From 1f3000b7f94d44facc71125d39a49a8e3a36f00d Mon Sep 17 00:00:00 2001
From: Jeffrey Warren <jeff@unterbahn.com>
Date: Wed, 6 Sep 2017 14:34:24 -0400
Subject: [PATCH] Demo styling tweaks (#105)

* html demo tweaks

* in-progress demo styling

* merge fies

* old demo cleanup
---
 dist/image-sequencer.js                       | 3652 ++++++++---------
 .../demo-old.css                              |    0
 examples/demo.css                             |  193 +-
 examples/index.html                           |   64 +-
 examples/replace.html                         |    2 +-
 src/modules/Crop/info.json                    |    2 +
 6 files changed, 1755 insertions(+), 2158 deletions(-)
 rename dist/image-sequencer.css => examples/demo-old.css (100%)

diff --git a/dist/image-sequencer.js b/dist/image-sequencer.js
index 65653db1..a8ef039d 100644
--- a/dist/image-sequencer.js
+++ b/dist/image-sequencer.js
@@ -1,4 +1,365 @@
 (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+// 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.
+
+// when used in node, this will actually load the util module we depend on
+// versus loading the builtin util module as happens otherwise
+// this is a bug in node module loading as far as I am concerned
+var util = require('util/');
+
+var pSlice = Array.prototype.slice;
+var hasOwn = Object.prototype.hasOwnProperty;
+
+// 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 })
+
+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 = stackStartFunction.name;
+      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 replacer(key, value) {
+  if (util.isUndefined(value)) {
+    return '' + value;
+  }
+  if (util.isNumber(value) && !isFinite(value)) {
+    return value.toString();
+  }
+  if (util.isFunction(value) || util.isRegExp(value)) {
+    return value.toString();
+  }
+  return value;
+}
+
+function truncate(s, n) {
+  if (util.isString(s)) {
+    return s.length < n ? s : s.slice(0, n);
+  } else {
+    return s;
+  }
+}
+
+function getMessage(self) {
+  return truncate(JSON.stringify(self.actual, replacer), 128) + ' ' +
+         self.operator + ' ' +
+         truncate(JSON.stringify(self.expected, replacer), 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)) {
+    fail(actual, expected, message, 'deepEqual', assert.deepEqual);
+  }
+};
+
+function _deepEqual(actual, expected) {
+  // 7.1. All identical values are equivalent, as determined by ===.
+  if (actual === expected) {
+    return true;
+
+  } else if (util.isBuffer(actual) && util.isBuffer(expected)) {
+    if (actual.length != expected.length) return false;
+
+    for (var i = 0; i < actual.length; i++) {
+      if (actual[i] !== expected[i]) return false;
+    }
+
+    return true;
+
+  // 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 (!util.isObject(actual) && !util.isObject(expected)) {
+    return actual == expected;
+
+  // 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 {
+    return objEquiv(actual, expected);
+  }
+}
+
+function isArguments(object) {
+  return Object.prototype.toString.call(object) == '[object Arguments]';
+}
+
+function objEquiv(a, b) {
+  if (util.isNullOrUndefined(a) || util.isNullOrUndefined(b))
+    return false;
+  // an identical 'prototype' property.
+  if (a.prototype !== b.prototype) return false;
+  // if one is a primitive, the other must be same
+  if (util.isPrimitive(a) || util.isPrimitive(b)) {
+    return a === b;
+  }
+  var aIsArgs = isArguments(a),
+      bIsArgs = isArguments(b);
+  if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
+    return false;
+  if (aIsArgs) {
+    a = pSlice.call(a);
+    b = pSlice.call(b);
+    return _deepEqual(a, b);
+  }
+  var ka = objectKeys(a),
+      kb = objectKeys(b),
+      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])) 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)) {
+    fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
+  }
+};
+
+// 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);
+  } else if (actual instanceof expected) {
+    return true;
+  } else if (expected.call({}, actual) === true) {
+    return true;
+  }
+
+  return false;
+}
+
+function _throws(shouldThrow, block, expected, message) {
+  var actual;
+
+  if (util.isString(expected)) {
+    message = expected;
+    expected = null;
+  }
+
+  try {
+    block();
+  } catch (e) {
+    actual = e;
+  }
+
+  message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
+            (message ? ' ' + message : '.');
+
+  if (shouldThrow && !actual) {
+    fail(actual, expected, 'Missing expected exception' + message);
+  }
+
+  if (!shouldThrow && expectedException(actual, expected)) {
+    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.apply(this, [true].concat(pSlice.call(arguments)));
+};
+
+// EXTENSION! This is annoying to write outside this module.
+assert.doesNotThrow = function(block, /*optional*/message) {
+  _throws.apply(this, [false].concat(pSlice.call(arguments)));
+};
+
+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;
+};
+
+},{"util/":119}],2:[function(require,module,exports){
 'use strict'
 
 exports.byteLength = byteLength
@@ -34,22 +395,22 @@ function placeHoldersCount (b64) {
 
 function byteLength (b64) {
   // base64 is 4/3 + up to two characters of the original data
-  return (b64.length * 3 / 4) - placeHoldersCount(b64)
+  return b64.length * 3 / 4 - placeHoldersCount(b64)
 }
 
 function toByteArray (b64) {
-  var i, l, tmp, placeHolders, arr
+  var i, j, l, tmp, placeHolders, arr
   var len = b64.length
   placeHolders = placeHoldersCount(b64)
 
-  arr = new Arr((len * 3 / 4) - placeHolders)
+  arr = new Arr(len * 3 / 4 - placeHolders)
 
   // if there are placeholders, only get up to the last complete 4 chars
   l = placeHolders > 0 ? len - 4 : len
 
   var L = 0
 
-  for (i = 0; i < l; i += 4) {
+  for (i = 0, j = 0; i < l; i += 4, j += 3) {
     tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
     arr[L++] = (tmp >> 16) & 0xFF
     arr[L++] = (tmp >> 8) & 0xFF
@@ -114,9 +475,9 @@ function fromByteArray (uint8) {
   return parts.join('')
 }
 
-},{}],2:[function(require,module,exports){
-
 },{}],3:[function(require,module,exports){
+
+},{}],4:[function(require,module,exports){
 (function (process,Buffer){
 var msg = require('pako/lib/zlib/messages');
 var zstream = require('pako/lib/zlib/zstream');
@@ -356,7 +717,7 @@ Zlib.prototype._error = function(status) {
 exports.Zlib = Zlib;
 
 }).call(this,require('_process'),require("buffer").Buffer)
-},{"_process":92,"buffer":5,"pako/lib/zlib/constants":60,"pako/lib/zlib/deflate.js":62,"pako/lib/zlib/inflate.js":64,"pako/lib/zlib/messages":66,"pako/lib/zlib/zstream":68}],4:[function(require,module,exports){
+},{"_process":94,"buffer":7,"pako/lib/zlib/constants":62,"pako/lib/zlib/deflate.js":64,"pako/lib/zlib/inflate.js":66,"pako/lib/zlib/messages":68,"pako/lib/zlib/zstream":70}],5:[function(require,module,exports){
 (function (process,Buffer){
 // Copyright Joyent, Inc. and other Node contributors.
 //
@@ -970,7 +1331,10 @@ util.inherits(InflateRaw, Zlib);
 util.inherits(Unzip, Zlib);
 
 }).call(this,require('_process'),require("buffer").Buffer)
-},{"./binding":3,"_process":92,"_stream_transform":104,"assert":42,"buffer":5,"util":119}],5:[function(require,module,exports){
+},{"./binding":4,"_process":94,"_stream_transform":105,"assert":1,"buffer":7,"util":119}],6:[function(require,module,exports){
+arguments[4][3][0].apply(exports,arguments)
+},{"dup":3}],7:[function(require,module,exports){
+(function (global){
 /*!
  * The buffer module from node.js, for the browser.
  *
@@ -983,57 +1347,80 @@ util.inherits(Unzip, Zlib);
 
 var base64 = require('base64-js')
 var ieee754 = require('ieee754')
+var isArray = require('isarray')
 
 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)
+ *   === false   Use 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()
+ * Due to various browser bugs, sometimes the Object implementation will be used even
+ * when the browser supports typed arrays.
+ *
+ * Note:
+ *
+ *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
+ *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
+ *
+ *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
+ *
+ *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
+ *     incorrect length in some situations.
 
-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.'
-  )
-}
+ * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
+ * get the Object implementation, which is slower but behaves correctly.
+ */
+Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined
+  ? global.TYPED_ARRAY_SUPPORT
+  : typedArraySupport()
+
+/*
+ * Export kMaxLength after typed array support is determined.
+ */
+exports.kMaxLength = kMaxLength()
 
 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
+    return arr.foo() === 42 && // typed array instances can be augmented
+        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
+        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
   } catch (e) {
     return false
   }
 }
 
-function createBuffer (length) {
-  if (length > K_MAX_LENGTH) {
+function kMaxLength () {
+  return Buffer.TYPED_ARRAY_SUPPORT
+    ? 0x7fffffff
+    : 0x3fffffff
+}
+
+function createBuffer (that, length) {
+  if (kMaxLength() < length) {
     throw new RangeError('Invalid typed array length')
   }
-  // Return an augmented `Uint8Array` instance
-  var buf = new Uint8Array(length)
-  buf.__proto__ = Buffer.prototype
-  return buf
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    // Return an augmented `Uint8Array` instance, for best performance
+    that = new Uint8Array(length)
+    that.__proto__ = Buffer.prototype
+  } else {
+    // Fallback: Return an object instance of the Buffer class
+    if (that === null) {
+      that = new Buffer(length)
+    }
+    that.length = length
+  }
+
+  return that
 }
 
 /**
@@ -1047,6 +1434,10 @@ function createBuffer (length) {
  */
 
 function Buffer (arg, encodingOrOffset, length) {
+  if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {
+    return new Buffer(arg, encodingOrOffset, length)
+  }
+
   // Common case.
   if (typeof arg === 'number') {
     if (typeof encodingOrOffset === 'string') {
@@ -1054,38 +1445,33 @@ function Buffer (arg, encodingOrOffset, length) {
         'If encoding is specified then the first argument must be a string'
       )
     }
-    return allocUnsafe(arg)
+    return allocUnsafe(this, arg)
   }
-  return from(arg, encodingOrOffset, length)
-}
-
-// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
-if (typeof Symbol !== 'undefined' && Symbol.species &&
-    Buffer[Symbol.species] === Buffer) {
-  Object.defineProperty(Buffer, Symbol.species, {
-    value: null,
-    configurable: true,
-    enumerable: false,
-    writable: false
-  })
+  return from(this, arg, encodingOrOffset, length)
 }
 
 Buffer.poolSize = 8192 // not used by this implementation
 
-function from (value, encodingOrOffset, length) {
+// TODO: Legacy, not needed anymore. Remove in next major version.
+Buffer._augment = function (arr) {
+  arr.__proto__ = Buffer.prototype
+  return arr
+}
+
+function from (that, value, encodingOrOffset, length) {
   if (typeof value === 'number') {
     throw new TypeError('"value" argument must not be a number')
   }
 
-  if (isArrayBuffer(value)) {
-    return fromArrayBuffer(value, encodingOrOffset, length)
+  if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
+    return fromArrayBuffer(that, value, encodingOrOffset, length)
   }
 
   if (typeof value === 'string') {
-    return fromString(value, encodingOrOffset)
+    return fromString(that, value, encodingOrOffset)
   }
 
-  return fromObject(value)
+  return fromObject(that, value)
 }
 
 /**
@@ -1097,13 +1483,21 @@ function from (value, encodingOrOffset, length) {
  * Buffer.from(arrayBuffer[, byteOffset[, length]])
  **/
 Buffer.from = function (value, encodingOrOffset, length) {
-  return from(value, encodingOrOffset, length)
+  return from(null, 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
+if (Buffer.TYPED_ARRAY_SUPPORT) {
+  Buffer.prototype.__proto__ = Uint8Array.prototype
+  Buffer.__proto__ = Uint8Array
+  if (typeof Symbol !== 'undefined' && Symbol.species &&
+      Buffer[Symbol.species] === Buffer) {
+    // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
+    Object.defineProperty(Buffer, Symbol.species, {
+      value: null,
+      configurable: true
+    })
+  }
+}
 
 function assertSize (size) {
   if (typeof size !== 'number') {
@@ -1113,20 +1507,20 @@ function assertSize (size) {
   }
 }
 
-function alloc (size, fill, encoding) {
+function alloc (that, size, fill, encoding) {
   assertSize(size)
   if (size <= 0) {
-    return createBuffer(size)
+    return createBuffer(that, 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)
+      ? createBuffer(that, size).fill(fill, encoding)
+      : createBuffer(that, size).fill(fill)
   }
-  return createBuffer(size)
+  return createBuffer(that, size)
 }
 
 /**
@@ -1134,28 +1528,34 @@ function alloc (size, fill, encoding) {
  * alloc(size[, fill[, encoding]])
  **/
 Buffer.alloc = function (size, fill, encoding) {
-  return alloc(size, fill, encoding)
+  return alloc(null, size, fill, encoding)
 }
 
-function allocUnsafe (size) {
+function allocUnsafe (that, size) {
   assertSize(size)
-  return createBuffer(size < 0 ? 0 : checked(size) | 0)
+  that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)
+  if (!Buffer.TYPED_ARRAY_SUPPORT) {
+    for (var i = 0; i < size; ++i) {
+      that[i] = 0
+    }
+  }
+  return that
 }
 
 /**
  * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
  * */
 Buffer.allocUnsafe = function (size) {
-  return allocUnsafe(size)
+  return allocUnsafe(null, size)
 }
 /**
  * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
  */
 Buffer.allocUnsafeSlow = function (size) {
-  return allocUnsafe(size)
+  return allocUnsafe(null, size)
 }
 
-function fromString (string, encoding) {
+function fromString (that, string, encoding) {
   if (typeof encoding !== 'string' || encoding === '') {
     encoding = 'utf8'
   }
@@ -1165,30 +1565,32 @@ function fromString (string, encoding) {
   }
 
   var length = byteLength(string, encoding) | 0
-  var buf = createBuffer(length)
+  that = createBuffer(that, length)
 
-  var actual = buf.write(string, encoding)
+  var actual = that.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)
+    that = that.slice(0, actual)
   }
 
-  return buf
+  return that
 }
 
-function fromArrayLike (array) {
+function fromArrayLike (that, array) {
   var length = array.length < 0 ? 0 : checked(array.length) | 0
-  var buf = createBuffer(length)
+  that = createBuffer(that, length)
   for (var i = 0; i < length; i += 1) {
-    buf[i] = array[i] & 255
+    that[i] = array[i] & 255
   }
-  return buf
+  return that
 }
 
-function fromArrayBuffer (array, byteOffset, length) {
+function fromArrayBuffer (that, array, byteOffset, length) {
+  array.byteLength // this throws if `array` is not a valid ArrayBuffer
+
   if (byteOffset < 0 || array.byteLength < byteOffset) {
     throw new RangeError('\'offset\' is out of bounds')
   }
@@ -1197,43 +1599,49 @@ function fromArrayBuffer (array, byteOffset, length) {
     throw new RangeError('\'length\' is out of bounds')
   }
 
-  var buf
   if (byteOffset === undefined && length === undefined) {
-    buf = new Uint8Array(array)
+    array = new Uint8Array(array)
   } else if (length === undefined) {
-    buf = new Uint8Array(array, byteOffset)
+    array = new Uint8Array(array, byteOffset)
   } else {
-    buf = new Uint8Array(array, byteOffset, length)
+    array = new Uint8Array(array, byteOffset, length)
   }
 
-  // Return an augmented `Uint8Array` instance
-  buf.__proto__ = Buffer.prototype
-  return buf
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    // Return an augmented `Uint8Array` instance, for best performance
+    that = array
+    that.__proto__ = Buffer.prototype
+  } else {
+    // Fallback: Return an object instance of the Buffer class
+    that = fromArrayLike(that, array)
+  }
+  return that
 }
 
-function fromObject (obj) {
+function fromObject (that, obj) {
   if (Buffer.isBuffer(obj)) {
     var len = checked(obj.length) | 0
-    var buf = createBuffer(len)
+    that = createBuffer(that, len)
 
-    if (buf.length === 0) {
-      return buf
+    if (that.length === 0) {
+      return that
     }
 
-    obj.copy(buf, 0, 0, len)
-    return buf
+    obj.copy(that, 0, 0, len)
+    return that
   }
 
   if (obj) {
-    if (isArrayBufferView(obj) || 'length' in obj) {
-      if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
-        return createBuffer(0)
+    if ((typeof ArrayBuffer !== 'undefined' &&
+        obj.buffer instanceof ArrayBuffer) || 'length' in obj) {
+      if (typeof obj.length !== 'number' || isnan(obj.length)) {
+        return createBuffer(that, 0)
       }
-      return fromArrayLike(obj)
+      return fromArrayLike(that, obj)
     }
 
-    if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
-      return fromArrayLike(obj.data)
+    if (obj.type === 'Buffer' && isArray(obj.data)) {
+      return fromArrayLike(that, obj.data)
     }
   }
 
@@ -1241,11 +1649,11 @@ function fromObject (obj) {
 }
 
 function checked (length) {
-  // Note: cannot use `length < K_MAX_LENGTH` here because that fails when
+  // Note: cannot use `length < kMaxLength()` here because that fails when
   // length is NaN (which is otherwise coerced to zero.)
-  if (length >= K_MAX_LENGTH) {
+  if (length >= kMaxLength()) {
     throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
-                         'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
+                         'size: 0x' + kMaxLength().toString(16) + ' bytes')
   }
   return length | 0
 }
@@ -1258,7 +1666,7 @@ function SlowBuffer (length) {
 }
 
 Buffer.isBuffer = function isBuffer (b) {
-  return b != null && b._isBuffer === true
+  return !!(b != null && b._isBuffer)
 }
 
 Buffer.compare = function compare (a, b) {
@@ -1304,7 +1712,7 @@ Buffer.isEncoding = function isEncoding (encoding) {
 }
 
 Buffer.concat = function concat (list, length) {
-  if (!Array.isArray(list)) {
+  if (!isArray(list)) {
     throw new TypeError('"list" argument must be an Array of Buffers')
   }
 
@@ -1337,7 +1745,8 @@ function byteLength (string, encoding) {
   if (Buffer.isBuffer(string)) {
     return string.length
   }
-  if (isArrayBufferView(string) || isArrayBuffer(string)) {
+  if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&
+      (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {
     return string.byteLength
   }
   if (typeof string !== 'string') {
@@ -1447,12 +1856,8 @@ function slowToString (encoding, start, end) {
   }
 }
 
-// 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
+// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
+// Buffer instances.
 Buffer.prototype._isBuffer = true
 
 function swap (b, n, m) {
@@ -1499,7 +1904,7 @@ Buffer.prototype.swap64 = function swap64 () {
 }
 
 Buffer.prototype.toString = function toString () {
-  var length = this.length
+  var length = this.length | 0
   if (length === 0) return ''
   if (arguments.length === 0) return utf8Slice(this, 0, length)
   return slowToString.apply(this, arguments)
@@ -1603,7 +2008,7 @@ function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
     byteOffset = -0x80000000
   }
   byteOffset = +byteOffset  // Coerce to Number.
-  if (numberIsNaN(byteOffset)) {
+  if (isNaN(byteOffset)) {
     // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
     byteOffset = dir ? 0 : (buffer.length - 1)
   }
@@ -1632,7 +2037,8 @@ function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
     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 (Buffer.TYPED_ARRAY_SUPPORT &&
+        typeof Uint8Array.prototype.indexOf === 'function') {
       if (dir) {
         return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
       } else {
@@ -1734,7 +2140,7 @@ function hexWrite (buf, string, offset, length) {
   }
   for (var i = 0; i < length; ++i) {
     var parsed = parseInt(string.substr(i * 2, 2), 16)
-    if (numberIsNaN(parsed)) return i
+    if (isNaN(parsed)) return i
     buf[offset + i] = parsed
   }
   return i
@@ -1773,14 +2179,15 @@ Buffer.prototype.write = function write (string, offset, length, encoding) {
     offset = 0
   // Buffer#write(string, offset[, length][, encoding])
   } else if (isFinite(offset)) {
-    offset = offset >>> 0
+    offset = offset | 0
     if (isFinite(length)) {
-      length = length >>> 0
+      length = length | 0
       if (encoding === undefined) encoding = 'utf8'
     } else {
       encoding = length
       length = undefined
     }
+  // legacy write(string, encoding, offset, length) - remove in v0.13
   } else {
     throw new Error(
       'Buffer.write(string, encoding, offset[, length]) is no longer supported'
@@ -1979,7 +2386,7 @@ 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))
+    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
   }
   return res
 }
@@ -2005,9 +2412,18 @@ Buffer.prototype.slice = function slice (start, end) {
 
   if (end < start) end = start
 
-  var newBuf = this.subarray(start, end)
-  // Return an augmented `Uint8Array` instance
-  newBuf.__proto__ = Buffer.prototype
+  var newBuf
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    newBuf = this.subarray(start, end)
+    newBuf.__proto__ = Buffer.prototype
+  } else {
+    var sliceLen = end - start
+    newBuf = new Buffer(sliceLen, undefined)
+    for (var i = 0; i < sliceLen; ++i) {
+      newBuf[i] = this[i + start]
+    }
+  }
+
   return newBuf
 }
 
@@ -2020,8 +2436,8 @@ function checkOffset (offset, ext, length) {
 }
 
 Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
-  offset = offset >>> 0
-  byteLength = byteLength >>> 0
+  offset = offset | 0
+  byteLength = byteLength | 0
   if (!noAssert) checkOffset(offset, byteLength, this.length)
 
   var val = this[offset]
@@ -2035,8 +2451,8 @@ Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert)
 }
 
 Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
-  offset = offset >>> 0
-  byteLength = byteLength >>> 0
+  offset = offset | 0
+  byteLength = byteLength | 0
   if (!noAssert) {
     checkOffset(offset, byteLength, this.length)
   }
@@ -2051,25 +2467,21 @@ Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert)
 }
 
 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]) |
@@ -2079,7 +2491,6 @@ Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
 }
 
 Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
-  offset = offset >>> 0
   if (!noAssert) checkOffset(offset, 4, this.length)
 
   return (this[offset] * 0x1000000) +
@@ -2089,8 +2500,8 @@ Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
 }
 
 Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
-  offset = offset >>> 0
-  byteLength = byteLength >>> 0
+  offset = offset | 0
+  byteLength = byteLength | 0
   if (!noAssert) checkOffset(offset, byteLength, this.length)
 
   var val = this[offset]
@@ -2107,8 +2518,8 @@ Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
 }
 
 Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
-  offset = offset >>> 0
-  byteLength = byteLength >>> 0
+  offset = offset | 0
+  byteLength = byteLength | 0
   if (!noAssert) checkOffset(offset, byteLength, this.length)
 
   var i = byteLength
@@ -2125,28 +2536,24 @@ Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
 }
 
 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]) |
@@ -2156,7 +2563,6 @@ Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
 }
 
 Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
-  offset = offset >>> 0
   if (!noAssert) checkOffset(offset, 4, this.length)
 
   return (this[offset] << 24) |
@@ -2166,25 +2572,21 @@ Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
 }
 
 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)
 }
@@ -2197,8 +2599,8 @@ function checkInt (buf, value, offset, ext, max, min) {
 
 Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
   value = +value
-  offset = offset >>> 0
-  byteLength = byteLength >>> 0
+  offset = offset | 0
+  byteLength = byteLength | 0
   if (!noAssert) {
     var maxBytes = Math.pow(2, 8 * byteLength) - 1
     checkInt(this, value, offset, byteLength, maxBytes, 0)
@@ -2216,8 +2618,8 @@ Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength,
 
 Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
   value = +value
-  offset = offset >>> 0
-  byteLength = byteLength >>> 0
+  offset = offset | 0
+  byteLength = byteLength | 0
   if (!noAssert) {
     var maxBytes = Math.pow(2, 8 * byteLength) - 1
     checkInt(this, value, offset, byteLength, maxBytes, 0)
@@ -2235,57 +2637,89 @@ Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength,
 
 Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
   value = +value
-  offset = offset >>> 0
+  offset = offset | 0
   if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
+  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
   this[offset] = (value & 0xff)
   return offset + 1
 }
 
+function objectWriteUInt16 (buf, value, offset, littleEndian) {
+  if (value < 0) value = 0xffff + value + 1
+  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {
+    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
+      (littleEndian ? i : 1 - i) * 8
+  }
+}
+
 Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
   value = +value
-  offset = offset >>> 0
+  offset = offset | 0
   if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
-  this[offset] = (value & 0xff)
-  this[offset + 1] = (value >>> 8)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value & 0xff)
+    this[offset + 1] = (value >>> 8)
+  } else {
+    objectWriteUInt16(this, value, offset, true)
+  }
   return offset + 2
 }
 
 Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
   value = +value
-  offset = offset >>> 0
+  offset = offset | 0
   if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
-  this[offset] = (value >>> 8)
-  this[offset + 1] = (value & 0xff)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value >>> 8)
+    this[offset + 1] = (value & 0xff)
+  } else {
+    objectWriteUInt16(this, value, offset, false)
+  }
   return offset + 2
 }
 
+function objectWriteUInt32 (buf, value, offset, littleEndian) {
+  if (value < 0) value = 0xffffffff + value + 1
+  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {
+    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
+  }
+}
+
 Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
   value = +value
-  offset = offset >>> 0
+  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)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset + 3] = (value >>> 24)
+    this[offset + 2] = (value >>> 16)
+    this[offset + 1] = (value >>> 8)
+    this[offset] = (value & 0xff)
+  } else {
+    objectWriteUInt32(this, value, offset, true)
+  }
   return offset + 4
 }
 
 Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
   value = +value
-  offset = offset >>> 0
+  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)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value >>> 24)
+    this[offset + 1] = (value >>> 16)
+    this[offset + 2] = (value >>> 8)
+    this[offset + 3] = (value & 0xff)
+  } else {
+    objectWriteUInt32(this, value, offset, false)
+  }
   return offset + 4
 }
 
 Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
   value = +value
-  offset = offset >>> 0
+  offset = offset | 0
   if (!noAssert) {
-    var limit = Math.pow(2, (8 * byteLength) - 1)
+    var limit = Math.pow(2, 8 * byteLength - 1)
 
     checkInt(this, value, offset, byteLength, limit - 1, -limit)
   }
@@ -2306,9 +2740,9 @@ Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, no
 
 Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
   value = +value
-  offset = offset >>> 0
+  offset = offset | 0
   if (!noAssert) {
-    var limit = Math.pow(2, (8 * byteLength) - 1)
+    var limit = Math.pow(2, 8 * byteLength - 1)
 
     checkInt(this, value, offset, byteLength, limit - 1, -limit)
   }
@@ -2329,8 +2763,9 @@ Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, no
 
 Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
   value = +value
-  offset = offset >>> 0
+  offset = offset | 0
   if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
+  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
   if (value < 0) value = 0xff + value + 1
   this[offset] = (value & 0xff)
   return offset + 1
@@ -2338,42 +2773,58 @@ Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
 
 Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
   value = +value
-  offset = offset >>> 0
+  offset = offset | 0
   if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
-  this[offset] = (value & 0xff)
-  this[offset + 1] = (value >>> 8)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value & 0xff)
+    this[offset + 1] = (value >>> 8)
+  } else {
+    objectWriteUInt16(this, value, offset, true)
+  }
   return offset + 2
 }
 
 Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
   value = +value
-  offset = offset >>> 0
+  offset = offset | 0
   if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
-  this[offset] = (value >>> 8)
-  this[offset + 1] = (value & 0xff)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value >>> 8)
+    this[offset + 1] = (value & 0xff)
+  } else {
+    objectWriteUInt16(this, value, offset, false)
+  }
   return offset + 2
 }
 
 Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
   value = +value
-  offset = offset >>> 0
+  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)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value & 0xff)
+    this[offset + 1] = (value >>> 8)
+    this[offset + 2] = (value >>> 16)
+    this[offset + 3] = (value >>> 24)
+  } else {
+    objectWriteUInt32(this, value, offset, true)
+  }
   return offset + 4
 }
 
 Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
   value = +value
-  offset = offset >>> 0
+  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)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value >>> 24)
+    this[offset + 1] = (value >>> 16)
+    this[offset + 2] = (value >>> 8)
+    this[offset + 3] = (value & 0xff)
+  } else {
+    objectWriteUInt32(this, value, offset, false)
+  }
   return offset + 4
 }
 
@@ -2383,8 +2834,6 @@ function checkIEEE754 (buf, value, offset, ext, max, min) {
 }
 
 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)
   }
@@ -2401,8 +2850,6 @@ Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, 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)
   }
@@ -2451,7 +2898,7 @@ Buffer.prototype.copy = function copy (target, targetStart, start, end) {
     for (i = len - 1; i >= 0; --i) {
       target[i + targetStart] = this[i + start]
     }
-  } else if (len < 1000) {
+  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
     // ascending copy from start
     for (i = 0; i < len; ++i) {
       target[i + targetStart] = this[i + start]
@@ -2520,7 +2967,7 @@ Buffer.prototype.fill = function fill (val, start, end, encoding) {
   } else {
     var bytes = Buffer.isBuffer(val)
       ? val
-      : new Buffer(val, encoding)
+      : utf8ToBytes(new Buffer(val, encoding).toString())
     var len = bytes.length
     for (i = 0; i < end - start; ++i) {
       this[i + start] = bytes[i % len]
@@ -2533,11 +2980,11 @@ Buffer.prototype.fill = function fill (val, start, end, encoding) {
 // HELPER FUNCTIONS
 // ================
 
-var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g
+var INVALID_BASE64_RE = /[^+\/0-9A-Za-z-_]/g
 
 function base64clean (str) {
   // Node strips out invalid characters like \n and \t from the string, base64-js does not
-  str = str.trim().replace(INVALID_BASE64_RE, '')
+  str = stringtrim(str).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
@@ -2547,6 +2994,11 @@ function base64clean (str) {
   return str
 }
 
+function stringtrim (str) {
+  if (str.trim) return str.trim()
+  return str.replace(/^\s+|\s+$/g, '')
+}
+
 function toHex (n) {
   if (n < 16) return '0' + n.toString(16)
   return n.toString(16)
@@ -2669,24 +3121,131 @@ function blitBuffer (src, dst, offset, length) {
   return i
 }
 
-// ArrayBuffers from another context (i.e. an iframe) do not pass the `instanceof` check
-// but they should be treated as valid. See: https://github.com/feross/buffer/issues/166
-function isArrayBuffer (obj) {
-  return obj instanceof ArrayBuffer ||
-    (obj != null && obj.constructor != null && obj.constructor.name === 'ArrayBuffer' &&
-      typeof obj.byteLength === 'number')
+function isnan (val) {
+  return val !== val // eslint-disable-line no-self-compare
 }
 
-// Node 0.10 supports `ArrayBuffer` but lacks `ArrayBuffer.isView`
-function isArrayBufferView (obj) {
-  return (typeof ArrayBuffer.isView === 'function') && ArrayBuffer.isView(obj)
+}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"base64-js":2,"ieee754":46,"isarray":8}],8:[function(require,module,exports){
+var toString = {}.toString;
+
+module.exports = Array.isArray || function (arr) {
+  return toString.call(arr) == '[object Array]';
+};
+
+},{}],9:[function(require,module,exports){
+(function (global){
+'use strict';
+
+var buffer = require('buffer');
+var Buffer = buffer.Buffer;
+var SlowBuffer = buffer.SlowBuffer;
+var MAX_LEN = buffer.kMaxLength || 2147483647;
+exports.alloc = function alloc(size, fill, encoding) {
+  if (typeof Buffer.alloc === 'function') {
+    return Buffer.alloc(size, fill, encoding);
+  }
+  if (typeof encoding === 'number') {
+    throw new TypeError('encoding must not be number');
+  }
+  if (typeof size !== 'number') {
+    throw new TypeError('size must be a number');
+  }
+  if (size > MAX_LEN) {
+    throw new RangeError('size is too large');
+  }
+  var enc = encoding;
+  var _fill = fill;
+  if (_fill === undefined) {
+    enc = undefined;
+    _fill = 0;
+  }
+  var buf = new Buffer(size);
+  if (typeof _fill === 'string') {
+    var fillBuf = new Buffer(_fill, enc);
+    var flen = fillBuf.length;
+    var i = -1;
+    while (++i < size) {
+      buf[i] = fillBuf[i % flen];
+    }
+  } else {
+    buf.fill(_fill);
+  }
+  return buf;
+}
+exports.allocUnsafe = function allocUnsafe(size) {
+  if (typeof Buffer.allocUnsafe === 'function') {
+    return Buffer.allocUnsafe(size);
+  }
+  if (typeof size !== 'number') {
+    throw new TypeError('size must be a number');
+  }
+  if (size > MAX_LEN) {
+    throw new RangeError('size is too large');
+  }
+  return new Buffer(size);
+}
+exports.from = function from(value, encodingOrOffset, length) {
+  if (typeof Buffer.from === 'function' && (!global.Uint8Array || Uint8Array.from !== Buffer.from)) {
+    return Buffer.from(value, encodingOrOffset, length);
+  }
+  if (typeof value === 'number') {
+    throw new TypeError('"value" argument must not be a number');
+  }
+  if (typeof value === 'string') {
+    return new Buffer(value, encodingOrOffset);
+  }
+  if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
+    var offset = encodingOrOffset;
+    if (arguments.length === 1) {
+      return new Buffer(value);
+    }
+    if (typeof offset === 'undefined') {
+      offset = 0;
+    }
+    var len = length;
+    if (typeof len === 'undefined') {
+      len = value.byteLength - offset;
+    }
+    if (offset >= value.byteLength) {
+      throw new RangeError('\'offset\' is out of bounds');
+    }
+    if (len > value.byteLength - offset) {
+      throw new RangeError('\'length\' is out of bounds');
+    }
+    return new Buffer(value.slice(offset, offset + len));
+  }
+  if (Buffer.isBuffer(value)) {
+    var out = new Buffer(value.length);
+    value.copy(out, 0, 0, value.length);
+    return out;
+  }
+  if (value) {
+    if (Array.isArray(value) || (typeof ArrayBuffer !== 'undefined' && value.buffer instanceof ArrayBuffer) || 'length' in value) {
+      return new Buffer(value);
+    }
+    if (value.type === 'Buffer' && Array.isArray(value.data)) {
+      return new Buffer(value.data);
+    }
+  }
+
+  throw new TypeError('First argument must be a string, Buffer, ' + 'ArrayBuffer, Array, or array-like object.');
+}
+exports.allocUnsafeSlow = function allocUnsafeSlow(size) {
+  if (typeof Buffer.allocUnsafeSlow === 'function') {
+    return Buffer.allocUnsafeSlow(size);
+  }
+  if (typeof size !== 'number') {
+    throw new TypeError('size must be a number');
+  }
+  if (size >= MAX_LEN) {
+    throw new RangeError('size is too large');
+  }
+  return new SlowBuffer(size);
 }
 
-function numberIsNaN (obj) {
-  return obj !== obj // eslint-disable-line no-self-compare
-}
-
-},{"base64-js":1,"ieee754":44}],6:[function(require,module,exports){
+}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"buffer":7}],10:[function(require,module,exports){
 (function (Buffer){
 /**!
  * contentstream - index.js
@@ -2735,12 +3294,12 @@ ContentStream.prototype._read = function (n) {
 };
 
 }).call(this,require("buffer").Buffer)
-},{"buffer":5,"readable-stream":13,"util":119}],7:[function(require,module,exports){
+},{"buffer":7,"readable-stream":17,"util":119}],11:[function(require,module,exports){
 module.exports = Array.isArray || function (arr) {
   return Object.prototype.toString.call(arr) == '[object Array]';
 };
 
-},{}],8:[function(require,module,exports){
+},{}],12:[function(require,module,exports){
 (function (process){
 // Copyright Joyent, Inc. and other Node contributors.
 //
@@ -2833,7 +3392,7 @@ function forEach (xs, f) {
 }
 
 }).call(this,require('_process'))
-},{"./_stream_readable":10,"./_stream_writable":12,"_process":92,"core-util-is":15,"inherits":45}],9:[function(require,module,exports){
+},{"./_stream_readable":14,"./_stream_writable":16,"_process":94,"core-util-is":19,"inherits":47}],13:[function(require,module,exports){
 // Copyright Joyent, Inc. and other Node contributors.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
@@ -2881,7 +3440,7 @@ PassThrough.prototype._transform = function(chunk, encoding, cb) {
   cb(null, chunk);
 };
 
-},{"./_stream_transform":11,"core-util-is":15,"inherits":45}],10:[function(require,module,exports){
+},{"./_stream_transform":15,"core-util-is":19,"inherits":47}],14:[function(require,module,exports){
 (function (process){
 // Copyright Joyent, Inc. and other Node contributors.
 //
@@ -3867,7 +4426,7 @@ function indexOf (xs, x) {
 }
 
 }).call(this,require('_process'))
-},{"_process":92,"buffer":5,"core-util-is":15,"events":20,"inherits":45,"isarray":7,"stream":111,"string_decoder/":14}],11:[function(require,module,exports){
+},{"_process":94,"buffer":7,"core-util-is":19,"events":24,"inherits":47,"isarray":11,"stream":111,"string_decoder/":18}],15:[function(require,module,exports){
 // Copyright Joyent, Inc. and other Node contributors.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
@@ -4079,7 +4638,7 @@ function done(stream, er) {
   return stream.push(null);
 }
 
-},{"./_stream_duplex":8,"core-util-is":15,"inherits":45}],12:[function(require,module,exports){
+},{"./_stream_duplex":12,"core-util-is":19,"inherits":47}],16:[function(require,module,exports){
 (function (process){
 // Copyright Joyent, Inc. and other Node contributors.
 //
@@ -4469,7 +5028,7 @@ function endWritable(stream, state, cb) {
 }
 
 }).call(this,require('_process'))
-},{"./_stream_duplex":8,"_process":92,"buffer":5,"core-util-is":15,"inherits":45,"stream":111}],13:[function(require,module,exports){
+},{"./_stream_duplex":12,"_process":94,"buffer":7,"core-util-is":19,"inherits":47,"stream":111}],17:[function(require,module,exports){
 (function (process){
 var Stream = require('stream'); // hack to fix a circular dependency issue when used with browserify
 exports = module.exports = require('./lib/_stream_readable.js');
@@ -4484,7 +5043,7 @@ if (!process.browser && process.env.READABLE_STREAM === 'disable') {
 }
 
 }).call(this,require('_process'))
-},{"./lib/_stream_duplex.js":8,"./lib/_stream_passthrough.js":9,"./lib/_stream_readable.js":10,"./lib/_stream_transform.js":11,"./lib/_stream_writable.js":12,"_process":92,"stream":111}],14:[function(require,module,exports){
+},{"./lib/_stream_duplex.js":12,"./lib/_stream_passthrough.js":13,"./lib/_stream_readable.js":14,"./lib/_stream_transform.js":15,"./lib/_stream_writable.js":16,"_process":94,"stream":111}],18:[function(require,module,exports){
 // Copyright Joyent, Inc. and other Node contributors.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
@@ -4707,7 +5266,7 @@ function base64DetectIncompleteChar(buffer) {
   this.charLength = this.charReceived ? 3 : 0;
 }
 
-},{"buffer":5}],15:[function(require,module,exports){
+},{"buffer":7}],19:[function(require,module,exports){
 (function (Buffer){
 // Copyright Joyent, Inc. and other Node contributors.
 //
@@ -4818,566 +5377,562 @@ function objectToString(o) {
 }
 
 }).call(this,{"isBuffer":require("../../is-buffer/index.js")})
-},{"../../is-buffer/index.js":47}],16:[function(require,module,exports){
-"use strict"
+},{"../../is-buffer/index.js":49}],20:[function(require,module,exports){
+"use strict"
+
+var createThunk = require("./lib/thunk.js")
+
+function Procedure() {
+  this.argTypes = []
+  this.shimArgs = []
+  this.arrayArgs = []
+  this.arrayBlockIndices = []
+  this.scalarArgs = []
+  this.offsetArgs = []
+  this.offsetArgIndex = []
+  this.indexArgs = []
+  this.shapeArgs = []
+  this.funcName = ""
+  this.pre = null
+  this.body = null
+  this.post = null
+  this.debug = false
+}
+
+function compileCwise(user_args) {
+  //Create procedure
+  var proc = new Procedure()
+  
+  //Parse blocks
+  proc.pre    = user_args.pre
+  proc.body   = user_args.body
+  proc.post   = user_args.post
+
+  //Parse arguments
+  var proc_args = user_args.args.slice(0)
+  proc.argTypes = proc_args
+  for(var i=0; i<proc_args.length; ++i) {
+    var arg_type = proc_args[i]
+    if(arg_type === "array" || (typeof arg_type === "object" && arg_type.blockIndices)) {
+      proc.argTypes[i] = "array"
+      proc.arrayArgs.push(i)
+      proc.arrayBlockIndices.push(arg_type.blockIndices ? arg_type.blockIndices : 0)
+      proc.shimArgs.push("array" + i)
+      if(i < proc.pre.args.length && proc.pre.args[i].count>0) {
+        throw new Error("cwise: pre() block may not reference array args")
+      }
+      if(i < proc.post.args.length && proc.post.args[i].count>0) {
+        throw new Error("cwise: post() block may not reference array args")
+      }
+    } else if(arg_type === "scalar") {
+      proc.scalarArgs.push(i)
+      proc.shimArgs.push("scalar" + i)
+    } else if(arg_type === "index") {
+      proc.indexArgs.push(i)
+      if(i < proc.pre.args.length && proc.pre.args[i].count > 0) {
+        throw new Error("cwise: pre() block may not reference array index")
+      }
+      if(i < proc.body.args.length && proc.body.args[i].lvalue) {
+        throw new Error("cwise: body() block may not write to array index")
+      }
+      if(i < proc.post.args.length && proc.post.args[i].count > 0) {
+        throw new Error("cwise: post() block may not reference array index")
+      }
+    } else if(arg_type === "shape") {
+      proc.shapeArgs.push(i)
+      if(i < proc.pre.args.length && proc.pre.args[i].lvalue) {
+        throw new Error("cwise: pre() block may not write to array shape")
+      }
+      if(i < proc.body.args.length && proc.body.args[i].lvalue) {
+        throw new Error("cwise: body() block may not write to array shape")
+      }
+      if(i < proc.post.args.length && proc.post.args[i].lvalue) {
+        throw new Error("cwise: post() block may not write to array shape")
+      }
+    } else if(typeof arg_type === "object" && arg_type.offset) {
+      proc.argTypes[i] = "offset"
+      proc.offsetArgs.push({ array: arg_type.array, offset:arg_type.offset })
+      proc.offsetArgIndex.push(i)
+    } else {
+      throw new Error("cwise: Unknown argument type " + proc_args[i])
+    }
+  }
+  
+  //Make sure at least one array argument was specified
+  if(proc.arrayArgs.length <= 0) {
+    throw new Error("cwise: No array arguments specified")
+  }
+  
+  //Make sure arguments are correct
+  if(proc.pre.args.length > proc_args.length) {
+    throw new Error("cwise: Too many arguments in pre() block")
+  }
+  if(proc.body.args.length > proc_args.length) {
+    throw new Error("cwise: Too many arguments in body() block")
+  }
+  if(proc.post.args.length > proc_args.length) {
+    throw new Error("cwise: Too many arguments in post() block")
+  }
+
+  //Check debug flag
+  proc.debug = !!user_args.printCode || !!user_args.debug
+  
+  //Retrieve name
+  proc.funcName = user_args.funcName || "cwise"
+  
+  //Read in block size
+  proc.blockSize = user_args.blockSize || 64
+
+  return createThunk(proc)
+}
+
+module.exports = compileCwise
 
-var createThunk = require("./lib/thunk.js")
+},{"./lib/thunk.js":22}],21:[function(require,module,exports){
+"use strict"
+
+var uniq = require("uniq")
+
+// This function generates very simple loops analogous to how you typically traverse arrays (the outermost loop corresponds to the slowest changing index, the innermost loop to the fastest changing index)
+// TODO: If two arrays have the same strides (and offsets) there is potential for decreasing the number of "pointers" and related variables. The drawback is that the type signature would become more specific and that there would thus be less potential for caching, but it might still be worth it, especially when dealing with large numbers of arguments.
+function innerFill(order, proc, body) {
+  var dimension = order.length
+    , nargs = proc.arrayArgs.length
+    , has_index = proc.indexArgs.length>0
+    , code = []
+    , vars = []
+    , idx=0, pidx=0, i, j
+  for(i=0; i<dimension; ++i) { // Iteration variables
+    vars.push(["i",i,"=0"].join(""))
+  }
+  //Compute scan deltas
+  for(j=0; j<nargs; ++j) {
+    for(i=0; i<dimension; ++i) {
+      pidx = idx
+      idx = order[i]
+      if(i === 0) { // The innermost/fastest dimension's delta is simply its stride
+        vars.push(["d",j,"s",i,"=t",j,"p",idx].join(""))
+      } else { // For other dimensions the delta is basically the stride minus something which essentially "rewinds" the previous (more inner) dimension
+        vars.push(["d",j,"s",i,"=(t",j,"p",idx,"-s",pidx,"*t",j,"p",pidx,")"].join(""))
+      }
+    }
+  }
+  code.push("var " + vars.join(","))
+  //Scan loop
+  for(i=dimension-1; i>=0; --i) { // Start at largest stride and work your way inwards
+    idx = order[i]
+    code.push(["for(i",i,"=0;i",i,"<s",idx,";++i",i,"){"].join(""))
+  }
+  //Push body of inner loop
+  code.push(body)
+  //Advance scan pointers
+  for(i=0; i<dimension; ++i) {
+    pidx = idx
+    idx = order[i]
+    for(j=0; j<nargs; ++j) {
+      code.push(["p",j,"+=d",j,"s",i].join(""))
+    }
+    if(has_index) {
+      if(i > 0) {
+        code.push(["index[",pidx,"]-=s",pidx].join(""))
+      }
+      code.push(["++index[",idx,"]"].join(""))
+    }
+    code.push("}")
+  }
+  return code.join("\n")
+}
+
+// Generate "outer" loops that loop over blocks of data, applying "inner" loops to the blocks by manipulating the local variables in such a way that the inner loop only "sees" the current block.
+// TODO: If this is used, then the previous declaration (done by generateCwiseOp) of s* is essentially unnecessary.
+//       I believe the s* are not used elsewhere (in particular, I don't think they're used in the pre/post parts and "shape" is defined independently), so it would be possible to make defining the s* dependent on what loop method is being used.
+function outerFill(matched, order, proc, body) {
+  var dimension = order.length
+    , nargs = proc.arrayArgs.length
+    , blockSize = proc.blockSize
+    , has_index = proc.indexArgs.length > 0
+    , code = []
+  for(var i=0; i<nargs; ++i) {
+    code.push(["var offset",i,"=p",i].join(""))
+  }
+  //Generate loops for unmatched dimensions
+  // The order in which these dimensions are traversed is fairly arbitrary (from small stride to large stride, for the first argument)
+  // TODO: It would be nice if the order in which these loops are placed would also be somehow "optimal" (at the very least we should check that it really doesn't hurt us if they're not).
+  for(var i=matched; i<dimension; ++i) {
+    code.push(["for(var j"+i+"=SS[", order[i], "]|0;j", i, ">0;){"].join("")) // Iterate back to front
+    code.push(["if(j",i,"<",blockSize,"){"].join("")) // Either decrease j by blockSize (s = blockSize), or set it to zero (after setting s = j).
+    code.push(["s",order[i],"=j",i].join(""))
+    code.push(["j",i,"=0"].join(""))
+    code.push(["}else{s",order[i],"=",blockSize].join(""))
+    code.push(["j",i,"-=",blockSize,"}"].join(""))
+    if(has_index) {
+      code.push(["index[",order[i],"]=j",i].join(""))
+    }
+  }
+  for(var i=0; i<nargs; ++i) {
+    var indexStr = ["offset"+i]
+    for(var j=matched; j<dimension; ++j) {
+      indexStr.push(["j",j,"*t",i,"p",order[j]].join(""))
+    }
+    code.push(["p",i,"=(",indexStr.join("+"),")"].join(""))
+  }
+  code.push(innerFill(order, proc, body))
+  for(var i=matched; i<dimension; ++i) {
+    code.push("}")
+  }
+  return code.join("\n")
+}
+
+//Count the number of compatible inner orders
+// This is the length of the longest common prefix of the arrays in orders.
+// Each array in orders lists the dimensions of the correspond ndarray in order of increasing stride.
+// This is thus the maximum number of dimensions that can be efficiently traversed by simple nested loops for all arrays.
+function countMatches(orders) {
+  var matched = 0, dimension = orders[0].length
+  while(matched < dimension) {
+    for(var j=1; j<orders.length; ++j) {
+      if(orders[j][matched] !== orders[0][matched]) {
+        return matched
+      }
+    }
+    ++matched
+  }
+  return matched
+}
+
+//Processes a block according to the given data types
+// Replaces variable names by different ones, either "local" ones (that are then ferried in and out of the given array) or ones matching the arguments that the function performing the ultimate loop will accept.
+function processBlock(block, proc, dtypes) {
+  var code = block.body
+  var pre = []
+  var post = []
+  for(var i=0; i<block.args.length; ++i) {
+    var carg = block.args[i]
+    if(carg.count <= 0) {
+      continue
+    }
+    var re = new RegExp(carg.name, "g")
+    var ptrStr = ""
+    var arrNum = proc.arrayArgs.indexOf(i)
+    switch(proc.argTypes[i]) {
+      case "offset":
+        var offArgIndex = proc.offsetArgIndex.indexOf(i)
+        var offArg = proc.offsetArgs[offArgIndex]
+        arrNum = offArg.array
+        ptrStr = "+q" + offArgIndex // Adds offset to the "pointer" in the array
+      case "array":
+        ptrStr = "p" + arrNum + ptrStr
+        var localStr = "l" + i
+        var arrStr = "a" + arrNum
+        if (proc.arrayBlockIndices[arrNum] === 0) { // Argument to body is just a single value from this array
+          if(carg.count === 1) { // Argument/array used only once(?)
+            if(dtypes[arrNum] === "generic") {
+              if(carg.lvalue) {
+                pre.push(["var ", localStr, "=", arrStr, ".get(", ptrStr, ")"].join("")) // Is this necessary if the argument is ONLY used as an lvalue? (keep in mind that we can have a += something, so we would actually need to check carg.rvalue)
+                code = code.replace(re, localStr)
+                post.push([arrStr, ".set(", ptrStr, ",", localStr,")"].join(""))
+              } else {
+                code = code.replace(re, [arrStr, ".get(", ptrStr, ")"].join(""))
+              }
+            } else {
+              code = code.replace(re, [arrStr, "[", ptrStr, "]"].join(""))
+            }
+          } else if(dtypes[arrNum] === "generic") {
+            pre.push(["var ", localStr, "=", arrStr, ".get(", ptrStr, ")"].join("")) // TODO: Could we optimize by checking for carg.rvalue?
+            code = code.replace(re, localStr)
+            if(carg.lvalue) {
+              post.push([arrStr, ".set(", ptrStr, ",", localStr,")"].join(""))
+            }
+          } else {
+            pre.push(["var ", localStr, "=", arrStr, "[", ptrStr, "]"].join("")) // TODO: Could we optimize by checking for carg.rvalue?
+            code = code.replace(re, localStr)
+            if(carg.lvalue) {
+              post.push([arrStr, "[", ptrStr, "]=", localStr].join(""))
+            }
+          }
+        } else { // Argument to body is a "block"
+          var reStrArr = [carg.name], ptrStrArr = [ptrStr]
+          for(var j=0; j<Math.abs(proc.arrayBlockIndices[arrNum]); j++) {
+            reStrArr.push("\\s*\\[([^\\]]+)\\]")
+            ptrStrArr.push("$" + (j+1) + "*t" + arrNum + "b" + j) // Matched index times stride
+          }
+          re = new RegExp(reStrArr.join(""), "g")
+          ptrStr = ptrStrArr.join("+")
+          if(dtypes[arrNum] === "generic") {
+            /*if(carg.lvalue) {
+              pre.push(["var ", localStr, "=", arrStr, ".get(", ptrStr, ")"].join("")) // Is this necessary if the argument is ONLY used as an lvalue? (keep in mind that we can have a += something, so we would actually need to check carg.rvalue)
+              code = code.replace(re, localStr)
+              post.push([arrStr, ".set(", ptrStr, ",", localStr,")"].join(""))
+            } else {
+              code = code.replace(re, [arrStr, ".get(", ptrStr, ")"].join(""))
+            }*/
+            throw new Error("cwise: Generic arrays not supported in combination with blocks!")
+          } else {
+            // This does not produce any local variables, even if variables are used multiple times. It would be possible to do so, but it would complicate things quite a bit.
+            code = code.replace(re, [arrStr, "[", ptrStr, "]"].join(""))
+          }
+        }
+      break
+      case "scalar":
+        code = code.replace(re, "Y" + proc.scalarArgs.indexOf(i))
+      break
+      case "index":
+        code = code.replace(re, "index")
+      break
+      case "shape":
+        code = code.replace(re, "shape")
+      break
+    }
+  }
+  return [pre.join("\n"), code, post.join("\n")].join("\n").trim()
+}
+
+function typeSummary(dtypes) {
+  var summary = new Array(dtypes.length)
+  var allEqual = true
+  for(var i=0; i<dtypes.length; ++i) {
+    var t = dtypes[i]
+    var digits = t.match(/\d+/)
+    if(!digits) {
+      digits = ""
+    } else {
+      digits = digits[0]
+    }
+    if(t.charAt(0) === 0) {
+      summary[i] = "u" + t.charAt(1) + digits
+    } else {
+      summary[i] = t.charAt(0) + digits
+    }
+    if(i > 0) {
+      allEqual = allEqual && summary[i] === summary[i-1]
+    }
+  }
+  if(allEqual) {
+    return summary[0]
+  }
+  return summary.join("")
+}
+
+//Generates a cwise operator
+function generateCWiseOp(proc, typesig) {
+
+  //Compute dimension
+  // Arrays get put first in typesig, and there are two entries per array (dtype and order), so this gets the number of dimensions in the first array arg.
+  var dimension = (typesig[1].length - Math.abs(proc.arrayBlockIndices[0]))|0
+  var orders = new Array(proc.arrayArgs.length)
+  var dtypes = new Array(proc.arrayArgs.length)
+  for(var i=0; i<proc.arrayArgs.length; ++i) {
+    dtypes[i] = typesig[2*i]
+    orders[i] = typesig[2*i+1]
+  }
+  
+  //Determine where block and loop indices start and end
+  var blockBegin = [], blockEnd = [] // These indices are exposed as blocks
+  var loopBegin = [], loopEnd = [] // These indices are iterated over
+  var loopOrders = [] // orders restricted to the loop indices
+  for(var i=0; i<proc.arrayArgs.length; ++i) {
+    if (proc.arrayBlockIndices[i]<0) {
+      loopBegin.push(0)
+      loopEnd.push(dimension)
+      blockBegin.push(dimension)
+      blockEnd.push(dimension+proc.arrayBlockIndices[i])
+    } else {
+      loopBegin.push(proc.arrayBlockIndices[i]) // Non-negative
+      loopEnd.push(proc.arrayBlockIndices[i]+dimension)
+      blockBegin.push(0)
+      blockEnd.push(proc.arrayBlockIndices[i])
+    }
+    var newOrder = []
+    for(var j=0; j<orders[i].length; j++) {
+      if (loopBegin[i]<=orders[i][j] && orders[i][j]<loopEnd[i]) {
+        newOrder.push(orders[i][j]-loopBegin[i]) // If this is a loop index, put it in newOrder, subtracting loopBegin, to make sure that all loopOrders are using a common set of indices.
+      }
+    }
+    loopOrders.push(newOrder)
+  }
+
+  //First create arguments for procedure
+  var arglist = ["SS"] // SS is the overall shape over which we iterate
+  var code = ["'use strict'"]
+  var vars = []
+  
+  for(var j=0; j<dimension; ++j) {
+    vars.push(["s", j, "=SS[", j, "]"].join("")) // The limits for each dimension.
+  }
+  for(var i=0; i<proc.arrayArgs.length; ++i) {
+    arglist.push("a"+i) // Actual data array
+    arglist.push("t"+i) // Strides
+    arglist.push("p"+i) // Offset in the array at which the data starts (also used for iterating over the data)
+    
+    for(var j=0; j<dimension; ++j) { // Unpack the strides into vars for looping
+      vars.push(["t",i,"p",j,"=t",i,"[",loopBegin[i]+j,"]"].join(""))
+    }
+    
+    for(var j=0; j<Math.abs(proc.arrayBlockIndices[i]); ++j) { // Unpack the strides into vars for block iteration
+      vars.push(["t",i,"b",j,"=t",i,"[",blockBegin[i]+j,"]"].join(""))
+    }
+  }
+  for(var i=0; i<proc.scalarArgs.length; ++i) {
+    arglist.push("Y" + i)
+  }
+  if(proc.shapeArgs.length > 0) {
+    vars.push("shape=SS.slice(0)") // Makes the shape over which we iterate available to the user defined functions (so you can use width/height for example)
+  }
+  if(proc.indexArgs.length > 0) {
+    // Prepare an array to keep track of the (logical) indices, initialized to dimension zeroes.
+    var zeros = new Array(dimension)
+    for(var i=0; i<dimension; ++i) {
+      zeros[i] = "0"
+    }
+    vars.push(["index=[", zeros.join(","), "]"].join(""))
+  }
+  for(var i=0; i<proc.offsetArgs.length; ++i) { // Offset arguments used for stencil operations
+    var off_arg = proc.offsetArgs[i]
+    var init_string = []
+    for(var j=0; j<off_arg.offset.length; ++j) {
+      if(off_arg.offset[j] === 0) {
+        continue
+      } else if(off_arg.offset[j] === 1) {
+        init_string.push(["t", off_arg.array, "p", j].join(""))      
+      } else {
+        init_string.push([off_arg.offset[j], "*t", off_arg.array, "p", j].join(""))
+      }
+    }
+    if(init_string.length === 0) {
+      vars.push("q" + i + "=0")
+    } else {
+      vars.push(["q", i, "=", init_string.join("+")].join(""))
+    }
+  }
+
+  //Prepare this variables
+  var thisVars = uniq([].concat(proc.pre.thisVars)
+                      .concat(proc.body.thisVars)
+                      .concat(proc.post.thisVars))
+  vars = vars.concat(thisVars)
+  code.push("var " + vars.join(","))
+  for(var i=0; i<proc.arrayArgs.length; ++i) {
+    code.push("p"+i+"|=0")
+  }
+  
+  //Inline prelude
+  if(proc.pre.body.length > 3) {
+    code.push(processBlock(proc.pre, proc, dtypes))
+  }
+
+  //Process body
+  var body = processBlock(proc.body, proc, dtypes)
+  var matched = countMatches(loopOrders)
+  if(matched < dimension) {
+    code.push(outerFill(matched, loopOrders[0], proc, body)) // TODO: Rather than passing loopOrders[0], it might be interesting to look at passing an order that represents the majority of the arguments for example.
+  } else {
+    code.push(innerFill(loopOrders[0], proc, body))
+  }
+
+  //Inline epilog
+  if(proc.post.body.length > 3) {
+    code.push(processBlock(proc.post, proc, dtypes))
+  }
+  
+  if(proc.debug) {
+    console.log("-----Generated cwise routine for ", typesig, ":\n" + code.join("\n") + "\n----------")
+  }
+  
+  var loopName = [(proc.funcName||"unnamed"), "_cwise_loop_", orders[0].join("s"),"m",matched,typeSummary(dtypes)].join("")
+  var f = new Function(["function ",loopName,"(", arglist.join(","),"){", code.join("\n"),"} return ", loopName].join(""))
+  return f()
+}
+module.exports = generateCWiseOp
 
-function Procedure() {
-  this.argTypes = []
-  this.shimArgs = []
-  this.arrayArgs = []
-  this.arrayBlockIndices = []
-  this.scalarArgs = []
-  this.offsetArgs = []
-  this.offsetArgIndex = []
-  this.indexArgs = []
-  this.shapeArgs = []
-  this.funcName = ""
-  this.pre = null
-  this.body = null
-  this.post = null
-  this.debug = false
-}
+},{"uniq":114}],22:[function(require,module,exports){
+"use strict"
+
+// The function below is called when constructing a cwise function object, and does the following:
+// A function object is constructed which accepts as argument a compilation function and returns another function.
+// It is this other function that is eventually returned by createThunk, and this function is the one that actually
+// checks whether a certain pattern of arguments has already been used before and compiles new loops as needed.
+// The compilation passed to the first function object is used for compiling new functions.
+// Once this function object is created, it is called with compile as argument, where the first argument of compile
+// is bound to "proc" (essentially containing a preprocessed version of the user arguments to cwise).
+// So createThunk roughly works like this:
+// function createThunk(proc) {
+//   var thunk = function(compileBound) {
+//     var CACHED = {}
+//     return function(arrays and scalars) {
+//       if (dtype and order of arrays in CACHED) {
+//         var func = CACHED[dtype and order of arrays]
+//       } else {
+//         var func = CACHED[dtype and order of arrays] = compileBound(dtype and order of arrays)
+//       }
+//       return func(arrays and scalars)
+//     }
+//   }
+//   return thunk(compile.bind1(proc))
+// }
+
+var compile = require("./compile.js")
+
+function createThunk(proc) {
+  var code = ["'use strict'", "var CACHED={}"]
+  var vars = []
+  var thunkName = proc.funcName + "_cwise_thunk"
+  
+  //Build thunk
+  code.push(["return function ", thunkName, "(", proc.shimArgs.join(","), "){"].join(""))
+  var typesig = []
+  var string_typesig = []
+  var proc_args = [["array",proc.arrayArgs[0],".shape.slice(", // Slice shape so that we only retain the shape over which we iterate (which gets passed to the cwise operator as SS).
+                    Math.max(0,proc.arrayBlockIndices[0]),proc.arrayBlockIndices[0]<0?(","+proc.arrayBlockIndices[0]+")"):")"].join("")]
+  var shapeLengthConditions = [], shapeConditions = []
+  // Process array arguments
+  for(var i=0; i<proc.arrayArgs.length; ++i) {
+    var j = proc.arrayArgs[i]
+    vars.push(["t", j, "=array", j, ".dtype,",
+               "r", j, "=array", j, ".order"].join(""))
+    typesig.push("t" + j)
+    typesig.push("r" + j)
+    string_typesig.push("t"+j)
+    string_typesig.push("r"+j+".join()")
+    proc_args.push("array" + j + ".data")
+    proc_args.push("array" + j + ".stride")
+    proc_args.push("array" + j + ".offset|0")
+    if (i>0) { // Gather conditions to check for shape equality (ignoring block indices)
+      shapeLengthConditions.push("array" + proc.arrayArgs[0] + ".shape.length===array" + j + ".shape.length+" + (Math.abs(proc.arrayBlockIndices[0])-Math.abs(proc.arrayBlockIndices[i])))
+      shapeConditions.push("array" + proc.arrayArgs[0] + ".shape[shapeIndex+" + Math.max(0,proc.arrayBlockIndices[0]) + "]===array" + j + ".shape[shapeIndex+" + Math.max(0,proc.arrayBlockIndices[i]) + "]")
+    }
+  }
+  // Check for shape equality
+  if (proc.arrayArgs.length > 1) {
+    code.push("if (!(" + shapeLengthConditions.join(" && ") + ")) throw new Error('cwise: Arrays do not all have the same dimensionality!')")
+    code.push("for(var shapeIndex=array" + proc.arrayArgs[0] + ".shape.length-" + Math.abs(proc.arrayBlockIndices[0]) + "; shapeIndex-->0;) {")
+    code.push("if (!(" + shapeConditions.join(" && ") + ")) throw new Error('cwise: Arrays do not all have the same shape!')")
+    code.push("}")
+  }
+  // Process scalar arguments
+  for(var i=0; i<proc.scalarArgs.length; ++i) {
+    proc_args.push("scalar" + proc.scalarArgs[i])
+  }
+  // Check for cached function (and if not present, generate it)
+  vars.push(["type=[", string_typesig.join(","), "].join()"].join(""))
+  vars.push("proc=CACHED[type]")
+  code.push("var " + vars.join(","))
+  
+  code.push(["if(!proc){",
+             "CACHED[type]=proc=compile([", typesig.join(","), "])}",
+             "return proc(", proc_args.join(","), ")}"].join(""))
+
+  if(proc.debug) {
+    console.log("-----Generated thunk:\n" + code.join("\n") + "\n----------")
+  }
+  
+  //Compile thunk
+  var thunk = new Function("compile", code.join("\n"))
+  return thunk(compile.bind(undefined, proc))
+}
+
+module.exports = createThunk
 
-function compileCwise(user_args) {
-  //Create procedure
-  var proc = new Procedure()
-  
-  //Parse blocks
-  proc.pre    = user_args.pre
-  proc.body   = user_args.body
-  proc.post   = user_args.post
-
-  //Parse arguments
-  var proc_args = user_args.args.slice(0)
-  proc.argTypes = proc_args
-  for(var i=0; i<proc_args.length; ++i) {
-    var arg_type = proc_args[i]
-    if(arg_type === "array" || (typeof arg_type === "object" && arg_type.blockIndices)) {
-      proc.argTypes[i] = "array"
-      proc.arrayArgs.push(i)
-      proc.arrayBlockIndices.push(arg_type.blockIndices ? arg_type.blockIndices : 0)
-      proc.shimArgs.push("array" + i)
-      if(i < proc.pre.args.length && proc.pre.args[i].count>0) {
-        throw new Error("cwise: pre() block may not reference array args")
-      }
-      if(i < proc.post.args.length && proc.post.args[i].count>0) {
-        throw new Error("cwise: post() block may not reference array args")
-      }
-    } else if(arg_type === "scalar") {
-      proc.scalarArgs.push(i)
-      proc.shimArgs.push("scalar" + i)
-    } else if(arg_type === "index") {
-      proc.indexArgs.push(i)
-      if(i < proc.pre.args.length && proc.pre.args[i].count > 0) {
-        throw new Error("cwise: pre() block may not reference array index")
-      }
-      if(i < proc.body.args.length && proc.body.args[i].lvalue) {
-        throw new Error("cwise: body() block may not write to array index")
-      }
-      if(i < proc.post.args.length && proc.post.args[i].count > 0) {
-        throw new Error("cwise: post() block may not reference array index")
-      }
-    } else if(arg_type === "shape") {
-      proc.shapeArgs.push(i)
-      if(i < proc.pre.args.length && proc.pre.args[i].lvalue) {
-        throw new Error("cwise: pre() block may not write to array shape")
-      }
-      if(i < proc.body.args.length && proc.body.args[i].lvalue) {
-        throw new Error("cwise: body() block may not write to array shape")
-      }
-      if(i < proc.post.args.length && proc.post.args[i].lvalue) {
-        throw new Error("cwise: post() block may not write to array shape")
-      }
-    } else if(typeof arg_type === "object" && arg_type.offset) {
-      proc.argTypes[i] = "offset"
-      proc.offsetArgs.push({ array: arg_type.array, offset:arg_type.offset })
-      proc.offsetArgIndex.push(i)
-    } else {
-      throw new Error("cwise: Unknown argument type " + proc_args[i])
-    }
-  }
-  
-  //Make sure at least one array argument was specified
-  if(proc.arrayArgs.length <= 0) {
-    throw new Error("cwise: No array arguments specified")
-  }
-  
-  //Make sure arguments are correct
-  if(proc.pre.args.length > proc_args.length) {
-    throw new Error("cwise: Too many arguments in pre() block")
-  }
-  if(proc.body.args.length > proc_args.length) {
-    throw new Error("cwise: Too many arguments in body() block")
-  }
-  if(proc.post.args.length > proc_args.length) {
-    throw new Error("cwise: Too many arguments in post() block")
-  }
-
-  //Check debug flag
-  proc.debug = !!user_args.printCode || !!user_args.debug
-  
-  //Retrieve name
-  proc.funcName = user_args.funcName || "cwise"
-  
-  //Read in block size
-  proc.blockSize = user_args.blockSize || 64
-
-  return createThunk(proc)
-}
-
-module.exports = compileCwise
-
-},{"./lib/thunk.js":18}],17:[function(require,module,exports){
-"use strict"
-
-var uniq = require("uniq")
-
-// This function generates very simple loops analogous to how you typically traverse arrays (the outermost loop corresponds to the slowest changing index, the innermost loop to the fastest changing index)
-// TODO: If two arrays have the same strides (and offsets) there is potential for decreasing the number of "pointers" and related variables. The drawback is that the type signature would become more specific and that there would thus be less potential for caching, but it might still be worth it, especially when dealing with large numbers of arguments.
-function innerFill(order, proc, body) {
-  var dimension = order.length
-    , nargs = proc.arrayArgs.length
-    , has_index = proc.indexArgs.length>0
-    , code = []
-    , vars = []
-    , idx=0, pidx=0, i, j
-  for(i=0; i<dimension; ++i) { // Iteration variables
-    vars.push(["i",i,"=0"].join(""))
-  }
-  //Compute scan deltas
-  for(j=0; j<nargs; ++j) {
-    for(i=0; i<dimension; ++i) {
-      pidx = idx
-      idx = order[i]
-      if(i === 0) { // The innermost/fastest dimension's delta is simply its stride
-        vars.push(["d",j,"s",i,"=t",j,"p",idx].join(""))
-      } else { // For other dimensions the delta is basically the stride minus something which essentially "rewinds" the previous (more inner) dimension
-        vars.push(["d",j,"s",i,"=(t",j,"p",idx,"-s",pidx,"*t",j,"p",pidx,")"].join(""))
-      }
-    }
-  }
-  if (vars.length > 0) {
-    code.push("var " + vars.join(","))
-  }  
-  //Scan loop
-  for(i=dimension-1; i>=0; --i) { // Start at largest stride and work your way inwards
-    idx = order[i]
-    code.push(["for(i",i,"=0;i",i,"<s",idx,";++i",i,"){"].join(""))
-  }
-  //Push body of inner loop
-  code.push(body)
-  //Advance scan pointers
-  for(i=0; i<dimension; ++i) {
-    pidx = idx
-    idx = order[i]
-    for(j=0; j<nargs; ++j) {
-      code.push(["p",j,"+=d",j,"s",i].join(""))
-    }
-    if(has_index) {
-      if(i > 0) {
-        code.push(["index[",pidx,"]-=s",pidx].join(""))
-      }
-      code.push(["++index[",idx,"]"].join(""))
-    }
-    code.push("}")
-  }
-  return code.join("\n")
-}
-
-// Generate "outer" loops that loop over blocks of data, applying "inner" loops to the blocks by manipulating the local variables in such a way that the inner loop only "sees" the current block.
-// TODO: If this is used, then the previous declaration (done by generateCwiseOp) of s* is essentially unnecessary.
-//       I believe the s* are not used elsewhere (in particular, I don't think they're used in the pre/post parts and "shape" is defined independently), so it would be possible to make defining the s* dependent on what loop method is being used.
-function outerFill(matched, order, proc, body) {
-  var dimension = order.length
-    , nargs = proc.arrayArgs.length
-    , blockSize = proc.blockSize
-    , has_index = proc.indexArgs.length > 0
-    , code = []
-  for(var i=0; i<nargs; ++i) {
-    code.push(["var offset",i,"=p",i].join(""))
-  }
-  //Generate loops for unmatched dimensions
-  // The order in which these dimensions are traversed is fairly arbitrary (from small stride to large stride, for the first argument)
-  // TODO: It would be nice if the order in which these loops are placed would also be somehow "optimal" (at the very least we should check that it really doesn't hurt us if they're not).
-  for(var i=matched; i<dimension; ++i) {
-    code.push(["for(var j"+i+"=SS[", order[i], "]|0;j", i, ">0;){"].join("")) // Iterate back to front
-    code.push(["if(j",i,"<",blockSize,"){"].join("")) // Either decrease j by blockSize (s = blockSize), or set it to zero (after setting s = j).
-    code.push(["s",order[i],"=j",i].join(""))
-    code.push(["j",i,"=0"].join(""))
-    code.push(["}else{s",order[i],"=",blockSize].join(""))
-    code.push(["j",i,"-=",blockSize,"}"].join(""))
-    if(has_index) {
-      code.push(["index[",order[i],"]=j",i].join(""))
-    }
-  }
-  for(var i=0; i<nargs; ++i) {
-    var indexStr = ["offset"+i]
-    for(var j=matched; j<dimension; ++j) {
-      indexStr.push(["j",j,"*t",i,"p",order[j]].join(""))
-    }
-    code.push(["p",i,"=(",indexStr.join("+"),")"].join(""))
-  }
-  code.push(innerFill(order, proc, body))
-  for(var i=matched; i<dimension; ++i) {
-    code.push("}")
-  }
-  return code.join("\n")
-}
-
-//Count the number of compatible inner orders
-// This is the length of the longest common prefix of the arrays in orders.
-// Each array in orders lists the dimensions of the correspond ndarray in order of increasing stride.
-// This is thus the maximum number of dimensions that can be efficiently traversed by simple nested loops for all arrays.
-function countMatches(orders) {
-  var matched = 0, dimension = orders[0].length
-  while(matched < dimension) {
-    for(var j=1; j<orders.length; ++j) {
-      if(orders[j][matched] !== orders[0][matched]) {
-        return matched
-      }
-    }
-    ++matched
-  }
-  return matched
-}
-
-//Processes a block according to the given data types
-// Replaces variable names by different ones, either "local" ones (that are then ferried in and out of the given array) or ones matching the arguments that the function performing the ultimate loop will accept.
-function processBlock(block, proc, dtypes) {
-  var code = block.body
-  var pre = []
-  var post = []
-  for(var i=0; i<block.args.length; ++i) {
-    var carg = block.args[i]
-    if(carg.count <= 0) {
-      continue
-    }
-    var re = new RegExp(carg.name, "g")
-    var ptrStr = ""
-    var arrNum = proc.arrayArgs.indexOf(i)
-    switch(proc.argTypes[i]) {
-      case "offset":
-        var offArgIndex = proc.offsetArgIndex.indexOf(i)
-        var offArg = proc.offsetArgs[offArgIndex]
-        arrNum = offArg.array
-        ptrStr = "+q" + offArgIndex // Adds offset to the "pointer" in the array
-      case "array":
-        ptrStr = "p" + arrNum + ptrStr
-        var localStr = "l" + i
-        var arrStr = "a" + arrNum
-        if (proc.arrayBlockIndices[arrNum] === 0) { // Argument to body is just a single value from this array
-          if(carg.count === 1) { // Argument/array used only once(?)
-            if(dtypes[arrNum] === "generic") {
-              if(carg.lvalue) {
-                pre.push(["var ", localStr, "=", arrStr, ".get(", ptrStr, ")"].join("")) // Is this necessary if the argument is ONLY used as an lvalue? (keep in mind that we can have a += something, so we would actually need to check carg.rvalue)
-                code = code.replace(re, localStr)
-                post.push([arrStr, ".set(", ptrStr, ",", localStr,")"].join(""))
-              } else {
-                code = code.replace(re, [arrStr, ".get(", ptrStr, ")"].join(""))
-              }
-            } else {
-              code = code.replace(re, [arrStr, "[", ptrStr, "]"].join(""))
-            }
-          } else if(dtypes[arrNum] === "generic") {
-            pre.push(["var ", localStr, "=", arrStr, ".get(", ptrStr, ")"].join("")) // TODO: Could we optimize by checking for carg.rvalue?
-            code = code.replace(re, localStr)
-            if(carg.lvalue) {
-              post.push([arrStr, ".set(", ptrStr, ",", localStr,")"].join(""))
-            }
-          } else {
-            pre.push(["var ", localStr, "=", arrStr, "[", ptrStr, "]"].join("")) // TODO: Could we optimize by checking for carg.rvalue?
-            code = code.replace(re, localStr)
-            if(carg.lvalue) {
-              post.push([arrStr, "[", ptrStr, "]=", localStr].join(""))
-            }
-          }
-        } else { // Argument to body is a "block"
-          var reStrArr = [carg.name], ptrStrArr = [ptrStr]
-          for(var j=0; j<Math.abs(proc.arrayBlockIndices[arrNum]); j++) {
-            reStrArr.push("\\s*\\[([^\\]]+)\\]")
-            ptrStrArr.push("$" + (j+1) + "*t" + arrNum + "b" + j) // Matched index times stride
-          }
-          re = new RegExp(reStrArr.join(""), "g")
-          ptrStr = ptrStrArr.join("+")
-          if(dtypes[arrNum] === "generic") {
-            /*if(carg.lvalue) {
-              pre.push(["var ", localStr, "=", arrStr, ".get(", ptrStr, ")"].join("")) // Is this necessary if the argument is ONLY used as an lvalue? (keep in mind that we can have a += something, so we would actually need to check carg.rvalue)
-              code = code.replace(re, localStr)
-              post.push([arrStr, ".set(", ptrStr, ",", localStr,")"].join(""))
-            } else {
-              code = code.replace(re, [arrStr, ".get(", ptrStr, ")"].join(""))
-            }*/
-            throw new Error("cwise: Generic arrays not supported in combination with blocks!")
-          } else {
-            // This does not produce any local variables, even if variables are used multiple times. It would be possible to do so, but it would complicate things quite a bit.
-            code = code.replace(re, [arrStr, "[", ptrStr, "]"].join(""))
-          }
-        }
-      break
-      case "scalar":
-        code = code.replace(re, "Y" + proc.scalarArgs.indexOf(i))
-      break
-      case "index":
-        code = code.replace(re, "index")
-      break
-      case "shape":
-        code = code.replace(re, "shape")
-      break
-    }
-  }
-  return [pre.join("\n"), code, post.join("\n")].join("\n").trim()
-}
-
-function typeSummary(dtypes) {
-  var summary = new Array(dtypes.length)
-  var allEqual = true
-  for(var i=0; i<dtypes.length; ++i) {
-    var t = dtypes[i]
-    var digits = t.match(/\d+/)
-    if(!digits) {
-      digits = ""
-    } else {
-      digits = digits[0]
-    }
-    if(t.charAt(0) === 0) {
-      summary[i] = "u" + t.charAt(1) + digits
-    } else {
-      summary[i] = t.charAt(0) + digits
-    }
-    if(i > 0) {
-      allEqual = allEqual && summary[i] === summary[i-1]
-    }
-  }
-  if(allEqual) {
-    return summary[0]
-  }
-  return summary.join("")
-}
-
-//Generates a cwise operator
-function generateCWiseOp(proc, typesig) {
-
-  //Compute dimension
-  // Arrays get put first in typesig, and there are two entries per array (dtype and order), so this gets the number of dimensions in the first array arg.
-  var dimension = (typesig[1].length - Math.abs(proc.arrayBlockIndices[0]))|0
-  var orders = new Array(proc.arrayArgs.length)
-  var dtypes = new Array(proc.arrayArgs.length)
-  for(var i=0; i<proc.arrayArgs.length; ++i) {
-    dtypes[i] = typesig[2*i]
-    orders[i] = typesig[2*i+1]
-  }
-  
-  //Determine where block and loop indices start and end
-  var blockBegin = [], blockEnd = [] // These indices are exposed as blocks
-  var loopBegin = [], loopEnd = [] // These indices are iterated over
-  var loopOrders = [] // orders restricted to the loop indices
-  for(var i=0; i<proc.arrayArgs.length; ++i) {
-    if (proc.arrayBlockIndices[i]<0) {
-      loopBegin.push(0)
-      loopEnd.push(dimension)
-      blockBegin.push(dimension)
-      blockEnd.push(dimension+proc.arrayBlockIndices[i])
-    } else {
-      loopBegin.push(proc.arrayBlockIndices[i]) // Non-negative
-      loopEnd.push(proc.arrayBlockIndices[i]+dimension)
-      blockBegin.push(0)
-      blockEnd.push(proc.arrayBlockIndices[i])
-    }
-    var newOrder = []
-    for(var j=0; j<orders[i].length; j++) {
-      if (loopBegin[i]<=orders[i][j] && orders[i][j]<loopEnd[i]) {
-        newOrder.push(orders[i][j]-loopBegin[i]) // If this is a loop index, put it in newOrder, subtracting loopBegin, to make sure that all loopOrders are using a common set of indices.
-      }
-    }
-    loopOrders.push(newOrder)
-  }
-
-  //First create arguments for procedure
-  var arglist = ["SS"] // SS is the overall shape over which we iterate
-  var code = ["'use strict'"]
-  var vars = []
-  
-  for(var j=0; j<dimension; ++j) {
-    vars.push(["s", j, "=SS[", j, "]"].join("")) // The limits for each dimension.
-  }
-  for(var i=0; i<proc.arrayArgs.length; ++i) {
-    arglist.push("a"+i) // Actual data array
-    arglist.push("t"+i) // Strides
-    arglist.push("p"+i) // Offset in the array at which the data starts (also used for iterating over the data)
-    
-    for(var j=0; j<dimension; ++j) { // Unpack the strides into vars for looping
-      vars.push(["t",i,"p",j,"=t",i,"[",loopBegin[i]+j,"]"].join(""))
-    }
-    
-    for(var j=0; j<Math.abs(proc.arrayBlockIndices[i]); ++j) { // Unpack the strides into vars for block iteration
-      vars.push(["t",i,"b",j,"=t",i,"[",blockBegin[i]+j,"]"].join(""))
-    }
-  }
-  for(var i=0; i<proc.scalarArgs.length; ++i) {
-    arglist.push("Y" + i)
-  }
-  if(proc.shapeArgs.length > 0) {
-    vars.push("shape=SS.slice(0)") // Makes the shape over which we iterate available to the user defined functions (so you can use width/height for example)
-  }
-  if(proc.indexArgs.length > 0) {
-    // Prepare an array to keep track of the (logical) indices, initialized to dimension zeroes.
-    var zeros = new Array(dimension)
-    for(var i=0; i<dimension; ++i) {
-      zeros[i] = "0"
-    }
-    vars.push(["index=[", zeros.join(","), "]"].join(""))
-  }
-  for(var i=0; i<proc.offsetArgs.length; ++i) { // Offset arguments used for stencil operations
-    var off_arg = proc.offsetArgs[i]
-    var init_string = []
-    for(var j=0; j<off_arg.offset.length; ++j) {
-      if(off_arg.offset[j] === 0) {
-        continue
-      } else if(off_arg.offset[j] === 1) {
-        init_string.push(["t", off_arg.array, "p", j].join(""))      
-      } else {
-        init_string.push([off_arg.offset[j], "*t", off_arg.array, "p", j].join(""))
-      }
-    }
-    if(init_string.length === 0) {
-      vars.push("q" + i + "=0")
-    } else {
-      vars.push(["q", i, "=", init_string.join("+")].join(""))
-    }
-  }
-
-  //Prepare this variables
-  var thisVars = uniq([].concat(proc.pre.thisVars)
-                      .concat(proc.body.thisVars)
-                      .concat(proc.post.thisVars))
-  vars = vars.concat(thisVars)
-  if (vars.length > 0) {
-    code.push("var " + vars.join(","))
-  }
-  for(var i=0; i<proc.arrayArgs.length; ++i) {
-    code.push("p"+i+"|=0")
-  }
-  
-  //Inline prelude
-  if(proc.pre.body.length > 3) {
-    code.push(processBlock(proc.pre, proc, dtypes))
-  }
-
-  //Process body
-  var body = processBlock(proc.body, proc, dtypes)
-  var matched = countMatches(loopOrders)
-  if(matched < dimension) {
-    code.push(outerFill(matched, loopOrders[0], proc, body)) // TODO: Rather than passing loopOrders[0], it might be interesting to look at passing an order that represents the majority of the arguments for example.
-  } else {
-    code.push(innerFill(loopOrders[0], proc, body))
-  }
-
-  //Inline epilog
-  if(proc.post.body.length > 3) {
-    code.push(processBlock(proc.post, proc, dtypes))
-  }
-  
-  if(proc.debug) {
-    console.log("-----Generated cwise routine for ", typesig, ":\n" + code.join("\n") + "\n----------")
-  }
-  
-  var loopName = [(proc.funcName||"unnamed"), "_cwise_loop_", orders[0].join("s"),"m",matched,typeSummary(dtypes)].join("")
-  var f = new Function(["function ",loopName,"(", arglist.join(","),"){", code.join("\n"),"} return ", loopName].join(""))
-  return f()
-}
-module.exports = generateCWiseOp
-
-},{"uniq":114}],18:[function(require,module,exports){
-"use strict"
-
-// The function below is called when constructing a cwise function object, and does the following:
-// A function object is constructed which accepts as argument a compilation function and returns another function.
-// It is this other function that is eventually returned by createThunk, and this function is the one that actually
-// checks whether a certain pattern of arguments has already been used before and compiles new loops as needed.
-// The compilation passed to the first function object is used for compiling new functions.
-// Once this function object is created, it is called with compile as argument, where the first argument of compile
-// is bound to "proc" (essentially containing a preprocessed version of the user arguments to cwise).
-// So createThunk roughly works like this:
-// function createThunk(proc) {
-//   var thunk = function(compileBound) {
-//     var CACHED = {}
-//     return function(arrays and scalars) {
-//       if (dtype and order of arrays in CACHED) {
-//         var func = CACHED[dtype and order of arrays]
-//       } else {
-//         var func = CACHED[dtype and order of arrays] = compileBound(dtype and order of arrays)
-//       }
-//       return func(arrays and scalars)
-//     }
-//   }
-//   return thunk(compile.bind1(proc))
-// }
-
-var compile = require("./compile.js")
-
-function createThunk(proc) {
-  var code = ["'use strict'", "var CACHED={}"]
-  var vars = []
-  var thunkName = proc.funcName + "_cwise_thunk"
-  
-  //Build thunk
-  code.push(["return function ", thunkName, "(", proc.shimArgs.join(","), "){"].join(""))
-  var typesig = []
-  var string_typesig = []
-  var proc_args = [["array",proc.arrayArgs[0],".shape.slice(", // Slice shape so that we only retain the shape over which we iterate (which gets passed to the cwise operator as SS).
-                    Math.max(0,proc.arrayBlockIndices[0]),proc.arrayBlockIndices[0]<0?(","+proc.arrayBlockIndices[0]+")"):")"].join("")]
-  var shapeLengthConditions = [], shapeConditions = []
-  // Process array arguments
-  for(var i=0; i<proc.arrayArgs.length; ++i) {
-    var j = proc.arrayArgs[i]
-    vars.push(["t", j, "=array", j, ".dtype,",
-               "r", j, "=array", j, ".order"].join(""))
-    typesig.push("t" + j)
-    typesig.push("r" + j)
-    string_typesig.push("t"+j)
-    string_typesig.push("r"+j+".join()")
-    proc_args.push("array" + j + ".data")
-    proc_args.push("array" + j + ".stride")
-    proc_args.push("array" + j + ".offset|0")
-    if (i>0) { // Gather conditions to check for shape equality (ignoring block indices)
-      shapeLengthConditions.push("array" + proc.arrayArgs[0] + ".shape.length===array" + j + ".shape.length+" + (Math.abs(proc.arrayBlockIndices[0])-Math.abs(proc.arrayBlockIndices[i])))
-      shapeConditions.push("array" + proc.arrayArgs[0] + ".shape[shapeIndex+" + Math.max(0,proc.arrayBlockIndices[0]) + "]===array" + j + ".shape[shapeIndex+" + Math.max(0,proc.arrayBlockIndices[i]) + "]")
-    }
-  }
-  // Check for shape equality
-  if (proc.arrayArgs.length > 1) {
-    code.push("if (!(" + shapeLengthConditions.join(" && ") + ")) throw new Error('cwise: Arrays do not all have the same dimensionality!')")
-    code.push("for(var shapeIndex=array" + proc.arrayArgs[0] + ".shape.length-" + Math.abs(proc.arrayBlockIndices[0]) + "; shapeIndex-->0;) {")
-    code.push("if (!(" + shapeConditions.join(" && ") + ")) throw new Error('cwise: Arrays do not all have the same shape!')")
-    code.push("}")
-  }
-  // Process scalar arguments
-  for(var i=0; i<proc.scalarArgs.length; ++i) {
-    proc_args.push("scalar" + proc.scalarArgs[i])
-  }
-  // Check for cached function (and if not present, generate it)
-  vars.push(["type=[", string_typesig.join(","), "].join()"].join(""))
-  vars.push("proc=CACHED[type]")
-  code.push("var " + vars.join(","))
-  
-  code.push(["if(!proc){",
-             "CACHED[type]=proc=compile([", typesig.join(","), "])}",
-             "return proc(", proc_args.join(","), ")}"].join(""))
-
-  if(proc.debug) {
-    console.log("-----Generated thunk:\n" + code.join("\n") + "\n----------")
-  }
-  
-  //Compile thunk
-  var thunk = new Function("compile", code.join("\n"))
-  return thunk(compile.bind(undefined, proc))
-}
-
-module.exports = createThunk
-
-},{"./compile.js":17}],19:[function(require,module,exports){
+},{"./compile.js":21}],23:[function(require,module,exports){
 (function (Buffer){
 'use strict';
 
@@ -5447,7 +6002,7 @@ function dataUriToBuffer (uri) {
 }
 
 }).call(this,require("buffer").Buffer)
-},{"buffer":5}],20:[function(require,module,exports){
+},{"buffer":7}],24:[function(require,module,exports){
 // Copyright Joyent, Inc. and other Node contributors.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
@@ -5751,7 +6306,7 @@ function isUndefined(arg) {
   return arg === void 0;
 }
 
-},{}],21:[function(require,module,exports){
+},{}],25:[function(require,module,exports){
 var FisheyeGl = function FisheyeGl(options){
 
   // Defaults:
@@ -6059,7 +6614,7 @@ if (typeof(document) != 'undefined')
 else
   module.exports = FisheyeGl;
 
-},{"./shaders":22}],22:[function(require,module,exports){
+},{"./shaders":26}],26:[function(require,module,exports){
 module.exports = {
   fragment: require('./shaders/fragment.glfs'),
   fragment2: require('./shaders/fragment2.glfs'),
@@ -6069,7 +6624,7 @@ module.exports = {
   vertex: require('./shaders/vertex.glvs')
 };
 
-},{"./shaders/fragment.glfs":23,"./shaders/fragment2.glfs":24,"./shaders/fragment3.glfs":25,"./shaders/method1.glfs":26,"./shaders/method2.glfs":27,"./shaders/vertex.glvs":28}],23:[function(require,module,exports){
+},{"./shaders/fragment.glfs":27,"./shaders/fragment2.glfs":28,"./shaders/fragment3.glfs":29,"./shaders/method1.glfs":30,"./shaders/method2.glfs":31,"./shaders/vertex.glvs":32}],27:[function(require,module,exports){
 module.exports = "\
 #ifdef GL_ES\n\
 precision highp float;\n\
@@ -6097,7 +6652,7 @@ void main(void){\n\
 	gl_FragColor = texture;\n\
 }\n\
 ";
-},{}],24:[function(require,module,exports){
+},{}],28:[function(require,module,exports){
 module.exports = "\
 #ifdef GL_ES\n\
 precision highp float;\n\
@@ -6130,7 +6685,7 @@ void main(void){\n\
 	gl_FragColor = texture;\n\
 }\n\
 ";
-},{}],25:[function(require,module,exports){
+},{}],29:[function(require,module,exports){
 module.exports = "\
 #ifdef GL_ES\n\
 precision highp float;\n\
@@ -6161,7 +6716,7 @@ void main(void){\n\
 	gl_FragColor = texture;\n\
 }\n\
 ";
-},{}],26:[function(require,module,exports){
+},{}],30:[function(require,module,exports){
 module.exports = "\
 #ifdef GL_ES\n\
 precision highp float;\n\
@@ -6193,7 +6748,7 @@ void main(void){\n\
 	gl_FragColor = texture;\n\
 }\n\
 ";
-},{}],27:[function(require,module,exports){
+},{}],31:[function(require,module,exports){
 module.exports = "\
 #ifdef GL_ES\n\
 precision highp float;\n\
@@ -6225,7 +6780,7 @@ void main(void){\n\
 	gl_FragColor = texture;\n\
 }\n\
 ";
-},{}],28:[function(require,module,exports){
+},{}],32:[function(require,module,exports){
 module.exports = "\
 #ifdef GL_ES\n\
 precision highp float;\n\
@@ -6240,7 +6795,7 @@ void main(void){\n\
 	gl_Position = vec4(vPosition,1.0);\n\
 }\n\
 ";
-},{}],29:[function(require,module,exports){
+},{}],33:[function(require,module,exports){
 (function (Buffer,process){
 'use strict'
 
@@ -6378,7 +6933,7 @@ module.exports = function getPixels(url, type, cb) {
   }
 }
 }).call(this,{"isBuffer":require("../is-buffer/index.js")},require('_process'))
-},{"../is-buffer/index.js":47,"_process":92,"data-uri-to-buffer":30,"ndarray":56,"ndarray-pack":54,"omggif":57,"path":69,"through":113}],30:[function(require,module,exports){
+},{"../is-buffer/index.js":49,"_process":94,"data-uri-to-buffer":34,"ndarray":58,"ndarray-pack":56,"omggif":59,"path":71,"through":113}],34:[function(require,module,exports){
 (function (Buffer){
 
 /**
@@ -6436,7 +6991,7 @@ function dataUriToBuffer (uri) {
 }
 
 }).call(this,require("buffer").Buffer)
-},{"buffer":5}],31:[function(require,module,exports){
+},{"buffer":7}],35:[function(require,module,exports){
 (function (Buffer){
 /*
   GIFEncoder.js
@@ -6909,7 +7464,7 @@ GIFEncoder.ByteCapacitor = ByteCapacitor;
 module.exports = GIFEncoder;
 
 }).call(this,require("buffer").Buffer)
-},{"./LZWEncoder.js":32,"./TypedNeuQuant.js":33,"assert":42,"buffer":5,"events":20,"readable-stream":40,"util":119}],32:[function(require,module,exports){
+},{"./LZWEncoder.js":36,"./TypedNeuQuant.js":37,"assert":1,"buffer":7,"events":24,"readable-stream":44,"util":119}],36:[function(require,module,exports){
 /*
   LZWEncoder.js
 
@@ -7123,7 +7678,7 @@ function LZWEncoder(width, height, pixels, colorDepth) {
 
 module.exports = LZWEncoder;
 
-},{}],33:[function(require,module,exports){
+},{}],37:[function(require,module,exports){
 /* NeuQuant Neural-Net Quantization Algorithm
  * ------------------------------------------
  *
@@ -7556,13 +8111,13 @@ function NeuQuant(pixels, samplefac) {
 
 module.exports = NeuQuant;
 
-},{}],34:[function(require,module,exports){
-arguments[4][7][0].apply(exports,arguments)
-},{"dup":7}],35:[function(require,module,exports){
-arguments[4][8][0].apply(exports,arguments)
-},{"./_stream_readable":37,"./_stream_writable":39,"_process":92,"core-util-is":15,"dup":8,"inherits":45}],36:[function(require,module,exports){
-arguments[4][9][0].apply(exports,arguments)
-},{"./_stream_transform":38,"core-util-is":15,"dup":9,"inherits":45}],37:[function(require,module,exports){
+},{}],38:[function(require,module,exports){
+arguments[4][11][0].apply(exports,arguments)
+},{"dup":11}],39:[function(require,module,exports){
+arguments[4][12][0].apply(exports,arguments)
+},{"./_stream_readable":41,"./_stream_writable":43,"_process":94,"core-util-is":19,"dup":12,"inherits":47}],40:[function(require,module,exports){
+arguments[4][13][0].apply(exports,arguments)
+},{"./_stream_transform":42,"core-util-is":19,"dup":13,"inherits":47}],41:[function(require,module,exports){
 (function (process){
 // Copyright Joyent, Inc. and other Node contributors.
 //
@@ -8517,7 +9072,7 @@ function indexOf (xs, x) {
 }
 
 }).call(this,require('_process'))
-},{"./_stream_duplex":35,"_process":92,"buffer":5,"core-util-is":15,"events":20,"inherits":45,"isarray":34,"stream":111,"string_decoder/":41,"util":2}],38:[function(require,module,exports){
+},{"./_stream_duplex":39,"_process":94,"buffer":7,"core-util-is":19,"events":24,"inherits":47,"isarray":38,"stream":111,"string_decoder/":45,"util":3}],42:[function(require,module,exports){
 // Copyright Joyent, Inc. and other Node contributors.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
@@ -8728,7 +9283,7 @@ function done(stream, er) {
   return stream.push(null);
 }
 
-},{"./_stream_duplex":35,"core-util-is":15,"inherits":45}],39:[function(require,module,exports){
+},{"./_stream_duplex":39,"core-util-is":19,"inherits":47}],43:[function(require,module,exports){
 (function (process){
 // Copyright Joyent, Inc. and other Node contributors.
 //
@@ -9209,7 +9764,7 @@ function endWritable(stream, state, cb) {
 }
 
 }).call(this,require('_process'))
-},{"./_stream_duplex":35,"_process":92,"buffer":5,"core-util-is":15,"inherits":45,"stream":111}],40:[function(require,module,exports){
+},{"./_stream_duplex":39,"_process":94,"buffer":7,"core-util-is":19,"inherits":47,"stream":111}],44:[function(require,module,exports){
 (function (process){
 exports = module.exports = require('./lib/_stream_readable.js');
 exports.Stream = require('stream');
@@ -9223,505 +9778,9 @@ if (!process.browser && process.env.READABLE_STREAM === 'disable') {
 }
 
 }).call(this,require('_process'))
-},{"./lib/_stream_duplex.js":35,"./lib/_stream_passthrough.js":36,"./lib/_stream_readable.js":37,"./lib/_stream_transform.js":38,"./lib/_stream_writable.js":39,"_process":92,"stream":111}],41:[function(require,module,exports){
-arguments[4][14][0].apply(exports,arguments)
-},{"buffer":5,"dup":14}],42:[function(require,module,exports){
-(function (global){
-'use strict';
-
-// 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 = require('util/');
-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;
-};
-
-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{"util/":119}],43:[function(require,module,exports){
-arguments[4][2][0].apply(exports,arguments)
-},{"dup":2}],44:[function(require,module,exports){
+},{"./lib/_stream_duplex.js":39,"./lib/_stream_passthrough.js":40,"./lib/_stream_readable.js":41,"./lib/_stream_transform.js":42,"./lib/_stream_writable.js":43,"_process":94,"stream":111}],45:[function(require,module,exports){
+arguments[4][18][0].apply(exports,arguments)
+},{"buffer":7,"dup":18}],46:[function(require,module,exports){
 exports.read = function (buffer, offset, isLE, mLen, nBytes) {
   var e, m
   var eLen = nBytes * 8 - mLen - 1
@@ -9807,7 +9866,7 @@ exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
   buffer[offset + i - d] |= s * 128
 }
 
-},{}],45:[function(require,module,exports){
+},{}],47:[function(require,module,exports){
 if (typeof Object.create === 'function') {
   // implementation from standard node.js 'util' module
   module.exports = function inherits(ctor, superCtor) {
@@ -9832,7 +9891,7 @@ if (typeof Object.create === 'function') {
   }
 }
 
-},{}],46:[function(require,module,exports){
+},{}],48:[function(require,module,exports){
 "use strict"
 
 function iota(n) {
@@ -9844,7 +9903,7 @@ function iota(n) {
 }
 
 module.exports = iota
-},{}],47:[function(require,module,exports){
+},{}],49:[function(require,module,exports){
 /*!
  * Determine if an object is a Buffer
  *
@@ -9867,14 +9926,9 @@ function isSlowBuffer (obj) {
   return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
 }
 
-},{}],48:[function(require,module,exports){
-var toString = {}.toString;
-
-module.exports = Array.isArray || function (arr) {
-  return toString.call(arr) == '[object Array]';
-};
-
-},{}],49:[function(require,module,exports){
+},{}],50:[function(require,module,exports){
+arguments[4][8][0].apply(exports,arguments)
+},{"dup":8}],51:[function(require,module,exports){
 /*!
  * jQuery JavaScript Library v2.2.4
  * http://jquery.com/
@@ -19690,7 +19744,7 @@ if ( !noGlobal ) {
 return jQuery;
 }));
 
-},{}],50:[function(require,module,exports){
+},{}],52:[function(require,module,exports){
 (function webpackUniversalModuleDefinition(root, factory) {
 	if(typeof exports === 'object' && typeof module === 'object')
 		module.exports = factory();
@@ -22416,7 +22470,7 @@ return /******/ (function(modules) { // webpackBootstrap
 /******/ ])
 });
 ;
-},{}],51:[function(require,module,exports){
+},{}],53:[function(require,module,exports){
 (function (process){
 var path = require('path');
 var fs = require('fs');
@@ -22442,9 +22496,9 @@ Mime.prototype.define = function (map) {
   for (var type in map) {
     var exts = map[type];
     for (var i = 0; i < exts.length; i++) {
-      if (process.env.DEBUG_MIME && this.types[exts[i]]) {
-        console.warn((this._loading || "define()").replace(/.*\//, ''), 'changes "' + exts[i] + '" extension type from ' +
-          this.types[exts[i]] + ' to ' + type);
+      if (process.env.DEBUG_MIME && this.types[exts]) {
+        console.warn(this._loading.replace(/.*\//, ''), 'changes "' + exts[i] + '" extension type from ' +
+          this.types[exts] + ' to ' + type);
       }
 
       this.types[exts[i]] = type;
@@ -22521,17 +22575,17 @@ mime.Mime = Mime;
 mime.charsets = {
   lookup: function(mimeType, fallback) {
     // Assume text types are utf8
-    return (/^text\/|^application\/(javascript|json)/).test(mimeType) ? 'UTF-8' : fallback;
+    return (/^text\//).test(mimeType) ? 'UTF-8' : fallback;
   }
 };
 
 module.exports = mime;
 
 }).call(this,require('_process'))
-},{"./types.json":52,"_process":92,"fs":43,"path":69}],52:[function(require,module,exports){
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-},{}],53:[function(require,module,exports){
+},{}],55:[function(require,module,exports){
 "use strict"
 
 var compile = require("cwise-compiler")
@@ -22994,7 +23048,7 @@ exports.equals = compile({
 
 
 
-},{"cwise-compiler":16}],54:[function(require,module,exports){
+},{"cwise-compiler":20}],56:[function(require,module,exports){
 "use strict"
 
 var ndarray = require("ndarray")
@@ -23017,10 +23071,10 @@ module.exports = function convert(arr, result) {
   return result
 }
 
-},{"./doConvert.js":55,"ndarray":56}],55:[function(require,module,exports){
+},{"./doConvert.js":57,"ndarray":58}],57:[function(require,module,exports){
 module.exports=require('cwise-compiler')({"args":["array","scalar","index"],"pre":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"body":{"body":"{\nvar _inline_1_v=_inline_1_arg1_,_inline_1_i\nfor(_inline_1_i=0;_inline_1_i<_inline_1_arg2_.length-1;++_inline_1_i) {\n_inline_1_v=_inline_1_v[_inline_1_arg2_[_inline_1_i]]\n}\n_inline_1_arg0_=_inline_1_v[_inline_1_arg2_[_inline_1_arg2_.length-1]]\n}","args":[{"name":"_inline_1_arg0_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_1_arg1_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_1_arg2_","lvalue":false,"rvalue":true,"count":4}],"thisVars":[],"localVars":["_inline_1_i","_inline_1_v"]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"funcName":"convert","blockSize":64})
 
-},{"cwise-compiler":16}],56:[function(require,module,exports){
+},{"cwise-compiler":20}],58:[function(require,module,exports){
 var iota = require("iota-array")
 var isBuffer = require("is-buffer")
 
@@ -23365,7 +23419,7 @@ function wrappedNDArrayCtor(data, shape, stride, offset) {
 
 module.exports = wrappedNDArrayCtor
 
-},{"iota-array":46,"is-buffer":47}],57:[function(require,module,exports){
+},{"iota-array":48,"is-buffer":49}],59:[function(require,module,exports){
 // (c) Dean McNamee <dean@gmail.com>, 2013.
 //
 // https://github.com/deanm/omggif
@@ -24149,7 +24203,7 @@ function GifReaderLZWOutputIndexStream(code_stream, p, output, output_length) {
 
 try { exports.GifWriter = GifWriter; exports.GifReader = GifReader } catch(e) { }  // CommonJS.
 
-},{}],58:[function(require,module,exports){
+},{}],60:[function(require,module,exports){
 'use strict';
 
 
@@ -24253,7 +24307,7 @@ exports.setTyped = function (on) {
 
 exports.setTyped(TYPED_OK);
 
-},{}],59:[function(require,module,exports){
+},{}],61:[function(require,module,exports){
 'use strict';
 
 // Note: adler32 takes 12% for level 0 and 2% for level 6.
@@ -24287,7 +24341,7 @@ function adler32(adler, buf, len, pos) {
 
 module.exports = adler32;
 
-},{}],60:[function(require,module,exports){
+},{}],62:[function(require,module,exports){
 'use strict';
 
 
@@ -24339,7 +24393,7 @@ module.exports = {
   //Z_NULL:                 null // Use -1 or null inline, depending on var type
 };
 
-},{}],61:[function(require,module,exports){
+},{}],63:[function(require,module,exports){
 'use strict';
 
 // Note: we can't get significant speed boost here.
@@ -24382,7 +24436,7 @@ function crc32(crc, buf, len, pos) {
 
 module.exports = crc32;
 
-},{}],62:[function(require,module,exports){
+},{}],64:[function(require,module,exports){
 'use strict';
 
 var utils   = require('../utils/common');
@@ -26239,7 +26293,7 @@ exports.deflatePrime = deflatePrime;
 exports.deflateTune = deflateTune;
 */
 
-},{"../utils/common":58,"./adler32":59,"./crc32":61,"./messages":66,"./trees":67}],63:[function(require,module,exports){
+},{"../utils/common":60,"./adler32":61,"./crc32":63,"./messages":68,"./trees":69}],65:[function(require,module,exports){
 'use strict';
 
 // See state defs from inflate.js
@@ -26567,7 +26621,7 @@ module.exports = function inflate_fast(strm, start) {
   return;
 };
 
-},{}],64:[function(require,module,exports){
+},{}],66:[function(require,module,exports){
 'use strict';
 
 
@@ -28107,7 +28161,7 @@ exports.inflateSyncPoint = inflateSyncPoint;
 exports.inflateUndermine = inflateUndermine;
 */
 
-},{"../utils/common":58,"./adler32":59,"./crc32":61,"./inffast":63,"./inftrees":65}],65:[function(require,module,exports){
+},{"../utils/common":60,"./adler32":61,"./crc32":63,"./inffast":65,"./inftrees":67}],67:[function(require,module,exports){
 'use strict';
 
 
@@ -28436,7 +28490,7 @@ module.exports = function inflate_table(type, lens, lens_index, codes, table, ta
   return 0;
 };
 
-},{"../utils/common":58}],66:[function(require,module,exports){
+},{"../utils/common":60}],68:[function(require,module,exports){
 'use strict';
 
 module.exports = {
@@ -28451,7 +28505,7 @@ module.exports = {
   '-6':   'incompatible version' /* Z_VERSION_ERROR (-6) */
 };
 
-},{}],67:[function(require,module,exports){
+},{}],69:[function(require,module,exports){
 'use strict';
 
 
@@ -29655,7 +29709,7 @@ exports._tr_flush_block  = _tr_flush_block;
 exports._tr_tally = _tr_tally;
 exports._tr_align = _tr_align;
 
-},{"../utils/common":58}],68:[function(require,module,exports){
+},{"../utils/common":60}],70:[function(require,module,exports){
 'use strict';
 
 
@@ -29686,7 +29740,7 @@ function ZStream() {
 
 module.exports = ZStream;
 
-},{}],69:[function(require,module,exports){
+},{}],71:[function(require,module,exports){
 (function (process){
 // Copyright Joyent, Inc. and other Node contributors.
 //
@@ -29914,7 +29968,7 @@ var substr = 'ab'.substr(-1) === 'b'
 ;
 
 }).call(this,require('_process'))
-},{"_process":92}],70:[function(require,module,exports){
+},{"_process":94}],72:[function(require,module,exports){
 (function (Buffer){
 'use strict';
 
@@ -30110,7 +30164,7 @@ exports.dataToBitMap = function(data, bitmapInfo) {
 };
 
 }).call(this,require("buffer").Buffer)
-},{"./interlace":80,"buffer":5}],71:[function(require,module,exports){
+},{"./interlace":82,"buffer":7}],73:[function(require,module,exports){
 (function (Buffer){
 'use strict';
 
@@ -30178,7 +30232,7 @@ module.exports = function(data, width, height, options) {
 };
 
 }).call(this,require("buffer").Buffer)
-},{"./constants":73,"buffer":5}],72:[function(require,module,exports){
+},{"./constants":75,"buffer":7}],74:[function(require,module,exports){
 (function (process,Buffer){
 'use strict';
 
@@ -30391,7 +30445,7 @@ ChunkStream.prototype._process = function() {
 };
 
 }).call(this,require('_process'),require("buffer").Buffer)
-},{"_process":92,"buffer":5,"stream":111,"util":119}],73:[function(require,module,exports){
+},{"_process":94,"buffer":7,"stream":111,"util":119}],75:[function(require,module,exports){
 'use strict';
 
 
@@ -30427,7 +30481,7 @@ module.exports = {
   GAMMA_DIVISION: 100000
 };
 
-},{}],74:[function(require,module,exports){
+},{}],76:[function(require,module,exports){
 'use strict';
 
 var crcTable = [];
@@ -30473,7 +30527,7 @@ CrcCalculator.crc32 = function(buf) {
   return crc ^ -1;
 };
 
-},{}],75:[function(require,module,exports){
+},{}],77:[function(require,module,exports){
 (function (Buffer){
 'use strict';
 
@@ -30660,7 +30714,7 @@ module.exports = function(pxData, width, height, options, bpp) {
 };
 
 }).call(this,require("buffer").Buffer)
-},{"./paeth-predictor":84,"buffer":5}],76:[function(require,module,exports){
+},{"./paeth-predictor":86,"buffer":7}],78:[function(require,module,exports){
 (function (Buffer){
 'use strict';
 
@@ -30689,7 +30743,7 @@ var FilterAsync = module.exports = function(bitmapInfo) {
 util.inherits(FilterAsync, ChunkStream);
 
 }).call(this,require("buffer").Buffer)
-},{"./chunkstream":72,"./filter-parse":78,"buffer":5,"util":119}],77:[function(require,module,exports){
+},{"./chunkstream":74,"./filter-parse":80,"buffer":7,"util":119}],79:[function(require,module,exports){
 (function (Buffer){
 'use strict';
 
@@ -30716,7 +30770,7 @@ exports.process = function(inBuffer, bitmapInfo) {
   return Buffer.concat(outBuffers);
 };
 }).call(this,require("buffer").Buffer)
-},{"./filter-parse":78,"./sync-reader":90,"buffer":5}],78:[function(require,module,exports){
+},{"./filter-parse":80,"./sync-reader":92,"buffer":7}],80:[function(require,module,exports){
 (function (Buffer){
 'use strict';
 
@@ -30891,7 +30945,7 @@ Filter.prototype._reverseFilterLine = function(rawData) {
 };
 
 }).call(this,require("buffer").Buffer)
-},{"./interlace":80,"./paeth-predictor":84,"buffer":5}],79:[function(require,module,exports){
+},{"./interlace":82,"./paeth-predictor":86,"buffer":7}],81:[function(require,module,exports){
 (function (Buffer){
 'use strict';
 
@@ -30984,7 +31038,7 @@ module.exports = function(indata, imageData) {
 };
 
 }).call(this,require("buffer").Buffer)
-},{"buffer":5}],80:[function(require,module,exports){
+},{"buffer":7}],82:[function(require,module,exports){
 'use strict';
 
 // Adam 7
@@ -31072,7 +31126,7 @@ exports.getInterlaceIterator = function(width) {
     return (outerX * 4) + (outerY * width * 4);
   };
 };
-},{}],81:[function(require,module,exports){
+},{}],83:[function(require,module,exports){
 (function (Buffer){
 'use strict';
 
@@ -31121,7 +31175,7 @@ PackerAsync.prototype.pack = function(data, width, height, gamma) {
 };
 
 }).call(this,require("buffer").Buffer)
-},{"./constants":73,"./packer":83,"buffer":5,"stream":111,"util":119}],82:[function(require,module,exports){
+},{"./constants":75,"./packer":85,"buffer":7,"stream":111,"util":119}],84:[function(require,module,exports){
 (function (Buffer){
 'use strict';
 
@@ -31173,7 +31227,7 @@ module.exports = function(metaData, opt) {
 };
 
 }).call(this,require("buffer").Buffer)
-},{"./constants":73,"./packer":83,"buffer":5,"zlib":4}],83:[function(require,module,exports){
+},{"./constants":75,"./packer":85,"buffer":7,"zlib":5}],85:[function(require,module,exports){
 (function (Buffer){
 'use strict';
 
@@ -31268,7 +31322,7 @@ Packer.prototype.packIEND = function() {
   return this._packChunk(constants.TYPE_IEND, null);
 };
 }).call(this,require("buffer").Buffer)
-},{"./bitpacker":71,"./constants":73,"./crc":74,"./filter-pack":75,"buffer":5,"zlib":4}],84:[function(require,module,exports){
+},{"./bitpacker":73,"./constants":75,"./crc":76,"./filter-pack":77,"buffer":7,"zlib":5}],86:[function(require,module,exports){
 'use strict';
 
 module.exports = function paethPredictor(left, above, upLeft) {
@@ -31286,7 +31340,7 @@ module.exports = function paethPredictor(left, above, upLeft) {
   }
   return upLeft;
 };
-},{}],85:[function(require,module,exports){
+},{}],87:[function(require,module,exports){
 'use strict';
 
 var util = require('util');
@@ -31398,7 +31452,7 @@ ParserAsync.prototype._complete = function(filteredData) {
   this.emit('parsed', normalisedBitmapData);
 };
 
-},{"./bitmapper":70,"./chunkstream":72,"./filter-parse-async":76,"./format-normaliser":79,"./parser":87,"util":119,"zlib":4}],86:[function(require,module,exports){
+},{"./bitmapper":72,"./chunkstream":74,"./filter-parse-async":78,"./format-normaliser":81,"./parser":89,"util":119,"zlib":5}],88:[function(require,module,exports){
 (function (Buffer){
 'use strict';
 
@@ -31493,7 +31547,7 @@ module.exports = function(buffer, options) {
 };
 
 }).call(this,require("buffer").Buffer)
-},{"./bitmapper":70,"./filter-parse-sync":77,"./format-normaliser":79,"./parser":87,"./sync-reader":90,"buffer":5,"zlib":4}],87:[function(require,module,exports){
+},{"./bitmapper":72,"./filter-parse-sync":79,"./format-normaliser":81,"./parser":89,"./sync-reader":92,"buffer":7,"zlib":5}],89:[function(require,module,exports){
 (function (Buffer){
 'use strict';
 
@@ -31787,7 +31841,7 @@ Parser.prototype._parseIEND = function(data) {
 };
 
 }).call(this,require("buffer").Buffer)
-},{"./constants":73,"./crc":74,"buffer":5}],88:[function(require,module,exports){
+},{"./constants":75,"./crc":76,"buffer":7}],90:[function(require,module,exports){
 'use strict';
 
 
@@ -31805,7 +31859,7 @@ exports.write = function(png) {
   return pack(png);
 };
 
-},{"./packer-sync":82,"./parser-sync":86}],89:[function(require,module,exports){
+},{"./packer-sync":84,"./parser-sync":88}],91:[function(require,module,exports){
 (function (process,Buffer){
 'use strict';
 
@@ -31972,7 +32026,7 @@ PNG.prototype.adjustGamma = function() {
 };
 
 }).call(this,require('_process'),require("buffer").Buffer)
-},{"./packer-async":81,"./parser-async":85,"./png-sync":88,"_process":92,"buffer":5,"stream":111,"util":119}],90:[function(require,module,exports){
+},{"./packer-async":83,"./parser-async":87,"./png-sync":90,"_process":94,"buffer":7,"stream":111,"util":119}],92:[function(require,module,exports){
 'use strict';
 
 var SyncReader = module.exports = function(buffer) {
@@ -32025,7 +32079,7 @@ SyncReader.prototype.process = function() {
 
 };
 
-},{}],91:[function(require,module,exports){
+},{}],93:[function(require,module,exports){
 (function (process){
 'use strict';
 
@@ -32072,7 +32126,7 @@ function nextTick(fn, arg1, arg2, arg3) {
 }
 
 }).call(this,require('_process'))
-},{"_process":92}],92:[function(require,module,exports){
+},{"_process":94}],94:[function(require,module,exports){
 // shim for using process in browser
 var process = module.exports = {};
 
@@ -32258,31 +32312,10 @@ process.chdir = function (dir) {
 };
 process.umask = function() { return 0; };
 
-},{}],93:[function(require,module,exports){
+},{}],95:[function(require,module,exports){
 module.exports = require('./lib/_stream_duplex.js');
 
-},{"./lib/_stream_duplex.js":94}],94:[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.
-
+},{"./lib/_stream_duplex.js":96}],96:[function(require,module,exports){
 // 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
@@ -32292,10 +32325,6 @@ module.exports = require('./lib/_stream_duplex.js');
 
 /*<replacement>*/
 
-var processNextTick = require('process-nextick-args');
-/*</replacement>*/
-
-/*<replacement>*/
 var objectKeys = Object.keys || function (obj) {
   var keys = [];
   for (var key in obj) {
@@ -32306,6 +32335,10 @@ var objectKeys = Object.keys || function (obj) {
 
 module.exports = Duplex;
 
+/*<replacement>*/
+var processNextTick = require('process-nextick-args');
+/*</replacement>*/
+
 /*<replacement>*/
 var util = require('core-util-is');
 util.inherits = require('inherits');
@@ -32353,61 +32386,12 @@ function onEndNT(self) {
   self.end();
 }
 
-Object.defineProperty(Duplex.prototype, 'destroyed', {
-  get: function () {
-    if (this._readableState === undefined || this._writableState === undefined) {
-      return false;
-    }
-    return this._readableState.destroyed && this._writableState.destroyed;
-  },
-  set: function (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;
-  }
-});
-
-Duplex.prototype._destroy = function (err, cb) {
-  this.push(null);
-  this.end();
-
-  processNextTick(cb, err);
-};
-
 function forEach(xs, f) {
   for (var i = 0, l = xs.length; i < l; i++) {
     f(xs[i], i);
   }
 }
-},{"./_stream_readable":96,"./_stream_writable":98,"core-util-is":15,"inherits":45,"process-nextick-args":91}],95:[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.
-
+},{"./_stream_readable":98,"./_stream_writable":100,"core-util-is":19,"inherits":47,"process-nextick-args":93}],97:[function(require,module,exports){
 // a passthrough stream.
 // basically just the most minimal sort of Transform stream.
 // Every written chunk gets output as-is.
@@ -32434,38 +32418,16 @@ function PassThrough(options) {
 PassThrough.prototype._transform = function (chunk, encoding, cb) {
   cb(null, chunk);
 };
-},{"./_stream_transform":97,"core-util-is":15,"inherits":45}],96:[function(require,module,exports){
-(function (process,global){
-// 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.
-
+},{"./_stream_transform":99,"core-util-is":19,"inherits":47}],98:[function(require,module,exports){
+(function (process){
 'use strict';
 
-/*<replacement>*/
+module.exports = Readable;
 
+/*<replacement>*/
 var processNextTick = require('process-nextick-args');
 /*</replacement>*/
 
-module.exports = Readable;
-
 /*<replacement>*/
 var isArray = require('isarray');
 /*</replacement>*/
@@ -32488,17 +32450,9 @@ var EElistenerCount = function (emitter, type) {
 var Stream = require('./internal/streams/stream');
 /*</replacement>*/
 
-// TODO(bmeurer): Change this back to const once hole checks are
-// properly optimized away early in Ignition+TurboFan.
+var Buffer = require('buffer').Buffer;
 /*<replacement>*/
-var Buffer = require('safe-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 bufferShim = require('buffer-shims');
 /*</replacement>*/
 
 /*<replacement>*/
@@ -32517,7 +32471,6 @@ if (debugUtil && debugUtil.debuglog) {
 /*</replacement>*/
 
 var BufferList = require('./internal/streams/BufferList');
-var destroyImpl = require('./internal/streams/destroy');
 var StringDecoder;
 
 util.inherits(Readable, Stream);
@@ -32556,7 +32509,7 @@ function ReadableState(options, stream) {
   this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm;
 
   // cast to ints.
-  this.highWaterMark = Math.floor(this.highWaterMark);
+  this.highWaterMark = ~~this.highWaterMark;
 
   // 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
@@ -32570,10 +32523,10 @@ function ReadableState(options, stream) {
   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.
+  // 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;
 
   // whenever we return null, then we set a flag to say
@@ -32583,14 +32536,15 @@ function ReadableState(options, stream) {
   this.readableListening = false;
   this.resumeScheduled = false;
 
-  // 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';
 
+  // when piping, we only care about 'readable' events that happen
+  // after read()ing all the bytes and not getting any pushback.
+  this.ranOut = false;
+
   // the number of writers that are awaiting a drain event in .pipe()s
   this.awaitDrain = 0;
 
@@ -32616,129 +32570,87 @@ function Readable(options) {
   // legacy
   this.readable = true;
 
-  if (options) {
-    if (typeof options.read === 'function') this._read = options.read;
-
-    if (typeof options.destroy === 'function') this._destroy = options.destroy;
-  }
+  if (options && typeof options.read === 'function') this._read = options.read;
 
   Stream.call(this);
 }
 
-Object.defineProperty(Readable.prototype, 'destroyed', {
-  get: function () {
-    if (this._readableState === undefined) {
-      return false;
-    }
-    return this._readableState.destroyed;
-  },
-  set: function (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) {
-  this.push(null);
-  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;
+  if (!state.objectMode && typeof chunk === 'string') {
+    encoding = encoding || state.defaultEncoding;
+    if (encoding !== state.encoding) {
+      chunk = bufferShim.from(chunk, encoding);
+      encoding = '';
     }
-  } else {
-    skipChunkCheck = true;
   }
 
-  return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);
+  return readableAddChunk(this, state, chunk, encoding, false);
 };
 
 // Unshift should *always* be something directly out of read()
 Readable.prototype.unshift = function (chunk) {
-  return readableAddChunk(this, chunk, null, true, false);
+  var state = this._readableState;
+  return readableAddChunk(this, state, chunk, '', true);
 };
 
-function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
-  var state = stream._readableState;
-  if (chunk === null) {
+Readable.prototype.isPaused = function () {
+  return this._readableState.flowing === false;
+};
+
+function readableAddChunk(stream, state, chunk, encoding, addToFront) {
+  var er = chunkInvalid(state, chunk);
+  if (er) {
+    stream.emit('error', er);
+  } else if (chunk === null) {
     state.reading = false;
     onEofChunk(stream, state);
-  } else {
-    var er;
-    if (!skipChunkCheck) er = chunkInvalid(state, chunk);
-    if (er) {
-      stream.emit('error', er);
-    } else if (state.objectMode || chunk && chunk.length > 0) {
-      if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) {
-        chunk = _uint8ArrayToBuffer(chunk);
+  } else if (state.objectMode || chunk && chunk.length > 0) {
+    if (state.ended && !addToFront) {
+      var e = new Error('stream.push() after EOF');
+      stream.emit('error', e);
+    } else if (state.endEmitted && addToFront) {
+      var _e = new Error('stream.unshift() after end event');
+      stream.emit('error', _e);
+    } else {
+      var skipAdd;
+      if (state.decoder && !addToFront && !encoding) {
+        chunk = state.decoder.write(chunk);
+        skipAdd = !state.objectMode && chunk.length === 0;
       }
 
-      if (addToFront) {
-        if (state.endEmitted) stream.emit('error', new Error('stream.unshift() after end event'));else addChunk(stream, state, chunk, true);
-      } else if (state.ended) {
-        stream.emit('error', new Error('stream.push() after EOF'));
-      } 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);
+      if (!addToFront) state.reading = false;
+
+      // Don't add to the buffer if we've decoded to an empty string chunk and
+      // we're not in object mode
+      if (!skipAdd) {
+        // if we want the data now, just emit it.
+        if (state.flowing && state.length === 0 && !state.sync) {
+          stream.emit('data', chunk);
+          stream.read(0);
         } else {
-          addChunk(stream, state, chunk, false);
+          // 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);
         }
       }
-    } else if (!addToFront) {
-      state.reading = false;
+
+      maybeReadMore(stream, state);
     }
+  } else if (!addToFront) {
+    state.reading = false;
   }
 
   return needMoreData(state);
 }
 
-function addChunk(stream, state, chunk, addToFront) {
-  if (state.flowing && state.length === 0 && !state.sync) {
-    stream.emit('data', chunk);
-    stream.read(0);
-  } 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 TypeError('Invalid non-string/buffer chunk');
-  }
-  return er;
-}
-
 // if it's past the high water mark, we can push in some more.
 // Also, if we have no data yet, we can stand some
 // more bytes.  This is to work around cases where hwm=0,
@@ -32750,10 +32662,6 @@ function needMoreData(state) {
   return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0);
 }
 
-Readable.prototype.isPaused = function () {
-  return this._readableState.flowing === false;
-};
-
 // backwards compatibility.
 Readable.prototype.setEncoding = function (enc) {
   if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
@@ -32902,6 +32810,14 @@ Readable.prototype.read = function (n) {
   return ret;
 };
 
+function chunkInvalid(state, chunk) {
+  var er = null;
+  if (!Buffer.isBuffer(chunk) && typeof chunk !== 'string' && chunk !== null && chunk !== undefined && !state.objectMode) {
+    er = new TypeError('Invalid non-string/buffer chunk');
+  }
+  return er;
+}
+
 function onEofChunk(stream, state) {
   if (state.ended) return;
   if (state.decoder) {
@@ -32989,17 +32905,14 @@ Readable.prototype.pipe = function (dest, pipeOpts) {
 
   var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;
 
-  var endFn = doEnd ? onend : unpipe;
+  var endFn = doEnd ? onend : cleanup;
   if (state.endEmitted) processNextTick(endFn);else src.once('end', endFn);
 
   dest.on('unpipe', onunpipe);
-  function onunpipe(readable, unpipeInfo) {
+  function onunpipe(readable) {
     debug('onunpipe');
     if (readable === src) {
-      if (unpipeInfo && unpipeInfo.hasUnpiped === false) {
-        unpipeInfo.hasUnpiped = true;
-        cleanup();
-      }
+      cleanup();
     }
   }
 
@@ -33025,7 +32938,7 @@ Readable.prototype.pipe = function (dest, pipeOpts) {
     dest.removeListener('error', onerror);
     dest.removeListener('unpipe', onunpipe);
     src.removeListener('end', onend);
-    src.removeListener('end', unpipe);
+    src.removeListener('end', cleanup);
     src.removeListener('data', ondata);
 
     cleanedUp = true;
@@ -33118,7 +33031,6 @@ function pipeOnDrain(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;
@@ -33134,7 +33046,7 @@ Readable.prototype.unpipe = function (dest) {
     state.pipes = null;
     state.pipesCount = 0;
     state.flowing = false;
-    if (dest) dest.emit('unpipe', this, unpipeInfo);
+    if (dest) dest.emit('unpipe', this);
     return this;
   }
 
@@ -33149,7 +33061,7 @@ Readable.prototype.unpipe = function (dest) {
     state.flowing = false;
 
     for (var i = 0; i < len; i++) {
-      dests[i].emit('unpipe', this, unpipeInfo);
+      dests[i].emit('unpipe', this);
     }return this;
   }
 
@@ -33161,7 +33073,7 @@ Readable.prototype.unpipe = function (dest) {
   state.pipesCount -= 1;
   if (state.pipesCount === 1) state.pipes = state.pipes[0];
 
-  dest.emit('unpipe', this, unpipeInfo);
+  dest.emit('unpipe', this);
 
   return this;
 };
@@ -33182,7 +33094,7 @@ Readable.prototype.on = function (ev, fn) {
       if (!state.reading) {
         processNextTick(nReadingNextTick, this);
       } else if (state.length) {
-        emitReadable(this);
+        emitReadable(this, state);
       }
     }
   }
@@ -33383,7 +33295,7 @@ function copyFromBufferString(n, list) {
 // This function is designed to be inlinable, so please take care when making
 // changes to the function body.
 function copyFromBuffer(n, list) {
-  var ret = Buffer.allocUnsafe(n);
+  var ret = bufferShim.allocUnsafe(n);
   var p = list.head;
   var c = 1;
   p.data.copy(ret);
@@ -33443,29 +33355,8 @@ function indexOf(xs, x) {
   }
   return -1;
 }
-}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{"./_stream_duplex":94,"./internal/streams/BufferList":99,"./internal/streams/destroy":100,"./internal/streams/stream":101,"_process":92,"core-util-is":15,"events":20,"inherits":45,"isarray":48,"process-nextick-args":91,"safe-buffer":106,"string_decoder/":112,"util":2}],97:[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.
-
+}).call(this,require('_process'))
+},{"./_stream_duplex":96,"./internal/streams/BufferList":101,"./internal/streams/stream":102,"_process":94,"buffer":7,"buffer-shims":9,"core-util-is":19,"events":24,"inherits":47,"isarray":50,"process-nextick-args":93,"string_decoder/":112,"util":3}],99:[function(require,module,exports){
 // 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
@@ -33539,9 +33430,7 @@ function afterTransform(stream, er, data) {
 
   var cb = ts.writecb;
 
-  if (!cb) {
-    return stream.emit('error', new Error('write callback called multiple times'));
-  }
+  if (!cb) return stream.emit('error', new Error('no writecb in Transform class'));
 
   ts.writechunk = null;
   ts.writecb = null;
@@ -33634,15 +33523,6 @@ Transform.prototype._read = function (n) {
   }
 };
 
-Transform.prototype._destroy = function (err, cb) {
-  var _this = this;
-
-  Duplex.prototype._destroy.call(this, err, function (err2) {
-    cb(err2);
-    _this.emit('close');
-  });
-};
-
 function done(stream, er, data) {
   if (er) return stream.emit('error', er);
 
@@ -33659,62 +33539,19 @@ function done(stream, er, data) {
 
   return stream.push(null);
 }
-},{"./_stream_duplex":94,"core-util-is":15,"inherits":45}],98:[function(require,module,exports){
-(function (process,global){
-// 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.
-
+},{"./_stream_duplex":96,"core-util-is":19,"inherits":47}],100:[function(require,module,exports){
+(function (process){
 // 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';
 
-/*<replacement>*/
-
-var processNextTick = require('process-nextick-args');
-/*</replacement>*/
-
 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 processNextTick = require('process-nextick-args');
+/*</replacement>*/
 
 /*<replacement>*/
 var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : processNextTick;
@@ -33741,23 +33578,22 @@ var internalUtil = {
 var Stream = require('./internal/streams/stream');
 /*</replacement>*/
 
+var Buffer = require('buffer').Buffer;
 /*<replacement>*/
-var Buffer = require('safe-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 bufferShim = require('buffer-shims');
 /*</replacement>*/
 
-var destroyImpl = require('./internal/streams/destroy');
-
 util.inherits(Writable, Stream);
 
 function nop() {}
 
+function WriteReq(chunk, encoding, cb) {
+  this.chunk = chunk;
+  this.encoding = encoding;
+  this.callback = cb;
+  this.next = null;
+}
+
 function WritableState(options, stream) {
   Duplex = Duplex || require('./_stream_duplex');
 
@@ -33777,10 +33613,7 @@ function WritableState(options, stream) {
   this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm;
 
   // cast to ints.
-  this.highWaterMark = Math.floor(this.highWaterMark);
-
-  // if _final has been called
-  this.finalCalled = false;
+  this.highWaterMark = ~~this.highWaterMark;
 
   // drain event flag.
   this.needDrain = false;
@@ -33791,9 +33624,6 @@ function WritableState(options, stream) {
   // 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.
@@ -33875,7 +33705,7 @@ WritableState.prototype.getBuffer = function getBuffer() {
     Object.defineProperty(WritableState.prototype, 'buffer', {
       get: internalUtil.deprecate(function () {
         return this.getBuffer();
-      }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')
+      }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.')
     });
   } catch (_) {}
 })();
@@ -33921,10 +33751,6 @@ function Writable(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);
@@ -33965,11 +33791,7 @@ function validChunk(stream, state, chunk, cb) {
 Writable.prototype.write = function (chunk, encoding, cb) {
   var state = this._writableState;
   var ret = false;
-  var isBuf = _isUint8Array(chunk) && !state.objectMode;
-
-  if (isBuf && !Buffer.isBuffer(chunk)) {
-    chunk = _uint8ArrayToBuffer(chunk);
-  }
+  var isBuf = Buffer.isBuffer(chunk);
 
   if (typeof encoding === 'function') {
     cb = encoding;
@@ -34014,7 +33836,7 @@ Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
 
 function decodeChunk(state, chunk, encoding) {
   if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
-    chunk = Buffer.from(chunk, encoding);
+    chunk = bufferShim.from(chunk, encoding);
   }
   return chunk;
 }
@@ -34024,12 +33846,8 @@ function decodeChunk(state, chunk, encoding) {
 // 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;
-    }
+    chunk = decodeChunk(state, chunk, encoding);
+    if (Buffer.isBuffer(chunk)) encoding = 'buffer';
   }
   var len = state.objectMode ? 1 : chunk.length;
 
@@ -34041,13 +33859,7 @@ function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {
 
   if (state.writing || state.corked) {
     var last = state.lastBufferedRequest;
-    state.lastBufferedRequest = {
-      chunk: chunk,
-      encoding: encoding,
-      isBuf: isBuf,
-      callback: cb,
-      next: null
-    };
+    state.lastBufferedRequest = new WriteReq(chunk, encoding, cb);
     if (last) {
       last.next = state.lastBufferedRequest;
     } else {
@@ -34072,26 +33884,10 @@ function doWrite(stream, state, writev, len, chunk, encoding, cb) {
 
 function onwriteError(stream, state, sync, er, cb) {
   --state.pendingcb;
+  if (sync) processNextTick(cb, er);else cb(er);
 
-  if (sync) {
-    // defer the callback if we are being called synchronously
-    // to avoid piling up things on the stack
-    processNextTick(cb, er);
-    // this can emit finish, and it will always happen
-    // after error
-    processNextTick(finishMaybe, stream, state);
-    stream._writableState.errorEmitted = true;
-    stream.emit('error', er);
-  } else {
-    // the caller expect this to happen before if
-    // it is async
-    cb(er);
-    stream._writableState.errorEmitted = true;
-    stream.emit('error', er);
-    // this can emit finish, but finish must
-    // always follow error
-    finishMaybe(stream, state);
-  }
+  stream._writableState.errorEmitted = true;
+  stream.emit('error', er);
 }
 
 function onwriteStateUpdate(state) {
@@ -34156,14 +33952,11 @@ function clearBuffer(stream, state) {
     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);
 
@@ -34237,37 +34030,23 @@ Writable.prototype.end = function (chunk, encoding, cb) {
 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) {
-      stream.emit('error', err);
-    }
+
+function prefinish(stream, state) {
+  if (!state.prefinished) {
     state.prefinished = true;
     stream.emit('prefinish');
-    finishMaybe(stream, state);
-  });
-}
-function prefinish(stream, state) {
-  if (!state.prefinished && !state.finalCalled) {
-    if (typeof stream._final === 'function') {
-      state.pendingcb++;
-      state.finalCalled = true;
-      processNextTick(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) {
+      prefinish(stream, state);
       state.finished = true;
       stream.emit('finish');
+    } else {
+      prefinish(stream, state);
     }
   }
   return need;
@@ -34283,204 +34062,102 @@ function endWritable(stream, state, cb) {
   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;
-  }
-  if (state.corkedRequestsFree) {
-    state.corkedRequestsFree.next = corkReq;
-  } else {
-    state.corkedRequestsFree = corkReq;
-  }
-}
-
-Object.defineProperty(Writable.prototype, 'destroyed', {
-  get: function () {
-    if (this._writableState === undefined) {
-      return false;
-    }
-    return this._writableState.destroyed;
-  },
-  set: function (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) {
-  this.end();
-  cb(err);
-};
-}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{"./_stream_duplex":94,"./internal/streams/destroy":100,"./internal/streams/stream":101,"_process":92,"core-util-is":15,"inherits":45,"process-nextick-args":91,"safe-buffer":106,"util-deprecate":116}],99:[function(require,module,exports){
-'use strict';
-
-/*<replacement>*/
-
-function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
-
-var Buffer = require('safe-buffer').Buffer;
-/*</replacement>*/
-
-function copyBuffer(src, target, offset) {
-  src.copy(target, offset);
-}
-
-module.exports = function () {
-  function BufferList() {
-    _classCallCheck(this, BufferList);
-
-    this.head = null;
-    this.tail = null;
-    this.length = 0;
-  }
-
-  BufferList.prototype.push = 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;
-  };
-
-  BufferList.prototype.unshift = function unshift(v) {
-    var entry = { data: v, next: this.head };
-    if (this.length === 0) this.tail = entry;
-    this.head = entry;
-    ++this.length;
-  };
-
-  BufferList.prototype.shift = 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;
-  };
-
-  BufferList.prototype.clear = function clear() {
-    this.head = this.tail = null;
-    this.length = 0;
-  };
-
-  BufferList.prototype.join = 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;
-  };
-
-  BufferList.prototype.concat = function concat(n) {
-    if (this.length === 0) return Buffer.alloc(0);
-    if (this.length === 1) return this.head.data;
-    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;
-  };
-
-  return BufferList;
-}();
-},{"safe-buffer":106}],100:[function(require,module,exports){
-'use strict';
-
-/*<replacement>*/
-
-var processNextTick = require('process-nextick-args');
-/*</replacement>*/
-
-// undocumented cb() API, needed for core, not for public API
-function destroy(err, cb) {
+// 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;
 
-  var readableDestroyed = this._readableState && this._readableState.destroyed;
-  var writableDestroyed = this._writableState && this._writableState.destroyed;
-
-  if (readableDestroyed || writableDestroyed) {
-    if (cb) {
+  this.next = null;
+  this.entry = null;
+  this.finish = function (err) {
+    var entry = _this.entry;
+    _this.entry = null;
+    while (entry) {
+      var cb = entry.callback;
+      state.pendingcb--;
       cb(err);
-    } else if (err && (!this._writableState || !this._writableState.errorEmitted)) {
-      processNextTick(emitErrorNT, this, err);
+      entry = entry.next;
     }
-    return;
-  }
-
-  // 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) {
-      processNextTick(emitErrorNT, _this, err);
-      if (_this._writableState) {
-        _this._writableState.errorEmitted = true;
-      }
-    } else if (cb) {
-      cb(err);
+    if (state.corkedRequestsFree) {
+      state.corkedRequestsFree.next = _this;
+    } else {
+      state.corkedRequestsFree = _this;
     }
-  });
+  };
+}
+}).call(this,require('_process'))
+},{"./_stream_duplex":96,"./internal/streams/stream":102,"_process":94,"buffer":7,"buffer-shims":9,"core-util-is":19,"inherits":47,"process-nextick-args":93,"util-deprecate":116}],101:[function(require,module,exports){
+'use strict';
+
+var Buffer = require('buffer').Buffer;
+/*<replacement>*/
+var bufferShim = require('buffer-shims');
+/*</replacement>*/
+
+module.exports = BufferList;
+
+function BufferList() {
+  this.head = null;
+  this.tail = null;
+  this.length = 0;
 }
 
-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.finished = false;
-    this._writableState.errorEmitted = false;
-  }
-}
-
-function emitErrorNT(self, err) {
-  self.emit('error', err);
-}
-
-module.exports = {
-  destroy: destroy,
-  undestroy: undestroy
+BufferList.prototype.push = function (v) {
+  var entry = { data: v, next: null };
+  if (this.length > 0) this.tail.next = entry;else this.head = entry;
+  this.tail = entry;
+  ++this.length;
 };
-},{"process-nextick-args":91}],101:[function(require,module,exports){
+
+BufferList.prototype.unshift = function (v) {
+  var entry = { data: v, next: this.head };
+  if (this.length === 0) this.tail = entry;
+  this.head = entry;
+  ++this.length;
+};
+
+BufferList.prototype.shift = function () {
+  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;
+};
+
+BufferList.prototype.clear = function () {
+  this.head = this.tail = null;
+  this.length = 0;
+};
+
+BufferList.prototype.join = function (s) {
+  if (this.length === 0) return '';
+  var p = this.head;
+  var ret = '' + p.data;
+  while (p = p.next) {
+    ret += s + p.data;
+  }return ret;
+};
+
+BufferList.prototype.concat = function (n) {
+  if (this.length === 0) return bufferShim.alloc(0);
+  if (this.length === 1) return this.head.data;
+  var ret = bufferShim.allocUnsafe(n >>> 0);
+  var p = this.head;
+  var i = 0;
+  while (p) {
+    p.data.copy(ret, i);
+    i += p.data.length;
+    p = p.next;
+  }
+  return ret;
+};
+},{"buffer":7,"buffer-shims":9}],102:[function(require,module,exports){
 module.exports = require('events').EventEmitter;
 
-},{"events":20}],102:[function(require,module,exports){
+},{"events":24}],103:[function(require,module,exports){
 module.exports = require('./readable').PassThrough
 
-},{"./readable":103}],103:[function(require,module,exports){
+},{"./readable":104}],104:[function(require,module,exports){
 exports = module.exports = require('./lib/_stream_readable.js');
 exports.Stream = exports;
 exports.Readable = exports;
@@ -34489,77 +34166,13 @@ exports.Duplex = require('./lib/_stream_duplex.js');
 exports.Transform = require('./lib/_stream_transform.js');
 exports.PassThrough = require('./lib/_stream_passthrough.js');
 
-},{"./lib/_stream_duplex.js":94,"./lib/_stream_passthrough.js":95,"./lib/_stream_readable.js":96,"./lib/_stream_transform.js":97,"./lib/_stream_writable.js":98}],104:[function(require,module,exports){
+},{"./lib/_stream_duplex.js":96,"./lib/_stream_passthrough.js":97,"./lib/_stream_readable.js":98,"./lib/_stream_transform.js":99,"./lib/_stream_writable.js":100}],105:[function(require,module,exports){
 module.exports = require('./readable').Transform
 
-},{"./readable":103}],105:[function(require,module,exports){
+},{"./readable":104}],106:[function(require,module,exports){
 module.exports = require('./lib/_stream_writable.js');
 
-},{"./lib/_stream_writable.js":98}],106:[function(require,module,exports){
-/* 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)
-}
-
-// 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":5}],107:[function(require,module,exports){
+},{"./lib/_stream_writable.js":100}],107:[function(require,module,exports){
 var encode = require('./lib/encoder'),
     decode = require('./lib/decoder');
 
@@ -35551,7 +35164,7 @@ function decode(jpegData) {
 }
 
 }).call(this,require("buffer").Buffer)
-},{"buffer":5}],109:[function(require,module,exports){
+},{"buffer":7}],109:[function(require,module,exports){
 (function (Buffer){
 /*
   Copyright (c) 2008, Adobe Systems Incorporated
@@ -36321,7 +35934,7 @@ function getImageDataFromImage(idOrElement){
 }
 
 }).call(this,require("buffer").Buffer)
-},{"buffer":5}],110:[function(require,module,exports){
+},{"buffer":7}],110:[function(require,module,exports){
 (function (Buffer){
 'use strict'
 
@@ -36466,7 +36079,7 @@ module.exports = function savePixels (array, type, options) {
 }
 
 }).call(this,require("buffer").Buffer)
-},{"buffer":5,"contentstream":6,"gif-encoder":31,"jpeg-js":107,"ndarray":56,"ndarray-ops":53,"pngjs-nozlib":89,"through":113}],111:[function(require,module,exports){
+},{"buffer":7,"contentstream":10,"gif-encoder":35,"jpeg-js":107,"ndarray":58,"ndarray-ops":55,"pngjs-nozlib":91,"through":113}],111:[function(require,module,exports){
 // Copyright Joyent, Inc. and other Node contributors.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
@@ -36595,10 +36208,11 @@ Stream.prototype.pipe = function(dest, options) {
   return dest;
 };
 
-},{"events":20,"inherits":45,"readable-stream/duplex.js":93,"readable-stream/passthrough.js":102,"readable-stream/readable.js":103,"readable-stream/transform.js":104,"readable-stream/writable.js":105}],112:[function(require,module,exports){
+},{"events":24,"inherits":47,"readable-stream/duplex.js":95,"readable-stream/passthrough.js":103,"readable-stream/readable.js":104,"readable-stream/transform.js":105,"readable-stream/writable.js":106}],112:[function(require,module,exports){
 'use strict';
 
-var Buffer = require('safe-buffer').Buffer;
+var Buffer = require('buffer').Buffer;
+var bufferShim = require('buffer-shims');
 
 var isEncoding = Buffer.isEncoding || function (encoding) {
   encoding = '' + encoding;
@@ -36675,7 +36289,7 @@ function StringDecoder(encoding) {
   }
   this.lastNeed = 0;
   this.lastTotal = 0;
-  this.lastChar = Buffer.allocUnsafe(nb);
+  this.lastChar = bufferShim.allocUnsafe(nb);
 }
 
 StringDecoder.prototype.write = function (buf) {
@@ -36868,7 +36482,7 @@ function simpleWrite(buf) {
 function simpleEnd(buf) {
   return buf && buf.length ? this.write(buf) : '';
 }
-},{"safe-buffer":106}],113:[function(require,module,exports){
+},{"buffer":7,"buffer-shims":9}],113:[function(require,module,exports){
 (function (process){
 var Stream = require('stream')
 
@@ -36980,7 +36594,7 @@ function through (write, end, opts) {
 
 
 }).call(this,require('_process'))
-},{"_process":92,"stream":111}],114:[function(require,module,exports){
+},{"_process":94,"stream":111}],114:[function(require,module,exports){
 "use strict"
 
 function unique_pred(list, compare) {
@@ -37049,7 +36663,7 @@ module.exports = function urifyNode (file) {
   return 'data:' + type + ';base64,' + data;
 };
 
-},{"fs":43,"mime":51}],116:[function(require,module,exports){
+},{"fs":6,"mime":53}],116:[function(require,module,exports){
 (function (global){
 
 /**
@@ -37121,8 +36735,8 @@ function config (name) {
 
 }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
 },{}],117:[function(require,module,exports){
-arguments[4][45][0].apply(exports,arguments)
-},{"dup":45}],118:[function(require,module,exports){
+arguments[4][47][0].apply(exports,arguments)
+},{"dup":47}],118:[function(require,module,exports){
 module.exports = function isBuffer(arg) {
   return arg && typeof arg === 'object'
     && typeof arg.copy === 'function'
@@ -37719,7 +37333,7 @@ function hasOwnProperty(obj, prop) {
 }
 
 }).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{"./support/isBuffer":118,"_process":92,"inherits":117}],120:[function(require,module,exports){
+},{"./support/isBuffer":118,"_process":94,"inherits":117}],120:[function(require,module,exports){
 function AddStep(ref, image, name, o) {
 
   function addStep(image, name, o_) {
@@ -37806,7 +37420,7 @@ module.exports = function ExportBin(dir = "./output/",ref) {
   });
 }
 
-},{"data-uri-to-buffer":19,"fs":43}],122:[function(require,module,exports){
+},{"data-uri-to-buffer":23,"fs":6}],122:[function(require,module,exports){
 function objTypeOf(object){
   return Object.prototype.toString.call(object).split(" ")[1].slice(0,-1)
 }
@@ -38196,7 +37810,7 @@ ImageSequencer = function ImageSequencer(options) {
 }
 module.exports = ImageSequencer;
 
-},{"./AddStep":120,"./ExportBin":121,"./FormatInput":122,"./InsertStep":124,"./LoadImage":125,"./Modules":126,"./ReplaceImage":127,"./Run":128,"./UserInterface":129,"fs":43,"jquery":49}],124:[function(require,module,exports){
+},{"./AddStep":120,"./ExportBin":121,"./FormatInput":122,"./InsertStep":124,"./LoadImage":125,"./Modules":126,"./ReplaceImage":127,"./Run":128,"./UserInterface":129,"fs":6,"jquery":51}],124:[function(require,module,exports){
 function InsertStep(ref, image, index, name, o) {
 
   function insertStep(image, index, name, o_) {
@@ -38560,7 +38174,7 @@ module.exports = function Crop(input,options,callback) {
 };
 
 }).call(this,require("buffer").Buffer)
-},{"buffer":5,"get-pixels":29,"save-pixels":110}],131:[function(require,module,exports){
+},{"buffer":7,"get-pixels":33,"save-pixels":110}],131:[function(require,module,exports){
 /*
  * Image Cropping module
  * Usage:
@@ -38624,6 +38238,8 @@ module.exports = function Crop(input,options,callback) {
 },{"./Crop":130}],132:[function(require,module,exports){
 module.exports={
   "name": "Crop",
+  "description": "Crop image to given x, y, w, h",
+  "url": "https://github.com/publiclab/image-sequencer/tree/master/MODULES.md",
   "inputs": {
     "x": {
       "type": "integer",
@@ -38704,7 +38320,7 @@ module.exports = function DoNothing(options,UI) {
   }
 }
 
-},{"get-pixels":29,"jsqr":50}],134:[function(require,module,exports){
+},{"get-pixels":33,"jsqr":52}],134:[function(require,module,exports){
 module.exports={
   "name": "Decode QR",
   "inputs": {
@@ -38800,7 +38416,7 @@ module.exports = function DoNothing(options,UI) {
   }
 }
 
-},{"fisheyegl":21}],136:[function(require,module,exports){
+},{"fisheyegl":25}],136:[function(require,module,exports){
 module.exports={
   "name": "Fisheye GL",
   "inputs": {
@@ -39244,4 +38860,4 @@ module.exports = function PixelManipulation(image, options) {
 };
 
 }).call(this,require("buffer").Buffer)
-},{"buffer":5,"get-pixels":29,"save-pixels":110}]},{},[123]);
+},{"buffer":7,"get-pixels":33,"save-pixels":110}]},{},[123]);
diff --git a/dist/image-sequencer.css b/examples/demo-old.css
similarity index 100%
rename from dist/image-sequencer.css
rename to examples/demo-old.css
diff --git a/examples/demo.css b/examples/demo.css
index f7589cfd..9ae9bc75 100644
--- a/examples/demo.css
+++ b/examples/demo.css
@@ -1,119 +1,92 @@
-/*@font-face {
-  font-family: "Poiret One";
-  src: url("Poiret One.woff2");
+/* https://github.com/theleagueof/league-spartan */
+@font-face {
+    font-family: 'League Spartan';
+    src: url('https://raw.githubusercontent.com/theleagueof/league-spartan/master/_webfonts/leaguespartan-bold.eot');
+    src: url('https://raw.githubusercontent.com/theleagueof/league-spartan/master/_webfonts/leaguespartan-bold.eot?#iefix') format('embedded-opentype'),
+         url('https://raw.githubusercontent.com/theleagueof/league-spartan/master/_webfonts/leaguespartan-bold.woff2') format('woff2'),
+         url('https://raw.githubusercontent.com/theleagueof/league-spartan/master/_webfonts/leaguespartan-bold.woff') format('woff'),
+         url('https://raw.githubusercontent.com/theleagueof/league-spartan/master/_webfonts/leaguespartan-bold.ttf') format('truetype'),
+         url('https://raw.githubusercontent.com/theleagueof/league-spartan/master/_webfonts/leaguespartan-bold.svg#league_spartanbold') format('svg');
+    font-weight: bold;
+    font-style: normal;
 }
-* {
-  padding: 0;
-  margin: 0;
-  box-sizing: border-box;
-  font-family: "Poiret One";
-}
-html, body {
-  min-height: 100vh;
-  width: 100vw;
-}
-body {
-  background: #fff;
-}
-.wrapper {
-  width: 100vw;
-  max-width: 1000px;
-  height: 100%;
-  min-height: 100vh;
-  margin: auto;
-  position: relative;
-}
-header {
-  position: relative;
-  height: 150px;
-  font-size: 45px;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  flex-direction: column;
-}
-footer {
-  position: absolute;
-  bottom: 0;
-  left: 0;
-  display: flex;
-  width: 100%;
-  align-items: center;
-  justify-content: space-around;
-  padding: 10px 0;
-  font-size: 20px;
-}
-section {
-  position: relative;
-  width: 100%;
-  min-height: 100px;
-  padding: 10px 15px;
-  font-size: 25px;
-  margin-bottom: 50px;
-}
-.rh {
-  display: flex;
-  flex-direction: column;
-}
-section .r {
-  display: flex;
-  flex-direction: row;
-  flex: auto;
-  align-items: center;
-  justify-content: space-around;
-  margin: 10px;
-}
-section .c {
-  flex: auto;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-}
-section span {
-  margin: 0 5px;
-}*/
 
-#addStep select, button, #addStep input {
-  font-family: sans-serif;
-  font-size: 18px !important;
-  height: 30px !important;
+body {
+  padding: 20px;
+  margin: 0 auto 200px;
+  max-width: 1000px;
+  background: #f8f8fa;
 }
+
+h1 {
+  font-family: 'League Spartan';
+  color: #445;
+}
+
+.header {
+  text-align: center;
+}
+
 .nomargin {
   margin: 0 !important;
 }
-.details {
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  flex-direction: column;
-  height: 100%;
+
+#imageSelect {
+  padding: 30px;
+  margin: 0 20% 30px;
+  border: 4px dashed #ccc;
+  border-radius: 8px;
+  text-align: center;
+  color: #444;
 }
-#steps .row {
-  display: flex;
-  flex-direction: row;
-  flex: auto;
-  align-items: center;
-  justify-content: space-around;
+
+.step {
+  margin-bottom: 20px;
+}
+
+.step .img-thumbnail {
+  margin-bottom: 20px;
+}
+
+.details {
+  border-top: 3px solid #444;
+  padding-left: 6px;
+}
+
+.details h3 {
+  font-family: monospace;
+  margin-top: 12px;
+  font-size: 1.3em;
+}
+
+.det {
+  padding: 10px 16px;
+  text-decoration: italic;
+}
+
+.tools {
+  margin: 10px 0;
+}
+
+#addStep {
+  max-width: 500px;
+  margin: 20px auto;
+}
+
+#addStep .labels {
+  text-align: right;
+  padding: 6px;
+  margin: 2px;
+  font-weight: bold;
+}
+
+@media (max-width:768px) {
+  #addStep .labels {
+    text-align: left;
+  }
+}
+
+#addStep .add {
+  text-align: center;
   margin: 10px;
 }
-.jumbotron {
-  background: transparent;
-}
-.form-horizontal {
-  display: flex;
-  justify-content: center;
-  align-items: center;
-  flex-direction: column;
-}
-.btn {
-  line-height: 1.2
-}
-.btn-lg {
-  line-height: 0.7
-}
-body {
-  /*background: #f8f8fa;*/
-}
-.det {
-  font-size: 1.7rem;
-}
diff --git a/examples/index.html b/examples/index.html
index cabbd740..53cbfa4e 100644
--- a/examples/index.html
+++ b/examples/index.html
@@ -23,32 +23,33 @@
 
   <body>
 
-    <div class="container">
+    <div class="container-fluid">
 
-      <header class="jumbotron text-center">
+      <header class="text-center">
         <h1>Image Sequencer</h1>
-        <p><h3>Select an image to start with!</h3></p>
-        <center><input type="file" id="file" value=""></center>
+        <h3>
+          <a href="https://github.com/publiclab/image-sequencer"><i class="fa fa-github"></i></a>
+        </h3>
       </header>
 
-      <section id="steps" class="row">
-      </section>
+      <div id="imageSelect">
+        <p><i>Select an image to start with!</i></p>
+        <center><input type="file" id="file" value=""></center>
+      </div>
 
-      <section id="addStep" class="jumbotron text-center">
+      <section id="steps" class="row"></section>
+
+      <section id="addStep">
         <div class="row">
-          <h4>Add Step :</h4>
-          <select style="font-family: sans-serif; height: 30px">
-            <option value="none" disabled selected>Please Select</option>
+          <select class="form-control">
+            <option value="none" disabled selected>Select a new step...</option>
           </select>
         </div>
+        <hr />
         <div class="row">
-          <div>
-            <h4>Options:</h4>
-          </div>
-          <div id="options" class="form-horizontal">
-          </div>
+          <div id="options"></div>
         </div>
-        <div class="row" style="margin: 5px">
+        <div class="row add">
           <button class="btn btn-success btn-lg" name="add">Add Step</button>
         </div>
       </section>
@@ -92,18 +93,23 @@
           onSetup: function(step) {
 
             step.ui = '\
-            <div class="row">\
-              <div>\
-                <img alt="" class="img-thumbnail"/>\
+            <div class="row step">\
+              <div class="col-md-4 details">\
+                <h3>'+step.name+'</h3>\
+                <p><i>'+(step.description || '')+'</i></p>\
               </div>\
-              <div class="details">\
-                <h2>'+step.name+'&nbsp;</h2>\
+              <div class="col-md-8">\
+                <img alt="" class="img-thumbnail"/>\
               </div>\
             </div>\
             ';
 
-            var removebutton =
-            '<button class="remove btn btn-danger">X</button>';
+            var tools =
+            '<div class="tools btn-group">\
+               <button confirm="Are you sure?" class="remove btn btn-xs btn-default">\
+                 <i class="fa fa-trash"></i>\
+               </button>\
+            </div>';
 
             step.ui = parser.parseFromString(step.ui,'text/html');
             step.ui = step.ui.querySelector('div.row');
@@ -123,9 +129,9 @@
             }
 
             if(step.name != "load-image")
-              step.ui.querySelector('div.details h2').appendChild(
-                parser.parseFromString(removebutton,'text/html')
-                  .querySelector('button')
+              step.ui.querySelector('div.details').appendChild(
+                parser.parseFromString(tools,'text/html')
+                      .querySelector('div')
               );
 
             steps.appendChild(step.ui);
@@ -166,11 +172,11 @@
           for(var input in modulesInfo[m].inputs) {
             $('#options').append(
               '<div class="row">\
-                 <div class="col-md-2">\
+                 <div class="col-md-5 labels">\
                    '+input+':\
                  </div>\
-                 <div class="col-md-2">\
-                   <input type="text" name="'+input+'" value="" placeholder="'+
+                 <div class="col-md-5">\
+                   <input class="form-control" type="text" name="'+input+'" value="" placeholder="'+
                    modulesInfo[m].inputs[input].default+'"/>\
                  </div>\
                </div>'
diff --git a/examples/replace.html b/examples/replace.html
index 867a3b5f..d6f7948d 100644
--- a/examples/replace.html
+++ b/examples/replace.html
@@ -9,7 +9,7 @@
 
     <link href="../node_modules/bootstrap/dist/css/bootstrap.min.css" rel="stylesheet">
     <link href="../node_modules/font-awesome/css/font-awesome.min.css" rel="stylesheet">
-    <link href="../dist/image-sequencer.css" rel="stylesheet">
+    <link href="demo-old.css" rel="stylesheet">
 
     <script src="../node_modules/jquery/dist/jquery.min.js"></script>
     <script src="../node_modules/bootstrap/dist/js/bootstrap.min.js"></script>
diff --git a/src/modules/Crop/info.json b/src/modules/Crop/info.json
index 20f5ad9f..19e51f34 100644
--- a/src/modules/Crop/info.json
+++ b/src/modules/Crop/info.json
@@ -1,5 +1,7 @@
 {
   "name": "Crop",
+  "description": "Crop image to given x, y, w, h",
+  "url": "https://github.com/publiclab/image-sequencer/tree/master/MODULES.md",
   "inputs": {
     "x": {
       "type": "integer",