
      name: 'scrollY',
      default: 0.5,
    },
{
      type: 'float',
      name: 'speed',
      default: 0,
    }
  ],
  glsl:
`   _st.y += scrollY + time*speed;
   return fract(_st);`
},
{
  name: 'modulateScrollY',
  type: 'combineCoord',
  inputs: [
    {
      type: 'float',
      name: 'scrollY',
      default: 0.5,
    },
{
      type: 'float',
      name: 'speed',
      default: 0,
    }
  ],
  glsl:
`   _st.y += _c0.r*scrollY + time*speed;
   return fract(_st);`
},
{
  name: 'add',
  type: 'combine',
  inputs: [
    {
      type: 'float',
      name: 'amount',
      default: 1,
    }
  ],
  glsl:
`   return (_c0+_c1)*amount + _c0*(1.0-amount);`
},
{
  name: 'sub',
  type: 'combine',
  inputs: [
    {
      type: 'float',
      name: 'amount',
      default: 1,
    }
  ],
  glsl:
`   return (_c0-_c1)*amount + _c0*(1.0-amount);`
},
{
  name: 'layer',
  type: 'combine',
  inputs: [

  ],
  glsl:
`   return vec4(mix(_c0.rgb, _c1.rgb, _c1.a), clamp(_c0.a + _c1.a, 0.0, 1.0));`
},
{
  name: 'blend',
  type: 'combine',
  inputs: [
    {
      type: 'float',
      name: 'amount',
      default: 0.5,
    }
  ],
  glsl:
`   return _c0*(1.0-amount)+_c1*amount;`
},
{
  name: 'mult',
  type: 'combine',
  inputs: [
    {
      type: 'float',
      name: 'amount',
      default: 1,
    }
  ],
  glsl:
`   return _c0*(1.0-amount)+(_c0*_c1)*amount;`
},
{
  name: 'diff',
  type: 'combine',
  inputs: [

  ],
  glsl:
`   return vec4(abs(_c0.rgb-_c1.rgb), max(_c0.a, _c1.a));`
},
{
  name: 'modulate',
  type: 'combineCoord',
  inputs: [
    {
      type: 'float',
      name: 'amount',
      default: 0.1,
    }
  ],
  glsl:
`   //  return fract(st+(_c0.xy-0.5)*amount);
   return _st + _c0.xy*amount;`
},
{
  name: 'modulateScale',
  type: 'combineCoord',
  inputs: [
    {
      type: 'float',
      name: 'multiple',
      default: 1,
    },
{
      type: 'float',
      name: 'offset',
      default: 1,
    }
  ],
  glsl:
`   vec2 xy = _st - vec2(0.5);
   xy*=(1.0/vec2(offset + multiple*_c0.r, offset + multiple*_c0.g));
   xy+=vec2(0.5);
   return xy;`
},
{
  name: 'modulatePixelate',
  type: 'combineCoord',
  inputs: [
    {
      type: 'float',
      name: 'multiple',
      default: 10,
    },
{
      type: 'float',
      name: 'offset',
      default: 3,
    }
  ],
  glsl:
`   vec2 xy = vec2(offset + _c0.x*multiple, offset + _c0.y*multiple);
   return (floor(_st * xy) + 0.5)/xy;`
},
{
  name: 'modulateRotate',
  type: 'combineCoord',
  inputs: [
    {
      type: 'float',
      name: 'multiple',
      default: 1,
    },
{
      type: 'float',
      name: 'offset',
      default: 0,
    }
  ],
  glsl:
`   vec2 xy = _st - vec2(0.5);
   float angle = offset + _c0.x * multiple;
   xy = mat2(cos(angle),-sin(angle), sin(angle),cos(angle))*xy;
   xy += 0.5;
   return xy;`
},
{
  name: 'modulateHue',
  type: 'combineCoord',
  inputs: [
    {
      type: 'float',
      name: 'amount',
      default: 1,
    }
  ],
  glsl:
`   return _st + (vec2(_c0.g - _c0.r, _c0.b - _c0.g) * amount * 1.0/resolution);`
},
{
  name: 'invert',
  type: 'color',
  inputs: [
    {
      type: 'float',
      name: 'amount',
      default: 1,
    }
  ],
  glsl:
`   return vec4((1.0-_c0.rgb)*amount + _c0.rgb*(1.0-amount), _c0.a);`
},
{
  name: 'contrast',
  type: 'color',
  inputs: [
    {
      type: 'float',
      name: 'amount',
      default: 1.6,
    }
  ],
  glsl:
`   vec4 c = (_c0-vec4(0.5))*vec4(amount) + vec4(0.5);
   return vec4(c.rgb, _c0.a);`
},
{
  name: 'brightness',
  type: 'color',
  inputs: [
    {
      type: 'float',
      name: 'amount',
      default: 0.4,
    }
  ],
  glsl:
`   return vec4(_c0.rgb + vec3(amount), _c0.a);`
},
{
  name: 'mask',
  type: 'combine',
  inputs: [

  ],
  glsl:
  `   float a = _luminance(_c1.rgb);
  return vec4(_c0.rgb*a, a*_c0.a);`
},

{
  name: 'luma',
  type: 'color',
  inputs: [
    {
      type: 'float',
      name: 'threshold',
      default: 0.5,
    },
{
      type: 'float',
      name: 'tolerance',
      default: 0.1,
    }
  ],
  glsl:
`   float a = smoothstep(threshold-(tolerance+0.0000001), threshold+(tolerance+0.0000001), _luminance(_c0.rgb));
   return vec4(_c0.rgb*a, a);`
},
{
  name: 'thresh',
  type: 'color',
  inputs: [
    {
      type: 'float',
      name: 'threshold',
      default: 0.5,
    },
{
      type: 'float',
      name: 'tolerance',
      default: 0.04,
    }
  ],
  glsl:
`   return vec4(vec3(smoothstep(threshold-(tolerance+0.0000001), threshold+(tolerance+0.0000001), _luminance(_c0.rgb))), _c0.a);`
},
{
  name: 'color',
  type: 'color',
  inputs: [
    {
      type: 'float',
      name: 'r',
      default: 1,
    },
{
      type: 'float',
      name: 'g',
      default: 1,
    },
{
      type: 'float',
      name: 'b',
      default: 1,
    },
{
      type: 'float',
      name: 'a',
      default: 1,
    }
  ],
  glsl:
`   vec4 c = vec4(r, g, b, a);
   vec4 pos = step(0.0, c); // detect whether negative
   // if > 0, return r * _c0
   // if < 0 return (1.0-r) * _c0
   return vec4(mix((1.0-_c0)*abs(c), c*_c0, pos));`
},
{
  name: 'saturate',
  type: 'color',
  inputs: [
    {
      type: 'float',
      name: 'amount',
      default: 2,
    }
  ],
  glsl:
`   const vec3 W = vec3(0.2125, 0.7154, 0.0721);
   vec3 intensity = vec3(dot(_c0.rgb, W));
   return vec4(mix(intensity, _c0.rgb, amount), _c0.a);`
},
{
  name: 'hue',
  type: 'color',
  inputs: [
    {
      type: 'float',
      name: 'hue',
      default: 0.4,
    }
  ],
  glsl:
`   vec3 c = _rgbToHsv(_c0.rgb);
   c.r += hue;
   //  c.r = fract(c.r);
   return vec4(_hsvToRgb(c), _c0.a);`
},
{
  name: 'colorama',
  type: 'color',
  inputs: [
    {
      type: 'float',
      name: 'amount',
      default: 0.005,
    }
  ],
  glsl:
`   vec3 c = _rgbToHsv(_c0.rgb);
   c += vec3(amount);
   c = _hsvToRgb(c);
   c = fract(c);
   return vec4(c, _c0.a);`
},
{
  name: 'prev',
  type: 'src',
  inputs: [

  ],
  glsl:
`   return texture2D(prevBuffer, fract(_st));`
},
{
  name: 'sum',
  type: 'color',
  inputs: [
    {
      type: 'vec4',
      name: 'scale',
      default: 1,
    }
  ],
  glsl:
`   vec4 v = _c0 * s;
   return v.r + v.g + v.b + v.a;
   }
   float sum(vec2 _st, vec4 s) { // vec4 is not a typo, because argument type is not overloaded
   vec2 v = _st.xy * s.xy;
   return v.x + v.y;`
},
{
  name: 'r',
  type: 'color',
  inputs: [
    {
      type: 'float',
      name: 'scale',
      default: 1,
    },
{
      type: 'float',
      name: 'offset',
      default: 0,
    }
  ],
  glsl:
`   return vec4(_c0.r * scale + offset);`
},
{
  name: 'g',
  type: 'color',
  inputs: [
    {
      type: 'float',
      name: 'scale',
      default: 1,
    },
{
      type: 'float',
      name: 'offset',
      default: 0,
    }
  ],
  glsl:
`   return vec4(_c0.g * scale + offset);`
},
{
  name: 'b',
  type: 'color',
  inputs: [
    {
      type: 'float',
      name: 'scale',
      default: 1,
    },
{
      type: 'float',
      name: 'offset',
      default: 0,
    }
  ],
  glsl:
`   return vec4(_c0.b * scale + offset);`
},
{
  name: 'a',
  type: 'color',
  inputs: [
    {
      type: 'float',
      name: 'scale',
      default: 1,
    },
{
      type: 'float',
      name: 'offset',
      default: 0,
    }
  ],
  glsl:
`   return vec4(_c0.a * scale + offset);`
}
]

},{}],10:[function(require,module,exports){
// functions that are only used within other functions

module.exports = {
  _luminance: {
    type: 'util',
    glsl: `float _luminance(vec3 rgb){
      const vec3 W = vec3(0.2125, 0.7154, 0.0721);
      return dot(rgb, W);
    }`
  },
  _noise: {
    type: 'util',
    glsl: `
    //	Simplex 3D Noise
    //	by Ian McEwan, Ashima Arts
    vec4 permute(vec4 x){return mod(((x*34.0)+1.0)*x, 289.0);}
  vec4 taylorInvSqrt(vec4 r){return 1.79284291400159 - 0.85373472095314 * r;}

  float _noise(vec3 v){
    const vec2  C = vec2(1.0/6.0, 1.0/3.0) ;
    const vec4  D = vec4(0.0, 0.5, 1.0, 2.0);

  // First corner
    vec3 i  = floor(v + dot(v, C.yyy) );
    vec3 x0 =   v - i + dot(i, C.xxx) ;

  // Other corners
    vec3 g = step(x0.yzx, x0.xyz);
    vec3 l = 1.0 - g;
    vec3 i1 = min( g.xyz, l.zxy );
    vec3 i2 = max( g.xyz, l.zxy );

    //  x0 = x0 - 0. + 0.0 * C
    vec3 x1 = x0 - i1 + 1.0 * C.xxx;
    vec3 x2 = x0 - i2 + 2.0 * C.xxx;
    vec3 x3 = x0 - 1. + 3.0 * C.xxx;

  // Permutations
    i = mod(i, 289.0 );
    vec4 p = permute( permute( permute(
               i.z + vec4(0.0, i1.z, i2.z, 1.0 ))
             + i.y + vec4(0.0, i1.y, i2.y, 1.0 ))
             + i.x + vec4(0.0, i1.x, i2.x, 1.0 ));

  // Gradients
  // ( N*N points uniformly over a square, mapped onto an octahedron.)
    float n_ = 1.0/7.0; // N=7
    vec3  ns = n_ * D.wyz - D.xzx;

    vec4 j = p - 49.0 * floor(p * ns.z *ns.z);  //  mod(p,N*N)

    vec4 x_ = floor(j * ns.z);
    vec4 y_ = floor(j - 7.0 * x_ );    // mod(j,N)

    vec4 x = x_ *ns.x + ns.yyyy;
    vec4 y = y_ *ns.x + ns.yyyy;
    vec4 h = 1.0 - abs(x) - abs(y);

    vec4 b0 = vec4( x.xy, y.xy );
    vec4 b1 = vec4( x.zw, y.zw );

    vec4 s0 = floor(b0)*2.0 + 1.0;
    vec4 s1 = floor(b1)*2.0 + 1.0;
    vec4 sh = -step(h, vec4(0.0));

    vec4 a0 = b0.xzyw + s0.xzyw*sh.xxyy ;
    vec4 a1 = b1.xzyw + s1.xzyw*sh.zzww ;

    vec3 p0 = vec3(a0.xy,h.x);
    vec3 p1 = vec3(a0.zw,h.y);
    vec3 p2 = vec3(a1.xy,h.z);
    vec3 p3 = vec3(a1.zw,h.w);

  //Normalise gradients
    vec4 norm = taylorInvSqrt(vec4(dot(p0,p0), dot(p1,p1), dot(p2, p2), dot(p3,p3)));
    p0 *= norm.x;
    p1 *= norm.y;
    p2 *= norm.z;
    p3 *= norm.w;

  // Mix final noise value
    vec4 m = max(0.6 - vec4(dot(x0,x0), dot(x1,x1), dot(x2,x2), dot(x3,x3)), 0.0);
    m = m * m;
    return 42.0 * dot( m*m, vec4( dot(p0,x0), dot(p1,x1),
                                  dot(p2,x2), dot(p3,x3) ) );
  }
    `
  },


  _rgbToHsv: {
    type: 'util',
    glsl: `vec3 _rgbToHsv(vec3 c){
            vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
            vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));
            vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));

            float d = q.x - min(q.w, q.y);
            float e = 1.0e-10;
            return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
        }`
  },
  _hsvToRgb: {
    type: 'util',
    glsl: `vec3 _hsvToRgb(vec3 c){
        vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
        vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);
        return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
    }`
  }
}

},{}],11:[function(require,module,exports){
const Webcam = require('./lib/webcam.js')
const Screen = require('./lib/screenmedia.js')

class HydraSource {
  constructor ({ regl, width, height, pb, label = ""}) {
    this.label = label
    this.regl = regl
    this.src = null
    this.dynamic = true
    this.width = width
    this.height = height
    this.tex = this.regl.texture({
      //  shape: [width, height]
      shape: [ 1, 1 ]
    })
    this.pb = pb
  }

  init (opts, params) {
    if ('src' in opts) {
      this.src = opts.src
      this.tex = this.regl.texture({ data: this.src, ...params })
    }
    if ('dynamic' in opts) this.dynamic = opts.dynamic
  }

  initCam (index, params) {
    const self = this
    Webcam(index)
      .then(response => {
        self.src = response.video
        self.dynamic = true
        self.tex = self.regl.texture({ data: self.src, ...params })
      })
      .catch(err => console.log('could not get camera', err))
  }

  initVideo (url = '', params) {
    // const self = this
    const vid = document.createElement('video')
    vid.crossOrigin = 'anonymous'
    vid.autoplay = true
    vid.loop = true
    vid.muted = true // mute in order to load without user interaction
    const onload = vid.addEventListener('loadeddata', () => {
      this.src = vid
      vid.play()
      this.tex = this.regl.texture({ data: this.src, ...params})
      this.dynamic = true
    })
    vid.src = url
  }

  initImage (url = '', params) {
    const img = document.createElement('img')
    img.crossOrigin = 'anonymous'
    img.src = url
    img.onload = () => {
      this.src = img
      this.dynamic = false
      this.tex = this.regl.texture({ data: this.src, ...params})
    }
  }

  initStream (streamName, params) {
    //  console.log("initing stream!", streamName)
    let self = this
    if (streamName && this.pb) {
      this.pb.initSource(streamName)

      this.pb.on('got video', function (nick, video) {
        if (nick === streamName) {
          self.src = video
          self.dynamic = true
          self.tex = self.regl.texture({ data: self.src, ...params})
        }
      })
    }
  }

  // index only relevant in atom-hydra + desktop apps
  initScreen (index = 0, params) {
    const self = this
    Screen()
      .then(function (response) {
        self.src = response.video
        self.tex = self.regl.texture({ data: self.src, ...params})
        self.dynamic = true
        //  console.log("received screen input")
      })
      .catch(err => console.log('could not get screen', err))
  }

  resize (width, height) {
    this.width = width
    this.height = height
  }

  clear () {
    if (this.src && this.src.srcObject) {
      if (this.src.srcObject.getTracks) {
        this.src.srcObject.getTracks().forEach(track => track.stop())
      }
    }
    this.src = null
    this.tex = this.regl.texture({ shape: [ 1, 1 ] })
  }

  tick (time) {
    //  console.log(this.src, this.tex.width, this.tex.height)
    if (this.src !== null && this.dynamic === true) {
      if (this.src.videoWidth && this.src.videoWidth !== this.tex.width) {
        console.log(
          this.src.videoWidth,
          this.src.videoHeight,
          this.tex.width,
          this.tex.height
        )
        this.tex.resize(this.src.videoWidth, this.src.videoHeight)
      }

      if (this.src.width && this.src.width !== this.tex.width) {
        this.tex.resize(this.src.width, this.src.height)
      }

      this.tex.subimage(this.src)
    }
  }

  getTexture () {
    return this.tex
  }
}

module.exports = HydraSource

},{"./lib/screenmedia.js":18,"./lib/webcam.js":20}],12:[function(require,module,exports){
// WIP utils for working with arrays
// Possibly should be integrated with lfo extension, etc.
// to do: transform time rather than array values, similar to working with coordinates in hydra

var easing = require('./easing-functions.js')

var map = (num, in_min, in_max, out_min, out_max) => {
  return (num - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}

module.exports = {
  init: () => {

    Array.prototype.fast = function(speed = 1) {
      this._speed = speed
      return this
    }

    Array.prototype.smooth = function(smooth = 1) {
      this._smooth = smooth
      return this
    }

    Array.prototype.ease = function(ease = 'linear') {
      if (typeof ease == 'function') {
        this._smooth = 1
        this._ease = ease
      }
      else if (easing[ease]){
        this._smooth = 1
        this._ease = easing[ease]
      }
      return this
    }

    Array.prototype.offset = function(offset = 0.5) {
      this._offset = offset%1.0
      return this
    }

    // Array.prototype.bounce = function() {
    //   this.modifiers.bounce = true
    //   return this
    // }

    Array.prototype.fit = function(low = 0, high =1) {
      let lowest = Math.min(...this)
      let highest =  Math.max(...this)
      var newArr = this.map((num) => map(num, lowest, highest, low, high))
      newArr._speed = this._speed
      newArr._smooth = this._smooth
      newArr._ease = this._ease
      return newArr
    }
  },

  getValue: (arr = []) => ({time, bpm}) =>{
    let speed = arr._speed ? arr._speed : 1
    let smooth = arr._smooth ? arr._smooth : 0
    let index = time * speed * (bpm / 60) + (arr._offset || 0)

    if (smooth!==0) {
      let ease = arr._ease ? arr._ease : easing['linear']
      let _index = index - (smooth / 2)
      let currValue = arr[Math.floor(_index % (arr.length))]
      let nextValue = arr[Math.floor((_index + 1) % (arr.length))]
      let t = Math.min((_index%1)/smooth,1)
      return ease(t) * (nextValue - currValue) + currValue
    }
    else {
      return arr[Math.floor(index % (arr.length))]
    }
  }
}

},{"./easing-functions.js":14}],13:[function(require,module,exports){
const Meyda = require('meyda')

class Audio {
  constructor ({
    numBins = 4,
    cutoff = 2,
    smooth = 0.4,
    max = 15,
    scale = 10,
    isDrawing = false
  }) {
    this.vol = 0
    this.scale = scale
    this.max = max
    this.cutoff = cutoff
    this.smooth = smooth
    this.setBins(numBins)

    // beat detection from: https://github.com/therewasaguy/p5-music-viz/blob/gh-pages/demos/01d_beat_detect_amplitude/sketch.js
    this.beat = {
      holdFrames: 20,
      threshold: 40,
      _cutoff: 0, // adaptive based on sound state
      decay: 0.98,
      _framesSinceBeat: 0 // keeps track of frames
    }

    this.onBeat = () => {
    //  console.log("beat")
    }

    this.canvas = document.createElement('canvas')
    this.canvas.width = 100
    this.canvas.height = 80
    this.canvas.style.width = "100px"
    this.canvas.style.height = "80px"
    this.canvas.style.position = 'absolute'
    this.canvas.style.right = '0px'
    this.canvas.style.bottom = '0px'
    document.body.appendChild(this.canvas)

    this.isDrawing = isDrawing
    this.ctx = this.canvas.getContext('2d')
    this.ctx.fillStyle="#DFFFFF"
    this.ctx.strokeStyle="#0ff"
    this.ctx.lineWidth=0.5
    if(window.navigator.mediaDevices) {
    window.navigator.mediaDevices.getUserMedia({video: false, audio: true})
      .then((stream) => {
      //  console.log('got mic stream', stream)
        this.stream = stream
        this.context = new AudioContext()
        //  this.context = new AudioContext()
        let audio_stream = this.context.createMediaStreamSource(stream)

      //  console.log(this.context)
        this.meyda = Meyda.createMeydaAnalyzer({
          audioContext: this.context,
          source: audio_stream,
          featureExtractors: [
            'loudness',
            //  'perceptualSpread',
            //  'perceptualSharpness',
            //  'spectralCentroid'
          ]
        })
      })
      .catch((err) => console.log('ERROR', err))
    }
  }

  detectBeat (level) {
    //console.log(level,   this.beat._cutoff)
    if (level > this.beat._cutoff && level > this.beat.threshold) {
      this.onBeat()
      this.beat._cutoff = level *1.2
      this.beat._framesSinceBeat = 0
    } else {
      if (this.beat._framesSinceBeat <= this.beat.holdFrames){
        this.beat._framesSinceBeat ++;
      } else {
        this.beat._cutoff *= this.beat.decay
        this.beat._cutoff = Math.max(  this.beat._cutoff, this.beat.threshold);
      }
    }
  }

  tick() {
   if(this.meyda){
     var features = this.meyda.get()
     if(features && features !== null){
       this.vol = features.loudness.total
       this.detectBeat(this.vol)
       // reduce loudness array to number of bins
       const reducer = (accumulator, currentValue) => accumulator + currentValue;
       let spacing = Math.floor(features.loudness.specific.length/this.bins.length)
       this.prevBins = this.bins.slice(0)
       this.bins = this.bins.map((bin, index) => {
         return features.loudness.specific.slice(index * spacing, (index + 1)*spacing).reduce(reducer)
       }).map((bin, index) => {
         // map to specified range

        // return (bin * (1.0 - this.smooth) + this.prevBins[index] * this.smooth)
          return (bin * (1.0 - this.settings[index].smooth) + this.prevBins[index] * this.settings[index].smooth)
       })
       // var y = this.canvas.height - scale*this.settings[index].cutoff
       // this.ctx.beginPath()
       // this.ctx.moveTo(index*spacing, y)
       // this.ctx.lineTo((index+1)*spacing, y)
       // this.ctx.stroke()
       //
       // var yMax = this.canvas.height - scale*(this.settings[index].scale + this.settings[index].cutoff)
       this.fft = this.bins.map((bin, index) => (
        // Math.max(0, (bin - this.cutoff) / (this.max - this.cutoff))
         Math.max(0, (bin - this.settings[index].cutoff)/this.settings[index].scale)
       ))
       if(this.isDrawing) this.draw()
     }
   }
  }

  setCutoff (cutoff) {
    this.cutoff = cutoff
    this.settings = this.settings.map((el) => {
      el.cutoff = cutoff
      return el
    })
  }

  setSmooth (smooth) {
    this.smooth = smooth
    this.settings = this.settings.map((el) => {
      el.smooth = smooth
      return el
    })
  }

  setBins (numBins) {
    this.bins = Array(numBins).fill(0)
    this.prevBins = Array(numBins).fill(0)
    this.fft = Array(numBins).fill(0)
    this.settings = Array(numBins).fill(0).map(() => ({
      cutoff: this.cutoff,
      scale: this.scale,
      smooth: this.smooth
    }))
    // to do: what to do in non-global mode?
    this.bins.forEach((bin, index) => {
      window['a' + index] = (scale = 1, offset = 0) => () => (a.fft[index] * scale + offset)
    })
  //  console.log(this.settings)
  }

  setScale(scale){
    this.scale = scale
    this.settings = this.settings.map((el) => {
      el.scale = scale
      return el
    })
  }

  setMax(max) {
    this.max = max
    console.log('set max is deprecated')
  }
  hide() {
    this.isDrawing = false
    this.canvas.style.display = 'none'
  }

  show() {
    this.isDrawing = true
    this.canvas.style.display = 'block'

  }

  draw () {
    this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height)
    var spacing = this.canvas.width / this.bins.length
    var scale = this.canvas.height / (this.max * 2)
  //  console.log(this.bins)
    this.bins.forEach((bin, index) => {

      var height = bin * scale

     this.ctx.fillRect(index * spacing, this.canvas.height - height, spacing, height)

  //   console.log(this.settings[index])
     var y = this.canvas.height - scale*this.settings[index].cutoff
     this.ctx.beginPath()
     this.ctx.moveTo(index*spacing, y)
     this.ctx.lineTo((index+1)*spacing, y)
     this.ctx.stroke()

     var yMax = this.canvas.height - scale*(this.settings[index].scale + this.settings[index].cutoff)
     this.ctx.beginPath()
     this.ctx.moveTo(index*spacing, yMax)
     this.ctx.lineTo((index+1)*spacing, yMax)
     this.ctx.stroke()
    })


    /*var y = this.canvas.height - scale*this.cutoff
    this.ctx.beginPath()
    this.ctx.moveTo(0, y)
    this.ctx.lineTo(this.canvas.width, y)
    this.ctx.stroke()
    var yMax = this.canvas.height - scale*this.max
    this.ctx.beginPath()
    this.ctx.moveTo(0, yMax)
    this.ctx.lineTo(this.canvas.width, yMax)
    this.ctx.stroke()*/
  }
}

module.exports = Audio

},{"meyda":110}],14:[function(require,module,exports){
// from https://gist.github.com/gre/1650294

module.exports = {
  // no easing, no acceleration
  linear: function (t) { return t },
  // accelerating from zero velocity
  easeInQuad: function (t) { return t*t },
  // decelerating to zero velocity
  easeOutQuad: function (t) { return t*(2-t) },
  // acceleration until halfway, then deceleration
  easeInOutQuad: function (t) { return t<.5 ? 2*t*t : -1+(4-2*t)*t },
  // accelerating from zero velocity
  easeInCubic: function (t) { return t*t*t },
  // decelerating to zero velocity
  easeOutCubic: function (t) { return (--t)*t*t+1 },
  // acceleration until halfway, then deceleration
  easeInOutCubic: function (t) { return t<.5 ? 4*t*t*t : (t-1)*(2*t-2)*(2*t-2)+1 },
  // accelerating from zero velocity
  easeInQuart: function (t) { return t*t*t*t },
  // decelerating to zero velocity
  easeOutQuart: function (t) { return 1-(--t)*t*t*t },
  // acceleration until halfway, then deceleration
  easeInOutQuart: function (t) { return t<.5 ? 8*t*t*t*t : 1-8*(--t)*t*t*t },
  // accelerating from zero velocity
  easeInQuint: function (t) { return t*t*t*t*t },
  // decelerating to zero velocity
  easeOutQuint: function (t) { return 1+(--t)*t*t*t*t },
  // acceleration until halfway, then deceleration
  easeInOutQuint: function (t) { return t<.5 ? 16*t*t*t*t*t : 1+16*(--t)*t*t*t*t },
  // sin shape
  sin: function (t) { return (1 + Math.sin(Math.PI*t-Math.PI/2))/2 }
}

},{}],15:[function(require,module,exports){
// https://github.com/mikolalysenko/mouse-event

'use strict'

function mouseButtons(ev) {
  if(typeof ev === 'object') {
    if('buttons' in ev) {
      return ev.buttons
    } else if('which' in ev) {
      var b = ev.which
      if(b === 2) {
        return 4
      } else if(b === 3) {
        return 2
      } else if(b > 0) {
        return 1<<(b-1)
      }
    } else if('button' in ev) {
      var b = ev.button
      if(b === 1) {
        return 4
      } else if(b === 2) {
        return 2
      } else if(b >= 0) {
        return 1<<b
      }
    }
  }
  return 0
}
exports.buttons = mouseButtons

function mouseElement(ev) {
  return ev.target || ev.srcElement || window
}
exports.element = mouseElement

function mouseRelativeX(ev) {
  if(typeof ev === 'object') {
    if('pageX' in ev) {
      return ev.pageX
    }
  }
  return 0
}
exports.x = mouseRelativeX

function mouseRelativeY(ev) {
  if(typeof ev === 'object') {
    if('pageY' in ev) {
      return ev.pageY
    }
  }
  return 0
}
exports.y = mouseRelativeY

},{}],16:[function(require,module,exports){
// based on https://github.com/mikolalysenko/mouse-change

'use strict'

module.exports = mouseListen

var mouse = require('./mouse-event.js')

function mouseListen (element, callback) {
  if (!callback) {
    callback = element
    element = window
  }

  var buttonState = 0
  var x = 0
  var y = 0
  var mods = {
    shift: false,
    alt: false,
    control: false,
    meta: false
  }
  var attached = false

  function updateMods (ev) {
    var changed = false
    if ('altKey' in ev) {
      changed = changed || ev.altKey !== mods.alt
      mods.alt = !!ev.altKey
    }
    if ('shiftKey' in ev) {
      changed = changed || ev.shiftKey !== mods.shift
      mods.shift = !!ev.shiftKey
    }
    if ('ctrlKey' in ev) {
      changed = changed || ev.ctrlKey !== mods.control
      mods.control = !!ev.ctrlKey
    }
    if ('metaKey' in ev) {
      changed = changed || ev.metaKey !== mods.meta
      mods.meta = !!ev.metaKey
    }
    return changed
  }

  function handleEvent (nextButtons, ev) {
    var nextX = mouse.x(ev)
    var nextY = mouse.y(ev)
    if ('buttons' in ev) {
      nextButtons = ev.buttons | 0
    }
    if (nextButtons !== buttonState ||
      nextX !== x ||
      nextY !== y ||
      updateMods(ev)) {
      buttonState = nextButtons | 0
      x = nextX || 0
      y = nextY || 0
      callback && callback(buttonState, x, y, mods)
    }
  }

  function clearState (ev) {
    handleEvent(0, ev)
  }

  function handleBlur () {
    if (buttonState ||
      x ||
      y ||
      mods.shift ||
      mods.alt ||
      mods.meta ||
      mods.control) {
      x = y = 0
      buttonState = 0
      mods.shift = mods.alt = mods.control = mods.meta = false
      callback && callback(0, 0, 0, mods)
    }
  }

  function handleMods (ev) {
    if (updateMods(ev)) {
      callback && callback(buttonState, x, y, mods)
    }
  }

  function handleMouseMove (ev) {
    if (mouse.buttons(ev) === 0) {
      handleEvent(0, ev)
    } else {
      handleEvent(buttonState, ev)
    }
  }

  function handleMouseDown (ev) {
    handleEvent(buttonState | mouse.buttons(ev), ev)
  }

  function handleMouseUp (ev) {
    handleEvent(buttonState & ~mouse.buttons(ev), ev)
  }

  function attachListeners () {
    if (attached) {
      return
    }
    attached = true

    element.addEventListener('mousemove', handleMouseMove)

    element.addEventListener('mousedown', handleMouseDown)

    element.addEventListener('mouseup', handleMouseUp)

    element.addEventListener('mouseleave', clearState)
    element.addEventListener('mouseenter', clearState)
    element.addEventListener('mouseout', clearState)
    element.addEventListener('mouseover', clearState)

    element.addEventListener('blur', handleBlur)

    element.addEventListener('keyup', handleMods)
    element.addEventListener('keydown', handleMods)
    element.addEventListener('keypress', handleMods)

    if (element !== window) {
      window.addEventListener('blur', handleBlur)

      window.addEventListener('keyup', handleMods)
      window.addEventListener('keydown', handleMods)
      window.addEventListener('keypress', handleMods)
    }
  }

  function detachListeners () {
    if (!attached) {
      return
    }
    attached = false

    element.removeEventListener('mousemove', handleMouseMove)

    element.removeEventListener('mousedown', handleMouseDown)

    element.removeEventListener('mouseup', handleMouseUp)

    element.removeEventListener('mouseleave', clearState)
    element.removeEventListener('mouseenter', clearState)
    element.removeEventListener('mouseout', clearState)
    element.removeEventListener('mouseover', clearState)

    element.removeEventListener('blur', handleBlur)

    element.removeEventListener('keyup', handleMods)
    element.removeEventListener('keydown', handleMods)
    element.removeEventListener('keypress', handleMods)

    if (element !== window) {
      window.removeEventListener('blur', handleBlur)

      window.removeEventListener('keyup', handleMods)
      window.removeEventListener('keydown', handleMods)
      window.removeEventListener('keypress', handleMods)
    }
  }

  // Attach listeners
  attachListeners()

  var result = {
    element: element
  }

  Object.defineProperties(result, {
    enabled: {
      get: function () { return attached },
      set: function (f) {
        if (f) {
          attachListeners()
        } else {
          detachListeners()
        }
      },
      enumerable: true
    },
    buttons: {
      get: function () { return buttonState },
      enumerable: true
    },
    x: {
      get: function () { return x },
      enumerable: true
    },
    y: {
      get: function () { return y },
      enumerable: true
    },
    mods: {
      get: function () { return mods },
      enumerable: true
    }
  })

  return result
}

},{"./mouse-event.js":15}],17:[function(require,module,exports){
// attempt custom evaluation sandbox for hydra functions
// for now, just avoids polluting the global namespace
// should probably be replaced with an abstract syntax tree

module.exports = (parent) => {
  var initialCode = ``

  var sandbox = createSandbox(initialCode)

  var addToContext = (name, object) => {
    initialCode += `
      var ${name} = ${object}
    `
    sandbox = createSandbox(initialCode)
  }


  return {
    addToContext: addToContext,
    eval: (code) => sandbox.eval(code)
  }

  function createSandbox (initial) {
    eval(initial)
    // optional params
    var localEval = function (code)  {
      eval(code)
    }

    // API/data for end-user
    return {
      eval: localEval
    }
  }
}

},{}],18:[function(require,module,exports){

module.exports = function (options) {
  return new Promise(function(resolve, reject) {
    //  async function startCapture(displayMediaOptions) {
    navigator.mediaDevices.getDisplayMedia(options).then((stream) => {
      const video = document.createElement('video')
      video.srcObject = stream
      video.addEventListener('loadedmetadata', () => {
        video.play()
        resolve({video: video})
      })
    }).catch((err) => reject(err))
  })
}

},{}],19:[function(require,module,exports){
class VideoRecorder {
  constructor(stream) {
    this.mediaSource = new MediaSource()
    this.stream = stream

    // testing using a recording as input
    this.output = document.createElement('video')
    this.output.autoplay = true
    this.output.loop = true

    let self = this
    this.mediaSource.addEventListener('sourceopen', () => {
      console.log('MediaSource opened');
      self.sourceBuffer = self.mediaSource.addSourceBuffer('video/webm; codecs="vp8"');
      console.log('Source buffer: ', sourceBuffer);
    })
  }

  start() {
  //  let options = {mimeType: 'video/webm'};

//   let options = {mimeType: 'video/webm;codecs=h264'};
   let options = {mimeType: 'video/webm;codecs=vp9'};

    this.recordedBlobs = []
    try {
     this.mediaRecorder = new MediaRecorder(this.stream, options)
    } catch (e0) {
     console.log('Unable to create MediaRecorder with options Object: ', e0)
     try {
       options = {mimeType: 'video/webm,codecs=vp9'}
       this.mediaRecorder = new MediaRecorder(this.stream, options)
     } catch (e1) {
       console.log('Unable to create MediaRecorder with options Object: ', e1)
       try {
         options = 'video/vp8' // Chrome 47
         this.mediaRecorder = new MediaRecorder(this.stream, options)
       } catch (e2) {
         alert('MediaRecorder is not supported by this browser.\n\n' +
           'Try Firefox 29 or later, or Chrome 47 or later, ' +
           'with Enable experimental Web Platform features enabled from chrome://flags.')
         console.error('Exception while creating MediaRecorder:', e2)
         return
       }
     }
   }
   console.log('Created MediaRecorder', this.mediaRecorder, 'with options', options);
   this.mediaRecorder.onstop = this._handleStop.bind(this)
   this.mediaRecorder.ondataavailable = this._handleDataAvailable.bind(this)
   this.mediaRecorder.start(100) // collect 100ms of data
   console.log('MediaRecorder started', this.mediaRecorder)
 }

  
   stop(){
     this.mediaRecorder.stop()
   }

 _handleStop() {
   //const superBuffer = new Blob(recordedBlobs, {type: 'video/webm'})
   // const blob = new Blob(this.recordedBlobs, {type: 'video/webm;codecs=h264'})
  const blob = new Blob(this.recordedBlobs, {type: this.mediaRecorder.mimeType})
   const url = window.URL.createObjectURL(blob)
   this.output.src = url

    const a = document.createElement('a')
    a.style.display = 'none'
    a.href = url
    let d = new Date()
    a.download = `hydra-${d.getFullYear()}-${d.getMonth() + 1}-${d.getDate()}-${d.getHours()}.${d.getMinutes()}.${d.getSeconds()}.webm`
    document.body.appendChild(a)
    a.click()
    setTimeout(() => {
      document.body.removeChild(a);
      window.URL.revokeObjectURL(url);
    }, 300);
  }

  _handleDataAvailable(event) {
    if (event.data && event.data.size > 0) {
      this.recordedBlobs.push(event.data);
    }
  }
}

module.exports = VideoRecorder

},{}],20:[function(require,module,exports){
//const enumerateDevices = require('enumerate-devices')

module.exports = function (deviceId) {
  return navigator.mediaDevices.enumerateDevices()
    .then(devices => devices.filter(devices => devices.kind === 'videoinput'))
    .then(cameras => {
      let constraints = { audio: false, video: true}
      if (cameras[deviceId]) {
        constraints['video'] = {
          deviceId: { exact: cameras[deviceId].deviceId }
        }
      }
    //  console.log(cameras)
      return window.navigator.mediaDevices.getUserMedia(constraints)
    })
    .then(stream => {
      const video = document.createElement('video')
      video.setAttribute('autoplay', '')
      video.setAttribute('muted', '')
      video.setAttribute('playsinline', '')
      //  video.src = window.URL.createObjectURL(stream)
      video.srcObject = stream
      return new Promise((resolve, reject) => {
        video.addEventListener('loadedmetadata', () => {
          video.play().then(() => resolve({video: video}))
        })
      })
    })
    .catch(console.log.bind(console))
}

},{}],21:[function(require,module,exports){
//const transforms = require('./glsl-transforms.js')

var Output = function ({ regl, precision, label = "", width, height}) {
  this.regl = regl
  this.precision = precision
  this.label = label
  this.positionBuffer = this.regl.buffer([
    [-2, 0],
    [0, -2],
    [2, 2]
  ])

  this.draw = () => {}
  this.init()
  this.pingPongIndex = 0

  // for each output, create two fbos for pingponging
  this.fbos = (Array(2)).fill().map(() => this.regl.framebuffer({
    color: this.regl.texture({
      mag: 'nearest',
      width: width,
      height: height,
      format: 'rgba'
    }),
    depthStencil: false
  }))

  // array containing render passes
//  this.passes = []
}

Output.prototype.resize = function(width, height) {
  this.fbos.forEach((fbo) => {
    fbo.resize(width, height)
  })
//  console.log(this)
}


Output.prototype.getCurrent = function () {
  return this.fbos[this.pingPongIndex]
}

Output.prototype.getTexture = function () {
   var index = this.pingPongIndex ? 0 : 1
  return this.fbos[index]
}

Output.prototype.init = function () {
//  console.log('clearing')
  this.transformIndex = 0
  this.fragHeader = `
  precision ${this.precision} float;

  uniform float time;
  varying vec2 uv;
  `

  this.fragBody = ``

  this.vert = `
  precision ${this.precision} float;
  attribute vec2 position;
  varying vec2 uv;

  void main () {
    uv = position;
    gl_Position = vec4(2.0 * position - 1.0, 0, 1);
  }`

  this.attributes = {
    position: this.positionBuffer
  }
  this.uniforms = {
    time: this.regl.prop('time'),
    resolution: this.regl.prop('resolution')
  }

  this.frag = `
       ${this.fragHeader}

      void main () {
        vec4 c = vec4(0, 0, 0, 0);
        vec2 st = uv;
        ${this.fragBody}
        gl_FragColor = c;
      }
  `
  return this
}


Output.prototype.render = function (passes) {
  let pass = passes[0]
  //console.log('pass', pass, this.pingPongIndex)
  var self = this
      var uniforms = Object.assign(pass.uniforms, { prevBuffer:  () =>  {
             //var index = this.pingPongIndex ? 0 : 1
          //   var index = self.pingPong[(passIndex+1)%2]
          //  console.log('ping pong', self.pingPongIndex)
            return self.fbos[self.pingPongIndex]
          }
        })

  self.draw = self.regl({
    frag: pass.frag,
    vert: self.vert,
    attributes: self.attributes,
    uniforms: uniforms,
    count: 3,
    framebuffer: () => {
      self.pingPongIndex = self.pingPongIndex ? 0 : 1
      return self.fbos[self.pingPongIndex]
    }
  })
}


Output.prototype.tick = function (props) {
//  console.log(props)
  this.draw(props)
}

module.exports = Output

},{}],22:[function(require,module,exports){
module.exports = ({ editor, gallery, menu, repl, log }) => {
  editor.on('editor:evalLine', () => {
    console.log('evaluating')
    repl.eval(editor.getLine())
  })

  editor.on('editor:evalBlock', () => {
    console.log('evaluating block')
    repl.eval(editor.getCurrentBlock().text)
  })

  editor.on('editor:evalAll', () => {
    menu.runAll()
  })

  editor.on('gallery:shareSketch', () => {
    menu.shareSketch()
  })

  editor.on('editor:formatCode', () => {
    menu.formatCode()
  })

  editor.on('gallery:saveToURL', () => {
    gallery.saveLocally(editor.getValue())
  })

  editor.on('hideAll', () => {
    editor.toggle()
    log.toggle()
  })

  editor.on('screencap', () => {
    screencap()
    const text = editor.getValue()
    const data = new Blob([text], {type: 'text/plain'});
    const a = document.createElement('a')
    a.style.display = 'none'
    let d = new Date()
    a.download = `hydra-${d.getFullYear()}-${d.getMonth() + 1}-${d.getDate()}-${d.getHours()}.${d.getMinutes()}.${d.getSeconds()}.js`
    a.href = URL.createObjectURL(data)
    a.click()

    setTimeout(() => {
      window.URL.revokeObjectURL(a.href);
    }, 300);
  })

  editor.on('editor:toggleComment', () => {
    editor.cm.toggleComment()
  })

  editor.on('*', (val) => {
    console.log('calling event', val, this)
  })
}


// module.exports = {
//   init: ({ editor, gallery, menu, repl, log }) => {
//     window.onkeydown = (e) => {
//       if (e.ctrlKey === true) {
//         if (e.shiftKey === true) {
//           // shift - ctrl - enter: evalAll
//           if (e.keyCode === 13) {
//             e.preventDefault()
//             menu.runAll()
//           }

//           // shift - ctrl - G: share sketch
//           if (e.keyCode === 71) {
//             e.preventDefault()
//             menu.shareSketch()
//           }

//           // shift - ctrl - F: format code
//           if (e.keyCode === 70) {
//             e.preventDefault()
//             menu.formatCode()
//           }

//           // shift - ctrl - l: save to url
//           if (e.keyCode === 76) {
//             e.preventDefault()
//             gallery.saveLocally(editor.getValue())
//           }

//           // shift - ctrl - h: toggle editor
//           if (e.keyCode === 72) {
//             e.preventDefault()
//             editor.toggle()
//             log.toggle()
//           }

//           // shift - ctrl - s: screencap
//           if (e.keyCode === 83) {
//             e.preventDefault()
//             screencap()
//           }

//           // Point Mutation Glitcher Key Commands and history commands (left and right arrows)
//           // disabled as causing confusion with editor commands
//           // // right arrow key
//           // if (e.keyCode === 39) {
//           //   e.preventDefault()
//           //   window.history.forward()
//           // }
//           // // left arrow
//           // if (e.keyCode === 37) {
//           //   e.preventDefault()
//           //   window.history.back()
//           // }
//           // // up arrow
//           // if (e.keyCode === 38) {
//           //   e.preventDefault()
//           //   editor.mutator.doRedo()
//           // }
//           // // down arrow
//           // if (e.keyCode === 40) {
//           //   editor.mutator.mutate({ reroll: true, event: e })
//           //   menu.formatCode()
//           //   gallery.saveLocally(editor.getValue())
//           // }
//         } else {
//           // ctrl-enter: evalLine
//           if (e.keyCode === 13) {
//             e.preventDefault()
//             //  console.log('eval line')
//             repl.eval(editor.getLine())
//           }

//           // ctrl - /: toggle comment
//           if (e.keyCode === 191) {
//             e.preventDefault()
//             editor.cm.toggleComment()
//           }
//         }
//       }

//       if (e.altKey === true) {
//         // alt - enter: evalBlock
//         if (e.keyCode === 13) {
//           e.preventDefault()
//           repl.eval(editor.getCurrentBlock().text)
//         }
//       }
//     }
//   }
// }

},{}],23:[function(require,module,exports){
/* eslint-disable no-eval */
var CodeMirror = require('codemirror-minified/lib/codemirror')
require('codemirror-minified/mode/javascript/javascript')
require('codemirror-minified/addon/hint/javascript-hint')
require('codemirror-minified/addon/hint/show-hint')
require('codemirror-minified/addon/selection/mark-selection')
require('codemirror-minified/addon/comment/comment')

const EventEmitter = require('nanobus')
const keymaps = require('./keymaps.js')
var Mutator = require('../randomizer/Mutator.js');


var isShowing = true


module.exports = class Editor extends EventEmitter {
  constructor() {
    super()
    console.log("*** Editor class created");
    var self = this

    var container = document.createElement('div')
    container.setAttribute('id', 'editor-container')
    var el = document.createElement('TEXTAREA')
    document.body.appendChild(container)
    container.appendChild(el)

    this.mutator = new Mutator(this);

    const extraKeys = {}
    Object.entries(keymaps).forEach(([key, value]) => extraKeys[key] = () => this.emit(value))

    const opts = {
      theme: 'tomorrow-night-eighties',
      value: 'hello',
      mode: { name: 'javascript', globalVars: true },
      lineWrapping: true,
      styleSelectedText: true,
      extraKeys: extraKeys
    }

    this.cm = CodeMirror.fromTextArea(el, opts)
    window.cm = this.cm
    this.cm.refresh()

    this.show()
    // // TO DO: add show code param
    let searchParams = new URLSearchParams(window.location.search)
    let showCode = searchParams.get('show-code')

    if (showCode === "false") {
      this.hide()
    }
  }

  clear() {
    this.cm.setValue('\n \n // Type some code on a new line (such as "osc().out()"), and press CTRL+shift+enter')
  }

  setValue(val) {
    this.cm.setValue(val)
  }

  getValue() {
    return this.cm.getValue()
  }

  hide() {
    console.log('hiding')
    var l = document.getElementsByClassName('CodeMirror')[0]
    var m = document.getElementById('modal-header')
    l.style.opacity = 0
    m.style.opacity = 0
    this.isShowing = false
  }

  show() {
    var l = document.getElementsByClassName('CodeMirror')[0]
    var m = document.getElementById('modal-header')
    l.style.opacity= 1
    m.style.opacity = 1
    l.style.pointerEvents = 'all'
    this.isShowing = true
  }

  toggle() {
    if (this.isShowing) {
      this.hide()
    } else {
      this.show()
    }
  }

  getLine() {
    var c = this.cm.getCursor()
    var s = this.cm.getLine(c.line)
    //  this.cm.markText({line: c.line, ch:0}, {line: c.line+1, ch:0}, {className: 'styled-background'})
    this.flashCode({ line: c.line, ch: 0 }, { line: c.line + 1, ch: 0 })
    return s
  }

  flashCode(start, end) {
    if (!start) start = { line: this.cm.firstLine(), ch: 0 }
    if (!end) end = { line: this.cm.lastLine() + 1, ch: 0 }
    var marker = this.cm.markText(start, end, { className: 'styled-background' })
    setTimeout(() => marker.clear(), 300)
  }


  getCurrentBlock() { // thanks to graham wakefield + gibber
    var editor = this.cm
    var pos = editor.getCursor()
    var startline = pos.line
    var endline = pos.line
    while (startline > 0 && editor.getLine(startline) !== '') {
      startline--
    }
    while (endline < editor.lineCount() && editor.getLine(endline) !== '') {
      endline++
    }
    var pos1 = {
      line: startline,
      ch: 0
    }
    var pos2 = {
      line: endline,
      ch: 0
    }
    var str = editor.getRange(pos1, pos2)

    this.flashCode(pos1, pos2)

    return {
      start: pos1,
      end: pos2,
      text: str
    }
  }

}


},{"../randomizer/Mutator.js":32,"./keymaps.js":24,"codemirror-minified/addon/comment/comment":47,"codemirror-minified/addon/hint/javascript-hint":48,"codemirror-minified/addon/hint/show-hint":49,"codemirror-minified/addon/selection/mark-selection":50,"codemirror-minified/lib/codemirror":51,"codemirror-minified/mode/javascript/javascript":52,"nanobus":112}],24:[function(require,module,exports){
module.exports = { 
    'Ctrl-Enter': 'editor:evalLine',
    'Ctrl-/': 'editor:toggleComment',
    'Alt-Enter': 'editor:evalBlock',
    'Shift-Ctrl-Enter': 'editor:evalAll',
    'Shift-Ctrl-G': 'gallery:shareSketch',
    'Shift-Ctrl-F': 'editor:formatCode',
    'Shift-Ctrl-L': 'gallery:saveToURL',
    'Shift-Ctrl-H': 'hideAll',
    'Shift-Ctrl-S': 'screencap'
}
},{}],25:[function(require,module,exports){
var logElement

module.exports = {
  init: () => {
    logElement = document.createElement('div')
    logElement.className = "console cm-s-tomorrow-night-eighties"
    document.body.appendChild(logElement)
  },
  log: (msg, className = "") => {
    if(logElement) logElement.innerHTML =` >> <span class=${className}> ${msg} </span> `
  },
  hide: () => {
    if(logElement) logElement.style.display = 'none'
  },
  show: () => {
    if(logElement) logElement.style.display = 'block'
  },
  toggle: () => {
    if(logElement.style.display == 'none') {
      logElement.style.display = 'block'
    } else {
      logElement.style.display = 'none'
    }
  }
}

},{}],26:[function(require,module,exports){
module.exports=[
  {
    "sketch_id": "example_0",
  "code": "JTJGJTJGRmxvciUyMGRlJTIwRnVlZ28lMEElMEFzaGFwZSgyMDAlMkMwLjUlMkMxLjUpJTBBLnNjYWxlKDAuNSUyQzAuNSklMEEuY29sb3IoJTVCMC41JTJDMiU1RC5zbW9vdGgoMSklMkMwLjMlMkMwKSUwQS5yZXBlYXQoMiUyQzIpJTBBLm1vZHVsYXRlU2NhbGUob3NjKDMlMkMwLjUpJTJDLTAuNiklMEEuYWRkKG8wJTJDMC41KSUwQS5zY2FsZSgwLjkpJTBBLm91dCgp"
},{
  "sketch_id": "example_3",
  "code":"JTJGJTJGJTIwYnklMjBPbGl2aWElMjBKYWNrJTBBJTBBb3NjKDIwJTJDJTIwMC4wMyUyQyUyMDEuNykua2FsZWlkKCkubXVsdChvc2MoMjAlMkMlMjAwLjAwMSUyQyUyMDApLnJvdGF0ZSgxLjU4KSkuYmxlbmQobzAlMkMlMjAwLjk0KS5tb2R1bGF0ZVNjYWxlKG9zYygxMCUyQyUyMDApJTJDLTAuMDMpLnNjYWxlKDAuOCUyQyUyMCgpJTIwJTNEJTNFJTIwKDEuMDUlMjAlMkIlMjAwLjElMjAqJTIwTWF0aC5zaW4oMC4wNSp0aW1lKSkpLm91dChvMCk="
},{
  "sketch_id": "example_4",
  "code":"JTJGJTJGJTIwYnklMjBOZWxzb24lMjBWZXJhJTBBJTJGJTJGJTIwdHdpdHRlciUzQSUyMCU0MG5lbF9zb25vbG9naWElMEElMEFvc2MoOCUyQy0wLjUlMkMlMjAxKS5jb2xvcigtMS41JTJDJTIwLTEuNSUyQyUyMC0xLjUpLmJsZW5kKG8wKS5yb3RhdGUoLTAuNSUyQyUyMC0wLjUpLm1vZHVsYXRlKHNoYXBlKDQpLnJvdGF0ZSgwLjUlMkMlMjAwLjUpLnNjYWxlKDIpLnJlcGVhdFgoMiUyQyUyMDIpLm1vZHVsYXRlKG8wJTJDJTIwKCklMjAlM0QlM0UlMjBtb3VzZS54JTIwKiUyMDAuMDAwNSkucmVwZWF0WSgyJTJDJTIwMikpLm91dChvMCklMEElMEElMEElMEElMEElMEE="
},{
  "sketch_id": "example_6",
  "code":"JTJGJTJGJTIwYnklMjBEJUMzJUE5Ym9yYSUyMEZhbGxlaXJvcyUyMEdvbnphbGVzJTBBJTJGJTJGJTIwaHR0cHMlM0ElMkYlMkZ3d3cuZ29uemFsZXNkZWJvcmEuY29tJTJGJTBBJTBBb3NjKDUpLmFkZChub2lzZSg1JTJDJTIwMikpLmNvbG9yKDAlMkMlMjAwJTJDJTIwMykuY29sb3JhbWEoMC40KS5vdXQoKSUwQSUwQSUwQSUwQQ=="
},{
  "sketch_id": "example_8",
  "code":"JTJGJTJGJTIwYnklMjBSb2RyaWdvJTIwVmVsYXNjbyUwQSUyRiUyRiUyMGh0dHBzJTNBJTJGJTJGeWVjdG8uZ2l0aHViLmlvJTJGJTBBJTBBb3NjKDEwNyUyQyUyMDAlMkMlMjAwLjcpLmNvbG9yKDElMkMlMjAwJTJDJTIwMSkucm90YXRlKDAlMkMlMjAtMC4wOCkubW9kdWxhdGVSb3RhdGUobzElMkMlMjAwLjQpLm91dChvMCklMEFvc2MoMzMpLnJvdGF0ZSgyJTJDJTIwMC44KS5tb2R1bGF0ZVJvdGF0ZShvMCUyQyUyMCgpJTIwJTNEJTNFJTIwKGEuZmZ0JTVCMCU1RCoyKSkub3V0KG8xKSUwQQ=="
},{
  "sketch_id": "example_9",
  "code":"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"
},{
  "sketch_id": "example_10",
  "code":"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"
},{
  "sketch_id": "example_11",
  "code": "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"
},{
  "sketch_id": "example_13",
  "code":"JTJGJTJGJTIwYWNpZCUyMGJ1cyUyMHNlYXQlMEElMkYlMkYlMjBieSUyMFdpbGwlMjBIdW1waHJleXMlMEElMkYlMkYlMjBodHRwcyUzQSUyRiUyRmdpdGh1Yi5jb20lMkZUaGVXaXNweSUwQSUwQW9zYygxMDUpLmNvbG9yKDAuNSUyQzAuMSUyQzAuOCkucm90YXRlKDAuMTElMkMlMjAwLjEpLm1vZHVsYXRlKG9zYygxMCkucm90YXRlKDAuMykuYWRkKG8wJTJDJTIwMC4xKSkuYWRkKG9zYygyMCUyQzAuMDElMkMxKS5jb2xvcigwJTJDMC44JTJDMSkpLm91dChvMCklMEFvc2MoNTAlMkMwLjA1JTJDJTIwMC43KS5jb2xvcigxJTJDMC43JTJDMC41KS5kaWZmKG8wKS5tb2R1bGF0ZShvMSUyQzAuMDUpLm91dChvMSklMEFyZW5kZXIobzEp"
},
{
  "sketch_id": "example_14",
  "code": "JTJGJTJGJTIwYnklMjBPbGl2aWElMjBKYWNrJTBBJTJGJTJGJTIwJTQwX29qYWNrXyUwQSUwQW9zYygyMCUyQyUyMDAuMDElMkMlMjAxLjEpJTBBJTA5LmthbGVpZCg1KSUwQSUwOS5jb2xvcigyLjgzJTJDMC45MSUyQzAuMzkpJTBBJTA5LnJvdGF0ZSgwJTJDJTIwMC4xKSUwQSUwOS5tb2R1bGF0ZShvMCUyQyUyMCgpJTIwJTNEJTNFJTIwbW91c2UueCUyMColMjAwLjAwMDMpJTBBJTA5LnNjYWxlKDEuMDEpJTBBJTIwJTIwJTA5Lm91dChvMCk="
},
{
  "sketch_id": "example_15",
  "code": "JTJGJTJGJTIwYnklMjBPbGl2aWElMjBKYWNrJTBBJTJGJTJGJTIwaHR0cHMlM0ElMkYlMkZvamFjay5naXRodWIuaW8lMEElMEFvc2MoMTAwJTJDJTIwMC4wMSUyQyUyMDEuNCklMEElMDkucm90YXRlKDAlMkMlMjAwLjEpJTBBJTA5Lm11bHQob3NjKDEwJTJDJTIwMC4xKS5tb2R1bGF0ZShvc2MoMTApLnJvdGF0ZSgwJTJDJTIwLTAuMSklMkMlMjAxKSklMEElMDkuY29sb3IoMi44MyUyQzAuOTElMkMwLjM5KSUwQSUyMCUyMC5vdXQobzAp"
},
{
  "sketch_id": "example_16",
  "code": "JTJGJTJGJTIwYnklMjBPbGl2aWElMjBKYWNrJTBBJTJGJTJGJTIwaHR0cHMlM0ElMkYlMkZvamFjay5naXRodWIuaW8lMEElMEFvc2MoNCUyQyUyMDAuMSUyQyUyMDAuOCkuY29sb3IoMS4wNCUyQzAlMkMlMjAtMS4xKS5yb3RhdGUoMC4zMCUyQyUyMDAuMSkucGl4ZWxhdGUoMiUyQyUyMDIwKS5tb2R1bGF0ZShub2lzZSgyLjUpJTJDJTIwKCklMjAlM0QlM0UlMjAxLjUlMjAqJTIwTWF0aC5zaW4oMC4wOCUyMColMjB0aW1lKSkub3V0KG8wKQ=="
},
{
  "sketch_id": "example_17",
  "code": "JTJGJTJGJTIwbW9pcmUlMEElMkYlMkYlMjBieSUyME9saXZpYSUyMEphY2slMEElMkYlMkYlMjB0d2l0dGVyJTNBJTIwJTQwX29qYWNrXyUwQSUwQXBhdHRlcm4lMjAlM0QlMjAoKSUyMCUzRCUzRSUyMG9zYygyMDAlMkMlMjAwKS5rYWxlaWQoMjAwKS5zY2FsZSgxJTJDJTIwMC40KSUwQSUyRiUyRiUwQXBhdHRlcm4oKSUwQSUyMCUyMC5zY3JvbGxYKDAuMSUyQyUyMDAuMDEpJTBBJTIwJTIwLm11bHQocGF0dGVybigpKSUwQSUyMCUyMC5vdXQoKQ=="
},
{
  "sketch_id": "example_18",
  "code": "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"
},
{
  "sketch_id": "rangga_0",
  "code": "JTJGJTJGJTIwRHJlYW15JTIwRGlhbW9uZCUwQSUyRiUyRiUyMGJ5JTIwUmFuZ2dhJTIwUHVybmFtYSUyMEFqaSUwQSUyRiUyRiUyMGh0dHBzJTNBJTJGJTJGcmFuZ2dhcHVybmFtYWFqaTEud2l4c2l0ZS5jb20lMkZwb3J0Zm9saW8lMEElMEFvc2MoNyUyQy0wLjEyNSkubW9kdWxhdGUodm9yb25vaSgxKSkuZGlmZih2b3Jvbm9pKDEpLm11bHQoZ3JhZGllbnQoLTEpLmx1bWEoMC4xMjUpKSklMEElMjAlMjAubHVtYSgwLjEyNSklMEElMjAlMjAuYWRkKHNoYXBlKDclMkMlMjAwLjUpJTBBJTIwJTIwJTIwJTIwJTIwJTIwJTIwLm11bHQodm9yb25vaSgxMCUyQzIpLmJsZW5kKG8wKS5kaWZmKGdyYWRpZW50KDEpKS5tb2R1bGF0ZSh2b3Jvbm9pKCkpKSklMEElMjAlMjAuc2Nyb2xsWSgtMC4xKSUwQSUyMCUyMC5zY3JvbGxYKDAuMTI1KSUwQSUyMCUyMC5ibGVuZChvMCklMEElMjAlMjAuYmxlbmQobzApJTBBJTIwJTIwLm91dCgpJTBB"
},
{
  "sketch_id": "rangga_1",
  "code": "JTJGJTJGJTIwVGFnJTIwJTI2JTIwU3dlZXAlMEElMkYlMkYlMjBieSUyMFJhbmdnYSUyMFB1cm5hbWElMjBBamklMEElMkYlMkYlMjBodHRwcyUzQSUyRiUyRnJhbmdnYXB1cm5hbWFhamkxLndpeHNpdGUuY29tJTJGcG9ydGZvbGlvJTBBJTBBb3NjKDUlMkMwLjEyNSkuY29sb3JhbWEoMSklMEElMjAlMjAubHVtYSgwLjEyNSkuYWRkKHNoYXBlKDElMkMwLjUpLmx1bWEoMikuZGlmZihncmFkaWVudCgxKSkpJTBBJTIwJTIwLmRpZmYob3NjKC0xJTJDLTAuMjUpKS5ibGVuZChvMCkuY29sb3IoMCUyQzIuNSUyQzEuNzUpJTBBJTIwJTIwLm91dCgp"
},
{
  "sketch_id": "rangga_2",
  "code": "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"
},
{
  "sketch_id": "rangga_3",
  "code": "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"
},
{
  "sketch_id": "rangga_4",
  "code": "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"
},
{
  "sketch_id": "marianne_0",
  "code": "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"
},
{
  "sketch_id": "marianne_1",
  "code": "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"

},
{
  "sketch_id": "naoto_0",
  "code": "JTJGJTJGJTIwJTQwbmFvdG9faGllZGElMEFvc2MoMjAlMkMlMjAwLjElMkMlMjAwKS5jb2xvcigwJTJDJTIwMSUyQyUyMDIpLnJvdGF0ZSgxLjU3JTJGMikub3V0KG8xKSUwQW9zYygzMCUyQyUyMDAuMDElMkMlMjAwKS5jb2xvcigyJTJDJTIwMC43JTJDJTIwMSkubW9kdWxhdGUobzElMkMlMjAwKS5hZGQobzElMkMxKS5tb2R1bGF0ZVBpeGVsYXRlKG8xJTJDMSUyQzEwKS5vdXQobzAp"
},
{
  "sketch_id": "naoto_1",
  "code": "JTJGJTJGJTIwJTQwbmFvdG9faGllZGElMEFzb2xpZCgwLjIlMkMwLjYlMkMwLjkpLmxheWVyKG9zYygzMS40JTJDMCkudGhyZXNoKDAuNykubHVtYSgpLm1vZHVsYXRlKG9zYyg0JTJDMSkucm90YXRlKDEpJTJDMC4wNSkuY29sb3IoMCUyQzAlMkMwKSkubGF5ZXIob3NjKDMxLjQlMkMwKS50aHJlc2goMC43KS5sdW1hKCkubW9kdWxhdGUob3NjKDQlMkMxKS5yb3RhdGUoMSklMkMwLjEpKS5vdXQoKQ=="
},
{
  "sketch_id": "ritchse_0",
  "code": "JTJGJTJGcmFuZG9tJTIwdHJ5cG9waG9iaWElMjAtJTIwY2hhbmdlcyUyMGV2ZXJ5dGltZSUyMHlvdSUyMGxvYWQlMjBpdCElMEElMkYlMkZieSUyMFJpdGNoc2UlMEElMkYlMkZpbnN0YWdyYW0uY29tJTJGcml0Y2hzZSUwQSUyMCUwQWZ1bmN0aW9uJTIwcihtaW4lM0QwJTJDbWF4JTNEMSklMjAlN0IlMjByZXR1cm4lMjBNYXRoLnJhbmRvbSgpKihtYXgtbWluKSUyQm1pbiUzQiUyMCU3RCUwQSUyMCUwQXNvbGlkKDElMkMxJTJDMSklMEElMjAlMjAlMDkuZGlmZihzaGFwZSglNUI0JTJDNCUyQzQlMkMyNCU1RC5zbW9vdGgoKS5mYXN0KC41KSUyQ3IoMC42JTJDMC45MyklMkMuMDkpLnJlcGVhdCgyMCUyQzEwKSklMEElMDkubW9kdWxhdGVTY2FsZShvc2MoOCkucm90YXRlKHIoLS41JTJDLjUpKSUyQy41MiklMEElMDkuYWRkKCUwQSUyMCUyMCUwOSUwOXNyYyhvMCkuc2NhbGUoMC45NjUpLnJvdGF0ZSguMDEyKihNYXRoLnJvdW5kKHIoLTIlMkMxKSkpKSUwQSUyMCUyMCUwOSUwOS5jb2xvcihyKCklMkNyKCklMkNyKCkpJTBBJTIwJTIwJTIwJTIwJTA5Lm1vZHVsYXRlUm90YXRlKG8wJTJDcigwJTJDMC41KSklMEElMjAlMjAlMDklMDkuYnJpZ2h0bmVzcyguMTUpJTBBJTIwJTIwJTA5JTA5JTJDLjcpJTBBJTA5Lm91dCgp"
},
{
  "sketch_id": "ritchse_1",
  "code": "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"
},
{
  "sketch_id": "ritchse_2",
  "code": "JTJGJTJGdHJvcGljYWwlMjBqdWljZSUwQSUyRiUyRmJ5JTIwUml0Y2hzZSUwQSUyRiUyRmluc3RhZ3JhbS5jb20lMkZyaXRjaHNlJTBBJTIwJTBBdm9yb25vaSgyJTJDMC4zJTJDMC4yKS5zaGlmdCgwLjUpJTBBLm1vZHVsYXRlUGl4ZWxhdGUodm9yb25vaSg0JTJDMC4yKSUyQzMyJTJDMiklMEEuc2NhbGUoKCklM0QlM0UxJTJCKE1hdGguc2luKHRpbWUqMi41KSowLjA1KSklMEEuZGlmZih2b3Jvbm9pKDMpLnNoaWZ0KDAuNikpJTBBLmRpZmYob3NjKDIlMkMwLjE1JTJDMS4xKS5yb3RhdGUoKSklMEEuYnJpZ2h0bmVzcygwLjEpLmNvbnRyYXN0KDEuMikuc2F0dXJhdGUoMS4yKSUwQSUwOS5vdXQoKSUwQXNwZWVkJTIwJTNEJTIwMC44"
},
{
  "sketch_id": "ritchse_3",
  "code": "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"
},
{
  "sketch_id": "ritchse_4",
  "code": "JTJGJTJGJTIwZGlzaW50ZWdyYXRpb24lMEElMkYlMkYlMjBieSUyMFJpdGNoc2UlMEElMkYlMkYlMjBpbnN0YWdyYW0uY29tJTJGcml0Y2hzZSUwQSUyMCUwQW9zYyg1JTJDLjEpLm1vZHVsYXRlKG5vaXNlKDYpJTJDLjIyKS5kaWZmKG8wKSUwQSUyMCUyMCUwOS5tb2R1bGF0ZVNjcm9sbFkob3NjKDIpLm1vZHVsYXRlKG9zYygpLnJvdGF0ZSgpJTJDLjExKSklMEElMDkuc2NhbGUoLjcyKS5jb2xvcigwLjk5JTJDMS4wMTQlMkMxKSUwQSUyMCUyMCUwOS5vdXQoKQ==  "
},
{
  "sketch_id": "flor_0",
  "code": "JTJGJTJGRmxvciUyMGRlJTIwRnVlZ28lMEElMkYlMkZodHRwcyUzQSUyRiUyRmZsb3JkZWZ1ZWdvLmdpdGh1Yi5pbyUyRiUwQW9zYygzMCUyQzAuMDElMkMxKSUwQS5tdWx0KG9zYygyMCUyQy0wLjElMkMxKS5tb2R1bGF0ZShub2lzZSgzJTJDMSkpLnJvdGF0ZSgwLjcpKSUwQS5wb3N0ZXJpemUoJTVCMyUyQzEwJTJDMiU1RC5mYXN0KDAuNSkuc21vb3RoKDEpKSUwQS5tb2R1bGF0ZVJvdGF0ZShvMCUyQygpJTNEJTNFbW91c2UueCowLjAwMyklMEEub3V0KCk= "
},
{
  "sketch_id": "mahalia_0",
  "code": "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"
},
{
  "sketch_id": "mahalia_1",
  "code": "JTJGJTJGJTIwTWFoYWxpYSUyMEgtUiUwQSUyRiUyRiUyMElHJTNBJTIwJTQwbW1faHJfJTBBJTBBc2hhcGUoKCklMjAlM0QlM0UlMjBNYXRoLnNpbih0aW1lKSUyQjEqMiklMEEucm90YXRlKCgpJTIwJTNEJTNFJTIwTWF0aC5QSSUyMColMjBtb3VzZS54JTIwJTJGMTgwKSUwQS5yZXBlYXRYKDMpJTBBLnJlcGVhdFkoKCklM0QlM0VNYXRoLnNpbih0aW1lKSo1KSUwQS5zY2FsZSgoKSUyMCUzRCUzRSUyME1hdGguUEklMkY0KSUwQS5ibGVuZChzcmMobzApLmNvbG9yKDElMkMwJTJDMCkpJTBBLm1vZHVsYXRlKG9zYygyMCUyQyUyMDAlMkMuNCkpJTBBLmthbGVpZCgyKSUwQSUyMC5vdXQobzApJTBBJTBBcmVuZGVyKG8wKQ=="
},
{
  "sketch_id": "mahalia_2",
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},
{
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  "code": "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"
},
{
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},
{
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  "code": "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"
},
{
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  "code": "JTJGJTJGJTIwMy4zJTBBJTJGJTJGJTIwYnklMjAlQ0UlOTRORFIwTTNEJUNFJTk0JTBBJTJGJTJGJTIwaHR0cHMlM0ElMkYlMkZ3d3cuaW5zdGFncmFtLmNvbSUyRmFuZHJvbTNfZGElMkYlMEElMEFvc2MoKS5tb2R1bGF0ZVJvdGF0ZShvMCUyQzAuMykub3V0KCklMEFvc2MoMzMlMkMwLjMlMkMwLjMpLmRpZmYobzMlMkMzKS5vdXQobzEpJTBBb3NjKDMlMkMwLjMlMkMzMykubW9kdWxhdGVLYWxlaWQobzMlMkMzKS5kaWZmKG8wKS5vdXQobzIpJTBBc3JjKG8wJTJDMykubXVsdChvMSUyQzMpLmthbGVpZCgzKS5vdXQobzMpJTBBcmVuZGVyKG8yKQ=="
},
{
"sketch_id": "asdrubal_0",
 "code": "JTJGJTJGQXNkciVDMyVCQWJhbCUyMEdvbWV6JTBBJTBBbm9pc2UoMyUyQzAuMSUyQzcpJTBBLnJvdGF0ZSgxJTJDLTElMkMtMikubWFzayhzaGFwZSgyMCkpJTBBLmNvbG9yYW1hKDAuNSklMEEubW9kdWxhdGVTY2FsZShvMCklMEEubW9kdWxhdGVTY2FsZShvMCUyQzElMkMpJTBBLmJsZW5kKG8wKSUwQS5ibGVuZChvMCklMEEuYmxlbmQobzApJTBBLmJsZW5kKG8wKSUwQS5vdXQobzApJTBB"
},
{
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"code": "JTJGJTJGSHlkcmElMjBHbGl0Y2h5JTIwU2xpdCUyMFNjYW4lMEElMkYlMkZGbG9yJTIwZGUlMjBGdWVnbyUwQSUyRiUyRmh0dHBzJTNBJTJGJTJGZmxvcmRlZnVlZ28uZ2l0aHViLmlvJTJGJTIwJTBBczAuaW5pdENhbSgpJTBBc3JjKHMwKS5zYXR1cmF0ZSgyKS5jb250cmFzdCgxLjMpLmxheWVyKHNyYyhvMCkubWFzayhzaGFwZSg0JTJDMikuc2NhbGUoMC41JTJDMC43KS5zY3JvbGxYKDAuMjUpKS5zY3JvbGxYKDAuMDAxKSkubW9kdWxhdGUobzAlMkMwLjAwMSkub3V0KG8wKSUwQSUwQQ=="
},
{
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"code": "JTJGJTJGR2xpdGNoJTIwUml2ZXIlMEElMkYlMkZGbG9yJTIwZGUlMjBGdWVnbyUwQSUyRiUyRmh0dHBzJTNBJTJGJTJGZmxvcmRlZnVlZ28uZ2l0aHViLmlvJTJGJTBBdm9yb25vaSg4JTJDMSklMEEubXVsdChvc2MoMTAlMkMwLjElMkMoKSUzRCUzRU1hdGguc2luKHRpbWUpKjMpLnNhdHVyYXRlKDMpLmthbGVpZCgyMDApKSUwQS5tb2R1bGF0ZShvMCUyQzAuNSklMEEuYWRkKG8wJTJDMC44KSUwQS5zY3JvbGxZKC0wLjAxKSUwQS5zY2FsZSgwLjk5KSUwQS5tb2R1bGF0ZSh2b3Jvbm9pKDglMkMxKSUyQzAuMDA4KSUwQS5sdW1hKDAuMyklMEEub3V0KCklMEElMEElMEFzcGVlZCUyMCUzRCUyMDAuMSUwQSUwQSUwQSUwQQ=="
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{
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},
{
"sketch_id": "malitzin_0",
"code": "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"
},
{
"sketch_id": "malitzin_1",
"code": "JTJGJTJGQ05EU0QlMEElMkYlMkZodHRwJTNBJTJGJTJGbWFsaXR6aW5jb3J0ZXMubmV0JTJGJTBBJTJGJTJGYW1lYmElMEElMEFvc2MoMTUlMkMlMjAwLjAxJTJDJTIwMC4xKS5tdWx0KG9zYygxJTJDJTIwLTAuMSkubW9kdWxhdGUob3NjKDIpLnJvdGF0ZSg0JTJDMSklMkMlMjAyMCkpJTBBLmNvbG9yKDAlMkMyLjQlMkM1KSUwQS5zYXR1cmF0ZSgwLjQpJTBBLmx1bWEoMSUyQzAuMSUyQyUyMCg2JTJDJTIwKCklM0QlM0UlMjAxJTIwJTJCJTIwYS5mZnQlNUIzJTVEKSklMEEuc2NhbGUoMC43JTJDJTIwKCklM0QlM0UlMjAwLjclMjAlMkIlMjBhLmZmdCU1QjMlNUQpJTBBLmRpZmYobzApJTJGJTJGJTIwbzAlMEEub3V0KG8wKSUyRiUyRiUyMG8x"
},
{
"sketch_id": "malitzin_2",
"code": "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"
},
{
"sketch_id": "khoparzi_0",
"code": "JTJGJTJGJTIwSGFwcHklMjBNYW5kYWxhJTBBJTJGJTJGJTIwQnklMjBBYmhpbmF5JTIwS2hvcGFyemklMEElMkYlMkYlMjB0d2l0dGVyJTJGZ2l0aHViJTJGaW5zdGFncmFtJTNBJTIwJTQwa2hvcGFyemklMEF2b3Jvbm9pKDUlMkMtMC4xJTJDNSklMEEuYWRkKG9zYygxJTJDMCUyQzEpKS5rYWxlaWQoMjEpJTBBLnNjYWxlKDElMkMxJTJDMikuY29sb3JhbWEoKS5vdXQobzEpJTBBc3JjKG8xKS5tdWx0KHNyYyhzMCkubW9kdWxhdGVSb3RhdGUobzElMkMxMDApJTJDJTIwLTAuNSklMEElMjAlMjAub3V0KG8wKSUwQSUwQQ=="
},
{
"sketch_id": "khoparzi_1",
"code": "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"
},
{
"sketch_id": "khoparzi_2",
"code": "JTJGJTJGJTIwUmVhbGx5JTIwTG92ZSUwQSUyRiUyRiUyMGJ5JTIwQWJoaW5heSUyMEtob3BhcnppJTBBJTJGJTJGJTIwaHR0cCUzQSUyRiUyRmtob3BhcnppLmNvbSUwQW9zYygxMDAlMkMtMC4wMTI0NSUyQzEpLnBpeGVsYXRlKDUwKS5rYWxlaWQoKCklM0QlM0UoTWF0aC5zaW4odGltZSUyRjgpKjklMkIzKSkucm90YXRlKDAlMkMwLjEyNSklMEEubW9kdWxhdGVSb3RhdGUoc2hhcGUoMykuc2NhbGUoKCklM0QlM0UoTWF0aC5jb3ModGltZSkqMikpLnJvdGF0ZSgwJTJDLTAuMjUpKS5kaWZmKHNyYyhvMCkuYnJpZ2h0bmVzcygwLjMpKSUwQSUyMCUyMC5vdXQoKQ=="
},
{
"sketch_id": "khoparzi_3",
"code": "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"
},
{
"sketch_id": "celeste_0",
"code": "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"
},
{
"sketch_id": "celeste_1",
"code": "JTJGJTJGJTIwUHVlcnRhcyUyMElJSSUwQSUyRiUyRiUyMHBvciUyMENlbGVzdGUlMjBCZXRhbmN1ciUwQSUyRiUyRiUyMGh0dHBzJTNBJTJGJTJGZ2l0aHViLmNvbSUyRmVzc3RlYmFuJTBBJTIwJTBBb3NjKDQwJTJDMC4yJTJDMSklMEElMjAlMjAubW9kdWxhdGVTY2FsZShvc2MoNDAlMkMwJTJDMSkua2FsZWlkKDgpKSUwQSUyMCUyMC5yZXBlYXQoMiUyQzQpJTBBJTIwJTIwLm1vZHVsYXRlKG8wJTJDMC4wNSklMEElMjAlMjAubW9kdWxhdGVLYWxlaWQoc2hhcGUoNCUyQzAuMSUyQzEpKSUwQSUyMCUyMC5vdXQobzAp"
},
{
"sketch_id": "celeste_2",
"code": "JTBBJTIwJTJGJTJGJTIwUHVlcnRhcyUwQSUyRiUyRiUyMHBvciUyMENlbGVzdGUlMjBCZXRhbmN1ciUwQSUyRiUyRiUyMGh0dHBzJTNBJTJGJTJGZ2l0aHViLmNvbSUyRmVzc3RlYmFuJTBBJTBBb3NjKDEzJTJDMCUyQzEpJTBBJTIwJTIwLm1vZHVsYXRlKG9zYygyMSUyQzAuMjUlMkMwKSklMEElMjAlMjAubW9kdWxhdGVTY2FsZShvc2MoMzQpKSUwQSUyMCUyMC5tb2R1bGF0ZUthbGVpZChvc2MoNTUpJTJDMC4xJTJDMSklMEElMjAlMjAub3V0KCk="
},
{
"sketch_id": "alexandre_0",
"code": "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"
},
{
"sketch_id": "alexandre_1",
"code": "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"
},
{
"sketch_id": "alexandre_2",
"code": "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"
},{
"sketch_id": "afalfl_0",
"code": "JTJGJTJGZmlsZXQlMjBtaWdub24lMEElMkYlMkYlMjBBRkFMRkwlMEElMkYlMkYlMjBpbnN0YWdyYW0lMkZhX2ZfYWxmbCUyMCUwQSUwQW9zYygxMDAlMkMtMC4wMDE4JTJDMC4xNykuZGlmZihvc2MoMjAlMkMwLjAwMDA4KS5yb3RhdGUoTWF0aC5QSSUyRjAuMDAwMDMpKSUwQS5tb2R1bGF0ZVNjYWxlKG5vaXNlKDEuNSUyQzAuMTgpLm1vZHVsYXRlU2NhbGUob3NjKDEzKS5yb3RhdGUoKCklM0QlM0VNYXRoLnNpbih0aW1lJTJGMjIpKSklMkMzKSUwQS5jb2xvcigxMSUyQzAuNSUyQzAuNCUyQyUyMDAuOSUyQyUyMDAuMiUyQyUyMDAuMDExJTJDJTIwNSUyQyUyMDIyJTJDJTIwJTIwMC41JTJDJTIwLTEpLmNvbnRyYXN0KDEuNCklMEEuYWRkKHNyYyhvMCkubW9kdWxhdGUobzAlMkMuMDQpJTJDLjYlMkMlMjAuOSklMEElMjAlMjAlMkYlMkYucGl4ZWxhdGUoMC40JTJDJTIwMC4yJTJDJTIwMC4xKSUwQS5pbnZlcnQoKS5icmlnaHRuZXNzKDAuMDAwMyUyQyUyMDIpLmNvbnRyYXN0KCUyMDAuNSUyQyUyMDIlMkMlMjAwLjElMkMlMjAyKS5jb2xvcig0JTJDJTIwLTIlMkMlMjAwLjEpJTBBLm1vZHVsYXRlU2NhbGUob3NjKDIpJTJDLTAuMiUyQyUyMDIlMkMlMjAxJTJDJTIwMC4zKSUwQSUyMC5wb3N0ZXJpemUoMjAwKSUyMC5yb3RhdGUoMSUyQyUyMDAuMiUyQyUyMDAuMDElMkMlMjAwLjAwMSklMEElMjAuY29sb3IoMjIlMkMlMjAtMiUyQyUyMDAuNSUyQyUyMDAuNSUyQyUyMDAuMDAwMSUyQyUyMCUyMDAuMSUyQyUyMDAuMiUyQyUyMDgpLmNvbnRyYXN0KDAuMTglMkMlMjAwLjMlMkMlMjAwLjElMkMlMjAwLjIlMkMlMjAwLjAzJTJDJTIwMSklMjAuJTIwYnJpZ2h0bmVzcygwLjAwMDElMkMlMjAtMSUyQyUyMDEwKSUwQSUwOS5vdXQoKQ=="
},
{
"sketch_id": "eerie_ear_0",
"code": "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"
},
{
"sketch_id": "eerie_ear_1",
"code": "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"
},
{
"sketch_id": "eerie_ear_2",
"code": "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"
},
{
"sketch_id": "eerie_ear_3",
"code": "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"
}
]

},{}],27:[function(require,module,exports){
const request = require('superagent')
const examples = require('./examples.json')
const sketches = []


class Gallery {
  constructor (callback) {
    this.sketches = []
    this.examples = []
    this.current = null
    this.code = null
    this.exampleIndex = null

    // request.get('/sketches').end((err, res) => {
    //   console.log('got sketches', res.text, err)
    //   if(err) {
    //     console.log('err getting sketches', err)
    //   } else {
    //     this.sketches = JSON.parse(res.text)
    //   }

      this.examples = examples
      this.setSketchFromURL(callback)
    //  callback(this.code, this.foundSketch)
    // })
    window.addEventListener('popstate', (event) => {
      this.setSketchFromURL(callback)
   // console.log("location: " + document.location + ", state: " + JSON.stringify(event.state));
  });
    this.setRandomSketch = this.setRandomSketch.bind(this)
  }

  clear() {
    this.current = null
    this.code = null
    //this.exampleIndex = null
    let newurl = window.location.protocol + '//' + window.location.host + window.location.pathname
    window.history.pushState({ path: newurl }, '', newurl)
    this.url = newurl
  }

  setSketchFromURL(callback) {
    hush()
    render(o0)
    let searchParams = new URLSearchParams(window.location.search)
    let base64Code = searchParams.get('code')
  //  if(!base64Code) base64Code = searchParams.get('id') // backwards compatibility with earlier form of naming. id is now called code
    let sketch_id = searchParams.get('sketch_id')
    let code = ''
    //console.log("id", sketch_id, "code", base64Code)

    // boolean to determine whether a sketch was found based on the URL, either through looking through the database or rendering the code
    this.foundSketch = false
    // if contains a sketch id, set sketch from id
    if(sketch_id) {
      var sketch = this.getExampleById(sketch_id)
      if(sketch) {
       // console.log('found', sketch)
          this.setSketch(sketch)
          callback(this.code, false)
      } else {
        request
          .get('/sketchById')
          .query({sketch_id: sketch_id})
          .end((err, res) => {
           // console.log('got sketches', res.text, err)
            if(err) {
              console.log('err getting sketches', err)
              this.setSketchFromCode(base64Code, callback)
            } else {
              this.sketches = JSON.parse(res.text)
              if(this.sketches.length > 0) {
                this.setSketch(this.sketches[0])
                //this.code = this.decodeBase64(this.sketches[0].code)
                this.foundSketch = true
                callback(this.code, this.foundSketch)
              } else {
                this.setSketchFromCode(base64Code, callback)
              }
            }
          })
        }

      } else {
        this.setSketchFromCode(base64Code, callback)
      }
    //
    //   // console.log('found ', sketch)
    //   // if(sketch) {
    //   //   this.setSketch(sketch)
    //   //   this. = true0
    //   // } else if (base64Code){
    //   //   this.code = this.decodeBase64(base64Code)
    //   //   this.foundSketch = true
    //   // } else {
    //   //   console.log('id not found', sketch_id)
    //   //   this.setRandomSketch()
    //   // }
    //
    // // // backwards combaitbility with earlier shareable URLS
    // } else {
    //
    //   if (base64Code) {
    //     this.code = this.decodeBase64(base64Code)
    //     this.foundSketch = true
    //   } else {
    //     this.setRandomSketch()
    //   }
    // }
  }

  setSketchFromCode(base64Code, callback){
    if (base64Code) {
      this.code = this.decodeBase64(base64Code)
      this.foundSketch = true
    } else {
      this.setRandomSketch()
    }
    callback(this.code, this.foundSketch)
  }

  saveImage() {

  }

  setToURL(params){
    //       console.log(base64)
   // console.log('params', params)
    // keep code in url for backwards compatibility / compatibility between local and public versions
    var url_params
    if(params.sketch_id) {
       url_params = `sketch_id=${params.sketch_id}`
    } else {
      url_params = `sketch_id=${params.sketch_id}&code=${params.code}`
    }
    // } else {
    //   url_params = params.map( (param, index) => `${param.label}=${param.value}`).join('&')
    // }
  //  console.log('url params', url_params)
    let newurl = window.location.protocol + '//' +
    window.location.host + window.location.pathname + '?' + url_params
  //  window.location.href = newurl

    window.history.replaceState({ path: newurl }, '', newurl)
    this.url = newurl
  }

  encodeBase64(text) {
    return btoa(encodeURIComponent(text))
  }
  decodeBase64(base64Code) {
    return decodeURIComponent(atob(base64Code))
  }

  setSketch(sketch) {
    this.code = this.decodeBase64(sketch.code)
    this.current = sketch
  //  this.setToURL('sketch_id', sketch._id)
    // let params = Object.keys(sketch).map( (key) => {
    //   return {label: key, value: sketch[key]}
    // })
    this.setToURL(sketch)
  }

  setRandomSketch() {
    // if there are sketches, set code from sketch, otherwise generate random
    //console.log("examples length", this.examples, this.exampleIndex)
    if(this.examples.length > 0) {
      let index
      // if(this.exampleIndex === null) {
        index = Math.floor(Math.random() * this.examples.length)
        while (index === this.exampleIndex) {
          index = Math.floor(Math.random() * this.examples.length)
        }
      // } else {
      //   index = this.exampleIndex +1
      //   if(index >= this.examples.length) index = 0
      // }
      this.exampleIndex = index
    //  console.log('example is', this.examples[rand])
      this.setSketch(this.examples[index])
    } else {
      var startString = 'osc(' + 2 + Math.floor(Math.pow(10, Math.random() * 2)) + ')'
      startString += '.color(' + Math.random().toFixed(2) + ',' + Math.random().toFixed(2) + ',' + Math.random().toFixed(2)+ ')'
      startString += '.rotate(' + Math.random().toFixed(2) + ')'
      startString += '.out(o0)'
      this.code = startString
    }
  }

  // shares via twitter
  shareSketch(code, hydra, name) {
    this.saveSketch(code, () => {
      console.log("URL is", this.url, 'sketch is', this.current)
      hydra.getScreenImage((img) => {
        request
          .post('/image')
          .attach('previewImage', img)
          .query({
            url: this.url,
            sketch_id: this.current.sketch_id,
            name: name
          })
          // .send({
          //   code: base64
          // })
        //  .query(query)
          .end((err, res) => {
            if(err) {
              console.log('error postingimage', err)
            } else {
              console.log('image response', res.text)
            //  self.setToURL([ { label: 'sketch_id', value: res.text}, {label: 'code', value: base64} ])

            }
          })
        // var oReq = new XMLHttpRequest();
        // oReq.open("POST", "https://localhost:8000/image", true);
        // oReq.onload = function (oEvent) {
        //   // Uploaded.
        //   console.log("uploaded", oEvent)
        // };
        // oReq.send(img);
      //  console.log('got image', img)
      })
    })
  }

  saveSketch(code, callback) {
    let self = this
    //console.log('saving in gallery', code)
    let base64 = this.encodeBase64(code)
  //  console.log('code is', base64)

    let query = {
      code: base64,
      parent: this.current ? this.current.sketch_id : null
    }

    console.log('saving in gallery', query)
    request
      .post('/sketch')
      // .send({
      //   code: base64
      // })
      .query(query)
      .end((err, res) => {
        if(err) {
          console.log('error posting sketch', err)
          if(callback) callback(err)
        } else {
          console.log('response', res.text)
        //  self.setToURL([ { label: 'sketch_id', value: res.text}, {label: 'code', value: base64} ])
          self.setSketch({
            sketch_id: res.text,
            code: base64
          })
          if(callback) callback(null)
        }
      })
  }

  saveLocally(code) {
    let base64 = this.encodeBase64(code)

    // keep code in url for backwards compatibility / compatibility between local and public versions
    var url_params = `code=${base64}`
    // } else {
    //   url_params = params.map( (param, index) => `${param.label}=${param.value}`).join('&')
    // }
    //console.log('url params', url_params)
    let newurl = window.location.protocol + '//' +
    window.location.host + window.location.pathname + '?' + url_params
    window.history.pushState({ path: newurl }, '', newurl)
    this.url = newurl
  }

  getExampleById(id) {
    //console.log('looking for', id, this.examples, this.sketches)
    var sketches =  this.examples.filter((sketch) => sketch.sketch_id === id)
    if(sketches.length <= 0) sketches = this.sketches.filter((sketch) => sketch.sketch_id === id)
    return sketches[0]
  }
}

module.exports = Gallery

},{"./examples.json":26,"superagent":170}],28:[function(require,module,exports){
const repl = require('./repl.js')
const beautify_js = require('js-beautify').js_beautify

// const prettier = require("prettier/standalone")
// const parserBabel = require("prettier/parser-babel");

class Menu {
  constructor (obj) {
    this.sketches = obj.sketches
    this.editor = obj.editor
    this.hydra = obj.hydra

    // variables related to popup window
    this.closeButton = document.getElementById("close-icon")
    this.clearButton =  document.getElementById("clear-icon")
    this.shareButton =  document.getElementById("share-icon")
    this.shuffleButton = document.getElementById("shuffle-icon")
    this.mutatorButton = document.getElementById("mutator-icon")
    this.runButton = document.getElementById("run-icon")
    this.editorText = document.getElementsByClassName('CodeMirror-scroll')[0]

    this.runButton.onclick = this.runAll.bind(this)
    this.shuffleButton.onclick = this.shuffleSketches.bind(this)
    this.shareButton.onclick = this.shareSketch.bind(this)
    this.clearButton.onclick = this.clearAll.bind(this)
    this.closeButton.onclick = () => {
      if(!this.isClosed) {
        this.closeModal()
      } else {
        this.openModal()
      }
    }

	   this.mutatorButton.onclick = this.mutateSketch.bind(this);
    this.isClosed = false
    this.closeModal()
  }

  runAll() {
    repl.eval(this.editor.getValue(), (string, err) => {
    //  console.log('eval', err)
     this.editor.flashCode()
      if(!err) this.sketches.saveLocally(this.editor.getValue())
    })
  }

  shuffleSketches() {
    this.clearAll()
    this.sketches.setRandomSketch()
    this.editor.setValue(this.sketches.code)
    repl.eval(this.editor.getValue())
  }

  formatCode() {
    // this.editor.setValue(prettier.format(this.editor.getValue(), {
    //   parser: "babel",
    //   plugins: [parserBabel],
    //   printWidth: 85,
    //   semi: false,
    //   useTabs: true,
    //   arrowParens: "avoid"
    // }))
    const formatted = beautify_js(this.editor.getValue(), { indent_size: 2, "break_chained_methods": true, "indent_with_tabs": true})
    this.editor.setValue(formatted)
  }

  shareSketch() {
      repl.eval(this.editor.getValue(), (code, error) => {
      //  console.log('evaluated', code, error)
        if(!error){
          this.showConfirmation( (name) => {
            this.sketches.shareSketch(this.editor.getValue(), this.hydra, name)
          }, () => this.hideConfirmation() )
        } else {
          console.warn(error)
        }
      })
  }

  showConfirmation(successCallback, terminateCallback) {
    var c = prompt("Pressing OK will share this sketch to \nhttps://twitter.com/hydra_patterns.\n\nInclude your name or twitter handle (optional):")
  //  console.log('confirm value', c)
    if (c !== null) {
      successCallback(c)
    } else {
      terminateCallback()
    }
  }

  hideConfirmation() {

  }

  clearAll() {
    hush()
    speed = 1
    this.sketches.clear()
    this.editor.clear()
    //@todo: add clear/reset function to hydra
  }

  closeModal () {
    document.getElementById("info-container").className = "hidden"
    this.closeButton.className = "fas fa-question-circle icon"
    this.shareButton.classList.remove('hidden')
    this.clearButton.classList.remove('hidden')
    this.mutatorButton.classList.remove('hidden');
    this.runButton.classList.remove('hidden');
    this.editorText.style.opacity = 1
    this.isClosed = true
  }

  openModal () {
    document.getElementById("info-container").className = ""
    this.closeButton.className = "fas fa-times icon"
    this.shareButton.classList.add('hidden')
    this.clearButton.classList.add('hidden')
    this.mutatorButton.classList.add('hidden');
    this.runButton.classList.add('hidden');
    this.editorText.style.opacity = 0.0
    this.isClosed = false
  }

  mutateSketch(evt) {
  	if (evt.shiftKey) {
      this.editor.mutator.doUndo();
  	} else {
      this.editor.mutator.mutate({reroll: false, changeTransform: evt.metaKey});
      this.formatCode();
      this.sketches.saveLocally(this.editor.getValue())
    }
  }
}

module.exports = Menu

},{"./repl.js":34,"js-beautify":86}],29:[function(require,module,exports){
//'use babel'

// const p5lib = require('p5')

class P5 extends p5{
  constructor ({
    width = window.innerWidth,
    height = window.innerHeight,
    mode = 'P2D'
  } = {}) {
    //console.log('createing canvas', width, height, window.innerWidth, window.innerHeight)
    super(( p ) => {
      p.setup = () => { p.createCanvas(width, height, p[mode]) }
  //    p.setup = () => { p.createCanvas() }
      p.draw = () => { }
    }, 'hydra-ui')
    this.width = width
    this.height = height
    this.mode = mode
    this.canvas.style.position = "absolute"
    this.canvas.style.top = "0px"
    this.canvas.style.left = "0px"
    this.canvas.style.zIndex = -1
    // console.log('p5', this)
  //  return this.p5
  }

  show() {
    this.canvas.style.visibility = "visible"
  }

  hide() {
    this.canvas.style.visibility = "hidden"
  }

  // p5 clear function not covering canvas
  clear() {
    this.drawingContext.clearRect(0, 0, this.canvas.width, this.canvas.height)
  }
}

module.exports = P5

},{}],30:[function(require,module,exports){
/* globals sessionStorage */
// Extends rtc-patch-bay to include support for nicknames and persistent session storage

var PatchBay = require('./rtc-patch-bay.js')
//var PatchBay = require('./../../../../rtc-patch-bay')
var inherits = require('inherits')

var PBLive = function () {
  this.session = {}

  // lookup tables for converting id to nickname
  this.nickFromId = {}
  this.idFromNick = {}

  this.loadFromStorage()
}
// inherits from PatchBay module
inherits(PBLive, PatchBay)

PBLive.prototype.init = function (stream, opts) {
  this.settings = {
    server: opts.server || 'https://patch-bay.glitch.me/',
    room: opts.room || 'patch-bay',
    stream: stream
  }

  this.makeGlobal = opts.makeGlobal || true
  this.setPageTitle = opts.setTitle || true

  if (this.session.id) this.settings.id = this.session.id

  PatchBay.call(this, this.settings)

  if (this.makeGlobal) window.pb = this

  this.on('ready', () => {
    if (!this.nick) {
      if (this.session.nick) {
        this.setName(this.session.nick)
      } else {
        this.session.id = this.id
        this.setName(this.session.id)
      }
    }
    console.log('connected to server ' + this.settings.server + ' with name ' + this.settings.id)
  })
  // received a broadcast
  this.on('broadcast', this._processBroadcast.bind(this))
  this.on('new peer', this.handleNewPeer.bind(this))

  window.onbeforeunload = () => {
    this.session.id = window.pb.id
    this.session.nick = this.nick
    sessionStorage.setItem('pb', JSON.stringify(this.session))
  }

  var self = this
  this.on('stream', function (id, stream) {
    console.log('got stream!', id, stream)
    const video = document.createElement('video')
    if ('srcObject' in video) {
      video.srcObject = stream
    } else {
      // Avoid using this in new browsers, as it is going away.
      video.src = window.URL.createObjectURL(stream)
    }
  //  video.src = window.URL.createObjectURL(stream)
    video.addEventListener('loadedmetadata', () => {
      //  console.log("loaded meta22")
      video.play()
      self.video = video
      self.emit('got video', self.nickFromId[id], video)
    })
  })
}

PBLive.prototype.loadFromStorage = function () {
  if (sessionStorage.getItem('pb') !== null) {
    this.session = JSON.parse(sessionStorage.getItem('pb'))
  }
}

PBLive.prototype.initSource = function (nick, callback) {
  this.initConnectionFromId(this.idFromNick[nick], callback)
//  this.peers[this.idFromNick[nick]].streamCallback = callback
}

// default nickname is just peer id.
// to do: save nickname information between sessions
PBLive.prototype.handleNewPeer = function (peer) {
  // console.log("new peer", peer)
  this.nickFromId[peer] = peer
  this.idFromNick[peer] = peer
  // console.log("THIS IS THE PEER", peer)
  // to do: only send to new peer, not to all
  if (this.nick) {
    this.broadcast({
      type: 'update-nick',
      id: this.id,
      nick: this.nick
    })
  }
}

PBLive.prototype.list = function () {
  var l = Object.keys(this.idFromNick)
  //console.log(l)
  return Object.keys(this.idFromNick)
}

// choose an identifying name
PBLive.prototype.setName = function (nick) {
  this.broadcast({
    type: 'update-nick',
    id: this.id,
    nick: nick,
    previous: this.nick
  })
  this.nick = nick
  if (this.setPageTitle) document.title = nick
}

PBLive.prototype._processBroadcast = function (data) {
  if (data.type === 'update-nick') {
    if (data.previous !== data.nick) {
      delete this.idFromNick[this.nickFromId[data.id]]
      this.nickFromId[data.id] = data.nick
      this.idFromNick[data.nick] = data.id
      if (data.previous) {
        //console.log(data.previous + ' changed to ' + data.nick)
      } else {
        //console.log('connected to ' + data.nick)
      }
    }
  }
}
// PBExtended.prototype.
module.exports = PBLive

},{"./rtc-patch-bay.js":31,"inherits":85}],31:[function(require,module,exports){
// Module for handling connections to multiple peers.


var io = require('socket.io-client')
var SimplePeer = require('simple-peer')
var extend = Object.assign
var events = require('events').EventEmitter
var inherits = require('inherits')
const shortid = require('shortid')

var PatchBay = function (options) {
// connect to websocket signalling server. To DO: error validation
  this.signaller = io(options.server)

  //assign unique id to this peer, or use id passed in

  this.id = options.id || shortid.generate()

  this.stream = options.stream || null

  //options to be sent to simple peer
  this._peerOptions = options.peerOptions || {}
  this._room = options.room


  this.settings['shareMediaWhenRequested'] = true
  this.settings['shareMediaWhenInitiating'] = false
  this.settings['requestMediaWhenInitiating'] = true
  this.settings['autoconnect'] = false

  //object containing ALL peers in room
  this.peers = {}

  //object containing peers connected via webrtc
  this.rtcPeers = {}

  // Handle events from signalling server
  this.signaller.on('ready', this._readyForSignalling.bind(this))
//  this.signaller.on('peers', )
//  this.signaller.on('signal', this._handleSignal.bind(this))
  this.signaller.on('message', this._handleMessage.bind(this))
  // Received message via websockets to all peers in room
  this.signaller.on('broadcast', this._receivedBroadcast.bind(this))

  // emit 'join' event to signalling server
  this.signaller.emit('join', this._room, {uuid: this.id})

  this.signaller.on('new peer', this._newPeer.bind(this))
}
// inherits from events module in order to trigger events
inherits(PatchBay, events)

// send data to all connected peers via data channels
PatchBay.prototype.sendToAll = function (data) {
  Object.keys(this.rtcPeers).forEach(function (id) {
    this.rtcPeers[id].send(data)
  }, this)
}

// sends to peer specified b
PatchBay.prototype.sendToPeer = function (peerId, data) {
  if (peerId in this.rtcPeers) {
    this.rtcPeers[peerId].send(data)
  }
}

PatchBay.prototype.reinitAll = function(){
  Object.keys(this.rtcPeers).forEach(function (id) {
    this.reinitPeer(id)
  }.bind(this))
//  this._connectToPeers.bind(this)
}

PatchBay.prototype.initRtcPeer = function(id, opts) {
  this.emit('new peer', {id: id})
  var newOptions = opts
 // console.log()
  if(this.iceServers) {
    opts['config'] = {
      iceServers: this.iceServers
    }
  }

  if(opts.initiator === true) {
    if (this.stream != null) {
      if(this.settings.shareMediaWhenInitiating === true){
        newOptions.stream = this.stream
      }
    }
    if(this.settings.requestMediaWhenInitiating === true){
      newOptions.offerConstraints = {
        offerToReceiveVideo: true,
        offerToReceiveAudio: true
      }
    }
  } else {
    if(this.settings.shareMediaWhenRequested === true){
      if (this.stream != null) {
        newOptions.stream = this.stream
      }
    }
  }
  var options = extend(this._peerOptions, newOptions)
//console.log("OPTIONS", options)
  this.rtcPeers[id] = new SimplePeer(options)
  this._attachPeerEvents(this.rtcPeers[id], id)
}

PatchBay.prototype.reinitRtcConnection = function(id, opts){
  // Because renegotiation is not implemeneted in SimplePeer, reinitiate connection when configuration has changed
  this.rtcPeers[id]._destroy(null, function(e){
      this.initRtcPeer(id, {
        stream: this.stream,
        initiator: true
      })
  }.bind(this))
}
// //new peer connected to signalling server
PatchBay.prototype._newPeer = function (peer){
    // this.connectedIds.push(peer)


    // Configuration for specified peer.
    // Individual configuration controls whether will receive media from
    // and/or send media to a specific peer.

    this.peers[peer] = {
      rtcPeer: null
    }

    this.emit('new peer', peer)
    // this.emit('updated peer list', this.connectedIds)
}
// // Once the new peer receives a list of connected peers from the server,
// // creates new simple peer object for each connected peer.
PatchBay.prototype._readyForSignalling = function ({ peers, servers }) {
//  console.log("received peer list", _t, this.peers)

  peers.forEach((peer) => {
    this._newPeer(peer)
  })

  // if received ice and turn server information from signalling server, use in establishing
  if(servers) {
    this.iceServers = servers
  }
//  this.peers = peers
  this.emit('ready')
}

// Init connection to RECEIVE video
PatchBay.prototype.initConnectionFromId = function(id, callback){
//  console.log("initianing connection")
  if(id in this.rtcPeers){
    console.log("Already connected to..", id, this.rtcPeers)
    //if this peer was originally only sending a stream (not receiving), recreate connecting but this time two-way
    if(this.rtcPeers[id].initiator===false){
      this.reinitRtcConnection(id)
    } else {
      //already connected, do nothing

    }
  } else {
    this.initRtcPeer(id, {
      initiator: true
    })
  }
}


// receive signal from signalling server, forward to simple-peer
PatchBay.prototype._handleMessage = function (data) {
  // if there is currently no peer object for a peer id, that peer is initiating a new connection.

  if (data.type === 'signal'){
    this._handleSignal(data)
  } else {
    this.emit('message', data)
  }
}
// receive signal from signalling server, forward to simple-peer
PatchBay.prototype._handleSignal = function (data) {
  // if there is currently no peer object for a peer id, that peer is initiating a new connection.
  if (!this.rtcPeers[data.id]) {
    // this.emit('new peer', data)
    // var options = extend({stream: this.stream}, this._peerOptions)
    // this.rtcPeers[data.id] = new SimplePeer(options)
    // this._attachPeerEvents(this.rtcPeers[data.id], data.id)

    this.initRtcPeer(data.id, {initiator: false})
  }
  this.rtcPeers[data.id].signal(data.message)
}
// sendToAll send through rtc connections, whereas broadcast
// send through the signalling server. Useful in cases where
// not all peers are connected via webrtc with other peers
PatchBay.prototype._receivedBroadcast = function(data) {
  //console.log("RECEIVED BROADCAST", data)
  this.emit('broadcast', data)
}

//sends via signalling server
PatchBay.prototype.broadcast = function (data) {
  this.signaller.emit('broadcast', data)
}
// handle events for each connected peer
PatchBay.prototype._attachPeerEvents = function (p, _id) {
  p.on('signal', function (id, signal) {
  //  console.log('signal', id, signal)
    //  console.log("peer signal sending over sockets", id, signal)
  //  this.signaller.emit('signal', {id: id, signal: signal})
    this.signaller.emit('message', {id: id, message: signal, type: 'signal'})
  }.bind(this, _id))

  p.on('stream', function (id, stream) {
    this.rtcPeers[id].stream = stream
  //  console.log('E: stream', id, stream)
    //  console.log("received a stream", stream)
    this.emit('stream', id, stream)
  }.bind(this, _id))

  p.on('connect', function (id) {
  //  console.log("connected to ", id)
    this.emit('connect', id)
  }.bind(this, _id))

  p.on('data', function (id, data) {
//    console.log('data', id)
    this.emit('data', {id: id, data: JSON.parse(data)})
  }.bind(this, _id))

  p.on('close', function (id) {
    //console.log('CLOSED')
    delete (this.rtcPeers[id])
    this.emit('close', id)
  }.bind(this, _id))

  p.on('error', function(e){
    console.warn("simple peer error", e)
  })
}

PatchBay.prototype._destroy = function () {
  Object.values(this.rtcPeers).forEach( function (peer) {
    peer.destroy()
  })
  this.signaller.close()
}


module.exports = PatchBay

},{"events":74,"inherits":85,"shortid":134,"simple-peer":144,"socket.io-client":160}],32:[function(require,module,exports){
const {Parser} = require("acorn");
const {generate} = require('astring');
const { defaultTraveler, attachComments, makeTraveler } = require('astravel');
const {UndoStack} = require('./UndoStack.js');
const repl = require('../repl.js')
const glslTransforms = require('hydra-synth/src/glsl/glsl-functions.js')()

class Mutator {

  constructor(editor) {
    this.editor = editor;
    this.undoStack = new UndoStack();

    this.initialVector = [];

    this.funcTab = {};
    this.transMap = {};
		this.scanFuncs();
		this.dumpDict();
  }

  dumpList() {
  	let gslTab = glslTransforms;
  	gslTab.forEach (v => {
  		var argList = "";
  		v.inputs.forEach((a) => {
  			if (argList != "") argList += ", ";
  			let argL = a.name + ": " + a.type + " {" + a.default + "}";
  			argList = argList + argL;
  		});
  	//	console.log(v.name + " [" + v.type + "] ("+ argList + ")");
  	});
  }

  scanFuncs() {
  	let gslTab = glslTransforms;
  	gslTab.forEach (f => {
  		this.transMap[f.name] = f;
  		if (this.funcTab[f.type] === undefined) {this.funcTab[f.type] = []}
			this.funcTab[f.type].push(f);
  	});
  }

	dumpDict() {
		for(let tn in this.funcTab)
		{
			this.funcTab[tn].forEach(f => {
  		var argList = "";
  		f.inputs.forEach((a) => {
  			if (argList != "") argList += ", ";
  			let argL = a.name + ": " + a.type + " {" + a.default + "}";
  			argList = argList + argL;
  		});
  		//console.log(f.name + " [" + f.type + "] ("+ argList + ")");
			});
    }
	}

  mutate(options) {
    // Get text from CodeMirror.
    let text = this.editor.cm.getValue();
    this.undoStack.push({text, lastLitX: this.lastLitX});
    let needToRun = true;
    let tryCounter = 5;
    while (needToRun && tryCounter-- >= 0) {
        // Parse to AST
        var comments = [];
        let ast = Parser.parse(text, {
            locations: true,
            onComment: comments}
        );

        // Modify the AST.
        this.transform(ast, options);

        // Put the comments back.
        attachComments(ast, comments);

        // Generate JS from AST and set back into CodeMirror editor.
        let regen = generate(ast, {comments: true});

        this.editor.cm.setValue(regen);
				try {
        // Evaluate the updated expression.
        repl.eval(regen, (code, error) => {
            // If we got an error, keep trying something else.
            if (error) {
                console.log("Eval error: " + regen);
            }
            needToRun = error;
        });
      } catch (err) {
      	console.log("Exception caught: " + err);
      	needToRun = err;
      }
     }
  }

  doUndo() {
    // If the current text is unsaved, save it so we can redo if need be.
    if (this.undoStack.atTop()) {
        let text = this.editor.cm.getValue();
        this.undoStack.push({text, lastLitX: this.lastLitX});
    }
    // Then pop-off the info to restore.
    if (this.undoStack.canUndo()) {
        let {text, lastLitX} = this.undoStack.undo();
        this.setText(text);
        this.lastLitX = lastLitX;
    }
  }

  doRedo() {
    if(this.undoStack.canRedo()) {
        let {text, lastLitX} = this.undoStack.redo();
        this.setText(text);
        this.lastLitX = lastLitX;
    }
  }

  setText(text) {
    this.editor.cm.setValue(text);
    repl.eval(text, (code, error) => {
    });

    }

  // The options object contains a flag that controls how the
  // Literal to mutate is determined. If reroll is false, we
  // pick one at random. If reroll is true, we use the same field
  // we did last time.
  transform(ast, options) {
    // An AST traveler that accumulates a list of Literal nodes.
    let traveler = makeTraveler({
  go: function(node, state) {
        if (node.type === 'Literal') {
            state.literalTab.push(node);
        } else if (node.type === 'MemberExpression') {
            if (node.property && node.property.type === 'Literal') {
                // numeric array subscripts are ineligable
                return;
            }
        } else if (node.type === 'CallExpression') {
            if (node.callee && node.callee.property && node.callee.property.name && node.callee.property.name !== 'out') {
                state.functionTab.push(node);
            }
        }
        // Call the parent's `go` method
        this.super.go.call(this, node, state);
      }
    });

    let state = {};
    state.literalTab = [];
    state.functionTab = [];

    traveler.go(ast, state);

    this.litCount = state.literalTab.length;
    this.funCount = state.functionTab.length;
    if (this.litCount !== this.initialVector.length) {
        let nextVect = [];
        for(let i = 0; i < this.litCount; ++i) {
            nextVect.push(state.literalTab[i].value);
        }
        this.initialVector = nextVect;
    }
    if (options.changeTransform) {
    	this.glitchTrans(state, options);
    }
    else this.glitchLiteral(state, options);

}

	glitchLiteral(state, options)
	{
		let litx = 0;
    if (options.reroll) {
        if (this.lastLitX !== undefined) {
            litx = this.lastLitX;
        }
    } else {
        litx = Math.floor(Math.random() * this.litCount);
        this.lastLitX = litx;
    }

    let modLit = state.literalTab[litx];
    if (modLit) {
        // let glitched = this.glitchNumber(modLit.value);
        let glitched = this.glitchRelToInit(modLit.value, this.initialVector[litx]);
        let was = modLit.raw;
        modLit.value = glitched;
        modLit.raw = "" + glitched;
        console.log("Literal: " + litx + " changed from: " + was + " to: " + glitched);
    }
	}

  glitchNumber(num) {
    if (num === 0) {
        num = 1;
    }
    let range = num * 2;
    let rndVal = Math.round(Math.random() * range * 1000) / 1000;
    return rndVal;
  }

  glitchRelToInit(num, initVal) {
    if (initVal === undefined) {
        return glitchNumber(num);
    } if (initVal === 0) {
        initVal = 0.5;
    }

    let rndVal = Math.round(Math.random() * initVal * 2 * 1000) / 1000;
    return rndVal;
}
	glitchTrans(state, options)
	{
/*
		state.functionTab.forEach((f)=>{
			console.log(f.callee.property.name);
		});
*/
		let funx = Math.floor(Math.random() * this.funCount);
		if (state.functionTab[funx] === undefined || state.functionTab[funx].callee === undefined || state.functionTab[funx].callee.property === undefined) {
				  	console.log("No valid functionTab for index: " + funx);
	  				return;
		}
		let oldName = state.functionTab[funx].callee.property.name;

	  if (oldName == undefined) {
	  	console.log("No name for callee");
	  	return;
	  }
		let ftype = this.transMap[oldName].type;
		if (ftype == undefined) {
			console.log("ftype undefined for: " + oldName);
			return;
		}
		let others = this.funcTab[ftype];
		if (others == undefined) {
			console.log("no funcTab entry for: " + ftype);
			return;
		}
		let changeX = Math.floor(Math.random() * others.length);
		let become = others[changeX].name;

		// check blacklisted combinations.
		if (oldName === "modulate" && become === "modulateScrollX")
		{
			console.log("Function: " + funx + " changing from: " + oldName + " can't change to: " + become);
			return;
		}

		state.functionTab[funx].callee.property.name = become;
    console.log("Function: " + funx + " changed from: " + oldName + " to: " + become);
	}

} //  End of class Mutator.

module.exports = Mutator

},{"../repl.js":34,"./UndoStack.js":33,"acorn":36,"astravel":37,"astring":40,"hydra-synth/src/glsl/glsl-functions.js":9}],33:[function(require,module,exports){
// A generalized 'Undo stack' which can keep N levels of revertable state.
class UndoStack {
    constructor(limit) {
        this.stack = [];
        this.index = -1;
        this.limit = limit;
    }
    
    atTop() {
        return this.index === -1;
    }

    canUndo() {
        if(this.stack.length === 0) return false;
        return this.index === -1 || this.index > 0;
    }

    canRedo() {
        if(this.stack.length === 0 || this.index === -1) return false;
        return this.index < this.stack.length - 1;
    }

    push(item) {
        if (this.index >= 0) {
            while (this.index < this.stack.length) this.stack.pop();
            this.index = -1;
        }
        if (this.limit && this.stack.length > this.limit) {
            this.stack.shift();
        }
        this.stack.push(item);
    }

    undo() {
        if (this.stack.length === 0) return undefined;
        if (this.index === -1) { // start one behind the redo buffer
            this.index = this.stack.length - 1;
        }
        if (this.index > 0) this.index--;
        let v = this.stack[this.index];
        return v;
    }

    redo() {
        if (this.stack.length === 0 || this.index === -1) return undefined;
        let nextX = this.index + 1;
        if (nextX >= this.stack.length) return undefined;
        this.index = nextX;
        return this.stack[this.index];
    }
};


module.exports = {UndoStack}
},{}],34:[function(require,module,exports){
const log = require('./editor/log.js').log

module.exports = {
  eval: (arg, callback) => {
    var self = this

    // wrap everything in an async function
  var jsString = `(async() => {
    ${arg}
})().catch(${(err) => log(err.message, "log-error")})`
    var isError = false
    try {
      eval(jsString)
      // log(jsString)
      log('')
    } catch (e) {
      isError = true
      console.log("logging", e)
      // var err = e.constructor('Error in Evaled Script: ' + e.message);
      // console.log(err.lineNumber)
      log(e.message, "log-error")
      //console.log('ERROR', JSON.stringify(e))
    }
  //  console.log('callback is', callback)
    if(callback) callback(jsString, isError)
  }
}

},{"./editor/log.js":25}],35:[function(require,module,exports){

/**
 * Expose `Emitter`.
 */

exports.Emitter = Emitter;

/**
 * Initialize a new `Emitter`.
 *
 * @api public
 */

function Emitter(obj) {
  if (obj) return mixin(obj);
}

/**
 * Mixin the emitter properties.
 *
 * @param {Object} obj
 * @return {Object}
 * @api private
 */

function mixin(obj) {
  for (var key in Emitter.prototype) {
    obj[key] = Emitter.prototype[key];
  }
  return obj;
}

/**
 * Listen on the given `event` with `fn`.
 *
 * @param {String} event
 * @param {Function} fn
 * @return {Emitter}
 * @api public
 */

Emitter.prototype.on =
Emitter.prototype.addEventListener = function(event, fn){
  this._callbacks = this._callbacks || {};
  (this._callbacks['$' + event] = this._callbacks['$' + event] || [])
    .push(fn);
  return this;
};

/**
 * Adds an `event` listener that will be invoked a single
 * time then automatically removed.
 *
 * @param {String} event
 * @param {Function} fn
 * @return {Emitter}
 * @api public
 */

Emitter.prototype.once = function(event, fn){
  function on() {
    this.off(event, on);
    fn.apply(this, arguments);
  }

  on.fn = fn;
  this.on(event, on);
  return this;
};

/**
 * Remove the given callback for `event` or all
 * registered callbacks.
 *
 * @param {String} event
 * @param {Function} fn
 * @return {Emitter}
 * @api public
 */

Emitter.prototype.off =
Emitter.prototype.removeListener =
Emitter.prototype.removeAllListeners =
Emitter.prototype.removeEventListener = function(event, fn){
  this._callbacks = this._callbacks || {};

  // all
  if (0 == arguments.length) {
    this._callbacks = {};
    return this;
  }

  // specific event
  var callbacks = this._callbacks['$' + event];
  if (!callbacks) return this;

  // remove all handlers
  if (1 == arguments.length) {
    delete this._callbacks['$' + event];
    return this;
  }

  // remove specific handler
  var cb;
  for (var i = 0; i < callbacks.length; i++) {
    cb = callbacks[i];
    if (cb === fn || cb.fn === fn) {
      callbacks.splice(i, 1);
      break;
    }
  }

  // Remove event specific arrays for event types that no
  // one is subscribed for to avoid memory leak.
  if (callbacks.length === 0) {
    delete this._callbacks['$' + event];
  }

  return this;
};

/**
 * Emit `event` with the given args.
 *
 * @param {String} event
 * @param {Mixed} ...
 * @return {Emitter}
 */

Emitter.prototype.emit = function(event){
  this._callbacks = this._callbacks || {};

  var args = new Array(arguments.length - 1)
    , callbacks = this._callbacks['$' + event];

  for (var i = 1; i < arguments.length; i++) {
    args[i - 1] = arguments[i];
  }

  if (callbacks) {
    callbacks = callbacks.slice(0);
    for (var i = 0, len = callbacks.length; i < len; ++i) {
      callbacks[i].apply(this, args);
    }
  }

  return this;
};

// alias used for reserved events (protected method)
Emitter.prototype.emitReserved = Emitter.prototype.emit;

/**
 * Return array of callbacks for `event`.
 *
 * @param {String} event
 * @return {Array}
 * @api public
 */

Emitter.prototype.listeners = function(event){
  this._callbacks = this._callbacks || {};
  return this._callbacks['$' + event] || [];
};

/**
 * Check if this emitter has `event` handlers.
 *
 * @param {String} event
 * @return {Boolean}
 * @api public
 */

Emitter.prototype.hasListeners = function(event){
  return !! this.listeners(event).length;
};

},{}],36:[function(require,module,exports){
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
  typeof define === 'function' && define.amd ? define(['exports'], factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.acorn = {}));
})(this, (function (exports) { 'use strict';

  // Reserved word lists for various dialects of the language

  var reservedWords = {
    3: "abstract boolean byte char class double enum export extends final float goto implements import int interface long native package private protected public short static super synchronized throws transient volatile",
    5: "class enum extends super const export import",
    6: "enum",
    strict: "implements interface let package private protected public static yield",
    strictBind: "eval arguments"
  };

  // And the keywords

  var ecma5AndLessKeywords = "break case catch continue debugger default do else finally for function if return switch throw try var while with null true false instanceof typeof void delete new in this";

  var keywords$1 = {
    5: ecma5AndLessKeywords,
    "5module": ecma5AndLessKeywords + " export import",
    6: ecma5AndLessKeywords + " const class extends export import super"
  };

  var keywordRelationalOperator = /^in(stanceof)?$/;

  // ## Character categories

  // Big ugly regular expressions that match characters in the
  // whitespace, identifier, and identifier-start categories. These
  // are only applied when a character is found to actually have a
  // code point above 128.
  // Generated by `bin/generate-identifier-regex.js`.
  var nonASCIIidentifierStartChars = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u037f\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u052f\u0531-\u0556\u0559\u0560-\u0588\u05d0-\u05ea\u05ef-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u0860-\u086a\u0870-\u0887\u0889-\u088e\u08a0-\u08c9\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u09fc\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0af9\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c39\u0c3d\u0c58-\u0c5a\u0c5d\u0c60\u0c61\u0c80\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cdd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d04-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d54-\u0d56\u0d5f-\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e86-\u0e8a\u0e8c-\u0ea3\u0ea5\u0ea7-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f5\u13f8-\u13fd\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f8\u1700-\u1711\u171f-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1878\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191e\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4c\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1c80-\u1c88\u1c90-\u1cba\u1cbd-\u1cbf\u1ce9-\u1cec\u1cee-\u1cf3\u1cf5\u1cf6\u1cfa\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2118-\u211d\u2124\u2126\u2128\u212a-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309b-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312f\u3131-\u318e\u31a0-\u31bf\u31f0-\u31ff\u3400-\u4dbf\u4e00-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua69d\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua7ca\ua7d0\ua7d1\ua7d3\ua7d5-\ua7d9\ua7f2-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua8fd\ua8fe\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\ua9e0-\ua9e4\ua9e6-\ua9ef\ua9fa-\ua9fe\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa7e-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uab30-\uab5a\uab5c-\uab69\uab70-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc";
  var nonASCIIidentifierChars = "\u200c\u200d\xb7\u0300-\u036f\u0387\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u0669\u0670\u06d6-\u06dc\u06df-\u06e4\u06e7\u06e8\u06ea-\u06ed\u06f0-\u06f9\u0711\u0730-\u074a\u07a6-\u07b0\u07c0-\u07c9\u07eb-\u07f3\u07fd\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0859-\u085b\u0898-\u089f\u08ca-\u08e1\u08e3-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09cb-\u09cd\u09d7\u09e2\u09e3\u09e6-\u09ef\u09fe\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2\u0ae3\u0ae6-\u0aef\u0afa-\u0aff\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b55-\u0b57\u0b62\u0b63\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c00-\u0c04\u0c3c\u0c3e-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0c66-\u0c6f\u0c81-\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0ce6-\u0cef\u0d00-\u0d03\u0d3b\u0d3c\u0d3e-\u0d44\u0d46-\u0d48\u0d4a-\u0d4d\u0d57\u0d62\u0d63\u0d66-\u0d6f\u0d81-\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0de6-\u0def\u0df2\u0df3\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0e50-\u0e59\u0eb1\u0eb4-\u0ebc\u0ec8-\u0ecd\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f3e\u0f3f\u0f71-\u0f84\u0f86\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u102b-\u103e\u1040-\u1049\u1056-\u1059\u105e-\u1060\u1062-\u1064\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u1369-\u1371\u1712-\u1715\u1732-\u1734\u1752\u1753\u1772\u1773\u17b4-\u17d3\u17dd\u17e0-\u17e9\u180b-\u180d\u180f-\u1819\u18a9\u1920-\u192b\u1930-\u193b\u1946-\u194f\u19d0-\u19da\u1a17-\u1a1b\u1a55-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1ab0-\u1abd\u1abf-\u1ace\u1b00-\u1b04\u1b34-\u1b44\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1b82\u1ba1-\u1bad\u1bb0-\u1bb9\u1be6-\u1bf3\u1c24-\u1c37\u1c40-\u1c49\u1c50-\u1c59\u1cd0-\u1cd2\u1cd4-\u1ce8\u1ced\u1cf4\u1cf7-\u1cf9\u1dc0-\u1dff\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2cef-\u2cf1\u2d7f\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua620-\ua629\ua66f\ua674-\ua67d\ua69e\ua69f\ua6f0\ua6f1\ua802\ua806\ua80b\ua823-\ua827\ua82c\ua880\ua881\ua8b4-\ua8c5\ua8d0-\ua8d9\ua8e0-\ua8f1\ua8ff-\ua909\ua926-\ua92d\ua947-\ua953\ua980-\ua983\ua9b3-\ua9c0\ua9d0-\ua9d9\ua9e5\ua9f0-\ua9f9\uaa29-\uaa36\uaa43\uaa4c\uaa4d\uaa50-\uaa59\uaa7b-\uaa7d\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uaaeb-\uaaef\uaaf5\uaaf6\uabe3-\uabea\uabec\uabed\uabf0-\uabf9\ufb1e\ufe00-\ufe0f\ufe20-\ufe2f\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f";

  var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]");
  var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]");

  nonASCIIidentifierStartChars = nonASCIIidentifierChars = null;

  // These are a run-length and offset encoded representation of the
  // >0xffff code points that are a valid part of identifiers. The
  // offset starts at 0x10000, and each pair of numbers represents an
  // offset to the next range, and then a size of the range. They were
  // generated by bin/generate-identifier-regex.js

  // eslint-disable-next-line comma-spacing
  var astralIdentifierStartCodes = [0,11,2,25,2,18,2,1,2,14,3,13,35,122,70,52,268,28,4,48,48,31,14,29,6,37,11,29,3,35,5,7,2,4,43,157,19,35,5,35,5,39,9,51,13,10,2,14,2,6,2,1,2,10,2,14,2,6,2,1,68,310,10,21,11,7,25,5,2,41,2,8,70,5,3,0,2,43,2,1,4,0,3,22,11,22,10,30,66,18,2,1,11,21,11,25,71,55,7,1,65,0,16,3,2,2,2,28,43,28,4,28,36,7,2,27,28,53,11,21,11,18,14,17,111,72,56,50,14,50,14,35,349,41,7,1,79,28,11,0,9,21,43,17,47,20,28,22,13,52,58,1,3,0,14,44,33,24,27,35,30,0,3,0,9,34,4,0,13,47,15,3,22,0,2,0,36,17,2,24,85,6,2,0,2,3,2,14,2,9,8,46,39,7,3,1,3,21,2,6,2,1,2,4,4,0,19,0,13,4,159,52,19,3,21,2,31,47,21,1,2,0,185,46,42,3,37,47,21,0,60,42,14,0,72,26,38,6,186,43,117,63,32,7,3,0,3,7,2,1,2,23,16,0,2,0,95,7,3,38,17,0,2,0,29,0,11,39,8,0,22,0,12,45,20,0,19,72,264,8,2,36,18,0,50,29,113,6,2,1,2,37,22,0,26,5,2,1,2,31,15,0,328,18,190,0,80,921,103,110,18,195,2637,96,16,1070,4050,582,8634,568,8,30,18,78,18,29,19,47,17,3,32,20,6,18,689,63,129,74,6,0,67,12,65,1,2,0,29,6135,9,1237,43,8,8936,3,2,6,2,1,2,290,46,2,18,3,9,395,2309,106,6,12,4,8,8,9,5991,84,2,70,2,1,3,0,3,1,3,3,2,11,2,0,2,6,2,64,2,3,3,7,2,6,2,27,2,3,2,4,2,0,4,6,2,339,3,24,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,7,1845,30,482,44,11,6,17,0,322,29,19,43,1269,6,2,3,2,1,2,14,2,196,60,67,8,0,1205,3,2,26,2,1,2,0,3,0,2,9,2,3,2,0,2,0,7,0,5,0,2,0,2,0,2,2,2,1,2,0,3,0,2,0,2,0,2,0,2,0,2,1,2,0,3,3,2,6,2,3,2,3,2,0,2,9,2,16,6,2,2,4,2,16,4421,42719,33,4152,8,221,3,5761,15,7472,3104,541,1507,4938];

  // eslint-disable-next-line comma-spacing
  var astralIdentifierCodes = [509,0,227,0,150,4,294,9,1368,2,2,1,6,3,41,2,5,0,166,1,574,3,9,9,370,1,154,10,50,3,123,2,54,14,32,10,3,1,11,3,46,10,8,0,46,9,7,2,37,13,2,9,6,1,45,0,13,2,49,13,9,3,2,11,83,11,7,0,161,11,6,9,7,3,56,1,2,6,3,1,3,2,10,0,11,1,3,6,4,4,193,17,10,9,5,0,82,19,13,9,214,6,3,8,28,1,83,16,16,9,82,12,9,9,84,14,5,9,243,14,166,9,71,5,2,1,3,3,2,0,2,1,13,9,120,6,3,6,4,0,29,9,41,6,2,3,9,0,10,10,47,15,406,7,2,7,17,9,57,21,2,13,123,5,4,0,2,1,2,6,2,0,9,9,49,4,2,1,2,4,9,9,330,3,19306,9,87,9,39,4,60,6,26,9,1014,0,2,54,8,3,82,0,12,1,19628,1,4706,45,3,22,543,4,4,5,9,7,3,6,31,3,149,2,1418,49,513,54,5,49,9,0,15,0,23,4,2,14,1361,6,2,16,3,6,2,1,2,4,262,6,10,9,357,0,62,13,1495,6,110,6,6,9,4759,9,787719,239];

  // This has a complexity linear to the value of the code. The
  // assumption is that looking up astral identifier characters is
  // rare.
  function isInAstralSet(code, set) {
    var pos = 0x10000;
    for (var i = 0; i < set.length; i += 2) {
      pos += set[i];
      if (pos > code) { return false }
      pos += set[i + 1];
      if (pos >= code) { return true }
    }
  }

  // Test whether a given character code starts an identifier.

  function isIdentifierStart(code, astral) {
    if (code < 65) { return code === 36 }
    if (code < 91) { return true }
    if (code < 97) { return code === 95 }
    if (code < 123) { return true }
    if (code <= 0xffff) { return code >= 0xaa && nonASCIIidentifierStart.test(String.fromCharCode(code)) }
    if (astral === false) { return false }
    return isInAstralSet(code, astralIdentifierStartCodes)
  }

  // Test whether a given character is part of an identifier.

  function isIdentifierChar(code, astral) {
    if (code < 48) { return code === 36 }
    if (code < 58) { return true }
    if (code < 65) { return false }
    if (code < 91) { return true }
    if (code < 97) { return code === 95 }
    if (code < 123) { return true }
    if (code <= 0xffff) { return code >= 0xaa && nonASCIIidentifier.test(String.fromCharCode(code)) }
    if (astral === false) { return false }
    return isInAstralSet(code, astralIdentifierStartCodes) || isInAstralSet(code, astralIdentifierCodes)
  }

  // ## Token types

  // The assignment of fine-grained, information-carrying type objects
  // allows the tokenizer to store the information it has about a
  // token in a way that is very cheap for the parser to look up.

  // All token type variables start with an underscore, to make them
  // easy to recognize.

  // The `beforeExpr` property is used to disambiguate between regular
  // expressions and divisions. It is set on all token types that can
  // be followed by an expression (thus, a slash after them would be a
  // regular expression).
  //
  // The `startsExpr` property is used to check if the token ends a
  // `yield` expression. It is set on all token types that either can
  // directly start an expression (like a quotation mark) or can
  // continue an expression (like the body of a string).
  //
  // `isLoop` marks a keyword as starting a loop, which is important
  // to know when parsing a label, in order to allow or disallow
  // continue jumps to that label.

  var TokenType = function TokenType(label, conf) {
    if ( conf === void 0 ) conf = {};

    this.label = label;
    this.keyword = conf.keyword;
    this.beforeExpr = !!conf.beforeExpr;
    this.startsExpr = !!conf.startsExpr;
    this.isLoop = !!conf.isLoop;
    this.isAssign = !!conf.isAssign;
    this.prefix = !!conf.prefix;
    this.postfix = !!conf.postfix;
    this.binop = conf.binop || null;
    this.updateContext = null;
  };

  function binop(name, prec) {
    return new TokenType(name, {beforeExpr: true, binop: prec})
  }
  var beforeExpr = {beforeExpr: true}, startsExpr = {startsExpr: true};

  // Map keyword names to token types.

  var keywords = {};

  // Succinct definitions of keyword token types
  function kw(name, options) {
    if ( options === void 0 ) options = {};

    options.keyword = name;
    return keywords[name] = new TokenType(name, options)
  }

  var types$1 = {
    num: new TokenType("num", startsExpr),
    regexp: new TokenType("regexp", startsExpr),
    string: new TokenType("string", startsExpr),
    name: new TokenType("name", startsExpr),
    privateId: new TokenType("privateId", startsExpr),
    eof: new TokenType("eof"),

    // Punctuation token types.
    bracketL: new TokenType("[", {beforeExpr: true, startsExpr: true}),
    bracketR: new TokenType("]"),
    braceL: new TokenType("{", {beforeExpr: true, startsExpr: true}),
    braceR: new TokenType("}"),
    parenL: new TokenType("(", {beforeExpr: true, startsExpr: true}),
    parenR: new TokenType(")"),
    comma: new TokenType(",", beforeExpr),
    semi: new TokenType(";", beforeExpr),
    colon: new TokenType(":", beforeExpr),
    dot: new TokenType("."),
    question: new TokenType("?", beforeExpr),
    questionDot: new TokenType("?."),
    arrow: new TokenType("=>", beforeExpr),
    template: new TokenType("template"),
    invalidTemplate: new TokenType("invalidTemplate"),
    ellipsis: new TokenType("...", beforeExpr),
    backQuote: new TokenType("`", startsExpr),
    dollarBraceL: new TokenType("${", {beforeExpr: true, startsExpr: true}),

    // Operators. These carry several kinds of properties to help the
    // parser use them properly (the presence of these properties is
    // what categorizes them as operators).
    //
    // `binop`, when present, specifies that this operator is a binary
    // operator, and will refer to its precedence.
    //
    // `prefix` and `postfix` mark the operator as a prefix or postfix
    // unary operator.
    //
    // `isAssign` marks all of `=`, `+=`, `-=` etcetera, which act as
    // binary operators with a very low precedence, that should result
    // in AssignmentExpression nodes.

    eq: new TokenType("=", {beforeExpr: true, isAssign: true}),
    assign: new TokenType("_=", {beforeExpr: true, isAssign: true}),
    incDec: new TokenType("++/--", {prefix: true, postfix: true, startsExpr: true}),
    prefix: new TokenType("!/~", {beforeExpr: true, prefix: true, startsExpr: true}),
    logicalOR: binop("||", 1),
    logicalAND: binop("&&", 2),
    bitwiseOR: binop("|", 3),
    bitwiseXOR: binop("^", 4),
    bitwiseAND: binop("&", 5),
    equality: binop("==/!=/===/!==", 6),
    relational: binop("</>/<=/>=", 7),
    bitShift: binop("<</>>/>>>", 8),
    plusMin: new TokenType("+/-", {beforeExpr: true, binop: 9, prefix: true, startsExpr: true}),
    modulo: binop("%", 10),
    star: binop("*", 10),
    slash: binop("/", 10),
    starstar: new TokenType("**", {beforeExpr: true}),
    coalesce: binop("??", 1),

    // Keyword token types.
    _break: kw("break"),
    _case: kw("case", beforeExpr),
    _catch: kw("catch"),
    _continue: kw("continue"),
    _debugger: kw("debugger"),
    _default: kw("default", beforeExpr),
    _do: kw("do", {isLoop: true, beforeExpr: true}),
    _else: kw("else", beforeExpr),
    _finally: kw("finally"),
    _for: kw("for", {isLoop: true}),
    _function: kw("function", startsExpr),
    _if: kw("if"),
    _return: kw("return", beforeExpr),
    _switch: kw("switch"),
    _throw: kw("throw", beforeExpr),
    _try: kw("try"),
    _var: kw("var"),
    _const: kw("const"),
    _while: kw("while", {isLoop: true}),
    _with: kw("with"),
    _new: kw("new", {beforeExpr: true, startsExpr: true}),
    _this: kw("this", startsExpr),
    _super: kw("super", startsExpr),
    _class: kw("class", startsExpr),
    _extends: kw("extends", beforeExpr),
    _export: kw("export"),
    _import: kw("import", startsExpr),
    _null: kw("null", startsExpr),
    _true: kw("true", startsExpr),
    _false: kw("false", startsExpr),
    _in: kw("in", {beforeExpr: true, binop: 7}),
    _instanceof: kw("instanceof", {beforeExpr: true, binop: 7}),
    _typeof: kw("typeof", {beforeExpr: true, prefix: true, startsExpr: true}),
    _void: kw("void", {beforeExpr: true, prefix: true, startsExpr: true}),
    _delete: kw("delete", {beforeExpr: true, prefix: true, startsExpr: true})
  };

  // Matches a whole line break (where CRLF is considered a single
  // line break). Used to count lines.

  var lineBreak = /\r\n?|\n|\u2028|\u2029/;
  var lineBreakG = new RegExp(lineBreak.source, "g");

  function isNewLine(code) {
    return code === 10 || code === 13 || code === 0x2028 || code === 0x2029
  }

  function nextLineBreak(code, from, end) {
    if ( end === void 0 ) end = code.length;

    for (var i = from; i < end; i++) {
      var next = code.charCodeAt(i);
      if (isNewLine(next))
        { return i < end - 1 && next === 13 && code.charCodeAt(i + 1) === 10 ? i + 2 : i + 1 }
    }
    return -1
  }

  var nonASCIIwhitespace = /[\u1680\u2000-\u200a\u202f\u205f\u3000\ufeff]/;

  var skipWhiteSpace = /(?:\s|\/\/.*|\/\*[^]*?\*\/)*/g;

  var ref = Object.prototype;
  var hasOwnProperty = ref.hasOwnProperty;
  var toString = ref.toString;

  var hasOwn = Object.hasOwn || (function (obj, propName) { return (
    hasOwnProperty.call(obj, propName)
  ); });

  var isArray = Array.isArray || (function (obj) { return (
    toString.call(obj) === "[object Array]"
  ); });

  function wordsRegexp(words) {
    return new RegExp("^(?:" + words.replace(/ /g, "|") + ")$")
  }

  var loneSurrogate = /(?:[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF])/;

  // These are used when `options.locations` is on, for the
  // `startLoc` and `endLoc` properties.

  var Position = function Position(line, col) {
    this.line = line;
    this.column = col;
  };

  Position.prototype.offset = function offset (n) {
    return new Position(this.line, this.column + n)
  };

  var SourceLocation = function SourceLocation(p, start, end) {
    this.start = start;
    this.end = end;
    if (p.sourceFile !== null) { this.source = p.sourceFile; }
  };

  // The `getLineInfo` function is mostly useful when the
  // `locations` option is off (for performance reasons) and you
  // want to find the line/column position for a given character
  // offset. `input` should be the code string that the offset refers
  // into.

  function getLineInfo(input, offset) {
    for (var line = 1, cur = 0;;) {
      var nextBreak = nextLineBreak(input, cur, offset);
      if (nextBreak < 0) { return new Position(line, offset - cur) }
      ++line;
      cur = nextBreak;
    }
  }

  // A second argument must be given to configure the parser process.
  // These options are recognized (only `ecmaVersion` is required):

  var defaultOptions = {
    // `ecmaVersion` indicates the ECMAScript version to parse. Must be
    // either 3, 5, 6 (or 2015), 7 (2016), 8 (2017), 9 (2018), 10
    // (2019), 11 (2020), 12 (2021), 13 (2022), or `"latest"` (the
    // latest version the library supports). This influences support
    // for strict mode, the set of reserved words, and support for
    // new syntax features.
    ecmaVersion: null,
    // `sourceType` indicates the mode the code should be parsed in.
    // Can be either `"script"` or `"module"`. This influences global
    // strict mode and parsing of `import` and `export` declarations.
    sourceType: "script",
    // `onInsertedSemicolon` can be a callback that will be called
    // when a semicolon is automatically inserted. It will be passed
    // the position of the comma as an offset, and if `locations` is
    // enabled, it is given the location as a `{line, column}` object
    // as second argument.
    onInsertedSemicolon: null,
    // `onTrailingComma` is similar to `onInsertedSemicolon`, but for
    // trailing commas.
    onTrailingComma: null,
    // By default, reserved words are only enforced if ecmaVersion >= 5.
    // Set `allowReserved` to a boolean value to explicitly turn this on
    // an off. When this option has the value "never", reserved words
    // and keywords can also not be used as property names.
    allowReserved: null,
    // When enabled, a return at the top level is not considered an
    // error.
    allowReturnOutsideFunction: false,
    // When enabled, import/export statements are not constrained to
    // appearing at the top of the program, and an import.meta expression
    // in a script isn't considered an error.
    allowImportExportEverywhere: false,
    // By default, await identifiers are allowed to appear at the top-level scope only if ecmaVersion >= 2022.
    // When enabled, await identifiers are allowed to appear at the top-level scope,
    // but they are still not allowed in non-async functions.
    allowAwaitOutsideFunction: null,
    // When enabled, super identifiers are not constrained to
    // appearing in methods and do not raise an error when they appear elsewhere.
    allowSuperOutsideMethod: null,
    // When enabled, hashbang directive in the beginning of file
    // is allowed and treated as a line comment.
    allowHashBang: false,
    // When `locations` is on, `loc` properties holding objects with
    // `start` and `end` properties in `{line, column}` form (with
    // line being 1-based and column 0-based) will be attached to the
    // nodes.
    locations: false,
    // A function can be passed as `onToken` option, which will
    // cause Acorn to call that function with object in the same
    // format as tokens returned from `tokenizer().getToken()`. Note
    // that you are not allowed to call the parser from the
    // callback—that will corrupt its internal state.
    onToken: null,
    // A function can be passed as `onComment` option, which will
    // cause Acorn to call that function with `(block, text, start,
    // end)` parameters whenever a comment is skipped. `block` is a
    // boolean indicating whether this is a block (`/* */`) comment,
    // `text` is the content of the comment, and `start` and `end` are
    // character offsets that denote the start and end of the comment.
    // When the `locations` option is on, two more parameters are
    // passed, the full `{line, column}` locations of the start and
    // end of the comments. Note that you are not allowed to call the
    // parser from the callback—that will corrupt its internal state.
    onComment: null,
    // Nodes have their start and end characters offsets recorded in
    // `start` and `end` properties (directly on the node, rather than
    // the `loc` object, which holds line/column data. To also add a
    // [semi-standardized][range] `range` property holding a `[start,
    // end]` array with the same numbers, set the `ranges` option to
    // `true`.
    //
    // [range]: https://bugzilla.mozilla.org/show_bug.cgi?id=745678
    ranges: false,
    // It is possible to parse multiple files into a single AST by
    // passing the tree produced by parsing the first file as
    // `program` option in subsequent parses. This will add the
    // toplevel forms of the parsed file to the `Program` (top) node
    // of an existing parse tree.
    program: null,
    // When `locations` is on, you can pass this to record the source
    // file in every node's `loc` object.
    sourceFile: null,
    // This value, if given, is stored in every node, whether
    // `locations` is on or off.
    directSourceFile: null,
    // When enabled, parenthesized expressions are represented by
    // (non-standard) ParenthesizedExpression nodes
    preserveParens: false
  };

  // Interpret and default an options object

  var warnedAboutEcmaVersion = false;

  function getOptions(opts) {
    var options = {};

    for (var opt in defaultOptions)
      { options[opt] = opts && hasOwn(opts, opt) ? opts[opt] : defaultOptions[opt]; }

    if (options.ecmaVersion === "latest") {
      options.ecmaVersion = 1e8;
    } else if (options.ecmaVersion == null) {
      if (!warnedAboutEcmaVersion && typeof console === "object" && console.warn) {
        warnedAboutEcmaVersion = true;
        console.warn("Since Acorn 8.0.0, options.ecmaVersion is required.\nDefaulting to 2020, but this will stop working in the future.");
      }
      options.ecmaVersion = 11;
    } else if (options.ecmaVersion >= 2015) {
      options.ecmaVersion -= 2009;
    }

    if (options.allowReserved == null)
      { options.allowReserved = options.ecmaVersion < 5; }

    if (isArray(options.onToken)) {
      var tokens = options.onToken;
      options.onToken = function (token) { return tokens.push(token); };
    }
    if (isArray(options.onComment))
      { options.onComment = pushComment(options, options.onComment); }

    return options
  }

  function pushComment(options, array) {
    return function(block, text, start, end, startLoc, endLoc) {
      var comment = {
        type: block ? "Block" : "Line",
        value: text,
        start: start,
        end: end
      };
      if (options.locations)
        { comment.loc = new SourceLocation(this, startLoc, endLoc); }
      if (options.ranges)
        { comment.range = [start, end]; }
      array.push(comment);
    }
  }

  // Each scope gets a bitset that may contain these flags
  var
      SCOPE_TOP = 1,
      SCOPE_FUNCTION = 2,
      SCOPE_ASYNC = 4,
      SCOPE_GENERATOR = 8,
      SCOPE_ARROW = 16,
      SCOPE_SIMPLE_CATCH = 32,
      SCOPE_SUPER = 64,
      SCOPE_DIRECT_SUPER = 128,
      SCOPE_CLASS_STATIC_BLOCK = 256,
      SCOPE_VAR = SCOPE_TOP | SCOPE_FUNCTION | SCOPE_CLASS_STATIC_BLOCK;

  function functionFlags(async, generator) {
    return SCOPE_FUNCTION | (async ? SCOPE_ASYNC : 0) | (generator ? SCOPE_GENERATOR : 0)
  }

  // Used in checkLVal* and declareName to determine the type of a binding
  var
      BIND_NONE = 0, // Not a binding
      BIND_VAR = 1, // Var-style binding
      BIND_LEXICAL = 2, // Let- or const-style binding
      BIND_FUNCTION = 3, // Function declaration
      BIND_SIMPLE_CATCH = 4, // Simple (identifier pattern) catch binding
      BIND_OUTSIDE = 5; // Special case for function names as bound inside the function

  var Parser = function Parser(options, input, startPos) {
    this.options = options = getOptions(options);
    this.sourceFile = options.sourceFile;
    this.keywords = wordsRegexp(keywords$1[options.ecmaVersion >= 6 ? 6 : options.sourceType === "module" ? "5module" : 5]);
    var reserved = "";
    if (options.allowReserved !== true) {
      reserved = reservedWords[options.ecmaVersion >= 6 ? 6 : options.ecmaVersion === 5 ? 5 : 3];
      if (options.sourceType === "module") { reserved += " await"; }
    }
    this.reservedWords = wordsRegexp(reserved);
    var reservedStrict = (reserved ? reserved + " " : "") + reservedWords.strict;
    this.reservedWordsStrict = wordsRegexp(reservedStrict);
    this.reservedWordsStrictBind = wordsRegexp(reservedStrict + " " + reservedWords.strictBind);
    this.input = String(input);

    // Used to signal to callers of `readWord1` whether the word
    // contained any escape sequences. This is needed because words with
    // escape sequences must not be interpreted as keywords.
    this.containsEsc = false;

    // Set up token state

    // The current position of the tokenizer in the input.
    if (startPos) {
      this.pos = startPos;
      this.lineStart = this.input.lastIndexOf("\n", startPos - 1) + 1;
      this.curLine = this.input.slice(0, this.lineStart).split(lineBreak).length;
    } else {
      this.pos = this.lineStart = 0;
      this.curLine = 1;
    }

    // Properties of the current token:
    // Its type
    this.type = types$1.eof;
    // For tokens that include more information than their type, the value
    this.value = null;
    // Its start and end offset
    this.start = this.end = this.pos;
    // And, if locations are used, the {line, column} object
    // corresponding to those offsets
    this.startLoc = this.endLoc = this.curPosition();

    // Position information for the previous token
    this.lastTokEndLoc = this.lastTokStartLoc = null;
    this.lastTokStart = this.lastTokEnd = this.pos;

    // The context stack is used to superficially track syntactic
    // context to predict whether a regular expression is allowed in a
    // given position.
    this.context = this.initialContext();
    this.exprAllowed = true;

    // Figure out if it's a module code.
    this.inModule = options.sourceType === "module";
    this.strict = this.inModule || this.strictDirective(this.pos);

    // Used to signify the start of a potential arrow function
    this.potentialArrowAt = -1;
    this.potentialArrowInForAwait = false;

    // Positions to delayed-check that yield/await does not exist in default parameters.
    this.yieldPos = this.awaitPos = this.awaitIdentPos = 0;
    // Labels in scope.
    this.labels = [];
    // Thus-far undefined exports.
    this.undefinedExports = Object.create(null);

    // If enabled, skip leading hashbang line.
    if (this.pos === 0 && options.allowHashBang && this.input.slice(0, 2) === "#!")
      { this.skipLineComment(2); }

    // Scope tracking for duplicate variable names (see scope.js)
    this.scopeStack = [];
    this.enterScope(SCOPE_TOP);

    // For RegExp validation
    this.regexpState = null;

    // The stack of private names.
    // Each element has two properties: 'declared' and 'used'.
    // When it exited from the outermost class definition, all used private names must be declared.
    this.privateNameStack = [];
  };

  var prototypeAccessors = { inFunction: { configurable: true },inGenerator: { configurable: true },inAsync: { configurable: true },canAwait: { configurable: true },allowSuper: { configurable: true },allowDirectSuper: { configurable: true },treatFunctionsAsVar: { configurable: true },allowNewDotTarget: { configurable: true },inClassStaticBlock: { configurable: true } };

  Parser.prototype.parse = function parse () {
    var node = this.options.program || this.startNode();
    this.nextToken();
    return this.parseTopLevel(node)
  };

  prototypeAccessors.inFunction.get = function () { return (this.currentVarScope().flags & SCOPE_FUNCTION) > 0 };

  prototypeAccessors.inGenerator.get = function () { return (this.currentVarScope().flags & SCOPE_GENERATOR) > 0 && !this.currentVarScope().inClassFieldInit };

  prototypeAccessors.inAsync.get = function () { return (this.currentVarScope().flags & SCOPE_ASYNC) > 0 && !this.currentVarScope().inClassFieldInit };

  prototypeAccessors.canAwait.get = function () {
    for (var i = this.scopeStack.length - 1; i >= 0; i--) {
      var scope = this.scopeStack[i];
      if (scope.inClassFieldInit || scope.flags & SCOPE_CLASS_STATIC_BLOCK) { return false }
      if (scope.flags & SCOPE_FUNCTION) { return (scope.flags & SCOPE_ASYNC) > 0 }
    }
    return (this.inModule && this.options.ecmaVersion >= 13) || this.options.allowAwaitOutsideFunction
  };

  prototypeAccessors.allowSuper.get = function () {
    var ref = this.currentThisScope();
      var flags = ref.flags;
      var inClassFieldInit = ref.inClassFieldInit;
    return (flags & SCOPE_SUPER) > 0 || inClassFieldInit || this.options.allowSuperOutsideMethod
  };

  prototypeAccessors.allowDirectSuper.get = function () { return (this.currentThisScope().flags & SCOPE_DIRECT_SUPER) > 0 };

  prototypeAccessors.treatFunctionsAsVar.get = function () { return this.treatFunctionsAsVarInScope(this.currentScope()) };

  prototypeAccessors.allowNewDotTarget.get = function () {
    var ref = this.currentThisScope();
      var flags = ref.flags;
      var inClassFieldInit = ref.inClassFieldInit;
    return (flags & (SCOPE_FUNCTION | SCOPE_CLASS_STATIC_BLOCK)) > 0 || inClassFieldInit
  };

  prototypeAccessors.inClassStaticBlock.get = function () {
    return (this.currentVarScope().flags & SCOPE_CLASS_STATIC_BLOCK) > 0
  };

  Parser.extend = function extend () {
      var plugins = [], len = arguments.length;
      while ( len-- ) plugins[ len ] = arguments[ len ];

    var cls = this;
    for (var i = 0; i < plugins.length; i++) { cls = plugins[i](cls); }
    return cls
  };

  Parser.parse = function parse (input, options) {
    return new this(options, input).parse()
  };

  Parser.parseExpressionAt = function parseExpressionAt (input, pos, options) {
    var parser = new this(options, input, pos);
    parser.nextToken();
    return parser.parseExpression()
  };

  Parser.tokenizer = function tokenizer (input, options) {
    return new this(options, input)
  };

  Object.defineProperties( Parser.prototype, prototypeAccessors );

  var pp$9 = Parser.prototype;

  // ## Parser utilities

  var literal = /^(?:'((?:\\.|[^'\\])*?)'|"((?:\\.|[^"\\])*?)")/;
  pp$9.strictDirective = function(start) {
    for (;;) {
      // Try to find string literal.
      skipWhiteSpace.lastIndex = start;
      start += skipWhiteSpace.exec(this.input)[0].length;
      var match = literal.exec(this.input.slice(start));
      if (!match) { return false }
      if ((match[1] || match[2]) === "use strict") {
        skipWhiteSpace.lastIndex = start + match[0].length;
        var spaceAfter = skipWhiteSpace.exec(this.input), end = spaceAfter.index + spaceAfter[0].length;
        var next = this.input.charAt(end);
        return next === ";" || next === "}" ||
          (lineBreak.test(spaceAfter[0]) &&
           !(/[(`.[+\-/*%<>=,?^&]/.test(next) || next === "!" && this.input.charAt(end + 1) === "="))
      }
      start += match[0].length;

      // Skip semicolon, if any.
      skipWhiteSpace.lastIndex = start;
      start += skipWhiteSpace.exec(this.input)[0].length;
      if (this.input[start] === ";")
        { start++; }
    }
  };

  // Predicate that tests whether the next token is of the given
  // type, and if yes, consumes it as a side effect.

  pp$9.eat = function(type) {
    if (this.type === type) {
      this.next();
      return true
    } else {
      return false
    }
  };

  // Tests whether parsed token is a contextual keyword.

  pp$9.isContextual = function(name) {
    return this.type === types$1.name && this.value === name && !this.containsEsc
  };

  // Consumes contextual keyword if possible.

  pp$9.eatContextual = function(name) {
    if (!this.isContextual(name)) { return false }
    this.next();
    return true
  };

  // Asserts that following token is given contextual keyword.

  pp$9.expectContextual = function(name) {
    if (!this.eatContextual(name)) { this.unexpected(); }
  };

  // Test whether a semicolon can be inserted at the current position.

  pp$9.canInsertSemicolon = function() {
    return this.type === types$1.eof ||
      this.type === types$1.braceR ||
      lineBreak.test(this.input.slice(this.lastTokEnd, this.start))
  };

  pp$9.insertSemicolon = function() {
    if (this.canInsertSemicolon()) {
      if (this.options.onInsertedSemicolon)
        { this.options.onInsertedSemicolon(this.lastTokEnd, this.lastTokEndLoc); }
      return true
    }
  };

  // Consume a semicolon, or, failing that, see if we are allowed to
  // pretend that there is a semicolon at this position.

  pp$9.semicolon = function() {
    if (!this.eat(types$1.semi) && !this.insertSemicolon()) { this.unexpected(); }
  };

  pp$9.afterTrailingComma = function(tokType, notNext) {
    if (this.type === tokType) {
      if (this.options.onTrailingComma)
        { this.options.onTrailingComma(this.lastTokStart, this.lastTokStartLoc); }
      if (!notNext)
        { this.next(); }
      return true
    }
  };

  // Expect a token of a given type. If found, consume it, otherwise,
  // raise an unexpected token error.

  pp$9.expect = function(type) {
    this.eat(type) || this.unexpected();
  };

  // Raise an unexpected token error.

  pp$9.unexpected = function(pos) {
    this.raise(pos != null ? pos : this.start, "Unexpected token");
  };

  function DestructuringErrors() {
    this.shorthandAssign =
    this.trailingComma =
    this.parenthesizedAssign =
    this.parenthesizedBind =
    this.doubleProto =
      -1;
  }

  pp$9.checkPatternErrors = function(refDestructuringErrors, isAssign) {
    if (!refDestructuringErrors) { return }
    if (refDestructuringErrors.trailingComma > -1)
      { this.raiseRecoverable(refDestructuringErrors.trailingComma, "Comma is not permitted after the rest element"); }
    var parens = isAssign ? refDestructuringErrors.parenthesizedAssign : refDestructuringErrors.parenthesizedBind;
    if (parens > -1) { this.raiseRecoverable(parens, "Parenthesized pattern"); }
  };

  pp$9.checkExpressionErrors = function(refDestructuringErrors, andThrow) {
    if (!refDestructuringErrors) { return false }
    var shorthandAssign = refDestructuringErrors.shorthandAssign;
    var doubleProto = refDestructuringErrors.doubleProto;
    if (!andThrow) { return shorthandAssign >= 0 || doubleProto >= 0 }
    if (shorthandAssign >= 0)
      { this.raise(shorthandAssign, "Shorthand property assignments are valid only in destructuring patterns"); }
    if (doubleProto >= 0)
      { this.raiseRecoverable(doubleProto, "Redefinition of __proto__ property"); }
  };

  pp$9.checkYieldAwaitInDefaultParams = function() {
    if (this.yieldPos && (!this.awaitPos || this.yieldPos < this.awaitPos))
      { this.raise(this.yieldPos, "Yield expression cannot be a default value"); }
    if (this.awaitPos)
      { this.raise(this.awaitPos, "Await expression cannot be a default value"); }
  };

  pp$9.isSimpleAssignTarget = function(expr) {
    if (expr.type === "ParenthesizedExpression")
      { return this.isSimpleAssignTarget(expr.expression) }
    return expr.type === "Identifier" || expr.type === "MemberExpression"
  };

  var pp$8 = Parser.prototype;

  // ### Statement parsing

  // Parse a program. Initializes the parser, reads any number of
  // statements, and wraps them in a Program node.  Optionally takes a
  // `program` argument.  If present, the statements will be appended
  // to its body instead of creating a new node.

  pp$8.parseTopLevel = function(node) {
    var exports = Object.create(null);
    if (!node.body) { node.body = []; }
    while (this.type !== types$1.eof) {
      var stmt = this.parseStatement(null, true, exports);
      node.body.push(stmt);
    }
    if (this.inModule)
      { for (var i = 0, list = Object.keys(this.undefinedExports); i < list.length; i += 1)
        {
          var name = list[i];

          this.raiseRecoverable(this.undefinedExports[name].start, ("Export '" + name + "' is not defined"));
        } }
    this.adaptDirectivePrologue(node.body);
    this.next();
    node.sourceType = this.options.sourceType;
    return this.finishNode(node, "Program")
  };

  var loopLabel = {kind: "loop"}, switchLabel = {kind: "switch"};

  pp$8.isLet = function(context) {
    if (this.options.ecmaVersion < 6 || !this.isContextual("let")) { return false }
    skipWhiteSpace.lastIndex = this.pos;
    var skip = skipWhiteSpace.exec(this.input);
    var next = this.pos + skip[0].length, nextCh = this.input.charCodeAt(next);
    // For ambiguous cases, determine if a LexicalDeclaration (or only a
    // Statement) is allowed here. If context is not empty then only a Statement
    // is allowed. However, `let [` is an explicit negative lookahead for
    // ExpressionStatement, so special-case it first.
    if (nextCh === 91 || nextCh === 92 || nextCh > 0xd7ff && nextCh < 0xdc00) { return true } // '[', '/', astral
    if (context) { return false }

    if (nextCh === 123) { return true } // '{'
    if (isIdentifierStart(nextCh, true)) {
      var pos = next + 1;
      while (isIdentifierChar(nextCh = this.input.charCodeAt(pos), true)) { ++pos; }
      if (nextCh === 92 || nextCh > 0xd7ff && nextCh < 0xdc00) { return true }
      var ident = this.input.slice(next, pos);
      if (!keywordRelationalOperator.test(ident)) { return true }
    }
    return false
  };

  // check 'async [no LineTerminator here] function'
  // - 'async /*foo*/ function' is OK.
  // - 'async /*\n*/ function' is invalid.
  pp$8.isAsyncFunction = function() {
    if (this.options.ecmaVersion < 8 || !this.isContextual("async"))
      { return false }

    skipWhiteSpace.lastIndex = this.pos;
    var skip = skipWhiteSpace.exec(this.input);
    var next = this.pos + skip[0].length, after;
    return !lineBreak.test(this.input.slice(this.pos, next)) &&
      this.input.slice(next, next + 8) === "function" &&
      (next + 8 === this.input.length ||
       !(isIdentifierChar(after = this.input.charCodeAt(next + 8)) || after > 0xd7ff && after < 0xdc00))
  };

  // Parse a single statement.
  //
  // If expecting a statement and finding a slash operator, parse a
  // regular expression literal. This is to handle cases like
  // `if (foo) /blah/.exec(foo)`, where looking at the previous token
  // does not help.

  pp$8.parseStatement = function(context, topLevel, exports) {
    var starttype = this.type, node = this.startNode(), kind;

    if (this.isLet(context)) {
      starttype = types$1._var;
      kind = "let";
    }

    // Most types of statements are recognized by the keyword they
    // start with. Many are trivial to parse, some require a bit of
    // complexity.

    switch (starttype) {
    case types$1._break: case types$1._continue: return this.parseBreakContinueStatement(node, starttype.keyword)
    case types$1._debugger: return this.parseDebuggerStatement(node)
    case types$1._do: return this.parseDoStatement(node)
    case types$1._for: return this.parseForStatement(node)
    case types$1._function:
      // Function as sole body of either an if statement or a labeled statement
      // works, but not when it is part of a labeled statement that is the sole
      // body of an if statement.
      if ((context && (this.strict || context !== "if" && context !== "label")) && this.options.ecmaVersion >= 6) { this.unexpected(); }
      return this.parseFunctionStatement(node, false, !context)
    case types$1._class:
      if (context) { this.unexpected(); }
      return this.parseClass(node, true)
    case types$1._if: return this.parseIfStatement(node)
    case types$1._return: return this.parseReturnStatement(node)
    case types$1._switch: return this.parseSwitchStatement(node)
    case types$1._throw: return this.parseThrowStatement(node)
    case types$1._try: return this.parseTryStatement(node)
    case types$1._const: case types$1._var:
      kind = kind || this.value;
      if (context && kind !== "var") { this.unexpected(); }
      return this.parseVarStatement(node, kind)
    case types$1._while: return this.parseWhileStatement(node)
    case types$1._with: return this.parseWithStatement(node)
    case types$1.braceL: return this.parseBlock(true, node)
    case types$1.semi: return this.parseEmptyStatement(node)
    case types$1._export:
    case types$1._import:
      if (this.options.ecmaVersion > 10 && starttype === types$1._import) {
        skipWhiteSpace.lastIndex = this.pos;
        var skip = skipWhiteSpace.exec(this.input);
        var next = this.pos + skip[0].length, nextCh = this.input.charCodeAt(next);
        if (nextCh === 40 || nextCh === 46) // '(' or '.'
          { return this.parseExpressionStatement(node, this.parseExpression()) }
      }

      if (!this.options.allowImportExportEverywhere) {
        if (!topLevel)
          { this.raise(this.start, "'import' and 'export' may only appear at the top level"); }
        if (!this.inModule)
          { this.raise(this.start, "'import' and 'export' may appear only with 'sourceType: module'"); }
      }
      return starttype === types$1._import ? this.parseImport(node) : this.parseExport(node, exports)

      // If the statement does not start with a statement keyword or a
      // brace, it's an ExpressionStatement or LabeledStatement. We
      // simply start parsing an expression, and afterwards, if the
      // next token is a colon and the expression was a simple
      // Identifier node, we switch to interpreting it as a label.
    default:
      if (this.isAsyncFunction()) {
        if (context) { this.unexpected(); }
        this.next();
        return this.parseFunctionStatement(node, true, !context)
      }

      var maybeName = this.value, expr = this.parseExpression();
      if (starttype === types$1.name && expr.type === "Identifier" && this.eat(types$1.colon))
        { return this.parseLabeledStatement(node, maybeName, expr, context) }
      else { return this.parseExpressionStatement(node, expr) }
    }
  };

  pp$8.parseBreakContinueStatement = function(node, keyword) {
    var isBreak = keyword === "break";
    this.next();
    if (this.eat(types$1.semi) || this.insertSemicolon()) { node.label = null; }
    else if (this.type !== types$1.name) { this.unexpected(); }
    else {
      node.label = this.parseIdent();
      this.semicolon();
    }

    // Verify that there is an actual destination to break or
    // continue to.
    var i = 0;
    for (; i < this.labels.length; ++i) {
      var lab = this.labels[i];
      if (node.label == null || lab.name === node.label.name) {
        if (lab.kind != null && (isBreak || lab.kind === "loop")) { break }
        if (node.label && isBreak) { break }
      }
    }
    if (i === this.labels.length) { this.raise(node.start, "Unsyntactic " + keyword); }
    return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement")
  };

  pp$8.parseDebuggerStatement = function(node) {
    this.next();
    this.semicolon();
    return this.finishNode(node, "DebuggerStatement")
  };

  pp$8.parseDoStatement = function(node) {
    this.next();
    this.labels.push(loopLabel);
    node.body = this.parseStatement("do");
    this.labels.pop();
    this.expect(types$1._while);
    node.test = this.parseParenExpression();
    if (this.options.ecmaVersion >= 6)
      { this.eat(types$1.semi); }
    else
      { this.semicolon(); }
    return this.finishNode(node, "DoWhileStatement")
  };

  // Disambiguating between a `for` and a `for`/`in` or `for`/`of`
  // loop is non-trivial. Basically, we have to parse the init `var`
  // statement or expression, disallowing the `in` operator (see
  // the second parameter to `parseExpression`), and then check
  // whether the next token is `in` or `of`. When there is no init
  // part (semicolon immediately after the opening parenthesis), it
  // is a regular `for` loop.

  pp$8.parseForStatement = function(node) {
    this.next();
    var awaitAt = (this.options.ecmaVersion >= 9 && this.canAwait && this.eatContextual("await")) ? this.lastTokStart : -1;
    this.labels.push(loopLabel);
    this.enterScope(0);
    this.expect(types$1.parenL);
    if (this.type === types$1.semi) {
      if (awaitAt > -1) { this.unexpected(awaitAt); }
      return this.parseFor(node, null)
    }
    var isLet = this.isLet();
    if (this.type === types$1._var || this.type === types$1._const || isLet) {
      var init$1 = this.startNode(), kind = isLet ? "let" : this.value;
      this.next();
      this.parseVar(init$1, true, kind);
      this.finishNode(init$1, "VariableDeclaration");
      if ((this.type === types$1._in || (this.options.ecmaVersion >= 6 && this.isContextual("of"))) && init$1.declarations.length === 1) {
        if (this.options.ecmaVersion >= 9) {
          if (this.type === types$1._in) {
            if (awaitAt > -1) { this.unexpected(awaitAt); }
          } else { node.await = awaitAt > -1; }
        }
        return this.parseForIn(node, init$1)
      }
      if (awaitAt > -1) { this.unexpected(awaitAt); }
      return this.parseFor(node, init$1)
    }
    var startsWithLet = this.isContextual("let"), isForOf = false;
    var refDestructuringErrors = new DestructuringErrors;
    var init = this.parseExpression(awaitAt > -1 ? "await" : true, refDestructuringErrors);
    if (this.type === types$1._in || (isForOf = this.options.ecmaVersion >= 6 && this.isContextual("of"))) {
      if (this.options.ecmaVersion >= 9) {
        if (this.type === types$1._in) {
          if (awaitAt > -1) { this.unexpected(awaitAt); }
        } else { node.await = awaitAt > -1; }
      }
      if (startsWithLet && isForOf) { this.raise(init.start, "The left-hand side of a for-of loop may not start with 'let'."); }
      this.toAssignable(init, false, refDestructuringErrors);
      this.checkLValPattern(init);
      return this.parseForIn(node, init)
    } else {
      this.checkExpressionErrors(refDestructuringErrors, true);
    }
    if (awaitAt > -1) { this.unexpected(awaitAt); }
    return this.parseFor(node, init)
  };

  pp$8.parseFunctionStatement = function(node, isAsync, declarationPosition) {
    this.next();
    return this.parseFunction(node, FUNC_STATEMENT | (declarationPosition ? 0 : FUNC_HANGING_STATEMENT), false, isAsync)
  };

  pp$8.parseIfStatement = function(node) {
    this.next();
    node.test = this.parseParenExpression();
    // allow function declarations in branches, but only in non-strict mode
    node.consequent = this.parseStatement("if");
    node.alternate = this.eat(types$1._else) ? this.parseStatement("if") : null;
    return this.finishNode(node, "IfStatement")
  };

  pp$8.parseReturnStatement = function(node) {
    if (!this.inFunction && !this.options.allowReturnOutsideFunction)
      { this.raise(this.start, "'return' outside of function"); }
    this.next();

    // In `return` (and `break`/`continue`), the keywords with
    // optional arguments, we eagerly look for a semicolon or the
    // possibility to insert one.

    if (this.eat(types$1.semi) || this.insertSemicolon()) { node.argument = null; }
    else { node.argument = this.parseExpression(); this.semicolon(); }
    return this.finishNode(node, "ReturnStatement")
  };

  pp$8.parseSwitchStatement = function(node) {
    this.next();
    node.discriminant = this.parseParenExpression();
    node.cases = [];
    this.expect(types$1.braceL);
    this.labels.push(switchLabel);
    this.enterScope(0);

    // Statements under must be grouped (by label) in SwitchCase
    // nodes. `cur` is used to keep the node that we are currently
    // adding statements to.

    var cur;
    for (var sawDefault = false; this.type !== types$1.braceR;) {
      if (this.type === types$1._case || this.type === types$1._default) {
        var isCase = this.type === types$1._case;
        if (cur) { this.finishNode(cur, "SwitchCase"); }
        node.cases.push(cur = this.startNode());
        cur.consequent = [];
        this.next();
        if (isCase) {
          cur.test = this.parseExpression();
        } else {
          if (sawDefault) { this.raiseRecoverable(this.lastTokStart, "Multiple default clauses"); }
          sawDefault = true;
          cur.test = null;
        }
        this.expect(types$1.colon);
      } else {
        if (!cur) { this.unexpected(); }
        cur.consequent.push(this.parseStatement(null));
      }
    }
    this.exitScope();
    if (cur) { this.finishNode(cur, "SwitchCase"); }
    this.next(); // Closing brace
    this.labels.pop();
    return this.finishNode(node, "SwitchStatement")
  };

  pp$8.parseThrowStatement = function(node) {
    this.next();
    if (lineBreak.test(this.input.slice(this.lastTokEnd, this.start)))
      { this.raise(this.lastTokEnd, "Illegal newline after throw"); }
    node.argument = this.parseExpression();
    this.semicolon();
    return this.finishNode(node, "ThrowStatement")
  };

  // Reused empty array added for node fields that are always empty.

  var empty$1 = [];

  pp$8.parseTryStatement = function(node) {
    this.next();
    node.block = this.parseBlock();
    node.handler = null;
    if (this.type === types$1._catch) {
      var clause = this.startNode();
      this.next();
      if (this.eat(types$1.parenL)) {
        clause.param = this.parseBindingAtom();
        var simple = clause.param.type === "Identifier";
        this.enterScope(simple ? SCOPE_SIMPLE_CATCH : 0);
        this.checkLValPattern(clause.param, simple ? BIND_SIMPLE_CATCH : BIND_LEXICAL);
        this.expect(types$1.parenR);
      } else {
        if (this.options.ecmaVersion < 10) { this.unexpected(); }
        clause.param = null;
        this.enterScope(0);
      }
      clause.body = this.parseBlock(false);
      this.exitScope();
      node.handler = this.finishNode(clause, "CatchClause");
    }
    node.finalizer = this.eat(types$1._finally) ? this.parseBlock() : null;
    if (!node.handler && !node.finalizer)
      { this.raise(node.start, "Missing catch or finally clause"); }
    return this.finishNode(node, "TryStatement")
  };

  pp$8.parseVarStatement = function(node, kind) {
    this.next();
    this.parseVar(node, false, kind);
    this.semicolon();
    return this.finishNode(node, "VariableDeclaration")
  };

  pp$8.parseWhileStatement = function(node) {
    this.next();
    node.test = this.parseParenExpression();
    this.labels.push(loopLabel);
    node.body = this.parseStatement("while");
    this.labels.pop();
    return this.finishNode(node, "WhileStatement")
  };

  pp$8.parseWithStatement = function(node) {
    if (this.strict) { this.raise(this.start, "'with' in strict mode"); }
    this.next();
    node.object = this.parseParenExpression();
    node.body = this.parseStatement("with");
    return this.finishNode(node, "WithStatement")
  };

  pp$8.parseEmptyStatement = function(node) {
    this.next();
    return this.finishNode(node, "EmptyStatement")
  };

  pp$8.parseLabeledStatement = function(node, maybeName, expr, context) {
    for (var i$1 = 0, list = this.labels; i$1 < list.length; i$1 += 1)
      {
      var label = list[i$1];

      if (label.name === maybeName)
        { this.raise(expr.start, "Label '" + maybeName + "' is already declared");
    } }
    var kind = this.type.isLoop ? "loop" : this.type === types$1._switch ? "switch" : null;
    for (var i = this.labels.length - 1; i >= 0; i--) {
      var label$1 = this.labels[i];
      if (label$1.statementStart === node.start) {
        // Update information about previous labels on this node
        label$1.statementStart = this.start;
        label$1.kind = kind;
      } else { break }
    }
    this.labels.push({name: maybeName, kind: kind, statementStart: this.start});
    node.body = this.parseStatement(context ? context.indexOf("label") === -1 ? context + "label" : context : "label");
    this.labels.pop();
    node.label = expr;
    return this.finishNode(node, "LabeledStatement")
  };

  pp$8.parseExpressionStatement = function(node, expr) {
    node.expression = expr;
    this.semicolon();
    return this.finishNode(node, "ExpressionStatement")
  };

  // Parse a semicolon-enclosed block of statements, handling `"use
  // strict"` declarations when `allowStrict` is true (used for
  // function bodies).

  pp$8.parseBlock = function(createNewLexicalScope, node, exitStrict) {
    if ( createNewLexicalScope === void 0 ) createNewLexicalScope = true;
    if ( node === void 0 ) node = this.startNode();

    node.body = [];
    this.expect(types$1.braceL);
    if (createNewLexicalScope) { this.enterScope(0); }
    while (this.type !== types$1.braceR) {
      var stmt = this.parseStatement(null);
      node.body.push(stmt);
    }
    if (exitStrict) { this.strict = false; }
    this.next();
    if (createNewLexicalScope) { this.exitScope(); }
    return this.finishNode(node, "BlockStatement")
  };

  // Parse a regular `for` loop. The disambiguation code in
  // `parseStatement` will already have parsed the init statement or
  // expression.

  pp$8.parseFor = function(node, init) {
    node.init = init;
    this.expect(types$1.semi);
    node.test = this.type === types$1.semi ? null : this.parseExpression();
    this.expect(types$1.semi);
    node.update = this.type === types$1.parenR ? null : this.parseExpression();
    this.expect(types$1.parenR);
    node.body = this.parseStatement("for");
    this.exitScope();
    this.labels.pop();
    return this.finishNode(node, "ForStatement")
  };

  // Parse a `for`/`in` and `for`/`of` loop, which are almost
  // same from parser's perspective.

  pp$8.parseForIn = function(node, init) {
    var isForIn = this.type === types$1._in;
    this.next();

    if (
      init.type === "VariableDeclaration" &&
      init.declarations[0].init != null &&
      (
        !isForIn ||
        this.options.ecmaVersion < 8 ||
        this.strict ||
        init.kind !== "var" ||
        init.declarations[0].id.type !== "Identifier"
      )
    ) {
      this.raise(
        init.start,
        ((isForIn ? "for-in" : "for-of") + " loop variable declaration may not have an initializer")
      );
    }
    node.left = init;
    node.right = isForIn ? this.parseExpression() : this.parseMaybeAssign();
    this.expect(types$1.parenR);
    node.body = this.parseStatement("for");
    this.exitScope();
    this.labels.pop();
    return this.finishNode(node, isForIn ? "ForInStatement" : "ForOfStatement")
  };

  // Parse a list of variable declarations.

  pp$8.parseVar = function(node, isFor, kind) {
    node.declarations = [];
    node.kind = kind;
    for (;;) {
      var decl = this.startNode();
      this.parseVarId(decl, kind);
      if (this.eat(types$1.eq)) {
        decl.init = this.parseMaybeAssign(isFor);
      } else if (kind === "const" && !(this.type === types$1._in || (this.options.ecmaVersion >= 6 && this.isContextual("of")))) {
        this.unexpected();
      } else if (decl.id.type !== "Identifier" && !(isFor && (this.type === types$1._in || this.isContextual("of")))) {
        this.raise(this.lastTokEnd, "Complex binding patterns require an initialization value");
      } else {
        decl.init = null;
      }
      node.declarations.push(this.finishNode(decl, "VariableDeclarator"));
      if (!this.eat(types$1.comma)) { break }
    }
    return node
  };

  pp$8.parseVarId = function(decl, kind) {
    decl.id = this.parseBindingAtom();
    this.checkLValPattern(decl.id, kind === "var" ? BIND_VAR : BIND_LEXICAL, false);
  };

  var FUNC_STATEMENT = 1, FUNC_HANGING_STATEMENT = 2, FUNC_NULLABLE_ID = 4;

  // Parse a function declaration or literal (depending on the
  // `statement & FUNC_STATEMENT`).

  // Remove `allowExpressionBody` for 7.0.0, as it is only called with false
  pp$8.parseFunction = function(node, statement, allowExpressionBody, isAsync, forInit) {
    this.initFunction(node);
    if (this.options.ecmaVersion >= 9 || this.options.ecmaVersion >= 6 && !isAsync) {
      if (this.type === types$1.star && (statement & FUNC_HANGING_STATEMENT))
        { this.unexpected(); }
      node.generator = this.eat(types$1.star);
    }
    if (this.options.ecmaVersion >= 8)
      { node.async = !!isAsync; }

    if (statement & FUNC_STATEMENT) {
      node.id = (statement & FUNC_NULLABLE_ID) && this.type !== types$1.name ? null : this.parseIdent();
      if (node.id && !(statement & FUNC_HANGING_STATEMENT))
        // If it is a regular function declaration in sloppy mode, then it is
        // subject to Annex B semantics (BIND_FUNCTION). Otherwise, the binding
        // mode depends on properties of the current scope (see
        // treatFunctionsAsVar).
        { this.checkLValSimple(node.id, (this.strict || node.generator || node.async) ? this.treatFunctionsAsVar ? BIND_VAR : BIND_LEXICAL : BIND_FUNCTION); }
    }

    var oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, oldAwaitIdentPos = this.awaitIdentPos;
    this.yieldPos = 0;
    this.awaitPos = 0;
    this.awaitIdentPos = 0;
    this.enterScope(functionFlags(node.async, node.generator));

    if (!(statement & FUNC_STATEMENT))
      { node.id = this.type === types$1.name ? this.parseIdent() : null; }

    this.parseFunctionParams(node);
    this.parseFunctionBody(node, allowExpressionBody, false, forInit);

    this.yieldPos = oldYieldPos;
    this.awaitPos = oldAwaitPos;
    this.awaitIdentPos = oldAwaitIdentPos;
    return this.finishNode(node, (statement & FUNC_STATEMENT) ? "FunctionDeclaration" : "FunctionExpression")
  };

  pp$8.parseFunctionParams = function(node) {
    this.expect(types$1.parenL);
    node.params = this.parseBindingList(types$1.parenR, false, this.options.ecmaVersion >= 8);
    this.checkYieldAwaitInDefaultParams();
  };

  // Parse a class declaration or literal (depending on the
  // `isStatement` parameter).

  pp$8.parseClass = function(node, isStatement) {
    this.next();

    // ecma-262 14.6 Class Definitions
    // A class definition is always strict mode code.
    var oldStrict = this.strict;
    this.strict = true;

    this.parseClassId(node, isStatement);
    this.parseClassSuper(node);
    var privateNameMap = this.enterClassBody();
    var classBody = this.startNode();
    var hadConstructor = false;
    classBody.body = [];
    this.expect(types$1.braceL);
    while (this.type !== types$1.braceR) {
      var element = this.parseClassElement(node.superClass !== null);
      if (element) {
        classBody.body.push(element);
        if (element.type === "MethodDefinition" && element.kind === "constructor") {
          if (hadConstructor) { this.raise(element.start, "Duplicate constructor in the same class"); }
          hadConstructor = true;
        } else if (element.key && element.key.type === "PrivateIdentifier" && isPrivateNameConflicted(privateNameMap, element)) {
          this.raiseRecoverable(element.key.start, ("Identifier '#" + (element.key.name) + "' has already been declared"));
        }
      }
    }
    this.strict = oldStrict;
    this.next();
    node.body = this.finishNode(classBody, "ClassBody");
    this.exitClassBody();
    return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression")
  };

  pp$8.parseClassElement = function(constructorAllowsSuper) {
    if (this.eat(types$1.semi)) { return null }

    var ecmaVersion = this.options.ecmaVersion;
    var node = this.startNode();
    var keyName = "";
    var isGenerator = false;
    var isAsync = false;
    var kind = "method";
    var isStatic = false;

    if (this.eatContextual("static")) {
      // Parse static init block
      if (ecmaVersion >= 13 && this.eat(types$1.braceL)) {
        this.parseClassStaticBlock(node);
        return node
      }
      if (this.isClassElementNameStart() || this.type === types$1.star) {
        isStatic = true;
      } else {
        keyName = "static";
      }
    }
    node.static = isStatic;
    if (!keyName && ecmaVersion >= 8 && this.eatContextual("async")) {
      if ((this.isClassElementNameStart() || this.type === types$1.star) && !this.canInsertSemicolon()) {
        isAsync = true;
      } else {
        keyName = "async";
      }
    }
    if (!keyName && (ecmaVersion >= 9 || !isAsync) && this.eat(types$1.star)) {
      isGenerator = true;
    }
    if (!keyName && !isAsync && !isGenerator) {
      var lastValue = this.value;
      if (this.eatContextual("get") || this.eatContextual("set")) {
        if (this.isClassElementNameStart()) {
          kind = lastValue;
        } else {
          keyName = lastValue;
        }
      }
    }

    // Parse element name
    if (keyName) {
      // 'async', 'get', 'set', or 'static' were not a keyword contextually.
      // The last token is any of those. Make it the element name.
      node.computed = false;
      node.key = this.startNodeAt(this.lastTokStart, this.lastTokStartLoc);
      node.key.name = keyName;
      this.finishNode(node.key, "Identifier");
    } else {
      this.parseClassElementName(node);
    }

    // Parse element value
    if (ecmaVersion < 13 || this.type === types$1.parenL || kind !== "method" || isGenerator || isAsync) {
      var isConstructor = !node.static && checkKeyName(node, "constructor");
      var allowsDirectSuper = isConstructor && constructorAllowsSuper;
      // Couldn't move this check into the 'parseClassMethod' method for backward compatibility.
      if (isConstructor && kind !== "method") { this.raise(node.key.start, "Constructor can't have get/set modifier"); }
      node.kind = isConstructor ? "constructor" : kind;
      this.parseClassMethod(node, isGenerator, isAsync, allowsDirectSuper);
    } else {
      this.parseClassField(node);
    }

    return node
  };

  pp$8.isClassElementNameStart = function() {
    return (
      this.type === types$1.name ||
      this.type === types$1.privateId ||
      this.type === types$1.num ||
      this.type === types$1.string ||
      this.type === types$1.bracketL ||
      this.type.keyword
    )
  };

  pp$8.parseClassElementName = function(element) {
    if (this.type === types$1.privateId) {
      if (this.value === "constructor") {
        this.raise(this.start, "Classes can't have an element named '#constructor'");
      }
      element.computed = false;
      element.key = this.parsePrivateIdent();
    } else {
      this.parsePropertyName(element);
    }
  };

  pp$8.parseClassMethod = function(method, isGenerator, isAsync, allowsDirectSuper) {
    // Check key and flags
    var key = method.key;
    if (method.kind === "constructor") {
      if (isGenerator) { this.raise(key.start, "Constructor can't be a generator"); }
      if (isAsync) { this.raise(key.start, "Constructor can't be an async method"); }
    } else if (method.static && checkKeyName(method, "prototype")) {
      this.raise(key.start, "Classes may not have a static property named prototype");
    }

    // Parse value
    var value = method.value = this.parseMethod(isGenerator, isAsync, allowsDirectSuper);

    // Check value
    if (method.kind === "get" && value.params.length !== 0)
      { this.raiseRecoverable(value.start, "getter should have no params"); }
    if (method.kind === "set" && value.params.length !== 1)
      { this.raiseRecoverable(value.start, "setter should have exactly one param"); }
    if (method.kind === "set" && value.params[0].type === "RestElement")
      { this.raiseRecoverable(value.params[0].start, "Setter cannot use rest params"); }

    return this.finishNode(method, "MethodDefinition")
  };

  pp$8.parseClassField = function(field) {
    if (checkKeyName(field, "constructor")) {
      this.raise(field.key.start, "Classes can't have a field named 'constructor'");
    } else if (field.static && checkKeyName(field, "prototype")) {
      this.raise(field.key.start, "Classes can't have a static field named 'prototype'");
    }

    if (this.eat(types$1.eq)) {
      // To raise SyntaxError if 'arguments' exists in the initializer.
      var scope = this.currentThisScope();
      var inClassFieldInit = scope.inClassFieldInit;
      scope.inClassFieldInit = true;
      field.value = this.parseMaybeAssign();
      scope.inClassFieldInit = inClassFieldInit;
    } else {
      field.value = null;
    }
    this.semicolon();

    return this.finishNode(field, "PropertyDefinition")
  };

  pp$8.parseClassStaticBlock = function(node) {
    node.body = [];

    var oldLabels = this.labels;
    this.labels = [];
    this.enterScope(SCOPE_CLASS_STATIC_BLOCK | SCOPE_SUPER);
    while (this.type !== types$1.braceR) {
      var stmt = this.parseStatement(null);
      node.body.push(stmt);
    }
    this.next();
    this.exitScope();
    this.labels = oldLabels;

    return this.finishNode(node, "StaticBlock")
  };

  pp$8.parseClassId = function(node, isStatement) {
    if (this.type === types$1.name) {
      node.id = this.parseIdent();
      if (isStatement)
        { this.checkLValSimple(node.id, BIND_LEXICAL, false); }
    } else {
      if (isStatement === true)
        { this.unexpected(); }
      node.id = null;
    }
  };

  pp$8.parseClassSuper = function(node) {
    node.superClass = this.eat(types$1._extends) ? this.parseExprSubscripts(false) : null;
  };

  pp$8.enterClassBody = function() {
    var element = {declared: Object.create(null), used: []};
    this.privateNameStack.push(element);
    return element.declared
  };

  pp$8.exitClassBody = function() {
    var ref = this.privateNameStack.pop();
    var declared = ref.declared;
    var used = ref.used;
    var len = this.privateNameStack.length;
    var parent = len === 0 ? null : this.privateNameStack[len - 1];
    for (var i = 0; i < used.length; ++i) {
      var id = used[i];
      if (!hasOwn(declared, id.name)) {
        if (parent) {
          parent.used.push(id);
        } else {
          this.raiseRecoverable(id.start, ("Private field '#" + (id.name) + "' must be declared in an enclosing class"));
        }
      }
    }
  };

  function isPrivateNameConflicted(privateNameMap, element) {
    var name = element.key.name;
    var curr = privateNameMap[name];

    var next = "true";
    if (element.type === "MethodDefinition" && (element.kind === "get" || element.kind === "set")) {
      next = (element.static ? "s" : "i") + element.kind;
    }

    // `class { get #a(){}; static set #a(_){} }` is also conflict.
    if (
      curr === "iget" && next === "iset" ||
      curr === "iset" && next === "iget" ||
      curr === "sget" && next === "sset" ||
      curr === "sset" && next === "sget"
    ) {
      privateNameMap[name] = "true";
      return false
    } else if (!curr) {
      privateNameMap[name] = next;
      return false
    } else {
      return true
    }
  }

  function checkKeyName(node, name) {
    var computed = node.computed;
    var key = node.key;
    return !computed && (
      key.type === "Identifier" && key.name === name ||
      key.type === "Literal" && key.value === name
    )
  }

  // Parses module export declaration.

  pp$8.parseExport = function(node, exports) {
    this.next();
    // export * from '...'
    if (this.eat(types$1.star)) {
      if (this.options.ecmaVersion >= 11) {
        if (this.eatContextual("as")) {
          node.exported = this.parseModuleExportName();
          this.checkExport(exports, node.exported.name, this.lastTokStart);
        } else {
          node.exported = null;
        }
      }
      this.expectContextual("from");
      if (this.type !== types$1.string) { this.unexpected(); }
      node.source = this.parseExprAtom();
      this.semicolon();
      return this.finishNode(node, "ExportAllDeclaration")
    }
    if (this.eat(types$1._default)) { // export default ...
      this.checkExport(exports, "default", this.lastTokStart);
      var isAsync;
      if (this.type === types$1._function || (isAsync = this.isAsyncFunction())) {
        var fNode = this.startNode();
        this.next();
        if (isAsync) { this.next(); }
        node.declaration = this.parseFunction(fNode, FUNC_STATEMENT | FUNC_NULLABLE_ID, false, isAsync);
      } else if (this.type === types$1._class) {
        var cNode = this.startNode();
        node.declaration = this.parseClass(cNode, "nullableID");
      } else {
        node.declaration = this.parseMaybeAssign();
        this.semicolon();
      }
      return this.finishNode(node, "ExportDefaultDeclaration")
    }
    // export var|const|let|function|class ...
    if (this.shouldParseExportStatement()) {
      node.declaration = this.parseStatement(null);
      if (node.declaration.type === "VariableDeclaration")
        { this.checkVariableExport(exports, node.declaration.declarations); }
      else
        { this.checkExport(exports, node.declaration.id.name, node.declaration.id.start); }
      node.specifiers = [];
      node.source = null;
    } else { // export { x, y as z } [from '...']
      node.declaration = null;
      node.specifiers = this.parseExportSpecifiers(exports);
      if (this.eatContextual("from")) {
        if (this.type !== types$1.string) { this.unexpected(); }
        node.source = this.parseExprAtom();
      } else {
        for (var i = 0, list = node.specifiers; i < list.length; i += 1) {
          // check for keywords used as local names
          var spec = list[i];

          this.checkUnreserved(spec.local);
          // check if export is defined
          this.checkLocalExport(spec.local);

          if (spec.local.type === "Literal") {
            this.raise(spec.local.start, "A string literal cannot be used as an exported binding without `from`.");
          }
        }

        node.source = null;
      }
      this.semicolon();
    }
    return this.finishNode(node, "ExportNamedDeclaration")
  };

  pp$8.checkExport = function(exports, name, pos) {
    if (!exports) { return }
    if (hasOwn(exports, name))
      { this.raiseRecoverable(pos, "Duplicate export '" + name + "'"); }
    exports[name] = true;
  };

  pp$8.checkPatternExport = function(exports, pat) {
    var type = pat.type;
    if (type === "Identifier")
      { this.checkExport(exports, pat.name, pat.start); }
    else if (type === "ObjectPattern")
      { for (var i = 0, list = pat.properties; i < list.length; i += 1)
        {
          var prop = list[i];

          this.checkPatternExport(exports, prop);
        } }
    else if (type === "ArrayPattern")
      { for (var i$1 = 0, list$1 = pat.elements; i$1 < list$1.length; i$1 += 1) {
        var elt = list$1[i$1];

          if (elt) { this.checkPatternExport(exports, elt); }
      } }
    else if (type === "Property")
      { this.checkPatternExport(exports, pat.value); }
    else if (type === "AssignmentPattern")
      { this.checkPatternExport(exports, pat.left); }
    else if (type === "RestElement")
      { this.checkPatternExport(exports, pat.argument); }
    else if (type === "ParenthesizedExpression")
      { this.checkPatternExport(exports, pat.expression); }
  };

  pp$8.checkVariableExport = function(exports, decls) {
    if (!exports) { return }
    for (var i = 0, list = decls; i < list.length; i += 1)
      {
      var decl = list[i];

      this.checkPatternExport(exports, decl.id);
    }
  };

  pp$8.shouldParseExportStatement = function() {
    return this.type.keyword === "var" ||
      this.type.keyword === "const" ||
      this.type.keyword === "class" ||
      this.type.keyword === "function" ||
      this.isLet() ||
      this.isAsyncFunction()
  };

  // Parses a comma-separated list of module exports.

  pp$8.parseExportSpecifiers = function(exports) {
    var nodes = [], first = true;
    // export { x, y as z } [from '...']
    this.expect(types$1.braceL);
    while (!this.eat(types$1.braceR)) {
      if (!first) {
        this.expect(types$1.comma);
        if (this.afterTrailingComma(types$1.braceR)) { break }
      } else { first = false; }

      var node = this.startNode();
      node.local = this.parseModuleExportName();
      node.exported = this.eatContextual("as") ? this.parseModuleExportName() : node.local;
      this.checkExport(
        exports,
        node.exported[node.exported.type === "Identifier" ? "name" : "value"],
        node.exported.start
      );
      nodes.push(this.finishNode(node, "ExportSpecifier"));
    }
    return nodes
  };

  // Parses import declaration.

  pp$8.parseImport = function(node) {
    this.next();
    // import '...'
    if (this.type === types$1.string) {
      node.specifiers = empty$1;
      node.source = this.parseExprAtom();
    } else {
      node.specifiers = this.parseImportSpecifiers();
      this.expectContextual("from");
      node.source = this.type === types$1.string ? this.parseExprAtom() : this.unexpected();
    }
    this.semicolon();
    return this.finishNode(node, "ImportDeclaration")
  };

  // Parses a comma-separated list of module imports.

  pp$8.parseImportSpecifiers = function() {
    var nodes = [], first = true;
    if (this.type === types$1.name) {
      // import defaultObj, { x, y as z } from '...'
      var node = this.startNode();
      node.local = this.parseIdent();
      this.checkLValSimple(node.local, BIND_LEXICAL);
      nodes.push(this.finishNode(node, "ImportDefaultSpecifier"));
      if (!this.eat(types$1.comma)) { return nodes }
    }
    if (this.type === types$1.star) {
      var node$1 = this.startNode();
      this.next();
      this.expectContextual("as");
      node$1.local = this.parseIdent();
      this.checkLValSimple(node$1.local, BIND_LEXICAL);
      nodes.push(this.finishNode(node$1, "ImportNamespaceSpecifier"));
      return nodes
    }
    this.expect(types$1.braceL);
    while (!this.eat(types$1.braceR)) {
      if (!first) {
        this.expect(types$1.comma);
        if (this.afterTrailingComma(types$1.braceR)) { break }
      } else { first = false; }

      var node$2 = this.startNode();
      node$2.imported = this.parseModuleExportName();
      if (this.eatContextual("as")) {
        node$2.local = this.parseIdent();
      } else {
        this.checkUnreserved(node$2.imported);
        node$2.local = node$2.imported;
      }
      this.checkLValSimple(node$2.local, BIND_LEXICAL);
      nodes.push(this.finishNode(node$2, "ImportSpecifier"));
    }
    return nodes
  };

  pp$8.parseModuleExportName = function() {
    if (this.options.ecmaVersion >= 13 && this.type === types$1.string) {
      var stringLiteral = this.parseLiteral(this.value);
      if (loneSurrogate.test(stringLiteral.value)) {
        this.raise(stringLiteral.start, "An export name cannot include a lone surrogate.");
      }
      return stringLiteral
    }
    return this.parseIdent(true)
  };

  // Set `ExpressionStatement#directive` property for directive prologues.
  pp$8.adaptDirectivePrologue = function(statements) {
    for (var i = 0; i < statements.length && this.isDirectiveCandidate(statements[i]); ++i) {
      statements[i].directive = statements[i].expression.raw.slice(1, -1);
    }
  };
  pp$8.isDirectiveCandidate = function(statement) {
    return (
      statement.type === "ExpressionStatement" &&
      statement.expression.type === "Literal" &&
      typeof statement.expression.value === "string" &&
      // Reject parenthesized strings.
      (this.input[statement.start] === "\"" || this.input[statement.start] === "'")
    )
  };

  var pp$7 = Parser.prototype;

  // Convert existing expression atom to assignable pattern
  // if possible.

  pp$7.toAssignable = function(node, isBinding, refDestructuringErrors) {
    if (this.options.ecmaVersion >= 6 && node) {
      switch (node.type) {
      case "Identifier":
        if (this.inAsync && node.name === "await")
          { this.raise(node.start, "Cannot use 'await' as identifier inside an async function"); }
        break

      case "ObjectPattern":
      case "ArrayPattern":
      case "AssignmentPattern":
      case "RestElement":
        break

      case "ObjectExpression":
        node.type = "ObjectPattern";
        if (refDestructuringErrors) { this.checkPatternErrors(refDestructuringErrors, true); }
        for (var i = 0, list = node.properties; i < list.length; i += 1) {
          var prop = list[i];

        this.toAssignable(prop, isBinding);
          // Early error:
          //   AssignmentRestProperty[Yield, Await] :
          //     `...` DestructuringAssignmentTarget[Yield, Await]
          //
          //   It is a Syntax Error if |DestructuringAssignmentTarget| is an |ArrayLiteral| or an |ObjectLiteral|.
          if (
            prop.type === "RestElement" &&
            (prop.argument.type === "ArrayPattern" || prop.argument.type === "ObjectPattern")
          ) {
            this.raise(prop.argument.start, "Unexpected token");
          }
        }
        break

      case "Property":
        // AssignmentProperty has type === "Property"
        if (node.kind !== "init") { this.raise(node.key.start, "Object pattern can't contain getter or setter"); }
        this.toAssignable(node.value, isBinding);
        break

      case "ArrayExpression":
        node.type = "ArrayPattern";
        if (refDestructuringErrors) { this.checkPatternErrors(refDestructuringErrors, true); }
        this.toAssignableList(node.elements, isBinding);
        break

      case "SpreadElement":
        node.type = "RestElement";
        this.toAssignable(node.argument, isBinding);
        if (node.argument.type === "AssignmentPattern")
          { this.raise(node.argument.start, "Rest elements cannot have a default value"); }
        break

      case "AssignmentExpression":
        if (node.operator !== "=") { this.raise(node.left.end, "Only '=' operator can be used for specifying default value."); }
        node.type = "AssignmentPattern";
        delete node.operator;
        this.toAssignable(node.left, isBinding);
        break

      case "ParenthesizedExpression":
        this.toAssignable(node.expression, isBinding, refDestructuringErrors);
        break

      case "ChainExpression":
        this.raiseRecoverable(node.start, "Optional chaining cannot appear in left-hand side");
        break

      case "MemberExpression":
        if (!isBinding) { break }

      default:
        this.raise(node.start, "Assigning to rvalue");
      }
    } else if (refDestructuringErrors) { this.checkPatternErrors(refDestructuringErrors, true); }
    return node
  };

  // Convert list of expression atoms to binding list.

  pp$7.toAssignableList = function(exprList, isBinding) {
    var end = exprList.length;
    for (var i = 0; i < end; i++) {
      var elt = exprList[i];
      if (elt) { this.toAssignable(elt, isBinding); }
    }
    if (end) {
      var last = exprList[end - 1];
      if (this.options.ecmaVersion === 6 && isBinding && last && last.type === "RestElement" && last.argument.type !== "Identifier")
        { this.unexpected(last.argument.start); }
    }
    return exprList
  };

  // Parses spread element.

  pp$7.parseSpread = function(refDestructuringErrors) {
    var node = this.startNode();
    this.next();
    node.argument = this.parseMaybeAssign(false, refDestructuringErrors);
    return this.finishNode(node, "SpreadElement")
  };

  pp$7.parseRestBinding = function() {
    var node = this.startNode();
    this.next();

    // RestElement inside of a function parameter must be an identifier
    if (this.options.ecmaVersion === 6 && this.type !== types$1.name)
      { this.unexpected(); }

    node.argument = this.parseBindingAtom();

    return this.finishNode(node, "RestElement")
  };

  // Parses lvalue (assignable) atom.

  pp$7.parseBindingAtom = function() {
    if (this.options.ecmaVersion >= 6) {
      switch (this.type) {
      case types$1.bracketL:
        var node = this.startNode();
        this.next();
        node.elements = this.parseBindingList(types$1.bracketR, true, true);
        return this.finishNode(node, "ArrayPattern")

      case types$1.braceL:
        return this.parseObj(true)
      }
    }
    return this.parseIdent()
  };

  pp$7.parseBindingList = function(close, allowEmpty, allowTrailingComma) {
    var elts = [], first = true;
    while (!this.eat(close)) {
      if (first) { first = false; }
      else { this.expect(types$1.comma); }
      if (allowEmpty && this.type === types$1.comma) {
        elts.push(null);
      } else if (allowTrailingComma && this.afterTrailingComma(close)) {
        break
      } else if (this.type === types$1.ellipsis) {
        var rest = this.parseRestBinding();
        this.parseBindingListItem(rest);
        elts.push(rest);
        if (this.type === types$1.comma) { this.raise(this.start, "Comma is not permitted after the rest element"); }
        this.expect(close);
        break
      } else {
        var elem = this.parseMaybeDefault(this.start, this.startLoc);
        this.parseBindingListItem(elem);
        elts.push(elem);
      }
    }
    return elts
  };

  pp$7.parseBindingListItem = function(param) {
    return param
  };

  // Parses assignment pattern around given atom if possible.

  pp$7.parseMaybeDefault = function(startPos, startLoc, left) {
    left = left || this.parseBindingAtom();
    if (this.options.ecmaVersion < 6 || !this.eat(types$1.eq)) { return left }
    var node = this.startNodeAt(startPos, startLoc);
    node.left = left;
    node.right = this.parseMaybeAssign();
    return this.finishNode(node, "AssignmentPattern")
  };

  // The following three functions all verify that a node is an lvalue —
  // something that can be bound, or assigned to. In order to do so, they perform
  // a variety of checks:
  //
  // - Check that none of the bound/assigned-to identifiers are reserved words.
  // - Record name declarations for bindings in the appropriate scope.
  // - Check duplicate argument names, if checkClashes is set.
  //
  // If a complex binding pattern is encountered (e.g., object and array
  // destructuring), the entire pattern is recursively checked.
  //
  // There are three versions of checkLVal*() appropriate for different
  // circumstances:
  //
  // - checkLValSimple() shall be used if the syntactic construct supports
  //   nothing other than identifiers and member expressions. Parenthesized
  //   expressions are also correctly handled. This is generally appropriate for
  //   constructs for which the spec says
  //
  //   > It is a Syntax Error if AssignmentTargetType of [the production] is not
  //   > simple.
  //
  //   It is also appropriate for checking if an identifier is valid and not
  //   defined elsewhere, like import declarations or function/class identifiers.
  //
  //   Examples where this is used include:
  //     a += …;
  //     import a from '…';
  //   where a is the node to be checked.
  //
  // - checkLValPattern() shall be used if the syntactic construct supports
  //   anything checkLValSimple() supports, as well as object and array
  //   destructuring patterns. This is generally appropriate for constructs for
  //   which the spec says
  //
  //   > It is a Syntax Error if [the production] is neither an ObjectLiteral nor
  //   > an ArrayLiteral and AssignmentTargetType of [the production] is not
  //   > simple.
  //
  //   Examples where this is used include:
  //     (a = …);
  //     const a = …;
  //     try { … } catch (a) { … }
  //   where a is the node to be checked.
  //
  // - checkLValInnerPattern() shall be used if the syntactic construct supports
  //   anything checkLValPattern() supports, as well as default assignment
  //   patterns, rest elements, and other constructs that may appear within an
  //   object or array destructuring pattern.
  //
  //   As a special case, function parameters also use checkLValInnerPattern(),
  //   as they also support defaults and rest constructs.
  //
  // These functions deliberately support both assignment and binding constructs,
  // as the logic for both is exceedingly similar. If the node is the target of
  // an assignment, then bindingType should be set to BIND_NONE. Otherwise, it
  // should be set to the appropriate BIND_* constant, like BIND_VAR or
  // BIND_LEXICAL.
  //
  // If the function is called with a non-BIND_NONE bindingType, then
  // additionally a checkClashes object may be specified to allow checking for
  // duplicate argument names. checkClashes is ignored if the provided construct
  // is an assignment (i.e., bindingType is BIND_NONE).

  pp$7.checkLValSimple = function(expr, bindingType, checkClashes) {
    if ( bindingType === void 0 ) bindingType = BIND_NONE;

    var isBind = bindingType !== BIND_NONE;

    switch (expr.type) {
    case "Identifier":
      if (this.strict && this.reservedWordsStrictBind.test(expr.name))
        { this.raiseRecoverable(expr.start, (isBind ? "Binding " : "Assigning to ") + expr.name + " in strict mode"); }
      if (isBind) {
        if (bindingType === BIND_LEXICAL && expr.name === "let")
          { this.raiseRecoverable(expr.start, "let is disallowed as a lexically bound name"); }
        if (checkClashes) {
          if (hasOwn(checkClashes, expr.name))
            { this.raiseRecoverable(expr.start, "Argument name clash"); }
          checkClashes[expr.name] = true;
        }
        if (bindingType !== BIND_OUTSIDE) { this.declareName(expr.name, bindingType, expr.start); }
      }
      break

    case "ChainExpression":
      this.raiseRecoverable(expr.start, "Optional chaining cannot appear in left-hand side");
      break

    case "MemberExpression":
      if (isBind) { this.raiseRecoverable(expr.start, "Binding member expression"); }
      break

    case "ParenthesizedExpression":
      if (isBind) { this.raiseRecoverable(expr.start, "Binding parenthesized expression"); }
      return this.checkLValSimple(expr.expression, bindingType, checkClashes)

    default:
      this.raise(expr.start, (isBind ? "Binding" : "Assigning to") + " rvalue");
    }
  };

  pp$7.checkLValPattern = function(expr, bindingType, checkClashes) {
    if ( bindingType === void 0 ) bindingType = BIND_NONE;

    switch (expr.type) {
    case "ObjectPattern":
      for (var i = 0, list = expr.properties; i < list.length; i += 1) {
        var prop = list[i];

      this.checkLValInnerPattern(prop, bindingType, checkClashes);
      }
      break

    case "ArrayPattern":
      for (var i$1 = 0, list$1 = expr.elements; i$1 < list$1.length; i$1 += 1) {
        var elem = list$1[i$1];

      if (elem) { this.checkLValInnerPattern(elem, bindingType, checkClashes); }
      }
      break

    default:
      this.checkLValSimple(expr, bindingType, checkClashes);
    }
  };

  pp$7.checkLValInnerPattern = function(expr, bindingType, checkClashes) {
    if ( bindingType === void 0 ) bindingType = BIND_NONE;

    switch (expr.type) {
    case "Property":
      // AssignmentProperty has type === "Property"
      this.checkLValInnerPattern(expr.value, bindingType, checkClashes);
      break

    case "AssignmentPattern":
      this.checkLValPattern(expr.left, bindingType, checkClashes);
      break

    case "RestElement":
      this.checkLValPattern(expr.argument, bindingType, checkClashes);
      break

    default:
      this.checkLValPattern(expr, bindingType, checkClashes);
    }
  };

  // The algorithm used to determine whether a regexp can appear at a

  var TokContext = function TokContext(token, isExpr, preserveSpace, override, generator) {
    this.token = token;
    this.isExpr = !!isExpr;
    this.preserveSpace = !!preserveSpace;
    this.override = override;
    this.generator = !!generator;
  };

  var types = {
    b_stat: new TokContext("{", false),
    b_expr: new TokContext("{", true),
    b_tmpl: new TokContext("${", false),
    p_stat: new TokContext("(", false),
    p_expr: new TokContext("(", true),
    q_tmpl: new TokContext("`", true, true, function (p) { return p.tryReadTemplateToken(); }),
    f_stat: new TokContext("function", false),
    f_expr: new TokContext("function", true),
    f_expr_gen: new TokContext("function", true, false, null, true),
    f_gen: new TokContext("function", false, false, null, true)
  };

  var pp$6 = Parser.prototype;

  pp$6.initialContext = function() {
    return [types.b_stat]
  };

  pp$6.curContext = function() {
    return this.context[this.context.length - 1]
  };

  pp$6.braceIsBlock = function(prevType) {
    var parent = this.curContext();
    if (parent === types.f_expr || parent === types.f_stat)
      { return true }
    if (prevType === types$1.colon && (parent === types.b_stat || parent === types.b_expr))
      { return !parent.isExpr }

    // The check for `tt.name && exprAllowed` detects whether we are
    // after a `yield` or `of` construct. See the `updateContext` for
    // `tt.name`.
    if (prevType === types$1._return || prevType === types$1.name && this.exprAllowed)
      { return lineBreak.test(this.input.slice(this.lastTokEnd, this.start)) }
    if (prevType === types$1._else || prevType === types$1.semi || prevType === types$1.eof || prevType === types$1.parenR || prevType === types$1.arrow)
      { return true }
    if (prevType === types$1.braceL)
      { return parent === types.b_stat }
    if (prevType === types$1._var || prevType === types$1._const || prevType === types$1.name)
      { return false }
    return !this.exprAllowed
  };

  pp$6.inGeneratorContext = function() {
    for (var i = this.context.length - 1; i >= 1; i--) {
      var context = this.context[i];
      if (context.token === "function")
        { return context.generator }
    }
    return false
  };

  pp$6.updateContext = function(prevType) {
    var update, type = this.type;
    if (type.keyword && prevType === types$1.dot)
      { this.exprAllowed = false; }
    else if (update = type.updateContext)
      { update.call(this, prevType); }
    else
      { this.exprAllowed = type.beforeExpr; }
  };

  // Used to handle egde case when token context could not be inferred correctly in tokenize phase
  pp$6.overrideContext = function(tokenCtx) {
    if (this.curContext() !== tokenCtx) {
      this.context[this.context.length - 1] = tokenCtx;
    }
  };

  // Token-specific context update code

  types$1.parenR.updateContext = types$1.braceR.updateContext = function() {
    if (this.context.length === 1) {
      this.exprAllowed = true;
      return
    }
    var out = this.context.pop();
    if (out === types.b_stat && this.curContext().token === "function") {
      out = this.context.pop();
    }
    this.exprAllowed = !out.isExpr;
  };

  types$1.braceL.updateContext = function(prevType) {
    this.context.push(this.braceIsBlock(prevType) ? types.b_stat : types.b_expr);
    this.exprAllowed = true;
  };

  types$1.dollarBraceL.updateContext = function() {
    this.context.push(types.b_tmpl);
    this.exprAllowed = true;
  };

  types$1.parenL.updateContext = function(prevType) {
    var statementParens = prevType === types$1._if || prevType === types$1._for || prevType === types$1._with || prevType === types$1._while;
    this.context.push(statementParens ? types.p_stat : types.p_expr);
    this.exprAllowed = true;
  };

  types$1.incDec.updateContext = function() {
    // tokExprAllowed stays unchanged
  };

  types$1._function.updateContext = types$1._class.updateContext = function(prevType) {
    if (prevType.beforeExpr && prevType !== types$1._else &&
        !(prevType === types$1.semi && this.curContext() !== types.p_stat) &&
        !(prevType === types$1._return && lineBreak.test(this.input.slice(this.lastTokEnd, this.start))) &&
        !((prevType === types$1.colon || prevType === types$1.braceL) && this.curContext() === types.b_stat))
      { this.context.push(types.f_expr); }
    else
      { this.context.push(types.f_stat); }
    this.exprAllowed = false;
  };

  types$1.backQuote.updateContext = function() {
    if (this.curContext() === types.q_tmpl)
      { this.context.pop(); }
    else
      { this.context.push(types.q_tmpl); }
    this.exprAllowed = false;
  };

  types$1.star.updateContext = function(prevType) {
    if (prevType === types$1._function) {
      var index = this.context.length - 1;
      if (this.context[index] === types.f_expr)
        { this.context[index] = types.f_expr_gen; }
      else
        { this.context[index] = types.f_gen; }
    }
    this.exprAllowed = true;
  };

  types$1.name.updateContext = function(prevType) {
    var allowed = false;
    if (this.options.ecmaVersion >= 6 && prevType !== types$1.dot) {
      if (this.value === "of" && !this.exprAllowed ||
          this.value === "yield" && this.inGeneratorContext())
        { allowed = true; }
    }
    this.exprAllowed = allowed;
  };

  // A recursive descent parser operates by defining functions for all

  var pp$5 = Parser.prototype;

  // Check if property name clashes with already added.
  // Object/class getters and setters are not allowed to clash —
  // either with each other or with an init property — and in
  // strict mode, init properties are also not allowed to be repeated.

  pp$5.checkPropClash = function(prop, propHash, refDestructuringErrors) {
    if (this.options.ecmaVersion >= 9 && prop.type === "SpreadElement")
      { return }
    if (this.options.ecmaVersion >= 6 && (prop.computed || prop.method || prop.shorthand))
      { return }
    var key = prop.key;
    var name;
    switch (key.type) {
    case "Identifier": name = key.name; break
    case "Literal": name = String(key.value); break
    default: return
    }
    var kind = prop.kind;
    if (this.options.ecmaVersion >= 6) {
      if (name === "__proto__" && kind === "init") {
        if (propHash.proto) {
          if (refDestructuringErrors) {
            if (refDestructuringErrors.doubleProto < 0) {
              refDestructuringErrors.doubleProto = key.start;
            }
          } else {
            this.raiseRecoverable(key.start, "Redefinition of __proto__ property");
          }
        }
        propHash.proto = true;
      }
      return
    }
    name = "$" + name;
    var other = propHash[name];
    if (other) {
      var redefinition;
      if (kind === "init") {
        redefinition = this.strict && other.init || other.get || other.set;
      } else {
        redefinition = other.init || other[kind];
      }
      if (redefinition)
        { this.raiseRecoverable(key.start, "Redefinition of property"); }
    } else {
      other = propHash[name] = {
        init: false,
        get: false,
        set: false
      };
    }
    other[kind] = true;
  };

  // ### Expression parsing

  // These nest, from the most general expression type at the top to
  // 'atomic', nondivisible expression types at the bottom. Most of
  // the functions will simply let the function(s) below them parse,
  // and, *if* the syntactic construct they handle is present, wrap
  // the AST node that the inner parser gave them in another node.

  // Parse a full expression. The optional arguments are used to
  // forbid the `in` operator (in for loops initalization expressions)
  // and provide reference for storing '=' operator inside shorthand
  // property assignment in contexts where both object expression
  // and object pattern might appear (so it's possible to raise
  // delayed syntax error at correct position).

  pp$5.parseExpression = function(forInit, refDestructuringErrors) {
    var startPos = this.start, startLoc = this.startLoc;
    var expr = this.parseMaybeAssign(forInit, refDestructuringErrors);
    if (this.type === types$1.comma) {
      var node = this.startNodeAt(startPos, startLoc);
      node.expressions = [expr];
      while (this.eat(types$1.comma)) { node.expressions.push(this.parseMaybeAssign(forInit, refDestructuringErrors)); }
      return this.finishNode(node, "SequenceExpression")
    }
    return expr
  };

  // Parse an assignment expression. This includes applications of
  // operators like `+=`.

  pp$5.parseMaybeAssign = function(forInit, refDestructuringErrors, afterLeftParse) {
    if (this.isContextual("yield")) {
      if (this.inGenerator) { return this.parseYield(forInit) }
      // The tokenizer will assume an expression is allowed after
      // `yield`, but this isn't that kind of yield
      else { this.exprAllowed = false; }
    }

    var ownDestructuringErrors = false, oldParenAssign = -1, oldTrailingComma = -1, oldDoubleProto = -1;
    if (refDestructuringErrors) {
      oldParenAssign = refDestructuringErrors.parenthesizedAssign;
      oldTrailingComma = refDestructuringErrors.trailingComma;
      oldDoubleProto = refDestructuringErrors.doubleProto;
      refDestructuringErrors.parenthesizedAssign = refDestructuringErrors.trailingComma = -1;
    } else {
      refDestructuringErrors = new DestructuringErrors;
      ownDestructuringErrors = true;
    }

    var startPos = this.start, startLoc = this.startLoc;
    if (this.type === types$1.parenL || this.type === types$1.name) {
      this.potentialArrowAt = this.start;
      this.potentialArrowInForAwait = forInit === "await";
    }
    var left = this.parseMaybeConditional(forInit, refDestructuringErrors);
    if (afterLeftParse) { left = afterLeftParse.call(this, left, startPos, startLoc); }
    if (this.type.isAssign) {
      var node = this.startNodeAt(startPos, startLoc);
      node.operator = this.value;
      if (this.type === types$1.eq)
        { left = this.toAssignable(left, false, refDestructuringErrors); }
      if (!ownDestructuringErrors) {
        refDestructuringErrors.parenthesizedAssign = refDestructuringErrors.trailingComma = refDestructuringErrors.doubleProto = -1;
      }
      if (refDestructuringErrors.shorthandAssign >= left.start)
        { refDestructuringErrors.shorthandAssign = -1; } // reset because shorthand default was used correctly
      if (this.type === types$1.eq)
        { this.checkLValPattern(left); }
      else
        { this.checkLValSimple(left); }
      node.left = left;
      this.next();
      node.right = this.parseMaybeAssign(forInit);
      if (oldDoubleProto > -1) { refDestructuringErrors.doubleProto = oldDoubleProto; }
      return this.finishNode(node, "AssignmentExpression")
    } else {
      if (ownDestructuringErrors) { this.checkExpressionErrors(refDestructuringErrors, true); }
    }
    if (oldParenAssign > -1) { refDestructuringErrors.parenthesizedAssign = oldParenAssign; }
    if (oldTrailingComma > -1) { refDestructuringErrors.trailingComma = oldTrailingComma; }
    return left
  };

  // Parse a ternary conditional (`?:`) operator.

  pp$5.parseMaybeConditional = function(forInit, refDestructuringErrors) {
    var startPos = this.start, startLoc = this.startLoc;
    var expr = this.parseExprOps(forInit, refDestructuringErrors);
    if (this.checkExpressionErrors(refDestructuringErrors)) { return expr }
    if (this.eat(types$1.question)) {
      var node = this.startNodeAt(startPos, startLoc);
      node.test = expr;
      node.consequent = this.parseMaybeAssign();
      this.expect(types$1.colon);
      node.alternate = this.parseMaybeAssign(forInit);
      return this.finishNode(node, "ConditionalExpression")
    }
    return expr
  };

  // Start the precedence parser.

  pp$5.parseExprOps = function(forInit, refDestructuringErrors) {
    var startPos = this.start, startLoc = this.startLoc;
    var expr = this.parseMaybeUnary(refDestructuringErrors, false, false, forInit);
    if (this.checkExpressionErrors(refDestructuringErrors)) { return expr }
    return expr.start === startPos && expr.type === "ArrowFunctionExpression" ? expr : this.parseExprOp(expr, startPos, startLoc, -1, forInit)
  };

  // Parse binary operators with the operator precedence parsing
  // algorithm. `left` is the left-hand side of the operator.
  // `minPrec` provides context that allows the function to stop and
  // defer further parser to one of its callers when it encounters an
  // operator that has a lower precedence than the set it is parsing.

  pp$5.parseExprOp = function(left, leftStartPos, leftStartLoc, minPrec, forInit) {
    var prec = this.type.binop;
    if (prec != null && (!forInit || this.type !== types$1._in)) {
      if (prec > minPrec) {
        var logical = this.type === types$1.logicalOR || this.type === types$1.logicalAND;
        var coalesce = this.type === types$1.coalesce;
        if (coalesce) {
          // Handle the precedence of `tt.coalesce` as equal to the range of logical expressions.
          // In other words, `node.right` shouldn't contain logical expressions in order to check the mixed error.
          prec = types$1.logicalAND.binop;
        }
        var op = this.value;
        this.next();
        var startPos = this.start, startLoc = this.startLoc;
        var right = this.parseExprOp(this.parseMaybeUnary(null, false, false, forInit), startPos, startLoc, prec, forInit);
        var node = this.buildBinary(leftStartPos, leftStartLoc, left, right, op, logical || coalesce);
        if ((logical && this.type === types$1.coalesce) || (coalesce && (this.type === types$1.logicalOR || this.type === types$1.logicalAND))) {
          this.raiseRecoverable(this.start, "Logical expressions and coalesce expressions cannot be mixed. Wrap either by parentheses");
        }
        return this.parseExprOp(node, leftStartPos, leftStartLoc, minPrec, forInit)
      }
    }
    return left
  };

  pp$5.buildBinary = function(startPos, startLoc, left, right, op, logical) {
    if (right.type === "PrivateIdentifier") { this.raise(right.start, "Private identifier can only be left side of binary expression"); }
    var node = this.startNodeAt(startPos, startLoc);
    node.left = left;
    node.operator = op;
    node.right = right;
    return this.finishNode(node, logical ? "LogicalExpression" : "BinaryExpression")
  };

  // Parse unary operators, both prefix and postfix.

  pp$5.parseMaybeUnary = function(refDestructuringErrors, sawUnary, incDec, forInit) {
    var startPos = this.start, startLoc = this.startLoc, expr;
    if (this.isContextual("await") && this.canAwait) {
      expr = this.parseAwait(forInit);
      sawUnary = true;
    } else if (this.type.prefix) {
      var node = this.startNode(), update = this.type === types$1.incDec;
      node.operator = this.value;
      node.prefix = true;
      this.next();
      node.argument = this.parseMaybeUnary(null, true, update, forInit);
      this.checkExpressionErrors(refDestructuringErrors, true);
      if (update) { this.checkLValSimple(node.argument); }
      else if (this.strict && node.operator === "delete" &&
               node.argument.type === "Identifier")
        { this.raiseRecoverable(node.start, "Deleting local variable in strict mode"); }
      else if (node.operator === "delete" && isPrivateFieldAccess(node.argument))
        { this.raiseRecoverable(node.start, "Private fields can not be deleted"); }
      else { sawUnary = true; }
      expr = this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression");
    } else if (!sawUnary && this.type === types$1.privateId) {
      if (forInit || this.privateNameStack.length === 0) { this.unexpected(); }
      expr = this.parsePrivateIdent();
      // only could be private fields in 'in', such as #x in obj
      if (this.type !== types$1._in) { this.unexpected(); }
    } else {
      expr = this.parseExprSubscripts(refDestructuringErrors, forInit);
      if (this.checkExpressionErrors(refDestructuringErrors)) { return expr }
      while (this.type.postfix && !this.canInsertSemicolon()) {
        var node$1 = this.startNodeAt(startPos, startLoc);
        node$1.operator = this.value;
        node$1.prefix = false;
        node$1.argument = expr;
        this.checkLValSimple(expr);
        this.next();
        expr = this.finishNode(node$1, "UpdateExpression");
      }
    }

    if (!incDec && this.eat(types$1.starstar)) {
      if (sawUnary)
        { this.unexpected(this.lastTokStart); }
      else
        { return this.buildBinary(startPos, startLoc, expr, this.parseMaybeUnary(null, false, false, forInit), "**", false) }
    } else {
      return expr
    }
  };

  function isPrivateFieldAccess(node) {
    return (
      node.type === "MemberExpression" && node.property.type === "PrivateIdentifier" ||
      node.type === "ChainExpression" && isPrivateFieldAccess(node.expression)
    )
  }

  // Parse call, dot, and `[]`-subscript expressions.

  pp$5.parseExprSubscripts = function(refDestructuringErrors, forInit) {
    var startPos = this.start, startLoc = this.startLoc;
    var expr = this.parseExprAtom(refDestructuringErrors, forInit);
    if (expr.type === "ArrowFunctionExpression" && this.input.slice(this.lastTokStart, this.lastTokEnd) !== ")")
      { return expr }
    var result = this.parseSubscripts(expr, startPos, startLoc, false, forInit);
    if (refDestructuringErrors && result.type === "MemberExpression") {
      if (refDestructuringErrors.parenthesizedAssign >= result.start) { refDestructuringErrors.parenthesizedAssign = -1; }
      if (refDestructuringErrors.parenthesizedBind >= result.start) { refDestructuringErrors.parenthesizedBind = -1; }
      if (refDestructuringErrors.trailingComma >= result.start) { refDestructuringErrors.trailingComma = -1; }
    }
    return result
  };

  pp$5.parseSubscripts = function(base, startPos, startLoc, noCalls, forInit) {
    var maybeAsyncArrow = this.options.ecmaVersion >= 8 && base.type === "Identifier" && base.name === "async" &&
        this.lastTokEnd === base.end && !this.canInsertSemicolon() && base.end - base.start === 5 &&
        this.potentialArrowAt === base.start;
    var optionalChained = false;

    while (true) {
      var element = this.parseSubscript(base, startPos, startLoc, noCalls, maybeAsyncArrow, optionalChained, forInit);

      if (element.optional) { optionalChained = true; }
      if (element === base || element.type === "ArrowFunctionExpression") {
        if (optionalChained) {
          var chainNode = this.startNodeAt(startPos, startLoc);
          chainNode.expression = element;
          element = this.finishNode(chainNode, "ChainExpression");
        }
        return element
      }

      base = element;
    }
  };

  pp$5.parseSubscript = function(base, startPos, startLoc, noCalls, maybeAsyncArrow, optionalChained, forInit) {
    var optionalSupported = this.options.ecmaVersion >= 11;
    var optional = optionalSupported && this.eat(types$1.questionDot);
    if (noCalls && optional) { this.raise(this.lastTokStart, "Optional chaining cannot appear in the callee of new expressions"); }

    var computed = this.eat(types$1.bracketL);
    if (computed || (optional && this.type !== types$1.parenL && this.type !== types$1.backQuote) || this.eat(types$1.dot)) {
      var node = this.startNodeAt(startPos, startLoc);
      node.object = base;
      if (computed) {
        node.property = this.parseExpression();
        this.expect(types$1.bracketR);
      } else if (this.type === types$1.privateId && base.type !== "Super") {
        node.property = this.parsePrivateIdent();
      } else {
        node.property = this.parseIdent(this.options.allowReserved !== "never");
      }
      node.computed = !!computed;
      if (optionalSupported) {
        node.optional = optional;
      }
      base = this.finishNode(node, "MemberExpression");
    } else if (!noCalls && this.eat(types$1.parenL)) {
      var refDestructuringErrors = new DestructuringErrors, oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, oldAwaitIdentPos = this.awaitIdentPos;
      this.yieldPos = 0;
      this.awaitPos = 0;
      this.awaitIdentPos = 0;
      var exprList = this.parseExprList(types$1.parenR, this.options.ecmaVersion >= 8, false, refDestructuringErrors);
      if (maybeAsyncArrow && !optional && !this.canInsertSemicolon() && this.eat(types$1.arrow)) {
        this.checkPatternErrors(refDestructuringErrors, false);
        this.checkYieldAwaitInDefaultParams();
        if (this.awaitIdentPos > 0)
          { this.raise(this.awaitIdentPos, "Cannot use 'await' as identifier inside an async function"); }
        this.yieldPos = oldYieldPos;
        this.awaitPos = oldAwaitPos;
        this.awaitIdentPos = oldAwaitIdentPos;
        return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), exprList, true, forInit)
      }
      this.checkExpressionErrors(refDestructuringErrors, true);
      this.yieldPos = oldYieldPos || this.yieldPos;
      this.awaitPos = oldAwaitPos || this.awaitPos;
      this.awaitIdentPos = oldAwaitIdentPos || this.awaitIdentPos;
      var node$1 = this.startNodeAt(startPos, startLoc);
      node$1.callee = base;
      node$1.arguments = exprList;
      if (optionalSupported) {
        node$1.optional = optional;
      }
      base = this.finishNode(node$1, "CallExpression");
    } else if (this.type === types$1.backQuote) {
      if (optional || optionalChained) {
        this.raise(this.start, "Optional chaining cannot appear in the tag of tagged template expressions");
      }
      var node$2 = this.startNodeAt(startPos, startLoc);
      node$2.tag = base;
      node$2.quasi = this.parseTemplate({isTagged: true});
      base = this.finishNode(node$2, "TaggedTemplateExpression");
    }
    return base
  };

  // Parse an atomic expression — either a single token that is an
  // expression, an expression started by a keyword like `function` or
  // `new`, or an expression wrapped in punctuation like `()`, `[]`,
  // or `{}`.

  pp$5.parseExprAtom = function(refDestructuringErrors, forInit) {
    // If a division operator appears in an expression position, the
    // tokenizer got confused, and we force it to read a regexp instead.
    if (this.type === types$1.slash) { this.readRegexp(); }

    var node, canBeArrow = this.potentialArrowAt === this.start;
    switch (this.type) {
    case types$1._super:
      if (!this.allowSuper)
        { this.raise(this.start, "'super' keyword outside a method"); }
      node = this.startNode();
      this.next();
      if (this.type === types$1.parenL && !this.allowDirectSuper)
        { this.raise(node.start, "super() call outside constructor of a subclass"); }
      // The `super` keyword can appear at below:
      // SuperProperty:
      //     super [ Expression ]
      //     super . IdentifierName
      // SuperCall:
      //     super ( Arguments )
      if (this.type !== types$1.dot && this.type !== types$1.bracketL && this.type !== types$1.parenL)
        { this.unexpected(); }
      return this.finishNode(node, "Super")

    case types$1._this:
      node = this.startNode();
      this.next();
      return this.finishNode(node, "ThisExpression")

    case types$1.name:
      var startPos = this.start, startLoc = this.startLoc, containsEsc = this.containsEsc;
      var id = this.parseIdent(false);
      if (this.options.ecmaVersion >= 8 && !containsEsc && id.name === "async" && !this.canInsertSemicolon() && this.eat(types$1._function)) {
        this.overrideContext(types.f_expr);
        return this.parseFunction(this.startNodeAt(startPos, startLoc), 0, false, true, forInit)
      }
      if (canBeArrow && !this.canInsertSemicolon()) {
        if (this.eat(types$1.arrow))
          { return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), [id], false, forInit) }
        if (this.options.ecmaVersion >= 8 && id.name === "async" && this.type === types$1.name && !containsEsc &&
            (!this.potentialArrowInForAwait || this.value !== "of" || this.containsEsc)) {
          id = this.parseIdent(false);
          if (this.canInsertSemicolon() || !this.eat(types$1.arrow))
            { this.unexpected(); }
          return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), [id], true, forInit)
        }
      }
      return id

    case types$1.regexp:
      var value = this.value;
      node = this.parseLiteral(value.value);
      node.regex = {pattern: value.pattern, flags: value.flags};
      return node

    case types$1.num: case types$1.string:
      return this.parseLiteral(this.value)

    case types$1._null: case types$1._true: case types$1._false:
      node = this.startNode();
      node.value = this.type === types$1._null ? null : this.type === types$1._true;
      node.raw = this.type.keyword;
      this.next();
      return this.finishNode(node, "Literal")

    case types$1.parenL:
      var start = this.start, expr = this.parseParenAndDistinguishExpression(canBeArrow, forInit);
      if (refDestructuringErrors) {
        if (refDestructuringErrors.parenthesizedAssign < 0 && !this.isSimpleAssignTarget(expr))
          { refDestructuringErrors.parenthesizedAssign = start; }
        if (refDestructuringErrors.parenthesizedBind < 0)
          { refDestructuringErrors.parenthesizedBind = start; }
      }
      return expr

    case types$1.bracketL:
      node = this.startNode();
      this.next();
      node.elements = this.parseExprList(types$1.bracketR, true, true, refDestructuringErrors);
      return this.finishNode(node, "ArrayExpression")

    case types$1.braceL:
      this.overrideContext(types.b_expr);
      return this.parseObj(false, refDestructuringErrors)

    case types$1._function:
      node = this.startNode();
      this.next();
      return this.parseFunction(node, 0)

    case types$1._class:
      return this.parseClass(this.startNode(), false)

    case types$1._new:
      return this.parseNew()

    case types$1.backQuote:
      return this.parseTemplate()

    case types$1._import:
      if (this.options.ecmaVersion >= 11) {
        return this.parseExprImport()
      } else {
        return this.unexpected()
      }

    default:
      this.unexpected();
    }
  };

  pp$5.parseExprImport = function() {
    var node = this.startNode();

    // Consume `import` as an identifier for `import.meta`.
    // Because `this.parseIdent(true)` doesn't check escape sequences, it needs the check of `this.containsEsc`.
    if (this.containsEsc) { this.raiseRecoverable(this.start, "Escape sequence in keyword import"); }
    var meta = this.parseIdent(true);

    switch (this.type) {
    case types$1.parenL:
      return this.parseDynamicImport(node)
    case types$1.dot:
      node.meta = meta;
      return this.parseImportMeta(node)
    default:
      this.unexpected();
    }
  };

  pp$5.parseDynamicImport = function(node) {
    this.next(); // skip `(`

    // Parse node.source.
    node.source = this.parseMaybeAssign();

    // Verify ending.
    if (!this.eat(types$1.parenR)) {
      var errorPos = this.start;
      if (this.eat(types$1.comma) && this.eat(types$1.parenR)) {
        this.raiseRecoverable(errorPos, "Trailing comma is not allowed in import()");
      } else {
        this.unexpected(errorPos);
      }
    }

    return this.finishNode(node, "ImportExpression")
  };

  pp$5.parseImportMeta = function(node) {
    this.next(); // skip `.`

    var containsEsc = this.containsEsc;
    node.property = this.parseIdent(true);

    if (node.property.name !== "meta")
      { this.raiseRecoverable(node.property.start, "The only valid meta property for import is 'import.meta'"); }
    if (containsEsc)
      { this.raiseRecoverable(node.start, "'import.meta' must not contain escaped characters"); }
    if (this.options.sourceType !== "module" && !this.options.allowImportExportEverywhere)
      { this.raiseRecoverable(node.start, "Cannot use 'import.meta' outside a module"); }

    return this.finishNode(node, "MetaProperty")
  };

  pp$5.parseLiteral = function(value) {
    var node = this.startNode();
    node.value = value;
    node.raw = this.input.slice(this.start, this.end);
    if (node.raw.charCodeAt(node.raw.length - 1) === 110) { node.bigint = node.raw.slice(0, -1).replace(/_/g, ""); }
    this.next();
    return this.finishNode(node, "Literal")
  };

  pp$5.parseParenExpression = function() {
    this.expect(types$1.parenL);
    var val = this.parseExpression();
    this.expect(types$1.parenR);
    return val
  };

  pp$5.parseParenAndDistinguishExpression = function(canBeArrow, forInit) {
    var startPos = this.start, startLoc = this.startLoc, val, allowTrailingComma = this.options.ecmaVersion >= 8;
    if (this.options.ecmaVersion >= 6) {
      this.next();

      var innerStartPos = this.start, innerStartLoc = this.startLoc;
      var exprList = [], first = true, lastIsComma = false;
      var refDestructuringErrors = new DestructuringErrors, oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, spreadStart;
      this.yieldPos = 0;
      this.awaitPos = 0;
      // Do not save awaitIdentPos to allow checking awaits nested in parameters
      while (this.type !== types$1.parenR) {
        first ? first = false : this.expect(types$1.comma);
        if (allowTrailingComma && this.afterTrailingComma(types$1.parenR, true)) {
          lastIsComma = true;
          break
        } else if (this.type === types$1.ellipsis) {
          spreadStart = this.start;
          exprList.push(this.parseParenItem(this.parseRestBinding()));
          if (this.type === types$1.comma) { this.raise(this.start, "Comma is not permitted after the rest element"); }
          break
        } else {
          exprList.push(this.parseMaybeAssign(false, refDestructuringErrors, this.parseParenItem));
        }
      }
      var innerEndPos = this.lastTokEnd, innerEndLoc = this.lastTokEndLoc;
      this.expect(types$1.parenR);

      if (canBeArrow && !this.canInsertSemicolon() && this.eat(types$1.arrow)) {
        this.checkPatternErrors(refDestructuringErrors, false);
        this.checkYieldAwaitInDefaultParams();
        this.yieldPos = oldYieldPos;
        this.awaitPos = oldAwaitPos;
        return this.parseParenArrowList(startPos, startLoc, exprList, forInit)
      }

      if (!exprList.length || lastIsComma) { this.unexpected(this.lastTokStart); }
      if (spreadStart) { this.unexpected(spreadStart); }
      this.checkExpressionErrors(refDestructuringErrors, true);
      this.yieldPos = oldYieldPos || this.yieldPos;
      this.awaitPos = oldAwaitPos || this.awaitPos;

      if (exprList.length > 1) {
        val = this.startNodeAt(innerStartPos, innerStartLoc);
        val.expressions = exprList;
        this.finishNodeAt(val, "SequenceExpression", innerEndPos, innerEndLoc);
      } else {
        val = exprList[0];
      }
    } else {
      val = this.parseParenExpression();
    }

    if (this.options.preserveParens) {
      var par = this.startNodeAt(startPos, startLoc);
      par.expression = val;
      return this.finishNode(par, "ParenthesizedExpression")
    } else {
      return val
    }
  };

  pp$5.parseParenItem = function(item) {
    return item
  };

  pp$5.parseParenArrowList = function(startPos, startLoc, exprList, forInit) {
    return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), exprList, false, forInit)
  };

  // New's precedence is slightly tricky. It must allow its argument to
  // be a `[]` or dot subscript expression, but not a call — at least,
  // not without wrapping it in parentheses. Thus, it uses the noCalls
  // argument to parseSubscripts to prevent it from consuming the
  // argument list.

  var empty = [];

  pp$5.parseNew = function() {
    if (this.containsEsc) { this.raiseRecoverable(this.start, "Escape sequence in keyword new"); }
    var node = this.startNode();
    var meta = this.parseIdent(true);
    if (this.options.ecmaVersion >= 6 && this.eat(types$1.dot)) {
      node.meta = meta;
      var containsEsc = this.containsEsc;
      node.property = this.parseIdent(true);
      if (node.property.name !== "target")
        { this.raiseRecoverable(node.property.start, "The only valid meta property for new is 'new.target'"); }
      if (containsEsc)
        { this.raiseRecoverable(node.start, "'new.target' must not contain escaped characters"); }
      if (!this.allowNewDotTarget)
        { this.raiseRecoverable(node.start, "'new.target' can only be used in functions and class static block"); }
      return this.finishNode(node, "MetaProperty")
    }
    var startPos = this.start, startLoc = this.startLoc, isImport = this.type === types$1._import;
    node.callee = this.parseSubscripts(this.parseExprAtom(), startPos, startLoc, true, false);
    if (isImport && node.callee.type === "ImportExpression") {
      this.raise(startPos, "Cannot use new with import()");
    }
    if (this.eat(types$1.parenL)) { node.arguments = this.parseExprList(types$1.parenR, this.options.ecmaVersion >= 8, false); }
    else { node.arguments = empty; }
    return this.finishNode(node, "NewExpression")
  };

  // Parse template expression.

  pp$5.parseTemplateElement = function(ref) {
    var isTagged = ref.isTagged;

    var elem = this.startNode();
    if (this.type === types$1.invalidTemplate) {
      if (!isTagged) {
        this.raiseRecoverable(this.start, "Bad escape sequence in untagged template literal");
      }
      elem.value = {
        raw: this.value,
        cooked: null
      };
    } else {
      elem.value = {
        raw: this.input.slice(this.start, this.end).replace(/\r\n?/g, "\n"),
        cooked: this.value
      };
    }
    this.next();
    elem.tail = this.type === types$1.backQuote;
    return this.finishNode(elem, "TemplateElement")
  };

  pp$5.parseTemplate = function(ref) {
    if ( ref === void 0 ) ref = {};
    var isTagged = ref.isTagged; if ( isTagged === void 0 ) isTagged = false;

    var node = this.startNode();
    this.next();
    node.expressions = [];
    var curElt = this.parseTemplateElement({isTagged: isTagged});
    node.quasis = [curElt];
    while (!curElt.tail) {
      if (this.type === types$1.eof) { this.raise(this.pos, "Unterminated template literal"); }
      this.expect(types$1.dollarBraceL);
      node.expressions.push(this.parseExpression());
      this.expect(types$1.braceR);
      node.quasis.push(curElt = this.parseTemplateElement({isTagged: isTagged}));
    }
    this.next();
    return this.finishNode(node, "TemplateLiteral")
  };

  pp$5.isAsyncProp = function(prop) {
    return !prop.computed && prop.key.type === "Identifier" && prop.key.name === "async" &&
      (this.type === types$1.name || this.type === types$1.num || this.type === types$1.string || this.type === types$1.bracketL || this.type.keyword || (this.options.ecmaVersion >= 9 && this.type === types$1.star)) &&
      !lineBreak.test(this.input.slice(this.lastTokEnd, this.start))
  };

  // Parse an object literal or binding pattern.

  pp$5.parseObj = function(isPattern, refDestructuringErrors) {
    var node = this.startNode(), first = true, propHash = {};
    node.properties = [];
    this.next();
    while (!this.eat(types$1.braceR)) {
      if (!first) {
        this.expect(types$1.comma);
        if (this.options.ecmaVersion >= 5 && this.afterTrailingComma(types$1.braceR)) { break }
      } else { first = false; }

      var prop = this.parseProperty(isPattern, refDestructuringErrors);
      if (!isPattern) { this.checkPropClash(prop, propHash, refDestructuringErrors); }
      node.properties.push(prop);
    }
    return this.finishNode(node, isPattern ? "ObjectPattern" : "ObjectExpression")
  };

  pp$5.parseProperty = function(isPattern, refDestructuringErrors) {
    var prop = this.startNode(), isGenerator, isAsync, startPos, startLoc;
    if (this.options.ecmaVersion >= 9 && this.eat(types$1.ellipsis)) {
      if (isPattern) {
        prop.argument = this.parseIdent(false);
        if (this.type === types$1.comma) {
          this.raise(this.start, "Comma is not permitted after the rest element");
        }
        return this.finishNode(prop, "RestElement")
      }
      // To disallow parenthesized identifier via `this.toAssignable()`.
      if (this.type === types$1.parenL && refDestructuringErrors) {
        if (refDestructuringErrors.parenthesizedAssign < 0) {
          refDestructuringErrors.parenthesizedAssign = this.start;
        }
        if (refDestructuringErrors.parenthesizedBind < 0) {
          refDestructuringErrors.parenthesizedBind = this.start;
        }
      }
      // Parse argument.
      prop.argument = this.parseMaybeAssign(false, refDestructuringErrors);
      // To disallow trailing comma via `this.toAssignable()`.
      if (this.type === types$1.comma && refDestructuringErrors && refDestructuringErrors.trailingComma < 0) {
        refDestructuringErrors.trailingComma = this.start;
      }
      // Finish
      return this.finishNode(prop, "SpreadElement")
    }
    if (this.options.ecmaVersion >= 6) {
      prop.method = false;
      prop.shorthand = false;
      if (isPattern || refDestructuringErrors) {
        startPos = this.start;
        startLoc = this.startLoc;
      }
      if (!isPattern)
        { isGenerator = this.eat(types$1.star); }
    }
    var containsEsc = this.containsEsc;
    this.parsePropertyName(prop);
    if (!isPattern && !containsEsc && this.options.ecmaVersion >= 8 && !isGenerator && this.isAsyncProp(prop)) {
      isAsync = true;
      isGenerator = this.options.ecmaVersion >= 9 && this.eat(types$1.star);
      this.parsePropertyName(prop, refDestructuringErrors);
    } else {
      isAsync = false;
    }
    this.parsePropertyValue(prop, isPattern, isGenerator, isAsync, startPos, startLoc, refDestructuringErrors, containsEsc);
    return this.finishNode(prop, "Property")
  };

  pp$5.parsePropertyValue = function(prop, isPattern, isGenerator, isAsync, startPos, startLoc, refDestructuringErrors, containsEsc) {
    if ((isGenerator || isAsync) && this.type === types$1.colon)
      { this.unexpected(); }

    if (this.eat(types$1.colon)) {
      prop.value = isPattern ? this.parseMaybeDefault(this.start, this.startLoc) : this.parseMaybeAssign(false, refDestructuringErrors);
      prop.kind = "init";
    } else if (this.options.ecmaVersion >= 6 && this.type === types$1.parenL) {
      if (isPattern) { this.unexpected(); }
      prop.kind = "init";
      prop.method = true;
      prop.value = this.parseMethod(isGenerator, isAsync);
    } else if (!isPattern && !containsEsc &&
               this.options.ecmaVersion >= 5 && !prop.computed && prop.key.type === "Identifier" &&
               (prop.key.name === "get" || prop.key.name === "set") &&
               (this.type !== types$1.comma && this.type !== types$1.braceR && this.type !== types$1.eq)) {
      if (isGenerator || isAsync) { this.unexpected(); }
      prop.kind = prop.key.name;
      this.parsePropertyName(prop);
      prop.value = this.parseMethod(false);
      var paramCount = prop.kind === "get" ? 0 : 1;
      if (prop.value.params.length !== paramCount) {
        var start = prop.value.start;
        if (prop.kind === "get")
          { this.raiseRecoverable(start, "getter should have no params"); }
        else
          { this.raiseRecoverable(start, "setter should have exactly one param"); }
      } else {
        if (prop.kind === "set" && prop.value.params[0].type === "RestElement")
          { this.raiseRecoverable(prop.value.params[0].start, "Setter cannot use rest params"); }
      }
    } else if (this.options.ecmaVersion >= 6 && !prop.computed && prop.key.type === "Identifier") {
      if (isGenerator || isAsync) { this.unexpected(); }
      this.checkUnreserved(prop.key);
      if (prop.key.name === "await" && !this.awaitIdentPos)
        { this.awaitIdentPos = startPos; }
      prop.kind = "init";
      if (isPattern) {
        prop.value = this.parseMaybeDefault(startPos, startLoc, this.copyNode(prop.key));
      } else if (this.type === types$1.eq && refDestructuringErrors) {
        if (refDestructuringErrors.shorthandAssign < 0)
          { refDestructuringErrors.shorthandAssign = this.start; }
        prop.value = this.parseMaybeDefault(startPos, startLoc, this.copyNode(prop.key));
      } else {
        prop.value = this.copyNode(prop.key);
      }
      prop.shorthand = true;
    } else { this.unexpected(); }
  };

  pp$5.parsePropertyName = function(prop) {
    if (this.options.ecmaVersion >= 6) {
      if (this.eat(types$1.bracketL)) {
        prop.computed = true;
        prop.key = this.parseMaybeAssign();
        this.expect(types$1.bracketR);
        return prop.key
      } else {
        prop.computed = false;
      }
    }
    return prop.key = this.type === types$1.num || this.type === types$1.string ? this.parseExprAtom() : this.parseIdent(this.options.allowReserved !== "never")
  };

  // Initialize empty function node.

  pp$5.initFunction = function(node) {
    node.id = null;
    if (this.options.ecmaVersion >= 6) { node.generator = node.expression = false; }
    if (this.options.ecmaVersion >= 8) { node.async = false; }
  };

  // Parse object or class method.

  pp$5.parseMethod = function(isGenerator, isAsync, allowDirectSuper) {
    var node = this.startNode(), oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, oldAwaitIdentPos = this.awaitIdentPos;

    this.initFunction(node);
    if (this.options.ecmaVersion >= 6)
      { node.generator = isGenerator; }
    if (this.options.ecmaVersion >= 8)
      { node.async = !!isAsync; }

    this.yieldPos = 0;
    this.awaitPos = 0;
    this.awaitIdentPos = 0;
    this.enterScope(functionFlags(isAsync, node.generator) | SCOPE_SUPER | (allowDirectSuper ? SCOPE_DIRECT_SUPER : 0));

    this.expect(types$1.parenL);
    node.params = this.parseBindingList(types$1.parenR, false, this.options.ecmaVersion >= 8);
    this.checkYieldAwaitInDefaultParams();
    this.parseFunctionBody(node, false, true, false);

    this.yieldPos = oldYieldPos;
    this.awaitPos = oldAwaitPos;
    this.awaitIdentPos = oldAwaitIdentPos;
    return this.finishNode(node, "FunctionExpression")
  };

  // Parse arrow function expression with given parameters.

  pp$5.parseArrowExpression = function(node, params, isAsync, forInit) {
    var oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, oldAwaitIdentPos = this.awaitIdentPos;

    this.enterScope(functionFlags(isAsync, false) | SCOPE_ARROW);
    this.initFunction(node);
    if (this.options.ecmaVersion >= 8) { node.async = !!isAsync; }

    this.yieldPos = 0;
    this.awaitPos = 0;
    this.awaitIdentPos = 0;

    node.params = this.toAssignableList(params, true);
    this.parseFunctionBody(node, true, false, forInit);

    this.yieldPos = oldYieldPos;
    this.awaitPos = oldAwaitPos;
    this.awaitIdentPos = oldAwaitIdentPos;
    return this.finishNode(node, "ArrowFunctionExpression")
  };

  // Parse function body and check parameters.

  pp$5.parseFunctionBody = function(node, isArrowFunction, isMethod, forInit) {
    var isExpression = isArrowFunction && this.type !== types$1.braceL;
    var oldStrict = this.strict, useStrict = false;

    if (isExpression) {
      node.body = this.parseMaybeAssign(forInit);
      node.expression = true;
      this.checkParams(node, false);
    } else {
      var nonSimple = this.options.ecmaVersion >= 7 && !this.isSimpleParamList(node.params);
      if (!oldStrict || nonSimple) {
        useStrict = this.strictDirective(this.end);
        // If this is a strict mode function, verify that argument names
        // are not repeated, and it does not try to bind the words `eval`
        // or `arguments`.
        if (useStrict && nonSimple)
          { this.raiseRecoverable(node.start, "Illegal 'use strict' directive in function with non-simple parameter list"); }
      }
      // Start a new scope with regard to labels and the `inFunction`
      // flag (restore them to their old value afterwards).
      var oldLabels = this.labels;
      this.labels = [];
      if (useStrict) { this.strict = true; }

      // Add the params to varDeclaredNames to ensure that an error is thrown
      // if a let/const declaration in the function clashes with one of the params.
      this.checkParams(node, !oldStrict && !useStrict && !isArrowFunction && !isMethod && this.isSimpleParamList(node.params));
      // Ensure the function name isn't a forbidden identifier in strict mode, e.g. 'eval'
      if (this.strict && node.id) { this.checkLValSimple(node.id, BIND_OUTSIDE); }
      node.body = this.parseBlock(false, undefined, useStrict && !oldStrict);
      node.expression = false;
      this.adaptDirectivePrologue(node.body.body);
      this.labels = oldLabels;
    }
    this.exitScope();
  };

  pp$5.isSimpleParamList = function(params) {
    for (var i = 0, list = params; i < list.length; i += 1)
      {
      var param = list[i];

      if (param.type !== "Identifier") { return false
    } }
    return true
  };

  // Checks function params for various disallowed patterns such as using "eval"
  // or "arguments" and duplicate parameters.

  pp$5.checkParams = function(node, allowDuplicates) {
    var nameHash = Object.create(null);
    for (var i = 0, list = node.params; i < list.length; i += 1)
      {
      var param = list[i];

      this.checkLValInnerPattern(param, BIND_VAR, allowDuplicates ? null : nameHash);
    }
  };

  // Parses a comma-separated list of expressions, and returns them as
  // an array. `close` is the token type that ends the list, and
  // `allowEmpty` can be turned on to allow subsequent commas with
  // nothing in between them to be parsed as `null` (which is needed
  // for array literals).

  pp$5.parseExprList = function(close, allowTrailingComma, allowEmpty, refDestructuringErrors) {
    var elts = [], first = true;
    while (!this.eat(close)) {
      if (!first) {
        this.expect(types$1.comma);
        if (allowTrailingComma && this.afterTrailingComma(close)) { break }
      } else { first = false; }

      var elt = (void 0);
      if (allowEmpty && this.type === types$1.comma)
        { elt = null; }
      else if (this.type === types$1.ellipsis) {
        elt = this.parseSpread(refDestructuringErrors);
        if (refDestructuringErrors && this.type === types$1.comma && refDestructuringErrors.trailingComma < 0)
          { refDestructuringErrors.trailingComma = this.start; }
      } else {
        elt = this.parseMaybeAssign(false, refDestructuringErrors);
      }
      elts.push(elt);
    }
    return elts
  };

  pp$5.checkUnreserved = function(ref) {
    var start = ref.start;
    var end = ref.end;
    var name = ref.name;

    if (this.inGenerator && name === "yield")
      { this.raiseRecoverable(start, "Cannot use 'yield' as identifier inside a generator"); }
    if (this.inAsync && name === "await")
      { this.raiseRecoverable(start, "Cannot use 'await' as identifier inside an async function"); }
    if (this.currentThisScope().inClassFieldInit && name === "arguments")
      { this.raiseRecoverable(start, "Cannot use 'arguments' in class field initializer"); }
    if (this.inClassStaticBlock && (name === "arguments" || name === "await"))
      { this.raise(start, ("Cannot use " + name + " in class static initialization block")); }
    if (this.keywords.test(name))
      { this.raise(start, ("Unexpected keyword '" + name + "'")); }
    if (this.options.ecmaVersion < 6 &&
      this.input.slice(start, end).indexOf("\\") !== -1) { return }
    var re = this.strict ? this.reservedWordsStrict : this.reservedWords;
    if (re.test(name)) {
      if (!this.inAsync && name === "await")
        { this.raiseRecoverable(start, "Cannot use keyword 'await' outside an async function"); }
      this.raiseRecoverable(start, ("The keyword '" + name + "' is reserved"));
    }
  };

  // Parse the next token as an identifier. If `liberal` is true (used
  // when parsing properties), it will also convert keywords into
  // identifiers.

  pp$5.parseIdent = function(liberal, isBinding) {
    var node = this.startNode();
    if (this.type === types$1.name) {
      node.name = this.value;
    } else if (this.type.keyword) {
      node.name = this.type.keyword;

      // To fix https://github.com/acornjs/acorn/issues/575
      // `class` and `function` keywords push new context into this.context.
      // But there is no chance to pop the context if the keyword is consumed as an identifier such as a property name.
      // If the previous token is a dot, this does not apply because the context-managing code already ignored the keyword
      if ((node.name === "class" || node.name === "function") &&
          (this.lastTokEnd !== this.lastTokStart + 1 || this.input.charCodeAt(this.lastTokStart) !== 46)) {
        this.context.pop();
      }
    } else {
      this.unexpected();
    }
    this.next(!!liberal);
    this.finishNode(node, "Identifier");
    if (!liberal) {
      this.checkUnreserved(node);
      if (node.name === "await" && !this.awaitIdentPos)
        { this.awaitIdentPos = node.start; }
    }
    return node
  };

  pp$5.parsePrivateIdent = function() {
    var node = this.startNode();
    if (this.type === types$1.privateId) {
      node.name = this.value;
    } else {
      this.unexpected();
    }
    this.next();
    this.finishNode(node, "PrivateIdentifier");

    // For validating existence
    if (this.privateNameStack.length === 0) {
      this.raise(node.start, ("Private field '#" + (node.name) + "' must be declared in an enclosing class"));
    } else {
      this.privateNameStack[this.privateNameStack.length - 1].used.push(node);
    }

    return node
  };

  // Parses yield expression inside generator.

  pp$5.parseYield = function(forInit) {
    if (!this.yieldPos) { this.yieldPos = this.start; }

    var node = this.startNode();
    this.next();
    if (this.type === types$1.semi || this.canInsertSemicolon() || (this.type !== types$1.star && !this.type.startsExpr)) {
      node.delegate = false;
      node.argument = null;
    } else {
      node.delegate = this.eat(types$1.star);
      node.argument = this.parseMaybeAssign(forInit);
    }
    return this.finishNode(node, "YieldExpression")
  };

  pp$5.parseAwait = function(forInit) {
    if (!this.awaitPos) { this.awaitPos = this.start; }

    var node = this.startNode();
    this.next();
    node.argument = this.parseMaybeUnary(null, true, false, forInit);
    return this.finishNode(node, "AwaitExpression")
  };

  var pp$4 = Parser.prototype;

  // This function is used to raise exceptions on parse errors. It
  // takes an offset integer (into the current `input`) to indicate
  // the location of the error, attaches the position to the end
  // of the error message, and then raises a `SyntaxError` with that
  // message.

  pp$4.raise = function(pos, message) {
    var loc = getLineInfo(this.input, pos);
    message += " (" + loc.line + ":" + loc.column + ")";
    var err = new SyntaxError(message);
    err.pos = pos; err.loc = loc; err.raisedAt = this.pos;
    throw err
  };

  pp$4.raiseRecoverable = pp$4.raise;

  pp$4.curPosition = function() {
    if (this.options.locations) {
      return new Position(this.curLine, this.pos - this.lineStart)
    }
  };

  var pp$3 = Parser.prototype;

  var Scope = function Scope(flags) {
    this.flags = flags;
    // A list of var-declared names in the current lexical scope
    this.var = [];
    // A list of lexically-declared names in the current lexical scope
    this.lexical = [];
    // A list of lexically-declared FunctionDeclaration names in the current lexical scope
    this.functions = [];
    // A switch to disallow the identifier reference 'arguments'
    this.inClassFieldInit = false;
  };

  // The functions in this module keep track of declared variables in the current scope in order to detect duplicate variable names.

  pp$3.enterScope = function(flags) {
    this.scopeStack.push(new Scope(flags));
  };

  pp$3.exitScope = function() {
    this.scopeStack.pop();
  };

  // The spec says:
  // > At the top level of a function, or script, function declarations are
  // > treated like var declarations rather than like lexical declarations.
  pp$3.treatFunctionsAsVarInScope = function(scope) {
    return (scope.flags & SCOPE_FUNCTION) || !this.inModule && (scope.flags & SCOPE_TOP)
  };

  pp$3.declareName = function(name, bindingType, pos) {
    var redeclared = false;
    if (bindingType === BIND_LEXICAL) {
      var scope = this.currentScope();
      redeclared = scope.lexical.indexOf(name) > -1 || scope.functions.indexOf(name) > -1 || scope.var.indexOf(name) > -1;
      scope.lexical.push(name);
      if (this.inModule && (scope.flags & SCOPE_TOP))
        { delete this.undefinedExports[name]; }
    } else if (bindingType === BIND_SIMPLE_CATCH) {
      var scope$1 = this.currentScope();
      scope$1.lexical.push(name);
    } else if (bindingType === BIND_FUNCTION) {
      var scope$2 = this.currentScope();
      if (this.treatFunctionsAsVar)
        { redeclared = scope$2.lexical.indexOf(name) > -1; }
      else
        { redeclared = scope$2.lexical.indexOf(name) > -1 || scope$2.var.indexOf(name) > -1; }
      scope$2.functions.push(name);
    } else {
      for (var i = this.scopeStack.length - 1; i >= 0; --i) {
        var scope$3 = this.scopeStack[i];
        if (scope$3.lexical.indexOf(name) > -1 && !((scope$3.flags & SCOPE_SIMPLE_CATCH) && scope$3.lexical[0] === name) ||
            !this.treatFunctionsAsVarInScope(scope$3) && scope$3.functions.indexOf(name) > -1) {
          redeclared = true;
          break
        }
        scope$3.var.push(name);
        if (this.inModule && (scope$3.flags & SCOPE_TOP))
          { delete this.undefinedExports[name]; }
        if (scope$3.flags & SCOPE_VAR) { break }
      }
    }
    if (redeclared) { this.raiseRecoverable(pos, ("Identifier '" + name + "' has already been declared")); }
  };

  pp$3.checkLocalExport = function(id) {
    // scope.functions must be empty as Module code is always strict.
    if (this.scopeStack[0].lexical.indexOf(id.name) === -1 &&
        this.scopeStack[0].var.indexOf(id.name) === -1) {
      this.undefinedExports[id.name] = id;
    }
  };

  pp$3.currentScope = function() {
    return this.scopeStack[this.scopeStack.length - 1]
  };

  pp$3.currentVarScope = function() {
    for (var i = this.scopeStack.length - 1;; i--) {
      var scope = this.scopeStack[i];
      if (scope.flags & SCOPE_VAR) { return scope }
    }
  };

  // Could be useful for `this`, `new.target`, `super()`, `super.property`, and `super[property]`.
  pp$3.currentThisScope = function() {
    for (var i = this.scopeStack.length - 1;; i--) {
      var scope = this.scopeStack[i];
      if (scope.flags & SCOPE_VAR && !(scope.flags & SCOPE_ARROW)) { return scope }
    }
  };

  var Node = function Node(parser, pos, loc) {
    this.type = "";
    this.start = pos;
    this.end = 0;
    if (parser.options.locations)
      { this.loc = new SourceLocation(parser, loc); }
    if (parser.options.directSourceFile)
      { this.sourceFile = parser.options.directSourceFile; }
    if (parser.options.ranges)
      { this.range = [pos, 0]; }
  };

  // Start an AST node, attaching a start offset.

  var pp$2 = Parser.prototype;

  pp$2.startNode = function() {
    return new Node(this, this.start, this.startLoc)
  };

  pp$2.startNodeAt = function(pos, loc) {
    return new Node(this, pos, loc)
  };

  // Finish an AST node, adding `type` and `end` properties.

  function finishNodeAt(node, type, pos, loc) {
    node.type = type;
    node.end = pos;
    if (this.options.locations)
      { node.loc.end = loc; }
    if (this.options.ranges)
      { node.range[1] = pos; }
    return node
  }

  pp$2.finishNode = function(node, type) {
    return finishNodeAt.call(this, node, type, this.lastTokEnd, this.lastTokEndLoc)
  };

  // Finish node at given position

  pp$2.finishNodeAt = function(node, type, pos, loc) {
    return finishNodeAt.call(this, node, type, pos, loc)
  };

  pp$2.copyNode = function(node) {
    var newNode = new Node(this, node.start, this.startLoc);
    for (var prop in node) { newNode[prop] = node[prop]; }
    return newNode
  };

  // This file contains Unicode properties extracted from the ECMAScript
  // specification. The lists are extracted like so:
  // $$('#table-binary-unicode-properties > figure > table > tbody > tr > td:nth-child(1) code').map(el => el.innerText)

  // #table-binary-unicode-properties
  var ecma9BinaryProperties = "ASCII ASCII_Hex_Digit AHex Alphabetic Alpha Any Assigned Bidi_Control Bidi_C Bidi_Mirrored Bidi_M Case_Ignorable CI Cased Changes_When_Casefolded CWCF Changes_When_Casemapped CWCM Changes_When_Lowercased CWL Changes_When_NFKC_Casefolded CWKCF Changes_When_Titlecased CWT Changes_When_Uppercased CWU Dash Default_Ignorable_Code_Point DI Deprecated Dep Diacritic Dia Emoji Emoji_Component Emoji_Modifier Emoji_Modifier_Base Emoji_Presentation Extender Ext Grapheme_Base Gr_Base Grapheme_Extend Gr_Ext Hex_Digit Hex IDS_Binary_Operator IDSB IDS_Trinary_Operator IDST ID_Continue IDC ID_Start IDS Ideographic Ideo Join_Control Join_C Logical_Order_Exception LOE Lowercase Lower Math Noncharacter_Code_Point NChar Pattern_Syntax Pat_Syn Pattern_White_Space Pat_WS Quotation_Mark QMark Radical Regional_Indicator RI Sentence_Terminal STerm Soft_Dotted SD Terminal_Punctuation Term Unified_Ideograph UIdeo Uppercase Upper Variation_Selector VS White_Space space XID_Continue XIDC XID_Start XIDS";
  var ecma10BinaryProperties = ecma9BinaryProperties + " Extended_Pictographic";
  var ecma11BinaryProperties = ecma10BinaryProperties;
  var ecma12BinaryProperties = ecma11BinaryProperties + " EBase EComp EMod EPres ExtPict";
  var ecma13BinaryProperties = ecma12BinaryProperties;
  var unicodeBinaryProperties = {
    9: ecma9BinaryProperties,
    10: ecma10BinaryProperties,
    11: ecma11BinaryProperties,
    12: ecma12BinaryProperties,
    13: ecma13BinaryProperties
  };

  // #table-unicode-general-category-values
  var unicodeGeneralCategoryValues = "Cased_Letter LC Close_Punctuation Pe Connector_Punctuation Pc Control Cc cntrl Currency_Symbol Sc Dash_Punctuation Pd Decimal_Number Nd digit Enclosing_Mark Me Final_Punctuation Pf Format Cf Initial_Punctuation Pi Letter L Letter_Number Nl Line_Separator Zl Lowercase_Letter Ll Mark M Combining_Mark Math_Symbol Sm Modifier_Letter Lm Modifier_Symbol Sk Nonspacing_Mark Mn Number N Open_Punctuation Ps Other C Other_Letter Lo Other_Number No Other_Punctuation Po Other_Symbol So Paragraph_Separator Zp Private_Use Co Punctuation P punct Separator Z Space_Separator Zs Spacing_Mark Mc Surrogate Cs Symbol S Titlecase_Letter Lt Unassigned Cn Uppercase_Letter Lu";

  // #table-unicode-script-values
  var ecma9ScriptValues = "Adlam Adlm Ahom Anatolian_Hieroglyphs Hluw Arabic Arab Armenian Armn Avestan Avst Balinese Bali Bamum Bamu Bassa_Vah Bass Batak Batk Bengali Beng Bhaiksuki Bhks Bopomofo Bopo Brahmi Brah Braille Brai Buginese Bugi Buhid Buhd Canadian_Aboriginal Cans Carian Cari Caucasian_Albanian Aghb Chakma Cakm Cham Cham Cherokee Cher Common Zyyy Coptic Copt Qaac Cuneiform Xsux Cypriot Cprt Cyrillic Cyrl Deseret Dsrt Devanagari Deva Duployan Dupl Egyptian_Hieroglyphs Egyp Elbasan Elba Ethiopic Ethi Georgian Geor Glagolitic Glag Gothic Goth Grantha Gran Greek Grek Gujarati Gujr Gurmukhi Guru Han Hani Hangul Hang Hanunoo Hano Hatran Hatr Hebrew Hebr Hiragana Hira Imperial_Aramaic Armi Inherited Zinh Qaai Inscriptional_Pahlavi Phli Inscriptional_Parthian Prti Javanese Java Kaithi Kthi Kannada Knda Katakana Kana Kayah_Li Kali Kharoshthi Khar Khmer Khmr Khojki Khoj Khudawadi Sind Lao Laoo Latin Latn Lepcha Lepc Limbu Limb Linear_A Lina Linear_B Linb Lisu Lisu Lycian Lyci Lydian Lydi Mahajani Mahj Malayalam Mlym Mandaic Mand Manichaean Mani Marchen Marc Masaram_Gondi Gonm Meetei_Mayek Mtei Mende_Kikakui Mend Meroitic_Cursive Merc Meroitic_Hieroglyphs Mero Miao Plrd Modi Mongolian Mong Mro Mroo Multani Mult Myanmar Mymr Nabataean Nbat New_Tai_Lue Talu Newa Newa Nko Nkoo Nushu Nshu Ogham Ogam Ol_Chiki Olck Old_Hungarian Hung Old_Italic Ital Old_North_Arabian Narb Old_Permic Perm Old_Persian Xpeo Old_South_Arabian Sarb Old_Turkic Orkh Oriya Orya Osage Osge Osmanya Osma Pahawh_Hmong Hmng Palmyrene Palm Pau_Cin_Hau Pauc Phags_Pa Phag Phoenician Phnx Psalter_Pahlavi Phlp Rejang Rjng Runic Runr Samaritan Samr Saurashtra Saur Sharada Shrd Shavian Shaw Siddham Sidd SignWriting Sgnw Sinhala Sinh Sora_Sompeng Sora Soyombo Soyo Sundanese Sund Syloti_Nagri Sylo Syriac Syrc Tagalog Tglg Tagbanwa Tagb Tai_Le Tale Tai_Tham Lana Tai_Viet Tavt Takri Takr Tamil Taml Tangut Tang Telugu Telu Thaana Thaa Thai Thai Tibetan Tibt Tifinagh Tfng Tirhuta Tirh Ugaritic Ugar Vai Vaii Warang_Citi Wara Yi Yiii Zanabazar_Square Zanb";
  var ecma10ScriptValues = ecma9ScriptValues + " Dogra Dogr Gunjala_Gondi Gong Hanifi_Rohingya Rohg Makasar Maka Medefaidrin Medf Old_Sogdian Sogo Sogdian Sogd";
  var ecma11ScriptValues = ecma10ScriptValues + " Elymaic Elym Nandinagari Nand Nyiakeng_Puachue_Hmong Hmnp Wancho Wcho";
  var ecma12ScriptValues = ecma11ScriptValues + " Chorasmian Chrs Diak Dives_Akuru Khitan_Small_Script Kits Yezi Yezidi";
  var ecma13ScriptValues = ecma12ScriptValues + " Cypro_Minoan Cpmn Old_Uyghur Ougr Tangsa Tnsa Toto Vithkuqi Vith";
  var unicodeScriptValues = {
    9: ecma9ScriptValues,
    10: ecma10ScriptValues,
    11: ecma11ScriptValues,
    12: ecma12ScriptValues,
    13: ecma13ScriptValues
  };

  var data = {};
  function buildUnicodeData(ecmaVersion) {
    var d = data[ecmaVersion] = {
      binary: wordsRegexp(unicodeBinaryProperties[ecmaVersion] + " " + unicodeGeneralCategoryValues),
      nonBinary: {
        General_Category: wordsRegexp(unicodeGeneralCategoryValues),
        Script: wordsRegexp(unicodeScriptValues[ecmaVersion])
      }
    };
    d.nonBinary.Script_Extensions = d.nonBinary.Script;

    d.nonBinary.gc = d.nonBinary.General_Category;
    d.nonBinary.sc = d.nonBinary.Script;
    d.nonBinary.scx = d.nonBinary.Script_Extensions;
  }

  for (var i = 0, list = [9, 10, 11, 12, 13]; i < list.length; i += 1) {
    var ecmaVersion = list[i];

    buildUnicodeData(ecmaVersion);
  }

  var pp$1 = Parser.prototype;

  var RegExpValidationState = function RegExpValidationState(parser) {
    this.parser = parser;
    this.validFlags = "gim" + (parser.options.ecmaVersion >= 6 ? "uy" : "") + (parser.options.ecmaVersion >= 9 ? "s" : "") + (parser.options.ecmaVersion >= 13 ? "d" : "");
    this.unicodeProperties = data[parser.options.ecmaVersion >= 13 ? 13 : parser.options.ecmaVersion];
    this.source = "";
    this.flags = "";
    this.start = 0;
    this.switchU = false;
    this.switchN = false;
    this.pos = 0;
    this.lastIntValue = 0;
    this.lastStringValue = "";
    this.lastAssertionIsQuantifiable = false;
    this.numCapturingParens = 0;
    this.maxBackReference = 0;
    this.groupNames = [];
    this.backReferenceNames = [];
  };

  RegExpValidationState.prototype.reset = function reset (start, pattern, flags) {
    var unicode = flags.indexOf("u") !== -1;
    this.start = start | 0;
    this.source = pattern + "";
    this.flags = flags;
    this.switchU = unicode && this.parser.options.ecmaVersion >= 6;
    this.switchN = unicode && this.parser.options.ecmaVersion >= 9;
  };

  RegExpValidationState.prototype.raise = function raise (message) {
    this.parser.raiseRecoverable(this.start, ("Invalid regular expression: /" + (this.source) + "/: " + message));
  };

  // If u flag is given, this returns the code point at the index (it combines a surrogate pair).
  // Otherwise, this returns the code unit of the index (can be a part of a surrogate pair).
  RegExpValidationState.prototype.at = function at (i, forceU) {
      if ( forceU === void 0 ) forceU = false;

    var s = this.source;
    var l = s.length;
    if (i >= l) {
      return -1
    }
    var c = s.charCodeAt(i);
    if (!(forceU || this.switchU) || c <= 0xD7FF || c >= 0xE000 || i + 1 >= l) {
      return c
    }
    var next = s.charCodeAt(i + 1);
    return next >= 0xDC00 && next <= 0xDFFF ? (c << 10) + next - 0x35FDC00 : c
  };

  RegExpValidationState.prototype.nextIndex = function nextIndex (i, forceU) {
      if ( forceU === void 0 ) forceU = false;

    var s = this.source;
    var l = s.length;
    if (i >= l) {
      return l
    }
    var c = s.charCodeAt(i), next;
    if (!(forceU || this.switchU) || c <= 0xD7FF || c >= 0xE000 || i + 1 >= l ||
        (next = s.charCodeAt(i + 1)) < 0xDC00 || next > 0xDFFF) {
      return i + 1
    }
    return i + 2
  };

  RegExpValidationState.prototype.current = function current (forceU) {
      if ( forceU === void 0 ) forceU = false;

    return this.at(this.pos, forceU)
  };

  RegExpValidationState.prototype.lookahead = function lookahead (forceU) {
      if ( forceU === void 0 ) forceU = false;

    return this.at(this.nextIndex(this.pos, forceU), forceU)
  };

  RegExpValidationState.prototype.advance = function advance (forceU) {
      if ( forceU === void 0 ) forceU = false;

    this.pos = this.nextIndex(this.pos, forceU);
  };

  RegExpValidationState.prototype.eat = function eat (ch, forceU) {
      if ( forceU === void 0 ) forceU = false;

    if (this.current(forceU) === ch) {
      this.advance(forceU);
      return true
    }
    return false
  };

  function codePointToString$1(ch) {
    if (ch <= 0xFFFF) { return String.fromCharCode(ch) }
    ch -= 0x10000;
    return String.fromCharCode((ch >> 10) + 0xD800, (ch & 0x03FF) + 0xDC00)
  }

  /**
   * Validate the flags part of a given RegExpLiteral.
   *
   * @param {RegExpValidationState} state The state to validate RegExp.
   * @returns {void}
   */
  pp$1.validateRegExpFlags = function(state) {
    var validFlags = state.validFlags;
    var flags = state.flags;

    for (var i = 0; i < flags.length; i++) {
      var flag = flags.charAt(i);
      if (validFlags.indexOf(flag) === -1) {
        this.raise(state.start, "Invalid regular expression flag");
      }
      if (flags.indexOf(flag, i + 1) > -1) {
        this.raise(state.start, "Duplicate regular expression flag");
      }
    }
  };

  /**
   * Validate the pattern part of a given RegExpLiteral.
   *
   * @param {RegExpValidationState} state The state to validate RegExp.
   * @returns {void}
   */
  pp$1.validateRegExpPattern = function(state) {
    this.regexp_pattern(state);

    // The goal symbol for the parse is |Pattern[~U, ~N]|. If the result of
    // parsing contains a |GroupName|, reparse with the goal symbol
    // |Pattern[~U, +N]| and use this result instead. Throw a *SyntaxError*
    // exception if _P_ did not conform to the grammar, if any elements of _P_
    // were not matched by the parse, or if any Early Error conditions exist.
    if (!state.switchN && this.options.ecmaVersion >= 9 && state.groupNames.length > 0) {
      state.switchN = true;
      this.regexp_pattern(state);
    }
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-Pattern
  pp$1.regexp_pattern = function(state) {
    state.pos = 0;
    state.lastIntValue = 0;
    state.lastStringValue = "";
    state.lastAssertionIsQuantifiable = false;
    state.numCapturingParens = 0;
    state.maxBackReference = 0;
    state.groupNames.length = 0;
    state.backReferenceNames.length = 0;

    this.regexp_disjunction(state);

    if (state.pos !== state.source.length) {
      // Make the same messages as V8.
      if (state.eat(0x29 /* ) */)) {
        state.raise("Unmatched ')'");
      }
      if (state.eat(0x5D /* ] */) || state.eat(0x7D /* } */)) {
        state.raise("Lone quantifier brackets");
      }
    }
    if (state.maxBackReference > state.numCapturingParens) {
      state.raise("Invalid escape");
    }
    for (var i = 0, list = state.backReferenceNames; i < list.length; i += 1) {
      var name = list[i];

      if (state.groupNames.indexOf(name) === -1) {
        state.raise("Invalid named capture referenced");
      }
    }
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-Disjunction
  pp$1.regexp_disjunction = function(state) {
    this.regexp_alternative(state);
    while (state.eat(0x7C /* | */)) {
      this.regexp_alternative(state);
    }

    // Make the same message as V8.
    if (this.regexp_eatQuantifier(state, true)) {
      state.raise("Nothing to repeat");
    }
    if (state.eat(0x7B /* { */)) {
      state.raise("Lone quantifier brackets");
    }
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-Alternative
  pp$1.regexp_alternative = function(state) {
    while (state.pos < state.source.length && this.regexp_eatTerm(state))
      { }
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-Term
  pp$1.regexp_eatTerm = function(state) {
    if (this.regexp_eatAssertion(state)) {
      // Handle `QuantifiableAssertion Quantifier` alternative.
      // `state.lastAssertionIsQuantifiable` is true if the last eaten Assertion
      // is a QuantifiableAssertion.
      if (state.lastAssertionIsQuantifiable && this.regexp_eatQuantifier(state)) {
        // Make the same message as V8.
        if (state.switchU) {
          state.raise("Invalid quantifier");
        }
      }
      return true
    }

    if (state.switchU ? this.regexp_eatAtom(state) : this.regexp_eatExtendedAtom(state)) {
      this.regexp_eatQuantifier(state);
      return true
    }

    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-Assertion
  pp$1.regexp_eatAssertion = function(state) {
    var start = state.pos;
    state.lastAssertionIsQuantifiable = false;

    // ^, $
    if (state.eat(0x5E /* ^ */) || state.eat(0x24 /* $ */)) {
      return true
    }

    // \b \B
    if (state.eat(0x5C /* \ */)) {
      if (state.eat(0x42 /* B */) || state.eat(0x62 /* b */)) {
        return true
      }
      state.pos = start;
    }

    // Lookahead / Lookbehind
    if (state.eat(0x28 /* ( */) && state.eat(0x3F /* ? */)) {
      var lookbehind = false;
      if (this.options.ecmaVersion >= 9) {
        lookbehind = state.eat(0x3C /* < */);
      }
      if (state.eat(0x3D /* = */) || state.eat(0x21 /* ! */)) {
        this.regexp_disjunction(state);
        if (!state.eat(0x29 /* ) */)) {
          state.raise("Unterminated group");
        }
        state.lastAssertionIsQuantifiable = !lookbehind;
        return true
      }
    }

    state.pos = start;
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-Quantifier
  pp$1.regexp_eatQuantifier = function(state, noError) {
    if ( noError === void 0 ) noError = false;

    if (this.regexp_eatQuantifierPrefix(state, noError)) {
      state.eat(0x3F /* ? */);
      return true
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-QuantifierPrefix
  pp$1.regexp_eatQuantifierPrefix = function(state, noError) {
    return (
      state.eat(0x2A /* * */) ||
      state.eat(0x2B /* + */) ||
      state.eat(0x3F /* ? */) ||
      this.regexp_eatBracedQuantifier(state, noError)
    )
  };
  pp$1.regexp_eatBracedQuantifier = function(state, noError) {
    var start = state.pos;
    if (state.eat(0x7B /* { */)) {
      var min = 0, max = -1;
      if (this.regexp_eatDecimalDigits(state)) {
        min = state.lastIntValue;
        if (state.eat(0x2C /* , */) && this.regexp_eatDecimalDigits(state)) {
          max = state.lastIntValue;
        }
        if (state.eat(0x7D /* } */)) {
          // SyntaxError in https://www.ecma-international.org/ecma-262/8.0/#sec-term
          if (max !== -1 && max < min && !noError) {
            state.raise("numbers out of order in {} quantifier");
          }
          return true
        }
      }
      if (state.switchU && !noError) {
        state.raise("Incomplete quantifier");
      }
      state.pos = start;
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-Atom
  pp$1.regexp_eatAtom = function(state) {
    return (
      this.regexp_eatPatternCharacters(state) ||
      state.eat(0x2E /* . */) ||
      this.regexp_eatReverseSolidusAtomEscape(state) ||
      this.regexp_eatCharacterClass(state) ||
      this.regexp_eatUncapturingGroup(state) ||
      this.regexp_eatCapturingGroup(state)
    )
  };
  pp$1.regexp_eatReverseSolidusAtomEscape = function(state) {
    var start = state.pos;
    if (state.eat(0x5C /* \ */)) {
      if (this.regexp_eatAtomEscape(state)) {
        return true
      }
      state.pos = start;
    }
    return false
  };
  pp$1.regexp_eatUncapturingGroup = function(state) {
    var start = state.pos;
    if (state.eat(0x28 /* ( */)) {
      if (state.eat(0x3F /* ? */) && state.eat(0x3A /* : */)) {
        this.regexp_disjunction(state);
        if (state.eat(0x29 /* ) */)) {
          return true
        }
        state.raise("Unterminated group");
      }
      state.pos = start;
    }
    return false
  };
  pp$1.regexp_eatCapturingGroup = function(state) {
    if (state.eat(0x28 /* ( */)) {
      if (this.options.ecmaVersion >= 9) {
        this.regexp_groupSpecifier(state);
      } else if (state.current() === 0x3F /* ? */) {
        state.raise("Invalid group");
      }
      this.regexp_disjunction(state);
      if (state.eat(0x29 /* ) */)) {
        state.numCapturingParens += 1;
        return true
      }
      state.raise("Unterminated group");
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-ExtendedAtom
  pp$1.regexp_eatExtendedAtom = function(state) {
    return (
      state.eat(0x2E /* . */) ||
      this.regexp_eatReverseSolidusAtomEscape(state) ||
      this.regexp_eatCharacterClass(state) ||
      this.regexp_eatUncapturingGroup(state) ||
      this.regexp_eatCapturingGroup(state) ||
      this.regexp_eatInvalidBracedQuantifier(state) ||
      this.regexp_eatExtendedPatternCharacter(state)
    )
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-InvalidBracedQuantifier
  pp$1.regexp_eatInvalidBracedQuantifier = function(state) {
    if (this.regexp_eatBracedQuantifier(state, true)) {
      state.raise("Nothing to repeat");
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-SyntaxCharacter
  pp$1.regexp_eatSyntaxCharacter = function(state) {
    var ch = state.current();
    if (isSyntaxCharacter(ch)) {
      state.lastIntValue = ch;
      state.advance();
      return true
    }
    return false
  };
  function isSyntaxCharacter(ch) {
    return (
      ch === 0x24 /* $ */ ||
      ch >= 0x28 /* ( */ && ch <= 0x2B /* + */ ||
      ch === 0x2E /* . */ ||
      ch === 0x3F /* ? */ ||
      ch >= 0x5B /* [ */ && ch <= 0x5E /* ^ */ ||
      ch >= 0x7B /* { */ && ch <= 0x7D /* } */
    )
  }

  // https://www.ecma-international.org/ecma-262/8.0/#prod-PatternCharacter
  // But eat eager.
  pp$1.regexp_eatPatternCharacters = function(state) {
    var start = state.pos;
    var ch = 0;
    while ((ch = state.current()) !== -1 && !isSyntaxCharacter(ch)) {
      state.advance();
    }
    return state.pos !== start
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-ExtendedPatternCharacter
  pp$1.regexp_eatExtendedPatternCharacter = function(state) {
    var ch = state.current();
    if (
      ch !== -1 &&
      ch !== 0x24 /* $ */ &&
      !(ch >= 0x28 /* ( */ && ch <= 0x2B /* + */) &&
      ch !== 0x2E /* . */ &&
      ch !== 0x3F /* ? */ &&
      ch !== 0x5B /* [ */ &&
      ch !== 0x5E /* ^ */ &&
      ch !== 0x7C /* | */
    ) {
      state.advance();
      return true
    }
    return false
  };

  // GroupSpecifier ::
  //   [empty]
  //   `?` GroupName
  pp$1.regexp_groupSpecifier = function(state) {
    if (state.eat(0x3F /* ? */)) {
      if (this.regexp_eatGroupName(state)) {
        if (state.groupNames.indexOf(state.lastStringValue) !== -1) {
          state.raise("Duplicate capture group name");
        }
        state.groupNames.push(state.lastStringValue);
        return
      }
      state.raise("Invalid group");
    }
  };

  // GroupName ::
  //   `<` RegExpIdentifierName `>`
  // Note: this updates `state.lastStringValue` property with the eaten name.
  pp$1.regexp_eatGroupName = function(state) {
    state.lastStringValue = "";
    if (state.eat(0x3C /* < */)) {
      if (this.regexp_eatRegExpIdentifierName(state) && state.eat(0x3E /* > */)) {
        return true
      }
      state.raise("Invalid capture group name");
    }
    return false
  };

  // RegExpIdentifierName ::
  //   RegExpIdentifierStart
  //   RegExpIdentifierName RegExpIdentifierPart
  // Note: this updates `state.lastStringValue` property with the eaten name.
  pp$1.regexp_eatRegExpIdentifierName = function(state) {
    state.lastStringValue = "";
    if (this.regexp_eatRegExpIdentifierStart(state)) {
      state.lastStringValue += codePointToString$1(state.lastIntValue);
      while (this.regexp_eatRegExpIdentifierPart(state)) {
        state.lastStringValue += codePointToString$1(state.lastIntValue);
      }
      return true
    }
    return false
  };

  // RegExpIdentifierStart ::
  //   UnicodeIDStart
  //   `$`
  //   `_`
  //   `\` RegExpUnicodeEscapeSequence[+U]
  pp$1.regexp_eatRegExpIdentifierStart = function(state) {
    var start = state.pos;
    var forceU = this.options.ecmaVersion >= 11;
    var ch = state.current(forceU);
    state.advance(forceU);

    if (ch === 0x5C /* \ */ && this.regexp_eatRegExpUnicodeEscapeSequence(state, forceU)) {
      ch = state.lastIntValue;
    }
    if (isRegExpIdentifierStart(ch)) {
      state.lastIntValue = ch;
      return true
    }

    state.pos = start;
    return false
  };
  function isRegExpIdentifierStart(ch) {
    return isIdentifierStart(ch, true) || ch === 0x24 /* $ */ || ch === 0x5F /* _ */
  }

  // RegExpIdentifierPart ::
  //   UnicodeIDContinue
  //   `$`
  //   `_`
  //   `\` RegExpUnicodeEscapeSequence[+U]
  //   <ZWNJ>
  //   <ZWJ>
  pp$1.regexp_eatRegExpIdentifierPart = function(state) {
    var start = state.pos;
    var forceU = this.options.ecmaVersion >= 11;
    var ch = state.current(forceU);
    state.advance(forceU);

    if (ch === 0x5C /* \ */ && this.regexp_eatRegExpUnicodeEscapeSequence(state, forceU)) {
      ch = state.lastIntValue;
    }
    if (isRegExpIdentifierPart(ch)) {
      state.lastIntValue = ch;
      return true
    }

    state.pos = start;
    return false
  };
  function isRegExpIdentifierPart(ch) {
    return isIdentifierChar(ch, true) || ch === 0x24 /* $ */ || ch === 0x5F /* _ */ || ch === 0x200C /* <ZWNJ> */ || ch === 0x200D /* <ZWJ> */
  }

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-AtomEscape
  pp$1.regexp_eatAtomEscape = function(state) {
    if (
      this.regexp_eatBackReference(state) ||
      this.regexp_eatCharacterClassEscape(state) ||
      this.regexp_eatCharacterEscape(state) ||
      (state.switchN && this.regexp_eatKGroupName(state))
    ) {
      return true
    }
    if (state.switchU) {
      // Make the same message as V8.
      if (state.current() === 0x63 /* c */) {
        state.raise("Invalid unicode escape");
      }
      state.raise("Invalid escape");
    }
    return false
  };
  pp$1.regexp_eatBackReference = function(state) {
    var start = state.pos;
    if (this.regexp_eatDecimalEscape(state)) {
      var n = state.lastIntValue;
      if (state.switchU) {
        // For SyntaxError in https://www.ecma-international.org/ecma-262/8.0/#sec-atomescape
        if (n > state.maxBackReference) {
          state.maxBackReference = n;
        }
        return true
      }
      if (n <= state.numCapturingParens) {
        return true
      }
      state.pos = start;
    }
    return false
  };
  pp$1.regexp_eatKGroupName = function(state) {
    if (state.eat(0x6B /* k */)) {
      if (this.regexp_eatGroupName(state)) {
        state.backReferenceNames.push(state.lastStringValue);
        return true
      }
      state.raise("Invalid named reference");
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-CharacterEscape
  pp$1.regexp_eatCharacterEscape = function(state) {
    return (
      this.regexp_eatControlEscape(state) ||
      this.regexp_eatCControlLetter(state) ||
      this.regexp_eatZero(state) ||
      this.regexp_eatHexEscapeSequence(state) ||
      this.regexp_eatRegExpUnicodeEscapeSequence(state, false) ||
      (!state.switchU && this.regexp_eatLegacyOctalEscapeSequence(state)) ||
      this.regexp_eatIdentityEscape(state)
    )
  };
  pp$1.regexp_eatCControlLetter = function(state) {
    var start = state.pos;
    if (state.eat(0x63 /* c */)) {
      if (this.regexp_eatControlLetter(state)) {
        return true
      }
      state.pos = start;
    }
    return false
  };
  pp$1.regexp_eatZero = function(state) {
    if (state.current() === 0x30 /* 0 */ && !isDecimalDigit(state.lookahead())) {
      state.lastIntValue = 0;
      state.advance();
      return true
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-ControlEscape
  pp$1.regexp_eatControlEscape = function(state) {
    var ch = state.current();
    if (ch === 0x74 /* t */) {
      state.lastIntValue = 0x09; /* \t */
      state.advance();
      return true
    }
    if (ch === 0x6E /* n */) {
      state.lastIntValue = 0x0A; /* \n */
      state.advance();
      return true
    }
    if (ch === 0x76 /* v */) {
      state.lastIntValue = 0x0B; /* \v */
      state.advance();
      return true
    }
    if (ch === 0x66 /* f */) {
      state.lastIntValue = 0x0C; /* \f */
      state.advance();
      return true
    }
    if (ch === 0x72 /* r */) {
      state.lastIntValue = 0x0D; /* \r */
      state.advance();
      return true
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-ControlLetter
  pp$1.regexp_eatControlLetter = function(state) {
    var ch = state.current();
    if (isControlLetter(ch)) {
      state.lastIntValue = ch % 0x20;
      state.advance();
      return true
    }
    return false
  };
  function isControlLetter(ch) {
    return (
      (ch >= 0x41 /* A */ && ch <= 0x5A /* Z */) ||
      (ch >= 0x61 /* a */ && ch <= 0x7A /* z */)
    )
  }

  // https://www.ecma-international.org/ecma-262/8.0/#prod-RegExpUnicodeEscapeSequence
  pp$1.regexp_eatRegExpUnicodeEscapeSequence = function(state, forceU) {
    if ( forceU === void 0 ) forceU = false;

    var start = state.pos;
    var switchU = forceU || state.switchU;

    if (state.eat(0x75 /* u */)) {
      if (this.regexp_eatFixedHexDigits(state, 4)) {
        var lead = state.lastIntValue;
        if (switchU && lead >= 0xD800 && lead <= 0xDBFF) {
          var leadSurrogateEnd = state.pos;
          if (state.eat(0x5C /* \ */) && state.eat(0x75 /* u */) && this.regexp_eatFixedHexDigits(state, 4)) {
            var trail = state.lastIntValue;
            if (trail >= 0xDC00 && trail <= 0xDFFF) {
              state.lastIntValue = (lead - 0xD800) * 0x400 + (trail - 0xDC00) + 0x10000;
              return true
            }
          }
          state.pos = leadSurrogateEnd;
          state.lastIntValue = lead;
        }
        return true
      }
      if (
        switchU &&
        state.eat(0x7B /* { */) &&
        this.regexp_eatHexDigits(state) &&
        state.eat(0x7D /* } */) &&
        isValidUnicode(state.lastIntValue)
      ) {
        return true
      }
      if (switchU) {
        state.raise("Invalid unicode escape");
      }
      state.pos = start;
    }

    return false
  };
  function isValidUnicode(ch) {
    return ch >= 0 && ch <= 0x10FFFF
  }

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-IdentityEscape
  pp$1.regexp_eatIdentityEscape = function(state) {
    if (state.switchU) {
      if (this.regexp_eatSyntaxCharacter(state)) {
        return true
      }
      if (state.eat(0x2F /* / */)) {
        state.lastIntValue = 0x2F; /* / */
        return true
      }
      return false
    }

    var ch = state.current();
    if (ch !== 0x63 /* c */ && (!state.switchN || ch !== 0x6B /* k */)) {
      state.lastIntValue = ch;
      state.advance();
      return true
    }

    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-DecimalEscape
  pp$1.regexp_eatDecimalEscape = function(state) {
    state.lastIntValue = 0;
    var ch = state.current();
    if (ch >= 0x31 /* 1 */ && ch <= 0x39 /* 9 */) {
      do {
        state.lastIntValue = 10 * state.lastIntValue + (ch - 0x30 /* 0 */);
        state.advance();
      } while ((ch = state.current()) >= 0x30 /* 0 */ && ch <= 0x39 /* 9 */)
      return true
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-CharacterClassEscape
  pp$1.regexp_eatCharacterClassEscape = function(state) {
    var ch = state.current();

    if (isCharacterClassEscape(ch)) {
      state.lastIntValue = -1;
      state.advance();
      return true
    }

    if (
      state.switchU &&
      this.options.ecmaVersion >= 9 &&
      (ch === 0x50 /* P */ || ch === 0x70 /* p */)
    ) {
      state.lastIntValue = -1;
      state.advance();
      if (
        state.eat(0x7B /* { */) &&
        this.regexp_eatUnicodePropertyValueExpression(state) &&
        state.eat(0x7D /* } */)
      ) {
        return true
      }
      state.raise("Invalid property name");
    }

    return false
  };
  function isCharacterClassEscape(ch) {
    return (
      ch === 0x64 /* d */ ||
      ch === 0x44 /* D */ ||
      ch === 0x73 /* s */ ||
      ch === 0x53 /* S */ ||
      ch === 0x77 /* w */ ||
      ch === 0x57 /* W */
    )
  }

  // UnicodePropertyValueExpression ::
  //   UnicodePropertyName `=` UnicodePropertyValue
  //   LoneUnicodePropertyNameOrValue
  pp$1.regexp_eatUnicodePropertyValueExpression = function(state) {
    var start = state.pos;

    // UnicodePropertyName `=` UnicodePropertyValue
    if (this.regexp_eatUnicodePropertyName(state) && state.eat(0x3D /* = */)) {
      var name = state.lastStringValue;
      if (this.regexp_eatUnicodePropertyValue(state)) {
        var value = state.lastStringValue;
        this.regexp_validateUnicodePropertyNameAndValue(state, name, value);
        return true
      }
    }
    state.pos = start;

    // LoneUnicodePropertyNameOrValue
    if (this.regexp_eatLoneUnicodePropertyNameOrValue(state)) {
      var nameOrValue = state.lastStringValue;
      this.regexp_validateUnicodePropertyNameOrValue(state, nameOrValue);
      return true
    }
    return false
  };
  pp$1.regexp_validateUnicodePropertyNameAndValue = function(state, name, value) {
    if (!hasOwn(state.unicodeProperties.nonBinary, name))
      { state.raise("Invalid property name"); }
    if (!state.unicodeProperties.nonBinary[name].test(value))
      { state.raise("Invalid property value"); }
  };
  pp$1.regexp_validateUnicodePropertyNameOrValue = function(state, nameOrValue) {
    if (!state.unicodeProperties.binary.test(nameOrValue))
      { state.raise("Invalid property name"); }
  };

  // UnicodePropertyName ::
  //   UnicodePropertyNameCharacters
  pp$1.regexp_eatUnicodePropertyName = function(state) {
    var ch = 0;
    state.lastStringValue = "";
    while (isUnicodePropertyNameCharacter(ch = state.current())) {
      state.lastStringValue += codePointToString$1(ch);
      state.advance();
    }
    return state.lastStringValue !== ""
  };
  function isUnicodePropertyNameCharacter(ch) {
    return isControlLetter(ch) || ch === 0x5F /* _ */
  }

  // UnicodePropertyValue ::
  //   UnicodePropertyValueCharacters
  pp$1.regexp_eatUnicodePropertyValue = function(state) {
    var ch = 0;
    state.lastStringValue = "";
    while (isUnicodePropertyValueCharacter(ch = state.current())) {
      state.lastStringValue += codePointToString$1(ch);
      state.advance();
    }
    return state.lastStringValue !== ""
  };
  function isUnicodePropertyValueCharacter(ch) {
    return isUnicodePropertyNameCharacter(ch) || isDecimalDigit(ch)
  }

  // LoneUnicodePropertyNameOrValue ::
  //   UnicodePropertyValueCharacters
  pp$1.regexp_eatLoneUnicodePropertyNameOrValue = function(state) {
    return this.regexp_eatUnicodePropertyValue(state)
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-CharacterClass
  pp$1.regexp_eatCharacterClass = function(state) {
    if (state.eat(0x5B /* [ */)) {
      state.eat(0x5E /* ^ */);
      this.regexp_classRanges(state);
      if (state.eat(0x5D /* ] */)) {
        return true
      }
      // Unreachable since it threw "unterminated regular expression" error before.
      state.raise("Unterminated character class");
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-ClassRanges
  // https://www.ecma-international.org/ecma-262/8.0/#prod-NonemptyClassRanges
  // https://www.ecma-international.org/ecma-262/8.0/#prod-NonemptyClassRangesNoDash
  pp$1.regexp_classRanges = function(state) {
    while (this.regexp_eatClassAtom(state)) {
      var left = state.lastIntValue;
      if (state.eat(0x2D /* - */) && this.regexp_eatClassAtom(state)) {
        var right = state.lastIntValue;
        if (state.switchU && (left === -1 || right === -1)) {
          state.raise("Invalid character class");
        }
        if (left !== -1 && right !== -1 && left > right) {
          state.raise("Range out of order in character class");
        }
      }
    }
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-ClassAtom
  // https://www.ecma-international.org/ecma-262/8.0/#prod-ClassAtomNoDash
  pp$1.regexp_eatClassAtom = function(state) {
    var start = state.pos;

    if (state.eat(0x5C /* \ */)) {
      if (this.regexp_eatClassEscape(state)) {
        return true
      }
      if (state.switchU) {
        // Make the same message as V8.
        var ch$1 = state.current();
        if (ch$1 === 0x63 /* c */ || isOctalDigit(ch$1)) {
          state.raise("Invalid class escape");
        }
        state.raise("Invalid escape");
      }
      state.pos = start;
    }

    var ch = state.current();
    if (ch !== 0x5D /* ] */) {
      state.lastIntValue = ch;
      state.advance();
      return true
    }

    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-ClassEscape
  pp$1.regexp_eatClassEscape = function(state) {
    var start = state.pos;

    if (state.eat(0x62 /* b */)) {
      state.lastIntValue = 0x08; /* <BS> */
      return true
    }

    if (state.switchU && state.eat(0x2D /* - */)) {
      state.lastIntValue = 0x2D; /* - */
      return true
    }

    if (!state.switchU && state.eat(0x63 /* c */)) {
      if (this.regexp_eatClassControlLetter(state)) {
        return true
      }
      state.pos = start;
    }

    return (
      this.regexp_eatCharacterClassEscape(state) ||
      this.regexp_eatCharacterEscape(state)
    )
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-ClassControlLetter
  pp$1.regexp_eatClassControlLetter = function(state) {
    var ch = state.current();
    if (isDecimalDigit(ch) || ch === 0x5F /* _ */) {
      state.lastIntValue = ch % 0x20;
      state.advance();
      return true
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-HexEscapeSequence
  pp$1.regexp_eatHexEscapeSequence = function(state) {
    var start = state.pos;
    if (state.eat(0x78 /* x */)) {
      if (this.regexp_eatFixedHexDigits(state, 2)) {
        return true
      }
      if (state.switchU) {
        state.raise("Invalid escape");
      }
      state.pos = start;
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-DecimalDigits
  pp$1.regexp_eatDecimalDigits = function(state) {
    var start = state.pos;
    var ch = 0;
    state.lastIntValue = 0;
    while (isDecimalDigit(ch = state.current())) {
      state.lastIntValue = 10 * state.lastIntValue + (ch - 0x30 /* 0 */);
      state.advance();
    }
    return state.pos !== start
  };
  function isDecimalDigit(ch) {
    return ch >= 0x30 /* 0 */ && ch <= 0x39 /* 9 */
  }

  // https://www.ecma-international.org/ecma-262/8.0/#prod-HexDigits
  pp$1.regexp_eatHexDigits = function(state) {
    var start = state.pos;
    var ch = 0;
    state.lastIntValue = 0;
    while (isHexDigit(ch = state.current())) {
      state.lastIntValue = 16 * state.lastIntValue + hexToInt(ch);
      state.advance();
    }
    return state.pos !== start
  };
  function isHexDigit(ch) {
    return (
      (ch >= 0x30 /* 0 */ && ch <= 0x39 /* 9 */) ||
      (ch >= 0x41 /* A */ && ch <= 0x46 /* F */) ||
      (ch >= 0x61 /* a */ && ch <= 0x66 /* f */)
    )
  }
  function hexToInt(ch) {
    if (ch >= 0x41 /* A */ && ch <= 0x46 /* F */) {
      return 10 + (ch - 0x41 /* A */)
    }
    if (ch >= 0x61 /* a */ && ch <= 0x66 /* f */) {
      return 10 + (ch - 0x61 /* a */)
    }
    return ch - 0x30 /* 0 */
  }

  // https://www.ecma-international.org/ecma-262/8.0/#prod-annexB-LegacyOctalEscapeSequence
  // Allows only 0-377(octal) i.e. 0-255(decimal).
  pp$1.regexp_eatLegacyOctalEscapeSequence = function(state) {
    if (this.regexp_eatOctalDigit(state)) {
      var n1 = state.lastIntValue;
      if (this.regexp_eatOctalDigit(state)) {
        var n2 = state.lastIntValue;
        if (n1 <= 3 && this.regexp_eatOctalDigit(state)) {
          state.lastIntValue = n1 * 64 + n2 * 8 + state.lastIntValue;
        } else {
          state.lastIntValue = n1 * 8 + n2;
        }
      } else {
        state.lastIntValue = n1;
      }
      return true
    }
    return false
  };

  // https://www.ecma-international.org/ecma-262/8.0/#prod-OctalDigit
  pp$1.regexp_eatOctalDigit = function(state) {
    var ch = state.current();
    if (isOctalDigit(ch)) {
      state.lastIntValue = ch - 0x30; /* 0 */
      state.advance();
      return true
    }
    state.lastIntValue = 0;
    return false
  };
  function isOctalDigit(ch) {
    return ch >= 0x30 /* 0 */ && ch <= 0x37 /* 7 */
  }

  // https://www.ecma-international.org/ecma-262/8.0/#prod-Hex4Digits
  // https://www.ecma-international.org/ecma-262/8.0/#prod-HexDigit
  // And HexDigit HexDigit in https://www.ecma-international.org/ecma-262/8.0/#prod-HexEscapeSequence
  pp$1.regexp_eatFixedHexDigits = function(state, length) {
    var start = state.pos;
    state.lastIntValue = 0;
    for (var i = 0; i < length; ++i) {
      var ch = state.current();
      if (!isHexDigit(ch)) {
        state.pos = start;
        return false
      }
      state.lastIntValue = 16 * state.lastIntValue + hexToInt(ch);
      state.advance();
    }
    return true
  };

  // Object type used to represent tokens. Note that normally, tokens
  // simply exist as properties on the parser object. This is only
  // used for the onToken callback and the external tokenizer.

  var Token = function Token(p) {
    this.type = p.type;
    this.value = p.value;
    this.start = p.start;
    this.end = p.end;
    if (p.options.locations)
      { this.loc = new SourceLocation(p, p.startLoc, p.endLoc); }
    if (p.options.ranges)
      { this.range = [p.start, p.end]; }
  };

  // ## Tokenizer

  var pp = Parser.prototype;

  // Move to the next token

  pp.next = function(ignoreEscapeSequenceInKeyword) {
    if (!ignoreEscapeSequenceInKeyword && this.type.keyword && this.containsEsc)
      { this.raiseRecoverable(this.start, "Escape sequence in keyword " + this.type.keyword); }
    if (this.options.onToken)
      { this.options.onToken(new Token(this)); }

    this.lastTokEnd = this.end;
    this.lastTokStart = this.start;
    this.lastTokEndLoc = this.endLoc;
    this.lastTokStartLoc = this.startLoc;
    this.nextToken();
  };

  pp.getToken = function() {
    this.next();
    return new Token(this)
  };

  // If we're in an ES6 environment, make parsers iterable
  if (typeof Symbol !== "undefined")
    { pp[Symbol.iterator] = function() {
      var this$1$1 = this;

      return {
        next: function () {
          var token = this$1$1.getToken();
          return {
            done: token.type === types$1.eof,
            value: token
          }
        }
      }
    }; }

  // Toggle strict mode. Re-reads the next number or string to please
  // pedantic tests (`"use strict"; 010;` should fail).

  // Read a single token, updating the parser object's token-related
  // properties.

  pp.nextToken = function() {
    var curContext = this.curContext();
    if (!curContext || !curContext.preserveSpace) { this.skipSpace(); }

    this.start = this.pos;
    if (this.options.locations) { this.startLoc = this.curPosition(); }
    if (this.pos >= this.input.length) { return this.finishToken(types$1.eof) }

    if (curContext.override) { return curContext.override(this) }
    else { this.readToken(this.fullCharCodeAtPos()); }
  };

  pp.readToken = function(code) {
    // Identifier or keyword. '\uXXXX' sequences are allowed in
    // identifiers, so '\' also dispatches to that.
    if (isIdentifierStart(code, this.options.ecmaVersion >= 6) || code === 92 /* '\' */)
      { return this.readWord() }

    return this.getTokenFromCode(code)
  };

  pp.fullCharCodeAtPos = function() {
    var code = this.input.charCodeAt(this.pos);
    if (code <= 0xd7ff || code >= 0xdc00) { return code }
    var next = this.input.charCodeAt(this.pos + 1);
    return next <= 0xdbff || next >= 0xe000 ? code : (code << 10) + next - 0x35fdc00
  };

  pp.skipBlockComment = function() {
    var startLoc = this.options.onComment && this.curPosition();
    var start = this.pos, end = this.input.indexOf("*/", this.pos += 2);
    if (end === -1) { this.raise(this.pos - 2, "Unterminated comment"); }
    this.pos = end + 2;
    if (this.options.locations) {
      for (var nextBreak = (void 0), pos = start; (nextBreak = nextLineBreak(this.input, pos, this.pos)) > -1;) {
        ++this.curLine;
        pos = this.lineStart = nextBreak;
      }
    }
    if (this.options.onComment)
      { this.options.onComment(true, this.input.slice(start + 2, end), start, this.pos,
                             startLoc, this.curPosition()); }
  };

  pp.skipLineComment = function(startSkip) {
    var start = this.pos;
    var startLoc = this.options.onComment && this.curPosition();
    var ch = this.input.charCodeAt(this.pos += startSkip);
    while (this.pos < this.input.length && !isNewLine(ch)) {
      ch = this.input.charCodeAt(++this.pos);
    }
    if (this.options.onComment)
      { this.options.onComment(false, this.input.slice(start + startSkip, this.pos), start, this.pos,
                             startLoc, this.curPosition()); }
  };

  // Called at the start of the parse and after every token. Skips
  // whitespace and comments, and.

  pp.skipSpace = function() {
    loop: while (this.pos < this.input.length) {
      var ch = this.input.charCodeAt(this.pos);
      switch (ch) {
      case 32: case 160: // ' '
        ++this.pos;
        break
      case 13:
        if (this.input.charCodeAt(this.pos + 1) === 10) {
          ++this.pos;
        }
      case 10: case 8232: case 8233:
        ++this.pos;
        if (this.options.locations) {
          ++this.curLine;
          this.lineStart = this.pos;
        }
        break
      case 47: // '/'
        switch (this.input.charCodeAt(this.pos + 1)) {
        case 42: // '*'
          this.skipBlockComment();
          break
        case 47:
          this.skipLineComment(2);
          break
        default:
          break loop
        }
        break
      default:
        if (ch > 8 && ch < 14 || ch >= 5760 && nonASCIIwhitespace.test(String.fromCharCode(ch))) {
          ++this.pos;
        } else {
          break loop
        }
      }
    }
  };

  // Called at the end of every token. Sets `end`, `val`, and
  // maintains `context` and `exprAllowed`, and skips the space after
  // the token, so that the next one's `start` will point at the
  // right position.

  pp.finishToken = function(type, val) {
    this.end = this.pos;
    if (this.options.locations) { this.endLoc = this.curPosition(); }
    var prevType = this.type;
    this.type = type;
    this.value = val;

    this.updateContext(prevType);
  };

  // ### Token reading

  // This is the function that is called to fetch the next token. It
  // is somewhat obscure, because it works in character codes rather
  // than characters, and because operator parsing has been inlined
  // into it.
  //
  // All in the name of speed.
  //
  pp.readToken_dot = function() {
    var next = this.input.charCodeAt(this.pos + 1);
    if (next >= 48 && next <= 57) { return this.readNumber(true) }
    var next2 = this.input.charCodeAt(this.pos + 2);
    if (this.options.ecmaVersion >= 6 && next === 46 && next2 === 46) { // 46 = dot '.'
      this.pos += 3;
      return this.finishToken(types$1.ellipsis)
    } else {
      ++this.pos;
      return this.finishToken(types$1.dot)
    }
  };

  pp.readToken_slash = function() { // '/'
    var next = this.input.charCodeAt(this.pos + 1);
    if (this.exprAllowed) { ++this.pos; return this.readRegexp() }
    if (next === 61) { return this.finishOp(types$1.assign, 2) }
    return this.finishOp(types$1.slash, 1)
  };

  pp.readToken_mult_modulo_exp = function(code) { // '%*'
    var next = this.input.charCodeAt(this.pos + 1);
    var size = 1;
    var tokentype = code === 42 ? types$1.star : types$1.modulo;

    // exponentiation operator ** and **=
    if (this.options.ecmaVersion >= 7 && code === 42 && next === 42) {
      ++size;
      tokentype = types$1.starstar;
      next = this.input.charCodeAt(this.pos + 2);
    }

    if (next === 61) { return this.finishOp(types$1.assign, size + 1) }
    return this.finishOp(tokentype, size)
  };

  pp.readToken_pipe_amp = function(code) { // '|&'
    var next = this.input.charCodeAt(this.pos + 1);
    if (next === code) {
      if (this.options.ecmaVersion >= 12) {
        var next2 = this.input.charCodeAt(this.pos + 2);
        if (next2 === 61) { return this.finishOp(types$1.assign, 3) }
      }
      return this.finishOp(code === 124 ? types$1.logicalOR : types$1.logicalAND, 2)
    }
    if (next === 61) { return this.finishOp(types$1.assign, 2) }
    return this.finishOp(code === 124 ? types$1.bitwiseOR : types$1.bitwiseAND, 1)
  };

  pp.readToken_caret = function() { // '^'
    var next = this.input.charCodeAt(this.pos + 1);
    if (next === 61) { return this.finishOp(types$1.assign, 2) }
    return this.finishOp(types$1.bitwiseXOR, 1)
  };

  pp.readToken_plus_min = function(code) { // '+-'
    var next = this.input.charCodeAt(this.pos + 1);
    if (next === code) {
      if (next === 45 && !this.inModule && this.input.charCodeAt(this.pos + 2) === 62 &&
          (this.lastTokEnd === 0 || lineBreak.test(this.input.slice(this.lastTokEnd, this.pos)))) {
        // A `-->` line comment
        this.skipLineComment(3);
        this.skipSpace();
        return this.nextToken()
      }
      return this.finishOp(types$1.incDec, 2)
    }
    if (next === 61) { return this.finishOp(types$1.assign, 2) }
    return this.finishOp(types$1.plusMin, 1)
  };

  pp.readToken_lt_gt = function(code) { // '<>'
    var next = this.input.charCodeAt(this.pos + 1);
    var size = 1;
    if (next === code) {
      size = code === 62 && this.input.charCodeAt(this.pos + 2) === 62 ? 3 : 2;
      if (this.input.charCodeAt(this.pos + size) === 61) { return this.finishOp(types$1.assign, size + 1) }
      return this.finishOp(types$1.bitShift, size)
    }
    if (next === 33 && code === 60 && !this.inModule && this.input.charCodeAt(this.pos + 2) === 45 &&
        this.input.charCodeAt(this.pos + 3) === 45) {
      // `<!--`, an XML-style comment that should be interpreted as a line comment
      this.skipLineComment(4);
      this.skipSpace();
      return this.nextToken()
    }
    if (next === 61) { size = 2; }
    return this.finishOp(types$1.relational, size)
  };

  pp.readToken_eq_excl = function(code) { // '=!'
    var next = this.input.charCodeAt(this.pos + 1);
    if (next === 61) { return this.finishOp(types$1.equality, this.input.charCodeAt(this.pos + 2) === 61 ? 3 : 2) }
    if (code === 61 && next === 62 && this.options.ecmaVersion >= 6) { // '=>'
      this.pos += 2;
      return this.finishToken(types$1.arrow)
    }
    return this.finishOp(code === 61 ? types$1.eq : types$1.prefix, 1)
  };

  pp.readToken_question = function() { // '?'
    var ecmaVersion = this.options.ecmaVersion;
    if (ecmaVersion >= 11) {
      var next = this.input.charCodeAt(this.pos + 1);
      if (next === 46) {
        var next2 = this.input.charCodeAt(this.pos + 2);
        if (next2 < 48 || next2 > 57) { return this.finishOp(types$1.questionDot, 2) }
      }
      if (next === 63) {
        if (ecmaVersion >= 12) {
          var next2$1 = this.input.charCodeAt(this.pos + 2);
          if (next2$1 === 61) { return this.finishOp(types$1.assign, 3) }
        }
        return this.finishOp(types$1.coalesce, 2)
      }
    }
    return this.finishOp(types$1.question, 1)
  };

  pp.readToken_numberSign = function() { // '#'
    var ecmaVersion = this.options.ecmaVersion;
    var code = 35; // '#'
    if (ecmaVersion >= 13) {
      ++this.pos;
      code = this.fullCharCodeAtPos();
      if (isIdentifierStart(code, true) || code === 92 /* '\' */) {
        return this.finishToken(types$1.privateId, this.readWord1())
      }
    }

    this.raise(this.pos, "Unexpected character '" + codePointToString(code) + "'");
  };

  pp.getTokenFromCode = function(code) {
    switch (code) {
    // The interpretation of a dot depends on whether it is followed
    // by a digit or another two dots.
    case 46: // '.'
      return this.readToken_dot()

    // Punctuation tokens.
    case 40: ++this.pos; return this.finishToken(types$1.parenL)
    case 41: ++this.pos; return this.finishToken(types$1.parenR)
    case 59: ++this.pos; return this.finishToken(types$1.semi)
    case 44: ++this.pos; return this.finishToken(types$1.comma)
    case 91: ++this.pos; return this.finishToken(types$1.bracketL)
    case 93: ++this.pos; return this.finishToken(types$1.bracketR)
    case 123: ++this.pos; return this.finishToken(types$1.braceL)
    case 125: ++this.pos; return this.finishToken(types$1.braceR)
    case 58: ++this.pos; return this.finishToken(types$1.colon)

    case 96: // '`'
      if (this.options.ecmaVersion < 6) { break }
      ++this.pos;
      return this.finishToken(types$1.backQuote)

    case 48: // '0'
      var next = this.input.charCodeAt(this.pos + 1);
      if (next === 120 || next === 88) { return this.readRadixNumber(16) } // '0x', '0X' - hex number
      if (this.options.ecmaVersion >= 6) {
        if (next === 111 || next === 79) { return this.readRadixNumber(8) } // '0o', '0O' - octal number
        if (next === 98 || next === 66) { return this.readRadixNumber(2) } // '0b', '0B' - binary number
      }

    // Anything else beginning with a digit is an integer, octal
    // number, or float.
    case 49: case 50: case 51: case 52: case 53: case 54: case 55: case 56: case 57: // 1-9
      return this.readNumber(false)

    // Quotes produce strings.
    case 34: case 39: // '"', "'"
      return this.readString(code)

    // Operators are parsed inline in tiny state machines. '=' (61) is
    // often referred to. `finishOp` simply skips the amount of
    // characters it is given as second argument, and returns a token
    // of the type given by its first argument.
    case 47: // '/'
      return this.readToken_slash()

    case 37: case 42: // '%*'
      return this.readToken_mult_modulo_exp(code)

    case 124: case 38: // '|&'
      return this.readToken_pipe_amp(code)

    case 94: // '^'
      return this.readToken_caret()

    case 43: case 45: // '+-'
      return this.readToken_plus_min(code)

    case 60: case 62: // '<>'
      return this.readToken_lt_gt(code)

    case 61: case 33: // '=!'
      return this.readToken_eq_excl(code)

    case 63: // '?'
      return this.readToken_question()

    case 126: // '~'
      return this.finishOp(types$1.prefix, 1)

    case 35: // '#'
      return this.readToken_numberSign()
    }

    this.raise(this.pos, "Unexpected character '" + codePointToString(code) + "'");
  };

  pp.finishOp = function(type, size) {
    var str = this.input.slice(this.pos, this.pos + size);
    this.pos += size;
    return this.finishToken(type, str)
  };

  pp.readRegexp = function() {
    var escaped, inClass, start = this.pos;
    for (;;) {
      if (this.pos >= this.input.length) { this.raise(start, "Unterminated regular expression"); }
      var ch = this.input.charAt(this.pos);
      if (lineBreak.test(ch)) { this.raise(start, "Unterminated regular expression"); }
      if (!escaped) {
        if (ch === "[") { inClass = true; }
        else if (ch === "]" && inClass) { inClass = false; }
        else if (ch === "/" && !inClass) { break }
        escaped = ch === "\\";
      } else { escaped = false; }
      ++this.pos;
    }
    var pattern = this.input.slice(start, this.pos);
    ++this.pos;
    var flagsStart = this.pos;
    var flags = this.readWord1();
    if (this.containsEsc) { this.unexpected(flagsStart); }

    // Validate pattern
    var state = this.regexpState || (this.regexpState = new RegExpValidationState(this));
    state.reset(start, pattern, flags);
    this.validateRegExpFlags(state);
    this.validateRegExpPattern(state);

    // Create Literal#value property value.
    var value = null;
    try {
      value = new RegExp(pattern, flags);
    } catch (e) {
      // ESTree requires null if it failed to instantiate RegExp object.
      // https://github.com/estree/estree/blob/a27003adf4fd7bfad44de9cef372a2eacd527b1c/es5.md#regexpliteral
    }

    return this.finishToken(types$1.regexp, {pattern: pattern, flags: flags, value: value})
  };

  // Read an integer in the given radix. Return null if zero digits
  // were read, the integer value otherwise. When `len` is given, this
  // will return `null` unless the integer has exactly `len` digits.

  pp.readInt = function(radix, len, maybeLegacyOctalNumericLiteral) {
    // `len` is used for character escape sequences. In that case, disallow separators.
    var allowSeparators = this.options.ecmaVersion >= 12 && len === undefined;

    // `maybeLegacyOctalNumericLiteral` is true if it doesn't have prefix (0x,0o,0b)
    // and isn't fraction part nor exponent part. In that case, if the first digit
    // is zero then disallow separators.
    var isLegacyOctalNumericLiteral = maybeLegacyOctalNumericLiteral && this.input.charCodeAt(this.pos) === 48;

    var start = this.pos, total = 0, lastCode = 0;
    for (var i = 0, e = len == null ? Infinity : len; i < e; ++i, ++this.pos) {
      var code = this.input.charCodeAt(this.pos), val = (void 0);

      if (allowSeparators && code === 95) {
        if (isLegacyOctalNumericLiteral) { this.raiseRecoverable(this.pos, "Numeric separator is not allowed in legacy octal numeric literals"); }
        if (lastCode === 95) { this.raiseRecoverable(this.pos, "Numeric separator must be exactly one underscore"); }
        if (i === 0) { this.raiseRecoverable(this.pos, "Numeric separator is not allowed at the first of digits"); }
        lastCode = code;
        continue
      }

      if (code >= 97) { val = code - 97 + 10; } // a
      else if (code >= 65) { val = code - 65 + 10; } // A
      else if (code >= 48 && code <= 57) { val = code - 48; } // 0-9
      else { val = Infinity; }
      if (val >= radix) { break }
      lastCode = code;
      total = total * radix + val;
    }

    if (allowSeparators && lastCode === 95) { this.raiseRecoverable(this.pos - 1, "Numeric separator is not allowed at the last of digits"); }
    if (this.pos === start || len != null && this.pos - start !== len) { return null }

    return total
  };

  function stringToNumber(str, isLegacyOctalNumericLiteral) {
    if (isLegacyOctalNumericLiteral) {
      return parseInt(str, 8)
    }

    // `parseFloat(value)` stops parsing at the first numeric separator then returns a wrong value.
    return parseFloat(str.replace(/_/g, ""))
  }

  function stringToBigInt(str) {
    if (typeof BigInt !== "function") {
      return null
    }

    // `BigInt(value)` throws syntax error if the string contains numeric separators.
    return BigInt(str.replace(/_/g, ""))
  }

  pp.readRadixNumber = function(radix) {
    var start = this.pos;
    this.pos += 2; // 0x
    var val = this.readInt(radix);
    if (val == null) { this.raise(this.start + 2, "Expected number in radix " + radix); }
    if (this.options.ecmaVersion >= 11 && this.input.charCodeAt(this.pos) === 110) {
      val = stringToBigInt(this.input.slice(start, this.pos));
      ++this.pos;
    } else if (isIdentifierStart(this.fullCharCodeAtPos())) { this.raise(this.pos, "Identifier directly after number"); }
    return this.finishToken(types$1.num, val)
  };

  // Read an integer, octal integer, or floating-point number.

  pp.readNumber = function(startsWithDot) {
    var start = this.pos;
    if (!startsWithDot && this.readInt(10, undefined, true) === null) { this.raise(start, "Invalid number"); }
    var octal = this.pos - start >= 2 && this.input.charCodeAt(start) === 48;
    if (octal && this.strict) { this.raise(start, "Invalid number"); }
    var next = this.input.charCodeAt(this.pos);
    if (!octal && !startsWithDot && this.options.ecmaVersion >= 11 && next === 110) {
      var val$1 = stringToBigInt(this.input.slice(start, this.pos));
      ++this.pos;
      if (isIdentifierStart(this.fullCharCodeAtPos())) { this.raise(this.pos, "Identifier directly after number"); }
      return this.finishToken(types$1.num, val$1)
    }
    if (octal && /[89]/.test(this.input.slice(start, this.pos))) { octal = false; }
    if (next === 46 && !octal) { // '.'
      ++this.pos;
      this.readInt(10);
      next = this.input.charCodeAt(this.pos);
    }
    if ((next === 69 || next === 101) && !octal) { // 'eE'
      next = this.input.charCodeAt(++this.pos);
      if (next === 43 || next === 45) { ++this.pos; } // '+-'
      if (this.readInt(10) === null) { this.raise(start, "Invalid number"); }
    }
    if (isIdentifierStart(this.fullCharCodeAtPos())) { this.raise(this.pos, "Identifier directly after number"); }

    var val = stringToNumber(this.input.slice(start, this.pos), octal);
    return this.finishToken(types$1.num, val)
  };

  // Read a string value, interpreting backslash-escapes.

  pp.readCodePoint = function() {
    var ch = this.input.charCodeAt(this.pos), code;

    if (ch === 123) { // '{'
      if (this.options.ecmaVersion < 6) { this.unexpected(); }
      var codePos = ++this.pos;
      code = this.readHexChar(this.input.indexOf("}", this.pos) - this.pos);
      ++this.pos;
      if (code > 0x10FFFF) { this.invalidStringToken(codePos, "Code point out of bounds"); }
    } else {
      code = this.readHexChar(4);
    }
    return code
  };

  function codePointToString(code) {
    // UTF-16 Decoding
    if (code <= 0xFFFF) { return String.fromCharCode(code) }
    code -= 0x10000;
    return String.fromCharCode((code >> 10) + 0xD800, (code & 1023) + 0xDC00)
  }

  pp.readString = function(quote) {
    var out = "", chunkStart = ++this.pos;
    for (;;) {
      if (this.pos >= this.input.length) { this.raise(this.start, "Unterminated string constant"); }
      var ch = this.input.charCodeAt(this.pos);
      if (ch === quote) { break }
      if (ch === 92) { // '\'
        out += this.input.slice(chunkStart, this.pos);
        out += this.readEscapedChar(false);
        chunkStart = this.pos;
      } else if (ch === 0x2028 || ch === 0x2029) {
        if (this.options.ecmaVersion < 10) { this.raise(this.start, "Unterminated string constant"); }
        ++this.pos;
        if (this.options.locations) {
          this.curLine++;
          this.lineStart = this.pos;
        }
      } else {
        if (isNewLine(ch)) { this.raise(this.start, "Unterminated string constant"); }
        ++this.pos;
      }
    }
    out += this.input.slice(chunkStart, this.pos++);
    return this.finishToken(types$1.string, out)
  };

  // Reads template string tokens.

  var INVALID_TEMPLATE_ESCAPE_ERROR = {};

  pp.tryReadTemplateToken = function() {
    this.inTemplateElement = true;
    try {
      this.readTmplToken();
    } catch (err) {
      if (err === INVALID_TEMPLATE_ESCAPE_ERROR) {
        this.readInvalidTemplateToken();
      } else {
        throw err
      }
    }

    this.inTemplateElement = false;
  };

  pp.invalidStringToken = function(position, message) {
    if (this.inTemplateElement && this.options.ecmaVersion >= 9) {
      throw INVALID_TEMPLATE_ESCAPE_ERROR
    } else {
      this.raise(position, message);
    }
  };

  pp.readTmplToken = function() {
    var out = "", chunkStart = this.pos;
    for (;;) {
      if (this.pos >= this.input.length) { this.raise(this.start, "Unterminated template"); }
      var ch = this.input.charCodeAt(this.pos);
      if (ch === 96 || ch === 36 && this.input.charCodeAt(this.pos + 1) === 123) { // '`', '${'
        if (this.pos === this.start && (this.type === types$1.template || this.type === types$1.invalidTemplate)) {
          if (ch === 36) {
            this.pos += 2;
            return this.finishToken(types$1.dollarBraceL)
          } else {
            ++this.pos;
            return this.finishToken(types$1.backQuote)
          }
        }
        out += this.input.slice(chunkStart, this.pos);
        return this.finishToken(types$1.template, out)
      }
      if (ch === 92) { // '\'
        out += this.input.slice(chunkStart, this.pos);
        out += this.readEscapedChar(true);
        chunkStart = this.pos;
      } else if (isNewLine(ch)) {
        out += this.input.slice(chunkStart, this.pos);
        ++this.pos;
        switch (ch) {
        case 13:
          if (this.input.charCodeAt(this.pos) === 10) { ++this.pos; }
        case 10:
          out += "\n";
          break
        default:
          out += String.fromCharCode(ch);
          break
        }
        if (this.options.locations) {
          ++this.curLine;
          this.lineStart = this.pos;
        }
        chunkStart = this.pos;
      } else {
        ++this.pos;
      }
    }
  };

  // Reads a template token to search for the end, without validating any escape sequences
  pp.readInvalidTemplateToken = function() {
    for (; this.pos < this.input.length; this.pos++) {
      switch (this.input[this.pos]) {
      case "\\":
        ++this.pos;
        break

      case "$":
        if (this.input[this.pos + 1] !== "{") {
          break
        }

      // falls through
      case "`":
        return this.finishToken(types$1.invalidTemplate, this.input.slice(this.start, this.pos))

      // no default
      }
    }
    this.raise(this.start, "Unterminated template");
  };

  // Used to read escaped characters

  pp.readEscapedChar = function(inTemplate) {
    var ch = this.input.charCodeAt(++this.pos);
    ++this.pos;
    switch (ch) {
    case 110: return "\n" // 'n' -> '\n'
    case 114: return "\r" // 'r' -> '\r'
    case 120: return String.fromCharCode(this.readHexChar(2)) // 'x'
    case 117: return codePointToString(this.readCodePoint()) // 'u'
    case 116: return "\t" // 't' -> '\t'
    case 98: return "\b" // 'b' -> '\b'
    case 118: return "\u000b" // 'v' -> '\u000b'
    case 102: return "\f" // 'f' -> '\f'
    case 13: if (this.input.charCodeAt(this.pos) === 10) { ++this.pos; } // '\r\n'
    case 10: // ' \n'
      if (this.options.locations) { this.lineStart = this.pos; ++this.curLine; }
      return ""
    case 56:
    case 57:
      if (this.strict) {
        this.invalidStringToken(
          this.pos - 1,
          "Invalid escape sequence"
        );
      }
      if (inTemplate) {
        var codePos = this.pos - 1;

        this.invalidStringToken(
          codePos,
          "Invalid escape sequence in template string"
        );

        return null
      }
    default:
      if (ch >= 48 && ch <= 55) {
        var octalStr = this.input.substr(this.pos - 1, 3).match(/^[0-7]+/)[0];
        var octal = parseInt(octalStr, 8);
        if (octal > 255) {
          octalStr = octalStr.slice(0, -1);
          octal = parseInt(octalStr, 8);
        }
        this.pos += octalStr.length - 1;
        ch = this.input.charCodeAt(this.pos);
        if ((octalStr !== "0" || ch === 56 || ch === 57) && (this.strict || inTemplate)) {
          this.invalidStringToken(
            this.pos - 1 - octalStr.length,
            inTemplate
              ? "Octal literal in template string"
              : "Octal literal in strict mode"
          );
        }
        return String.fromCharCode(octal)
      }
      if (isNewLine(ch)) {
        // Unicode new line characters after \ get removed from output in both
        // template literals and strings
        return ""
      }
      return String.fromCharCode(ch)
    }
  };

  // Used to read character escape sequences ('\x', '\u', '\U').

  pp.readHexChar = function(len) {
    var codePos = this.pos;
    var n = this.readInt(16, len);
    if (n === null) { this.invalidStringToken(codePos, "Bad character escape sequence"); }
    return n
  };

  // Read an identifier, and return it as a string. Sets `this.containsEsc`
  // to whether the word contained a '\u' escape.
  //
  // Incrementally adds only escaped chars, adding other chunks as-is
  // as a micro-optimization.

  pp.readWord1 = function() {
    this.containsEsc = false;
    var word = "", first = true, chunkStart = this.pos;
    var astral = this.options.ecmaVersion >= 6;
    while (this.pos < this.input.length) {
      var ch = this.fullCharCodeAtPos();
      if (isIdentifierChar(ch, astral)) {
        this.pos += ch <= 0xffff ? 1 : 2;
      } else if (ch === 92) { // "\"
        this.containsEsc = true;
        word += this.input.slice(chunkStart, this.pos);
        var escStart = this.pos;
        if (this.input.charCodeAt(++this.pos) !== 117) // "u"
          { this.invalidStringToken(this.pos, "Expecting Unicode escape sequence \\uXXXX"); }
        ++this.pos;
        var esc = this.readCodePoint();
        if (!(first ? isIdentifierStart : isIdentifierChar)(esc, astral))
          { this.invalidStringToken(escStart, "Invalid Unicode escape"); }
        word += codePointToString(esc);
        chunkStart = this.pos;
      } else {
        break
      }
      first = false;
    }
    return word + this.input.slice(chunkStart, this.pos)
  };

  // Read an identifier or keyword token. Will check for reserved
  // words when necessary.

  pp.readWord = function() {
    var word = this.readWord1();
    var type = types$1.name;
    if (this.keywords.test(word)) {
      type = keywords[word];
    }
    return this.finishToken(type, word)
  };

  // Acorn is a tiny, fast JavaScript parser written in JavaScript.

  var version = "8.7.0";

  Parser.acorn = {
    Parser: Parser,
    version: version,
    defaultOptions: defaultOptions,
    Position: Position,
    SourceLocation: SourceLocation,
    getLineInfo: getLineInfo,
    Node: Node,
    TokenType: TokenType,
    tokTypes: types$1,
    keywordTypes: keywords,
    TokContext: TokContext,
    tokContexts: types,
    isIdentifierChar: isIdentifierChar,
    isIdentifierStart: isIdentifierStart,
    Token: Token,
    isNewLine: isNewLine,
    lineBreak: lineBreak,
    lineBreakG: lineBreakG,
    nonASCIIwhitespace: nonASCIIwhitespace
  };

  // The main exported interface (under `self.acorn` when in the
  // browser) is a `parse` function that takes a code string and
  // returns an abstract syntax tree as specified by [Mozilla parser
  // API][api].
  //
  // [api]: https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API

  function parse(input, options) {
    return Parser.parse(input, options)
  }

  // This function tries to parse a single expression at a given
  // offset in a string. Useful for parsing mixed-language formats
  // that embed JavaScript expressions.

  function parseExpressionAt(input, pos, options) {
    return Parser.parseExpressionAt(input, pos, options)
  }

  // Acorn is organized as a tokenizer and a recursive-descent parser.
  // The `tokenizer` export provides an interface to the tokenizer.

  function tokenizer(input, options) {
    return Parser.tokenizer(input, options)
  }

  exports.Node = Node;
  exports.Parser = Parser;
  exports.Position = Position;
  exports.SourceLocation = SourceLocation;
  exports.TokContext = TokContext;
  exports.Token = Token;
  exports.TokenType = TokenType;
  exports.defaultOptions = defaultOptions;
  exports.getLineInfo = getLineInfo;
  exports.isIdentifierChar = isIdentifierChar;
  exports.isIdentifierStart = isIdentifierStart;
  exports.isNewLine = isNewLine;
  exports.keywordTypes = keywords;
  exports.lineBreak = lineBreak;
  exports.lineBreakG = lineBreakG;
  exports.nonASCIIwhitespace = nonASCIIwhitespace;
  exports.parse = parse;
  exports.parseExpressionAt = parseExpressionAt;
  exports.tokContexts = types;
  exports.tokTypes = types$1;
  exports.tokenizer = tokenizer;
  exports.version = version;

  Object.defineProperty(exports, '__esModule', { value: true });

}));

},{}],37:[function(require,module,exports){
(function (global, factory) {
  if (typeof define === "function" && define.amd) {
    define(['exports', './defaultTraveler', './attachComments'], factory);
  } else if (typeof exports !== "undefined") {
    factory(exports, require('./defaultTraveler'), require('./attachComments'));
  } else {
    var mod = {
      exports: {}
    };
    factory(mod.exports, global.defaultTraveler, global.attachComments);
    global.astravel = mod.exports;
  }
})(this, function (exports, _defaultTraveler, _attachComments) {
  'use strict';

  exports.__esModule = true;
  exports.makeTraveler = exports.attachComments = exports.defaultTraveler = undefined;

  var _defaultTraveler2 = _interopRequireDefault(_defaultTraveler);

  var _attachComments2 = _interopRequireDefault(_attachComments);

  function _interopRequireDefault(obj) {
    return obj && obj.__esModule ? obj : {
      default: obj
    };
  }

  // Astravel is  tiny and fast ESTree-compliant AST walker and modifier.
  //
  // Astravel was written by David Bonnet and released under an MIT license.
  //
  // The Git repository for Astravel is available at:
  // https://github.com/davidbonnet/astravel.git
  //
  // Please use the GitHub bug tracker to report issues:
  // https://github.com/davidbonnet/astravel/issues

  function makeTraveler(properties) {
    /*
    Returns a custom AST traveler that inherits from the `defaultTraveler` with its own provided `properties` and the property `super` that points to the parent traveler object.
    */
    return _defaultTraveler2.default.makeChild(properties);
  }

  exports.defaultTraveler = _defaultTraveler2.default;
  exports.attachComments = _attachComments2.default;
  exports.makeTraveler = makeTraveler;
});

},{"./attachComments":38,"./defaultTraveler":39}],38:[function(require,module,exports){
(function (global, factory) {
  if (typeof define === "function" && define.amd) {
    define(['exports', './defaultTraveler'], factory);
  } else if (typeof exports !== "undefined") {
    factory(exports, require('./defaultTraveler'));
  } else {
    var mod = {
      exports: {}
    };
    factory(mod.exports, global.defaultTraveler);
    global.attachComments = mod.exports;
  }
})(this, function (exports, _defaultTraveler) {
  'use strict';

  exports.__esModule = true;

  exports.default = function (node, comments) {
    /*
    Modifies in-place the AST starting at `node` by attaching the provided `comments` and returns that AST.
    */
    customTraveler[node.type](node, {
      comments: comments,
      index: 0
    });
    return node;
  };

  var _defaultTraveler2 = _interopRequireDefault(_defaultTraveler);

  function _interopRequireDefault(obj) {
    return obj && obj.__esModule ? obj : {
      default: obj
    };
  }

  function attachComments(parent, children, findHeadingComments, state, traveler) {
    var index = state.index,
        comments = state.comments;

    var comment = comments[index];
    // Define them in the blocks where there are used once
    // https://github.com/babel/minify/issues/485 is resolved
    var boundComments = void 0,
        trailingComments = void 0;
    if (comment != null) {
      if (children == null || children.length === 0) {
        // No children, attach comments to parent
        boundComments = parent.comments != null ? parent.comments : [];
        while (comment != null && comment.end < parent.end) {
          boundComments.push(comment);
          comment = comments[++index];
        }
        state.index = index;
        if (boundComments.length !== 0 && parent.comments == null) parent.comments = boundComments;
      } else {
        // Look for heading block comments
        if (findHeadingComments) {
          boundComments = parent.comments != null ? parent.comments : [];
          var start = children[0].start;

          while (comment != null && comment.type[0] === 'B' && comment.end < start) {
            boundComments.push(comment);
            comment = comments[++index];
          }
          if (boundComments.length !== 0 && parent.comments == null) parent.comments = boundComments;
        }
        // Attach comments to children
        for (var i = 0, length = children.length; comment != null && i < length; i++) {
          var child = children[i];
          boundComments = [];
          while (comment != null && comment.end < child.start) {
            boundComments.push(comment);
            comment = comments[++index];
          }
          // Check if next comment is line comment and on the same line
          if (comment != null && comment.type[0] === 'L') {
            if (comment.loc.start.line === child.loc.end.line) {
              boundComments.push(comment);
              comment = comments[++index];
            }
          }
          if (boundComments.length !== 0) child.comments = boundComments;
          // Travel through child
          state.index = index;
          traveler[child.type](child, state);
          index = state.index;
          comment = comments[index];
        }
        // Look for remaining comments
        trailingComments = [];
        while (comment != null && comment.end < parent.end) {
          trailingComments.push(comment);
          comment = comments[++index];
        }
        if (trailingComments.length !== 0) parent.trailingComments = trailingComments;
        state.index = index;
      }
    }
  }

  var Program = void 0;

  var customTraveler = _defaultTraveler2.default.makeChild({
    Program: Program = function Program(node, state) {
      attachComments(node, node.body, true, state, this);
    },
    BlockStatement: Program,
    ObjectExpression: function ObjectExpression(node, state) {
      attachComments(node, node.properties, true, state, this);
    },
    ArrayExpression: function ArrayExpression(node, state) {
      attachComments(node, node.elements, true, state, this);
    },
    SwitchStatement: function SwitchStatement(node, state) {
      attachComments(node, node.cases, false, state, this);
    },
    SwitchCase: function SwitchCase(node, state) {
      attachComments(node, node.consequent, false, state, this);
    }
  }
  // TODO: Consider ArrayExpression ?
  );
});

},{"./defaultTraveler":39}],39:[function(require,module,exports){
(function (global, factory) {
  if (typeof define === "function" && define.amd) {
    define(['exports'], factory);
  } else if (typeof exports !== "undefined") {
    factory(exports);
  } else {
    var mod = {
      exports: {}
    };
    factory(mod.exports);
    global.defaultTraveler = mod.exports;
  }
})(this, function (exports) {
  'use strict';

  exports.__esModule = true;

  function _classCallCheck(instance, Constructor) {
    if (!(instance instanceof Constructor)) {
      throw new TypeError("Cannot call a class as a function");
    }
  }

  var ForInStatement = void 0,
      FunctionDeclaration = void 0,
      RestElement = void 0,
      BinaryExpression = void 0,
      ArrayExpression = void 0;

  var ignore = Function.prototype;

  var Found = function Found(node, state) {
    _classCallCheck(this, Found);

    this.node = node;
    this.state = state;
  };

  exports.default = {
    // Basic methods
    go: function go(node, state) {
      /*
      Starts travelling through the specified AST `node` with the provided `state`.
      This method is recursively called by each node handler.
      */
      this[node.type](node, state);
    },
    find: function find(predicate, node, state) {
      /*
      Returns { node, state } for which `predicate(node, state)` returns truthy,
      starting at the specified AST `node` and with the provided `state`.
      Otherwise, returns `undefined`.
      */
      var finder = Object.create(this);
      finder.go = function (node, state) {
        if (predicate(node, state)) {
          throw new Found(node, state);
        }
        this[node.type](node, state);
      };
      try {
        finder.go(node, state);
      } catch (error) {
        if (error instanceof Found) {
          return error;
        } else {
          throw error;
        }
      }
    },
    makeChild: function makeChild() {
      var properties = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};

      /*
      Returns a custom AST traveler that inherits from `this` traveler with its own provided `properties` and the property `super` that points to the parent traveler object.
      */
      var traveler = Object.create(this);
      traveler.super = this;
      for (var key in properties) {
        traveler[key] = properties[key];
      }
      return traveler;
    },


    // JavaScript 5
    Program: function Program(node, state) {
      var statements = node.body,
          length = statements.length;

      for (var i = 0; i < length; i++) {
        this.go(statements[i], state);
      }
    },
    BlockStatement: function BlockStatement(node, state) {
      var statements = node.body;
      if (statements != null) {
        for (var i = 0, length = statements.length; i < length; i++) {
          this.go(statements[i], state);
        }
      }
    },

    EmptyStatement: ignore,
    ExpressionStatement: function ExpressionStatement(node, state) {
      this.go(node.expression, state);
    },
    IfStatement: function IfStatement(node, state) {
      this.go(node.test, state);
      this.go(node.consequent, state);
      if (node.alternate != null) {
        this.go(node.alternate, state);
      }
    },
    LabeledStatement: function LabeledStatement(node, state) {
      this.go(node.label, state);
      this.go(node.body, state);
    },
    BreakStatement: function BreakStatement(node, state) {
      if (node.label) {
        this.go(node.label, state);
      }
    },
    ContinueStatement: function ContinueStatement(node, state) {
      if (node.label) {
        this.go(node.label, state);
      }
    },
    WithStatement: function WithStatement(node, state) {
      this.go(node.object, state);
      this.go(node.body, state);
    },
    SwitchStatement: function SwitchStatement(node, state) {
      this.go(node.discriminant, state);
      var cases = node.cases,
          length = cases.length;

      for (var i = 0; i < length; i++) {
        this.go(cases[i], state);
      }
    },
    SwitchCase: function SwitchCase(node, state) {
      if (node.test != null) {
        this.go(node.test, state);
      }
      var statements = node.consequent,
          length = statements.length;

      for (var i = 0; i < length; i++) {
        this.go(statements[i], state);
      }
    },
    ReturnStatement: function ReturnStatement(node, state) {
      if (node.argument) {
        this.go(node.argument, state);
      }
    },
    ThrowStatement: function ThrowStatement(node, state) {
      this.go(node.argument, state);
    },
    TryStatement: function TryStatement(node, state) {
      this.go(node.block, state);
      if (node.handler != null) {
        this.go(node.handler, state);
      }
      if (node.finalizer != null) {
        this.go(node.finalizer, state);
      }
    },
    CatchClause: function CatchClause(node, state) {
      if (node.param != null) {
        this.go(node.param, state);
      }
      this.go(node.body, state);
    },
    WhileStatement: function WhileStatement(node, state) {
      this.go(node.test, state);
      this.go(node.body, state);
    },
    DoWhileStatement: function DoWhileStatement(node, state) {
      this.go(node.body, state);
      this.go(node.test, state);
    },
    ForStatement: function ForStatement(node, state) {
      if (node.init != null) {
        this.go(node.init, state);
      }
      if (node.test != null) {
        this.go(node.test, state);
      }
      if (node.update != null) {
        this.go(node.update, state);
      }
      this.go(node.body, state);
    },

    ForInStatement: ForInStatement = function ForInStatement(node, state) {
      this.go(node.left, state);
      this.go(node.right, state);
      this.go(node.body, state);
    },
    DebuggerStatement: ignore,
    FunctionDeclaration: FunctionDeclaration = function FunctionDeclaration(node, state) {
      if (node.id != null) {
        this.go(node.id, state);
      }
      var params = node.params;

      if (params != null) {
        for (var i = 0, length = params.length; i < length; i++) {
          this.go(params[i], state);
        }
      }
      this.go(node.body, state);
    },
    VariableDeclaration: function VariableDeclaration(node, state) {
      var declarations = node.declarations,
          length = declarations.length;

      for (var i = 0; i < length; i++) {
        this.go(declarations[i], state);
      }
    },
    VariableDeclarator: function VariableDeclarator(node, state) {
      this.go(node.id, state);
      if (node.init != null) {
        this.go(node.init, state);
      }
    },
    ArrowFunctionExpression: function ArrowFunctionExpression(node, state) {
      var params = node.params;

      if (params != null) {
        for (var i = 0, length = params.length; i < length; i++) {
          this.go(params[i], state);
        }
      }
      this.go(node.body, state);
    },

    ThisExpression: ignore,
    ArrayExpression: ArrayExpression = function ArrayExpression(node, state) {
      var elements = node.elements,
          length = elements.length;

      for (var i = 0; i < length; i++) {
        var element = elements[i];
        if (element != null) {
          this.go(elements[i], state);
        }
      }
    },
    ObjectExpression: function ObjectExpression(node, state) {
      var properties = node.properties,
          length = properties.length;

      for (var i = 0; i < length; i++) {
        this.go(properties[i], state);
      }
    },
    Property: function Property(node, state) {
      this.go(node.key, state);
      if (!node.shorthand) {
        this.go(node.value, state);
      }
    },

    FunctionExpression: FunctionDeclaration,
    SequenceExpression: function SequenceExpression(node, state) {
      var expressions = node.expressions,
          length = expressions.length;

      for (var i = 0; i < length; i++) {
        this.go(expressions[i], state);
      }
    },
    UnaryExpression: function UnaryExpression(node, state) {
      this.go(node.argument, state);
    },
    UpdateExpression: function UpdateExpression(node, state) {
      this.go(node.argument, state);
    },
    AssignmentExpression: function AssignmentExpression(node, state) {
      this.go(node.left, state);
      this.go(node.right, state);
    },

    BinaryExpression: BinaryExpression = function BinaryExpression(node, state) {
      this.go(node.left, state);
      this.go(node.right, state);
    },
    LogicalExpression: BinaryExpression,
    ConditionalExpression: function ConditionalExpression(node, state) {
      this.go(node.test, state);
      this.go(node.consequent, state);
      this.go(node.alternate, state);
    },
    NewExpression: function NewExpression(node, state) {
      this.CallExpression(node, state);
    },
    CallExpression: function CallExpression(node, state) {
      this.go(node.callee, state);
      var args = node['arguments'],
          length = args.length;

      for (var i = 0; i < length; i++) {
        this.go(args[i], state);
      }
    },
    MemberExpression: function MemberExpression(node, state) {
      this.go(node.object, state);
      this.go(node.property, state);
    },

    Identifier: ignore,
    Literal: ignore,

    // JavaScript 6
    ForOfStatement: ForInStatement,
    ClassDeclaration: function ClassDeclaration(node, state) {
      if (node.id) {
        this.go(node.id, state);
      }
      if (node.superClass) {
        this.go(node.superClass, state);
      }
      this.go(node.body, state);
    },
    ClassBody: function ClassBody(node, state) {
      var body = node.body,
          length = body.length;

      for (var i = 0; i < length; i++) {
        this.go(body[i], state);
      }
    },
    ImportDeclaration: function ImportDeclaration(node, state) {
      var specifiers = node.specifiers,
          length = specifiers.length;

      for (var i = 0; i < length; i++) {
        this.go(specifiers[i], state);
      }
      this.go(node.source, state);
    },
    ImportNamespaceSpecifier: function ImportNamespaceSpecifier(node, state) {
      this.go(node.local, state);
    },
    ImportDefaultSpecifier: function ImportDefaultSpecifier(node, state) {
      this.go(node.local, state);
    },
    ImportSpecifier: function ImportSpecifier(node, state) {
      this.go(node.imported, state);
      this.go(node.local, state);
    },
    ExportDefaultDeclaration: function ExportDefaultDeclaration(node, state) {
      this.go(node.declaration, state);
    },
    ExportNamedDeclaration: function ExportNamedDeclaration(node, state) {
      if (node.declaration) {
        this.go(node.declaration, state);
      }
      var specifiers = node.specifiers,
          length = specifiers.length;

      for (var i = 0; i < length; i++) {
        this.go(specifiers[i], state);
      }
      if (node.source) {
        this.go(node.source, state);
      }
    },
    ExportSpecifier: function ExportSpecifier(node, state) {
      this.go(node.local, state);
      this.go(node.exported, state);
    },
    ExportAllDeclaration: function ExportAllDeclaration(node, state) {
      this.go(node.source, state);
    },
    MethodDefinition: function MethodDefinition(node, state) {
      this.go(node.key, state);
      this.go(node.value, state);
    },
    ClassExpression: function ClassExpression(node, state) {
      this.ClassDeclaration(node, state);
    },

    Super: ignore,
    RestElement: RestElement = function RestElement(node, state) {
      this.go(node.argument, state);
    },
    SpreadElement: RestElement,
    YieldExpression: function YieldExpression(node, state) {
      if (node.argument) {
        this.go(node.argument, state);
      }
    },
    TaggedTemplateExpression: function TaggedTemplateExpression(node, state) {
      this.go(node.tag, state);
      this.go(node.quasi, state);
    },
    TemplateLiteral: function TemplateLiteral(node, state) {
      var quasis = node.quasis,
          expressions = node.expressions;

      for (var i = 0, length = expressions.length; i < length; i++) {
        this.go(expressions[i], state);
      }
      for (var _i = 0, _length = quasis.length; _i < _length; _i++) {
        this.go(quasis[_i], state);
      }
    },

    TemplateElement: ignore,
    ObjectPattern: function ObjectPattern(node, state) {
      var properties = node.properties,
          length = properties.length;

      for (var i = 0; i < length; i++) {
        this.go(properties[i], state);
      }
    },

    ArrayPattern: ArrayExpression,
    AssignmentPattern: function AssignmentPattern(node, state) {
      this.go(node.left, state);
      this.go(node.right, state);
    },
    MetaProperty: function MetaProperty(node, state) {
      this.go(node.meta, state);
      this.go(node.property, state);
    },


    // JavaScript 7
    AwaitExpression: function AwaitExpression(node, state) {
      this.go(node.argument, state);
    }
  };
});

},{}],40:[function(require,module,exports){
"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.generate = generate;
exports.baseGenerator = exports.GENERATOR = exports.EXPRESSIONS_PRECEDENCE = exports.NEEDS_PARENTHESES = void 0;

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var stringify = JSON.stringify;

if (!String.prototype.repeat) {
  throw new Error('String.prototype.repeat is undefined, see https://github.com/davidbonnet/astring#installation');
}

if (!String.prototype.endsWith) {
  throw new Error('String.prototype.endsWith is undefined, see https://github.com/davidbonnet/astring#installation');
}

var OPERATOR_PRECEDENCE = {
  '||': 3,
  '&&': 4,
  '|': 5,
  '??': 5,
  '^': 6,
  '&': 7,
  '==': 8,
  '!=': 8,
  '===': 8,
  '!==': 8,
  '<': 9,
  '>': 9,
  '<=': 9,
  '>=': 9,
  "in": 9,
  "instanceof": 9,
  '<<': 10,
  '>>': 10,
  '>>>': 10,
  '+': 11,
  '-': 11,
  '*': 12,
  '%': 12,
  '/': 12,
  '**': 13
};
var NEEDS_PARENTHESES = 17;
exports.NEEDS_PARENTHESES = NEEDS_PARENTHESES;
var EXPRESSIONS_PRECEDENCE = {
  ArrayExpression: 20,
  TaggedTemplateExpression: 20,
  ThisExpression: 20,
  Identifier: 20,
  PrivateIdentifier: 20,
  Literal: 18,
  TemplateLiteral: 20,
  Super: 20,
  SequenceExpression: 20,
  MemberExpression: 19,
  ChainExpression: 19,
  CallExpression: 19,
  NewExpression: 19,
  ArrowFunctionExpression: NEEDS_PARENTHESES,
  ClassExpression: NEEDS_PARENTHESES,
  FunctionExpression: NEEDS_PARENTHESES,
  ObjectExpression: NEEDS_PARENTHESES,
  UpdateExpression: 16,
  UnaryExpression: 15,
  AwaitExpression: 15,
  BinaryExpression: 14,
  LogicalExpression: 13,
  ConditionalExpression: 4,
  AssignmentExpression: 3,
  YieldExpression: 2,
  RestElement: 1
};
exports.EXPRESSIONS_PRECEDENCE = EXPRESSIONS_PRECEDENCE;

function formatSequence(state, nodes) {
  var generator = state.generator;
  state.write('(');

  if (nodes != null && nodes.length > 0) {
    generator[nodes[0].type](nodes[0], state);
    var length = nodes.length;

    for (var i = 1; i < length; i++) {
      var param = nodes[i];
      state.write(', ');
      generator[param.type](param, state);
    }
  }

  state.write(')');
}

function expressionNeedsParenthesis(state, node, parentNode, isRightHand) {
  var nodePrecedence = state.expressionsPrecedence[node.type];

  if (nodePrecedence === NEEDS_PARENTHESES) {
    return true;
  }

  var parentNodePrecedence = state.expressionsPrecedence[parentNode.type];

  if (nodePrecedence !== parentNodePrecedence) {
    return !isRightHand && nodePrecedence === 15 && parentNodePrecedence === 14 && parentNode.operator === '**' || nodePrecedence < parentNodePrecedence;
  }

  if (nodePrecedence !== 13 && nodePrecedence !== 14) {
    return false;
  }

  if (node.operator === '**' && parentNode.operator === '**') {
    return !isRightHand;
  }

  if (isRightHand) {
    return OPERATOR_PRECEDENCE[node.operator] <= OPERATOR_PRECEDENCE[parentNode.operator];
  }

  return OPERATOR_PRECEDENCE[node.operator] < OPERATOR_PRECEDENCE[parentNode.operator];
}

function formatExpression(state, node, parentNode, isRightHand) {
  var generator = state.generator;

  if (expressionNeedsParenthesis(state, node, parentNode, isRightHand)) {
    state.write('(');
    generator[node.type](node, state);
    state.write(')');
  } else {
    generator[node.type](node, state);
  }
}

function reindent(state, text, indent, lineEnd) {
  var lines = text.split('\n');
  var end = lines.length - 1;
  state.write(lines[0].trim());

  if (end > 0) {
    state.write(lineEnd);

    for (var i = 1; i < end; i++) {
      state.write(indent + lines[i].trim() + lineEnd);
    }

    state.write(indent + lines[end].trim());
  }
}

function formatComments(state, comments, indent, lineEnd) {
  var length = comments.length;

  for (var i = 0; i < length; i++) {
    var comment = comments[i];
    state.write(indent);

    if (comment.type[0] === 'L') {
      state.write('// ' + comment.value.trim() + '\n', comment);
    } else {
      state.write('/*');
      reindent(state, comment.value, indent, lineEnd);
      state.write('*/' + lineEnd);
    }
  }
}

function hasCallExpression(node) {
  var currentNode = node;

  while (currentNode != null) {
    var _currentNode = currentNode,
        type = _currentNode.type;

    if (type[0] === 'C' && type[1] === 'a') {
      return true;
    } else if (type[0] === 'M' && type[1] === 'e' && type[2] === 'm') {
      currentNode = currentNode.object;
    } else {
      return false;
    }
  }
}

function formatVariableDeclaration(state, node) {
  var generator = state.generator;
  var declarations = node.declarations;
  state.write(node.kind + ' ');
  var length = declarations.length;

  if (length > 0) {
    generator.VariableDeclarator(declarations[0], state);

    for (var i = 1; i < length; i++) {
      state.write(', ');
      generator.VariableDeclarator(declarations[i], state);
    }
  }
}

var ForInStatement, FunctionDeclaration, RestElement, BinaryExpression, ArrayExpression, BlockStatement;
var GENERATOR = {
  Program: function Program(node, state) {
    var indent = state.indent.repeat(state.indentLevel);
    var lineEnd = state.lineEnd,
        writeComments = state.writeComments;

    if (writeComments && node.comments != null) {
      formatComments(state, node.comments, indent, lineEnd);
    }

    var statements = node.body;
    var length = statements.length;

    for (var i = 0; i < length; i++) {
      var statement = statements[i];

      if (writeComments && statement.comments != null) {
        formatComments(state, statement.comments, indent, lineEnd);
      }

      state.write(indent);
      this[statement.type](statement, state);
      state.write(lineEnd);
    }

    if (writeComments && node.trailingComments != null) {
      formatComments(state, node.trailingComments, indent, lineEnd);
    }
  },
  BlockStatement: BlockStatement = function BlockStatement(node, state) {
    var indent = state.indent.repeat(state.indentLevel++);
    var lineEnd = state.lineEnd,
        writeComments = state.writeComments;
    var statementIndent = indent + state.indent;
    state.write('{');
    var statements = node.body;

    if (statements != null && statements.length > 0) {
      state.write(lineEnd);

      if (writeComments && node.comments != null) {
        formatComments(state, node.comments, statementIndent, lineEnd);
      }

      var length = statements.length;

      for (var i = 0; i < length; i++) {
        var statement = statements[i];

        if (writeComments && statement.comments != null) {
          formatComments(state, statement.comments, statementIndent, lineEnd);
        }

        state.write(statementIndent);
        this[statement.type](statement, state);
        state.write(lineEnd);
      }

      state.write(indent);
    } else {
      if (writeComments && node.comments != null) {
        state.write(lineEnd);
        formatComments(state, node.comments, statementIndent, lineEnd);
        state.write(indent);
      }
    }

    if (writeComments && node.trailingComments != null) {
      formatComments(state, node.trailingComments, statementIndent, lineEnd);
    }

    state.write('}');
    state.indentLevel--;
  },
  ClassBody: BlockStatement,
  StaticBlock: function StaticBlock(node, state) {
    state.write('static ');
    this.BlockStatement(node, state);
  },
  EmptyStatement: function EmptyStatement(node, state) {
    state.write(';');
  },
  ExpressionStatement: function ExpressionStatement(node, state) {
    var precedence = state.expressionsPrecedence[node.expression.type];

    if (precedence === NEEDS_PARENTHESES || precedence === 3 && node.expression.left.type[0] === 'O') {
      state.write('(');
      this[node.expression.type](node.expression, state);
      state.write(')');
    } else {
      this[node.expression.type](node.expression, state);
    }

    state.write(';');
  },
  IfStatement: function IfStatement(node, state) {
    state.write('if (');
    this[node.test.type](node.test, state);
    state.write(') ');
    this[node.consequent.type](node.consequent, state);

    if (node.alternate != null) {
      state.write(' else ');
      this[node.alternate.type](node.alternate, state);
    }
  },
  LabeledStatement: function LabeledStatement(node, state) {
    this[node.label.type](node.label, state);
    state.write(': ');
    this[node.body.type](node.body, state);
  },
  BreakStatement: function BreakStatement(node, state) {
    state.write('break');

    if (node.label != null) {
      state.write(' ');
      this[node.label.type](node.label, state);
    }

    state.write(';');
  },
  ContinueStatement: function ContinueStatement(node, state) {
    state.write('continue');

    if (node.label != null) {
      state.write(' ');
      this[node.label.type](node.label, state);
    }

    state.write(';');
  },
  WithStatement: function WithStatement(node, state) {
    state.write('with (');
    this[node.object.type](node.object, state);
    state.write(') ');
    this[node.body.type](node.body, state);
  },
  SwitchStatement: function SwitchStatement(node, state) {
    var indent = state.indent.repeat(state.indentLevel++);
    var lineEnd = state.lineEnd,
        writeComments = state.writeComments;
    state.indentLevel++;
    var caseIndent = indent + state.indent;
    var statementIndent = caseIndent + state.indent;
    state.write('switch (');
    this[node.discriminant.type](node.discriminant, state);
    state.write(') {' + lineEnd);
    var occurences = node.cases;
    var occurencesCount = occurences.length;

    for (var i = 0; i < occurencesCount; i++) {
      var occurence = occurences[i];

      if (writeComments && occurence.comments != null) {
        formatComments(state, occurence.comments, caseIndent, lineEnd);
      }

      if (occurence.test) {
        state.write(caseIndent + 'case ');
        this[occurence.test.type](occurence.test, state);
        state.write(':' + lineEnd);
      } else {
        state.write(caseIndent + 'default:' + lineEnd);
      }

      var consequent = occurence.consequent;
      var consequentCount = consequent.length;

      for (var _i = 0; _i < consequentCount; _i++) {
        var statement = consequent[_i];

        if (writeComments && statement.comments != null) {
          formatComments(state, statement.comments, statementIndent, lineEnd);
        }

        state.write(statementIndent);
        this[statement.type](statement, state);
        state.write(lineEnd);
      }
    }

    state.indentLevel -= 2;
    state.write(indent + '}');
  },
  ReturnStatement: function ReturnStatement(node, state) {
    state.write('return');

    if (node.argument) {
      state.write(' ');
      this[node.argument.type](node.argument, state);
    }

    state.write(';');
  },
  ThrowStatement: function ThrowStatement(node, state) {
    state.write('throw ');
    this[node.argument.type](node.argument, state);
    state.write(';');
  },
  TryStatement: function TryStatement(node, state) {
    state.write('try ');
    this[node.block.type](node.block, state);

    if (node.handler) {
      var handler = node.handler;

      if (handler.param == null) {
        state.write(' catch ');
      } else {
        state.write(' catch (');
        this[handler.param.type](handler.param, state);
        state.write(') ');
      }

      this[handler.body.type](handler.body, state);
    }

    if (node.finalizer) {
      state.write(' finally ');
      this[node.finalizer.type](node.finalizer, state);
    }
  },
  WhileStatement: function WhileStatement(node, state) {
    state.write('while (');
    this[node.test.type](node.test, state);
    state.write(') ');
    this[node.body.type](node.body, state);
  },
  DoWhileStatement: function DoWhileStatement(node, state) {
    state.write('do ');
    this[node.body.type](node.body, state);
    state.write(' while (');
    this[node.test.type](node.test, state);
    state.write(');');
  },
  ForStatement: function ForStatement(node, state) {
    state.write('for (');

    if (node.init != null) {
      var init = node.init;

      if (init.type[0] === 'V') {
        formatVariableDeclaration(state, init);
      } else {
        this[init.type](init, state);
      }
    }

    state.write('; ');

    if (node.test) {
      this[node.test.type](node.test, state);
    }

    state.write('; ');

    if (node.update) {
      this[node.update.type](node.update, state);
    }

    state.write(') ');
    this[node.body.type](node.body, state);
  },
  ForInStatement: ForInStatement = function ForInStatement(node, state) {
    state.write("for ".concat(node["await"] ? 'await ' : '', "("));
    var left = node.left;

    if (left.type[0] === 'V') {
      formatVariableDeclaration(state, left);
    } else {
      this[left.type](left, state);
    }

    state.write(node.type[3] === 'I' ? ' in ' : ' of ');
    this[node.right.type](node.right, state);
    state.write(') ');
    this[node.body.type](node.body, state);
  },
  ForOfStatement: ForInStatement,
  DebuggerStatement: function DebuggerStatement(node, state) {
    state.write('debugger;', node);
  },
  FunctionDeclaration: FunctionDeclaration = function FunctionDeclaration(node, state) {
    state.write((node.async ? 'async ' : '') + (node.generator ? 'function* ' : 'function ') + (node.id ? node.id.name : ''), node);
    formatSequence(state, node.params);
    state.write(' ');
    this[node.body.type](node.body, state);
  },
  FunctionExpression: FunctionDeclaration,
  VariableDeclaration: function VariableDeclaration(node, state) {
    formatVariableDeclaration(state, node);
    state.write(';');
  },
  VariableDeclarator: function VariableDeclarator(node, state) {
    this[node.id.type](node.id, state);

    if (node.init != null) {
      state.write(' = ');
      this[node.init.type](node.init, state);
    }
  },
  ClassDeclaration: function ClassDeclaration(node, state) {
    state.write('class ' + (node.id ? "".concat(node.id.name, " ") : ''), node);

    if (node.superClass) {
      state.write('extends ');
      var superClass = node.superClass;
      var type = superClass.type;
      var precedence = state.expressionsPrecedence[type];

      if ((type[0] !== 'C' || type[1] !== 'l' || type[5] !== 'E') && (precedence === NEEDS_PARENTHESES || precedence < state.expressionsPrecedence.ClassExpression)) {
        state.write('(');
        this[node.superClass.type](superClass, state);
        state.write(')');
      } else {
        this[superClass.type](superClass, state);
      }

      state.write(' ');
    }

    this.ClassBody(node.body, state);
  },
  ImportDeclaration: function ImportDeclaration(node, state) {
    state.write('import ');
    var specifiers = node.specifiers;
    var length = specifiers.length;
    var i = 0;

    if (length > 0) {
      for (; i < length;) {
        if (i > 0) {
          state.write(', ');
        }

        var specifier = specifiers[i];
        var type = specifier.type[6];

        if (type === 'D') {
          state.write(specifier.local.name, specifier);
          i++;
        } else if (type === 'N') {
          state.write('* as ' + specifier.local.name, specifier);
          i++;
        } else {
          break;
        }
      }

      if (i < length) {
        state.write('{');

        for (;;) {
          var _specifier = specifiers[i];
          var name = _specifier.imported.name;
          state.write(name, _specifier);

          if (name !== _specifier.local.name) {
            state.write(' as ' + _specifier.local.name);
          }

          if (++i < length) {
            state.write(', ');
          } else {
            break;
          }
        }

        state.write('}');
      }

      state.write(' from ');
    }

    this.Literal(node.source, state);
    state.write(';');
  },
  ImportExpression: function ImportExpression(node, state) {
    state.write('import(');
    this[node.source.type](node.source, state);
    state.write(')');
  },
  ExportDefaultDeclaration: function ExportDefaultDeclaration(node, state) {
    state.write('export default ');
    this[node.declaration.type](node.declaration, state);

    if (state.expressionsPrecedence[node.declaration.type] != null && node.declaration.type[0] !== 'F') {
      state.write(';');
    }
  },
  ExportNamedDeclaration: function ExportNamedDeclaration(node, state) {
    state.write('export ');

    if (node.declaration) {
      this[node.declaration.type](node.declaration, state);
    } else {
      state.write('{');
      var specifiers = node.specifiers,
          length = specifiers.length;

      if (length > 0) {
        for (var i = 0;;) {
          var specifier = specifiers[i];
          var name = specifier.local.name;
          state.write(name, specifier);

          if (name !== specifier.exported.name) {
            state.write(' as ' + specifier.exported.name);
          }

          if (++i < length) {
            state.write(', ');
          } else {
            break;
          }
        }
      }

      state.write('}');

      if (node.source) {
        state.write(' from ');
        this.Literal(node.source, state);
      }

      state.write(';');
    }
  },
  ExportAllDeclaration: function ExportAllDeclaration(node, state) {
    if (node.exported != null) {
      state.write('export * as ' + node.exported.name + ' from ');
    } else {
      state.write('export * from ');
    }

    this.Literal(node.source, state);
    state.write(';');
  },
  MethodDefinition: function MethodDefinition(node, state) {
    if (node["static"]) {
      state.write('static ');
    }

    var kind = node.kind[0];

    if (kind === 'g' || kind === 's') {
      state.write(node.kind + ' ');
    }

    if (node.value.async) {
      state.write('async ');
    }

    if (node.value.generator) {
      state.write('*');
    }

    if (node.computed) {
      state.write('[');
      this[node.key.type](node.key, state);
      state.write(']');
    } else {
      this[node.key.type](node.key, state);
    }

    formatSequence(state, node.value.params);
    state.write(' ');
    this[node.value.body.type](node.value.body, state);
  },
  ClassExpression: function ClassExpression(node, state) {
    this.ClassDeclaration(node, state);
  },
  ArrowFunctionExpression: function ArrowFunctionExpression(node, state) {
    state.write(node.async ? 'async ' : '', node);
    var params = node.params;

    if (params != null) {
      if (params.length === 1 && params[0].type[0] === 'I') {
        state.write(params[0].name, params[0]);
      } else {
        formatSequence(state, node.params);
      }
    }

    state.write(' => ');

    if (node.body.type[0] === 'O') {
      state.write('(');
      this.ObjectExpression(node.body, state);
      state.write(')');
    } else {
      this[node.body.type](node.body, state);
    }
  },
  ThisExpression: function ThisExpression(node, state) {
    state.write('this', node);
  },
  Super: function Super(node, state) {
    state.write('super', node);
  },
  RestElement: RestElement = function RestElement(node, state) {
    state.write('...');
    this[node.argument.type](node.argument, state);
  },
  SpreadElement: RestElement,
  YieldExpression: function YieldExpression(node, state) {
    state.write(node.delegate ? 'yield*' : 'yield');

    if (node.argument) {
      state.write(' ');
      this[node.argument.type](node.argument, state);
    }
  },
  AwaitExpression: function AwaitExpression(node, state) {
    state.write('await ', node);
    formatExpression(state, node.argument, node);
  },
  TemplateLiteral: function TemplateLiteral(node, state) {
    var quasis = node.quasis,
        expressions = node.expressions;
    state.write('`');
    var length = expressions.length;

    for (var i = 0; i < length; i++) {
      var expression = expressions[i];
      var _quasi = quasis[i];
      state.write(_quasi.value.raw, _quasi);
      state.write('${');
      this[expression.type](expression, state);
      state.write('}');
    }

    var quasi = quasis[quasis.length - 1];
    state.write(quasi.value.raw, quasi);
    state.write('`');
  },
  TemplateElement: function TemplateElement(node, state) {
    state.write(node.value.raw, node);
  },
  TaggedTemplateExpression: function TaggedTemplateExpression(node, state) {
    formatExpression(state, node.tag, node);
    this[node.quasi.type](node.quasi, state);
  },
  ArrayExpression: ArrayExpression = function ArrayExpression(node, state) {
    state.write('[');

    if (node.elements.length > 0) {
      var elements = node.elements,
          length = elements.length;

      for (var i = 0;;) {
        var element = elements[i];

        if (element != null) {
          this[element.type](element, state);
        }

        if (++i < length) {
          state.write(', ');
        } else {
          if (element == null) {
            state.write(', ');
          }

          break;
        }
      }
    }

    state.write(']');
  },
  ArrayPattern: ArrayExpression,
  ObjectExpression: function ObjectExpression(node, state) {
    var indent = state.indent.repeat(state.indentLevel++);
    var lineEnd = state.lineEnd,
        writeComments = state.writeComments;
    var propertyIndent = indent + state.indent;
    state.write('{');

    if (node.properties.length > 0) {
      state.write(lineEnd);

      if (writeComments && node.comments != null) {
        formatComments(state, node.comments, propertyIndent, lineEnd);
      }

      var comma = ',' + lineEnd;
      var properties = node.properties,
          length = properties.length;

      for (var i = 0;;) {
        var property = properties[i];

        if (writeComments && property.comments != null) {
          formatComments(state, property.comments, propertyIndent, lineEnd);
        }

        state.write(propertyIndent);
        this[property.type](property, state);

        if (++i < length) {
          state.write(comma);
        } else {
          break;
        }
      }

      state.write(lineEnd);

      if (writeComments && node.trailingComments != null) {
        formatComments(state, node.trailingComments, propertyIndent, lineEnd);
      }

      state.write(indent + '}');
    } else if (writeComments) {
      if (node.comments != null) {
        state.write(lineEnd);
        formatComments(state, node.comments, propertyIndent, lineEnd);

        if (node.trailingComments != null) {
          formatComments(state, node.trailingComments, propertyIndent, lineEnd);
        }

        state.write(indent + '}');
      } else if (node.trailingComments != null) {
        state.write(lineEnd);
        formatComments(state, node.trailingComments, propertyIndent, lineEnd);
        state.write(indent + '}');
      } else {
        state.write('}');
      }
    } else {
      state.write('}');
    }

    state.indentLevel--;
  },
  Property: function Property(node, state) {
    if (node.method || node.kind[0] !== 'i') {
      this.MethodDefinition(node, state);
    } else {
      if (!node.shorthand) {
        if (node.computed) {
          state.write('[');
          this[node.key.type](node.key, state);
          state.write(']');
        } else {
          this[node.key.type](node.key, state);
        }

        state.write(': ');
      }

      this[node.value.type](node.value, state);
    }
  },
  PropertyDefinition: function PropertyDefinition(node, state) {
    if (node["static"]) {
      state.write('static ');
    }

    this[node.key.type](node.key, state);
    state.write(' = ');
    this[node.value.type](node.value, state);
  },
  ObjectPattern: function ObjectPattern(node, state) {
    state.write('{');

    if (node.properties.length > 0) {
      var properties = node.properties,
          length = properties.length;

      for (var i = 0;;) {
        this[properties[i].type](properties[i], state);

        if (++i < length) {
          state.write(', ');
        } else {
          break;
        }
      }
    }

    state.write('}');
  },
  SequenceExpression: function SequenceExpression(node, state) {
    formatSequence(state, node.expressions);
  },
  UnaryExpression: function UnaryExpression(node, state) {
    if (node.prefix) {
      var operator = node.operator,
          argument = node.argument,
          type = node.argument.type;
      state.write(operator);
      var needsParentheses = expressionNeedsParenthesis(state, argument, node);

      if (!needsParentheses && (operator.length > 1 || type[0] === 'U' && (type[1] === 'n' || type[1] === 'p') && argument.prefix && argument.operator[0] === operator && (operator === '+' || operator === '-'))) {
        state.write(' ');
      }

      if (needsParentheses) {
        state.write(operator.length > 1 ? ' (' : '(');
        this[type](argument, state);
        state.write(')');
      } else {
        this[type](argument, state);
      }
    } else {
      this[node.argument.type](node.argument, state);
      state.write(node.operator);
    }
  },
  UpdateExpression: function UpdateExpression(node, state) {
    if (node.prefix) {
      state.write(node.operator);
      this[node.argument.type](node.argument, state);
    } else {
      this[node.argument.type](node.argument, state);
      state.write(node.operator);
    }
  },
  AssignmentExpression: function AssignmentExpression(node, state) {
    this[node.left.type](node.left, state);
    state.write(' ' + node.operator + ' ');
    this[node.right.type](node.right, state);
  },
  AssignmentPattern: function AssignmentPattern(node, state) {
    this[node.left.type](node.left, state);
    state.write(' = ');
    this[node.right.type](node.right, state);
  },
  BinaryExpression: BinaryExpression = function BinaryExpression(node, state) {
    var isIn = node.operator === 'in';

    if (isIn) {
      state.write('(');
    }

    formatExpression(state, node.left, node, false);
    state.write(' ' + node.operator + ' ');
    formatExpression(state, node.right, node, true);

    if (isIn) {
      state.write(')');
    }
  },
  LogicalExpression: BinaryExpression,
  ConditionalExpression: function ConditionalExpression(node, state) {
    var test = node.test;
    var precedence = state.expressionsPrecedence[test.type];

    if (precedence === NEEDS_PARENTHESES || precedence <= state.expressionsPrecedence.ConditionalExpression) {
      state.write('(');
      this[test.type](test, state);
      state.write(')');
    } else {
      this[test.type](test, state);
    }

    state.write(' ? ');
    this[node.consequent.type](node.consequent, state);
    state.write(' : ');
    this[node.alternate.type](node.alternate, state);
  },
  NewExpression: function NewExpression(node, state) {
    state.write('new ');
    var precedence = state.expressionsPrecedence[node.callee.type];

    if (precedence === NEEDS_PARENTHESES || precedence < state.expressionsPrecedence.CallExpression || hasCallExpression(node.callee)) {
      state.write('(');
      this[node.callee.type](node.callee, state);
      state.write(')');
    } else {
      this[node.callee.type](node.callee, state);
    }

    formatSequence(state, node['arguments']);
  },
  CallExpression: function CallExpression(node, state) {
    var precedence = state.expressionsPrecedence[node.callee.type];

    if (precedence === NEEDS_PARENTHESES || precedence < state.expressionsPrecedence.CallExpression) {
      state.write('(');
      this[node.callee.type](node.callee, state);
      state.write(')');
    } else {
      this[node.callee.type](node.callee, state);
    }

    if (node.optional) {
      state.write('?.');
    }

    formatSequence(state, node['arguments']);
  },
  ChainExpression: function ChainExpression(node, state) {
    this[node.expression.type](node.expression, state);
  },
  MemberExpression: function MemberExpression(node, state) {
    var precedence = state.expressionsPrecedence[node.object.type];

    if (precedence === NEEDS_PARENTHESES || precedence < state.expressionsPrecedence.MemberExpression) {
      state.write('(');
      this[node.object.type](node.object, state);
      state.write(')');
    } else {
      this[node.object.type](node.object, state);
    }

    if (node.computed) {
      if (node.optional) {
        state.write('?.');
      }

      state.write('[');
      this[node.property.type](node.property, state);
      state.write(']');
    } else {
      if (node.optional) {
        state.write('?.');
      } else {
        state.write('.');
      }

      this[node.property.type](node.property, state);
    }
  },
  MetaProperty: function MetaProperty(node, state) {
    state.write(node.meta.name + '.' + node.property.name, node);
  },
  Identifier: function Identifier(node, state) {
    state.write(node.name, node);
  },
  PrivateIdentifier: function PrivateIdentifier(node, state) {
    state.write("#".concat(node.name), node);
  },
  Literal: function Literal(node, state) {
    if (node.raw != null) {
      state.write(node.raw, node);
    } else if (node.regex != null) {
      this.RegExpLiteral(node, state);
    } else if (node.bigint != null) {
      state.write(node.bigint + 'n', node);
    } else {
      state.write(stringify(node.value), node);
    }
  },
  RegExpLiteral: function RegExpLiteral(node, state) {
    var regex = node.regex;
    state.write("/".concat(regex.pattern, "/").concat(regex.flags), node);
  }
};
exports.GENERATOR = GENERATOR;
var EMPTY_OBJECT = {};
var baseGenerator = GENERATOR;
exports.baseGenerator = baseGenerator;

var State = function () {
  function State(options) {
    _classCallCheck(this, State);

    var setup = options == null ? EMPTY_OBJECT : options;
    this.output = '';

    if (setup.output != null) {
      this.output = setup.output;
      this.write = this.writeToStream;
    } else {
      this.output = '';
    }

    this.generator = setup.generator != null ? setup.generator : GENERATOR;
    this.expressionsPrecedence = setup.expressionsPrecedence != null ? setup.expressionsPrecedence : EXPRESSIONS_PRECEDENCE;
    this.indent = setup.indent != null ? setup.indent : '  ';
    this.lineEnd = setup.lineEnd != null ? setup.lineEnd : '\n';
    this.indentLevel = setup.startingIndentLevel != null ? setup.startingIndentLevel : 0;
    this.writeComments = setup.comments ? setup.comments : false;

    if (setup.sourceMap != null) {
      this.write = setup.output == null ? this.writeAndMap : this.writeToStreamAndMap;
      this.sourceMap = setup.sourceMap;
      this.line = 1;
      this.column = 0;
      this.lineEndSize = this.lineEnd.split('\n').length - 1;
      this.mapping = {
        original: null,
        generated: this,
        name: undefined,
        source: setup.sourceMap.file || setup.sourceMap._file
      };
    }
  }

  _createClass(State, [{
    key: "write",
    value: function write(code) {
      this.output += code;
    }
  }, {
    key: "writeToStream",
    value: function writeToStream(code) {
      this.output.write(code);
    }
  }, {
    key: "writeAndMap",
    value: function writeAndMap(code, node) {
      this.output += code;
      this.map(code, node);
    }
  }, {
    key: "writeToStreamAndMap",
    value: function writeToStreamAndMap(code, node) {
      this.output.write(code);
      this.map(code, node);
    }
  }, {
    key: "map",
    value: function map(code, node) {
      if (node != null) {
        var type = node.type;

        if (type[0] === 'L' && type[2] === 'n') {
          this.column = 0;
          this.line++;
          return;
        }

        if (node.loc != null) {
          var mapping = this.mapping;
          mapping.original = node.loc.start;
          mapping.name = node.name;
          this.sourceMap.addMapping(mapping);
        }

        if (type[0] === 'T' && type[8] === 'E' || type[0] === 'L' && type[1] === 'i' && typeof node.value === 'string') {
          var _length = code.length;
          var column = this.column,
              line = this.line;

          for (var i = 0; i < _length; i++) {
            if (code[i] === '\n') {
              column = 0;
              line++;
            } else {
              column++;
            }
          }

          this.column = column;
          this.line = line;
          return;
        }
      }

      var length = code.length;
      var lineEnd = this.lineEnd;

      if (length > 0) {
        if (this.lineEndSize > 0 && (lineEnd.length === 1 ? code[length - 1] === lineEnd : code.endsWith(lineEnd))) {
          this.line += this.lineEndSize;
          this.column = 0;
        } else {
          this.column += length;
        }
      }
    }
  }, {
    key: "toString",
    value: function toString() {
      return this.output;
    }
  }]);

  return State;
}();

function generate(node, options) {
  var state = new State(options);
  state.generator[node.type](node, state);
  return state.output;
}


},{}],41:[function(require,module,exports){

/**
 * Expose `Backoff`.
 */

module.exports = Backoff;

/**
 * Initialize backoff timer with `opts`.
 *
 * - `min` initial timeout in milliseconds [100]
 * - `max` max timeout [10000]
 * - `jitter` [0]
 * - `factor` [2]
 *
 * @param {Object} opts
 * @api public
 */

function Backoff(opts) {
  opts = opts || {};
  this.ms = opts.min || 100;
  this.max = opts.max || 10000;
  this.factor = opts.factor || 2;
  this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;
  this.attempts = 0;
}

/**
 * Return the backoff duration.
 *
 * @return {Number}
 * @api public
 */

Backoff.prototype.duration = function(){
  var ms = this.ms * Math.pow(this.factor, this.attempts++);
  if (this.jitter) {
    var rand =  Math.random();
    var deviation = Math.floor(rand * this.jitter * ms);
    ms = (Math.floor(rand * 10) & 1) == 0  ? ms - deviation : ms + deviation;
  }
  return Math.min(ms, this.max) | 0;
};

/**
 * Reset the number of attempts.
 *
 * @api public
 */

Backoff.prototype.reset = function(){
  this.attempts = 0;
};

/**
 * Set the minimum duration
 *
 * @api public
 */

Backoff.prototype.setMin = function(min){
  this.ms = min;
};

/**
 * Set the maximum duration
 *
 * @api public
 */

Backoff.prototype.setMax = function(max){
  this.max = max;
};

/**
 * Set the jitter
 *
 * @api public
 */

Backoff.prototype.setJitter = function(jitter){
  this.jitter = jitter;
};


},{}],42:[function(require,module,exports){
'use strict'

exports.byteLength = byteLength
exports.toByteArray = toByteArray
exports.fromByteArray = fromByteArray

var lookup = []
var revLookup = []
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array

var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
for (var i = 0, len = code.length; i < len; ++i) {
  lookup[i] = code[i]
  revLookup[code.charCodeAt(i)] = i
}

// Support decoding URL-safe base64 strings, as Node.js does.
// See: https://en.wikipedia.org/wiki/Base64#URL_applications
revLookup['-'.charCodeAt(0)] = 62
revLookup['_'.charCodeAt(0)] = 63

function getLens (b64) {
  var len = b64.length

  if (len % 4 > 0) {
    throw new Error('Invalid string. Length must be a multiple of 4')
  }

  // Trim off extra bytes after placeholder bytes are found
  // See: https://github.com/beatgammit/base64-js/issues/42
  var validLen = b64.indexOf('=')
  if (validLen === -1) validLen = len

  var placeHoldersLen = validLen === len
    ? 0
    : 4 - (validLen % 4)

  return [validLen, placeHoldersLen]
}

// base64 is 4/3 + up to two characters of the original data
function byteLength (b64) {
  var lens = getLens(b64)
  var validLen = lens[0]
  var placeHoldersLen = lens[1]
  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}

function _byteLength (b64, validLen, placeHoldersLen) {
  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}

function toByteArray (b64) {
  var tmp
  var lens = getLens(b64)
  var validLen = lens[0]
  var placeHoldersLen = lens[1]

  var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))

  var curByte = 0

  // if there are placeholders, only get up to the last complete 4 chars
  var len = placeHoldersLen > 0
    ? validLen - 4
    : validLen

  var i
  for (i = 0; i < len; i += 4) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 18) |
      (revLookup[b64.charCodeAt(i + 1)] << 12) |
      (revLookup[b64.charCodeAt(i + 2)] << 6) |
      revLookup[b64.charCodeAt(i + 3)]
    arr[curByte++] = (tmp >> 16) & 0xFF
    arr[curByte++] = (tmp >> 8) & 0xFF
    arr[curByte++] = tmp & 0xFF
  }

  if (placeHoldersLen === 2) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 2) |
      (revLookup[b64.charCodeAt(i + 1)] >> 4)
    arr[curByte++] = tmp & 0xFF
  }

  if (placeHoldersLen === 1) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 10) |
      (revLookup[b64.charCodeAt(i + 1)] << 4) |
      (revLookup[b64.charCodeAt(i + 2)] >> 2)
    arr[curByte++] = (tmp >> 8) & 0xFF
    arr[curByte++] = tmp & 0xFF
  }

  return arr
}

function tripletToBase64 (num) {
  return lookup[num >> 18 & 0x3F] +
    lookup[num >> 12 & 0x3F] +
    lookup[num >> 6 & 0x3F] +
    lookup[num & 0x3F]
}

function encodeChunk (uint8, start, end) {
  var tmp
  var output = []
  for (var i = start; i < end; i += 3) {
    tmp =
      ((uint8[i] << 16) & 0xFF0000) +
      ((uint8[i + 1] << 8) & 0xFF00) +
      (uint8[i + 2] & 0xFF)
    output.push(tripletToBase64(tmp))
  }
  return output.join('')
}

function fromByteArray (uint8) {
  var tmp
  var len = uint8.length
  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
  var parts = []
  var maxChunkLength = 16383 // must be multiple of 3

  // go through the array every three bytes, we'll deal with trailing stuff later
  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
  }

  // pad the end with zeros, but make sure to not forget the extra bytes
  if (extraBytes === 1) {
    tmp = uint8[len - 1]
    parts.push(
      lookup[tmp >> 2] +
      lookup[(tmp << 4) & 0x3F] +
      '=='
    )
  } else if (extraBytes === 2) {
    tmp = (uint8[len - 2] << 8) + uint8[len - 1]
    parts.push(
      lookup[tmp >> 10] +
      lookup[(tmp >> 4) & 0x3F] +
      lookup[(tmp << 2) & 0x3F] +
      '='
    )
  }

  return parts.join('')
}

},{}],43:[function(require,module,exports){

},{}],44:[function(require,module,exports){
(function (Buffer){(function (){
/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <https://feross.org>
 * @license  MIT
 */
/* eslint-disable no-proto */

'use strict'

var base64 = require('base64-js')
var ieee754 = require('ieee754')

exports.Buffer = Buffer
exports.SlowBuffer = SlowBuffer
exports.INSPECT_MAX_BYTES = 50

var K_MAX_LENGTH = 0x7fffffff
exports.kMaxLength = K_MAX_LENGTH

/**
 * If `Buffer.TYPED_ARRAY_SUPPORT`:
 *   === true    Use Uint8Array implementation (fastest)
 *   === false   Print warning and recommend using `buffer` v4.x which has an Object
 *               implementation (most compatible, even IE6)
 *
 * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
 * Opera 11.6+, iOS 4.2+.
 *
 * We report that the browser does not support typed arrays if the are not subclassable
 * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
 * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
 * for __proto__ and has a buggy typed array implementation.
 */
Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()

if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
    typeof console.error === 'function') {
  console.error(
    'This browser lacks typed array (Uint8Array) support which is required by ' +
    '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
  )
}

function typedArraySupport () {
  // Can typed array instances can be augmented?
  try {
    var arr = new Uint8Array(1)
    arr.__proto__ = { __proto__: Uint8Array.prototype, foo: function () { return 42 } }
    return arr.foo() === 42
  } catch (e) {
    return false
  }
}

Object.defineProperty(Buffer.prototype, 'parent', {
  enumerable: true,
  get: function () {
    if (!Buffer.isBuffer(this)) return undefined
    return this.buffer
  }
})

Object.defineProperty(Buffer.prototype, 'offset', {
  enumerable: true,
  get: function () {
    if (!Buffer.isBuffer(this)) return undefined
    return this.byteOffset
  }
})

function createBuffer (length) {
  if (length > K_MAX_LENGTH) {
    throw new RangeError('The value "' + length + '" is invalid for option "size"')
  }
  // Return an augmented `Uint8Array` instance
  var buf = new Uint8Array(length)
  buf.__proto__ = Buffer.prototype
  return buf
}

/**
 * The Buffer constructor returns instances of `Uint8Array` that have their
 * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
 * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
 * and the `Uint8Array` methods. Square bracket notation works as expected -- it
 * returns a single octet.
 *
 * The `Uint8Array` prototype remains unmodified.
 */

function Buffer (arg, encodingOrOffset, length) {
  // Common case.
  if (typeof arg === 'number') {
    if (typeof encodingOrOffset === 'string') {
      throw new TypeError(
        'The "string" argument must be of type string. Received type number'
      )
    }
    return allocUnsafe(arg)
  }
  return from(arg, encodingOrOffset, length)
}

// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
if (typeof Symbol !== 'undefined' && Symbol.species != null &&
    Buffer[Symbol.species] === Buffer) {
  Object.defineProperty(Buffer, Symbol.species, {
    value: null,
    configurable: true,
    enumerable: false,
    writable: false
  })
}

Buffer.poolSize = 8192 // not used by this implementation

function from (value, encodingOrOffset, length) {
  if (typeof value === 'string') {
    return fromString(value, encodingOrOffset)
  }

  if (ArrayBuffer.isView(value)) {
    return fromArrayLike(value)
  }

  if (value == null) {
    throw TypeError(
      'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
      'or Array-like Object. Received type ' + (typeof value)
    )
  }

  if (isInstance(value, ArrayBuffer) ||
      (value && isInstance(value.buffer, ArrayBuffer))) {
    return fromArrayBuffer(value, encodingOrOffset, length)
  }

  if (typeof value === 'number') {
    throw new TypeError(
      'The "value" argument must not be of type number. Received type number'
    )
  }

  var valueOf = value.valueOf && value.valueOf()
  if (valueOf != null && valueOf !== value) {
    return Buffer.from(valueOf, encodingOrOffset, length)
  }

  var b = fromObject(value)
  if (b) return b

  if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null &&
      typeof value[Symbol.toPrimitive] === 'function') {
    return Buffer.from(
      value[Symbol.toPrimitive]('string'), encodingOrOffset, length
    )
  }

  throw new TypeError(
    'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
    'or Array-like Object. Received type ' + (typeof value)
  )
}

/**
 * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
 * if value is a number.
 * Buffer.from(str[, encoding])
 * Buffer.from(array)
 * Buffer.from(buffer)
 * Buffer.from(arrayBuffer[, byteOffset[, length]])
 **/
Buffer.from = function (value, encodingOrOffset, length) {
  return from(value, encodingOrOffset, length)
}

// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
// https://github.com/feross/buffer/pull/148
Buffer.prototype.__proto__ = Uint8Array.prototype
Buffer.__proto__ = Uint8Array

function assertSize (size) {
  if (typeof size !== 'number') {
    throw new TypeError('"size" argument must be of type number')
  } else if (size < 0) {
    throw new RangeError('The value "' + size + '" is invalid for option "size"')
  }
}

function alloc (size, fill, encoding) {
  assertSize(size)
  if (size <= 0) {
    return createBuffer(size)
  }
  if (fill !== undefined) {
    // Only pay attention to encoding if it's a string. This
    // prevents accidentally sending in a number that would
    // be interpretted as a start offset.
    return typeof encoding === 'string'
      ? createBuffer(size).fill(fill, encoding)
      : createBuffer(size).fill(fill)
  }
  return createBuffer(size)
}

/**
 * Creates a new filled Buffer instance.
 * alloc(size[, fill[, encoding]])
 **/
Buffer.alloc = function (size, fill, encoding) {
  return alloc(size, fill, encoding)
}

function allocUnsafe (size) {
  assertSize(size)
  return createBuffer(size < 0 ? 0 : checked(size) | 0)
}

/**
 * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
 * */
Buffer.allocUnsafe = function (size) {
  return allocUnsafe(size)
}
/**
 * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
 */
Buffer.allocUnsafeSlow = function (size) {
  return allocUnsafe(size)
}

function fromString (string, encoding) {
  if (typeof encoding !== 'string' || encoding === '') {
    encoding = 'utf8'
  }

  if (!Buffer.isEncoding(encoding)) {
    throw new TypeError('Unknown encoding: ' + encoding)
  }

  var length = byteLength(string, encoding) | 0
  var buf = createBuffer(length)

  var actual = buf.write(string, encoding)

  if (actual !== length) {
    // Writing a hex string, for example, that contains invalid characters will
    // cause everything after the first invalid character to be ignored. (e.g.
    // 'abxxcd' will be treated as 'ab')
    buf = buf.slice(0, actual)
  }

  return buf
}

function fromArrayLike (array) {
  var length = array.length < 0 ? 0 : checked(array.length) | 0
  var buf = createBuffer(length)
  for (var i = 0; i < length; i += 1) {
    buf[i] = array[i] & 255
  }
  return buf
}

function fromArrayBuffer (array, byteOffset, length) {
  if (byteOffset < 0 || array.byteLength < byteOffset) {
    throw new RangeError('"offset" is outside of buffer bounds')
  }

  if (array.byteLength < byteOffset + (length || 0)) {
    throw new RangeError('"length" is outside of buffer bounds')
  }

  var buf
  if (byteOffset === undefined && length === undefined) {
    buf = new Uint8Array(array)
  } else if (length === undefined) {
    buf = new Uint8Array(array, byteOffset)
  } else {
    buf = new Uint8Array(array, byteOffset, length)
  }

  // Return an augmented `Uint8Array` instance
  buf.__proto__ = Buffer.prototype
  return buf
}

function fromObject (obj) {
  if (Buffer.isBuffer(obj)) {
    var len = checked(obj.length) | 0
    var buf = createBuffer(len)

    if (buf.length === 0) {
      return buf
    }

    obj.copy(buf, 0, 0, len)
    return buf
  }

  if (obj.length !== undefined) {
    if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
      return createBuffer(0)
    }
    return fromArrayLike(obj)
  }

  if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
    return fromArrayLike(obj.data)
  }
}

function checked (length) {
  // Note: cannot use `length < K_MAX_LENGTH` here because that fails when
  // length is NaN (which is otherwise coerced to zero.)
  if (length >= K_MAX_LENGTH) {
    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
                         'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
  }
  return length | 0
}

function SlowBuffer (length) {
  if (+length != length) { // eslint-disable-line eqeqeq
    length = 0
  }
  return Buffer.alloc(+length)
}

Buffer.isBuffer = function isBuffer (b) {
  return b != null && b._isBuffer === true &&
    b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false
}

Buffer.compare = function compare (a, b) {
  if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength)
  if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength)
  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
    throw new TypeError(
      'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array'
    )
  }

  if (a === b) return 0

  var x = a.length
  var y = b.length

  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
    if (a[i] !== b[i]) {
      x = a[i]
      y = b[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

Buffer.isEncoding = function isEncoding (encoding) {
  switch (String(encoding).toLowerCase()) {
    case 'hex':
    case 'utf8':
    case 'utf-8':
    case 'ascii':
    case 'latin1':
    case 'binary':
    case 'base64':
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      return true
    default:
      return false
  }
}

Buffer.concat = function concat (list, length) {
  if (!Array.isArray(list)) {
    throw new TypeError('"list" argument must be an Array of Buffers')
  }

  if (list.length === 0) {
    return Buffer.alloc(0)
  }

  var i
  if (length === undefined) {
    length = 0
    for (i = 0; i < list.length; ++i) {
      length += list[i].length
    }
  }

  var buffer = Buffer.allocUnsafe(length)
  var pos = 0
  for (i = 0; i < list.length; ++i) {
    var buf = list[i]
    if (isInstance(buf, Uint8Array)) {
      buf = Buffer.from(buf)
    }
    if (!Buffer.isBuffer(buf)) {
      throw new TypeError('"list" argument must be an Array of Buffers')
    }
    buf.copy(buffer, pos)
    pos += buf.length
  }
  return buffer
}

function byteLength (string, encoding) {
  if (Buffer.isBuffer(string)) {
    return string.length
  }
  if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) {
    return string.byteLength
  }
  if (typeof string !== 'string') {
    throw new TypeError(
      'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' +
      'Received type ' + typeof string
    )
  }

  var len = string.length
  var mustMatch = (arguments.length > 2 && arguments[2] === true)
  if (!mustMatch && len === 0) return 0

  // Use a for loop to avoid recursion
  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'ascii':
      case 'latin1':
      case 'binary':
        return len
      case 'utf8':
      case 'utf-8':
        return utf8ToBytes(string).length
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return len * 2
      case 'hex':
        return len >>> 1
      case 'base64':
        return base64ToBytes(string).length
      default:
        if (loweredCase) {
          return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8
        }
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}
Buffer.byteLength = byteLength

function slowToString (encoding, start, end) {
  var loweredCase = false

  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
  // property of a typed array.

  // This behaves neither like String nor Uint8Array in that we set start/end
  // to their upper/lower bounds if the value passed is out of range.
  // undefined is handled specially as per ECMA-262 6th Edition,
  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
  if (start === undefined || start < 0) {
    start = 0
  }
  // Return early if start > this.length. Done here to prevent potential uint32
  // coercion fail below.
  if (start > this.length) {
    return ''
  }

  if (end === undefined || end > this.length) {
    end = this.length
  }

  if (end <= 0) {
    return ''
  }

  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
  end >>>= 0
  start >>>= 0

  if (end <= start) {
    return ''
  }

  if (!encoding) encoding = 'utf8'

  while (true) {
    switch (encoding) {
      case 'hex':
        return hexSlice(this, start, end)

      case 'utf8':
      case 'utf-8':
        return utf8Slice(this, start, end)

      case 'ascii':
        return asciiSlice(this, start, end)

      case 'latin1':
      case 'binary':
        return latin1Slice(this, start, end)

      case 'base64':
        return base64Slice(this, start, end)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return utf16leSlice(this, start, end)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = (encoding + '').toLowerCase()
        loweredCase = true
    }
  }
}

// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
// reliably in a browserify context because there could be multiple different
// copies of the 'buffer' package in use. This method works even for Buffer
// instances that were created from another copy of the `buffer` package.
// See: https://github.com/feross/buffer/issues/154
Buffer.prototype._isBuffer = true

function swap (b, n, m) {
  var i = b[n]
  b[n] = b[m]
  b[m] = i
}

Buffer.prototype.swap16 = function swap16 () {
  var len = this.length
  if (len % 2 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 16-bits')
  }
  for (var i = 0; i < len; i += 2) {
    swap(this, i, i + 1)
  }
  return this
}

Buffer.prototype.swap32 = function swap32 () {
  var len = this.length
  if (len % 4 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 32-bits')
  }
  for (var i = 0; i < len; i += 4) {
    swap(this, i, i + 3)
    swap(this, i + 1, i + 2)
  }
  return this
}

Buffer.prototype.swap64 = function swap64 () {
  var len = this.length
  if (len % 8 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 64-bits')
  }
  for (var i = 0; i < len; i += 8) {
    swap(this, i, i + 7)
    swap(this, i + 1, i + 6)
    swap(this, i + 2, i + 5)
    swap(this, i + 3, i + 4)
  }
  return this
}

Buffer.prototype.toString = function toString () {
  var length = this.length
  if (length === 0) return ''
  if (arguments.length === 0) return utf8Slice(this, 0, length)
  return slowToString.apply(this, arguments)
}

Buffer.prototype.toLocaleString = Buffer.prototype.toString

Buffer.prototype.equals = function equals (b) {
  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
  if (this === b) return true
  return Buffer.compare(this, b) === 0
}

Buffer.prototype.inspect = function inspect () {
  var str = ''
  var max = exports.INSPECT_MAX_BYTES
  str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim()
  if (this.length > max) str += ' ... '
  return '<Buffer ' + str + '>'
}

Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
  if (isInstance(target, Uint8Array)) {
    target = Buffer.from(target, target.offset, target.byteLength)
  }
  if (!Buffer.isBuffer(target)) {
    throw new TypeError(
      'The "target" argument must be one of type Buffer or Uint8Array. ' +
      'Received type ' + (typeof target)
    )
  }

  if (start === undefined) {
    start = 0
  }
  if (end === undefined) {
    end = target ? target.length : 0
  }
  if (thisStart === undefined) {
    thisStart = 0
  }
  if (thisEnd === undefined) {
    thisEnd = this.length
  }

  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
    throw new RangeError('out of range index')
  }

  if (thisStart >= thisEnd && start >= end) {
    return 0
  }
  if (thisStart >= thisEnd) {
    return -1
  }
  if (start >= end) {
    return 1
  }

  start >>>= 0
  end >>>= 0
  thisStart >>>= 0
  thisEnd >>>= 0

  if (this === target) return 0

  var x = thisEnd - thisStart
  var y = end - start
  var len = Math.min(x, y)

  var thisCopy = this.slice(thisStart, thisEnd)
  var targetCopy = target.slice(start, end)

  for (var i = 0; i < len; ++i) {
    if (thisCopy[i] !== targetCopy[i]) {
      x = thisCopy[i]
      y = targetCopy[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
//
// Arguments:
// - buffer - a Buffer to search
// - val - a string, Buffer, or number
// - byteOffset - an index into `buffer`; will be clamped to an int32
// - encoding - an optional encoding, relevant is val is a string
// - dir - true for indexOf, false for lastIndexOf
function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
  // Empty buffer means no match
  if (buffer.length === 0) return -1

  // Normalize byteOffset
  if (typeof byteOffset === 'string') {
    encoding = byteOffset
    byteOffset = 0
  } else if (byteOffset > 0x7fffffff) {
    byteOffset = 0x7fffffff
  } else if (byteOffset < -0x80000000) {
    byteOffset = -0x80000000
  }
  byteOffset = +byteOffset // Coerce to Number.
  if (numberIsNaN(byteOffset)) {
    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
    byteOffset = dir ? 0 : (buffer.length - 1)
  }

  // Normalize byteOffset: negative offsets start from the end of the buffer
  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
  if (byteOffset >= buffer.length) {
    if (dir) return -1
    else byteOffset = buffer.length - 1
  } else if (byteOffset < 0) {
    if (dir) byteOffset = 0
    else return -1
  }

  // Normalize val
  if (typeof val === 'string') {
    val = Buffer.from(val, encoding)
  }

  // Finally, search either indexOf (if dir is true) or lastIndexOf
  if (Buffer.isBuffer(val)) {
    // Special case: looking for empty string/buffer always fails
    if (val.length === 0) {
      return -1
    }
    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
  } else if (typeof val === 'number') {
    val = val & 0xFF // Search for a byte value [0-255]
    if (typeof Uint8Array.prototype.indexOf === 'function') {
      if (dir) {
        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
      } else {
        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
      }
    }
    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
  }

  throw new TypeError('val must be string, number or Buffer')
}

function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
  var indexSize = 1
  var arrLength = arr.length
  var valLength = val.length

  if (encoding !== undefined) {
    encoding = String(encoding).toLowerCase()
    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
        encoding === 'utf16le' || encoding === 'utf-16le') {
      if (arr.length < 2 || val.length < 2) {
        return -1
      }
      indexSize = 2
      arrLength /= 2
      valLength /= 2
      byteOffset /= 2
    }
  }

  function read (buf, i) {
    if (indexSize === 1) {
      return buf[i]
    } else {
      return buf.readUInt16BE(i * indexSize)
    }
  }

  var i
  if (dir) {
    var foundIndex = -1
    for (i = byteOffset; i < arrLength; i++) {
      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
        if (foundIndex === -1) foundIndex = i
        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
      } else {
        if (foundIndex !== -1) i -= i - foundIndex
        foundIndex = -1
      }
    }
  } else {
    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
    for (i = byteOffset; i >= 0; i--) {
      var found = true
      for (var j = 0; j < valLength; j++) {
        if (read(arr, i + j) !== read(val, j)) {
          found = false
          break
        }
      }
      if (found) return i
    }
  }

  return -1
}

Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
  return this.indexOf(val, byteOffset, encoding) !== -1
}

Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
}

Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
}

function hexWrite (buf, string, offset, length) {
  offset = Number(offset) || 0
  var remaining = buf.length - offset
  if (!length) {
    length = remaining
  } else {
    length = Number(length)
    if (length > remaining) {
      length = remaining
    }
  }

  var strLen = string.length

  if (length > strLen / 2) {
    length = strLen / 2
  }
  for (var i = 0; i < length; ++i) {
    var parsed = parseInt(string.substr(i * 2, 2), 16)
    if (numberIsNaN(parsed)) return i
    buf[offset + i] = parsed
  }
  return i
}

function utf8Write (buf, string, offset, length) {
  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
}

function asciiWrite (buf, string, offset, length) {
  return blitBuffer(asciiToBytes(string), buf, offset, length)
}

function latin1Write (buf, string, offset, length) {
  return asciiWrite(buf, string, offset, length)
}

function base64Write (buf, string, offset, length) {
  return blitBuffer(base64ToBytes(string), buf, offset, length)
}

function ucs2Write (buf, string, offset, length) {
  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
}

Buffer.prototype.write = function write (string, offset, length, encoding) {
  // Buffer#write(string)
  if (offset === undefined) {
    encoding = 'utf8'
    length = this.length
    offset = 0
  // Buffer#write(string, encoding)
  } else if (length === undefined && typeof offset === 'string') {
    encoding = offset
    length = this.length
    offset = 0
  // Buffer#write(string, offset[, length][, encoding])
  } else if (isFinite(offset)) {
    offset = offset >>> 0
    if (isFinite(length)) {
      length = length >>> 0
      if (encoding === undefined) encoding = 'utf8'
    } else {
      encoding = length
      length = undefined
    }
  } else {
    throw new Error(
      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
    )
  }

  var remaining = this.length - offset
  if (length === undefined || length > remaining) length = remaining

  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
    throw new RangeError('Attempt to write outside buffer bounds')
  }

  if (!encoding) encoding = 'utf8'

  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'hex':
        return hexWrite(this, string, offset, length)

      case 'utf8':
      case 'utf-8':
        return utf8Write(this, string, offset, length)

      case 'ascii':
        return asciiWrite(this, string, offset, length)

      case 'latin1':
      case 'binary':
        return latin1Write(this, string, offset, length)

      case 'base64':
        // Warning: maxLength not taken into account in base64Write
        return base64Write(this, string, offset, length)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return ucs2Write(this, string, offset, length)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}

Buffer.prototype.toJSON = function toJSON () {
  return {
    type: 'Buffer',
    data: Array.prototype.slice.call(this._arr || this, 0)
  }
}

function base64Slice (buf, start, end) {
  if (start === 0 && end === buf.length) {
    return base64.fromByteArray(buf)
  } else {
    return base64.fromByteArray(buf.slice(start, end))
  }
}

function utf8Slice (buf, start, end) {
  end = Math.min(buf.length, end)
  var res = []

  var i = start
  while (i < end) {
    var firstByte = buf[i]
    var codePoint = null
    var bytesPerSequence = (firstByte > 0xEF) ? 4
      : (firstByte > 0xDF) ? 3
        : (firstByte > 0xBF) ? 2
          : 1

    if (i + bytesPerSequence <= end) {
      var secondByte, thirdByte, fourthByte, tempCodePoint

      switch (bytesPerSequence) {
        case 1:
          if (firstByte < 0x80) {
            codePoint = firstByte
          }
          break
        case 2:
          secondByte = buf[i + 1]
          if ((secondByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
            if (tempCodePoint > 0x7F) {
              codePoint = tempCodePoint
            }
          }
          break
        case 3:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
              codePoint = tempCodePoint
            }
          }
          break
        case 4:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          fourthByte = buf[i + 3]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
              codePoint = tempCodePoint
            }
          }
      }
    }

    if (codePoint === null) {
      // we did not generate a valid codePoint so insert a
      // replacement char (U+FFFD) and advance only 1 byte
      codePoint = 0xFFFD
      bytesPerSequence = 1
    } else if (codePoint > 0xFFFF) {
      // encode to utf16 (surrogate pair dance)
      codePoint -= 0x10000
      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
      codePoint = 0xDC00 | codePoint & 0x3FF
    }

    res.push(codePoint)
    i += bytesPerSequence
  }

  return decodeCodePointsArray(res)
}

// Based on http://stackoverflow.com/a/22747272/680742, the browser with
// the lowest limit is Chrome, with 0x10000 args.
// We go 1 magnitude less, for safety
var MAX_ARGUMENTS_LENGTH = 0x1000

function decodeCodePointsArray (codePoints) {
  var len = codePoints.length
  if (len <= MAX_ARGUMENTS_LENGTH) {
    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
  }

  // Decode in chunks to avoid "call stack size exceeded".
  var res = ''
  var i = 0
  while (i < len) {
    res += String.fromCharCode.apply(
      String,
      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
    )
  }
  return res
}

function asciiSlice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i] & 0x7F)
  }
  return ret
}

function latin1Slice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i])
  }
  return ret
}

function hexSlice (buf, start, end) {
  var len = buf.length

  if (!start || start < 0) start = 0
  if (!end || end < 0 || end > len) end = len

  var out = ''
  for (var i = start; i < end; ++i) {
    out += toHex(buf[i])
  }
  return out
}

function utf16leSlice (buf, start, end) {
  var bytes = buf.slice(start, end)
  var res = ''
  for (var i = 0; i < bytes.length; i += 2) {
    res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
  }
  return res
}

Buffer.prototype.slice = function slice (start, end) {
  var len = this.length
  start = ~~start
  end = end === undefined ? len : ~~end

  if (start < 0) {
    start += len
    if (start < 0) start = 0
  } else if (start > len) {
    start = len
  }

  if (end < 0) {
    end += len
    if (end < 0) end = 0
  } else if (end > len) {
    end = len
  }

  if (end < start) end = start

  var newBuf = this.subarray(start, end)
  // Return an augmented `Uint8Array` instance
  newBuf.__proto__ = Buffer.prototype
  return newBuf
}

/*
 * Need to make sure that buffer isn't trying to write out of bounds.
 */
function checkOffset (offset, ext, length) {
  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
}

Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }

  return val
}

Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    checkOffset(offset, byteLength, this.length)
  }

  var val = this[offset + --byteLength]
  var mul = 1
  while (byteLength > 0 && (mul *= 0x100)) {
    val += this[offset + --byteLength] * mul
  }

  return val
}

Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 1, this.length)
  return this[offset]
}

Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  return this[offset] | (this[offset + 1] << 8)
}

Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  return (this[offset] << 8) | this[offset + 1]
}

Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return ((this[offset]) |
      (this[offset + 1] << 8) |
      (this[offset + 2] << 16)) +
      (this[offset + 3] * 0x1000000)
}

Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] * 0x1000000) +
    ((this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    this[offset + 3])
}

Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var i = byteLength
  var mul = 1
  var val = this[offset + --i]
  while (i > 0 && (mul *= 0x100)) {
    val += this[offset + --i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 1, this.length)
  if (!(this[offset] & 0x80)) return (this[offset])
  return ((0xff - this[offset] + 1) * -1)
}

Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset] | (this[offset + 1] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset + 1] | (this[offset] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset]) |
    (this[offset + 1] << 8) |
    (this[offset + 2] << 16) |
    (this[offset + 3] << 24)
}

Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] << 24) |
    (this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    (this[offset + 3])
}

Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, true, 23, 4)
}

Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, false, 23, 4)
}

Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, true, 52, 8)
}

Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, false, 52, 8)
}

function checkInt (buf, value, offset, ext, max, min) {
  if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
  if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
  if (offset + ext > buf.length) throw new RangeError('Index out of range')
}

Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    var maxBytes = Math.pow(2, 8 * byteLength) - 1
    checkInt(this, value, offset, byteLength, maxBytes, 0)
  }

  var mul = 1
  var i = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    var maxBytes = Math.pow(2, 8 * byteLength) - 1
    checkInt(this, value, offset, byteLength, maxBytes, 0)
  }

  var i = byteLength - 1
  var mul = 1
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
  this[offset] = (value & 0xff)
  return offset + 1
}

Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  return offset + 2
}

Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  this[offset] = (value >>> 8)
  this[offset + 1] = (value & 0xff)
  return offset + 2
}

Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  this[offset + 3] = (value >>> 24)
  this[offset + 2] = (value >>> 16)
  this[offset + 1] = (value >>> 8)
  this[offset] = (value & 0xff)
  return offset + 4
}

Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  this[offset] = (value >>> 24)
  this[offset + 1] = (value >>> 16)
  this[offset + 2] = (value >>> 8)
  this[offset + 3] = (value & 0xff)
  return offset + 4
}

Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    var limit = Math.pow(2, (8 * byteLength) - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = 0
  var mul = 1
  var sub = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
      sub = 1
    }
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    var limit = Math.pow(2, (8 * byteLength) - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = byteLength - 1
  var mul = 1
  var sub = 0
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
      sub = 1
    }
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
  if (value < 0) value = 0xff + value + 1
  this[offset] = (value & 0xff)
  return offset + 1
}

Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  return offset + 2
}

Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  this[offset] = (value >>> 8)
  this[offset + 1] = (value & 0xff)
  return offset + 2
}

Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  this[offset + 2] = (value >>> 16)
  this[offset + 3] = (value >>> 24)
  return offset + 4
}

Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (value < 0) value = 0xffffffff + value + 1
  this[offset] = (value >>> 24)
  this[offset + 1] = (value >>> 16)
  this[offset + 2] = (value >>> 8)
  this[offset + 3] = (value & 0xff)
  return offset + 4
}

function checkIEEE754 (buf, value, offset, ext, max, min) {
  if (offset + ext > buf.length) throw new RangeError('Index out of range')
  if (offset < 0) throw new RangeError('Index out of range')
}

function writeFloat (buf, value, offset, littleEndian, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
  }
  ieee754.write(buf, value, offset, littleEndian, 23, 4)
  return offset + 4
}

Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
  return writeFloat(this, value, offset, true, noAssert)
}

Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
  return writeFloat(this, value, offset, false, noAssert)
}

function writeDouble (buf, value, offset, littleEndian, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
  }
  ieee754.write(buf, value, offset, littleEndian, 52, 8)
  return offset + 8
}

Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
  return writeDouble(this, value, offset, true, noAssert)
}

Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
  return writeDouble(this, value, offset, false, noAssert)
}

// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function copy (target, targetStart, start, end) {
  if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer')
  if (!start) start = 0
  if (!end && end !== 0) end = this.length
  if (targetStart >= target.length) targetStart = target.length
  if (!targetStart) targetStart = 0
  if (end > 0 && end < start) end = start

  // Copy 0 bytes; we're done
  if (end === start) return 0
  if (target.length === 0 || this.length === 0) return 0

  // Fatal error conditions
  if (targetStart < 0) {
    throw new RangeError('targetStart out of bounds')
  }
  if (start < 0 || start >= this.length) throw new RangeError('Index out of range')
  if (end < 0) throw new RangeError('sourceEnd out of bounds')

  // Are we oob?
  if (end > this.length) end = this.length
  if (target.length - targetStart < end - start) {
    end = target.length - targetStart + start
  }

  var len = end - start

  if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') {
    // Use built-in when available, missing from IE11
    this.copyWithin(targetStart, start, end)
  } else if (this === target && start < targetStart && targetStart < end) {
    // descending copy from end
    for (var i = len - 1; i >= 0; --i) {
      target[i + targetStart] = this[i + start]
    }
  } else {
    Uint8Array.prototype.set.call(
      target,
      this.subarray(start, end),
      targetStart
    )
  }

  return len
}

// Usage:
//    buffer.fill(number[, offset[, end]])
//    buffer.fill(buffer[, offset[, end]])
//    buffer.fill(string[, offset[, end]][, encoding])
Buffer.prototype.fill = function fill (val, start, end, encoding) {
  // Handle string cases:
  if (typeof val === 'string') {
    if (typeof start === 'string') {
      encoding = start
      start = 0
      end = this.length
    } else if (typeof end === 'string') {
      encoding = end
      end = this.length
    }
    if (encoding !== undefined && typeof encoding !== 'string') {
      throw new TypeError('encoding must be a string')
    }
    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
      throw new TypeError('Unknown encoding: ' + encoding)
    }
    if (val.length === 1) {
      var code = val.charCodeAt(0)
      if ((encoding === 'utf8' && code < 128) ||
          encoding === 'latin1') {
        // Fast path: If `val` fits into a single byte, use that numeric value.
        val = code
      }
    }
  } else if (typeof val === 'number') {
    val = val & 255
  }

  // Invalid ranges are not set to a default, so can range check early.
  if (start < 0 || this.length < start || this.length < end) {
    throw new RangeError('Out of range index')
  }

  if (end <= start) {
    return this
  }

  start = start >>> 0
  end = end === undefined ? this.length : end >>> 0

  if (!val) val = 0

  var i
  if (typeof val === 'number') {
    for (i = start; i < end; ++i) {
      this[i] = val
    }
  } else {
    var bytes = Buffer.isBuffer(val)
      ? val
      : Buffer.from(val, encoding)
    var len = bytes.length
    if (len === 0) {
      throw new TypeError('The value "' + val +
        '" is invalid for argument "value"')
    }
    for (i = 0; i < end - start; ++i) {
      this[i + start] = bytes[i % len]
    }
  }

  return this
}

// HELPER FUNCTIONS
// ================

var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g

function base64clean (str) {
  // Node takes equal signs as end of the Base64 encoding
  str = str.split('=')[0]
  // Node strips out invalid characters like \n and \t from the string, base64-js does not
  str = str.trim().replace(INVALID_BASE64_RE, '')
  // Node converts strings with length < 2 to ''
  if (str.length < 2) return ''
  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
  while (str.length % 4 !== 0) {
    str = str + '='
  }
  return str
}

function toHex (n) {
  if (n < 16) return '0' + n.toString(16)
  return n.toString(16)
}

function utf8ToBytes (string, units) {
  units = units || Infinity
  var codePoint
  var length = string.length
  var leadSurrogate = null
  var bytes = []

  for (var i = 0; i < length; ++i) {
    codePoint = string.charCodeAt(i)

    // is surrogate component
    if (codePoint > 0xD7FF && codePoint < 0xE000) {
      // last char was a lead
      if (!leadSurrogate) {
        // no lead yet
        if (codePoint > 0xDBFF) {
          // unexpected trail
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        } else if (i + 1 === length) {
          // unpaired lead
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        }

        // valid lead
        leadSurrogate = codePoint

        continue
      }

      // 2 leads in a row
      if (codePoint < 0xDC00) {
        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
        leadSurrogate = codePoint
        continue
      }

      // valid surrogate pair
      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
    } else if (leadSurrogate) {
      // valid bmp char, but last char was a lead
      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
    }

    leadSurrogate = null

    // encode utf8
    if (codePoint < 0x80) {
      if ((units -= 1) < 0) break
      bytes.push(codePoint)
    } else if (codePoint < 0x800) {
      if ((units -= 2) < 0) break
      bytes.push(
        codePoint >> 0x6 | 0xC0,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x10000) {
      if ((units -= 3) < 0) break
      bytes.push(
        codePoint >> 0xC | 0xE0,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x110000) {
      if ((units -= 4) < 0) break
      bytes.push(
        codePoint >> 0x12 | 0xF0,
        codePoint >> 0xC & 0x3F | 0x80,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else {
      throw new Error('Invalid code point')
    }
  }

  return bytes
}

function asciiToBytes (str) {
  var byteArray = []
  for (var i = 0; i < str.length; ++i) {
    // Node's code seems to be doing this and not & 0x7F..
    byteArray.push(str.charCodeAt(i) & 0xFF)
  }
  return byteArray
}

function utf16leToBytes (str, units) {
  var c, hi, lo
  var byteArray = []
  for (var i = 0; i < str.length; ++i) {
    if ((units -= 2) < 0) break

    c = str.charCodeAt(i)
    hi = c >> 8
    lo = c % 256
    byteArray.push(lo)
    byteArray.push(hi)
  }

  return byteArray
}

function base64ToBytes (str) {
  return base64.toByteArray(base64clean(str))
}

function blitBuffer (src, dst, offset, length) {
  for (var i = 0; i < length; ++i) {
    if ((i + offset >= dst.length) || (i >= src.length)) break
    dst[i + offset] = src[i]
  }
  return i
}

// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass
// the `instanceof` check but they should be treated as of that type.
// See: https://github.com/feross/buffer/issues/166
function isInstance (obj, type) {
  return obj instanceof type ||
    (obj != null && obj.constructor != null && obj.constructor.name != null &&
      obj.constructor.name === type.name)
}
function numberIsNaN (obj) {
  // For IE11 support
  return obj !== obj // eslint-disable-line no-self-compare
}

}).call(this)}).call(this,require("buffer").Buffer)
},{"base64-js":42,"buffer":44,"ieee754":84}],45:[function(require,module,exports){
'use strict';

var GetIntrinsic = require('get-intrinsic');

var callBind = require('./');

var $indexOf = callBind(GetIntrinsic('String.prototype.indexOf'));

module.exports = function callBoundIntrinsic(name, allowMissing) {
	var intrinsic = GetIntrinsic(name, !!allowMissing);
	if (typeof intrinsic === 'function' && $indexOf(name, '.prototype.') > -1) {
		return callBind(intrinsic);
	}
	return intrinsic;
};

},{"./":46,"get-intrinsic":79}],46:[function(require,module,exports){
'use strict';

var bind = require('function-bind');
var GetIntrinsic = require('get-intrinsic');

var $apply = GetIntrinsic('%Function.prototype.apply%');
var $call = GetIntrinsic('%Function.prototype.call%');
var $reflectApply = GetIntrinsic('%Reflect.apply%', true) || bind.call($call, $apply);

var $gOPD = GetIntrinsic('%Object.getOwnPropertyDescriptor%', true);
var $defineProperty = GetIntrinsic('%Object.defineProperty%', true);
var $max = GetIntrinsic('%Math.max%');

if ($defineProperty) {
	try {
		$defineProperty({}, 'a', { value: 1 });
	} catch (e) {
		// IE 8 has a broken defineProperty
		$defineProperty = null;
	}
}

module.exports = function callBind(originalFunction) {
	var func = $reflectApply(bind, $call, arguments);
	if ($gOPD && $defineProperty) {
		var desc = $gOPD(func, 'length');
		if (desc.configurable) {
			// original length, plus the receiver, minus any additional arguments (after the receiver)
			$defineProperty(
				func,
				'length',
				{ value: 1 + $max(0, originalFunction.length - (arguments.length - 1)) }
			);
		}
	}
	return func;
};

var applyBind = function applyBind() {
	return $reflectApply(bind, $apply, arguments);
};

if ($defineProperty) {
	$defineProperty(module.exports, 'apply', { value: applyBind });
} else {
	module.exports.apply = applyBind;
}

},{"function-bind":77,"get-intrinsic":79}],47:[function(require,module,exports){
(function(r){"object"==typeof exports&&"object"==typeof module?r(require("../../lib/codemirror")):"function"==typeof define&&define.amd?define(["../../lib/codemirror"],r):r(CodeMirror)})(function(r){function I(c){c=c.search(w);return-1==c?0:c}function J(c,d,a){return/\bstring\b/.test(c.getTokenTypeAt(l(d.line,0)))&&!/^['"`]/.test(a)}function G(c,d){var a=c.getMode();return!1!==a.useInnerComments&&a.innerMode?c.getModeAt(d):a}var E={},w=/[^\s\u00a0]/,l=r.Pos,K=r.cmpPos;r.commands.toggleComment=function(c){c.toggleComment()};
r.defineExtension("toggleComment",function(c){c||(c=E);for(var d=Infinity,a=this.listSelections(),b=null,e=a.length-1;0<=e;e--){var g=a[e].from(),f=a[e].to();g.line>=d||(f.line>=d&&(f=l(d,0)),d=g.line,null==b?this.uncomment(g,f,c)?b="un":(this.lineComment(g,f,c),b="line"):"un"==b?this.uncomment(g,f,c):this.lineComment(g,f,c))}});r.defineExtension("lineComment",function(c,d,a){a||(a=E);var b=this,e=G(b,c),g=b.getLine(c.line);if(null!=g&&!J(b,c,g)){var f=a.lineComment||e.lineComment;if(f){var m=Math.min(0!=
d.ch||d.line==c.line?d.line+1:d.line,b.lastLine()+1),u=null==a.padding?" ":a.padding,k=a.commentBlankLines||c.line==d.line;b.operation(function(){if(a.indent){for(var p=null,h=c.line;h<m;++h){var q=b.getLine(h);q=q.slice(0,I(q));if(null==p||p.length>q.length)p=q}for(h=c.line;h<m;++h){q=b.getLine(h);var t=p.length;if(k||w.test(q))q.slice(0,t)!=p&&(t=I(q)),b.replaceRange(p+f+u,l(h,0),l(h,t))}}else for(h=c.line;h<m;++h)(k||w.test(b.getLine(h)))&&b.replaceRange(f+u,l(h,0))})}else if(a.blockCommentStart||
e.blockCommentStart)a.fullLines=!0,b.blockComment(c,d,a)}});r.defineExtension("blockComment",function(c,d,a){a||(a=E);var b=this,e=G(b,c),g=a.blockCommentStart||e.blockCommentStart,f=a.blockCommentEnd||e.blockCommentEnd;if(!g||!f)(a.lineComment||e.lineComment)&&0!=a.fullLines&&b.lineComment(c,d,a);else if(!/\bcomment\b/.test(b.getTokenTypeAt(l(c.line,0)))){var m=Math.min(d.line,b.lastLine());m!=c.line&&0==d.ch&&w.test(b.getLine(m))&&--m;var u=null==a.padding?" ":a.padding;c.line>m||b.operation(function(){if(0!=
a.fullLines){var k=w.test(b.getLine(m));b.replaceRange(u+f,l(m));b.replaceRange(g+u,l(c.line,0));var p=a.blockCommentLead||e.blockCommentLead;if(null!=p)for(var h=c.line+1;h<=m;++h)(h!=m||k)&&b.replaceRange(p+u,l(h,0))}else k=0==K(b.getCursor("to"),d),p=!b.somethingSelected(),b.replaceRange(f,d),k&&b.setSelection(p?d:b.getCursor("from"),d),b.replaceRange(g,c)})}});r.defineExtension("uncomment",function(c,d,a){a||(a=E);var b=this,e=G(b,c),g=Math.min(0!=d.ch||d.line==c.line?d.line:d.line-1,b.lastLine()),
f=Math.min(c.line,g),m=a.lineComment||e.lineComment,u=[],k=null==a.padding?" ":a.padding,p;a:if(m){for(var h=f;h<=g;++h){var q=b.getLine(h),t=q.indexOf(m);-1<t&&!/comment/.test(b.getTokenTypeAt(l(h,t+1)))&&(t=-1);if(-1==t&&w.test(q))break a;if(-1<t&&w.test(q.slice(0,t)))break a;u.push(q)}b.operation(function(){for(var n=f;n<=g;++n){var A=u[n-f],x=A.indexOf(m),v=x+m.length;0>x||(A.slice(v,v+k.length)==k&&(v+=k.length),p=!0,b.replaceRange("",l(n,x),l(n,v)))}});if(p)return!0}var y=a.blockCommentStart||
e.blockCommentStart,z=a.blockCommentEnd||e.blockCommentEnd;if(!y||!z)return!1;var H=a.blockCommentLead||e.blockCommentLead,C=b.getLine(f),D=C.indexOf(y);if(-1==D)return!1;var F=g==f?C:b.getLine(g),B=F.indexOf(z,g==f?D+y.length:0);a=l(f,D+1);e=l(g,B+1);if(-1==B||!/comment/.test(b.getTokenTypeAt(a))||!/comment/.test(b.getTokenTypeAt(e))||-1<b.getRange(a,e,"\n").indexOf(z))return!1;e=C.lastIndexOf(y,c.ch);a=-1==e?-1:C.slice(0,c.ch).indexOf(z,e+y.length);if(-1!=e&&-1!=a&&a+z.length!=c.ch)return!1;a=F.indexOf(z,
d.ch);c=F.slice(d.ch).lastIndexOf(y,a-d.ch);e=-1==a||-1==c?-1:d.ch+c;if(-1!=a&&-1!=e&&e!=d.ch)return!1;b.operation(function(){b.replaceRange("",l(g,B-(k&&F.slice(B-k.length,B)==k?k.length:0)),l(g,B+z.length));var n=D+y.length;k&&C.slice(n,n+k.length)==k&&(n+=k.length);b.replaceRange("",l(f,D),l(f,n));if(H)for(n=f+1;n<=g;++n){var A=b.getLine(n),x=A.indexOf(H);if(-1!=x&&!w.test(A.slice(0,x))){var v=x+H.length;k&&A.slice(v,v+k.length)==k&&(v+=k.length);b.replaceRange("",l(n,x),l(n,v))}}});return!0})});

},{"../../lib/codemirror":51}],48:[function(require,module,exports){
(function(m){"object"==typeof exports&&"object"==typeof module?m(require("../../lib/codemirror")):"function"==typeof define&&define.amd?define(["../../lib/codemirror"],m):m(CodeMirror)})(function(m){function q(a,b){for(var l=0,e=a.length;l<e;++l)b(a[l])}function t(a,b,l,e){var c=a.getCursor(),d=l(a,c);if(!/\b(?:string|comment)\b/.test(d.type)){var g=m.innerMode(a.getMode(),d.state);if("json"!==g.mode.helperType){d.state=g.state;/^[\w$_]*$/.test(d.string)?d.end>c.ch&&(d.end=c.ch,d.string=d.string.slice(0,
c.ch-d.start)):d={start:c.ch,end:c.ch,string:"",state:d.state,type:"."==d.string?"property":null};for(g=d;"property"==g.type;){g=l(a,r(c.line,g.start));if("."!=g.string)return;g=l(a,r(c.line,g.start));if(!p)var p=[];p.push(g)}return{list:u(d,p,b,e),from:r(c.line,d.start),to:r(c.line,d.end)}}}}function v(a,b){a=a.getTokenAt(b);b.ch==a.start+1&&"."==a.string.charAt(0)?(a.end=a.start,a.string=".",a.type="property"):/^\.[\w$_]*$/.test(a.string)&&(a.type="property",a.start++,a.string=a.string.replace(/\./,
""));return a}function u(a,b,l,e){function c(h){var k;if(k=0==h.lastIndexOf(p,0)){a:if(Array.prototype.indexOf)k=-1!=g.indexOf(h);else{for(k=g.length;k--;)if(g[k]===h){k=!0;break a}k=!1}k=!k}k&&g.push(h)}function d(h){"string"==typeof h?q(w,c):h instanceof Array?q(x,c):h instanceof Function&&q(y,c);if(Object.getOwnPropertyNames&&Object.getPrototypeOf)for(;h;h=Object.getPrototypeOf(h))Object.getOwnPropertyNames(h).forEach(c);else for(var k in h)c(k)}var g=[],p=a.string,n=e&&e.globalScope||window;if(b&&
b.length){a=b.pop();var f;a.type&&0===a.type.indexOf("variable")?(e&&e.additionalContext&&(f=e.additionalContext[a.string]),e&&!1===e.useGlobalScope||(f=f||n[a.string])):"string"==a.type?f="":"atom"==a.type?f=1:"function"==a.type&&(null==n.jQuery||"$"!=a.string&&"jQuery"!=a.string||"function"!=typeof n.jQuery?null!=n._&&"_"==a.string&&"function"==typeof n._&&(f=n._()):f=n.jQuery());for(;null!=f&&b.length;)f=f[b.pop().string];null!=f&&d(f)}else{for(b=a.state.localVars;b;b=b.next)c(b.name);for(f=a.state.context;f;f=
f.prev)for(b=f.vars;b;b=b.next)c(b.name);for(b=a.state.globalVars;b;b=b.next)c(b.name);if(e&&null!=e.additionalContext)for(var z in e.additionalContext)c(z);e&&!1===e.useGlobalScope||d(n);q(l,c)}return g}var r=m.Pos;m.registerHelper("hint","javascript",function(a,b){return t(a,A,function(l,e){return l.getTokenAt(e)},b)});m.registerHelper("hint","coffeescript",function(a,b){return t(a,B,v,b)});var w="charAt charCodeAt indexOf lastIndexOf substring substr slice trim trimLeft trimRight toUpperCase toLowerCase split concat match replace search".split(" "),
x="length concat join splice push pop shift unshift slice reverse sort indexOf lastIndexOf every some filter forEach map reduce reduceRight ".split(" "),y=["prototype","apply","call","bind"],A="break case catch class const continue debugger default delete do else export extends false finally for function if in import instanceof new null return super switch this throw true try typeof var void while with yield".split(" "),B="and break catch class continue delete do else extends false finally for if in instanceof isnt new no not null of off on or return switch then throw true try typeof until void while with yes".split(" ")});

},{"../../lib/codemirror":51}],49:[function(require,module,exports){
(function(h){"object"==typeof exports&&"object"==typeof module?h(require("../../lib/codemirror")):"function"==typeof define&&define.amd?define(["../../lib/codemirror"],h):h(CodeMirror)})(function(h){function B(a,b){this.cm=a;this.options=b;this.widget=null;this.tick=this.debounce=0;this.startPos=this.cm.getCursor("start");this.startLen=this.cm.getLine(this.startPos.line).length-this.cm.getSelection().length;if(this.options.updateOnCursorActivity){var c=this;a.on("cursorActivity",this.activityFunc=
function(){c.cursorActivity()})}}function J(a,b){function c(r,g){var m="string"!=typeof g?function(k){return g(k,b)}:d.hasOwnProperty(g)?d[g]:g;p[r]=m}var d={Up:function(){b.moveFocus(-1)},Down:function(){b.moveFocus(1)},PageUp:function(){b.moveFocus(-b.menuSize()+1,!0)},PageDown:function(){b.moveFocus(b.menuSize()-1,!0)},Home:function(){b.setFocus(0)},End:function(){b.setFocus(b.length-1)},Enter:b.pick,Tab:b.pick,Esc:b.close};/Mac/.test(navigator.platform)&&(d["Ctrl-P"]=function(){b.moveFocus(-1)},
d["Ctrl-N"]=function(){b.moveFocus(1)});var e=a.options.customKeys,p=e?{}:d;if(e)for(var f in e)e.hasOwnProperty(f)&&c(f,e[f]);if(a=a.options.extraKeys)for(f in a)a.hasOwnProperty(f)&&c(f,a[f]);return p}function C(a,b){for(;b&&b!=a;){if("LI"===b.nodeName.toUpperCase()&&b.parentNode==a)return b;b=b.parentNode}}function D(a,b){this.id="cm-complete-"+Math.floor(Math.random(1E6));this.completion=a;this.data=b;this.picked=!1;var c=this,d=a.cm,e=d.getInputField().ownerDocument,p=e.defaultView||e.parentWindow,
f=this.hints=e.createElement("ul");f.setAttribute("role","listbox");f.setAttribute("aria-expanded","true");f.id=this.id;f.className="CodeMirror-hints "+a.cm.options.theme;this.selectedHint=b.selectedHint||0;for(var r=b.list,g=0;g<r.length;++g){var m=f.appendChild(e.createElement("li")),k=r[g],l="CodeMirror-hint"+(g!=this.selectedHint?"":" CodeMirror-hint-active");null!=k.className&&(l=k.className+" "+l);m.className=l;g==this.selectedHint&&m.setAttribute("aria-selected","true");m.id=this.id+"-"+g;
m.setAttribute("role","option");k.render?k.render(m,b,k):m.appendChild(e.createTextNode(k.displayText||("string"==typeof k?k:k.text)));m.hintId=g}l=a.options.container||e.body;g=d.cursorCoords(a.options.alignWithWord?b.from:null);var v=g.left,w=g.bottom,E=!0,q=m=0;if(l!==e.body){k=-1!==["absolute","relative","fixed"].indexOf(p.getComputedStyle(l).position)?l:l.offsetParent;var t=k.getBoundingClientRect();q=e.body.getBoundingClientRect();m=t.left-q.left-k.scrollLeft;q=t.top-q.top-k.scrollTop}f.style.left=
v-m+"px";f.style.top=w-q+"px";k=p.innerWidth||Math.max(e.body.offsetWidth,e.documentElement.offsetWidth);var y=p.innerHeight||Math.max(e.body.offsetHeight,e.documentElement.offsetHeight);l.appendChild(f);d.getInputField().setAttribute("aria-autocomplete","list");d.getInputField().setAttribute("aria-owns",this.id);d.getInputField().setAttribute("aria-activedescendant",this.id+"-"+this.selectedHint);l=a.options.moveOnOverlap?f.getBoundingClientRect():new DOMRect;t=a.options.paddingForScrollbar?f.scrollHeight>
f.clientHeight+1:!1;var u;setTimeout(function(){u=d.getScrollInfo()});if(0<l.bottom-y){var z=l.bottom-l.top;0<g.top-(g.bottom-l.top)-z?(f.style.top=(w=g.top-z-q)+"px",E=!1):z>y&&(f.style.height=y-5+"px",f.style.top=(w=g.bottom-l.top-q)+"px",q=d.getCursor(),b.from.ch!=q.ch&&(g=d.cursorCoords(q),f.style.left=(v=g.left-m)+"px",l=f.getBoundingClientRect()))}q=l.right-k;t&&(q+=d.display.nativeBarWidth);0<q&&(l.right-l.left>k&&(f.style.width=k-5+"px",q-=l.right-l.left-k),f.style.left=(v=g.left-q-m)+"px");
if(t)for(g=f.firstChild;g;g=g.nextSibling)g.style.paddingRight=d.display.nativeBarWidth+"px";d.addKeyMap(this.keyMap=J(a,{moveFocus:function(n,x){c.changeActive(c.selectedHint+n,x)},setFocus:function(n){c.changeActive(n)},menuSize:function(){return c.screenAmount()},length:r.length,close:function(){a.close()},pick:function(){c.pick()},data:b}));if(a.options.closeOnUnfocus){var F;d.on("blur",this.onBlur=function(){F=setTimeout(function(){a.close()},100)});d.on("focus",this.onFocus=function(){clearTimeout(F)})}d.on("scroll",
this.onScroll=function(){var n=d.getScrollInfo(),x=d.getWrapperElement().getBoundingClientRect();u||(u=d.getScrollInfo());var G=w+u.top-n.top,A=G-(p.pageYOffset||(e.documentElement||e.body).scrollTop);E||(A+=f.offsetHeight);if(A<=x.top||A>=x.bottom)return a.close();f.style.top=G+"px";f.style.left=v+u.left-n.left+"px"});h.on(f,"dblclick",function(n){(n=C(f,n.target||n.srcElement))&&null!=n.hintId&&(c.changeActive(n.hintId),c.pick())});h.on(f,"click",function(n){(n=C(f,n.target||n.srcElement))&&null!=
n.hintId&&(c.changeActive(n.hintId),a.options.completeOnSingleClick&&c.pick())});h.on(f,"mousedown",function(){setTimeout(function(){d.focus()},20)});g=this.getSelectedHintRange();0===g.from&&0===g.to||this.scrollToActive();h.signal(b,"select",r[this.selectedHint],f.childNodes[this.selectedHint]);return!0}function K(a,b){if(!a.somethingSelected())return b;a=[];for(var c=0;c<b.length;c++)b[c].supportsSelection&&a.push(b[c]);return a}function H(a,b,c,d){a.async?a(b,d,c):(a=a(b,c))&&a.then?a.then(d):
d(a)}h.showHint=function(a,b,c){if(!b)return a.showHint(c);c&&c.async&&(b.async=!0);b={hint:b};if(c)for(var d in c)b[d]=c[d];return a.showHint(b)};h.defineExtension("showHint",function(a){var b=this.getCursor("start"),c=this.options.hintOptions,d={},e;for(e in I)d[e]=I[e];if(c)for(e in c)void 0!==c[e]&&(d[e]=c[e]);if(a)for(e in a)void 0!==a[e]&&(d[e]=a[e]);d.hint.resolve&&(d.hint=d.hint.resolve(this,b));a=d;b=this.listSelections();if(!(1<b.length)){if(this.somethingSelected()){if(!a.hint.supportsSelection)return;
for(e=0;e<b.length;e++)if(b[e].head.line!=b[e].anchor.line)return}this.state.completionActive&&this.state.completionActive.close();b=this.state.completionActive=new B(this,a);b.options.hint&&(h.signal(this,"startCompletion",this),b.update(!0))}});h.defineExtension("closeHint",function(){this.state.completionActive&&this.state.completionActive.close()});var L=window.requestAnimationFrame||function(a){return setTimeout(a,1E3/60)},M=window.cancelAnimationFrame||clearTimeout;B.prototype={close:function(){this.active()&&
(this.tick=this.cm.state.completionActive=null,this.options.updateOnCursorActivity&&this.cm.off("cursorActivity",this.activityFunc),this.widget&&this.data&&h.signal(this.data,"close"),this.widget&&this.widget.close(),h.signal(this.cm,"endCompletion",this.cm))},active:function(){return this.cm.state.completionActive==this},pick:function(a,b){var c=a.list[b],d=this;this.cm.operation(function(){c.hint?c.hint(d.cm,a,c):d.cm.replaceRange("string"==typeof c?c:c.text,c.from||a.from,c.to||a.to,"complete");
h.signal(a,"pick",c);d.cm.scrollIntoView()});this.options.closeOnPick&&this.close()},cursorActivity:function(){this.debounce&&(M(this.debounce),this.debounce=0);var a=this.startPos;this.data&&(a=this.data.from);var b=this.cm.getCursor(),c=this.cm.getLine(b.line);if(b.line!=this.startPos.line||c.length-b.ch!=this.startLen-this.startPos.ch||b.ch<a.ch||this.cm.somethingSelected()||!b.ch||this.options.closeCharacters.test(c.charAt(b.ch-1)))this.close();else{var d=this;this.debounce=L(function(){d.update()});
this.widget&&this.widget.disable()}},update:function(a){if(null!=this.tick){var b=this,c=++this.tick;H(this.options.hint,this.cm,this.options,function(d){b.tick==c&&b.finishUpdate(d,a)})}},finishUpdate:function(a,b){this.data&&h.signal(this.data,"update");b=this.widget&&this.widget.picked||b&&this.options.completeSingle;this.widget&&this.widget.close();(this.data=a)&&a.list.length&&(b&&1==a.list.length?this.pick(a,0):(this.widget=new D(this,a),h.signal(a,"shown")))}};D.prototype={close:function(){if(this.completion.widget==
this){this.completion.widget=null;this.hints.parentNode&&this.hints.parentNode.removeChild(this.hints);this.completion.cm.removeKeyMap(this.keyMap);var a=this.completion.cm.getInputField();a.removeAttribute("aria-activedescendant");a.removeAttribute("aria-owns");a=this.completion.cm;this.completion.options.closeOnUnfocus&&(a.off("blur",this.onBlur),a.off("focus",this.onFocus));a.off("scroll",this.onScroll)}},disable:function(){this.completion.cm.removeKeyMap(this.keyMap);var a=this;this.keyMap={Enter:function(){a.picked=
!0}};this.completion.cm.addKeyMap(this.keyMap)},pick:function(){this.completion.pick(this.data,this.selectedHint)},changeActive:function(a,b){a>=this.data.list.length?a=b?this.data.list.length-1:0:0>a&&(a=b?0:this.data.list.length-1);if(this.selectedHint!=a){if(b=this.hints.childNodes[this.selectedHint])b.className=b.className.replace(" CodeMirror-hint-active",""),b.removeAttribute("aria-selected");b=this.hints.childNodes[this.selectedHint=a];b.className+=" CodeMirror-hint-active";b.setAttribute("aria-selected",
"true");this.completion.cm.getInputField().setAttribute("aria-activedescendant",b.id);this.scrollToActive();h.signal(this.data,"select",this.data.list[this.selectedHint],b)}},scrollToActive:function(){var a=this.getSelectedHintRange(),b=this.hints.childNodes[a.from];a=this.hints.childNodes[a.to];var c=this.hints.firstChild;b.offsetTop<this.hints.scrollTop?this.hints.scrollTop=b.offsetTop-c.offsetTop:a.offsetTop+a.offsetHeight>this.hints.scrollTop+this.hints.clientHeight&&(this.hints.scrollTop=a.offsetTop+
a.offsetHeight-this.hints.clientHeight+c.offsetTop)},screenAmount:function(){return Math.floor(this.hints.clientHeight/this.hints.firstChild.offsetHeight)||1},getSelectedHintRange:function(){var a=this.completion.options.scrollMargin||0;return{from:Math.max(0,this.selectedHint-a),to:Math.min(this.data.list.length-1,this.selectedHint+a)}}};h.registerHelper("hint","auto",{resolve:function(a,b){var c=a.getHelpers(b,"hint"),d;return c.length?(a=function(e,p,f){function r(m){if(m==g.length)return p(null);
H(g[m],e,f,function(k){k&&0<k.list.length?p(k):r(m+1)})}var g=K(e,c);r(0)},a.async=!0,a.supportsSelection=!0,a):(d=a.getHelper(a.getCursor(),"hintWords"))?function(e){return h.hint.fromList(e,{words:d})}:h.hint.anyword?function(e,p){return h.hint.anyword(e,p)}:function(){}}});h.registerHelper("hint","fromList",function(a,b){var c=a.getCursor(),d=a.getTokenAt(c);a=h.Pos(c.line,d.start);d.start<c.ch&&/\w/.test(d.string.charAt(c.ch-d.start-1))?d=d.string.substr(0,c.ch-d.start):(d="",a=c);for(var e=[],
p=0;p<b.words.length;p++){var f=b.words[p];f.slice(0,d.length)==d&&e.push(f)}if(e.length)return{list:e,from:a,to:c}});h.commands.autocomplete=h.showHint;var I={hint:h.hint.auto,completeSingle:!0,alignWithWord:!0,closeCharacters:/[\s()\[\]{};:>,]/,closeOnPick:!0,closeOnUnfocus:!0,updateOnCursorActivity:!0,completeOnSingleClick:!0,container:null,customKeys:null,extraKeys:null,paddingForScrollbar:!0,moveOnOverlap:!0};h.defineOption("hintOptions",null)});

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b&&(b=!0);var d=a.doc,c={},e=c.cursors=document.createDocumentFragment(),f=c.selection=document.createDocumentFragment(),g=a.options.$customCursor;g&&(b=!0);for(var h=0;h<d.sel.ranges.length;h++)if(b||h!=d.sel.primIndex){var k=d.sel.ranges[h];if(!(k.from().line>=a.display.viewTo||k.to().line<a.display.viewFrom)){var l=k.empty();if(g){var m=g(a,k);m&&Nd(a,m,e)}else(l||a.options.showCursorWhenSelecting)&&Nd(a,k.head,e);l||Rg(a,k,f)}}return c}function Nd(a,b,d){var c=za(a,b,"div",null,null,!a.options.singleCursorHeightPerLine),
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.85*(c.other.bottom-c.other.top)+"px")}function Jc(a,b){return a.top-b.top||a.left-b.left}function Rg(a,b,d){function c(q,r,u,A){0>r&&(r=0);r=Math.round(r);A=Math.round(A);h.appendChild(v("div",null,"CodeMirror-selected","position: absolute; left: "+q+"px;\n                             top: "+r+"px; width: "+(null==u?m-q:u)+"px;\n                             height: "+(A-r)+"px"))}function e(q,r,u){function A(F,R){return Hc(a,t(q,F),"div",x,R)}function Y(F,R,H){F=cf(a,x,null,F);R="ltr"==R==("after"==
H)?"left":"right";H="after"==H?F.begin:F.end-(/\s/.test(x.text.charAt(F.end-1))?2:1);return A(H,R)[R]}var x=w(g,q),P=x.text.length,K,Q,S=Ia(x,g.direction);zg(S,r||0,null==u?P:u,function(F,R,H,L){var ha="ltr"==H,na=A(F,ha?"left":"right"),ta=A(R-1,ha?"right":"left"),fb=null==r&&0==F,gb=null==u&&R==P,Od=0==L;L=!S||L==S.length-1;3>=ta.top-na.top?(R=(n?fb:gb)&&Od?l:(ha?na:ta).left,c(R,na.top,((n?gb:fb)&&L?m:(ha?ta:na).right)-R,na.bottom)):(ha?(ha=n&&fb&&Od?l:na.left,fb=n?m:Y(F,H,"before"),F=n?l:Y(R,H,
"after"),gb=n&&gb&&L?m:ta.right):(ha=n?Y(F,H,"before"):l,fb=!n&&fb&&Od?m:na.right,F=!n&&gb&&L?l:ta.left,gb=n?Y(R,H,"after"):m),c(ha,na.top,fb-ha,na.bottom),na.bottom<ta.top&&c(l,na.bottom,null,ta.top),c(F,ta.top,gb-F,ta.bottom));if(!K||0>Jc(na,K))K=na;0>Jc(ta,K)&&(K=ta);if(!Q||0>Jc(na,Q))Q=na;0>Jc(ta,Q)&&(Q=ta)});return{start:K,end:Q}}var f=a.display,g=a.doc,h=document.createDocumentFragment(),k=Se(a.display),l=k.left,m=Math.max(f.sizerWidth,ab(a)-f.sizer.offsetLeft)-k.right,n="ltr"==g.direction;
f=b.from();b=b.to();if(f.line==b.line)e(f.line,f.ch,b.ch);else{var p=w(g,f.line);k=w(g,b.line);k=Ea(p)==Ea(k);f=e(f.line,f.ch,k?p.text.length+1:null).end;b=e(b.line,k?0:null,b.ch).start;k&&(f.top<b.top-2?(c(f.right,f.top,null,f.bottom),c(l,b.top,b.left,b.bottom)):c(f.right,f.top,b.left-f.right,f.bottom));f.bottom<b.top&&c(l,f.bottom,null,b.top)}d.appendChild(h)}function Pd(a){if(a.state.focused){var b=a.display;clearInterval(b.blinker);var d=!0;b.cursorDiv.style.visibility="";0<a.options.cursorBlinkRate?
b.blinker=setInterval(function(){a.hasFocus()||ub(a);b.cursorDiv.style.visibility=(d=!d)?"":"hidden"},a.options.cursorBlinkRate):0>a.options.cursorBlinkRate&&(b.cursorDiv.style.visibility="hidden")}}function gf(a){a.hasFocus()||(a.display.input.focus(),a.state.focused||Qd(a))}function Rd(a){a.state.delayingBlurEvent=!0;setTimeout(function(){a.state.delayingBlurEvent&&(a.state.delayingBlurEvent=!1,a.state.focused&&ub(a))},100)}function Qd(a,b){a.state.delayingBlurEvent&&!a.state.draggingText&&(a.state.delayingBlurEvent=
!1);"nocursor"!=a.options.readOnly&&(a.state.focused||(W(a,"focus",a,b),a.state.focused=!0,Wa(a.display.wrapper,"CodeMirror-focused"),a.curOp||a.display.selForContextMenu==a.doc.sel||(a.display.input.reset(),fa&&setTimeout(function(){return a.display.input.reset(!0)},20)),a.display.input.receivedFocus()),Pd(a))}function ub(a,b){a.state.delayingBlurEvent||(a.state.focused&&(W(a,"blur",a,b),a.state.focused=!1,hb(a.display.wrapper,"CodeMirror-focused")),clearInterval(a.display.blinker),setTimeout(function(){a.state.focused||
(a.display.shift=!1)},150))}function Kc(a){for(var b=a.display,d=b.lineDiv.offsetTop,c=Math.max(0,b.scroller.getBoundingClientRect().top),e=b.lineDiv.getBoundingClientRect().top,f=0,g=0;g<b.view.length;g++){var h=b.view[g],k=a.options.lineWrapping,l=0;if(!h.hidden){e+=h.line.height;if(G&&8>T){k=h.node.offsetTop+h.node.offsetHeight;var m=k-d;d=k}else{var n=h.node.getBoundingClientRect();m=n.bottom-n.top;!k&&h.text.firstChild&&(l=h.text.firstChild.getBoundingClientRect().right-n.left-1)}k=h.line.height-
m;if(.005<k||-.005>k)if(e<c&&(f-=k),Ca(h.line,m),hf(h.line),h.rest)for(m=0;m<h.rest.length;m++)hf(h.rest[m]);l>a.display.sizerWidth&&(l=Math.ceil(l/sb(a.display)),l>a.display.maxLineLength&&(a.display.maxLineLength=l,a.display.maxLine=h.line,a.display.maxLineChanged=!0))}}2<Math.abs(f)&&(b.scroller.scrollTop+=f)}function hf(a){if(a.widgets)for(var b=0;b<a.widgets.length;++b){var d=a.widgets[b],c=d.node.parentNode;c&&(d.height=c.offsetHeight)}}function Lc(a,b,d){var c=d&&null!=d.top?Math.max(0,d.top):
a.scroller.scrollTop;c=Math.floor(c-a.lineSpace.offsetTop);var e=d&&null!=d.bottom?d.bottom:c+a.wrapper.clientHeight;c=$a(b,c);e=$a(b,e);if(d&&d.ensure){var f=d.ensure.from.line;d=d.ensure.to.line;f<c?(c=f,e=$a(b,Fa(w(b,f))+a.wrapper.clientHeight)):Math.min(d,b.lastLine())>=e&&(c=$a(b,Fa(w(b,d))-a.wrapper.clientHeight),e=d)}return{from:c,to:Math.max(e,c+1)}}function Sd(a,b){var d=a.display,c=tb(a.display);0>b.top&&(b.top=0);var e=a.curOp&&null!=a.curOp.scrollTop?a.curOp.scrollTop:d.scroller.scrollTop,
f=Dd(a),g={};b.bottom-b.top>f&&(b.bottom=b.top+f);var h=a.doc.height+Cd(d),k=b.top<c;c=b.bottom>h-c;b.top<e?g.scrollTop=k?0:b.top:b.bottom>e+f&&(f=Math.min(b.top,(c?h:b.bottom)-f),f!=e&&(g.scrollTop=f));e=a.options.fixedGutter?0:d.gutters.offsetWidth;f=a.curOp&&null!=a.curOp.scrollLeft?a.curOp.scrollLeft:d.scroller.scrollLeft-e;a=ab(a)-d.gutters.offsetWidth;if(d=b.right-b.left>a)b.right=b.left+a;10>b.left?g.scrollLeft=0:b.left<f?g.scrollLeft=Math.max(0,b.left+e-(d?0:10)):b.right>a+f-3&&(g.scrollLeft=
b.right+(d?0:10)-a);return g}function Mc(a,b){null!=b&&(Nc(a),a.curOp.scrollTop=(null==a.curOp.scrollTop?a.doc.scrollTop:a.curOp.scrollTop)+b)}function vb(a){Nc(a);var b=a.getCursor();a.curOp.scrollToPos={from:b,to:b,margin:a.options.cursorScrollMargin}}function Ub(a,b,d){null==b&&null==d||Nc(a);null!=b&&(a.curOp.scrollLeft=b);null!=d&&(a.curOp.scrollTop=d)}function Nc(a){var b=a.curOp.scrollToPos;if(b){a.curOp.scrollToPos=null;var d=af(a,b.from),c=af(a,b.to);jf(a,d,c,b.margin)}}function jf(a,b,d,
c){b=Sd(a,{left:Math.min(b.left,d.left),top:Math.min(b.top,d.top)-c,right:Math.max(b.right,d.right),bottom:Math.max(b.bottom,d.bottom)+c});Ub(a,b.scrollLeft,b.scrollTop)}function Vb(a,b){2>Math.abs(a.doc.scrollTop-b)||(La||Td(a,{top:b}),kf(a,b,!0),La&&Td(a),Wb(a,100))}function kf(a,b,d){b=Math.max(0,Math.min(a.display.scroller.scrollHeight-a.display.scroller.clientHeight,b));if(a.display.scroller.scrollTop!=b||d)a.doc.scrollTop=b,a.display.scrollbars.setScrollTop(b),a.display.scroller.scrollTop!=
b&&(a.display.scroller.scrollTop=b)}function ib(a,b,d,c){b=Math.max(0,Math.min(b,a.display.scroller.scrollWidth-a.display.scroller.clientWidth));(d?b==a.doc.scrollLeft:2>Math.abs(a.doc.scrollLeft-b))&&!c||(a.doc.scrollLeft=b,lf(a),a.display.scroller.scrollLeft!=b&&(a.display.scroller.scrollLeft=b),a.display.scrollbars.setScrollLeft(b))}function Xb(a){var b=a.display,d=b.gutters.offsetWidth,c=Math.round(a.doc.height+Cd(a.display));return{clientHeight:b.scroller.clientHeight,viewHeight:b.wrapper.clientHeight,
scrollWidth:b.scroller.scrollWidth,clientWidth:b.scroller.clientWidth,viewWidth:b.wrapper.clientWidth,barLeft:a.options.fixedGutter?d:0,docHeight:c,scrollHeight:c+Ga(a)+b.barHeight,nativeBarWidth:b.nativeBarWidth,gutterWidth:d}}function wb(a,b){b||(b=Xb(a));var d=a.display.barWidth,c=a.display.barHeight;mf(a,b);for(b=0;4>b&&d!=a.display.barWidth||c!=a.display.barHeight;b++)d!=a.display.barWidth&&a.options.lineWrapping&&Kc(a),mf(a,Xb(a)),d=a.display.barWidth,c=a.display.barHeight}function mf(a,b){var d=
a.display,c=d.scrollbars.update(b);d.sizer.style.paddingRight=(d.barWidth=c.right)+"px";d.sizer.style.paddingBottom=(d.barHeight=c.bottom)+"px";d.heightForcer.style.borderBottom=c.bottom+"px solid transparent";c.right&&c.bottom?(d.scrollbarFiller.style.display="block",d.scrollbarFiller.style.height=c.bottom+"px",d.scrollbarFiller.style.width=c.right+"px"):d.scrollbarFiller.style.display="";c.bottom&&a.options.coverGutterNextToScrollbar&&a.options.fixedGutter?(d.gutterFiller.style.display="block",
d.gutterFiller.style.height=c.bottom+"px",d.gutterFiller.style.width=b.gutterWidth+"px"):d.gutterFiller.style.display=""}function nf(a){a.display.scrollbars&&(a.display.scrollbars.clear(),a.display.scrollbars.addClass&&hb(a.display.wrapper,a.display.scrollbars.addClass));a.display.scrollbars=new of[a.options.scrollbarStyle](function(b){a.display.wrapper.insertBefore(b,a.display.scrollbarFiller);z(b,"mousedown",function(){a.state.focused&&setTimeout(function(){return a.display.input.focus()},0)});
b.setAttribute("cm-not-content","true")},function(b,d){"horizontal"==d?ib(a,b):Vb(a,b)},a);a.display.scrollbars.addClass&&Wa(a.display.wrapper,a.display.scrollbars.addClass)}function jb(a){a.curOp={cm:a,viewChanged:!1,startHeight:a.doc.height,forceUpdate:!1,updateInput:0,typing:!1,changeObjs:null,cursorActivityHandlers:null,cursorActivityCalled:0,selectionChanged:!1,updateMaxLine:!1,scrollLeft:null,scrollTop:null,scrollToPos:null,focus:!1,id:++Sg,markArrays:null};a=a.curOp;rb?rb.ops.push(a):a.ownsGroup=
rb={ops:[a],delayedCallbacks:[]}}function kb(a){(a=a.curOp)&&Lg(a,function(b){for(var d=0;d<b.ops.length;d++)b.ops[d].cm.curOp=null;b=b.ops;for(d=0;d<b.length;d++){var c=b[d],e=c.cm,f=e.display,g=e.display;!g.scrollbarsClipped&&g.scroller.offsetWidth&&(g.nativeBarWidth=g.scroller.offsetWidth-g.scroller.clientWidth,g.heightForcer.style.height=Ga(e)+"px",g.sizer.style.marginBottom=-g.nativeBarWidth+"px",g.sizer.style.borderRightWidth=Ga(e)+"px",g.scrollbarsClipped=!0);c.updateMaxLine&&yd(e);c.mustUpdate=
c.viewChanged||c.forceUpdate||null!=c.scrollTop||c.scrollToPos&&(c.scrollToPos.from.line<f.viewFrom||c.scrollToPos.to.line>=f.viewTo)||f.maxLineChanged&&e.options.lineWrapping;c.update=c.mustUpdate&&new Oc(e,c.mustUpdate&&{top:c.scrollTop,ensure:c.scrollToPos},c.forceUpdate)}for(d=0;d<b.length;d++)c=b[d],c.updatedDisplay=c.mustUpdate&&Ud(c.cm,c.update);for(d=0;d<b.length;d++)if(c=b[d],e=c.cm,f=e.display,c.updatedDisplay&&Kc(e),c.barMeasure=Xb(e),f.maxLineChanged&&!e.options.lineWrapping&&(g=f.maxLine.text.length,
g=ya(e,cb(e,f.maxLine),g,void 0),c.adjustWidthTo=g.left+3,e.display.sizerWidth=c.adjustWidthTo,c.barMeasure.scrollWidth=Math.max(f.scroller.clientWidth,f.sizer.offsetLeft+c.adjustWidthTo+Ga(e)+e.display.barWidth),c.maxScrollLeft=Math.max(0,f.sizer.offsetLeft+c.adjustWidthTo-ab(e))),c.updatedDisplay||c.selectionChanged)c.preparedSelection=f.input.prepareSelection();for(d=0;d<b.length;d++)c=b[d],e=c.cm,null!=c.adjustWidthTo&&(e.display.sizer.style.minWidth=c.adjustWidthTo+"px",c.maxScrollLeft<e.doc.scrollLeft&&
ib(e,Math.min(e.display.scroller.scrollLeft,c.maxScrollLeft),!0),e.display.maxLineChanged=!1),f=c.focus&&c.focus==ka(),c.preparedSelection&&e.display.input.showSelection(c.preparedSelection,f),(c.updatedDisplay||c.startHeight!=e.doc.height)&&wb(e,c.barMeasure),c.updatedDisplay&&Vd(e,c.barMeasure),c.selectionChanged&&Pd(e),e.state.focused&&c.updateInput&&e.display.input.reset(c.typing),f&&gf(c.cm);for(d=0;d<b.length;d++){var h=void 0;c=b[d];e=c.cm;f=e.display;g=e.doc;c.updatedDisplay&&pf(e,c.update);
null==f.wheelStartX||null==c.scrollTop&&null==c.scrollLeft&&!c.scrollToPos||(f.wheelStartX=f.wheelStartY=null);null!=c.scrollTop&&kf(e,c.scrollTop,c.forceScroll);null!=c.scrollLeft&&ib(e,c.scrollLeft,!0,!0);if(c.scrollToPos){var k=C(g,c.scrollToPos.from);var l=C(g,c.scrollToPos.to);var m=c.scrollToPos.margin;null==m&&(m=0);e.options.lineWrapping||k!=l||(l="before"==k.sticky?t(k.line,k.ch+1,"before"):k,k=k.ch?t(k.line,"before"==k.sticky?k.ch-1:k.ch,"after"):k);for(var n=0;5>n;n++){var p=!1;h=za(e,
k);var q=l&&l!=k?za(e,l):h;h={left:Math.min(h.left,q.left),top:Math.min(h.top,q.top)-m,right:Math.max(h.left,q.left),bottom:Math.max(h.bottom,q.bottom)+m};q=Sd(e,h);var r=e.doc.scrollTop,u=e.doc.scrollLeft;null!=q.scrollTop&&(Vb(e,q.scrollTop),1<Math.abs(e.doc.scrollTop-r)&&(p=!0));null!=q.scrollLeft&&(ib(e,q.scrollLeft),1<Math.abs(e.doc.scrollLeft-u)&&(p=!0));if(!p)break}l=h;Z(e,"scrollCursorIntoView")||(m=e.display,n=m.sizer.getBoundingClientRect(),k=null,0>l.top+n.top?k=!0:l.bottom+n.top>(window.innerHeight||
document.documentElement.clientHeight)&&(k=!1),null==k||Tg||(l=v("div","\u200b",null,"position: absolute;\n                         top: "+(l.top-m.viewOffset-e.display.lineSpace.offsetTop)+"px;\n                         height: "+(l.bottom-l.top+Ga(e)+m.barHeight)+"px;\n                         left: "+l.left+"px; width: "+Math.max(2,l.right-l.left)+"px;"),e.display.lineSpace.appendChild(l),l.scrollIntoView(k),e.display.lineSpace.removeChild(l)))}l=c.maybeHiddenMarkers;k=c.maybeUnhiddenMarkers;if(l)for(m=
0;m<l.length;++m)l[m].lines.length||W(l[m],"hide");if(k)for(l=0;l<k.length;++l)k[l].lines.length&&W(k[l],"unhide");f.wrapper.offsetHeight&&(g.scrollTop=e.display.scroller.scrollTop);c.changeObjs&&W(e,"changes",e,c.changeObjs);c.update&&c.update.finish()}})}function qa(a,b){if(a.curOp)return b();jb(a);try{return b()}finally{kb(a)}}function ba(a,b){return function(){if(a.curOp)return b.apply(a,arguments);jb(a);try{return b.apply(a,arguments)}finally{kb(a)}}}function ia(a){return function(){if(this.curOp)return a.apply(this,
arguments);jb(this);try{return a.apply(this,arguments)}finally{kb(this)}}}function ca(a){return function(){var b=this.cm;if(!b||b.curOp)return a.apply(this,arguments);jb(b);try{return a.apply(this,arguments)}finally{kb(b)}}}function Wb(a,b){a.doc.highlightFrontier<a.display.viewTo&&a.state.highlight.set(b,fd(Ug,a))}function Ug(a){var b=a.doc;if(!(b.highlightFrontier>=a.display.viewTo)){var d=+new Date+a.options.workTime,c=Mb(a,b.highlightFrontier),e=[];b.iter(c.line,Math.min(b.first+b.size,a.display.viewTo+
500),function(f){if(c.line>=a.display.viewFrom){var g=f.styles,h=f.text.length>a.options.maxHighlightLength?Ya(b.mode,c.state):null,k=xe(a,f,c,!0);h&&(c.state=h);f.styles=k.styles;h=f.styleClasses;(k=k.classes)?f.styleClasses=k:h&&(f.styleClasses=null);k=!g||g.length!=f.styles.length||h!=k&&(!h||!k||h.bgClass!=k.bgClass||h.textClass!=k.textClass);for(h=0;!k&&h<g.length;++h)k=g[h]!=f.styles[h];k&&e.push(c.line);f.stateAfter=c.save()}else f.text.length<=a.options.maxHighlightLength&&sd(a,f.text,c),
f.stateAfter=0==c.line%5?c.save():null;c.nextLine();if(+new Date>d)return Wb(a,a.options.workDelay),!0});b.highlightFrontier=c.line;b.modeFrontier=Math.max(b.modeFrontier,c.line);e.length&&qa(a,function(){for(var f=0;f<e.length;f++)Qa(a,e[f],"text")})}}function Ud(a,b){var d=a.display,c=a.doc;if(b.editorIsHidden)return Pa(a),!1;if(!b.force&&b.visible.from>=d.viewFrom&&b.visible.to<=d.viewTo&&(null==d.updateLineNumbers||d.updateLineNumbers>=d.viewTo)&&d.renderedView==d.view&&0==ef(a))return!1;qf(a)&&
(Pa(a),b.dims=Fd(a));var e=c.first+c.size,f=Math.max(b.visible.from-a.options.viewportMargin,c.first),g=Math.min(e,b.visible.to+a.options.viewportMargin);d.viewFrom<f&&20>f-d.viewFrom&&(f=Math.max(c.first,d.viewFrom));d.viewTo>g&&20>d.viewTo-g&&(g=Math.min(e,d.viewTo));Ja&&(f=wd(a.doc,f),g=Ie(a.doc,g));c=f!=d.viewFrom||g!=d.viewTo||d.lastWrapHeight!=b.wrapperHeight||d.lastWrapWidth!=b.wrapperWidth;e=a.display;0==e.view.length||f>=e.viewTo||g<=e.viewFrom?(e.view=Dc(a,f,g),e.viewFrom=f):(e.viewFrom>
f?e.view=Dc(a,f,e.viewFrom).concat(e.view):e.viewFrom<f&&(e.view=e.view.slice(bb(a,f))),e.viewFrom=f,e.viewTo<g?e.view=e.view.concat(Dc(a,e.viewTo,g)):e.viewTo>g&&(e.view=e.view.slice(0,bb(a,g))));e.viewTo=g;d.viewOffset=Fa(w(a.doc,d.viewFrom));a.display.mover.style.top=d.viewOffset+"px";g=ef(a);if(!c&&0==g&&!b.force&&d.renderedView==d.view&&(null==d.updateLineNumbers||d.updateLineNumbers>=d.viewTo))return!1;a.hasFocus()?f=null:(f=ka())&&ja(a.display.lineDiv,f)?(f={activeElt:f},window.getSelection&&
(e=window.getSelection(),e.anchorNode&&e.extend&&ja(a.display.lineDiv,e.anchorNode)&&(f.anchorNode=e.anchorNode,f.anchorOffset=e.anchorOffset,f.focusNode=e.focusNode,f.focusOffset=e.focusOffset))):f=null;4<g&&(d.lineDiv.style.display="none");Vg(a,d.updateLineNumbers,b.dims);4<g&&(d.lineDiv.style.display="");d.renderedView=d.view;(g=f)&&g.activeElt&&g.activeElt!=ka()&&(g.activeElt.focus(),!/^(INPUT|TEXTAREA)$/.test(g.activeElt.nodeName)&&g.anchorNode&&ja(document.body,g.anchorNode)&&ja(document.body,
g.focusNode)&&(f=window.getSelection(),e=document.createRange(),e.setEnd(g.anchorNode,g.anchorOffset),e.collapse(!1),f.removeAllRanges(),f.addRange(e),f.extend(g.focusNode,g.focusOffset)));E(d.cursorDiv);E(d.selectionDiv);d.gutters.style.height=d.sizer.style.minHeight=0;c&&(d.lastWrapHeight=b.wrapperHeight,d.lastWrapWidth=b.wrapperWidth,Wb(a,400));d.updateLineNumbers=null;return!0}function pf(a,b){for(var d=b.viewport,c=!0;;c=!1){if(c&&a.options.lineWrapping&&b.oldDisplayWidth!=ab(a))c&&(b.visible=
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String.fromCharCode(null==d?b:d),"\b"!=b&&!kh(this,a,b))this.display.input.onKeyPress(a)}}function nh(a,b){var d=+new Date;if(jc&&jc.compare(d,a,b))return kc=jc=null,"triple";if(kc&&kc.compare(d,a,b))return jc=new he(d,a,b),kc=null,"double";kc=new he(d,a,b);jc=null;return"single"}function gg(a){var b=this.display;if(!(Z(this,a)||b.activeTouch&&b.input.supportsTouch()))if(b.input.ensurePolled(),b.shift=a.shiftKey,Ka(b,a))fa||(b.scroller.draggable=!1,setTimeout(function(){return b.scroller.draggable=
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a.doc.extend||c.shiftKey;null==e.addNew&&(e.addNew=xa?c.metaKey:c.ctrlKey);null==e.moveOnDrag&&(e.moveOnDrag=!(xa?c.altKey:c.ctrlKey));var f=a.doc.sel,g;a.options.dragDrop&&rh&&!a.isReadOnly()&&"single"==d&&-1<(g=f.contains(b))&&(0>B((g=f.ranges[g]).from(),b)||0<b.xRel)&&(0<B(g.to(),b)||0>b.xRel)?sh(a,c,b,e):th(a,c,b,e)}function sh(a,b,d,c){var e=a.display,f=!1,g=ba(a,function(l){fa&&(e.scroller.draggable=!1);a.state.draggingText=!1;a.state.delayingBlurEvent&&(a.hasFocus()?a.state.delayingBlurEvent=
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x)?(K=F.head,x=zc(P.from(),F.anchor)):(K=F.anchor,x=yc(P.to(),F.head)),P=l.ranges.slice(0),P[n]=uh(a,new I(C(k,x),K)),da(k,Ba(a,P,n),je)}function f(x){var P=++u,K=eb(a,x,!0,"rectangle"==c.unit);if(K)if(0!=B(K,q)){a.curOp.focus=ka();e(K);var Q=Lc(h,k);(K.line>=Q.to||K.line<Q.from)&&setTimeout(ba(a,function(){u==P&&f(x)}),150)}else{var S=x.clientY<r.top?-20:x.clientY>r.bottom?20:0;S&&setTimeout(ba(a,function(){u==P&&(h.scroller.scrollTop+=S,f(x))}),50)}}function g(x){a.state.selectingText=!1;u=Infinity;
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{scroll:!1,origin:"*mouse"})):1<m.length&&m[n].empty()&&"char"==c.unit&&!c.extend?(da(k,Ba(a,m.slice(0,n).concat(m.slice(n+1)),0),{scroll:!1,origin:"*mouse"}),l=k.sel):ce(k,n,p,je):(n=0,da(k,new ua([p],0),je),l=k.sel);var q=d,r=h.wrapper.getBoundingClientRect(),u=0,A=ba(a,function(x){0!==x.buttons&&ue(x)?f(x):g(x)}),Y=ba(a,g);a.state.selectingText=Y;z(h.wrapper.ownerDocument,"mousemove",A);z(h.wrapper.ownerDocument,"mouseup",Y)}function uh(a,b){var d=b.anchor,c=b.head,e=w(a.doc,d.line);if(0==B(d,
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20);xh(this);lg||(eh(),lg=!0);jb(this);this.curOp.forceUpdate=!0;xf(this,c);b.autofocus&&!Zb||this.hasFocus()?setTimeout(function(){d.hasFocus()&&!d.state.focused&&Qd(d)},20):ub(this);for(var f in ad)if(ad.hasOwnProperty(f))ad[f](this,b[f],Fb);qf(this);b.finishInit&&b.finishInit(this);for(c=0;c<ke.length;++c)ke[c](this);kb(this);fa&&b.lineWrapping&&"optimizelegibility"==getComputedStyle(a.lineDiv).textRendering&&(a.lineDiv.style.textRendering="auto")}function xh(a){function b(){c.activeTouch&&(e=
setTimeout(function(){return c.activeTouch=null},1E3),f=c.activeTouch,f.end=+new Date)}function d(h,k){if(null==k.left)return!0;var l=k.left-h.left;h=k.top-h.top;return 400<l*l+h*h}var c=a.display;z(c.scroller,"mousedown",ba(a,gg));G&&11>T?z(c.scroller,"dblclick",ba(a,function(h){if(!Z(a,h)){var k=eb(a,h);!k||Zc(a,h,"gutterClick",!0)||Ka(a.display,h)||(la(h),h=a.findWordAt(k),Sc(a.doc,h.anchor,h.head))}})):z(c.scroller,"dblclick",function(h){return Z(a,h)||la(h)});z(c.scroller,"contextmenu",function(h){return ig(a,
h)});z(c.input.getField(),"contextmenu",function(h){c.scroller.contains(h.target)||ig(a,h)});var e,f={end:0};z(c.scroller,"touchstart",function(h){var k;if(k=!Z(a,h))1!=h.touches.length?k=!1:(k=h.touches[0],k=1>=k.radiusX&&1>=k.radiusY),k=!k;k&&!Zc(a,h,"gutterClick",!0)&&(c.input.ensurePolled(),clearTimeout(e),k=+new Date,c.activeTouch={start:k,moved:!1,prev:300>=k-f.end?f:null},1==h.touches.length&&(c.activeTouch.left=h.touches[0].pageX,c.activeTouch.top=h.touches[0].pageY))});z(c.scroller,"touchmove",
function(){c.activeTouch&&(c.activeTouch.moved=!0)});z(c.scroller,"touchend",function(h){var k=c.activeTouch;if(k&&!Ka(c,h)&&null!=k.left&&!k.moved&&300>new Date-k.start){var l=a.coordsChar(c.activeTouch,"page");k=!k.prev||d(k,k.prev)?new I(l,l):!k.prev.prev||d(k,k.prev.prev)?a.findWordAt(l):new I(t(l.line,0),C(a.doc,t(l.line+1,0)));a.setSelection(k.anchor,k.head);a.focus();la(h)}b()});z(c.scroller,"touchcancel",b);z(c.scroller,"scroll",function(){c.scroller.clientHeight&&(Vb(a,c.scroller.scrollTop),
ib(a,c.scroller.scrollLeft,!0),W(a,"scroll",a))});z(c.scroller,"mousewheel",function(h){return tf(a,h)});z(c.scroller,"DOMMouseScroll",function(h){return tf(a,h)});z(c.wrapper,"scroll",function(){return c.wrapper.scrollTop=c.wrapper.scrollLeft=0});c.dragFunctions={enter:function(h){Z(a,h)||Kb(h)},over:function(h){if(!Z(a,h)){var k=eb(a,h);if(k){var l=document.createDocumentFragment();Nd(a,k,l);a.display.dragCursor||(a.display.dragCursor=v("div",null,"CodeMirror-cursors CodeMirror-dragcursors"),a.display.lineSpace.insertBefore(a.display.dragCursor,
a.display.cursorDiv));D(a.display.dragCursor,l)}Kb(h)}},start:function(h){if(G&&(!a.state.draggingText||100>+new Date-Uf))Kb(h);else if(!Z(a,h)&&!Ka(a.display,h)&&(h.dataTransfer.setData("Text",a.getSelection()),h.dataTransfer.effectAllowed="copyMove",h.dataTransfer.setDragImage&&!$c)){var k=v("img",null,null,"position: fixed; left: 0; top: 0;");k.src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";Aa&&(k.width=k.height=1,a.display.wrapper.appendChild(k),k._top=k.offsetTop);
h.dataTransfer.setDragImage(k,0,0);Aa&&k.parentNode.removeChild(k)}},drop:ba(a,dh),leave:function(h){Z(a,h)||Tf(a)}};var g=c.input.getField();z(g,"keyup",function(h){return eg.call(a,h)});z(g,"keydown",ba(a,dg));z(g,"keypress",ba(a,fg));z(g,"focus",function(h){return Qd(a,h)});z(g,"blur",function(h){return ub(a,h)})}function lc(a,b,d,c){var e=a.doc,f;null==d&&(d="add");"smart"==d&&(e.mode.indent?f=Mb(a,b).state:d="prev");var g=a.options.tabSize,h=w(e,b),k=va(h.text,null,g);h.stateAfter&&(h.stateAfter=
null);var l=h.text.match(/^\s*/)[0];if(!c&&!/\S/.test(h.text)){var m=0;d="not"}else if("smart"==d&&(m=e.mode.indent(f,h.text.slice(l.length),h.text),m==Yc||150<m)){if(!c)return;d="prev"}"prev"==d?m=b>e.first?va(w(e,b-1).text,null,g):0:"add"==d?m=k+a.options.indentUnit:"subtract"==d?m=k-a.options.indentUnit:"number"==typeof d&&(m=k+d);m=Math.max(0,m);d="";c=0;if(a.options.indentWithTabs)for(a=Math.floor(m/g);a;--a)c+=g,d+="\t";c<m&&(d+=hd(m-c));if(d!=l)return Bb(e,d,t(b,0),t(b,l.length),"+input"),
h.stateAfter=null,!0;for(g=0;g<e.sel.ranges.length;g++)if(h=e.sel.ranges[g],h.head.line==b&&h.head.ch<l.length){b=t(b,l.length);ce(e,g,new I(b,b));break}}function le(a,b,d,c,e){var f=a.doc;a.display.shift=!1;c||(c=f.sel);var g=+new Date-200,h="paste"==e||a.state.pasteIncoming>g,k=me(b),l=null;if(h&&1<c.ranges.length)if(ra&&ra.text.join("\n")==b){if(0==c.ranges.length%ra.text.length){l=[];for(var m=0;m<ra.text.length;m++)l.push(f.splitLines(ra.text[m]))}}else k.length==c.ranges.length&&a.options.pasteLinesPerSelection&&
(l=uc(k,function(u){return[u]}));m=a.curOp.updateInput;for(var n=c.ranges.length-1;0<=n;n--){var p=c.ranges[n],q=p.from(),r=p.to();p.empty()&&(d&&0<d?q=t(q.line,q.ch-d):a.state.overwrite&&!h?r=t(r.line,Math.min(w(f,r.line).text.length,r.ch+J(k).length)):h&&ra&&ra.lineWise&&ra.text.join("\n")==k.join("\n")&&(q=r=t(q.line,0)));p={from:q,to:r,text:l?l[n%l.length]:k,origin:e||(h?"paste":a.state.cutIncoming>g?"cut":"+input")};Ab(a.doc,p);aa(a,"inputRead",a,p)}b&&!h&&mg(a,b);vb(a);2>a.curOp.updateInput&&
(a.curOp.updateInput=m);a.curOp.typing=!0;a.state.pasteIncoming=a.state.cutIncoming=-1}function ng(a,b){var d=a.clipboardData&&a.clipboardData.getData("Text");if(d)return a.preventDefault(),b.isReadOnly()||b.options.disableInput||qa(b,function(){return le(b,d,0,null,"paste")}),!0}function mg(a,b){if(a.options.electricChars&&a.options.smartIndent)for(var d=a.doc.sel,c=d.ranges.length-1;0<=c;c--){var e=d.ranges[c];if(!(100<e.head.ch||c&&d.ranges[c-1].head.line==e.head.line)){var f=a.getModeAt(e.head),
g=!1;if(f.electricChars)for(var h=0;h<f.electricChars.length;h++){if(-1<b.indexOf(f.electricChars.charAt(h))){g=lc(a,e.head.line,"smart");break}}else f.electricInput&&f.electricInput.test(w(a.doc,e.head.line).text.slice(0,e.head.ch))&&(g=lc(a,e.head.line,"smart"));g&&aa(a,"electricInput",a,e.head.line)}}}function og(a){for(var b=[],d=[],c=0;c<a.doc.sel.ranges.length;c++){var e=a.doc.sel.ranges[c].head.line;e={anchor:t(e,0),head:t(e+1,0)};d.push(e);b.push(a.getRange(e.anchor,e.head))}return{text:b,
ranges:d}}function pg(a,b,d,c){a.setAttribute("autocorrect",d?"":"off");a.setAttribute("autocapitalize",c?"":"off");a.setAttribute("spellcheck",!!b)}function qg(){var a=v("textarea",null,null,"position: absolute; bottom: -1em; padding: 0; width: 1px; height: 1em; min-height: 1em; outline: none"),b=v("div",[a],null,"overflow: hidden; position: relative; width: 3px; height: 0px;");fa?a.style.width="1000px":a.setAttribute("wrap","off");mc&&(a.style.border="1px solid black");pg(a);return b}function ne(a,
b,d,c,e){function f(u){if("codepoint"==c){var A=k.text.charCodeAt(b.ch+(0<d?0:-1));A=isNaN(A)?null:new t(b.line,Math.max(0,Math.min(k.text.length,b.ch+d*((0<d?55296<=A&&56320>A:56320<=A&&57343>A)?2:1))),-d)}else A=e?ih(a.cm,k,b,d):ee(k,b,d);if(null==A){if(u=!u)u=b.line+l,u<a.first||u>=a.first+a.size?u=!1:(b=new t(u,b.ch,b.sticky),u=k=w(a,u));if(u)b=fe(e,a.cm,k,b.line,l);else return!1}else b=A;return!0}var g=b,h=d,k=w(a,b.line),l=e&&"rtl"==a.direction?-d:d;if("char"==c||"codepoint"==c)f();else if("column"==
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function(){return{bottom:0,right:0}};pc.prototype.setScrollLeft=function(){};pc.prototype.setScrollTop=function(){};pc.prototype.clear=function(){};var of={"native":mb,"null":pc},Sg=0,Oc=function(a,b,d){var c=a.display;this.viewport=b;this.visible=Lc(c,a.doc,b);this.editorIsHidden=!c.wrapper.offsetWidth;this.wrapperHeight=c.wrapper.clientHeight;this.wrapperWidth=c.wrapper.clientWidth;this.oldDisplayWidth=ab(a);this.force=d;this.dims=Fd(a);this.events=[]};Oc.prototype.signal=function(a,b){wa(a,b)&&
this.events.push(arguments)};Oc.prototype.finish=function(){for(var a=0;a<this.events.length;a++)W.apply(null,this.events[a])};var Pc=0,Ma=null;G?Ma=-.53:La?Ma=15:Ec?Ma=-.7:$c&&(Ma=-1/3);var ua=function(a,b){this.ranges=a;this.primIndex=b};ua.prototype.primary=function(){return this.ranges[this.primIndex]};ua.prototype.equals=function(a){if(a==this)return!0;if(a.primIndex!=this.primIndex||a.ranges.length!=this.ranges.length)return!1;for(var b=0;b<this.ranges.length;b++){var d=this.ranges[b],c=a.ranges[b];
if(!qd(d.anchor,c.anchor)||!qd(d.head,c.head))return!1}return!0};ua.prototype.deepCopy=function(){for(var a=[],b=0;b<this.ranges.length;b++)a[b]=new I(rd(this.ranges[b].anchor),rd(this.ranges[b].head));return new ua(a,this.primIndex)};ua.prototype.somethingSelected=function(){for(var a=0;a<this.ranges.length;a++)if(!this.ranges[a].empty())return!0;return!1};ua.prototype.contains=function(a,b){b||(b=a);for(var d=0;d<this.ranges.length;d++){var c=this.ranges[d];if(0<=B(b,c.from())&&0>=B(a,c.to()))return d}return-1};
var I=function(a,b){this.anchor=a;this.head=b};I.prototype.from=function(){return zc(this.anchor,this.head)};I.prototype.to=function(){return yc(this.anchor,this.head)};I.prototype.empty=function(){return this.head.line==this.anchor.line&&this.head.ch==this.anchor.ch};cc.prototype={chunkSize:function(){return this.lines.length},removeInner:function(a,b){for(var d=a,c=a+b;d<c;++d){var e=this.lines[d];this.height-=e.height;var f=e;f.parent=null;Fe(f);aa(e,"delete")}this.lines.splice(a,b)},collapse:function(a){a.push.apply(a,
this.lines)},insertInner:function(a,b,d){this.height+=d;this.lines=this.lines.slice(0,a).concat(b).concat(this.lines.slice(a));for(a=0;a<b.length;++a)b[a].parent=this},iterN:function(a,b,d){for(b=a+b;a<b;++a)if(d(this.lines[a]))return!0}};dc.prototype={chunkSize:function(){return this.size},removeInner:function(a,b){this.size-=b;for(var d=0;d<this.children.length;++d){var c=this.children[d],e=c.chunkSize();if(a<e){var f=Math.min(b,e-a),g=c.height;c.removeInner(a,f);this.height-=g-c.height;e==f&&(this.children.splice(d--,
1),c.parent=null);if(0==(b-=f))break;a=0}else a-=e}25>this.size-b&&(1<this.children.length||!(this.children[0]instanceof cc))&&(a=[],this.collapse(a),this.children=[new cc(a)],this.children[0].parent=this)},collapse:function(a){for(var b=0;b<this.children.length;++b)this.children[b].collapse(a)},insertInner:function(a,b,d){this.size+=b.length;this.height+=d;for(var c=0;c<this.children.length;++c){var e=this.children[c],f=e.chunkSize();if(a<=f){e.insertInner(a,b,d);if(e.lines&&50<e.lines.length){for(b=
a=e.lines.length%25+25;b<e.lines.length;)d=new cc(e.lines.slice(b,b+=25)),e.height-=d.height,this.children.splice(++c,0,d),d.parent=this;e.lines=e.lines.slice(0,a);this.maybeSpill()}break}a-=f}},maybeSpill:function(){if(!(10>=this.children.length)){var a=this;do{var b=a.children.splice(a.children.length-5,5);b=new dc(b);if(a.parent){a.size-=b.size;a.height-=b.height;var d=ea(a.parent.children,a);a.parent.children.splice(d+1,0,b)}else d=new dc(a.children),d.parent=a,a.children=[d,b],a=d;b.parent=a.parent}while(10<
a.children.length);a.parent.maybeSpill()}},iterN:function(a,b,d){for(var c=0;c<this.children.length;++c){var e=this.children[c],f=e.chunkSize();if(a<f){f=Math.min(b,f-a);if(e.iterN(a,f,d))return!0;if(0==(b-=f))break;a=0}else a-=f}}};var ec=function(a,b,d){if(d)for(var c in d)d.hasOwnProperty(c)&&(this[c]=d[c]);this.doc=a;this.node=b};ec.prototype.clear=function(){var a=this.doc.cm,b=this.line.widgets,d=this.line,c=N(d);if(null!=c&&b){for(var e=0;e<b.length;++e)b[e]==this&&b.splice(e--,1);b.length||
(d.widgets=null);var f=Rb(this);Ca(d,Math.max(0,d.height-f));a&&(qa(a,function(){var g=-f;Fa(d)<(a.curOp&&a.curOp.scrollTop||a.doc.scrollTop)&&Mc(a,g);Qa(a,c,"widget")}),aa(a,"lineWidgetCleared",a,this,c))}};ec.prototype.changed=function(){var a=this,b=this.height,d=this.doc.cm,c=this.line;this.height=null;var e=Rb(this)-b;e&&(Oa(this.doc,c)||Ca(c,c.height+e),d&&qa(d,function(){d.curOp.forceUpdate=!0;Fa(c)<(d.curOp&&d.curOp.scrollTop||d.doc.scrollTop)&&Mc(d,e);aa(d,"lineWidgetChanged",d,a,N(c))}))};
nb(ec);var Rf=0,Ta=function(a,b){this.lines=[];this.type=b;this.doc=a;this.id=++Rf};Ta.prototype.clear=function(){if(!this.explicitlyCleared){var a=this.doc.cm,b=a&&!a.curOp;b&&jb(a);if(wa(this,"clear")){var d=this.find();d&&aa(this,"clear",d.from,d.to)}for(var c=d=null,e=0;e<this.lines.length;++e){var f=this.lines[e],g=Nb(f.markedSpans,this);a&&!this.collapsed?Qa(a,N(f),"text"):a&&(null!=g.to&&(c=N(f)),null!=g.from&&(d=N(f)));for(var h=f,k=void 0,l=f.markedSpans,m=g,n=0;n<l.length;++n)l[n]!=m&&(k||
(k=[])).push(l[n]);h.markedSpans=k;null==g.from&&this.collapsed&&!Oa(this.doc,f)&&a&&Ca(f,tb(a.display))}if(a&&this.collapsed&&!a.options.lineWrapping)for(e=0;e<this.lines.length;++e)f=Ea(this.lines[e]),g=Cc(f),g>a.display.maxLineLength&&(a.display.maxLine=f,a.display.maxLineLength=g,a.display.maxLineChanged=!0);null!=d&&a&&this.collapsed&&ma(a,d,c+1);this.lines.length=0;this.explicitlyCleared=!0;this.atomic&&this.doc.cantEdit&&(this.doc.cantEdit=!1,a&&Hf(a.doc));a&&aa(a,"markerCleared",a,this,d,
c);b&&kb(a);this.parent&&this.parent.clear()}};Ta.prototype.find=function(a,b){null==a&&"bookmark"==this.type&&(a=1);for(var d,c,e=0;e<this.lines.length;++e){var f=this.lines[e],g=Nb(f.markedSpans,this);if(null!=g.from&&(d=t(b?f:N(f),g.from),-1==a))return d;if(null!=g.to&&(c=t(b?f:N(f),g.to),1==a))return c}return d&&{from:d,to:c}};Ta.prototype.changed=function(){var a=this,b=this.find(-1,!0),d=this,c=this.doc.cm;b&&c&&qa(c,function(){var e=b.line,f=N(b.line);if(f=Ed(c,f))We(f),c.curOp.selectionChanged=
c.curOp.forceUpdate=!0;c.curOp.updateMaxLine=!0;Oa(d.doc,e)||null==d.height||(f=d.height,d.height=null,(f=Rb(d)-f)&&Ca(e,e.height+f));aa(c,"markerChanged",c,a)})};Ta.prototype.attachLine=function(a){if(!this.lines.length&&this.doc.cm){var b=this.doc.cm.curOp;b.maybeHiddenMarkers&&-1!=ea(b.maybeHiddenMarkers,this)||(b.maybeUnhiddenMarkers||(b.maybeUnhiddenMarkers=[])).push(this)}this.lines.push(a)};Ta.prototype.detachLine=function(a){this.lines.splice(ea(this.lines,a),1);!this.lines.length&&this.doc.cm&&
(a=this.doc.cm.curOp,(a.maybeHiddenMarkers||(a.maybeHiddenMarkers=[])).push(this))};nb(Ta);var fc=function(a,b){this.markers=a;this.primary=b;for(b=0;b<a.length;++b)a[b].parent=this};fc.prototype.clear=function(){if(!this.explicitlyCleared){this.explicitlyCleared=!0;for(var a=0;a<this.markers.length;++a)this.markers[a].clear();aa(this,"clear")}};fc.prototype.find=function(a,b){return this.primary.find(a,b)};nb(fc);var Fh=0,oa=function(a,b,d,c,e){if(!(this instanceof oa))return new oa(a,b,d,c,e);null==
d&&(d=0);dc.call(this,[new cc([new xb("",null)])]);this.first=d;this.scrollTop=this.scrollLeft=0;this.cantEdit=!1;this.cleanGeneration=1;this.modeFrontier=this.highlightFrontier=d;d=t(d,0);this.sel=Na(d);this.history=new Qc(null);this.id=++Fh;this.modeOption=b;this.lineSep=c;this.direction="rtl"==e?"rtl":"ltr";this.extend=!1;"string"==typeof a&&(a=this.splitLines(a));$d(this,{from:d,to:d,text:a});da(this,Na(d),Ha)};oa.prototype=pe(dc.prototype,{constructor:oa,iter:function(a,b,d){d?this.iterN(a-this.first,
b-a,d):this.iterN(this.first,this.first+this.size,a)},insert:function(a,b){for(var d=0,c=0;c<b.length;++c)d+=b[c].height;this.insertInner(a-this.first,b,d)},remove:function(a,b){this.removeInner(a-this.first,b)},getValue:function(a){var b=od(this,this.first,this.first+this.size);return!1===a?b:b.join(a||this.lineSeparator())},setValue:ca(function(a){var b=t(this.first,0),d=this.first+this.size-1;Ab(this,{from:b,to:t(d,w(this,d).text.length),text:this.splitLines(a),origin:"setValue",full:!0},!0);this.cm&&
Ub(this.cm,0,0);da(this,Na(b),Ha)}),replaceRange:function(a,b,d,c){b=C(this,b);d=d?C(this,d):b;Bb(this,a,b,d,c)},getRange:function(a,b,d){a=Za(this,C(this,a),C(this,b));return!1===d?a:""===d?a.join(""):a.join(d||this.lineSeparator())},getLine:function(a){return(a=this.getLineHandle(a))&&a.text},getLineHandle:function(a){if(Lb(this,a))return w(this,a)},getLineNumber:function(a){return N(a)},getLineHandleVisualStart:function(a){"number"==typeof a&&(a=w(this,a));return Ea(a)},lineCount:function(){return this.size},
firstLine:function(){return this.first},lastLine:function(){return this.first+this.size-1},clipPos:function(a){return C(this,a)},getCursor:function(a){var b=this.sel.primary();return null==a||"head"==a?b.head:"anchor"==a?b.anchor:"end"==a||"to"==a||!1===a?b.to():b.from()},listSelections:function(){return this.sel.ranges},somethingSelected:function(){return this.sel.somethingSelected()},setCursor:ca(function(a,b,d){a=C(this,"number"==typeof a?t(a,b||0):a);da(this,Na(a,null),d)}),setSelection:ca(function(a,
b,d){var c=C(this,a);a=C(this,b||a);da(this,Na(c,a),d)}),extendSelection:ca(function(a,b,d){Sc(this,C(this,a),b&&C(this,b),d)}),extendSelections:ca(function(a,b){Df(this,we(this,a),b)}),extendSelectionsBy:ca(function(a,b){a=uc(this.sel.ranges,a);Df(this,we(this,a),b)}),setSelections:ca(function(a,b,d){if(a.length){for(var c=[],e=0;e<a.length;e++)c[e]=new I(C(this,a[e].anchor),C(this,a[e].head||a[e].anchor));null==b&&(b=Math.min(a.length-1,this.sel.primIndex));da(this,Ba(this.cm,c,b),d)}}),addSelection:ca(function(a,
b,d){var c=this.sel.ranges.slice(0);c.push(new I(C(this,a),C(this,b||a)));da(this,Ba(this.cm,c,c.length-1),d)}),getSelection:function(a){for(var b=this.sel.ranges,d,c=0;c<b.length;c++){var e=Za(this,b[c].from(),b[c].to());d=d?d.concat(e):e}return!1===a?d:d.join(a||this.lineSeparator())},getSelections:function(a){for(var b=[],d=this.sel.ranges,c=0;c<d.length;c++){var e=Za(this,d[c].from(),d[c].to());!1!==a&&(e=e.join(a||this.lineSeparator()));b[c]=e}return b},replaceSelection:function(a,b,d){for(var c=
[],e=0;e<this.sel.ranges.length;e++)c[e]=a;this.replaceSelections(c,b,d||"+input")},replaceSelections:ca(function(a,b,d){for(var c=[],e=this.sel,f=0;f<e.ranges.length;f++){var g=e.ranges[f];c[f]={from:g.from(),to:g.to(),text:this.splitLines(a[f]),origin:d}}if(a=b&&"end"!=b){a=[];e=d=t(this.first,0);for(f=0;f<c.length;f++){var h=c[f];g=vf(h.from,d,e);var k=vf(Ra(h),d,e);d=h.to;e=k;"around"==b?(h=this.sel.ranges[f],h=0>B(h.head,h.anchor),a[f]=new I(h?k:g,h?g:k)):a[f]=new I(g,g)}a=new ua(a,this.sel.primIndex)}b=
a;for(a=c.length-1;0<=a;a--)Ab(this,c[a]);b?Ef(this,b):this.cm&&vb(this.cm)}),undo:ca(function(){Vc(this,"undo")}),redo:ca(function(){Vc(this,"redo")}),undoSelection:ca(function(){Vc(this,"undo",!0)}),redoSelection:ca(function(){Vc(this,"redo",!0)}),setExtending:function(a){this.extend=a},getExtending:function(){return this.extend},historySize:function(){for(var a=this.history,b=0,d=0,c=0;c<a.done.length;c++)a.done[c].ranges||++b;for(c=0;c<a.undone.length;c++)a.undone[c].ranges||++d;return{undo:b,
redo:d}},clearHistory:function(){var a=this;this.history=new Qc(this.history);Sa(this,function(b){return b.history=a.history},!0)},markClean:function(){this.cleanGeneration=this.changeGeneration(!0)},changeGeneration:function(a){a&&(this.history.lastOp=this.history.lastSelOp=this.history.lastOrigin=null);return this.history.generation},isClean:function(a){return this.history.generation==(a||this.cleanGeneration)},getHistory:function(){return{done:yb(this.history.done),undone:yb(this.history.undone)}},
setHistory:function(a){var b=this.history=new Qc(this.history);b.done=yb(a.done.slice(0),null,!0);b.undone=yb(a.undone.slice(0),null,!0)},setGutterMarker:ca(function(a,b,d){return bc(this,a,"gutter",function(c){var e=c.gutterMarkers||(c.gutterMarkers={});e[b]=d;!d&&qe(e)&&(c.gutterMarkers=null);return!0})}),clearGutter:ca(function(a){var b=this;this.iter(function(d){d.gutterMarkers&&d.gutterMarkers[a]&&bc(b,d,"gutter",function(){d.gutterMarkers[a]=null;qe(d.gutterMarkers)&&(d.gutterMarkers=null);
return!0})})}),lineInfo:function(a){if("number"==typeof a){if(!Lb(this,a))return null;var b=a;a=w(this,a);if(!a)return null}else if(b=N(a),null==b)return null;return{line:b,handle:a,text:a.text,gutterMarkers:a.gutterMarkers,textClass:a.textClass,bgClass:a.bgClass,wrapClass:a.wrapClass,widgets:a.widgets}},addLineClass:ca(function(a,b,d){return bc(this,a,"gutter"==b?"gutter":"class",function(c){var e="text"==b?"textClass":"background"==b?"bgClass":"gutter"==b?"gutterClass":"wrapClass";if(c[e]){if(y(d).test(c[e]))return!1;
c[e]+=" "+d}else c[e]=d;return!0})}),removeLineClass:ca(function(a,b,d){return bc(this,a,"gutter"==b?"gutter":"class",function(c){var e="text"==b?"textClass":"background"==b?"bgClass":"gutter"==b?"gutterClass":"wrapClass",f=c[e];if(f)if(null==d)c[e]=null;else{var g=f.match(y(d));if(!g)return!1;var h=g.index+g[0].length;c[e]=f.slice(0,g.index)+(g.index&&h!=f.length?" ":"")+f.slice(h)||null}else return!1;return!0})}),addLineWidget:ca(function(a,b,d){return ah(this,a,b,d)}),removeLineWidget:function(a){a.clear()},
markText:function(a,b,d){return Cb(this,C(this,a),C(this,b),d,d&&d.type||"range")},setBookmark:function(a,b){b={replacedWith:b&&(null==b.nodeType?b.widget:b),insertLeft:b&&b.insertLeft,clearWhenEmpty:!1,shared:b&&b.shared,handleMouseEvents:b&&b.handleMouseEvents};a=C(this,a);return Cb(this,a,a,b,"bookmark")},findMarksAt:function(a){a=C(this,a);var b=[],d=w(this,a.line).markedSpans;if(d)for(var c=0;c<d.length;++c){var e=d[c];(null==e.from||e.from<=a.ch)&&(null==e.to||e.to>=a.ch)&&b.push(e.marker.parent||
e.marker)}return b},findMarks:function(a,b,d){a=C(this,a);b=C(this,b);var c=[],e=a.line;this.iter(a.line,b.line+1,function(f){if(f=f.markedSpans)for(var g=0;g<f.length;g++){var h=f[g];null!=h.to&&e==a.line&&a.ch>=h.to||null==h.from&&e!=a.line||null!=h.from&&e==b.line&&h.from>=b.ch||d&&!d(h.marker)||c.push(h.marker.parent||h.marker)}++e});return c},getAllMarks:function(){var a=[];this.iter(function(b){if(b=b.markedSpans)for(var d=0;d<b.length;++d)null!=b[d].from&&a.push(b[d].marker)});return a},posFromIndex:function(a){var b,
d=this.first,c=this.lineSeparator().length;this.iter(function(e){e=e.text.length+c;if(e>a)return b=a,!0;a-=e;++d});return C(this,t(d,b))},indexFromPos:function(a){a=C(this,a);var b=a.ch;if(a.line<this.first||0>a.ch)return 0;var d=this.lineSeparator().length;this.iter(this.first,a.line,function(c){b+=c.text.length+d});return b},copy:function(a){var b=new oa(od(this,this.first,this.first+this.size),this.modeOption,this.first,this.lineSep,this.direction);b.scrollTop=this.scrollTop;b.scrollLeft=this.scrollLeft;
b.sel=this.sel;b.extend=!1;a&&(b.history.undoDepth=this.history.undoDepth,b.setHistory(this.getHistory()));return b},linkedDoc:function(a){a||(a={});var b=this.first,d=this.first+this.size;null!=a.from&&a.from>b&&(b=a.from);null!=a.to&&a.to<d&&(d=a.to);b=new oa(od(this,b,d),a.mode||this.modeOption,b,this.lineSep,this.direction);a.sharedHist&&(b.history=this.history);(this.linked||(this.linked=[])).push({doc:b,sharedHist:a.sharedHist});b.linked=[{doc:this,isParent:!0,sharedHist:a.sharedHist}];a=Sf(this);
for(d=0;d<a.length;d++){var c=a[d],e=c.find(),f=b.clipPos(e.from);e=b.clipPos(e.to);B(f,e)&&(f=Cb(b,f,e,c.primary,c.primary.type),c.markers.push(f),f.parent=c)}return b},unlinkDoc:function(a){a instanceof U&&(a=a.doc);if(this.linked)for(var b=0;b<this.linked.length;++b)if(this.linked[b].doc==a){this.linked.splice(b,1);a.unlinkDoc(this);ch(Sf(this));break}if(a.history==this.history){var d=[a.id];Sa(a,function(c){return d.push(c.id)},!0);a.history=new Qc(null);a.history.done=yb(this.history.done,d);
a.history.undone=yb(this.history.undone,d)}},iterLinkedDocs:function(a){Sa(this,a)},getMode:function(){return this.mode},getEditor:function(){return this.cm},splitLines:function(a){return this.lineSep?a.split(this.lineSep):me(a)},lineSeparator:function(){return this.lineSep||"\n"},setDirection:ca(function(a){"rtl"!=a&&(a="ltr");a!=this.direction&&(this.direction=a,this.iter(function(b){return b.order=null}),this.cm&&Yg(this.cm))})});oa.prototype.eachLine=oa.prototype.iter;for(var Uf=0,lg=!1,Ua={3:"Pause",
8:"Backspace",9:"Tab",13:"Enter",16:"Shift",17:"Ctrl",18:"Alt",19:"Pause",20:"CapsLock",27:"Esc",32:"Space",33:"PageUp",34:"PageDown",35:"End",36:"Home",37:"Left",38:"Up",39:"Right",40:"Down",44:"PrintScrn",45:"Insert",46:"Delete",59:";",61:"=",91:"Mod",92:"Mod",93:"Mod",106:"*",107:"=",109:"-",110:".",111:"/",145:"ScrollLock",173:"-",186:";",187:"=",188:",",189:"-",190:".",191:"/",192:"`",219:"[",220:"\\",221:"]",222:"'",224:"Mod",63232:"Up",63233:"Down",63234:"Left",63235:"Right",63272:"Delete",
63273:"Home",63275:"End",63276:"PageUp",63277:"PageDown",63302:"Insert"},qc=0;10>qc;qc++)Ua[qc+48]=Ua[qc+96]=String(qc);for(var dd=65;90>=dd;dd++)Ua[dd]=String.fromCharCode(dd);for(var rc=1;12>=rc;rc++)Ua[rc+111]=Ua[rc+63235]="F"+rc;var gc={basic:{Left:"goCharLeft",Right:"goCharRight",Up:"goLineUp",Down:"goLineDown",End:"goLineEnd",Home:"goLineStartSmart",PageUp:"goPageUp",PageDown:"goPageDown",Delete:"delCharAfter",Backspace:"delCharBefore","Shift-Backspace":"delCharBefore",Tab:"defaultTab","Shift-Tab":"indentAuto",
Enter:"newlineAndIndent",Insert:"toggleOverwrite",Esc:"singleSelection"},pcDefault:{"Ctrl-A":"selectAll","Ctrl-D":"deleteLine","Ctrl-Z":"undo","Shift-Ctrl-Z":"redo","Ctrl-Y":"redo","Ctrl-Home":"goDocStart","Ctrl-End":"goDocEnd","Ctrl-Up":"goLineUp","Ctrl-Down":"goLineDown","Ctrl-Left":"goGroupLeft","Ctrl-Right":"goGroupRight","Alt-Left":"goLineStart","Alt-Right":"goLineEnd","Ctrl-Backspace":"delGroupBefore","Ctrl-Delete":"delGroupAfter","Ctrl-S":"save","Ctrl-F":"find","Ctrl-G":"findNext","Shift-Ctrl-G":"findPrev",
"Shift-Ctrl-F":"replace","Shift-Ctrl-R":"replaceAll","Ctrl-[":"indentLess","Ctrl-]":"indentMore","Ctrl-U":"undoSelection","Shift-Ctrl-U":"redoSelection","Alt-U":"redoSelection",fallthrough:"basic"},emacsy:{"Ctrl-F":"goCharRight","Ctrl-B":"goCharLeft","Ctrl-P":"goLineUp","Ctrl-N":"goLineDown","Ctrl-A":"goLineStart","Ctrl-E":"goLineEnd","Ctrl-V":"goPageDown","Shift-Ctrl-V":"goPageUp","Ctrl-D":"delCharAfter","Ctrl-H":"delCharBefore","Alt-Backspace":"delWordBefore","Ctrl-K":"killLine","Ctrl-T":"transposeChars",
"Ctrl-O":"openLine"},macDefault:{"Cmd-A":"selectAll","Cmd-D":"deleteLine","Cmd-Z":"undo","Shift-Cmd-Z":"redo","Cmd-Y":"redo","Cmd-Home":"goDocStart","Cmd-Up":"goDocStart","Cmd-End":"goDocEnd","Cmd-Down":"goDocEnd","Alt-Left":"goGroupLeft","Alt-Right":"goGroupRight","Cmd-Left":"goLineLeft","Cmd-Right":"goLineRight","Alt-Backspace":"delGroupBefore","Ctrl-Alt-Backspace":"delGroupAfter","Alt-Delete":"delGroupAfter","Cmd-S":"save","Cmd-F":"find","Cmd-G":"findNext","Shift-Cmd-G":"findPrev","Cmd-Alt-F":"replace",
"Shift-Cmd-Alt-F":"replaceAll","Cmd-[":"indentLess","Cmd-]":"indentMore","Cmd-Backspace":"delWrappedLineLeft","Cmd-Delete":"delWrappedLineRight","Cmd-U":"undoSelection","Shift-Cmd-U":"redoSelection","Ctrl-Up":"goDocStart","Ctrl-Down":"goDocEnd",fallthrough:["basic","emacsy"]}};gc["default"]=xa?gc.macDefault:gc.pcDefault;var hc={selectAll:Jf,singleSelection:function(a){return a.setSelection(a.getCursor("anchor"),a.getCursor("head"),Ha)},killLine:function(a){return Eb(a,function(b){if(b.empty()){var d=
w(a.doc,b.head.line).text.length;return b.head.ch==d&&b.head.line<a.lastLine()?{from:b.head,to:t(b.head.line+1,0)}:{from:b.head,to:t(b.head.line,d)}}return{from:b.from(),to:b.to()}})},deleteLine:function(a){return Eb(a,function(b){return{from:t(b.from().line,0),to:C(a.doc,t(b.to().line+1,0))}})},delLineLeft:function(a){return Eb(a,function(b){return{from:t(b.from().line,0),to:b.from()}})},delWrappedLineLeft:function(a){return Eb(a,function(b){var d=a.charCoords(b.head,"div").top+5;return{from:a.coordsChar({left:0,
top:d},"div"),to:b.from()}})},delWrappedLineRight:function(a){return Eb(a,function(b){var d=a.charCoords(b.head,"div").top+5;d=a.coordsChar({left:a.display.lineDiv.offsetWidth+100,top:d},"div");return{from:b.from(),to:d}})},undo:function(a){return a.undo()},redo:function(a){return a.redo()},undoSelection:function(a){return a.undoSelection()},redoSelection:function(a){return a.redoSelection()},goDocStart:function(a){return a.extendSelection(t(a.firstLine(),0))},goDocEnd:function(a){return a.extendSelection(t(a.lastLine()))},
goLineStart:function(a){return a.extendSelectionsBy(function(b){return $f(a,b.head.line)},{origin:"+move",bias:1})},goLineStartSmart:function(a){return a.extendSelectionsBy(function(b){return ag(a,b.head)},{origin:"+move",bias:1})},goLineEnd:function(a){return a.extendSelectionsBy(function(b){b=b.head.line;var d=w(a.doc,b);var c=d;for(var e;e=qb(c,!1);)c=e.find(1,!0).line;c!=d&&(b=N(c));return fe(!0,a,d,b,-1)},{origin:"+move",bias:-1})},goLineRight:function(a){return a.extendSelectionsBy(function(b){b=
a.cursorCoords(b.head,"div").top+5;return a.coordsChar({left:a.display.lineDiv.offsetWidth+100,top:b},"div")},oc)},goLineLeft:function(a){return a.extendSelectionsBy(function(b){b=a.cursorCoords(b.head,"div").top+5;return a.coordsChar({left:0,top:b},"div")},oc)},goLineLeftSmart:function(a){return a.extendSelectionsBy(function(b){var d=a.cursorCoords(b.head,"div").top+5;d=a.coordsChar({left:0,top:d},"div");return d.ch<a.getLine(d.line).search(/\S/)?ag(a,b.head):d},oc)},goLineUp:function(a){return a.moveV(-1,
"line")},goLineDown:function(a){return a.moveV(1,"line")},goPageUp:function(a){return a.moveV(-1,"page")},goPageDown:function(a){return a.moveV(1,"page")},goCharLeft:function(a){return a.moveH(-1,"char")},goCharRight:function(a){return a.moveH(1,"char")},goColumnLeft:function(a){return a.moveH(-1,"column")},goColumnRight:function(a){return a.moveH(1,"column")},goWordLeft:function(a){return a.moveH(-1,"word")},goGroupRight:function(a){return a.moveH(1,"group")},goGroupLeft:function(a){return a.moveH(-1,
"group")},goWordRight:function(a){return a.moveH(1,"word")},delCharBefore:function(a){return a.deleteH(-1,"codepoint")},delCharAfter:function(a){return a.deleteH(1,"char")},delWordBefore:function(a){return a.deleteH(-1,"word")},delWordAfter:function(a){return a.deleteH(1,"word")},delGroupBefore:function(a){return a.deleteH(-1,"group")},delGroupAfter:function(a){return a.deleteH(1,"group")},indentAuto:function(a){return a.indentSelection("smart")},indentMore:function(a){return a.indentSelection("add")},
indentLess:function(a){return a.indentSelection("subtract")},insertTab:function(a){return a.replaceSelection("\t")},insertSoftTab:function(a){for(var b=[],d=a.listSelections(),c=a.options.tabSize,e=0;e<d.length;e++){var f=d[e].from();f=va(a.getLine(f.line),f.ch,c);b.push(hd(c-f%c))}a.replaceSelections(b)},defaultTab:function(a){a.somethingSelected()?a.indentSelection("add"):a.execCommand("insertTab")},transposeChars:function(a){return qa(a,function(){for(var b=a.listSelections(),d=[],c=0;c<b.length;c++)if(b[c].empty()){var e=
b[c].head,f=w(a.doc,e.line).text;if(f)if(e.ch==f.length&&(e=new t(e.line,e.ch-1)),0<e.ch)e=new t(e.line,e.ch+1),a.replaceRange(f.charAt(e.ch-1)+f.charAt(e.ch-2),t(e.line,e.ch-2),e,"+transpose");else if(e.line>a.doc.first){var g=w(a.doc,e.line-1).text;g&&(e=new t(e.line,1),a.replaceRange(f.charAt(0)+a.doc.lineSeparator()+g.charAt(g.length-1),t(e.line-1,g.length-1),e,"+transpose"))}d.push(new I(e,e))}a.setSelections(d)})},newlineAndIndent:function(a){return qa(a,function(){for(var b=a.listSelections(),
d=b.length-1;0<=d;d--)a.replaceRange(a.doc.lineSeparator(),b[d].anchor,b[d].head,"+input");b=a.listSelections();for(d=0;d<b.length;d++)a.indentLine(b[d].from().line,null,!0);vb(a)})},openLine:function(a){return a.replaceSelection("\n","start")},toggleOverwrite:function(a){return a.toggleOverwrite()}},jh=new Va,ge=null,he=function(a,b,d){this.time=a;this.pos=b;this.button=d};he.prototype.compare=function(a,b,d){return this.time+400>a&&0==B(b,this.pos)&&d==this.button};var kc,jc,Fb={toString:function(){return"CodeMirror.Init"}},
kg={},ad={};U.defaults=kg;U.optionHandlers=ad;var ke=[];U.defineInitHook=function(a){return ke.push(a)};var ra=null,O=function(a){this.cm=a;this.lastAnchorNode=this.lastAnchorOffset=this.lastFocusNode=this.lastFocusOffset=null;this.polling=new Va;this.composing=null;this.gracePeriod=!1;this.readDOMTimeout=null};O.prototype.init=function(a){function b(h){for(h=h.target;h;h=h.parentNode){if(h==g)return!0;if(/\bCodeMirror-(?:line)?widget\b/.test(h.className))break}return!1}function d(h){if(b(h)&&!Z(f,
h)){if(f.somethingSelected())ra={lineWise:!1,text:f.getSelections()},"cut"==h.type&&f.replaceSelection("",null,"cut");else if(f.options.lineWiseCopyCut){var k=og(f);ra={lineWise:!0,text:k.text};"cut"==h.type&&f.operation(function(){f.setSelections(k.ranges,0,Ha);f.replaceSelection("",null,"cut")})}else return;if(h.clipboardData){h.clipboardData.clearData();var l=ra.text.join("\n");h.clipboardData.setData("Text",l);if(h.clipboardData.getData("Text")==l){h.preventDefault();return}}var m=qg();h=m.firstChild;
f.display.lineSpace.insertBefore(m,f.display.lineSpace.firstChild);h.value=ra.text.join("\n");var n=ka();nc(h);setTimeout(function(){f.display.lineSpace.removeChild(m);n.focus();n==g&&e.showPrimarySelection()},50)}}var c=this,e=this,f=e.cm,g=e.div=a.lineDiv;g.contentEditable=!0;pg(g,f.options.spellcheck,f.options.autocorrect,f.options.autocapitalize);z(g,"paste",function(h){!b(h)||Z(f,h)||ng(h,f)||11>=T&&setTimeout(ba(f,function(){return c.updateFromDOM()}),20)});z(g,"compositionstart",function(h){c.composing=
{data:h.data,done:!1}});z(g,"compositionupdate",function(h){c.composing||(c.composing={data:h.data,done:!1})});z(g,"compositionend",function(h){c.composing&&(h.data!=c.composing.data&&c.readFromDOMSoon(),c.composing.done=!0)});z(g,"touchstart",function(){return e.forceCompositionEnd()});z(g,"input",function(){c.composing||c.readFromDOMSoon()});z(g,"copy",d);z(g,"cut",d)};O.prototype.screenReaderLabelChanged=function(a){a?this.div.setAttribute("aria-label",a):this.div.removeAttribute("aria-label")};
O.prototype.prepareSelection=function(){var a=ff(this.cm,!1);a.focus=ka()==this.div;return a};O.prototype.showSelection=function(a,b){a&&this.cm.display.view.length&&((a.focus||b)&&this.showPrimarySelection(),this.showMultipleSelections(a))};O.prototype.getSelection=function(){return this.cm.display.wrapper.ownerDocument.getSelection()};O.prototype.showPrimarySelection=function(){var a=this.getSelection(),b=this.cm,d=b.doc.sel.primary(),c=d.from();d=d.to();if(b.display.viewTo==b.display.viewFrom||
c.line>=b.display.viewTo||d.line<b.display.viewFrom)a.removeAllRanges();else{var e=bd(b,a.anchorNode,a.anchorOffset),f=bd(b,a.focusNode,a.focusOffset);if(!e||e.bad||!f||f.bad||0!=B(zc(e,f),c)||0!=B(yc(e,f),d))if(e=b.display.view,c=c.line>=b.display.viewFrom&&sg(b,c)||{node:e[0].measure.map[2],offset:0},d=d.line<b.display.viewTo&&sg(b,d),d||(d=e[e.length-1].measure,d=d.maps?d.maps[d.maps.length-1]:d.map,d={node:d[d.length-1],offset:d[d.length-2]-d[d.length-3]}),c&&d){e=a.rangeCount&&a.getRangeAt(0);
try{var g=Ob(c.node,c.offset,d.offset,d.node)}catch(h){}g&&(!La&&b.state.focused?(a.collapse(c.node,c.offset),g.collapsed||(a.removeAllRanges(),a.addRange(g))):(a.removeAllRanges(),a.addRange(g)),e&&null==a.anchorNode?a.addRange(e):La&&this.startGracePeriod());this.rememberSelection()}else a.removeAllRanges()}};O.prototype.startGracePeriod=function(){var a=this;clearTimeout(this.gracePeriod);this.gracePeriod=setTimeout(function(){a.gracePeriod=!1;a.selectionChanged()&&a.cm.operation(function(){return a.cm.curOp.selectionChanged=
!0})},20)};O.prototype.showMultipleSelections=function(a){D(this.cm.display.cursorDiv,a.cursors);D(this.cm.display.selectionDiv,a.selection)};O.prototype.rememberSelection=function(){var a=this.getSelection();this.lastAnchorNode=a.anchorNode;this.lastAnchorOffset=a.anchorOffset;this.lastFocusNode=a.focusNode;this.lastFocusOffset=a.focusOffset};O.prototype.selectionInEditor=function(){var a=this.getSelection();if(!a.rangeCount)return!1;a=a.getRangeAt(0).commonAncestorContainer;return ja(this.div,a)};
O.prototype.focus=function(){"nocursor"!=this.cm.options.readOnly&&(this.selectionInEditor()&&ka()==this.div||this.showSelection(this.prepareSelection(),!0),this.div.focus())};O.prototype.blur=function(){this.div.blur()};O.prototype.getField=function(){return this.div};O.prototype.supportsTouch=function(){return!0};O.prototype.receivedFocus=function(){function a(){d.cm.state.focused&&(d.pollSelection(),d.polling.set(d.cm.options.pollInterval,a))}var b=this,d=this;this.selectionInEditor()?setTimeout(function(){return b.pollSelection()},
20):qa(this.cm,function(){return d.cm.curOp.selectionChanged=!0});this.polling.set(this.cm.options.pollInterval,a)};O.prototype.selectionChanged=function(){var a=this.getSelection();return a.anchorNode!=this.lastAnchorNode||a.anchorOffset!=this.lastAnchorOffset||a.focusNode!=this.lastFocusNode||a.focusOffset!=this.lastFocusOffset};O.prototype.pollSelection=function(){if(null==this.readDOMTimeout&&!this.gracePeriod&&this.selectionChanged()){var a=this.getSelection(),b=this.cm;if(Fc&&Ec&&this.cm.display.gutterSpecs.length&&
yh(a.anchorNode))this.cm.triggerOnKeyDown({type:"keydown",keyCode:8,preventDefault:Math.abs}),this.blur(),this.focus();else if(!this.composing){this.rememberSelection();var d=bd(b,a.anchorNode,a.anchorOffset),c=bd(b,a.focusNode,a.focusOffset);d&&c&&qa(b,function(){da(b.doc,Na(d,c),Ha);if(d.bad||c.bad)b.curOp.selectionChanged=!0})}}};O.prototype.pollContent=function(){null!=this.readDOMTimeout&&(clearTimeout(this.readDOMTimeout),this.readDOMTimeout=null);var a=this.cm,b=a.display,d=a.doc.sel.primary(),
c=d.from(),e=d.to();0==c.ch&&c.line>a.firstLine()&&(c=t(c.line-1,w(a.doc,c.line-1).length));e.ch==w(a.doc,e.line).text.length&&e.line<a.lastLine()&&(e=t(e.line+1,0));if(c.line<b.viewFrom||e.line>b.viewTo-1)return!1;var f;c.line==b.viewFrom||0==(f=bb(a,c.line))?(d=N(b.view[0].line),f=b.view[0].node):(d=N(b.view[f].line),f=b.view[f-1].node.nextSibling);var g=bb(a,e.line);g==b.view.length-1?(e=b.viewTo-1,b=b.lineDiv.lastChild):(e=N(b.view[g+1].line)-1,b=b.view[g+1].node.previousSibling);if(!f)return!1;
b=a.doc.splitLines(zh(a,f,b,d,e));for(f=Za(a.doc,t(d,0),t(e,w(a.doc,e).text.length));1<b.length&&1<f.length;)if(J(b)==J(f))b.pop(),f.pop(),e--;else if(b[0]==f[0])b.shift(),f.shift(),d++;else break;var h=0;g=0;for(var k=b[0],l=f[0],m=Math.min(k.length,l.length);h<m&&k.charCodeAt(h)==l.charCodeAt(h);)++h;k=J(b);l=J(f);for(m=Math.min(k.length-(1==b.length?h:0),l.length-(1==f.length?h:0));g<m&&k.charCodeAt(k.length-g-1)==l.charCodeAt(l.length-g-1);)++g;if(1==b.length&&1==f.length&&d==c.line)for(;h&&h>
c.ch&&k.charCodeAt(k.length-g-1)==l.charCodeAt(l.length-g-1);)h--,g++;b[b.length-1]=k.slice(0,k.length-g).replace(/^\u200b+/,"");b[0]=b[0].slice(h).replace(/\u200b+$/,"");c=t(d,h);d=t(e,f.length?J(f).length-g:0);if(1<b.length||b[0]||B(c,d))return Bb(a.doc,b,c,d,"+input"),!0};O.prototype.ensurePolled=function(){this.forceCompositionEnd()};O.prototype.reset=function(){this.forceCompositionEnd()};O.prototype.forceCompositionEnd=function(){this.composing&&(clearTimeout(this.readDOMTimeout),this.composing=
null,this.updateFromDOM(),this.div.blur(),this.div.focus())};O.prototype.readFromDOMSoon=function(){var a=this;null==this.readDOMTimeout&&(this.readDOMTimeout=setTimeout(function(){a.readDOMTimeout=null;if(a.composing)if(a.composing.done)a.composing=null;else return;a.updateFromDOM()},80))};O.prototype.updateFromDOM=function(){var a=this;!this.cm.isReadOnly()&&this.pollContent()||qa(this.cm,function(){return ma(a.cm)})};O.prototype.setUneditable=function(a){a.contentEditable="false"};O.prototype.onKeyPress=
function(a){0==a.charCode||this.composing||(a.preventDefault(),this.cm.isReadOnly()||ba(this.cm,le)(this.cm,String.fromCharCode(null==a.charCode?a.keyCode:a.charCode),0))};O.prototype.readOnlyChanged=function(a){this.div.contentEditable=String("nocursor"!=a)};O.prototype.onContextMenu=function(){};O.prototype.resetPosition=function(){};O.prototype.needsContentAttribute=!0;var V=function(a){this.cm=a;this.prevInput="";this.pollingFast=!1;this.polling=new Va;this.hasSelection=!1;this.composing=null};
V.prototype.init=function(a){function b(g){if(!Z(e,g)){if(e.somethingSelected())ra={lineWise:!1,text:e.getSelections()};else if(e.options.lineWiseCopyCut){var h=og(e);ra={lineWise:!0,text:h.text};"cut"==g.type?e.setSelections(h.ranges,null,Ha):(c.prevInput="",f.value=h.text.join("\n"),nc(f))}else return;"cut"==g.type&&(e.state.cutIncoming=+new Date)}}var d=this,c=this,e=this.cm;this.createField(a);var f=this.textarea;a.wrapper.insertBefore(this.wrapper,a.wrapper.firstChild);mc&&(f.style.width="0px");
z(f,"input",function(){G&&9<=T&&d.hasSelection&&(d.hasSelection=null);c.poll()});z(f,"paste",function(g){Z(e,g)||ng(g,e)||(e.state.pasteIncoming=+new Date,c.fastPoll())});z(f,"cut",b);z(f,"copy",b);z(a.scroller,"paste",function(g){if(!Ka(a,g)&&!Z(e,g))if(f.dispatchEvent){var h=new Event("paste");h.clipboardData=g.clipboardData;f.dispatchEvent(h)}else e.state.pasteIncoming=+new Date,c.focus()});z(a.lineSpace,"selectstart",function(g){Ka(a,g)||la(g)});z(f,"compositionstart",function(){var g=e.getCursor("from");
c.composing&&c.composing.range.clear();c.composing={start:g,range:e.markText(g,e.getCursor("to"),{className:"CodeMirror-composing"})}});z(f,"compositionend",function(){c.composing&&(c.poll(),c.composing.range.clear(),c.composing=null)})};V.prototype.createField=function(a){this.wrapper=qg();this.textarea=this.wrapper.firstChild};V.prototype.screenReaderLabelChanged=function(a){a?this.textarea.setAttribute("aria-label",a):this.textarea.removeAttribute("aria-label")};V.prototype.prepareSelection=function(){var a=
this.cm,b=a.display,d=a.doc,c=ff(a);if(a.options.moveInputWithCursor){a=za(a,d.sel.primary().head,"div");d=b.wrapper.getBoundingClientRect();var e=b.lineDiv.getBoundingClientRect();c.teTop=Math.max(0,Math.min(b.wrapper.clientHeight-10,a.top+e.top-d.top));c.teLeft=Math.max(0,Math.min(b.wrapper.clientWidth-10,a.left+e.left-d.left))}return c};V.prototype.showSelection=function(a){var b=this.cm.display;D(b.cursorDiv,a.cursors);D(b.selectionDiv,a.selection);null!=a.teTop&&(this.wrapper.style.top=a.teTop+
"px",this.wrapper.style.left=a.teLeft+"px")};V.prototype.reset=function(a){if(!this.contextMenuPending&&!this.composing){var b=this.cm;b.somethingSelected()?(this.prevInput="",a=b.getSelection(),this.textarea.value=a,b.state.focused&&nc(this.textarea),G&&9<=T&&(this.hasSelection=a)):a||(this.prevInput=this.textarea.value="",G&&9<=T&&(this.hasSelection=null))}};V.prototype.getField=function(){return this.textarea};V.prototype.supportsTouch=function(){return!1};V.prototype.focus=function(){if("nocursor"!=
this.cm.options.readOnly&&(!Zb||ka()!=this.textarea))try{this.textarea.focus()}catch(a){}};V.prototype.blur=function(){this.textarea.blur()};V.prototype.resetPosition=function(){this.wrapper.style.top=this.wrapper.style.left=0};V.prototype.receivedFocus=function(){this.slowPoll()};V.prototype.slowPoll=function(){var a=this;this.pollingFast||this.polling.set(this.cm.options.pollInterval,function(){a.poll();a.cm.state.focused&&a.slowPoll()})};V.prototype.fastPoll=function(){function a(){d.poll()||b?
(d.pollingFast=!1,d.slowPoll()):(b=!0,d.polling.set(60,a))}var b=!1,d=this;d.pollingFast=!0;d.polling.set(20,a)};V.prototype.poll=function(){var a=this,b=this.cm,d=this.textarea,c=this.prevInput;if(this.contextMenuPending||!b.state.focused||Eh(d)&&!c&&!this.composing||b.isReadOnly()||b.options.disableInput||b.state.keySeq)return!1;var e=d.value;if(e==c&&!b.somethingSelected())return!1;if(G&&9<=T&&this.hasSelection===e||xa&&/[\uf700-\uf7ff]/.test(e))return b.display.input.reset(),!1;if(b.doc.sel==
b.display.selForContextMenu){var f=e.charCodeAt(0);8203!=f||c||(c="\u200b");if(8666==f)return this.reset(),this.cm.execCommand("undo")}var g=0;for(f=Math.min(c.length,e.length);g<f&&c.charCodeAt(g)==e.charCodeAt(g);)++g;qa(b,function(){le(b,e.slice(g),c.length-g,null,a.composing?"*compose":null);1E3<e.length||-1<e.indexOf("\n")?d.value=a.prevInput="":a.prevInput=e;a.composing&&(a.composing.range.clear(),a.composing.range=b.markText(a.composing.start,b.getCursor("to"),{className:"CodeMirror-composing"}))});
return!0};V.prototype.ensurePolled=function(){this.pollingFast&&this.poll()&&(this.pollingFast=!1)};V.prototype.onKeyPress=function(){G&&9<=T&&(this.hasSelection=null);this.fastPoll()};V.prototype.onContextMenu=function(a){function b(){if(null!=g.selectionStart){var q=e.somethingSelected(),r="\u200b"+(q?g.value:"");g.value="\u21da";g.value=r;c.prevInput=q?"":"\u200b";g.selectionStart=1;g.selectionEnd=r.length;f.selForContextMenu=e.doc.sel}}function d(){if(c.contextMenuPending==d&&(c.contextMenuPending=
!1,c.wrapper.style.cssText=m,g.style.cssText=l,G&&9>T&&f.scrollbars.setScrollTop(f.scroller.scrollTop=k),null!=g.selectionStart)){(!G||G&&9>T)&&b();var q=0,r=function(){f.selForContextMenu==e.doc.sel&&0==g.selectionStart&&0<g.selectionEnd&&"\u200b"==c.prevInput?ba(e,Jf)(e):10>q++?f.detectingSelectAll=setTimeout(r,500):(f.selForContextMenu=null,f.input.reset())};f.detectingSelectAll=setTimeout(r,200)}}var c=this,e=c.cm,f=e.display,g=c.textarea;c.contextMenuPending&&c.contextMenuPending();var h=eb(e,
a),k=f.scroller.scrollTop;if(h&&!Aa){e.options.resetSelectionOnContextMenu&&-1==e.doc.sel.contains(h)&&ba(e,da)(e.doc,Na(h),Ha);var l=g.style.cssText,m=c.wrapper.style.cssText;h=c.wrapper.offsetParent.getBoundingClientRect();c.wrapper.style.cssText="position: static";g.style.cssText="position: absolute; width: 30px; height: 30px;\n      top: "+(a.clientY-h.top-5)+"px; left: "+(a.clientX-h.left-5)+"px;\n      z-index: 1000; background: "+(G?"rgba(255, 255, 255, .05)":"transparent")+";\n      outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";
if(fa)var n=window.scrollY;f.input.focus();fa&&window.scrollTo(null,n);f.input.reset();e.somethingSelected()||(g.value=c.prevInput=" ");c.contextMenuPending=d;f.selForContextMenu=e.doc.sel;clearTimeout(f.detectingSelectAll);G&&9<=T&&b();if(ie){Kb(a);var p=function(){sa(window,"mouseup",p);setTimeout(d,20)};z(window,"mouseup",p)}else setTimeout(d,50)}};V.prototype.readOnlyChanged=function(a){a||this.reset();this.textarea.disabled="nocursor"==a;this.textarea.readOnly=!!a};V.prototype.setUneditable=
function(){};V.prototype.needsContentAttribute=!1;(function(a){function b(c,e,f,g){a.defaults[c]=e;f&&(d[c]=g?function(h,k,l){l!=Fb&&f(h,k,l)}:f)}var d=a.optionHandlers;a.defineOption=b;a.Init=Fb;b("value","",function(c,e){return c.setValue(e)},!0);b("mode",null,function(c,e){c.doc.modeOption=e;Zd(c)},!0);b("indentUnit",2,Zd,!0);b("indentWithTabs",!1);b("smartIndent",!0);b("tabSize",4,function(c){$b(c);Sb(c);ma(c)},!0);b("lineSeparator",null,function(c,e){if(c.doc.lineSep=e){var f=[],g=c.doc.first;
c.doc.iter(function(k){for(var l=0;;){var m=k.text.indexOf(e,l);if(-1==m)break;l=m+e.length;f.push(t(g,m))}g++});for(var h=f.length-1;0<=h;h--)Bb(c.doc,e,f[h],t(f[h].line,f[h].ch+e.length))}});b("specialChars",/[\u0000-\u001f\u007f-\u009f\u00ad\u061c\u200b\u200e\u200f\u2028\u2029\ufeff\ufff9-\ufffc]/g,function(c,e,f){c.state.specialChars=new RegExp(e.source+(e.test("\t")?"":"|\t"),"g");f!=Fb&&c.refresh()});b("specialCharPlaceholder",Kg,function(c){return c.refresh()},!0);b("electricChars",!0);b("inputStyle",
Zb?"contenteditable":"textarea",function(){throw Error("inputStyle can not (yet) be changed in a running editor");},!0);b("spellcheck",!1,function(c,e){return c.getInputField().spellcheck=e},!0);b("autocorrect",!1,function(c,e){return c.getInputField().autocorrect=e},!0);b("autocapitalize",!1,function(c,e){return c.getInputField().autocapitalize=e},!0);b("rtlMoveVisually",!Dh);b("wholeLineUpdateBefore",!0);b("theme","default",function(c){jg(c);Yb(c)},!0);b("keyMap","default",function(c,e,f){e=Wc(e);
(f=f!=Fb&&Wc(f))&&f.detach&&f.detach(c,e);e.attach&&e.attach(c,f||null)});b("extraKeys",null);b("configureMouse",null);b("lineWrapping",!1,wh,!0);b("gutters",[],function(c,e){c.display.gutterSpecs=Xd(e,c.options.lineNumbers);Yb(c)},!0);b("fixedGutter",!0,function(c,e){c.display.gutters.style.left=e?Ld(c.display)+"px":"0";c.refresh()},!0);b("coverGutterNextToScrollbar",!1,function(c){return wb(c)},!0);b("scrollbarStyle","native",function(c){nf(c);wb(c);c.display.scrollbars.setScrollTop(c.doc.scrollTop);
c.display.scrollbars.setScrollLeft(c.doc.scrollLeft)},!0);b("lineNumbers",!1,function(c,e){c.display.gutterSpecs=Xd(c.options.gutters,e);Yb(c)},!0);b("firstLineNumber",1,Yb,!0);b("lineNumberFormatter",function(c){return c},Yb,!0);b("showCursorWhenSelecting",!1,Tb,!0);b("resetSelectionOnContextMenu",!0);b("lineWiseCopyCut",!0);b("pasteLinesPerSelection",!0);b("selectionsMayTouch",!1);b("readOnly",!1,function(c,e){"nocursor"==e&&(ub(c),c.display.input.blur());c.display.input.readOnlyChanged(e)});b("screenReaderLabel",
null,function(c,e){c.display.input.screenReaderLabelChanged(""===e?null:e)});b("disableInput",!1,function(c,e){e||c.display.input.reset()},!0);b("dragDrop",!0,vh);b("allowDropFileTypes",null);b("cursorBlinkRate",530);b("cursorScrollMargin",0);b("cursorHeight",1,Tb,!0);b("singleCursorHeightPerLine",!0,Tb,!0);b("workTime",100);b("workDelay",100);b("flattenSpans",!0,$b,!0);b("addModeClass",!1,$b,!0);b("pollInterval",100);b("undoDepth",200,function(c,e){return c.doc.history.undoDepth=e});b("historyEventDelay",
1250);b("viewportMargin",10,function(c){return c.refresh()},!0);b("maxHighlightLength",1E4,$b,!0);b("moveInputWithCursor",!0,function(c,e){e||c.display.input.resetPosition()});b("tabindex",null,function(c,e){return c.display.input.getField().tabIndex=e||""});b("autofocus",null);b("direction","ltr",function(c,e){return c.doc.setDirection(e)},!0);b("phrases",null)})(U);(function(a){var b=a.optionHandlers,d=a.helpers={};a.prototype={constructor:a,focus:function(){window.focus();this.display.input.focus()},
setOption:function(c,e){var f=this.options,g=f[c];if(f[c]!=e||"mode"==c)f[c]=e,b.hasOwnProperty(c)&&ba(this,b[c])(this,e,g),W(this,"optionChange",this,c)},getOption:function(c){return this.options[c]},getDoc:function(){return this.doc},addKeyMap:function(c,e){this.state.keyMaps[e?"push":"unshift"](Wc(c))},removeKeyMap:function(c){for(var e=this.state.keyMaps,f=0;f<e.length;++f)if(e[f]==c||e[f].name==c)return e.splice(f,1),!0},addOverlay:ia(function(c,e){var f=c.token?c:a.getMode(this.options,c);if(f.startState)throw Error("Overlays may not be stateful.");
wg(this.state.overlays,{mode:f,modeSpec:c,opaque:e&&e.opaque,priority:e&&e.priority||0},function(g){return g.priority});this.state.modeGen++;ma(this)}),removeOverlay:ia(function(c){for(var e=this.state.overlays,f=0;f<e.length;++f){var g=e[f].modeSpec;if(g==c||"string"==typeof c&&g.name==c){e.splice(f,1);this.state.modeGen++;ma(this);break}}}),indentLine:ia(function(c,e,f){"string"!=typeof e&&"number"!=typeof e&&(e=null==e?this.options.smartIndent?"smart":"prev":e?"add":"subtract");Lb(this.doc,c)&&
lc(this,c,e,f)}),indentSelection:ia(function(c){for(var e=this.doc.sel.ranges,f=-1,g=0;g<e.length;g++){var h=e[g];if(h.empty())h.head.line>f&&(lc(this,h.head.line,c,!0),f=h.head.line,g==this.doc.sel.primIndex&&vb(this));else{var k=h.from();h=h.to();var l=Math.max(f,k.line);f=Math.min(this.lastLine(),h.line-(h.ch?0:1))+1;for(h=l;h<f;++h)lc(this,h,c);h=this.doc.sel.ranges;0==k.ch&&e.length==h.length&&0<h[g].from().ch&&ce(this.doc,g,new I(k,h[g].to()),Ha)}}}),getTokenAt:function(c,e){return Be(this,
c,e)},getLineTokens:function(c,e){return Be(this,t(c),e,!0)},getTokenTypeAt:function(c){c=C(this.doc,c);var e=ze(this,w(this.doc,c.line)),f=0,g=(e.length-1)/2;c=c.ch;if(0==c)e=e[2];else for(;;){var h=f+g>>1;if((h?e[2*h-1]:0)>=c)g=h;else if(e[2*h+1]<c)f=h+1;else{e=e[2*h+2];break}}f=e?e.indexOf("overlay "):-1;return 0>f?e:0==f?null:e.slice(0,f-1)},getModeAt:function(c){var e=this.doc.mode;return e.innerMode?a.innerMode(e,this.getTokenAt(c).state).mode:e},getHelper:function(c,e){return this.getHelpers(c,
e)[0]},getHelpers:function(c,e){var f=[];if(!d.hasOwnProperty(e))return f;var g=d[e];c=this.getModeAt(c);if("string"==typeof c[e])g[c[e]]&&f.push(g[c[e]]);else if(c[e])for(var h=0;h<c[e].length;h++){var k=g[c[e][h]];k&&f.push(k)}else c.helperType&&g[c.helperType]?f.push(g[c.helperType]):g[c.name]&&f.push(g[c.name]);for(e=0;e<g._global.length;e++)h=g._global[e],h.pred(c,this)&&-1==ea(f,h.val)&&f.push(h.val);return f},getStateAfter:function(c,e){var f=this.doc;c=Math.max(f.first,Math.min(null==c?f.first+
f.size-1:c,f.first+f.size-1));return Mb(this,c+1,e).state},cursorCoords:function(c,e){var f=this.doc.sel.primary();c=null==c?f.head:"object"==typeof c?C(this.doc,c):c?f.from():f.to();return za(this,c,e||"page")},charCoords:function(c,e){return Hc(this,C(this.doc,c),e||"page")},coordsChar:function(c,e){c=$e(this,c,e||"page");return Jd(this,c.left,c.top)},lineAtHeight:function(c,e){c=$e(this,{top:c,left:0},e||"page").top;return $a(this.doc,c+this.display.viewOffset)},heightAtLine:function(c,e,f){var g=
!1;if("number"==typeof c){var h=this.doc.first+this.doc.size-1;c<this.doc.first?c=this.doc.first:c>h&&(c=h,g=!0);c=w(this.doc,c)}return Gc(this,c,{top:0,left:0},e||"page",f||g).top+(g?this.doc.height-Fa(c):0)},defaultTextHeight:function(){return tb(this.display)},defaultCharWidth:function(){return sb(this.display)},getViewport:function(){return{from:this.display.viewFrom,to:this.display.viewTo}},addWidget:function(c,e,f,g,h){var k=this.display;c=za(this,C(this.doc,c));var l=c.bottom,m=c.left;e.style.position=
"absolute";e.setAttribute("cm-ignore-events","true");this.display.input.setUneditable(e);k.sizer.appendChild(e);if("over"==g)l=c.top;else if("above"==g||"near"==g){var n=Math.max(k.wrapper.clientHeight,this.doc.height),p=Math.max(k.sizer.clientWidth,k.lineSpace.clientWidth);("above"==g||c.bottom+e.offsetHeight>n)&&c.top>e.offsetHeight?l=c.top-e.offsetHeight:c.bottom+e.offsetHeight<=n&&(l=c.bottom);m+e.offsetWidth>p&&(m=p-e.offsetWidth)}e.style.top=l+"px";e.style.left=e.style.right="";"right"==h?(m=
k.sizer.clientWidth-e.offsetWidth,e.style.right="0px"):("left"==h?m=0:"middle"==h&&(m=(k.sizer.clientWidth-e.offsetWidth)/2),e.style.left=m+"px");f&&(c=Sd(this,{left:m,top:l,right:m+e.offsetWidth,bottom:l+e.offsetHeight}),null!=c.scrollTop&&Vb(this,c.scrollTop),null!=c.scrollLeft&&ib(this,c.scrollLeft))},triggerOnKeyDown:ia(dg),triggerOnKeyPress:ia(fg),triggerOnKeyUp:eg,triggerOnMouseDown:ia(gg),execCommand:function(c){if(hc.hasOwnProperty(c))return hc[c].call(null,this)},triggerElectric:ia(function(c){mg(this,
c)}),findPosH:function(c,e,f,g){var h=1;0>e&&(h=-1,e=-e);c=C(this.doc,c);for(var k=0;k<e&&(c=ne(this.doc,c,h,f,g),!c.hitSide);++k);return c},moveH:ia(function(c,e){var f=this;this.extendSelectionsBy(function(g){return f.display.shift||f.doc.extend||g.empty()?ne(f.doc,g.head,c,e,f.options.rtlMoveVisually):0>c?g.from():g.to()},oc)}),deleteH:ia(function(c,e){var f=this.doc;this.doc.sel.somethingSelected()?f.replaceSelection("",null,"+delete"):Eb(this,function(g){var h=ne(f,g.head,c,e,!1);return 0>c?
{from:h,to:g.head}:{from:g.head,to:h}})}),findPosV:function(c,e,f,g){var h=1;0>e&&(h=-1,e=-e);var k=C(this.doc,c);for(c=0;c<e&&(k=za(this,k,"div"),null==g?g=k.left:k.left=g,k=rg(this,k,h,f),!k.hitSide);++c);return k},moveV:ia(function(c,e){var f=this,g=this.doc,h=[],k=!this.display.shift&&!g.extend&&g.sel.somethingSelected();g.extendSelectionsBy(function(m){if(k)return 0>c?m.from():m.to();var n=za(f,m.head,"div");null!=m.goalColumn&&(n.left=m.goalColumn);h.push(n.left);var p=rg(f,n,c,e);"page"==e&&
m==g.sel.primary()&&Mc(f,Hc(f,p,"div").top-n.top);return p},oc);if(h.length)for(var l=0;l<g.sel.ranges.length;l++)g.sel.ranges[l].goalColumn=h[l]}),findWordAt:function(c){var e=w(this.doc,c.line).text,f=c.ch,g=c.ch;if(e){var h=this.getHelper(c,"wordChars");"before"!=c.sticky&&g!=e.length||!f?++g:--f;var k=e.charAt(f);for(k=vc(k,h)?function(l){return vc(l,h)}:/\s/.test(k)?function(l){return/\s/.test(l)}:function(l){return!/\s/.test(l)&&!vc(l)};0<f&&k(e.charAt(f-1));)--f;for(;g<e.length&&k(e.charAt(g));)++g}return new I(t(c.line,
f),t(c.line,g))},toggleOverwrite:function(c){if(null==c||c!=this.state.overwrite)(this.state.overwrite=!this.state.overwrite)?Wa(this.display.cursorDiv,"CodeMirror-overwrite"):hb(this.display.cursorDiv,"CodeMirror-overwrite"),W(this,"overwriteToggle",this,this.state.overwrite)},hasFocus:function(){return this.display.input.getField()==ka()},isReadOnly:function(){return!(!this.options.readOnly&&!this.doc.cantEdit)},scrollTo:ia(function(c,e){Ub(this,c,e)}),getScrollInfo:function(){var c=this.display.scroller;
return{left:c.scrollLeft,top:c.scrollTop,height:c.scrollHeight-Ga(this)-this.display.barHeight,width:c.scrollWidth-Ga(this)-this.display.barWidth,clientHeight:Dd(this),clientWidth:ab(this)}},scrollIntoView:ia(function(c,e){null==c?(c={from:this.doc.sel.primary().head,to:null},null==e&&(e=this.options.cursorScrollMargin)):"number"==typeof c?c={from:t(c,0),to:null}:null==c.from&&(c={from:c,to:null});c.to||(c.to=c.from);c.margin=e||0;null!=c.from.line?(Nc(this),this.curOp.scrollToPos=c):jf(this,c.from,
c.to,c.margin)}),setSize:ia(function(c,e){var f=this,g=function(k){return"number"==typeof k||/^\d+$/.test(String(k))?k+"px":k};null!=c&&(this.display.wrapper.style.width=g(c));null!=e&&(this.display.wrapper.style.height=g(e));this.options.lineWrapping&&Xe(this);var h=this.display.viewFrom;this.doc.iter(h,this.display.viewTo,function(k){if(k.widgets)for(var l=0;l<k.widgets.length;l++)if(k.widgets[l].noHScroll){Qa(f,h,"widget");break}++h});this.curOp.forceUpdate=!0;W(this,"refresh",this)}),operation:function(c){return qa(this,
c)},startOperation:function(){return jb(this)},endOperation:function(){return kb(this)},refresh:ia(function(){var c=this.display.cachedTextHeight;ma(this);this.curOp.forceUpdate=!0;Sb(this);Ub(this,this.doc.scrollLeft,this.doc.scrollTop);Wd(this.display);(null==c||.5<Math.abs(c-tb(this.display))||this.options.lineWrapping)&&Md(this);W(this,"refresh",this)}),swapDoc:ia(function(c){var e=this.doc;e.cm=null;this.state.selectingText&&this.state.selectingText();xf(this,c);Sb(this);this.display.input.reset();
Ub(this,c.scrollLeft,c.scrollTop);this.curOp.forceScroll=!0;aa(this,"swapDoc",this,e);return e}),phrase:function(c){var e=this.options.phrases;return e&&Object.prototype.hasOwnProperty.call(e,c)?e[c]:c},getInputField:function(){return this.display.input.getField()},getWrapperElement:function(){return this.display.wrapper},getScrollerElement:function(){return this.display.scroller},getGutterElement:function(){return this.display.gutters}};nb(a);a.registerHelper=function(c,e,f){d.hasOwnProperty(c)||
(d[c]=a[c]={_global:[]});d[c][e]=f};a.registerGlobalHelper=function(c,e,f,g){a.registerHelper(c,e,g);d[c]._global.push({pred:f,val:g})}})(U);var Gh="iter insert remove copy getEditor constructor".split(" "),sc;for(sc in oa.prototype)oa.prototype.hasOwnProperty(sc)&&0>ea(Gh,sc)&&(U.prototype[sc]=function(a){return function(){return a.apply(this.doc,arguments)}}(oa.prototype[sc]));nb(oa);U.inputStyles={textarea:V,contenteditable:O};U.defineMode=function(a){U.defaults.mode||"null"==a||(U.defaults.mode=
a);Bg.apply(this,arguments)};U.defineMIME=function(a,b){ob[a]=b};U.defineMode("null",function(){return{token:function(a){return a.skipToEnd()}}});U.defineMIME("text/plain","null");U.defineExtension=function(a,b){U.prototype[a]=b};U.defineDocExtension=function(a,b){oa.prototype[a]=b};U.fromTextArea=function(a,b){function d(){a.value=h.getValue()}b=b?Xa(b):{};b.value=a.value;!b.tabindex&&a.tabIndex&&(b.tabindex=a.tabIndex);!b.placeholder&&a.placeholder&&(b.placeholder=a.placeholder);if(null==b.autofocus){var c=
ka();b.autofocus=c==a||null!=a.getAttribute("autofocus")&&c==document.body}if(a.form&&(z(a.form,"submit",d),!b.leaveSubmitMethodAlone)){var e=a.form;var f=e.submit;try{var g=e.submit=function(){d();e.submit=f;e.submit();e.submit=g}}catch(k){}}b.finishInit=function(k){k.save=d;k.getTextArea=function(){return a};k.toTextArea=function(){k.toTextArea=isNaN;d();a.parentNode.removeChild(k.getWrapperElement());a.style.display="";a.form&&(sa(a.form,"submit",d),b.leaveSubmitMethodAlone||"function"!=typeof a.form.submit||
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a.keyName=Zf;a.isModifierKey=Wf;a.lookupKey=Db;a.normalizeKeyMap=hh;a.StringStream=X;a.SharedTextMarker=fc;a.TextMarker=Ta;a.LineWidget=ec;a.e_preventDefault=la;a.e_stopPropagation=te;a.e_stop=Kb;a.addClass=Wa;a.contains=ja;a.rmClass=hb;a.keyNames=Ua})(U);U.version="5.65.0";return U});

}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
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U:2*U)},electricInput:/^\s*(?:case .*?:|default:|\{|\})$/,blockCommentStart:J?null:"/*",blockCommentEnd:J?null:"*/",blockCommentContinue:J?null:" * ",lineComment:J?null:"//",fold:"brace",closeBrackets:"()[]{}''\"\"``",helperType:J?"json":"javascript",jsonldMode:fa,jsonMode:J,expressionAllowed:Aa,skipExpression:function(a){Ea(a,"atom","atom","true",new v.StringStream("",2,null))}}});v.registerHelper("wordChars","javascript",/[\w$]/);v.defineMIME("text/javascript","javascript");v.defineMIME("text/ecmascript",
"javascript");v.defineMIME("application/javascript","javascript");v.defineMIME("application/x-javascript","javascript");v.defineMIME("application/ecmascript","javascript");v.defineMIME("application/json",{name:"javascript",json:!0});v.defineMIME("application/x-json",{name:"javascript",json:!0});v.defineMIME("application/manifest+json",{name:"javascript",json:!0});v.defineMIME("application/ld+json",{name:"javascript",jsonld:!0});v.defineMIME("text/typescript",{name:"javascript",typescript:!0});v.defineMIME("application/typescript",
{name:"javascript",typescript:!0})});

},{"../../lib/codemirror":51}],53:[function(require,module,exports){

/**
 * Expose `Emitter`.
 */

if (typeof module !== 'undefined') {
  module.exports = Emitter;
}

/**
 * Initialize a new `Emitter`.
 *
 * @api public
 */

function Emitter(obj) {
  if (obj) return mixin(obj);
};

/**
 * Mixin the emitter properties.
 *
 * @param {Object} obj
 * @return {Object}
 * @api private
 */

function mixin(obj) {
  for (var key in Emitter.prototype) {
    obj[key] = Emitter.prototype[key];
  }
  return obj;
}

/**
 * Listen on the given `event` with `fn`.
 *
 * @param {String} event
 * @param {Function} fn
 * @return {Emitter}
 * @api public
 */

Emitter.prototype.on =
Emitter.prototype.addEventListener = function(event, fn){
  this._callbacks = this._callbacks || {};
  (this._callbacks['$' + event] = this._callbacks['$' + event] || [])
    .push(fn);
  return this;
};

/**
 * Adds an `event` listener that will be invoked a single
 * time then automatically removed.
 *
 * @param {String} event
 * @param {Function} fn
 * @return {Emitter}
 * @api public
 */

Emitter.prototype.once = function(event, fn){
  function on() {
    this.off(event, on);
    fn.apply(this, arguments);
  }

  on.fn = fn;
  this.on(event, on);
  return this;
};

/**
 * Remove the given callback for `event` or all
 * registered callbacks.
 *
 * @param {String} event
 * @param {Function} fn
 * @return {Emitter}
 * @api public
 */

Emitter.prototype.off =
Emitter.prototype.removeListener =
Emitter.prototype.removeAllListeners =
Emitter.prototype.removeEventListener = function(event, fn){
  this._callbacks = this._callbacks || {};

  // all
  if (0 == arguments.length) {
    this._callbacks = {};
    return this;
  }

  // specific event
  var callbacks = this._callbacks['$' + event];
  if (!callbacks) return this;

  // remove all handlers
  if (1 == arguments.length) {
    delete this._callbacks['$' + event];
    return this;
  }

  // remove specific handler
  var cb;
  for (var i = 0; i < callbacks.length; i++) {
    cb = callbacks[i];
    if (cb === fn || cb.fn === fn) {
      callbacks.splice(i, 1);
      break;
    }
  }

  // Remove event specific arrays for event types that no
  // one is subscribed for to avoid memory leak.
  if (callbacks.length === 0) {
    delete this._callbacks['$' + event];
  }

  return this;
};

/**
 * Emit `event` with the given args.
 *
 * @param {String} event
 * @param {Mixed} ...
 * @return {Emitter}
 */

Emitter.prototype.emit = function(event){
  this._callbacks = this._callbacks || {};

  var args = new Array(arguments.length - 1)
    , callbacks = this._callbacks['$' + event];

  for (var i = 1; i < arguments.length; i++) {
    args[i - 1] = arguments[i];
  }

  if (callbacks) {
    callbacks = callbacks.slice(0);
    for (var i = 0, len = callbacks.length; i < len; ++i) {
      callbacks[i].apply(this, args);
    }
  }

  return this;
};

/**
 * Return array of callbacks for `event`.
 *
 * @param {String} event
 * @return {Array}
 * @api public
 */

Emitter.prototype.listeners = function(event){
  this._callbacks = this._callbacks || {};
  return this._callbacks['$' + event] || [];
};

/**
 * Check if this emitter has `event` handlers.
 *
 * @param {String} event
 * @return {Boolean}
 * @api public
 */

Emitter.prototype.hasListeners = function(event){
  return !! this.listeners(event).length;
};

},{}],54:[function(require,module,exports){
/**
 * Helpers.
 */

var s = 1000;
var m = s * 60;
var h = m * 60;
var d = h * 24;
var w = d * 7;
var y = d * 365.25;

/**
 * Parse or format the given `val`.
 *
 * Options:
 *
 *  - `long` verbose formatting [false]
 *
 * @param {String|Number} val
 * @param {Object} [options]
 * @throws {Error} throw an error if val is not a non-empty string or a number
 * @return {String|Number}
 * @api public
 */

module.exports = function(val, options) {
  options = options || {};
  var type = typeof val;
  if (type === 'string' && val.length > 0) {
    return parse(val);
  } else if (type === 'number' && isFinite(val)) {
    return options.long ? fmtLong(val) : fmtShort(val);
  }
  throw new Error(
    'val is not a non-empty string or a valid number. val=' +
      JSON.stringify(val)
  );
};

/**
 * Parse the given `str` and return milliseconds.
 *
 * @param {String} str
 * @return {Number}
 * @api private
 */

function parse(str) {
  str = String(str);
  if (str.length > 100) {
    return;
  }
  var match = /^(-?(?:\d+)?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|years?|yrs?|y)?$/i.exec(
    str
  );
  if (!match) {
    return;
  }
  var n = parseFloat(match[1]);
  var type = (match[2] || 'ms').toLowerCase();
  switch (type) {
    case 'years':
    case 'year':
    case 'yrs':
    case 'yr':
    case 'y':
      return n * y;
    case 'weeks':
    case 'week':
    case 'w':
      return n * w;
    case 'days':
    case 'day':
    case 'd':
      return n * d;
    case 'hours':
    case 'hour':
    case 'hrs':
    case 'hr':
    case 'h':
      return n * h;
    case 'minutes':
    case 'minute':
    case 'mins':
    case 'min':
    case 'm':
      return n * m;
    case 'seconds':
    case 'second':
    case 'secs':
    case 'sec':
    case 's':
      return n * s;
    case 'milliseconds':
    case 'millisecond':
    case 'msecs':
    case 'msec':
    case 'ms':
      return n;
    default:
      return undefined;
  }
}

/**
 * Short format for `ms`.
 *
 * @param {Number} ms
 * @return {String}
 * @api private
 */

function fmtShort(ms) {
  var msAbs = Math.abs(ms);
  if (msAbs >= d) {
    return Math.round(ms / d) + 'd';
  }
  if (msAbs >= h) {
    return Math.round(ms / h) + 'h';
  }
  if (msAbs >= m) {
    return Math.round(ms / m) + 'm';
  }
  if (msAbs >= s) {
    return Math.round(ms / s) + 's';
  }
  return ms + 'ms';
}

/**
 * Long format for `ms`.
 *
 * @param {Number} ms
 * @return {String}
 * @api private
 */

function fmtLong(ms) {
  var msAbs = Math.abs(ms);
  if (msAbs >= d) {
    return plural(ms, msAbs, d, 'day');
  }
  if (msAbs >= h) {
    return plural(ms, msAbs, h, 'hour');
  }
  if (msAbs >= m) {
    return plural(ms, msAbs, m, 'minute');
  }
  if (msAbs >= s) {
    return plural(ms, msAbs, s, 'second');
  }
  return ms + ' ms';
}

/**
 * Pluralization helper.
 */

function plural(ms, msAbs, n, name) {
  var isPlural = msAbs >= n * 1.5;
  return Math.round(ms / n) + ' ' + name + (isPlural ? 's' : '');
}

},{}],55:[function(require,module,exports){
(function (process){(function (){
/* eslint-env browser */

/**
 * This is the web browser implementation of `debug()`.
 */

exports.formatArgs = formatArgs;
exports.save = save;
exports.load = load;
exports.useColors = useColors;
exports.storage = localstorage();
exports.destroy = (() => {
	let warned = false;

	return () => {
		if (!warned) {
			warned = true;
			console.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');
		}
	};
})();

/**
 * Colors.
 */

exports.colors = [
	'#0000CC',
	'#0000FF',
	'#0033CC',
	'#0033FF',
	'#0066CC',
	'#0066FF',
	'#0099CC',
	'#0099FF',
	'#00CC00',
	'#00CC33',
	'#00CC66',
	'#00CC99',
	'#00CCCC',
	'#00CCFF',
	'#3300CC',
	'#3300FF',
	'#3333CC',
	'#3333FF',
	'#3366CC',
	'#3366FF',
	'#3399CC',
	'#3399FF',
	'#33CC00',
	'#33CC33',
	'#33CC66',
	'#33CC99',
	'#33CCCC',
	'#33CCFF',
	'#6600CC',
	'#6600FF',
	'#6633CC',
	'#6633FF',
	'#66CC00',
	'#66CC33',
	'#9900CC',
	'#9900FF',
	'#9933CC',
	'#9933FF',
	'#99CC00',
	'#99CC33',
	'#CC0000',
	'#CC0033',
	'#CC0066',
	'#CC0099',
	'#CC00CC',
	'#CC00FF',
	'#CC3300',
	'#CC3333',
	'#CC3366',
	'#CC3399',
	'#CC33CC',
	'#CC33FF',
	'#CC6600',
	'#CC6633',
	'#CC9900',
	'#CC9933',
	'#CCCC00',
	'#CCCC33',
	'#FF0000',
	'#FF0033',
	'#FF0066',
	'#FF0099',
	'#FF00CC',
	'#FF00FF',
	'#FF3300',
	'#FF3333',
	'#FF3366',
	'#FF3399',
	'#FF33CC',
	'#FF33FF',
	'#FF6600',
	'#FF6633',
	'#FF9900',
	'#FF9933',
	'#FFCC00',
	'#FFCC33'
];

/**
 * Currently only WebKit-based Web Inspectors, Firefox >= v31,
 * and the Firebug extension (any Firefox version) are known
 * to support "%c" CSS customizations.
 *
 * TODO: add a `localStorage` variable to explicitly enable/disable colors
 */

// eslint-disable-next-line complexity
function useColors() {
	// NB: In an Electron preload script, document will be defined but not fully
	// initialized. Since we know we're in Chrome, we'll just detect this case
	// explicitly
	if (typeof window !== 'undefined' && window.process && (window.process.type === 'renderer' || window.process.__nwjs)) {
		return true;
	}

	// Internet Explorer and Edge do not support colors.
	if (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\/(\d+)/)) {
		return false;
	}

	// Is webkit? http://stackoverflow.com/a/16459606/376773
	// document is undefined in react-native: https://github.com/facebook/react-native/pull/1632
	return (typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance) ||
		// Is firebug? http://stackoverflow.com/a/398120/376773
		(typeof window !== 'undefined' && window.console && (window.console.firebug || (window.console.exception && window.console.table))) ||
		// Is firefox >= v31?
		// https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
		(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31) ||
		// Double check webkit in userAgent just in case we are in a worker
		(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/));
}

/**
 * Colorize log arguments if enabled.
 *
 * @api public
 */

function formatArgs(args) {
	args[0] = (this.useColors ? '%c' : '') +
		this.namespace +
		(this.useColors ? ' %c' : ' ') +
		args[0] +
		(this.useColors ? '%c ' : ' ') +
		'+' + module.exports.humanize(this.diff);

	if (!this.useColors) {
		return;
	}

	const c = 'color: ' + this.color;
	args.splice(1, 0, c, 'color: inherit');

	// The final "%c" is somewhat tricky, because there could be other
	// arguments passed either before or after the %c, so we need to
	// figure out the correct index to insert the CSS into
	let index = 0;
	let lastC = 0;
	args[0].replace(/%[a-zA-Z%]/g, match => {
		if (match === '%%') {
			return;
		}
		index++;
		if (match === '%c') {
			// We only are interested in the *last* %c
			// (the user may have provided their own)
			lastC = index;
		}
	});

	args.splice(lastC, 0, c);
}

/**
 * Invokes `console.debug()` when available.
 * No-op when `console.debug` is not a "function".
 * If `console.debug` is not available, falls back
 * to `console.log`.
 *
 * @api public
 */
exports.log = console.debug || console.log || (() => {});

/**
 * Save `namespaces`.
 *
 * @param {String} namespaces
 * @api private
 */
function save(namespaces) {
	try {
		if (namespaces) {
			exports.storage.setItem('debug', namespaces);
		} else {
			exports.storage.removeItem('debug');
		}
	} catch (error) {
		// Swallow
		// XXX (@Qix-) should we be logging these?
	}
}

/**
 * Load `namespaces`.
 *
 * @return {String} returns the previously persisted debug modes
 * @api private
 */
function load() {
	let r;
	try {
		r = exports.storage.getItem('debug');
	} catch (error) {
		// Swallow
		// XXX (@Qix-) should we be logging these?
	}

	// If debug isn't set in LS, and we're in Electron, try to load $DEBUG
	if (!r && typeof process !== 'undefined' && 'env' in process) {
		r = process.env.DEBUG;
	}

	return r;
}

/**
 * Localstorage attempts to return the localstorage.
 *
 * This is necessary because safari throws
 * when a user disables cookies/localstorage
 * and you attempt to access it.
 *
 * @return {LocalStorage}
 * @api private
 */

function localstorage() {
	try {
		// TVMLKit (Apple TV JS Runtime) does not have a window object, just localStorage in the global context
		// The Browser also has localStorage in the global context.
		return localStorage;
	} catch (error) {
		// Swallow
		// XXX (@Qix-) should we be logging these?
	}
}

module.exports = require('./common')(exports);

const {formatters} = module.exports;

/**
 * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
 */

formatters.j = function (v) {
	try {
		return JSON.stringify(v);
	} catch (error) {
		return '[UnexpectedJSONParseError]: ' + error.message;
	}
};

}).call(this)}).call(this,require('_process'))
},{"./common":56,"_process":120}],56:[function(require,module,exports){

/**
 * This is the common logic for both the Node.js and web browser
 * implementations of `debug()`.
 */

function setup(env) {
	createDebug.debug = createDebug;
	createDebug.default = createDebug;
	createDebug.coerce = coerce;
	createDebug.disable = disable;
	createDebug.enable = enable;
	createDebug.enabled = enabled;
	createDebug.humanize = require('ms');
	createDebug.destroy = destroy;

	Object.keys(env).forEach(key => {
		createDebug[key] = env[key];
	});

	/**
	* The currently active debug mode names, and names to skip.
	*/

	createDebug.names = [];
	createDebug.skips = [];

	/**
	* Map of special "%n" handling functions, for the debug "format" argument.
	*
	* Valid key names are a single, lower or upper-case letter, i.e. "n" and "N".
	*/
	createDebug.formatters = {};

	/**
	* Selects a color for a debug namespace
	* @param {String} namespace The namespace string for the debug instance to be colored
	* @return {Number|String} An ANSI color code for the given namespace
	* @api private
	*/
	function selectColor(namespace) {
		let hash = 0;

		for (let i = 0; i < namespace.length; i++) {
			hash = ((hash << 5) - hash) + namespace.charCodeAt(i);
			hash |= 0; // Convert to 32bit integer
		}

		return createDebug.colors[Math.abs(hash) % createDebug.colors.length];
	}
	createDebug.selectColor = selectColor;

	/**
	* Create a debugger with the given `namespace`.
	*
	* @param {String} namespace
	* @return {Function}
	* @api public
	*/
	function createDebug(namespace) {
		let prevTime;
		let enableOverride = null;
		let namespacesCache;
		let enabledCache;

		function debug(...args) {
			// Disabled?
			if (!debug.enabled) {
				return;
			}

			const self = debug;

			// Set `diff` timestamp
			const curr = Number(new Date());
			const ms = curr - (prevTime || curr);
			self.diff = ms;
			self.prev = prevTime;
			self.curr = curr;
			prevTime = curr;

			args[0] = createDebug.coerce(args[0]);

			if (typeof args[0] !== 'string') {
				// Anything else let's inspect with %O
				args.unshift('%O');
			}

			// Apply any `formatters` transformations
			let index = 0;
			args[0] = args[0].replace(/%([a-zA-Z%])/g, (match, format) => {
				// If we encounter an escaped % then don't increase the array index
				if (match === '%%') {
					return '%';
				}
				index++;
				const formatter = createDebug.formatters[format];
				if (typeof formatter === 'function') {
					const val = args[index];
					match = formatter.call(self, val);

					// Now we need to remove `args[index]` since it's inlined in the `format`
					args.splice(index, 1);
					index--;
				}
				return match;
			});

			// Apply env-specific formatting (colors, etc.)
			createDebug.formatArgs.call(self, args);

			const logFn = self.log || createDebug.log;
			logFn.apply(self, args);
		}

		debug.namespace = namespace;
		debug.useColors = createDebug.useColors();
		debug.color = createDebug.selectColor(namespace);
		debug.extend = extend;
		debug.destroy = createDebug.destroy; // XXX Temporary. Will be removed in the next major release.

		Object.defineProperty(debug, 'enabled', {
			enumerable: true,
			configurable: false,
			get: () => {
				if (enableOverride !== null) {
					return enableOverride;
				}
				if (namespacesCache !== createDebug.namespaces) {
					namespacesCache = createDebug.namespaces;
					enabledCache = createDebug.enabled(namespace);
				}

				return enabledCache;
			},
			set: v => {
				enableOverride = v;
			}
		});

		// Env-specific initialization logic for debug instances
		if (typeof createDebug.init === 'function') {
			createDebug.init(debug);
		}

		return debug;
	}

	function extend(namespace, delimiter) {
		const newDebug = createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);
		newDebug.log = this.log;
		return newDebug;
	}

	/**
	* Enables a debug mode by namespaces. This can include modes
	* separated by a colon and wildcards.
	*
	* @param {String} namespaces
	* @api public
	*/
	function enable(namespaces) {
		createDebug.save(namespaces);
		createDebug.namespaces = namespaces;

		createDebug.names = [];
		createDebug.skips = [];

		let i;
		const split = (typeof namespaces === 'string' ? namespaces : '').split(/[\s,]+/);
		const len = split.length;

		for (i = 0; i < len; i++) {
			if (!split[i]) {
				// ignore empty strings
				continue;
			}

			namespaces = split[i].replace(/\*/g, '.*?');

			if (namespaces[0] === '-') {
				createDebug.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));
			} else {
				createDebug.names.push(new RegExp('^' + namespaces + '$'));
			}
		}
	}

	/**
	* Disable debug output.
	*
	* @return {String} namespaces
	* @api public
	*/
	function disable() {
		const namespaces = [
			...createDebug.names.map(toNamespace),
			...createDebug.skips.map(toNamespace).map(namespace => '-' + namespace)
		].join(',');
		createDebug.enable('');
		return namespaces;
	}

	/**
	* Returns true if the given mode name is enabled, false otherwise.
	*
	* @param {String} name
	* @return {Boolean}
	* @api public
	*/
	function enabled(name) {
		if (name[name.length - 1] === '*') {
			return true;
		}

		let i;
		let len;

		for (i = 0, len = createDebug.skips.length; i < len; i++) {
			if (createDebug.skips[i].test(name)) {
				return false;
			}
		}

		for (i = 0, len = createDebug.names.length; i < len; i++) {
			if (createDebug.names[i].test(name)) {
				return true;
			}
		}

		return false;
	}

	/**
	* Convert regexp to namespace
	*
	* @param {RegExp} regxep
	* @return {String} namespace
	* @api private
	*/
	function toNamespace(regexp) {
		return regexp.toString()
			.substring(2, regexp.toString().length - 2)
			.replace(/\.\*\?$/, '*');
	}

	/**
	* Coerce `val`.
	*
	* @param {Mixed} val
	* @return {Mixed}
	* @api private
	*/
	function coerce(val) {
		if (val instanceof Error) {
			return val.stack || val.message;
		}
		return val;
	}

	/**
	* XXX DO NOT USE. This is a temporary stub function.
	* XXX It WILL be removed in the next major release.
	*/
	function destroy() {
		console.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');
	}

	createDebug.enable(createDebug.load());

	return createDebug;
}

module.exports = setup;

},{"ms":54}],57:[function(require,module,exports){
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.default = (() => {
    if (typeof self !== "undefined") {
        return self;
    }
    else if (typeof window !== "undefined") {
        return window;
    }
    else {
        return Function("return this")();
    }
})();

},{}],58:[function(require,module,exports){
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.installTimerFunctions = exports.transports = exports.Transport = exports.protocol = exports.Socket = void 0;
const socket_js_1 = require("./socket.js");
Object.defineProperty(exports, "Socket", { enumerable: true, get: function () { return socket_js_1.Socket; } });
exports.protocol = socket_js_1.Socket.protocol;
var transport_js_1 = require("./transport.js");
Object.defineProperty(exports, "Transport", { enumerable: true, get: function () { return transport_js_1.Transport; } });
var index_js_1 = require("./transports/index.js");
Object.defineProperty(exports, "transports", { enumerable: true, get: function () { return index_js_1.transports; } });
var util_js_1 = require("./util.js");
Object.defineProperty(exports, "installTimerFunctions", { enumerable: true, get: function () { return util_js_1.installTimerFunctions; } });

},{"./socket.js":59,"./transport.js":60,"./transports/index.js":61,"./util.js":67}],59:[function(require,module,exports){
"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Socket = void 0;
const index_js_1 = require("./transports/index.js");
const util_js_1 = require("./util.js");
const parseqs_1 = __importDefault(require("parseqs"));
const parseuri_1 = __importDefault(require("parseuri"));
const debug_1 = __importDefault(require("debug")); // debug()
const component_emitter_1 = require("@socket.io/component-emitter");
const engine_io_parser_1 = require("engine.io-parser");
const debug = (0, debug_1.default)("engine.io-client:socket"); // debug()
class Socket extends component_emitter_1.Emitter {
    /**
     * Socket constructor.
     *
     * @param {String|Object} uri or options
     * @param {Object} opts - options
     * @api public
     */
    constructor(uri, opts = {}) {
        super();
        if (uri && "object" === typeof uri) {
            opts = uri;
            uri = null;
        }
        if (uri) {
            uri = (0, parseuri_1.default)(uri);
            opts.hostname = uri.host;
            opts.secure = uri.protocol === "https" || uri.protocol === "wss";
            opts.port = uri.port;
            if (uri.query)
                opts.query = uri.query;
        }
        else if (opts.host) {
            opts.hostname = (0, parseuri_1.default)(opts.host).host;
        }
        (0, util_js_1.installTimerFunctions)(this, opts);
        this.secure =
            null != opts.secure
                ? opts.secure
                : typeof location !== "undefined" && "https:" === location.protocol;
        if (opts.hostname && !opts.port) {
            // if no port is specified manually, use the protocol default
            opts.port = this.secure ? "443" : "80";
        }
        this.hostname =
            opts.hostname ||
                (typeof location !== "undefined" ? location.hostname : "localhost");
        this.port =
            opts.port ||
                (typeof location !== "undefined" && location.port
                    ? location.port
                    : this.secure
                        ? "443"
                        : "80");
        this.transports = opts.transports || ["polling", "websocket"];
        this.readyState = "";
        this.writeBuffer = [];
        this.prevBufferLen = 0;
        this.opts = Object.assign({
            path: "/engine.io",
            agent: false,
            withCredentials: false,
            upgrade: true,
            timestampParam: "t",
            rememberUpgrade: false,
            rejectUnauthorized: true,
            perMessageDeflate: {
                threshold: 1024
            },
            transportOptions: {},
            closeOnBeforeunload: true
        }, opts);
        this.opts.path = this.opts.path.replace(/\/$/, "") + "/";
        if (typeof this.opts.query === "string") {
            this.opts.query = parseqs_1.default.decode(this.opts.query);
        }
        // set on handshake
        this.id = null;
        this.upgrades = null;
        this.pingInterval = null;
        this.pingTimeout = null;
        // set on heartbeat
        this.pingTimeoutTimer = null;
        if (typeof addEventListener === "function") {
            if (this.opts.closeOnBeforeunload) {
                // Firefox closes the connection when the "beforeunload" event is emitted but not Chrome. This event listener
                // ensures every browser behaves the same (no "disconnect" event at the Socket.IO level when the page is
                // closed/reloaded)
                addEventListener("beforeunload", () => {
                    if (this.transport) {
                        // silently close the transport
                        this.transport.removeAllListeners();
                        this.transport.close();
                    }
                }, false);
            }
            if (this.hostname !== "localhost") {
                this.offlineEventListener = () => {
                    this.onClose("transport close");
                };
                addEventListener("offline", this.offlineEventListener, false);
            }
        }
        this.open();
    }
    /**
     * Creates transport of the given type.
     *
     * @param {String} transport name
     * @return {Transport}
     * @api private
     */
    createTransport(name) {
        debug('creating transport "%s"', name);
        const query = clone(this.opts.query);
        // append engine.io protocol identifier
        query.EIO = engine_io_parser_1.protocol;
        // transport name
        query.transport = name;
        // session id if we already have one
        if (this.id)
            query.sid = this.id;
        const opts = Object.assign({}, this.opts.transportOptions[name], this.opts, {
            query,
            socket: this,
            hostname: this.hostname,
            secure: this.secure,
            port: this.port
        });
        debug("options: %j", opts);
        return new index_js_1.transports[name](opts);
    }
    /**
     * Initializes transport to use and starts probe.
     *
     * @api private
     */
    open() {
        let transport;
        if (this.opts.rememberUpgrade &&
            Socket.priorWebsocketSuccess &&
            this.transports.indexOf("websocket") !== -1) {
            transport = "websocket";
        }
        else if (0 === this.transports.length) {
            // Emit error on next tick so it can be listened to
            this.setTimeoutFn(() => {
                this.emitReserved("error", "No transports available");
            }, 0);
            return;
        }
        else {
            transport = this.transports[0];
        }
        this.readyState = "opening";
        // Retry with the next transport if the transport is disabled (jsonp: false)
        try {
            transport = this.createTransport(transport);
        }
        catch (e) {
            debug("error while creating transport: %s", e);
            this.transports.shift();
            this.open();
            return;
        }
        transport.open();
        this.setTransport(transport);
    }
    /**
     * Sets the current transport. Disables the existing one (if any).
     *
     * @api private
     */
    setTransport(transport) {
        debug("setting transport %s", transport.name);
        if (this.transport) {
            debug("clearing existing transport %s", this.transport.name);
            this.transport.removeAllListeners();
        }
        // set up transport
        this.transport = transport;
        // set up transport listeners
        transport
            .on("drain", this.onDrain.bind(this))
            .on("packet", this.onPacket.bind(this))
            .on("error", this.onError.bind(this))
            .on("close", () => {
            this.onClose("transport close");
        });
    }
    /**
     * Probes a transport.
     *
     * @param {String} transport name
     * @api private
     */
    probe(name) {
        debug('probing transport "%s"', name);
        let transport = this.createTransport(name);
        let failed = false;
        Socket.priorWebsocketSuccess = false;
        const onTransportOpen = () => {
            if (failed)
                return;
            debug('probe transport "%s" opened', name);
            transport.send([{ type: "ping", data: "probe" }]);
            transport.once("packet", msg => {
                if (failed)
                    return;
                if ("pong" === msg.type && "probe" === msg.data) {
                    debug('probe transport "%s" pong', name);
                    this.upgrading = true;
                    this.emitReserved("upgrading", transport);
                    if (!transport)
                        return;
                    Socket.priorWebsocketSuccess = "websocket" === transport.name;
                    debug('pausing current transport "%s"', this.transport.name);
                    this.transport.pause(() => {
                        if (failed)
                            return;
                        if ("closed" === this.readyState)
                            return;
                        debug("changing transport and sending upgrade packet");
                        cleanup();
                        this.setTransport(transport);
                        transport.send([{ type: "upgrade" }]);
                        this.emitReserved("upgrade", transport);
                        transport = null;
                        this.upgrading = false;
                        this.flush();
                    });
                }
                else {
                    debug('probe transport "%s" failed', name);
                    const err = new Error("probe error");
                    // @ts-ignore
                    err.transport = transport.name;
                    this.emitReserved("upgradeError", err);
                }
            });
        };
        function freezeTransport() {
            if (failed)
                return;
            // Any callback called by transport should be ignored since now
            failed = true;
            cleanup();
            transport.close();
            transport = null;
        }
        // Handle any error that happens while probing
        const onerror = err => {
            const error = new Error("probe error: " + err);
            // @ts-ignore
            error.transport = transport.name;
            freezeTransport();
            debug('probe transport "%s" failed because of error: %s', name, err);
            this.emitReserved("upgradeError", error);
        };
        function onTransportClose() {
            onerror("transport closed");
        }
        // When the socket is closed while we're probing
        function onclose() {
            onerror("socket closed");
        }
        // When the socket is upgraded while we're probing
        function onupgrade(to) {
            if (transport && to.name !== transport.name) {
                debug('"%s" works - aborting "%s"', to.name, transport.name);
                freezeTransport();
            }
        }
        // Remove all listeners on the transport and on self
        const cleanup = () => {
            transport.removeListener("open", onTransportOpen);
            transport.removeListener("error", onerror);
            transport.removeListener("close", onTransportClose);
            this.off("close", onclose);
            this.off("upgrading", onupgrade);
        };
        transport.once("open", onTransportOpen);
        transport.once("error", onerror);
        transport.once("close", onTransportClose);
        this.once("close", onclose);
        this.once("upgrading", onupgrade);
        transport.open();
    }
    /**
     * Called when connection is deemed open.
     *
     * @api private
     */
    onOpen() {
        debug("socket open");
        this.readyState = "open";
        Socket.priorWebsocketSuccess = "websocket" === this.transport.name;
        this.emitReserved("open");
        this.flush();
        // we check for `readyState` in case an `open`
        // listener already closed the socket
        if ("open" === this.readyState &&
            this.opts.upgrade &&
            this.transport.pause) {
            debug("starting upgrade probes");
            let i = 0;
            const l = this.upgrades.length;
            for (; i < l; i++) {
                this.probe(this.upgrades[i]);
            }
        }
    }
    /**
     * Handles a packet.
     *
     * @api private
     */
    onPacket(packet) {
        if ("opening" === this.readyState ||
            "open" === this.readyState ||
            "closing" === this.readyState) {
            debug('socket receive: type "%s", data "%s"', packet.type, packet.data);
            this.emitReserved("packet", packet);
            // Socket is live - any packet counts
            this.emitReserved("heartbeat");
            switch (packet.type) {
                case "open":
                    this.onHandshake(JSON.parse(packet.data));
                    break;
                case "ping":
                    this.resetPingTimeout();
                    this.sendPacket("pong");
                    this.emitReserved("ping");
                    this.emitReserved("pong");
                    break;
                case "error":
                    const err = new Error("server error");
                    // @ts-ignore
                    err.code = packet.data;
                    this.onError(err);
                    break;
                case "message":
                    this.emitReserved("data", packet.data);
                    this.emitReserved("message", packet.data);
                    break;
            }
        }
        else {
            debug('packet received with socket readyState "%s"', this.readyState);
        }
    }
    /**
     * Called upon handshake completion.
     *
     * @param {Object} data - handshake obj
     * @api private
     */
    onHandshake(data) {
        this.emitReserved("handshake", data);
        this.id = data.sid;
        this.transport.query.sid = data.sid;
        this.upgrades = this.filterUpgrades(data.upgrades);
        this.pingInterval = data.pingInterval;
        this.pingTimeout = data.pingTimeout;
        this.onOpen();
        // In case open handler closes socket
        if ("closed" === this.readyState)
            return;
        this.resetPingTimeout();
    }
    /**
     * Sets and resets ping timeout timer based on server pings.
     *
     * @api private
     */
    resetPingTimeout() {
        this.clearTimeoutFn(this.pingTimeoutTimer);
        this.pingTimeoutTimer = this.setTimeoutFn(() => {
            this.onClose("ping timeout");
        }, this.pingInterval + this.pingTimeout);
        if (this.opts.autoUnref) {
            this.pingTimeoutTimer.unref();
        }
    }
    /**
     * Called on `drain` event
     *
     * @api private
     */
    onDrain() {
        this.writeBuffer.splice(0, this.prevBufferLen);
        // setting prevBufferLen = 0 is very important
        // for example, when upgrading, upgrade packet is sent over,
        // and a nonzero prevBufferLen could cause problems on `drain`
        this.prevBufferLen = 0;
        if (0 === this.writeBuffer.length) {
            this.emitReserved("drain");
        }
        else {
            this.flush();
        }
    }
    /**
     * Flush write buffers.
     *
     * @api private
     */
    flush() {
        if ("closed" !== this.readyState &&
            this.transport.writable &&
            !this.upgrading &&
            this.writeBuffer.length) {
            debug("flushing %d packets in socket", this.writeBuffer.length);
            this.transport.send(this.writeBuffer);
            // keep track of current length of writeBuffer
            // splice writeBuffer and callbackBuffer on `drain`
            this.prevBufferLen = this.writeBuffer.length;
            this.emitReserved("flush");
        }
    }
    /**
     * Sends a message.
     *
     * @param {String} message.
     * @param {Function} callback function.
     * @param {Object} options.
     * @return {Socket} for chaining.
     * @api public
     */
    write(msg, options, fn) {
        this.sendPacket("message", msg, options, fn);
        return this;
    }
    send(msg, options, fn) {
        this.sendPacket("message", msg, options, fn);
        return this;
    }
    /**
     * Sends a packet.
     *
     * @param {String} packet type.
     * @param {String} data.
     * @param {Object} options.
     * @param {Function} callback function.
     * @api private
     */
    sendPacket(type, data, options, fn) {
        if ("function" === typeof data) {
            fn = data;
            data = undefined;
        }
        if ("function" === typeof options) {
            fn = options;
            options = null;
        }
        if ("closing" === this.readyState || "closed" === this.readyState) {
            return;
        }
        options = options || {};
        options.compress = false !== options.compress;
        const packet = {
            type: type,
            data: data,
            options: options
        };
        this.emitReserved("packetCreate", packet);
        this.writeBuffer.push(packet);
        if (fn)
            this.once("flush", fn);
        this.flush();
    }
    /**
     * Closes the connection.
     *
     * @api public
     */
    close() {
        const close = () => {
            this.onClose("forced close");
            debug("socket closing - telling transport to close");
            this.transport.close();
        };
        const cleanupAndClose = () => {
            this.off("upgrade", cleanupAndClose);
            this.off("upgradeError", cleanupAndClose);
            close();
        };
        const waitForUpgrade = () => {
            // wait for upgrade to finish since we can't send packets while pausing a transport
            this.once("upgrade", cleanupAndClose);
            this.once("upgradeError", cleanupAndClose);
        };
        if ("opening" === this.readyState || "open" === this.readyState) {
            this.readyState = "closing";
            if (this.writeBuffer.length) {
                this.once("drain", () => {
                    if (this.upgrading) {
                        waitForUpgrade();
                    }
                    else {
                        close();
                    }
                });
            }
            else if (this.upgrading) {
                waitForUpgrade();
            }
            else {
                close();
            }
        }
        return this;
    }
    /**
     * Called upon transport error
     *
     * @api private
     */
    onError(err) {
        debug("socket error %j", err);
        Socket.priorWebsocketSuccess = false;
        this.emitReserved("error", err);
        this.onClose("transport error", err);
    }
    /**
     * Called upon transport close.
     *
     * @api private
     */
    onClose(reason, desc) {
        if ("opening" === this.readyState ||
            "open" === this.readyState ||
            "closing" === this.readyState) {
            debug('socket close with reason: "%s"', reason);
            // clear timers
            this.clearTimeoutFn(this.pingTimeoutTimer);
            // stop event from firing again for transport
            this.transport.removeAllListeners("close");
            // ensure transport won't stay open
            this.transport.close();
            // ignore further transport communication
            this.transport.removeAllListeners();
            if (typeof removeEventListener === "function") {
                removeEventListener("offline", this.offlineEventListener, false);
            }
            // set ready state
            this.readyState = "closed";
            // clear session id
            this.id = null;
            // emit close event
            this.emitReserved("close", reason, desc);
            // clean buffers after, so users can still
            // grab the buffers on `close` event
            this.writeBuffer = [];
            this.prevBufferLen = 0;
        }
    }
    /**
     * Filters upgrades, returning only those matching client transports.
     *
     * @param {Array} server upgrades
     * @api private
     *
     */
    filterUpgrades(upgrades) {
        const filteredUpgrades = [];
        let i = 0;
        const j = upgrades.length;
        for (; i < j; i++) {
            if (~this.transports.indexOf(upgrades[i]))
                filteredUpgrades.push(upgrades[i]);
        }
        return filteredUpgrades;
    }
}
exports.Socket = Socket;
Socket.protocol = engine_io_parser_1.protocol;
function clone(obj) {
    const o = {};
    for (let i in obj) {
        if (obj.hasOwnProperty(i)) {
            o[i] = obj[i];
        }
    }
    return o;
}

},{"./transports/index.js":61,"./util.js":67,"@socket.io/component-emitter":35,"debug":55,"engine.io-parser":72,"parseqs":117,"parseuri":118}],60:[function(require,module,exports){
"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Transport = void 0;
const engine_io_parser_1 = require("engine.io-parser");
const component_emitter_1 = require("@socket.io/component-emitter");
const util_js_1 = require("./util.js");
const debug_1 = __importDefault(require("debug")); // debug()
const debug = (0, debug_1.default)("engine.io-client:transport"); // debug()
class Transport extends component_emitter_1.Emitter {
    /**
     * Transport abstract constructor.
     *
     * @param {Object} options.
     * @api private
     */
    constructor(opts) {
        super();
        this.writable = false;
        (0, util_js_1.installTimerFunctions)(this, opts);
        this.opts = opts;
        this.query = opts.query;
        this.readyState = "";
        this.socket = opts.socket;
    }
    /**
     * Emits an error.
     *
     * @param {String} str
     * @return {Transport} for chaining
     * @api protected
     */
    onError(msg, desc) {
        const err = new Error(msg);
        // @ts-ignore
        err.type = "TransportError";
        // @ts-ignore
        err.description = desc;
        super.emit("error", err);
        return this;
    }
    /**
     * Opens the transport.
     *
     * @api public
     */
    open() {
        if ("closed" === this.readyState || "" === this.readyState) {
            this.readyState = "opening";
            this.doOpen();
        }
        return this;
    }
    /**
     * Closes the transport.
     *
     * @api public
     */
    close() {
        if ("opening" === this.readyState || "open" === this.readyState) {
            this.doClose();
            this.onClose();
        }
        return this;
    }
    /**
     * Sends multiple packets.
     *
     * @param {Array} packets
     * @api public
     */
    send(packets) {
        if ("open" === this.readyState) {
            this.write(packets);
        }
        else {
            // this might happen if the transport was silently closed in the beforeunload event handler
            debug("transport is not open, discarding packets");
        }
    }
    /**
     * Called upon open
     *
     * @api protected
     */
    onOpen() {
        this.readyState = "open";
        this.writable = true;
        super.emit("open");
    }
    /**
     * Called with data.
     *
     * @param {String} data
     * @api protected
     */
    onData(data) {
        const packet = (0, engine_io_parser_1.decodePacket)(data, this.socket.binaryType);
        this.onPacket(packet);
    }
    /**
     * Called with a decoded packet.
     *
     * @api protected
     */
    onPacket(packet) {
        super.emit("packet", packet);
    }
    /**
     * Called upon close.
     *
     * @api protected
     */
    onClose() {
        this.readyState = "closed";
        super.emit("close");
    }
}
exports.Transport = Transport;

},{"./util.js":67,"@socket.io/component-emitter":35,"debug":55,"engine.io-parser":72}],61:[function(require,module,exports){
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.transports = void 0;
const polling_xhr_js_1 = require("./polling-xhr.js");
const websocket_js_1 = require("./websocket.js");
exports.transports = {
    websocket: websocket_js_1.WS,
    polling: polling_xhr_js_1.XHR
};

},{"./polling-xhr.js":62,"./websocket.js":65}],62:[function(require,module,exports){
"use strict";
/* global attachEvent */
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Request = exports.XHR = void 0;
const xmlhttprequest_js_1 = __importDefault(require("./xmlhttprequest.js"));
const debug_1 = __importDefault(require("debug")); // debug()
const globalThis_js_1 = __importDefault(require("../globalThis.js"));
const util_js_1 = require("../util.js");
const component_emitter_1 = require("@socket.io/component-emitter");
const polling_js_1 = require("./polling.js");
const debug = (0, debug_1.default)("engine.io-client:polling-xhr"); // debug()
/**
 * Empty function
 */
function empty() { }
const hasXHR2 = (function () {
    const xhr = new xmlhttprequest_js_1.default({
        xdomain: false
    });
    return null != xhr.responseType;
})();
class XHR extends polling_js_1.Polling {
    /**
     * XHR Polling constructor.
     *
     * @param {Object} opts
     * @api public
     */
    constructor(opts) {
        super(opts);
        if (typeof location !== "undefined") {
            const isSSL = "https:" === location.protocol;
            let port = location.port;
            // some user agents have empty `location.port`
            if (!port) {
                port = isSSL ? "443" : "80";
            }
            this.xd =
                (typeof location !== "undefined" &&
                    opts.hostname !== location.hostname) ||
                    port !== opts.port;
            this.xs = opts.secure !== isSSL;
        }
        /**
         * XHR supports binary
         */
        const forceBase64 = opts && opts.forceBase64;
        this.supportsBinary = hasXHR2 && !forceBase64;
    }
    /**
     * Creates a request.
     *
     * @param {String} method
     * @api private
     */
    request(opts = {}) {
        Object.assign(opts, { xd: this.xd, xs: this.xs }, this.opts);
        return new Request(this.uri(), opts);
    }
    /**
     * Sends data.
     *
     * @param {String} data to send.
     * @param {Function} called upon flush.
     * @api private
     */
    doWrite(data, fn) {
        const req = this.request({
            method: "POST",
            data: data
        });
        req.on("success", fn);
        req.on("error", err => {
            this.onError("xhr post error", err);
        });
    }
    /**
     * Starts a poll cycle.
     *
     * @api private
     */
    doPoll() {
        debug("xhr poll");
        const req = this.request();
        req.on("data", this.onData.bind(this));
        req.on("error", err => {
            this.onError("xhr poll error", err);
        });
        this.pollXhr = req;
    }
}
exports.XHR = XHR;
class Request extends component_emitter_1.Emitter {
    /**
     * Request constructor
     *
     * @param {Object} options
     * @api public
     */
    constructor(uri, opts) {
        super();
        (0, util_js_1.installTimerFunctions)(this, opts);
        this.opts = opts;
        this.method = opts.method || "GET";
        this.uri = uri;
        this.async = false !== opts.async;
        this.data = undefined !== opts.data ? opts.data : null;
        this.create();
    }
    /**
     * Creates the XHR object and sends the request.
     *
     * @api private
     */
    create() {
        const opts = (0, util_js_1.pick)(this.opts, "agent", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized", "autoUnref");
        opts.xdomain = !!this.opts.xd;
        opts.xscheme = !!this.opts.xs;
        const xhr = (this.xhr = new xmlhttprequest_js_1.default(opts));
        try {
            debug("xhr open %s: %s", this.method, this.uri);
            xhr.open(this.method, this.uri, this.async);
            try {
                if (this.opts.extraHeaders) {
                    xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);
                    for (let i in this.opts.extraHeaders) {
                        if (this.opts.extraHeaders.hasOwnProperty(i)) {
                            xhr.setRequestHeader(i, this.opts.extraHeaders[i]);
                        }
                    }
                }
            }
            catch (e) { }
            if ("POST" === this.method) {
                try {
                    xhr.setRequestHeader("Content-type", "text/plain;charset=UTF-8");
                }
                catch (e) { }
            }
            try {
                xhr.setRequestHeader("Accept", "*/*");
            }
            catch (e) { }
            // ie6 check
            if ("withCredentials" in xhr) {
                xhr.withCredentials = this.opts.withCredentials;
            }
            if (this.opts.requestTimeout) {
                xhr.timeout = this.opts.requestTimeout;
            }
            xhr.onreadystatechange = () => {
                if (4 !== xhr.readyState)
                    return;
                if (200 === xhr.status || 1223 === xhr.status) {
                    this.onLoad();
                }
                else {
                    // make sure the `error` event handler that's user-set
                    // does not throw in the same tick and gets caught here
                    this.setTimeoutFn(() => {
                        this.onError(typeof xhr.status === "number" ? xhr.status : 0);
                    }, 0);
                }
            };
            debug("xhr data %s", this.data);
            xhr.send(this.data);
        }
        catch (e) {
            // Need to defer since .create() is called directly from the constructor
            // and thus the 'error' event can only be only bound *after* this exception
            // occurs.  Therefore, also, we cannot throw here at all.
            this.setTimeoutFn(() => {
                this.onError(e);
            }, 0);
            return;
        }
        if (typeof document !== "undefined") {
            this.index = Request.requestsCount++;
            Request.requests[this.index] = this;
        }
    }
    /**
     * Called upon successful response.
     *
     * @api private
     */
    onSuccess() {
        this.emit("success");
        this.cleanup();
    }
    /**
     * Called if we have data.
     *
     * @api private
     */
    onData(data) {
        this.emit("data", data);
        this.onSuccess();
    }
    /**
     * Called upon error.
     *
     * @api private
     */
    onError(err) {
        this.emit("error", err);
        this.cleanup(true);
    }
    /**
     * Cleans up house.
     *
     * @api private
     */
    cleanup(fromError) {
        if ("undefined" === typeof this.xhr || null === this.xhr) {
            return;
        }
        this.xhr.onreadystatechange = empty;
        if (fromError) {
            try {
                this.xhr.abort();
            }
            catch (e) { }
        }
        if (typeof document !== "undefined") {
            delete Request.requests[this.index];
        }
        this.xhr = null;
    }
    /**
     * Called upon load.
     *
     * @api private
     */
    onLoad() {
        const data = this.xhr.responseText;
        if (data !== null) {
            this.onData(data);
        }
    }
    /**
     * Aborts the request.
     *
     * @api public
     */
    abort() {
        this.cleanup();
    }
}
exports.Request = Request;
Request.requestsCount = 0;
Request.requests = {};
/**
 * Aborts pending requests when unloading the window. This is needed to prevent
 * memory leaks (e.g. when using IE) and to ensure that no spurious error is
 * emitted.
 */
if (typeof document !== "undefined") {
    // @ts-ignore
    if (typeof attachEvent === "function") {
        // @ts-ignore
        attachEvent("onunload", unloadHandler);
    }
    else if (typeof addEventListener === "function") {
        const terminationEvent = "onpagehide" in globalThis_js_1.default ? "pagehide" : "unload";
        addEventListener(terminationEvent, unloadHandler, false);
    }
}
function unloadHandler() {
    for (let i in Request.requests) {
        if (Request.requests.hasOwnProperty(i)) {
            Request.requests[i].abort();
        }
    }
}

},{"../globalThis.js":57,"../util.js":67,"./polling.js":63,"./xmlhttprequest.js":66,"@socket.io/component-emitter":35,"debug":55}],63:[function(require,module,exports){
"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Polling = void 0;
const transport_js_1 = require("../transport.js");
const debug_1 = __importDefault(require("debug")); // debug()
const yeast_1 = __importDefault(require("yeast"));
const parseqs_1 = __importDefault(require("parseqs"));
const engine_io_parser_1 = require("engine.io-parser");
const debug = (0, debug_1.default)("engine.io-client:polling"); // debug()
class Polling extends transport_js_1.Transport {
    constructor() {
        super(...arguments);
        this.polling = false;
    }
    /**
     * Transport name.
     */
    get name() {
        return "polling";
    }
    /**
     * Opens the socket (triggers polling). We write a PING message to determine
     * when the transport is open.
     *
     * @api private
     */
    doOpen() {
        this.poll();
    }
    /**
     * Pauses polling.
     *
     * @param {Function} callback upon buffers are flushed and transport is paused
     * @api private
     */
    pause(onPause) {
        this.readyState = "pausing";
        const pause = () => {
            debug("paused");
            this.readyState = "paused";
            onPause();
        };
        if (this.polling || !this.writable) {
            let total = 0;
            if (this.polling) {
                debug("we are currently polling - waiting to pause");
                total++;
                this.once("pollComplete", function () {
                    debug("pre-pause polling complete");
                    --total || pause();
                });
            }
            if (!this.writable) {
                debug("we are currently writing - waiting to pause");
                total++;
                this.once("drain", function () {
                    debug("pre-pause writing complete");
                    --total || pause();
                });
            }
        }
        else {
            pause();
        }
    }
    /**
     * Starts polling cycle.
     *
     * @api public
     */
    poll() {
        debug("polling");
        this.polling = true;
        this.doPoll();
        this.emit("poll");
    }
    /**
     * Overloads onData to detect payloads.
     *
     * @api private
     */
    onData(data) {
        debug("polling got data %s", data);
        const callback = packet => {
            // if its the first message we consider the transport open
            if ("opening" === this.readyState && packet.type === "open") {
                this.onOpen();
            }
            // if its a close packet, we close the ongoing requests
            if ("close" === packet.type) {
                this.onClose();
                return false;
            }
            // otherwise bypass onData and handle the message
            this.onPacket(packet);
        };
        // decode payload
        (0, engine_io_parser_1.decodePayload)(data, this.socket.binaryType).forEach(callback);
        // if an event did not trigger closing
        if ("closed" !== this.readyState) {
            // if we got data we're not polling
            this.polling = false;
            this.emit("pollComplete");
            if ("open" === this.readyState) {
                this.poll();
            }
            else {
                debug('ignoring poll - transport state "%s"', this.readyState);
            }
        }
    }
    /**
     * For polling, send a close packet.
     *
     * @api private
     */
    doClose() {
        const close = () => {
            debug("writing close packet");
            this.write([{ type: "close" }]);
        };
        if ("open" === this.readyState) {
            debug("transport open - closing");
            close();
        }
        else {
            // in case we're trying to close while
            // handshaking is in progress (GH-164)
            debug("transport not open - deferring close");
            this.once("open", close);
        }
    }
    /**
     * Writes a packets payload.
     *
     * @param {Array} data packets
     * @param {Function} drain callback
     * @api private
     */
    write(packets) {
        this.writable = false;
        (0, engine_io_parser_1.encodePayload)(packets, data => {
            this.doWrite(data, () => {
                this.writable = true;
                this.emit("drain");
            });
        });
    }
    /**
     * Generates uri for connection.
     *
     * @api private
     */
    uri() {
        let query = this.query || {};
        const schema = this.opts.secure ? "https" : "http";
        let port = "";
        // cache busting is forced
        if (false !== this.opts.timestampRequests) {
            query[this.opts.timestampParam] = (0, yeast_1.default)();
        }
        if (!this.supportsBinary && !query.sid) {
            query.b64 = 1;
        }
        // avoid port if default for schema
        if (this.opts.port &&
            (("https" === schema && Number(this.opts.port) !== 443) ||
                ("http" === schema && Number(this.opts.port) !== 80))) {
            port = ":" + this.opts.port;
        }
        const encodedQuery = parseqs_1.default.encode(query);
        const ipv6 = this.opts.hostname.indexOf(":") !== -1;
        return (schema +
            "://" +
            (ipv6 ? "[" + this.opts.hostname + "]" : this.opts.hostname) +
            port +
            this.opts.path +
            (encodedQuery.length ? "?" + encodedQuery : ""));
    }
}
exports.Polling = Polling;

},{"../transport.js":60,"debug":55,"engine.io-parser":72,"parseqs":117,"yeast":176}],64:[function(require,module,exports){
"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.defaultBinaryType = exports.usingBrowserWebSocket = exports.WebSocket = exports.nextTick = void 0;
const globalThis_js_1 = __importDefault(require("../globalThis.js"));
exports.nextTick = (() => {
    const isPromiseAvailable = typeof Promise === "function" && typeof Promise.resolve === "function";
    if (isPromiseAvailable) {
        return cb => Promise.resolve().then(cb);
    }
    else {
        return (cb, setTimeoutFn) => setTimeoutFn(cb, 0);
    }
})();
exports.WebSocket = globalThis_js_1.default.WebSocket || globalThis_js_1.default.MozWebSocket;
exports.usingBrowserWebSocket = true;
exports.defaultBinaryType = "arraybuffer";

},{"../globalThis.js":57}],65:[function(require,module,exports){
(function (Buffer){(function (){
"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.WS = void 0;
const transport_js_1 = require("../transport.js");
const parseqs_1 = __importDefault(require("parseqs"));
const yeast_1 = __importDefault(require("yeast"));
const util_js_1 = require("../util.js");
const websocket_constructor_js_1 = require("./websocket-constructor.js");
const debug_1 = __importDefault(require("debug")); // debug()
const engine_io_parser_1 = require("engine.io-parser");
const debug = (0, debug_1.default)("engine.io-client:websocket"); // debug()
// detect ReactNative environment
const isReactNative = typeof navigator !== "undefined" &&
    typeof navigator.product === "string" &&
    navigator.product.toLowerCase() === "reactnative";
class WS extends transport_js_1.Transport {
    /**
     * WebSocket transport constructor.
     *
     * @api {Object} connection options
     * @api public
     */
    constructor(opts) {
        super(opts);
        this.supportsBinary = !opts.forceBase64;
    }
    /**
     * Transport name.
     *
     * @api public
     */
    get name() {
        return "websocket";
    }
    /**
     * Opens socket.
     *
     * @api private
     */
    doOpen() {
        if (!this.check()) {
            // let probe timeout
            return;
        }
        const uri = this.uri();
        const protocols = this.opts.protocols;
        // React Native only supports the 'headers' option, and will print a warning if anything else is passed
        const opts = isReactNative
            ? {}
            : (0, util_js_1.pick)(this.opts, "agent", "perMessageDeflate", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized", "localAddress", "protocolVersion", "origin", "maxPayload", "family", "checkServerIdentity");
        if (this.opts.extraHeaders) {
            opts.headers = this.opts.extraHeaders;
        }
        try {
            this.ws =
                websocket_constructor_js_1.usingBrowserWebSocket && !isReactNative
                    ? protocols
                        ? new websocket_constructor_js_1.WebSocket(uri, protocols)
                        : new websocket_constructor_js_1.WebSocket(uri)
                    : new websocket_constructor_js_1.WebSocket(uri, protocols, opts);
        }
        catch (err) {
            return this.emit("error", err);
        }
        this.ws.binaryType = this.socket.binaryType || websocket_constructor_js_1.defaultBinaryType;
        this.addEventListeners();
    }
    /**
     * Adds event listeners to the socket
     *
     * @api private
     */
    addEventListeners() {
        this.ws.onopen = () => {
            if (this.opts.autoUnref) {
                this.ws._socket.unref();
            }
            this.onOpen();
        };
        this.ws.onclose = this.onClose.bind(this);
        this.ws.onmessage = ev => this.onData(ev.data);
        this.ws.onerror = e => this.onError("websocket error", e);
    }
    /**
     * Writes data to socket.
     *
     * @param {Array} array of packets.
     * @api private
     */
    write(packets) {
        this.writable = false;
        // encodePacket efficient as it uses WS framing
        // no need for encodePayload
        for (let i = 0; i < packets.length; i++) {
            const packet = packets[i];
            const lastPacket = i === packets.length - 1;
            (0, engine_io_parser_1.encodePacket)(packet, this.supportsBinary, data => {
                // always create a new object (GH-437)
                const opts = {};
                if (!websocket_constructor_js_1.usingBrowserWebSocket) {
                    if (packet.options) {
                        opts.compress = packet.options.compress;
                    }
                    if (this.opts.perMessageDeflate) {
                        const len = "string" === typeof data ? Buffer.byteLength(data) : data.length;
                        if (len < this.opts.perMessageDeflate.threshold) {
                            opts.compress = false;
                        }
                    }
                }
                // Sometimes the websocket has already been closed but the browser didn't
                // have a chance of informing us about it yet, in that case send will
                // throw an error
                try {
                    if (websocket_constructor_js_1.usingBrowserWebSocket) {
                        // TypeError is thrown when passing the second argument on Safari
                        this.ws.send(data);
                    }
                    else {
                        this.ws.send(data, opts);
                    }
                }
                catch (e) {
                    debug("websocket closed before onclose event");
                }
                if (lastPacket) {
                    // fake drain
                    // defer to next tick to allow Socket to clear writeBuffer
                    (0, websocket_constructor_js_1.nextTick)(() => {
                        this.writable = true;
                        this.emit("drain");
                    }, this.setTimeoutFn);
                }
            });
        }
    }
    /**
     * Closes socket.
     *
     * @api private
     */
    doClose() {
        if (typeof this.ws !== "undefined") {
            this.ws.close();
            this.ws = null;
        }
    }
    /**
     * Generates uri for connection.
     *
     * @api private
     */
    uri() {
        let query = this.query || {};
        const schema = this.opts.secure ? "wss" : "ws";
        let port = "";
        // avoid port if default for schema
        if (this.opts.port &&
            (("wss" === schema && Number(this.opts.port) !== 443) ||
                ("ws" === schema && Number(this.opts.port) !== 80))) {
            port = ":" + this.opts.port;
        }
        // append timestamp to URI
        if (this.opts.timestampRequests) {
            query[this.opts.timestampParam] = (0, yeast_1.default)();
        }
        // communicate binary support capabilities
        if (!this.supportsBinary) {
            query.b64 = 1;
        }
        const encodedQuery = parseqs_1.default.encode(query);
        const ipv6 = this.opts.hostname.indexOf(":") !== -1;
        return (schema +
            "://" +
            (ipv6 ? "[" + this.opts.hostname + "]" : this.opts.hostname) +
            port +
            this.opts.path +
            (encodedQuery.length ? "?" + encodedQuery : ""));
    }
    /**
     * Feature detection for WebSocket.
     *
     * @return {Boolean} whether this transport is available.
     * @api public
     */
    check() {
        return (!!websocket_constructor_js_1.WebSocket &&
            !("__initialize" in websocket_constructor_js_1.WebSocket && this.name === WS.prototype.name));
    }
}
exports.WS = WS;

}).call(this)}).call(this,require("buffer").Buffer)
},{"../transport.js":60,"../util.js":67,"./websocket-constructor.js":64,"buffer":44,"debug":55,"engine.io-parser":72,"parseqs":117,"yeast":176}],66:[function(require,module,exports){
"use strict";
// browser shim for xmlhttprequest module
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const has_cors_1 = __importDefault(require("has-cors"));
const globalThis_js_1 = __importDefault(require("../globalThis.js"));
function default_1(opts) {
    const xdomain = opts.xdomain;
    // XMLHttpRequest can be disabled on IE
    try {
        if ("undefined" !== typeof XMLHttpRequest && (!xdomain || has_cors_1.default)) {
            return new XMLHttpRequest();
        }
    }
    catch (e) { }
    if (!xdomain) {
        try {
            return new globalThis_js_1.default[["Active"].concat("Object").join("X")]("Microsoft.XMLHTTP");
        }
        catch (e) { }
    }
}
exports.default = default_1;

},{"../globalThis.js":57,"has-cors":80}],67:[function(require,module,exports){
"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.installTimerFunctions = exports.pick = void 0;
const globalThis_js_1 = __importDefault(require("./globalThis.js"));
function pick(obj, ...attr) {
    return attr.reduce((acc, k) => {
        if (obj.hasOwnProperty(k)) {
            acc[k] = obj[k];
        }
        return acc;
    }, {});
}
exports.pick = pick;
// Keep a reference to the real timeout functions so they can be used when overridden
const NATIVE_SET_TIMEOUT = setTimeout;
const NATIVE_CLEAR_TIMEOUT = clearTimeout;
function installTimerFunctions(obj, opts) {
    if (opts.useNativeTimers) {
        obj.setTimeoutFn = NATIVE_SET_TIMEOUT.bind(globalThis_js_1.default);
        obj.clearTimeoutFn = NATIVE_CLEAR_TIMEOUT.bind(globalThis_js_1.default);
    }
    else {
        obj.setTimeoutFn = setTimeout.bind(globalThis_js_1.default);
        obj.clearTimeoutFn = clearTimeout.bind(globalThis_js_1.default);
    }
}
exports.installTimerFunctions = installTimerFunctions;

},{"./globalThis.js":57}],68:[function(require,module,exports){
/*
 * base64-arraybuffer 1.0.1 <https://github.com/niklasvh/base64-arraybuffer>
 * Copyright (c) 2021 Niklas von Hertzen <https://hertzen.com>
 * Released under MIT License
 */
(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
    typeof define === 'function' && define.amd ? define(['exports'], factory) :
    (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global['base64-arraybuffer'] = {}));
}(this, (function (exports) { 'use strict';

    var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
    // Use a lookup table to find the index.
    var lookup = typeof Uint8Array === 'undefined' ? [] : new Uint8Array(256);
    for (var i = 0; i < chars.length; i++) {
        lookup[chars.charCodeAt(i)] = i;
    }
    var encode = function (arraybuffer) {
        var bytes = new Uint8Array(arraybuffer), i, len = bytes.length, base64 = '';
        for (i = 0; i < len; i += 3) {
            base64 += chars[bytes[i] >> 2];
            base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];
            base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];
            base64 += chars[bytes[i + 2] & 63];
        }
        if (len % 3 === 2) {
            base64 = base64.substring(0, base64.length - 1) + '=';
        }
        else if (len % 3 === 1) {
            base64 = base64.substring(0, base64.length - 2) + '==';
        }
        return base64;
    };
    var decode = function (base64) {
        var bufferLength = base64.length * 0.75, len = base64.length, i, p = 0, encoded1, encoded2, encoded3, encoded4;
        if (base64[base64.length - 1] === '=') {
            bufferLength--;
            if (base64[base64.length - 2] === '=') {
                bufferLength--;
            }
        }
        var arraybuffer = new ArrayBuffer(bufferLength), bytes = new Uint8Array(arraybuffer);
        for (i = 0; i < len; i += 4) {
            encoded1 = lookup[base64.charCodeAt(i)];
            encoded2 = lookup[base64.charCodeAt(i + 1)];
            encoded3 = lookup[base64.charCodeAt(i + 2)];
            encoded4 = lookup[base64.charCodeAt(i + 3)];
            bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);
            bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);
            bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);
        }
        return arraybuffer;
    };

    exports.decode = decode;
    exports.encode = encode;

    Object.defineProperty(exports, '__esModule', { value: true });

})));


},{}],69:[function(require,module,exports){
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ERROR_PACKET = exports.PACKET_TYPES_REVERSE = exports.PACKET_TYPES = void 0;
const PACKET_TYPES = Object.create(null); // no Map = no polyfill
exports.PACKET_TYPES = PACKET_TYPES;
PACKET_TYPES["open"] = "0";
PACKET_TYPES["close"] = "1";
PACKET_TYPES["ping"] = "2";
PACKET_TYPES["pong"] = "3";
PACKET_TYPES["message"] = "4";
PACKET_TYPES["upgrade"] = "5";
PACKET_TYPES["noop"] = "6";
const PACKET_TYPES_REVERSE = Object.create(null);
exports.PACKET_TYPES_REVERSE = PACKET_TYPES_REVERSE;
Object.keys(PACKET_TYPES).forEach(key => {
    PACKET_TYPES_REVERSE[PACKET_TYPES[key]] = key;
});
const ERROR_PACKET = { type: "error", data: "parser error" };
exports.ERROR_PACKET = ERROR_PACKET;

},{}],70:[function(require,module,exports){
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const commons_js_1 = require("./commons.js");
const base64_arraybuffer_1 = require("base64-arraybuffer");
const withNativeArrayBuffer = typeof ArrayBuffer === "function";
const decodePacket = (encodedPacket, binaryType) => {
    if (typeof encodedPacket !== "string") {
        return {
            type: "message",
            data: mapBinary(encodedPacket, binaryType)
        };
    }
    const type = encodedPacket.charAt(0);
    if (type === "b") {
        return {
            type: "message",
            data: decodeBase64Packet(encodedPacket.substring(1), binaryType)
        };
    }
    const packetType = commons_js_1.PACKET_TYPES_REVERSE[type];
    if (!packetType) {
        return commons_js_1.ERROR_PACKET;
    }
    return encodedPacket.length > 1
        ? {
            type: commons_js_1.PACKET_TYPES_REVERSE[type],
            data: encodedPacket.substring(1)
        }
        : {
            type: commons_js_1.PACKET_TYPES_REVERSE[type]
        };
};
const decodeBase64Packet = (data, binaryType) => {
    if (withNativeArrayBuffer) {
        const decoded = (0, base64_arraybuffer_1.decode)(data);
        return mapBinary(decoded, binaryType);
    }
    else {
        return { base64: true, data }; // fallback for old browsers
    }
};
const mapBinary = (data, binaryType) => {
    switch (binaryType) {
        case "blob":
            return data instanceof ArrayBuffer ? new Blob([data]) : data;
        case "arraybuffer":
        default:
            return data; // assuming the data is already an ArrayBuffer
    }
};
exports.default = decodePacket;

},{"./commons.js":69,"base64-arraybuffer":68}],71:[function(require,module,exports){
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const commons_js_1 = require("./commons.js");
const withNativeBlob = typeof Blob === "function" ||
    (typeof Blob !== "undefined" &&
        Object.prototype.toString.call(Blob) === "[object BlobConstructor]");
const withNativeArrayBuffer = typeof ArrayBuffer === "function";
// ArrayBuffer.isView method is not defined in IE10
const isView = obj => {
    return typeof ArrayBuffer.isView === "function"
        ? ArrayBuffer.isView(obj)
        : obj && obj.buffer instanceof ArrayBuffer;
};
const encodePacket = ({ type, data }, supportsBinary, callback) => {
    if (withNativeBlob && data instanceof Blob) {
        if (supportsBinary) {
            return callback(data);
        }
        else {
            return encodeBlobAsBase64(data, callback);
        }
    }
    else if (withNativeArrayBuffer &&
        (data instanceof ArrayBuffer || isView(data))) {
        if (supportsBinary) {
            return callback(data);
        }
        else {
            return encodeBlobAsBase64(new Blob([data]), callback);
        }
    }
    // plain string
    return callback(commons_js_1.PACKET_TYPES[type] + (data || ""));
};
const encodeBlobAsBase64 = (data, callback) => {
    const fileReader = new FileReader();
    fileReader.onload = function () {
        const content = fileReader.result.split(",")[1];
        callback("b" + content);
    };
    return fileReader.readAsDataURL(data);
};
exports.default = encodePacket;

},{"./commons.js":69}],72:[function(require,module,exports){
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.decodePayload = exports.decodePacket = exports.encodePayload = exports.encodePacket = exports.protocol = void 0;
const encodePacket_js_1 = require("./encodePacket.js");
exports.encodePacket = encodePacket_js_1.default;
const decodePacket_js_1 = require("./decodePacket.js");
exports.decodePacket = decodePacket_js_1.default;
const SEPARATOR = String.fromCharCode(30); // see https://en.wikipedia.org/wiki/Delimiter#ASCII_delimited_text
const encodePayload = (packets, callback) => {
    // some packets may be added to the array while encoding, so the initial length must be saved
    const length = packets.length;
    const encodedPackets = new Array(length);
    let count = 0;
    packets.forEach((packet, i) => {
        // force base64 encoding for binary packets
        (0, encodePacket_js_1.default)(packet, false, encodedPacket => {
            encodedPackets[i] = encodedPacket;
            if (++count === length) {
                callback(encodedPackets.join(SEPARATOR));
            }
        });
    });
};
exports.encodePayload = encodePayload;
const decodePayload = (encodedPayload, binaryType) => {
    const encodedPackets = encodedPayload.split(SEPARATOR);
    const packets = [];
    for (let i = 0; i < encodedPackets.length; i++) {
        const decodedPacket = (0, decodePacket_js_1.default)(encodedPackets[i], binaryType);
        packets.push(decodedPacket);
        if (decodedPacket.type === "error") {
            break;
        }
    }
    return packets;
};
exports.decodePayload = decodePayload;
exports.protocol = 4;

},{"./decodePacket.js":70,"./encodePacket.js":71}],73:[function(require,module,exports){
'use strict';

/**
 * @typedef {{ [key: string]: any }} Extensions
 * @typedef {Error} Err
 * @property {string} message
 */

/**
 *
 * @param {Error} obj
 * @param {Extensions} props
 * @returns {Error & Extensions}
 */
function assign(obj, props) {
    for (const key in props) {
        Object.defineProperty(obj, key, {
            value: props[key],
            enumerable: true,
            configurable: true,
        });
    }

    return obj;
}

/**
 *
 * @param {any} err - An Error
 * @param {string|Extensions} code - A string code or props to set on the error
 * @param {Extensions} [props] - Props to set on the error
 * @returns {Error & Extensions}
 */
function createError(err, code, props) {
    if (!err || typeof err === 'string') {
        throw new TypeError('Please pass an Error to err-code');
    }

    if (!props) {
        props = {};
    }

    if (typeof code === 'object') {
        props = code;
        code = '';
    }

    if (code) {
        props.code = code;
    }

    try {
        return assign(err, props);
    } catch (_) {
        props.message = err.message;
        props.stack = err.stack;

        const ErrClass = function () {};

        ErrClass.prototype = Object.create(Object.getPrototypeOf(err));

        // @ts-ignore
        const output = assign(new ErrClass(), props);

        return output;
    }
}

module.exports = createError;

},{}],74:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

var R = typeof Reflect === 'object' ? Reflect : null
var ReflectApply = R && typeof R.apply === 'function'
  ? R.apply
  : function ReflectApply(target, receiver, args) {
    return Function.prototype.apply.call(target, receiver, args);
  }

var ReflectOwnKeys
if (R && typeof R.ownKeys === 'function') {
  ReflectOwnKeys = R.ownKeys
} else if (Object.getOwnPropertySymbols) {
  ReflectOwnKeys = function ReflectOwnKeys(target) {
    return Object.getOwnPropertyNames(target)
      .concat(Object.getOwnPropertySymbols(target));
  };
} else {
  ReflectOwnKeys = function ReflectOwnKeys(target) {
    return Object.getOwnPropertyNames(target);
  };
}

function ProcessEmitWarning(warning) {
  if (console && console.warn) console.warn(warning);
}

var NumberIsNaN = Number.isNaN || function NumberIsNaN(value) {
  return value !== value;
}

function EventEmitter() {
  EventEmitter.init.call(this);
}
module.exports = EventEmitter;
module.exports.once = once;

// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;

EventEmitter.prototype._events = undefined;
EventEmitter.prototype._eventsCount = 0;
EventEmitter.prototype._maxListeners = undefined;

// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
var defaultMaxListeners = 10;

function checkListener(listener) {
  if (typeof listener !== 'function') {
    throw new TypeError('The "listener" argument must be of type Function. Received type ' + typeof listener);
  }
}

Object.defineProperty(EventEmitter, 'defaultMaxListeners', {
  enumerable: true,
  get: function() {
    return defaultMaxListeners;
  },
  set: function(arg) {
    if (typeof arg !== 'number' || arg < 0 || NumberIsNaN(arg)) {
      throw new RangeError('The value of "defaultMaxListeners" is out of range. It must be a non-negative number. Received ' + arg + '.');
    }
    defaultMaxListeners = arg;
  }
});

EventEmitter.init = function() {

  if (this._events === undefined ||
      this._events === Object.getPrototypeOf(this)._events) {
    this._events = Object.create(null);
    this._eventsCount = 0;
  }

  this._maxListeners = this._maxListeners || undefined;
};

// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function setMaxListeners(n) {
  if (typeof n !== 'number' || n < 0 || NumberIsNaN(n)) {
    throw new RangeError('The value of "n" is out of range. It must be a non-negative number. Received ' + n + '.');
  }
  this._maxListeners = n;
  return this;
};

function _getMaxListeners(that) {
  if (that._maxListeners === undefined)
    return EventEmitter.defaultMaxListeners;
  return that._maxListeners;
}

EventEmitter.prototype.getMaxListeners = function getMaxListeners() {
  return _getMaxListeners(this);
};

EventEmitter.prototype.emit = function emit(type) {
  var args = [];
  for (var i = 1; i < arguments.length; i++) args.push(arguments[i]);
  var doError = (type === 'error');

  var events = this._events;
  if (events !== undefined)
    doError = (doError && events.error === undefined);
  else if (!doError)
    return false;

  // If there is no 'error' event listener then throw.
  if (doError) {
    var er;
    if (args.length > 0)
      er = args[0];
    if (er instanceof Error) {
      // Note: The comments on the `throw` lines are intentional, they show
      // up in Node's output if this results in an unhandled exception.
      throw er; // Unhandled 'error' event
    }
    // At least give some kind of context to the user
    var err = new Error('Unhandled error.' + (er ? ' (' + er.message + ')' : ''));
    err.context = er;
    throw err; // Unhandled 'error' event
  }

  var handler = events[type];

  if (handler === undefined)
    return false;

  if (typeof handler === 'function') {
    ReflectApply(handler, this, args);
  } else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      ReflectApply(listeners[i], this, args);
  }

  return true;
};

function _addListener(target, type, listener, prepend) {
  var m;
  var events;
  var existing;

  checkListener(listener);

  events = target._events;
  if (events === undefined) {
    events = target._events = Object.create(null);
    target._eventsCount = 0;
  } else {
    // To avoid recursion in the case that type === "newListener"! Before
    // adding it to the listeners, first emit "newListener".
    if (events.newListener !== undefined) {
      target.emit('newListener', type,
                  listener.listener ? listener.listener : listener);

      // Re-assign `events` because a newListener handler could have caused the
      // this._events to be assigned to a new object
      events = target._events;
    }
    existing = events[type];
  }

  if (existing === undefined) {
    // Optimize the case of one listener. Don't need the extra array object.
    existing = events[type] = listener;
    ++target._eventsCount;
  } else {
    if (typeof existing === 'function') {
      // Adding the second element, need to change to array.
      existing = events[type] =
        prepend ? [listener, existing] : [existing, listener];
      // If we've already got an array, just append.
    } else if (prepend) {
      existing.unshift(listener);
    } else {
      existing.push(listener);
    }

    // Check for listener leak
    m = _getMaxListeners(target);
    if (m > 0 && existing.length > m && !existing.warned) {
      existing.warned = true;
      // No error code for this since it is a Warning
      // eslint-disable-next-line no-restricted-syntax
      var w = new Error('Possible EventEmitter memory leak detected. ' +
                          existing.length + ' ' + String(type) + ' listeners ' +
                          'added. Use emitter.setMaxListeners() to ' +
                          'increase limit');
      w.name = 'MaxListenersExceededWarning';
      w.emitter = target;
      w.type = type;
      w.count = existing.length;
      ProcessEmitWarning(w);
    }
  }

  return target;
}

EventEmitter.prototype.addListener = function addListener(type, listener) {
  return _addListener(this, type, listener, false);
};

EventEmitter.prototype.on = EventEmitter.prototype.addListener;

EventEmitter.prototype.prependListener =
    function prependListener(type, listener) {
      return _addListener(this, type, listener, true);
    };

function onceWrapper() {
  if (!this.fired) {
    this.target.removeListener(this.type, this.wrapFn);
    this.fired = true;
    if (arguments.length === 0)
      return this.listener.call(this.target);
    return this.listener.apply(this.target, arguments);
  }
}

function _onceWrap(target, type, listener) {
  var state = { fired: false, wrapFn: undefined, target: target, type: type, listener: listener };
  var wrapped = onceWrapper.bind(state);
  wrapped.listener = listener;
  state.wrapFn = wrapped;
  return wrapped;
}

EventEmitter.prototype.once = function once(type, listener) {
  checkListener(listener);
  this.on(type, _onceWrap(this, type, listener));
  return this;
};

EventEmitter.prototype.prependOnceListener =
    function prependOnceListener(type, listener) {
      checkListener(listener);
      this.prependListener(type, _onceWrap(this, type, listener));
      return this;
    };

// Emits a 'removeListener' event if and only if the listener was removed.
EventEmitter.prototype.removeListener =
    function removeListener(type, listener) {
      var list, events, position, i, originalListener;

      checkListener(listener);

      events = this._events;
      if (events === undefined)
        return this;

      list = events[type];
      if (list === undefined)
        return this;

      if (list === listener || list.listener === listener) {
        if (--this._eventsCount === 0)
          this._events = Object.create(null);
        else {
          delete events[type];
          if (events.removeListener)
            this.emit('removeListener', type, list.listener || listener);
        }
      } else if (typeof list !== 'function') {
        position = -1;

        for (i = list.length - 1; i >= 0; i--) {
          if (list[i] === listener || list[i].listener === listener) {
            originalListener = list[i].listener;
            position = i;
            break;
          }
        }

        if (position < 0)
          return this;

        if (position === 0)
          list.shift();
        else {
          spliceOne(list, position);
        }

        if (list.length === 1)
          events[type] = list[0];

        if (events.removeListener !== undefined)
          this.emit('removeListener', type, originalListener || listener);
      }

      return this;
    };

EventEmitter.prototype.off = EventEmitter.prototype.removeListener;

EventEmitter.prototype.removeAllListeners =
    function removeAllListeners(type) {
      var listeners, events, i;

      events = this._events;
      if (events === undefined)
        return this;

      // not listening for removeListener, no need to emit
      if (events.removeListener === undefined) {
        if (arguments.length === 0) {
          this._events = Object.create(null);
          this._eventsCount = 0;
        } else if (events[type] !== undefined) {
          if (--this._eventsCount === 0)
            this._events = Object.create(null);
          else
            delete events[type];
        }
        return this;
      }

      // emit removeListener for all listeners on all events
      if (arguments.length === 0) {
        var keys = Object.keys(events);
        var key;
        for (i = 0; i < keys.length; ++i) {
          key = keys[i];
          if (key === 'removeListener') continue;
          this.removeAllListeners(key);
        }
        this.removeAllListeners('removeListener');
        this._events = Object.create(null);
        this._eventsCount = 0;
        return this;
      }

      listeners = events[type];

      if (typeof listeners === 'function') {
        this.removeListener(type, listeners);
      } else if (listeners !== undefined) {
        // LIFO order
        for (i = listeners.length - 1; i >= 0; i--) {
          this.removeListener(type, listeners[i]);
        }
      }

      return this;
    };

function _listeners(target, type, unwrap) {
  var events = target._events;

  if (events === undefined)
    return [];

  var evlistener = events[type];
  if (evlistener === undefined)
    return [];

  if (typeof evlistener === 'function')
    return unwrap ? [evlistener.listener || evlistener] : [evlistener];

  return unwrap ?
    unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length);
}

EventEmitter.prototype.listeners = function listeners(type) {
  return _listeners(this, type, true);
};

EventEmitter.prototype.rawListeners = function rawListeners(type) {
  return _listeners(this, type, false);
};

EventEmitter.listenerCount = function(emitter, type) {
  if (typeof emitter.listenerCount === 'function') {
    return emitter.listenerCount(type);
  } else {
    return listenerCount.call(emitter, type);
  }
};

EventEmitter.prototype.listenerCount = listenerCount;
function listenerCount(type) {
  var events = this._events;

  if (events !== undefined) {
    var evlistener = events[type];

    if (typeof evlistener === 'function') {
      return 1;
    } else if (evlistener !== undefined) {
      return evlistener.length;
    }
  }

  return 0;
}

EventEmitter.prototype.eventNames = function eventNames() {
  return this._eventsCount > 0 ? ReflectOwnKeys(this._events) : [];
};

function arrayClone(arr, n) {
  var copy = new Array(n);
  for (var i = 0; i < n; ++i)
    copy[i] = arr[i];
  return copy;
}

function spliceOne(list, index) {
  for (; index + 1 < list.length; index++)
    list[index] = list[index + 1];
  list.pop();
}

function unwrapListeners(arr) {
  var ret = new Array(arr.length);
  for (var i = 0; i < ret.length; ++i) {
    ret[i] = arr[i].listener || arr[i];
  }
  return ret;
}

function once(emitter, name) {
  return new Promise(function (resolve, reject) {
    function errorListener(err) {
      emitter.removeListener(name, resolver);
      reject(err);
    }

    function resolver() {
      if (typeof emitter.removeListener === 'function') {
        emitter.removeListener('error', errorListener);
      }
      resolve([].slice.call(arguments));
    };

    eventTargetAgnosticAddListener(emitter, name, resolver, { once: true });
    if (name !== 'error') {
      addErrorHandlerIfEventEmitter(emitter, errorListener, { once: true });
    }
  });
}

function addErrorHandlerIfEventEmitter(emitter, handler, flags) {
  if (typeof emitter.on === 'function') {
    eventTargetAgnosticAddListener(emitter, 'error', handler, flags);
  }
}

function eventTargetAgnosticAddListener(emitter, name, listener, flags) {
  if (typeof emitter.on === 'function') {
    if (flags.once) {
      emitter.once(name, listener);
    } else {
      emitter.on(name, listener);
    }
  } else if (typeof emitter.addEventListener === 'function') {
    // EventTarget does not have `error` event semantics like Node
    // EventEmitters, we do not listen for `error` events here.
    emitter.addEventListener(name, function wrapListener(arg) {
      // IE does not have builtin `{ once: true }` support so we
      // have to do it manually.
      if (flags.once) {
        emitter.removeEventListener(name, wrapListener);
      }
      listener(arg);
    });
  } else {
    throw new TypeError('The "emitter" argument must be of type EventEmitter. Received type ' + typeof emitter);
  }
}

},{}],75:[function(require,module,exports){
module.exports = stringify
stringify.default = stringify
stringify.stable = deterministicStringify
stringify.stableStringify = deterministicStringify

var LIMIT_REPLACE_NODE = '[...]'
var CIRCULAR_REPLACE_NODE = '[Circular]'

var arr = []
var replacerStack = []

function defaultOptions () {
  return {
    depthLimit: Number.MAX_SAFE_INTEGER,
    edgesLimit: Number.MAX_SAFE_INTEGER
  }
}

// Regular stringify
function stringify (obj, replacer, spacer, options) {
  if (typeof options === 'undefined') {
    options = defaultOptions()
  }

  decirc(obj, '', 0, [], undefined, 0, options)
  var res
  try {
    if (replacerStack.length === 0) {
      res = JSON.stringify(obj, replacer, spacer)
    } else {
      res = JSON.stringify(obj, replaceGetterValues(replacer), spacer)
    }
  } catch (_) {
    return JSON.stringify('[unable to serialize, circular reference is too complex to analyze]')
  } finally {
    while (arr.length !== 0) {
      var part = arr.pop()
      if (part.length === 4) {
        Object.defineProperty(part[0], part[1], part[3])
      } else {
        part[0][part[1]] = part[2]
      }
    }
  }
  return res
}

function setReplace (replace, val, k, parent) {
  var propertyDescriptor = Object.getOwnPropertyDescriptor(parent, k)
  if (propertyDescriptor.get !== undefined) {
    if (propertyDescriptor.configurable) {
      Object.defineProperty(parent, k, { value: replace })
      arr.push([parent, k, val, propertyDescriptor])
    } else {
      replacerStack.push([val, k, replace])
    }
  } else {
    parent[k] = replace
    arr.push([parent, k, val])
  }
}

function decirc (val, k, edgeIndex, stack, parent, depth, options) {
  depth += 1
  var i
  if (typeof val === 'object' && val !== null) {
    for (i = 0; i < stack.length; i++) {
      if (stack[i] === val) {
        setReplace(CIRCULAR_REPLACE_NODE, val, k, parent)
        return
      }
    }

    if (
      typeof options.depthLimit !== 'undefined' &&
      depth > options.depthLimit
    ) {
      setReplace(LIMIT_REPLACE_NODE, val, k, parent)
      return
    }

    if (
      typeof options.edgesLimit !== 'undefined' &&
      edgeIndex + 1 > options.edgesLimit
    ) {
      setReplace(LIMIT_REPLACE_NODE, val, k, parent)
      return
    }

    stack.push(val)
    // Optimize for Arrays. Big arrays could kill the performance otherwise!
    if (Array.isArray(val)) {
      for (i = 0; i < val.length; i++) {
        decirc(val[i], i, i, stack, val, depth, options)
      }
    } else {
      var keys = Object.keys(val)
      for (i = 0; i < keys.length; i++) {
        var key = keys[i]
        decirc(val[key], key, i, stack, val, depth, options)
      }
    }
    stack.pop()
  }
}

// Stable-stringify
function compareFunction (a, b) {
  if (a < b) {
    return -1
  }
  if (a > b) {
    return 1
  }
  return 0
}

function deterministicStringify (obj, replacer, spacer, options) {
  if (typeof options === 'undefined') {
    options = defaultOptions()
  }

  var tmp = deterministicDecirc(obj, '', 0, [], undefined, 0, options) || obj
  var res
  try {
    if (replacerStack.length === 0) {
      res = JSON.stringify(tmp, replacer, spacer)
    } else {
      res = JSON.stringify(tmp, replaceGetterValues(replacer), spacer)
    }
  } catch (_) {
    return JSON.stringify('[unable to serialize, circular reference is too complex to analyze]')
  } finally {
    // Ensure that we restore the object as it was.
    while (arr.length !== 0) {
      var part = arr.pop()
      if (part.length === 4) {
        Object.defineProperty(part[0], part[1], part[3])
      } else {
        part[0][part[1]] = part[2]
      }
    }
  }
  return res
}

function deterministicDecirc (val, k, edgeIndex, stack, parent, depth, options) {
  depth += 1
  var i
  if (typeof val === 'object' && val !== null) {
    for (i = 0; i < stack.length; i++) {
      if (stack[i] === val) {
        setReplace(CIRCULAR_REPLACE_NODE, val, k, parent)
        return
      }
    }
    try {
      if (typeof val.toJSON === 'function') {
        return
      }
    } catch (_) {
      return
    }

    if (
      typeof options.depthLimit !== 'undefined' &&
      depth > options.depthLimit
    ) {
      setReplace(LIMIT_REPLACE_NODE, val, k, parent)
      return
    }

    if (
      typeof options.edgesLimit !== 'undefined' &&
      edgeIndex + 1 > options.edgesLimit
    ) {
      setReplace(LIMIT_REPLACE_NODE, val, k, parent)
      return
    }

    stack.push(val)
    // Optimize for Arrays. Big arrays could kill the performance otherwise!
    if (Array.isArray(val)) {
      for (i = 0; i < val.length; i++) {
        deterministicDecirc(val[i], i, i, stack, val, depth, options)
      }
    } else {
      // Create a temporary object in the required way
      var tmp = {}
      var keys = Object.keys(val).sort(compareFunction)
      for (i = 0; i < keys.length; i++) {
        var key = keys[i]
        deterministicDecirc(val[key], key, i, stack, val, depth, options)
        tmp[key] = val[key]
      }
      if (typeof parent !== 'undefined') {
        arr.push([parent, k, val])
        parent[k] = tmp
      } else {
        return tmp
      }
    }
    stack.pop()
  }
}

// wraps replacer function to handle values we couldn't replace
// and mark them as replaced value
function replaceGetterValues (replacer) {
  replacer =
    typeof replacer !== 'undefined'
      ? replacer
      : function (k, v) {
        return v
      }
  return function (key, val) {
    if (replacerStack.length > 0) {
      for (var i = 0; i < replacerStack.length; i++) {
        var part = replacerStack[i]
        if (part[1] === key && part[0] === val) {
          val = part[2]
          replacerStack.splice(i, 1)
          break
        }
      }
    }
    return replacer.call(this, key, val)
  }
}

},{}],76:[function(require,module,exports){
'use strict';

/* eslint no-invalid-this: 1 */

var ERROR_MESSAGE = 'Function.prototype.bind called on incompatible ';
var slice = Array.prototype.slice;
var toStr = Object.prototype.toString;
var funcType = '[object Function]';

module.exports = function bind(that) {
    var target = this;
    if (typeof target !== 'function' || toStr.call(target) !== funcType) {
        throw new TypeError(ERROR_MESSAGE + target);
    }
    var args = slice.call(arguments, 1);

    var bound;
    var binder = function () {
        if (this instanceof bound) {
            var result = target.apply(
                this,
                args.concat(slice.call(arguments))
            );
            if (Object(result) === result) {
                return result;
            }
            return this;
        } else {
            return target.apply(
                that,
                args.concat(slice.call(arguments))
            );
        }
    };

    var boundLength = Math.max(0, target.length - args.length);
    var boundArgs = [];
    for (var i = 0; i < boundLength; i++) {
        boundArgs.push('$' + i);
    }

    bound = Function('binder', 'return function (' + boundArgs.join(',') + '){ return binder.apply(this,arguments); }')(binder);

    if (target.prototype) {
        var Empty = function Empty() {};
        Empty.prototype = target.prototype;
        bound.prototype = new Empty();
        Empty.prototype = null;
    }

    return bound;
};

},{}],77:[function(require,module,exports){
'use strict';

var implementation = require('./implementation');

module.exports = Function.prototype.bind || implementation;

},{"./implementation":76}],78:[function(require,module,exports){
// originally pulled out of simple-peer

module.exports = function getBrowserRTC () {
  if (typeof globalThis === 'undefined') return null
  var wrtc = {
    RTCPeerConnection: globalThis.RTCPeerConnection || globalThis.mozRTCPeerConnection ||
      globalThis.webkitRTCPeerConnection,
    RTCSessionDescription: globalThis.RTCSessionDescription ||
      globalThis.mozRTCSessionDescription || globalThis.webkitRTCSessionDescription,
    RTCIceCandidate: globalThis.RTCIceCandidate || globalThis.mozRTCIceCandidate ||
      globalThis.webkitRTCIceCandidate
  }
  if (!wrtc.RTCPeerConnection) return null
  return wrtc
}

},{}],79:[function(require,module,exports){
'use strict';

var undefined;

var $SyntaxError = SyntaxError;
var $Function = Function;
var $TypeError = TypeError;

// eslint-disable-next-line consistent-return
var getEvalledConstructor = function (expressionSyntax) {
	try {
		return $Function('"use strict"; return (' + expressionSyntax + ').constructor;')();
	} catch (e) {}
};

var $gOPD = Object.getOwnPropertyDescriptor;
if ($gOPD) {
	try {
		$gOPD({}, '');
	} catch (e) {
		$gOPD = null; // this is IE 8, which has a broken gOPD
	}
}

var throwTypeError = function () {
	throw new $TypeError();
};
var ThrowTypeError = $gOPD
	? (function () {
		try {
			// eslint-disable-next-line no-unused-expressions, no-caller, no-restricted-properties
			arguments.callee; // IE 8 does not throw here
			return throwTypeError;
		} catch (calleeThrows) {
			try {
				// IE 8 throws on Object.getOwnPropertyDescriptor(arguments, '')
				return $gOPD(arguments, 'callee').get;
			} catch (gOPDthrows) {
				return throwTypeError;
			}
		}
	}())
	: throwTypeError;

var hasSymbols = require('has-symbols')();

var getProto = Object.getPrototypeOf || function (x) { return x.__proto__; }; // eslint-disable-line no-proto

var needsEval = {};

var TypedArray = typeof Uint8Array === 'undefined' ? undefined : getProto(Uint8Array);

var INTRINSICS = {
	'%AggregateError%': typeof AggregateError === 'undefined' ? undefined : AggregateError,
	'%Array%': Array,
	'%ArrayBuffer%': typeof ArrayBuffer === 'undefined' ? undefined : ArrayBuffer,
	'%ArrayIteratorPrototype%': hasSymbols ? getProto([][Symbol.iterator]()) : undefined,
	'%AsyncFromSyncIteratorPrototype%': undefined,
	'%AsyncFunction%': needsEval,
	'%AsyncGenerator%': needsEval,
	'%AsyncGeneratorFunction%': needsEval,
	'%AsyncIteratorPrototype%': needsEval,
	'%Atomics%': typeof Atomics === 'undefined' ? undefined : Atomics,
	'%BigInt%': typeof BigInt === 'undefined' ? undefined : BigInt,
	'%Boolean%': Boolean,
	'%DataView%': typeof DataView === 'undefined' ? undefined : DataView,
	'%Date%': Date,
	'%decodeURI%': decodeURI,
	'%decodeURIComponent%': decodeURIComponent,
	'%encodeURI%': encodeURI,
	'%encodeURIComponent%': encodeURIComponent,
	'%Error%': Error,
	'%eval%': eval, // eslint-disable-line no-eval
	'%EvalError%': EvalError,
	'%Float32Array%': typeof Float32Array === 'undefined' ? undefined : Float32Array,
	'%Float64Array%': typeof Float64Array === 'undefined' ? undefined : Float64Array,
	'%FinalizationRegistry%': typeof FinalizationRegistry === 'undefined' ? undefined : FinalizationRegistry,
	'%Function%': $Function,
	'%GeneratorFunction%': needsEval,
	'%Int8Array%': typeof Int8Array === 'undefined' ? undefined : Int8Array,
	'%Int16Array%': typeof Int16Array === 'undefined' ? undefined : Int16Array,
	'%Int32Array%': typeof Int32Array === 'undefined' ? undefined : Int32Array,
	'%isFinite%': isFinite,
	'%isNaN%': isNaN,
	'%IteratorPrototype%': hasSymbols ? getProto(getProto([][Symbol.iterator]())) : undefined,
	'%JSON%': typeof JSON === 'object' ? JSON : undefined,
	'%Map%': typeof Map === 'undefined' ? undefined : Map,
	'%MapIteratorPrototype%': typeof Map === 'undefined' || !hasSymbols ? undefined : getProto(new Map()[Symbol.iterator]()),
	'%Math%': Math,
	'%Number%': Number,
	'%Object%': Object,
	'%parseFloat%': parseFloat,
	'%parseInt%': parseInt,
	'%Promise%': typeof Promise === 'undefined' ? undefined : Promise,
	'%Proxy%': typeof Proxy === 'undefined' ? undefined : Proxy,
	'%RangeError%': RangeError,
	'%ReferenceError%': ReferenceError,
	'%Reflect%': typeof Reflect === 'undefined' ? undefined : Reflect,
	'%RegExp%': RegExp,
	'%Set%': typeof Set === 'undefined' ? undefined : Set,
	'%SetIteratorPrototype%': typeof Set === 'undefined' || !hasSymbols ? undefined : getProto(new Set()[Symbol.iterator]()),
	'%SharedArrayBuffer%': typeof SharedArrayBuffer === 'undefined' ? undefined : SharedArrayBuffer,
	'%String%': String,
	'%StringIteratorPrototype%': hasSymbols ? getProto(''[Symbol.iterator]()) : undefined,
	'%Symbol%': hasSymbols ? Symbol : undefined,
	'%SyntaxError%': $SyntaxError,
	'%ThrowTypeError%': ThrowTypeError,
	'%TypedArray%': TypedArray,
	'%TypeError%': $TypeError,
	'%Uint8Array%': typeof Uint8Array === 'undefined' ? undefined : Uint8Array,
	'%Uint8ClampedArray%': typeof Uint8ClampedArray === 'undefined' ? undefined : Uint8ClampedArray,
	'%Uint16Array%': typeof Uint16Array === 'undefined' ? undefined : Uint16Array,
	'%Uint32Array%': typeof Uint32Array === 'undefined' ? undefined : Uint32Array,
	'%URIError%': URIError,
	'%WeakMap%': typeof WeakMap === 'undefined' ? undefined : WeakMap,
	'%WeakRef%': typeof WeakRef === 'undefined' ? undefined : WeakRef,
	'%WeakSet%': typeof WeakSet === 'undefined' ? undefined : WeakSet
};

var doEval = function doEval(name) {
	var value;
	if (name === '%AsyncFunction%') {
		value = getEvalledConstructor('async function () {}');
	} else if (name === '%GeneratorFunction%') {
		value = getEvalledConstructor('function* () {}');
	} else if (name === '%AsyncGeneratorFunction%') {
		value = getEvalledConstructor('async function* () {}');
	} else if (name === '%AsyncGenerator%') {
		var fn = doEval('%AsyncGeneratorFunction%');
		if (fn) {
			value = fn.prototype;
		}
	} else if (name === '%AsyncIteratorPrototype%') {
		var gen = doEval('%AsyncGenerator%');
		if (gen) {
			value = getProto(gen.prototype);
		}
	}

	INTRINSICS[name] = value;

	return value;
};

var LEGACY_ALIASES = {
	'%ArrayBufferPrototype%': ['ArrayBuffer', 'prototype'],
	'%ArrayPrototype%': ['Array', 'prototype'],
	'%ArrayProto_entries%': ['Array', 'prototype', 'entries'],
	'%ArrayProto_forEach%': ['Array', 'prototype', 'forEach'],
	'%ArrayProto_keys%': ['Array', 'prototype', 'keys'],
	'%ArrayProto_values%': ['Array', 'prototype', 'values'],
	'%AsyncFunctionPrototype%': ['AsyncFunction', 'prototype'],
	'%AsyncGenerator%': ['AsyncGeneratorFunction', 'prototype'],
	'%AsyncGeneratorPrototype%': ['AsyncGeneratorFunction', 'prototype', 'prototype'],
	'%BooleanPrototype%': ['Boolean', 'prototype'],
	'%DataViewPrototype%': ['DataView', 'prototype'],
	'%DatePrototype%': ['Date', 'prototype'],
	'%ErrorPrototype%': ['Error', 'prototype'],
	'%EvalErrorPrototype%': ['EvalError', 'prototype'],
	'%Float32ArrayPrototype%': ['Float32Array', 'prototype'],
	'%Float64ArrayPrototype%': ['Float64Array', 'prototype'],
	'%FunctionPrototype%': ['Function', 'prototype'],
	'%Generator%': ['GeneratorFunction', 'prototype'],
	'%GeneratorPrototype%': ['GeneratorFunction', 'prototype', 'prototype'],
	'%Int8ArrayPrototype%': ['Int8Array', 'prototype'],
	'%Int16ArrayPrototype%': ['Int16Array', 'prototype'],
	'%Int32ArrayPrototype%': ['Int32Array', 'prototype'],
	'%JSONParse%': ['JSON', 'parse'],
	'%JSONStringify%': ['JSON', 'stringify'],
	'%MapPrototype%': ['Map', 'prototype'],
	'%NumberPrototype%': ['Number', 'prototype'],
	'%ObjectPrototype%': ['Object', 'prototype'],
	'%ObjProto_toString%': ['Object', 'prototype', 'toString'],
	'%ObjProto_valueOf%': ['Object', 'prototype', 'valueOf'],
	'%PromisePrototype%': ['Promise', 'prototype'],
	'%PromiseProto_then%': ['Promise', 'prototype', 'then'],
	'%Promise_all%': ['Promise', 'all'],
	'%Promise_reject%': ['Promise', 'reject'],
	'%Promise_resolve%': ['Promise', 'resolve'],
	'%RangeErrorPrototype%': ['RangeError', 'prototype'],
	'%ReferenceErrorPrototype%': ['ReferenceError', 'prototype'],
	'%RegExpPrototype%': ['RegExp', 'prototype'],
	'%SetPrototype%': ['Set', 'prototype'],
	'%SharedArrayBufferPrototype%': ['SharedArrayBuffer', 'prototype'],
	'%StringPrototype%': ['String', 'prototype'],
	'%SymbolPrototype%': ['Symbol', 'prototype'],
	'%SyntaxErrorPrototype%': ['SyntaxError', 'prototype'],
	'%TypedArrayPrototype%': ['TypedArray', 'prototype'],
	'%TypeErrorPrototype%': ['TypeError', 'prototype'],
	'%Uint8ArrayPrototype%': ['Uint8Array', 'prototype'],
	'%Uint8ClampedArrayPrototype%': ['Uint8ClampedArray', 'prototype'],
	'%Uint16ArrayPrototype%': ['Uint16Array', 'prototype'],
	'%Uint32ArrayPrototype%': ['Uint32Array', 'prototype'],
	'%URIErrorPrototype%': ['URIError', 'prototype'],
	'%WeakMapPrototype%': ['WeakMap', 'prototype'],
	'%WeakSetPrototype%': ['WeakSet', 'prototype']
};

var bind = require('function-bind');
var hasOwn = require('has');
var $concat = bind.call(Function.call, Array.prototype.concat);
var $spliceApply = bind.call(Function.apply, Array.prototype.splice);
var $replace = bind.call(Function.call, String.prototype.replace);
var $strSlice = bind.call(Function.call, String.prototype.slice);

/* adapted from https://github.com/lodash/lodash/blob/4.17.15/dist/lodash.js#L6735-L6744 */
var rePropName = /[^%.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|%$))/g;
var reEscapeChar = /\\(\\)?/g; /** Used to match backslashes in property paths. */
var stringToPath = function stringToPath(string) {
	var first = $strSlice(string, 0, 1);
	var last = $strSlice(string, -1);
	if (first === '%' && last !== '%') {
		throw new $SyntaxError('invalid intrinsic syntax, expected closing `%`');
	} else if (last === '%' && first !== '%') {
		throw new $SyntaxError('invalid intrinsic syntax, expected opening `%`');
	}
	var result = [];
	$replace(string, rePropName, function (match, number, quote, subString) {
		result[result.length] = quote ? $replace(subString, reEscapeChar, '$1') : number || match;
	});
	return result;
};
/* end adaptation */

var getBaseIntrinsic = function getBaseIntrinsic(name, allowMissing) {
	var intrinsicName = name;
	var alias;
	if (hasOwn(LEGACY_ALIASES, intrinsicName)) {
		alias = LEGACY_ALIASES[intrinsicName];
		intrinsicName = '%' + alias[0] + '%';
	}

	if (hasOwn(INTRINSICS, intrinsicName)) {
		var value = INTRINSICS[intrinsicName];
		if (value === needsEval) {
			value = doEval(intrinsicName);
		}
		if (typeof value === 'undefined' && !allowMissing) {
			throw new $TypeError('intrinsic ' + name + ' exists, but is not available. Please file an issue!');
		}

		return {
			alias: alias,
			name: intrinsicName,
			value: value
		};
	}

	throw new $SyntaxError('intrinsic ' + name + ' does not exist!');
};

module.exports = function GetIntrinsic(name, allowMissing) {
	if (typeof name !== 'string' || name.length === 0) {
		throw new $TypeError('intrinsic name must be a non-empty string');
	}
	if (arguments.length > 1 && typeof allowMissing !== 'boolean') {
		throw new $TypeError('"allowMissing" argument must be a boolean');
	}

	var parts = stringToPath(name);
	var intrinsicBaseName = parts.length > 0 ? parts[0] : '';

	var intrinsic = getBaseIntrinsic('%' + intrinsicBaseName + '%', allowMissing);
	var intrinsicRealName = intrinsic.name;
	var value = intrinsic.value;
	var skipFurtherCaching = false;

	var alias = intrinsic.alias;
	if (alias) {
		intrinsicBaseName = alias[0];
		$spliceApply(parts, $concat([0, 1], alias));
	}

	for (var i = 1, isOwn = true; i < parts.length; i += 1) {
		var part = parts[i];
		var first = $strSlice(part, 0, 1);
		var last = $strSlice(part, -1);
		if (
			(
				(first === '"' || first === "'" || first === '`')
				|| (last === '"' || last === "'" || last === '`')
			)
			&& first !== last
		) {
			throw new $SyntaxError('property names with quotes must have matching quotes');
		}
		if (part === 'constructor' || !isOwn) {
			skipFurtherCaching = true;
		}

		intrinsicBaseName += '.' + part;
		intrinsicRealName = '%' + intrinsicBaseName + '%';

		if (hasOwn(INTRINSICS, intrinsicRealName)) {
			value = INTRINSICS[intrinsicRealName];
		} else if (value != null) {
			if (!(part in value)) {
				if (!allowMissing) {
					throw new $TypeError('base intrinsic for ' + name + ' exists, but the property is not available.');
				}
				return void undefined;
			}
			if ($gOPD && (i + 1) >= parts.length) {
				var desc = $gOPD(value, part);
				isOwn = !!desc;

				// By convention, when a data property is converted to an accessor
				// property to emulate a data property that does not suffer from
				// the override mistake, that accessor's getter is marked with
				// an `originalValue` property. Here, when we detect this, we
				// uphold the illusion by pretending to see that original data
				// property, i.e., returning the value rather than the getter
				// itself.
				if (isOwn && 'get' in desc && !('originalValue' in desc.get)) {
					value = desc.get;
				} else {
					value = value[part];
				}
			} else {
				isOwn = hasOwn(value, part);
				value = value[part];
			}

			if (isOwn && !skipFurtherCaching) {
				INTRINSICS[intrinsicRealName] = value;
			}
		}
	}
	return value;
};

},{"function-bind":77,"has":83,"has-symbols":81}],80:[function(require,module,exports){

/**
 * Module exports.
 *
 * Logic borrowed from Modernizr:
 *
 *   - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js
 */

try {
  module.exports = typeof XMLHttpRequest !== 'undefined' &&
    'withCredentials' in new XMLHttpRequest();
} catch (err) {
  // if XMLHttp support is disabled in IE then it will throw
  // when trying to create
  module.exports = false;
}

},{}],81:[function(require,module,exports){
'use strict';

var origSymbol = typeof Symbol !== 'undefined' && Symbol;
var hasSymbolSham = require('./shams');

module.exports = function hasNativeSymbols() {
	if (typeof origSymbol !== 'function') { return false; }
	if (typeof Symbol !== 'function') { return false; }
	if (typeof origSymbol('foo') !== 'symbol') { return false; }
	if (typeof Symbol('bar') !== 'symbol') { return false; }

	return hasSymbolSham();
};

},{"./shams":82}],82:[function(require,module,exports){
'use strict';

/* eslint complexity: [2, 18], max-statements: [2, 33] */
module.exports = function hasSymbols() {
	if (typeof Symbol !== 'function' || typeof Object.getOwnPropertySymbols !== 'function') { return false; }
	if (typeof Symbol.iterator === 'symbol') { return true; }

	var obj = {};
	var sym = Symbol('test');
	var symObj = Object(sym);
	if (typeof sym === 'string') { return false; }

	if (Object.prototype.toString.call(sym) !== '[object Symbol]') { return false; }
	if (Object.prototype.toString.call(symObj) !== '[object Symbol]') { return false; }

	// temp disabled per https://github.com/ljharb/object.assign/issues/17
	// if (sym instanceof Symbol) { return false; }
	// temp disabled per https://github.com/WebReflection/get-own-property-symbols/issues/4
	// if (!(symObj instanceof Symbol)) { return false; }

	// if (typeof Symbol.prototype.toString !== 'function') { return false; }
	// if (String(sym) !== Symbol.prototype.toString.call(sym)) { return false; }

	var symVal = 42;
	obj[sym] = symVal;
	for (sym in obj) { return false; } // eslint-disable-line no-restricted-syntax, no-unreachable-loop
	if (typeof Object.keys === 'function' && Object.keys(obj).length !== 0) { return false; }

	if (typeof Object.getOwnPropertyNames === 'function' && Object.getOwnPropertyNames(obj).length !== 0) { return false; }

	var syms = Object.getOwnPropertySymbols(obj);
	if (syms.length !== 1 || syms[0] !== sym) { return false; }

	if (!Object.prototype.propertyIsEnumerable.call(obj, sym)) { return false; }

	if (typeof Object.getOwnPropertyDescriptor === 'function') {
		var descriptor = Object.getOwnPropertyDescriptor(obj, sym);
		if (descriptor.value !== symVal || descriptor.enumerable !== true) { return false; }
	}

	return true;
};

},{}],83:[function(require,module,exports){
'use strict';

var bind = require('function-bind');

module.exports = bind.call(Function.call, Object.prototype.hasOwnProperty);

},{"function-bind":77}],84:[function(require,module,exports){
/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */
exports.read = function (buffer, offset, isLE, mLen, nBytes) {
  var e, m
  var eLen = (nBytes * 8) - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var nBits = -7
  var i = isLE ? (nBytes - 1) : 0
  var d = isLE ? -1 : 1
  var s = buffer[offset + i]

  i += d

  e = s & ((1 << (-nBits)) - 1)
  s >>= (-nBits)
  nBits += eLen
  for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}

  m = e & ((1 << (-nBits)) - 1)
  e >>= (-nBits)
  nBits += mLen
  for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}

  if (e === 0) {
    e = 1 - eBias
  } else if (e === eMax) {
    return m ? NaN : ((s ? -1 : 1) * Infinity)
  } else {
    m = m + Math.pow(2, mLen)
    e = e - eBias
  }
  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
}

exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
  var e, m, c
  var eLen = (nBytes * 8) - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
  var i = isLE ? 0 : (nBytes - 1)
  var d = isLE ? 1 : -1
  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0

  value = Math.abs(value)

  if (isNaN(value) || value === Infinity) {
    m = isNaN(value) ? 1 : 0
    e = eMax
  } else {
    e = Math.floor(Math.log(value) / Math.LN2)
    if (value * (c = Math.pow(2, -e)) < 1) {
      e--
      c *= 2
    }
    if (e + eBias >= 1) {
      value += rt / c
    } else {
      value += rt * Math.pow(2, 1 - eBias)
    }
    if (value * c >= 2) {
      e++
      c /= 2
    }

    if (e + eBias >= eMax) {
      m = 0
      e = eMax
    } else if (e + eBias >= 1) {
      m = ((value * c) - 1) * Math.pow(2, mLen)
      e = e + eBias
    } else {
      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
      e = 0
    }
  }

  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}

  e = (e << mLen) | m
  eLen += mLen
  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}

  buffer[offset + i - d] |= s * 128
}

},{}],85:[function(require,module,exports){
if (typeof Object.create === 'function') {
  // implementation from standard node.js 'util' module
  module.exports = function inherits(ctor, superCtor) {
    if (superCtor) {
      ctor.super_ = superCtor
      ctor.prototype = Object.create(superCtor.prototype, {
        constructor: {
          value: ctor,
          enumerable: false,
          writable: true,
          configurable: true
        }
      })
    }
  };
} else {
  // old school shim for old browsers
  module.exports = function inherits(ctor, superCtor) {
    if (superCtor) {
      ctor.super_ = superCtor
      var TempCtor = function () {}
      TempCtor.prototype = superCtor.prototype
      ctor.prototype = new TempCtor()
      ctor.prototype.constructor = ctor
    }
  }
}

},{}],86:[function(require,module,exports){
/*jshint node:true */
/* globals define */
/*
  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.

*/

'use strict';

/**
The following batches are equivalent:

var beautify_js = require('js-beautify');
var beautify_js = require('js-beautify').js;
var beautify_js = require('js-beautify').js_beautify;

var beautify_css = require('js-beautify').css;
var beautify_css = require('js-beautify').css_beautify;

var beautify_html = require('js-beautify').html;
var beautify_html = require('js-beautify').html_beautify;

All methods returned accept two arguments, the source string and an options object.
**/

function get_beautify(js_beautify, css_beautify, html_beautify) {
  // the default is js
  var beautify = function(src, config) {
    return js_beautify.js_beautify(src, config);
  };

  // short aliases
  beautify.js = js_beautify.js_beautify;
  beautify.css = css_beautify.css_beautify;
  beautify.html = html_beautify.html_beautify;

  // legacy aliases
  beautify.js_beautify = js_beautify.js_beautify;
  beautify.css_beautify = css_beautify.css_beautify;
  beautify.html_beautify = html_beautify.html_beautify;

  return beautify;
}

if (typeof define === "function" && define.amd) {
  // Add support for AMD ( https://github.com/amdjs/amdjs-api/wiki/AMD#defineamd-property- )
  define([
    "./lib/beautify",
    "./lib/beautify-css",
    "./lib/beautify-html"
  ], function(js_beautify, css_beautify, html_beautify) {
    return get_beautify(js_beautify, css_beautify, html_beautify);
  });
} else {
  (function(mod) {
    var beautifier = require('./src/index');
    beautifier.js_beautify = beautifier.js;
    beautifier.css_beautify = beautifier.css;
    beautifier.html_beautify = beautifier.html;

    mod.exports = get_beautify(beautifier, beautifier, beautifier);

  })(module);
}
},{"./src/index":104}],87:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

function Directives(start_block_pattern, end_block_pattern) {
  start_block_pattern = typeof start_block_pattern === 'string' ? start_block_pattern : start_block_pattern.source;
  end_block_pattern = typeof end_block_pattern === 'string' ? end_block_pattern : end_block_pattern.source;
  this.__directives_block_pattern = new RegExp(start_block_pattern + / beautify( \w+[:]\w+)+ /.source + end_block_pattern, 'g');
  this.__directive_pattern = / (\w+)[:](\w+)/g;

  this.__directives_end_ignore_pattern = new RegExp(start_block_pattern + /\sbeautify\signore:end\s/.source + end_block_pattern, 'g');
}

Directives.prototype.get_directives = function(text) {
  if (!text.match(this.__directives_block_pattern)) {
    return null;
  }

  var directives = {};
  this.__directive_pattern.lastIndex = 0;
  var directive_match = this.__directive_pattern.exec(text);

  while (directive_match) {
    directives[directive_match[1]] = directive_match[2];
    directive_match = this.__directive_pattern.exec(text);
  }

  return directives;
};

Directives.prototype.readIgnored = function(input) {
  return input.readUntilAfter(this.__directives_end_ignore_pattern);
};


module.exports.Directives = Directives;

},{}],88:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

var regexp_has_sticky = RegExp.prototype.hasOwnProperty('sticky');

function InputScanner(input_string) {
  this.__input = input_string || '';
  this.__input_length = this.__input.length;
  this.__position = 0;
}

InputScanner.prototype.restart = function() {
  this.__position = 0;
};

InputScanner.prototype.back = function() {
  if (this.__position > 0) {
    this.__position -= 1;
  }
};

InputScanner.prototype.hasNext = function() {
  return this.__position < this.__input_length;
};

InputScanner.prototype.next = function() {
  var val = null;
  if (this.hasNext()) {
    val = this.__input.charAt(this.__position);
    this.__position += 1;
  }
  return val;
};

InputScanner.prototype.peek = function(index) {
  var val = null;
  index = index || 0;
  index += this.__position;
  if (index >= 0 && index < this.__input_length) {
    val = this.__input.charAt(index);
  }
  return val;
};

// This is a JavaScript only helper function (not in python)
// Javascript doesn't have a match method
// and not all implementation support "sticky" flag.
// If they do not support sticky then both this.match() and this.test() method
// must get the match and check the index of the match.
// If sticky is supported and set, this method will use it.
// Otherwise it will check that global is set, and fall back to the slower method.
InputScanner.prototype.__match = function(pattern, index) {
  pattern.lastIndex = index;
  var pattern_match = pattern.exec(this.__input);

  if (pattern_match && !(regexp_has_sticky && pattern.sticky)) {
    if (pattern_match.index !== index) {
      pattern_match = null;
    }
  }

  return pattern_match;
};

InputScanner.prototype.test = function(pattern, index) {
  index = index || 0;
  index += this.__position;

  if (index >= 0 && index < this.__input_length) {
    return !!this.__match(pattern, index);
  } else {
    return false;
  }
};

InputScanner.prototype.testChar = function(pattern, index) {
  // test one character regex match
  var val = this.peek(index);
  pattern.lastIndex = 0;
  return val !== null && pattern.test(val);
};

InputScanner.prototype.match = function(pattern) {
  var pattern_match = this.__match(pattern, this.__position);
  if (pattern_match) {
    this.__position += pattern_match[0].length;
  } else {
    pattern_match = null;
  }
  return pattern_match;
};

InputScanner.prototype.read = function(starting_pattern, until_pattern, until_after) {
  var val = '';
  var match;
  if (starting_pattern) {
    match = this.match(starting_pattern);
    if (match) {
      val += match[0];
    }
  }
  if (until_pattern && (match || !starting_pattern)) {
    val += this.readUntil(until_pattern, until_after);
  }
  return val;
};

InputScanner.prototype.readUntil = function(pattern, until_after) {
  var val = '';
  var match_index = this.__position;
  pattern.lastIndex = this.__position;
  var pattern_match = pattern.exec(this.__input);
  if (pattern_match) {
    match_index = pattern_match.index;
    if (until_after) {
      match_index += pattern_match[0].length;
    }
  } else {
    match_index = this.__input_length;
  }

  val = this.__input.substring(this.__position, match_index);
  this.__position = match_index;
  return val;
};

InputScanner.prototype.readUntilAfter = function(pattern) {
  return this.readUntil(pattern, true);
};

InputScanner.prototype.get_regexp = function(pattern, match_from) {
  var result = null;
  var flags = 'g';
  if (match_from && regexp_has_sticky) {
    flags = 'y';
  }
  // strings are converted to regexp
  if (typeof pattern === "string" && pattern !== '') {
    // result = new RegExp(pattern.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&'), flags);
    result = new RegExp(pattern, flags);
  } else if (pattern) {
    result = new RegExp(pattern.source, flags);
  }
  return result;
};

InputScanner.prototype.get_literal_regexp = function(literal_string) {
  return RegExp(literal_string.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&'));
};

/* css beautifier legacy helpers */
InputScanner.prototype.peekUntilAfter = function(pattern) {
  var start = this.__position;
  var val = this.readUntilAfter(pattern);
  this.__position = start;
  return val;
};

InputScanner.prototype.lookBack = function(testVal) {
  var start = this.__position - 1;
  return start >= testVal.length && this.__input.substring(start - testVal.length, start)
    .toLowerCase() === testVal;
};

module.exports.InputScanner = InputScanner;

},{}],89:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

function Options(options, merge_child_field) {
  this.raw_options = _mergeOpts(options, merge_child_field);

  // Support passing the source text back with no change
  this.disabled = this._get_boolean('disabled');

  this.eol = this._get_characters('eol', 'auto');
  this.end_with_newline = this._get_boolean('end_with_newline');
  this.indent_size = this._get_number('indent_size', 4);
  this.indent_char = this._get_characters('indent_char', ' ');
  this.indent_level = this._get_number('indent_level');

  this.preserve_newlines = this._get_boolean('preserve_newlines', true);
  this.max_preserve_newlines = this._get_number('max_preserve_newlines', 32786);
  if (!this.preserve_newlines) {
    this.max_preserve_newlines = 0;
  }

  this.indent_with_tabs = this._get_boolean('indent_with_tabs', this.indent_char === '\t');
  if (this.indent_with_tabs) {
    this.indent_char = '\t';

    // indent_size behavior changed after 1.8.6
    // It used to be that indent_size would be
    // set to 1 for indent_with_tabs. That is no longer needed and
    // actually doesn't make sense - why not use spaces? Further,
    // that might produce unexpected behavior - tabs being used
    // for single-column alignment. So, when indent_with_tabs is true
    // and indent_size is 1, reset indent_size to 4.
    if (this.indent_size === 1) {
      this.indent_size = 4;
    }
  }

  // Backwards compat with 1.3.x
  this.wrap_line_length = this._get_number('wrap_line_length', this._get_number('max_char'));

  this.indent_empty_lines = this._get_boolean('indent_empty_lines');

  // valid templating languages ['django', 'erb', 'handlebars', 'php', 'smarty']
  // For now, 'auto' = all off for javascript, all on for html (and inline javascript).
  // other values ignored
  this.templating = this._get_selection_list('templating', ['auto', 'none', 'django', 'erb', 'handlebars', 'php', 'smarty'], ['auto']);
}

Options.prototype._get_array = function(name, default_value) {
  var option_value = this.raw_options[name];
  var result = default_value || [];
  if (typeof option_value === 'object') {
    if (option_value !== null && typeof option_value.concat === 'function') {
      result = option_value.concat();
    }
  } else if (typeof option_value === 'string') {
    result = option_value.split(/[^a-zA-Z0-9_\/\-]+/);
  }
  return result;
};

Options.prototype._get_boolean = function(name, default_value) {
  var option_value = this.raw_options[name];
  var result = option_value === undefined ? !!default_value : !!option_value;
  return result;
};

Options.prototype._get_characters = function(name, default_value) {
  var option_value = this.raw_options[name];
  var result = default_value || '';
  if (typeof option_value === 'string') {
    result = option_value.replace(/\\r/, '\r').replace(/\\n/, '\n').replace(/\\t/, '\t');
  }
  return result;
};

Options.prototype._get_number = function(name, default_value) {
  var option_value = this.raw_options[name];
  default_value = parseInt(default_value, 10);
  if (isNaN(default_value)) {
    default_value = 0;
  }
  var result = parseInt(option_value, 10);
  if (isNaN(result)) {
    result = default_value;
  }
  return result;
};

Options.prototype._get_selection = function(name, selection_list, default_value) {
  var result = this._get_selection_list(name, selection_list, default_value);
  if (result.length !== 1) {
    throw new Error(
      "Invalid Option Value: The option '" + name + "' can only be one of the following values:\n" +
      selection_list + "\nYou passed in: '" + this.raw_options[name] + "'");
  }

  return result[0];
};


Options.prototype._get_selection_list = function(name, selection_list, default_value) {
  if (!selection_list || selection_list.length === 0) {
    throw new Error("Selection list cannot be empty.");
  }

  default_value = default_value || [selection_list[0]];
  if (!this._is_valid_selection(default_value, selection_list)) {
    throw new Error("Invalid Default Value!");
  }

  var result = this._get_array(name, default_value);
  if (!this._is_valid_selection(result, selection_list)) {
    throw new Error(
      "Invalid Option Value: The option '" + name + "' can contain only the following values:\n" +
      selection_list + "\nYou passed in: '" + this.raw_options[name] + "'");
  }

  return result;
};

Options.prototype._is_valid_selection = function(result, selection_list) {
  return result.length && selection_list.length &&
    !result.some(function(item) { return selection_list.indexOf(item) === -1; });
};


// merges child options up with the parent options object
// Example: obj = {a: 1, b: {a: 2}}
//          mergeOpts(obj, 'b')
//
//          Returns: {a: 2}
function _mergeOpts(allOptions, childFieldName) {
  var finalOpts = {};
  allOptions = _normalizeOpts(allOptions);
  var name;

  for (name in allOptions) {
    if (name !== childFieldName) {
      finalOpts[name] = allOptions[name];
    }
  }

  //merge in the per type settings for the childFieldName
  if (childFieldName && allOptions[childFieldName]) {
    for (name in allOptions[childFieldName]) {
      finalOpts[name] = allOptions[childFieldName][name];
    }
  }
  return finalOpts;
}

function _normalizeOpts(options) {
  var convertedOpts = {};
  var key;

  for (key in options) {
    var newKey = key.replace(/-/g, "_");
    convertedOpts[newKey] = options[key];
  }
  return convertedOpts;
}

module.exports.Options = Options;
module.exports.normalizeOpts = _normalizeOpts;
module.exports.mergeOpts = _mergeOpts;

},{}],90:[function(require,module,exports){
/*jshint node:true */
/*
  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

function OutputLine(parent) {
  this.__parent = parent;
  this.__character_count = 0;
  // use indent_count as a marker for this.__lines that have preserved indentation
  this.__indent_count = -1;
  this.__alignment_count = 0;
  this.__wrap_point_index = 0;
  this.__wrap_point_character_count = 0;
  this.__wrap_point_indent_count = -1;
  this.__wrap_point_alignment_count = 0;

  this.__items = [];
}

OutputLine.prototype.clone_empty = function() {
  var line = new OutputLine(this.__parent);
  line.set_indent(this.__indent_count, this.__alignment_count);
  return line;
};

OutputLine.prototype.item = function(index) {
  if (index < 0) {
    return this.__items[this.__items.length + index];
  } else {
    return this.__items[index];
  }
};

OutputLine.prototype.has_match = function(pattern) {
  for (var lastCheckedOutput = this.__items.length - 1; lastCheckedOutput >= 0; lastCheckedOutput--) {
    if (this.__items[lastCheckedOutput].match(pattern)) {
      return true;
    }
  }
  return false;
};

OutputLine.prototype.set_indent = function(indent, alignment) {
  if (this.is_empty()) {
    this.__indent_count = indent || 0;
    this.__alignment_count = alignment || 0;
    this.__character_count = this.__parent.get_indent_size(this.__indent_count, this.__alignment_count);
  }
};

OutputLine.prototype._set_wrap_point = function() {
  if (this.__parent.wrap_line_length) {
    this.__wrap_point_index = this.__items.length;
    this.__wrap_point_character_count = this.__character_count;
    this.__wrap_point_indent_count = this.__parent.next_line.__indent_count;
    this.__wrap_point_alignment_count = this.__parent.next_line.__alignment_count;
  }
};

OutputLine.prototype._should_wrap = function() {
  return this.__wrap_point_index &&
    this.__character_count > this.__parent.wrap_line_length &&
    this.__wrap_point_character_count > this.__parent.next_line.__character_count;
};

OutputLine.prototype._allow_wrap = function() {
  if (this._should_wrap()) {
    this.__parent.add_new_line();
    var next = this.__parent.current_line;
    next.set_indent(this.__wrap_point_indent_count, this.__wrap_point_alignment_count);
    next.__items = this.__items.slice(this.__wrap_point_index);
    this.__items = this.__items.slice(0, this.__wrap_point_index);

    next.__character_count += this.__character_count - this.__wrap_point_character_count;
    this.__character_count = this.__wrap_point_character_count;

    if (next.__items[0] === " ") {
      next.__items.splice(0, 1);
      next.__character_count -= 1;
    }
    return true;
  }
  return false;
};

OutputLine.prototype.is_empty = function() {
  return this.__items.length === 0;
};

OutputLine.prototype.last = function() {
  if (!this.is_empty()) {
    return this.__items[this.__items.length - 1];
  } else {
    return null;
  }
};

OutputLine.prototype.push = function(item) {
  this.__items.push(item);
  var last_newline_index = item.lastIndexOf('\n');
  if (last_newline_index !== -1) {
    this.__character_count = item.length - last_newline_index;
  } else {
    this.__character_count += item.length;
  }
};

OutputLine.prototype.pop = function() {
  var item = null;
  if (!this.is_empty()) {
    item = this.__items.pop();
    this.__character_count -= item.length;
  }
  return item;
};


OutputLine.prototype._remove_indent = function() {
  if (this.__indent_count > 0) {
    this.__indent_count -= 1;
    this.__character_count -= this.__parent.indent_size;
  }
};

OutputLine.prototype._remove_wrap_indent = function() {
  if (this.__wrap_point_indent_count > 0) {
    this.__wrap_point_indent_count -= 1;
  }
};
OutputLine.prototype.trim = function() {
  while (this.last() === ' ') {
    this.__items.pop();
    this.__character_count -= 1;
  }
};

OutputLine.prototype.toString = function() {
  var result = '';
  if (this.is_empty()) {
    if (this.__parent.indent_empty_lines) {
      result = this.__parent.get_indent_string(this.__indent_count);
    }
  } else {
    result = this.__parent.get_indent_string(this.__indent_count, this.__alignment_count);
    result += this.__items.join('');
  }
  return result;
};

function IndentStringCache(options, baseIndentString) {
  this.__cache = [''];
  this.__indent_size = options.indent_size;
  this.__indent_string = options.indent_char;
  if (!options.indent_with_tabs) {
    this.__indent_string = new Array(options.indent_size + 1).join(options.indent_char);
  }

  // Set to null to continue support for auto detection of base indent
  baseIndentString = baseIndentString || '';
  if (options.indent_level > 0) {
    baseIndentString = new Array(options.indent_level + 1).join(this.__indent_string);
  }

  this.__base_string = baseIndentString;
  this.__base_string_length = baseIndentString.length;
}

IndentStringCache.prototype.get_indent_size = function(indent, column) {
  var result = this.__base_string_length;
  column = column || 0;
  if (indent < 0) {
    result = 0;
  }
  result += indent * this.__indent_size;
  result += column;
  return result;
};

IndentStringCache.prototype.get_indent_string = function(indent_level, column) {
  var result = this.__base_string;
  column = column || 0;
  if (indent_level < 0) {
    indent_level = 0;
    result = '';
  }
  column += indent_level * this.__indent_size;
  this.__ensure_cache(column);
  result += this.__cache[column];
  return result;
};

IndentStringCache.prototype.__ensure_cache = function(column) {
  while (column >= this.__cache.length) {
    this.__add_column();
  }
};

IndentStringCache.prototype.__add_column = function() {
  var column = this.__cache.length;
  var indent = 0;
  var result = '';
  if (this.__indent_size && column >= this.__indent_size) {
    indent = Math.floor(column / this.__indent_size);
    column -= indent * this.__indent_size;
    result = new Array(indent + 1).join(this.__indent_string);
  }
  if (column) {
    result += new Array(column + 1).join(' ');
  }

  this.__cache.push(result);
};

function Output(options, baseIndentString) {
  this.__indent_cache = new IndentStringCache(options, baseIndentString);
  this.raw = false;
  this._end_with_newline = options.end_with_newline;
  this.indent_size = options.indent_size;
  this.wrap_line_length = options.wrap_line_length;
  this.indent_empty_lines = options.indent_empty_lines;
  this.__lines = [];
  this.previous_line = null;
  this.current_line = null;
  this.next_line = new OutputLine(this);
  this.space_before_token = false;
  this.non_breaking_space = false;
  this.previous_token_wrapped = false;
  // initialize
  this.__add_outputline();
}

Output.prototype.__add_outputline = function() {
  this.previous_line = this.current_line;
  this.current_line = this.next_line.clone_empty();
  this.__lines.push(this.current_line);
};

Output.prototype.get_line_number = function() {
  return this.__lines.length;
};

Output.prototype.get_indent_string = function(indent, column) {
  return this.__indent_cache.get_indent_string(indent, column);
};

Output.prototype.get_indent_size = function(indent, column) {
  return this.__indent_cache.get_indent_size(indent, column);
};

Output.prototype.is_empty = function() {
  return !this.previous_line && this.current_line.is_empty();
};

Output.prototype.add_new_line = function(force_newline) {
  // never newline at the start of file
  // otherwise, newline only if we didn't just add one or we're forced
  if (this.is_empty() ||
    (!force_newline && this.just_added_newline())) {
    return false;
  }

  // if raw output is enabled, don't print additional newlines,
  // but still return True as though you had
  if (!this.raw) {
    this.__add_outputline();
  }
  return true;
};

Output.prototype.get_code = function(eol) {
  this.trim(true);

  // handle some edge cases where the last tokens
  // has text that ends with newline(s)
  var last_item = this.current_line.pop();
  if (last_item) {
    if (last_item[last_item.length - 1] === '\n') {
      last_item = last_item.replace(/\n+$/g, '');
    }
    this.current_line.push(last_item);
  }

  if (this._end_with_newline) {
    this.__add_outputline();
  }

  var sweet_code = this.__lines.join('\n');

  if (eol !== '\n') {
    sweet_code = sweet_code.replace(/[\n]/g, eol);
  }
  return sweet_code;
};

Output.prototype.set_wrap_point = function() {
  this.current_line._set_wrap_point();
};

Output.prototype.set_indent = function(indent, alignment) {
  indent = indent || 0;
  alignment = alignment || 0;

  // Next line stores alignment values
  this.next_line.set_indent(indent, alignment);

  // Never indent your first output indent at the start of the file
  if (this.__lines.length > 1) {
    this.current_line.set_indent(indent, alignment);
    return true;
  }

  this.current_line.set_indent();
  return false;
};

Output.prototype.add_raw_token = function(token) {
  for (var x = 0; x < token.newlines; x++) {
    this.__add_outputline();
  }
  this.current_line.set_indent(-1);
  this.current_line.push(token.whitespace_before);
  this.current_line.push(token.text);
  this.space_before_token = false;
  this.non_breaking_space = false;
  this.previous_token_wrapped = false;
};

Output.prototype.add_token = function(printable_token) {
  this.__add_space_before_token();
  this.current_line.push(printable_token);
  this.space_before_token = false;
  this.non_breaking_space = false;
  this.previous_token_wrapped = this.current_line._allow_wrap();
};

Output.prototype.__add_space_before_token = function() {
  if (this.space_before_token && !this.just_added_newline()) {
    if (!this.non_breaking_space) {
      this.set_wrap_point();
    }
    this.current_line.push(' ');
  }
};

Output.prototype.remove_indent = function(index) {
  var output_length = this.__lines.length;
  while (index < output_length) {
    this.__lines[index]._remove_indent();
    index++;
  }
  this.current_line._remove_wrap_indent();
};

Output.prototype.trim = function(eat_newlines) {
  eat_newlines = (eat_newlines === undefined) ? false : eat_newlines;

  this.current_line.trim();

  while (eat_newlines && this.__lines.length > 1 &&
    this.current_line.is_empty()) {
    this.__lines.pop();
    this.current_line = this.__lines[this.__lines.length - 1];
    this.current_line.trim();
  }

  this.previous_line = this.__lines.length > 1 ?
    this.__lines[this.__lines.length - 2] : null;
};

Output.prototype.just_added_newline = function() {
  return this.current_line.is_empty();
};

Output.prototype.just_added_blankline = function() {
  return this.is_empty() ||
    (this.current_line.is_empty() && this.previous_line.is_empty());
};

Output.prototype.ensure_empty_line_above = function(starts_with, ends_with) {
  var index = this.__lines.length - 2;
  while (index >= 0) {
    var potentialEmptyLine = this.__lines[index];
    if (potentialEmptyLine.is_empty()) {
      break;
    } else if (potentialEmptyLine.item(0).indexOf(starts_with) !== 0 &&
      potentialEmptyLine.item(-1) !== ends_with) {
      this.__lines.splice(index + 1, 0, new OutputLine(this));
      this.previous_line = this.__lines[this.__lines.length - 2];
      break;
    }
    index--;
  }
};

module.exports.Output = Output;

},{}],91:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

function Pattern(input_scanner, parent) {
  this._input = input_scanner;
  this._starting_pattern = null;
  this._match_pattern = null;
  this._until_pattern = null;
  this._until_after = false;

  if (parent) {
    this._starting_pattern = this._input.get_regexp(parent._starting_pattern, true);
    this._match_pattern = this._input.get_regexp(parent._match_pattern, true);
    this._until_pattern = this._input.get_regexp(parent._until_pattern);
    this._until_after = parent._until_after;
  }
}

Pattern.prototype.read = function() {
  var result = this._input.read(this._starting_pattern);
  if (!this._starting_pattern || result) {
    result += this._input.read(this._match_pattern, this._until_pattern, this._until_after);
  }
  return result;
};

Pattern.prototype.read_match = function() {
  return this._input.match(this._match_pattern);
};

Pattern.prototype.until_after = function(pattern) {
  var result = this._create();
  result._until_after = true;
  result._until_pattern = this._input.get_regexp(pattern);
  result._update();
  return result;
};

Pattern.prototype.until = function(pattern) {
  var result = this._create();
  result._until_after = false;
  result._until_pattern = this._input.get_regexp(pattern);
  result._update();
  return result;
};

Pattern.prototype.starting_with = function(pattern) {
  var result = this._create();
  result._starting_pattern = this._input.get_regexp(pattern, true);
  result._update();
  return result;
};

Pattern.prototype.matching = function(pattern) {
  var result = this._create();
  result._match_pattern = this._input.get_regexp(pattern, true);
  result._update();
  return result;
};

Pattern.prototype._create = function() {
  return new Pattern(this._input, this);
};

Pattern.prototype._update = function() {};

module.exports.Pattern = Pattern;

},{}],92:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

var Pattern = require('./pattern').Pattern;


var template_names = {
  django: false,
  erb: false,
  handlebars: false,
  php: false,
  smarty: false
};

// This lets templates appear anywhere we would do a readUntil
// The cost is higher but it is pay to play.
function TemplatablePattern(input_scanner, parent) {
  Pattern.call(this, input_scanner, parent);
  this.__template_pattern = null;
  this._disabled = Object.assign({}, template_names);
  this._excluded = Object.assign({}, template_names);

  if (parent) {
    this.__template_pattern = this._input.get_regexp(parent.__template_pattern);
    this._excluded = Object.assign(this._excluded, parent._excluded);
    this._disabled = Object.assign(this._disabled, parent._disabled);
  }
  var pattern = new Pattern(input_scanner);
  this.__patterns = {
    handlebars_comment: pattern.starting_with(/{{!--/).until_after(/--}}/),
    handlebars_unescaped: pattern.starting_with(/{{{/).until_after(/}}}/),
    handlebars: pattern.starting_with(/{{/).until_after(/}}/),
    php: pattern.starting_with(/<\?(?:[= ]|php)/).until_after(/\?>/),
    erb: pattern.starting_with(/<%[^%]/).until_after(/[^%]%>/),
    // django coflicts with handlebars a bit.
    django: pattern.starting_with(/{%/).until_after(/%}/),
    django_value: pattern.starting_with(/{{/).until_after(/}}/),
    django_comment: pattern.starting_with(/{#/).until_after(/#}/),
    smarty: pattern.starting_with(/{(?=[^}{\s\n])/).until_after(/[^\s\n]}/),
    smarty_comment: pattern.starting_with(/{\*/).until_after(/\*}/),
    smarty_literal: pattern.starting_with(/{literal}/).until_after(/{\/literal}/)
  };
}
TemplatablePattern.prototype = new Pattern();

TemplatablePattern.prototype._create = function() {
  return new TemplatablePattern(this._input, this);
};

TemplatablePattern.prototype._update = function() {
  this.__set_templated_pattern();
};

TemplatablePattern.prototype.disable = function(language) {
  var result = this._create();
  result._disabled[language] = true;
  result._update();
  return result;
};

TemplatablePattern.prototype.read_options = function(options) {
  var result = this._create();
  for (var language in template_names) {
    result._disabled[language] = options.templating.indexOf(language) === -1;
  }
  result._update();
  return result;
};

TemplatablePattern.prototype.exclude = function(language) {
  var result = this._create();
  result._excluded[language] = true;
  result._update();
  return result;
};

TemplatablePattern.prototype.read = function() {
  var result = '';
  if (this._match_pattern) {
    result = this._input.read(this._starting_pattern);
  } else {
    result = this._input.read(this._starting_pattern, this.__template_pattern);
  }
  var next = this._read_template();
  while (next) {
    if (this._match_pattern) {
      next += this._input.read(this._match_pattern);
    } else {
      next += this._input.readUntil(this.__template_pattern);
    }
    result += next;
    next = this._read_template();
  }

  if (this._until_after) {
    result += this._input.readUntilAfter(this._until_pattern);
  }
  return result;
};

TemplatablePattern.prototype.__set_templated_pattern = function() {
  var items = [];

  if (!this._disabled.php) {
    items.push(this.__patterns.php._starting_pattern.source);
  }
  if (!this._disabled.handlebars) {
    items.push(this.__patterns.handlebars._starting_pattern.source);
  }
  if (!this._disabled.erb) {
    items.push(this.__patterns.erb._starting_pattern.source);
  }
  if (!this._disabled.django) {
    items.push(this.__patterns.django._starting_pattern.source);
    // The starting pattern for django is more complex because it has different
    // patterns for value, comment, and other sections
    items.push(this.__patterns.django_value._starting_pattern.source);
    items.push(this.__patterns.django_comment._starting_pattern.source);
  }
  if (!this._disabled.smarty) {
    items.push(this.__patterns.smarty._starting_pattern.source);
  }

  if (this._until_pattern) {
    items.push(this._until_pattern.source);
  }
  this.__template_pattern = this._input.get_regexp('(?:' + items.join('|') + ')');
};

TemplatablePattern.prototype._read_template = function() {
  var resulting_string = '';
  var c = this._input.peek();
  if (c === '<') {
    var peek1 = this._input.peek(1);
    //if we're in a comment, do something special
    // We treat all comments as literals, even more than preformatted tags
    // we just look for the appropriate close tag
    if (!this._disabled.php && !this._excluded.php && peek1 === '?') {
      resulting_string = resulting_string ||
        this.__patterns.php.read();
    }
    if (!this._disabled.erb && !this._excluded.erb && peek1 === '%') {
      resulting_string = resulting_string ||
        this.__patterns.erb.read();
    }
  } else if (c === '{') {
    if (!this._disabled.handlebars && !this._excluded.handlebars) {
      resulting_string = resulting_string ||
        this.__patterns.handlebars_comment.read();
      resulting_string = resulting_string ||
        this.__patterns.handlebars_unescaped.read();
      resulting_string = resulting_string ||
        this.__patterns.handlebars.read();
    }
    if (!this._disabled.django) {
      // django coflicts with handlebars a bit.
      if (!this._excluded.django && !this._excluded.handlebars) {
        resulting_string = resulting_string ||
          this.__patterns.django_value.read();
      }
      if (!this._excluded.django) {
        resulting_string = resulting_string ||
          this.__patterns.django_comment.read();
        resulting_string = resulting_string ||
          this.__patterns.django.read();
      }
    }
    if (!this._disabled.smarty) {
      // smarty cannot be enabled with django or handlebars enabled
      if (this._disabled.django && this._disabled.handlebars) {
        resulting_string = resulting_string ||
          this.__patterns.smarty_comment.read();
        resulting_string = resulting_string ||
          this.__patterns.smarty_literal.read();
        resulting_string = resulting_string ||
          this.__patterns.smarty.read();
      }
    }
  }
  return resulting_string;
};


module.exports.TemplatablePattern = TemplatablePattern;

},{"./pattern":91}],93:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

function Token(type, text, newlines, whitespace_before) {
  this.type = type;
  this.text = text;

  // comments_before are
  // comments that have a new line before them
  // and may or may not have a newline after
  // this is a set of comments before
  this.comments_before = null; /* inline comment*/


  // this.comments_after =  new TokenStream(); // no new line before and newline after
  this.newlines = newlines || 0;
  this.whitespace_before = whitespace_before || '';
  this.parent = null;
  this.next = null;
  this.previous = null;
  this.opened = null;
  this.closed = null;
  this.directives = null;
}


module.exports.Token = Token;

},{}],94:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

var InputScanner = require('../core/inputscanner').InputScanner;
var Token = require('../core/token').Token;
var TokenStream = require('../core/tokenstream').TokenStream;
var WhitespacePattern = require('./whitespacepattern').WhitespacePattern;

var TOKEN = {
  START: 'TK_START',
  RAW: 'TK_RAW',
  EOF: 'TK_EOF'
};

var Tokenizer = function(input_string, options) {
  this._input = new InputScanner(input_string);
  this._options = options || {};
  this.__tokens = null;

  this._patterns = {};
  this._patterns.whitespace = new WhitespacePattern(this._input);
};

Tokenizer.prototype.tokenize = function() {
  this._input.restart();
  this.__tokens = new TokenStream();

  this._reset();

  var current;
  var previous = new Token(TOKEN.START, '');
  var open_token = null;
  var open_stack = [];
  var comments = new TokenStream();

  while (previous.type !== TOKEN.EOF) {
    current = this._get_next_token(previous, open_token);
    while (this._is_comment(current)) {
      comments.add(current);
      current = this._get_next_token(previous, open_token);
    }

    if (!comments.isEmpty()) {
      current.comments_before = comments;
      comments = new TokenStream();
    }

    current.parent = open_token;

    if (this._is_opening(current)) {
      open_stack.push(open_token);
      open_token = current;
    } else if (open_token && this._is_closing(current, open_token)) {
      current.opened = open_token;
      open_token.closed = current;
      open_token = open_stack.pop();
      current.parent = open_token;
    }

    current.previous = previous;
    previous.next = current;

    this.__tokens.add(current);
    previous = current;
  }

  return this.__tokens;
};


Tokenizer.prototype._is_first_token = function() {
  return this.__tokens.isEmpty();
};

Tokenizer.prototype._reset = function() {};

Tokenizer.prototype._get_next_token = function(previous_token, open_token) { // jshint unused:false
  this._readWhitespace();
  var resulting_string = this._input.read(/.+/g);
  if (resulting_string) {
    return this._create_token(TOKEN.RAW, resulting_string);
  } else {
    return this._create_token(TOKEN.EOF, '');
  }
};

Tokenizer.prototype._is_comment = function(current_token) { // jshint unused:false
  return false;
};

Tokenizer.prototype._is_opening = function(current_token) { // jshint unused:false
  return false;
};

Tokenizer.prototype._is_closing = function(current_token, open_token) { // jshint unused:false
  return false;
};

Tokenizer.prototype._create_token = function(type, text) {
  var token = new Token(type, text,
    this._patterns.whitespace.newline_count,
    this._patterns.whitespace.whitespace_before_token);
  return token;
};

Tokenizer.prototype._readWhitespace = function() {
  return this._patterns.whitespace.read();
};



module.exports.Tokenizer = Tokenizer;
module.exports.TOKEN = TOKEN;

},{"../core/inputscanner":88,"../core/token":93,"../core/tokenstream":95,"./whitespacepattern":96}],95:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

function TokenStream(parent_token) {
  // private
  this.__tokens = [];
  this.__tokens_length = this.__tokens.length;
  this.__position = 0;
  this.__parent_token = parent_token;
}

TokenStream.prototype.restart = function() {
  this.__position = 0;
};

TokenStream.prototype.isEmpty = function() {
  return this.__tokens_length === 0;
};

TokenStream.prototype.hasNext = function() {
  return this.__position < this.__tokens_length;
};

TokenStream.prototype.next = function() {
  var val = null;
  if (this.hasNext()) {
    val = this.__tokens[this.__position];
    this.__position += 1;
  }
  return val;
};

TokenStream.prototype.peek = function(index) {
  var val = null;
  index = index || 0;
  index += this.__position;
  if (index >= 0 && index < this.__tokens_length) {
    val = this.__tokens[index];
  }
  return val;
};

TokenStream.prototype.add = function(token) {
  if (this.__parent_token) {
    token.parent = this.__parent_token;
  }
  this.__tokens.push(token);
  this.__tokens_length += 1;
};

module.exports.TokenStream = TokenStream;

},{}],96:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

var Pattern = require('../core/pattern').Pattern;

function WhitespacePattern(input_scanner, parent) {
  Pattern.call(this, input_scanner, parent);
  if (parent) {
    this._line_regexp = this._input.get_regexp(parent._line_regexp);
  } else {
    this.__set_whitespace_patterns('', '');
  }

  this.newline_count = 0;
  this.whitespace_before_token = '';
}
WhitespacePattern.prototype = new Pattern();

WhitespacePattern.prototype.__set_whitespace_patterns = function(whitespace_chars, newline_chars) {
  whitespace_chars += '\\t ';
  newline_chars += '\\n\\r';

  this._match_pattern = this._input.get_regexp(
    '[' + whitespace_chars + newline_chars + ']+', true);
  this._newline_regexp = this._input.get_regexp(
    '\\r\\n|[' + newline_chars + ']');
};

WhitespacePattern.prototype.read = function() {
  this.newline_count = 0;
  this.whitespace_before_token = '';

  var resulting_string = this._input.read(this._match_pattern);
  if (resulting_string === ' ') {
    this.whitespace_before_token = ' ';
  } else if (resulting_string) {
    var matches = this.__split(this._newline_regexp, resulting_string);
    this.newline_count = matches.length - 1;
    this.whitespace_before_token = matches[this.newline_count];
  }

  return resulting_string;
};

WhitespacePattern.prototype.matching = function(whitespace_chars, newline_chars) {
  var result = this._create();
  result.__set_whitespace_patterns(whitespace_chars, newline_chars);
  result._update();
  return result;
};

WhitespacePattern.prototype._create = function() {
  return new WhitespacePattern(this._input, this);
};

WhitespacePattern.prototype.__split = function(regexp, input_string) {
  regexp.lastIndex = 0;
  var start_index = 0;
  var result = [];
  var next_match = regexp.exec(input_string);
  while (next_match) {
    result.push(input_string.substring(start_index, next_match.index));
    start_index = next_match.index + next_match[0].length;
    next_match = regexp.exec(input_string);
  }

  if (start_index < input_string.length) {
    result.push(input_string.substring(start_index, input_string.length));
  } else {
    result.push('');
  }

  return result;
};



module.exports.WhitespacePattern = WhitespacePattern;

},{"../core/pattern":91}],97:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

var Options = require('./options').Options;
var Output = require('../core/output').Output;
var InputScanner = require('../core/inputscanner').InputScanner;
var Directives = require('../core/directives').Directives;

var directives_core = new Directives(/\/\*/, /\*\//);

var lineBreak = /\r\n|[\r\n]/;
var allLineBreaks = /\r\n|[\r\n]/g;

// tokenizer
var whitespaceChar = /\s/;
var whitespacePattern = /(?:\s|\n)+/g;
var block_comment_pattern = /\/\*(?:[\s\S]*?)((?:\*\/)|$)/g;
var comment_pattern = /\/\/(?:[^\n\r\u2028\u2029]*)/g;

function Beautifier(source_text, options) {
  this._source_text = source_text || '';
  // Allow the setting of language/file-type specific options
  // with inheritance of overall settings
  this._options = new Options(options);
  this._ch = null;
  this._input = null;

  // https://developer.mozilla.org/en-US/docs/Web/CSS/At-rule
  this.NESTED_AT_RULE = {
    "@page": true,
    "@font-face": true,
    "@keyframes": true,
    // also in CONDITIONAL_GROUP_RULE below
    "@media": true,
    "@supports": true,
    "@document": true
  };
  this.CONDITIONAL_GROUP_RULE = {
    "@media": true,
    "@supports": true,
    "@document": true
  };

}

Beautifier.prototype.eatString = function(endChars) {
  var result = '';
  this._ch = this._input.next();
  while (this._ch) {
    result += this._ch;
    if (this._ch === "\\") {
      result += this._input.next();
    } else if (endChars.indexOf(this._ch) !== -1 || this._ch === "\n") {
      break;
    }
    this._ch = this._input.next();
  }
  return result;
};

// Skips any white space in the source text from the current position.
// When allowAtLeastOneNewLine is true, will output new lines for each
// newline character found; if the user has preserve_newlines off, only
// the first newline will be output
Beautifier.prototype.eatWhitespace = function(allowAtLeastOneNewLine) {
  var result = whitespaceChar.test(this._input.peek());
  var newline_count = 0;
  while (whitespaceChar.test(this._input.peek())) {
    this._ch = this._input.next();
    if (allowAtLeastOneNewLine && this._ch === '\n') {
      if (newline_count === 0 || newline_count < this._options.max_preserve_newlines) {
        newline_count++;
        this._output.add_new_line(true);
      }
    }
  }
  return result;
};

// Nested pseudo-class if we are insideRule
// and the next special character found opens
// a new block
Beautifier.prototype.foundNestedPseudoClass = function() {
  var openParen = 0;
  var i = 1;
  var ch = this._input.peek(i);
  while (ch) {
    if (ch === "{") {
      return true;
    } else if (ch === '(') {
      // pseudoclasses can contain ()
      openParen += 1;
    } else if (ch === ')') {
      if (openParen === 0) {
        return false;
      }
      openParen -= 1;
    } else if (ch === ";" || ch === "}") {
      return false;
    }
    i++;
    ch = this._input.peek(i);
  }
  return false;
};

Beautifier.prototype.print_string = function(output_string) {
  this._output.set_indent(this._indentLevel);
  this._output.non_breaking_space = true;
  this._output.add_token(output_string);
};

Beautifier.prototype.preserveSingleSpace = function(isAfterSpace) {
  if (isAfterSpace) {
    this._output.space_before_token = true;
  }
};

Beautifier.prototype.indent = function() {
  this._indentLevel++;
};

Beautifier.prototype.outdent = function() {
  if (this._indentLevel > 0) {
    this._indentLevel--;
  }
};

/*_____________________--------------------_____________________*/

Beautifier.prototype.beautify = function() {
  if (this._options.disabled) {
    return this._source_text;
  }

  var source_text = this._source_text;
  var eol = this._options.eol;
  if (eol === 'auto') {
    eol = '\n';
    if (source_text && lineBreak.test(source_text || '')) {
      eol = source_text.match(lineBreak)[0];
    }
  }


  // HACK: newline parsing inconsistent. This brute force normalizes the this._input.
  source_text = source_text.replace(allLineBreaks, '\n');

  // reset
  var baseIndentString = source_text.match(/^[\t ]*/)[0];

  this._output = new Output(this._options, baseIndentString);
  this._input = new InputScanner(source_text);
  this._indentLevel = 0;
  this._nestedLevel = 0;

  this._ch = null;
  var parenLevel = 0;

  var insideRule = false;
  // This is the value side of a property value pair (blue in the following ex)
  // label { content: blue }
  var insidePropertyValue = false;
  var enteringConditionalGroup = false;
  var insideAtExtend = false;
  var insideAtImport = false;
  var topCharacter = this._ch;
  var whitespace;
  var isAfterSpace;
  var previous_ch;

  while (true) {
    whitespace = this._input.read(whitespacePattern);
    isAfterSpace = whitespace !== '';
    previous_ch = topCharacter;
    this._ch = this._input.next();
    if (this._ch === '\\' && this._input.hasNext()) {
      this._ch += this._input.next();
    }
    topCharacter = this._ch;

    if (!this._ch) {
      break;
    } else if (this._ch === '/' && this._input.peek() === '*') {
      // /* css comment */
      // Always start block comments on a new line.
      // This handles scenarios where a block comment immediately
      // follows a property definition on the same line or where
      // minified code is being beautified.
      this._output.add_new_line();
      this._input.back();

      var comment = this._input.read(block_comment_pattern);

      // Handle ignore directive
      var directives = directives_core.get_directives(comment);
      if (directives && directives.ignore === 'start') {
        comment += directives_core.readIgnored(this._input);
      }

      this.print_string(comment);

      // Ensures any new lines following the comment are preserved
      this.eatWhitespace(true);

      // Block comments are followed by a new line so they don't
      // share a line with other properties
      this._output.add_new_line();
    } else if (this._ch === '/' && this._input.peek() === '/') {
      // // single line comment
      // Preserves the space before a comment
      // on the same line as a rule
      this._output.space_before_token = true;
      this._input.back();
      this.print_string(this._input.read(comment_pattern));

      // Ensures any new lines following the comment are preserved
      this.eatWhitespace(true);
    } else if (this._ch === '@') {
      this.preserveSingleSpace(isAfterSpace);

      // deal with less propery mixins @{...}
      if (this._input.peek() === '{') {
        this.print_string(this._ch + this.eatString('}'));
      } else {
        this.print_string(this._ch);

        // strip trailing space, if present, for hash property checks
        var variableOrRule = this._input.peekUntilAfter(/[: ,;{}()[\]\/='"]/g);

        if (variableOrRule.match(/[ :]$/)) {
          // we have a variable or pseudo-class, add it and insert one space before continuing
          variableOrRule = this.eatString(": ").replace(/\s$/, '');
          this.print_string(variableOrRule);
          this._output.space_before_token = true;
        }

        variableOrRule = variableOrRule.replace(/\s$/, '');

        if (variableOrRule === 'extend') {
          insideAtExtend = true;
        } else if (variableOrRule === 'import') {
          insideAtImport = true;
        }

        // might be a nesting at-rule
        if (variableOrRule in this.NESTED_AT_RULE) {
          this._nestedLevel += 1;
          if (variableOrRule in this.CONDITIONAL_GROUP_RULE) {
            enteringConditionalGroup = true;
          }
          // might be less variable
        } else if (!insideRule && parenLevel === 0 && variableOrRule.indexOf(':') !== -1) {
          insidePropertyValue = true;
          this.indent();
        }
      }
    } else if (this._ch === '#' && this._input.peek() === '{') {
      this.preserveSingleSpace(isAfterSpace);
      this.print_string(this._ch + this.eatString('}'));
    } else if (this._ch === '{') {
      if (insidePropertyValue) {
        insidePropertyValue = false;
        this.outdent();
      }

      // when entering conditional groups, only rulesets are allowed
      if (enteringConditionalGroup) {
        enteringConditionalGroup = false;
        insideRule = (this._indentLevel >= this._nestedLevel);
      } else {
        // otherwise, declarations are also allowed
        insideRule = (this._indentLevel >= this._nestedLevel - 1);
      }
      if (this._options.newline_between_rules && insideRule) {
        if (this._output.previous_line && this._output.previous_line.item(-1) !== '{') {
          this._output.ensure_empty_line_above('/', ',');
        }
      }

      this._output.space_before_token = true;

      // The difference in print_string and indent order is necessary to indent the '{' correctly
      if (this._options.brace_style === 'expand') {
        this._output.add_new_line();
        this.print_string(this._ch);
        this.indent();
        this._output.set_indent(this._indentLevel);
      } else {
        this.indent();
        this.print_string(this._ch);
      }

      this.eatWhitespace(true);
      this._output.add_new_line();
    } else if (this._ch === '}') {
      this.outdent();
      this._output.add_new_line();
      if (previous_ch === '{') {
        this._output.trim(true);
      }
      insideAtImport = false;
      insideAtExtend = false;
      if (insidePropertyValue) {
        this.outdent();
        insidePropertyValue = false;
      }
      this.print_string(this._ch);
      insideRule = false;
      if (this._nestedLevel) {
        this._nestedLevel--;
      }

      this.eatWhitespace(true);
      this._output.add_new_line();

      if (this._options.newline_between_rules && !this._output.just_added_blankline()) {
        if (this._input.peek() !== '}') {
          this._output.add_new_line(true);
        }
      }
    } else if (this._ch === ":") {
      if ((insideRule || enteringConditionalGroup) && !(this._input.lookBack("&") || this.foundNestedPseudoClass()) && !this._input.lookBack("(") && !insideAtExtend && parenLevel === 0) {
        // 'property: value' delimiter
        // which could be in a conditional group query
        this.print_string(':');
        if (!insidePropertyValue) {
          insidePropertyValue = true;
          this._output.space_before_token = true;
          this.eatWhitespace(true);
          this.indent();
        }
      } else {
        // sass/less parent reference don't use a space
        // sass nested pseudo-class don't use a space

        // preserve space before pseudoclasses/pseudoelements, as it means "in any child"
        if (this._input.lookBack(" ")) {
          this._output.space_before_token = true;
        }
        if (this._input.peek() === ":") {
          // pseudo-element
          this._ch = this._input.next();
          this.print_string("::");
        } else {
          // pseudo-class
          this.print_string(':');
        }
      }
    } else if (this._ch === '"' || this._ch === '\'') {
      this.preserveSingleSpace(isAfterSpace);
      this.print_string(this._ch + this.eatString(this._ch));
      this.eatWhitespace(true);
    } else if (this._ch === ';') {
      if (parenLevel === 0) {
        if (insidePropertyValue) {
          this.outdent();
          insidePropertyValue = false;
        }
        insideAtExtend = false;
        insideAtImport = false;
        this.print_string(this._ch);
        this.eatWhitespace(true);

        // This maintains single line comments on the same
        // line. Block comments are also affected, but
        // a new line is always output before one inside
        // that section
        if (this._input.peek() !== '/') {
          this._output.add_new_line();
        }
      } else {
        this.print_string(this._ch);
        this.eatWhitespace(true);
        this._output.space_before_token = true;
      }
    } else if (this._ch === '(') { // may be a url
      if (this._input.lookBack("url")) {
        this.print_string(this._ch);
        this.eatWhitespace();
        parenLevel++;
        this.indent();
        this._ch = this._input.next();
        if (this._ch === ')' || this._ch === '"' || this._ch === '\'') {
          this._input.back();
        } else if (this._ch) {
          this.print_string(this._ch + this.eatString(')'));
          if (parenLevel) {
            parenLevel--;
            this.outdent();
          }
        }
      } else {
        this.preserveSingleSpace(isAfterSpace);
        this.print_string(this._ch);
        this.eatWhitespace();
        parenLevel++;
        this.indent();
      }
    } else if (this._ch === ')') {
      if (parenLevel) {
        parenLevel--;
        this.outdent();
      }
      this.print_string(this._ch);
    } else if (this._ch === ',') {
      this.print_string(this._ch);
      this.eatWhitespace(true);
      if (this._options.selector_separator_newline && !insidePropertyValue && parenLevel === 0 && !insideAtImport && !insideAtExtend) {
        this._output.add_new_line();
      } else {
        this._output.space_before_token = true;
      }
    } else if ((this._ch === '>' || this._ch === '+' || this._ch === '~') && !insidePropertyValue && parenLevel === 0) {
      //handle combinator spacing
      if (this._options.space_around_combinator) {
        this._output.space_before_token = true;
        this.print_string(this._ch);
        this._output.space_before_token = true;
      } else {
        this.print_string(this._ch);
        this.eatWhitespace();
        // squash extra whitespace
        if (this._ch && whitespaceChar.test(this._ch)) {
          this._ch = '';
        }
      }
    } else if (this._ch === ']') {
      this.print_string(this._ch);
    } else if (this._ch === '[') {
      this.preserveSingleSpace(isAfterSpace);
      this.print_string(this._ch);
    } else if (this._ch === '=') { // no whitespace before or after
      this.eatWhitespace();
      this.print_string('=');
      if (whitespaceChar.test(this._ch)) {
        this._ch = '';
      }
    } else if (this._ch === '!' && !this._input.lookBack("\\")) { // !important
      this.print_string(' ');
      this.print_string(this._ch);
    } else {
      this.preserveSingleSpace(isAfterSpace);
      this.print_string(this._ch);
    }
  }

  var sweetCode = this._output.get_code(eol);

  return sweetCode;
};

module.exports.Beautifier = Beautifier;

},{"../core/directives":87,"../core/inputscanner":88,"../core/output":90,"./options":99}],98:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

var Beautifier = require('./beautifier').Beautifier,
  Options = require('./options').Options;

function css_beautify(source_text, options) {
  var beautifier = new Beautifier(source_text, options);
  return beautifier.beautify();
}

module.exports = css_beautify;
module.exports.defaultOptions = function() {
  return new Options();
};

},{"./beautifier":97,"./options":99}],99:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

var BaseOptions = require('../core/options').Options;

function Options(options) {
  BaseOptions.call(this, options, 'css');

  this.selector_separator_newline = this._get_boolean('selector_separator_newline', true);
  this.newline_between_rules = this._get_boolean('newline_between_rules', true);
  var space_around_selector_separator = this._get_boolean('space_around_selector_separator');
  this.space_around_combinator = this._get_boolean('space_around_combinator') || space_around_selector_separator;

  var brace_style_split = this._get_selection_list('brace_style', ['collapse', 'expand', 'end-expand', 'none', 'preserve-inline']);
  this.brace_style = 'collapse';
  for (var bs = 0; bs < brace_style_split.length; bs++) {
    if (brace_style_split[bs] !== 'expand') {
      // default to collapse, as only collapse|expand is implemented for now
      this.brace_style = 'collapse';
    } else {
      this.brace_style = brace_style_split[bs];
    }
  }
}
Options.prototype = new BaseOptions();



module.exports.Options = Options;

},{"../core/options":89}],100:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

var Options = require('../html/options').Options;
var Output = require('../core/output').Output;
var Tokenizer = require('../html/tokenizer').Tokenizer;
var TOKEN = require('../html/tokenizer').TOKEN;

var lineBreak = /\r\n|[\r\n]/;
var allLineBreaks = /\r\n|[\r\n]/g;

var Printer = function(options, base_indent_string) { //handles input/output and some other printing functions

  this.indent_level = 0;
  this.alignment_size = 0;
  this.max_preserve_newlines = options.max_preserve_newlines;
  this.preserve_newlines = options.preserve_newlines;

  this._output = new Output(options, base_indent_string);

};

Printer.prototype.current_line_has_match = function(pattern) {
  return this._output.current_line.has_match(pattern);
};

Printer.prototype.set_space_before_token = function(value, non_breaking) {
  this._output.space_before_token = value;
  this._output.non_breaking_space = non_breaking;
};

Printer.prototype.set_wrap_point = function() {
  this._output.set_indent(this.indent_level, this.alignment_size);
  this._output.set_wrap_point();
};


Printer.prototype.add_raw_token = function(token) {
  this._output.add_raw_token(token);
};

Printer.prototype.print_preserved_newlines = function(raw_token) {
  var newlines = 0;
  if (raw_token.type !== TOKEN.TEXT && raw_token.previous.type !== TOKEN.TEXT) {
    newlines = raw_token.newlines ? 1 : 0;
  }

  if (this.preserve_newlines) {
    newlines = raw_token.newlines < this.max_preserve_newlines + 1 ? raw_token.newlines : this.max_preserve_newlines + 1;
  }
  for (var n = 0; n < newlines; n++) {
    this.print_newline(n > 0);
  }

  return newlines !== 0;
};

Printer.prototype.traverse_whitespace = function(raw_token) {
  if (raw_token.whitespace_before || raw_token.newlines) {
    if (!this.print_preserved_newlines(raw_token)) {
      this._output.space_before_token = true;
    }
    return true;
  }
  return false;
};

Printer.prototype.previous_token_wrapped = function() {
  return this._output.previous_token_wrapped;
};

Printer.prototype.print_newline = function(force) {
  this._output.add_new_line(force);
};

Printer.prototype.print_token = function(token) {
  if (token.text) {
    this._output.set_indent(this.indent_level, this.alignment_size);
    this._output.add_token(token.text);
  }
};

Printer.prototype.indent = function() {
  this.indent_level++;
};

Printer.prototype.get_full_indent = function(level) {
  level = this.indent_level + (level || 0);
  if (level < 1) {
    return '';
  }

  return this._output.get_indent_string(level);
};

var get_type_attribute = function(start_token) {
  var result = null;
  var raw_token = start_token.next;

  // Search attributes for a type attribute
  while (raw_token.type !== TOKEN.EOF && start_token.closed !== raw_token) {
    if (raw_token.type === TOKEN.ATTRIBUTE && raw_token.text === 'type') {
      if (raw_token.next && raw_token.next.type === TOKEN.EQUALS &&
        raw_token.next.next && raw_token.next.next.type === TOKEN.VALUE) {
        result = raw_token.next.next.text;
      }
      break;
    }
    raw_token = raw_token.next;
  }

  return result;
};

var get_custom_beautifier_name = function(tag_check, raw_token) {
  var typeAttribute = null;
  var result = null;

  if (!raw_token.closed) {
    return null;
  }

  if (tag_check === 'script') {
    typeAttribute = 'text/javascript';
  } else if (tag_check === 'style') {
    typeAttribute = 'text/css';
  }

  typeAttribute = get_type_attribute(raw_token) || typeAttribute;

  // For script and style tags that have a type attribute, only enable custom beautifiers for matching values
  // For those without a type attribute use default;
  if (typeAttribute.search('text/css') > -1) {
    result = 'css';
  } else if (typeAttribute.search(/module|((text|application|dojo)\/(x-)?(javascript|ecmascript|jscript|livescript|(ld\+)?json|method|aspect))/) > -1) {
    result = 'javascript';
  } else if (typeAttribute.search(/(text|application|dojo)\/(x-)?(html)/) > -1) {
    result = 'html';
  } else if (typeAttribute.search(/test\/null/) > -1) {
    // Test only mime-type for testing the beautifier when null is passed as beautifing function
    result = 'null';
  }

  return result;
};

function in_array(what, arr) {
  return arr.indexOf(what) !== -1;
}

function TagFrame(parent, parser_token, indent_level) {
  this.parent = parent || null;
  this.tag = parser_token ? parser_token.tag_name : '';
  this.indent_level = indent_level || 0;
  this.parser_token = parser_token || null;
}

function TagStack(printer) {
  this._printer = printer;
  this._current_frame = null;
}

TagStack.prototype.get_parser_token = function() {
  return this._current_frame ? this._current_frame.parser_token : null;
};

TagStack.prototype.record_tag = function(parser_token) { //function to record a tag and its parent in this.tags Object
  var new_frame = new TagFrame(this._current_frame, parser_token, this._printer.indent_level);
  this._current_frame = new_frame;
};

TagStack.prototype._try_pop_frame = function(frame) { //function to retrieve the opening tag to the corresponding closer
  var parser_token = null;

  if (frame) {
    parser_token = frame.parser_token;
    this._printer.indent_level = frame.indent_level;
    this._current_frame = frame.parent;
  }

  return parser_token;
};

TagStack.prototype._get_frame = function(tag_list, stop_list) { //function to retrieve the opening tag to the corresponding closer
  var frame = this._current_frame;

  while (frame) { //till we reach '' (the initial value);
    if (tag_list.indexOf(frame.tag) !== -1) { //if this is it use it
      break;
    } else if (stop_list && stop_list.indexOf(frame.tag) !== -1) {
      frame = null;
      break;
    }
    frame = frame.parent;
  }

  return frame;
};

TagStack.prototype.try_pop = function(tag, stop_list) { //function to retrieve the opening tag to the corresponding closer
  var frame = this._get_frame([tag], stop_list);
  return this._try_pop_frame(frame);
};

TagStack.prototype.indent_to_tag = function(tag_list) {
  var frame = this._get_frame(tag_list);
  if (frame) {
    this._printer.indent_level = frame.indent_level;
  }
};

function Beautifier(source_text, options, js_beautify, css_beautify) {
  //Wrapper function to invoke all the necessary constructors and deal with the output.
  this._source_text = source_text || '';
  options = options || {};
  this._js_beautify = js_beautify;
  this._css_beautify = css_beautify;
  this._tag_stack = null;

  // Allow the setting of language/file-type specific options
  // with inheritance of overall settings
  var optionHtml = new Options(options, 'html');

  this._options = optionHtml;

  this._is_wrap_attributes_force = this._options.wrap_attributes.substr(0, 'force'.length) === 'force';
  this._is_wrap_attributes_force_expand_multiline = (this._options.wrap_attributes === 'force-expand-multiline');
  this._is_wrap_attributes_force_aligned = (this._options.wrap_attributes === 'force-aligned');
  this._is_wrap_attributes_aligned_multiple = (this._options.wrap_attributes === 'aligned-multiple');
  this._is_wrap_attributes_preserve = this._options.wrap_attributes.substr(0, 'preserve'.length) === 'preserve';
  this._is_wrap_attributes_preserve_aligned = (this._options.wrap_attributes === 'preserve-aligned');
}

Beautifier.prototype.beautify = function() {

  // if disabled, return the input unchanged.
  if (this._options.disabled) {
    return this._source_text;
  }

  var source_text = this._source_text;
  var eol = this._options.eol;
  if (this._options.eol === 'auto') {
    eol = '\n';
    if (source_text && lineBreak.test(source_text)) {
      eol = source_text.match(lineBreak)[0];
    }
  }

  // HACK: newline parsing inconsistent. This brute force normalizes the input.
  source_text = source_text.replace(allLineBreaks, '\n');

  var baseIndentString = source_text.match(/^[\t ]*/)[0];

  var last_token = {
    text: '',
    type: ''
  };

  var last_tag_token = new TagOpenParserToken();

  var printer = new Printer(this._options, baseIndentString);
  var tokens = new Tokenizer(source_text, this._options).tokenize();

  this._tag_stack = new TagStack(printer);

  var parser_token = null;
  var raw_token = tokens.next();
  while (raw_token.type !== TOKEN.EOF) {

    if (raw_token.type === TOKEN.TAG_OPEN || raw_token.type === TOKEN.COMMENT) {
      parser_token = this._handle_tag_open(printer, raw_token, last_tag_token, last_token);
      last_tag_token = parser_token;
    } else if ((raw_token.type === TOKEN.ATTRIBUTE || raw_token.type === TOKEN.EQUALS || raw_token.type === TOKEN.VALUE) ||
      (raw_token.type === TOKEN.TEXT && !last_tag_token.tag_complete)) {
      parser_token = this._handle_inside_tag(printer, raw_token, last_tag_token, tokens);
    } else if (raw_token.type === TOKEN.TAG_CLOSE) {
      parser_token = this._handle_tag_close(printer, raw_token, last_tag_token);
    } else if (raw_token.type === TOKEN.TEXT) {
      parser_token = this._handle_text(printer, raw_token, last_tag_token);
    } else {
      // This should never happen, but if it does. Print the raw token
      printer.add_raw_token(raw_token);
    }

    last_token = parser_token;

    raw_token = tokens.next();
  }
  var sweet_code = printer._output.get_code(eol);

  return sweet_code;
};

Beautifier.prototype._handle_tag_close = function(printer, raw_token, last_tag_token) {
  var parser_token = {
    text: raw_token.text,
    type: raw_token.type
  };
  printer.alignment_size = 0;
  last_tag_token.tag_complete = true;

  printer.set_space_before_token(raw_token.newlines || raw_token.whitespace_before !== '', true);
  if (last_tag_token.is_unformatted) {
    printer.add_raw_token(raw_token);
  } else {
    if (last_tag_token.tag_start_char === '<') {
      printer.set_space_before_token(raw_token.text[0] === '/', true); // space before />, no space before >
      if (this._is_wrap_attributes_force_expand_multiline && last_tag_token.has_wrapped_attrs) {
        printer.print_newline(false);
      }
    }
    printer.print_token(raw_token);

  }

  if (last_tag_token.indent_content &&
    !(last_tag_token.is_unformatted || last_tag_token.is_content_unformatted)) {
    printer.indent();

    // only indent once per opened tag
    last_tag_token.indent_content = false;
  }

  if (!last_tag_token.is_inline_element &&
    !(last_tag_token.is_unformatted || last_tag_token.is_content_unformatted)) {
    printer.set_wrap_point();
  }

  return parser_token;
};

Beautifier.prototype._handle_inside_tag = function(printer, raw_token, last_tag_token, tokens) {
  var wrapped = last_tag_token.has_wrapped_attrs;
  var parser_token = {
    text: raw_token.text,
    type: raw_token.type
  };

  printer.set_space_before_token(raw_token.newlines || raw_token.whitespace_before !== '', true);
  if (last_tag_token.is_unformatted) {
    printer.add_raw_token(raw_token);
  } else if (last_tag_token.tag_start_char === '{' && raw_token.type === TOKEN.TEXT) {
    // For the insides of handlebars allow newlines or a single space between open and contents
    if (printer.print_preserved_newlines(raw_token)) {
      raw_token.newlines = 0;
      printer.add_raw_token(raw_token);
    } else {
      printer.print_token(raw_token);
    }
  } else {
    if (raw_token.type === TOKEN.ATTRIBUTE) {
      printer.set_space_before_token(true);
      last_tag_token.attr_count += 1;
    } else if (raw_token.type === TOKEN.EQUALS) { //no space before =
      printer.set_space_before_token(false);
    } else if (raw_token.type === TOKEN.VALUE && raw_token.previous.type === TOKEN.EQUALS) { //no space before value
      printer.set_space_before_token(false);
    }

    if (raw_token.type === TOKEN.ATTRIBUTE && last_tag_token.tag_start_char === '<') {
      if (this._is_wrap_attributes_preserve || this._is_wrap_attributes_preserve_aligned) {
        printer.traverse_whitespace(raw_token);
        wrapped = wrapped || raw_token.newlines !== 0;
      }


      if (this._is_wrap_attributes_force) {
        var force_attr_wrap = last_tag_token.attr_count > 1;
        if (this._is_wrap_attributes_force_expand_multiline && last_tag_token.attr_count === 1) {
          var is_only_attribute = true;
          var peek_index = 0;
          var peek_token;
          do {
            peek_token = tokens.peek(peek_index);
            if (peek_token.type === TOKEN.ATTRIBUTE) {
              is_only_attribute = false;
              break;
            }
            peek_index += 1;
          } while (peek_index < 4 && peek_token.type !== TOKEN.EOF && peek_token.type !== TOKEN.TAG_CLOSE);

          force_attr_wrap = !is_only_attribute;
        }

        if (force_attr_wrap) {
          printer.print_newline(false);
          wrapped = true;
        }
      }
    }
    printer.print_token(raw_token);
    wrapped = wrapped || printer.previous_token_wrapped();
    last_tag_token.has_wrapped_attrs = wrapped;
  }
  return parser_token;
};

Beautifier.prototype._handle_text = function(printer, raw_token, last_tag_token) {
  var parser_token = {
    text: raw_token.text,
    type: 'TK_CONTENT'
  };
  if (last_tag_token.custom_beautifier_name) { //check if we need to format javascript
    this._print_custom_beatifier_text(printer, raw_token, last_tag_token);
  } else if (last_tag_token.is_unformatted || last_tag_token.is_content_unformatted) {
    printer.add_raw_token(raw_token);
  } else {
    printer.traverse_whitespace(raw_token);
    printer.print_token(raw_token);
  }
  return parser_token;
};

Beautifier.prototype._print_custom_beatifier_text = function(printer, raw_token, last_tag_token) {
  var local = this;
  if (raw_token.text !== '') {

    var text = raw_token.text,
      _beautifier,
      script_indent_level = 1,
      pre = '',
      post = '';
    if (last_tag_token.custom_beautifier_name === 'javascript' && typeof this._js_beautify === 'function') {
      _beautifier = this._js_beautify;
    } else if (last_tag_token.custom_beautifier_name === 'css' && typeof this._css_beautify === 'function') {
      _beautifier = this._css_beautify;
    } else if (last_tag_token.custom_beautifier_name === 'html') {
      _beautifier = function(html_source, options) {
        var beautifier = new Beautifier(html_source, options, local._js_beautify, local._css_beautify);
        return beautifier.beautify();
      };
    }

    if (this._options.indent_scripts === "keep") {
      script_indent_level = 0;
    } else if (this._options.indent_scripts === "separate") {
      script_indent_level = -printer.indent_level;
    }

    var indentation = printer.get_full_indent(script_indent_level);

    // if there is at least one empty line at the end of this text, strip it
    // we'll be adding one back after the text but before the containing tag.
    text = text.replace(/\n[ \t]*$/, '');

    // Handle the case where content is wrapped in a comment or cdata.
    if (last_tag_token.custom_beautifier_name !== 'html' &&
      text[0] === '<' && text.match(/^(<!--|<!\[CDATA\[)/)) {
      var matched = /^(<!--[^\n]*|<!\[CDATA\[)(\n?)([ \t\n]*)([\s\S]*)(-->|]]>)$/.exec(text);

      // if we start to wrap but don't finish, print raw
      if (!matched) {
        printer.add_raw_token(raw_token);
        return;
      }

      pre = indentation + matched[1] + '\n';
      text = matched[4];
      if (matched[5]) {
        post = indentation + matched[5];
      }

      // if there is at least one empty line at the end of this text, strip it
      // we'll be adding one back after the text but before the containing tag.
      text = text.replace(/\n[ \t]*$/, '');

      if (matched[2] || matched[3].indexOf('\n') !== -1) {
        // if the first line of the non-comment text has spaces
        // use that as the basis for indenting in null case.
        matched = matched[3].match(/[ \t]+$/);
        if (matched) {
          raw_token.whitespace_before = matched[0];
        }
      }
    }

    if (text) {
      if (_beautifier) {

        // call the Beautifier if avaliable
        var Child_options = function() {
          this.eol = '\n';
        };
        Child_options.prototype = this._options.raw_options;
        var child_options = new Child_options();
        text = _beautifier(indentation + text, child_options);
      } else {
        // simply indent the string otherwise
        var white = raw_token.whitespace_before;
        if (white) {
          text = text.replace(new RegExp('\n(' + white + ')?', 'g'), '\n');
        }

        text = indentation + text.replace(/\n/g, '\n' + indentation);
      }
    }

    if (pre) {
      if (!text) {
        text = pre + post;
      } else {
        text = pre + text + '\n' + post;
      }
    }

    printer.print_newline(false);
    if (text) {
      raw_token.text = text;
      raw_token.whitespace_before = '';
      raw_token.newlines = 0;
      printer.add_raw_token(raw_token);
      printer.print_newline(true);
    }
  }
};

Beautifier.prototype._handle_tag_open = function(printer, raw_token, last_tag_token, last_token) {
  var parser_token = this._get_tag_open_token(raw_token);

  if ((last_tag_token.is_unformatted || last_tag_token.is_content_unformatted) &&
    !last_tag_token.is_empty_element &&
    raw_token.type === TOKEN.TAG_OPEN && raw_token.text.indexOf('</') === 0) {
    // End element tags for unformatted or content_unformatted elements
    // are printed raw to keep any newlines inside them exactly the same.
    printer.add_raw_token(raw_token);
    parser_token.start_tag_token = this._tag_stack.try_pop(parser_token.tag_name);
  } else {
    printer.traverse_whitespace(raw_token);
    this._set_tag_position(printer, raw_token, parser_token, last_tag_token, last_token);
    if (!parser_token.is_inline_element) {
      printer.set_wrap_point();
    }
    printer.print_token(raw_token);
  }

  //indent attributes an auto, forced, aligned or forced-align line-wrap
  if (this._is_wrap_attributes_force_aligned || this._is_wrap_attributes_aligned_multiple || this._is_wrap_attributes_preserve_aligned) {
    parser_token.alignment_size = raw_token.text.length + 1;
  }

  if (!parser_token.tag_complete && !parser_token.is_unformatted) {
    printer.alignment_size = parser_token.alignment_size;
  }

  return parser_token;
};

var TagOpenParserToken = function(parent, raw_token) {
  this.parent = parent || null;
  this.text = '';
  this.type = 'TK_TAG_OPEN';
  this.tag_name = '';
  this.is_inline_element = false;
  this.is_unformatted = false;
  this.is_content_unformatted = false;
  this.is_empty_element = false;
  this.is_start_tag = false;
  this.is_end_tag = false;
  this.indent_content = false;
  this.multiline_content = false;
  this.custom_beautifier_name = null;
  this.start_tag_token = null;
  this.attr_count = 0;
  this.has_wrapped_attrs = false;
  this.alignment_size = 0;
  this.tag_complete = false;
  this.tag_start_char = '';
  this.tag_check = '';

  if (!raw_token) {
    this.tag_complete = true;
  } else {
    var tag_check_match;

    this.tag_start_char = raw_token.text[0];
    this.text = raw_token.text;

    if (this.tag_start_char === '<') {
      tag_check_match = raw_token.text.match(/^<([^\s>]*)/);
      this.tag_check = tag_check_match ? tag_check_match[1] : '';
    } else {
      tag_check_match = raw_token.text.match(/^{{(?:[\^]|#\*?)?([^\s}]+)/);
      this.tag_check = tag_check_match ? tag_check_match[1] : '';

      // handle "{{#> myPartial}}
      if (raw_token.text === '{{#>' && this.tag_check === '>' && raw_token.next !== null) {
        this.tag_check = raw_token.next.text;
      }
    }
    this.tag_check = this.tag_check.toLowerCase();

    if (raw_token.type === TOKEN.COMMENT) {
      this.tag_complete = true;
    }

    this.is_start_tag = this.tag_check.charAt(0) !== '/';
    this.tag_name = !this.is_start_tag ? this.tag_check.substr(1) : this.tag_check;
    this.is_end_tag = !this.is_start_tag ||
      (raw_token.closed && raw_token.closed.text === '/>');

    // handlebars tags that don't start with # or ^ are single_tags, and so also start and end.
    this.is_end_tag = this.is_end_tag ||
      (this.tag_start_char === '{' && (this.text.length < 3 || (/[^#\^]/.test(this.text.charAt(2)))));
  }
};

Beautifier.prototype._get_tag_open_token = function(raw_token) { //function to get a full tag and parse its type
  var parser_token = new TagOpenParserToken(this._tag_stack.get_parser_token(), raw_token);

  parser_token.alignment_size = this._options.wrap_attributes_indent_size;

  parser_token.is_end_tag = parser_token.is_end_tag ||
    in_array(parser_token.tag_check, this._options.void_elements);

  parser_token.is_empty_element = parser_token.tag_complete ||
    (parser_token.is_start_tag && parser_token.is_end_tag);

  parser_token.is_unformatted = !parser_token.tag_complete && in_array(parser_token.tag_check, this._options.unformatted);
  parser_token.is_content_unformatted = !parser_token.is_empty_element && in_array(parser_token.tag_check, this._options.content_unformatted);
  parser_token.is_inline_element = in_array(parser_token.tag_name, this._options.inline) || parser_token.tag_start_char === '{';

  return parser_token;
};

Beautifier.prototype._set_tag_position = function(printer, raw_token, parser_token, last_tag_token, last_token) {

  if (!parser_token.is_empty_element) {
    if (parser_token.is_end_tag) { //this tag is a double tag so check for tag-ending
      parser_token.start_tag_token = this._tag_stack.try_pop(parser_token.tag_name); //remove it and all ancestors
    } else { // it's a start-tag
      // check if this tag is starting an element that has optional end element
      // and do an ending needed
      if (this._do_optional_end_element(parser_token)) {
        if (!parser_token.is_inline_element) {
          printer.print_newline(false);
        }
      }

      this._tag_stack.record_tag(parser_token); //push it on the tag stack

      if ((parser_token.tag_name === 'script' || parser_token.tag_name === 'style') &&
        !(parser_token.is_unformatted || parser_token.is_content_unformatted)) {
        parser_token.custom_beautifier_name = get_custom_beautifier_name(parser_token.tag_check, raw_token);
      }
    }
  }

  if (in_array(parser_token.tag_check, this._options.extra_liners)) { //check if this double needs an extra line
    printer.print_newline(false);
    if (!printer._output.just_added_blankline()) {
      printer.print_newline(true);
    }
  }

  if (parser_token.is_empty_element) { //if this tag name is a single tag type (either in the list or has a closing /)

    // if you hit an else case, reset the indent level if you are inside an:
    // 'if', 'unless', or 'each' block.
    if (parser_token.tag_start_char === '{' && parser_token.tag_check === 'else') {
      this._tag_stack.indent_to_tag(['if', 'unless', 'each']);
      parser_token.indent_content = true;
      // Don't add a newline if opening {{#if}} tag is on the current line
      var foundIfOnCurrentLine = printer.current_line_has_match(/{{#if/);
      if (!foundIfOnCurrentLine) {
        printer.print_newline(false);
      }
    }

    // Don't add a newline before elements that should remain where they are.
    if (parser_token.tag_name === '!--' && last_token.type === TOKEN.TAG_CLOSE &&
      last_tag_token.is_end_tag && parser_token.text.indexOf('\n') === -1) {
      //Do nothing. Leave comments on same line.
    } else {
      if (!(parser_token.is_inline_element || parser_token.is_unformatted)) {
        printer.print_newline(false);
      }
      this._calcluate_parent_multiline(printer, parser_token);
    }
  } else if (parser_token.is_end_tag) { //this tag is a double tag so check for tag-ending
    var do_end_expand = false;

    // deciding whether a block is multiline should not be this hard
    do_end_expand = parser_token.start_tag_token && parser_token.start_tag_token.multiline_content;
    do_end_expand = do_end_expand || (!parser_token.is_inline_element &&
      !(last_tag_token.is_inline_element || last_tag_token.is_unformatted) &&
      !(last_token.type === TOKEN.TAG_CLOSE && parser_token.start_tag_token === last_tag_token) &&
      last_token.type !== 'TK_CONTENT'
    );

    if (parser_token.is_content_unformatted || parser_token.is_unformatted) {
      do_end_expand = false;
    }

    if (do_end_expand) {
      printer.print_newline(false);
    }
  } else { // it's a start-tag
    parser_token.indent_content = !parser_token.custom_beautifier_name;

    if (parser_token.tag_start_char === '<') {
      if (parser_token.tag_name === 'html') {
        parser_token.indent_content = this._options.indent_inner_html;
      } else if (parser_token.tag_name === 'head') {
        parser_token.indent_content = this._options.indent_head_inner_html;
      } else if (parser_token.tag_name === 'body') {
        parser_token.indent_content = this._options.indent_body_inner_html;
      }
    }

    if (!(parser_token.is_inline_element || parser_token.is_unformatted) &&
      (last_token.type !== 'TK_CONTENT' || parser_token.is_content_unformatted)) {
      printer.print_newline(false);
    }

    this._calcluate_parent_multiline(printer, parser_token);
  }
};

Beautifier.prototype._calcluate_parent_multiline = function(printer, parser_token) {
  if (parser_token.parent && printer._output.just_added_newline() &&
    !((parser_token.is_inline_element || parser_token.is_unformatted) && parser_token.parent.is_inline_element)) {
    parser_token.parent.multiline_content = true;
  }
};

//To be used for <p> tag special case:
var p_closers = ['address', 'article', 'aside', 'blockquote', 'details', 'div', 'dl', 'fieldset', 'figcaption', 'figure', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'header', 'hr', 'main', 'nav', 'ol', 'p', 'pre', 'section', 'table', 'ul'];
var p_parent_excludes = ['a', 'audio', 'del', 'ins', 'map', 'noscript', 'video'];

Beautifier.prototype._do_optional_end_element = function(parser_token) {
  var result = null;
  // NOTE: cases of "if there is no more content in the parent element"
  // are handled automatically by the beautifier.
  // It assumes parent or ancestor close tag closes all children.
  // https://www.w3.org/TR/html5/syntax.html#optional-tags
  if (parser_token.is_empty_element || !parser_token.is_start_tag || !parser_token.parent) {
    return;

  }

  if (parser_token.tag_name === 'body') {
    // A head element’s end tag may be omitted if the head element is not immediately followed by a space character or a comment.
    result = result || this._tag_stack.try_pop('head');

    //} else if (parser_token.tag_name === 'body') {
    // DONE: A body element’s end tag may be omitted if the body element is not immediately followed by a comment.

  } else if (parser_token.tag_name === 'li') {
    // An li element’s end tag may be omitted if the li element is immediately followed by another li element or if there is no more content in the parent element.
    result = result || this._tag_stack.try_pop('li', ['ol', 'ul']);

  } else if (parser_token.tag_name === 'dd' || parser_token.tag_name === 'dt') {
    // A dd element’s end tag may be omitted if the dd element is immediately followed by another dd element or a dt element, or if there is no more content in the parent element.
    // A dt element’s end tag may be omitted if the dt element is immediately followed by another dt element or a dd element.
    result = result || this._tag_stack.try_pop('dt', ['dl']);
    result = result || this._tag_stack.try_pop('dd', ['dl']);


  } else if (parser_token.parent.tag_name === 'p' && p_closers.indexOf(parser_token.tag_name) !== -1) {
    // IMPORTANT: this else-if works because p_closers has no overlap with any other element we look for in this method
    // check for the parent element is an HTML element that is not an <a>, <audio>, <del>, <ins>, <map>, <noscript>, or <video> element,  or an autonomous custom element.
    // To do this right, this needs to be coded as an inclusion of the inverse of the exclusion above.
    // But to start with (if we ignore "autonomous custom elements") the exclusion would be fine.
    var p_parent = parser_token.parent.parent;
    if (!p_parent || p_parent_excludes.indexOf(p_parent.tag_name) === -1) {
      result = result || this._tag_stack.try_pop('p');
    }
  } else if (parser_token.tag_name === 'rp' || parser_token.tag_name === 'rt') {
    // An rt element’s end tag may be omitted if the rt element is immediately followed by an rt or rp element, or if there is no more content in the parent element.
    // An rp element’s end tag may be omitted if the rp element is immediately followed by an rt or rp element, or if there is no more content in the parent element.
    result = result || this._tag_stack.try_pop('rt', ['ruby', 'rtc']);
    result = result || this._tag_stack.try_pop('rp', ['ruby', 'rtc']);

  } else if (parser_token.tag_name === 'optgroup') {
    // An optgroup element’s end tag may be omitted if the optgroup element is immediately followed by another optgroup element, or if there is no more content in the parent element.
    // An option element’s end tag may be omitted if the option element is immediately followed by another option element, or if it is immediately followed by an optgroup element, or if there is no more content in the parent element.
    result = result || this._tag_stack.try_pop('optgroup', ['select']);
    //result = result || this._tag_stack.try_pop('option', ['select']);

  } else if (parser_token.tag_name === 'option') {
    // An option element’s end tag may be omitted if the option element is immediately followed by another option element, or if it is immediately followed by an optgroup element, or if there is no more content in the parent element.
    result = result || this._tag_stack.try_pop('option', ['select', 'datalist', 'optgroup']);

  } else if (parser_token.tag_name === 'colgroup') {
    // DONE: A colgroup element’s end tag may be omitted if the colgroup element is not immediately followed by a space character or a comment.
    // A caption element's end tag may be ommitted if a colgroup, thead, tfoot, tbody, or tr element is started.
    result = result || this._tag_stack.try_pop('caption', ['table']);

  } else if (parser_token.tag_name === 'thead') {
    // A colgroup element's end tag may be ommitted if a thead, tfoot, tbody, or tr element is started.
    // A caption element's end tag may be ommitted if a colgroup, thead, tfoot, tbody, or tr element is started.
    result = result || this._tag_stack.try_pop('caption', ['table']);
    result = result || this._tag_stack.try_pop('colgroup', ['table']);

    //} else if (parser_token.tag_name === 'caption') {
    // DONE: A caption element’s end tag may be omitted if the caption element is not immediately followed by a space character or a comment.

  } else if (parser_token.tag_name === 'tbody' || parser_token.tag_name === 'tfoot') {
    // A thead element’s end tag may be omitted if the thead element is immediately followed by a tbody or tfoot element.
    // A tbody element’s end tag may be omitted if the tbody element is immediately followed by a tbody or tfoot element, or if there is no more content in the parent element.
    // A colgroup element's end tag may be ommitted if a thead, tfoot, tbody, or tr element is started.
    // A caption element's end tag may be ommitted if a colgroup, thead, tfoot, tbody, or tr element is started.
    result = result || this._tag_stack.try_pop('caption', ['table']);
    result = result || this._tag_stack.try_pop('colgroup', ['table']);
    result = result || this._tag_stack.try_pop('thead', ['table']);
    result = result || this._tag_stack.try_pop('tbody', ['table']);

    //} else if (parser_token.tag_name === 'tfoot') {
    // DONE: A tfoot element’s end tag may be omitted if there is no more content in the parent element.

  } else if (parser_token.tag_name === 'tr') {
    // A tr element’s end tag may be omitted if the tr element is immediately followed by another tr element, or if there is no more content in the parent element.
    // A colgroup element's end tag may be ommitted if a thead, tfoot, tbody, or tr element is started.
    // A caption element's end tag may be ommitted if a colgroup, thead, tfoot, tbody, or tr element is started.
    result = result || this._tag_stack.try_pop('caption', ['table']);
    result = result || this._tag_stack.try_pop('colgroup', ['table']);
    result = result || this._tag_stack.try_pop('tr', ['table', 'thead', 'tbody', 'tfoot']);

  } else if (parser_token.tag_name === 'th' || parser_token.tag_name === 'td') {
    // A td element’s end tag may be omitted if the td element is immediately followed by a td or th element, or if there is no more content in the parent element.
    // A th element’s end tag may be omitted if the th element is immediately followed by a td or th element, or if there is no more content in the parent element.
    result = result || this._tag_stack.try_pop('td', ['table', 'thead', 'tbody', 'tfoot', 'tr']);
    result = result || this._tag_stack.try_pop('th', ['table', 'thead', 'tbody', 'tfoot', 'tr']);
  }

  // Start element omission not handled currently
  // A head element’s start tag may be omitted if the element is empty, or if the first thing inside the head element is an element.
  // A tbody element’s start tag may be omitted if the first thing inside the tbody element is a tr element, and if the element is not immediately preceded by a tbody, thead, or tfoot element whose end tag has been omitted. (It can’t be omitted if the element is empty.)
  // A colgroup element’s start tag may be omitted if the first thing inside the colgroup element is a col element, and if the element is not immediately preceded by another colgroup element whose end tag has been omitted. (It can’t be omitted if the element is empty.)

  // Fix up the parent of the parser token
  parser_token.parent = this._tag_stack.get_parser_token();

  return result;
};

module.exports.Beautifier = Beautifier;

},{"../core/output":90,"../html/options":102,"../html/tokenizer":103}],101:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

var Beautifier = require('./beautifier').Beautifier,
  Options = require('./options').Options;

function style_html(html_source, options, js_beautify, css_beautify) {
  var beautifier = new Beautifier(html_source, options, js_beautify, css_beautify);
  return beautifier.beautify();
}

module.exports = style_html;
module.exports.defaultOptions = function() {
  return new Options();
};

},{"./beautifier":100,"./options":102}],102:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

var BaseOptions = require('../core/options').Options;

function Options(options) {
  BaseOptions.call(this, options, 'html');
  if (this.templating.length === 1 && this.templating[0] === 'auto') {
    this.templating = ['django', 'erb', 'handlebars', 'php'];
  }

  this.indent_inner_html = this._get_boolean('indent_inner_html');
  this.indent_body_inner_html = this._get_boolean('indent_body_inner_html', true);
  this.indent_head_inner_html = this._get_boolean('indent_head_inner_html', true);

  this.indent_handlebars = this._get_boolean('indent_handlebars', true);
  this.wrap_attributes = this._get_selection('wrap_attributes',
    ['auto', 'force', 'force-aligned', 'force-expand-multiline', 'aligned-multiple', 'preserve', 'preserve-aligned']);
  this.wrap_attributes_indent_size = this._get_number('wrap_attributes_indent_size', this.indent_size);
  this.extra_liners = this._get_array('extra_liners', ['head', 'body', '/html']);

  // Block vs inline elements
  // https://developer.mozilla.org/en-US/docs/Web/HTML/Block-level_elements
  // https://developer.mozilla.org/en-US/docs/Web/HTML/Inline_elements
  // https://www.w3.org/TR/html5/dom.html#phrasing-content
  this.inline = this._get_array('inline', [
    'a', 'abbr', 'area', 'audio', 'b', 'bdi', 'bdo', 'br', 'button', 'canvas', 'cite',
    'code', 'data', 'datalist', 'del', 'dfn', 'em', 'embed', 'i', 'iframe', 'img',
    'input', 'ins', 'kbd', 'keygen', 'label', 'map', 'mark', 'math', 'meter', 'noscript',
    'object', 'output', 'progress', 'q', 'ruby', 's', 'samp', /* 'script', */ 'select', 'small',
    'span', 'strong', 'sub', 'sup', 'svg', 'template', 'textarea', 'time', 'u', 'var',
    'video', 'wbr', 'text',
    // obsolete inline tags
    'acronym', 'big', 'strike', 'tt'
  ]);
  this.void_elements = this._get_array('void_elements', [
    // HTLM void elements - aka self-closing tags - aka singletons
    // https://www.w3.org/html/wg/drafts/html/master/syntax.html#void-elements
    'area', 'base', 'br', 'col', 'embed', 'hr', 'img', 'input', 'keygen',
    'link', 'menuitem', 'meta', 'param', 'source', 'track', 'wbr',
    // NOTE: Optional tags are too complex for a simple list
    // they are hard coded in _do_optional_end_element

    // Doctype and xml elements
    '!doctype', '?xml',

    // obsolete tags
    // basefont: https://www.computerhope.com/jargon/h/html-basefont-tag.htm
    // isndex: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/isindex
    'basefont', 'isindex'
  ]);
  this.unformatted = this._get_array('unformatted', []);
  this.content_unformatted = this._get_array('content_unformatted', [
    'pre', 'textarea'
  ]);
  this.unformatted_content_delimiter = this._get_characters('unformatted_content_delimiter');
  this.indent_scripts = this._get_selection('indent_scripts', ['normal', 'keep', 'separate']);

}
Options.prototype = new BaseOptions();



module.exports.Options = Options;

},{"../core/options":89}],103:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

var BaseTokenizer = require('../core/tokenizer').Tokenizer;
var BASETOKEN = require('../core/tokenizer').TOKEN;
var Directives = require('../core/directives').Directives;
var TemplatablePattern = require('../core/templatablepattern').TemplatablePattern;
var Pattern = require('../core/pattern').Pattern;

var TOKEN = {
  TAG_OPEN: 'TK_TAG_OPEN',
  TAG_CLOSE: 'TK_TAG_CLOSE',
  ATTRIBUTE: 'TK_ATTRIBUTE',
  EQUALS: 'TK_EQUALS',
  VALUE: 'TK_VALUE',
  COMMENT: 'TK_COMMENT',
  TEXT: 'TK_TEXT',
  UNKNOWN: 'TK_UNKNOWN',
  START: BASETOKEN.START,
  RAW: BASETOKEN.RAW,
  EOF: BASETOKEN.EOF
};

var directives_core = new Directives(/<\!--/, /-->/);

var Tokenizer = function(input_string, options) {
  BaseTokenizer.call(this, input_string, options);
  this._current_tag_name = '';

  // Words end at whitespace or when a tag starts
  // if we are indenting handlebars, they are considered tags
  var templatable_reader = new TemplatablePattern(this._input).read_options(this._options);
  var pattern_reader = new Pattern(this._input);

  this.__patterns = {
    word: templatable_reader.until(/[\n\r\t <]/),
    single_quote: templatable_reader.until_after(/'/),
    double_quote: templatable_reader.until_after(/"/),
    attribute: templatable_reader.until(/[\n\r\t =>]|\/>/),
    element_name: templatable_reader.until(/[\n\r\t >\/]/),

    handlebars_comment: pattern_reader.starting_with(/{{!--/).until_after(/--}}/),
    handlebars: pattern_reader.starting_with(/{{/).until_after(/}}/),
    handlebars_open: pattern_reader.until(/[\n\r\t }]/),
    handlebars_raw_close: pattern_reader.until(/}}/),
    comment: pattern_reader.starting_with(/<!--/).until_after(/-->/),
    cdata: pattern_reader.starting_with(/<!\[CDATA\[/).until_after(/]]>/),
    // https://en.wikipedia.org/wiki/Conditional_comment
    conditional_comment: pattern_reader.starting_with(/<!\[/).until_after(/]>/),
    processing: pattern_reader.starting_with(/<\?/).until_after(/\?>/)
  };

  if (this._options.indent_handlebars) {
    this.__patterns.word = this.__patterns.word.exclude('handlebars');
  }

  this._unformatted_content_delimiter = null;

  if (this._options.unformatted_content_delimiter) {
    var literal_regexp = this._input.get_literal_regexp(this._options.unformatted_content_delimiter);
    this.__patterns.unformatted_content_delimiter =
      pattern_reader.matching(literal_regexp)
      .until_after(literal_regexp);
  }
};
Tokenizer.prototype = new BaseTokenizer();

Tokenizer.prototype._is_comment = function(current_token) { // jshint unused:false
  return false; //current_token.type === TOKEN.COMMENT || current_token.type === TOKEN.UNKNOWN;
};

Tokenizer.prototype._is_opening = function(current_token) {
  return current_token.type === TOKEN.TAG_OPEN;
};

Tokenizer.prototype._is_closing = function(current_token, open_token) {
  return current_token.type === TOKEN.TAG_CLOSE &&
    (open_token && (
      ((current_token.text === '>' || current_token.text === '/>') && open_token.text[0] === '<') ||
      (current_token.text === '}}' && open_token.text[0] === '{' && open_token.text[1] === '{')));
};

Tokenizer.prototype._reset = function() {
  this._current_tag_name = '';
};

Tokenizer.prototype._get_next_token = function(previous_token, open_token) { // jshint unused:false
  var token = null;
  this._readWhitespace();
  var c = this._input.peek();

  if (c === null) {
    return this._create_token(TOKEN.EOF, '');
  }

  token = token || this._read_open_handlebars(c, open_token);
  token = token || this._read_attribute(c, previous_token, open_token);
  token = token || this._read_close(c, open_token);
  token = token || this._read_raw_content(c, previous_token, open_token);
  token = token || this._read_content_word(c);
  token = token || this._read_comment_or_cdata(c);
  token = token || this._read_processing(c);
  token = token || this._read_open(c, open_token);
  token = token || this._create_token(TOKEN.UNKNOWN, this._input.next());

  return token;
};

Tokenizer.prototype._read_comment_or_cdata = function(c) { // jshint unused:false
  var token = null;
  var resulting_string = null;
  var directives = null;

  if (c === '<') {
    var peek1 = this._input.peek(1);
    // We treat all comments as literals, even more than preformatted tags
    // we only look for the appropriate closing marker
    if (peek1 === '!') {
      resulting_string = this.__patterns.comment.read();

      // only process directive on html comments
      if (resulting_string) {
        directives = directives_core.get_directives(resulting_string);
        if (directives && directives.ignore === 'start') {
          resulting_string += directives_core.readIgnored(this._input);
        }
      } else {
        resulting_string = this.__patterns.cdata.read();
      }
    }

    if (resulting_string) {
      token = this._create_token(TOKEN.COMMENT, resulting_string);
      token.directives = directives;
    }
  }

  return token;
};

Tokenizer.prototype._read_processing = function(c) { // jshint unused:false
  var token = null;
  var resulting_string = null;
  var directives = null;

  if (c === '<') {
    var peek1 = this._input.peek(1);
    if (peek1 === '!' || peek1 === '?') {
      resulting_string = this.__patterns.conditional_comment.read();
      resulting_string = resulting_string || this.__patterns.processing.read();
    }

    if (resulting_string) {
      token = this._create_token(TOKEN.COMMENT, resulting_string);
      token.directives = directives;
    }
  }

  return token;
};

Tokenizer.prototype._read_open = function(c, open_token) {
  var resulting_string = null;
  var token = null;
  if (!open_token) {
    if (c === '<') {

      resulting_string = this._input.next();
      if (this._input.peek() === '/') {
        resulting_string += this._input.next();
      }
      resulting_string += this.__patterns.element_name.read();
      token = this._create_token(TOKEN.TAG_OPEN, resulting_string);
    }
  }
  return token;
};

Tokenizer.prototype._read_open_handlebars = function(c, open_token) {
  var resulting_string = null;
  var token = null;
  if (!open_token) {
    if (this._options.indent_handlebars && c === '{' && this._input.peek(1) === '{') {
      if (this._input.peek(2) === '!') {
        resulting_string = this.__patterns.handlebars_comment.read();
        resulting_string = resulting_string || this.__patterns.handlebars.read();
        token = this._create_token(TOKEN.COMMENT, resulting_string);
      } else {
        resulting_string = this.__patterns.handlebars_open.read();
        token = this._create_token(TOKEN.TAG_OPEN, resulting_string);
      }
    }
  }
  return token;
};


Tokenizer.prototype._read_close = function(c, open_token) {
  var resulting_string = null;
  var token = null;
  if (open_token) {
    if (open_token.text[0] === '<' && (c === '>' || (c === '/' && this._input.peek(1) === '>'))) {
      resulting_string = this._input.next();
      if (c === '/') { //  for close tag "/>"
        resulting_string += this._input.next();
      }
      token = this._create_token(TOKEN.TAG_CLOSE, resulting_string);
    } else if (open_token.text[0] === '{' && c === '}' && this._input.peek(1) === '}') {
      this._input.next();
      this._input.next();
      token = this._create_token(TOKEN.TAG_CLOSE, '}}');
    }
  }

  return token;
};

Tokenizer.prototype._read_attribute = function(c, previous_token, open_token) {
  var token = null;
  var resulting_string = '';
  if (open_token && open_token.text[0] === '<') {

    if (c === '=') {
      token = this._create_token(TOKEN.EQUALS, this._input.next());
    } else if (c === '"' || c === "'") {
      var content = this._input.next();
      if (c === '"') {
        content += this.__patterns.double_quote.read();
      } else {
        content += this.__patterns.single_quote.read();
      }
      token = this._create_token(TOKEN.VALUE, content);
    } else {
      resulting_string = this.__patterns.attribute.read();

      if (resulting_string) {
        if (previous_token.type === TOKEN.EQUALS) {
          token = this._create_token(TOKEN.VALUE, resulting_string);
        } else {
          token = this._create_token(TOKEN.ATTRIBUTE, resulting_string);
        }
      }
    }
  }
  return token;
};

Tokenizer.prototype._is_content_unformatted = function(tag_name) {
  // void_elements have no content and so cannot have unformatted content
  // script and style tags should always be read as unformatted content
  // finally content_unformatted and unformatted element contents are unformatted
  return this._options.void_elements.indexOf(tag_name) === -1 &&
    (this._options.content_unformatted.indexOf(tag_name) !== -1 ||
      this._options.unformatted.indexOf(tag_name) !== -1);
};


Tokenizer.prototype._read_raw_content = function(c, previous_token, open_token) { // jshint unused:false
  var resulting_string = '';
  if (open_token && open_token.text[0] === '{') {
    resulting_string = this.__patterns.handlebars_raw_close.read();
  } else if (previous_token.type === TOKEN.TAG_CLOSE &&
    previous_token.opened.text[0] === '<' && previous_token.text[0] !== '/') {
    // ^^ empty tag has no content 
    var tag_name = previous_token.opened.text.substr(1).toLowerCase();
    if (tag_name === 'script' || tag_name === 'style') {
      // Script and style tags are allowed to have comments wrapping their content
      // or just have regular content.
      var token = this._read_comment_or_cdata(c);
      if (token) {
        token.type = TOKEN.TEXT;
        return token;
      }
      resulting_string = this._input.readUntil(new RegExp('</' + tag_name + '[\\n\\r\\t ]*?>', 'ig'));
    } else if (this._is_content_unformatted(tag_name)) {

      resulting_string = this._input.readUntil(new RegExp('</' + tag_name + '[\\n\\r\\t ]*?>', 'ig'));
    }
  }

  if (resulting_string) {
    return this._create_token(TOKEN.TEXT, resulting_string);
  }

  return null;
};

Tokenizer.prototype._read_content_word = function(c) {
  var resulting_string = '';
  if (this._options.unformatted_content_delimiter) {
    if (c === this._options.unformatted_content_delimiter[0]) {
      resulting_string = this.__patterns.unformatted_content_delimiter.read();
    }
  }

  if (!resulting_string) {
    resulting_string = this.__patterns.word.read();
  }
  if (resulting_string) {
    return this._create_token(TOKEN.TEXT, resulting_string);
  }
};

module.exports.Tokenizer = Tokenizer;
module.exports.TOKEN = TOKEN;

},{"../core/directives":87,"../core/pattern":91,"../core/templatablepattern":92,"../core/tokenizer":94}],104:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

var js_beautify = require('./javascript/index');
var css_beautify = require('./css/index');
var html_beautify = require('./html/index');

function style_html(html_source, options, js, css) {
  js = js || js_beautify;
  css = css || css_beautify;
  return html_beautify(html_source, options, js, css);
}
style_html.defaultOptions = html_beautify.defaultOptions;

module.exports.js = js_beautify;
module.exports.css = css_beautify;
module.exports.html = style_html;

},{"./css/index":98,"./html/index":101,"./javascript/index":107}],105:[function(require,module,exports){
/* jshint node: true, curly: false */
// Parts of this section of code is taken from acorn.
//
// Acorn was written by Marijn Haverbeke and released under an MIT
// license. The Unicode regexps (for identifiers and whitespace) were
// taken from [Esprima](http://esprima.org) by Ariya Hidayat.
//
// Git repositories for Acorn are available at
//
//     http://marijnhaverbeke.nl/git/acorn
//     https://github.com/marijnh/acorn.git

// ## Character categories


'use strict';

// acorn used char codes to squeeze the last bit of performance out
// Beautifier is okay without that, so we're using regex
// permit # (23), $ (36), and @ (64). @ is used in ES7 decorators.
// 65 through 91 are uppercase letters.
// permit _ (95).
// 97 through 123 are lowercase letters.
var baseASCIIidentifierStartChars = "\\x23\\x24\\x40\\x41-\\x5a\\x5f\\x61-\\x7a";

// inside an identifier @ is not allowed but 0-9 are.
var baseASCIIidentifierChars = "\\x24\\x30-\\x39\\x41-\\x5a\\x5f\\x61-\\x7a";

// Big ugly regular expressions that match characters in the
// whitespace, identifier, and identifier-start categories. These
// are only applied when a character is found to actually have a
// code point above 128.
var nonASCIIidentifierStartChars = "\\xaa\\xb5\\xba\\xc0-\\xd6\\xd8-\\xf6\\xf8-\\u02c1\\u02c6-\\u02d1\\u02e0-\\u02e4\\u02ec\\u02ee\\u0370-\\u0374\\u0376\\u0377\\u037a-\\u037d\\u0386\\u0388-\\u038a\\u038c\\u038e-\\u03a1\\u03a3-\\u03f5\\u03f7-\\u0481\\u048a-\\u0527\\u0531-\\u0556\\u0559\\u0561-\\u0587\\u05d0-\\u05ea\\u05f0-\\u05f2\\u0620-\\u064a\\u066e\\u066f\\u0671-\\u06d3\\u06d5\\u06e5\\u06e6\\u06ee\\u06ef\\u06fa-\\u06fc\\u06ff\\u0710\\u0712-\\u072f\\u074d-\\u07a5\\u07b1\\u07ca-\\u07ea\\u07f4\\u07f5\\u07fa\\u0800-\\u0815\\u081a\\u0824\\u0828\\u0840-\\u0858\\u08a0\\u08a2-\\u08ac\\u0904-\\u0939\\u093d\\u0950\\u0958-\\u0961\\u0971-\\u0977\\u0979-\\u097f\\u0985-\\u098c\\u098f\\u0990\\u0993-\\u09a8\\u09aa-\\u09b0\\u09b2\\u09b6-\\u09b9\\u09bd\\u09ce\\u09dc\\u09dd\\u09df-\\u09e1\\u09f0\\u09f1\\u0a05-\\u0a0a\\u0a0f\\u0a10\\u0a13-\\u0a28\\u0a2a-\\u0a30\\u0a32\\u0a33\\u0a35\\u0a36\\u0a38\\u0a39\\u0a59-\\u0a5c\\u0a5e\\u0a72-\\u0a74\\u0a85-\\u0a8d\\u0a8f-\\u0a91\\u0a93-\\u0aa8\\u0aaa-\\u0ab0\\u0ab2\\u0ab3\\u0ab5-\\u0ab9\\u0abd\\u0ad0\\u0ae0\\u0ae1\\u0b05-\\u0b0c\\u0b0f\\u0b10\\u0b13-\\u0b28\\u0b2a-\\u0b30\\u0b32\\u0b33\\u0b35-\\u0b39\\u0b3d\\u0b5c\\u0b5d\\u0b5f-\\u0b61\\u0b71\\u0b83\\u0b85-\\u0b8a\\u0b8e-\\u0b90\\u0b92-\\u0b95\\u0b99\\u0b9a\\u0b9c\\u0b9e\\u0b9f\\u0ba3\\u0ba4\\u0ba8-\\u0baa\\u0bae-\\u0bb9\\u0bd0\\u0c05-\\u0c0c\\u0c0e-\\u0c10\\u0c12-\\u0c28\\u0c2a-\\u0c33\\u0c35-\\u0c39\\u0c3d\\u0c58\\u0c59\\u0c60\\u0c61\\u0c85-\\u0c8c\\u0c8e-\\u0c90\\u0c92-\\u0ca8\\u0caa-\\u0cb3\\u0cb5-\\u0cb9\\u0cbd\\u0cde\\u0ce0\\u0ce1\\u0cf1\\u0cf2\\u0d05-\\u0d0c\\u0d0e-\\u0d10\\u0d12-\\u0d3a\\u0d3d\\u0d4e\\u0d60\\u0d61\\u0d7a-\\u0d7f\\u0d85-\\u0d96\\u0d9a-\\u0db1\\u0db3-\\u0dbb\\u0dbd\\u0dc0-\\u0dc6\\u0e01-\\u0e30\\u0e32\\u0e33\\u0e40-\\u0e46\\u0e81\\u0e82\\u0e84\\u0e87\\u0e88\\u0e8a\\u0e8d\\u0e94-\\u0e97\\u0e99-\\u0e9f\\u0ea1-\\u0ea3\\u0ea5\\u0ea7\\u0eaa\\u0eab\\u0ead-\\u0eb0\\u0eb2\\u0eb3\\u0ebd\\u0ec0-\\u0ec4\\u0ec6\\u0edc-\\u0edf\\u0f00\\u0f40-\\u0f47\\u0f49-\\u0f6c\\u0f88-\\u0f8c\\u1000-\\u102a\\u103f\\u1050-\\u1055\\u105a-\\u105d\\u1061\\u1065\\u1066\\u106e-\\u1070\\u1075-\\u1081\\u108e\\u10a0-\\u10c5\\u10c7\\u10cd\\u10d0-\\u10fa\\u10fc-\\u1248\\u124a-\\u124d\\u1250-\\u1256\\u1258\\u125a-\\u125d\\u1260-\\u1288\\u128a-\\u128d\\u1290-\\u12b0\\u12b2-\\u12b5\\u12b8-\\u12be\\u12c0\\u12c2-\\u12c5\\u12c8-\\u12d6\\u12d8-\\u1310\\u1312-\\u1315\\u1318-\\u135a\\u1380-\\u138f\\u13a0-\\u13f4\\u1401-\\u166c\\u166f-\\u167f\\u1681-\\u169a\\u16a0-\\u16ea\\u16ee-\\u16f0\\u1700-\\u170c\\u170e-\\u1711\\u1720-\\u1731\\u1740-\\u1751\\u1760-\\u176c\\u176e-\\u1770\\u1780-\\u17b3\\u17d7\\u17dc\\u1820-\\u1877\\u1880-\\u18a8\\u18aa\\u18b0-\\u18f5\\u1900-\\u191c\\u1950-\\u196d\\u1970-\\u1974\\u1980-\\u19ab\\u19c1-\\u19c7\\u1a00-\\u1a16\\u1a20-\\u1a54\\u1aa7\\u1b05-\\u1b33\\u1b45-\\u1b4b\\u1b83-\\u1ba0\\u1bae\\u1baf\\u1bba-\\u1be5\\u1c00-\\u1c23\\u1c4d-\\u1c4f\\u1c5a-\\u1c7d\\u1ce9-\\u1cec\\u1cee-\\u1cf1\\u1cf5\\u1cf6\\u1d00-\\u1dbf\\u1e00-\\u1f15\\u1f18-\\u1f1d\\u1f20-\\u1f45\\u1f48-\\u1f4d\\u1f50-\\u1f57\\u1f59\\u1f5b\\u1f5d\\u1f5f-\\u1f7d\\u1f80-\\u1fb4\\u1fb6-\\u1fbc\\u1fbe\\u1fc2-\\u1fc4\\u1fc6-\\u1fcc\\u1fd0-\\u1fd3\\u1fd6-\\u1fdb\\u1fe0-\\u1fec\\u1ff2-\\u1ff4\\u1ff6-\\u1ffc\\u2071\\u207f\\u2090-\\u209c\\u2102\\u2107\\u210a-\\u2113\\u2115\\u2119-\\u211d\\u2124\\u2126\\u2128\\u212a-\\u212d\\u212f-\\u2139\\u213c-\\u213f\\u2145-\\u2149\\u214e\\u2160-\\u2188\\u2c00-\\u2c2e\\u2c30-\\u2c5e\\u2c60-\\u2ce4\\u2ceb-\\u2cee\\u2cf2\\u2cf3\\u2d00-\\u2d25\\u2d27\\u2d2d\\u2d30-\\u2d67\\u2d6f\\u2d80-\\u2d96\\u2da0-\\u2da6\\u2da8-\\u2dae\\u2db0-\\u2db6\\u2db8-\\u2dbe\\u2dc0-\\u2dc6\\u2dc8-\\u2dce\\u2dd0-\\u2dd6\\u2dd8-\\u2dde\\u2e2f\\u3005-\\u3007\\u3021-\\u3029\\u3031-\\u3035\\u3038-\\u303c\\u3041-\\u3096\\u309d-\\u309f\\u30a1-\\u30fa\\u30fc-\\u30ff\\u3105-\\u312d\\u3131-\\u318e\\u31a0-\\u31ba\\u31f0-\\u31ff\\u3400-\\u4db5\\u4e00-\\u9fcc\\ua000-\\ua48c\\ua4d0-\\ua4fd\\ua500-\\ua60c\\ua610-\\ua61f\\ua62a\\ua62b\\ua640-\\ua66e\\ua67f-\\ua697\\ua6a0-\\ua6ef\\ua717-\\ua71f\\ua722-\\ua788\\ua78b-\\ua78e\\ua790-\\ua793\\ua7a0-\\ua7aa\\ua7f8-\\ua801\\ua803-\\ua805\\ua807-\\ua80a\\ua80c-\\ua822\\ua840-\\ua873\\ua882-\\ua8b3\\ua8f2-\\ua8f7\\ua8fb\\ua90a-\\ua925\\ua930-\\ua946\\ua960-\\ua97c\\ua984-\\ua9b2\\ua9cf\\uaa00-\\uaa28\\uaa40-\\uaa42\\uaa44-\\uaa4b\\uaa60-\\uaa76\\uaa7a\\uaa80-\\uaaaf\\uaab1\\uaab5\\uaab6\\uaab9-\\uaabd\\uaac0\\uaac2\\uaadb-\\uaadd\\uaae0-\\uaaea\\uaaf2-\\uaaf4\\uab01-\\uab06\\uab09-\\uab0e\\uab11-\\uab16\\uab20-\\uab26\\uab28-\\uab2e\\uabc0-\\uabe2\\uac00-\\ud7a3\\ud7b0-\\ud7c6\\ud7cb-\\ud7fb\\uf900-\\ufa6d\\ufa70-\\ufad9\\ufb00-\\ufb06\\ufb13-\\ufb17\\ufb1d\\ufb1f-\\ufb28\\ufb2a-\\ufb36\\ufb38-\\ufb3c\\ufb3e\\ufb40\\ufb41\\ufb43\\ufb44\\ufb46-\\ufbb1\\ufbd3-\\ufd3d\\ufd50-\\ufd8f\\ufd92-\\ufdc7\\ufdf0-\\ufdfb\\ufe70-\\ufe74\\ufe76-\\ufefc\\uff21-\\uff3a\\uff41-\\uff5a\\uff66-\\uffbe\\uffc2-\\uffc7\\uffca-\\uffcf\\uffd2-\\uffd7\\uffda-\\uffdc";
var nonASCIIidentifierChars = "\\u0300-\\u036f\\u0483-\\u0487\\u0591-\\u05bd\\u05bf\\u05c1\\u05c2\\u05c4\\u05c5\\u05c7\\u0610-\\u061a\\u0620-\\u0649\\u0672-\\u06d3\\u06e7-\\u06e8\\u06fb-\\u06fc\\u0730-\\u074a\\u0800-\\u0814\\u081b-\\u0823\\u0825-\\u0827\\u0829-\\u082d\\u0840-\\u0857\\u08e4-\\u08fe\\u0900-\\u0903\\u093a-\\u093c\\u093e-\\u094f\\u0951-\\u0957\\u0962-\\u0963\\u0966-\\u096f\\u0981-\\u0983\\u09bc\\u09be-\\u09c4\\u09c7\\u09c8\\u09d7\\u09df-\\u09e0\\u0a01-\\u0a03\\u0a3c\\u0a3e-\\u0a42\\u0a47\\u0a48\\u0a4b-\\u0a4d\\u0a51\\u0a66-\\u0a71\\u0a75\\u0a81-\\u0a83\\u0abc\\u0abe-\\u0ac5\\u0ac7-\\u0ac9\\u0acb-\\u0acd\\u0ae2-\\u0ae3\\u0ae6-\\u0aef\\u0b01-\\u0b03\\u0b3c\\u0b3e-\\u0b44\\u0b47\\u0b48\\u0b4b-\\u0b4d\\u0b56\\u0b57\\u0b5f-\\u0b60\\u0b66-\\u0b6f\\u0b82\\u0bbe-\\u0bc2\\u0bc6-\\u0bc8\\u0bca-\\u0bcd\\u0bd7\\u0be6-\\u0bef\\u0c01-\\u0c03\\u0c46-\\u0c48\\u0c4a-\\u0c4d\\u0c55\\u0c56\\u0c62-\\u0c63\\u0c66-\\u0c6f\\u0c82\\u0c83\\u0cbc\\u0cbe-\\u0cc4\\u0cc6-\\u0cc8\\u0cca-\\u0ccd\\u0cd5\\u0cd6\\u0ce2-\\u0ce3\\u0ce6-\\u0cef\\u0d02\\u0d03\\u0d46-\\u0d48\\u0d57\\u0d62-\\u0d63\\u0d66-\\u0d6f\\u0d82\\u0d83\\u0dca\\u0dcf-\\u0dd4\\u0dd6\\u0dd8-\\u0ddf\\u0df2\\u0df3\\u0e34-\\u0e3a\\u0e40-\\u0e45\\u0e50-\\u0e59\\u0eb4-\\u0eb9\\u0ec8-\\u0ecd\\u0ed0-\\u0ed9\\u0f18\\u0f19\\u0f20-\\u0f29\\u0f35\\u0f37\\u0f39\\u0f41-\\u0f47\\u0f71-\\u0f84\\u0f86-\\u0f87\\u0f8d-\\u0f97\\u0f99-\\u0fbc\\u0fc6\\u1000-\\u1029\\u1040-\\u1049\\u1067-\\u106d\\u1071-\\u1074\\u1082-\\u108d\\u108f-\\u109d\\u135d-\\u135f\\u170e-\\u1710\\u1720-\\u1730\\u1740-\\u1750\\u1772\\u1773\\u1780-\\u17b2\\u17dd\\u17e0-\\u17e9\\u180b-\\u180d\\u1810-\\u1819\\u1920-\\u192b\\u1930-\\u193b\\u1951-\\u196d\\u19b0-\\u19c0\\u19c8-\\u19c9\\u19d0-\\u19d9\\u1a00-\\u1a15\\u1a20-\\u1a53\\u1a60-\\u1a7c\\u1a7f-\\u1a89\\u1a90-\\u1a99\\u1b46-\\u1b4b\\u1b50-\\u1b59\\u1b6b-\\u1b73\\u1bb0-\\u1bb9\\u1be6-\\u1bf3\\u1c00-\\u1c22\\u1c40-\\u1c49\\u1c5b-\\u1c7d\\u1cd0-\\u1cd2\\u1d00-\\u1dbe\\u1e01-\\u1f15\\u200c\\u200d\\u203f\\u2040\\u2054\\u20d0-\\u20dc\\u20e1\\u20e5-\\u20f0\\u2d81-\\u2d96\\u2de0-\\u2dff\\u3021-\\u3028\\u3099\\u309a\\ua640-\\ua66d\\ua674-\\ua67d\\ua69f\\ua6f0-\\ua6f1\\ua7f8-\\ua800\\ua806\\ua80b\\ua823-\\ua827\\ua880-\\ua881\\ua8b4-\\ua8c4\\ua8d0-\\ua8d9\\ua8f3-\\ua8f7\\ua900-\\ua909\\ua926-\\ua92d\\ua930-\\ua945\\ua980-\\ua983\\ua9b3-\\ua9c0\\uaa00-\\uaa27\\uaa40-\\uaa41\\uaa4c-\\uaa4d\\uaa50-\\uaa59\\uaa7b\\uaae0-\\uaae9\\uaaf2-\\uaaf3\\uabc0-\\uabe1\\uabec\\uabed\\uabf0-\\uabf9\\ufb20-\\ufb28\\ufe00-\\ufe0f\\ufe20-\\ufe26\\ufe33\\ufe34\\ufe4d-\\ufe4f\\uff10-\\uff19\\uff3f";
//var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]");
//var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]");

var identifierStart = "(?:\\\\u[0-9a-fA-F]{4}|[" + baseASCIIidentifierStartChars + nonASCIIidentifierStartChars + "])";
var identifierChars = "(?:\\\\u[0-9a-fA-F]{4}|[" + baseASCIIidentifierChars + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "])*";

exports.identifier = new RegExp(identifierStart + identifierChars, 'g');
exports.identifierStart = new RegExp(identifierStart);
exports.identifierMatch = new RegExp("(?:\\\\u[0-9a-fA-F]{4}|[" + baseASCIIidentifierChars + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "])+");

var nonASCIIwhitespace = /[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]/; // jshint ignore:line

// Whether a single character denotes a newline.

exports.newline = /[\n\r\u2028\u2029]/;

// Matches a whole line break (where CRLF is considered a single
// line break). Used to count lines.

// in javascript, these two differ
// in python they are the same, different methods are called on them
exports.lineBreak = new RegExp('\r\n|' + exports.newline.source);
exports.allLineBreaks = new RegExp(exports.lineBreak.source, 'g');

},{}],106:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

var Output = require('../core/output').Output;
var Token = require('../core/token').Token;
var acorn = require('./acorn');
var Options = require('./options').Options;
var Tokenizer = require('./tokenizer').Tokenizer;
var line_starters = require('./tokenizer').line_starters;
var positionable_operators = require('./tokenizer').positionable_operators;
var TOKEN = require('./tokenizer').TOKEN;


function in_array(what, arr) {
  return arr.indexOf(what) !== -1;
}

function ltrim(s) {
  return s.replace(/^\s+/g, '');
}

function generateMapFromStrings(list) {
  var result = {};
  for (var x = 0; x < list.length; x++) {
    // make the mapped names underscored instead of dash
    result[list[x].replace(/-/g, '_')] = list[x];
  }
  return result;
}

function reserved_word(token, word) {
  return token && token.type === TOKEN.RESERVED && token.text === word;
}

function reserved_array(token, words) {
  return token && token.type === TOKEN.RESERVED && in_array(token.text, words);
}
// Unsure of what they mean, but they work. Worth cleaning up in future.
var special_words = ['case', 'return', 'do', 'if', 'throw', 'else', 'await', 'break', 'continue', 'async'];

var validPositionValues = ['before-newline', 'after-newline', 'preserve-newline'];

// Generate map from array
var OPERATOR_POSITION = generateMapFromStrings(validPositionValues);

var OPERATOR_POSITION_BEFORE_OR_PRESERVE = [OPERATOR_POSITION.before_newline, OPERATOR_POSITION.preserve_newline];

var MODE = {
  BlockStatement: 'BlockStatement', // 'BLOCK'
  Statement: 'Statement', // 'STATEMENT'
  ObjectLiteral: 'ObjectLiteral', // 'OBJECT',
  ArrayLiteral: 'ArrayLiteral', //'[EXPRESSION]',
  ForInitializer: 'ForInitializer', //'(FOR-EXPRESSION)',
  Conditional: 'Conditional', //'(COND-EXPRESSION)',
  Expression: 'Expression' //'(EXPRESSION)'
};

function remove_redundant_indentation(output, frame) {
  // This implementation is effective but has some issues:
  //     - can cause line wrap to happen too soon due to indent removal
  //           after wrap points are calculated
  // These issues are minor compared to ugly indentation.

  if (frame.multiline_frame ||
    frame.mode === MODE.ForInitializer ||
    frame.mode === MODE.Conditional) {
    return;
  }

  // remove one indent from each line inside this section
  output.remove_indent(frame.start_line_index);
}

// we could use just string.split, but
// IE doesn't like returning empty strings
function split_linebreaks(s) {
  //return s.split(/\x0d\x0a|\x0a/);

  s = s.replace(acorn.allLineBreaks, '\n');
  var out = [],
    idx = s.indexOf("\n");
  while (idx !== -1) {
    out.push(s.substring(0, idx));
    s = s.substring(idx + 1);
    idx = s.indexOf("\n");
  }
  if (s.length) {
    out.push(s);
  }
  return out;
}

function is_array(mode) {
  return mode === MODE.ArrayLiteral;
}

function is_expression(mode) {
  return in_array(mode, [MODE.Expression, MODE.ForInitializer, MODE.Conditional]);
}

function all_lines_start_with(lines, c) {
  for (var i = 0; i < lines.length; i++) {
    var line = lines[i].trim();
    if (line.charAt(0) !== c) {
      return false;
    }
  }
  return true;
}

function each_line_matches_indent(lines, indent) {
  var i = 0,
    len = lines.length,
    line;
  for (; i < len; i++) {
    line = lines[i];
    // allow empty lines to pass through
    if (line && line.indexOf(indent) !== 0) {
      return false;
    }
  }
  return true;
}


function Beautifier(source_text, options) {
  options = options || {};
  this._source_text = source_text || '';

  this._output = null;
  this._tokens = null;
  this._last_last_text = null;
  this._flags = null;
  this._previous_flags = null;

  this._flag_store = null;
  this._options = new Options(options);
}

Beautifier.prototype.create_flags = function(flags_base, mode) {
  var next_indent_level = 0;
  if (flags_base) {
    next_indent_level = flags_base.indentation_level;
    if (!this._output.just_added_newline() &&
      flags_base.line_indent_level > next_indent_level) {
      next_indent_level = flags_base.line_indent_level;
    }
  }

  var next_flags = {
    mode: mode,
    parent: flags_base,
    last_token: flags_base ? flags_base.last_token : new Token(TOKEN.START_BLOCK, ''), // last token text
    last_word: flags_base ? flags_base.last_word : '', // last TOKEN.WORD passed
    declaration_statement: false,
    declaration_assignment: false,
    multiline_frame: false,
    inline_frame: false,
    if_block: false,
    else_block: false,
    do_block: false,
    do_while: false,
    import_block: false,
    in_case_statement: false, // switch(..){ INSIDE HERE }
    in_case: false, // we're on the exact line with "case 0:"
    case_body: false, // the indented case-action block
    indentation_level: next_indent_level,
    alignment: 0,
    line_indent_level: flags_base ? flags_base.line_indent_level : next_indent_level,
    start_line_index: this._output.get_line_number(),
    ternary_depth: 0
  };
  return next_flags;
};

Beautifier.prototype._reset = function(source_text) {
  var baseIndentString = source_text.match(/^[\t ]*/)[0];

  this._last_last_text = ''; // pre-last token text
  this._output = new Output(this._options, baseIndentString);

  // If testing the ignore directive, start with output disable set to true
  this._output.raw = this._options.test_output_raw;


  // Stack of parsing/formatting states, including MODE.
  // We tokenize, parse, and output in an almost purely a forward-only stream of token input
  // and formatted output.  This makes the beautifier less accurate than full parsers
  // but also far more tolerant of syntax errors.
  //
  // For example, the default mode is MODE.BlockStatement. If we see a '{' we push a new frame of type
  // MODE.BlockStatement on the the stack, even though it could be object literal.  If we later
  // encounter a ":", we'll switch to to MODE.ObjectLiteral.  If we then see a ";",
  // most full parsers would die, but the beautifier gracefully falls back to
  // MODE.BlockStatement and continues on.
  this._flag_store = [];
  this.set_mode(MODE.BlockStatement);
  var tokenizer = new Tokenizer(source_text, this._options);
  this._tokens = tokenizer.tokenize();
  return source_text;
};

Beautifier.prototype.beautify = function() {
  // if disabled, return the input unchanged.
  if (this._options.disabled) {
    return this._source_text;
  }

  var sweet_code;
  var source_text = this._reset(this._source_text);

  var eol = this._options.eol;
  if (this._options.eol === 'auto') {
    eol = '\n';
    if (source_text && acorn.lineBreak.test(source_text || '')) {
      eol = source_text.match(acorn.lineBreak)[0];
    }
  }

  var current_token = this._tokens.next();
  while (current_token) {
    this.handle_token(current_token);

    this._last_last_text = this._flags.last_token.text;
    this._flags.last_token = current_token;

    current_token = this._tokens.next();
  }

  sweet_code = this._output.get_code(eol);

  return sweet_code;
};

Beautifier.prototype.handle_token = function(current_token, preserve_statement_flags) {
  if (current_token.type === TOKEN.START_EXPR) {
    this.handle_start_expr(current_token);
  } else if (current_token.type === TOKEN.END_EXPR) {
    this.handle_end_expr(current_token);
  } else if (current_token.type === TOKEN.START_BLOCK) {
    this.handle_start_block(current_token);
  } else if (current_token.type === TOKEN.END_BLOCK) {
    this.handle_end_block(current_token);
  } else if (current_token.type === TOKEN.WORD) {
    this.handle_word(current_token);
  } else if (current_token.type === TOKEN.RESERVED) {
    this.handle_word(current_token);
  } else if (current_token.type === TOKEN.SEMICOLON) {
    this.handle_semicolon(current_token);
  } else if (current_token.type === TOKEN.STRING) {
    this.handle_string(current_token);
  } else if (current_token.type === TOKEN.EQUALS) {
    this.handle_equals(current_token);
  } else if (current_token.type === TOKEN.OPERATOR) {
    this.handle_operator(current_token);
  } else if (current_token.type === TOKEN.COMMA) {
    this.handle_comma(current_token);
  } else if (current_token.type === TOKEN.BLOCK_COMMENT) {
    this.handle_block_comment(current_token, preserve_statement_flags);
  } else if (current_token.type === TOKEN.COMMENT) {
    this.handle_comment(current_token, preserve_statement_flags);
  } else if (current_token.type === TOKEN.DOT) {
    this.handle_dot(current_token);
  } else if (current_token.type === TOKEN.EOF) {
    this.handle_eof(current_token);
  } else if (current_token.type === TOKEN.UNKNOWN) {
    this.handle_unknown(current_token, preserve_statement_flags);
  } else {
    this.handle_unknown(current_token, preserve_statement_flags);
  }
};

Beautifier.prototype.handle_whitespace_and_comments = function(current_token, preserve_statement_flags) {
  var newlines = current_token.newlines;
  var keep_whitespace = this._options.keep_array_indentation && is_array(this._flags.mode);

  if (current_token.comments_before) {
    var comment_token = current_token.comments_before.next();
    while (comment_token) {
      // The cleanest handling of inline comments is to treat them as though they aren't there.
      // Just continue formatting and the behavior should be logical.
      // Also ignore unknown tokens.  Again, this should result in better behavior.
      this.handle_whitespace_and_comments(comment_token, preserve_statement_flags);
      this.handle_token(comment_token, preserve_statement_flags);
      comment_token = current_token.comments_before.next();
    }
  }

  if (keep_whitespace) {
    for (var i = 0; i < newlines; i += 1) {
      this.print_newline(i > 0, preserve_statement_flags);
    }
  } else {
    if (this._options.max_preserve_newlines && newlines > this._options.max_preserve_newlines) {
      newlines = this._options.max_preserve_newlines;
    }

    if (this._options.preserve_newlines) {
      if (newlines > 1) {
        this.print_newline(false, preserve_statement_flags);
        for (var j = 1; j < newlines; j += 1) {
          this.print_newline(true, preserve_statement_flags);
        }
      }
    }
  }

};

var newline_restricted_tokens = ['async', 'break', 'continue', 'return', 'throw', 'yield'];

Beautifier.prototype.allow_wrap_or_preserved_newline = function(current_token, force_linewrap) {
  force_linewrap = (force_linewrap === undefined) ? false : force_linewrap;

  // Never wrap the first token on a line
  if (this._output.just_added_newline()) {
    return;
  }

  var shouldPreserveOrForce = (this._options.preserve_newlines && current_token.newlines) || force_linewrap;
  var operatorLogicApplies = in_array(this._flags.last_token.text, positionable_operators) ||
    in_array(current_token.text, positionable_operators);

  if (operatorLogicApplies) {
    var shouldPrintOperatorNewline = (
        in_array(this._flags.last_token.text, positionable_operators) &&
        in_array(this._options.operator_position, OPERATOR_POSITION_BEFORE_OR_PRESERVE)
      ) ||
      in_array(current_token.text, positionable_operators);
    shouldPreserveOrForce = shouldPreserveOrForce && shouldPrintOperatorNewline;
  }

  if (shouldPreserveOrForce) {
    this.print_newline(false, true);
  } else if (this._options.wrap_line_length) {
    if (reserved_array(this._flags.last_token, newline_restricted_tokens)) {
      // These tokens should never have a newline inserted
      // between them and the following expression.
      return;
    }
    this._output.set_wrap_point();
  }
};

Beautifier.prototype.print_newline = function(force_newline, preserve_statement_flags) {
  if (!preserve_statement_flags) {
    if (this._flags.last_token.text !== ';' && this._flags.last_token.text !== ',' && this._flags.last_token.text !== '=' && (this._flags.last_token.type !== TOKEN.OPERATOR || this._flags.last_token.text === '--' || this._flags.last_token.text === '++')) {
      var next_token = this._tokens.peek();
      while (this._flags.mode === MODE.Statement &&
        !(this._flags.if_block && reserved_word(next_token, 'else')) &&
        !this._flags.do_block) {
        this.restore_mode();
      }
    }
  }

  if (this._output.add_new_line(force_newline)) {
    this._flags.multiline_frame = true;
  }
};

Beautifier.prototype.print_token_line_indentation = function(current_token) {
  if (this._output.just_added_newline()) {
    if (this._options.keep_array_indentation &&
      current_token.newlines &&
      (current_token.text === '[' || is_array(this._flags.mode))) {
      this._output.current_line.set_indent(-1);
      this._output.current_line.push(current_token.whitespace_before);
      this._output.space_before_token = false;
    } else if (this._output.set_indent(this._flags.indentation_level, this._flags.alignment)) {
      this._flags.line_indent_level = this._flags.indentation_level;
    }
  }
};

Beautifier.prototype.print_token = function(current_token) {
  if (this._output.raw) {
    this._output.add_raw_token(current_token);
    return;
  }

  if (this._options.comma_first && current_token.previous && current_token.previous.type === TOKEN.COMMA &&
    this._output.just_added_newline()) {
    if (this._output.previous_line.last() === ',') {
      var popped = this._output.previous_line.pop();
      // if the comma was already at the start of the line,
      // pull back onto that line and reprint the indentation
      if (this._output.previous_line.is_empty()) {
        this._output.previous_line.push(popped);
        this._output.trim(true);
        this._output.current_line.pop();
        this._output.trim();
      }

      // add the comma in front of the next token
      this.print_token_line_indentation(current_token);
      this._output.add_token(',');
      this._output.space_before_token = true;
    }
  }

  this.print_token_line_indentation(current_token);
  this._output.non_breaking_space = true;
  this._output.add_token(current_token.text);
  if (this._output.previous_token_wrapped) {
    this._flags.multiline_frame = true;
  }
};

Beautifier.prototype.indent = function() {
  this._flags.indentation_level += 1;
  this._output.set_indent(this._flags.indentation_level, this._flags.alignment);
};

Beautifier.prototype.deindent = function() {
  if (this._flags.indentation_level > 0 &&
    ((!this._flags.parent) || this._flags.indentation_level > this._flags.parent.indentation_level)) {
    this._flags.indentation_level -= 1;
    this._output.set_indent(this._flags.indentation_level, this._flags.alignment);
  }
};

Beautifier.prototype.set_mode = function(mode) {
  if (this._flags) {
    this._flag_store.push(this._flags);
    this._previous_flags = this._flags;
  } else {
    this._previous_flags = this.create_flags(null, mode);
  }

  this._flags = this.create_flags(this._previous_flags, mode);
  this._output.set_indent(this._flags.indentation_level, this._flags.alignment);
};


Beautifier.prototype.restore_mode = function() {
  if (this._flag_store.length > 0) {
    this._previous_flags = this._flags;
    this._flags = this._flag_store.pop();
    if (this._previous_flags.mode === MODE.Statement) {
      remove_redundant_indentation(this._output, this._previous_flags);
    }
    this._output.set_indent(this._flags.indentation_level, this._flags.alignment);
  }
};

Beautifier.prototype.start_of_object_property = function() {
  return this._flags.parent.mode === MODE.ObjectLiteral && this._flags.mode === MODE.Statement && (
    (this._flags.last_token.text === ':' && this._flags.ternary_depth === 0) || (reserved_array(this._flags.last_token, ['get', 'set'])));
};

Beautifier.prototype.start_of_statement = function(current_token) {
  var start = false;
  start = start || reserved_array(this._flags.last_token, ['var', 'let', 'const']) && current_token.type === TOKEN.WORD;
  start = start || reserved_word(this._flags.last_token, 'do');
  start = start || (!(this._flags.parent.mode === MODE.ObjectLiteral && this._flags.mode === MODE.Statement)) && reserved_array(this._flags.last_token, newline_restricted_tokens) && !current_token.newlines;
  start = start || reserved_word(this._flags.last_token, 'else') &&
    !(reserved_word(current_token, 'if') && !current_token.comments_before);
  start = start || (this._flags.last_token.type === TOKEN.END_EXPR && (this._previous_flags.mode === MODE.ForInitializer || this._previous_flags.mode === MODE.Conditional));
  start = start || (this._flags.last_token.type === TOKEN.WORD && this._flags.mode === MODE.BlockStatement &&
    !this._flags.in_case &&
    !(current_token.text === '--' || current_token.text === '++') &&
    this._last_last_text !== 'function' &&
    current_token.type !== TOKEN.WORD && current_token.type !== TOKEN.RESERVED);
  start = start || (this._flags.mode === MODE.ObjectLiteral && (
    (this._flags.last_token.text === ':' && this._flags.ternary_depth === 0) || reserved_array(this._flags.last_token, ['get', 'set'])));

  if (start) {
    this.set_mode(MODE.Statement);
    this.indent();

    this.handle_whitespace_and_comments(current_token, true);

    // Issue #276:
    // If starting a new statement with [if, for, while, do], push to a new line.
    // if (a) if (b) if(c) d(); else e(); else f();
    if (!this.start_of_object_property()) {
      this.allow_wrap_or_preserved_newline(current_token,
        reserved_array(current_token, ['do', 'for', 'if', 'while']));
    }
    return true;
  }
  return false;
};

Beautifier.prototype.handle_start_expr = function(current_token) {
  // The conditional starts the statement if appropriate.
  if (!this.start_of_statement(current_token)) {
    this.handle_whitespace_and_comments(current_token);
  }

  var next_mode = MODE.Expression;
  if (current_token.text === '[') {

    if (this._flags.last_token.type === TOKEN.WORD || this._flags.last_token.text === ')') {
      // this is array index specifier, break immediately
      // a[x], fn()[x]
      if (reserved_array(this._flags.last_token, line_starters)) {
        this._output.space_before_token = true;
      }
      this.print_token(current_token);
      this.set_mode(next_mode);
      this.indent();
      if (this._options.space_in_paren) {
        this._output.space_before_token = true;
      }
      return;
    }

    next_mode = MODE.ArrayLiteral;
    if (is_array(this._flags.mode)) {
      if (this._flags.last_token.text === '[' ||
        (this._flags.last_token.text === ',' && (this._last_last_text === ']' || this._last_last_text === '}'))) {
        // ], [ goes to new line
        // }, [ goes to new line
        if (!this._options.keep_array_indentation) {
          this.print_newline();
        }
      }
    }

    if (!in_array(this._flags.last_token.type, [TOKEN.START_EXPR, TOKEN.END_EXPR, TOKEN.WORD, TOKEN.OPERATOR, TOKEN.DOT])) {
      this._output.space_before_token = true;
    }
  } else {
    if (this._flags.last_token.type === TOKEN.RESERVED) {
      if (this._flags.last_token.text === 'for') {
        this._output.space_before_token = this._options.space_before_conditional;
        next_mode = MODE.ForInitializer;
      } else if (in_array(this._flags.last_token.text, ['if', 'while', 'switch'])) {
        this._output.space_before_token = this._options.space_before_conditional;
        next_mode = MODE.Conditional;
      } else if (in_array(this._flags.last_word, ['await', 'async'])) {
        // Should be a space between await and an IIFE, or async and an arrow function
        this._output.space_before_token = true;
      } else if (this._flags.last_token.text === 'import' && current_token.whitespace_before === '') {
        this._output.space_before_token = false;
      } else if (in_array(this._flags.last_token.text, line_starters) || this._flags.last_token.text === 'catch') {
        this._output.space_before_token = true;
      }
    } else if (this._flags.last_token.type === TOKEN.EQUALS || this._flags.last_token.type === TOKEN.OPERATOR) {
      // Support of this kind of newline preservation.
      // a = (b &&
      //     (c || d));
      if (!this.start_of_object_property()) {
        this.allow_wrap_or_preserved_newline(current_token);
      }
    } else if (this._flags.last_token.type === TOKEN.WORD) {
      this._output.space_before_token = false;

      // function name() vs function name ()
      // function* name() vs function* name ()
      // async name() vs async name ()
      // In ES6, you can also define the method properties of an object
      // var obj = {a: function() {}}
      // It can be abbreviated
      // var obj = {a() {}}
      // var obj = { a() {}} vs var obj = { a () {}}
      // var obj = { * a() {}} vs var obj = { * a () {}}
      var peek_back_two = this._tokens.peek(-3);
      if (this._options.space_after_named_function && peek_back_two) {
        // peek starts at next character so -1 is current token
        var peek_back_three = this._tokens.peek(-4);
        if (reserved_array(peek_back_two, ['async', 'function']) ||
          (peek_back_two.text === '*' && reserved_array(peek_back_three, ['async', 'function']))) {
          this._output.space_before_token = true;
        } else if (this._flags.mode === MODE.ObjectLiteral) {
          if ((peek_back_two.text === '{' || peek_back_two.text === ',') ||
            (peek_back_two.text === '*' && (peek_back_three.text === '{' || peek_back_three.text === ','))) {
            this._output.space_before_token = true;
          }
        }
      }
    } else {
      // Support preserving wrapped arrow function expressions
      // a.b('c',
      //     () => d.e
      // )
      this.allow_wrap_or_preserved_newline(current_token);
    }

    // function() vs function ()
    // yield*() vs yield* ()
    // function*() vs function* ()
    if ((this._flags.last_token.type === TOKEN.RESERVED && (this._flags.last_word === 'function' || this._flags.last_word === 'typeof')) ||
      (this._flags.last_token.text === '*' &&
        (in_array(this._last_last_text, ['function', 'yield']) ||
          (this._flags.mode === MODE.ObjectLiteral && in_array(this._last_last_text, ['{', ',']))))) {
      this._output.space_before_token = this._options.space_after_anon_function;
    }
  }

  if (this._flags.last_token.text === ';' || this._flags.last_token.type === TOKEN.START_BLOCK) {
    this.print_newline();
  } else if (this._flags.last_token.type === TOKEN.END_EXPR || this._flags.last_token.type === TOKEN.START_EXPR || this._flags.last_token.type === TOKEN.END_BLOCK || this._flags.last_token.text === '.' || this._flags.last_token.type === TOKEN.COMMA) {
    // do nothing on (( and )( and ][ and ]( and .(
    // TODO: Consider whether forcing this is required.  Review failing tests when removed.
    this.allow_wrap_or_preserved_newline(current_token, current_token.newlines);
  }

  this.print_token(current_token);
  this.set_mode(next_mode);
  if (this._options.space_in_paren) {
    this._output.space_before_token = true;
  }

  // In all cases, if we newline while inside an expression it should be indented.
  this.indent();
};

Beautifier.prototype.handle_end_expr = function(current_token) {
  // statements inside expressions are not valid syntax, but...
  // statements must all be closed when their container closes
  while (this._flags.mode === MODE.Statement) {
    this.restore_mode();
  }

  this.handle_whitespace_and_comments(current_token);

  if (this._flags.multiline_frame) {
    this.allow_wrap_or_preserved_newline(current_token,
      current_token.text === ']' && is_array(this._flags.mode) && !this._options.keep_array_indentation);
  }

  if (this._options.space_in_paren) {
    if (this._flags.last_token.type === TOKEN.START_EXPR && !this._options.space_in_empty_paren) {
      // () [] no inner space in empty parens like these, ever, ref #320
      this._output.trim();
      this._output.space_before_token = false;
    } else {
      this._output.space_before_token = true;
    }
  }
  this.deindent();
  this.print_token(current_token);
  this.restore_mode();

  remove_redundant_indentation(this._output, this._previous_flags);

  // do {} while () // no statement required after
  if (this._flags.do_while && this._previous_flags.mode === MODE.Conditional) {
    this._previous_flags.mode = MODE.Expression;
    this._flags.do_block = false;
    this._flags.do_while = false;

  }
};

Beautifier.prototype.handle_start_block = function(current_token) {
  this.handle_whitespace_and_comments(current_token);

  // Check if this is should be treated as a ObjectLiteral
  var next_token = this._tokens.peek();
  var second_token = this._tokens.peek(1);
  if (this._flags.last_word === 'switch' && this._flags.last_token.type === TOKEN.END_EXPR) {
    this.set_mode(MODE.BlockStatement);
    this._flags.in_case_statement = true;
  } else if (this._flags.case_body) {
    this.set_mode(MODE.BlockStatement);
  } else if (second_token && (
      (in_array(second_token.text, [':', ',']) && in_array(next_token.type, [TOKEN.STRING, TOKEN.WORD, TOKEN.RESERVED])) ||
      (in_array(next_token.text, ['get', 'set', '...']) && in_array(second_token.type, [TOKEN.WORD, TOKEN.RESERVED]))
    )) {
    // We don't support TypeScript,but we didn't break it for a very long time.
    // We'll try to keep not breaking it.
    if (!in_array(this._last_last_text, ['class', 'interface'])) {
      this.set_mode(MODE.ObjectLiteral);
    } else {
      this.set_mode(MODE.BlockStatement);
    }
  } else if (this._flags.last_token.type === TOKEN.OPERATOR && this._flags.last_token.text === '=>') {
    // arrow function: (param1, paramN) => { statements }
    this.set_mode(MODE.BlockStatement);
  } else if (in_array(this._flags.last_token.type, [TOKEN.EQUALS, TOKEN.START_EXPR, TOKEN.COMMA, TOKEN.OPERATOR]) ||
    reserved_array(this._flags.last_token, ['return', 'throw', 'import', 'default'])
  ) {
    // Detecting shorthand function syntax is difficult by scanning forward,
    //     so check the surrounding context.
    // If the block is being returned, imported, export default, passed as arg,
    //     assigned with = or assigned in a nested object, treat as an ObjectLiteral.
    this.set_mode(MODE.ObjectLiteral);
  } else {
    this.set_mode(MODE.BlockStatement);
  }

  var empty_braces = !next_token.comments_before && next_token.text === '}';
  var empty_anonymous_function = empty_braces && this._flags.last_word === 'function' &&
    this._flags.last_token.type === TOKEN.END_EXPR;

  if (this._options.brace_preserve_inline) // check for inline, set inline_frame if so
  {
    // search forward for a newline wanted inside this block
    var index = 0;
    var check_token = null;
    this._flags.inline_frame = true;
    do {
      index += 1;
      check_token = this._tokens.peek(index - 1);
      if (check_token.newlines) {
        this._flags.inline_frame = false;
        break;
      }
    } while (check_token.type !== TOKEN.EOF &&
      !(check_token.type === TOKEN.END_BLOCK && check_token.opened === current_token));
  }

  if ((this._options.brace_style === "expand" ||
      (this._options.brace_style === "none" && current_token.newlines)) &&
    !this._flags.inline_frame) {
    if (this._flags.last_token.type !== TOKEN.OPERATOR &&
      (empty_anonymous_function ||
        this._flags.last_token.type === TOKEN.EQUALS ||
        (reserved_array(this._flags.last_token, special_words) && this._flags.last_token.text !== 'else'))) {
      this._output.space_before_token = true;
    } else {
      this.print_newline(false, true);
    }
  } else { // collapse || inline_frame
    if (is_array(this._previous_flags.mode) && (this._flags.last_token.type === TOKEN.START_EXPR || this._flags.last_token.type === TOKEN.COMMA)) {
      if (this._flags.last_token.type === TOKEN.COMMA || this._options.space_in_paren) {
        this._output.space_before_token = true;
      }

      if (this._flags.last_token.type === TOKEN.COMMA || (this._flags.last_token.type === TOKEN.START_EXPR && this._flags.inline_frame)) {
        this.allow_wrap_or_preserved_newline(current_token);
        this._previous_flags.multiline_frame = this._previous_flags.multiline_frame || this._flags.multiline_frame;
        this._flags.multiline_frame = false;
      }
    }
    if (this._flags.last_token.type !== TOKEN.OPERATOR && this._flags.last_token.type !== TOKEN.START_EXPR) {
      if (this._flags.last_token.type === TOKEN.START_BLOCK && !this._flags.inline_frame) {
        this.print_newline();
      } else {
        this._output.space_before_token = true;
      }
    }
  }
  this.print_token(current_token);
  this.indent();

  // Except for specific cases, open braces are followed by a new line.
  if (!empty_braces && !(this._options.brace_preserve_inline && this._flags.inline_frame)) {
    this.print_newline();
  }
};

Beautifier.prototype.handle_end_block = function(current_token) {
  // statements must all be closed when their container closes
  this.handle_whitespace_and_comments(current_token);

  while (this._flags.mode === MODE.Statement) {
    this.restore_mode();
  }

  var empty_braces = this._flags.last_token.type === TOKEN.START_BLOCK;

  if (this._flags.inline_frame && !empty_braces) { // try inline_frame (only set if this._options.braces-preserve-inline) first
    this._output.space_before_token = true;
  } else if (this._options.brace_style === "expand") {
    if (!empty_braces) {
      this.print_newline();
    }
  } else {
    // skip {}
    if (!empty_braces) {
      if (is_array(this._flags.mode) && this._options.keep_array_indentation) {
        // we REALLY need a newline here, but newliner would skip that
        this._options.keep_array_indentation = false;
        this.print_newline();
        this._options.keep_array_indentation = true;

      } else {
        this.print_newline();
      }
    }
  }
  this.restore_mode();
  this.print_token(current_token);
};

Beautifier.prototype.handle_word = function(current_token) {
  if (current_token.type === TOKEN.RESERVED) {
    if (in_array(current_token.text, ['set', 'get']) && this._flags.mode !== MODE.ObjectLiteral) {
      current_token.type = TOKEN.WORD;
    } else if (current_token.text === 'import' && this._tokens.peek().text === '(') {
      current_token.type = TOKEN.WORD;
    } else if (in_array(current_token.text, ['as', 'from']) && !this._flags.import_block) {
      current_token.type = TOKEN.WORD;
    } else if (this._flags.mode === MODE.ObjectLiteral) {
      var next_token = this._tokens.peek();
      if (next_token.text === ':') {
        current_token.type = TOKEN.WORD;
      }
    }
  }

  if (this.start_of_statement(current_token)) {
    // The conditional starts the statement if appropriate.
    if (reserved_array(this._flags.last_token, ['var', 'let', 'const']) && current_token.type === TOKEN.WORD) {
      this._flags.declaration_statement = true;
    }
  } else if (current_token.newlines && !is_expression(this._flags.mode) &&
    (this._flags.last_token.type !== TOKEN.OPERATOR || (this._flags.last_token.text === '--' || this._flags.last_token.text === '++')) &&
    this._flags.last_token.type !== TOKEN.EQUALS &&
    (this._options.preserve_newlines || !reserved_array(this._flags.last_token, ['var', 'let', 'const', 'set', 'get']))) {
    this.handle_whitespace_and_comments(current_token);
    this.print_newline();
  } else {
    this.handle_whitespace_and_comments(current_token);
  }

  if (this._flags.do_block && !this._flags.do_while) {
    if (reserved_word(current_token, 'while')) {
      // do {} ## while ()
      this._output.space_before_token = true;
      this.print_token(current_token);
      this._output.space_before_token = true;
      this._flags.do_while = true;
      return;
    } else {
      // do {} should always have while as the next word.
      // if we don't see the expected while, recover
      this.print_newline();
      this._flags.do_block = false;
    }
  }

  // if may be followed by else, or not
  // Bare/inline ifs are tricky
  // Need to unwind the modes correctly: if (a) if (b) c(); else d(); else e();
  if (this._flags.if_block) {
    if (!this._flags.else_block && reserved_word(current_token, 'else')) {
      this._flags.else_block = true;
    } else {
      while (this._flags.mode === MODE.Statement) {
        this.restore_mode();
      }
      this._flags.if_block = false;
      this._flags.else_block = false;
    }
  }

  if (this._flags.in_case_statement && reserved_array(current_token, ['case', 'default'])) {
    this.print_newline();
    if (this._flags.last_token.type !== TOKEN.END_BLOCK && (this._flags.case_body || this._options.jslint_happy)) {
      // switch cases following one another
      this.deindent();
    }
    this._flags.case_body = false;

    this.print_token(current_token);
    this._flags.in_case = true;
    return;
  }

  if (this._flags.last_token.type === TOKEN.COMMA || this._flags.last_token.type === TOKEN.START_EXPR || this._flags.last_token.type === TOKEN.EQUALS || this._flags.last_token.type === TOKEN.OPERATOR) {
    if (!this.start_of_object_property()) {
      this.allow_wrap_or_preserved_newline(current_token);
    }
  }

  if (reserved_word(current_token, 'function')) {
    if (in_array(this._flags.last_token.text, ['}', ';']) ||
      (this._output.just_added_newline() && !(in_array(this._flags.last_token.text, ['(', '[', '{', ':', '=', ',']) || this._flags.last_token.type === TOKEN.OPERATOR))) {
      // make sure there is a nice clean space of at least one blank line
      // before a new function definition
      if (!this._output.just_added_blankline() && !current_token.comments_before) {
        this.print_newline();
        this.print_newline(true);
      }
    }
    if (this._flags.last_token.type === TOKEN.RESERVED || this._flags.last_token.type === TOKEN.WORD) {
      if (reserved_array(this._flags.last_token, ['get', 'set', 'new', 'export']) ||
        reserved_array(this._flags.last_token, newline_restricted_tokens)) {
        this._output.space_before_token = true;
      } else if (reserved_word(this._flags.last_token, 'default') && this._last_last_text === 'export') {
        this._output.space_before_token = true;
      } else if (this._flags.last_token.text === 'declare') {
        // accomodates Typescript declare function formatting
        this._output.space_before_token = true;
      } else {
        this.print_newline();
      }
    } else if (this._flags.last_token.type === TOKEN.OPERATOR || this._flags.last_token.text === '=') {
      // foo = function
      this._output.space_before_token = true;
    } else if (!this._flags.multiline_frame && (is_expression(this._flags.mode) || is_array(this._flags.mode))) {
      // (function
    } else {
      this.print_newline();
    }

    this.print_token(current_token);
    this._flags.last_word = current_token.text;
    return;
  }

  var prefix = 'NONE';

  if (this._flags.last_token.type === TOKEN.END_BLOCK) {

    if (this._previous_flags.inline_frame) {
      prefix = 'SPACE';
    } else if (!reserved_array(current_token, ['else', 'catch', 'finally', 'from'])) {
      prefix = 'NEWLINE';
    } else {
      if (this._options.brace_style === "expand" ||
        this._options.brace_style === "end-expand" ||
        (this._options.brace_style === "none" && current_token.newlines)) {
        prefix = 'NEWLINE';
      } else {
        prefix = 'SPACE';
        this._output.space_before_token = true;
      }
    }
  } else if (this._flags.last_token.type === TOKEN.SEMICOLON && this._flags.mode === MODE.BlockStatement) {
    // TODO: Should this be for STATEMENT as well?
    prefix = 'NEWLINE';
  } else if (this._flags.last_token.type === TOKEN.SEMICOLON && is_expression(this._flags.mode)) {
    prefix = 'SPACE';
  } else if (this._flags.last_token.type === TOKEN.STRING) {
    prefix = 'NEWLINE';
  } else if (this._flags.last_token.type === TOKEN.RESERVED || this._flags.last_token.type === TOKEN.WORD ||
    (this._flags.last_token.text === '*' &&
      (in_array(this._last_last_text, ['function', 'yield']) ||
        (this._flags.mode === MODE.ObjectLiteral && in_array(this._last_last_text, ['{', ',']))))) {
    prefix = 'SPACE';
  } else if (this._flags.last_token.type === TOKEN.START_BLOCK) {
    if (this._flags.inline_frame) {
      prefix = 'SPACE';
    } else {
      prefix = 'NEWLINE';
    }
  } else if (this._flags.last_token.type === TOKEN.END_EXPR) {
    this._output.space_before_token = true;
    prefix = 'NEWLINE';
  }

  if (reserved_array(current_token, line_starters) && this._flags.last_token.text !== ')') {
    if (this._flags.inline_frame || this._flags.last_token.text === 'else' || this._flags.last_token.text === 'export') {
      prefix = 'SPACE';
    } else {
      prefix = 'NEWLINE';
    }

  }

  if (reserved_array(current_token, ['else', 'catch', 'finally'])) {
    if ((!(this._flags.last_token.type === TOKEN.END_BLOCK && this._previous_flags.mode === MODE.BlockStatement) ||
        this._options.brace_style === "expand" ||
        this._options.brace_style === "end-expand" ||
        (this._options.brace_style === "none" && current_token.newlines)) &&
      !this._flags.inline_frame) {
      this.print_newline();
    } else {
      this._output.trim(true);
      var line = this._output.current_line;
      // If we trimmed and there's something other than a close block before us
      // put a newline back in.  Handles '} // comment' scenario.
      if (line.last() !== '}') {
        this.print_newline();
      }
      this._output.space_before_token = true;
    }
  } else if (prefix === 'NEWLINE') {
    if (reserved_array(this._flags.last_token, special_words)) {
      // no newline between 'return nnn'
      this._output.space_before_token = true;
    } else if (this._flags.last_token.text === 'declare' && reserved_array(current_token, ['var', 'let', 'const'])) {
      // accomodates Typescript declare formatting
      this._output.space_before_token = true;
    } else if (this._flags.last_token.type !== TOKEN.END_EXPR) {
      if ((this._flags.last_token.type !== TOKEN.START_EXPR || !reserved_array(current_token, ['var', 'let', 'const'])) && this._flags.last_token.text !== ':') {
        // no need to force newline on 'var': for (var x = 0...)
        if (reserved_word(current_token, 'if') && reserved_word(current_token.previous, 'else')) {
          // no newline for } else if {
          this._output.space_before_token = true;
        } else {
          this.print_newline();
        }
      }
    } else if (reserved_array(current_token, line_starters) && this._flags.last_token.text !== ')') {
      this.print_newline();
    }
  } else if (this._flags.multiline_frame && is_array(this._flags.mode) && this._flags.last_token.text === ',' && this._last_last_text === '}') {
    this.print_newline(); // }, in lists get a newline treatment
  } else if (prefix === 'SPACE') {
    this._output.space_before_token = true;
  }
  if (current_token.previous && (current_token.previous.type === TOKEN.WORD || current_token.previous.type === TOKEN.RESERVED)) {
    this._output.space_before_token = true;
  }
  this.print_token(current_token);
  this._flags.last_word = current_token.text;

  if (current_token.type === TOKEN.RESERVED) {
    if (current_token.text === 'do') {
      this._flags.do_block = true;
    } else if (current_token.text === 'if') {
      this._flags.if_block = true;
    } else if (current_token.text === 'import') {
      this._flags.import_block = true;
    } else if (this._flags.import_block && reserved_word(current_token, 'from')) {
      this._flags.import_block = false;
    }
  }
};

Beautifier.prototype.handle_semicolon = function(current_token) {
  if (this.start_of_statement(current_token)) {
    // The conditional starts the statement if appropriate.
    // Semicolon can be the start (and end) of a statement
    this._output.space_before_token = false;
  } else {
    this.handle_whitespace_and_comments(current_token);
  }

  var next_token = this._tokens.peek();
  while (this._flags.mode === MODE.Statement &&
    !(this._flags.if_block && reserved_word(next_token, 'else')) &&
    !this._flags.do_block) {
    this.restore_mode();
  }

  // hacky but effective for the moment
  if (this._flags.import_block) {
    this._flags.import_block = false;
  }
  this.print_token(current_token);
};

Beautifier.prototype.handle_string = function(current_token) {
  if (current_token.text.startsWith("`") && current_token.newlines === 0 && current_token.whitespace_before === '' && (current_token.previous.text === ')' || this._flags.last_token.type === TOKEN.WORD)) {
    //Conditional for detectign backtick strings
  } else if (this.start_of_statement(current_token)) {
    // The conditional starts the statement if appropriate.
    // One difference - strings want at least a space before
    this._output.space_before_token = true;
  } else {
    this.handle_whitespace_and_comments(current_token);
    if (this._flags.last_token.type === TOKEN.RESERVED || this._flags.last_token.type === TOKEN.WORD || this._flags.inline_frame) {
      this._output.space_before_token = true;
    } else if (this._flags.last_token.type === TOKEN.COMMA || this._flags.last_token.type === TOKEN.START_EXPR || this._flags.last_token.type === TOKEN.EQUALS || this._flags.last_token.type === TOKEN.OPERATOR) {
      if (!this.start_of_object_property()) {
        this.allow_wrap_or_preserved_newline(current_token);
      }
    } else if ((current_token.text.startsWith("`") && this._flags.last_token.type === TOKEN.END_EXPR && (current_token.previous.text === ']' || current_token.previous.text === ')') && current_token.newlines === 0)) {
      this._output.space_before_token = true;
    } else {
      this.print_newline();
    }
  }
  this.print_token(current_token);
};

Beautifier.prototype.handle_equals = function(current_token) {
  if (this.start_of_statement(current_token)) {
    // The conditional starts the statement if appropriate.
  } else {
    this.handle_whitespace_and_comments(current_token);
  }

  if (this._flags.declaration_statement) {
    // just got an '=' in a var-line, different formatting/line-breaking, etc will now be done
    this._flags.declaration_assignment = true;
  }
  this._output.space_before_token = true;
  this.print_token(current_token);
  this._output.space_before_token = true;
};

Beautifier.prototype.handle_comma = function(current_token) {
  this.handle_whitespace_and_comments(current_token, true);

  this.print_token(current_token);
  this._output.space_before_token = true;
  if (this._flags.declaration_statement) {
    if (is_expression(this._flags.parent.mode)) {
      // do not break on comma, for(var a = 1, b = 2)
      this._flags.declaration_assignment = false;
    }

    if (this._flags.declaration_assignment) {
      this._flags.declaration_assignment = false;
      this.print_newline(false, true);
    } else if (this._options.comma_first) {
      // for comma-first, we want to allow a newline before the comma
      // to turn into a newline after the comma, which we will fixup later
      this.allow_wrap_or_preserved_newline(current_token);
    }
  } else if (this._flags.mode === MODE.ObjectLiteral ||
    (this._flags.mode === MODE.Statement && this._flags.parent.mode === MODE.ObjectLiteral)) {
    if (this._flags.mode === MODE.Statement) {
      this.restore_mode();
    }

    if (!this._flags.inline_frame) {
      this.print_newline();
    }
  } else if (this._options.comma_first) {
    // EXPR or DO_BLOCK
    // for comma-first, we want to allow a newline before the comma
    // to turn into a newline after the comma, which we will fixup later
    this.allow_wrap_or_preserved_newline(current_token);
  }
};

Beautifier.prototype.handle_operator = function(current_token) {
  var isGeneratorAsterisk = current_token.text === '*' &&
    (reserved_array(this._flags.last_token, ['function', 'yield']) ||
      (in_array(this._flags.last_token.type, [TOKEN.START_BLOCK, TOKEN.COMMA, TOKEN.END_BLOCK, TOKEN.SEMICOLON]))
    );
  var isUnary = in_array(current_token.text, ['-', '+']) && (
    in_array(this._flags.last_token.type, [TOKEN.START_BLOCK, TOKEN.START_EXPR, TOKEN.EQUALS, TOKEN.OPERATOR]) ||
    in_array(this._flags.last_token.text, line_starters) ||
    this._flags.last_token.text === ','
  );

  if (this.start_of_statement(current_token)) {
    // The conditional starts the statement if appropriate.
  } else {
    var preserve_statement_flags = !isGeneratorAsterisk;
    this.handle_whitespace_and_comments(current_token, preserve_statement_flags);
  }

  if (reserved_array(this._flags.last_token, special_words)) {
    // "return" had a special handling in TK_WORD. Now we need to return the favor
    this._output.space_before_token = true;
    this.print_token(current_token);
    return;
  }

  // hack for actionscript's import .*;
  if (current_token.text === '*' && this._flags.last_token.type === TOKEN.DOT) {
    this.print_token(current_token);
    return;
  }

  if (current_token.text === '::') {
    // no spaces around exotic namespacing syntax operator
    this.print_token(current_token);
    return;
  }

  // Allow line wrapping between operators when operator_position is
  //   set to before or preserve
  if (this._flags.last_token.type === TOKEN.OPERATOR && in_array(this._options.operator_position, OPERATOR_POSITION_BEFORE_OR_PRESERVE)) {
    this.allow_wrap_or_preserved_newline(current_token);
  }

  if (current_token.text === ':' && this._flags.in_case) {
    this.print_token(current_token);

    this._flags.in_case = false;
    this._flags.case_body = true;
    if (this._tokens.peek().type !== TOKEN.START_BLOCK) {
      this.indent();
      this.print_newline();
    } else {
      this._output.space_before_token = true;
    }
    return;
  }

  var space_before = true;
  var space_after = true;
  var in_ternary = false;
  if (current_token.text === ':') {
    if (this._flags.ternary_depth === 0) {
      // Colon is invalid javascript outside of ternary and object, but do our best to guess what was meant.
      space_before = false;
    } else {
      this._flags.ternary_depth -= 1;
      in_ternary = true;
    }
  } else if (current_token.text === '?') {
    this._flags.ternary_depth += 1;
  }

  // let's handle the operator_position option prior to any conflicting logic
  if (!isUnary && !isGeneratorAsterisk && this._options.preserve_newlines && in_array(current_token.text, positionable_operators)) {
    var isColon = current_token.text === ':';
    var isTernaryColon = (isColon && in_ternary);
    var isOtherColon = (isColon && !in_ternary);

    switch (this._options.operator_position) {
      case OPERATOR_POSITION.before_newline:
        // if the current token is : and it's not a ternary statement then we set space_before to false
        this._output.space_before_token = !isOtherColon;

        this.print_token(current_token);

        if (!isColon || isTernaryColon) {
          this.allow_wrap_or_preserved_newline(current_token);
        }

        this._output.space_before_token = true;
        return;

      case OPERATOR_POSITION.after_newline:
        // if the current token is anything but colon, or (via deduction) it's a colon and in a ternary statement,
        //   then print a newline.

        this._output.space_before_token = true;

        if (!isColon || isTernaryColon) {
          if (this._tokens.peek().newlines) {
            this.print_newline(false, true);
          } else {
            this.allow_wrap_or_preserved_newline(current_token);
          }
        } else {
          this._output.space_before_token = false;
        }

        this.print_token(current_token);

        this._output.space_before_token = true;
        return;

      case OPERATOR_POSITION.preserve_newline:
        if (!isOtherColon) {
          this.allow_wrap_or_preserved_newline(current_token);
        }

        // if we just added a newline, or the current token is : and it's not a ternary statement,
        //   then we set space_before to false
        space_before = !(this._output.just_added_newline() || isOtherColon);

        this._output.space_before_token = space_before;
        this.print_token(current_token);
        this._output.space_before_token = true;
        return;
    }
  }

  if (isGeneratorAsterisk) {
    this.allow_wrap_or_preserved_newline(current_token);
    space_before = false;
    var next_token = this._tokens.peek();
    space_after = next_token && in_array(next_token.type, [TOKEN.WORD, TOKEN.RESERVED]);
  } else if (current_token.text === '...') {
    this.allow_wrap_or_preserved_newline(current_token);
    space_before = this._flags.last_token.type === TOKEN.START_BLOCK;
    space_after = false;
  } else if (in_array(current_token.text, ['--', '++', '!', '~']) || isUnary) {
    // unary operators (and binary +/- pretending to be unary) special cases
    if (this._flags.last_token.type === TOKEN.COMMA || this._flags.last_token.type === TOKEN.START_EXPR) {
      this.allow_wrap_or_preserved_newline(current_token);
    }

    space_before = false;
    space_after = false;

    // http://www.ecma-international.org/ecma-262/5.1/#sec-7.9.1
    // if there is a newline between -- or ++ and anything else we should preserve it.
    if (current_token.newlines && (current_token.text === '--' || current_token.text === '++')) {
      this.print_newline(false, true);
    }

    if (this._flags.last_token.text === ';' && is_expression(this._flags.mode)) {
      // for (;; ++i)
      //        ^^^
      space_before = true;
    }

    if (this._flags.last_token.type === TOKEN.RESERVED) {
      space_before = true;
    } else if (this._flags.last_token.type === TOKEN.END_EXPR) {
      space_before = !(this._flags.last_token.text === ']' && (current_token.text === '--' || current_token.text === '++'));
    } else if (this._flags.last_token.type === TOKEN.OPERATOR) {
      // a++ + ++b;
      // a - -b
      space_before = in_array(current_token.text, ['--', '-', '++', '+']) && in_array(this._flags.last_token.text, ['--', '-', '++', '+']);
      // + and - are not unary when preceeded by -- or ++ operator
      // a-- + b
      // a * +b
      // a - -b
      if (in_array(current_token.text, ['+', '-']) && in_array(this._flags.last_token.text, ['--', '++'])) {
        space_after = true;
      }
    }


    if (((this._flags.mode === MODE.BlockStatement && !this._flags.inline_frame) || this._flags.mode === MODE.Statement) &&
      (this._flags.last_token.text === '{' || this._flags.last_token.text === ';')) {
      // { foo; --i }
      // foo(); --bar;
      this.print_newline();
    }
  }

  this._output.space_before_token = this._output.space_before_token || space_before;
  this.print_token(current_token);
  this._output.space_before_token = space_after;
};

Beautifier.prototype.handle_block_comment = function(current_token, preserve_statement_flags) {
  if (this._output.raw) {
    this._output.add_raw_token(current_token);
    if (current_token.directives && current_token.directives.preserve === 'end') {
      // If we're testing the raw output behavior, do not allow a directive to turn it off.
      this._output.raw = this._options.test_output_raw;
    }
    return;
  }

  if (current_token.directives) {
    this.print_newline(false, preserve_statement_flags);
    this.print_token(current_token);
    if (current_token.directives.preserve === 'start') {
      this._output.raw = true;
    }
    this.print_newline(false, true);
    return;
  }

  // inline block
  if (!acorn.newline.test(current_token.text) && !current_token.newlines) {
    this._output.space_before_token = true;
    this.print_token(current_token);
    this._output.space_before_token = true;
    return;
  } else {
    this.print_block_commment(current_token, preserve_statement_flags);
  }
};

Beautifier.prototype.print_block_commment = function(current_token, preserve_statement_flags) {
  var lines = split_linebreaks(current_token.text);
  var j; // iterator for this case
  var javadoc = false;
  var starless = false;
  var lastIndent = current_token.whitespace_before;
  var lastIndentLength = lastIndent.length;

  // block comment starts with a new line
  this.print_newline(false, preserve_statement_flags);

  // first line always indented
  this.print_token_line_indentation(current_token);
  this._output.add_token(lines[0]);
  this.print_newline(false, preserve_statement_flags);


  if (lines.length > 1) {
    lines = lines.slice(1);
    javadoc = all_lines_start_with(lines, '*');
    starless = each_line_matches_indent(lines, lastIndent);

    if (javadoc) {
      this._flags.alignment = 1;
    }

    for (j = 0; j < lines.length; j++) {
      if (javadoc) {
        // javadoc: reformat and re-indent
        this.print_token_line_indentation(current_token);
        this._output.add_token(ltrim(lines[j]));
      } else if (starless && lines[j]) {
        // starless: re-indent non-empty content, avoiding trim
        this.print_token_line_indentation(current_token);
        this._output.add_token(lines[j].substring(lastIndentLength));
      } else {
        // normal comments output raw
        this._output.current_line.set_indent(-1);
        this._output.add_token(lines[j]);
      }

      // for comments on their own line or  more than one line, make sure there's a new line after
      this.print_newline(false, preserve_statement_flags);
    }

    this._flags.alignment = 0;
  }
};


Beautifier.prototype.handle_comment = function(current_token, preserve_statement_flags) {
  if (current_token.newlines) {
    this.print_newline(false, preserve_statement_flags);
  } else {
    this._output.trim(true);
  }

  this._output.space_before_token = true;
  this.print_token(current_token);
  this.print_newline(false, preserve_statement_flags);
};

Beautifier.prototype.handle_dot = function(current_token) {
  if (this.start_of_statement(current_token)) {
    // The conditional starts the statement if appropriate.
  } else {
    this.handle_whitespace_and_comments(current_token, true);
  }

  if (reserved_array(this._flags.last_token, special_words)) {
    this._output.space_before_token = false;
  } else {
    // allow preserved newlines before dots in general
    // force newlines on dots after close paren when break_chained - for bar().baz()
    this.allow_wrap_or_preserved_newline(current_token,
      this._flags.last_token.text === ')' && this._options.break_chained_methods);
  }

  // Only unindent chained method dot if this dot starts a new line.
  // Otherwise the automatic extra indentation removal will handle the over indent
  if (this._options.unindent_chained_methods && this._output.just_added_newline()) {
    this.deindent();
  }

  this.print_token(current_token);
};

Beautifier.prototype.handle_unknown = function(current_token, preserve_statement_flags) {
  this.print_token(current_token);

  if (current_token.text[current_token.text.length - 1] === '\n') {
    this.print_newline(false, preserve_statement_flags);
  }
};

Beautifier.prototype.handle_eof = function(current_token) {
  // Unwind any open statements
  while (this._flags.mode === MODE.Statement) {
    this.restore_mode();
  }
  this.handle_whitespace_and_comments(current_token);
};

module.exports.Beautifier = Beautifier;

},{"../core/output":90,"../core/token":93,"./acorn":105,"./options":108,"./tokenizer":109}],107:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

var Beautifier = require('./beautifier').Beautifier,
  Options = require('./options').Options;

function js_beautify(js_source_text, options) {
  var beautifier = new Beautifier(js_source_text, options);
  return beautifier.beautify();
}

module.exports = js_beautify;
module.exports.defaultOptions = function() {
  return new Options();
};

},{"./beautifier":106,"./options":108}],108:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

var BaseOptions = require('../core/options').Options;

var validPositionValues = ['before-newline', 'after-newline', 'preserve-newline'];

function Options(options) {
  BaseOptions.call(this, options, 'js');

  // compatibility, re
  var raw_brace_style = this.raw_options.brace_style || null;
  if (raw_brace_style === "expand-strict") { //graceful handling of deprecated option
    this.raw_options.brace_style = "expand";
  } else if (raw_brace_style === "collapse-preserve-inline") { //graceful handling of deprecated option
    this.raw_options.brace_style = "collapse,preserve-inline";
  } else if (this.raw_options.braces_on_own_line !== undefined) { //graceful handling of deprecated option
    this.raw_options.brace_style = this.raw_options.braces_on_own_line ? "expand" : "collapse";
    // } else if (!raw_brace_style) { //Nothing exists to set it
    //   raw_brace_style = "collapse";
  }

  //preserve-inline in delimited string will trigger brace_preserve_inline, everything
  //else is considered a brace_style and the last one only will have an effect

  var brace_style_split = this._get_selection_list('brace_style', ['collapse', 'expand', 'end-expand', 'none', 'preserve-inline']);

  this.brace_preserve_inline = false; //Defaults in case one or other was not specified in meta-option
  this.brace_style = "collapse";

  for (var bs = 0; bs < brace_style_split.length; bs++) {
    if (brace_style_split[bs] === "preserve-inline") {
      this.brace_preserve_inline = true;
    } else {
      this.brace_style = brace_style_split[bs];
    }
  }

  this.unindent_chained_methods = this._get_boolean('unindent_chained_methods');
  this.break_chained_methods = this._get_boolean('break_chained_methods');
  this.space_in_paren = this._get_boolean('space_in_paren');
  this.space_in_empty_paren = this._get_boolean('space_in_empty_paren');
  this.jslint_happy = this._get_boolean('jslint_happy');
  this.space_after_anon_function = this._get_boolean('space_after_anon_function');
  this.space_after_named_function = this._get_boolean('space_after_named_function');
  this.keep_array_indentation = this._get_boolean('keep_array_indentation');
  this.space_before_conditional = this._get_boolean('space_before_conditional', true);
  this.unescape_strings = this._get_boolean('unescape_strings');
  this.e4x = this._get_boolean('e4x');
  this.comma_first = this._get_boolean('comma_first');
  this.operator_position = this._get_selection('operator_position', validPositionValues);

  // For testing of beautify preserve:start directive
  this.test_output_raw = this._get_boolean('test_output_raw');

  // force this._options.space_after_anon_function to true if this._options.jslint_happy
  if (this.jslint_happy) {
    this.space_after_anon_function = true;
  }

}
Options.prototype = new BaseOptions();



module.exports.Options = Options;

},{"../core/options":89}],109:[function(require,module,exports){
/*jshint node:true */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

'use strict';

var InputScanner = require('../core/inputscanner').InputScanner;
var BaseTokenizer = require('../core/tokenizer').Tokenizer;
var BASETOKEN = require('../core/tokenizer').TOKEN;
var Directives = require('../core/directives').Directives;
var acorn = require('./acorn');
var Pattern = require('../core/pattern').Pattern;
var TemplatablePattern = require('../core/templatablepattern').TemplatablePattern;


function in_array(what, arr) {
  return arr.indexOf(what) !== -1;
}


var TOKEN = {
  START_EXPR: 'TK_START_EXPR',
  END_EXPR: 'TK_END_EXPR',
  START_BLOCK: 'TK_START_BLOCK',
  END_BLOCK: 'TK_END_BLOCK',
  WORD: 'TK_WORD',
  RESERVED: 'TK_RESERVED',
  SEMICOLON: 'TK_SEMICOLON',
  STRING: 'TK_STRING',
  EQUALS: 'TK_EQUALS',
  OPERATOR: 'TK_OPERATOR',
  COMMA: 'TK_COMMA',
  BLOCK_COMMENT: 'TK_BLOCK_COMMENT',
  COMMENT: 'TK_COMMENT',
  DOT: 'TK_DOT',
  UNKNOWN: 'TK_UNKNOWN',
  START: BASETOKEN.START,
  RAW: BASETOKEN.RAW,
  EOF: BASETOKEN.EOF
};


var directives_core = new Directives(/\/\*/, /\*\//);

var number_pattern = /0[xX][0123456789abcdefABCDEF_]*n?|0[oO][01234567_]*n?|0[bB][01_]*n?|\d[\d_]*n|(?:\.\d[\d_]*|\d[\d_]*\.?[\d_]*)(?:[eE][+-]?[\d_]+)?/;

var digit = /[0-9]/;

// Dot "." must be distinguished from "..." and decimal
var dot_pattern = /[^\d\.]/;

var positionable_operators = (
  ">>> === !== " +
  "<< && >= ** != == <= >> || ?? |> " +
  "< / - + > : & % ? ^ | *").split(' ');

// IMPORTANT: this must be sorted longest to shortest or tokenizing many not work.
// Also, you must update possitionable operators separately from punct
var punct =
  ">>>= " +
  "... >>= <<= === >>> !== **= " +
  "=> ^= :: /= << <= == && -= >= >> != -- += ** || ?? ++ %= &= *= |= |> " +
  "= ! ? > < : / ^ - + * & % ~ |";

punct = punct.replace(/[-[\]{}()*+?.,\\^$|#]/g, "\\$&");
// ?. but not if followed by a number 
punct = '\\?\\.(?!\\d) ' + punct;
punct = punct.replace(/ /g, '|');

var punct_pattern = new RegExp(punct);

// words which should always start on new line.
var line_starters = 'continue,try,throw,return,var,let,const,if,switch,case,default,for,while,break,function,import,export'.split(',');
var reserved_words = line_starters.concat(['do', 'in', 'of', 'else', 'get', 'set', 'new', 'catch', 'finally', 'typeof', 'yield', 'async', 'await', 'from', 'as']);
var reserved_word_pattern = new RegExp('^(?:' + reserved_words.join('|') + ')$');

// var template_pattern = /(?:(?:<\?php|<\?=)[\s\S]*?\?>)|(?:<%[\s\S]*?%>)/g;

var in_html_comment;

var Tokenizer = function(input_string, options) {
  BaseTokenizer.call(this, input_string, options);

  this._patterns.whitespace = this._patterns.whitespace.matching(
    /\u00A0\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff/.source,
    /\u2028\u2029/.source);

  var pattern_reader = new Pattern(this._input);
  var templatable = new TemplatablePattern(this._input)
    .read_options(this._options);

  this.__patterns = {
    template: templatable,
    identifier: templatable.starting_with(acorn.identifier).matching(acorn.identifierMatch),
    number: pattern_reader.matching(number_pattern),
    punct: pattern_reader.matching(punct_pattern),
    // comment ends just before nearest linefeed or end of file
    comment: pattern_reader.starting_with(/\/\//).until(/[\n\r\u2028\u2029]/),
    //  /* ... */ comment ends with nearest */ or end of file
    block_comment: pattern_reader.starting_with(/\/\*/).until_after(/\*\//),
    html_comment_start: pattern_reader.matching(/<!--/),
    html_comment_end: pattern_reader.matching(/-->/),
    include: pattern_reader.starting_with(/#include/).until_after(acorn.lineBreak),
    shebang: pattern_reader.starting_with(/#!/).until_after(acorn.lineBreak),
    xml: pattern_reader.matching(/[\s\S]*?<(\/?)([-a-zA-Z:0-9_.]+|{[\s\S]+?}|!\[CDATA\[[\s\S]*?\]\]|)(\s+{[\s\S]+?}|\s+[-a-zA-Z:0-9_.]+|\s+[-a-zA-Z:0-9_.]+\s*=\s*('[^']*'|"[^"]*"|{[\s\S]+?}))*\s*(\/?)\s*>/),
    single_quote: templatable.until(/['\\\n\r\u2028\u2029]/),
    double_quote: templatable.until(/["\\\n\r\u2028\u2029]/),
    template_text: templatable.until(/[`\\$]/),
    template_expression: templatable.until(/[`}\\]/)
  };

};
Tokenizer.prototype = new BaseTokenizer();

Tokenizer.prototype._is_comment = function(current_token) {
  return current_token.type === TOKEN.COMMENT || current_token.type === TOKEN.BLOCK_COMMENT || current_token.type === TOKEN.UNKNOWN;
};

Tokenizer.prototype._is_opening = function(current_token) {
  return current_token.type === TOKEN.START_BLOCK || current_token.type === TOKEN.START_EXPR;
};

Tokenizer.prototype._is_closing = function(current_token, open_token) {
  return (current_token.type === TOKEN.END_BLOCK || current_token.type === TOKEN.END_EXPR) &&
    (open_token && (
      (current_token.text === ']' && open_token.text === '[') ||
      (current_token.text === ')' && open_token.text === '(') ||
      (current_token.text === '}' && open_token.text === '{')));
};

Tokenizer.prototype._reset = function() {
  in_html_comment = false;
};

Tokenizer.prototype._get_next_token = function(previous_token, open_token) { // jshint unused:false
  var token = null;
  this._readWhitespace();
  var c = this._input.peek();

  if (c === null) {
    return this._create_token(TOKEN.EOF, '');
  }

  token = token || this._read_non_javascript(c);
  token = token || this._read_string(c);
  token = token || this._read_word(previous_token);
  token = token || this._read_singles(c);
  token = token || this._read_comment(c);
  token = token || this._read_regexp(c, previous_token);
  token = token || this._read_xml(c, previous_token);
  token = token || this._read_punctuation();
  token = token || this._create_token(TOKEN.UNKNOWN, this._input.next());

  return token;
};

Tokenizer.prototype._read_word = function(previous_token) {
  var resulting_string;
  resulting_string = this.__patterns.identifier.read();
  if (resulting_string !== '') {
    resulting_string = resulting_string.replace(acorn.allLineBreaks, '\n');
    if (!(previous_token.type === TOKEN.DOT ||
        (previous_token.type === TOKEN.RESERVED && (previous_token.text === 'set' || previous_token.text === 'get'))) &&
      reserved_word_pattern.test(resulting_string)) {
      if (resulting_string === 'in' || resulting_string === 'of') { // hack for 'in' and 'of' operators
        return this._create_token(TOKEN.OPERATOR, resulting_string);
      }
      return this._create_token(TOKEN.RESERVED, resulting_string);
    }
    return this._create_token(TOKEN.WORD, resulting_string);
  }

  resulting_string = this.__patterns.number.read();
  if (resulting_string !== '') {
    return this._create_token(TOKEN.WORD, resulting_string);
  }
};

Tokenizer.prototype._read_singles = function(c) {
  var token = null;
  if (c === '(' || c === '[') {
    token = this._create_token(TOKEN.START_EXPR, c);
  } else if (c === ')' || c === ']') {
    token = this._create_token(TOKEN.END_EXPR, c);
  } else if (c === '{') {
    token = this._create_token(TOKEN.START_BLOCK, c);
  } else if (c === '}') {
    token = this._create_token(TOKEN.END_BLOCK, c);
  } else if (c === ';') {
    token = this._create_token(TOKEN.SEMICOLON, c);
  } else if (c === '.' && dot_pattern.test(this._input.peek(1))) {
    token = this._create_token(TOKEN.DOT, c);
  } else if (c === ',') {
    token = this._create_token(TOKEN.COMMA, c);
  }

  if (token) {
    this._input.next();
  }
  return token;
};

Tokenizer.prototype._read_punctuation = function() {
  var resulting_string = this.__patterns.punct.read();

  if (resulting_string !== '') {
    if (resulting_string === '=') {
      return this._create_token(TOKEN.EQUALS, resulting_string);
    } else if (resulting_string === '?.') {
      return this._create_token(TOKEN.DOT, resulting_string);
    } else {
      return this._create_token(TOKEN.OPERATOR, resulting_string);
    }
  }
};

Tokenizer.prototype._read_non_javascript = function(c) {
  var resulting_string = '';

  if (c === '#') {
    if (this._is_first_token()) {
      resulting_string = this.__patterns.shebang.read();

      if (resulting_string) {
        return this._create_token(TOKEN.UNKNOWN, resulting_string.trim() + '\n');
      }
    }

    // handles extendscript #includes
    resulting_string = this.__patterns.include.read();

    if (resulting_string) {
      return this._create_token(TOKEN.UNKNOWN, resulting_string.trim() + '\n');
    }

    c = this._input.next();

    // Spidermonkey-specific sharp variables for circular references. Considered obsolete.
    var sharp = '#';
    if (this._input.hasNext() && this._input.testChar(digit)) {
      do {
        c = this._input.next();
        sharp += c;
      } while (this._input.hasNext() && c !== '#' && c !== '=');
      if (c === '#') {
        //
      } else if (this._input.peek() === '[' && this._input.peek(1) === ']') {
        sharp += '[]';
        this._input.next();
        this._input.next();
      } else if (this._input.peek() === '{' && this._input.peek(1) === '}') {
        sharp += '{}';
        this._input.next();
        this._input.next();
      }
      return this._create_token(TOKEN.WORD, sharp);
    }

    this._input.back();

  } else if (c === '<' && this._is_first_token()) {
    resulting_string = this.__patterns.html_comment_start.read();
    if (resulting_string) {
      while (this._input.hasNext() && !this._input.testChar(acorn.newline)) {
        resulting_string += this._input.next();
      }
      in_html_comment = true;
      return this._create_token(TOKEN.COMMENT, resulting_string);
    }
  } else if (in_html_comment && c === '-') {
    resulting_string = this.__patterns.html_comment_end.read();
    if (resulting_string) {
      in_html_comment = false;
      return this._create_token(TOKEN.COMMENT, resulting_string);
    }
  }

  return null;
};

Tokenizer.prototype._read_comment = function(c) {
  var token = null;
  if (c === '/') {
    var comment = '';
    if (this._input.peek(1) === '*') {
      // peek for comment /* ... */
      comment = this.__patterns.block_comment.read();
      var directives = directives_core.get_directives(comment);
      if (directives && directives.ignore === 'start') {
        comment += directives_core.readIgnored(this._input);
      }
      comment = comment.replace(acorn.allLineBreaks, '\n');
      token = this._create_token(TOKEN.BLOCK_COMMENT, comment);
      token.directives = directives;
    } else if (this._input.peek(1) === '/') {
      // peek for comment // ...
      comment = this.__patterns.comment.read();
      token = this._create_token(TOKEN.COMMENT, comment);
    }
  }
  return token;
};

Tokenizer.prototype._read_string = function(c) {
  if (c === '`' || c === "'" || c === '"') {
    var resulting_string = this._input.next();
    this.has_char_escapes = false;

    if (c === '`') {
      resulting_string += this._read_string_recursive('`', true, '${');
    } else {
      resulting_string += this._read_string_recursive(c);
    }

    if (this.has_char_escapes && this._options.unescape_strings) {
      resulting_string = unescape_string(resulting_string);
    }

    if (this._input.peek() === c) {
      resulting_string += this._input.next();
    }

    resulting_string = resulting_string.replace(acorn.allLineBreaks, '\n');

    return this._create_token(TOKEN.STRING, resulting_string);
  }

  return null;
};

Tokenizer.prototype._allow_regexp_or_xml = function(previous_token) {
  // regex and xml can only appear in specific locations during parsing
  return (previous_token.type === TOKEN.RESERVED && in_array(previous_token.text, ['return', 'case', 'throw', 'else', 'do', 'typeof', 'yield'])) ||
    (previous_token.type === TOKEN.END_EXPR && previous_token.text === ')' &&
      previous_token.opened.previous.type === TOKEN.RESERVED && in_array(previous_token.opened.previous.text, ['if', 'while', 'for'])) ||
    (in_array(previous_token.type, [TOKEN.COMMENT, TOKEN.START_EXPR, TOKEN.START_BLOCK, TOKEN.START,
      TOKEN.END_BLOCK, TOKEN.OPERATOR, TOKEN.EQUALS, TOKEN.EOF, TOKEN.SEMICOLON, TOKEN.COMMA
    ]));
};

Tokenizer.prototype._read_regexp = function(c, previous_token) {

  if (c === '/' && this._allow_regexp_or_xml(previous_token)) {
    // handle regexp
    //
    var resulting_string = this._input.next();
    var esc = false;

    var in_char_class = false;
    while (this._input.hasNext() &&
      ((esc || in_char_class || this._input.peek() !== c) &&
        !this._input.testChar(acorn.newline))) {
      resulting_string += this._input.peek();
      if (!esc) {
        esc = this._input.peek() === '\\';
        if (this._input.peek() === '[') {
          in_char_class = true;
        } else if (this._input.peek() === ']') {
          in_char_class = false;
        }
      } else {
        esc = false;
      }
      this._input.next();
    }

    if (this._input.peek() === c) {
      resulting_string += this._input.next();

      // regexps may have modifiers /regexp/MOD , so fetch those, too
      // Only [gim] are valid, but if the user puts in garbage, do what we can to take it.
      resulting_string += this._input.read(acorn.identifier);
    }
    return this._create_token(TOKEN.STRING, resulting_string);
  }
  return null;
};

Tokenizer.prototype._read_xml = function(c, previous_token) {

  if (this._options.e4x && c === "<" && this._allow_regexp_or_xml(previous_token)) {
    var xmlStr = '';
    var match = this.__patterns.xml.read_match();
    // handle e4x xml literals
    //
    if (match) {
      // Trim root tag to attempt to
      var rootTag = match[2].replace(/^{\s+/, '{').replace(/\s+}$/, '}');
      var isCurlyRoot = rootTag.indexOf('{') === 0;
      var depth = 0;
      while (match) {
        var isEndTag = !!match[1];
        var tagName = match[2];
        var isSingletonTag = (!!match[match.length - 1]) || (tagName.slice(0, 8) === "![CDATA[");
        if (!isSingletonTag &&
          (tagName === rootTag || (isCurlyRoot && tagName.replace(/^{\s+/, '{').replace(/\s+}$/, '}')))) {
          if (isEndTag) {
            --depth;
          } else {
            ++depth;
          }
        }
        xmlStr += match[0];
        if (depth <= 0) {
          break;
        }
        match = this.__patterns.xml.read_match();
      }
      // if we didn't close correctly, keep unformatted.
      if (!match) {
        xmlStr += this._input.match(/[\s\S]*/g)[0];
      }
      xmlStr = xmlStr.replace(acorn.allLineBreaks, '\n');
      return this._create_token(TOKEN.STRING, xmlStr);
    }
  }

  return null;
};

function unescape_string(s) {
  // You think that a regex would work for this
  // return s.replace(/\\x([0-9a-f]{2})/gi, function(match, val) {
  //         return String.fromCharCode(parseInt(val, 16));
  //     })
  // However, dealing with '\xff', '\\xff', '\\\xff' makes this more fun.
  var out = '',
    escaped = 0;

  var input_scan = new InputScanner(s);
  var matched = null;

  while (input_scan.hasNext()) {
    // Keep any whitespace, non-slash characters
    // also keep slash pairs.
    matched = input_scan.match(/([\s]|[^\\]|\\\\)+/g);

    if (matched) {
      out += matched[0];
    }

    if (input_scan.peek() === '\\') {
      input_scan.next();
      if (input_scan.peek() === 'x') {
        matched = input_scan.match(/x([0-9A-Fa-f]{2})/g);
      } else if (input_scan.peek() === 'u') {
        matched = input_scan.match(/u([0-9A-Fa-f]{4})/g);
      } else {
        out += '\\';
        if (input_scan.hasNext()) {
          out += input_scan.next();
        }
        continue;
      }

      // If there's some error decoding, return the original string
      if (!matched) {
        return s;
      }

      escaped = parseInt(matched[1], 16);

      if (escaped > 0x7e && escaped <= 0xff && matched[0].indexOf('x') === 0) {
        // we bail out on \x7f..\xff,
        // leaving whole string escaped,
        // as it's probably completely binary
        return s;
      } else if (escaped >= 0x00 && escaped < 0x20) {
        // leave 0x00...0x1f escaped
        out += '\\' + matched[0];
        continue;
      } else if (escaped === 0x22 || escaped === 0x27 || escaped === 0x5c) {
        // single-quote, apostrophe, backslash - escape these
        out += '\\' + String.fromCharCode(escaped);
      } else {
        out += String.fromCharCode(escaped);
      }
    }
  }

  return out;
}

// handle string
//
Tokenizer.prototype._read_string_recursive = function(delimiter, allow_unescaped_newlines, start_sub) {
  var current_char;
  var pattern;
  if (delimiter === '\'') {
    pattern = this.__patterns.single_quote;
  } else if (delimiter === '"') {
    pattern = this.__patterns.double_quote;
  } else if (delimiter === '`') {
    pattern = this.__patterns.template_text;
  } else if (delimiter === '}') {
    pattern = this.__patterns.template_expression;
  }

  var resulting_string = pattern.read();
  var next = '';
  while (this._input.hasNext()) {
    next = this._input.next();
    if (next === delimiter ||
      (!allow_unescaped_newlines && acorn.newline.test(next))) {
      this._input.back();
      break;
    } else if (next === '\\' && this._input.hasNext()) {
      current_char = this._input.peek();

      if (current_char === 'x' || current_char === 'u') {
        this.has_char_escapes = true;
      } else if (current_char === '\r' && this._input.peek(1) === '\n') {
        this._input.next();
      }
      next += this._input.next();
    } else if (start_sub) {
      if (start_sub === '${' && next === '$' && this._input.peek() === '{') {
        next += this._input.next();
      }

      if (start_sub === next) {
        if (delimiter === '`') {
          next += this._read_string_recursive('}', allow_unescaped_newlines, '`');
        } else {
          next += this._read_string_recursive('`', allow_unescaped_newlines, '${');
        }
        if (this._input.hasNext()) {
          next += this._input.next();
        }
      }
    }
    next += pattern.read();
    resulting_string += next;
  }

  return resulting_string;
};

module.exports.Tokenizer = Tokenizer;
module.exports.TOKEN = TOKEN;
module.exports.positionable_operators = positionable_operators.slice();
module.exports.line_starters = line_starters.slice();

},{"../core/directives":87,"../core/inputscanner":88,"../core/pattern":91,"../core/templatablepattern":92,"../core/tokenizer":94,"./acorn":105}],110:[function(require,module,exports){
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/***/ "./node_modules/assert/assert.js":
/*!***************************************!*\
  !*** ./node_modules/assert/assert.js ***!
  \***************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

"use strict";
/* WEBPACK VAR INJECTION */(function(global) {

// compare and isBuffer taken from https://github.com/feross/buffer/blob/680e9e5e488f22aac27599a57dc844a6315928dd/index.js
// original notice:

/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
 * @license  MIT
 */
function compare(a, b) {
  if (a === b) {
    return 0;
  }

  var x = a.length;
  var y = b.length;

  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
    if (a[i] !== b[i]) {
      x = a[i];
      y = b[i];
      break;
    }
  }

  if (x < y) {
    return -1;
  }
  if (y < x) {
    return 1;
  }
  return 0;
}
function isBuffer(b) {
  if (global.Buffer && typeof global.Buffer.isBuffer === 'function') {
    return global.Buffer.isBuffer(b);
  }
  return !!(b != null && b._isBuffer);
}

// based on node assert, original notice:

// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
//
// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
//
// Originally from narwhal.js (http://narwhaljs.org)
// Copyright (c) 2009 Thomas Robinson <280north.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the 'Software'), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

var util = __webpack_require__(/*! util/ */ "./node_modules/webpack-stream/node_modules/util/util.js");
var hasOwn = Object.prototype.hasOwnProperty;
var pSlice = Array.prototype.slice;
var functionsHaveNames = (function () {
  return function foo() {}.name === 'foo';
}());
function pToString (obj) {
  return Object.prototype.toString.call(obj);
}
function isView(arrbuf) {
  if (isBuffer(arrbuf)) {
    return false;
  }
  if (typeof global.ArrayBuffer !== 'function') {
    return false;
  }
  if (typeof ArrayBuffer.isView === 'function') {
    return ArrayBuffer.isView(arrbuf);
  }
  if (!arrbuf) {
    return false;
  }
  if (arrbuf instanceof DataView) {
    return true;
  }
  if (arrbuf.buffer && arrbuf.buffer instanceof ArrayBuffer) {
    return true;
  }
  return false;
}
// 1. The assert module provides functions that throw
// AssertionError's when particular conditions are not met. The
// assert module must conform to the following interface.

var assert = module.exports = ok;

// 2. The AssertionError is defined in assert.
// new assert.AssertionError({ message: message,
//                             actual: actual,
//                             expected: expected })

var regex = /\s*function\s+([^\(\s]*)\s*/;
// based on https://github.com/ljharb/function.prototype.name/blob/adeeeec8bfcc6068b187d7d9fb3d5bb1d3a30899/implementation.js
function getName(func) {
  if (!util.isFunction(func)) {
    return;
  }
  if (functionsHaveNames) {
    return func.name;
  }
  var str = func.toString();
  var match = str.match(regex);
  return match && match[1];
}
assert.AssertionError = function AssertionError(options) {
  this.name = 'AssertionError';
  this.actual = options.actual;
  this.expected = options.expected;
  this.operator = options.operator;
  if (options.message) {
    this.message = options.message;
    this.generatedMessage = false;
  } else {
    this.message = getMessage(this);
    this.generatedMessage = true;
  }
  var stackStartFunction = options.stackStartFunction || fail;
  if (Error.captureStackTrace) {
    Error.captureStackTrace(this, stackStartFunction);
  } else {
    // non v8 browsers so we can have a stacktrace
    var err = new Error();
    if (err.stack) {
      var out = err.stack;

      // try to strip useless frames
      var fn_name = getName(stackStartFunction);
      var idx = out.indexOf('\n' + fn_name);
      if (idx >= 0) {
        // once we have located the function frame
        // we need to strip out everything before it (and its line)
        var next_line = out.indexOf('\n', idx + 1);
        out = out.substring(next_line + 1);
      }

      this.stack = out;
    }
  }
};

// assert.AssertionError instanceof Error
util.inherits(assert.AssertionError, Error);

function truncate(s, n) {
  if (typeof s === 'string') {
    return s.length < n ? s : s.slice(0, n);
  } else {
    return s;
  }
}
function inspect(something) {
  if (functionsHaveNames || !util.isFunction(something)) {
    return util.inspect(something);
  }
  var rawname = getName(something);
  var name = rawname ? ': ' + rawname : '';
  return '[Function' +  name + ']';
}
function getMessage(self) {
  return truncate(inspect(self.actual), 128) + ' ' +
         self.operator + ' ' +
         truncate(inspect(self.expected), 128);
}

// At present only the three keys mentioned above are used and
// understood by the spec. Implementations or sub modules can pass
// other keys to the AssertionError's constructor - they will be
// ignored.

// 3. All of the following functions must throw an AssertionError
// when a corresponding condition is not met, with a message that
// may be undefined if not provided.  All assertion methods provide
// both the actual and expected values to the assertion error for
// display purposes.

function fail(actual, expected, message, operator, stackStartFunction) {
  throw new assert.AssertionError({
    message: message,
    actual: actual,
    expected: expected,
    operator: operator,
    stackStartFunction: stackStartFunction
  });
}

// EXTENSION! allows for well behaved errors defined elsewhere.
assert.fail = fail;

// 4. Pure assertion tests whether a value is truthy, as determined
// by !!guard.
// assert.ok(guard, message_opt);
// This statement is equivalent to assert.equal(true, !!guard,
// message_opt);. To test strictly for the value true, use
// assert.strictEqual(true, guard, message_opt);.

function ok(value, message) {
  if (!value) fail(value, true, message, '==', assert.ok);
}
assert.ok = ok;

// 5. The equality assertion tests shallow, coercive equality with
// ==.
// assert.equal(actual, expected, message_opt);

assert.equal = function equal(actual, expected, message) {
  if (actual != expected) fail(actual, expected, message, '==', assert.equal);
};

// 6. The non-equality assertion tests for whether two objects are not equal
// with != assert.notEqual(actual, expected, message_opt);

assert.notEqual = function notEqual(actual, expected, message) {
  if (actual == expected) {
    fail(actual, expected, message, '!=', assert.notEqual);
  }
};

// 7. The equivalence assertion tests a deep equality relation.
// assert.deepEqual(actual, expected, message_opt);

assert.deepEqual = function deepEqual(actual, expected, message) {
  if (!_deepEqual(actual, expected, false)) {
    fail(actual, expected, message, 'deepEqual', assert.deepEqual);
  }
};

assert.deepStrictEqual = function deepStrictEqual(actual, expected, message) {
  if (!_deepEqual(actual, expected, true)) {
    fail(actual, expected, message, 'deepStrictEqual', assert.deepStrictEqual);
  }
};

function _deepEqual(actual, expected, strict, memos) {
  // 7.1. All identical values are equivalent, as determined by ===.
  if (actual === expected) {
    return true;
  } else if (isBuffer(actual) && isBuffer(expected)) {
    return compare(actual, expected) === 0;

  // 7.2. If the expected value is a Date object, the actual value is
  // equivalent if it is also a Date object that refers to the same time.
  } else if (util.isDate(actual) && util.isDate(expected)) {
    return actual.getTime() === expected.getTime();

  // 7.3 If the expected value is a RegExp object, the actual value is
  // equivalent if it is also a RegExp object with the same source and
  // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
  } else if (util.isRegExp(actual) && util.isRegExp(expected)) {
    return actual.source === expected.source &&
           actual.global === expected.global &&
           actual.multiline === expected.multiline &&
           actual.lastIndex === expected.lastIndex &&
           actual.ignoreCase === expected.ignoreCase;

  // 7.4. Other pairs that do not both pass typeof value == 'object',
  // equivalence is determined by ==.
  } else if ((actual === null || typeof actual !== 'object') &&
             (expected === null || typeof expected !== 'object')) {
    return strict ? actual === expected : actual == expected;

  // If both values are instances of typed arrays, wrap their underlying
  // ArrayBuffers in a Buffer each to increase performance
  // This optimization requires the arrays to have the same type as checked by
  // Object.prototype.toString (aka pToString). Never perform binary
  // comparisons for Float*Arrays, though, since e.g. +0 === -0 but their
  // bit patterns are not identical.
  } else if (isView(actual) && isView(expected) &&
             pToString(actual) === pToString(expected) &&
             !(actual instanceof Float32Array ||
               actual instanceof Float64Array)) {
    return compare(new Uint8Array(actual.buffer),
                   new Uint8Array(expected.buffer)) === 0;

  // 7.5 For all other Object pairs, including Array objects, equivalence is
  // determined by having the same number of owned properties (as verified
  // with Object.prototype.hasOwnProperty.call), the same set of keys
  // (although not necessarily the same order), equivalent values for every
  // corresponding key, and an identical 'prototype' property. Note: this
  // accounts for both named and indexed properties on Arrays.
  } else if (isBuffer(actual) !== isBuffer(expected)) {
    return false;
  } else {
    memos = memos || {actual: [], expected: []};

    var actualIndex = memos.actual.indexOf(actual);
    if (actualIndex !== -1) {
      if (actualIndex === memos.expected.indexOf(expected)) {
        return true;
      }
    }

    memos.actual.push(actual);
    memos.expected.push(expected);

    return objEquiv(actual, expected, strict, memos);
  }
}

function isArguments(object) {
  return Object.prototype.toString.call(object) == '[object Arguments]';
}

function objEquiv(a, b, strict, actualVisitedObjects) {
  if (a === null || a === undefined || b === null || b === undefined)
    return false;
  // if one is a primitive, the other must be same
  if (util.isPrimitive(a) || util.isPrimitive(b))
    return a === b;
  if (strict && Object.getPrototypeOf(a) !== Object.getPrototypeOf(b))
    return false;
  var aIsArgs = isArguments(a);
  var bIsArgs = isArguments(b);
  if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
    return false;
  if (aIsArgs) {
    a = pSlice.call(a);
    b = pSlice.call(b);
    return _deepEqual(a, b, strict);
  }
  var ka = objectKeys(a);
  var kb = objectKeys(b);
  var key, i;
  // having the same number of owned properties (keys incorporates
  // hasOwnProperty)
  if (ka.length !== kb.length)
    return false;
  //the same set of keys (although not necessarily the same order),
  ka.sort();
  kb.sort();
  //~~~cheap key test
  for (i = ka.length - 1; i >= 0; i--) {
    if (ka[i] !== kb[i])
      return false;
  }
  //equivalent values for every corresponding key, and
  //~~~possibly expensive deep test
  for (i = ka.length - 1; i >= 0; i--) {
    key = ka[i];
    if (!_deepEqual(a[key], b[key], strict, actualVisitedObjects))
      return false;
  }
  return true;
}

// 8. The non-equivalence assertion tests for any deep inequality.
// assert.notDeepEqual(actual, expected, message_opt);

assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
  if (_deepEqual(actual, expected, false)) {
    fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
  }
};

assert.notDeepStrictEqual = notDeepStrictEqual;
function notDeepStrictEqual(actual, expected, message) {
  if (_deepEqual(actual, expected, true)) {
    fail(actual, expected, message, 'notDeepStrictEqual', notDeepStrictEqual);
  }
}


// 9. The strict equality assertion tests strict equality, as determined by ===.
// assert.strictEqual(actual, expected, message_opt);

assert.strictEqual = function strictEqual(actual, expected, message) {
  if (actual !== expected) {
    fail(actual, expected, message, '===', assert.strictEqual);
  }
};

// 10. The strict non-equality assertion tests for strict inequality, as
// determined by !==.  assert.notStrictEqual(actual, expected, message_opt);

assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
  if (actual === expected) {
    fail(actual, expected, message, '!==', assert.notStrictEqual);
  }
};

function expectedException(actual, expected) {
  if (!actual || !expected) {
    return false;
  }

  if (Object.prototype.toString.call(expected) == '[object RegExp]') {
    return expected.test(actual);
  }

  try {
    if (actual instanceof expected) {
      return true;
    }
  } catch (e) {
    // Ignore.  The instanceof check doesn't work for arrow functions.
  }

  if (Error.isPrototypeOf(expected)) {
    return false;
  }

  return expected.call({}, actual) === true;
}

function _tryBlock(block) {
  var error;
  try {
    block();
  } catch (e) {
    error = e;
  }
  return error;
}

function _throws(shouldThrow, block, expected, message) {
  var actual;

  if (typeof block !== 'function') {
    throw new TypeError('"block" argument must be a function');
  }

  if (typeof expected === 'string') {
    message = expected;
    expected = null;
  }

  actual = _tryBlock(block);

  message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
            (message ? ' ' + message : '.');

  if (shouldThrow && !actual) {
    fail(actual, expected, 'Missing expected exception' + message);
  }

  var userProvidedMessage = typeof message === 'string';
  var isUnwantedException = !shouldThrow && util.isError(actual);
  var isUnexpectedException = !shouldThrow && actual && !expected;

  if ((isUnwantedException &&
      userProvidedMessage &&
      expectedException(actual, expected)) ||
      isUnexpectedException) {
    fail(actual, expected, 'Got unwanted exception' + message);
  }

  if ((shouldThrow && actual && expected &&
      !expectedException(actual, expected)) || (!shouldThrow && actual)) {
    throw actual;
  }
}

// 11. Expected to throw an error:
// assert.throws(block, Error_opt, message_opt);

assert.throws = function(block, /*optional*/error, /*optional*/message) {
  _throws(true, block, error, message);
};

// EXTENSION! This is annoying to write outside this module.
assert.doesNotThrow = function(block, /*optional*/error, /*optional*/message) {
  _throws(false, block, error, message);
};

assert.ifError = function(err) { if (err) throw err; };

var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) {
    if (hasOwn.call(obj, key)) keys.push(key);
  }
  return keys;
};

/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../webpack-stream/node_modules/webpack/buildin/global.js */ "./node_modules/webpack-stream/node_modules/webpack/buildin/global.js")))

/***/ }),

/***/ "./node_modules/dct/index.js":
/*!***********************************!*\
  !*** ./node_modules/dct/index.js ***!
  \***********************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

module.exports = __webpack_require__(/*! ./src/dct.js */ "./node_modules/dct/src/dct.js");


/***/ }),

/***/ "./node_modules/dct/src/dct.js":
/*!*************************************!*\
  !*** ./node_modules/dct/src/dct.js ***!
  \*************************************/
/*! no static exports found */
/***/ (function(module, exports) {

/*===========================================================================*\
 * Discrete Cosine Transform
 *
 * (c) Vail Systems. Joshua Jung and Ben Bryan. 2015
 *
 * This code is not designed to be highly optimized but as an educational
 * tool to understand the Mel-scale and its related coefficients used in
 * human speech analysis.
\*===========================================================================*/
var cosMap = null;

// Builds a cosine map for the given input size. This allows multiple input sizes to be memoized automagically
// if you want to run the DCT over and over.
var memoizeCosines = function(N) {
  cosMap = cosMap || {};
  cosMap[N] = new Array(N*N);

  var PI_N = Math.PI / N;

  for (var k = 0; k < N; k++) {
    for (var n = 0; n < N; n++) {
      cosMap[N][n + (k * N)] = Math.cos(PI_N * (n + 0.5) * k);
    }
  }
};

function dct(signal, scale) {
  var L = signal.length;
  scale = scale || 2;

  if (!cosMap || !cosMap[L]) memoizeCosines(L);

  var coefficients = signal.map(function () {return 0;});

  return coefficients.map(function (__, ix) {
    return scale * signal.reduce(function (prev, cur, ix_, arr) {
      return prev + (cur * cosMap[L][ix_ + (ix * L)]);
    }, 0);
  });
};

module.exports = dct;


/***/ }),

/***/ "./node_modules/fftjs/dist/fft.js":
/*!****************************************!*\
  !*** ./node_modules/fftjs/dist/fft.js ***!
  \****************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var utils = __webpack_require__(/*! ./utils */ "./node_modules/fftjs/dist/utils.js");

// real to complex fft
var fft = function fft(signal) {

  var complexSignal = {};

  if (signal.real === undefined || signal.imag === undefined) {
    complexSignal = utils.constructComplexArray(signal);
  } else {
    complexSignal.real = signal.real.slice();
    complexSignal.imag = signal.imag.slice();
  }

  var N = complexSignal.real.length;
  var logN = Math.log2(N);

  if (Math.round(logN) != logN) throw new Error('Input size must be a power of 2.');

  if (complexSignal.real.length != complexSignal.imag.length) {
    throw new Error('Real and imaginary components must have the same length.');
  }

  var bitReversedIndices = utils.bitReverseArray(N);

  // sort array
  var ordered = {
    'real': [],
    'imag': []
  };

  for (var i = 0; i < N; i++) {
    ordered.real[bitReversedIndices[i]] = complexSignal.real[i];
    ordered.imag[bitReversedIndices[i]] = complexSignal.imag[i];
  }

  for (var _i = 0; _i < N; _i++) {
    complexSignal.real[_i] = ordered.real[_i];
    complexSignal.imag[_i] = ordered.imag[_i];
  }
  // iterate over the number of stages
  for (var n = 1; n <= logN; n++) {
    var currN = Math.pow(2, n);

    // find twiddle factors
    for (var k = 0; k < currN / 2; k++) {
      var twiddle = utils.euler(k, currN);

      // on each block of FT, implement the butterfly diagram
      for (var m = 0; m < N / currN; m++) {
        var currEvenIndex = currN * m + k;
        var currOddIndex = currN * m + k + currN / 2;

        var currEvenIndexSample = {
          'real': complexSignal.real[currEvenIndex],
          'imag': complexSignal.imag[currEvenIndex]
        };
        var currOddIndexSample = {
          'real': complexSignal.real[currOddIndex],
          'imag': complexSignal.imag[currOddIndex]
        };

        var odd = utils.multiply(twiddle, currOddIndexSample);

        var subtractionResult = utils.subtract(currEvenIndexSample, odd);
        complexSignal.real[currOddIndex] = subtractionResult.real;
        complexSignal.imag[currOddIndex] = subtractionResult.imag;

        var additionResult = utils.add(odd, currEvenIndexSample);
        complexSignal.real[currEvenIndex] = additionResult.real;
        complexSignal.imag[currEvenIndex] = additionResult.imag;
      }
    }
  }

  return complexSignal;
};

// complex to real ifft
var ifft = function ifft(signal) {

  if (signal.real === undefined || signal.imag === undefined) {
    throw new Error("IFFT only accepts a complex input.");
  }

  var N = signal.real.length;

  var complexSignal = {
    'real': [],
    'imag': []
  };

  //take complex conjugate in order to be able to use the regular FFT for IFFT
  for (var i = 0; i < N; i++) {
    var currentSample = {
      'real': signal.real[i],
      'imag': signal.imag[i]
    };

    var conjugateSample = utils.conj(currentSample);
    complexSignal.real[i] = conjugateSample.real;
    complexSignal.imag[i] = conjugateSample.imag;
  }

  //compute
  var X = fft(complexSignal);

  //normalize
  complexSignal.real = X.real.map(function (val) {
    return val / N;
  });

  complexSignal.imag = X.imag.map(function (val) {
    return val / N;
  });

  return complexSignal;
};

module.exports = {
  fft: fft,
  ifft: ifft
};

/***/ }),

/***/ "./node_modules/fftjs/dist/utils.js":
/*!******************************************!*\
  !*** ./node_modules/fftjs/dist/utils.js ***!
  \******************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


// memoization of the reversal of different lengths.

function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }

var memoizedReversal = {};
var memoizedZeroBuffers = {};

var constructComplexArray = function constructComplexArray(signal) {
  var complexSignal = {};

  complexSignal.real = signal.real === undefined ? signal.slice() : signal.real.slice();

  var bufferSize = complexSignal.real.length;

  if (memoizedZeroBuffers[bufferSize] === undefined) {
    memoizedZeroBuffers[bufferSize] = Array.apply(null, Array(bufferSize)).map(Number.prototype.valueOf, 0);
  }

  complexSignal.imag = memoizedZeroBuffers[bufferSize].slice();

  return complexSignal;
};

var bitReverseArray = function bitReverseArray(N) {
  if (memoizedReversal[N] === undefined) {
    var maxBinaryLength = (N - 1).toString(2).length; //get the binary length of the largest index.
    var templateBinary = '0'.repeat(maxBinaryLength); //create a template binary of that length.
    var reversed = {};
    for (var n = 0; n < N; n++) {
      var currBinary = n.toString(2); //get binary value of current index.

      //prepend zeros from template to current binary. This makes binary values of all indices have the same length.
      currBinary = templateBinary.substr(currBinary.length) + currBinary;

      currBinary = [].concat(_toConsumableArray(currBinary)).reverse().join(''); //reverse
      reversed[n] = parseInt(currBinary, 2); //convert to decimal
    }
    memoizedReversal[N] = reversed; //save
  }
  return memoizedReversal[N];
};

// complex multiplication
var multiply = function multiply(a, b) {
  return {
    'real': a.real * b.real - a.imag * b.imag,
    'imag': a.real * b.imag + a.imag * b.real
  };
};

// complex addition
var add = function add(a, b) {
  return {
    'real': a.real + b.real,
    'imag': a.imag + b.imag
  };
};

// complex subtraction
var subtract = function subtract(a, b) {
  return {
    'real': a.real - b.real,
    'imag': a.imag - b.imag
  };
};

// euler's identity e^x = cos(x) + sin(x)
var euler = function euler(kn, N) {
  var x = -2 * Math.PI * kn / N;
  return { 'real': Math.cos(x), 'imag': Math.sin(x) };
};

// complex conjugate
var conj = function conj(a) {
  a.imag *= -1;
  return a;
};

module.exports = {
  bitReverseArray: bitReverseArray,
  multiply: multiply,
  add: add,
  subtract: subtract,
  euler: euler,
  conj: conj,
  constructComplexArray: constructComplexArray
};

/***/ }),

/***/ "./node_modules/inherits/inherits_browser.js":
/*!***************************************************!*\
  !*** ./node_modules/inherits/inherits_browser.js ***!
  \***************************************************/
/*! no static exports found */
/***/ (function(module, exports) {

if (typeof Object.create === 'function') {
  // implementation from standard node.js 'util' module
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    ctor.prototype = Object.create(superCtor.prototype, {
      constructor: {
        value: ctor,
        enumerable: false,
        writable: true,
        configurable: true
      }
    });
  };
} else {
  // old school shim for old browsers
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    var TempCtor = function () {}
    TempCtor.prototype = superCtor.prototype
    ctor.prototype = new TempCtor()
    ctor.prototype.constructor = ctor
  }
}


/***/ }),

/***/ "./node_modules/process/browser.js":
/*!*****************************************!*\
  !*** ./node_modules/process/browser.js ***!
  \*****************************************/
/*! no static exports found */
/***/ (function(module, exports) {

// shim for using process in browser
var process = module.exports = {};

// cached from whatever global is present so that test runners that stub it
// don't break things.  But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals.  It's inside a
// function because try/catches deoptimize in certain engines.

var cachedSetTimeout;
var cachedClearTimeout;

function defaultSetTimout() {
    throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
    throw new Error('clearTimeout has not been defined');
}
(function () {
    try {
        if (typeof setTimeout === 'function') {
            cachedSetTimeout = setTimeout;
        } else {
            cachedSetTimeout = defaultSetTimout;
        }
    } catch (e) {
        cachedSetTimeout = defaultSetTimout;
    }
    try {
        if (typeof clearTimeout === 'function') {
            cachedClearTimeout = clearTimeout;
        } else {
            cachedClearTimeout = defaultClearTimeout;
        }
    } catch (e) {
        cachedClearTimeout = defaultClearTimeout;
    }
} ())
function runTimeout(fun) {
    if (cachedSetTimeout === setTimeout) {
        //normal enviroments in sane situations
        return setTimeout(fun, 0);
    }
    // if setTimeout wasn't available but was latter defined
    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
        cachedSetTimeout = setTimeout;
        return setTimeout(fun, 0);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedSetTimeout(fun, 0);
    } catch(e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
            return cachedSetTimeout.call(null, fun, 0);
        } catch(e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
            return cachedSetTimeout.call(this, fun, 0);
        }
    }


}
function runClearTimeout(marker) {
    if (cachedClearTimeout === clearTimeout) {
        //normal enviroments in sane situations
        return clearTimeout(marker);
    }
    // if clearTimeout wasn't available but was latter defined
    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
        cachedClearTimeout = clearTimeout;
        return clearTimeout(marker);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedClearTimeout(marker);
    } catch (e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
            return cachedClearTimeout.call(null, marker);
        } catch (e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
            return cachedClearTimeout.call(this, marker);
        }
    }



}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;

function cleanUpNextTick() {
    if (!draining || !currentQueue) {
        return;
    }
    draining = false;
    if (currentQueue.length) {
        queue = currentQueue.concat(queue);
    } else {
        queueIndex = -1;
    }
    if (queue.length) {
        drainQueue();
    }
}

function drainQueue() {
    if (draining) {
        return;
    }
    var timeout = runTimeout(cleanUpNextTick);
    draining = true;

    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        while (++queueIndex < len) {
            if (currentQueue) {
                currentQueue[queueIndex].run();
            }
        }
        queueIndex = -1;
        len = queue.length;
    }
    currentQueue = null;
    draining = false;
    runClearTimeout(timeout);
}

process.nextTick = function (fun) {
    var args = new Array(arguments.length - 1);
    if (arguments.length > 1) {
        for (var i = 1; i < arguments.length; i++) {
            args[i - 1] = arguments[i];
        }
    }
    queue.push(new Item(fun, args));
    if (queue.length === 1 && !draining) {
        runTimeout(drainQueue);
    }
};

// v8 likes predictible objects
function Item(fun, array) {
    this.fun = fun;
    this.array = array;
}
Item.prototype.run = function () {
    this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;

process.listeners = function (name) { return [] }

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };


/***/ }),

/***/ "./node_modules/webpack-stream/node_modules/util/support/isBufferBrowser.js":
/*!**********************************************************************************!*\
  !*** ./node_modules/webpack-stream/node_modules/util/support/isBufferBrowser.js ***!
  \**********************************************************************************/
/*! no static exports found */
/***/ (function(module, exports) {

module.exports = function isBuffer(arg) {
  return arg && typeof arg === 'object'
    && typeof arg.copy === 'function'
    && typeof arg.fill === 'function'
    && typeof arg.readUInt8 === 'function';
}

/***/ }),

/***/ "./node_modules/webpack-stream/node_modules/util/util.js":
/*!***************************************************************!*\
  !*** ./node_modules/webpack-stream/node_modules/util/util.js ***!
  \***************************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

/* WEBPACK VAR INJECTION */(function(process) {// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var getOwnPropertyDescriptors = Object.getOwnPropertyDescriptors ||
  function getOwnPropertyDescriptors(obj) {
    var keys = Object.keys(obj);
    var descriptors = {};
    for (var i = 0; i < keys.length; i++) {
      descriptors[keys[i]] = Object.getOwnPropertyDescriptor(obj, keys[i]);
    }
    return descriptors;
  };

var formatRegExp = /%[sdj%]/g;
exports.format = function(f) {
  if (!isString(f)) {
    var objects = [];
    for (var i = 0; i < arguments.length; i++) {
      objects.push(inspect(arguments[i]));
    }
    return objects.join(' ');
  }

  var i = 1;
  var args = arguments;
  var len = args.length;
  var str = String(f).replace(formatRegExp, function(x) {
    if (x === '%%') return '%';
    if (i >= len) return x;
    switch (x) {
      case '%s': return String(args[i++]);
      case '%d': return Number(args[i++]);
      case '%j':
        try {
          return JSON.stringify(args[i++]);
        } catch (_) {
          return '[Circular]';
        }
      default:
        return x;
    }
  });
  for (var x = args[i]; i < len; x = args[++i]) {
    if (isNull(x) || !isObject(x)) {
      str += ' ' + x;
    } else {
      str += ' ' + inspect(x);
    }
  }
  return str;
};


// Mark that a method should not be used.
// Returns a modified function which warns once by default.
// If --no-deprecation is set, then it is a no-op.
exports.deprecate = function(fn, msg) {
  if (typeof process !== 'undefined' && process.noDeprecation === true) {
    return fn;
  }

  // Allow for deprecating things in the process of starting up.
  if (typeof process === 'undefined') {
    return function() {
      return exports.deprecate(fn, msg).apply(this, arguments);
    };
  }

  var warned = false;
  function deprecated() {
    if (!warned) {
      if (process.throwDeprecation) {
        throw new Error(msg);
      } else if (process.traceDeprecation) {
        console.trace(msg);
      } else {
        console.error(msg);
      }
      warned = true;
    }
    return fn.apply(this, arguments);
  }

  return deprecated;
};


var debugs = {};
var debugEnviron;
exports.debuglog = function(set) {
  if (isUndefined(debugEnviron))
    debugEnviron = process.env.NODE_DEBUG || '';
  set = set.toUpperCase();
  if (!debugs[set]) {
    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
      var pid = process.pid;
      debugs[set] = function() {
        var msg = exports.format.apply(exports, arguments);
        console.error('%s %d: %s', set, pid, msg);
      };
    } else {
      debugs[set] = function() {};
    }
  }
  return debugs[set];
};


/**
 * Echos the value of a value. Trys to print the value out
 * in the best way possible given the different types.
 *
 * @param {Object} obj The object to print out.
 * @param {Object} opts Optional options object that alters the output.
 */
/* legacy: obj, showHidden, depth, colors*/
function inspect(obj, opts) {
  // default options
  var ctx = {
    seen: [],
    stylize: stylizeNoColor
  };
  // legacy...
  if (arguments.length >= 3) ctx.depth = arguments[2];
  if (arguments.length >= 4) ctx.colors = arguments[3];
  if (isBoolean(opts)) {
    // legacy...
    ctx.showHidden = opts;
  } else if (opts) {
    // got an "options" object
    exports._extend(ctx, opts);
  }
  // set default options
  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
  if (isUndefined(ctx.depth)) ctx.depth = 2;
  if (isUndefined(ctx.colors)) ctx.colors = false;
  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
  if (ctx.colors) ctx.stylize = stylizeWithColor;
  return formatValue(ctx, obj, ctx.depth);
}
exports.inspect = inspect;


// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = {
  'bold' : [1, 22],
  'italic' : [3, 23],
  'underline' : [4, 24],
  'inverse' : [7, 27],
  'white' : [37, 39],
  'grey' : [90, 39],
  'black' : [30, 39],
  'blue' : [34, 39],
  'cyan' : [36, 39],
  'green' : [32, 39],
  'magenta' : [35, 39],
  'red' : [31, 39],
  'yellow' : [33, 39]
};

// Don't use 'blue' not visible on cmd.exe
inspect.styles = {
  'special': 'cyan',
  'number': 'yellow',
  'boolean': 'yellow',
  'undefined': 'grey',
  'null': 'bold',
  'string': 'green',
  'date': 'magenta',
  // "name": intentionally not styling
  'regexp': 'red'
};


function stylizeWithColor(str, styleType) {
  var style = inspect.styles[styleType];

  if (style) {
    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
           '\u001b[' + inspect.colors[style][1] + 'm';
  } else {
    return str;
  }
}


function stylizeNoColor(str, styleType) {
  return str;
}


function arrayToHash(array) {
  var hash = {};

  array.forEach(function(val, idx) {
    hash[val] = true;
  });

  return hash;
}


function formatValue(ctx, value, recurseTimes) {
  // Provide a hook for user-specified inspect functions.
  // Check that value is an object with an inspect function on it
  if (ctx.customInspect &&
      value &&
      isFunction(value.inspect) &&
      // Filter out the util module, it's inspect function is special
      value.inspect !== exports.inspect &&
      // Also filter out any prototype objects using the circular check.
      !(value.constructor && value.constructor.prototype === value)) {
    var ret = value.inspect(recurseTimes, ctx);
    if (!isString(ret)) {
      ret = formatValue(ctx, ret, recurseTimes);
    }
    return ret;
  }

  // Primitive types cannot have properties
  var primitive = formatPrimitive(ctx, value);
  if (primitive) {
    return primitive;
  }

  // Look up the keys of the object.
  var keys = Object.keys(value);
  var visibleKeys = arrayToHash(keys);

  if (ctx.showHidden) {
    keys = Object.getOwnPropertyNames(value);
  }

  // IE doesn't make error fields non-enumerable
  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
  if (isError(value)
      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
    return formatError(value);
  }

  // Some type of object without properties can be shortcutted.
  if (keys.length === 0) {
    if (isFunction(value)) {
      var name = value.name ? ': ' + value.name : '';
      return ctx.stylize('[Function' + name + ']', 'special');
    }
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    }
    if (isDate(value)) {
      return ctx.stylize(Date.prototype.toString.call(value), 'date');
    }
    if (isError(value)) {
      return formatError(value);
    }
  }

  var base = '', array = false, braces = ['{', '}'];

  // Make Array say that they are Array
  if (isArray(value)) {
    array = true;
    braces = ['[', ']'];
  }

  // Make functions say that they are functions
  if (isFunction(value)) {
    var n = value.name ? ': ' + value.name : '';
    base = ' [Function' + n + ']';
  }

  // Make RegExps say that they are RegExps
  if (isRegExp(value)) {
    base = ' ' + RegExp.prototype.toString.call(value);
  }

  // Make dates with properties first say the date
  if (isDate(value)) {
    base = ' ' + Date.prototype.toUTCString.call(value);
  }

  // Make error with message first say the error
  if (isError(value)) {
    base = ' ' + formatError(value);
  }

  if (keys.length === 0 && (!array || value.length == 0)) {
    return braces[0] + base + braces[1];
  }

  if (recurseTimes < 0) {
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    } else {
      return ctx.stylize('[Object]', 'special');
    }
  }

  ctx.seen.push(value);

  var output;
  if (array) {
    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
  } else {
    output = keys.map(function(key) {
      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
    });
  }

  ctx.seen.pop();

  return reduceToSingleString(output, base, braces);
}


function formatPrimitive(ctx, value) {
  if (isUndefined(value))
    return ctx.stylize('undefined', 'undefined');
  if (isString(value)) {
    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
                                             .replace(/'/g, "\\'")
                                             .replace(/\\"/g, '"') + '\'';
    return ctx.stylize(simple, 'string');
  }
  if (isNumber(value))
    return ctx.stylize('' + value, 'number');
  if (isBoolean(value))
    return ctx.stylize('' + value, 'boolean');
  // For some reason typeof null is "object", so special case here.
  if (isNull(value))
    return ctx.stylize('null', 'null');
}


function formatError(value) {
  return '[' + Error.prototype.toString.call(value) + ']';
}


function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
  var output = [];
  for (var i = 0, l = value.length; i < l; ++i) {
    if (hasOwnProperty(value, String(i))) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          String(i), true));
    } else {
      output.push('');
    }
  }
  keys.forEach(function(key) {
    if (!key.match(/^\d+$/)) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          key, true));
    }
  });
  return output;
}


function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
  var name, str, desc;
  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
  if (desc.get) {
    if (desc.set) {
      str = ctx.stylize('[Getter/Setter]', 'special');
    } else {
      str = ctx.stylize('[Getter]', 'special');
    }
  } else {
    if (desc.set) {
      str = ctx.stylize('[Setter]', 'special');
    }
  }
  if (!hasOwnProperty(visibleKeys, key)) {
    name = '[' + key + ']';
  }
  if (!str) {
    if (ctx.seen.indexOf(desc.value) < 0) {
      if (isNull(recurseTimes)) {
        str = formatValue(ctx, desc.value, null);
      } else {
        str = formatValue(ctx, desc.value, recurseTimes - 1);
      }
      if (str.indexOf('\n') > -1) {
        if (array) {
          str = str.split('\n').map(function(line) {
            return '  ' + line;
          }).join('\n').substr(2);
        } else {
          str = '\n' + str.split('\n').map(function(line) {
            return '   ' + line;
          }).join('\n');
        }
      }
    } else {
      str = ctx.stylize('[Circular]', 'special');
    }
  }
  if (isUndefined(name)) {
    if (array && key.match(/^\d+$/)) {
      return str;
    }
    name = JSON.stringify('' + key);
    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
      name = name.substr(1, name.length - 2);
      name = ctx.stylize(name, 'name');
    } else {
      name = name.replace(/'/g, "\\'")
                 .replace(/\\"/g, '"')
                 .replace(/(^"|"$)/g, "'");
      name = ctx.stylize(name, 'string');
    }
  }

  return name + ': ' + str;
}


function reduceToSingleString(output, base, braces) {
  var numLinesEst = 0;
  var length = output.reduce(function(prev, cur) {
    numLinesEst++;
    if (cur.indexOf('\n') >= 0) numLinesEst++;
    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
  }, 0);

  if (length > 60) {
    return braces[0] +
           (base === '' ? '' : base + '\n ') +
           ' ' +
           output.join(',\n  ') +
           ' ' +
           braces[1];
  }

  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}


// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
  return Array.isArray(ar);
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return isObject(e) &&
      (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

exports.isBuffer = __webpack_require__(/*! ./support/isBuffer */ "./node_modules/webpack-stream/node_modules/util/support/isBufferBrowser.js");

function objectToString(o) {
  return Object.prototype.toString.call(o);
}


function pad(n) {
  return n < 10 ? '0' + n.toString(10) : n.toString(10);
}


var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
              'Oct', 'Nov', 'Dec'];

// 26 Feb 16:19:34
function timestamp() {
  var d = new Date();
  var time = [pad(d.getHours()),
              pad(d.getMinutes()),
              pad(d.getSeconds())].join(':');
  return [d.getDate(), months[d.getMonth()], time].join(' ');
}


// log is just a thin wrapper to console.log that prepends a timestamp
exports.log = function() {
  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
};


/**
 * Inherit the prototype methods from one constructor into another.
 *
 * The Function.prototype.inherits from lang.js rewritten as a standalone
 * function (not on Function.prototype). NOTE: If this file is to be loaded
 * during bootstrapping this function needs to be rewritten using some native
 * functions as prototype setup using normal JavaScript does not work as
 * expected during bootstrapping (see mirror.js in r114903).
 *
 * @param {function} ctor Constructor function which needs to inherit the
 *     prototype.
 * @param {function} superCtor Constructor function to inherit prototype from.
 */
exports.inherits = __webpack_require__(/*! inherits */ "./node_modules/inherits/inherits_browser.js");

exports._extend = function(origin, add) {
  // Don't do anything if add isn't an object
  if (!add || !isObject(add)) return origin;

  var keys = Object.keys(add);
  var i = keys.length;
  while (i--) {
    origin[keys[i]] = add[keys[i]];
  }
  return origin;
};

function hasOwnProperty(obj, prop) {
  return Object.prototype.hasOwnProperty.call(obj, prop);
}

var kCustomPromisifiedSymbol = typeof Symbol !== 'undefined' ? Symbol('util.promisify.custom') : undefined;

exports.promisify = function promisify(original) {
  if (typeof original !== 'function')
    throw new TypeError('The "original" argument must be of type Function');

  if (kCustomPromisifiedSymbol && original[kCustomPromisifiedSymbol]) {
    var fn = original[kCustomPromisifiedSymbol];
    if (typeof fn !== 'function') {
      throw new TypeError('The "util.promisify.custom" argument must be of type Function');
    }
    Object.defineProperty(fn, kCustomPromisifiedSymbol, {
      value: fn, enumerable: false, writable: false, configurable: true
    });
    return fn;
  }

  function fn() {
    var promiseResolve, promiseReject;
    var promise = new Promise(function (resolve, reject) {
      promiseResolve = resolve;
      promiseReject = reject;
    });

    var args = [];
    for (var i = 0; i < arguments.length; i++) {
      args.push(arguments[i]);
    }
    args.push(function (err, value) {
      if (err) {
        promiseReject(err);
      } else {
        promiseResolve(value);
      }
    });

    try {
      original.apply(this, args);
    } catch (err) {
      promiseReject(err);
    }

    return promise;
  }

  Object.setPrototypeOf(fn, Object.getPrototypeOf(original));

  if (kCustomPromisifiedSymbol) Object.defineProperty(fn, kCustomPromisifiedSymbol, {
    value: fn, enumerable: false, writable: false, configurable: true
  });
  return Object.defineProperties(
    fn,
    getOwnPropertyDescriptors(original)
  );
}

exports.promisify.custom = kCustomPromisifiedSymbol

function callbackifyOnRejected(reason, cb) {
  // `!reason` guard inspired by bluebird (Ref: https://goo.gl/t5IS6M).
  // Because `null` is a special error value in callbacks which means "no error
  // occurred", we error-wrap so the callback consumer can distinguish between
  // "the promise rejected with null" or "the promise fulfilled with undefined".
  if (!reason) {
    var newReason = new Error('Promise was rejected with a falsy value');
    newReason.reason = reason;
    reason = newReason;
  }
  return cb(reason);
}

function callbackify(original) {
  if (typeof original !== 'function') {
    throw new TypeError('The "original" argument must be of type Function');
  }

  // We DO NOT return the promise as it gives the user a false sense that
  // the promise is actually somehow related to the callback's execution
  // and that the callback throwing will reject the promise.
  function callbackified() {
    var args = [];
    for (var i = 0; i < arguments.length; i++) {
      args.push(arguments[i]);
    }

    var maybeCb = args.pop();
    if (typeof maybeCb !== 'function') {
      throw new TypeError('The last argument must be of type Function');
    }
    var self = this;
    var cb = function() {
      return maybeCb.apply(self, arguments);
    };
    // In true node style we process the callback on `nextTick` with all the
    // implications (stack, `uncaughtException`, `async_hooks`)
    original.apply(this, args)
      .then(function(ret) { process.nextTick(cb, null, ret) },
            function(rej) { process.nextTick(callbackifyOnRejected, rej, cb) });
  }

  Object.setPrototypeOf(callbackified, Object.getPrototypeOf(original));
  Object.defineProperties(callbackified,
                          getOwnPropertyDescriptors(original));
  return callbackified;
}
exports.callbackify = callbackify;

/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../../../process/browser.js */ "./node_modules/process/browser.js")))

/***/ }),

/***/ "./node_modules/webpack-stream/node_modules/webpack/buildin/global.js":
/*!***********************************!*\
  !*** (webpack)/buildin/global.js ***!
  \***********************************/
/*! no static exports found */
/***/ (function(module, exports) {

var g;

// This works in non-strict mode
g = (function() {
	return this;
})();

try {
	// This works if eval is allowed (see CSP)
	g = g || new Function("return this")();
} catch (e) {
	// This works if the window reference is available
	if (typeof window === "object") g = window;
}

// g can still be undefined, but nothing to do about it...
// We return undefined, instead of nothing here, so it's
// easier to handle this case. if(!global) { ...}

module.exports = g;


/***/ }),

/***/ "./src/extractors/chroma.js":
/*!**********************************!*\
  !*** ./src/extractors/chroma.js ***!
  \**********************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _nonIterableSpread(); }

function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance"); }

function _iterableToArray(iter) { if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === "[object Arguments]") return Array.from(iter); }

function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } }

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

/* harmony default export */ __webpack_exports__["default"] = (function (args) {
  if (_typeof(args.ampSpectrum) !== 'object') {
    throw new TypeError('Valid ampSpectrum is required to generate chroma');
  }

  if (_typeof(args.chromaFilterBank) !== 'object') {
    throw new TypeError('Valid chromaFilterBank is required to generate chroma');
  }

  var chromagram = args.chromaFilterBank.map(function (row, i) {
    return args.ampSpectrum.reduce(function (acc, v, j) {
      return acc + v * row[j];
    }, 0);
  });
  var maxVal = Math.max.apply(Math, _toConsumableArray(chromagram));
  return maxVal ? chromagram.map(function (v) {
    return v / maxVal;
  }) : chromagram;
});

/***/ }),

/***/ "./src/extractors/energy.js":
/*!**********************************!*\
  !*** ./src/extractors/energy.js ***!
  \**********************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var assert__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! assert */ "./node_modules/assert/assert.js");
/* harmony import */ var assert__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(assert__WEBPACK_IMPORTED_MODULE_0__);
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }


/* harmony default export */ __webpack_exports__["default"] = (function () {
  if (_typeof(arguments[0].signal) !== 'object') {
    throw new TypeError();
  }

  var energy = 0;

  for (var i = 0; i < arguments[0].signal.length; i++) {
    energy += Math.pow(Math.abs(arguments[0].signal[i]), 2);
  }

  return energy;
});

/***/ }),

/***/ "./src/extractors/extractorUtilities.js":
/*!**********************************************!*\
  !*** ./src/extractors/extractorUtilities.js ***!
  \**********************************************/
/*! exports provided: mu */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "mu", function() { return mu; });
function mu(i, amplitudeSpect) {
  var numerator = 0;
  var denominator = 0;

  for (var k = 0; k < amplitudeSpect.length; k++) {
    numerator += Math.pow(k, i) * Math.abs(amplitudeSpect[k]);
    denominator += amplitudeSpect[k];
  }

  return numerator / denominator;
}

/***/ }),

/***/ "./src/extractors/loudness.js":
/*!************************************!*\
  !*** ./src/extractors/loudness.js ***!
  \************************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

/* harmony default export */ __webpack_exports__["default"] = (function (args) {
  if (_typeof(args.ampSpectrum) !== 'object' || _typeof(args.barkScale) !== 'object') {
    throw new TypeError();
  }

  var NUM_BARK_BANDS = 24;
  var specific = new Float32Array(NUM_BARK_BANDS);
  var total = 0;
  var normalisedSpectrum = args.ampSpectrum;
  var bbLimits = new Int32Array(NUM_BARK_BANDS + 1);
  bbLimits[0] = 0;
  var currentBandEnd = args.barkScale[normalisedSpectrum.length - 1] / NUM_BARK_BANDS;
  var currentBand = 1;

  for (var i = 0; i < normalisedSpectrum.length; i++) {
    while (args.barkScale[i] > currentBandEnd) {
      bbLimits[currentBand++] = i;
      currentBandEnd = currentBand * args.barkScale[normalisedSpectrum.length - 1] / NUM_BARK_BANDS;
    }
  }

  bbLimits[NUM_BARK_BANDS] = normalisedSpectrum.length - 1; //process

  for (var _i = 0; _i < NUM_BARK_BANDS; _i++) {
    var sum = 0;

    for (var j = bbLimits[_i]; j < bbLimits[_i + 1]; j++) {
      sum += normalisedSpectrum[j];
    }

    specific[_i] = Math.pow(sum, 0.23);
  } //get total loudness


  for (var _i2 = 0; _i2 < specific.length; _i2++) {
    total += specific[_i2];
  }

  return {
    specific: specific,
    total: total
  };
});

/***/ }),

/***/ "./src/extractors/mfcc.js":
/*!********************************!*\
  !*** ./src/extractors/mfcc.js ***!
  \********************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var _powerSpectrum__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./powerSpectrum */ "./src/extractors/powerSpectrum.js");
/* harmony import */ var _utilities__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./../utilities */ "./src/utilities.js");
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }





var dct = __webpack_require__(/*! dct */ "./node_modules/dct/index.js");

/* harmony default export */ __webpack_exports__["default"] = (function (args) {
  if (_typeof(args.ampSpectrum) !== 'object') {
    throw new TypeError('Valid ampSpectrum is required to generate MFCC');
  }

  if (_typeof(args.melFilterBank) !== 'object') {
    throw new TypeError('Valid melFilterBank is required to generate MFCC');
  }

  var numberOfMFCCCoefficients = Math.min(40, Math.max(1, args.numberOfMFCCCoefficients || 13)); // Tutorial from:
  // http://practicalcryptography.com/miscellaneous/machine-learning
  // /guide-mel-frequency-cepstral-coefficients-mfccs/

  var powSpec = Object(_powerSpectrum__WEBPACK_IMPORTED_MODULE_0__["default"])(args);
  var numFilters = args.melFilterBank.length;
  var filtered = Array(numFilters);

  if (numFilters < numberOfMFCCCoefficients) {
    throw new Error("Insufficient filter bank for requested number of coefficients");
  }

  var loggedMelBands = new Float32Array(numFilters);

  for (var i = 0; i < loggedMelBands.length; i++) {
    filtered[i] = new Float32Array(args.bufferSize / 2);
    loggedMelBands[i] = 0;

    for (var j = 0; j < args.bufferSize / 2; j++) {
      //point-wise multiplication between power spectrum and filterbanks.
      filtered[i][j] = args.melFilterBank[i][j] * powSpec[j]; //summing up all of the coefficients into one array

      loggedMelBands[i] += filtered[i][j];
    } //log each coefficient.


    loggedMelBands[i] = Math.log(loggedMelBands[i] + 1);
  } //dct


  var loggedMelBandsArray = Array.prototype.slice.call(loggedMelBands);
  var mfccs = dct(loggedMelBandsArray).slice(0, numberOfMFCCCoefficients);
  return mfccs;
});

/***/ }),

/***/ "./src/extractors/perceptualSharpness.js":
/*!***********************************************!*\
  !*** ./src/extractors/perceptualSharpness.js ***!
  \***********************************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var _loudness__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./loudness */ "./src/extractors/loudness.js");
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }


/* harmony default export */ __webpack_exports__["default"] = (function () {
  if (_typeof(arguments[0].signal) !== 'object') {
    throw new TypeError();
  }

  var loudnessValue = Object(_loudness__WEBPACK_IMPORTED_MODULE_0__["default"])(arguments[0]);
  var spec = loudnessValue.specific;
  var output = 0;

  for (var i = 0; i < spec.length; i++) {
    if (i < 15) {
      output += (i + 1) * spec[i + 1];
    } else {
      output += 0.066 * Math.exp(0.171 * (i + 1));
    }
  }

  output *= 0.11 / loudnessValue.total;
  return output;
});

/***/ }),

/***/ "./src/extractors/perceptualSpread.js":
/*!********************************************!*\
  !*** ./src/extractors/perceptualSpread.js ***!
  \********************************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var _loudness__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./loudness */ "./src/extractors/loudness.js");
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }


/* harmony default export */ __webpack_exports__["default"] = (function () {
  if (_typeof(arguments[0].signal) !== 'object') {
    throw new TypeError();
  }

  var loudnessValue = Object(_loudness__WEBPACK_IMPORTED_MODULE_0__["default"])(arguments[0]);
  var max = 0;

  for (var i = 0; i < loudnessValue.specific.length; i++) {
    if (loudnessValue.specific[i] > max) {
      max = loudnessValue.specific[i];
    }
  }

  var spread = Math.pow((loudnessValue.total - max) / loudnessValue.total, 2);
  return spread;
});

/***/ }),

/***/ "./src/extractors/powerSpectrum.js":
/*!*****************************************!*\
  !*** ./src/extractors/powerSpectrum.js ***!
  \*****************************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

/* harmony default export */ __webpack_exports__["default"] = (function () {
  if (_typeof(arguments[0].ampSpectrum) !== 'object') {
    throw new TypeError();
  }

  var powerSpectrum = new Float32Array(arguments[0].ampSpectrum.length);

  for (var i = 0; i < powerSpectrum.length; i++) {
    powerSpectrum[i] = Math.pow(arguments[0].ampSpectrum[i], 2);
  }

  return powerSpectrum;
});

/***/ }),

/***/ "./src/extractors/rms.js":
/*!*******************************!*\
  !*** ./src/extractors/rms.js ***!
  \*******************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

/* harmony default export */ __webpack_exports__["default"] = (function (args) {
  if (_typeof(args.signal) !== 'object') {
    throw new TypeError();
  }

  var rms = 0;

  for (var i = 0; i < args.signal.length; i++) {
    rms += Math.pow(args.signal[i], 2);
  }

  rms = rms / args.signal.length;
  rms = Math.sqrt(rms);
  return rms;
});

/***/ }),

/***/ "./src/extractors/spectralCentroid.js":
/*!********************************************!*\
  !*** ./src/extractors/spectralCentroid.js ***!
  \********************************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var _extractorUtilities__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./extractorUtilities */ "./src/extractors/extractorUtilities.js");
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }


/* harmony default export */ __webpack_exports__["default"] = (function () {
  if (_typeof(arguments[0].ampSpectrum) !== 'object') {
    throw new TypeError();
  }

  return Object(_extractorUtilities__WEBPACK_IMPORTED_MODULE_0__["mu"])(1, arguments[0].ampSpectrum);
});

/***/ }),

/***/ "./src/extractors/spectralFlatness.js":
/*!********************************************!*\
  !*** ./src/extractors/spectralFlatness.js ***!
  \********************************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

/* harmony default export */ __webpack_exports__["default"] = (function () {
  if (_typeof(arguments[0].ampSpectrum) !== 'object') {
    throw new TypeError();
  }

  var numerator = 0;
  var denominator = 0;

  for (var i = 0; i < arguments[0].ampSpectrum.length; i++) {
    numerator += Math.log(arguments[0].ampSpectrum[i]);
    denominator += arguments[0].ampSpectrum[i];
  }

  return Math.exp(numerator / arguments[0].ampSpectrum.length) * arguments[0].ampSpectrum.length / denominator;
});

/***/ }),

/***/ "./src/extractors/spectralFlux.js":
/*!****************************************!*\
  !*** ./src/extractors/spectralFlux.js ***!
  \****************************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

/* harmony default export */ __webpack_exports__["default"] = (function (args) {
  if (_typeof(args.signal) !== 'object' || _typeof(args.previousSignal) != 'object') {
    throw new TypeError();
  }

  var sf = 0;

  for (var i = -(args.bufferSize / 2); i < signal.length / 2 - 1; i++) {
    x = Math.abs(args.signal[i]) - Math.abs(args.previousSignal[i]);
    sf += (x + Math.abs(x)) / 2;
  }

  return sf;
});

/***/ }),

/***/ "./src/extractors/spectralKurtosis.js":
/*!********************************************!*\
  !*** ./src/extractors/spectralKurtosis.js ***!
  \********************************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var _extractorUtilities__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./extractorUtilities */ "./src/extractors/extractorUtilities.js");
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }


/* harmony default export */ __webpack_exports__["default"] = (function () {
  if (_typeof(arguments[0].ampSpectrum) !== 'object') {
    throw new TypeError();
  }

  var ampspec = arguments[0].ampSpectrum;
  var mu1 = Object(_extractorUtilities__WEBPACK_IMPORTED_MODULE_0__["mu"])(1, ampspec);
  var mu2 = Object(_extractorUtilities__WEBPACK_IMPORTED_MODULE_0__["mu"])(2, ampspec);
  var mu3 = Object(_extractorUtilities__WEBPACK_IMPORTED_MODULE_0__["mu"])(3, ampspec);
  var mu4 = Object(_extractorUtilities__WEBPACK_IMPORTED_MODULE_0__["mu"])(4, ampspec);
  var numerator = -3 * Math.pow(mu1, 4) + 6 * mu1 * mu2 - 4 * mu1 * mu3 + mu4;
  var denominator = Math.pow(Math.sqrt(mu2 - Math.pow(mu1, 2)), 4);
  return numerator / denominator;
});

/***/ }),

/***/ "./src/extractors/spectralRolloff.js":
/*!*******************************************!*\
  !*** ./src/extractors/spectralRolloff.js ***!
  \*******************************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

/* harmony default export */ __webpack_exports__["default"] = (function () {
  if (_typeof(arguments[0].ampSpectrum) !== 'object') {
    throw new TypeError();
  }

  var ampspec = arguments[0].ampSpectrum; //calculate nyquist bin

  var nyqBin = arguments[0].sampleRate / (2 * (ampspec.length - 1));
  var ec = 0;

  for (var i = 0; i < ampspec.length; i++) {
    ec += ampspec[i];
  }

  var threshold = 0.99 * ec;
  var n = ampspec.length - 1;

  while (ec > threshold && n >= 0) {
    ec -= ampspec[n];
    --n;
  }

  return (n + 1) * nyqBin;
});

/***/ }),

/***/ "./src/extractors/spectralSkewness.js":
/*!********************************************!*\
  !*** ./src/extractors/spectralSkewness.js ***!
  \********************************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var _extractorUtilities__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./extractorUtilities */ "./src/extractors/extractorUtilities.js");
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }


/* harmony default export */ __webpack_exports__["default"] = (function (args) {
  if (_typeof(args.ampSpectrum) !== 'object') {
    throw new TypeError();
  }

  var mu1 = Object(_extractorUtilities__WEBPACK_IMPORTED_MODULE_0__["mu"])(1, args.ampSpectrum);
  var mu2 = Object(_extractorUtilities__WEBPACK_IMPORTED_MODULE_0__["mu"])(2, args.ampSpectrum);
  var mu3 = Object(_extractorUtilities__WEBPACK_IMPORTED_MODULE_0__["mu"])(3, args.ampSpectrum);
  var numerator = 2 * Math.pow(mu1, 3) - 3 * mu1 * mu2 + mu3;
  var denominator = Math.pow(Math.sqrt(mu2 - Math.pow(mu1, 2)), 3);
  return numerator / denominator;
});

/***/ }),

/***/ "./src/extractors/spectralSlope.js":
/*!*****************************************!*\
  !*** ./src/extractors/spectralSlope.js ***!
  \*****************************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

/* harmony default export */ __webpack_exports__["default"] = (function (args) {
  if (_typeof(args.ampSpectrum) !== 'object') {
    throw new TypeError();
  } //linear regression


  var ampSum = 0;
  var freqSum = 0;
  var freqs = new Float32Array(args.ampSpectrum.length);
  var powFreqSum = 0;
  var ampFreqSum = 0;

  for (var i = 0; i < args.ampSpectrum.length; i++) {
    ampSum += args.ampSpectrum[i];
    var curFreq = i * args.sampleRate / args.bufferSize;
    freqs[i] = curFreq;
    powFreqSum += curFreq * curFreq;
    freqSum += curFreq;
    ampFreqSum += curFreq * args.ampSpectrum[i];
  }

  return (args.ampSpectrum.length * ampFreqSum - freqSum * ampSum) / (ampSum * (powFreqSum - Math.pow(freqSum, 2)));
});

/***/ }),

/***/ "./src/extractors/spectralSpread.js":
/*!******************************************!*\
  !*** ./src/extractors/spectralSpread.js ***!
  \******************************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var _extractorUtilities__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./extractorUtilities */ "./src/extractors/extractorUtilities.js");
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }


/* harmony default export */ __webpack_exports__["default"] = (function (args) {
  if (_typeof(args.ampSpectrum) !== 'object') {
    throw new TypeError();
  }

  return Math.sqrt(Object(_extractorUtilities__WEBPACK_IMPORTED_MODULE_0__["mu"])(2, args.ampSpectrum) - Math.pow(Object(_extractorUtilities__WEBPACK_IMPORTED_MODULE_0__["mu"])(1, args.ampSpectrum), 2));
});

/***/ }),

/***/ "./src/extractors/zcr.js":
/*!*******************************!*\
  !*** ./src/extractors/zcr.js ***!
  \*******************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

/* harmony default export */ __webpack_exports__["default"] = (function () {
  if (_typeof(arguments[0].signal) !== 'object') {
    throw new TypeError();
  }

  var zcr = 0;

  for (var i = 1; i < arguments[0].signal.length; i++) {
    if (arguments[0].signal[i - 1] >= 0 && arguments[0].signal[i] < 0 || arguments[0].signal[i - 1] < 0 && arguments[0].signal[i] >= 0) {
      zcr++;
    }
  }

  return zcr;
});

/***/ }),

/***/ "./src/featureExtractors.js":
/*!**********************************!*\
  !*** ./src/featureExtractors.js ***!
  \**********************************/
/*! exports provided: buffer, rms, energy, complexSpectrum, spectralSlope, spectralCentroid, spectralRolloff, spectralFlatness, spectralSpread, spectralSkewness, spectralKurtosis, amplitudeSpectrum, zcr, loudness, perceptualSpread, perceptualSharpness, powerSpectrum, mfcc, chroma, spectralFlux */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "buffer", function() { return buffer; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "complexSpectrum", function() { return complexSpectrum; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "amplitudeSpectrum", function() { return amplitudeSpectrum; });
/* harmony import */ var _extractors_rms__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./extractors/rms */ "./src/extractors/rms.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "rms", function() { return _extractors_rms__WEBPACK_IMPORTED_MODULE_0__["default"]; });

/* harmony import */ var _extractors_energy__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./extractors/energy */ "./src/extractors/energy.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "energy", function() { return _extractors_energy__WEBPACK_IMPORTED_MODULE_1__["default"]; });

/* harmony import */ var _extractors_spectralSlope__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./extractors/spectralSlope */ "./src/extractors/spectralSlope.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "spectralSlope", function() { return _extractors_spectralSlope__WEBPACK_IMPORTED_MODULE_2__["default"]; });

/* harmony import */ var _extractors_spectralCentroid__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! ./extractors/spectralCentroid */ "./src/extractors/spectralCentroid.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "spectralCentroid", function() { return _extractors_spectralCentroid__WEBPACK_IMPORTED_MODULE_3__["default"]; });

/* harmony import */ var _extractors_spectralRolloff__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(/*! ./extractors/spectralRolloff */ "./src/extractors/spectralRolloff.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "spectralRolloff", function() { return _extractors_spectralRolloff__WEBPACK_IMPORTED_MODULE_4__["default"]; });

/* harmony import */ var _extractors_spectralFlatness__WEBPACK_IMPORTED_MODULE_5__ = __webpack_require__(/*! ./extractors/spectralFlatness */ "./src/extractors/spectralFlatness.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "spectralFlatness", function() { return _extractors_spectralFlatness__WEBPACK_IMPORTED_MODULE_5__["default"]; });

/* harmony import */ var _extractors_spectralSpread__WEBPACK_IMPORTED_MODULE_6__ = __webpack_require__(/*! ./extractors/spectralSpread */ "./src/extractors/spectralSpread.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "spectralSpread", function() { return _extractors_spectralSpread__WEBPACK_IMPORTED_MODULE_6__["default"]; });

/* harmony import */ var _extractors_spectralSkewness__WEBPACK_IMPORTED_MODULE_7__ = __webpack_require__(/*! ./extractors/spectralSkewness */ "./src/extractors/spectralSkewness.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "spectralSkewness", function() { return _extractors_spectralSkewness__WEBPACK_IMPORTED_MODULE_7__["default"]; });

/* harmony import */ var _extractors_spectralKurtosis__WEBPACK_IMPORTED_MODULE_8__ = __webpack_require__(/*! ./extractors/spectralKurtosis */ "./src/extractors/spectralKurtosis.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "spectralKurtosis", function() { return _extractors_spectralKurtosis__WEBPACK_IMPORTED_MODULE_8__["default"]; });

/* harmony import */ var _extractors_zcr__WEBPACK_IMPORTED_MODULE_9__ = __webpack_require__(/*! ./extractors/zcr */ "./src/extractors/zcr.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "zcr", function() { return _extractors_zcr__WEBPACK_IMPORTED_MODULE_9__["default"]; });

/* harmony import */ var _extractors_loudness__WEBPACK_IMPORTED_MODULE_10__ = __webpack_require__(/*! ./extractors/loudness */ "./src/extractors/loudness.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "loudness", function() { return _extractors_loudness__WEBPACK_IMPORTED_MODULE_10__["default"]; });

/* harmony import */ var _extractors_perceptualSpread__WEBPACK_IMPORTED_MODULE_11__ = __webpack_require__(/*! ./extractors/perceptualSpread */ "./src/extractors/perceptualSpread.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "perceptualSpread", function() { return _extractors_perceptualSpread__WEBPACK_IMPORTED_MODULE_11__["default"]; });

/* harmony import */ var _extractors_perceptualSharpness__WEBPACK_IMPORTED_MODULE_12__ = __webpack_require__(/*! ./extractors/perceptualSharpness */ "./src/extractors/perceptualSharpness.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "perceptualSharpness", function() { return _extractors_perceptualSharpness__WEBPACK_IMPORTED_MODULE_12__["default"]; });

/* harmony import */ var _extractors_mfcc__WEBPACK_IMPORTED_MODULE_13__ = __webpack_require__(/*! ./extractors/mfcc */ "./src/extractors/mfcc.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "mfcc", function() { return _extractors_mfcc__WEBPACK_IMPORTED_MODULE_13__["default"]; });

/* harmony import */ var _extractors_chroma__WEBPACK_IMPORTED_MODULE_14__ = __webpack_require__(/*! ./extractors/chroma */ "./src/extractors/chroma.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "chroma", function() { return _extractors_chroma__WEBPACK_IMPORTED_MODULE_14__["default"]; });

/* harmony import */ var _extractors_powerSpectrum__WEBPACK_IMPORTED_MODULE_15__ = __webpack_require__(/*! ./extractors/powerSpectrum */ "./src/extractors/powerSpectrum.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "powerSpectrum", function() { return _extractors_powerSpectrum__WEBPACK_IMPORTED_MODULE_15__["default"]; });

/* harmony import */ var _extractors_spectralFlux__WEBPACK_IMPORTED_MODULE_16__ = __webpack_require__(/*! ./extractors/spectralFlux */ "./src/extractors/spectralFlux.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "spectralFlux", function() { return _extractors_spectralFlux__WEBPACK_IMPORTED_MODULE_16__["default"]; });



















var buffer = function buffer(args) {
  return args.signal;
};

var complexSpectrum = function complexSpectrum(args) {
  return args.complexSpectrum;
};

var amplitudeSpectrum = function amplitudeSpectrum(args) {
  return args.ampSpectrum;
};



/***/ }),

/***/ "./src/index.js":
/*!**********************!*\
  !*** ./src/index.js ***!
  \**********************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

module.exports = __webpack_require__(/*! ./main */ "./src/main.js")["default"];

/***/ }),

/***/ "./src/main.js":
/*!*********************!*\
  !*** ./src/main.js ***!
  \*********************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var _utilities__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./utilities */ "./src/utilities.js");
/* harmony import */ var _featureExtractors__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./featureExtractors */ "./src/featureExtractors.js");
/* harmony import */ var fftjs__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! fftjs */ "./node_modules/fftjs/dist/fft.js");
/* harmony import */ var fftjs__WEBPACK_IMPORTED_MODULE_2___default = /*#__PURE__*/__webpack_require__.n(fftjs__WEBPACK_IMPORTED_MODULE_2__);
/* harmony import */ var _meyda_wa__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! ./meyda-wa */ "./src/meyda-wa.js");
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }





/**
 * Meyda Module
 * @module meyda
 */

/**
 * Options for constructing a MeydaAnalyzer
 * @typedef {Object} MeydaOptions
 * @property {AudioContext} audioContext - The Audio Context for the MeydaAnalyzer to operate in.
 * @property {AudioNode} source - The Audio Node for Meyda to listen to.
 * @property {number} [bufferSize] - The size of the buffer.
 * @property {number} [hopSize] - The hop size between buffers.
 * @property {number} [sampleRate] - The number of samples per second in the audio context.
 * @property {Function} [callback] - A function to receive the frames of audio features
 * @property {string} [windowingFunction] - The Windowing Function to apply to the signal before transformation to the frequency domain
 * @property {string|Array.<string>} [featureExtractors] - Specify the feature extractors you want to run on the audio.
 * @property {boolean} [startImmediately] - Pass `true` to start feature extraction immediately
 * @property {number} [numberOfMFCCCoefficients] - The number of MFCC co-efficients that the MFCC feature extractor should return
 */

/**
 * Web Audio context
 * Either an {@link AudioContext|https://developer.mozilla.org/en-US/docs/Web/API/AudioContext}
 * or an {@link OfflineAudioContext|https://developer.mozilla.org/en-US/docs/Web/API/OfflineAudioContext}
 * @typedef {Object} AudioContext
 */

/**
 * AudioNode
 * A Web AudioNode
 * @typedef {Object} AudioNode
 */

/**
 * ScriptProcessorNode
 * A Web Audio ScriptProcessorNode
 * @typedef {Object} ScriptProcessorNode
 */

/**
 * @class Meyda
 * @hideconstructor
 * @classdesc
 * The schema for the default export of the Meyda library.
 * @example
 * var Meyda = require('meyda');
 */

var Meyda = {
  /**
   * Meyda stores a reference to the relevant audio context here for use inside
   * the Web Audio API.
   * @instance
   * @member {AudioContext}
   */
  audioContext: null,

  /**
   * Meyda keeps an internal ScriptProcessorNode in which it runs audio feature
   * extraction. The ScriptProcessorNode is stored in this member variable.
   * @instance
   * @member {ScriptProcessorNode}
   */
  spn: null,

  /**
   * The length of each buffer that Meyda will extract audio on. When recieving
   * input via the Web Audio API, the Script Processor Node chunks incoming audio
   * into arrays of this length. Longer buffers allow for more precision in the
   * frequency domain, but increase the amount of time it takes for Meyda to
   * output a set of audio features for the buffer. You can calculate how many
   * sets of audio features Meyda will output per second by dividing the
   * buffer size by the sample rate. If you're using Meyda for visualisation,
   * make sure that you're collecting audio features at a rate that's faster
   * than or equal to the video frame rate you expect.
   * @instance
   * @member {number}
   */
  bufferSize: 512,

  /**
   * The number of samples per second of the incoming audio. This affects
   * feature extraction outside of the context of the Web Audio API, and must be
   * set accurately - otherwise calculations will be off.
   * @instance
   * @member {number}
   */
  sampleRate: 44100,

  /**
   * The number of Mel bands to use in the Mel Frequency Cepstral Co-efficients
   * feature extractor
   * @instance
   * @member {number}
   */
  melBands: 26,

  /**
   * The number of bands to divide the spectrum into for the Chroma feature
   * extractor. 12 is the standard number of semitones per octave in the western
   * music tradition, but Meyda can use an arbitrary number of bands, which
   * can be useful for microtonal music.
   * @instance
   * @member {number}
   */
  chromaBands: 12,

  /**
   * A function you can provide that will be called for each buffer that Meyda
   * receives from its source node
   * @instance
   * @member {Function}
   */
  callback: null,

  /**
   * Specify the windowing function to apply to the buffer before the
   * transformation from the time domain to the frequency domain is performed
   *
   * The default windowing function is the hanning window.
   *
   * @instance
   * @member {string}
   */
  windowingFunction: 'hanning',

  /**
   * @member {object}
   */
  featureExtractors: _featureExtractors__WEBPACK_IMPORTED_MODULE_1__,
  EXTRACTION_STARTED: false,

  /**
   * The number of MFCC co-efficients that the MFCC feature extractor should return
   * @instance
   * @member {number}
   */
  numberOfMFCCCoefficients: 13,
  _featuresToExtract: [],
  windowing: _utilities__WEBPACK_IMPORTED_MODULE_0__["applyWindow"],
  _errors: {
    notPow2: new Error('Meyda: Buffer size must be a power of 2, e.g. 64 or 512'),
    featureUndef: new Error('Meyda: No features defined.'),
    invalidFeatureFmt: new Error('Meyda: Invalid feature format'),
    invalidInput: new Error('Meyda: Invalid input.'),
    noAC: new Error('Meyda: No AudioContext specified.'),
    noSource: new Error('Meyda: No source node specified.')
  },

  /**
   * @summary
   * Create a MeydaAnalyzer
   *
   * A factory function for creating a MeydaAnalyzer, the interface for using
   * Meyda in the context of Web Audio.
   *
   * @method
   * @param {MeydaOptions} options Options - an object containing configuration
   * @returns {MeydaAnalyzer}
   * @example
   * const analyzer = Meyda.createMeydaAnalyzer({
   *   "audioContext": audioContext,
   *   "source": source,
   *   "bufferSize": 512,
   *   "featureExtractors": ["rms"],
   *   "inputs": 2,
   *   "callback": features => {
   *     levelRangeElement.value = features.rms;
   *   }
   * });
   */
  createMeydaAnalyzer: function createMeydaAnalyzer(options) {
    return new _meyda_wa__WEBPACK_IMPORTED_MODULE_3__["MeydaAnalyzer"](options, Object.assign({}, Meyda));
  },

  /**
   * Extract an audio feature from a buffer
   *
   * Unless `meyda.windowingFunction` is set otherwise, `extract` will
   * internally apply a hanning window to the buffer prior to conversion into
   * the frequency domain.
   *
   * @function
   * @param {(string|Array.<string>)} feature - the feature you want to extract
   * @param {Array.<number>} signal
   * An array of numbers that represents the signal. It should be of length
   * `meyda.bufferSize`
   * @param {Array.<number>} [previousSignal] - the previous buffer
   * @returns {object} Features
   * @example
   * meyda.bufferSize = 2048;
   * const features = meyda.extract(['zcr', 'spectralCentroid'], signal);
   */
  extract: function extract(feature, signal, previousSignal) {
    var _this = this;

    if (!signal) throw this._errors.invalidInput;else if (_typeof(signal) != 'object') throw this._errors.invalidInput;else if (!feature) throw this._errors.featureUndef;else if (!_utilities__WEBPACK_IMPORTED_MODULE_0__["isPowerOfTwo"](signal.length)) throw this._errors.notPow2;

    if (typeof this.barkScale == 'undefined' || this.barkScale.length != this.bufferSize) {
      this.barkScale = _utilities__WEBPACK_IMPORTED_MODULE_0__["createBarkScale"](this.bufferSize, this.sampleRate, this.bufferSize);
    } // Recalculate mel bank if buffer length changed


    if (typeof this.melFilterBank == 'undefined' || this.barkScale.length != this.bufferSize || this.melFilterBank.length != this.melBands) {
      this.melFilterBank = _utilities__WEBPACK_IMPORTED_MODULE_0__["createMelFilterBank"](Math.max(this.melBands, this.numberOfMFCCCoefficients), this.sampleRate, this.bufferSize);
    } // Recalculate chroma bank if buffer length changed


    if (typeof this.chromaFilterBank == 'undefined' || this.chromaFilterBank.length != this.chromaBands) {
      this.chromaFilterBank = _utilities__WEBPACK_IMPORTED_MODULE_0__["createChromaFilterBank"](this.chromaBands, this.sampleRate, this.bufferSize);
    }

    if (typeof signal.buffer == 'undefined') {
      //signal is a normal array, convert to F32A
      this.signal = _utilities__WEBPACK_IMPORTED_MODULE_0__["arrayToTyped"](signal);
    } else {
      this.signal = signal;
    }

    var preparedSignal = prepareSignalWithSpectrum(signal, this.windowingFunction, this.bufferSize);
    this.signal = preparedSignal.windowedSignal;
    this.complexSpectrum = preparedSignal.complexSpectrum;
    this.ampSpectrum = preparedSignal.ampSpectrum;

    if (previousSignal) {
      var _preparedSignal = prepareSignalWithSpectrum(previousSignal, this.windowingFunction, this.bufferSize);

      this.previousSignal = _preparedSignal.windowedSignal;
      this.previousComplexSpectrum = _preparedSignal.complexSpectrum;
      this.previousAmpSpectrum = _preparedSignal.ampSpectrum;
    }

    var extract = function extract(feature) {
      return _this.featureExtractors[feature]({
        ampSpectrum: _this.ampSpectrum,
        chromaFilterBank: _this.chromaFilterBank,
        complexSpectrum: _this.complexSpectrum,
        signal: _this.signal,
        bufferSize: _this.bufferSize,
        sampleRate: _this.sampleRate,
        barkScale: _this.barkScale,
        melFilterBank: _this.melFilterBank,
        previousSignal: _this.previousSignal,
        previousAmpSpectrum: _this.previousAmpSpectrum,
        previousComplexSpectrum: _this.previousComplexSpectrum,
        numberOfMFCCCoefficients: _this.numberOfMFCCCoefficients
      });
    };

    if (_typeof(feature) === 'object') {
      return feature.reduce(function (acc, el) {
        return Object.assign({}, acc, _defineProperty({}, el, extract(el)));
      }, {});
    } else if (typeof feature === 'string') {
      return extract(feature);
    } else {
      throw this._errors.invalidFeatureFmt;
    }
  }
};

var prepareSignalWithSpectrum = function prepareSignalWithSpectrum(signal, windowingFunction, bufferSize) {
  var preparedSignal = {};

  if (typeof signal.buffer == 'undefined') {
    //signal is a normal array, convert to F32A
    preparedSignal.signal = _utilities__WEBPACK_IMPORTED_MODULE_0__["arrayToTyped"](signal);
  } else {
    preparedSignal.signal = signal;
  }

  preparedSignal.windowedSignal = _utilities__WEBPACK_IMPORTED_MODULE_0__["applyWindow"](preparedSignal.signal, windowingFunction);
  preparedSignal.complexSpectrum = Object(fftjs__WEBPACK_IMPORTED_MODULE_2__["fft"])(preparedSignal.windowedSignal);
  preparedSignal.ampSpectrum = new Float32Array(bufferSize / 2);

  for (var i = 0; i < bufferSize / 2; i++) {
    preparedSignal.ampSpectrum[i] = Math.sqrt(Math.pow(preparedSignal.complexSpectrum.real[i], 2) + Math.pow(preparedSignal.complexSpectrum.imag[i], 2));
  }

  return preparedSignal;
};
/**
 * The Meyda class
 * @type {Meyda}
 */


/* harmony default export */ __webpack_exports__["default"] = (Meyda);
if (typeof window !== 'undefined') window.Meyda = Meyda;

/***/ }),

/***/ "./src/meyda-wa.js":
/*!*************************!*\
  !*** ./src/meyda-wa.js ***!
  \*************************/
/*! exports provided: MeydaAnalyzer */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "MeydaAnalyzer", function() { return MeydaAnalyzer; });
/* harmony import */ var _utilities__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./utilities */ "./src/utilities.js");
/* harmony import */ var _featureExtractors__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./featureExtractors */ "./src/featureExtractors.js");
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }



/**
  * MeydaAnalyzer
  * @classdesc
  * Meyda's interface to the Web Audio API. MeydaAnalyzer abstracts an API on
  * top of the Web Audio API's ScriptProcessorNode, running the Meyda audio
  * feature extractors inside that context.
  *
  * MeydaAnalyzer's constructor should not be called directly - MeydaAnalyzer
  * objects should be generated using the {@link Meyda.createMeydaAnalyzer}
  * factory function in the main Meyda class.
  *
  * @example
  * const analyzer = Meyda.createMeydaAnalyzer({
  *   "audioContext": audioContext,
  *   "source": source,
  *   "bufferSize": 512,
  *   "featureExtractors": ["rms"],
  *   "inputs": 2,
  *   "numberOfMFCCCoefficients": 20
  *   "callback": features => {
  *     levelRangeElement.value = features.rms;
  *   }
  * });
  * @hideconstructor
  */

var MeydaAnalyzer =
/*#__PURE__*/
function () {
  function MeydaAnalyzer(options, _this) {
    var _this2 = this;

    _classCallCheck(this, MeydaAnalyzer);

    this._m = _this;

    if (!options.audioContext) {
      throw this._m.errors.noAC;
    } else if (options.bufferSize && !_utilities__WEBPACK_IMPORTED_MODULE_0__["isPowerOfTwo"](options.bufferSize)) {
      throw this._m._errors.notPow2;
    } else if (!options.source) {
      throw this._m._errors.noSource;
    }

    this._m.audioContext = options.audioContext; // TODO: validate options

    this._m.bufferSize = options.bufferSize || this._m.bufferSize || 256;
    this._m.hopSize = options.hopSize || this._m.hopSize || this._m.bufferSize;
    this._m.sampleRate = options.sampleRate || this._m.audioContext.sampleRate || 44100;
    this._m.callback = options.callback;
    this._m.windowingFunction = options.windowingFunction || 'hanning';
    this._m.featureExtractors = _featureExtractors__WEBPACK_IMPORTED_MODULE_1__;
    this._m.EXTRACTION_STARTED = options.startImmediately || false;
    this._m.channel = typeof options.channel === 'number' ? options.channel : 0;
    this._m.inputs = options.inputs || 1;
    this._m.outputs = options.outputs || 1;
    this._m.numberOfMFCCCoefficients = options.numberOfMFCCCoefficients || this._m.numberOfMFCCCoefficients || 13; //create nodes

    this._m.spn = this._m.audioContext.createScriptProcessor(this._m.bufferSize, this._m.inputs, this._m.outputs);

    this._m.spn.connect(this._m.audioContext.destination);

    this._m._featuresToExtract = options.featureExtractors || []; //always recalculate BS and MFB when a new Meyda analyzer is created.

    this._m.barkScale = _utilities__WEBPACK_IMPORTED_MODULE_0__["createBarkScale"](this._m.bufferSize, this._m.sampleRate, this._m.bufferSize);
    this._m.melFilterBank = _utilities__WEBPACK_IMPORTED_MODULE_0__["createMelFilterBank"](Math.max(this._m.melBands, this._m.numberOfMFCCCoefficients), this._m.sampleRate, this._m.bufferSize);
    this._m.inputData = null;
    this._m.previousInputData = null;
    this._m.frame = null;
    this._m.previousFrame = null;
    this.setSource(options.source);

    this._m.spn.onaudioprocess = function (e) {
      if (_this2._m.inputData !== null) {
        _this2._m.previousInputData = _this2._m.inputData;
      }

      _this2._m.inputData = e.inputBuffer.getChannelData(_this2._m.channel);

      if (!_this2._m.previousInputData) {
        var buffer = _this2._m.inputData;
      } else {
        var buffer = new Float32Array(_this2._m.previousInputData.length + _this2._m.inputData.length - _this2._m.hopSize);
        buffer.set(_this2._m.previousInputData.slice(_this2._m.hopSize));
        buffer.set(_this2._m.inputData, _this2._m.previousInputData.length - _this2._m.hopSize);
      }

      ;
      var frames = _utilities__WEBPACK_IMPORTED_MODULE_0__["frame"](buffer, _this2._m.bufferSize, _this2._m.hopSize);
      frames.forEach(function (f) {
        _this2._m.frame = f;

        var features = _this2._m.extract(_this2._m._featuresToExtract, _this2._m.frame, _this2._m.previousFrame); // call callback if applicable


        if (typeof _this2._m.callback === 'function' && _this2._m.EXTRACTION_STARTED) {
          _this2._m.callback(features);
        }

        _this2._m.previousFrame = _this2._m.frame;
      });
    };
  }
  /**
   * Start feature extraction
   * The audio features will be passed to the callback function that was defined
   * in the MeydaOptions that were passed to the factory when constructing the
   * MeydaAnalyzer.
   * @param {(string|Array.<string>)} [features]
   * Change the features that Meyda is extracting. Defaults to the features that
   * were set upon construction in the options parameter.
   * @example
   * analyzer.start('chroma');
   */


  _createClass(MeydaAnalyzer, [{
    key: "start",
    value: function start(features) {
      this._m._featuresToExtract = features || this._m._featuresToExtract;
      this._m.EXTRACTION_STARTED = true;
    }
    /**
     * Stop feature extraction.
     * @example
     * analyzer.stop();
     */

  }, {
    key: "stop",
    value: function stop() {
      this._m.EXTRACTION_STARTED = false;
    }
    /**
     * Set the Audio Node for Meyda to listen to.
     * @param {AudioNode} source - The Audio Node for Meyda to listen to
     * @example
     * analyzer.setSource(audioSourceNode);
     */

  }, {
    key: "setSource",
    value: function setSource(source) {
      this._m.source && this._m.source.disconnect(this._m.spn);
      this._m.source = source;

      this._m.source.connect(this._m.spn);
    }
    /**
     * Set the channel of the audio node for Meyda to listen to
     * @param {number} channel - the index of the channel on the input audio node
     * for Meyda to listen to.
     * @example
     * analyzer.setChannel(0);
     */

  }, {
    key: "setChannel",
    value: function setChannel(channel) {
      if (channel <= this._m.inputs) {
        this._m.channel = channel;
      } else {
        console.error("Channel ".concat(channel, " does not exist. Make sure you've provided a value for 'inputs' that is greater than ").concat(channel, " when instantiating the MeydaAnalyzer"));
      }
    }
    /**
     * Get a set of features from the current frame.
     * @param {(string|Array.<string>)} [features]
     * Change the features that Meyda is extracting
     * @example
     * analyzer.get('spectralFlatness');
     */

  }, {
    key: "get",
    value: function get(features) {
      if (this._m.inputData) {
        return this._m.extract(features || this._m._featuresToExtract, this._m.inputData, this._m.previousInputData);
      } else {
        return null;
      }
    }
  }]);

  return MeydaAnalyzer;
}();

/***/ }),

/***/ "./src/utilities.js":
/*!**************************!*\
  !*** ./src/utilities.js ***!
  \**************************/
/*! exports provided: isPowerOfTwo, error, pointwiseBufferMult, applyWindow, createBarkScale, typedToArray, arrayToTyped, _normalize, normalize, normalizeToOne, mean, melToFreq, freqToMel, createMelFilterBank, hzToOctaves, normalizeByColumn, createChromaFilterBank, frame */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "isPowerOfTwo", function() { return isPowerOfTwo; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "error", function() { return error; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "pointwiseBufferMult", function() { return pointwiseBufferMult; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "applyWindow", function() { return applyWindow; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "createBarkScale", function() { return createBarkScale; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "typedToArray", function() { return typedToArray; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "arrayToTyped", function() { return arrayToTyped; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "_normalize", function() { return _normalize; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "normalize", function() { return normalize; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "normalizeToOne", function() { return normalizeToOne; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "mean", function() { return mean; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "melToFreq", function() { return melToFreq; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "freqToMel", function() { return freqToMel; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "createMelFilterBank", function() { return createMelFilterBank; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "hzToOctaves", function() { return hzToOctaves; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "normalizeByColumn", function() { return normalizeByColumn; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "createChromaFilterBank", function() { return createChromaFilterBank; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "frame", function() { return frame; });
/* harmony import */ var _windowing__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./windowing */ "./src/windowing.js");
function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _nonIterableSpread(); }

function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance"); }

function _iterableToArray(iter) { if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === "[object Arguments]") return Array.from(iter); }

function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } }


var windows = {};
function isPowerOfTwo(num) {
  while (num % 2 === 0 && num > 1) {
    num /= 2;
  }

  return num === 1;
}
function error(message) {
  throw new Error('Meyda: ' + message);
}
function pointwiseBufferMult(a, b) {
  var c = [];

  for (var i = 0; i < Math.min(a.length, b.length); i++) {
    c[i] = a[i] * b[i];
  }

  return c;
}
function applyWindow(signal, windowname) {
  if (windowname !== 'rect') {
    if (windowname === '' || !windowname) windowname = 'hanning';
    if (!windows[windowname]) windows[windowname] = {};

    if (!windows[windowname][signal.length]) {
      try {
        windows[windowname][signal.length] = _windowing__WEBPACK_IMPORTED_MODULE_0__[windowname](signal.length);
      } catch (e) {
        throw new Error('Invalid windowing function');
      }
    }

    signal = pointwiseBufferMult(signal, windows[windowname][signal.length]);
  }

  return signal;
}
function createBarkScale(length, sampleRate, bufferSize) {
  var barkScale = new Float32Array(length);

  for (var i = 0; i < barkScale.length; i++) {
    barkScale[i] = i * sampleRate / bufferSize;
    barkScale[i] = 13 * Math.atan(barkScale[i] / 1315.8) + 3.5 * Math.atan(Math.pow(barkScale[i] / 7518, 2));
  }

  return barkScale;
}
function typedToArray(t) {
  // utility to convert typed arrays to normal arrays
  return Array.prototype.slice.call(t);
}
function arrayToTyped(t) {
  // utility to convert arrays to typed F32 arrays
  return Float32Array.from(t);
}
function _normalize(num, range) {
  return num / range;
}
function normalize(a, range) {
  return a.map(function (n) {
    return _normalize(n, range);
  });
}
function normalizeToOne(a) {
  var max = Math.max.apply(null, a);
  return a.map(function (n) {
    return n / max;
  });
}
function mean(a) {
  return a.reduce(function (prev, cur) {
    return prev + cur;
  }) / a.length;
}

function _melToFreq(melValue) {
  var freqValue = 700 * (Math.exp(melValue / 1125) - 1);
  return freqValue;
}

function _freqToMel(freqValue) {
  var melValue = 1125 * Math.log(1 + freqValue / 700);
  return melValue;
}

function melToFreq(mV) {
  return _melToFreq(mV);
}
function freqToMel(fV) {
  return _freqToMel(fV);
}
function createMelFilterBank(numFilters, sampleRate, bufferSize) {
  //the +2 is the upper and lower limits
  var melValues = new Float32Array(numFilters + 2);
  var melValuesInFreq = new Float32Array(numFilters + 2); //Generate limits in Hz - from 0 to the nyquist.

  var lowerLimitFreq = 0;
  var upperLimitFreq = sampleRate / 2; //Convert the limits to Mel

  var lowerLimitMel = _freqToMel(lowerLimitFreq);

  var upperLimitMel = _freqToMel(upperLimitFreq); //Find the range


  var range = upperLimitMel - lowerLimitMel; //Find the range as part of the linear interpolation

  var valueToAdd = range / (numFilters + 1);
  var fftBinsOfFreq = Array(numFilters + 2);

  for (var i = 0; i < melValues.length; i++) {
    // Initialising the mel frequencies
    // They're a linear interpolation between the lower and upper limits.
    melValues[i] = i * valueToAdd; // Convert back to Hz

    melValuesInFreq[i] = _melToFreq(melValues[i]); // Find the corresponding bins

    fftBinsOfFreq[i] = Math.floor((bufferSize + 1) * melValuesInFreq[i] / sampleRate);
  }

  var filterBank = Array(numFilters);

  for (var j = 0; j < filterBank.length; j++) {
    // Create a two dimensional array of size numFilters * (buffersize/2)+1
    // pre-populating the arrays with 0s.
    filterBank[j] = Array.apply(null, new Array(bufferSize / 2 + 1)).map(Number.prototype.valueOf, 0); //creating the lower and upper slopes for each bin

    for (var _i = fftBinsOfFreq[j]; _i < fftBinsOfFreq[j + 1]; _i++) {
      filterBank[j][_i] = (_i - fftBinsOfFreq[j]) / (fftBinsOfFreq[j + 1] - fftBinsOfFreq[j]);
    }

    for (var _i2 = fftBinsOfFreq[j + 1]; _i2 < fftBinsOfFreq[j + 2]; _i2++) {
      filterBank[j][_i2] = (fftBinsOfFreq[j + 2] - _i2) / (fftBinsOfFreq[j + 2] - fftBinsOfFreq[j + 1]);
    }
  }

  return filterBank;
}
function hzToOctaves(freq, A440) {
  return Math.log2(16 * freq / A440);
}
function normalizeByColumn(a) {
  var emptyRow = a[0].map(function () {
    return 0;
  });
  var colDenominators = a.reduce(function (acc, row) {
    row.forEach(function (cell, j) {
      acc[j] += Math.pow(cell, 2);
    });
    return acc;
  }, emptyRow).map(Math.sqrt);
  return a.map(function (row, i) {
    return row.map(function (v, j) {
      return v / (colDenominators[j] || 1);
    });
  });
}
;
function createChromaFilterBank(numFilters, sampleRate, bufferSize) {
  var centerOctave = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 5;
  var octaveWidth = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 2;
  var baseC = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : true;
  var A440 = arguments.length > 6 && arguments[6] !== undefined ? arguments[6] : 440;
  var numOutputBins = Math.floor(bufferSize / 2) + 1;
  var frequencyBins = new Array(bufferSize).fill(0).map(function (_, i) {
    return numFilters * hzToOctaves(sampleRate * i / bufferSize, A440);
  }); // Set a value for the 0 Hz bin that is 1.5 octaves below bin 1
  // (so chroma is 50% rotated from bin 1, and bin width is broad)

  frequencyBins[0] = frequencyBins[1] - 1.5 * numFilters;
  var binWidthBins = frequencyBins.slice(1).map(function (v, i) {
    return Math.max(v - frequencyBins[i]);
  }, 1).concat([1]);
  var halfNumFilters = Math.round(numFilters / 2);
  var filterPeaks = new Array(numFilters).fill(0).map(function (_, i) {
    return frequencyBins.map(function (frq) {
      return (10 * numFilters + halfNumFilters + frq - i) % numFilters - halfNumFilters;
    });
  });
  var weights = filterPeaks.map(function (row, i) {
    return row.map(function (_, j) {
      return Math.exp(-0.5 * Math.pow(2 * filterPeaks[i][j] / binWidthBins[j], 2));
    });
  });
  weights = normalizeByColumn(weights);

  if (octaveWidth) {
    var octaveWeights = frequencyBins.map(function (v) {
      return Math.exp(-0.5 * Math.pow((v / numFilters - centerOctave) / octaveWidth, 2));
    });
    weights = weights.map(function (row) {
      return row.map(function (cell, j) {
        return cell * octaveWeights[j];
      });
    });
  }

  if (baseC) {
    weights = [].concat(_toConsumableArray(weights.slice(3)), _toConsumableArray(weights.slice(0, 3)));
  }

  return weights.map(function (row) {
    return row.slice(0, numOutputBins);
  });
}
function frame(buffer, frameLength, hopLength) {
  if (buffer.length < frameLength) {
    throw new Error('Buffer is too short for frame length');
  }

  if (hopLength < 1) {
    throw new Error('Hop length cannot be less that 1');
  }

  if (frameLength < 1) {
    throw new Error('Frame length cannot be less that 1');
  }

  var numFrames = 1 + Math.floor((buffer.length - frameLength) / hopLength);
  return new Array(numFrames).fill(0).map(function (_, i) {
    return buffer.slice(i * hopLength, i * hopLength + frameLength);
  });
}

/***/ }),

/***/ "./src/windowing.js":
/*!**************************!*\
  !*** ./src/windowing.js ***!
  \**************************/
/*! exports provided: blackman, sine, hanning, hamming */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "blackman", function() { return blackman; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "sine", function() { return sine; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "hanning", function() { return hanning; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "hamming", function() { return hamming; });
function blackman(size) {
  var blackmanBuffer = new Float32Array(size);
  var coeff1 = 2 * Math.PI / (size - 1);
  var coeff2 = 2 * coeff1; //According to http://uk.mathworks.com/help/signal/ref/blackman.html
  //first half of the window

  for (var i = 0; i < size / 2; i++) {
    blackmanBuffer[i] = 0.42 - 0.5 * Math.cos(i * coeff1) + 0.08 * Math.cos(i * coeff2);
  } //second half of the window


  for (var _i = size / 2; _i > 0; _i--) {
    blackmanBuffer[size - _i] = blackmanBuffer[_i - 1];
  }

  return blackmanBuffer;
}
function sine(size) {
  var coeff = Math.PI / (size - 1);
  var sineBuffer = new Float32Array(size);

  for (var i = 0; i < size; i++) {
    sineBuffer[i] = Math.sin(coeff * i);
  }

  return sineBuffer;
}
function hanning(size) {
  var hanningBuffer = new Float32Array(size);

  for (var i = 0; i < size; i++) {
    // According to the R documentation
    // http://ugrad.stat.ubc.ca/R/library/e1071/html/hanning.window.html
    hanningBuffer[i] = 0.5 - 0.5 * Math.cos(2 * Math.PI * i / (size - 1));
  }

  return hanningBuffer;
}
function hamming(size) {
  var hammingBuffer = new Float32Array(size);

  for (var i = 0; i < size; i++) {
    //According to http://uk.mathworks.com/help/signal/ref/hamming.html
    hammingBuffer[i] = 0.54 - 0.46 * Math.cos(2 * Math.PI * (i / size - 1));
  }

  return hammingBuffer;
}

/***/ })

/******/ });
});

},{}],111:[function(require,module,exports){
assert.notEqual = notEqual
assert.notOk = notOk
assert.equal = equal
assert.ok = assert

module.exports = assert

function equal (a, b, m) {
  assert(a == b, m) // eslint-disable-line eqeqeq
}

function notEqual (a, b, m) {
  assert(a != b, m) // eslint-disable-line eqeqeq
}

function notOk (t, m) {
  assert(!t, m)
}

function assert (t, m) {
  if (!t) throw new Error(m || 'AssertionError')
}

},{}],112:[function(require,module,exports){
var splice = require('remove-array-items')
var nanotiming = require('nanotiming')
var assert = require('assert')

module.exports = Nanobus

function Nanobus (name) {
  if (!(this instanceof Nanobus)) return new Nanobus(name)

  this._name = name || 'nanobus'
  this._starListeners = []
  this._listeners = {}
}

Nanobus.prototype.emit = function (eventName) {
  assert.ok(typeof eventName === 'string' || typeof eventName === 'symbol', 'nanobus.emit: eventName should be type string or symbol')

  var data = []
  for (var i = 1, len = arguments.length; i < len; i++) {
    data.push(arguments[i])
  }

  var emitTiming = nanotiming(this._name + "('" + eventName.toString() + "')")
  var listeners = this._listeners[eventName]
  if (listeners && listeners.length > 0) {
    this._emit(this._listeners[eventName], data)
  }

  if (this._starListeners.length > 0) {
    this._emit(this._starListeners, eventName, data, emitTiming.uuid)
  }
  emitTiming()

  return this
}

Nanobus.prototype.on = Nanobus.prototype.addListener = function (eventName, listener) {
  assert.ok(typeof eventName === 'string' || typeof eventName === 'symbol', 'nanobus.on: eventName should be type string or symbol')
  assert.equal(typeof listener, 'function', 'nanobus.on: listener should be type function')

  if (eventName === '*') {
    this._starListeners.push(listener)
  } else {
    if (!this._listeners[eventName]) this._listeners[eventName] = []
    this._listeners[eventName].push(listener)
  }
  return this
}

Nanobus.prototype.prependListener = function (eventName, listener) {
  assert.ok(typeof eventName === 'string' || typeof eventName === 'symbol', 'nanobus.prependListener: eventName should be type string or symbol')
  assert.equal(typeof listener, 'function', 'nanobus.prependListener: listener should be type function')

  if (eventName === '*') {
    this._starListeners.unshift(listener)
  } else {
    if (!this._listeners[eventName]) this._listeners[eventName] = []
    this._listeners[eventName].unshift(listener)
  }
  return this
}

Nanobus.prototype.once = function (eventName, listener) {
  assert.ok(typeof eventName === 'string' || typeof eventName === 'symbol', 'nanobus.once: eventName should be type string or symbol')
  assert.equal(typeof listener, 'function', 'nanobus.once: listener should be type function')

  var self = this
  this.on(eventName, once)
  function once () {
    listener.apply(self, arguments)
    self.removeListener(eventName, once)
  }
  return this
}

Nanobus.prototype.prependOnceListener = function (eventName, listener) {
  assert.ok(typeof eventName === 'string' || typeof eventName === 'symbol', 'nanobus.prependOnceListener: eventName should be type string or symbol')
  assert.equal(typeof listener, 'function', 'nanobus.prependOnceListener: listener should be type function')

  var self = this
  this.prependListener(eventName, once)
  function once () {
    listener.apply(self, arguments)
    self.removeListener(eventName, once)
  }
  return this
}

Nanobus.prototype.removeListener = function (eventName, listener) {
  assert.ok(typeof eventName === 'string' || typeof eventName === 'symbol', 'nanobus.removeListener: eventName should be type string or symbol')
  assert.equal(typeof listener, 'function', 'nanobus.removeListener: listener should be type function')

  if (eventName === '*') {
    this._starListeners = this._starListeners.slice()
    return remove(this._starListeners, listener)
  } else {
    if (typeof this._listeners[eventName] !== 'undefined') {
      this._listeners[eventName] = this._listeners[eventName].slice()
    }

    return remove(this._listeners[eventName], listener)
  }

  function remove (arr, listener) {
    if (!arr) return
    var index = arr.indexOf(listener)
    if (index !== -1) {
      splice(arr, index, 1)
      return true
    }
  }
}

Nanobus.prototype.removeAllListeners = function (eventName) {
  if (eventName) {
    if (eventName === '*') {
      this._starListeners = []
    } else {
      this._listeners[eventName] = []
    }
  } else {
    this._starListeners = []
    this._listeners = {}
  }
  return this
}

Nanobus.prototype.listeners = function (eventName) {
  var listeners = eventName !== '*'
    ? this._listeners[eventName]
    : this._starListeners

  var ret = []
  if (listeners) {
    var ilength = listeners.length
    for (var i = 0; i < ilength; i++) ret.push(listeners[i])
  }
  return ret
}

Nanobus.prototype._emit = function (arr, eventName, data, uuid) {
  if (typeof arr === 'undefined') return
  if (arr.length === 0) return
  if (data === undefined) {
    data = eventName
    eventName = null
  }

  if (eventName) {
    if (uuid !== undefined) {
      data = [eventName].concat(data, uuid)
    } else {
      data = [eventName].concat(data)
    }
  }

  var length = arr.length
  for (var i = 0; i < length; i++) {
    var listener = arr[i]
    listener.apply(listener, data)
  }
}

},{"assert":111,"nanotiming":115,"remove-array-items":131}],113:[function(require,module,exports){
// This file replaces `format.js` in bundlers like webpack or Rollup,
// according to `browser` config in `package.json`.

module.exports = function (random, alphabet, size) {
  // We can’t use bytes bigger than the alphabet. To make bytes values closer
  // to the alphabet, we apply bitmask on them. We look for the closest
  // `2 ** x - 1` number, which will be bigger than alphabet size. If we have
  // 30 symbols in the alphabet, we will take 31 (00011111).
  // We do not use faster Math.clz32, because it is not available in browsers.
  var mask = (2 << Math.log(alphabet.length - 1) / Math.LN2) - 1
  // Bitmask is not a perfect solution (in our example it will pass 31 bytes,
  // which is bigger than the alphabet). As a result, we will need more bytes,
  // than ID size, because we will refuse bytes bigger than the alphabet.

  // Every hardware random generator call is costly,
  // because we need to wait for entropy collection. This is why often it will
  // be faster to ask for few extra bytes in advance, to avoid additional calls.

  // Here we calculate how many random bytes should we call in advance.
  // It depends on ID length, mask / alphabet size and magic number 1.6
  // (which was selected according benchmarks).

  // -~f => Math.ceil(f) if n is float number
  // -~i => i + 1 if n is integer number
  var step = -~(1.6 * mask * size / alphabet.length)
  var id = ''

  while (true) {
    var bytes = random(step)
    // Compact alternative for `for (var i = 0; i < step; i++)`
    var i = step
    while (i--) {
      // If random byte is bigger than alphabet even after bitmask,
      // we refuse it by `|| ''`.
      id += alphabet[bytes[i] & mask] || ''
      // More compact than `id.length + 1 === size`
      if (id.length === +size) return id
    }
  }
}

},{}],114:[function(require,module,exports){
var assert = require('assert')

var hasWindow = typeof window !== 'undefined'

function createScheduler () {
  var scheduler
  if (hasWindow) {
    if (!window._nanoScheduler) window._nanoScheduler = new NanoScheduler(true)
    scheduler = window._nanoScheduler
  } else {
    scheduler = new NanoScheduler()
  }
  return scheduler
}

function NanoScheduler (hasWindow) {
  this.hasWindow = hasWindow
  this.hasIdle = this.hasWindow && window.requestIdleCallback
  this.method = this.hasIdle ? window.requestIdleCallback.bind(window) : this.setTimeout
  this.scheduled = false
  this.queue = []
}

NanoScheduler.prototype.push = function (cb) {
  assert.equal(typeof cb, 'function', 'nanoscheduler.push: cb should be type function')

  this.queue.push(cb)
  this.schedule()
}

NanoScheduler.prototype.schedule = function () {
  if (this.scheduled) return

  this.scheduled = true
  var self = this
  this.method(function (idleDeadline) {
    var cb
    while (self.queue.length && idleDeadline.timeRemaining() > 0) {
      cb = self.queue.shift()
      cb(idleDeadline)
    }
    self.scheduled = false
    if (self.queue.length) self.schedule()
  })
}

NanoScheduler.prototype.setTimeout = function (cb) {
  setTimeout(cb, 0, {
    timeRemaining: function () {
      return 1
    }
  })
}

module.exports = createScheduler

},{"assert":111}],115:[function(require,module,exports){
var scheduler = require('nanoscheduler')()
var assert = require('assert')

var perf
nanotiming.disabled = true
try {
  perf = window.performance
  nanotiming.disabled = window.localStorage.DISABLE_NANOTIMING === 'true' || !perf.mark
} catch (e) { }

module.exports = nanotiming

function nanotiming (name) {
  assert.equal(typeof name, 'string', 'nanotiming: name should be type string')

  if (nanotiming.disabled) return noop

  var uuid = (perf.now() * 10000).toFixed() % Number.MAX_SAFE_INTEGER
  var startName = 'start-' + uuid + '-' + name
  perf.mark(startName)

  function end (cb) {
    var endName = 'end-' + uuid + '-' + name
    perf.mark(endName)

    scheduler.push(function () {
      var err = null
      try {
        var measureName = name + ' [' + uuid + ']'
        perf.measure(measureName, startName, endName)
        perf.clearMarks(startName)
        perf.clearMarks(endName)
      } catch (e) { err = e }
      if (cb) cb(err, name)
    })
  }

  end.uuid = uuid
  return end
}

function noop (cb) {
  if (cb) {
    scheduler.push(function () {
      cb(new Error('nanotiming: performance API unavailable'))
    })
  }
}

},{"assert":111,"nanoscheduler":114}],116:[function(require,module,exports){
var hasMap = typeof Map === 'function' && Map.prototype;
var mapSizeDescriptor = Object.getOwnPropertyDescriptor && hasMap ? Object.getOwnPropertyDescriptor(Map.prototype, 'size') : null;
var mapSize = hasMap && mapSizeDescriptor && typeof mapSizeDescriptor.get === 'function' ? mapSizeDescriptor.get : null;
var mapForEach = hasMap && Map.prototype.forEach;
var hasSet = typeof Set === 'function' && Set.prototype;
var setSizeDescriptor = Object.getOwnPropertyDescriptor && hasSet ? Object.getOwnPropertyDescriptor(Set.prototype, 'size') : null;
var setSize = hasSet && setSizeDescriptor && typeof setSizeDescriptor.get === 'function' ? setSizeDescriptor.get : null;
var setForEach = hasSet && Set.prototype.forEach;
var hasWeakMap = typeof WeakMap === 'function' && WeakMap.prototype;
var weakMapHas = hasWeakMap ? WeakMap.prototype.has : null;
var hasWeakSet = typeof WeakSet === 'function' && WeakSet.prototype;
var weakSetHas = hasWeakSet ? WeakSet.prototype.has : null;
var hasWeakRef = typeof WeakRef === 'function' && WeakRef.prototype;
var weakRefDeref = hasWeakRef ? WeakRef.prototype.deref : null;
var booleanValueOf = Boolean.prototype.valueOf;
var objectToString = Object.prototype.toString;
var functionToString = Function.prototype.toString;
var $match = String.prototype.match;
var $slice = String.prototype.slice;
var $replace = String.prototype.replace;
var $toUpperCase = String.prototype.toUpperCase;
var $toLowerCase = String.prototype.toLowerCase;
var $test = RegExp.prototype.test;
var $concat = Array.prototype.concat;
var $join = Array.prototype.join;
var $arrSlice = Array.prototype.slice;
var $floor = Math.floor;
var bigIntValueOf = typeof BigInt === 'function' ? BigInt.prototype.valueOf : null;
var gOPS = Object.getOwnPropertySymbols;
var symToString = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ? Symbol.prototype.toString : null;
var hasShammedSymbols = typeof Symbol === 'function' && typeof Symbol.iterator === 'object';
// ie, `has-tostringtag/shams
var toStringTag = typeof Symbol === 'function' && Symbol.toStringTag && (typeof Symbol.toStringTag === hasShammedSymbols ? 'object' : 'symbol')
    ? Symbol.toStringTag
    : null;
var isEnumerable = Object.prototype.propertyIsEnumerable;

var gPO = (typeof Reflect === 'function' ? Reflect.getPrototypeOf : Object.getPrototypeOf) || (
    [].__proto__ === Array.prototype // eslint-disable-line no-proto
        ? function (O) {
            return O.__proto__; // eslint-disable-line no-proto
        }
        : null
);

function addNumericSeparator(num, str) {
    if (
        num === Infinity
        || num === -Infinity
        || num !== num
        || (num && num > -1000 && num < 1000)
        || $test.call(/e/, str)
    ) {
        return str;
    }
    var sepRegex = /[0-9](?=(?:[0-9]{3})+(?![0-9]))/g;
    if (typeof num === 'number') {
        var int = num < 0 ? -$floor(-num) : $floor(num); // trunc(num)
        if (int !== num) {
            var intStr = String(int);
            var dec = $slice.call(str, intStr.length + 1);
            return $replace.call(intStr, sepRegex, '$&_') + '.' + $replace.call($replace.call(dec, /([0-9]{3})/g, '$&_'), /_$/, '');
        }
    }
    return $replace.call(str, sepRegex, '$&_');
}

var inspectCustom = require('./util.inspect').custom;
var inspectSymbol = inspectCustom && isSymbol(inspectCustom) ? inspectCustom : null;

module.exports = function inspect_(obj, options, depth, seen) {
    var opts = options || {};

    if (has(opts, 'quoteStyle') && (opts.quoteStyle !== 'single' && opts.quoteStyle !== 'double')) {
        throw new TypeError('option "quoteStyle" must be "single" or "double"');
    }
    if (
        has(opts, 'maxStringLength') && (typeof opts.maxStringLength === 'number'
            ? opts.maxStringLength < 0 && opts.maxStringLength !== Infinity
            : opts.maxStringLength !== null
        )
    ) {
        throw new TypeError('option "maxStringLength", if provided, must be a positive integer, Infinity, or `null`');
    }
    var customInspect = has(opts, 'customInspect') ? opts.customInspect : true;
    if (typeof customInspect !== 'boolean' && customInspect !== 'symbol') {
        throw new TypeError('option "customInspect", if provided, must be `true`, `false`, or `\'symbol\'`');
    }

    if (
        has(opts, 'indent')
        && opts.indent !== null
        && opts.indent !== '\t'
        && !(parseInt(opts.indent, 10) === opts.indent && opts.indent > 0)
    ) {
        throw new TypeError('option "indent" must be "\\t", an integer > 0, or `null`');
    }
    if (has(opts, 'numericSeparator') && typeof opts.numericSeparator !== 'boolean') {
        throw new TypeError('option "numericSeparator", if provided, must be `true` or `false`');
    }
    var numericSeparator = opts.numericSeparator;

    if (typeof obj === 'undefined') {
        return 'undefined';
    }
    if (obj === null) {
        return 'null';
    }
    if (typeof obj === 'boolean') {
        return obj ? 'true' : 'false';
    }

    if (typeof obj === 'string') {
        return inspectString(obj, opts);
    }
    if (typeof obj === 'number') {
        if (obj === 0) {
            return Infinity / obj > 0 ? '0' : '-0';
        }
        var str = String(obj);
        return numericSeparator ? addNumericSeparator(obj, str) : str;
    }
    if (typeof obj === 'bigint') {
        var bigIntStr = String(obj) + 'n';
        return numericSeparator ? addNumericSeparator(obj, bigIntStr) : bigIntStr;
    }

    var maxDepth = typeof opts.depth === 'undefined' ? 5 : opts.depth;
    if (typeof depth === 'undefined') { depth = 0; }
    if (depth >= maxDepth && maxDepth > 0 && typeof obj === 'object') {
        return isArray(obj) ? '[Array]' : '[Object]';
    }

    var indent = getIndent(opts, depth);

    if (typeof seen === 'undefined') {
        seen = [];
    } else if (indexOf(seen, obj) >= 0) {
        return '[Circular]';
    }

    function inspect(value, from, noIndent) {
        if (from) {
            seen = $arrSlice.call(seen);
            seen.push(from);
        }
        if (noIndent) {
            var newOpts = {
                depth: opts.depth
            };
            if (has(opts, 'quoteStyle')) {
                newOpts.quoteStyle = opts.quoteStyle;
            }
            return inspect_(value, newOpts, depth + 1, seen);
        }
        return inspect_(value, opts, depth + 1, seen);
    }

    if (typeof obj === 'function') {
        var name = nameOf(obj);
        var keys = arrObjKeys(obj, inspect);
        return '[Function' + (name ? ': ' + name : ' (anonymous)') + ']' + (keys.length > 0 ? ' { ' + $join.call(keys, ', ') + ' }' : '');
    }
    if (isSymbol(obj)) {
        var symString = hasShammedSymbols ? $replace.call(String(obj), /^(Symbol\(.*\))_[^)]*$/, '$1') : symToString.call(obj);
        return typeof obj === 'object' && !hasShammedSymbols ? markBoxed(symString) : symString;
    }
    if (isElement(obj)) {
        var s = '<' + $toLowerCase.call(String(obj.nodeName));
        var attrs = obj.attributes || [];
        for (var i = 0; i < attrs.length; i++) {
            s += ' ' + attrs[i].name + '=' + wrapQuotes(quote(attrs[i].value), 'double', opts);
        }
        s += '>';
        if (obj.childNodes && obj.childNodes.length) { s += '...'; }
        s += '</' + $toLowerCase.call(String(obj.nodeName)) + '>';
        return s;
    }
    if (isArray(obj)) {
        if (obj.length === 0) { return '[]'; }
        var xs = arrObjKeys(obj, inspect);
        if (indent && !singleLineValues(xs)) {
            return '[' + indentedJoin(xs, indent) + ']';
        }
        return '[ ' + $join.call(xs, ', ') + ' ]';
    }
    if (isError(obj)) {
        var parts = arrObjKeys(obj, inspect);
        if ('cause' in obj && !isEnumerable.call(obj, 'cause')) {
            return '{ [' + String(obj) + '] ' + $join.call($concat.call('[cause]: ' + inspect(obj.cause), parts), ', ') + ' }';
        }
        if (parts.length === 0) { return '[' + String(obj) + ']'; }
        return '{ [' + String(obj) + '] ' + $join.call(parts, ', ') + ' }';
    }
    if (typeof obj === 'object' && customInspect) {
        if (inspectSymbol && typeof obj[inspectSymbol] === 'function') {
            return obj[inspectSymbol]();
        } else if (customInspect !== 'symbol' && typeof obj.inspect === 'function') {
            return obj.inspect();
        }
    }
    if (isMap(obj)) {
        var mapParts = [];
        mapForEach.call(obj, function (value, key) {
            mapParts.push(inspect(key, obj, true) + ' => ' + inspect(value, obj));
        });
        return collectionOf('Map', mapSize.call(obj), mapParts, indent);
    }
    if (isSet(obj)) {
        var setParts = [];
        setForEach.call(obj, function (value) {
            setParts.push(inspect(value, obj));
        });
        return collectionOf('Set', setSize.call(obj), setParts, indent);
    }
    if (isWeakMap(obj)) {
        return weakCollectionOf('WeakMap');
    }
    if (isWeakSet(obj)) {
        return weakCollectionOf('WeakSet');
    }
    if (isWeakRef(obj)) {
        return weakCollectionOf('WeakRef');
    }
    if (isNumber(obj)) {
        return markBoxed(inspect(Number(obj)));
    }
    if (isBigInt(obj)) {
        return markBoxed(inspect(bigIntValueOf.call(obj)));
    }
    if (isBoolean(obj)) {
        return markBoxed(booleanValueOf.call(obj));
    }
    if (isString(obj)) {
        return markBoxed(inspect(String(obj)));
    }
    if (!isDate(obj) && !isRegExp(obj)) {
        var ys = arrObjKeys(obj, inspect);
        var isPlainObject = gPO ? gPO(obj) === Object.prototype : obj instanceof Object || obj.constructor === Object;
        var protoTag = obj instanceof Object ? '' : 'null prototype';
        var stringTag = !isPlainObject && toStringTag && Object(obj) === obj && toStringTag in obj ? $slice.call(toStr(obj), 8, -1) : protoTag ? 'Object' : '';
        var constructorTag = isPlainObject || typeof obj.constructor !== 'function' ? '' : obj.constructor.name ? obj.constructor.name + ' ' : '';
        var tag = constructorTag + (stringTag || protoTag ? '[' + $join.call($concat.call([], stringTag || [], protoTag || []), ': ') + '] ' : '');
        if (ys.length === 0) { return tag + '{}'; }
        if (indent) {
            return tag + '{' + indentedJoin(ys, indent) + '}';
        }
        return tag + '{ ' + $join.call(ys, ', ') + ' }';
    }
    return String(obj);
};

function wrapQuotes(s, defaultStyle, opts) {
    var quoteChar = (opts.quoteStyle || defaultStyle) === 'double' ? '"' : "'";
    return quoteChar + s + quoteChar;
}

function quote(s) {
    return $replace.call(String(s), /"/g, '&quot;');
}

function isArray(obj) { return toStr(obj) === '[object Array]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }
function isDate(obj) { return toStr(obj) === '[object Date]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }
function isRegExp(obj) { return toStr(obj) === '[object RegExp]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }
function isError(obj) { return toStr(obj) === '[object Error]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }
function isString(obj) { return toStr(obj) === '[object String]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }
function isNumber(obj) { return toStr(obj) === '[object Number]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }
function isBoolean(obj) { return toStr(obj) === '[object Boolean]' && (!toStringTag || !(typeof obj === 'object' && toStringTag in obj)); }

// Symbol and BigInt do have Symbol.toStringTag by spec, so that can't be used to eliminate false positives
function isSymbol(obj) {
    if (hasShammedSymbols) {
        return obj && typeof obj === 'object' && obj instanceof Symbol;
    }
    if (typeof obj === 'symbol') {
        return true;
    }
    if (!obj || typeof obj !== 'object' || !symToString) {
        return false;
    }
    try {
        symToString.call(obj);
        return true;
    } catch (e) {}
    return false;
}

function isBigInt(obj) {
    if (!obj || typeof obj !== 'object' || !bigIntValueOf) {
        return false;
    }
    try {
        bigIntValueOf.call(obj);
        return true;
    } catch (e) {}
    return false;
}

var hasOwn = Object.prototype.hasOwnProperty || function (key) { return key in this; };
function has(obj, key) {
    return hasOwn.call(obj, key);
}

function toStr(obj) {
    return objectToString.call(obj);
}

function nameOf(f) {
    if (f.name) { return f.name; }
    var m = $match.call(functionToString.call(f), /^function\s*([\w$]+)/);
    if (m) { return m[1]; }
    return null;
}

function indexOf(xs, x) {
    if (xs.indexOf) { return xs.indexOf(x); }
    for (var i = 0, l = xs.length; i < l; i++) {
        if (xs[i] === x) { return i; }
    }
    return -1;
}

function isMap(x) {
    if (!mapSize || !x || typeof x !== 'object') {
        return false;
    }
    try {
        mapSize.call(x);
        try {
            setSize.call(x);
        } catch (s) {
            return true;
        }
        return x instanceof Map; // core-js workaround, pre-v2.5.0
    } catch (e) {}
    return false;
}

function isWeakMap(x) {
    if (!weakMapHas || !x || typeof x !== 'object') {
        return false;
    }
    try {
        weakMapHas.call(x, weakMapHas);
        try {
            weakSetHas.call(x, weakSetHas);
        } catch (s) {
            return true;
        }
        return x instanceof WeakMap; // core-js workaround, pre-v2.5.0
    } catch (e) {}
    return false;
}

function isWeakRef(x) {
    if (!weakRefDeref || !x || typeof x !== 'object') {
        return false;
    }
    try {
        weakRefDeref.call(x);
        return true;
    } catch (e) {}
    return false;
}

function isSet(x) {
    if (!setSize || !x || typeof x !== 'object') {
        return false;
    }
    try {
        setSize.call(x);
        try {
            mapSize.call(x);
        } catch (m) {
            return true;
        }
        return x instanceof Set; // core-js workaround, pre-v2.5.0
    } catch (e) {}
    return false;
}

function isWeakSet(x) {
    if (!weakSetHas || !x || typeof x !== 'object') {
        return false;
    }
    try {
        weakSetHas.call(x, weakSetHas);
        try {
            weakMapHas.call(x, weakMapHas);
        } catch (s) {
            return true;
        }
        return x instanceof WeakSet; // core-js workaround, pre-v2.5.0
    } catch (e) {}
    return false;
}

function isElement(x) {
    if (!x || typeof x !== 'object') { return false; }
    if (typeof HTMLElement !== 'undefined' && x instanceof HTMLElement) {
        return true;
    }
    return typeof x.nodeName === 'string' && typeof x.getAttribute === 'function';
}

function inspectString(str, opts) {
    if (str.length > opts.maxStringLength) {
        var remaining = str.length - opts.maxStringLength;
        var trailer = '... ' + remaining + ' more character' + (remaining > 1 ? 's' : '');
        return inspectString($slice.call(str, 0, opts.maxStringLength), opts) + trailer;
    }
    // eslint-disable-next-line no-control-regex
    var s = $replace.call($replace.call(str, /(['\\])/g, '\\$1'), /[\x00-\x1f]/g, lowbyte);
    return wrapQuotes(s, 'single', opts);
}

function lowbyte(c) {
    var n = c.charCodeAt(0);
    var x = {
        8: 'b',
        9: 't',
        10: 'n',
        12: 'f',
        13: 'r'
    }[n];
    if (x) { return '\\' + x; }
    return '\\x' + (n < 0x10 ? '0' : '') + $toUpperCase.call(n.toString(16));
}

function markBoxed(str) {
    return 'Object(' + str + ')';
}

function weakCollectionOf(type) {
    return type + ' { ? }';
}

function collectionOf(type, size, entries, indent) {
    var joinedEntries = indent ? indentedJoin(entries, indent) : $join.call(entries, ', ');
    return type + ' (' + size + ') {' + joinedEntries + '}';
}

function singleLineValues(xs) {
    for (var i = 0; i < xs.length; i++) {
        if (indexOf(xs[i], '\n') >= 0) {
            return false;
        }
    }
    return true;
}

function getIndent(opts, depth) {
    var baseIndent;
    if (opts.indent === '\t') {
        baseIndent = '\t';
    } else if (typeof opts.indent === 'number' && opts.indent > 0) {
        baseIndent = $join.call(Array(opts.indent + 1), ' ');
    } else {
        return null;
    }
    return {
        base: baseIndent,
        prev: $join.call(Array(depth + 1), baseIndent)
    };
}

function indentedJoin(xs, indent) {
    if (xs.length === 0) { return ''; }
    var lineJoiner = '\n' + indent.prev + indent.base;
    return lineJoiner + $join.call(xs, ',' + lineJoiner) + '\n' + indent.prev;
}

function arrObjKeys(obj, inspect) {
    var isArr = isArray(obj);
    var xs = [];
    if (isArr) {
        xs.length = obj.length;
        for (var i = 0; i < obj.length; i++) {
            xs[i] = has(obj, i) ? inspect(obj[i], obj) : '';
        }
    }
    var syms = typeof gOPS === 'function' ? gOPS(obj) : [];
    var symMap;
    if (hasShammedSymbols) {
        symMap = {};
        for (var k = 0; k < syms.length; k++) {
            symMap['$' + syms[k]] = syms[k];
        }
    }

    for (var key in obj) { // eslint-disable-line no-restricted-syntax
        if (!has(obj, key)) { continue; } // eslint-disable-line no-restricted-syntax, no-continue
        if (isArr && String(Number(key)) === key && key < obj.length) { continue; } // eslint-disable-line no-restricted-syntax, no-continue
        if (hasShammedSymbols && symMap['$' + key] instanceof Symbol) {
            // this is to prevent shammed Symbols, which are stored as strings, from being included in the string key section
            continue; // eslint-disable-line no-restricted-syntax, no-continue
        } else if ($test.call(/[^\w$]/, key)) {
            xs.push(inspect(key, obj) + ': ' + inspect(obj[key], obj));
        } else {
            xs.push(key + ': ' + inspect(obj[key], obj));
        }
    }
    if (typeof gOPS === 'function') {
        for (var j = 0; j < syms.length; j++) {
            if (isEnumerable.call(obj, syms[j])) {
                xs.push('[' + inspect(syms[j]) + ']: ' + inspect(obj[syms[j]], obj));
            }
        }
    }
    return xs;
}

},{"./util.inspect":43}],117:[function(require,module,exports){
/**
 * Compiles a querystring
 * Returns string representation of the object
 *
 * @param {Object}
 * @api private
 */

exports.encode = function (obj) {
  var str = '';

  for (var i in obj) {
    if (obj.hasOwnProperty(i)) {
      if (str.length) str += '&';
      str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);
    }
  }

  return str;
};

/**
 * Parses a simple querystring into an object
 *
 * @param {String} qs
 * @api private
 */

exports.decode = function(qs){
  var qry = {};
  var pairs = qs.split('&');
  for (var i = 0, l = pairs.length; i < l; i++) {
    var pair = pairs[i].split('=');
    qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);
  }
  return qry;
};

},{}],118:[function(require,module,exports){
/**
 * Parses an URI
 *
 * @author Steven Levithan <stevenlevithan.com> (MIT license)
 * @api private
 */

var re = /^(?:(?![^:@]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;

var parts = [
    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'
];

module.exports = function parseuri(str) {
    var src = str,
        b = str.indexOf('['),
        e = str.indexOf(']');

    if (b != -1 && e != -1) {
        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);
    }

    var m = re.exec(str || ''),
        uri = {},
        i = 14;

    while (i--) {
        uri[parts[i]] = m[i] || '';
    }

    if (b != -1 && e != -1) {
        uri.source = src;
        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');
        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');
        uri.ipv6uri = true;
    }

    uri.pathNames = pathNames(uri, uri['path']);
    uri.queryKey = queryKey(uri, uri['query']);

    return uri;
};

function pathNames(obj, path) {
    var regx = /\/{2,9}/g,
        names = path.replace(regx, "/").split("/");

    if (path.substr(0, 1) == '/' || path.length === 0) {
        names.splice(0, 1);
    }
    if (path.substr(path.length - 1, 1) == '/') {
        names.splice(names.length - 1, 1);
    }

    return names;
}

function queryKey(uri, query) {
    var data = {};

    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {
        if ($1) {
            data[$1] = $2;
        }
    });

    return data;
}

},{}],119:[function(require,module,exports){
(function (process){(function (){
// Generated by CoffeeScript 1.12.2
(function() {
  var getNanoSeconds, hrtime, loadTime, moduleLoadTime, nodeLoadTime, upTime;

  if ((typeof performance !== "undefined" && performance !== null) && performance.now) {
    module.exports = function() {
      return performance.now();
    };
  } else if ((typeof process !== "undefined" && process !== null) && process.hrtime) {
    module.exports = function() {
      return (getNanoSeconds() - nodeLoadTime) / 1e6;
    };
    hrtime = process.hrtime;
    getNanoSeconds = function() {
      var hr;
      hr = hrtime();
      return hr[0] * 1e9 + hr[1];
    };
    moduleLoadTime = getNanoSeconds();
    upTime = process.uptime() * 1e9;
    nodeLoadTime = moduleLoadTime - upTime;
  } else if (Date.now) {
    module.exports = function() {
      return Date.now() - loadTime;
    };
    loadTime = Date.now();
  } else {
    module.exports = function() {
      return new Date().getTime() - loadTime;
    };
    loadTime = new Date().getTime();
  }

}).call(this);



}).call(this)}).call(this,require('_process'))
},{"_process":120}],120:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};

// cached from whatever global is present so that test runners that stub it
// don't break things.  But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals.  It's inside a
// function because try/catches deoptimize in certain engines.

var cachedSetTimeout;
var cachedClearTimeout;

function defaultSetTimout() {
    throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
    throw new Error('clearTimeout has not been defined');
}
(function () {
    try {
        if (typeof setTimeout === 'function') {
            cachedSetTimeout = setTimeout;
        } else {
            cachedSetTimeout = defaultSetTimout;
        }
    } catch (e) {
        cachedSetTimeout = defaultSetTimout;
    }
    try {
        if (typeof clearTimeout === 'function') {
            cachedClearTimeout = clearTimeout;
        } else {
            cachedClearTimeout = defaultClearTimeout;
        }
    } catch (e) {
        cachedClearTimeout = defaultClearTimeout;
    }
} ())
function runTimeout(fun) {
    if (cachedSetTimeout === setTimeout) {
        //normal enviroments in sane situations
        return setTimeout(fun, 0);
    }
    // if setTimeout wasn't available but was latter defined
    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
        cachedSetTimeout = setTimeout;
        return setTimeout(fun, 0);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedSetTimeout(fun, 0);
    } catch(e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
            return cachedSetTimeout.call(null, fun, 0);
        } catch(e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
            return cachedSetTimeout.call(this, fun, 0);
        }
    }


}
function runClearTimeout(marker) {
    if (cachedClearTimeout === clearTimeout) {
        //normal enviroments in sane situations
        return clearTimeout(marker);
    }
    // if clearTimeout wasn't available but was latter defined
    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
        cachedClearTimeout = clearTimeout;
        return clearTimeout(marker);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedClearTimeout(marker);
    } catch (e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
            return cachedClearTimeout.call(null, marker);
        } catch (e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
            return cachedClearTimeout.call(this, marker);
        }
    }



}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;

function cleanUpNextTick() {
    if (!draining || !currentQueue) {
        return;
    }
    draining = false;
    if (currentQueue.length) {
        queue = currentQueue.concat(queue);
    } else {
        queueIndex = -1;
    }
    if (queue.length) {
        drainQueue();
    }
}

function drainQueue() {
    if (draining) {
        return;
    }
    var timeout = runTimeout(cleanUpNextTick);
    draining = true;

    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        while (++queueIndex < len) {
            if (currentQueue) {
                currentQueue[queueIndex].run();
            }
        }
        queueIndex = -1;
        len = queue.length;
    }
    currentQueue = null;
    draining = false;
    runClearTimeout(timeout);
}

process.nextTick = function (fun) {
    var args = new Array(arguments.length - 1);
    if (arguments.length > 1) {
        for (var i = 1; i < arguments.length; i++) {
            args[i - 1] = arguments[i];
        }
    }
    queue.push(new Item(fun, args));
    if (queue.length === 1 && !draining) {
        runTimeout(drainQueue);
    }
};

// v8 likes predictible objects
function Item(fun, array) {
    this.fun = fun;
    this.array = array;
}
Item.prototype.run = function () {
    this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;

process.listeners = function (name) { return [] }

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };

},{}],121:[function(require,module,exports){
'use strict';

var replace = String.prototype.replace;
var percentTwenties = /%20/g;

var Format = {
    RFC1738: 'RFC1738',
    RFC3986: 'RFC3986'
};

module.exports = {
    'default': Format.RFC3986,
    formatters: {
        RFC1738: function (value) {
            return replace.call(value, percentTwenties, '+');
        },
        RFC3986: function (value) {
            return String(value);
        }
    },
    RFC1738: Format.RFC1738,
    RFC3986: Format.RFC3986
};

},{}],122:[function(require,module,exports){
'use strict';

var stringify = require('./stringify');
var parse = require('./parse');
var formats = require('./formats');

module.exports = {
    formats: formats,
    parse: parse,
    stringify: stringify
};

},{"./formats":121,"./parse":123,"./stringify":124}],123:[function(require,module,exports){
'use strict';

var utils = require('./utils');

var has = Object.prototype.hasOwnProperty;
var isArray = Array.isArray;

var defaults = {
    allowDots: false,
    allowPrototypes: false,
    allowSparse: false,
    arrayLimit: 20,
    charset: 'utf-8',
    charsetSentinel: false,
    comma: false,
    decoder: utils.decode,
    delimiter: '&',
    depth: 5,
    ignoreQueryPrefix: false,
    interpretNumericEntities: false,
    parameterLimit: 1000,
    parseArrays: true,
    plainObjects: false,
    strictNullHandling: false
};

var interpretNumericEntities = function (str) {
    return str.replace(/&#(\d+);/g, function ($0, numberStr) {
        return String.fromCharCode(parseInt(numberStr, 10));
    });
};

var parseArrayValue = function (val, options) {
    if (val && typeof val === 'string' && options.comma && val.indexOf(',') > -1) {
        return val.split(',');
    }

    return val;
};

// This is what browsers will submit when the ✓ character occurs in an
// application/x-www-form-urlencoded body and the encoding of the page containing
// the form is iso-8859-1, or when the submitted form has an accept-charset
// attribute of iso-8859-1. Presumably also with other charsets that do not contain
// the ✓ character, such as us-ascii.
var isoSentinel = 'utf8=%26%2310003%3B'; // encodeURIComponent('&#10003;')

// These are the percent-encoded utf-8 octets representing a checkmark, indicating that the request actually is utf-8 encoded.
var charsetSentinel = 'utf8=%E2%9C%93'; // encodeURIComponent('✓')

var parseValues = function parseQueryStringValues(str, options) {
    var obj = {};
    var cleanStr = options.ignoreQueryPrefix ? str.replace(/^\?/, '') : str;
    var limit = options.parameterLimit === Infinity ? undefined : options.parameterLimit;
    var parts = cleanStr.split(options.delimiter, limit);
    var skipIndex = -1; // Keep track of where the utf8 sentinel was found
    var i;

    var charset = options.charset;
    if (options.charsetSentinel) {
        for (i = 0; i < parts.length; ++i) {
            if (parts[i].indexOf('utf8=') === 0) {
                if (parts[i] === charsetSentinel) {
                    charset = 'utf-8';
                } else if (parts[i] === isoSentinel) {
                    charset = 'iso-8859-1';
                }
                skipIndex = i;
                i = parts.length; // The eslint settings do not allow break;
            }
        }
    }

    for (i = 0; i < parts.length; ++i) {
        if (i === skipIndex) {
            continue;
        }
        var part = parts[i];

        var bracketEqualsPos = part.indexOf(']=');
        var pos = bracketEqualsPos === -1 ? part.indexOf('=') : bracketEqualsPos + 1;

        var key, val;
        if (pos === -1) {
            key = options.decoder(part, defaults.decoder, charset, 'key');
            val = options.strictNullHandling ? null : '';
        } else {
            key = options.decoder(part.slice(0, pos), defaults.decoder, charset, 'key');
            val = utils.maybeMap(
                parseArrayValue(part.slice(pos + 1), options),
                function (encodedVal) {
                    return options.decoder(encodedVal, defaults.decoder, charset, 'value');
                }
            );
        }

        if (val && options.interpretNumericEntities && charset === 'iso-8859-1') {
            val = interpretNumericEntities(val);
        }

        if (part.indexOf('[]=') > -1) {
            val = isArray(val) ? [val] : val;
        }

        if (has.call(obj, key)) {
            obj[key] = utils.combine(obj[key], val);
        } else {
            obj[key] = val;
        }
    }

    return obj;
};

var parseObject = function (chain, val, options, valuesParsed) {
    var leaf = valuesParsed ? val : parseArrayValue(val, options);

    for (var i = chain.length - 1; i >= 0; --i) {
        var obj;
        var root = chain[i];

        if (root === '[]' && options.parseArrays) {
            obj = [].concat(leaf);
        } else {
            obj = options.plainObjects ? Object.create(null) : {};
            var cleanRoot = root.charAt(0) === '[' && root.charAt(root.length - 1) === ']' ? root.slice(1, -1) : root;
            var index = parseInt(cleanRoot, 10);
            if (!options.parseArrays && cleanRoot === '') {
                obj = { 0: leaf };
            } else if (
                !isNaN(index)
                && root !== cleanRoot
                && String(index) === cleanRoot
                && index >= 0
                && (options.parseArrays && index <= options.arrayLimit)
            ) {
                obj = [];
                obj[index] = leaf;
            } else {
                obj[cleanRoot] = leaf;
            }
        }

        leaf = obj;
    }

    return leaf;
};

var parseKeys = function parseQueryStringKeys(givenKey, val, options, valuesParsed) {
    if (!givenKey) {
        return;
    }

    // Transform dot notation to bracket notation
    var key = options.allowDots ? givenKey.replace(/\.([^.[]+)/g, '[$1]') : givenKey;

    // The regex chunks

    var brackets = /(\[[^[\]]*])/;
    var child = /(\[[^[\]]*])/g;

    // Get the parent

    var segment = options.depth > 0 && brackets.exec(key);
    var parent = segment ? key.slice(0, segment.index) : key;

    // Stash the parent if it exists

    var keys = [];
    if (parent) {
        // If we aren't using plain objects, optionally prefix keys that would overwrite object prototype properties
        if (!options.plainObjects && has.call(Object.prototype, parent)) {
            if (!options.allowPrototypes) {
                return;
            }
        }

        keys.push(parent);
    }

    // Loop through children appending to the array until we hit depth

    var i = 0;
    while (options.depth > 0 && (segment = child.exec(key)) !== null && i < options.depth) {
        i += 1;
        if (!options.plainObjects && has.call(Object.prototype, segment[1].slice(1, -1))) {
            if (!options.allowPrototypes) {
                return;
            }
        }
        keys.push(segment[1]);
    }

    // If there's a remainder, just add whatever is left

    if (segment) {
        keys.push('[' + key.slice(segment.index) + ']');
    }

    return parseObject(keys, val, options, valuesParsed);
};

var normalizeParseOptions = function normalizeParseOptions(opts) {
    if (!opts) {
        return defaults;
    }

    if (opts.decoder !== null && opts.decoder !== undefined && typeof opts.decoder !== 'function') {
        throw new TypeError('Decoder has to be a function.');
    }

    if (typeof opts.charset !== 'undefined' && opts.charset !== 'utf-8' && opts.charset !== 'iso-8859-1') {
        throw new TypeError('The charset option must be either utf-8, iso-8859-1, or undefined');
    }
    var charset = typeof opts.charset === 'undefined' ? defaults.charset : opts.charset;

    return {
        allowDots: typeof opts.allowDots === 'undefined' ? defaults.allowDots : !!opts.allowDots,
        allowPrototypes: typeof opts.allowPrototypes === 'boolean' ? opts.allowPrototypes : defaults.allowPrototypes,
        allowSparse: typeof opts.allowSparse === 'boolean' ? opts.allowSparse : defaults.allowSparse,
        arrayLimit: typeof opts.arrayLimit === 'number' ? opts.arrayLimit : defaults.arrayLimit,
        charset: charset,
        charsetSentinel: typeof opts.charsetSentinel === 'boolean' ? opts.charsetSentinel : defaults.charsetSentinel,
        comma: typeof opts.comma === 'boolean' ? opts.comma : defaults.comma,
        decoder: typeof opts.decoder === 'function' ? opts.decoder : defaults.decoder,
        delimiter: typeof opts.delimiter === 'string' || utils.isRegExp(opts.delimiter) ? opts.delimiter : defaults.delimiter,
        // eslint-disable-next-line no-implicit-coercion, no-extra-parens
        depth: (typeof opts.depth === 'number' || opts.depth === false) ? +opts.depth : defaults.depth,
        ignoreQueryPrefix: opts.ignoreQueryPrefix === true,
        interpretNumericEntities: typeof opts.interpretNumericEntities === 'boolean' ? opts.interpretNumericEntities : defaults.interpretNumericEntities,
        parameterLimit: typeof opts.parameterLimit === 'number' ? opts.parameterLimit : defaults.parameterLimit,
        parseArrays: opts.parseArrays !== false,
        plainObjects: typeof opts.plainObjects === 'boolean' ? opts.plainObjects : defaults.plainObjects,
        strictNullHandling: typeof opts.strictNullHandling === 'boolean' ? opts.strictNullHandling : defaults.strictNullHandling
    };
};

module.exports = function (str, opts) {
    var options = normalizeParseOptions(opts);

    if (str === '' || str === null || typeof str === 'undefined') {
        return options.plainObjects ? Object.create(null) : {};
    }

    var tempObj = typeof str === 'string' ? parseValues(str, options) : str;
    var obj = options.plainObjects ? Object.create(null) : {};

    // Iterate over the keys and setup the new object

    var keys = Object.keys(tempObj);
    for (var i = 0; i < keys.length; ++i) {
        var key = keys[i];
        var newObj = parseKeys(key, tempObj[key], options, typeof str === 'string');
        obj = utils.merge(obj, newObj, options);
    }

    if (options.allowSparse === true) {
        return obj;
    }

    return utils.compact(obj);
};

},{"./utils":125}],124:[function(require,module,exports){
'use strict';

var getSideChannel = require('side-channel');
var utils = require('./utils');
var formats = require('./formats');
var has = Object.prototype.hasOwnProperty;

var arrayPrefixGenerators = {
    brackets: function brackets(prefix) {
        return prefix + '[]';
    },
    comma: 'comma',
    indices: function indices(prefix, key) {
        return prefix + '[' + key + ']';
    },
    repeat: function repeat(prefix) {
        return prefix;
    }
};

var isArray = Array.isArray;
var split = String.prototype.split;
var push = Array.prototype.push;
var pushToArray = function (arr, valueOrArray) {
    push.apply(arr, isArray(valueOrArray) ? valueOrArray : [valueOrArray]);
};

var toISO = Date.prototype.toISOString;

var defaultFormat = formats['default'];
var defaults = {
    addQueryPrefix: false,
    allowDots: false,
    charset: 'utf-8',
    charsetSentinel: false,
    delimiter: '&',
    encode: true,
    encoder: utils.encode,
    encodeValuesOnly: false,
    format: defaultFormat,
    formatter: formats.formatters[defaultFormat],
    // deprecated
    indices: false,
    serializeDate: function serializeDate(date) {
        return toISO.call(date);
    },
    skipNulls: false,
    strictNullHandling: false
};

var isNonNullishPrimitive = function isNonNullishPrimitive(v) {
    return typeof v === 'string'
        || typeof v === 'number'
        || typeof v === 'boolean'
        || typeof v === 'symbol'
        || typeof v === 'bigint';
};

var sentinel = {};

var stringify = function stringify(
    object,
    prefix,
    generateArrayPrefix,
    strictNullHandling,
    skipNulls,
    encoder,
    filter,
    sort,
    allowDots,
    serializeDate,
    format,
    formatter,
    encodeValuesOnly,
    charset,
    sideChannel
) {
    var obj = object;

    var tmpSc = sideChannel;
    var step = 0;
    var findFlag = false;
    while ((tmpSc = tmpSc.get(sentinel)) !== undefined && !findFlag) {
        // Where object last appeared in the ref tree
        var pos = tmpSc.get(object);
        step += 1;
        if (typeof pos !== 'undefined') {
            if (pos === step) {
                throw new RangeError('Cyclic object value');
            } else {
                findFlag = true; // Break while
            }
        }
        if (typeof tmpSc.get(sentinel) === 'undefined') {
            step = 0;
        }
    }

    if (typeof filter === 'function') {
        obj = filter(prefix, obj);
    } else if (obj instanceof Date) {
        obj = serializeDate(obj);
    } else if (generateArrayPrefix === 'comma' && isArray(obj)) {
        obj = utils.maybeMap(obj, function (value) {
            if (value instanceof Date) {
                return serializeDate(value);
            }
            return value;
        });
    }

    if (obj === null) {
        if (strictNullHandling) {
            return encoder && !encodeValuesOnly ? encoder(prefix, defaults.encoder, charset, 'key', format) : prefix;
        }

        obj = '';
    }

    if (isNonNullishPrimitive(obj) || utils.isBuffer(obj)) {
        if (encoder) {
            var keyValue = encodeValuesOnly ? prefix : encoder(prefix, defaults.encoder, charset, 'key', format);
            if (generateArrayPrefix === 'comma' && encodeValuesOnly) {
                var valuesArray = split.call(String(obj), ',');
                var valuesJoined = '';
                for (var i = 0; i < valuesArray.length; ++i) {
                    valuesJoined += (i === 0 ? '' : ',') + formatter(encoder(valuesArray[i], defaults.encoder, charset, 'value', format));
                }
                return [formatter(keyValue) + '=' + valuesJoined];
            }
            return [formatter(keyValue) + '=' + formatter(encoder(obj, defaults.encoder, charset, 'value', format))];
        }
        return [formatter(prefix) + '=' + formatter(String(obj))];
    }

    var values = [];

    if (typeof obj === 'undefined') {
        return values;
    }

    var objKeys;
    if (generateArrayPrefix === 'comma' && isArray(obj)) {
        // we need to join elements in
        objKeys = [{ value: obj.length > 0 ? obj.join(',') || null : undefined }];
    } else if (isArray(filter)) {
        objKeys = filter;
    } else {
        var keys = Object.keys(obj);
        objKeys = sort ? keys.sort(sort) : keys;
    }

    for (var j = 0; j < objKeys.length; ++j) {
        var key = objKeys[j];
        var value = typeof key === 'object' && key.value !== undefined ? key.value : obj[key];

        if (skipNulls && value === null) {
            continue;
        }

        var keyPrefix = isArray(obj)
            ? typeof generateArrayPrefix === 'function' ? generateArrayPrefix(prefix, key) : prefix
            : prefix + (allowDots ? '.' + key : '[' + key + ']');

        sideChannel.set(object, step);
        var valueSideChannel = getSideChannel();
        valueSideChannel.set(sentinel, sideChannel);
        pushToArray(values, stringify(
            value,
            keyPrefix,
            generateArrayPrefix,
            strictNullHandling,
            skipNulls,
            encoder,
            filter,
            sort,
            allowDots,
            serializeDate,
            format,
            formatter,
            encodeValuesOnly,
            charset,
            valueSideChannel
        ));
    }

    return values;
};

var normalizeStringifyOptions = function normalizeStringifyOptions(opts) {
    if (!opts) {
        return defaults;
    }

    if (opts.encoder !== null && opts.encoder !== undefined && typeof opts.encoder !== 'function') {
        throw new TypeError('Encoder has to be a function.');
    }

    var charset = opts.charset || defaults.charset;
    if (typeof opts.charset !== 'undefined' && opts.charset !== 'utf-8' && opts.charset !== 'iso-8859-1') {
        throw new TypeError('The charset option must be either utf-8, iso-8859-1, or undefined');
    }

    var format = formats['default'];
    if (typeof opts.format !== 'undefined') {
        if (!has.call(formats.formatters, opts.format)) {
            throw new TypeError('Unknown format option provided.');
        }
        format = opts.format;
    }
    var formatter = formats.formatters[format];

    var filter = defaults.filter;
    if (typeof opts.filter === 'function' || isArray(opts.filter)) {
        filter = opts.filter;
    }

    return {
        addQueryPrefix: typeof opts.addQueryPrefix === 'boolean' ? opts.addQueryPrefix : defaults.addQueryPrefix,
        allowDots: typeof opts.allowDots === 'undefined' ? defaults.allowDots : !!opts.allowDots,
        charset: charset,
        charsetSentinel: typeof opts.charsetSentinel === 'boolean' ? opts.charsetSentinel : defaults.charsetSentinel,
        delimiter: typeof opts.delimiter === 'undefined' ? defaults.delimiter : opts.delimiter,
        encode: typeof opts.encode === 'boolean' ? opts.encode : defaults.encode,
        encoder: typeof opts.encoder === 'function' ? opts.encoder : defaults.encoder,
        encodeValuesOnly: typeof opts.encodeValuesOnly === 'boolean' ? opts.encodeValuesOnly : defaults.encodeValuesOnly,
        filter: filter,
        format: format,
        formatter: formatter,
        serializeDate: typeof opts.serializeDate === 'function' ? opts.serializeDate : defaults.serializeDate,
        skipNulls: typeof opts.skipNulls === 'boolean' ? opts.skipNulls : defaults.skipNulls,
        sort: typeof opts.sort === 'function' ? opts.sort : null,
        strictNullHandling: typeof opts.strictNullHandling === 'boolean' ? opts.strictNullHandling : defaults.strictNullHandling
    };
};

module.exports = function (object, opts) {
    var obj = object;
    var options = normalizeStringifyOptions(opts);

    var objKeys;
    var filter;

    if (typeof options.filter === 'function') {
        filter = options.filter;
        obj = filter('', obj);
    } else if (isArray(options.filter)) {
        filter = options.filter;
        objKeys = filter;
    }

    var keys = [];

    if (typeof obj !== 'object' || obj === null) {
        return '';
    }

    var arrayFormat;
    if (opts && opts.arrayFormat in arrayPrefixGenerators) {
        arrayFormat = opts.arrayFormat;
    } else if (opts && 'indices' in opts) {
        arrayFormat = opts.indices ? 'indices' : 'repeat';
    } else {
        arrayFormat = 'indices';
    }

    var generateArrayPrefix = arrayPrefixGenerators[arrayFormat];

    if (!objKeys) {
        objKeys = Object.keys(obj);
    }

    if (options.sort) {
        objKeys.sort(options.sort);
    }

    var sideChannel = getSideChannel();
    for (var i = 0; i < objKeys.length; ++i) {
        var key = objKeys[i];

        if (options.skipNulls && obj[key] === null) {
            continue;
        }
        pushToArray(keys, stringify(
            obj[key],
            key,
            generateArrayPrefix,
            options.strictNullHandling,
            options.skipNulls,
            options.encode ? options.encoder : null,
            options.filter,
            options.sort,
            options.allowDots,
            options.serializeDate,
            options.format,
            options.formatter,
            options.encodeValuesOnly,
            options.charset,
            sideChannel
        ));
    }

    var joined = keys.join(options.delimiter);
    var prefix = options.addQueryPrefix === true ? '?' : '';

    if (options.charsetSentinel) {
        if (options.charset === 'iso-8859-1') {
            // encodeURIComponent('&#10003;'), the "numeric entity" representation of a checkmark
            prefix += 'utf8=%26%2310003%3B&';
        } else {
            // encodeURIComponent('✓')
            prefix += 'utf8=%E2%9C%93&';
        }
    }

    return joined.length > 0 ? prefix + joined : '';
};

},{"./formats":121,"./utils":125,"side-channel":143}],125:[function(require,module,exports){
'use strict';

var formats = require('./formats');

var has = Object.prototype.hasOwnProperty;
var isArray = Array.isArray;

var hexTable = (function () {
    var array = [];
    for (var i = 0; i < 256; ++i) {
        array.push('%' + ((i < 16 ? '0' : '') + i.toString(16)).toUpperCase());
    }

    return array;
}());

var compactQueue = function compactQueue(queue) {
    while (queue.length > 1) {
        var item = queue.pop();
        var obj = item.obj[item.prop];

        if (isArray(obj)) {
            var compacted = [];

            for (var j = 0; j < obj.length; ++j) {
                if (typeof obj[j] !== 'undefined') {
                    compacted.push(obj[j]);
                }
            }

            item.obj[item.prop] = compacted;
        }
    }
};

var arrayToObject = function arrayToObject(source, options) {
    var obj = options && options.plainObjects ? Object.create(null) : {};
    for (var i = 0; i < source.length; ++i) {
        if (typeof source[i] !== 'undefined') {
            obj[i] = source[i];
        }
    }

    return obj;
};

var merge = function merge(target, source, options) {
    /* eslint no-param-reassign: 0 */
    if (!source) {
        return target;
    }

    if (typeof source !== 'object') {
        if (isArray(target)) {
            target.push(source);
        } else if (target && typeof target === 'object') {
            if ((options && (options.plainObjects || options.allowPrototypes)) || !has.call(Object.prototype, source)) {
                target[source] = true;
            }
        } else {
            return [target, source];
        }

        return target;
    }

    if (!target || typeof target !== 'object') {
        return [target].concat(source);
    }

    var mergeTarget = target;
    if (isArray(target) && !isArray(source)) {
        mergeTarget = arrayToObject(target, options);
    }

    if (isArray(target) && isArray(source)) {
        source.forEach(function (item, i) {
            if (has.call(target, i)) {
                var targetItem = target[i];
                if (targetItem && typeof targetItem === 'object' && item && typeof item === 'object') {
                    target[i] = merge(targetItem, item, options);
                } else {
                    target.push(item);
                }
            } else {
                target[i] = item;
            }
        });
        return target;
    }

    return Object.keys(source).reduce(function (acc, key) {
        var value = source[key];

        if (has.call(acc, key)) {
            acc[key] = merge(acc[key], value, options);
        } else {
            acc[key] = value;
        }
        return acc;
    }, mergeTarget);
};

var assign = function assignSingleSource(target, source) {
    return Object.keys(source).reduce(function (acc, key) {
        acc[key] = source[key];
        return acc;
    }, target);
};

var decode = function (str, decoder, charset) {
    var strWithoutPlus = str.replace(/\+/g, ' ');
    if (charset === 'iso-8859-1') {
        // unescape never throws, no try...catch needed:
        return strWithoutPlus.replace(/%[0-9a-f]{2}/gi, unescape);
    }
    // utf-8
    try {
        return decodeURIComponent(strWithoutPlus);
    } catch (e) {
        return strWithoutPlus;
    }
};

var encode = function encode(str, defaultEncoder, charset, kind, format) {
    // This code was originally written by Brian White (mscdex) for the io.js core querystring library.
    // It has been adapted here for stricter adherence to RFC 3986
    if (str.length === 0) {
        return str;
    }

    var string = str;
    if (typeof str === 'symbol') {
        string = Symbol.prototype.toString.call(str);
    } else if (typeof str !== 'string') {
        string = String(str);
    }

    if (charset === 'iso-8859-1') {
        return escape(string).replace(/%u[0-9a-f]{4}/gi, function ($0) {
            return '%26%23' + parseInt($0.slice(2), 16) + '%3B';
        });
    }

    var out = '';
    for (var i = 0; i < string.length; ++i) {
        var c = string.charCodeAt(i);

        if (
            c === 0x2D // -
            || c === 0x2E // .
            || c === 0x5F // _
            || c === 0x7E // ~
            || (c >= 0x30 && c <= 0x39) // 0-9
            || (c >= 0x41 && c <= 0x5A) // a-z
            || (c >= 0x61 && c <= 0x7A) // A-Z
            || (format === formats.RFC1738 && (c === 0x28 || c === 0x29)) // ( )
        ) {
            out += string.charAt(i);
            continue;
        }

        if (c < 0x80) {
            out = out + hexTable[c];
            continue;
        }

        if (c < 0x800) {
            out = out + (hexTable[0xC0 | (c >> 6)] + hexTable[0x80 | (c & 0x3F)]);
            continue;
        }

        if (c < 0xD800 || c >= 0xE000) {
            out = out + (hexTable[0xE0 | (c >> 12)] + hexTable[0x80 | ((c >> 6) & 0x3F)] + hexTable[0x80 | (c & 0x3F)]);
            continue;
        }

        i += 1;
        c = 0x10000 + (((c & 0x3FF) << 10) | (string.charCodeAt(i) & 0x3FF));
        /* eslint operator-linebreak: [2, "before"] */
        out += hexTable[0xF0 | (c >> 18)]
            + hexTable[0x80 | ((c >> 12) & 0x3F)]
            + hexTable[0x80 | ((c >> 6) & 0x3F)]
            + hexTable[0x80 | (c & 0x3F)];
    }

    return out;
};

var compact = function compact(value) {
    var queue = [{ obj: { o: value }, prop: 'o' }];
    var refs = [];

    for (var i = 0; i < queue.length; ++i) {
        var item = queue[i];
        var obj = item.obj[item.prop];

        var keys = Object.keys(obj);
        for (var j = 0; j < keys.length; ++j) {
            var key = keys[j];
            var val = obj[key];
            if (typeof val === 'object' && val !== null && refs.indexOf(val) === -1) {
                queue.push({ obj: obj, prop: key });
                refs.push(val);
            }
        }
    }

    compactQueue(queue);

    return value;
};

var isRegExp = function isRegExp(obj) {
    return Object.prototype.toString.call(obj) === '[object RegExp]';
};

var isBuffer = function isBuffer(obj) {
    if (!obj || typeof obj !== 'object') {
        return false;
    }

    return !!(obj.constructor && obj.constructor.isBuffer && obj.constructor.isBuffer(obj));
};

var combine = function combine(a, b) {
    return [].concat(a, b);
};

var maybeMap = function maybeMap(val, fn) {
    if (isArray(val)) {
        var mapped = [];
        for (var i = 0; i < val.length; i += 1) {
            mapped.push(fn(val[i]));
        }
        return mapped;
    }
    return fn(val);
};

module.exports = {
    arrayToObject: arrayToObject,
    assign: assign,
    combine: combine,
    compact: compact,
    decode: decode,
    encode: encode,
    isBuffer: isBuffer,
    isRegExp: isRegExp,
    maybeMap: maybeMap,
    merge: merge
};

},{"./formats":121}],126:[function(require,module,exports){
(function (global){(function (){
/*! queue-microtask. MIT License. Feross Aboukhadijeh <https://feross.org/opensource> */
let promise

module.exports = typeof queueMicrotask === 'function'
  ? queueMicrotask.bind(typeof window !== 'undefined' ? window : global)
  // reuse resolved promise, and allocate it lazily
  : cb => (promise || (promise = Promise.resolve()))
    .then(cb)
    .catch(err => setTimeout(() => { throw err }, 0))

}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],127:[function(require,module,exports){
var inherits = require('inherits')
var EventEmitter = require('events').EventEmitter
var now = require('right-now')
var raf = require('raf')

module.exports = Engine
function Engine(fn) {
    if (!(this instanceof Engine)) 
        return new Engine(fn)
    this.running = false
    this.last = now()
    this._frame = 0
    this._tick = this.tick.bind(this)

    if (fn)
        this.on('tick', fn)
}

inherits(Engine, EventEmitter)

Engine.prototype.start = function() {
    if (this.running) 
        return
    this.running = true
    this.last = now()
    this._frame = raf(this._tick)
    return this
}

Engine.prototype.stop = function() {
    this.running = false
    if (this._frame !== 0)
        raf.cancel(this._frame)
    this._frame = 0
    return this
}

Engine.prototype.tick = function() {
    this._frame = raf(this._tick)
    var time = now()
    var dt = time - this.last
    this.emit('tick', dt)
    this.last = time
}
},{"events":74,"inherits":85,"raf":128,"right-now":132}],128:[function(require,module,exports){
(function (global){(function (){
var now = require('performance-now')
  , root = typeof window === 'undefined' ? global : window
  , vendors = ['moz', 'webkit']
  , suffix = 'AnimationFrame'
  , raf = root['request' + suffix]
  , caf = root['cancel' + suffix] || root['cancelRequest' + suffix]

for(var i = 0; !raf && i < vendors.length; i++) {
  raf = root[vendors[i] + 'Request' + suffix]
  caf = root[vendors[i] + 'Cancel' + suffix]
      || root[vendors[i] + 'CancelRequest' + suffix]
}

// Some versions of FF have rAF but not cAF
if(!raf || !caf) {
  var last = 0
    , id = 0
    , queue = []
    , frameDuration = 1000 / 60

  raf = function(callback) {
    if(queue.length === 0) {
      var _now = now()
        , next = Math.max(0, frameDuration - (_now - last))
      last = next + _now
      setTimeout(function() {
        var cp = queue.slice(0)
        // Clear queue here to prevent
        // callbacks from appending listeners
        // to the current frame's queue
        queue.length = 0
        for(var i = 0; i < cp.length; i++) {
          if(!cp[i].cancelled) {
            try{
              cp[i].callback(last)
            } catch(e) {
              setTimeout(function() { throw e }, 0)
            }
          }
        }
      }, Math.round(next))
    }
    queue.push({
      handle: ++id,
      callback: callback,
      cancelled: false
    })
    return id
  }

  caf = function(handle) {
    for(var i = 0; i < queue.length; i++) {
      if(queue[i].handle === handle) {
        queue[i].cancelled = true
      }
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return{cancel:function(){function b(){var a=Cb(C,b);C[a]=C[C.length-1];--C.length;0>=C.length&&e()}var c=Cb(C,a);C[c]=b}}}function t(){var a=Q.viewport,b=Q.scissor_box;a[0]=a[1]=b[0]=b[1]=0;G.viewportWidth=G.framebufferWidth=G.drawingBufferWidth=a[2]=b[2]=l.drawingBufferWidth;G.viewportHeight=G.framebufferHeight=G.drawingBufferHeight=a[3]=b[3]=l.drawingBufferHeight}function w(){G.tick+=1;G.time=v();t();R.procs.poll()}function k(){y.refresh();t();R.procs.refresh();z&&z.update()}function v(){return(Db()-
E)/1E3}a=Ib(a);if(!a)return null;var l=a.gl,h=l.getContextAttributes();l.isContextLost();var g=Jb(l,a);if(!g)return null;var q=Fb(),r={vaoCount:0,bufferCount:0,elementsCount:0,framebufferCount:0,shaderCount:0,textureCount:0,cubeCount:0,renderbufferCount:0,maxTextureUnits:0},m=g.extensions,z=$b(l,m),E=Db(),F=l.drawingBufferWidth,K=l.drawingBufferHeight,G={tick:0,time:0,viewportWidth:F,viewportHeight:K,framebufferWidth:F,framebufferHeight:K,drawingBufferWidth:F,drawingBufferHeight:K,pixelRatio:a.pixelRatio},
H=Yb(l,m),O=Kb(l,r,a,function(a){return J.destroyBuffer(a)}),J=Sb(l,m,H,r,O),M=Lb(l,m,O,r),D=Tb(l,q,r,a),y=Ob(l,m,H,function(){R.procs.poll()},G,r,a),L=Zb(l,m,H,r,a),V=Rb(l,m,H,y,L,r),R=Wb(l,q,m,H,O,M,y,V,{},J,D,{elements:null,primitive:4,count:-1,offset:0,instances:-1},G,z,a),q=Ub(l,V,R.procs.poll,G,h,m,H),Q=R.next,N=l.canvas,C=[],S=[],T=[],U=[a.onDestroy],aa=null;N&&(N.addEventListener("webglcontextlost",f,!1),N.addEventListener("webglcontextrestored",d,!1));var X=V.setFBO=p({framebuffer:Y.define.call(null,
1,"framebuffer")});k();h=A(p,{clear:function(a){if("framebuffer"in a)if(a.framebuffer&&"framebufferCube"===a.framebuffer_reglType)for(var b=0;6>b;++b)X(A({framebuffer:a.framebuffer.faces[b]},a),n);else X(a,n);else n(null,a)},prop:Y.define.bind(null,1),context:Y.define.bind(null,2),"this":Y.define.bind(null,3),draw:p({}),buffer:function(a){return O.create(a,34962,!1,!1)},elements:function(a){return M.create(a,!1)},texture:y.create2D,cube:y.createCube,renderbuffer:L.create,framebuffer:V.create,framebufferCube:V.createCube,
vao:J.createVAO,attributes:h,frame:u,on:function(a,b){var c;switch(a){case "frame":return u(b);case "lost":c=S;break;case "restore":c=T;break;case "destroy":c=U}c.push(b);return{cancel:function(){for(var a=0;a<c.length;++a)if(c[a]===b){c[a]=c[c.length-1];c.pop();break}}}},limits:H,hasExtension:function(a){return 0<=H.extensions.indexOf(a.toLowerCase())},read:q,destroy:function(){C.length=0;e();N&&(N.removeEventListener("webglcontextlost",f),N.removeEventListener("webglcontextrestored",d));D.clear();
V.clear();L.clear();y.clear();M.clear();O.clear();J.clear();z&&z.clear();U.forEach(function(a){a()})},_gl:l,_refresh:k,poll:function(){w();z&&z.update()},now:v,stats:r});a.onDone(null,h);return h}});

},{}],131:[function(require,module,exports){
'use strict'

/**
 * Remove a range of items from an array
 *
 * @function removeItems
 * @param {Array<*>} arr The target array
 * @param {number} startIdx The index to begin removing from (inclusive)
 * @param {number} removeCount How many items to remove
 */
module.exports = function removeItems (arr, startIdx, removeCount) {
  var i, length = arr.length

  if (startIdx >= length || removeCount === 0) {
    return
  }

  removeCount = (startIdx + removeCount > length ? length - startIdx : removeCount)

  var len = length - removeCount

  for (i = startIdx; i < len; ++i) {
    arr[i] = arr[i + removeCount]
  }

  arr.length = len
}

},{}],132:[function(require,module,exports){
(function (global){(function (){
module.exports =
  global.performance &&
  global.performance.now ? function now() {
    return performance.now()
  } : Date.now || function now() {
    return +new Date
  }

}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],133:[function(require,module,exports){
/*! safe-buffer. MIT License. Feross Aboukhadijeh <https://feross.org/opensource> */
/* eslint-disable node/no-deprecated-api */
var buffer = require('buffer')
var Buffer = buffer.Buffer

// alternative to using Object.keys for old browsers
function copyProps (src, dst) {
  for (var key in src) {
    dst[key] = src[key]
  }
}
if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
  module.exports = buffer
} else {
  // Copy properties from require('buffer')
  copyProps(buffer, exports)
  exports.Buffer = SafeBuffer
}

function SafeBuffer (arg, encodingOrOffset, length) {
  return Buffer(arg, encodingOrOffset, length)
}

SafeBuffer.prototype = Object.create(Buffer.prototype)

// Copy static methods from Buffer
copyProps(Buffer, SafeBuffer)

SafeBuffer.from = function (arg, encodingOrOffset, length) {
  if (typeof arg === 'number') {
    throw new TypeError('Argument must not be a number')
  }
  return Buffer(arg, encodingOrOffset, length)
}

SafeBuffer.alloc = function (size, fill, encoding) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  var buf = Buffer(size)
  if (fill !== undefined) {
    if (typeof encoding === 'string') {
      buf.fill(fill, encoding)
    } else {
      buf.fill(fill)
    }
  } else {
    buf.fill(0)
  }
  return buf
}

SafeBuffer.allocUnsafe = function (size) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  return Buffer(size)
}

SafeBuffer.allocUnsafeSlow = function (size) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  return buffer.SlowBuffer(size)
}

},{"buffer":44}],134:[function(require,module,exports){
'use strict';
module.exports = require('./lib/index');

},{"./lib/index":138}],135:[function(require,module,exports){
'use strict';

var randomFromSeed = require('./random/random-from-seed');

var ORIGINAL = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-';
var alphabet;
var previousSeed;

var shuffled;

function reset() {
    shuffled = false;
}

function setCharacters(_alphabet_) {
    if (!_alphabet_) {
        if (alphabet !== ORIGINAL) {
            alphabet = ORIGINAL;
            reset();
        }
        return;
    }

    if (_alphabet_ === alphabet) {
        return;
    }

    if (_alphabet_.length !== ORIGINAL.length) {
        throw new Error('Custom alphabet for shortid must be ' + ORIGINAL.length + ' unique characters. You submitted ' + _alphabet_.length + ' characters: ' + _alphabet_);
    }

    var unique = _alphabet_.split('').filter(function(item, ind, arr){
       return ind !== arr.lastIndexOf(item);
    });

    if (unique.length) {
        throw new Error('Custom alphabet for shortid must be ' + ORIGINAL.length + ' unique characters. These characters were not unique: ' + unique.join(', '));
    }

    alphabet = _alphabet_;
    reset();
}

function characters(_alphabet_) {
    setCharacters(_alphabet_);
    return alphabet;
}

function setSeed(seed) {
    randomFromSeed.seed(seed);
    if (previousSeed !== seed) {
        reset();
        previousSeed = seed;
    }
}

function shuffle() {
    if (!alphabet) {
        setCharacters(ORIGINAL);
    }

    var sourceArray = alphabet.split('');
    var targetArray = [];
    var r = randomFromSeed.nextValue();
    var characterIndex;

    while (sourceArray.length > 0) {
        r = randomFromSeed.nextValue();
        characterIndex = Math.floor(r * sourceArray.length);
        targetArray.push(sourceArray.splice(characterIndex, 1)[0]);
    }
    return targetArray.join('');
}

function getShuffled() {
    if (shuffled) {
        return shuffled;
    }
    shuffled = shuffle();
    return shuffled;
}

/**
 * lookup shuffled letter
 * @param index
 * @returns {string}
 */
function lookup(index) {
    var alphabetShuffled = getShuffled();
    return alphabetShuffled[index];
}

function get () {
  return alphabet || ORIGINAL;
}

module.exports = {
    get: get,
    characters: characters,
    seed: setSeed,
    lookup: lookup,
    shuffled: getShuffled
};

},{"./random/random-from-seed":141}],136:[function(require,module,exports){
'use strict';

var generate = require('./generate');
var alphabet = require('./alphabet');

// Ignore all milliseconds before a certain time to reduce the size of the date entropy without sacrificing uniqueness.
// This number should be updated every year or so to keep the generated id short.
// To regenerate `new Date() - 0` and bump the version. Always bump the version!
var REDUCE_TIME = 1567752802062;

// don't change unless we change the algos or REDUCE_TIME
// must be an integer and less than 16
var version = 7;

// Counter is used when shortid is called multiple times in one second.
var counter;

// Remember the last time shortid was called in case counter is needed.
var previousSeconds;

/**
 * Generate unique id
 * Returns string id
 */
function build(clusterWorkerId) {
    var str = '';

    var seconds = Math.floor((Date.now() - REDUCE_TIME) * 0.001);

    if (seconds === previousSeconds) {
        counter++;
    } else {
        counter = 0;
        previousSeconds = seconds;
    }

    str = str + generate(version);
    str = str + generate(clusterWorkerId);
    if (counter > 0) {
        str = str + generate(counter);
    }
    str = str + generate(seconds);
    return str;
}

module.exports = build;

},{"./alphabet":135,"./generate":137}],137:[function(require,module,exports){
'use strict';

var alphabet = require('./alphabet');
var random = require('./random/random-byte');
var format = require('nanoid/format');

function generate(number) {
    var loopCounter = 0;
    var done;

    var str = '';

    while (!done) {
        str = str + format(random, alphabet.get(), 1);
        done = number < (Math.pow(16, loopCounter + 1 ) );
        loopCounter++;
    }
    return str;
}

module.exports = generate;

},{"./alphabet":135,"./random/random-byte":140,"nanoid/format":113}],138:[function(require,module,exports){
'use strict';

var alphabet = require('./alphabet');
var build = require('./build');
var isValid = require('./is-valid');

// if you are using cluster or multiple servers use this to make each instance
// has a unique value for worker
// Note: I don't know if this is automatically set when using third
// party cluster solutions such as pm2.
var clusterWorkerId = require('./util/cluster-worker-id') || 0;

/**
 * Set the seed.
 * Highly recommended if you don't want people to try to figure out your id schema.
 * exposed as shortid.seed(int)
 * @param seed Integer value to seed the random alphabet.  ALWAYS USE THE SAME SEED or you might get overlaps.
 */
function seed(seedValue) {
    alphabet.seed(seedValue);
    return module.exports;
}

/**
 * Set the cluster worker or machine id
 * exposed as shortid.worker(int)
 * @param workerId worker must be positive integer.  Number less than 16 is recommended.
 * returns shortid module so it can be chained.
 */
function worker(workerId) {
    clusterWorkerId = workerId;
    return module.exports;
}

/**
 *
 * sets new characters to use in the alphabet
 * returns the shuffled alphabet
 */
function characters(newCharacters) {
    if (newCharacters !== undefined) {
        alphabet.characters(newCharacters);
    }

    return alphabet.shuffled();
}

/**
 * Generate unique id
 * Returns string id
 */
function generate() {
  return build(clusterWorkerId);
}

// Export all other functions as properties of the generate function
module.exports = generate;
module.exports.generate = generate;
module.exports.seed = seed;
module.exports.worker = worker;
module.exports.characters = characters;
module.exports.isValid = isValid;

},{"./alphabet":135,"./build":136,"./is-valid":139,"./util/cluster-worker-id":142}],139:[function(require,module,exports){
'use strict';
var alphabet = require('./alphabet');

function isShortId(id) {
    if (!id || typeof id !== 'string' || id.length < 6 ) {
        return false;
    }

    var nonAlphabetic = new RegExp('[^' +
      alphabet.get().replace(/[|\\{}()[\]^$+*?.-]/g, '\\$&') +
    ']');
    return !nonAlphabetic.test(id);
}

module.exports = isShortId;

},{"./alphabet":135}],140:[function(require,module,exports){
'use strict';

var crypto = typeof window === 'object' && (window.crypto || window.msCrypto); // IE 11 uses window.msCrypto

var randomByte;

if (!crypto || !crypto.getRandomValues) {
    randomByte = function(size) {
        var bytes = [];
        for (var i = 0; i < size; i++) {
            bytes.push(Math.floor(Math.random() * 256));
        }
        return bytes;
    };
} else {
    randomByte = function(size) {
        return crypto.getRandomValues(new Uint8Array(size));
    };
}

module.exports = randomByte;

},{}],141:[function(require,module,exports){
'use strict';

// Found this seed-based random generator somewhere
// Based on The Central Randomizer 1.3 (C) 1997 by Paul Houle (houle@msc.cornell.edu)

var seed = 1;

/**
 * return a random number based on a seed
 * @param seed
 * @returns {number}
 */
function getNextValue() {
    seed = (seed * 9301 + 49297) % 233280;
    return seed/(233280.0);
}

function setSeed(_seed_) {
    seed = _seed_;
}

module.exports = {
    nextValue: getNextValue,
    seed: setSeed
};

},{}],142:[function(require,module,exports){
'use strict';

module.exports = 0;

},{}],143:[function(require,module,exports){
'use strict';

var GetIntrinsic = require('get-intrinsic');
var callBound = require('call-bind/callBound');
var inspect = require('object-inspect');

var $TypeError = GetIntrinsic('%TypeError%');
var $WeakMap = GetIntrinsic('%WeakMap%', true);
var $Map = GetIntrinsic('%Map%', true);

var $weakMapGet = callBound('WeakMap.prototype.get', true);
var $weakMapSet = callBound('WeakMap.prototype.set', true);
var $weakMapHas = callBound('WeakMap.prototype.has', true);
var $mapGet = callBound('Map.prototype.get', true);
var $mapSet = callBound('Map.prototype.set', true);
var $mapHas = callBound('Map.prototype.has', true);

/*
 * This function traverses the list returning the node corresponding to the
 * given key.
 *
 * That node is also moved to the head of the list, so that if it's accessed
 * again we don't need to traverse the whole list. By doing so, all the recently
 * used nodes can be accessed relatively quickly.
 */
var listGetNode = function (list, key) { // eslint-disable-line consistent-return
	for (var prev = list, curr; (curr = prev.next) !== null; prev = curr) {
		if (curr.key === key) {
			prev.next = curr.next;
			curr.next = list.next;
			list.next = curr; // eslint-disable-line no-param-reassign
			return curr;
		}
	}
};

var listGet = function (objects, key) {
	var node = listGetNode(objects, key);
	return node && node.value;
};
var listSet = function (objects, key, value) {
	var node = listGetNode(objects, key);
	if (node) {
		node.value = value;
	} else {
		// Prepend the new node to the beginning of the list
		objects.next = { // eslint-disable-line no-param-reassign
			key: key,
			next: objects.next,
			value: value
		};
	}
};
var listHas = function (objects, key) {
	return !!listGetNode(objects, key);
};

module.exports = function getSideChannel() {
	var $wm;
	var $m;
	var $o;
	var channel = {
		assert: function (key) {
			if (!channel.has(key)) {
				throw new $TypeError('Side channel does not contain ' + inspect(key));
			}
		},
		get: function (key) { // eslint-disable-line consistent-return
			if ($WeakMap && key && (typeof key === 'object' || typeof key === 'function')) {
				if ($wm) {
					return $weakMapGet($wm, key);
				}
			} else if ($Map) {
				if ($m) {
					return $mapGet($m, key);
				}
			} else {
				if ($o) { // eslint-disable-line no-lonely-if
					return listGet($o, key);
				}
			}
		},
		has: function (key) {
			if ($WeakMap && key && (typeof key === 'object' || typeof key === 'function')) {
				if ($wm) {
					return $weakMapHas($wm, key);
				}
			} else if ($Map) {
				if ($m) {
					return $mapHas($m, key);
				}
			} else {
				if ($o) { // eslint-disable-line no-lonely-if
					return listHas($o, key);
				}
			}
			return false;
		},
		set: function (key, value) {
			if ($WeakMap && key && (typeof key === 'object' || typeof key === 'function')) {
				if (!$wm) {
					$wm = new $WeakMap();
				}
				$weakMapSet($wm, key, value);
			} else if ($Map) {
				if (!$m) {
					$m = new $Map();
				}
				$mapSet($m, key, value);
			} else {
				if (!$o) {
					/*
					 * Initialize the linked list as an empty node, so that we don't have
					 * to special-case handling of the first node: we can always refer to
					 * it as (previous node).next, instead of something like (list).head
					 */
					$o = { key: {}, next: null };
				}
				listSet($o, key, value);
			}
		}
	};
	return channel;
};

},{"call-bind/callBound":45,"get-intrinsic":79,"object-inspect":116}],144:[function(require,module,exports){
/*! simple-peer. MIT License. Feross Aboukhadijeh <https://feross.org/opensource> */
const debug = require('debug')('simple-peer')
const getBrowserRTC = require('get-browser-rtc')
const randombytes = require('randombytes')
const stream = require('readable-stream')
const queueMicrotask = require('queue-microtask') // TODO: remove when Node 10 is not supported
const errCode = require('err-code')
const { Buffer } = require('buffer')

const MAX_BUFFERED_AMOUNT = 64 * 1024
const ICECOMPLETE_TIMEOUT = 5 * 1000
const CHANNEL_CLOSING_TIMEOUT = 5 * 1000

// HACK: Filter trickle lines when trickle is disabled #354
function filterTrickle (sdp) {
  return sdp.replace(/a=ice-options:trickle\s\n/g, '')
}

function warn (message) {
  console.warn(message)
}

/**
 * WebRTC peer connection. Same API as node core `net.Socket`, plus a few extra methods.
 * Duplex stream.
 * @param {Object} opts
 */
class Peer extends stream.Duplex {
  constructor (opts) {
    opts = Object.assign({
      allowHalfOpen: false
    }, opts)

    super(opts)

    this._id = randombytes(4).toString('hex').slice(0, 7)
    this._debug('new peer %o', opts)

    this.channelName = opts.initiator
      ? opts.channelName || randombytes(20).toString('hex')
      : null

    this.initiator = opts.initiator || false
    this.channelConfig = opts.channelConfig || Peer.channelConfig
    this.channelNegotiated = this.channelConfig.negotiated
    this.config = Object.assign({}, Peer.config, opts.config)
    this.offerOptions = opts.offerOptions || {}
    this.answerOptions = opts.answerOptions || {}
    this.sdpTransform = opts.sdpTransform || (sdp => sdp)
    this.streams = opts.streams || (opts.stream ? [opts.stream] : []) // support old "stream" option
    this.trickle = opts.trickle !== undefined ? opts.trickle : true
    this.allowHalfTrickle = opts.allowHalfTrickle !== undefined ? opts.allowHalfTrickle : false
    this.iceCompleteTimeout = opts.iceCompleteTimeout || ICECOMPLETE_TIMEOUT

    this.destroyed = false
    this.destroying = false
    this._connected = false

    this.remoteAddress = undefined
    this.remoteFamily = undefined
    this.remotePort = undefined
    this.localAddress = undefined
    this.localFamily = undefined
    this.localPort = undefined

    this._wrtc = (opts.wrtc && typeof opts.wrtc === 'object')
      ? opts.wrtc
      : getBrowserRTC()

    if (!this._wrtc) {
      if (typeof window === 'undefined') {
        throw errCode(new Error('No WebRTC support: Specify `opts.wrtc` option in this environment'), 'ERR_WEBRTC_SUPPORT')
      } else {
        throw errCode(new Error('No WebRTC support: Not a supported browser'), 'ERR_WEBRTC_SUPPORT')
      }
    }

    this._pcReady = false
    this._channelReady = false
    this._iceComplete = false // ice candidate trickle done (got null candidate)
    this._iceCompleteTimer = null // send an offer/answer anyway after some timeout
    this._channel = null
    this._pendingCandidates = []

    this._isNegotiating = false // is this peer waiting for negotiation to complete?
    this._firstNegotiation = true
    this._batchedNegotiation = false // batch synchronous negotiations
    this._queuedNegotiation = false // is there a queued negotiation request?
    this._sendersAwaitingStable = []
    this._senderMap = new Map()
    this._closingInterval = null

    this._remoteTracks = []
    this._remoteStreams = []

    this._chunk = null
    this._cb = null
    this._interval = null

    try {
      this._pc = new (this._wrtc.RTCPeerConnection)(this.config)
    } catch (err) {
      this.destroy(errCode(err, 'ERR_PC_CONSTRUCTOR'))
      return
    }

    // We prefer feature detection whenever possible, but sometimes that's not
    // possible for certain implementations.
    this._isReactNativeWebrtc = typeof this._pc._peerConnectionId === 'number'

    this._pc.oniceconnectionstatechange = () => {
      this._onIceStateChange()
    }
    this._pc.onicegatheringstatechange = () => {
      this._onIceStateChange()
    }
    this._pc.onconnectionstatechange = () => {
      this._onConnectionStateChange()
    }
    this._pc.onsignalingstatechange = () => {
      this._onSignalingStateChange()
    }
    this._pc.onicecandidate = event => {
      this._onIceCandidate(event)
    }

    // HACK: Fix for odd Firefox behavior, see: https://github.com/feross/simple-peer/pull/783
    if (typeof this._pc.peerIdentity === 'object') {
      this._pc.peerIdentity.catch(err => {
        this.destroy(errCode(err, 'ERR_PC_PEER_IDENTITY'))
      })
    }

    // Other spec events, unused by this implementation:
    // - onconnectionstatechange
    // - onicecandidateerror
    // - onfingerprintfailure
    // - onnegotiationneeded

    if (this.initiator || this.channelNegotiated) {
      this._setupData({
        channel: this._pc.createDataChannel(this.channelName, this.channelConfig)
      })
    } else {
      this._pc.ondatachannel = event => {
        this._setupData(event)
      }
    }

    if (this.streams) {
      this.streams.forEach(stream => {
        this.addStream(stream)
      })
    }
    this._pc.ontrack = event => {
      this._onTrack(event)
    }

    this._debug('initial negotiation')
    this._needsNegotiation()

    this._onFinishBound = () => {
      this._onFinish()
    }
    this.once('finish', this._onFinishBound)
  }

  get bufferSize () {
    return (this._channel && this._channel.bufferedAmount) || 0
  }

  // HACK: it's possible channel.readyState is "closing" before peer.destroy() fires
  // https://bugs.chromium.org/p/chromium/issues/detail?id=882743
  get connected () {
    return (this._connected && this._channel.readyState === 'open')
  }

  address () {
    return { port: this.localPort, family: this.localFamily, address: this.localAddress }
  }

  signal (data) {
    if (this.destroying) return
    if (this.destroyed) throw errCode(new Error('cannot signal after peer is destroyed'), 'ERR_DESTROYED')
    if (typeof data === 'string') {
      try {
        data = JSON.parse(data)
      } catch (err) {
        data = {}
      }
    }
    this._debug('signal()')

    if (data.renegotiate && this.initiator) {
      this._debug('got request to renegotiate')
      this._needsNegotiation()
    }
    if (data.transceiverRequest && this.initiator) {
      this._debug('got request for transceiver')
      this.addTransceiver(data.transceiverRequest.kind, data.transceiverRequest.init)
    }
    if (data.candidate) {
      if (this._pc.remoteDescription && this._pc.remoteDescription.type) {
        this._addIceCandidate(data.candidate)
      } else {
        this._pendingCandidates.push(data.candidate)
      }
    }
    if (data.sdp) {
      this._pc.setRemoteDescription(new (this._wrtc.RTCSessionDescription)(data))
        .then(() => {
          if (this.destroyed) return

          this._pendingCandidates.forEach(candidate => {
            this._addIceCandidate(candidate)
          })
          this._pendingCandidates = []

          if (this._pc.remoteDescription.type === 'offer') this._createAnswer()
        })
        .catch(err => {
          this.destroy(errCode(err, 'ERR_SET_REMOTE_DESCRIPTION'))
        })
    }
    if (!data.sdp && !data.candidate && !data.renegotiate && !data.transceiverRequest) {
      this.destroy(errCode(new Error('signal() called with invalid signal data'), 'ERR_SIGNALING'))
    }
  }

  _addIceCandidate (candidate) {
    const iceCandidateObj = new this._wrtc.RTCIceCandidate(candidate)
    this._pc.addIceCandidate(iceCandidateObj)
      .catch(err => {
        if (!iceCandidateObj.address || iceCandidateObj.address.endsWith('.local')) {
          warn('Ignoring unsupported ICE candidate.')
        } else {
          this.destroy(errCode(err, 'ERR_ADD_ICE_CANDIDATE'))
        }
      })
  }

  /**
   * Send text/binary data to the remote peer.
   * @param {ArrayBufferView|ArrayBuffer|Buffer|string|Blob} chunk
   */
  send (chunk) {
    if (this.destroying) return
    if (this.destroyed) throw errCode(new Error('cannot send after peer is destroyed'), 'ERR_DESTROYED')
    this._channel.send(chunk)
  }

  /**
   * Add a Transceiver to the connection.
   * @param {String} kind
   * @param {Object} init
   */
  addTransceiver (kind, init) {
    if (this.destroying) return
    if (this.destroyed) throw errCode(new Error('cannot addTransceiver after peer is destroyed'), 'ERR_DESTROYED')
    this._debug('addTransceiver()')

    if (this.initiator) {
      try {
        this._pc.addTransceiver(kind, init)
        this._needsNegotiation()
      } catch (err) {
        this.destroy(errCode(err, 'ERR_ADD_TRANSCEIVER'))
      }
    } else {
      this.emit('signal', { // request initiator to renegotiate
        type: 'transceiverRequest',
        transceiverRequest: { kind, init }
      })
    }
  }

  /**
   * Add a MediaStream to the connection.
   * @param {MediaStream} stream
   */
  addStream (stream) {
    if (this.destroying) return
    if (this.destroyed) throw errCode(new Error('cannot addStream after peer is destroyed'), 'ERR_DESTROYED')
    this._debug('addStream()')

    stream.getTracks().forEach(track => {
      this.addTrack(track, stream)
    })
  }

  /**
   * Add a MediaStreamTrack to the connection.
   * @param {MediaStreamTrack} track
   * @param {MediaStream} stream
   */
  addTrack (track, stream) {
    if (this.destroying) return
    if (this.destroyed) throw errCode(new Error('cannot addTrack after peer is destroyed'), 'ERR_DESTROYED')
    this._debug('addTrack()')

    const submap = this._senderMap.get(track) || new Map() // nested Maps map [track, stream] to sender
    let sender = submap.get(stream)
    if (!sender) {
      sender = this._pc.addTrack(track, stream)
      submap.set(stream, sender)
      this._senderMap.set(track, submap)
      this._needsNegotiation()
    } else if (sender.removed) {
      throw errCode(new Error('Track has been removed. You should enable/disable tracks that you want to re-add.'), 'ERR_SENDER_REMOVED')
    } else {
      throw errCode(new Error('Track has already been added to that stream.'), 'ERR_SENDER_ALREADY_ADDED')
    }
  }

  /**
   * Replace a MediaStreamTrack by another in the connection.
   * @param {MediaStreamTrack} oldTrack
   * @param {MediaStreamTrack} newTrack
   * @param {MediaStream} stream
   */
  replaceTrack (oldTrack, newTrack, stream) {
    if (this.destroying) return
    if (this.destroyed) throw errCode(new Error('cannot replaceTrack after peer is destroyed'), 'ERR_DESTROYED')
    this._debug('replaceTrack()')

    const submap = this._senderMap.get(oldTrack)
    const sender = submap ? submap.get(stream) : null
    if (!sender) {
      throw errCode(new Error('Cannot replace track that was never added.'), 'ERR_TRACK_NOT_ADDED')
    }
    if (newTrack) this._senderMap.set(newTrack, submap)

    if (sender.replaceTrack != null) {
      sender.replaceTrack(newTrack)
    } else {
      this.destroy(errCode(new Error('replaceTrack is not supported in this browser'), 'ERR_UNSUPPORTED_REPLACETRACK'))
    }
  }

  /**
   * Remove a MediaStreamTrack from the connection.
   * @param {MediaStreamTrack} track
   * @param {MediaStream} stream
   */
  removeTrack (track, stream) {
    if (this.destroying) return
    if (this.destroyed) throw errCode(new Error('cannot removeTrack after peer is destroyed'), 'ERR_DESTROYED')
    this._debug('removeSender()')

    const submap = this._senderMap.get(track)
    const sender = submap ? submap.get(stream) : null
    if (!sender) {
      throw errCode(new Error('Cannot remove track that was never added.'), 'ERR_TRACK_NOT_ADDED')
    }
    try {
      sender.removed = true
      this._pc.removeTrack(sender)
    } catch (err) {
      if (err.name === 'NS_ERROR_UNEXPECTED') {
        this._sendersAwaitingStable.push(sender) // HACK: Firefox must wait until (signalingState === stable) https://bugzilla.mozilla.org/show_bug.cgi?id=1133874
      } else {
        this.destroy(errCode(err, 'ERR_REMOVE_TRACK'))
      }
    }
    this._needsNegotiation()
  }

  /**
   * Remove a MediaStream from the connection.
   * @param {MediaStream} stream
   */
  removeStream (stream) {
    if (this.destroying) return
    if (this.destroyed) throw errCode(new Error('cannot removeStream after peer is destroyed'), 'ERR_DESTROYED')
    this._debug('removeSenders()')

    stream.getTracks().forEach(track => {
      this.removeTrack(track, stream)
    })
  }

  _needsNegotiation () {
    this._debug('_needsNegotiation')
    if (this._batchedNegotiation) return // batch synchronous renegotiations
    this._batchedNegotiation = true
    queueMicrotask(() => {
      this._batchedNegotiation = false
      if (this.initiator || !this._firstNegotiation) {
        this._debug('starting batched negotiation')
        this.negotiate()
      } else {
        this._debug('non-initiator initial negotiation request discarded')
      }
      this._firstNegotiation = false
    })
  }

  negotiate () {
    if (this.destroying) return
    if (this.destroyed) throw errCode(new Error('cannot negotiate after peer is destroyed'), 'ERR_DESTROYED')

    if (this.initiator) {
      if (this._isNegotiating) {
        this._queuedNegotiation = true
        this._debug('already negotiating, queueing')
      } else {
        this._debug('start negotiation')
        setTimeout(() => { // HACK: Chrome crashes if we immediately call createOffer
          this._createOffer()
        }, 0)
      }
    } else {
      if (this._isNegotiating) {
        this._queuedNegotiation = true
        this._debug('already negotiating, queueing')
      } else {
        this._debug('requesting negotiation from initiator')
        this.emit('signal', { // request initiator to renegotiate
          type: 'renegotiate',
          renegotiate: true
        })
      }
    }
    this._isNegotiating = true
  }

  // TODO: Delete this method once readable-stream is updated to contain a default
  // implementation of destroy() that automatically calls _destroy()
  // See: https://github.com/nodejs/readable-stream/issues/283
  destroy (err) {
    this._destroy(err, () => {})
  }

  _destroy (err, cb) {
    if (this.destroyed || this.destroying) return
    this.destroying = true

    this._debug('destroying (error: %s)', err && (err.message || err))

    queueMicrotask(() => { // allow events concurrent with the call to _destroy() to fire (see #692)
      this.destroyed = true
      this.destroying = false

      this._debug('destroy (error: %s)', err && (err.message || err))

      this.readable = this.writable = false

      if (!this._readableState.ended) this.push(null)
      if (!this._writableState.finished) this.end()

      this._connected = false
      this._pcReady = false
      this._channelReady = false
      this._remoteTracks = null
      this._remoteStreams = null
      this._senderMap = null

      clearInterval(this._closingInterval)
      this._closingInterval = null

      clearInterval(this._interval)
      this._interval = null
      this._chunk = null
      this._cb = null

      if (this._onFinishBound) this.removeListener('finish', this._onFinishBound)
      this._onFinishBound = null

      if (this._channel) {
        try {
          this._channel.close()
        } catch (err) {}

        // allow events concurrent with destruction to be handled
        this._channel.onmessage = null
        this._channel.onopen = null
        this._channel.onclose = null
        this._channel.onerror = null
      }
      if (this._pc) {
        try {
          this._pc.close()
        } catch (err) {}

        // allow events concurrent with destruction to be handled
        this._pc.oniceconnectionstatechange = null
        this._pc.onicegatheringstatechange = null
        this._pc.onsignalingstatechange = null
        this._pc.onicecandidate = null
        this._pc.ontrack = null
        this._pc.ondatachannel = null
      }
      this._pc = null
      this._channel = null

      if (err) this.emit('error', err)
      this.emit('close')
      cb()
    })
  }

  _setupData (event) {
    if (!event.channel) {
      // In some situations `pc.createDataChannel()` returns `undefined` (in wrtc),
      // which is invalid behavior. Handle it gracefully.
      // See: https://github.com/feross/simple-peer/issues/163
      return this.destroy(errCode(new Error('Data channel event is missing `channel` property'), 'ERR_DATA_CHANNEL'))
    }

    this._channel = event.channel
    this._channel.binaryType = 'arraybuffer'

    if (typeof this._channel.bufferedAmountLowThreshold === 'number') {
      this._channel.bufferedAmountLowThreshold = MAX_BUFFERED_AMOUNT
    }

    this.channelName = this._channel.label

    this._channel.onmessage = event => {
      this._onChannelMessage(event)
    }
    this._channel.onbufferedamountlow = () => {
      this._onChannelBufferedAmountLow()
    }
    this._channel.onopen = () => {
      this._onChannelOpen()
    }
    this._channel.onclose = () => {
      this._onChannelClose()
    }
    this._channel.onerror = event => {
      const err = event.error instanceof Error
        ? event.error
        : new Error(`Datachannel error: ${event.message} ${event.filename}:${event.lineno}:${event.colno}`)
      this.destroy(errCode(err, 'ERR_DATA_CHANNEL'))
    }

    // HACK: Chrome will sometimes get stuck in readyState "closing", let's check for this condition
    // https://bugs.chromium.org/p/chromium/issues/detail?id=882743
    let isClosing = false
    this._closingInterval = setInterval(() => { // No "onclosing" event
      if (this._channel && this._channel.readyState === 'closing') {
        if (isClosing) this._onChannelClose() // closing timed out: equivalent to onclose firing
        isClosing = true
      } else {
        isClosing = false
      }
    }, CHANNEL_CLOSING_TIMEOUT)
  }

  _read () {}

  _write (chunk, encoding, cb) {
    if (this.destroyed) return cb(errCode(new Error('cannot write after peer is destroyed'), 'ERR_DATA_CHANNEL'))

    if (this._connected) {
      try {
        this.send(chunk)
      } catch (err) {
        return this.destroy(errCode(err, 'ERR_DATA_CHANNEL'))
      }
      if (this._channel.bufferedAmount > MAX_BUFFERED_AMOUNT) {
        this._debug('start backpressure: bufferedAmount %d', this._channel.bufferedAmount)
        this._cb = cb
      } else {
        cb(null)
      }
    } else {
      this._debug('write before connect')
      this._chunk = chunk
      this._cb = cb
    }
  }

  // When stream finishes writing, close socket. Half open connections are not
  // supported.
  _onFinish () {
    if (this.destroyed) return

    // Wait a bit before destroying so the socket flushes.
    // TODO: is there a more reliable way to accomplish this?
    const destroySoon = () => {
      setTimeout(() => this.destroy(), 1000)
    }

    if (this._connected) {
      destroySoon()
    } else {
      this.once('connect', destroySoon)
    }
  }

  _startIceCompleteTimeout () {
    if (this.destroyed) return
    if (this._iceCompleteTimer) return
    this._debug('started iceComplete timeout')
    this._iceCompleteTimer = setTimeout(() => {
      if (!this._iceComplete) {
        this._iceComplete = true
        this._debug('iceComplete timeout completed')
        this.emit('iceTimeout')
        this.emit('_iceComplete')
      }
    }, this.iceCompleteTimeout)
  }

  _createOffer () {
    if (this.destroyed) return

    this._pc.createOffer(this.offerOptions)
      .then(offer => {
        if (this.destroyed) return
        if (!this.trickle && !this.allowHalfTrickle) offer.sdp = filterTrickle(offer.sdp)
        offer.sdp = this.sdpTransform(offer.sdp)

        const sendOffer = () => {
          if (this.destroyed) return
          const signal = this._pc.localDescription || offer
          this._debug('signal')
          this.emit('signal', {
            type: signal.type,
            sdp: signal.sdp
          })
        }

        const onSuccess = () => {
          this._debug('createOffer success')
          if (this.destroyed) return
          if (this.trickle || this._iceComplete) sendOffer()
          else this.once('_iceComplete', sendOffer) // wait for candidates
        }

        const onError = err => {
          this.destroy(errCode(err, 'ERR_SET_LOCAL_DESCRIPTION'))
        }

        this._pc.setLocalDescription(offer)
          .then(onSuccess)
          .catch(onError)
      })
      .catch(err => {
        this.destroy(errCode(err, 'ERR_CREATE_OFFER'))
      })
  }

  _requestMissingTransceivers () {
    if (this._pc.getTransceivers) {
      this._pc.getTransceivers().forEach(transceiver => {
        if (!transceiver.mid && transceiver.sender.track && !transceiver.requested) {
          transceiver.requested = true // HACK: Safari returns negotiated transceivers with a null mid
          this.addTransceiver(transceiver.sender.track.kind)
        }
      })
    }
  }

  _createAnswer () {
    if (this.destroyed) return

    this._pc.createAnswer(this.answerOptions)
      .then(answer => {
        if (this.destroyed) return
        if (!this.trickle && !this.allowHalfTrickle) answer.sdp = filterTrickle(answer.sdp)
        answer.sdp = this.sdpTransform(answer.sdp)

        const sendAnswer = () => {
          if (this.destroyed) return
          const signal = this._pc.localDescription || answer
          this._debug('signal')
          this.emit('signal', {
            type: signal.type,
            sdp: signal.sdp
          })
          if (!this.initiator) this._requestMissingTransceivers()
        }

        const onSuccess = () => {
          if (this.destroyed) return
          if (this.trickle || this._iceComplete) sendAnswer()
          else this.once('_iceComplete', sendAnswer)
        }

        const onError = err => {
          this.destroy(errCode(err, 'ERR_SET_LOCAL_DESCRIPTION'))
        }

        this._pc.setLocalDescription(answer)
          .then(onSuccess)
          .catch(onError)
      })
      .catch(err => {
        this.destroy(errCode(err, 'ERR_CREATE_ANSWER'))
      })
  }

  _onConnectionStateChange () {
    if (this.destroyed) return
    if (this._pc.connectionState === 'failed') {
      this.destroy(errCode(new Error('Connection failed.'), 'ERR_CONNECTION_FAILURE'))
    }
  }

  _onIceStateChange () {
    if (this.destroyed) return
    const iceConnectionState = this._pc.iceConnectionState
    const iceGatheringState = this._pc.iceGatheringState

    this._debug(
      'iceStateChange (connection: %s) (gathering: %s)',
      iceConnectionState,
      iceGatheringState
    )
    this.emit('iceStateChange', iceConnectionState, iceGatheringState)

    if (iceConnectionState === 'connected' || iceConnectionState === 'completed') {
      this._pcReady = true
      this._maybeReady()
    }
    if (iceConnectionState === 'failed') {
      this.destroy(errCode(new Error('Ice connection failed.'), 'ERR_ICE_CONNECTION_FAILURE'))
    }
    if (iceConnectionState === 'closed') {
      this.destroy(errCode(new Error('Ice connection closed.'), 'ERR_ICE_CONNECTION_CLOSED'))
    }
  }

  getStats (cb) {
    // statreports can come with a value array instead of properties
    const flattenValues = report => {
      if (Object.prototype.toString.call(report.values) === '[object Array]') {
        report.values.forEach(value => {
          Object.assign(report, value)
        })
      }
      return report
    }

    // Promise-based getStats() (standard)
    if (this._pc.getStats.length === 0 || this._isReactNativeWebrtc) {
      this._pc.getStats()
        .then(res => {
          const reports = []
          res.forEach(report => {
            reports.push(flattenValues(report))
          })
          cb(null, reports)
        }, err => cb(err))

    // Single-parameter callback-based getStats() (non-standard)
    } else if (this._pc.getStats.length > 0) {
      this._pc.getStats(res => {
        // If we destroy connection in `connect` callback this code might happen to run when actual connection is already closed
        if (this.destroyed) return

        const reports = []
        res.result().forEach(result => {
          const report = {}
          result.names().forEach(name => {
            report[name] = result.stat(name)
          })
          report.id = result.id
          report.type = result.type
          report.timestamp = result.timestamp
          reports.push(flattenValues(report))
        })
        cb(null, reports)
      }, err => cb(err))

    // Unknown browser, skip getStats() since it's anyone's guess which style of
    // getStats() they implement.
    } else {
      cb(null, [])
    }
  }

  _maybeReady () {
    this._debug('maybeReady pc %s channel %s', this._pcReady, this._channelReady)
    if (this._connected || this._connecting || !this._pcReady || !this._channelReady) return

    this._connecting = true

    // HACK: We can't rely on order here, for details see https://github.com/js-platform/node-webrtc/issues/339
    const findCandidatePair = () => {
      if (this.destroyed) return

      this.getStats((err, items) => {
        if (this.destroyed) return

        // Treat getStats error as non-fatal. It's not essential.
        if (err) items = []

        const remoteCandidates = {}
        const localCandidates = {}
        const candidatePairs = {}
        let foundSelectedCandidatePair = false

        items.forEach(item => {
          // TODO: Once all browsers support the hyphenated stats report types, remove
          // the non-hypenated ones
          if (item.type === 'remotecandidate' || item.type === 'remote-candidate') {
            remoteCandidates[item.id] = item
          }
          if (item.type === 'localcandidate' || item.type === 'local-candidate') {
            localCandidates[item.id] = item
          }
          if (item.type === 'candidatepair' || item.type === 'candidate-pair') {
            candidatePairs[item.id] = item
          }
        })

        const setSelectedCandidatePair = selectedCandidatePair => {
          foundSelectedCandidatePair = true

          let local = localCandidates[selectedCandidatePair.localCandidateId]

          if (local && (local.ip || local.address)) {
            // Spec
            this.localAddress = local.ip || local.address
            this.localPort = Number(local.port)
          } else if (local && local.ipAddress) {
            // Firefox
            this.localAddress = local.ipAddress
            this.localPort = Number(local.portNumber)
          } else if (typeof selectedCandidatePair.googLocalAddress === 'string') {
            // TODO: remove this once Chrome 58 is released
            local = selectedCandidatePair.googLocalAddress.split(':')
            this.localAddress = local[0]
            this.localPort = Number(local[1])
          }
          if (this.localAddress) {
            this.localFamily = this.localAddress.includes(':') ? 'IPv6' : 'IPv4'
          }

          let remote = remoteCandidates[selectedCandidatePair.remoteCandidateId]

          if (remote && (remote.ip || remote.address)) {
            // Spec
            this.remoteAddress = remote.ip || remote.address
            this.remotePort = Number(remote.port)
          } else if (remote && remote.ipAddress) {
            // Firefox
            this.remoteAddress = remote.ipAddress
            this.remotePort = Number(remote.portNumber)
          } else if (typeof selectedCandidatePair.googRemoteAddress === 'string') {
            // TODO: remove this once Chrome 58 is released
            remote = selectedCandidatePair.googRemoteAddress.split(':')
            this.remoteAddress = remote[0]
            this.remotePort = Number(remote[1])
          }
          if (this.remoteAddress) {
            this.remoteFamily = this.remoteAddress.includes(':') ? 'IPv6' : 'IPv4'
          }

          this._debug(
            'connect local: %s:%s remote: %s:%s',
            this.localAddress,
            this.localPort,
            this.remoteAddress,
            this.remotePort
          )
        }

        items.forEach(item => {
          // Spec-compliant
          if (item.type === 'transport' && item.selectedCandidatePairId) {
            setSelectedCandidatePair(candidatePairs[item.selectedCandidatePairId])
          }

          // Old implementations
          if (
            (item.type === 'googCandidatePair' && item.googActiveConnection === 'true') ||
            ((item.type === 'candidatepair' || item.type === 'candidate-pair') && item.selected)
          ) {
            setSelectedCandidatePair(item)
          }
        })

        // Ignore candidate pair selection in browsers like Safari 11 that do not have any local or remote candidates
        // But wait until at least 1 candidate pair is available
        if (!foundSelectedCandidatePair && (!Object.keys(candidatePairs).length || Object.keys(localCandidates).length)) {
          setTimeout(findCandidatePair, 100)
          return
        } else {
          this._connecting = false
          this._connected = true
        }

        if (this._chunk) {
          try {
            this.send(this._chunk)
          } catch (err) {
            return this.destroy(errCode(err, 'ERR_DATA_CHANNEL'))
          }
          this._chunk = null
          this._debug('sent chunk from "write before connect"')

          const cb = this._cb
          this._cb = null
          cb(null)
        }

        // If `bufferedAmountLowThreshold` and 'onbufferedamountlow' are unsupported,
        // fallback to using setInterval to implement backpressure.
        if (typeof this._channel.bufferedAmountLowThreshold !== 'number') {
          this._interval = setInterval(() => this._onInterval(), 150)
          if (this._interval.unref) this._interval.unref()
        }

        this._debug('connect')
        this.emit('connect')
      })
    }
    findCandidatePair()
  }

  _onInterval () {
    if (!this._cb || !this._channel || this._channel.bufferedAmount > MAX_BUFFERED_AMOUNT) {
      return
    }
    this._onChannelBufferedAmountLow()
  }

  _onSignalingStateChange () {
    if (this.destroyed) return

    if (this._pc.signalingState === 'stable') {
      this._isNegotiating = false

      // HACK: Firefox doesn't yet support removing tracks when signalingState !== 'stable'
      this._debug('flushing sender queue', this._sendersAwaitingStable)
      this._sendersAwaitingStable.forEach(sender => {
        this._pc.removeTrack(sender)
        this._queuedNegotiation = true
      })
      this._sendersAwaitingStable = []

      if (this._queuedNegotiation) {
        this._debug('flushing negotiation queue')
        this._queuedNegotiation = false
        this._needsNegotiation() // negotiate again
      } else {
        this._debug('negotiated')
        this.emit('negotiated')
      }
    }

    this._debug('signalingStateChange %s', this._pc.signalingState)
    this.emit('signalingStateChange', this._pc.signalingState)
  }

  _onIceCandidate (event) {
    if (this.destroyed) return
    if (event.candidate && this.trickle) {
      this.emit('signal', {
        type: 'candidate',
        candidate: {
          candidate: event.candidate.candidate,
          sdpMLineIndex: event.candidate.sdpMLineIndex,
          sdpMid: event.candidate.sdpMid
        }
      })
    } else if (!event.candidate && !this._iceComplete) {
      this._iceComplete = true
      this.emit('_iceComplete')
    }
    // as soon as we've received one valid candidate start timeout
    if (event.candidate) {
      this._startIceCompleteTimeout()
    }
  }

  _onChannelMessage (event) {
    if (this.destroyed) return
    let data = event.data
    if (data instanceof ArrayBuffer) data = Buffer.from(data)
    this.push(data)
  }

  _onChannelBufferedAmountLow () {
    if (this.destroyed || !this._cb) return
    this._debug('ending backpressure: bufferedAmount %d', this._channel.bufferedAmount)
    const cb = this._cb
    this._cb = null
    cb(null)
  }

  _onChannelOpen () {
    if (this._connected || this.destroyed) return
    this._debug('on channel open')
    this._channelReady = true
    this._maybeReady()
  }

  _onChannelClose () {
    if (this.destroyed) return
    this._debug('on channel close')
    this.destroy()
  }

  _onTrack (event) {
    if (this.destroyed) return

    event.streams.forEach(eventStream => {
      this._debug('on track')
      this.emit('track', event.track, eventStream)

      this._remoteTracks.push({
        track: event.track,
        stream: eventStream
      })

      if (this._remoteStreams.some(remoteStream => {
        return remoteStream.id === eventStream.id
      })) return // Only fire one 'stream' event, even though there may be multiple tracks per stream

      this._remoteStreams.push(eventStream)
      queueMicrotask(() => {
        this._debug('on stream')
        this.emit('stream', eventStream) // ensure all tracks have been added
      })
    })
  }

  _debug () {
    const args = [].slice.call(arguments)
    args[0] = '[' + this._id + '] ' + args[0]
    debug.apply(null, args)
  }
}

Peer.WEBRTC_SUPPORT = !!getBrowserRTC()

/**
 * Expose peer and data channel config for overriding all Peer
 * instances. Otherwise, just set opts.config or opts.channelConfig
 * when constructing a Peer.
 */
Peer.config = {
  iceServers: [
    {
      urls: [
        'stun:stun.l.google.com:19302',
        'stun:global.stun.twilio.com:3478'
      ]
    }
  ],
  sdpSemantics: 'unified-plan'
}

Peer.channelConfig = {}

module.exports = Peer

},{"buffer":44,"debug":55,"err-code":73,"get-browser-rtc":78,"queue-microtask":126,"randombytes":129,"readable-stream":159}],145:[function(require,module,exports){
'use strict';

function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; subClass.__proto__ = superClass; }

var codes = {};

function createErrorType(code, message, Base) {
  if (!Base) {
    Base = Error;
  }

  function getMessage(arg1, arg2, arg3) {
    if (typeof message === 'string') {
      return message;
    } else {
      return message(arg1, arg2, arg3);
    }
  }

  var NodeError =
  /*#__PURE__*/
  function (_Base) {
    _inheritsLoose(NodeError, _Base);

    function NodeError(arg1, arg2, arg3) {
      return _Base.call(this, getMessage(arg1, arg2, arg3)) || this;
    }

    return NodeError;
  }(Base);

  NodeError.prototype.name = Base.name;
  NodeError.prototype.code = code;
  codes[code] = NodeError;
} // https://github.com/nodejs/node/blob/v10.8.0/lib/internal/errors.js


function oneOf(expected, thing) {
  if (Array.isArray(expected)) {
    var len = expected.length;
    expected = expected.map(function (i) {
      return String(i);
    });

    if (len > 2) {
      return "one of ".concat(thing, " ").concat(expected.slice(0, len - 1).join(', '), ", or ") + expected[len - 1];
    } else if (len === 2) {
      return "one of ".concat(thing, " ").concat(expected[0], " or ").concat(expected[1]);
    } else {
      return "of ".concat(thing, " ").concat(expected[0]);
    }
  } else {
    return "of ".concat(thing, " ").concat(String(expected));
  }
} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith


function startsWith(str, search, pos) {
  return str.substr(!pos || pos < 0 ? 0 : +pos, search.length) === search;
} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/endsWith


function endsWith(str, search, this_len) {
  if (this_len === undefined || this_len > str.length) {
    this_len = str.length;
  }

  return str.substring(this_len - search.length, this_len) === search;
} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/includes


function includes(str, search, start) {
  if (typeof start !== 'number') {
    start = 0;
  }

  if (start + search.length > str.length) {
    return false;
  } else {
    return str.indexOf(search, start) !== -1;
  }
}

createErrorType('ERR_INVALID_OPT_VALUE', function (name, value) {
  return 'The value "' + value + '" is invalid for option "' + name + '"';
}, TypeError);
createErrorType('ERR_INVALID_ARG_TYPE', function (name, expected, actual) {
  // determiner: 'must be' or 'must not be'
  var determiner;

  if (typeof expected === 'string' && startsWith(expected, 'not ')) {
    determiner = 'must not be';
    expected = expected.replace(/^not /, '');
  } else {
    determiner = 'must be';
  }

  var msg;

  if (endsWith(name, ' argument')) {
    // For cases like 'first argument'
    msg = "The ".concat(name, " ").concat(determiner, " ").concat(oneOf(expected, 'type'));
  } else {
    var type = includes(name, '.') ? 'property' : 'argument';
    msg = "The \"".concat(name, "\" ").concat(type, " ").concat(determiner, " ").concat(oneOf(expected, 'type'));
  }

  msg += ". Received type ".concat(typeof actual);
  return msg;
}, TypeError);
createErrorType('ERR_STREAM_PUSH_AFTER_EOF', 'stream.push() after EOF');
createErrorType('ERR_METHOD_NOT_IMPLEMENTED', function (name) {
  return 'The ' + name + ' method is not implemented';
});
createErrorType('ERR_STREAM_PREMATURE_CLOSE', 'Premature close');
createErrorType('ERR_STREAM_DESTROYED', function (name) {
  return 'Cannot call ' + name + ' after a stream was destroyed';
});
createErrorType('ERR_MULTIPLE_CALLBACK', 'Callback called multiple times');
createErrorType('ERR_STREAM_CANNOT_PIPE', 'Cannot pipe, not readable');
createErrorType('ERR_STREAM_WRITE_AFTER_END', 'write after end');
createErrorType('ERR_STREAM_NULL_VALUES', 'May not write null values to stream', TypeError);
createErrorType('ERR_UNKNOWN_ENCODING', function (arg) {
  return 'Unknown encoding: ' + arg;
}, TypeError);
createErrorType('ERR_STREAM_UNSHIFT_AFTER_END_EVENT', 'stream.unshift() after end event');
module.exports.codes = codes;

},{}],146:[function(require,module,exports){
(function (process){(function (){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.
'use strict';
/*<replacement>*/

var objectKeys = Object.keys || function (obj) {
  var keys = [];

  for (var key in obj) {
    keys.push(key);
  }

  return keys;
};
/*</replacement>*/


module.exports = Duplex;

var Readable = require('./_stream_readable');

var Writable = require('./_stream_writable');

require('inherits')(Duplex, Readable);

{
  // Allow the keys array to be GC'ed.
  var keys = objectKeys(Writable.prototype);

  for (var v = 0; v < keys.length; v++) {
    var method = keys[v];
    if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
  }
}

function Duplex(options) {
  if (!(this instanceof Duplex)) return new Duplex(options);
  Readable.call(this, options);
  Writable.call(this, options);
  this.allowHalfOpen = true;

  if (options) {
    if (options.readable === false) this.readable = false;
    if (options.writable === false) this.writable = false;

    if (options.allowHalfOpen === false) {
      this.allowHalfOpen = false;
      this.once('end', onend);
    }
  }
}

Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    return this._writableState.highWaterMark;
  }
});
Object.defineProperty(Duplex.prototype, 'writableBuffer', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    return this._writableState && this._writableState.getBuffer();
  }
});
Object.defineProperty(Duplex.prototype, 'writableLength', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    return this._writableState.length;
  }
}); // the no-half-open enforcer

function onend() {
  // If the writable side ended, then we're ok.
  if (this._writableState.ended) return; // no more data can be written.
  // But allow more writes to happen in this tick.

  process.nextTick(onEndNT, this);
}

function onEndNT(self) {
  self.end();
}

Object.defineProperty(Duplex.prototype, 'destroyed', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    if (this._readableState === undefined || this._writableState === undefined) {
      return false;
    }

    return this._readableState.destroyed && this._writableState.destroyed;
  },
  set: function set(value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (this._readableState === undefined || this._writableState === undefined) {
      return;
    } // backward compatibility, the user is explicitly
    // managing destroyed


    this._readableState.destroyed = value;
    this._writableState.destroyed = value;
  }
});
}).call(this)}).call(this,require('_process'))
},{"./_stream_readable":148,"./_stream_writable":150,"_process":120,"inherits":85}],147:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a passthrough stream.
// basically just the most minimal sort of Transform stream.
// Every written chunk gets output as-is.
'use strict';

module.exports = PassThrough;

var Transform = require('./_stream_transform');

require('inherits')(PassThrough, Transform);

function PassThrough(options) {
  if (!(this instanceof PassThrough)) return new PassThrough(options);
  Transform.call(this, options);
}

PassThrough.prototype._transform = function (chunk, encoding, cb) {
  cb(null, chunk);
};
},{"./_stream_transform":149,"inherits":85}],148:[function(require,module,exports){
(function (process,global){(function (){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';

module.exports = Readable;
/*<replacement>*/

var Duplex;
/*</replacement>*/

Readable.ReadableState = ReadableState;
/*<replacement>*/

var EE = require('events').EventEmitter;

var EElistenerCount = function EElistenerCount(emitter, type) {
  return emitter.listeners(type).length;
};
/*</replacement>*/

/*<replacement>*/


var Stream = require('./internal/streams/stream');
/*</replacement>*/


var Buffer = require('buffer').Buffer;

var OurUint8Array = global.Uint8Array || function () {};

function _uint8ArrayToBuffer(chunk) {
  return Buffer.from(chunk);
}

function _isUint8Array(obj) {
  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}
/*<replacement>*/


var debugUtil = require('util');

var debug;

if (debugUtil && debugUtil.debuglog) {
  debug = debugUtil.debuglog('stream');
} else {
  debug = function debug() {};
}
/*</replacement>*/


var BufferList = require('./internal/streams/buffer_list');

var destroyImpl = require('./internal/streams/destroy');

var _require = require('./internal/streams/state'),
    getHighWaterMark = _require.getHighWaterMark;

var _require$codes = require('../errors').codes,
    ERR_INVALID_ARG_TYPE = _require$codes.ERR_INVALID_ARG_TYPE,
    ERR_STREAM_PUSH_AFTER_EOF = _require$codes.ERR_STREAM_PUSH_AFTER_EOF,
    ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED,
    ERR_STREAM_UNSHIFT_AFTER_END_EVENT = _require$codes.ERR_STREAM_UNSHIFT_AFTER_END_EVENT; // Lazy loaded to improve the startup performance.


var StringDecoder;
var createReadableStreamAsyncIterator;
var from;

require('inherits')(Readable, Stream);

var errorOrDestroy = destroyImpl.errorOrDestroy;
var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume'];

function prependListener(emitter, event, fn) {
  // Sadly this is not cacheable as some libraries bundle their own
  // event emitter implementation with them.
  if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn); // This is a hack to make sure that our error handler is attached before any
  // userland ones.  NEVER DO THIS. This is here only because this code needs
  // to continue to work with older versions of Node.js that do not include
  // the prependListener() method. The goal is to eventually remove this hack.

  if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (Array.isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
}

function ReadableState(options, stream, isDuplex) {
  Duplex = Duplex || require('./_stream_duplex');
  options = options || {}; // Duplex streams are both readable and writable, but share
  // the same options object.
  // However, some cases require setting options to different
  // values for the readable and the writable sides of the duplex stream.
  // These options can be provided separately as readableXXX and writableXXX.

  if (typeof isDuplex !== 'boolean') isDuplex = stream instanceof Duplex; // object stream flag. Used to make read(n) ignore n and to
  // make all the buffer merging and length checks go away

  this.objectMode = !!options.objectMode;
  if (isDuplex) this.objectMode = this.objectMode || !!options.readableObjectMode; // the point at which it stops calling _read() to fill the buffer
  // Note: 0 is a valid value, means "don't call _read preemptively ever"

  this.highWaterMark = getHighWaterMark(this, options, 'readableHighWaterMark', isDuplex); // A linked list is used to store data chunks instead of an array because the
  // linked list can remove elements from the beginning faster than
  // array.shift()

  this.buffer = new BufferList();
  this.length = 0;
  this.pipes = null;
  this.pipesCount = 0;
  this.flowing = null;
  this.ended = false;
  this.endEmitted = false;
  this.reading = false; // a flag to be able to tell if the event 'readable'/'data' is emitted
  // immediately, or on a later tick.  We set this to true at first, because
  // any actions that shouldn't happen until "later" should generally also
  // not happen before the first read call.

  this.sync = true; // whenever we return null, then we set a flag to say
  // that we're awaiting a 'readable' event emission.

  this.needReadable = false;
  this.emittedReadable = false;
  this.readableListening = false;
  this.resumeScheduled = false;
  this.paused = true; // Should close be emitted on destroy. Defaults to true.

  this.emitClose = options.emitClose !== false; // Should .destroy() be called after 'end' (and potentially 'finish')

  this.autoDestroy = !!options.autoDestroy; // has it been destroyed

  this.destroyed = false; // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.

  this.defaultEncoding = options.defaultEncoding || 'utf8'; // the number of writers that are awaiting a drain event in .pipe()s

  this.awaitDrain = 0; // if true, a maybeReadMore has been scheduled

  this.readingMore = false;
  this.decoder = null;
  this.encoding = null;

  if (options.encoding) {
    if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
    this.decoder = new StringDecoder(options.encoding);
    this.encoding = options.encoding;
  }
}

function Readable(options) {
  Duplex = Duplex || require('./_stream_duplex');
  if (!(this instanceof Readable)) return new Readable(options); // Checking for a Stream.Duplex instance is faster here instead of inside
  // the ReadableState constructor, at least with V8 6.5

  var isDuplex = this instanceof Duplex;
  this._readableState = new ReadableState(options, this, isDuplex); // legacy

  this.readable = true;

  if (options) {
    if (typeof options.read === 'function') this._read = options.read;
    if (typeof options.destroy === 'function') this._destroy = options.destroy;
  }

  Stream.call(this);
}

Object.defineProperty(Readable.prototype, 'destroyed', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    if (this._readableState === undefined) {
      return false;
    }

    return this._readableState.destroyed;
  },
  set: function set(value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (!this._readableState) {
      return;
    } // backward compatibility, the user is explicitly
    // managing destroyed


    this._readableState.destroyed = value;
  }
});
Readable.prototype.destroy = destroyImpl.destroy;
Readable.prototype._undestroy = destroyImpl.undestroy;

Readable.prototype._destroy = function (err, cb) {
  cb(err);
}; // Manually shove something into the read() buffer.
// This returns true if the highWaterMark has not been hit yet,
// similar to how Writable.write() returns true if you should
// write() some more.


Readable.prototype.push = function (chunk, encoding) {
  var state = this._readableState;
  var skipChunkCheck;

  if (!state.objectMode) {
    if (typeof chunk === 'string') {
      encoding = encoding || state.defaultEncoding;

      if (encoding !== state.encoding) {
        chunk = Buffer.from(chunk, encoding);
        encoding = '';
      }

      skipChunkCheck = true;
    }
  } else {
    skipChunkCheck = true;
  }

  return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);
}; // Unshift should *always* be something directly out of read()


Readable.prototype.unshift = function (chunk) {
  return readableAddChunk(this, chunk, null, true, false);
};

function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
  debug('readableAddChunk', chunk);
  var state = stream._readableState;

  if (chunk === null) {
    state.reading = false;
    onEofChunk(stream, state);
  } else {
    var er;
    if (!skipChunkCheck) er = chunkInvalid(state, chunk);

    if (er) {
      errorOrDestroy(stream, er);
    } else if (state.objectMode || chunk && chunk.length > 0) {
      if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) {
        chunk = _uint8ArrayToBuffer(chunk);
      }

      if (addToFront) {
        if (state.endEmitted) errorOrDestroy(stream, new ERR_STREAM_UNSHIFT_AFTER_END_EVENT());else addChunk(stream, state, chunk, true);
      } else if (state.ended) {
        errorOrDestroy(stream, new ERR_STREAM_PUSH_AFTER_EOF());
      } else if (state.destroyed) {
        return false;
      } else {
        state.reading = false;

        if (state.decoder && !encoding) {
          chunk = state.decoder.write(chunk);
          if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state);
        } else {
          addChunk(stream, state, chunk, false);
        }
      }
    } else if (!addToFront) {
      state.reading = false;
      maybeReadMore(stream, state);
    }
  } // We can push more data if we are below the highWaterMark.
  // Also, if we have no data yet, we can stand some more bytes.
  // This is to work around cases where hwm=0, such as the repl.


  return !state.ended && (state.length < state.highWaterMark || state.length === 0);
}

function addChunk(stream, state, chunk, addToFront) {
  if (state.flowing && state.length === 0 && !state.sync) {
    state.awaitDrain = 0;
    stream.emit('data', chunk);
  } else {
    // update the buffer info.
    state.length += state.objectMode ? 1 : chunk.length;
    if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);
    if (state.needReadable) emitReadable(stream);
  }

  maybeReadMore(stream, state);
}

function chunkInvalid(state, chunk) {
  var er;

  if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
    er = new ERR_INVALID_ARG_TYPE('chunk', ['string', 'Buffer', 'Uint8Array'], chunk);
  }

  return er;
}

Readable.prototype.isPaused = function () {
  return this._readableState.flowing === false;
}; // backwards compatibility.


Readable.prototype.setEncoding = function (enc) {
  if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
  var decoder = new StringDecoder(enc);
  this._readableState.decoder = decoder; // If setEncoding(null), decoder.encoding equals utf8

  this._readableState.encoding = this._readableState.decoder.encoding; // Iterate over current buffer to convert already stored Buffers:

  var p = this._readableState.buffer.head;
  var content = '';

  while (p !== null) {
    content += decoder.write(p.data);
    p = p.next;
  }

  this._readableState.buffer.clear();

  if (content !== '') this._readableState.buffer.push(content);
  this._readableState.length = content.length;
  return this;
}; // Don't raise the hwm > 1GB


var MAX_HWM = 0x40000000;

function computeNewHighWaterMark(n) {
  if (n >= MAX_HWM) {
    // TODO(ronag): Throw ERR_VALUE_OUT_OF_RANGE.
    n = MAX_HWM;
  } else {
    // Get the next highest power of 2 to prevent increasing hwm excessively in
    // tiny amounts
    n--;
    n |= n >>> 1;
    n |= n >>> 2;
    n |= n >>> 4;
    n |= n >>> 8;
    n |= n >>> 16;
    n++;
  }

  return n;
} // This function is designed to be inlinable, so please take care when making
// changes to the function body.


function howMuchToRead(n, state) {
  if (n <= 0 || state.length === 0 && state.ended) return 0;
  if (state.objectMode) return 1;

  if (n !== n) {
    // Only flow one buffer at a time
    if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;
  } // If we're asking for more than the current hwm, then raise the hwm.


  if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);
  if (n <= state.length) return n; // Don't have enough

  if (!state.ended) {
    state.needReadable = true;
    return 0;
  }

  return state.length;
} // you can override either this method, or the async _read(n) below.


Readable.prototype.read = function (n) {
  debug('read', n);
  n = parseInt(n, 10);
  var state = this._readableState;
  var nOrig = n;
  if (n !== 0) state.emittedReadable = false; // if we're doing read(0) to trigger a readable event, but we
  // already have a bunch of data in the buffer, then just trigger
  // the 'readable' event and move on.

  if (n === 0 && state.needReadable && ((state.highWaterMark !== 0 ? state.length >= state.highWaterMark : state.length > 0) || state.ended)) {
    debug('read: emitReadable', state.length, state.ended);
    if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);
    return null;
  }

  n = howMuchToRead(n, state); // if we've ended, and we're now clear, then finish it up.

  if (n === 0 && state.ended) {
    if (state.length === 0) endReadable(this);
    return null;
  } // All the actual chunk generation logic needs to be
  // *below* the call to _read.  The reason is that in certain
  // synthetic stream cases, such as passthrough streams, _read
  // may be a completely synchronous operation which may change
  // the state of the read buffer, providing enough data when
  // before there was *not* enough.
  //
  // So, the steps are:
  // 1. Figure out what the state of things will be after we do
  // a read from the buffer.
  //
  // 2. If that resulting state will trigger a _read, then call _read.
  // Note that this may be asynchronous, or synchronous.  Yes, it is
  // deeply ugly to write APIs this way, but that still doesn't mean
  // that the Readable class should behave improperly, as streams are
  // designed to be sync/async agnostic.
  // Take note if the _read call is sync or async (ie, if the read call
  // has returned yet), so that we know whether or not it's safe to emit
  // 'readable' etc.
  //
  // 3. Actually pull the requested chunks out of the buffer and return.
  // if we need a readable event, then we need to do some reading.


  var doRead = state.needReadable;
  debug('need readable', doRead); // if we currently have less than the highWaterMark, then also read some

  if (state.length === 0 || state.length - n < state.highWaterMark) {
    doRead = true;
    debug('length less than watermark', doRead);
  } // however, if we've ended, then there's no point, and if we're already
  // reading, then it's unnecessary.


  if (state.ended || state.reading) {
    doRead = false;
    debug('reading or ended', doRead);
  } else if (doRead) {
    debug('do read');
    state.reading = true;
    state.sync = true; // if the length is currently zero, then we *need* a readable event.

    if (state.length === 0) state.needReadable = true; // call internal read method

    this._read(state.highWaterMark);

    state.sync = false; // If _read pushed data synchronously, then `reading` will be false,
    // and we need to re-evaluate how much data we can return to the user.

    if (!state.reading) n = howMuchToRead(nOrig, state);
  }

  var ret;
  if (n > 0) ret = fromList(n, state);else ret = null;

  if (ret === null) {
    state.needReadable = state.length <= state.highWaterMark;
    n = 0;
  } else {
    state.length -= n;
    state.awaitDrain = 0;
  }

  if (state.length === 0) {
    // If we have nothing in the buffer, then we want to know
    // as soon as we *do* get something into the buffer.
    if (!state.ended) state.needReadable = true; // If we tried to read() past the EOF, then emit end on the next tick.

    if (nOrig !== n && state.ended) endReadable(this);
  }

  if (ret !== null) this.emit('data', ret);
  return ret;
};

function onEofChunk(stream, state) {
  debug('onEofChunk');
  if (state.ended) return;

  if (state.decoder) {
    var chunk = state.decoder.end();

    if (chunk && chunk.length) {
      state.buffer.push(chunk);
      state.length += state.objectMode ? 1 : chunk.length;
    }
  }

  state.ended = true;

  if (state.sync) {
    // if we are sync, wait until next tick to emit the data.
    // Otherwise we risk emitting data in the flow()
    // the readable code triggers during a read() call
    emitReadable(stream);
  } else {
    // emit 'readable' now to make sure it gets picked up.
    state.needReadable = false;

    if (!state.emittedReadable) {
      state.emittedReadable = true;
      emitReadable_(stream);
    }
  }
} // Don't emit readable right away in sync mode, because this can trigger
// another read() call => stack overflow.  This way, it might trigger
// a nextTick recursion warning, but that's not so bad.


function emitReadable(stream) {
  var state = stream._readableState;
  debug('emitReadable', state.needReadable, state.emittedReadable);
  state.needReadable = false;

  if (!state.emittedReadable) {
    debug('emitReadable', state.flowing);
    state.emittedReadable = true;
    process.nextTick(emitReadable_, stream);
  }
}

function emitReadable_(stream) {
  var state = stream._readableState;
  debug('emitReadable_', state.destroyed, state.length, state.ended);

  if (!state.destroyed && (state.length || state.ended)) {
    stream.emit('readable');
    state.emittedReadable = false;
  } // The stream needs another readable event if
  // 1. It is not flowing, as the flow mechanism will take
  //    care of it.
  // 2. It is not ended.
  // 3. It is below the highWaterMark, so we can schedule
  //    another readable later.


  state.needReadable = !state.flowing && !state.ended && state.length <= state.highWaterMark;
  flow(stream);
} // at this point, the user has presumably seen the 'readable' event,
// and called read() to consume some data.  that may have triggered
// in turn another _read(n) call, in which case reading = true if
// it's in progress.
// However, if we're not ended, or reading, and the length < hwm,
// then go ahead and try to read some more preemptively.


function maybeReadMore(stream, state) {
  if (!state.readingMore) {
    state.readingMore = true;
    process.nextTick(maybeReadMore_, stream, state);
  }
}

function maybeReadMore_(stream, state) {
  // Attempt to read more data if we should.
  //
  // The conditions for reading more data are (one of):
  // - Not enough data buffered (state.length < state.highWaterMark). The loop
  //   is responsible for filling the buffer with enough data if such data
  //   is available. If highWaterMark is 0 and we are not in the flowing mode
  //   we should _not_ attempt to buffer any extra data. We'll get more data
  //   when the stream consumer calls read() instead.
  // - No data in the buffer, and the stream is in flowing mode. In this mode
  //   the loop below is responsible for ensuring read() is called. Failing to
  //   call read here would abort the flow and there's no other mechanism for
  //   continuing the flow if the stream consumer has just subscribed to the
  //   'data' event.
  //
  // In addition to the above conditions to keep reading data, the following
  // conditions prevent the data from being read:
  // - The stream has ended (state.ended).
  // - There is already a pending 'read' operation (state.reading). This is a
  //   case where the the stream has called the implementation defined _read()
  //   method, but they are processing the call asynchronously and have _not_
  //   called push() with new data. In this case we skip performing more
  //   read()s. The execution ends in this method again after the _read() ends
  //   up calling push() with more data.
  while (!state.reading && !state.ended && (state.length < state.highWaterMark || state.flowing && state.length === 0)) {
    var len = state.length;
    debug('maybeReadMore read 0');
    stream.read(0);
    if (len === state.length) // didn't get any data, stop spinning.
      break;
  }

  state.readingMore = false;
} // abstract method.  to be overridden in specific implementation classes.
// call cb(er, data) where data is <= n in length.
// for virtual (non-string, non-buffer) streams, "length" is somewhat
// arbitrary, and perhaps not very meaningful.


Readable.prototype._read = function (n) {
  errorOrDestroy(this, new ERR_METHOD_NOT_IMPLEMENTED('_read()'));
};

Readable.prototype.pipe = function (dest, pipeOpts) {
  var src = this;
  var state = this._readableState;

  switch (state.pipesCount) {
    case 0:
      state.pipes = dest;
      break;

    case 1:
      state.pipes = [state.pipes, dest];
      break;

    default:
      state.pipes.push(dest);
      break;
  }

  state.pipesCount += 1;
  debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);
  var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;
  var endFn = doEnd ? onend : unpipe;
  if (state.endEmitted) process.nextTick(endFn);else src.once('end', endFn);
  dest.on('unpipe', onunpipe);

  function onunpipe(readable, unpipeInfo) {
    debug('onunpipe');

    if (readable === src) {
      if (unpipeInfo && unpipeInfo.hasUnpiped === false) {
        unpipeInfo.hasUnpiped = true;
        cleanup();
      }
    }
  }

  function onend() {
    debug('onend');
    dest.end();
  } // when the dest drains, it reduces the awaitDrain counter
  // on the source.  This would be more elegant with a .once()
  // handler in flow(), but adding and removing repeatedly is
  // too slow.


  var ondrain = pipeOnDrain(src);
  dest.on('drain', ondrain);
  var cleanedUp = false;

  function cleanup() {
    debug('cleanup'); // cleanup event handlers once the pipe is broken

    dest.removeListener('close', onclose);
    dest.removeListener('finish', onfinish);
    dest.removeListener('drain', ondrain);
    dest.removeListener('error', onerror);
    dest.removeListener('unpipe', onunpipe);
    src.removeListener('end', onend);
    src.removeListener('end', unpipe);
    src.removeListener('data', ondata);
    cleanedUp = true; // if the reader is waiting for a drain event from this
    // specific writer, then it would cause it to never start
    // flowing again.
    // So, if this is awaiting a drain, then we just call it now.
    // If we don't know, then assume that we are waiting for one.

    if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
  }

  src.on('data', ondata);

  function ondata(chunk) {
    debug('ondata');
    var ret = dest.write(chunk);
    debug('dest.write', ret);

    if (ret === false) {
      // If the user unpiped during `dest.write()`, it is possible
      // to get stuck in a permanently paused state if that write
      // also returned false.
      // => Check whether `dest` is still a piping destination.
      if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
        debug('false write response, pause', state.awaitDrain);
        state.awaitDrain++;
      }

      src.pause();
    }
  } // if the dest has an error, then stop piping into it.
  // however, don't suppress the throwing behavior for this.


  function onerror(er) {
    debug('onerror', er);
    unpipe();
    dest.removeListener('error', onerror);
    if (EElistenerCount(dest, 'error') === 0) errorOrDestroy(dest, er);
  } // Make sure our error handler is attached before userland ones.


  prependListener(dest, 'error', onerror); // Both close and finish should trigger unpipe, but only once.

  function onclose() {
    dest.removeListener('finish', onfinish);
    unpipe();
  }

  dest.once('close', onclose);

  function onfinish() {
    debug('onfinish');
    dest.removeListener('close', onclose);
    unpipe();
  }

  dest.once('finish', onfinish);

  function unpipe() {
    debug('unpipe');
    src.unpipe(dest);
  } // tell the dest that it's being piped to


  dest.emit('pipe', src); // start the flow if it hasn't been started already.

  if (!state.flowing) {
    debug('pipe resume');
    src.resume();
  }

  return dest;
};

function pipeOnDrain(src) {
  return function pipeOnDrainFunctionResult() {
    var state = src._readableState;
    debug('pipeOnDrain', state.awaitDrain);
    if (state.awaitDrain) state.awaitDrain--;

    if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
      state.flowing = true;
      flow(src);
    }
  };
}

Readable.prototype.unpipe = function (dest) {
  var state = this._readableState;
  var unpipeInfo = {
    hasUnpiped: false
  }; // if we're not piping anywhere, then do nothing.

  if (state.pipesCount === 0) return this; // just one destination.  most common case.

  if (state.pipesCount === 1) {
    // passed in one, but it's not the right one.
    if (dest && dest !== state.pipes) return this;
    if (!dest) dest = state.pipes; // got a match.

    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;
    if (dest) dest.emit('unpipe', this, unpipeInfo);
    return this;
  } // slow case. multiple pipe destinations.


  if (!dest) {
    // remove all.
    var dests = state.pipes;
    var len = state.pipesCount;
    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;

    for (var i = 0; i < len; i++) {
      dests[i].emit('unpipe', this, {
        hasUnpiped: false
      });
    }

    return this;
  } // try to find the right one.


  var index = indexOf(state.pipes, dest);
  if (index === -1) return this;
  state.pipes.splice(index, 1);
  state.pipesCount -= 1;
  if (state.pipesCount === 1) state.pipes = state.pipes[0];
  dest.emit('unpipe', this, unpipeInfo);
  return this;
}; // set up data events if they are asked for
// Ensure readable listeners eventually get something


Readable.prototype.on = function (ev, fn) {
  var res = Stream.prototype.on.call(this, ev, fn);
  var state = this._readableState;

  if (ev === 'data') {
    // update readableListening so that resume() may be a no-op
    // a few lines down. This is needed to support once('readable').
    state.readableListening = this.listenerCount('readable') > 0; // Try start flowing on next tick if stream isn't explicitly paused

    if (state.flowing !== false) this.resume();
  } else if (ev === 'readable') {
    if (!state.endEmitted && !state.readableListening) {
      state.readableListening = state.needReadable = true;
      state.flowing = false;
      state.emittedReadable = false;
      debug('on readable', state.length, state.reading);

      if (state.length) {
        emitReadable(this);
      } else if (!state.reading) {
        process.nextTick(nReadingNextTick, this);
      }
    }
  }

  return res;
};

Readable.prototype.addListener = Readable.prototype.on;

Readable.prototype.removeListener = function (ev, fn) {
  var res = Stream.prototype.removeListener.call(this, ev, fn);

  if (ev === 'readable') {
    // We need to check if there is someone still listening to
    // readable and reset the state. However this needs to happen
    // after readable has been emitted but before I/O (nextTick) to
    // support once('readable', fn) cycles. This means that calling
    // resume within the same tick will have no
    // effect.
    process.nextTick(updateReadableListening, this);
  }

  return res;
};

Readable.prototype.removeAllListeners = function (ev) {
  var res = Stream.prototype.removeAllListeners.apply(this, arguments);

  if (ev === 'readable' || ev === undefined) {
    // We need to check if there is someone still listening to
    // readable and reset the state. However this needs to happen
    // after readable has been emitted but before I/O (nextTick) to
    // support once('readable', fn) cycles. This means that calling
    // resume within the same tick will have no
    // effect.
    process.nextTick(updateReadableListening, this);
  }

  return res;
};

function updateReadableListening(self) {
  var state = self._readableState;
  state.readableListening = self.listenerCount('readable') > 0;

  if (state.resumeScheduled && !state.paused) {
    // flowing needs to be set to true now, otherwise
    // the upcoming resume will not flow.
    state.flowing = true; // crude way to check if we should resume
  } else if (self.listenerCount('data') > 0) {
    self.resume();
  }
}

function nReadingNextTick(self) {
  debug('readable nexttick read 0');
  self.read(0);
} // pause() and resume() are remnants of the legacy readable stream API
// If the user uses them, then switch into old mode.


Readable.prototype.resume = function () {
  var state = this._readableState;

  if (!state.flowing) {
    debug('resume'); // we flow only if there is no one listening
    // for readable, but we still have to call
    // resume()

    state.flowing = !state.readableListening;
    resume(this, state);
  }

  state.paused = false;
  return this;
};

function resume(stream, state) {
  if (!state.resumeScheduled) {
    state.resumeScheduled = true;
    process.nextTick(resume_, stream, state);
  }
}

function resume_(stream, state) {
  debug('resume', state.reading);

  if (!state.reading) {
    stream.read(0);
  }

  state.resumeScheduled = false;
  stream.emit('resume');
  flow(stream);
  if (state.flowing && !state.reading) stream.read(0);
}

Readable.prototype.pause = function () {
  debug('call pause flowing=%j', this._readableState.flowing);

  if (this._readableState.flowing !== false) {
    debug('pause');
    this._readableState.flowing = false;
    this.emit('pause');
  }

  this._readableState.paused = true;
  return this;
};

function flow(stream) {
  var state = stream._readableState;
  debug('flow', state.flowing);

  while (state.flowing && stream.read() !== null) {
    ;
  }
} // wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.


Readable.prototype.wrap = function (stream) {
  var _this = this;

  var state = this._readableState;
  var paused = false;
  stream.on('end', function () {
    debug('wrapped end');

    if (state.decoder && !state.ended) {
      var chunk = state.decoder.end();
      if (chunk && chunk.length) _this.push(chunk);
    }

    _this.push(null);
  });
  stream.on('data', function (chunk) {
    debug('wrapped data');
    if (state.decoder) chunk = state.decoder.write(chunk); // don't skip over falsy values in objectMode

    if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;

    var ret = _this.push(chunk);

    if (!ret) {
      paused = true;
      stream.pause();
    }
  }); // proxy all the other methods.
  // important when wrapping filters and duplexes.

  for (var i in stream) {
    if (this[i] === undefined && typeof stream[i] === 'function') {
      this[i] = function methodWrap(method) {
        return function methodWrapReturnFunction() {
          return stream[method].apply(stream, arguments);
        };
      }(i);
    }
  } // proxy certain important events.


  for (var n = 0; n < kProxyEvents.length; n++) {
    stream.on(kProxyEvents[n], this.emit.bind(this, kProxyEvents[n]));
  } // when we try to consume some more bytes, simply unpause the
  // underlying stream.


  this._read = function (n) {
    debug('wrapped _read', n);

    if (paused) {
      paused = false;
      stream.resume();
    }
  };

  return this;
};

if (typeof Symbol === 'function') {
  Readable.prototype[Symbol.asyncIterator] = function () {
    if (createReadableStreamAsyncIterator === undefined) {
      createReadableStreamAsyncIterator = require('./internal/streams/async_iterator');
    }

    return createReadableStreamAsyncIterator(this);
  };
}

Object.defineProperty(Readable.prototype, 'readableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    return this._readableState.highWaterMark;
  }
});
Object.defineProperty(Readable.prototype, 'readableBuffer', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    return this._readableState && this._readableState.buffer;
  }
});
Object.defineProperty(Readable.prototype, 'readableFlowing', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    return this._readableState.flowing;
  },
  set: function set(state) {
    if (this._readableState) {
      this._readableState.flowing = state;
    }
  }
}); // exposed for testing purposes only.

Readable._fromList = fromList;
Object.defineProperty(Readable.prototype, 'readableLength', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    return this._readableState.length;
  }
}); // Pluck off n bytes from an array of buffers.
// Length is the combined lengths of all the buffers in the list.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.

function fromList(n, state) {
  // nothing buffered
  if (state.length === 0) return null;
  var ret;
  if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
    // read it all, truncate the list
    if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.first();else ret = state.buffer.concat(state.length);
    state.buffer.clear();
  } else {
    // read part of list
    ret = state.buffer.consume(n, state.decoder);
  }
  return ret;
}

function endReadable(stream) {
  var state = stream._readableState;
  debug('endReadable', state.endEmitted);

  if (!state.endEmitted) {
    state.ended = true;
    process.nextTick(endReadableNT, state, stream);
  }
}

function endReadableNT(state, stream) {
  debug('endReadableNT', state.endEmitted, state.length); // Check that we didn't get one last unshift.

  if (!state.endEmitted && state.length === 0) {
    state.endEmitted = true;
    stream.readable = false;
    stream.emit('end');

    if (state.autoDestroy) {
      // In case of duplex streams we need a way to detect
      // if the writable side is ready for autoDestroy as well
      var wState = stream._writableState;

      if (!wState || wState.autoDestroy && wState.finished) {
        stream.destroy();
      }
    }
  }
}

if (typeof Symbol === 'function') {
  Readable.from = function (iterable, opts) {
    if (from === undefined) {
      from = require('./internal/streams/from');
    }

    return from(Readable, iterable, opts);
  };
}

function indexOf(xs, x) {
  for (var i = 0, l = xs.length; i < l; i++) {
    if (xs[i] === x) return i;
  }

  return -1;
}
}).call(this)}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../errors":145,"./_stream_duplex":146,"./internal/streams/async_iterator":151,"./internal/streams/buffer_list":152,"./internal/streams/destroy":153,"./internal/streams/from":155,"./internal/streams/state":157,"./internal/streams/stream":158,"_process":120,"buffer":44,"events":74,"inherits":85,"string_decoder/":168,"util":43}],149:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a transform stream is a readable/writable stream where you do
// something with the data.  Sometimes it's called a "filter",
// but that's not a great name for it, since that implies a thing where
// some bits pass through, and others are simply ignored.  (That would
// be a valid example of a transform, of course.)
//
// While the output is causally related to the input, it's not a
// necessarily symmetric or synchronous transformation.  For example,
// a zlib stream might take multiple plain-text writes(), and then
// emit a single compressed chunk some time in the future.
//
// Here's how this works:
//
// The Transform stream has all the aspects of the readable and writable
// stream classes.  When you write(chunk), that calls _write(chunk,cb)
// internally, and returns false if there's a lot of pending writes
// buffered up.  When you call read(), that calls _read(n) until
// there's enough pending readable data buffered up.
//
// In a transform stream, the written data is placed in a buffer.  When
// _read(n) is called, it transforms the queued up data, calling the
// buffered _write cb's as it consumes chunks.  If consuming a single
// written chunk would result in multiple output chunks, then the first
// outputted bit calls the readcb, and subsequent chunks just go into
// the read buffer, and will cause it to emit 'readable' if necessary.
//
// This way, back-pressure is actually determined by the reading side,
// since _read has to be called to start processing a new chunk.  However,
// a pathological inflate type of transform can cause excessive buffering
// here.  For example, imagine a stream where every byte of input is
// interpreted as an integer from 0-255, and then results in that many
// bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in
// 1kb of data being output.  In this case, you could write a very small
// amount of input, and end up with a very large amount of output.  In
// such a pathological inflating mechanism, there'd be no way to tell
// the system to stop doing the transform.  A single 4MB write could
// cause the system to run out of memory.
//
// However, even in such a pathological case, only a single written chunk
// would be consumed, and then the rest would wait (un-transformed) until
// the results of the previous transformed chunk were consumed.
'use strict';

module.exports = Transform;

var _require$codes = require('../errors').codes,
    ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED,
    ERR_MULTIPLE_CALLBACK = _require$codes.ERR_MULTIPLE_CALLBACK,
    ERR_TRANSFORM_ALREADY_TRANSFORMING = _require$codes.ERR_TRANSFORM_ALREADY_TRANSFORMING,
    ERR_TRANSFORM_WITH_LENGTH_0 = _require$codes.ERR_TRANSFORM_WITH_LENGTH_0;

var Duplex = require('./_stream_duplex');

require('inherits')(Transform, Duplex);

function afterTransform(er, data) {
  var ts = this._transformState;
  ts.transforming = false;
  var cb = ts.writecb;

  if (cb === null) {
    return this.emit('error', new ERR_MULTIPLE_CALLBACK());
  }

  ts.writechunk = null;
  ts.writecb = null;
  if (data != null) // single equals check for both `null` and `undefined`
    this.push(data);
  cb(er);
  var rs = this._readableState;
  rs.reading = false;

  if (rs.needReadable || rs.length < rs.highWaterMark) {
    this._read(rs.highWaterMark);
  }
}

function Transform(options) {
  if (!(this instanceof Transform)) return new Transform(options);
  Duplex.call(this, options);
  this._transformState = {
    afterTransform: afterTransform.bind(this),
    needTransform: false,
    transforming: false,
    writecb: null,
    writechunk: null,
    writeencoding: null
  }; // start out asking for a readable event once data is transformed.

  this._readableState.needReadable = true; // we have implemented the _read method, and done the other things
  // that Readable wants before the first _read call, so unset the
  // sync guard flag.

  this._readableState.sync = false;

  if (options) {
    if (typeof options.transform === 'function') this._transform = options.transform;
    if (typeof options.flush === 'function') this._flush = options.flush;
  } // When the writable side finishes, then flush out anything remaining.


  this.on('prefinish', prefinish);
}

function prefinish() {
  var _this = this;

  if (typeof this._flush === 'function' && !this._readableState.destroyed) {
    this._flush(function (er, data) {
      done(_this, er, data);
    });
  } else {
    done(this, null, null);
  }
}

Transform.prototype.push = function (chunk, encoding) {
  this._transformState.needTransform = false;
  return Duplex.prototype.push.call(this, chunk, encoding);
}; // This is the part where you do stuff!
// override this function in implementation classes.
// 'chunk' is an input chunk.
//
// Call `push(newChunk)` to pass along transformed output
// to the readable side.  You may call 'push' zero or more times.
//
// Call `cb(err)` when you are done with this chunk.  If you pass
// an error, then that'll put the hurt on the whole operation.  If you
// never call cb(), then you'll never get another chunk.


Transform.prototype._transform = function (chunk, encoding, cb) {
  cb(new ERR_METHOD_NOT_IMPLEMENTED('_transform()'));
};

Transform.prototype._write = function (chunk, encoding, cb) {
  var ts = this._transformState;
  ts.writecb = cb;
  ts.writechunk = chunk;
  ts.writeencoding = encoding;

  if (!ts.transforming) {
    var rs = this._readableState;
    if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
  }
}; // Doesn't matter what the args are here.
// _transform does all the work.
// That we got here means that the readable side wants more data.


Transform.prototype._read = function (n) {
  var ts = this._transformState;

  if (ts.writechunk !== null && !ts.transforming) {
    ts.transforming = true;

    this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
  } else {
    // mark that we need a transform, so that any data that comes in
    // will get processed, now that we've asked for it.
    ts.needTransform = true;
  }
};

Transform.prototype._destroy = function (err, cb) {
  Duplex.prototype._destroy.call(this, err, function (err2) {
    cb(err2);
  });
};

function done(stream, er, data) {
  if (er) return stream.emit('error', er);
  if (data != null) // single equals check for both `null` and `undefined`
    stream.push(data); // TODO(BridgeAR): Write a test for these two error cases
  // if there's nothing in the write buffer, then that means
  // that nothing more will ever be provided

  if (stream._writableState.length) throw new ERR_TRANSFORM_WITH_LENGTH_0();
  if (stream._transformState.transforming) throw new ERR_TRANSFORM_ALREADY_TRANSFORMING();
  return stream.push(null);
}
},{"../errors":145,"./_stream_duplex":146,"inherits":85}],150:[function(require,module,exports){
(function (process,global){(function (){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// A bit simpler than readable streams.
// Implement an async ._write(chunk, encoding, cb), and it'll handle all
// the drain event emission and buffering.
'use strict';

module.exports = Writable;
/* <replacement> */

function WriteReq(chunk, encoding, cb) {
  this.chunk = chunk;
  this.encoding = encoding;
  this.callback = cb;
  this.next = null;
} // It seems a linked list but it is not
// there will be only 2 of these for each stream


function CorkedRequest(state) {
  var _this = this;

  this.next = null;
  this.entry = null;

  this.finish = function () {
    onCorkedFinish(_this, state);
  };
}
/* </replacement> */

/*<replacement>*/


var Duplex;
/*</replacement>*/

Writable.WritableState = WritableState;
/*<replacement>*/

var internalUtil = {
  deprecate: require('util-deprecate')
};
/*</replacement>*/

/*<replacement>*/

var Stream = require('./internal/streams/stream');
/*</replacement>*/


var Buffer = require('buffer').Buffer;

var OurUint8Array = global.Uint8Array || function () {};

function _uint8ArrayToBuffer(chunk) {
  return Buffer.from(chunk);
}

function _isUint8Array(obj) {
  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}

var destroyImpl = require('./internal/streams/destroy');

var _require = require('./internal/streams/state'),
    getHighWaterMark = _require.getHighWaterMark;

var _require$codes = require('../errors').codes,
    ERR_INVALID_ARG_TYPE = _require$codes.ERR_INVALID_ARG_TYPE,
    ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED,
    ERR_MULTIPLE_CALLBACK = _require$codes.ERR_MULTIPLE_CALLBACK,
    ERR_STREAM_CANNOT_PIPE = _require$codes.ERR_STREAM_CANNOT_PIPE,
    ERR_STREAM_DESTROYED = _require$codes.ERR_STREAM_DESTROYED,
    ERR_STREAM_NULL_VALUES = _require$codes.ERR_STREAM_NULL_VALUES,
    ERR_STREAM_WRITE_AFTER_END = _require$codes.ERR_STREAM_WRITE_AFTER_END,
    ERR_UNKNOWN_ENCODING = _require$codes.ERR_UNKNOWN_ENCODING;

var errorOrDestroy = destroyImpl.errorOrDestroy;

require('inherits')(Writable, Stream);

function nop() {}

function WritableState(options, stream, isDuplex) {
  Duplex = Duplex || require('./_stream_duplex');
  options = options || {}; // Duplex streams are both readable and writable, but share
  // the same options object.
  // However, some cases require setting options to different
  // values for the readable and the writable sides of the duplex stream,
  // e.g. options.readableObjectMode vs. options.writableObjectMode, etc.

  if (typeof isDuplex !== 'boolean') isDuplex = stream instanceof Duplex; // object stream flag to indicate whether or not this stream
  // contains buffers or objects.

  this.objectMode = !!options.objectMode;
  if (isDuplex) this.objectMode = this.objectMode || !!options.writableObjectMode; // the point at which write() starts returning false
  // Note: 0 is a valid value, means that we always return false if
  // the entire buffer is not flushed immediately on write()

  this.highWaterMark = getHighWaterMark(this, options, 'writableHighWaterMark', isDuplex); // if _final has been called

  this.finalCalled = false; // drain event flag.

  this.needDrain = false; // at the start of calling end()

  this.ending = false; // when end() has been called, and returned

  this.ended = false; // when 'finish' is emitted

  this.finished = false; // has it been destroyed

  this.destroyed = false; // should we decode strings into buffers before passing to _write?
  // this is here so that some node-core streams can optimize string
  // handling at a lower level.

  var noDecode = options.decodeStrings === false;
  this.decodeStrings = !noDecode; // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.

  this.defaultEncoding = options.defaultEncoding || 'utf8'; // not an actual buffer we keep track of, but a measurement
  // of how much we're waiting to get pushed to some underlying
  // socket or file.

  this.length = 0; // a flag to see when we're in the middle of a write.

  this.writing = false; // when true all writes will be buffered until .uncork() call

  this.corked = 0; // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, because any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.

  this.sync = true; // a flag to know if we're processing previously buffered items, which
  // may call the _write() callback in the same tick, so that we don't
  // end up in an overlapped onwrite situation.

  this.bufferProcessing = false; // the callback that's passed to _write(chunk,cb)

  this.onwrite = function (er) {
    onwrite(stream, er);
  }; // the callback that the user supplies to write(chunk,encoding,cb)


  this.writecb = null; // the amount that is being written when _write is called.

  this.writelen = 0;
  this.bufferedRequest = null;
  this.lastBufferedRequest = null; // number of pending user-supplied write callbacks
  // this must be 0 before 'finish' can be emitted

  this.pendingcb = 0; // emit prefinish if the only thing we're waiting for is _write cbs
  // This is relevant for synchronous Transform streams

  this.prefinished = false; // True if the error was already emitted and should not be thrown again

  this.errorEmitted = false; // Should close be emitted on destroy. Defaults to true.

  this.emitClose = options.emitClose !== false; // Should .destroy() be called after 'finish' (and potentially 'end')

  this.autoDestroy = !!options.autoDestroy; // count buffered requests

  this.bufferedRequestCount = 0; // allocate the first CorkedRequest, there is always
  // one allocated and free to use, and we maintain at most two

  this.corkedRequestsFree = new CorkedRequest(this);
}

WritableState.prototype.getBuffer = function getBuffer() {
  var current = this.bufferedRequest;
  var out = [];

  while (current) {
    out.push(current);
    current = current.next;
  }

  return out;
};

(function () {
  try {
    Object.defineProperty(WritableState.prototype, 'buffer', {
      get: internalUtil.deprecate(function writableStateBufferGetter() {
        return this.getBuffer();
      }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')
    });
  } catch (_) {}
})(); // Test _writableState for inheritance to account for Duplex streams,
// whose prototype chain only points to Readable.


var realHasInstance;

if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {
  realHasInstance = Function.prototype[Symbol.hasInstance];
  Object.defineProperty(Writable, Symbol.hasInstance, {
    value: function value(object) {
      if (realHasInstance.call(this, object)) return true;
      if (this !== Writable) return false;
      return object && object._writableState instanceof WritableState;
    }
  });
} else {
  realHasInstance = function realHasInstance(object) {
    return object instanceof this;
  };
}

function Writable(options) {
  Duplex = Duplex || require('./_stream_duplex'); // Writable ctor is applied to Duplexes, too.
  // `realHasInstance` is necessary because using plain `instanceof`
  // would return false, as no `_writableState` property is attached.
  // Trying to use the custom `instanceof` for Writable here will also break the
  // Node.js LazyTransform implementation, which has a non-trivial getter for
  // `_writableState` that would lead to infinite recursion.
  // Checking for a Stream.Duplex instance is faster here instead of inside
  // the WritableState constructor, at least with V8 6.5

  var isDuplex = this instanceof Duplex;
  if (!isDuplex && !realHasInstance.call(Writable, this)) return new Writable(options);
  this._writableState = new WritableState(options, this, isDuplex); // legacy.

  this.writable = true;

  if (options) {
    if (typeof options.write === 'function') this._write = options.write;
    if (typeof options.writev === 'function') this._writev = options.writev;
    if (typeof options.destroy === 'function') this._destroy = options.destroy;
    if (typeof options.final === 'function') this._final = options.final;
  }

  Stream.call(this);
} // Otherwise people can pipe Writable streams, which is just wrong.


Writable.prototype.pipe = function () {
  errorOrDestroy(this, new ERR_STREAM_CANNOT_PIPE());
};

function writeAfterEnd(stream, cb) {
  var er = new ERR_STREAM_WRITE_AFTER_END(); // TODO: defer error events consistently everywhere, not just the cb

  errorOrDestroy(stream, er);
  process.nextTick(cb, er);
} // Checks that a user-supplied chunk is valid, especially for the particular
// mode the stream is in. Currently this means that `null` is never accepted
// and undefined/non-string values are only allowed in object mode.


function validChunk(stream, state, chunk, cb) {
  var er;

  if (chunk === null) {
    er = new ERR_STREAM_NULL_VALUES();
  } else if (typeof chunk !== 'string' && !state.objectMode) {
    er = new ERR_INVALID_ARG_TYPE('chunk', ['string', 'Buffer'], chunk);
  }

  if (er) {
    errorOrDestroy(stream, er);
    process.nextTick(cb, er);
    return false;
  }

  return true;
}

Writable.prototype.write = function (chunk, encoding, cb) {
  var state = this._writableState;
  var ret = false;

  var isBuf = !state.objectMode && _isUint8Array(chunk);

  if (isBuf && !Buffer.isBuffer(chunk)) {
    chunk = _uint8ArrayToBuffer(chunk);
  }

  if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;
  if (typeof cb !== 'function') cb = nop;
  if (state.ending) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {
    state.pendingcb++;
    ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);
  }
  return ret;
};

Writable.prototype.cork = function () {
  this._writableState.corked++;
};

Writable.prototype.uncork = function () {
  var state = this._writableState;

  if (state.corked) {
    state.corked--;
    if (!state.writing && !state.corked && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
  }
};

Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
  // node::ParseEncoding() requires lower case.
  if (typeof encoding === 'string') encoding = encoding.toLowerCase();
  if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new ERR_UNKNOWN_ENCODING(encoding);
  this._writableState.defaultEncoding = encoding;
  return this;
};

Object.defineProperty(Writable.prototype, 'writableBuffer', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    return this._writableState && this._writableState.getBuffer();
  }
});

function decodeChunk(state, chunk, encoding) {
  if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
    chunk = Buffer.from(chunk, encoding);
  }

  return chunk;
}

Object.defineProperty(Writable.prototype, 'writableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    return this._writableState.highWaterMark;
  }
}); // if we're already writing something, then just put this
// in the queue, and wait our turn.  Otherwise, call _write
// If we return false, then we need a drain event, so set that flag.

function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {
  if (!isBuf) {
    var newChunk = decodeChunk(state, chunk, encoding);

    if (chunk !== newChunk) {
      isBuf = true;
      encoding = 'buffer';
      chunk = newChunk;
    }
  }

  var len = state.objectMode ? 1 : chunk.length;
  state.length += len;
  var ret = state.length < state.highWaterMark; // we must ensure that previous needDrain will not be reset to false.

  if (!ret) state.needDrain = true;

  if (state.writing || state.corked) {
    var last = state.lastBufferedRequest;
    state.lastBufferedRequest = {
      chunk: chunk,
      encoding: encoding,
      isBuf: isBuf,
      callback: cb,
      next: null
    };

    if (last) {
      last.next = state.lastBufferedRequest;
    } else {
      state.bufferedRequest = state.lastBufferedRequest;
    }

    state.bufferedRequestCount += 1;
  } else {
    doWrite(stream, state, false, len, chunk, encoding, cb);
  }

  return ret;
}

function doWrite(stream, state, writev, len, chunk, encoding, cb) {
  state.writelen = len;
  state.writecb = cb;
  state.writing = true;
  state.sync = true;
  if (state.destroyed) state.onwrite(new ERR_STREAM_DESTROYED('write'));else if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
  state.sync = false;
}

function onwriteError(stream, state, sync, er, cb) {
  --state.pendingcb;

  if (sync) {
    // defer the callback if we are being called synchronously
    // to avoid piling up things on the stack
    process.nextTick(cb, er); // this can emit finish, and it will always happen
    // after error

    process.nextTick(finishMaybe, stream, state);
    stream._writableState.errorEmitted = true;
    errorOrDestroy(stream, er);
  } else {
    // the caller expect this to happen before if
    // it is async
    cb(er);
    stream._writableState.errorEmitted = true;
    errorOrDestroy(stream, er); // this can emit finish, but finish must
    // always follow error

    finishMaybe(stream, state);
  }
}

function onwriteStateUpdate(state) {
  state.writing = false;
  state.writecb = null;
  state.length -= state.writelen;
  state.writelen = 0;
}

function onwrite(stream, er) {
  var state = stream._writableState;
  var sync = state.sync;
  var cb = state.writecb;
  if (typeof cb !== 'function') throw new ERR_MULTIPLE_CALLBACK();
  onwriteStateUpdate(state);
  if (er) onwriteError(stream, state, sync, er, cb);else {
    // Check if we're actually ready to finish, but don't emit yet
    var finished = needFinish(state) || stream.destroyed;

    if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
      clearBuffer(stream, state);
    }

    if (sync) {
      process.nextTick(afterWrite, stream, state, finished, cb);
    } else {
      afterWrite(stream, state, finished, cb);
    }
  }
}

function afterWrite(stream, state, finished, cb) {
  if (!finished) onwriteDrain(stream, state);
  state.pendingcb--;
  cb();
  finishMaybe(stream, state);
} // Must force callback to be called on nextTick, so that we don't
// emit 'drain' before the write() consumer gets the 'false' return
// value, and has a chance to attach a 'drain' listener.


function onwriteDrain(stream, state) {
  if (state.length === 0 && state.needDrain) {
    state.needDrain = false;
    stream.emit('drain');
  }
} // if there's something in the buffer waiting, then process it


function clearBuffer(stream, state) {
  state.bufferProcessing = true;
  var entry = state.bufferedRequest;

  if (stream._writev && entry && entry.next) {
    // Fast case, write everything using _writev()
    var l = state.bufferedRequestCount;
    var buffer = new Array(l);
    var holder = state.corkedRequestsFree;
    holder.entry = entry;
    var count = 0;
    var allBuffers = true;

    while (entry) {
      buffer[count] = entry;
      if (!entry.isBuf) allBuffers = false;
      entry = entry.next;
      count += 1;
    }

    buffer.allBuffers = allBuffers;
    doWrite(stream, state, true, state.length, buffer, '', holder.finish); // doWrite is almost always async, defer these to save a bit of time
    // as the hot path ends with doWrite

    state.pendingcb++;
    state.lastBufferedRequest = null;

    if (holder.next) {
      state.corkedRequestsFree = holder.next;
      holder.next = null;
    } else {
      state.corkedRequestsFree = new CorkedRequest(state);
    }

    state.bufferedRequestCount = 0;
  } else {
    // Slow case, write chunks one-by-one
    while (entry) {
      var chunk = entry.chunk;
      var encoding = entry.encoding;
      var cb = entry.callback;
      var len = state.objectMode ? 1 : chunk.length;
      doWrite(stream, state, false, len, chunk, encoding, cb);
      entry = entry.next;
      state.bufferedRequestCount--; // if we didn't call the onwrite immediately, then
      // it means that we need to wait until it does.
      // also, that means that the chunk and cb are currently
      // being processed, so move the buffer counter past them.

      if (state.writing) {
        break;
      }
    }

    if (entry === null) state.lastBufferedRequest = null;
  }

  state.bufferedRequest = entry;
  state.bufferProcessing = false;
}

Writable.prototype._write = function (chunk, encoding, cb) {
  cb(new ERR_METHOD_NOT_IMPLEMENTED('_write()'));
};

Writable.prototype._writev = null;

Writable.prototype.end = function (chunk, encoding, cb) {
  var state = this._writableState;

  if (typeof chunk === 'function') {
    cb = chunk;
    chunk = null;
    encoding = null;
  } else if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (chunk !== null && chunk !== undefined) this.write(chunk, encoding); // .end() fully uncorks

  if (state.corked) {
    state.corked = 1;
    this.uncork();
  } // ignore unnecessary end() calls.


  if (!state.ending) endWritable(this, state, cb);
  return this;
};

Object.defineProperty(Writable.prototype, 'writableLength', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    return this._writableState.length;
  }
});

function needFinish(state) {
  return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
}

function callFinal(stream, state) {
  stream._final(function (err) {
    state.pendingcb--;

    if (err) {
      errorOrDestroy(stream, err);
    }

    state.prefinished = true;
    stream.emit('prefinish');
    finishMaybe(stream, state);
  });
}

function prefinish(stream, state) {
  if (!state.prefinished && !state.finalCalled) {
    if (typeof stream._final === 'function' && !state.destroyed) {
      state.pendingcb++;
      state.finalCalled = true;
      process.nextTick(callFinal, stream, state);
    } else {
      state.prefinished = true;
      stream.emit('prefinish');
    }
  }
}

function finishMaybe(stream, state) {
  var need = needFinish(state);

  if (need) {
    prefinish(stream, state);

    if (state.pendingcb === 0) {
      state.finished = true;
      stream.emit('finish');

      if (state.autoDestroy) {
        // In case of duplex streams we need a way to detect
        // if the readable side is ready for autoDestroy as well
        var rState = stream._readableState;

        if (!rState || rState.autoDestroy && rState.endEmitted) {
          stream.destroy();
        }
      }
    }
  }

  return need;
}

function endWritable(stream, state, cb) {
  state.ending = true;
  finishMaybe(stream, state);

  if (cb) {
    if (state.finished) process.nextTick(cb);else stream.once('finish', cb);
  }

  state.ended = true;
  stream.writable = false;
}

function onCorkedFinish(corkReq, state, err) {
  var entry = corkReq.entry;
  corkReq.entry = null;

  while (entry) {
    var cb = entry.callback;
    state.pendingcb--;
    cb(err);
    entry = entry.next;
  } // reuse the free corkReq.


  state.corkedRequestsFree.next = corkReq;
}

Object.defineProperty(Writable.prototype, 'destroyed', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function get() {
    if (this._writableState === undefined) {
      return false;
    }

    return this._writableState.destroyed;
  },
  set: function set(value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (!this._writableState) {
      return;
    } // backward compatibility, the user is explicitly
    // managing destroyed


    this._writableState.destroyed = value;
  }
});
Writable.prototype.destroy = destroyImpl.destroy;
Writable.prototype._undestroy = destroyImpl.undestroy;

Writable.prototype._destroy = function (err, cb) {
  cb(err);
};
}).call(this)}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../errors":145,"./_stream_duplex":146,"./internal/streams/destroy":153,"./internal/streams/state":157,"./internal/streams/stream":158,"_process":120,"buffer":44,"inherits":85,"util-deprecate":175}],151:[function(require,module,exports){
(function (process){(function (){
'use strict';

var _Object$setPrototypeO;

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

var finished = require('./end-of-stream');

var kLastResolve = Symbol('lastResolve');
var kLastReject = Symbol('lastReject');
var kError = Symbol('error');
var kEnded = Symbol('ended');
var kLastPromise = Symbol('lastPromise');
var kHandlePromise = Symbol('handlePromise');
var kStream = Symbol('stream');

function createIterResult(value, done) {
  return {
    value: value,
    done: done
  };
}

function readAndResolve(iter) {
  var resolve = iter[kLastResolve];

  if (resolve !== null) {
    var data = iter[kStream].read(); // we defer if data is null
    // we can be expecting either 'end' or
    // 'error'

    if (data !== null) {
      iter[kLastPromise] = null;
      iter[kLastResolve] = null;
      iter[kLastReject] = null;
      resolve(createIterResult(data, false));
    }
  }
}

function onReadable(iter) {
  // we wait for the next tick, because it might
  // emit an error with process.nextTick
  process.nextTick(readAndResolve, iter);
}

function wrapForNext(lastPromise, iter) {
  return function (resolve, reject) {
    lastPromise.then(function () {
      if (iter[kEnded]) {
        resolve(createIterResult(undefined, true));
        return;
      }

      iter[kHandlePromise](resolve, reject);
    }, reject);
  };
}

var AsyncIteratorPrototype = Object.getPrototypeOf(function () {});
var ReadableStreamAsyncIteratorPrototype = Object.setPrototypeOf((_Object$setPrototypeO = {
  get stream() {
    return this[kStream];
  },

  next: function next() {
    var _this = this;

    // if we have detected an error in the meanwhile
    // reject straight away
    var error = this[kError];

    if (error !== null) {
      return Promise.reject(error);
    }

    if (this[kEnded]) {
      return Promise.resolve(createIterResult(undefined, true));
    }

    if (this[kStream].destroyed) {
      // We need to defer via nextTick because if .destroy(err) is
      // called, the error will be emitted via nextTick, and
      // we cannot guarantee that there is no error lingering around
      // waiting to be emitted.
      return new Promise(function (resolve, reject) {
        process.nextTick(function () {
          if (_this[kError]) {
            reject(_this[kError]);
          } else {
            resolve(createIterResult(undefined, true));
          }
        });
      });
    } // if we have multiple next() calls
    // we will wait for the previous Promise to finish
    // this logic is optimized to support for await loops,
    // where next() is only called once at a time


    var lastPromise = this[kLastPromise];
    var promise;

    if (lastPromise) {
      promise = new Promise(wrapForNext(lastPromise, this));
    } else {
      // fast path needed to support multiple this.push()
      // without triggering the next() queue
      var data = this[kStream].read();

      if (data !== null) {
        return Promise.resolve(createIterResult(data, false));
      }

      promise = new Promise(this[kHandlePromise]);
    }

    this[kLastPromise] = promise;
    return promise;
  }
}, _defineProperty(_Object$setPrototypeO, Symbol.asyncIterator, function () {
  return this;
}), _defineProperty(_Object$setPrototypeO, "return", function _return() {
  var _this2 = this;

  // destroy(err, cb) is a private API
  // we can guarantee we have that here, because we control the
  // Readable class this is attached to
  return new Promise(function (resolve, reject) {
    _this2[kStream].destroy(null, function (err) {
      if (err) {
        reject(err);
        return;
      }

      resolve(createIterResult(undefined, true));
    });
  });
}), _Object$setPrototypeO), AsyncIteratorPrototype);

var createReadableStreamAsyncIterator = function createReadableStreamAsyncIterator(stream) {
  var _Object$create;

  var iterator = Object.create(ReadableStreamAsyncIteratorPrototype, (_Object$create = {}, _defineProperty(_Object$create, kStream, {
    value: stream,
    writable: true
  }), _defineProperty(_Object$create, kLastResolve, {
    value: null,
    writable: true
  }), _defineProperty(_Object$create, kLastReject, {
    value: null,
    writable: true
  }), _defineProperty(_Object$create, kError, {
    value: null,
    writable: true
  }), _defineProperty(_Object$create, kEnded, {
    value: stream._readableState.endEmitted,
    writable: true
  }), _defineProperty(_Object$create, kHandlePromise, {
    value: function value(resolve, reject) {
      var data = iterator[kStream].read();

      if (data) {
        iterator[kLastPromise] = null;
        iterator[kLastResolve] = null;
        iterator[kLastReject] = null;
        resolve(createIterResult(data, false));
      } else {
        iterator[kLastResolve] = resolve;
        iterator[kLastReject] = reject;
      }
    },
    writable: true
  }), _Object$create));
  iterator[kLastPromise] = null;
  finished(stream, function (err) {
    if (err && err.code !== 'ERR_STREAM_PREMATURE_CLOSE') {
      var reject = iterator[kLastReject]; // reject if we are waiting for data in the Promise
      // returned by next() and store the error

      if (reject !== null) {
        iterator[kLastPromise] = null;
        iterator[kLastResolve] = null;
        iterator[kLastReject] = null;
        reject(err);
      }

      iterator[kError] = err;
      return;
    }

    var resolve = iterator[kLastResolve];

    if (resolve !== null) {
      iterator[kLastPromise] = null;
      iterator[kLastResolve] = null;
      iterator[kLastReject] = null;
      resolve(createIterResult(undefined, true));
    }

    iterator[kEnded] = true;
  });
  stream.on('readable', onReadable.bind(null, iterator));
  return iterator;
};

module.exports = createReadableStreamAsyncIterator;
}).call(this)}).call(this,require('_process'))
},{"./end-of-stream":154,"_process":120}],152:[function(require,module,exports){
'use strict';

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var _require = require('buffer'),
    Buffer = _require.Buffer;

var _require2 = require('util'),
    inspect = _require2.inspect;

var custom = inspect && inspect.custom || 'inspect';

function copyBuffer(src, target, offset) {
  Buffer.prototype.copy.call(src, target, offset);
}

module.exports =
/*#__PURE__*/
function () {
  function BufferList() {
    _classCallCheck(this, BufferList);

    this.head = null;
    this.tail = null;
    this.length = 0;
  }

  _createClass(BufferList, [{
    key: "push",
    value: function push(v) {
      var entry = {
        data: v,
        next: null
      };
      if (this.length > 0) this.tail.next = entry;else this.head = entry;
      this.tail = entry;
      ++this.length;
    }
  }, {
    key: "unshift",
    value: function unshift(v) {
      var entry = {
        data: v,
        next: this.head
      };
      if (this.length === 0) this.tail = entry;
      this.head = entry;
      ++this.length;
    }
  }, {
    key: "shift",
    value: function shift() {
      if (this.length === 0) return;
      var ret = this.head.data;
      if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
      --this.length;
      return ret;
    }
  }, {
    key: "clear",
    value: function clear() {
      this.head = this.tail = null;
      this.length = 0;
    }
  }, {
    key: "join",
    value: function join(s) {
      if (this.length === 0) return '';
      var p = this.head;
      var ret = '' + p.data;

      while (p = p.next) {
        ret += s + p.data;
      }

      return ret;
    }
  }, {
    key: "concat",
    value: function concat(n) {
      if (this.length === 0) return Buffer.alloc(0);
      var ret = Buffer.allocUnsafe(n >>> 0);
      var p = this.head;
      var i = 0;

      while (p) {
        copyBuffer(p.data, ret, i);
        i += p.data.length;
        p = p.next;
      }

      return ret;
    } // Consumes a specified amount of bytes or characters from the buffered data.

  }, {
    key: "consume",
    value: function consume(n, hasStrings) {
      var ret;

      if (n < this.head.data.length) {
        // `slice` is the same for buffers and strings.
        ret = this.head.data.slice(0, n);
        this.head.data = this.head.data.slice(n);
      } else if (n === this.head.data.length) {
        // First chunk is a perfect match.
        ret = this.shift();
      } else {
        // Result spans more than one buffer.
        ret = hasStrings ? this._getString(n) : this._getBuffer(n);
      }

      return ret;
    }
  }, {
    key: "first",
    value: function first() {
      return this.head.data;
    } // Consumes a specified amount of characters from the buffered data.

  }, {
    key: "_getString",
    value: function _getString(n) {
      var p = this.head;
      var c = 1;
      var ret = p.data;
      n -= ret.length;

      while (p = p.next) {
        var str = p.data;
        var nb = n > str.length ? str.length : n;
        if (nb === str.length) ret += str;else ret += str.slice(0, n);
        n -= nb;

        if (n === 0) {
          if (nb === str.length) {
            ++c;
            if (p.next) this.head = p.next;else this.head = this.tail = null;
          } else {
            this.head = p;
            p.data = str.slice(nb);
          }

          break;
        }

        ++c;
      }

      this.length -= c;
      return ret;
    } // Consumes a specified amount of bytes from the buffered data.

  }, {
    key: "_getBuffer",
    value: function _getBuffer(n) {
      var ret = Buffer.allocUnsafe(n);
      var p = this.head;
      var c = 1;
      p.data.copy(ret);
      n -= p.data.length;

      while (p = p.next) {
        var buf = p.data;
        var nb = n > buf.length ? buf.length : n;
        buf.copy(ret, ret.length - n, 0, nb);
        n -= nb;

        if (n === 0) {
          if (nb === buf.length) {
            ++c;
            if (p.next) this.head = p.next;else this.head = this.tail = null;
          } else {
            this.head = p;
            p.data = buf.slice(nb);
          }

          break;
        }

        ++c;
      }

      this.length -= c;
      return ret;
    } // Make sure the linked list only shows the minimal necessary information.

  }, {
    key: custom,
    value: function value(_, options) {
      return inspect(this, _objectSpread({}, options, {
        // Only inspect one level.
        depth: 0,
        // It should not recurse.
        customInspect: false
      }));
    }
  }]);

  return BufferList;
}();
},{"buffer":44,"util":43}],153:[function(require,module,exports){
(function (process){(function (){
'use strict'; // undocumented cb() API, needed for core, not for public API

function destroy(err, cb) {
  var _this = this;

  var readableDestroyed = this._readableState && this._readableState.destroyed;
  var writableDestroyed = this._writableState && this._writableState.destroyed;

  if (readableDestroyed || writableDestroyed) {
    if (cb) {
      cb(err);
    } else if (err) {
      if (!this._writableState) {
        process.nextTick(emitErrorNT, this, err);
      } else if (!this._writableState.errorEmitted) {
        this._writableState.errorEmitted = true;
        process.nextTick(emitErrorNT, this, err);
      }
    }

    return this;
  } // we set destroyed to true before firing error callbacks in order
  // to make it re-entrance safe in case destroy() is called within callbacks


  if (this._readableState) {
    this._readableState.destroyed = true;
  } // if this is a duplex stream mark the writable part as destroyed as well


  if (this._writableState) {
    this._writableState.destroyed = true;
  }

  this._destroy(err || null, function (err) {
    if (!cb && err) {
      if (!_this._writableState) {
        process.nextTick(emitErrorAndCloseNT, _this, err);
      } else if (!_this._writableState.errorEmitted) {
        _this._writableState.errorEmitted = true;
        process.nextTick(emitErrorAndCloseNT, _this, err);
      } else {
        process.nextTick(emitCloseNT, _this);
      }
    } else if (cb) {
      process.nextTick(emitCloseNT, _this);
      cb(err);
    } else {
      process.nextTick(emitCloseNT, _this);
    }
  });

  return this;
}

function emitErrorAndCloseNT(self, err) {
  emitErrorNT(self, err);
  emitCloseNT(self);
}

function emitCloseNT(self) {
  if (self._writableState && !self._writableState.emitClose) return;
  if (self._readableState && !self._readableState.emitClose) return;
  self.emit('close');
}

function undestroy() {
  if (this._readableState) {
    this._readableState.destroyed = false;
    this._readableState.reading = false;
    this._readableState.ended = false;
    this._readableState.endEmitted = false;
  }

  if (this._writableState) {
    this._writableState.destroyed = false;
    this._writableState.ended = false;
    this._writableState.ending = false;
    this._writableState.finalCalled = false;
    this._writableState.prefinished = false;
    this._writableState.finished = false;
    this._writableState.errorEmitted = false;
  }
}

function emitErrorNT(self, err) {
  self.emit('error', err);
}

function errorOrDestroy(stream, err) {
  // We have tests that rely on errors being emitted
  // in the same tick, so changing this is semver major.
  // For now when you opt-in to autoDestroy we allow
  // the error to be emitted nextTick. In a future
  // semver major update we should change the default to this.
  var rState = stream._readableState;
  var wState = stream._writableState;
  if (rState && rState.autoDestroy || wState && wState.autoDestroy) stream.destroy(err);else stream.emit('error', err);
}

module.exports = {
  destroy: destroy,
  undestroy: undestroy,
  errorOrDestroy: errorOrDestroy
};
}).call(this)}).call(this,require('_process'))
},{"_process":120}],154:[function(require,module,exports){
// Ported from https://github.com/mafintosh/end-of-stream with
// permission from the author, Mathias Buus (@mafintosh).
'use strict';

var ERR_STREAM_PREMATURE_CLOSE = require('../../../errors').codes.ERR_STREAM_PREMATURE_CLOSE;

function once(callback) {
  var called = false;
  return function () {
    if (called) return;
    called = true;

    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    callback.apply(this, args);
  };
}

function noop() {}

function isRequest(stream) {
  return stream.setHeader && typeof stream.abort === 'function';
}

function eos(stream, opts, callback) {
  if (typeof opts === 'function') return eos(stream, null, opts);
  if (!opts) opts = {};
  callback = once(callback || noop);
  var readable = opts.readable || opts.readable !== false && stream.readable;
  var writable = opts.writable || opts.writable !== false && stream.writable;

  var onlegacyfinish = function onlegacyfinish() {
    if (!stream.writable) onfinish();
  };

  var writableEnded = stream._writableState && stream._writableState.finished;

  var onfinish = function onfinish() {
    writable = false;
    writableEnded = true;
    if (!readable) callback.call(stream);
  };

  var readableEnded = stream._readableState && stream._readableState.endEmitted;

  var onend = function onend() {
    readable = false;
    readableEnded = true;
    if (!writable) callback.call(stream);
  };

  var onerror = function onerror(err) {
    callback.call(stream, err);
  };

  var onclose = function onclose() {
    var err;

    if (readable && !readableEnded) {
      if (!stream._readableState || !stream._readableState.ended) err = new ERR_STREAM_PREMATURE_CLOSE();
      return callback.call(stream, err);
    }

    if (writable && !writableEnded) {
      if (!stream._writableState || !stream._writableState.ended) err = new ERR_STREAM_PREMATURE_CLOSE();
      return callback.call(stream, err);
    }
  };

  var onrequest = function onrequest() {
    stream.req.on('finish', onfinish);
  };

  if (isRequest(stream)) {
    stream.on('complete', onfinish);
    stream.on('abort', onclose);
    if (stream.req) onrequest();else stream.on('request', onrequest);
  } else if (writable && !stream._writableState) {
    // legacy streams
    stream.on('end', onlegacyfinish);
    stream.on('close', onlegacyfinish);
  }

  stream.on('end', onend);
  stream.on('finish', onfinish);
  if (opts.error !== false) stream.on('error', onerror);
  stream.on('close', onclose);
  return function () {
    stream.removeListener('complete', onfinish);
    stream.removeListener('abort', onclose);
    stream.removeListener('request', onrequest);
    if (stream.req) stream.req.removeListener('finish', onfinish);
    stream.removeListener('end', onlegacyfinish);
    stream.removeListener('close', onlegacyfinish);
    stream.removeListener('finish', onfinish);
    stream.removeListener('end', onend);
    stream.removeListener('error', onerror);
    stream.removeListener('close', onclose);
  };
}

module.exports = eos;
},{"../../../errors":145}],155:[function(require,module,exports){
module.exports = function () {
  throw new Error('Readable.from is not available in the browser')
};

},{}],156:[function(require,module,exports){
// Ported from https://github.com/mafintosh/pump with
// permission from the author, Mathias Buus (@mafintosh).
'use strict';

var eos;

function once(callback) {
  var called = false;
  return function () {
    if (called) return;
    called = true;
    callback.apply(void 0, arguments);
  };
}

var _require$codes = require('../../../errors').codes,
    ERR_MISSING_ARGS = _require$codes.ERR_MISSING_ARGS,
    ERR_STREAM_DESTROYED = _require$codes.ERR_STREAM_DESTROYED;

function noop(err) {
  // Rethrow the error if it exists to avoid swallowing it
  if (err) throw err;
}

function isRequest(stream) {
  return stream.setHeader && typeof stream.abort === 'function';
}

function destroyer(stream, reading, writing, callback) {
  callback = once(callback);
  var closed = false;
  stream.on('close', function () {
    closed = true;
  });
  if (eos === undefined) eos = require('./end-of-stream');
  eos(stream, {
    readable: reading,
    writable: writing
  }, function (err) {
    if (err) return callback(err);
    closed = true;
    callback();
  });
  var destroyed = false;
  return function (err) {
    if (closed) return;
    if (destroyed) return;
    destroyed = true; // request.destroy just do .end - .abort is what we want

    if (isRequest(stream)) return stream.abort();
    if (typeof stream.destroy === 'function') return stream.destroy();
    callback(err || new ERR_STREAM_DESTROYED('pipe'));
  };
}

function call(fn) {
  fn();
}

function pipe(from, to) {
  return from.pipe(to);
}

function popCallback(streams) {
  if (!streams.length) return noop;
  if (typeof streams[streams.length - 1] !== 'function') return noop;
  return streams.pop();
}

function pipeline() {
  for (var _len = arguments.length, streams = new Array(_len), _key = 0; _key < _len; _key++) {
    streams[_key] = arguments[_key];
  }

  var callback = popCallback(streams);
  if (Array.isArray(streams[0])) streams = streams[0];

  if (streams.length < 2) {
    throw new ERR_MISSING_ARGS('streams');
  }

  var error;
  var destroys = streams.map(function (stream, i) {
    var reading = i < streams.length - 1;
    var writing = i > 0;
    return destroyer(stream, reading, writing, function (err) {
      if (!error) error = err;
      if (err) destroys.forEach(call);
      if (reading) return;
      destroys.forEach(call);
      callback(error);
    });
  });
  return streams.reduce(pipe);
}

module.exports = pipeline;
},{"../../../errors":145,"./end-of-stream":154}],157:[function(require,module,exports){
'use strict';

var ERR_INVALID_OPT_VALUE = require('../../../errors').codes.ERR_INVALID_OPT_VALUE;

function highWaterMarkFrom(options, isDuplex, duplexKey) {
  return options.highWaterMark != null ? options.highWaterMark : isDuplex ? options[duplexKey] : null;
}

function getHighWaterMark(state, options, duplexKey, isDuplex) {
  var hwm = highWaterMarkFrom(options, isDuplex, duplexKey);

  if (hwm != null) {
    if (!(isFinite(hwm) && Math.floor(hwm) === hwm) || hwm < 0) {
      var name = isDuplex ? duplexKey : 'highWaterMark';
      throw new ERR_INVALID_OPT_VALUE(name, hwm);
    }

    return Math.floor(hwm);
  } // Default value


  return state.objectMode ? 16 : 16 * 1024;
}

module.exports = {
  getHighWaterMark: getHighWaterMark
};
},{"../../../errors":145}],158:[function(require,module,exports){
module.exports = require('events').EventEmitter;

},{"events":74}],159:[function(require,module,exports){
exports = module.exports = require('./lib/_stream_readable.js');
exports.Stream = exports;
exports.Readable = exports;
exports.Writable = require('./lib/_stream_writable.js');
exports.Duplex = require('./lib/_stream_duplex.js');
exports.Transform = require('./lib/_stream_transform.js');
exports.PassThrough = require('./lib/_stream_passthrough.js');
exports.finished = require('./lib/internal/streams/end-of-stream.js');
exports.pipeline = require('./lib/internal/streams/pipeline.js');

},{"./lib/_stream_duplex.js":146,"./lib/_stream_passthrough.js":147,"./lib/_stream_readable.js":148,"./lib/_stream_transform.js":149,"./lib/_stream_writable.js":150,"./lib/internal/streams/end-of-stream.js":154,"./lib/internal/streams/pipeline.js":156}],160:[function(require,module,exports){
"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.default = exports.connect = exports.io = exports.Socket = exports.Manager = exports.protocol = void 0;
const url_js_1 = require("./url.js");
const manager_js_1 = require("./manager.js");
Object.defineProperty(exports, "Manager", { enumerable: true, get: function () { return manager_js_1.Manager; } });
const socket_js_1 = require("./socket.js");
Object.defineProperty(exports, "Socket", { enumerable: true, get: function () { return socket_js_1.Socket; } });
const debug_1 = __importDefault(require("debug")); // debug()
const debug = debug_1.default("socket.io-client"); // debug()
/**
 * Managers cache.
 */
const cache = {};
function lookup(uri, opts) {
    if (typeof uri === "object") {
        opts = uri;
        uri = undefined;
    }
    opts = opts || {};
    const parsed = url_js_1.url(uri, opts.path || "/socket.io");
    const source = parsed.source;
    const id = parsed.id;
    const path = parsed.path;
    const sameNamespace = cache[id] && path in cache[id]["nsps"];
    const newConnection = opts.forceNew ||
        opts["force new connection"] ||
        false === opts.multiplex ||
        sameNamespace;
    let io;
    if (newConnection) {
        debug("ignoring socket cache for %s", source);
        io = new manager_js_1.Manager(source, opts);
    }
    else {
        if (!cache[id]) {
            debug("new io instance for %s", source);
            cache[id] = new manager_js_1.Manager(source, opts);
        }
        io = cache[id];
    }
    if (parsed.query && !opts.query) {
        opts.query = parsed.queryKey;
    }
    return io.socket(parsed.path, opts);
}
exports.io = lookup;
exports.connect = lookup;
exports.default = lookup;
// so that "lookup" can be used both as a function (e.g. `io(...)`) and as a
// namespace (e.g. `io.connect(...)`), for backward compatibility
Object.assign(lookup, {
    Manager: manager_js_1.Manager,
    Socket: socket_js_1.Socket,
    io: lookup,
    connect: lookup,
});
/**
 * Protocol version.
 *
 * @public
 */
var socket_io_parser_1 = require("socket.io-parser");
Object.defineProperty(exports, "protocol", { enumerable: true, get: function () { return socket_io_parser_1.protocol; } });

module.exports = lookup;

},{"./manager.js":161,"./socket.js":163,"./url.js":164,"debug":55,"socket.io-parser":166}],161:[function(require,module,exports){
"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
    __setModuleDefault(result, mod);
    return result;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Manager = void 0;
const engine_io_client_1 = require("engine.io-client");
const socket_js_1 = require("./socket.js");
const parser = __importStar(require("socket.io-parser"));
const on_js_1 = require("./on.js");
const backo2_1 = __importDefault(require("backo2"));
const component_emitter_1 = require("@socket.io/component-emitter");
const debug_1 = __importDefault(require("debug")); // debug()
const debug = debug_1.default("socket.io-client:manager"); // debug()
class Manager extends component_emitter_1.Emitter {
    constructor(uri, opts) {
        var _a;
        super();
        this.nsps = {};
        this.subs = [];
        if (uri && "object" === typeof uri) {
            opts = uri;
            uri = undefined;
        }
        opts = opts || {};
        opts.path = opts.path || "/socket.io";
        this.opts = opts;
        engine_io_client_1.installTimerFunctions(this, opts);
        this.reconnection(opts.reconnection !== false);
        this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);
        this.reconnectionDelay(opts.reconnectionDelay || 1000);
        this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);
        this.randomizationFactor((_a = opts.randomizationFactor) !== null && _a !== void 0 ? _a : 0.5);
        this.backoff = new backo2_1.default({
            min: this.reconnectionDelay(),
            max: this.reconnectionDelayMax(),
            jitter: this.randomizationFactor(),
        });
        this.timeout(null == opts.timeout ? 20000 : opts.timeout);
        this._readyState = "closed";
        this.uri = uri;
        const _parser = opts.parser || parser;
        this.encoder = new _parser.Encoder();
        this.decoder = new _parser.Decoder();
        this._autoConnect = opts.autoConnect !== false;
        if (this._autoConnect)
            this.open();
    }
    reconnection(v) {
        if (!arguments.length)
            return this._reconnection;
        this._reconnection = !!v;
        return this;
    }
    reconnectionAttempts(v) {
        if (v === undefined)
            return this._reconnectionAttempts;
        this._reconnectionAttempts = v;
        return this;
    }
    reconnectionDelay(v) {
        var _a;
        if (v === undefined)
            return this._reconnectionDelay;
        this._reconnectionDelay = v;
        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMin(v);
        return this;
    }
    randomizationFactor(v) {
        var _a;
        if (v === undefined)
            return this._randomizationFactor;
        this._randomizationFactor = v;
        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setJitter(v);
        return this;
    }
    reconnectionDelayMax(v) {
        var _a;
        if (v === undefined)
            return this._reconnectionDelayMax;
        this._reconnectionDelayMax = v;
        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMax(v);
        return this;
    }
    timeout(v) {
        if (!arguments.length)
            return this._timeout;
        this._timeout = v;
        return this;
    }
    /**
     * Starts trying to reconnect if reconnection is enabled and we have not
     * started reconnecting yet
     *
     * @private
     */
    maybeReconnectOnOpen() {
        // Only try to reconnect if it's the first time we're connecting
        if (!this._reconnecting &&
            this._reconnection &&
            this.backoff.attempts === 0) {
            // keeps reconnection from firing twice for the same reconnection loop
            this.reconnect();
        }
    }
    /**
     * Sets the current transport `socket`.
     *
     * @param {Function} fn - optional, callback
     * @return self
     * @public
     */
    open(fn) {
        debug("readyState %s", this._readyState);
        if (~this._readyState.indexOf("open"))
            return this;
        debug("opening %s", this.uri);
        this.engine = new engine_io_client_1.Socket(this.uri, this.opts);
        const socket = this.engine;
        const self = this;
        this._readyState = "opening";
        this.skipReconnect = false;
        // emit `open`
        const openSubDestroy = on_js_1.on(socket, "open", function () {
            self.onopen();
            fn && fn();
        });
        // emit `error`
        const errorSub = on_js_1.on(socket, "error", (err) => {
            debug("error");
            self.cleanup();
            self._readyState = "closed";
            this.emitReserved("error", err);
            if (fn) {
                fn(err);
            }
            else {
                // Only do this if there is no fn to handle the error
                self.maybeReconnectOnOpen();
            }
        });
        if (false !== this._timeout) {
            const timeout = this._timeout;
            debug("connect attempt will timeout after %d", timeout);
            if (timeout === 0) {
                openSubDestroy(); // prevents a race condition with the 'open' event
            }
            // set timer
            const timer = this.setTimeoutFn(() => {
                debug("connect attempt timed out after %d", timeout);
                openSubDestroy();
                socket.close();
                // @ts-ignore
                socket.emit("error", new Error("timeout"));
            }, timeout);
            if (this.opts.autoUnref) {
                timer.unref();
            }
            this.subs.push(function subDestroy() {
                clearTimeout(timer);
            });
        }
        this.subs.push(openSubDestroy);
        this.subs.push(errorSub);
        return this;
    }
    /**
     * Alias for open()
     *
     * @return self
     * @public
     */
    connect(fn) {
        return this.open(fn);
    }
    /**
     * Called upon transport open.
     *
     * @private
     */
    onopen() {
        debug("open");
        // clear old subs
        this.cleanup();
        // mark as open
        this._readyState = "open";
        this.emitReserved("open");
        // add new subs
        const socket = this.engine;
        this.subs.push(on_js_1.on(socket, "ping", this.onping.bind(this)), on_js_1.on(socket, "data", this.ondata.bind(this)), on_js_1.on(socket, "error", this.onerror.bind(this)), on_js_1.on(socket, "close", this.onclose.bind(this)), on_js_1.on(this.decoder, "decoded", this.ondecoded.bind(this)));
    }
    /**
     * Called upon a ping.
     *
     * @private
     */
    onping() {
        this.emitReserved("ping");
    }
    /**
     * Called with data.
     *
     * @private
     */
    ondata(data) {
        this.decoder.add(data);
    }
    /**
     * Called when parser fully decodes a packet.
     *
     * @private
     */
    ondecoded(packet) {
        this.emitReserved("packet", packet);
    }
    /**
     * Called upon socket error.
     *
     * @private
     */
    onerror(err) {
        debug("error", err);
        this.emitReserved("error", err);
    }
    /**
     * Creates a new socket for the given `nsp`.
     *
     * @return {Socket}
     * @public
     */
    socket(nsp, opts) {
        let socket = this.nsps[nsp];
        if (!socket) {
            socket = new socket_js_1.Socket(this, nsp, opts);
            this.nsps[nsp] = socket;
        }
        return socket;
    }
    /**
     * Called upon a socket close.
     *
     * @param socket
     * @private
     */
    _destroy(socket) {
        const nsps = Object.keys(this.nsps);
        for (const nsp of nsps) {
            const socket = this.nsps[nsp];
            if (socket.active) {
                debug("socket %s is still active, skipping close", nsp);
                return;
            }
        }
        this._close();
    }
    /**
     * Writes a packet.
     *
     * @param packet
     * @private
     */
    _packet(packet) {
        debug("writing packet %j", packet);
        const encodedPackets = this.encoder.encode(packet);
        for (let i = 0; i < encodedPackets.length; i++) {
            this.engine.write(encodedPackets[i], packet.options);
        }
    }
    /**
     * Clean up transport subscriptions and packet buffer.
     *
     * @private
     */
    cleanup() {
        debug("cleanup");
        this.subs.forEach((subDestroy) => subDestroy());
        this.subs.length = 0;
        this.decoder.destroy();
    }
    /**
     * Close the current socket.
     *
     * @private
     */
    _close() {
        debug("disconnect");
        this.skipReconnect = true;
        this._reconnecting = false;
        this.onclose("forced close");
        if (this.engine)
            this.engine.close();
    }
    /**
     * Alias for close()
     *
     * @private
     */
    disconnect() {
        return this._close();
    }
    /**
     * Called upon engine close.
     *
     * @private
     */
    onclose(reason) {
        debug("closed due to %s", reason);
        this.cleanup();
        this.backoff.reset();
        this._readyState = "closed";
        this.emitReserved("close", reason);
        if (this._reconnection && !this.skipReconnect) {
            this.reconnect();
        }
    }
    /**
     * Attempt a reconnection.
     *
     * @private
     */
    reconnect() {
        if (this._reconnecting || this.skipReconnect)
            return this;
        const self = this;
        if (this.backoff.attempts >= this._reconnectionAttempts) {
            debug("reconnect failed");
            this.backoff.reset();
            this.emitReserved("reconnect_failed");
            this._reconnecting = false;
        }
        else {
            const delay = this.backoff.duration();
            debug("will wait %dms before reconnect attempt", delay);
            this._reconnecting = true;
            const timer = this.setTimeoutFn(() => {
                if (self.skipReconnect)
                    return;
                debug("attempting reconnect");
                this.emitReserved("reconnect_attempt", self.backoff.attempts);
                // check again for the case socket closed in above events
                if (self.skipReconnect)
                    return;
                self.open((err) => {
                    if (err) {
                        debug("reconnect attempt error");
                        self._reconnecting = false;
                        self.reconnect();
                        this.emitReserved("reconnect_error", err);
                    }
                    else {
                        debug("reconnect success");
                        self.onreconnect();
                    }
                });
            }, delay);
            if (this.opts.autoUnref) {
                timer.unref();
            }
            this.subs.push(function subDestroy() {
                clearTimeout(timer);
            });
        }
    }
    /**
     * Called upon successful reconnect.
     *
     * @private
     */
    onreconnect() {
        const attempt = this.backoff.attempts;
        this._reconnecting = false;
        this.backoff.reset();
        this.emitReserved("reconnect", attempt);
    }
}
exports.Manager = Manager;

},{"./on.js":162,"./socket.js":163,"@socket.io/component-emitter":35,"backo2":41,"debug":55,"engine.io-client":58,"socket.io-parser":166}],162:[function(require,module,exports){
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.on = void 0;
function on(obj, ev, fn) {
    obj.on(ev, fn);
    return function subDestroy() {
        obj.off(ev, fn);
    };
}
exports.on = on;

},{}],163:[function(require,module,exports){
"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Socket = void 0;
const socket_io_parser_1 = require("socket.io-parser");
const on_js_1 = require("./on.js");
const component_emitter_1 = require("@socket.io/component-emitter");
const debug_1 = __importDefault(require("debug")); // debug()
const debug = debug_1.default("socket.io-client:socket"); // debug()
/**
 * Internal events.
 * These events can't be emitted by the user.
 */
const RESERVED_EVENTS = Object.freeze({
    connect: 1,
    connect_error: 1,
    disconnect: 1,
    disconnecting: 1,
    // EventEmitter reserved events: https://nodejs.org/api/events.html#events_event_newlistener
    newListener: 1,
    removeListener: 1,
});
class Socket extends component_emitter_1.Emitter {
    /**
     * `Socket` constructor.
     *
     * @public
     */
    constructor(io, nsp, opts) {
        super();
        this.connected = false;
        this.disconnected = true;
        this.receiveBuffer = [];
        this.sendBuffer = [];
        this.ids = 0;
        this.acks = {};
        this.flags = {};
        this.io = io;
        this.nsp = nsp;
        if (opts && opts.auth) {
            this.auth = opts.auth;
        }
        if (this.io._autoConnect)
            this.open();
    }
    /**
     * Subscribe to open, close and packet events
     *
     * @private
     */
    subEvents() {
        if (this.subs)
            return;
        const io = this.io;
        this.subs = [
            on_js_1.on(io, "open", this.onopen.bind(this)),
            on_js_1.on(io, "packet", this.onpacket.bind(this)),
            on_js_1.on(io, "error", this.onerror.bind(this)),
            on_js_1.on(io, "close", this.onclose.bind(this)),
        ];
    }
    /**
     * Whether the Socket will try to reconnect when its Manager connects or reconnects
     */
    get active() {
        return !!this.subs;
    }
    /**
     * "Opens" the socket.
     *
     * @public
     */
    connect() {
        if (this.connected)
            return this;
        this.subEvents();
        if (!this.io["_reconnecting"])
            this.io.open(); // ensure open
        if ("open" === this.io._readyState)
            this.onopen();
        return this;
    }
    /**
     * Alias for connect()
     */
    open() {
        return this.connect();
    }
    /**
     * Sends a `message` event.
     *
     * @return self
     * @public
     */
    send(...args) {
        args.unshift("message");
        this.emit.apply(this, args);
        return this;
    }
    /**
     * Override `emit`.
     * If the event is in `events`, it's emitted normally.
     *
     * @return self
     * @public
     */
    emit(ev, ...args) {
        if (RESERVED_EVENTS.hasOwnProperty(ev)) {
            throw new Error('"' + ev + '" is a reserved event name');
        }
        args.unshift(ev);
        const packet = {
            type: socket_io_parser_1.PacketType.EVENT,
            data: args,
        };
        packet.options = {};
        packet.options.compress = this.flags.compress !== false;
        // event ack callback
        if ("function" === typeof args[args.length - 1]) {
            const id = this.ids++;
            debug("emitting packet with ack id %d", id);
            const ack = args.pop();
            this._registerAckCallback(id, ack);
            packet.id = id;
        }
        const isTransportWritable = this.io.engine &&
            this.io.engine.transport &&
            this.io.engine.transport.writable;
        const discardPacket = this.flags.volatile && (!isTransportWritable || !this.connected);
        if (discardPacket) {
            debug("discard packet as the transport is not currently writable");
        }
        else if (this.connected) {
            this.packet(packet);
        }
        else {
            this.sendBuffer.push(packet);
        }
        this.flags = {};
        return this;
    }
    /**
     * @private
     */
    _registerAckCallback(id, ack) {
        const timeout = this.flags.timeout;
        if (timeout === undefined) {
            this.acks[id] = ack;
            return;
        }
        // @ts-ignore
        const timer = this.io.setTimeoutFn(() => {
            delete this.acks[id];
            for (let i = 0; i < this.sendBuffer.length; i++) {
                if (this.sendBuffer[i].id === id) {
                    debug("removing packet with ack id %d from the buffer", id);
                    this.sendBuffer.splice(i, 1);
                }
            }
            debug("event with ack id %d has timed out after %d ms", id, timeout);
            ack.call(this, new Error("operation has timed out"));
        }, timeout);
        this.acks[id] = (...args) => {
            // @ts-ignore
            this.io.clearTimeoutFn(timer);
            ack.apply(this, [null, ...args]);
        };
    }
    /**
     * Sends a packet.
     *
     * @param packet
     * @private
     */
    packet(packet) {
        packet.nsp = this.nsp;
        this.io._packet(packet);
    }
    /**
     * Called upon engine `open`.
     *
     * @private
     */
    onopen() {
        debug("transport is open - connecting");
        if (typeof this.auth == "function") {
            this.auth((data) => {
                this.packet({ type: socket_io_parser_1.PacketType.CONNECT, data });
            });
        }
        else {
            this.packet({ type: socket_io_parser_1.PacketType.CONNECT, data: this.auth });
        }
    }
    /**
     * Called upon engine or manager `error`.
     *
     * @param err
     * @private
     */
    onerror(err) {
        if (!this.connected) {
            this.emitReserved("connect_error", err);
        }
    }
    /**
     * Called upon engine `close`.
     *
     * @param reason
     * @private
     */
    onclose(reason) {
        debug("close (%s)", reason);
        this.connected = false;
        this.disconnected = true;
        delete this.id;
        this.emitReserved("disconnect", reason);
    }
    /**
     * Called with socket packet.
     *
     * @param packet
     * @private
     */
    onpacket(packet) {
        const sameNamespace = packet.nsp === this.nsp;
        if (!sameNamespace)
            return;
        switch (packet.type) {
            case socket_io_parser_1.PacketType.CONNECT:
                if (packet.data && packet.data.sid) {
                    const id = packet.data.sid;
                    this.onconnect(id);
                }
                else {
                    this.emitReserved("connect_error", new Error("It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)"));
                }
                break;
            case socket_io_parser_1.PacketType.EVENT:
                this.onevent(packet);
                break;
            case socket_io_parser_1.PacketType.BINARY_EVENT:
                this.onevent(packet);
                break;
            case socket_io_parser_1.PacketType.ACK:
                this.onack(packet);
                break;
            case socket_io_parser_1.PacketType.BINARY_ACK:
                this.onack(packet);
                break;
            case socket_io_parser_1.PacketType.DISCONNECT:
                this.ondisconnect();
                break;
            case socket_io_parser_1.PacketType.CONNECT_ERROR:
                this.destroy();
                const err = new Error(packet.data.message);
                // @ts-ignore
                err.data = packet.data.data;
                this.emitReserved("connect_error", err);
                break;
        }
    }
    /**
     * Called upon a server event.
     *
     * @param packet
     * @private
     */
    onevent(packet) {
        const args = packet.data || [];
        debug("emitting event %j", args);
        if (null != packet.id) {
            debug("attaching ack callback to event");
            args.push(this.ack(packet.id));
        }
        if (this.connected) {
            this.emitEvent(args);
        }
        else {
            this.receiveBuffer.push(Object.freeze(args));
        }
    }
    emitEvent(args) {
        if (this._anyListeners && this._anyListeners.length) {
            const listeners = this._anyListeners.slice();
            for (const listener of listeners) {
                listener.apply(this, args);
            }
        }
        super.emit.apply(this, args);
    }
    /**
     * Produces an ack callback to emit with an event.
     *
     * @private
     */
    ack(id) {
        const self = this;
        let sent = false;
        return function (...args) {
            // prevent double callbacks
            if (sent)
                return;
            sent = true;
            debug("sending ack %j", args);
            self.packet({
                type: socket_io_parser_1.PacketType.ACK,
                id: id,
                data: args,
            });
        };
    }
    /**
     * Called upon a server acknowlegement.
     *
     * @param packet
     * @private
     */
    onack(packet) {
        const ack = this.acks[packet.id];
        if ("function" === typeof ack) {
            debug("calling ack %s with %j", packet.id, packet.data);
            ack.apply(this, packet.data);
            delete this.acks[packet.id];
        }
        else {
            debug("bad ack %s", packet.id);
        }
    }
    /**
     * Called upon server connect.
     *
     * @private
     */
    onconnect(id) {
        debug("socket connected with id %s", id);
        this.id = id;
        this.connected = true;
        this.disconnected = false;
        this.emitBuffered();
        this.emitReserved("connect");
    }
    /**
     * Emit buffered events (received and emitted).
     *
     * @private
     */
    emitBuffered() {
        this.receiveBuffer.forEach((args) => this.emitEvent(args));
        this.receiveBuffer = [];
        this.sendBuffer.forEach((packet) => this.packet(packet));
        this.sendBuffer = [];
    }
    /**
     * Called upon server disconnect.
     *
     * @private
     */
    ondisconnect() {
        debug("server disconnect (%s)", this.nsp);
        this.destroy();
        this.onclose("io server disconnect");
    }
    /**
     * Called upon forced client/server side disconnections,
     * this method ensures the manager stops tracking us and
     * that reconnections don't get triggered for this.
     *
     * @private
     */
    destroy() {
        if (this.subs) {
            // clean subscriptions to avoid reconnections
            this.subs.forEach((subDestroy) => subDestroy());
            this.subs = undefined;
        }
        this.io["_destroy"](this);
    }
    /**
     * Disconnects the socket manually.
     *
     * @return self
     * @public
     */
    disconnect() {
        if (this.connected) {
            debug("performing disconnect (%s)", this.nsp);
            this.packet({ type: socket_io_parser_1.PacketType.DISCONNECT });
        }
        // remove socket from pool
        this.destroy();
        if (this.connected) {
            // fire events
            this.onclose("io client disconnect");
        }
        return this;
    }
    /**
     * Alias for disconnect()
     *
     * @return self
     * @public
     */
    close() {
        return this.disconnect();
    }
    /**
     * Sets the compress flag.
     *
     * @param compress - if `true`, compresses the sending data
     * @return self
     * @public
     */
    compress(compress) {
        this.flags.compress = compress;
        return this;
    }
    /**
     * Sets a modifier for a subsequent event emission that the event message will be dropped when this socket is not
     * ready to send messages.
     *
     * @returns self
     * @public
     */
    get volatile() {
        this.flags.volatile = true;
        return this;
    }
    /**
     * Sets a modifier for a subsequent event emission that the callback will be called with an error when the
     * given number of milliseconds have elapsed without an acknowledgement from the server:
     *
     * ```
     * socket.timeout(5000).emit("my-event", (err) => {
     *   if (err) {
     *     // the server did not acknowledge the event in the given delay
     *   }
     * });
     * ```
     *
     * @returns self
     * @public
     */
    timeout(timeout) {
        this.flags.timeout = timeout;
        return this;
    }
    /**
     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
     * callback.
     *
     * @param listener
     * @public
     */
    onAny(listener) {
        this._anyListeners = this._anyListeners || [];
        this._anyListeners.push(listener);
        return this;
    }
    /**
     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
     * callback. The listener is added to the beginning of the listeners array.
     *
     * @param listener
     * @public
     */
    prependAny(listener) {
        this._anyListeners = this._anyListeners || [];
        this._anyListeners.unshift(listener);
        return this;
    }
    /**
     * Removes the listener that will be fired when any event is emitted.
     *
     * @param listener
     * @public
     */
    offAny(listener) {
        if (!this._anyListeners) {
            return this;
        }
        if (listener) {
            const listeners = this._anyListeners;
            for (let i = 0; i < listeners.length; i++) {
                if (listener === listeners[i]) {
                    listeners.splice(i, 1);
                    return this;
                }
            }
        }
        else {
            this._anyListeners = [];
        }
        return this;
    }
    /**
     * Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,
     * e.g. to remove listeners.
     *
     * @public
     */
    listenersAny() {
        return this._anyListeners || [];
    }
}
exports.Socket = Socket;

},{"./on.js":162,"@socket.io/component-emitter":35,"debug":55,"socket.io-parser":166}],164:[function(require,module,exports){
"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.url = void 0;
const parseuri_1 = __importDefault(require("parseuri"));
const debug_1 = __importDefault(require("debug")); // debug()
const debug = debug_1.default("socket.io-client:url"); // debug()
/**
 * URL parser.
 *
 * @param uri - url
 * @param path - the request path of the connection
 * @param loc - An object meant to mimic window.location.
 *        Defaults to window.location.
 * @public
 */
function url(uri, path = "", loc) {
    let obj = uri;
    // default to window.location
    loc = loc || (typeof location !== "undefined" && location);
    if (null == uri)
        uri = loc.protocol + "//" + loc.host;
    // relative path support
    if (typeof uri === "string") {
        if ("/" === uri.charAt(0)) {
            if ("/" === uri.charAt(1)) {
                uri = loc.protocol + uri;
            }
            else {
                uri = loc.host + uri;
            }
        }
        if (!/^(https?|wss?):\/\//.test(uri)) {
            debug("protocol-less url %s", uri);
            if ("undefined" !== typeof loc) {
                uri = loc.protocol + "//" + uri;
            }
            else {
                uri = "https://" + uri;
            }
        }
        // parse
        debug("parse %s", uri);
        obj = parseuri_1.default(uri);
    }
    // make sure we treat `localhost:80` and `localhost` equally
    if (!obj.port) {
        if (/^(http|ws)$/.test(obj.protocol)) {
            obj.port = "80";
        }
        else if (/^(http|ws)s$/.test(obj.protocol)) {
            obj.port = "443";
        }
    }
    obj.path = obj.path || "/";
    const ipv6 = obj.host.indexOf(":") !== -1;
    const host = ipv6 ? "[" + obj.host + "]" : obj.host;
    // define unique id
    obj.id = obj.protocol + "://" + host + ":" + obj.port + path;
    // define href
    obj.href =
        obj.protocol +
            "://" +
            host +
            (loc && loc.port === obj.port ? "" : ":" + obj.port);
    return obj;
}
exports.url = url;

},{"debug":55,"parseuri":118}],165:[function(require,module,exports){
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.reconstructPacket = exports.deconstructPacket = void 0;
const is_binary_js_1 = require("./is-binary.js");
/**
 * Replaces every Buffer | ArrayBuffer | Blob | File in packet with a numbered placeholder.
 *
 * @param {Object} packet - socket.io event packet
 * @return {Object} with deconstructed packet and list of buffers
 * @public
 */
function deconstructPacket(packet) {
    const buffers = [];
    const packetData = packet.data;
    const pack = packet;
    pack.data = _deconstructPacket(packetData, buffers);
    pack.attachments = buffers.length; // number of binary 'attachments'
    return { packet: pack, buffers: buffers };
}
exports.deconstructPacket = deconstructPacket;
function _deconstructPacket(data, buffers) {
    if (!data)
        return data;
    if (is_binary_js_1.isBinary(data)) {
        const placeholder = { _placeholder: true, num: buffers.length };
        buffers.push(data);
        return placeholder;
    }
    else if (Array.isArray(data)) {
        const newData = new Array(data.length);
        for (let i = 0; i < data.length; i++) {
            newData[i] = _deconstructPacket(data[i], buffers);
        }
        return newData;
    }
    else if (typeof data === "object" && !(data instanceof Date)) {
        const newData = {};
        for (const key in data) {
            if (data.hasOwnProperty(key)) {
                newData[key] = _deconstructPacket(data[key], buffers);
            }
        }
        return newData;
    }
    return data;
}
/**
 * Reconstructs a binary packet from its placeholder packet and buffers
 *
 * @param {Object} packet - event packet with placeholders
 * @param {Array} buffers - binary buffers to put in placeholder positions
 * @return {Object} reconstructed packet
 * @public
 */
function reconstructPacket(packet, buffers) {
    packet.data = _reconstructPacket(packet.data, buffers);
    packet.attachments = undefined; // no longer useful
    return packet;
}
exports.reconstructPacket = reconstructPacket;
function _reconstructPacket(data, buffers) {
    if (!data)
        return data;
    if (data && data._placeholder) {
        return buffers[data.num]; // appropriate buffer (should be natural order anyway)
    }
    else if (Array.isArray(data)) {
        for (let i = 0; i < data.length; i++) {
            data[i] = _reconstructPacket(data[i], buffers);
        }
    }
    else if (typeof data === "object") {
        for (const key in data) {
            if (data.hasOwnProperty(key)) {
                data[key] = _reconstructPacket(data[key], buffers);
            }
        }
    }
    return data;
}

},{"./is-binary.js":167}],166:[function(require,module,exports){
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Decoder = exports.Encoder = exports.PacketType = exports.protocol = void 0;
const component_emitter_1 = require("@socket.io/component-emitter");
const binary_js_1 = require("./binary.js");
const is_binary_js_1 = require("./is-binary.js");
const debug_1 = require("debug"); // debug()
const debug = debug_1.default("socket.io-parser"); // debug()
/**
 * Protocol version.
 *
 * @public
 */
exports.protocol = 5;
var PacketType;
(function (PacketType) {
    PacketType[PacketType["CONNECT"] = 0] = "CONNECT";
    PacketType[PacketType["DISCONNECT"] = 1] = "DISCONNECT";
    PacketType[PacketType["EVENT"] = 2] = "EVENT";
    PacketType[PacketType["ACK"] = 3] = "ACK";
    PacketType[PacketType["CONNECT_ERROR"] = 4] = "CONNECT_ERROR";
    PacketType[PacketType["BINARY_EVENT"] = 5] = "BINARY_EVENT";
    PacketType[PacketType["BINARY_ACK"] = 6] = "BINARY_ACK";
})(PacketType = exports.PacketType || (exports.PacketType = {}));
/**
 * A socket.io Encoder instance
 */
class Encoder {
    /**
     * Encode a packet as a single string if non-binary, or as a
     * buffer sequence, depending on packet type.
     *
     * @param {Object} obj - packet object
     */
    encode(obj) {
        debug("encoding packet %j", obj);
        if (obj.type === PacketType.EVENT || obj.type === PacketType.ACK) {
            if (is_binary_js_1.hasBinary(obj)) {
                obj.type =
                    obj.type === PacketType.EVENT
                        ? PacketType.BINARY_EVENT
                        : PacketType.BINARY_ACK;
                return this.encodeAsBinary(obj);
            }
        }
        return [this.encodeAsString(obj)];
    }
    /**
     * Encode packet as string.
     */
    encodeAsString(obj) {
        // first is type
        let str = "" + obj.type;
        // attachments if we have them
        if (obj.type === PacketType.BINARY_EVENT ||
            obj.type === PacketType.BINARY_ACK) {
            str += obj.attachments + "-";
        }
        // if we have a namespace other than `/`
        // we append it followed by a comma `,`
        if (obj.nsp && "/" !== obj.nsp) {
            str += obj.nsp + ",";
        }
        // immediately followed by the id
        if (null != obj.id) {
            str += obj.id;
        }
        // json data
        if (null != obj.data) {
            str += JSON.stringify(obj.data);
        }
        debug("encoded %j as %s", obj, str);
        return str;
    }
    /**
     * Encode packet as 'buffer sequence' by removing blobs, and
     * deconstructing packet into object with placeholders and
     * a list of buffers.
     */
    encodeAsBinary(obj) {
        const deconstruction = binary_js_1.deconstructPacket(obj);
        const pack = this.encodeAsString(deconstruction.packet);
        const buffers = deconstruction.buffers;
        buffers.unshift(pack); // add packet info to beginning of data list
        return buffers; // write all the buffers
    }
}
exports.Encoder = Encoder;
/**
 * A socket.io Decoder instance
 *
 * @return {Object} decoder
 */
class Decoder extends component_emitter_1.Emitter {
    constructor() {
        super();
    }
    /**
     * Decodes an encoded packet string into packet JSON.
     *
     * @param {String} obj - encoded packet
     */
    add(obj) {
        let packet;
        if (typeof obj === "string") {
            packet = this.decodeString(obj);
            if (packet.type === PacketType.BINARY_EVENT ||
                packet.type === PacketType.BINARY_ACK) {
                // binary packet's json
                this.reconstructor = new BinaryReconstructor(packet);
                // no attachments, labeled binary but no binary data to follow
                if (packet.attachments === 0) {
                    super.emitReserved("decoded", packet);
                }
            }
            else {
                // non-binary full packet
                super.emitReserved("decoded", packet);
            }
        }
        else if (is_binary_js_1.isBinary(obj) || obj.base64) {
            // raw binary data
            if (!this.reconstructor) {
                throw new Error("got binary data when not reconstructing a packet");
            }
            else {
                packet = this.reconstructor.takeBinaryData(obj);
                if (packet) {
                    // received final buffer
                    this.reconstructor = null;
                    super.emitReserved("decoded", packet);
                }
            }
        }
        else {
            throw new Error("Unknown type: " + obj);
        }
    }
    /**
     * Decode a packet String (JSON data)
     *
     * @param {String} str
     * @return {Object} packet
     */
    decodeString(str) {
        let i = 0;
        // look up type
        const p = {
            type: Number(str.charAt(0)),
        };
        if (PacketType[p.type] === undefined) {
            throw new Error("unknown packet type " + p.type);
        }
        // look up attachments if type binary
        if (p.type === PacketType.BINARY_EVENT ||
            p.type === PacketType.BINARY_ACK) {
            const start = i + 1;
            while (str.charAt(++i) !== "-" && i != str.length) { }
            const buf = str.substring(start, i);
            if (buf != Number(buf) || str.charAt(i) !== "-") {
                throw new Error("Illegal attachments");
            }
            p.attachments = Number(buf);
        }
        // look up namespace (if any)
        if ("/" === str.charAt(i + 1)) {
            const start = i + 1;
            while (++i) {
                const c = str.charAt(i);
                if ("," === c)
                    break;
                if (i === str.length)
                    break;
            }
            p.nsp = str.substring(start, i);
        }
        else {
            p.nsp = "/";
        }
        // look up id
        const next = str.charAt(i + 1);
        if ("" !== next && Number(next) == next) {
            const start = i + 1;
            while (++i) {
                const c = str.charAt(i);
                if (null == c || Number(c) != c) {
                    --i;
                    break;
                }
                if (i === str.length)
                    break;
            }
            p.id = Number(str.substring(start, i + 1));
        }
        // look up json data
        if (str.charAt(++i)) {
            const payload = tryParse(str.substr(i));
            if (Decoder.isPayloadValid(p.type, payload)) {
                p.data = payload;
            }
            else {
                throw new Error("invalid payload");
            }
        }
        debug("decoded %s as %j", str, p);
        return p;
    }
    static isPayloadValid(type, payload) {
        switch (type) {
            case PacketType.CONNECT:
                return typeof payload === "object";
            case PacketType.DISCONNECT:
                return payload === undefined;
            case PacketType.CONNECT_ERROR:
                return typeof payload === "string" || typeof payload === "object";
            case PacketType.EVENT:
            case PacketType.BINARY_EVENT:
                return Array.isArray(payload) && payload.length > 0;
            case PacketType.ACK:
            case PacketType.BINARY_ACK:
                return Array.isArray(payload);
        }
    }
    /**
     * Deallocates a parser's resources
     */
    destroy() {
        if (this.reconstructor) {
            this.reconstructor.finishedReconstruction();
        }
    }
}
exports.Decoder = Decoder;
function tryParse(str) {
    try {
        return JSON.parse(str);
    }
    catch (e) {
        return false;
    }
}
/**
 * A manager of a binary event's 'buffer sequence'. Should
 * be constructed whenever a packet of type BINARY_EVENT is
 * decoded.
 *
 * @param {Object} packet
 * @return {BinaryReconstructor} initialized reconstructor
 */
class BinaryReconstructor {
    constructor(packet) {
        this.packet = packet;
        this.buffers = [];
        this.reconPack = packet;
    }
    /**
     * Method to be called when binary data received from connection
     * after a BINARY_EVENT packet.
     *
     * @param {Buffer | ArrayBuffer} binData - the raw binary data received
     * @return {null | Object} returns null if more binary data is expected or
     *   a reconstructed packet object if all buffers have been received.
     */
    takeBinaryData(binData) {
        this.buffers.push(binData);
        if (this.buffers.length === this.reconPack.attachments) {
            // done with buffer list
            const packet = binary_js_1.reconstructPacket(this.reconPack, this.buffers);
            this.finishedReconstruction();
            return packet;
        }
        return null;
    }
    /**
     * Cleans up binary packet reconstruction variables.
     */
    finishedReconstruction() {
        this.reconPack = null;
        this.buffers = [];
    }
}

},{"./binary.js":165,"./is-binary.js":167,"@socket.io/component-emitter":35,"debug":55}],167:[function(require,module,exports){
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.hasBinary = exports.isBinary = void 0;
const withNativeArrayBuffer = typeof ArrayBuffer === "function";
const isView = (obj) => {
    return typeof ArrayBuffer.isView === "function"
        ? ArrayBuffer.isView(obj)
        : obj.buffer instanceof ArrayBuffer;
};
const toString = Object.prototype.toString;
const withNativeBlob = typeof Blob === "function" ||
    (typeof Blob !== "undefined" &&
        toString.call(Blob) === "[object BlobConstructor]");
const withNativeFile = typeof File === "function" ||
    (typeof File !== "undefined" &&
        toString.call(File) === "[object FileConstructor]");
/**
 * Returns true if obj is a Buffer, an ArrayBuffer, a Blob or a File.
 *
 * @private
 */
function isBinary(obj) {
    return ((withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj))) ||
        (withNativeBlob && obj instanceof Blob) ||
        (withNativeFile && obj instanceof File));
}
exports.isBinary = isBinary;
function hasBinary(obj, toJSON) {
    if (!obj || typeof obj !== "object") {
        return false;
    }
    if (Array.isArray(obj)) {
        for (let i = 0, l = obj.length; i < l; i++) {
            if (hasBinary(obj[i])) {
                return true;
            }
        }
        return false;
    }
    if (isBinary(obj)) {
        return true;
    }
    if (obj.toJSON &&
        typeof obj.toJSON === "function" &&
        arguments.length === 1) {
        return hasBinary(obj.toJSON(), true);
    }
    for (const key in obj) {
        if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {
            return true;
        }
    }
    return false;
}
exports.hasBinary = hasBinary;

},{}],168:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

/*<replacement>*/

var Buffer = require('safe-buffer').Buffer;
/*</replacement>*/

var isEncoding = Buffer.isEncoding || function (encoding) {
  encoding = '' + encoding;
  switch (encoding && encoding.toLowerCase()) {
    case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw':
      return true;
    default:
      return false;
  }
};

function _normalizeEncoding(enc) {
  if (!enc) return 'utf8';
  var retried;
  while (true) {
    switch (enc) {
      case 'utf8':
      case 'utf-8':
        return 'utf8';
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return 'utf16le';
      case 'latin1':
      case 'binary':
        return 'latin1';
      case 'base64':
      case 'ascii':
      case 'hex':
        return enc;
      default:
        if (retried) return; // undefined
        enc = ('' + enc).toLowerCase();
        retried = true;
    }
  }
};

// Do not cache `Buffer.isEncoding` when checking encoding names as some
// modules monkey-patch it to support additional encodings
function normalizeEncoding(enc) {
  var nenc = _normalizeEncoding(enc);
  if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);
  return nenc || enc;
}

// StringDecoder provides an interface for efficiently splitting a series of
// buffers into a series of JS strings without breaking apart multi-byte
// characters.
exports.StringDecoder = StringDecoder;
function StringDecoder(encoding) {
  this.encoding = normalizeEncoding(encoding);
  var nb;
  switch (this.encoding) {
    case 'utf16le':
      this.text = utf16Text;
      this.end = utf16End;
      nb = 4;
      break;
    case 'utf8':
      this.fillLast = utf8FillLast;
      nb = 4;
      break;
    case 'base64':
      this.text = base64Text;
      this.end = base64End;
      nb = 3;
      break;
    default:
      this.write = simpleWrite;
      this.end = simpleEnd;
      return;
  }
  this.lastNeed = 0;
  this.lastTotal = 0;
  this.lastChar = Buffer.allocUnsafe(nb);
}

StringDecoder.prototype.write = function (buf) {
  if (buf.length === 0) return '';
  var r;
  var i;
  if (this.lastNeed) {
    r = this.fillLast(buf);
    if (r === undefined) return '';
    i = this.lastNeed;
    this.lastNeed = 0;
  } else {
    i = 0;
  }
  if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);
  return r || '';
};

StringDecoder.prototype.end = utf8End;

// Returns only complete characters in a Buffer
StringDecoder.prototype.text = utf8Text;

// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer
StringDecoder.prototype.fillLast = function (buf) {
  if (this.lastNeed <= buf.length) {
    buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);
    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
  }
  buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);
  this.lastNeed -= buf.length;
};

// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a
// continuation byte. If an invalid byte is detected, -2 is returned.
function utf8CheckByte(byte) {
  if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;
  return byte >> 6 === 0x02 ? -1 : -2;
}

// Checks at most 3 bytes at the end of a Buffer in order to detect an
// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)
// needed to complete the UTF-8 character (if applicable) are returned.
function utf8CheckIncomplete(self, buf, i) {
  var j = buf.length - 1;
  if (j < i) return 0;
  var nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) self.lastNeed = nb - 1;
    return nb;
  }
  if (--j < i || nb === -2) return 0;
  nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) self.lastNeed = nb - 2;
    return nb;
  }
  if (--j < i || nb === -2) return 0;
  nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) {
      if (nb === 2) nb = 0;else self.lastNeed = nb - 3;
    }
    return nb;
  }
  return 0;
}

// Validates as many continuation bytes for a multi-byte UTF-8 character as
// needed or are available. If we see a non-continuation byte where we expect
// one, we "replace" the validated continuation bytes we've seen so far with
// a single UTF-8 replacement character ('\ufffd'), to match v8's UTF-8 decoding
// behavior. The continuation byte check is included three times in the case
// where all of the continuation bytes for a character exist in the same buffer.
// It is also done this way as a slight performance increase instead of using a
// loop.
function utf8CheckExtraBytes(self, buf, p) {
  if ((buf[0] & 0xC0) !== 0x80) {
    self.lastNeed = 0;
    return '\ufffd';
  }
  if (self.lastNeed > 1 && buf.length > 1) {
    if ((buf[1] & 0xC0) !== 0x80) {
      self.lastNeed = 1;
      return '\ufffd';
    }
    if (self.lastNeed > 2 && buf.length > 2) {
      if ((buf[2] & 0xC0) !== 0x80) {
        self.lastNeed = 2;
        return '\ufffd';
      }
    }
  }
}

// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.
function utf8FillLast(buf) {
  var p = this.lastTotal - this.lastNeed;
  var r = utf8CheckExtraBytes(this, buf, p);
  if (r !== undefined) return r;
  if (this.lastNeed <= buf.length) {
    buf.copy(this.lastChar, p, 0, this.lastNeed);
    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
  }
  buf.copy(this.lastChar, p, 0, buf.length);
  this.lastNeed -= buf.length;
}

// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a
// partial character, the character's bytes are buffered until the required
// number of bytes are available.
function utf8Text(buf, i) {
  var total = utf8CheckIncomplete(this, buf, i);
  if (!this.lastNeed) return buf.toString('utf8', i);
  this.lastTotal = total;
  var end = buf.length - (total - this.lastNeed);
  buf.copy(this.lastChar, 0, end);
  return buf.toString('utf8', i, end);
}

// For UTF-8, a replacement character is added when ending on a partial
// character.
function utf8End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) return r + '\ufffd';
  return r;
}

// UTF-16LE typically needs two bytes per character, but even if we have an even
// number of bytes available, we need to check if we end on a leading/high
// surrogate. In that case, we need to wait for the next two bytes in order to
// decode the last character properly.
function utf16Text(buf, i) {
  if ((buf.length - i) % 2 === 0) {
    var r = buf.toString('utf16le', i);
    if (r) {
      var c = r.charCodeAt(r.length - 1);
      if (c >= 0xD800 && c <= 0xDBFF) {
        this.lastNeed = 2;
        this.lastTotal = 4;
        this.lastChar[0] = buf[buf.length - 2];
        this.lastChar[1] = buf[buf.length - 1];
        return r.slice(0, -1);
      }
    }
    return r;
  }
  this.lastNeed = 1;
  this.lastTotal = 2;
  this.lastChar[0] = buf[buf.length - 1];
  return buf.toString('utf16le', i, buf.length - 1);
}

// For UTF-16LE we do not explicitly append special replacement characters if we
// end on a partial character, we simply let v8 handle that.
function utf16End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) {
    var end = this.lastTotal - this.lastNeed;
    return r + this.lastChar.toString('utf16le', 0, end);
  }
  return r;
}

function base64Text(buf, i) {
  var n = (buf.length - i) % 3;
  if (n === 0) return buf.toString('base64', i);
  this.lastNeed = 3 - n;
  this.lastTotal = 3;
  if (n === 1) {
    this.lastChar[0] = buf[buf.length - 1];
  } else {
    this.lastChar[0] = buf[buf.length - 2];
    this.lastChar[1] = buf[buf.length - 1];
  }
  return buf.toString('base64', i, buf.length - n);
}

function base64End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);
  return r;
}

// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)
function simpleWrite(buf) {
  return buf.toString(this.encoding);
}

function simpleEnd(buf) {
  return buf && buf.length ? this.write(buf) : '';
}
},{"safe-buffer":133}],169:[function(require,module,exports){
"use strict";

function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }

function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }

function _iterableToArray(iter) { if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter); }

function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }

function _createForOfIteratorHelper(o, allowArrayLike) { var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"]; if (!it) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = it.call(o); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it.return != null) it.return(); } finally { if (didErr) throw err; } } }; }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

function Agent() {
  this._defaults = [];
}

var _loop = function _loop() {
  var fn = _arr[_i];

  // Default setting for all requests from this agent
  Agent.prototype[fn] = function () {
    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    this._defaults.push({
      fn: fn,
      args: args
    });

    return this;
  };
};

for (var _i = 0, _arr = ['use', 'on', 'once', 'set', 'query', 'type', 'accept', 'auth', 'withCredentials', 'sortQuery', 'retry', 'ok', 'redirects', 'timeout', 'buffer', 'serialize', 'parse', 'ca', 'key', 'pfx', 'cert', 'disableTLSCerts']; _i < _arr.length; _i++) {
  _loop();
}

Agent.prototype._setDefaults = function (request) {
  var _iterator = _createForOfIteratorHelper(this._defaults),
      _step;

  try {
    for (_iterator.s(); !(_step = _iterator.n()).done;) {
      var def = _step.value;
      request[def.fn].apply(request, _toConsumableArray(def.args));
    }
  } catch (err) {
    _iterator.e(err);
  } finally {
    _iterator.f();
  }
};

module.exports = Agent;

},{}],170:[function(require,module,exports){
"use strict";

function _typeof(obj) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }, _typeof(obj); }

function _createForOfIteratorHelper(o, allowArrayLike) { var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"]; if (!it) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = it.call(o); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it.return != null) it.return(); } finally { if (didErr) throw err; } } }; }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

/**
 * Root reference for iframes.
 */
var root;

if (typeof window !== 'undefined') {
  // Browser window
  root = window;
} else if (typeof self === 'undefined') {
  // Other environments
  console.warn('Using browser-only version of superagent in non-browser environment');
  root = void 0;
} else {
  // Web Worker
  root = self;
}

var Emitter = require('component-emitter');

var safeStringify = require('fast-safe-stringify');

var qs = require('qs');

var RequestBase = require('./request-base');

var isObject = require('./is-object');

var ResponseBase = require('./response-base');

var Agent = require('./agent-base');
/**
 * Noop.
 */


function noop() {}
/**
 * Expose `request`.
 */


module.exports = function (method, url) {
  // callback
  if (typeof url === 'function') {
    return new exports.Request('GET', method).end(url);
  } // url first


  if (arguments.length === 1) {
    return new exports.Request('GET', method);
  }

  return new exports.Request(method, url);
};

exports = module.exports;
var request = exports;
exports.Request = Request;
/**
 * Determine XHR.
 */

request.getXHR = function () {
  if (root.XMLHttpRequest && (!root.location || root.location.protocol !== 'file:' || !root.ActiveXObject)) {
    return new XMLHttpRequest();
  }

  try {
    return new ActiveXObject('Microsoft.XMLHTTP');
  } catch (_unused) {}

  try {
    return new ActiveXObject('Msxml2.XMLHTTP.6.0');
  } catch (_unused2) {}

  try {
    return new ActiveXObject('Msxml2.XMLHTTP.3.0');
  } catch (_unused3) {}

  try {
    return new ActiveXObject('Msxml2.XMLHTTP');
  } catch (_unused4) {}

  throw new Error('Browser-only version of superagent could not find XHR');
};
/**
 * Removes leading and trailing whitespace, added to support IE.
 *
 * @param {String} s
 * @return {String}
 * @api private
 */


var trim = ''.trim ? function (s) {
  return s.trim();
} : function (s) {
  return s.replace(/(^\s*|\s*$)/g, '');
};
/**
 * Serialize the given `obj`.
 *
 * @param {Object} obj
 * @return {String}
 * @api private
 */

function serialize(object) {
  if (!isObject(object)) return object;
  var pairs = [];

  for (var key in object) {
    if (Object.prototype.hasOwnProperty.call(object, key)) pushEncodedKeyValuePair(pairs, key, object[key]);
  }

  return pairs.join('&');
}
/**
 * Helps 'serialize' with serializing arrays.
 * Mutates the pairs array.
 *
 * @param {Array} pairs
 * @param {String} key
 * @param {Mixed} val
 */


function pushEncodedKeyValuePair(pairs, key, value) {
  if (value === undefined) return;

  if (value === null) {
    pairs.push(encodeURI(key));
    return;
  }

  if (Array.isArray(value)) {
    var _iterator = _createForOfIteratorHelper(value),
        _step;

    try {
      for (_iterator.s(); !(_step = _iterator.n()).done;) {
        var v = _step.value;
        pushEncodedKeyValuePair(pairs, key, v);
      }
    } catch (err) {
      _iterator.e(err);
    } finally {
      _iterator.f();
    }
  } else if (isObject(value)) {
    for (var subkey in value) {
      if (Object.prototype.hasOwnProperty.call(value, subkey)) pushEncodedKeyValuePair(pairs, "".concat(key, "[").concat(subkey, "]"), value[subkey]);
    }
  } else {
    pairs.push(encodeURI(key) + '=' + encodeURIComponent(value));
  }
}
/**
 * Expose serialization method.
 */


request.serializeObject = serialize;
/**
 * Parse the given x-www-form-urlencoded `str`.
 *
 * @param {String} str
 * @return {Object}
 * @api private
 */

function parseString(string_) {
  var object = {};
  var pairs = string_.split('&');
  var pair;
  var pos;

  for (var i = 0, length_ = pairs.length; i < length_; ++i) {
    pair = pairs[i];
    pos = pair.indexOf('=');

    if (pos === -1) {
      object[decodeURIComponent(pair)] = '';
    } else {
      object[decodeURIComponent(pair.slice(0, pos))] = decodeURIComponent(pair.slice(pos + 1));
    }
  }

  return object;
}
/**
 * Expose parser.
 */


request.parseString = parseString;
/**
 * Default MIME type map.
 *
 *     superagent.types.xml = 'application/xml';
 *
 */

request.types = {
  html: 'text/html',
  json: 'application/json',
  xml: 'text/xml',
  urlencoded: 'application/x-www-form-urlencoded',
  form: 'application/x-www-form-urlencoded',
  'form-data': 'application/x-www-form-urlencoded'
};
/**
 * Default serialization map.
 *
 *     superagent.serialize['application/xml'] = function(obj){
 *       return 'generated xml here';
 *     };
 *
 */

request.serialize = {
  'application/x-www-form-urlencoded': qs.stringify,
  'application/json': safeStringify
};
/**
 * Default parsers.
 *
 *     superagent.parse['application/xml'] = function(str){
 *       return { object parsed from str };
 *     };
 *
 */

request.parse = {
  'application/x-www-form-urlencoded': parseString,
  'application/json': JSON.parse
};
/**
 * Parse the given header `str` into
 * an object containing the mapped fields.
 *
 * @param {String} str
 * @return {Object}
 * @api private
 */

function parseHeader(string_) {
  var lines = string_.split(/\r?\n/);
  var fields = {};
  var index;
  var line;
  var field;
  var value;

  for (var i = 0, length_ = lines.length; i < length_; ++i) {
    line = lines[i];
    index = line.indexOf(':');

    if (index === -1) {
      // could be empty line, just skip it
      continue;
    }

    field = line.slice(0, index).toLowerCase();
    value = trim(line.slice(index + 1));
    fields[field] = value;
  }

  return fields;
}
/**
 * Check if `mime` is json or has +json structured syntax suffix.
 *
 * @param {String} mime
 * @return {Boolean}
 * @api private
 */


function isJSON(mime) {
  // should match /json or +json
  // but not /json-seq
  return /[/+]json($|[^-\w])/i.test(mime);
}
/**
 * Initialize a new `Response` with the given `xhr`.
 *
 *  - set flags (.ok, .error, etc)
 *  - parse header
 *
 * Examples:
 *
 *  Aliasing `superagent` as `request` is nice:
 *
 *      request = superagent;
 *
 *  We can use the promise-like API, or pass callbacks:
 *
 *      request.get('/').end(function(res){});
 *      request.get('/', function(res){});
 *
 *  Sending data can be chained:
 *
 *      request
 *        .post('/user')
 *        .send({ name: 'tj' })
 *        .end(function(res){});
 *
 *  Or passed to `.send()`:
 *
 *      request
 *        .post('/user')
 *        .send({ name: 'tj' }, function(res){});
 *
 *  Or passed to `.post()`:
 *
 *      request
 *        .post('/user', { name: 'tj' })
 *        .end(function(res){});
 *
 * Or further reduced to a single call for simple cases:
 *
 *      request
 *        .post('/user', { name: 'tj' }, function(res){});
 *
 * @param {XMLHTTPRequest} xhr
 * @param {Object} options
 * @api private
 */


function Response(request_) {
  this.req = request_;
  this.xhr = this.req.xhr; // responseText is accessible only if responseType is '' or 'text' and on older browsers

  this.text = this.req.method !== 'HEAD' && (this.xhr.responseType === '' || this.xhr.responseType === 'text') || typeof this.xhr.responseType === 'undefined' ? this.xhr.responseText : null;
  this.statusText = this.req.xhr.statusText;
  var status = this.xhr.status; // handle IE9 bug: http://stackoverflow.com/questions/10046972/msie-returns-status-code-of-1223-for-ajax-request

  if (status === 1223) {
    status = 204;
  }

  this._setStatusProperties(status);

  this.headers = parseHeader(this.xhr.getAllResponseHeaders());
  this.header = this.headers; // getAllResponseHeaders sometimes falsely returns "" for CORS requests, but
  // getResponseHeader still works. so we get content-type even if getting
  // other headers fails.

  this.header['content-type'] = this.xhr.getResponseHeader('content-type');

  this._setHeaderProperties(this.header);

  if (this.text === null && request_._responseType) {
    this.body = this.xhr.response;
  } else {
    this.body = this.req.method === 'HEAD' ? null : this._parseBody(this.text ? this.text : this.xhr.response);
  }
} // eslint-disable-next-line new-cap


ResponseBase(Response.prototype);
/**
 * Parse the given body `str`.
 *
 * Used for auto-parsing of bodies. Parsers
 * are defined on the `superagent.parse` object.
 *
 * @param {String} str
 * @return {Mixed}
 * @api private
 */

Response.prototype._parseBody = function (string_) {
  var parse = request.parse[this.type];

  if (this.req._parser) {
    return this.req._parser(this, string_);
  }

  if (!parse && isJSON(this.type)) {
    parse = request.parse['application/json'];
  }

  return parse && string_ && (string_.length > 0 || string_ instanceof Object) ? parse(string_) : null;
};
/**
 * Return an `Error` representative of this response.
 *
 * @return {Error}
 * @api public
 */


Response.prototype.toError = function () {
  var req = this.req;
  var method = req.method;
  var url = req.url;
  var message = "cannot ".concat(method, " ").concat(url, " (").concat(this.status, ")");
  var error = new Error(message);
  error.status = this.status;
  error.method = method;
  error.url = url;
  return error;
};
/**
 * Expose `Response`.
 */


request.Response = Response;
/**
 * Initialize a new `Request` with the given `method` and `url`.
 *
 * @param {String} method
 * @param {String} url
 * @api public
 */

function Request(method, url) {
  var self = this;
  this._query = this._query || [];
  this.method = method;
  this.url = url;
  this.header = {}; // preserves header name case

  this._header = {}; // coerces header names to lowercase

  this.on('end', function () {
    var error = null;
    var res = null;

    try {
      res = new Response(self);
    } catch (error_) {
      error = new Error('Parser is unable to parse the response');
      error.parse = true;
      error.original = error_; // issue #675: return the raw response if the response parsing fails

      if (self.xhr) {
        // ie9 doesn't have 'response' property
        error.rawResponse = typeof self.xhr.responseType === 'undefined' ? self.xhr.responseText : self.xhr.response; // issue #876: return the http status code if the response parsing fails

        error.status = self.xhr.status ? self.xhr.status : null;
        error.statusCode = error.status; // backwards-compat only
      } else {
        error.rawResponse = null;
        error.status = null;
      }

      return self.callback(error);
    }

    self.emit('response', res);
    var new_error;

    try {
      if (!self._isResponseOK(res)) {
        new_error = new Error(res.statusText || res.text || 'Unsuccessful HTTP response');
      }
    } catch (err) {
      new_error = err; // ok() callback can throw
    } // #1000 don't catch errors from the callback to avoid double calling it


    if (new_error) {
      new_error.original = error;
      new_error.response = res;
      new_error.status = res.status;
      self.callback(new_error, res);
    } else {
      self.callback(null, res);
    }
  });
}
/**
 * Mixin `Emitter` and `RequestBase`.
 */
// eslint-disable-next-line new-cap


Emitter(Request.prototype); // eslint-disable-next-line new-cap

RequestBase(Request.prototype);
/**
 * Set Content-Type to `type`, mapping values from `request.types`.
 *
 * Examples:
 *
 *      superagent.types.xml = 'application/xml';
 *
 *      request.post('/')
 *        .type('xml')
 *        .send(xmlstring)
 *        .end(callback);
 *
 *      request.post('/')
 *        .type('application/xml')
 *        .send(xmlstring)
 *        .end(callback);
 *
 * @param {String} type
 * @return {Request} for chaining
 * @api public
 */

Request.prototype.type = function (type) {
  this.set('Content-Type', request.types[type] || type);
  return this;
};
/**
 * Set Accept to `type`, mapping values from `request.types`.
 *
 * Examples:
 *
 *      superagent.types.json = 'application/json';
 *
 *      request.get('/agent')
 *        .accept('json')
 *        .end(callback);
 *
 *      request.get('/agent')
 *        .accept('application/json')
 *        .end(callback);
 *
 * @param {String} accept
 * @return {Request} for chaining
 * @api public
 */


Request.prototype.accept = function (type) {
  this.set('Accept', request.types[type] || type);
  return this;
};
/**
 * Set Authorization field value with `user` and `pass`.
 *
 * @param {String} user
 * @param {String} [pass] optional in case of using 'bearer' as type
 * @param {Object} options with 'type' property 'auto', 'basic' or 'bearer' (default 'basic')
 * @return {Request} for chaining
 * @api public
 */


Request.prototype.auth = function (user, pass, options) {
  if (arguments.length === 1) pass = '';

  if (_typeof(pass) === 'object' && pass !== null) {
    // pass is optional and can be replaced with options
    options = pass;
    pass = '';
  }

  if (!options) {
    options = {
      type: typeof btoa === 'function' ? 'basic' : 'auto'
    };
  }

  var encoder = function encoder(string) {
    if (typeof btoa === 'function') {
      return btoa(string);
    }

    throw new Error('Cannot use basic auth, btoa is not a function');
  };

  return this._auth(user, pass, options, encoder);
};
/**
 * Add query-string `val`.
 *
 * Examples:
 *
 *   request.get('/shoes')
 *     .query('size=10')
 *     .query({ color: 'blue' })
 *
 * @param {Object|String} val
 * @return {Request} for chaining
 * @api public
 */


Request.prototype.query = function (value) {
  if (typeof value !== 'string') value = serialize(value);
  if (value) this._query.push(value);
  return this;
};
/**
 * Queue the given `file` as an attachment to the specified `field`,
 * with optional `options` (or filename).
 *
 * ``` js
 * request.post('/upload')
 *   .attach('content', new Blob(['<a id="a"><b id="b">hey!</b></a>'], { type: "text/html"}))
 *   .end(callback);
 * ```
 *
 * @param {String} field
 * @param {Blob|File} file
 * @param {String|Object} options
 * @return {Request} for chaining
 * @api public
 */


Request.prototype.attach = function (field, file, options) {
  if (file) {
    if (this._data) {
      throw new Error("superagent can't mix .send() and .attach()");
    }

    this._getFormData().append(field, file, options || file.name);
  }

  return this;
};

Request.prototype._getFormData = function () {
  if (!this._formData) {
    this._formData = new root.FormData();
  }

  return this._formData;
};
/**
 * Invoke the callback with `err` and `res`
 * and handle arity check.
 *
 * @param {Error} err
 * @param {Response} res
 * @api private
 */


Request.prototype.callback = function (error, res) {
  if (this._shouldRetry(error, res)) {
    return this._retry();
  }

  var fn = this._callback;
  this.clearTimeout();

  if (error) {
    if (this._maxRetries) error.retries = this._retries - 1;
    this.emit('error', error);
  }

  fn(error, res);
};
/**
 * Invoke callback with x-domain error.
 *
 * @api private
 */


Request.prototype.crossDomainError = function () {
  var error = new Error('Request has been terminated\nPossible causes: the network is offline, Origin is not allowed by Access-Control-Allow-Origin, the page is being unloaded, etc.');
  error.crossDomain = true;
  error.status = this.status;
  error.method = this.method;
  error.url = this.url;
  this.callback(error);
}; // This only warns, because the request is still likely to work


Request.prototype.agent = function () {
  console.warn('This is not supported in browser version of superagent');
  return this;
};

Request.prototype.ca = Request.prototype.agent;
Request.prototype.buffer = Request.prototype.ca; // This throws, because it can't send/receive data as expected

Request.prototype.write = function () {
  throw new Error('Streaming is not supported in browser version of superagent');
};

Request.prototype.pipe = Request.prototype.write;
/**
 * Check if `obj` is a host object,
 * we don't want to serialize these :)
 *
 * @param {Object} obj host object
 * @return {Boolean} is a host object
 * @api private
 */

Request.prototype._isHost = function (object) {
  // Native objects stringify to [object File], [object Blob], [object FormData], etc.
  return object && _typeof(object) === 'object' && !Array.isArray(object) && Object.prototype.toString.call(object) !== '[object Object]';
};
/**
 * Initiate request, invoking callback `fn(res)`
 * with an instanceof `Response`.
 *
 * @param {Function} fn
 * @return {Request} for chaining
 * @api public
 */


Request.prototype.end = function (fn) {
  if (this._endCalled) {
    console.warn('Warning: .end() was called twice. This is not supported in superagent');
  }

  this._endCalled = true; // store callback

  this._callback = fn || noop; // querystring

  this._finalizeQueryString();

  this._end();
};

Request.prototype._setUploadTimeout = function () {
  var self = this; // upload timeout it's wokrs only if deadline timeout is off

  if (this._uploadTimeout && !this._uploadTimeoutTimer) {
    this._uploadTimeoutTimer = setTimeout(function () {
      self._timeoutError('Upload timeout of ', self._uploadTimeout, 'ETIMEDOUT');
    }, this._uploadTimeout);
  }
}; // eslint-disable-next-line complexity


Request.prototype._end = function () {
  if (this._aborted) return this.callback(new Error('The request has been aborted even before .end() was called'));
  var self = this;
  this.xhr = request.getXHR();
  var xhr = this.xhr;
  var data = this._formData || this._data;

  this._setTimeouts(); // state change


  xhr.addEventListener('readystatechange', function () {
    var readyState = xhr.readyState;

    if (readyState >= 2 && self._responseTimeoutTimer) {
      clearTimeout(self._responseTimeoutTimer);
    }

    if (readyState !== 4) {
      return;
    } // In IE9, reads to any property (e.g. status) off of an aborted XHR will
    // result in the error "Could not complete the operation due to error c00c023f"


    var status;

    try {
      status = xhr.status;
    } catch (_unused5) {
      status = 0;
    }

    if (!status) {
      if (self.timedout || self._aborted) return;
      return self.crossDomainError();
    }

    self.emit('end');
  }); // progress

  var handleProgress = function handleProgress(direction, e) {
    if (e.total > 0) {
      e.percent = e.loaded / e.total * 100;

      if (e.percent === 100) {
        clearTimeout(self._uploadTimeoutTimer);
      }
    }

    e.direction = direction;
    self.emit('progress', e);
  };

  if (this.hasListeners('progress')) {
    try {
      xhr.addEventListener('progress', handleProgress.bind(null, 'download'));

      if (xhr.upload) {
        xhr.upload.addEventListener('progress', handleProgress.bind(null, 'upload'));
      }
    } catch (_unused6) {// Accessing xhr.upload fails in IE from a web worker, so just pretend it doesn't exist.
      // Reported here:
      // https://connect.microsoft.com/IE/feedback/details/837245/xmlhttprequest-upload-throws-invalid-argument-when-used-from-web-worker-context
    }
  }

  if (xhr.upload) {
    this._setUploadTimeout();
  } // initiate request


  try {
    if (this.username && this.password) {
      xhr.open(this.method, this.url, true, this.username, this.password);
    } else {
      xhr.open(this.method, this.url, true);
    }
  } catch (err) {
    // see #1149
    return this.callback(err);
  } // CORS


  if (this._withCredentials) xhr.withCredentials = true; // body

  if (!this._formData && this.method !== 'GET' && this.method !== 'HEAD' && typeof data !== 'string' && !this._isHost(data)) {
    // serialize stuff
    var contentType = this._header['content-type'];

    var _serialize = this._serializer || request.serialize[contentType ? contentType.split(';')[0] : ''];

    if (!_serialize && isJSON(contentType)) {
      _serialize = request.serialize['application/json'];
    }

    if (_serialize) data = _serialize(data);
  } // set header fields


  for (var field in this.header) {
    if (this.header[field] === null) continue;
    if (Object.prototype.hasOwnProperty.call(this.header, field)) xhr.setRequestHeader(field, this.header[field]);
  }

  if (this._responseType) {
    xhr.responseType = this._responseType;
  } // send stuff


  this.emit('request', this); // IE11 xhr.send(undefined) sends 'undefined' string as POST payload (instead of nothing)
  // We need null here if data is undefined

  xhr.send(typeof data === 'undefined' ? null : data);
};

request.agent = function () {
  return new Agent();
};

var _loop = function _loop() {
  var method = _arr[_i];

  Agent.prototype[method.toLowerCase()] = function (url, fn) {
    var request_ = new request.Request(method, url);

    this._setDefaults(request_);

    if (fn) {
      request_.end(fn);
    }

    return request_;
  };
};

for (var _i = 0, _arr = ['GET', 'POST', 'OPTIONS', 'PATCH', 'PUT', 'DELETE']; _i < _arr.length; _i++) {
  _loop();
}

Agent.prototype.del = Agent.prototype.delete;
/**
 * GET `url` with optional callback `fn(res)`.
 *
 * @param {String} url
 * @param {Mixed|Function} [data] or fn
 * @param {Function} [fn]
 * @return {Request}
 * @api public
 */

request.get = function (url, data, fn) {
  var request_ = request('GET', url);

  if (typeof data === 'function') {
    fn = data;
    data = null;
  }

  if (data) request_.query(data);
  if (fn) request_.end(fn);
  return request_;
};
/**
 * HEAD `url` with optional callback `fn(res)`.
 *
 * @param {String} url
 * @param {Mixed|Function} [data] or fn
 * @param {Function} [fn]
 * @return {Request}
 * @api public
 */


request.head = function (url, data, fn) {
  var request_ = request('HEAD', url);

  if (typeof data === 'function') {
    fn = data;
    data = null;
  }

  if (data) request_.query(data);
  if (fn) request_.end(fn);
  return request_;
};
/**
 * OPTIONS query to `url` with optional callback `fn(res)`.
 *
 * @param {String} url
 * @param {Mixed|Function} [data] or fn
 * @param {Function} [fn]
 * @return {Request}
 * @api public
 */


request.options = function (url, data, fn) {
  var request_ = request('OPTIONS', url);

  if (typeof data === 'function') {
    fn = data;
    data = null;
  }

  if (data) request_.send(data);
  if (fn) request_.end(fn);
  return request_;
};
/**
 * DELETE `url` with optional `data` and callback `fn(res)`.
 *
 * @param {String} url
 * @param {Mixed} [data]
 * @param {Function} [fn]
 * @return {Request}
 * @api public
 */


function del(url, data, fn) {
  var request_ = request('DELETE', url);

  if (typeof data === 'function') {
    fn = data;
    data = null;
  }

  if (data) request_.send(data);
  if (fn) request_.end(fn);
  return request_;
}

request.del = del;
request.delete = del;
/**
 * PATCH `url` with optional `data` and callback `fn(res)`.
 *
 * @param {String} url
 * @param {Mixed} [data]
 * @param {Function} [fn]
 * @return {Request}
 * @api public
 */

request.patch = function (url, data, fn) {
  var request_ = request('PATCH', url);

  if (typeof data === 'function') {
    fn = data;
    data = null;
  }

  if (data) request_.send(data);
  if (fn) request_.end(fn);
  return request_;
};
/**
 * POST `url` with optional `data` and callback `fn(res)`.
 *
 * @param {String} url
 * @param {Mixed} [data]
 * @param {Function} [fn]
 * @return {Request}
 * @api public
 */


request.post = function (url, data, fn) {
  var request_ = request('POST', url);

  if (typeof data === 'function') {
    fn = data;
    data = null;
  }

  if (data) request_.send(data);
  if (fn) request_.end(fn);
  return request_;
};
/**
 * PUT `url` with optional `data` and callback `fn(res)`.
 *
 * @param {String} url
 * @param {Mixed|Function} [data] or fn
 * @param {Function} [fn]
 * @return {Request}
 * @api public
 */


request.put = function (url, data, fn) {
  var request_ = request('PUT', url);

  if (typeof data === 'function') {
    fn = data;
    data = null;
  }

  if (data) request_.send(data);
  if (fn) request_.end(fn);
  return request_;
};

},{"./agent-base":169,"./is-object":171,"./request-base":172,"./response-base":173,"component-emitter":53,"fast-safe-stringify":75,"qs":122}],171:[function(require,module,exports){
"use strict";

function _typeof(obj) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }, _typeof(obj); }

/**
 * Check if `obj` is an object.
 *
 * @param {Object} obj
 * @return {Boolean}
 * @api private
 */
function isObject(object) {
  return object !== null && _typeof(object) === 'object';
}

module.exports = isObject;

},{}],172:[function(require,module,exports){
(function (process){(function (){
"use strict";

function _typeof(obj) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }, _typeof(obj); }

var semver = require('semver');
/**
 * Module of mixed-in functions shared between node and client code
 */


var isObject = require('./is-object');
/**
 * Expose `RequestBase`.
 */


module.exports = RequestBase;
/**
 * Initialize a new `RequestBase`.
 *
 * @api public
 */

function RequestBase(object) {
  if (object) return mixin(object);
}
/**
 * Mixin the prototype properties.
 *
 * @param {Object} obj
 * @return {Object}
 * @api private
 */


function mixin(object) {
  for (var key in RequestBase.prototype) {
    if (Object.prototype.hasOwnProperty.call(RequestBase.prototype, key)) object[key] = RequestBase.prototype[key];
  }

  return object;
}
/**
 * Clear previous timeout.
 *
 * @return {Request} for chaining
 * @api public
 */


RequestBase.prototype.clearTimeout = function () {
  clearTimeout(this._timer);
  clearTimeout(this._responseTimeoutTimer);
  clearTimeout(this._uploadTimeoutTimer);
  delete this._timer;
  delete this._responseTimeoutTimer;
  delete this._uploadTimeoutTimer;
  return this;
};
/**
 * Override default response body parser
 *
 * This function will be called to convert incoming data into request.body
 *
 * @param {Function}
 * @api public
 */


RequestBase.prototype.parse = function (fn) {
  this._parser = fn;
  return this;
};
/**
 * Set format of binary response body.
 * In browser valid formats are 'blob' and 'arraybuffer',
 * which return Blob and ArrayBuffer, respectively.
 *
 * In Node all values result in Buffer.
 *
 * Examples:
 *
 *      req.get('/')
 *        .responseType('blob')
 *        .end(callback);
 *
 * @param {String} val
 * @return {Request} for chaining
 * @api public
 */


RequestBase.prototype.responseType = function (value) {
  this._responseType = value;
  return this;
};
/**
 * Override default request body serializer
 *
 * This function will be called to convert data set via .send or .attach into payload to send
 *
 * @param {Function}
 * @api public
 */


RequestBase.prototype.serialize = function (fn) {
  this._serializer = fn;
  return this;
};
/**
 * Set timeouts.
 *
 * - response timeout is time between sending request and receiving the first byte of the response. Includes DNS and connection time.
 * - deadline is the time from start of the request to receiving response body in full. If the deadline is too short large files may not load at all on slow connections.
 * - upload is the time  since last bit of data was sent or received. This timeout works only if deadline timeout is off
 *
 * Value of 0 or false means no timeout.
 *
 * @param {Number|Object} ms or {response, deadline}
 * @return {Request} for chaining
 * @api public
 */


RequestBase.prototype.timeout = function (options) {
  if (!options || _typeof(options) !== 'object') {
    this._timeout = options;
    this._responseTimeout = 0;
    this._uploadTimeout = 0;
    return this;
  }

  for (var option in options) {
    if (Object.prototype.hasOwnProperty.call(options, option)) {
      switch (option) {
        case 'deadline':
          this._timeout = options.deadline;
          break;

        case 'response':
          this._responseTimeout = options.response;
          break;

        case 'upload':
          this._uploadTimeout = options.upload;
          break;

        default:
          console.warn('Unknown timeout option', option);
      }
    }
  }

  return this;
};
/**
 * Set number of retry attempts on error.
 *
 * Failed requests will be retried 'count' times if timeout or err.code >= 500.
 *
 * @param {Number} count
 * @param {Function} [fn]
 * @return {Request} for chaining
 * @api public
 */


RequestBase.prototype.retry = function (count, fn) {
  // Default to 1 if no count passed or true
  if (arguments.length === 0 || count === true) count = 1;
  if (count <= 0) count = 0;
  this._maxRetries = count;
  this._retries = 0;
  this._retryCallback = fn;
  return this;
}; //
// NOTE: we do not include ESOCKETTIMEDOUT because that is from `request` package
//       <https://github.com/sindresorhus/got/pull/537>
//
// NOTE: we do not include EADDRINFO because it was removed from libuv in 2014
//       <https://github.com/libuv/libuv/commit/02e1ebd40b807be5af46343ea873331b2ee4e9c1>
//       <https://github.com/request/request/search?q=ESOCKETTIMEDOUT&unscoped_q=ESOCKETTIMEDOUT>
//
//
// TODO: expose these as configurable defaults
//


var ERROR_CODES = new Set(['ETIMEDOUT', 'ECONNRESET', 'EADDRINUSE', 'ECONNREFUSED', 'EPIPE', 'ENOTFOUND', 'ENETUNREACH', 'EAI_AGAIN']);
var STATUS_CODES = new Set([408, 413, 429, 500, 502, 503, 504, 521, 522, 524]); // TODO: we would need to make this easily configurable before adding it in (e.g. some might want to add POST)
// const METHODS = new Set(['GET', 'PUT', 'HEAD', 'DELETE', 'OPTIONS', 'TRACE']);

/**
 * Determine if a request should be retried.
 * (Inspired by https://github.com/sindresorhus/got#retry)
 *
 * @param {Error} err an error
 * @param {Response} [res] response
 * @returns {Boolean} if segment should be retried
 */

RequestBase.prototype._shouldRetry = function (error, res) {
  if (!this._maxRetries || this._retries++ >= this._maxRetries) {
    return false;
  }

  if (this._retryCallback) {
    try {
      var override = this._retryCallback(error, res);

      if (override === true) return true;
      if (override === false) return false; // undefined falls back to defaults
    } catch (error_) {
      console.error(error_);
    }
  } // TODO: we would need to make this easily configurable before adding it in (e.g. some might want to add POST)

  /*
  if (
    this.req &&
    this.req.method &&
    !METHODS.has(this.req.method.toUpperCase())
  )
    return false;
  */


  if (res && res.status && STATUS_CODES.has(res.status)) return true;

  if (error) {
    if (error.code && ERROR_CODES.has(error.code)) return true; // Superagent timeout

    if (error.timeout && error.code === 'ECONNABORTED') return true;
    if (error.crossDomain) return true;
  }

  return false;
};
/**
 * Retry request
 *
 * @return {Request} for chaining
 * @api private
 */


RequestBase.prototype._retry = function () {
  this.clearTimeout(); // node

  if (this.req) {
    this.req = null;
    this.req = this.request();
  }

  this._aborted = false;
  this.timedout = false;
  this.timedoutError = null;
  return this._end();
};
/**
 * Promise support
 *
 * @param {Function} resolve
 * @param {Function} [reject]
 * @return {Request}
 */


RequestBase.prototype.then = function (resolve, reject) {
  var _this = this;

  if (!this._fullfilledPromise) {
    var self = this;

    if (this._endCalled) {
      console.warn('Warning: superagent request was sent twice, because both .end() and .then() were called. Never call .end() if you use promises');
    }

    this._fullfilledPromise = new Promise(function (resolve, reject) {
      self.on('abort', function () {
        if (_this._maxRetries && _this._maxRetries > _this._retries) {
          return;
        }

        if (_this.timedout && _this.timedoutError) {
          reject(_this.timedoutError);
          return;
        }

        var error = new Error('Aborted');
        error.code = 'ABORTED';
        error.status = _this.status;
        error.method = _this.method;
        error.url = _this.url;
        reject(error);
      });
      self.end(function (error, res) {
        if (error) reject(error);else resolve(res);
      });
    });
  }

  return this._fullfilledPromise.then(resolve, reject);
};

RequestBase.prototype.catch = function (cb) {
  return this.then(undefined, cb);
};
/**
 * Allow for extension
 */


RequestBase.prototype.use = function (fn) {
  fn(this);
  return this;
};

RequestBase.prototype.ok = function (cb) {
  if (typeof cb !== 'function') throw new Error('Callback required');
  this._okCallback = cb;
  return this;
};

RequestBase.prototype._isResponseOK = function (res) {
  if (!res) {
    return false;
  }

  if (this._okCallback) {
    return this._okCallback(res);
  }

  return res.status >= 200 && res.status < 300;
};
/**
 * Get request header `field`.
 * Case-insensitive.
 *
 * @param {String} field
 * @return {String}
 * @api public
 */


RequestBase.prototype.get = function (field) {
  return this._header[field.toLowerCase()];
};
/**
 * Get case-insensitive header `field` value.
 * This is a deprecated internal API. Use `.get(field)` instead.
 *
 * (getHeader is no longer used internally by the superagent code base)
 *
 * @param {String} field
 * @return {String}
 * @api private
 * @deprecated
 */


RequestBase.prototype.getHeader = RequestBase.prototype.get;
/**
 * Set header `field` to `val`, or multiple fields with one object.
 * Case-insensitive.
 *
 * Examples:
 *
 *      req.get('/')
 *        .set('Accept', 'application/json')
 *        .set('X-API-Key', 'foobar')
 *        .end(callback);
 *
 *      req.get('/')
 *        .set({ Accept: 'application/json', 'X-API-Key': 'foobar' })
 *        .end(callback);
 *
 * @param {String|Object} field
 * @param {String} val
 * @return {Request} for chaining
 * @api public
 */

RequestBase.prototype.set = function (field, value) {
  if (isObject(field)) {
    for (var key in field) {
      if (Object.prototype.hasOwnProperty.call(field, key)) this.set(key, field[key]);
    }

    return this;
  }

  this._header[field.toLowerCase()] = value;
  this.header[field] = value;
  return this;
};
/**
 * Remove header `field`.
 * Case-insensitive.
 *
 * Example:
 *
 *      req.get('/')
 *        .unset('User-Agent')
 *        .end(callback);
 *
 * @param {String} field field name
 */


RequestBase.prototype.unset = function (field) {
  delete this._header[field.toLowerCase()];
  delete this.header[field];
  return this;
};
/**
 * Write the field `name` and `val`, or multiple fields with one object
 * for "multipart/form-data" request bodies.
 *
 * ``` js
 * request.post('/upload')
 *   .field('foo', 'bar')
 *   .end(callback);
 *
 * request.post('/upload')
 *   .field({ foo: 'bar', baz: 'qux' })
 *   .end(callback);
 * ```
 *
 * @param {String|Object} name name of field
 * @param {String|Blob|File|Buffer|fs.ReadStream} val value of field
 * @return {Request} for chaining
 * @api public
 */


RequestBase.prototype.field = function (name, value) {
  // name should be either a string or an object.
  if (name === null || undefined === name) {
    throw new Error('.field(name, val) name can not be empty');
  }

  if (this._data) {
    throw new Error(".field() can't be used if .send() is used. Please use only .send() or only .field() & .attach()");
  }

  if (isObject(name)) {
    for (var key in name) {
      if (Object.prototype.hasOwnProperty.call(name, key)) this.field(key, name[key]);
    }

    return this;
  }

  if (Array.isArray(value)) {
    for (var i in value) {
      if (Object.prototype.hasOwnProperty.call(value, i)) this.field(name, value[i]);
    }

    return this;
  } // val should be defined now


  if (value === null || undefined === value) {
    throw new Error('.field(name, val) val can not be empty');
  }

  if (typeof value === 'boolean') {
    value = String(value);
  }

  this._getFormData().append(name, value);

  return this;
};
/**
 * Abort the request, and clear potential timeout.
 *
 * @return {Request} request
 * @api public
 */


RequestBase.prototype.abort = function () {
  if (this._aborted) {
    return this;
  }

  this._aborted = true;
  if (this.xhr) this.xhr.abort(); // browser

  if (this.req) {
    // Node v13 has major differences in `abort()`
    // https://github.com/nodejs/node/blob/v12.x/lib/internal/streams/end-of-stream.js
    // https://github.com/nodejs/node/blob/v13.x/lib/internal/streams/end-of-stream.js
    // https://github.com/nodejs/node/blob/v14.x/lib/internal/streams/end-of-stream.js
    // (if you run a diff across these you will see the differences)
    //
    // References:
    // <https://github.com/nodejs/node/issues/31630>
    // <https://github.com/visionmedia/superagent/pull/1084/commits/dc18679a7c5ccfc6046d882015e5126888973bc8>
    //
    // Thanks to @shadowgate15 and @niftylettuce
    if (semver.gte(process.version, 'v13.0.0') && semver.lt(process.version, 'v14.0.0')) {
      // Note that the reason this doesn't work is because in v13 as compared to v14
      // there is no `callback = nop` set in end-of-stream.js above
      throw new Error('Superagent does not work in v13 properly with abort() due to Node.js core changes');
    } else if (semver.gte(process.version, 'v14.0.0')) {
      // We have to manually set `destroyed` to `true` in order for this to work
      // (see core internals of end-of-stream.js above in v14 branch as compared to v12)
      this.req.destroyed = true;
    }

    this.req.abort(); // node
  }

  this.clearTimeout();
  this.emit('abort');
  return this;
};

RequestBase.prototype._auth = function (user, pass, options, base64Encoder) {
  switch (options.type) {
    case 'basic':
      this.set('Authorization', "Basic ".concat(base64Encoder("".concat(user, ":").concat(pass))));
      break;

    case 'auto':
      this.username = user;
      this.password = pass;
      break;

    case 'bearer':
      // usage would be .auth(accessToken, { type: 'bearer' })
      this.set('Authorization', "Bearer ".concat(user));
      break;

    default:
      break;
  }

  return this;
};
/**
 * Enable transmission of cookies with x-domain requests.
 *
 * Note that for this to work the origin must not be
 * using "Access-Control-Allow-Origin" with a wildcard,
 * and also must set "Access-Control-Allow-Credentials"
 * to "true".
 *
 * @api public
 */


RequestBase.prototype.withCredentials = function (on) {
  // This is browser-only functionality. Node side is no-op.
  if (on === undefined) on = true;
  this._withCredentials = on;
  return this;
};
/**
 * Set the max redirects to `n`. Does nothing in browser XHR implementation.
 *
 * @param {Number} n
 * @return {Request} for chaining
 * @api public
 */


RequestBase.prototype.redirects = function (n) {
  this._maxRedirects = n;
  return this;
};
/**
 * Maximum size of buffered response body, in bytes. Counts uncompressed size.
 * Default 200MB.
 *
 * @param {Number} n number of bytes
 * @return {Request} for chaining
 */


RequestBase.prototype.maxResponseSize = function (n) {
  if (typeof n !== 'number') {
    throw new TypeError('Invalid argument');
  }

  this._maxResponseSize = n;
  return this;
};
/**
 * Convert to a plain javascript object (not JSON string) of scalar properties.
 * Note as this method is designed to return a useful non-this value,
 * it cannot be chained.
 *
 * @return {Object} describing method, url, and data of this request
 * @api public
 */


RequestBase.prototype.toJSON = function () {
  return {
    method: this.method,
    url: this.url,
    data: this._data,
    headers: this._header
  };
};
/**
 * Send `data` as the request body, defaulting the `.type()` to "json" when
 * an object is given.
 *
 * Examples:
 *
 *       // manual json
 *       request.post('/user')
 *         .type('json')
 *         .send('{"name":"tj"}')
 *         .end(callback)
 *
 *       // auto json
 *       request.post('/user')
 *         .send({ name: 'tj' })
 *         .end(callback)
 *
 *       // manual x-www-form-urlencoded
 *       request.post('/user')
 *         .type('form')
 *         .send('name=tj')
 *         .end(callback)
 *
 *       // auto x-www-form-urlencoded
 *       request.post('/user')
 *         .type('form')
 *         .send({ name: 'tj' })
 *         .end(callback)
 *
 *       // defaults to x-www-form-urlencoded
 *      request.post('/user')
 *        .send('name=tobi')
 *        .send('species=ferret')
 *        .end(callback)
 *
 * @param {String|Object} data
 * @return {Request} for chaining
 * @api public
 */
// eslint-disable-next-line complexity


RequestBase.prototype.send = function (data) {
  var isObject_ = isObject(data);
  var type = this._header['content-type'];

  if (this._formData) {
    throw new Error(".send() can't be used if .attach() or .field() is used. Please use only .send() or only .field() & .attach()");
  }

  if (isObject_ && !this._data) {
    if (Array.isArray(data)) {
      this._data = [];
    } else if (!this._isHost(data)) {
      this._data = {};
    }
  } else if (data && this._data && this._isHost(this._data)) {
    throw new Error("Can't merge these send calls");
  } // merge


  if (isObject_ && isObject(this._data)) {
    for (var key in data) {
      if (Object.prototype.hasOwnProperty.call(data, key)) this._data[key] = data[key];
    }
  } else if (typeof data === 'string') {
    // default to x-www-form-urlencoded
    if (!type) this.type('form');
    type = this._header['content-type'];
    if (type) type = type.toLowerCase().trim();

    if (type === 'application/x-www-form-urlencoded') {
      this._data = this._data ? "".concat(this._data, "&").concat(data) : data;
    } else {
      this._data = (this._data || '') + data;
    }
  } else {
    this._data = data;
  }

  if (!isObject_ || this._isHost(data)) {
    return this;
  } // default to json


  if (!type) this.type('json');
  return this;
};
/**
 * Sort `querystring` by the sort function
 *
 *
 * Examples:
 *
 *       // default order
 *       request.get('/user')
 *         .query('name=Nick')
 *         .query('search=Manny')
 *         .sortQuery()
 *         .end(callback)
 *
 *       // customized sort function
 *       request.get('/user')
 *         .query('name=Nick')
 *         .query('search=Manny')
 *         .sortQuery(function(a, b){
 *           return a.length - b.length;
 *         })
 *         .end(callback)
 *
 *
 * @param {Function} sort
 * @return {Request} for chaining
 * @api public
 */


RequestBase.prototype.sortQuery = function (sort) {
  // _sort default to true but otherwise can be a function or boolean
  this._sort = typeof sort === 'undefined' ? true : sort;
  return this;
};
/**
 * Compose querystring to append to req.url
 *
 * @api private
 */


RequestBase.prototype._finalizeQueryString = function () {
  var query = this._query.join('&');

  if (query) {
    this.url += (this.url.includes('?') ? '&' : '?') + query;
  }

  this._query.length = 0; // Makes the call idempotent

  if (this._sort) {
    var index = this.url.indexOf('?');

    if (index >= 0) {
      var queryArray = this.url.slice(index + 1).split('&');

      if (typeof this._sort === 'function') {
        queryArray.sort(this._sort);
      } else {
        queryArray.sort();
      }

      this.url = this.url.slice(0, index) + '?' + queryArray.join('&');
    }
  }
}; // For backwards compat only


RequestBase.prototype._appendQueryString = function () {
  console.warn('Unsupported');
};
/**
 * Invoke callback with timeout error.
 *
 * @api private
 */


RequestBase.prototype._timeoutError = function (reason, timeout, errno) {
  if (this._aborted) {
    return;
  }

  var error = new Error("".concat(reason + timeout, "ms exceeded"));
  error.timeout = timeout;
  error.code = 'ECONNABORTED';
  error.errno = errno;
  this.timedout = true;
  this.timedoutError = error;
  this.abort();
  this.callback(error);
};

RequestBase.prototype._setTimeouts = function () {
  var self = this; // deadline

  if (this._timeout && !this._timer) {
    this._timer = setTimeout(function () {
      self._timeoutError('Timeout of ', self._timeout, 'ETIME');
    }, this._timeout);
  } // response timeout


  if (this._responseTimeout && !this._responseTimeoutTimer) {
    this._responseTimeoutTimer = setTimeout(function () {
      self._timeoutError('Response timeout of ', self._responseTimeout, 'ETIMEDOUT');
    }, this._responseTimeout);
  }
};

}).call(this)}).call(this,require('_process'))
},{"./is-object":171,"_process":120,"semver":43}],173:[function(require,module,exports){
"use strict";

/**
 * Module dependencies.
 */
var utils = require('./utils');
/**
 * Expose `ResponseBase`.
 */


module.exports = ResponseBase;
/**
 * Initialize a new `ResponseBase`.
 *
 * @api public
 */

function ResponseBase(object) {
  if (object) return mixin(object);
}
/**
 * Mixin the prototype properties.
 *
 * @param {Object} obj
 * @return {Object}
 * @api private
 */


function mixin(object) {
  for (var key in ResponseBase.prototype) {
    if (Object.prototype.hasOwnProperty.call(ResponseBase.prototype, key)) object[key] = ResponseBase.prototype[key];
  }

  return object;
}
/**
 * Get case-insensitive `field` value.
 *
 * @param {String} field
 * @return {String}
 * @api public
 */


ResponseBase.prototype.get = function (field) {
  return this.header[field.toLowerCase()];
};
/**
 * Set header related properties:
 *
 *   - `.type` the content type without params
 *
 * A response of "Content-Type: text/plain; charset=utf-8"
 * will provide you with a `.type` of "text/plain".
 *
 * @param {Object} header
 * @api private
 */


ResponseBase.prototype._setHeaderProperties = function (header) {
  // TODO: moar!
  // TODO: make this a util
  // content-type
  var ct = header['content-type'] || '';
  this.type = utils.type(ct); // params

  var parameters = utils.params(ct);

  for (var key in parameters) {
    if (Object.prototype.hasOwnProperty.call(parameters, key)) this[key] = parameters[key];
  }

  this.links = {}; // links

  try {
    if (header.link) {
      this.links = utils.parseLinks(header.link);
    }
  } catch (_unused) {// ignore
  }
};
/**
 * Set flags such as `.ok` based on `status`.
 *
 * For example a 2xx response will give you a `.ok` of __true__
 * whereas 5xx will be __false__ and `.error` will be __true__. The
 * `.clientError` and `.serverError` are also available to be more
 * specific, and `.statusType` is the class of error ranging from 1..5
 * sometimes useful for mapping respond colors etc.
 *
 * "sugar" properties are also defined for common cases. Currently providing:
 *
 *   - .noContent
 *   - .badRequest
 *   - .unauthorized
 *   - .notAcceptable
 *   - .notFound
 *
 * @param {Number} status
 * @api private
 */


ResponseBase.prototype._setStatusProperties = function (status) {
  var type = Math.trunc(status / 100); // status / class

  this.statusCode = status;
  this.status = this.statusCode;
  this.statusType = type; // basics

  this.info = type === 1;
  this.ok = type === 2;
  this.redirect = type === 3;
  this.clientError = type === 4;
  this.serverError = type === 5;
  this.error = type === 4 || type === 5 ? this.toError() : false; // sugar

  this.created = status === 201;
  this.accepted = status === 202;
  this.noContent = status === 204;
  this.badRequest = status === 400;
  this.unauthorized = status === 401;
  this.notAcceptable = status === 406;
  this.forbidden = status === 403;
  this.notFound = status === 404;
  this.unprocessableEntity = status === 422;
};

},{"./utils":174}],174:[function(require,module,exports){
"use strict";

function _createForOfIteratorHelper(o, allowArrayLike) { var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"]; if (!it) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = it.call(o); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it.return != null) it.return(); } finally { if (didErr) throw err; } } }; }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

/**
 * Return the mime type for the given `str`.
 *
 * @param {String} str
 * @return {String}
 * @api private
 */
exports.type = function (string_) {
  return string_.split(/ *; */).shift();
};
/**
 * Return header field parameters.
 *
 * @param {String} str
 * @return {Object}
 * @api private
 */


exports.params = function (value) {
  var object = {};

  var _iterator = _createForOfIteratorHelper(value.split(/ *; */)),
      _step;

  try {
    for (_iterator.s(); !(_step = _iterator.n()).done;) {
      var string_ = _step.value;
      var parts = string_.split(/ *= */);
      var key = parts.shift();

      var _value = parts.shift();

      if (key && _value) object[key] = _value;
    }
  } catch (err) {
    _iterator.e(err);
  } finally {
    _iterator.f();
  }

  return object;
};
/**
 * Parse Link header fields.
 *
 * @param {String} str
 * @return {Object}
 * @api private
 */


exports.parseLinks = function (value) {
  var object = {};

  var _iterator2 = _createForOfIteratorHelper(value.split(/ *, */)),
      _step2;

  try {
    for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
      var string_ = _step2.value;
      var parts = string_.split(/ *; */);
      var url = parts[0].slice(1, -1);
      var rel = parts[1].split(/ *= */)[1].slice(1, -1);
      object[rel] = url;
    }
  } catch (err) {
    _iterator2.e(err);
  } finally {
    _iterator2.f();
  }

  return object;
};
/**
 * Strip content related fields from `header`.
 *
 * @param {Object} header
 * @return {Object} header
 * @api private
 */


exports.cleanHeader = function (header, changesOrigin) {
  delete header['content-type'];
  delete header['content-length'];
  delete header['transfer-encoding'];
  delete header.host; // secuirty

  if (changesOrigin) {
    delete header.authorization;
    delete header.cookie;
  }

  return header;
};

},{}],175:[function(require,module,exports){
(function (global){(function (){

/**
 * Module exports.
 */

module.exports = deprecate;

/**
 * Mark that a method should not be used.
 * Returns a modified function which warns once by default.
 *
 * If `localStorage.noDeprecation = true` is set, then it is a no-op.
 *
 * If `localStorage.throwDeprecation = true` is set, then deprecated functions
 * will throw an Error when invoked.
 *
 * If `localStorage.traceDeprecation = true` is set, then deprecated functions
 * will invoke `console.trace()` instead of `console.error()`.
 *
 * @param {Function} fn - the function to deprecate
 * @param {String} msg - the string to print to the console when `fn` is invoked
 * @returns {Function} a new "deprecated" version of `fn`
 * @api public
 */

function deprecate (fn, msg) {
  if (config('noDeprecation')) {
    return fn;
  }

  var warned = false;
  function deprecated() {
    if (!warned) {
      if (config('throwDeprecation')) {
        throw new Error(msg);
      } else if (config('traceDeprecation')) {
        console.trace(msg);
      } else {
        console.warn(msg);
      }
      warned = true;
    }
    return fn.apply(this, arguments);
  }

  return deprecated;
}

/**
 * Checks `localStorage` for boolean values for the given `name`.
 *
 * @param {String} name
 * @returns {Boolean}
 * @api private
 */

function config (name) {
  // accessing global.localStorage can trigger a DOMException in sandboxed iframes
  try {
    if (!global.localStorage) return false;
  } catch (_) {
    return false;
  }
  var val = global.localStorage[name];
  if (null == val) return false;
  return String(val).toLowerCase() === 'true';
}

}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],176:[function(require,module,exports){
'use strict';

var alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split('')
  , length = 64
  , map = {}
  , seed = 0
  , i = 0
  , prev;

/**
 * Return a string representing the specified number.
 *
 * @param {Number} num The number to convert.
 * @returns {String} The string representation of the number.
 * @api public
 */
function encode(num) {
  var encoded = '';

  do {
    encoded = alphabet[num % length] + encoded;
    num = Math.floor(num / length);
  } while (num > 0);

  return encoded;
}

/**
 * Return the integer value specified by the given string.
 *
 * @param {String} str The string to convert.
 * @returns {Number} The integer value represented by the string.
 * @api public
 */
function decode(str) {
  var decoded = 0;

  for (i = 0; i < str.length; i++) {
    decoded = decoded * length + map[str.charAt(i)];
  }

  return decoded;
}

/**
 * Yeast: A tiny growing id generator.
 *
 * @returns {String} A unique id.
 * @api public
 */
function yeast() {
  var now = encode(+new Date());

  if (now !== prev) return seed = 0, prev = now;
  return now +'.'+ encode(seed++);
}

//
// Map each character to its index.
//
for (; i < length; i++) map[alphabet[i]] = i;

//
// Expose the `yeast`, `encode` and `decode` functions.
//
yeast.encode = encode;
yeast.decode = decode;
module.exports = yeast;

},{}]},{},[1]);