[html-minifier.git] / dist / htmlminifier.js

/*!
 * HTMLMinifier v3.5.20 (https://kangax.github.io/html-minifier/)
 * Copyright 2010-2018 Juriy "kangax" Zaytsev
 * Licensed under the MIT license
 */

require=(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
'use strict'

exports.byteLength = byteLength
exports.toByteArray = toByteArray
exports.fromByteArray = fromByteArray

var lookup = []
var revLookup = []
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array

var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
for (var i = 0, len = code.length; i < len; ++i) {
  lookup[i] = code[i]
  revLookup[code.charCodeAt(i)] = i
}

// Support decoding URL-safe base64 strings, as Node.js does.
// See: https://en.wikipedia.org/wiki/Base64#URL_applications
revLookup['-'.charCodeAt(0)] = 62
revLookup['_'.charCodeAt(0)] = 63

function getLens (b64) {
  var len = b64.length

  if (len % 4 > 0) {
    throw new Error('Invalid string. Length must be a multiple of 4')
  }

  // Trim off extra bytes after placeholder bytes are found
  // See: https://github.com/beatgammit/base64-js/issues/42
  var validLen = b64.indexOf('=')
  if (validLen === -1) validLen = len

  var placeHoldersLen = validLen === len
    ? 0
    : 4 - (validLen % 4)

  return [validLen, placeHoldersLen]
}

// base64 is 4/3 + up to two characters of the original data
function byteLength (b64) {
  var lens = getLens(b64)
  var validLen = lens[0]
  var placeHoldersLen = lens[1]
  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}

function _byteLength (b64, validLen, placeHoldersLen) {
  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}

function toByteArray (b64) {
  var tmp
  var lens = getLens(b64)
  var validLen = lens[0]
  var placeHoldersLen = lens[1]

  var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))

  var curByte = 0

  // if there are placeholders, only get up to the last complete 4 chars
  var len = placeHoldersLen > 0
    ? validLen - 4
    : validLen

  for (var i = 0; i < len; i += 4) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 18) |
      (revLookup[b64.charCodeAt(i + 1)] << 12) |
      (revLookup[b64.charCodeAt(i + 2)] << 6) |
      revLookup[b64.charCodeAt(i + 3)]
    arr[curByte++] = (tmp >> 16) & 0xFF
    arr[curByte++] = (tmp >> 8) & 0xFF
    arr[curByte++] = tmp & 0xFF
  }

  if (placeHoldersLen === 2) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 2) |
      (revLookup[b64.charCodeAt(i + 1)] >> 4)
    arr[curByte++] = tmp & 0xFF
  }

  if (placeHoldersLen === 1) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 10) |
      (revLookup[b64.charCodeAt(i + 1)] << 4) |
      (revLookup[b64.charCodeAt(i + 2)] >> 2)
    arr[curByte++] = (tmp >> 8) & 0xFF
    arr[curByte++] = tmp & 0xFF
  }

  return arr
}

function tripletToBase64 (num) {
  return lookup[num >> 18 & 0x3F] +
    lookup[num >> 12 & 0x3F] +
    lookup[num >> 6 & 0x3F] +
    lookup[num & 0x3F]
}

function encodeChunk (uint8, start, end) {
  var tmp
  var output = []
  for (var i = start; i < end; i += 3) {
    tmp =
      ((uint8[i] << 16) & 0xFF0000) +
      ((uint8[i + 1] << 8) & 0xFF00) +
      (uint8[i + 2] & 0xFF)
    output.push(tripletToBase64(tmp))
  }
  return output.join('')
}

function fromByteArray (uint8) {
  var tmp
  var len = uint8.length
  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
  var parts = []
  var maxChunkLength = 16383 // must be multiple of 3

  // go through the array every three bytes, we'll deal with trailing stuff later
  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
    parts.push(encodeChunk(
      uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)
    ))
  }

  // pad the end with zeros, but make sure to not forget the extra bytes
  if (extraBytes === 1) {
    tmp = uint8[len - 1]
    parts.push(
      lookup[tmp >> 2] +
      lookup[(tmp << 4) & 0x3F] +
      '=='
    )
  } else if (extraBytes === 2) {
    tmp = (uint8[len - 2] << 8) + uint8[len - 1]
    parts.push(
      lookup[tmp >> 10] +
      lookup[(tmp >> 4) & 0x3F] +
      lookup[(tmp << 2) & 0x3F] +
      '='
    )
  }

  return parts.join('')
}

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

},{}],3:[function(require,module,exports){
arguments[4][2][0].apply(exports,arguments)
},{"dup":2}],4:[function(require,module,exports){
/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <https://feross.org>
 * @license  MIT
 */
/* eslint-disable no-proto */

'use strict'

var base64 = require('base64-js')
var ieee754 = require('ieee754')

exports.Buffer = Buffer
exports.SlowBuffer = SlowBuffer
exports.INSPECT_MAX_BYTES = 50

var K_MAX_LENGTH = 0x7fffffff
exports.kMaxLength = K_MAX_LENGTH

/**
 * If `Buffer.TYPED_ARRAY_SUPPORT`:
 *   === true    Use Uint8Array implementation (fastest)
 *   === false   Print warning and recommend using `buffer` v4.x which has an Object
 *               implementation (most compatible, even IE6)
 *
 * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
 * Opera 11.6+, iOS 4.2+.
 *
 * We report that the browser does not support typed arrays if the are not subclassable
 * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
 * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
 * for __proto__ and has a buggy typed array implementation.
 */
Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()

if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
    typeof console.error === 'function') {
  console.error(
    'This browser lacks typed array (Uint8Array) support which is required by ' +
    '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
  )
}

function typedArraySupport () {
  // Can typed array instances can be augmented?
  try {
    var arr = new Uint8Array(1)
    arr.__proto__ = { __proto__: Uint8Array.prototype, foo: function () { return 42 } }
    return arr.foo() === 42
  } catch (e) {
    return false
  }
}

Object.defineProperty(Buffer.prototype, 'parent', {
  enumerable: true,
  get: function () {
    if (!Buffer.isBuffer(this)) return undefined
    return this.buffer
  }
})

Object.defineProperty(Buffer.prototype, 'offset', {
  enumerable: true,
  get: function () {
    if (!Buffer.isBuffer(this)) return undefined
    return this.byteOffset
  }
})

function createBuffer (length) {
  if (length > K_MAX_LENGTH) {
    throw new RangeError('The value "' + length + '" is invalid for option "size"')
  }
  // Return an augmented `Uint8Array` instance
  var buf = new Uint8Array(length)
  buf.__proto__ = Buffer.prototype
  return buf
}

/**
 * The Buffer constructor returns instances of `Uint8Array` that have their
 * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
 * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
 * and the `Uint8Array` methods. Square bracket notation works as expected -- it
 * returns a single octet.
 *
 * The `Uint8Array` prototype remains unmodified.
 */

function Buffer (arg, encodingOrOffset, length) {
  // Common case.
  if (typeof arg === 'number') {
    if (typeof encodingOrOffset === 'string') {
      throw new TypeError(
        'The "string" argument must be of type string. Received type number'
      )
    }
    return allocUnsafe(arg)
  }
  return from(arg, encodingOrOffset, length)
}

// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
if (typeof Symbol !== 'undefined' && Symbol.species != null &&
    Buffer[Symbol.species] === Buffer) {
  Object.defineProperty(Buffer, Symbol.species, {
    value: null,
    configurable: true,
    enumerable: false,
    writable: false
  })
}

Buffer.poolSize = 8192 // not used by this implementation

function from (value, encodingOrOffset, length) {
  if (typeof value === 'string') {
    return fromString(value, encodingOrOffset)
  }

  if (ArrayBuffer.isView(value)) {
    return fromArrayLike(value)
  }

  if (value == null) {
    throw TypeError(
      'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
      'or Array-like Object. Received type ' + (typeof value)
    )
  }

  if (isInstance(value, ArrayBuffer) ||
      (value && isInstance(value.buffer, ArrayBuffer))) {
    return fromArrayBuffer(value, encodingOrOffset, length)
  }

  if (typeof value === 'number') {
    throw new TypeError(
      'The "value" argument must not be of type number. Received type number'
    )
  }

  var valueOf = value.valueOf && value.valueOf()
  if (valueOf != null && valueOf !== value) {
    return Buffer.from(valueOf, encodingOrOffset, length)
  }

  var b = fromObject(value)
  if (b) return b

  if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null &&
      typeof value[Symbol.toPrimitive] === 'function') {
    return Buffer.from(
      value[Symbol.toPrimitive]('string'), encodingOrOffset, length
    )
  }

  throw new TypeError(
    'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
    'or Array-like Object. Received type ' + (typeof value)
  )
}

/**
 * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
 * if value is a number.
 * Buffer.from(str[, encoding])
 * Buffer.from(array)
 * Buffer.from(buffer)
 * Buffer.from(arrayBuffer[, byteOffset[, length]])
 **/
Buffer.from = function (value, encodingOrOffset, length) {
  return from(value, encodingOrOffset, length)
}

// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
// https://github.com/feross/buffer/pull/148
Buffer.prototype.__proto__ = Uint8Array.prototype
Buffer.__proto__ = Uint8Array

function assertSize (size) {
  if (typeof size !== 'number') {
    throw new TypeError('"size" argument must be of type number')
  } else if (size < 0) {
    throw new RangeError('The value "' + size + '" is invalid for option "size"')
  }
}

function alloc (size, fill, encoding) {
  assertSize(size)
  if (size <= 0) {
    return createBuffer(size)
  }
  if (fill !== undefined) {
    // Only pay attention to encoding if it's a string. This
    // prevents accidentally sending in a number that would
    // be interpretted as a start offset.
    return typeof encoding === 'string'
      ? createBuffer(size).fill(fill, encoding)
      : createBuffer(size).fill(fill)
  }
  return createBuffer(size)
}

/**
 * Creates a new filled Buffer instance.
 * alloc(size[, fill[, encoding]])
 **/
Buffer.alloc = function (size, fill, encoding) {
  return alloc(size, fill, encoding)
}

function allocUnsafe (size) {
  assertSize(size)
  return createBuffer(size < 0 ? 0 : checked(size) | 0)
}

/**
 * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
 * */
Buffer.allocUnsafe = function (size) {
  return allocUnsafe(size)
}
/**
 * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
 */
Buffer.allocUnsafeSlow = function (size) {
  return allocUnsafe(size)
}

function fromString (string, encoding) {
  if (typeof encoding !== 'string' || encoding === '') {
    encoding = 'utf8'
  }

  if (!Buffer.isEncoding(encoding)) {
    throw new TypeError('Unknown encoding: ' + encoding)
  }

  var length = byteLength(string, encoding) | 0
  var buf = createBuffer(length)

  var actual = buf.write(string, encoding)

  if (actual !== length) {
    // Writing a hex string, for example, that contains invalid characters will
    // cause everything after the first invalid character to be ignored. (e.g.
    // 'abxxcd' will be treated as 'ab')
    buf = buf.slice(0, actual)
  }

  return buf
}

function fromArrayLike (array) {
  var length = array.length < 0 ? 0 : checked(array.length) | 0
  var buf = createBuffer(length)
  for (var i = 0; i < length; i += 1) {
    buf[i] = array[i] & 255
  }
  return buf
}

function fromArrayBuffer (array, byteOffset, length) {
  if (byteOffset < 0 || array.byteLength < byteOffset) {
    throw new RangeError('"offset" is outside of buffer bounds')
  }

  if (array.byteLength < byteOffset + (length || 0)) {
    throw new RangeError('"length" is outside of buffer bounds')
  }

  var buf
  if (byteOffset === undefined && length === undefined) {
    buf = new Uint8Array(array)
  } else if (length === undefined) {
    buf = new Uint8Array(array, byteOffset)
  } else {
    buf = new Uint8Array(array, byteOffset, length)
  }

  // Return an augmented `Uint8Array` instance
  buf.__proto__ = Buffer.prototype
  return buf
}

function fromObject (obj) {
  if (Buffer.isBuffer(obj)) {
    var len = checked(obj.length) | 0
    var buf = createBuffer(len)

    if (buf.length === 0) {
      return buf
    }

    obj.copy(buf, 0, 0, len)
    return buf
  }

  if (obj.length !== undefined) {
    if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
      return createBuffer(0)
    }
    return fromArrayLike(obj)
  }

  if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
    return fromArrayLike(obj.data)
  }
}

function checked (length) {
  // Note: cannot use `length < K_MAX_LENGTH` here because that fails when
  // length is NaN (which is otherwise coerced to zero.)
  if (length >= K_MAX_LENGTH) {
    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
                         'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
  }
  return length | 0
}

function SlowBuffer (length) {
  if (+length != length) { // eslint-disable-line eqeqeq
    length = 0
  }
  return Buffer.alloc(+length)
}

Buffer.isBuffer = function isBuffer (b) {
  return b != null && b._isBuffer === true &&
    b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false
}

Buffer.compare = function compare (a, b) {
  if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength)
  if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength)
  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
    throw new TypeError(
      'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array'
    )
  }

  if (a === b) return 0

  var x = a.length
  var y = b.length

  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
    if (a[i] !== b[i]) {
      x = a[i]
      y = b[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

Buffer.isEncoding = function isEncoding (encoding) {
  switch (String(encoding).toLowerCase()) {
    case 'hex':
    case 'utf8':
    case 'utf-8':
    case 'ascii':
    case 'latin1':
    case 'binary':
    case 'base64':
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      return true
    default:
      return false
  }
}

Buffer.concat = function concat (list, length) {
  if (!Array.isArray(list)) {
    throw new TypeError('"list" argument must be an Array of Buffers')
  }

  if (list.length === 0) {
    return Buffer.alloc(0)
  }

  var i
  if (length === undefined) {
    length = 0
    for (i = 0; i < list.length; ++i) {
      length += list[i].length
    }
  }

  var buffer = Buffer.allocUnsafe(length)
  var pos = 0
  for (i = 0; i < list.length; ++i) {
    var buf = list[i]
    if (isInstance(buf, Uint8Array)) {
      buf = Buffer.from(buf)
    }
    if (!Buffer.isBuffer(buf)) {
      throw new TypeError('"list" argument must be an Array of Buffers')
    }
    buf.copy(buffer, pos)
    pos += buf.length
  }
  return buffer
}

function byteLength (string, encoding) {
  if (Buffer.isBuffer(string)) {
    return string.length
  }
  if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) {
    return string.byteLength
  }
  if (typeof string !== 'string') {
    throw new TypeError(
      'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' +
      'Received type ' + typeof string
    )
  }

  var len = string.length
  var mustMatch = (arguments.length > 2 && arguments[2] === true)
  if (!mustMatch && len === 0) return 0

  // Use a for loop to avoid recursion
  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'ascii':
      case 'latin1':
      case 'binary':
        return len
      case 'utf8':
      case 'utf-8':
        return utf8ToBytes(string).length
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return len * 2
      case 'hex':
        return len >>> 1
      case 'base64':
        return base64ToBytes(string).length
      default:
        if (loweredCase) {
          return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8
        }
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}
Buffer.byteLength = byteLength

function slowToString (encoding, start, end) {
  var loweredCase = false

  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
  // property of a typed array.

  // This behaves neither like String nor Uint8Array in that we set start/end
  // to their upper/lower bounds if the value passed is out of range.
  // undefined is handled specially as per ECMA-262 6th Edition,
  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
  if (start === undefined || start < 0) {
    start = 0
  }
  // Return early if start > this.length. Done here to prevent potential uint32
  // coercion fail below.
  if (start > this.length) {
    return ''
  }

  if (end === undefined || end > this.length) {
    end = this.length
  }

  if (end <= 0) {
    return ''
  }

  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
  end >>>= 0
  start >>>= 0

  if (end <= start) {
    return ''
  }

  if (!encoding) encoding = 'utf8'

  while (true) {
    switch (encoding) {
      case 'hex':
        return hexSlice(this, start, end)

      case 'utf8':
      case 'utf-8':
        return utf8Slice(this, start, end)

      case 'ascii':
        return asciiSlice(this, start, end)

      case 'latin1':
      case 'binary':
        return latin1Slice(this, start, end)

      case 'base64':
        return base64Slice(this, start, end)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return utf16leSlice(this, start, end)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = (encoding + '').toLowerCase()
        loweredCase = true
    }
  }
}

// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
// reliably in a browserify context because there could be multiple different
// copies of the 'buffer' package in use. This method works even for Buffer
// instances that were created from another copy of the `buffer` package.
// See: https://github.com/feross/buffer/issues/154
Buffer.prototype._isBuffer = true

function swap (b, n, m) {
  var i = b[n]
  b[n] = b[m]
  b[m] = i
}

Buffer.prototype.swap16 = function swap16 () {
  var len = this.length
  if (len % 2 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 16-bits')
  }
  for (var i = 0; i < len; i += 2) {
    swap(this, i, i + 1)
  }
  return this
}

Buffer.prototype.swap32 = function swap32 () {
  var len = this.length
  if (len % 4 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 32-bits')
  }
  for (var i = 0; i < len; i += 4) {
    swap(this, i, i + 3)
    swap(this, i + 1, i + 2)
  }
  return this
}

Buffer.prototype.swap64 = function swap64 () {
  var len = this.length
  if (len % 8 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 64-bits')
  }
  for (var i = 0; i < len; i += 8) {
    swap(this, i, i + 7)
    swap(this, i + 1, i + 6)
    swap(this, i + 2, i + 5)
    swap(this, i + 3, i + 4)
  }
  return this
}

Buffer.prototype.toString = function toString () {
  var length = this.length
  if (length === 0) return ''
  if (arguments.length === 0) return utf8Slice(this, 0, length)
  return slowToString.apply(this, arguments)
}

Buffer.prototype.toLocaleString = Buffer.prototype.toString

Buffer.prototype.equals = function equals (b) {
  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
  if (this === b) return true
  return Buffer.compare(this, b) === 0
}

Buffer.prototype.inspect = function inspect () {
  var str = ''
  var max = exports.INSPECT_MAX_BYTES
  str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim()
  if (this.length > max) str += ' ... '
  return '<Buffer ' + str + '>'
}

Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
  if (isInstance(target, Uint8Array)) {
    target = Buffer.from(target, target.offset, target.byteLength)
  }
  if (!Buffer.isBuffer(target)) {
    throw new TypeError(
      'The "target" argument must be one of type Buffer or Uint8Array. ' +
      'Received type ' + (typeof target)
    )
  }

  if (start === undefined) {
    start = 0
  }
  if (end === undefined) {
    end = target ? target.length : 0
  }
  if (thisStart === undefined) {
    thisStart = 0
  }
  if (thisEnd === undefined) {
    thisEnd = this.length
  }

  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
    throw new RangeError('out of range index')
  }

  if (thisStart >= thisEnd && start >= end) {
    return 0
  }
  if (thisStart >= thisEnd) {
    return -1
  }
  if (start >= end) {
    return 1
  }

  start >>>= 0
  end >>>= 0
  thisStart >>>= 0
  thisEnd >>>= 0

  if (this === target) return 0

  var x = thisEnd - thisStart
  var y = end - start
  var len = Math.min(x, y)

  var thisCopy = this.slice(thisStart, thisEnd)
  var targetCopy = target.slice(start, end)

  for (var i = 0; i < len; ++i) {
    if (thisCopy[i] !== targetCopy[i]) {
      x = thisCopy[i]
      y = targetCopy[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
//
// Arguments:
// - buffer - a Buffer to search
// - val - a string, Buffer, or number
// - byteOffset - an index into `buffer`; will be clamped to an int32
// - encoding - an optional encoding, relevant is val is a string
// - dir - true for indexOf, false for lastIndexOf
function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
  // Empty buffer means no match
  if (buffer.length === 0) return -1

  // Normalize byteOffset
  if (typeof byteOffset === 'string') {
    encoding = byteOffset
    byteOffset = 0
  } else if (byteOffset > 0x7fffffff) {
    byteOffset = 0x7fffffff
  } else if (byteOffset < -0x80000000) {
    byteOffset = -0x80000000
  }
  byteOffset = +byteOffset // Coerce to Number.
  if (numberIsNaN(byteOffset)) {
    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
    byteOffset = dir ? 0 : (buffer.length - 1)
  }

  // Normalize byteOffset: negative offsets start from the end of the buffer
  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
  if (byteOffset >= buffer.length) {
    if (dir) return -1
    else byteOffset = buffer.length - 1
  } else if (byteOffset < 0) {
    if (dir) byteOffset = 0
    else return -1
  }

  // Normalize val
  if (typeof val === 'string') {
    val = Buffer.from(val, encoding)
  }

  // Finally, search either indexOf (if dir is true) or lastIndexOf
  if (Buffer.isBuffer(val)) {
    // Special case: looking for empty string/buffer always fails
    if (val.length === 0) {
      return -1
    }
    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
  } else if (typeof val === 'number') {
    val = val & 0xFF // Search for a byte value [0-255]
    if (typeof Uint8Array.prototype.indexOf === 'function') {
      if (dir) {
        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
      } else {
        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
      }
    }
    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
  }

  throw new TypeError('val must be string, number or Buffer')
}

function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
  var indexSize = 1
  var arrLength = arr.length
  var valLength = val.length

  if (encoding !== undefined) {
    encoding = String(encoding).toLowerCase()
    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
        encoding === 'utf16le' || encoding === 'utf-16le') {
      if (arr.length < 2 || val.length < 2) {
        return -1
      }
      indexSize = 2
      arrLength /= 2
      valLength /= 2
      byteOffset /= 2
    }
  }

  function read (buf, i) {
    if (indexSize === 1) {
      return buf[i]
    } else {
      return buf.readUInt16BE(i * indexSize)
    }
  }

  var i
  if (dir) {
    var foundIndex = -1
    for (i = byteOffset; i < arrLength; i++) {
      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
        if (foundIndex === -1) foundIndex = i
        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
      } else {
        if (foundIndex !== -1) i -= i - foundIndex
        foundIndex = -1
      }
    }
  } else {
    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
    for (i = byteOffset; i >= 0; i--) {
      var found = true
      for (var j = 0; j < valLength; j++) {
        if (read(arr, i + j) !== read(val, j)) {
          found = false
          break
        }
      }
      if (found) return i
    }
  }

  return -1
}

Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
  return this.indexOf(val, byteOffset, encoding) !== -1
}

Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
}

Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
}

function hexWrite (buf, string, offset, length) {
  offset = Number(offset) || 0
  var remaining = buf.length - offset
  if (!length) {
    length = remaining
  } else {
    length = Number(length)
    if (length > remaining) {
      length = remaining
    }
  }

  var strLen = string.length

  if (length > strLen / 2) {
    length = strLen / 2
  }
  for (var i = 0; i < length; ++i) {
    var parsed = parseInt(string.substr(i * 2, 2), 16)
    if (numberIsNaN(parsed)) return i
    buf[offset + i] = parsed
  }
  return i
}

function utf8Write (buf, string, offset, length) {
  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
}

function asciiWrite (buf, string, offset, length) {
  return blitBuffer(asciiToBytes(string), buf, offset, length)
}

function latin1Write (buf, string, offset, length) {
  return asciiWrite(buf, string, offset, length)
}

function base64Write (buf, string, offset, length) {
  return blitBuffer(base64ToBytes(string), buf, offset, length)
}

function ucs2Write (buf, string, offset, length) {
  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
}

Buffer.prototype.write = function write (string, offset, length, encoding) {
  // Buffer#write(string)
  if (offset === undefined) {
    encoding = 'utf8'
    length = this.length
    offset = 0
  // Buffer#write(string, encoding)
  } else if (length === undefined && typeof offset === 'string') {
    encoding = offset
    length = this.length
    offset = 0
  // Buffer#write(string, offset[, length][, encoding])
  } else if (isFinite(offset)) {
    offset = offset >>> 0
    if (isFinite(length)) {
      length = length >>> 0
      if (encoding === undefined) encoding = 'utf8'
    } else {
      encoding = length
      length = undefined
    }
  } else {
    throw new Error(
      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
    )
  }

  var remaining = this.length - offset
  if (length === undefined || length > remaining) length = remaining

  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
    throw new RangeError('Attempt to write outside buffer bounds')
  }

  if (!encoding) encoding = 'utf8'

  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'hex':
        return hexWrite(this, string, offset, length)

      case 'utf8':
      case 'utf-8':
        return utf8Write(this, string, offset, length)

      case 'ascii':
        return asciiWrite(this, string, offset, length)

      case 'latin1':
      case 'binary':
        return latin1Write(this, string, offset, length)

      case 'base64':
        // Warning: maxLength not taken into account in base64Write
        return base64Write(this, string, offset, length)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return ucs2Write(this, string, offset, length)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}

Buffer.prototype.toJSON = function toJSON () {
  return {
    type: 'Buffer',
    data: Array.prototype.slice.call(this._arr || this, 0)
  }
}

function base64Slice (buf, start, end) {
  if (start === 0 && end === buf.length) {
    return base64.fromByteArray(buf)
  } else {
    return base64.fromByteArray(buf.slice(start, end))
  }
}

function utf8Slice (buf, start, end) {
  end = Math.min(buf.length, end)
  var res = []

  var i = start
  while (i < end) {
    var firstByte = buf[i]
    var codePoint = null
    var bytesPerSequence = (firstByte > 0xEF) ? 4
      : (firstByte > 0xDF) ? 3
        : (firstByte > 0xBF) ? 2
          : 1

    if (i + bytesPerSequence <= end) {
      var secondByte, thirdByte, fourthByte, tempCodePoint

      switch (bytesPerSequence) {
        case 1:
          if (firstByte < 0x80) {
            codePoint = firstByte
          }
          break
        case 2:
          secondByte = buf[i + 1]
          if ((secondByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
            if (tempCodePoint > 0x7F) {
              codePoint = tempCodePoint
            }
          }
          break
        case 3:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
              codePoint = tempCodePoint
            }
          }
          break
        case 4:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          fourthByte = buf[i + 3]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
              codePoint = tempCodePoint
            }
          }
      }
    }

    if (codePoint === null) {
      // we did not generate a valid codePoint so insert a
      // replacement char (U+FFFD) and advance only 1 byte
      codePoint = 0xFFFD
      bytesPerSequence = 1
    } else if (codePoint > 0xFFFF) {
      // encode to utf16 (surrogate pair dance)
      codePoint -= 0x10000
      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
      codePoint = 0xDC00 | codePoint & 0x3FF
    }

    res.push(codePoint)
    i += bytesPerSequence
  }

  return decodeCodePointsArray(res)
}

// Based on http://stackoverflow.com/a/22747272/680742, the browser with
// the lowest limit is Chrome, with 0x10000 args.
// We go 1 magnitude less, for safety
var MAX_ARGUMENTS_LENGTH = 0x1000

function decodeCodePointsArray (codePoints) {
  var len = codePoints.length
  if (len <= MAX_ARGUMENTS_LENGTH) {
    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
  }

  // Decode in chunks to avoid "call stack size exceeded".
  var res = ''
  var i = 0
  while (i < len) {
    res += String.fromCharCode.apply(
      String,
      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
    )
  }
  return res
}

function asciiSlice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i] & 0x7F)
  }
  return ret
}

function latin1Slice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i])
  }
  return ret
}

function hexSlice (buf, start, end) {
  var len = buf.length

  if (!start || start < 0) start = 0
  if (!end || end < 0 || end > len) end = len

  var out = ''
  for (var i = start; i < end; ++i) {
    out += toHex(buf[i])
  }
  return out
}

function utf16leSlice (buf, start, end) {
  var bytes = buf.slice(start, end)
  var res = ''
  for (var i = 0; i < bytes.length; i += 2) {
    res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
  }
  return res
}

Buffer.prototype.slice = function slice (start, end) {
  var len = this.length
  start = ~~start
  end = end === undefined ? len : ~~end

  if (start < 0) {
    start += len
    if (start < 0) start = 0
  } else if (start > len) {
    start = len
  }

  if (end < 0) {
    end += len
    if (end < 0) end = 0
  } else if (end > len) {
    end = len
  }

  if (end < start) end = start

  var newBuf = this.subarray(start, end)
  // Return an augmented `Uint8Array` instance
  newBuf.__proto__ = Buffer.prototype
  return newBuf
}

/*
 * Need to make sure that buffer isn't trying to write out of bounds.
 */
function checkOffset (offset, ext, length) {
  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
}

Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }

  return val
}

Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    checkOffset(offset, byteLength, this.length)
  }

  var val = this[offset + --byteLength]
  var mul = 1
  while (byteLength > 0 && (mul *= 0x100)) {
    val += this[offset + --byteLength] * mul
  }

  return val
}

Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 1, this.length)
  return this[offset]
}

Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  return this[offset] | (this[offset + 1] << 8)
}

Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  return (this[offset] << 8) | this[offset + 1]
}

Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return ((this[offset]) |
      (this[offset + 1] << 8) |
      (this[offset + 2] << 16)) +
      (this[offset + 3] * 0x1000000)
}

Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] * 0x1000000) +
    ((this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    this[offset + 3])
}

Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var i = byteLength
  var mul = 1
  var val = this[offset + --i]
  while (i > 0 && (mul *= 0x100)) {
    val += this[offset + --i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 1, this.length)
  if (!(this[offset] & 0x80)) return (this[offset])
  return ((0xff - this[offset] + 1) * -1)
}

Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset] | (this[offset + 1] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset + 1] | (this[offset] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset]) |
    (this[offset + 1] << 8) |
    (this[offset + 2] << 16) |
    (this[offset + 3] << 24)
}

Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] << 24) |
    (this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    (this[offset + 3])
}

Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, true, 23, 4)
}

Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, false, 23, 4)
}

Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, true, 52, 8)
}

Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, false, 52, 8)
}

function checkInt (buf, value, offset, ext, max, min) {
  if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
  if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
  if (offset + ext > buf.length) throw new RangeError('Index out of range')
}

Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    var maxBytes = Math.pow(2, 8 * byteLength) - 1
    checkInt(this, value, offset, byteLength, maxBytes, 0)
  }

  var mul = 1
  var i = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    var maxBytes = Math.pow(2, 8 * byteLength) - 1
    checkInt(this, value, offset, byteLength, maxBytes, 0)
  }

  var i = byteLength - 1
  var mul = 1
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
  this[offset] = (value & 0xff)
  return offset + 1
}

Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  return offset + 2
}

Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  this[offset] = (value >>> 8)
  this[offset + 1] = (value & 0xff)
  return offset + 2
}

Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  this[offset + 3] = (value >>> 24)
  this[offset + 2] = (value >>> 16)
  this[offset + 1] = (value >>> 8)
  this[offset] = (value & 0xff)
  return offset + 4
}

Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  this[offset] = (value >>> 24)
  this[offset + 1] = (value >>> 16)
  this[offset + 2] = (value >>> 8)
  this[offset + 3] = (value & 0xff)
  return offset + 4
}

Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    var limit = Math.pow(2, (8 * byteLength) - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = 0
  var mul = 1
  var sub = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
      sub = 1
    }
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    var limit = Math.pow(2, (8 * byteLength) - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = byteLength - 1
  var mul = 1
  var sub = 0
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
      sub = 1
    }
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
  if (value < 0) value = 0xff + value + 1
  this[offset] = (value & 0xff)
  return offset + 1
}

Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  return offset + 2
}

Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  this[offset] = (value >>> 8)
  this[offset + 1] = (value & 0xff)
  return offset + 2
}

Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  this[offset + 2] = (value >>> 16)
  this[offset + 3] = (value >>> 24)
  return offset + 4
}

Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (value < 0) value = 0xffffffff + value + 1
  this[offset] = (value >>> 24)
  this[offset + 1] = (value >>> 16)
  this[offset + 2] = (value >>> 8)
  this[offset + 3] = (value & 0xff)
  return offset + 4
}

function checkIEEE754 (buf, value, offset, ext, max, min) {
  if (offset + ext > buf.length) throw new RangeError('Index out of range')
  if (offset < 0) throw new RangeError('Index out of range')
}

function writeFloat (buf, value, offset, littleEndian, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
  }
  ieee754.write(buf, value, offset, littleEndian, 23, 4)
  return offset + 4
}

Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
  return writeFloat(this, value, offset, true, noAssert)
}

Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
  return writeFloat(this, value, offset, false, noAssert)
}

function writeDouble (buf, value, offset, littleEndian, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
  }
  ieee754.write(buf, value, offset, littleEndian, 52, 8)
  return offset + 8
}

Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
  return writeDouble(this, value, offset, true, noAssert)
}

Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
  return writeDouble(this, value, offset, false, noAssert)
}

// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function copy (target, targetStart, start, end) {
  if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer')
  if (!start) start = 0
  if (!end && end !== 0) end = this.length
  if (targetStart >= target.length) targetStart = target.length
  if (!targetStart) targetStart = 0
  if (end > 0 && end < start) end = start

  // Copy 0 bytes; we're done
  if (end === start) return 0
  if (target.length === 0 || this.length === 0) return 0

  // Fatal error conditions
  if (targetStart < 0) {
    throw new RangeError('targetStart out of bounds')
  }
  if (start < 0 || start >= this.length) throw new RangeError('Index out of range')
  if (end < 0) throw new RangeError('sourceEnd out of bounds')

  // Are we oob?
  if (end > this.length) end = this.length
  if (target.length - targetStart < end - start) {
    end = target.length - targetStart + start
  }

  var len = end - start

  if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') {
    // Use built-in when available, missing from IE11
    this.copyWithin(targetStart, start, end)
  } else if (this === target && start < targetStart && targetStart < end) {
    // descending copy from end
    for (var i = len - 1; i >= 0; --i) {
      target[i + targetStart] = this[i + start]
    }
  } else {
    Uint8Array.prototype.set.call(
      target,
      this.subarray(start, end),
      targetStart
    )
  }

  return len
}

// Usage:
//    buffer.fill(number[, offset[, end]])
//    buffer.fill(buffer[, offset[, end]])
//    buffer.fill(string[, offset[, end]][, encoding])
Buffer.prototype.fill = function fill (val, start, end, encoding) {
  // Handle string cases:
  if (typeof val === 'string') {
    if (typeof start === 'string') {
      encoding = start
      start = 0
      end = this.length
    } else if (typeof end === 'string') {
      encoding = end
      end = this.length
    }
    if (encoding !== undefined && typeof encoding !== 'string') {
      throw new TypeError('encoding must be a string')
    }
    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
      throw new TypeError('Unknown encoding: ' + encoding)
    }
    if (val.length === 1) {
      var code = val.charCodeAt(0)
      if ((encoding === 'utf8' && code < 128) ||
          encoding === 'latin1') {
        // Fast path: If `val` fits into a single byte, use that numeric value.
        val = code
      }
    }
  } else if (typeof val === 'number') {
    val = val & 255
  }

  // Invalid ranges are not set to a default, so can range check early.
  if (start < 0 || this.length < start || this.length < end) {
    throw new RangeError('Out of range index')
  }

  if (end <= start) {
    return this
  }

  start = start >>> 0
  end = end === undefined ? this.length : end >>> 0

  if (!val) val = 0

  var i
  if (typeof val === 'number') {
    for (i = start; i < end; ++i) {
      this[i] = val
    }
  } else {
    var bytes = Buffer.isBuffer(val)
      ? val
      : Buffer.from(val, encoding)
    var len = bytes.length
    if (len === 0) {
      throw new TypeError('The value "' + val +
        '" is invalid for argument "value"')
    }
    for (i = 0; i < end - start; ++i) {
      this[i + start] = bytes[i % len]
    }
  }

  return this
}

// HELPER FUNCTIONS
// ================

var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g

function base64clean (str) {
  // Node takes equal signs as end of the Base64 encoding
  str = str.split('=')[0]
  // Node strips out invalid characters like \n and \t from the string, base64-js does not
  str = str.trim().replace(INVALID_BASE64_RE, '')
  // Node converts strings with length < 2 to ''
  if (str.length < 2) return ''
  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
  while (str.length % 4 !== 0) {
    str = str + '='
  }
  return str
}

function toHex (n) {
  if (n < 16) return '0' + n.toString(16)
  return n.toString(16)
}

function utf8ToBytes (string, units) {
  units = units || Infinity
  var codePoint
  var length = string.length
  var leadSurrogate = null
  var bytes = []

  for (var i = 0; i < length; ++i) {
    codePoint = string.charCodeAt(i)

    // is surrogate component
    if (codePoint > 0xD7FF && codePoint < 0xE000) {
      // last char was a lead
      if (!leadSurrogate) {
        // no lead yet
        if (codePoint > 0xDBFF) {
          // unexpected trail
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        } else if (i + 1 === length) {
          // unpaired lead
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        }

        // valid lead
        leadSurrogate = codePoint

        continue
      }

      // 2 leads in a row
      if (codePoint < 0xDC00) {
        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
        leadSurrogate = codePoint
        continue
      }

      // valid surrogate pair
      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
    } else if (leadSurrogate) {
      // valid bmp char, but last char was a lead
      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
    }

    leadSurrogate = null

    // encode utf8
    if (codePoint < 0x80) {
      if ((units -= 1) < 0) break
      bytes.push(codePoint)
    } else if (codePoint < 0x800) {
      if ((units -= 2) < 0) break
      bytes.push(
        codePoint >> 0x6 | 0xC0,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x10000) {
      if ((units -= 3) < 0) break
      bytes.push(
        codePoint >> 0xC | 0xE0,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x110000) {
      if ((units -= 4) < 0) break
      bytes.push(
        codePoint >> 0x12 | 0xF0,
        codePoint >> 0xC & 0x3F | 0x80,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else {
      throw new Error('Invalid code point')
    }
  }

  return bytes
}

function asciiToBytes (str) {
  var byteArray = []
  for (var i = 0; i < str.length; ++i) {
    // Node's code seems to be doing this and not & 0x7F..
    byteArray.push(str.charCodeAt(i) & 0xFF)
  }
  return byteArray
}

function utf16leToBytes (str, units) {
  var c, hi, lo
  var byteArray = []
  for (var i = 0; i < str.length; ++i) {
    if ((units -= 2) < 0) break

    c = str.charCodeAt(i)
    hi = c >> 8
    lo = c % 256
    byteArray.push(lo)
    byteArray.push(hi)
  }

  return byteArray
}

function base64ToBytes (str) {
  return base64.toByteArray(base64clean(str))
}

function blitBuffer (src, dst, offset, length) {
  for (var i = 0; i < length; ++i) {
    if ((i + offset >= dst.length) || (i >= src.length)) break
    dst[i + offset] = src[i]
  }
  return i
}

// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass
// the `instanceof` check but they should be treated as of that type.
// See: https://github.com/feross/buffer/issues/166
function isInstance (obj, type) {
  return obj instanceof type ||
    (obj != null && obj.constructor != null && obj.constructor.name != null &&
      obj.constructor.name === type.name)
}
function numberIsNaN (obj) {
  // For IE11 support
  return obj !== obj // eslint-disable-line no-self-compare
}

},{"base64-js":1,"ieee754":105}],5:[function(require,module,exports){
module.exports = {
  "100": "Continue",
  "101": "Switching Protocols",
  "102": "Processing",
  "200": "OK",
  "201": "Created",
  "202": "Accepted",
  "203": "Non-Authoritative Information",
  "204": "No Content",
  "205": "Reset Content",
  "206": "Partial Content",
  "207": "Multi-Status",
  "208": "Already Reported",
  "226": "IM Used",
  "300": "Multiple Choices",
  "301": "Moved Permanently",
  "302": "Found",
  "303": "See Other",
  "304": "Not Modified",
  "305": "Use Proxy",
  "307": "Temporary Redirect",
  "308": "Permanent Redirect",
  "400": "Bad Request",
  "401": "Unauthorized",
  "402": "Payment Required",
  "403": "Forbidden",
  "404": "Not Found",
  "405": "Method Not Allowed",
  "406": "Not Acceptable",
  "407": "Proxy Authentication Required",
  "408": "Request Timeout",
  "409": "Conflict",
  "410": "Gone",
  "411": "Length Required",
  "412": "Precondition Failed",
  "413": "Payload Too Large",
  "414": "URI Too Long",
  "415": "Unsupported Media Type",
  "416": "Range Not Satisfiable",
  "417": "Expectation Failed",
  "418": "I'm a teapot",
  "421": "Misdirected Request",
  "422": "Unprocessable Entity",
  "423": "Locked",
  "424": "Failed Dependency",
  "425": "Unordered Collection",
  "426": "Upgrade Required",
  "428": "Precondition Required",
  "429": "Too Many Requests",
  "431": "Request Header Fields Too Large",
  "451": "Unavailable For Legal Reasons",
  "500": "Internal Server Error",
  "501": "Not Implemented",
  "502": "Bad Gateway",
  "503": "Service Unavailable",
  "504": "Gateway Timeout",
  "505": "HTTP Version Not Supported",
  "506": "Variant Also Negotiates",
  "507": "Insufficient Storage",
  "508": "Loop Detected",
  "509": "Bandwidth Limit Exceeded",
  "510": "Not Extended",
  "511": "Network Authentication Required"
}

},{}],6:[function(require,module,exports){
module.exports = require('./lib/clean');

},{"./lib/clean":7}],7:[function(require,module,exports){
(function (process){
/**
 * Clean-css - https://github.com/jakubpawlowicz/clean-css
 * Released under the terms of MIT license
 *
 * Copyright (C) 2017 JakubPawlowicz.com
 */

var level0Optimize = require('./optimizer/level-0/optimize');
var level1Optimize = require('./optimizer/level-1/optimize');
var level2Optimize = require('./optimizer/level-2/optimize');
var validator = require('./optimizer/validator');

var compatibilityFrom = require('./options/compatibility');
var fetchFrom = require('./options/fetch');
var formatFrom = require('./options/format').formatFrom;
var inlineFrom = require('./options/inline');
var inlineRequestFrom = require('./options/inline-request');
var inlineTimeoutFrom = require('./options/inline-timeout');
var OptimizationLevel = require('./options/optimization-level').OptimizationLevel;
var optimizationLevelFrom = require('./options/optimization-level').optimizationLevelFrom;
var rebaseFrom = require('./options/rebase');
var rebaseToFrom = require('./options/rebase-to');

var inputSourceMapTracker = require('./reader/input-source-map-tracker');
var readSources = require('./reader/read-sources');

var serializeStyles = require('./writer/simple');
var serializeStylesAndSourceMap = require('./writer/source-maps');

var CleanCSS = module.exports = function CleanCSS(options) {
  options = options || {};

  this.options = {
    compatibility: compatibilityFrom(options.compatibility),
    fetch: fetchFrom(options.fetch),
    format: formatFrom(options.format),
    inline: inlineFrom(options.inline),
    inlineRequest: inlineRequestFrom(options.inlineRequest),
    inlineTimeout: inlineTimeoutFrom(options.inlineTimeout),
    level: optimizationLevelFrom(options.level),
    rebase: rebaseFrom(options.rebase),
    rebaseTo: rebaseToFrom(options.rebaseTo),
    returnPromise: !!options.returnPromise,
    sourceMap: !!options.sourceMap,
    sourceMapInlineSources: !!options.sourceMapInlineSources
  };
};


// for compatibility with optimize-css-assets-webpack-plugin
CleanCSS.process = function (input, opts) {
  var cleanCss;
  var optsTo = opts.to;

  delete opts.to;
  cleanCss = new CleanCSS(Object.assign({ returnPromise: true, rebaseTo: optsTo }, opts));

  return cleanCss.minify(input)
    .then(function(output) {
      return { css: output.styles };
    });
};


CleanCSS.prototype.minify = function (input, maybeSourceMap, maybeCallback) {
  var options = this.options;

  if (options.returnPromise) {
    return new Promise(function (resolve, reject) {
      minify(input, options, maybeSourceMap, function (errors, output) {
        return errors ?
          reject(errors) :
          resolve(output);
      });
    });
  } else {
    return minify(input, options, maybeSourceMap, maybeCallback);
  }
};

function minify(input, options, maybeSourceMap, maybeCallback) {
  var sourceMap = typeof maybeSourceMap != 'function' ?
    maybeSourceMap :
    null;
  var callback = typeof maybeCallback == 'function' ?
    maybeCallback :
    (typeof maybeSourceMap == 'function' ? maybeSourceMap : null);
  var context = {
    stats: {
      efficiency: 0,
      minifiedSize: 0,
      originalSize: 0,
      startedAt: Date.now(),
      timeSpent: 0
    },
    cache: {
      specificity: {}
    },
    errors: [],
    inlinedStylesheets: [],
    inputSourceMapTracker: inputSourceMapTracker(),
    localOnly: !callback,
    options: options,
    source: null,
    sourcesContent: {},
    validator: validator(options.compatibility),
    warnings: []
  };

  if (sourceMap) {
    context.inputSourceMapTracker.track(undefined, sourceMap);
  }

  return runner(context.localOnly)(function () {
    return readSources(input, context, function (tokens) {
      var serialize = context.options.sourceMap ?
        serializeStylesAndSourceMap :
        serializeStyles;

      var optimizedTokens = optimize(tokens, context);
      var optimizedStyles = serialize(optimizedTokens, context);
      var output = withMetadata(optimizedStyles, context);

      return callback ?
        callback(context.errors.length > 0 ? context.errors : null, output) :
        output;
    });
  });
}

function runner(localOnly) {
  // to always execute code asynchronously when a callback is given
  // more at blog.izs.me/post/59142742143/designing-apis-for-asynchrony
  return localOnly ?
    function (callback) { return callback(); } :
    process.nextTick;
}

function optimize(tokens, context) {
  var optimized;

  optimized = level0Optimize(tokens, context);
  optimized = OptimizationLevel.One in context.options.level ?
    level1Optimize(tokens, context) :
    tokens;
  optimized = OptimizationLevel.Two in context.options.level ?
    level2Optimize(tokens, context, true) :
    optimized;

  return optimized;
}

function withMetadata(output, context) {
  output.stats = calculateStatsFrom(output.styles, context);
  output.errors = context.errors;
  output.inlinedStylesheets = context.inlinedStylesheets;
  output.warnings = context.warnings;

  return output;
}

function calculateStatsFrom(styles, context) {
  var finishedAt = Date.now();
  var timeSpent = finishedAt - context.stats.startedAt;

  delete context.stats.startedAt;
  context.stats.timeSpent = timeSpent;
  context.stats.efficiency = 1 - styles.length / context.stats.originalSize;
  context.stats.minifiedSize = styles.length;

  return context.stats;
}

}).call(this,require('_process'))
},{"./optimizer/level-0/optimize":9,"./optimizer/level-1/optimize":10,"./optimizer/level-2/optimize":29,"./optimizer/validator":57,"./options/compatibility":59,"./options/fetch":60,"./options/format":61,"./options/inline":64,"./options/inline-request":62,"./options/inline-timeout":63,"./options/optimization-level":65,"./options/rebase":67,"./options/rebase-to":66,"./reader/input-source-map-tracker":71,"./reader/read-sources":77,"./writer/simple":99,"./writer/source-maps":100,"_process":112}],8:[function(require,module,exports){
var Hack = {
  ASTERISK: 'asterisk',
  BANG: 'bang',
  BACKSLASH: 'backslash',
  UNDERSCORE: 'underscore'
};

module.exports = Hack;

},{}],9:[function(require,module,exports){
function level0Optimize(tokens) {
  // noop as level 0 means no optimizations!
  return tokens;
}

module.exports = level0Optimize;

},{}],10:[function(require,module,exports){
var shortenHex = require('./shorten-hex');
var shortenHsl = require('./shorten-hsl');
var shortenRgb = require('./shorten-rgb');
var sortSelectors = require('./sort-selectors');
var tidyRules = require('./tidy-rules');
var tidyBlock = require('./tidy-block');
var tidyAtRule = require('./tidy-at-rule');

var Hack = require('../hack');
var removeUnused = require('../remove-unused');
var restoreFromOptimizing = require('../restore-from-optimizing');
var wrapForOptimizing = require('../wrap-for-optimizing').all;

var OptimizationLevel = require('../../options/optimization-level').OptimizationLevel;

var Token = require('../../tokenizer/token');
var Marker = require('../../tokenizer/marker');

var formatPosition = require('../../utils/format-position');
var split = require('../../utils/split');

var serializeRules = require('../../writer/one-time').rules;

var IgnoreProperty = 'ignore-property';

var CHARSET_TOKEN = '@charset';
var CHARSET_REGEXP = new RegExp('^' + CHARSET_TOKEN, 'i');

var DEFAULT_ROUNDING_PRECISION = require('../../options/rounding-precision').DEFAULT;

var WHOLE_PIXEL_VALUE = /(?:^|\s|\()(-?\d+)px/;
var TIME_VALUE = /^(\-?[\d\.]+)(m?s)$/;

var HEX_VALUE_PATTERN = /[0-9a-f]/i;
var PROPERTY_NAME_PATTERN = /^(?:\-chrome\-|\-[\w\-]+\w|\w[\w\-]+\w|\-\-\S+)$/;
var IMPORT_PREFIX_PATTERN = /^@import/i;
var QUOTED_PATTERN = /^('.*'|".*")$/;
var QUOTED_BUT_SAFE_PATTERN = /^['"][a-zA-Z][a-zA-Z\d\-_]+['"]$/;
var URL_PREFIX_PATTERN = /^url\(/i;
var VARIABLE_NAME_PATTERN = /^--\S+$/;

function isNegative(value) {
  return value && value[1][0] == '-' && parseFloat(value[1]) < 0;
}

function isQuoted(value) {
  return QUOTED_PATTERN.test(value);
}

function isUrl(value) {
  return URL_PREFIX_PATTERN.test(value);
}

function normalizeUrl(value) {
  return value
    .replace(URL_PREFIX_PATTERN, 'url(')
    .replace(/\\?\n|\\?\r\n/g, '');
}

function optimizeBackground(property) {
  var values = property.value;

  if (values.length == 1 && values[0][1] == 'none') {
    values[0][1] = '0 0';
  }

  if (values.length == 1 && values[0][1] == 'transparent') {
    values[0][1] = '0 0';
  }
}

function optimizeBorderRadius(property) {
  var values = property.value;
  var spliceAt;

  if (values.length == 3 && values[1][1] == '/' && values[0][1] == values[2][1]) {
    spliceAt = 1;
  } else if (values.length == 5 && values[2][1] == '/' && values[0][1] == values[3][1] && values[1][1] == values[4][1]) {
    spliceAt = 2;
  } else if (values.length == 7 && values[3][1] == '/' && values[0][1] == values[4][1] && values[1][1] == values[5][1] && values[2][1] == values[6][1]) {
    spliceAt = 3;
  } else if (values.length == 9 && values[4][1] == '/' && values[0][1] == values[5][1] && values[1][1] == values[6][1] && values[2][1] == values[7][1] && values[3][1] == values[8][1]) {
    spliceAt = 4;
  }

  if (spliceAt) {
    property.value.splice(spliceAt);
    property.dirty = true;
  }
}

function optimizeColors(name, value, compatibility) {
  if (value.indexOf('#') === -1 && value.indexOf('rgb') == -1 && value.indexOf('hsl') == -1) {
    return shortenHex(value);
  }

  value = value
    .replace(/rgb\((\-?\d+),(\-?\d+),(\-?\d+)\)/g, function (match, red, green, blue) {
      return shortenRgb(red, green, blue);
    })
    .replace(/hsl\((-?\d+),(-?\d+)%?,(-?\d+)%?\)/g, function (match, hue, saturation, lightness) {
      return shortenHsl(hue, saturation, lightness);
    })
    .replace(/(^|[^='"])#([0-9a-f]{6})/gi, function (match, prefix, color, at, inputValue) {
      var suffix = inputValue[at + match.length];

      if (suffix && HEX_VALUE_PATTERN.test(suffix)) {
        return match;
      } else if (color[0] == color[1] && color[2] == color[3] && color[4] == color[5]) {
        return (prefix + '#' + color[0] + color[2] + color[4]).toLowerCase();
      } else {
        return (prefix + '#' + color).toLowerCase();
      }
    })
    .replace(/(^|[^='"])#([0-9a-f]{3})/gi, function (match, prefix, color) {
      return prefix + '#' + color.toLowerCase();
    })
    .replace(/(rgb|rgba|hsl|hsla)\(([^\)]+)\)/g, function (match, colorFunction, colorDef) {
      var tokens = colorDef.split(',');
      var applies = (colorFunction == 'hsl' && tokens.length == 3) ||
        (colorFunction == 'hsla' && tokens.length == 4) ||
        (colorFunction == 'rgb' && tokens.length == 3 && colorDef.indexOf('%') > 0) ||
        (colorFunction == 'rgba' && tokens.length == 4 && colorDef.indexOf('%') > 0);

      if (!applies) {
        return match;
      }

      if (tokens[1].indexOf('%') == -1) {
        tokens[1] += '%';
      }

      if (tokens[2].indexOf('%') == -1) {
        tokens[2] += '%';
      }

      return colorFunction + '(' + tokens.join(',') + ')';
    });

  if (compatibility.colors.opacity && name.indexOf('background') == -1) {
    value = value.replace(/(?:rgba|hsla)\(0,0%?,0%?,0\)/g, function (match) {
      if (split(value, ',').pop().indexOf('gradient(') > -1) {
        return match;
      }

      return 'transparent';
    });
  }

  return shortenHex(value);
}

function optimizeFilter(property) {
  if (property.value.length == 1) {
    property.value[0][1] = property.value[0][1].replace(/progid:DXImageTransform\.Microsoft\.(Alpha|Chroma)(\W)/, function (match, filter, suffix) {
      return filter.toLowerCase() + suffix;
    });
  }

  property.value[0][1] = property.value[0][1]
    .replace(/,(\S)/g, ', $1')
    .replace(/ ?= ?/g, '=');
}

function optimizeFontWeight(property, atIndex) {
  var value = property.value[atIndex][1];

  if (value == 'normal') {
    value = '400';
  } else if (value == 'bold') {
    value = '700';
  }

  property.value[atIndex][1] = value;
}

function optimizeMultipleZeros(property) {
  var values = property.value;
  var spliceAt;

  if (values.length == 4 && values[0][1] === '0' && values[1][1] === '0' && values[2][1] === '0' && values[3][1] === '0') {
    if (property.name.indexOf('box-shadow') > -1) {
      spliceAt = 2;
    } else {
      spliceAt = 1;
    }
  }

  if (spliceAt) {
    property.value.splice(spliceAt);
    property.dirty = true;
  }
}

function optimizeOutline(property) {
  var values = property.value;

  if (values.length == 1 && values[0][1] == 'none') {
    values[0][1] = '0';
  }
}

function optimizePixelLengths(_, value, compatibility) {
  if (!WHOLE_PIXEL_VALUE.test(value)) {
    return value;
  }

  return value.replace(WHOLE_PIXEL_VALUE, function (match, val) {
    var newValue;
    var intVal = parseInt(val);

    if (intVal === 0) {
      return match;
    }

    if (compatibility.properties.shorterLengthUnits && compatibility.units.pt && intVal * 3 % 4 === 0) {
      newValue = intVal * 3 / 4 + 'pt';
    }

    if (compatibility.properties.shorterLengthUnits && compatibility.units.pc && intVal % 16 === 0) {
      newValue = intVal / 16 + 'pc';
    }

    if (compatibility.properties.shorterLengthUnits && compatibility.units.in && intVal % 96 === 0) {
      newValue = intVal / 96 + 'in';
    }

    if (newValue) {
      newValue = match.substring(0, match.indexOf(val)) + newValue;
    }

    return newValue && newValue.length < match.length ? newValue : match;
  });
}

function optimizePrecision(_, value, precisionOptions) {
  if (!precisionOptions.enabled || value.indexOf('.') === -1) {
    return value;
  }

  return value
    .replace(precisionOptions.decimalPointMatcher, '$1$2$3')
    .replace(precisionOptions.zeroMatcher, function (match, integerPart, fractionPart, unit) {
      var multiplier = precisionOptions.units[unit].multiplier;
      var parsedInteger = parseInt(integerPart);
      var integer = isNaN(parsedInteger) ? 0 : parsedInteger;
      var fraction = parseFloat(fractionPart);

      return Math.round((integer + fraction) * multiplier) / multiplier + unit;
    });
}

function optimizeTimeUnits(_, value) {
  if (!TIME_VALUE.test(value))
    return value;

  return value.replace(TIME_VALUE, function (match, val, unit) {
    var newValue;

    if (unit == 'ms') {
      newValue = parseInt(val) / 1000 + 's';
    } else if (unit == 's') {
      newValue = parseFloat(val) * 1000 + 'ms';
    }

    return newValue.length < match.length ? newValue : match;
  });
}

function optimizeUnits(name, value, unitsRegexp) {
  if (/^(?:\-moz\-calc|\-webkit\-calc|calc|rgb|hsl|rgba|hsla)\(/.test(value)) {
    return value;
  }

  if (name == 'flex' || name == '-ms-flex' || name == '-webkit-flex' || name == 'flex-basis' || name == '-webkit-flex-basis') {
    return value;
  }

  if (value.indexOf('%') > 0 && (name == 'height' || name == 'max-height' || name == 'width' || name == 'max-width')) {
    return value;
  }

  return value
    .replace(unitsRegexp, '$1' + '0' + '$2')
    .replace(unitsRegexp, '$1' + '0' + '$2');
}

function optimizeWhitespace(name, value) {
  if (name.indexOf('filter') > -1 || value.indexOf(' ') == -1 || value.indexOf('expression') === 0) {
    return value;
  }

  if (value.indexOf(Marker.SINGLE_QUOTE) > -1 || value.indexOf(Marker.DOUBLE_QUOTE) > -1) {
    return value;
  }

  value = value.replace(/\s+/g, ' ');

  if (value.indexOf('calc') > -1) {
    value = value.replace(/\) ?\/ ?/g, ')/ ');
  }

  return value
    .replace(/(\(;?)\s+/g, '$1')
    .replace(/\s+(;?\))/g, '$1')
    .replace(/, /g, ',');
}

function optimizeZeroDegUnit(_, value) {
  if (value.indexOf('0deg') == -1) {
    return value;
  }

  return value.replace(/\(0deg\)/g, '(0)');
}

function optimizeZeroUnits(name, value) {
  if (value.indexOf('0') == -1) {
    return value;
  }

  if (value.indexOf('-') > -1) {
    value = value
      .replace(/([^\w\d\-]|^)\-0([^\.]|$)/g, '$10$2')
      .replace(/([^\w\d\-]|^)\-0([^\.]|$)/g, '$10$2');
  }

  return value
    .replace(/(^|\s)0+([1-9])/g, '$1$2')
    .replace(/(^|\D)\.0+(\D|$)/g, '$10$2')
    .replace(/(^|\D)\.0+(\D|$)/g, '$10$2')
    .replace(/\.([1-9]*)0+(\D|$)/g, function (match, nonZeroPart, suffix) {
      return (nonZeroPart.length > 0 ? '.' : '') + nonZeroPart + suffix;
    })
    .replace(/(^|\D)0\.(\d)/g, '$1.$2');
}

function removeQuotes(name, value) {
  if (name == 'content' || name.indexOf('font-variation-settings') > -1 || name.indexOf('font-feature-settings') > -1 || name.indexOf('grid-') > -1) {
    return value;
  }

  return QUOTED_BUT_SAFE_PATTERN.test(value) ?
    value.substring(1, value.length - 1) :
    value;
}

function removeUrlQuotes(value) {
  return /^url\(['"].+['"]\)$/.test(value) && !/^url\(['"].*[\*\s\(\)'"].*['"]\)$/.test(value) && !/^url\(['"]data:[^;]+;charset/.test(value) ?
    value.replace(/["']/g, '') :
    value;
}

function transformValue(propertyName, propertyValue, rule, transformCallback) {
  var selector = serializeRules(rule);
  var transformedValue = transformCallback(propertyName, propertyValue, selector);

  if (transformedValue === undefined) {
    return propertyValue;
  } else if (transformedValue === false) {
    return IgnoreProperty;
  } else {
    return transformedValue;
  }
}

//

function optimizeBody(rule, properties, context) {
  var options = context.options;
  var levelOptions = options.level[OptimizationLevel.One];
  var property, name, type, value;
  var valueIsUrl;
  var propertyToken;
  var _properties = wrapForOptimizing(properties, true);

  propertyLoop:
  for (var i = 0, l = _properties.length; i < l; i++) {
    property = _properties[i];
    name = property.name;

    if (!PROPERTY_NAME_PATTERN.test(name)) {
      propertyToken = property.all[property.position];
      context.warnings.push('Invalid property name \'' + name + '\' at ' + formatPosition(propertyToken[1][2][0]) + '. Ignoring.');
      property.unused = true;
    }

    if (property.value.length === 0) {
      propertyToken = property.all[property.position];
      context.warnings.push('Empty property \'' + name + '\' at ' + formatPosition(propertyToken[1][2][0]) + '. Ignoring.');
      property.unused = true;
    }

    if (property.hack && (
        (property.hack[0] == Hack.ASTERISK || property.hack[0] == Hack.UNDERSCORE) && !options.compatibility.properties.iePrefixHack ||
        property.hack[0] == Hack.BACKSLASH && !options.compatibility.properties.ieSuffixHack ||
        property.hack[0] == Hack.BANG && !options.compatibility.properties.ieBangHack)) {
      property.unused = true;
    }

    if (levelOptions.removeNegativePaddings && name.indexOf('padding') === 0 && (isNegative(property.value[0]) || isNegative(property.value[1]) || isNegative(property.value[2]) || isNegative(property.value[3]))) {
      property.unused = true;
    }

    if (!options.compatibility.properties.ieFilters && isLegacyFilter(property)) {
      property.unused = true;
    }

    if (property.unused) {
      continue;
    }

    if (property.block) {
      optimizeBody(rule, property.value[0][1], context);
      continue;
    }

    if (VARIABLE_NAME_PATTERN.test(name)) {
      continue;
    }

    for (var j = 0, m = property.value.length; j < m; j++) {
      type = property.value[j][0];
      value = property.value[j][1];
      valueIsUrl = isUrl(value);

      if (type == Token.PROPERTY_BLOCK) {
        property.unused = true;
        context.warnings.push('Invalid value token at ' + formatPosition(value[0][1][2][0]) + '. Ignoring.');
        break;
      }

      if (valueIsUrl && !context.validator.isUrl(value)) {
        property.unused = true;
        context.warnings.push('Broken URL \'' + value + '\' at ' + formatPosition(property.value[j][2][0]) + '. Ignoring.');
        break;
      }

      if (valueIsUrl) {
        value = levelOptions.normalizeUrls ?
          normalizeUrl(value) :
          value;
        value = !options.compatibility.properties.urlQuotes ?
          removeUrlQuotes(value) :
          value;
      } else if (isQuoted(value)) {
        value = levelOptions.removeQuotes ?
          removeQuotes(name, value) :
          value;
      } else {
        value = levelOptions.removeWhitespace ?
          optimizeWhitespace(name, value) :
          value;
        value = optimizePrecision(name, value, options.precision);
        value = optimizePixelLengths(name, value, options.compatibility);
        value = levelOptions.replaceTimeUnits ?
          optimizeTimeUnits(name, value) :
          value;
        value = levelOptions.replaceZeroUnits ?
          optimizeZeroUnits(name, value) :
          value;

        if (options.compatibility.properties.zeroUnits) {
          value = optimizeZeroDegUnit(name, value);
          value = optimizeUnits(name, value, options.unitsRegexp);
        }

        if (options.compatibility.properties.colors) {
          value = optimizeColors(name, value, options.compatibility);
        }
      }

      value = transformValue(name, value, rule, levelOptions.transform);

      if (value === IgnoreProperty) {
        property.unused = true;
        continue propertyLoop;
      }

      property.value[j][1] = value;
    }

    if (levelOptions.replaceMultipleZeros) {
      optimizeMultipleZeros(property);
    }

    if (name == 'background' && levelOptions.optimizeBackground) {
      optimizeBackground(property);
    } else if (name.indexOf('border') === 0 && name.indexOf('radius') > 0 && levelOptions.optimizeBorderRadius) {
      optimizeBorderRadius(property);
    } else if (name == 'filter'&& levelOptions.optimizeFilter && options.compatibility.properties.ieFilters) {
      optimizeFilter(property);
    } else if (name == 'font-weight' && levelOptions.optimizeFontWeight) {
      optimizeFontWeight(property, 0);
    } else if (name == 'outline' && levelOptions.optimizeOutline) {
      optimizeOutline(property);
    }
  }

  restoreFromOptimizing(_properties);
  removeUnused(_properties);
  removeComments(properties, options);
}

function removeComments(tokens, options) {
  var token;
  var i;

  for (i = 0; i < tokens.length; i++) {
    token = tokens[i];

    if (token[0] != Token.COMMENT) {
      continue;
    }

    optimizeComment(token, options);

    if (token[1].length === 0) {
      tokens.splice(i, 1);
      i--;
    }
  }
}

function optimizeComment(token, options) {
  if (token[1][2] == Marker.EXCLAMATION && (options.level[OptimizationLevel.One].specialComments == 'all' || options.commentsKept < options.level[OptimizationLevel.One].specialComments)) {
    options.commentsKept++;
    return;
  }

  token[1] = [];
}

function cleanupCharsets(tokens) {
  var hasCharset = false;

  for (var i = 0, l = tokens.length; i < l; i++) {
    var token = tokens[i];

    if (token[0] != Token.AT_RULE)
      continue;

    if (!CHARSET_REGEXP.test(token[1]))
      continue;

    if (hasCharset || token[1].indexOf(CHARSET_TOKEN) == -1) {
      tokens.splice(i, 1);
      i--;
      l--;
    } else {
      hasCharset = true;
      tokens.splice(i, 1);
      tokens.unshift([Token.AT_RULE, token[1].replace(CHARSET_REGEXP, CHARSET_TOKEN)]);
    }
  }
}

function buildUnitRegexp(options) {
  var units = ['px', 'em', 'ex', 'cm', 'mm', 'in', 'pt', 'pc', '%'];
  var otherUnits = ['ch', 'rem', 'vh', 'vm', 'vmax', 'vmin', 'vw'];

  otherUnits.forEach(function (unit) {
    if (options.compatibility.units[unit]) {
      units.push(unit);
    }
  });

  return new RegExp('(^|\\s|\\(|,)0(?:' + units.join('|') + ')(\\W|$)', 'g');
}

function buildPrecisionOptions(roundingPrecision) {
  var precisionOptions = {
    matcher: null,
    units: {},
  };
  var optimizable = [];
  var unit;
  var value;

  for (unit in roundingPrecision) {
    value = roundingPrecision[unit];

    if (value != DEFAULT_ROUNDING_PRECISION) {
      precisionOptions.units[unit] = {};
      precisionOptions.units[unit].value = value;
      precisionOptions.units[unit].multiplier = Math.pow(10, value);

      optimizable.push(unit);
    }
  }

  if (optimizable.length > 0) {
    precisionOptions.enabled = true;
    precisionOptions.decimalPointMatcher = new RegExp('(\\d)\\.($|' + optimizable.join('|') + ')($|\W)', 'g');
    precisionOptions.zeroMatcher = new RegExp('(\\d*)(\\.\\d+)(' + optimizable.join('|') + ')', 'g');
  }

  return precisionOptions;
}

function isImport(token) {
  return IMPORT_PREFIX_PATTERN.test(token[1]);
}

function isLegacyFilter(property) {
  var value;

  if (property.name == 'filter' || property.name == '-ms-filter') {
    value = property.value[0][1];

    return value.indexOf('progid') > -1 ||
      value.indexOf('alpha') === 0 ||
      value.indexOf('chroma') === 0;
  } else {
    return false;
  }
}

function level1Optimize(tokens, context) {
  var options = context.options;
  var levelOptions = options.level[OptimizationLevel.One];
  var ie7Hack = options.compatibility.selectors.ie7Hack;
  var adjacentSpace = options.compatibility.selectors.adjacentSpace;
  var spaceAfterClosingBrace = options.compatibility.properties.spaceAfterClosingBrace;
  var format = options.format;
  var mayHaveCharset = false;
  var afterRules = false;

  options.unitsRegexp = options.unitsRegexp || buildUnitRegexp(options);
  options.precision = options.precision || buildPrecisionOptions(levelOptions.roundingPrecision);
  options.commentsKept = options.commentsKept || 0;

  for (var i = 0, l = tokens.length; i < l; i++) {
    var token = tokens[i];

    switch (token[0]) {
      case Token.AT_RULE:
        token[1] = isImport(token) && afterRules ? '' : token[1];
        token[1] = levelOptions.tidyAtRules ? tidyAtRule(token[1]) : token[1];
        mayHaveCharset = true;
        break;
      case Token.AT_RULE_BLOCK:
        optimizeBody(token[1], token[2], context);
        afterRules = true;
        break;
      case Token.NESTED_BLOCK:
        token[1] = levelOptions.tidyBlockScopes ? tidyBlock(token[1], spaceAfterClosingBrace) : token[1];
        level1Optimize(token[2], context);
        afterRules = true;
        break;
      case Token.COMMENT:
        optimizeComment(token, options);
        break;
      case Token.RULE:
        token[1] = levelOptions.tidySelectors ? tidyRules(token[1], !ie7Hack, adjacentSpace, format, context.warnings) : token[1];
        token[1] = token[1].length > 1 ? sortSelectors(token[1], levelOptions.selectorsSortingMethod) : token[1];
        optimizeBody(token[1], token[2], context);
        afterRules = true;
        break;
    }

    if (token[0] == Token.COMMENT && token[1].length === 0 || levelOptions.removeEmpty && (token[1].length === 0 || (token[2] && token[2].length === 0))) {
      tokens.splice(i, 1);
      i--;
      l--;
    }
  }

  if (levelOptions.cleanupCharsets && mayHaveCharset) {
    cleanupCharsets(tokens);
  }

  return tokens;
}

module.exports = level1Optimize;

},{"../../options/optimization-level":65,"../../options/rounding-precision":68,"../../tokenizer/marker":83,"../../tokenizer/token":84,"../../utils/format-position":87,"../../utils/split":96,"../../writer/one-time":98,"../hack":8,"../remove-unused":55,"../restore-from-optimizing":56,"../wrap-for-optimizing":58,"./shorten-hex":11,"./shorten-hsl":12,"./shorten-rgb":13,"./sort-selectors":14,"./tidy-at-rule":15,"./tidy-block":16,"./tidy-rules":17}],11:[function(require,module,exports){
var COLORS = {
  aliceblue: '#f0f8ff',
  antiquewhite: '#faebd7',
  aqua: '#0ff',
  aquamarine: '#7fffd4',
  azure: '#f0ffff',
  beige: '#f5f5dc',
  bisque: '#ffe4c4',
  black: '#000',
  blanchedalmond: '#ffebcd',
  blue: '#00f',
  blueviolet: '#8a2be2',
  brown: '#a52a2a',
  burlywood: '#deb887',
  cadetblue: '#5f9ea0',
  chartreuse: '#7fff00',
  chocolate: '#d2691e',
  coral: '#ff7f50',
  cornflowerblue: '#6495ed',
  cornsilk: '#fff8dc',
  crimson: '#dc143c',
  cyan: '#0ff',
  darkblue: '#00008b',
  darkcyan: '#008b8b',
  darkgoldenrod: '#b8860b',
  darkgray: '#a9a9a9',
  darkgreen: '#006400',
  darkgrey: '#a9a9a9',
  darkkhaki: '#bdb76b',
  darkmagenta: '#8b008b',
  darkolivegreen: '#556b2f',
  darkorange: '#ff8c00',
  darkorchid: '#9932cc',
  darkred: '#8b0000',
  darksalmon: '#e9967a',
  darkseagreen: '#8fbc8f',
  darkslateblue: '#483d8b',
  darkslategray: '#2f4f4f',
  darkslategrey: '#2f4f4f',
  darkturquoise: '#00ced1',
  darkviolet: '#9400d3',
  deeppink: '#ff1493',
  deepskyblue: '#00bfff',
  dimgray: '#696969',
  dimgrey: '#696969',
  dodgerblue: '#1e90ff',
  firebrick: '#b22222',
  floralwhite: '#fffaf0',
  forestgreen: '#228b22',
  fuchsia: '#f0f',
  gainsboro: '#dcdcdc',
  ghostwhite: '#f8f8ff',
  gold: '#ffd700',
  goldenrod: '#daa520',
  gray: '#808080',
  green: '#008000',
  greenyellow: '#adff2f',
  grey: '#808080',
  honeydew: '#f0fff0',
  hotpink: '#ff69b4',
  indianred: '#cd5c5c',
  indigo: '#4b0082',
  ivory: '#fffff0',
  khaki: '#f0e68c',
  lavender: '#e6e6fa',
  lavenderblush: '#fff0f5',
  lawngreen: '#7cfc00',
  lemonchiffon: '#fffacd',
  lightblue: '#add8e6',
  lightcoral: '#f08080',
  lightcyan: '#e0ffff',
  lightgoldenrodyellow: '#fafad2',
  lightgray: '#d3d3d3',
  lightgreen: '#90ee90',
  lightgrey: '#d3d3d3',
  lightpink: '#ffb6c1',
  lightsalmon: '#ffa07a',
  lightseagreen: '#20b2aa',
  lightskyblue: '#87cefa',
  lightslategray: '#778899',
  lightslategrey: '#778899',
  lightsteelblue: '#b0c4de',
  lightyellow: '#ffffe0',
  lime: '#0f0',
  limegreen: '#32cd32',
  linen: '#faf0e6',
  magenta: '#ff00ff',
  maroon: '#800000',
  mediumaquamarine: '#66cdaa',
  mediumblue: '#0000cd',
  mediumorchid: '#ba55d3',
  mediumpurple: '#9370db',
  mediumseagreen: '#3cb371',
  mediumslateblue: '#7b68ee',
  mediumspringgreen: '#00fa9a',
  mediumturquoise: '#48d1cc',
  mediumvioletred: '#c71585',
  midnightblue: '#191970',
  mintcream: '#f5fffa',
  mistyrose: '#ffe4e1',
  moccasin: '#ffe4b5',
  navajowhite: '#ffdead',
  navy: '#000080',
  oldlace: '#fdf5e6',
  olive: '#808000',
  olivedrab: '#6b8e23',
  orange: '#ffa500',
  orangered: '#ff4500',
  orchid: '#da70d6',
  palegoldenrod: '#eee8aa',
  palegreen: '#98fb98',
  paleturquoise: '#afeeee',
  palevioletred: '#db7093',
  papayawhip: '#ffefd5',
  peachpuff: '#ffdab9',
  peru: '#cd853f',
  pink: '#ffc0cb',
  plum: '#dda0dd',
  powderblue: '#b0e0e6',
  purple: '#800080',
  rebeccapurple: '#663399',
  red: '#f00',
  rosybrown: '#bc8f8f',
  royalblue: '#4169e1',
  saddlebrown: '#8b4513',
  salmon: '#fa8072',
  sandybrown: '#f4a460',
  seagreen: '#2e8b57',
  seashell: '#fff5ee',
  sienna: '#a0522d',
  silver: '#c0c0c0',
  skyblue: '#87ceeb',
  slateblue: '#6a5acd',
  slategray: '#708090',
  slategrey: '#708090',
  snow: '#fffafa',
  springgreen: '#00ff7f',
  steelblue: '#4682b4',
  tan: '#d2b48c',
  teal: '#008080',
  thistle: '#d8bfd8',
  tomato: '#ff6347',
  turquoise: '#40e0d0',
  violet: '#ee82ee',
  wheat: '#f5deb3',
  white: '#fff',
  whitesmoke: '#f5f5f5',
  yellow: '#ff0',
  yellowgreen: '#9acd32'
};

var toHex = {};
var toName = {};

for (var name in COLORS) {
  var hex = COLORS[name];

  if (name.length < hex.length) {
    toName[hex] = name;
  } else {
    toHex[name] = hex;
  }
}

var toHexPattern = new RegExp('(^| |,|\\))(' + Object.keys(toHex).join('|') + ')( |,|\\)|$)', 'ig');
var toNamePattern = new RegExp('(' + Object.keys(toName).join('|') + ')([^a-f0-9]|$)', 'ig');

function hexConverter(match, prefix, colorValue, suffix) {
  return prefix + toHex[colorValue.toLowerCase()] + suffix;
}

function nameConverter(match, colorValue, suffix) {
  return toName[colorValue.toLowerCase()] + suffix;
}

function shortenHex(value) {
  var hasHex = value.indexOf('#') > -1;
  var shortened = value.replace(toHexPattern, hexConverter);

  if (shortened != value) {
    shortened = shortened.replace(toHexPattern, hexConverter);
  }

  return hasHex ?
    shortened.replace(toNamePattern, nameConverter) :
    shortened;
}

module.exports = shortenHex;

},{}],12:[function(require,module,exports){
// HSL to RGB converter. Both methods adapted from:
// http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript

function hslToRgb(h, s, l) {
  var r, g, b;

  // normalize hue orientation b/w 0 and 360 degrees
  h = h % 360;
  if (h < 0)
    h += 360;
  h = ~~h / 360;

  if (s < 0)
    s = 0;
  else if (s > 100)
    s = 100;
  s = ~~s / 100;

  if (l < 0)
    l = 0;
  else if (l > 100)
    l = 100;
  l = ~~l / 100;

  if (s === 0) {
    r = g = b = l; // achromatic
  } else {
    var q = l < 0.5 ?
      l * (1 + s) :
      l + s - l * s;
    var p = 2 * l - q;
    r = hueToRgb(p, q, h + 1/3);
    g = hueToRgb(p, q, h);
    b = hueToRgb(p, q, h - 1/3);
  }

  return [~~(r * 255), ~~(g * 255), ~~(b * 255)];
}

function hueToRgb(p, q, t) {
  if (t < 0) t += 1;
  if (t > 1) t -= 1;
  if (t < 1/6) return p + (q - p) * 6 * t;
  if (t < 1/2) return q;
  if (t < 2/3) return p + (q - p) * (2/3 - t) * 6;
  return p;
}

function shortenHsl(hue, saturation, lightness) {
  var asRgb = hslToRgb(hue, saturation, lightness);
  var redAsHex = asRgb[0].toString(16);
  var greenAsHex = asRgb[1].toString(16);
  var blueAsHex = asRgb[2].toString(16);

  return '#' +
    ((redAsHex.length == 1 ? '0' : '') + redAsHex) +
    ((greenAsHex.length == 1 ? '0' : '') + greenAsHex) +
    ((blueAsHex.length == 1 ? '0' : '') + blueAsHex);
}

module.exports = shortenHsl;

},{}],13:[function(require,module,exports){
function shortenRgb(red, green, blue) {
  var normalizedRed = Math.max(0, Math.min(parseInt(red), 255));
  var normalizedGreen = Math.max(0, Math.min(parseInt(green), 255));
  var normalizedBlue = Math.max(0, Math.min(parseInt(blue), 255));

  // Credit: Asen  http://jsbin.com/UPUmaGOc/2/edit?js,console
  return '#' + ('00000' + (normalizedRed << 16 | normalizedGreen << 8 | normalizedBlue).toString(16)).slice(-6);
}

module.exports = shortenRgb;

},{}],14:[function(require,module,exports){
var naturalCompare = require('../../utils/natural-compare');

function naturalSorter(scope1, scope2) {
  return naturalCompare(scope1[1], scope2[1]);
}

function standardSorter(scope1, scope2) {
  return scope1[1] > scope2[1] ? 1 : -1;
}

function sortSelectors(selectors, method) {
  switch (method) {
    case 'natural':
      return selectors.sort(naturalSorter);
    case 'standard':
      return selectors.sort(standardSorter);
    case 'none':
    case false:
      return selectors;
  }
}

module.exports = sortSelectors;

},{"../../utils/natural-compare":94}],15:[function(require,module,exports){
function tidyAtRule(value) {
  return value
    .replace(/\s+/g, ' ')
    .replace(/url\(\s+/g, 'url(')
    .replace(/\s+\)/g, ')')
    .trim();
}

module.exports = tidyAtRule;

},{}],16:[function(require,module,exports){
var SUPPORTED_COMPACT_BLOCK_MATCHER = /^@media\W/;

function tidyBlock(values, spaceAfterClosingBrace) {
  var withoutSpaceAfterClosingBrace;
  var i;

  for (i = values.length - 1; i >= 0; i--) {
    withoutSpaceAfterClosingBrace = !spaceAfterClosingBrace && SUPPORTED_COMPACT_BLOCK_MATCHER.test(values[i][1]);

    values[i][1] = values[i][1]
      .replace(/\n|\r\n/g, ' ')
      .replace(/\s+/g, ' ')
      .replace(/(,|:|\() /g, '$1')
      .replace(/ \)/g, ')')
      .replace(/'([a-zA-Z][a-zA-Z\d\-_]+)'/, '$1')
      .replace(/"([a-zA-Z][a-zA-Z\d\-_]+)"/, '$1')
      .replace(withoutSpaceAfterClosingBrace ? /\) /g : null, ')');
  }

  return values;
}

module.exports = tidyBlock;

},{}],17:[function(require,module,exports){
var Spaces = require('../../options/format').Spaces;
var Marker = require('../../tokenizer/marker');
var formatPosition = require('../../utils/format-position');

var CASE_ATTRIBUTE_PATTERN = /[\s"'][iI]\s*\]/;
var CASE_RESTORE_PATTERN = /([\d\w])([iI])\]/g;
var DOUBLE_QUOTE_CASE_PATTERN = /="([a-zA-Z][a-zA-Z\d\-_]+)"([iI])/g;
var DOUBLE_QUOTE_PATTERN = /="([a-zA-Z][a-zA-Z\d\-_]+)"(\s|\])/g;
var HTML_COMMENT_PATTERN = /^(?:(?:<!--|-->)\s*)+/;
var SINGLE_QUOTE_CASE_PATTERN = /='([a-zA-Z][a-zA-Z\d\-_]+)'([iI])/g;
var SINGLE_QUOTE_PATTERN = /='([a-zA-Z][a-zA-Z\d\-_]+)'(\s|\])/g;
var RELATION_PATTERN = /[>\+~]/;
var WHITESPACE_PATTERN = /\s/;

var ASTERISK_PLUS_HTML_HACK = '*+html ';
var ASTERISK_FIRST_CHILD_PLUS_HTML_HACK = '*:first-child+html ';
var LESS_THAN = '<';

function hasInvalidCharacters(value) {
  var isEscaped;
  var isInvalid = false;
  var character;
  var isQuote = false;
  var i, l;

  for (i = 0, l = value.length; i < l; i++) {
    character = value[i];

    if (isEscaped) {
      // continue as always
    } else if (character == Marker.SINGLE_QUOTE || character == Marker.DOUBLE_QUOTE) {
      isQuote = !isQuote;
    } else if (!isQuote && (character == Marker.CLOSE_CURLY_BRACKET || character == Marker.EXCLAMATION || character == LESS_THAN || character == Marker.SEMICOLON)) {
      isInvalid = true;
      break;
    } else if (!isQuote && i === 0 && RELATION_PATTERN.test(character)) {
      isInvalid = true;
      break;
    }

    isEscaped = character == Marker.BACK_SLASH;
  }

  return isInvalid;
}

function removeWhitespace(value, format) {
  var stripped = [];
  var character;
  var isNewLineNix;
  var isNewLineWin;
  var isEscaped;
  var wasEscaped;
  var isQuoted;
  var isSingleQuoted;
  var isDoubleQuoted;
  var isAttribute;
  var isRelation;
  var isWhitespace;
  var roundBracketLevel = 0;
  var wasRelation = false;
  var wasWhitespace = false;
  var withCaseAttribute = CASE_ATTRIBUTE_PATTERN.test(value);
  var spaceAroundRelation = format && format.spaces[Spaces.AroundSelectorRelation];
  var i, l;

  for (i = 0, l = value.length; i < l; i++) {
    character = value[i];

    isNewLineNix = character == Marker.NEW_LINE_NIX;
    isNewLineWin = character == Marker.NEW_LINE_NIX && value[i - 1] == Marker.CARRIAGE_RETURN;
    isQuoted = isSingleQuoted || isDoubleQuoted;
    isRelation = !isAttribute && !isEscaped && roundBracketLevel === 0 && RELATION_PATTERN.test(character);
    isWhitespace = WHITESPACE_PATTERN.test(character);

    if (wasEscaped && isQuoted && isNewLineWin) {
      // swallow escaped new windows lines in comments
      stripped.pop();
      stripped.pop();
    } else if (isEscaped && isQuoted && isNewLineNix) {
      // swallow escaped new *nix lines in comments
      stripped.pop();
    } else if (isEscaped) {
      stripped.push(character);
    } else if (character == Marker.OPEN_SQUARE_BRACKET && !isQuoted) {
      stripped.push(character);
      isAttribute = true;
    } else if (character == Marker.CLOSE_SQUARE_BRACKET && !isQuoted) {
      stripped.push(character);
      isAttribute = false;
    } else if (character == Marker.OPEN_ROUND_BRACKET && !isQuoted) {
      stripped.push(character);
      roundBracketLevel++;
    } else if (character == Marker.CLOSE_ROUND_BRACKET && !isQuoted) {
      stripped.push(character);
      roundBracketLevel--;
    } else if (character == Marker.SINGLE_QUOTE && !isQuoted) {
      stripped.push(character);
      isSingleQuoted = true;
    } else if (character == Marker.DOUBLE_QUOTE && !isQuoted) {
      stripped.push(character);
      isDoubleQuoted = true;
    } else if (character == Marker.SINGLE_QUOTE && isQuoted) {
      stripped.push(character);
      isSingleQuoted = false;
    } else if (character == Marker.DOUBLE_QUOTE && isQuoted) {
      stripped.push(character);
      isDoubleQuoted = false;
    } else if (isWhitespace && wasRelation && !spaceAroundRelation) {
      continue;
    } else if (!isWhitespace && wasRelation && spaceAroundRelation) {
      stripped.push(Marker.SPACE);
      stripped.push(character);
    } else if (isWhitespace && (isAttribute || roundBracketLevel > 0) && !isQuoted) {
      // skip space
    } else if (isWhitespace && wasWhitespace && !isQuoted) {
      // skip extra space
    } else if ((isNewLineWin || isNewLineNix) && (isAttribute || roundBracketLevel > 0) && isQuoted) {
      // skip newline
    } else if (isRelation && wasWhitespace && !spaceAroundRelation) {
      stripped.pop();
      stripped.push(character);
    } else if (isRelation && !wasWhitespace && spaceAroundRelation) {
      stripped.push(Marker.SPACE);
      stripped.push(character);
    } else if (isWhitespace) {
      stripped.push(Marker.SPACE);
    } else {
      stripped.push(character);
    }

    wasEscaped = isEscaped;
    isEscaped = character == Marker.BACK_SLASH;
    wasRelation = isRelation;
    wasWhitespace = isWhitespace;
  }

  return withCaseAttribute ?
    stripped.join('').replace(CASE_RESTORE_PATTERN, '$1 $2]') :
    stripped.join('');
}

function removeQuotes(value) {
  if (value.indexOf('\'') == -1 && value.indexOf('"') == -1) {
    return value;
  }

  return value
    .replace(SINGLE_QUOTE_CASE_PATTERN, '=$1 $2')
    .replace(SINGLE_QUOTE_PATTERN, '=$1$2')
    .replace(DOUBLE_QUOTE_CASE_PATTERN, '=$1 $2')
    .replace(DOUBLE_QUOTE_PATTERN, '=$1$2');
}

function tidyRules(rules, removeUnsupported, adjacentSpace, format, warnings) {
  var list = [];
  var repeated = [];

  function removeHTMLComment(rule, match) {
    warnings.push('HTML comment \'' + match + '\' at ' + formatPosition(rule[2][0]) + '. Removing.');
    return '';
  }

  for (var i = 0, l = rules.length; i < l; i++) {
    var rule = rules[i];
    var reduced = rule[1];

    reduced = reduced.replace(HTML_COMMENT_PATTERN, removeHTMLComment.bind(null, rule));

    if (hasInvalidCharacters(reduced)) {
      warnings.push('Invalid selector \'' + rule[1] + '\' at ' + formatPosition(rule[2][0]) + '. Ignoring.');
      continue;
    }

    reduced = removeWhitespace(reduced, format);
    reduced = removeQuotes(reduced);

    if (adjacentSpace && reduced.indexOf('nav') > 0) {
      reduced = reduced.replace(/\+nav(\S|$)/, '+ nav$1');
    }

    if (removeUnsupported && reduced.indexOf(ASTERISK_PLUS_HTML_HACK) > -1) {
      continue;
    }

    if (removeUnsupported && reduced.indexOf(ASTERISK_FIRST_CHILD_PLUS_HTML_HACK) > -1) {
      continue;
    }

    if (reduced.indexOf('*') > -1) {
      reduced = reduced
        .replace(/\*([:#\.\[])/g, '$1')
        .replace(/^(\:first\-child)?\+html/, '*$1+html');
    }

    if (repeated.indexOf(reduced) > -1) {
      continue;
    }

    rule[1] = reduced;
    repeated.push(reduced);
    list.push(rule);
  }

  if (list.length == 1 && list[0][1].length === 0) {
    warnings.push('Empty selector \'' + list[0][1] + '\' at ' + formatPosition(list[0][2][0]) + '. Ignoring.');
    list = [];
  }

  return list;
}

module.exports = tidyRules;

},{"../../options/format":61,"../../tokenizer/marker":83,"../../utils/format-position":87}],18:[function(require,module,exports){
var InvalidPropertyError = require('./invalid-property-error');

var wrapSingle = require('../wrap-for-optimizing').single;

var Token = require('../../tokenizer/token');
var Marker = require('../../tokenizer/marker');

var formatPosition = require('../../utils/format-position');

function _anyIsInherit(values) {
  var i, l;

  for (i = 0, l = values.length; i < l; i++) {
    if (values[i][1] == 'inherit') {
      return true;
    }
  }

  return false;
}

function _colorFilter(validator) {
  return function (value) {
    return value[1] == 'invert' || validator.isColor(value[1]) || validator.isPrefixed(value[1]);
  };
}

function _styleFilter(validator) {
  return function (value) {
    return value[1] != 'inherit' && validator.isStyleKeyword(value[1]) && !validator.isColorFunction(value[1]);
  };
}

function _wrapDefault(name, property, compactable) {
  var descriptor = compactable[name];
  if (descriptor.doubleValues && descriptor.defaultValue.length == 2) {
    return wrapSingle([
      Token.PROPERTY,
      [Token.PROPERTY_NAME, name],
      [Token.PROPERTY_VALUE, descriptor.defaultValue[0]],
      [Token.PROPERTY_VALUE, descriptor.defaultValue[1]]
    ]);
  } else if (descriptor.doubleValues && descriptor.defaultValue.length == 1) {
    return wrapSingle([
      Token.PROPERTY,
      [Token.PROPERTY_NAME, name],
      [Token.PROPERTY_VALUE, descriptor.defaultValue[0]]
    ]);
  } else {
    return wrapSingle([
      Token.PROPERTY,
      [Token.PROPERTY_NAME, name],
      [Token.PROPERTY_VALUE, descriptor.defaultValue]
    ]);
  }
}

function _widthFilter(validator) {
  return function (value) {
    return value[1] != 'inherit' &&
      (validator.isWidth(value[1]) || validator.isUnit(value[1]) && !validator.isDynamicUnit(value[1])) &&
      !validator.isStyleKeyword(value[1]) &&
      !validator.isColorFunction(value[1]);
  };
}

function animation(property, compactable, validator) {
  var duration = _wrapDefault(property.name + '-duration', property, compactable);
  var timing = _wrapDefault(property.name + '-timing-function', property, compactable);
  var delay = _wrapDefault(property.name + '-delay', property, compactable);
  var iteration = _wrapDefault(property.name + '-iteration-count', property, compactable);
  var direction = _wrapDefault(property.name + '-direction', property, compactable);
  var fill = _wrapDefault(property.name + '-fill-mode', property, compactable);
  var play = _wrapDefault(property.name + '-play-state', property, compactable);
  var name = _wrapDefault(property.name + '-name', property, compactable);
  var components = [duration, timing, delay, iteration, direction, fill, play, name];
  var values = property.value;
  var value;
  var durationSet = false;
  var timingSet = false;
  var delaySet = false;
  var iterationSet = false;
  var directionSet = false;
  var fillSet = false;
  var playSet = false;
  var nameSet = false;
  var i;
  var l;

  if (property.value.length == 1 && property.value[0][1] == 'inherit') {
    duration.value = timing.value = delay.value = iteration.value = direction.value = fill.value = play.value = name.value = property.value;
    return components;
  }

  if (values.length > 1 && _anyIsInherit(values)) {
    throw new InvalidPropertyError('Invalid animation values at ' + formatPosition(values[0][2][0]) + '. Ignoring.');
  }

  for (i = 0, l = values.length; i < l; i++) {
    value = values[i];

    if (validator.isTime(value[1]) && !durationSet) {
      duration.value = [value];
      durationSet = true;
    } else if (validator.isTime(value[1]) && !delaySet) {
      delay.value = [value];
      delaySet = true;
    } else if ((validator.isGlobal(value[1]) || validator.isTimingFunction(value[1])) && !timingSet) {
      timing.value = [value];
      timingSet = true;
    } else if ((validator.isAnimationIterationCountKeyword(value[1]) || validator.isPositiveNumber(value[1])) && !iterationSet) {
      iteration.value = [value];
      iterationSet = true;
    } else if (validator.isAnimationDirectionKeyword(value[1]) && !directionSet) {
      direction.value = [value];
      directionSet = true;
    } else if (validator.isAnimationFillModeKeyword(value[1]) && !fillSet) {
      fill.value = [value];
      fillSet = true;
    } else if (validator.isAnimationPlayStateKeyword(value[1]) && !playSet) {
      play.value = [value];
      playSet = true;
    } else if ((validator.isAnimationNameKeyword(value[1]) || validator.isIdentifier(value[1])) && !nameSet) {
      name.value = [value];
      nameSet = true;
    } else {
      throw new InvalidPropertyError('Invalid animation value at ' + formatPosition(value[2][0]) + '. Ignoring.');
    }
  }

  return components;
}

function background(property, compactable, validator) {
  var image = _wrapDefault('background-image', property, compactable);
  var position = _wrapDefault('background-position', property, compactable);
  var size = _wrapDefault('background-size', property, compactable);
  var repeat = _wrapDefault('background-repeat', property, compactable);
  var attachment = _wrapDefault('background-attachment', property, compactable);
  var origin = _wrapDefault('background-origin', property, compactable);
  var clip = _wrapDefault('background-clip', property, compactable);
  var color = _wrapDefault('background-color', property, compactable);
  var components = [image, position, size, repeat, attachment, origin, clip, color];
  var values = property.value;

  var positionSet = false;
  var clipSet = false;
  var originSet = false;
  var repeatSet = false;

  var anyValueSet = false;

  if (property.value.length == 1 && property.value[0][1] == 'inherit') {
    // NOTE: 'inherit' is not a valid value for background-attachment
    color.value = image.value =  repeat.value = position.value = size.value = origin.value = clip.value = property.value;
    return components;
  }

  if (property.value.length == 1 && property.value[0][1] == '0 0') {
    return components;
  }

  for (var i = values.length - 1; i >= 0; i--) {
    var value = values[i];

    if (validator.isBackgroundAttachmentKeyword(value[1])) {
      attachment.value = [value];
      anyValueSet = true;
    } else if (validator.isBackgroundClipKeyword(value[1]) || validator.isBackgroundOriginKeyword(value[1])) {
      if (clipSet) {
        origin.value = [value];
        originSet = true;
      } else {
        clip.value = [value];
        clipSet = true;
      }
      anyValueSet = true;
    } else if (validator.isBackgroundRepeatKeyword(value[1])) {
      if (repeatSet) {
        repeat.value.unshift(value);
      } else {
        repeat.value = [value];
        repeatSet = true;
      }
      anyValueSet = true;
    } else if (validator.isBackgroundPositionKeyword(value[1]) || validator.isBackgroundSizeKeyword(value[1]) || validator.isUnit(value[1]) || validator.isDynamicUnit(value[1])) {
      if (i > 0) {
        var previousValue = values[i - 1];

        if (previousValue[1] == Marker.FORWARD_SLASH) {
          size.value = [value];
        } else if (i > 1 && values[i - 2][1] == Marker.FORWARD_SLASH) {
          size.value = [previousValue, value];
          i -= 2;
        } else {
          if (!positionSet)
            position.value = [];

          position.value.unshift(value);
          positionSet = true;
        }
      } else {
        if (!positionSet)
          position.value = [];

        position.value.unshift(value);
        positionSet = true;
      }
      anyValueSet = true;
    } else if ((color.value[0][1] == compactable[color.name].defaultValue || color.value[0][1] == 'none') && (validator.isColor(value[1]) || validator.isPrefixed(value[1]))) {
      color.value = [value];
      anyValueSet = true;
    } else if (validator.isUrl(value[1]) || validator.isFunction(value[1])) {
      image.value = [value];
      anyValueSet = true;
    }
  }

  if (clipSet && !originSet)
    origin.value = clip.value.slice(0);

  if (!anyValueSet) {
    throw new InvalidPropertyError('Invalid background value at ' + formatPosition(values[0][2][0]) + '. Ignoring.');
  }

  return components;
}

function borderRadius(property, compactable) {
  var values = property.value;
  var splitAt = -1;

  for (var i = 0, l = values.length; i < l; i++) {
    if (values[i][1] == Marker.FORWARD_SLASH) {
      splitAt = i;
      break;
    }
  }

  if (splitAt === 0 || splitAt === values.length - 1) {
    throw new InvalidPropertyError('Invalid border-radius value at ' + formatPosition(values[0][2][0]) + '. Ignoring.');
  }

  var target = _wrapDefault(property.name, property, compactable);
  target.value = splitAt > -1 ?
    values.slice(0, splitAt) :
    values.slice(0);
  target.components = fourValues(target, compactable);

  var remainder = _wrapDefault(property.name, property, compactable);
  remainder.value = splitAt > -1 ?
    values.slice(splitAt + 1) :
    values.slice(0);
  remainder.components = fourValues(remainder, compactable);

  for (var j = 0; j < 4; j++) {
    target.components[j].multiplex = true;
    target.components[j].value = target.components[j].value.concat(remainder.components[j].value);
  }

  return target.components;
}

function font(property, compactable, validator) {
  var style = _wrapDefault('font-style', property, compactable);
  var variant = _wrapDefault('font-variant', property, compactable);
  var weight = _wrapDefault('font-weight', property, compactable);
  var stretch = _wrapDefault('font-stretch', property, compactable);
  var size = _wrapDefault('font-size', property, compactable);
  var height = _wrapDefault('line-height', property, compactable);
  var family = _wrapDefault('font-family', property, compactable);
  var components = [style, variant, weight, stretch, size, height, family];
  var values = property.value;
  var fuzzyMatched = 4; // style, variant, weight, and stretch
  var index = 0;
  var isStretchSet = false;
  var isStretchValid;
  var isStyleSet = false;
  var isStyleValid;
  var isVariantSet = false;
  var isVariantValid;
  var isWeightSet = false;
  var isWeightValid;
  var isSizeSet = false;
  var appendableFamilyName = false;

  if (!values[index]) {
    throw new InvalidPropertyError('Missing font values at ' + formatPosition(property.all[property.position][1][2][0]) + '. Ignoring.');
  }

  if (values.length == 1 && values[0][1] == 'inherit') {
    style.value = variant.value = weight.value = stretch.value = size.value = height.value = family.value = values;
    return components;
  }

  if (values.length == 1 && (validator.isFontKeyword(values[0][1]) || validator.isGlobal(values[0][1]) || validator.isPrefixed(values[0][1]))) {
    values[0][1] = Marker.INTERNAL + values[0][1];
    style.value = variant.value = weight.value = stretch.value = size.value = height.value = family.value = values;
    return components;
  }

  if (values.length < 2 || !_anyIsFontSize(values, validator) || !_anyIsFontFamily(values, validator)) {
    throw new InvalidPropertyError('Invalid font values at ' + formatPosition(property.all[property.position][1][2][0]) + '. Ignoring.');
  }

  if (values.length > 1 && _anyIsInherit(values)) {
    throw new InvalidPropertyError('Invalid font values at ' + formatPosition(values[0][2][0]) + '. Ignoring.');
  }

  // fuzzy match style, variant, weight, and stretch on first elements
  while (index < fuzzyMatched) {
    isStretchValid = validator.isFontStretchKeyword(values[index][1]) || validator.isGlobal(values[index][1]);
    isStyleValid = validator.isFontStyleKeyword(values[index][1]) || validator.isGlobal(values[index][1]);
    isVariantValid = validator.isFontVariantKeyword(values[index][1]) || validator.isGlobal(values[index][1]);
    isWeightValid = validator.isFontWeightKeyword(values[index][1]) || validator.isGlobal(values[index][1]);

    if (isStyleValid && !isStyleSet) {
      style.value = [values[index]];
      isStyleSet = true;
    } else if (isVariantValid && !isVariantSet) {
      variant.value = [values[index]];
      isVariantSet = true;
    } else if (isWeightValid && !isWeightSet) {
      weight.value = [values[index]];
      isWeightSet = true;
    } else if (isStretchValid && !isStretchSet) {
      stretch.value = [values[index]];
      isStretchSet = true;
    } else if (isStyleValid && isStyleSet || isVariantValid && isVariantSet || isWeightValid && isWeightSet || isStretchValid && isStretchSet) {
      throw new InvalidPropertyError('Invalid font style / variant / weight / stretch value at ' + formatPosition(values[0][2][0]) + '. Ignoring.');
    } else {
      break;
    }

    index++;
  }

  // now comes font-size ...
  if (validator.isFontSizeKeyword(values[index][1]) || validator.isUnit(values[index][1]) && !validator.isDynamicUnit(values[index][1])) {
    size.value = [values[index]];
    isSizeSet = true;
    index++;
  } else {
    throw new InvalidPropertyError('Missing font size at ' + formatPosition(values[0][2][0]) + '. Ignoring.');
  }

  if (!values[index]) {
    throw new InvalidPropertyError('Missing font family at ' + formatPosition(values[0][2][0]) + '. Ignoring.');
  }

  // ... and perhaps line-height
  if (isSizeSet && values[index] && values[index][1] == Marker.FORWARD_SLASH && values[index + 1] && (validator.isLineHeightKeyword(values[index + 1][1]) || validator.isUnit(values[index + 1][1]) || validator.isNumber(values[index + 1][1]))) {
    height.value = [values[index + 1]];
    index++;
    index++;
  }

  // ... and whatever comes next is font-family
  family.value = [];

  while (values[index]) {
    if (values[index][1] == Marker.COMMA) {
      appendableFamilyName = false;
    } else {
      if (appendableFamilyName) {
        family.value[family.value.length - 1][1] += Marker.SPACE + values[index][1];
      } else {
        family.value.push(values[index]);
      }

      appendableFamilyName = true;
    }

    index++;
  }

  if (family.value.length === 0) {
    throw new InvalidPropertyError('Missing font family at ' + formatPosition(values[0][2][0]) + '. Ignoring.');
  }

  return components;
}

function _anyIsFontSize(values, validator) {
  var value;
  var i, l;

  for (i = 0, l = values.length; i < l; i++) {
    value = values[i];

    if (validator.isFontSizeKeyword(value[1]) || validator.isUnit(value[1]) && !validator.isDynamicUnit(value[1]) || validator.isFunction(value[1])) {
      return true;
    }
  }

  return false;
}

function _anyIsFontFamily(values, validator) {
  var value;
  var i, l;

  for (i = 0, l = values.length; i < l; i++) {
    value = values[i];

    if (validator.isIdentifier(value[1])) {
      return true;
    }
  }

  return false;
}

function fourValues(property, compactable) {
  var componentNames = compactable[property.name].components;
  var components = [];
  var value = property.value;

  if (value.length < 1)
    return [];

  if (value.length < 2)
    value[1] = value[0].slice(0);
  if (value.length < 3)
    value[2] = value[0].slice(0);
  if (value.length < 4)
    value[3] = value[1].slice(0);

  for (var i = componentNames.length - 1; i >= 0; i--) {
    var component = wrapSingle([
      Token.PROPERTY,
      [Token.PROPERTY_NAME, componentNames[i]]
    ]);
    component.value = [value[i]];
    components.unshift(component);
  }

  return components;
}

function multiplex(splitWith) {
  return function (property, compactable, validator) {
    var splitsAt = [];
    var values = property.value;
    var i, j, l, m;

    // find split commas
    for (i = 0, l = values.length; i < l; i++) {
      if (values[i][1] == ',')
        splitsAt.push(i);
    }

    if (splitsAt.length === 0)
      return splitWith(property, compactable, validator);

    var splitComponents = [];

    // split over commas, and into components
    for (i = 0, l = splitsAt.length; i <= l; i++) {
      var from = i === 0 ? 0 : splitsAt[i - 1] + 1;
      var to = i < l ? splitsAt[i] : values.length;

      var _property = _wrapDefault(property.name, property, compactable);
      _property.value = values.slice(from, to);

      splitComponents.push(splitWith(_property, compactable, validator));
    }

    var components = splitComponents[0];

    // group component values from each split
    for (i = 0, l = components.length; i < l; i++) {
      components[i].multiplex = true;

      for (j = 1, m = splitComponents.length; j < m; j++) {
        components[i].value.push([Token.PROPERTY_VALUE, Marker.COMMA]);
        Array.prototype.push.apply(components[i].value, splitComponents[j][i].value);
      }
    }

    return components;
  };
}

function listStyle(property, compactable, validator) {
  var type = _wrapDefault('list-style-type', property, compactable);
  var position = _wrapDefault('list-style-position', property, compactable);
  var image = _wrapDefault('list-style-image', property, compactable);
  var components = [type, position, image];

  if (property.value.length == 1 && property.value[0][1] == 'inherit') {
    type.value = position.value = image.value = [property.value[0]];
    return components;
  }

  var values = property.value.slice(0);
  var total = values.length;
  var index = 0;

  // `image` first...
  for (index = 0, total = values.length; index < total; index++) {
    if (validator.isUrl(values[index][1]) || values[index][1] == '0') {
      image.value = [values[index]];
      values.splice(index, 1);
      break;
    }
  }

  // ... then `position`
  for (index = 0, total = values.length; index < total; index++) {
    if (validator.isListStylePositionKeyword(values[index][1])) {
      position.value = [values[index]];
      values.splice(index, 1);
      break;
    }
  }

  // ... and what's left is a `type`
  if (values.length > 0 && (validator.isListStyleTypeKeyword(values[0][1]) || validator.isIdentifier(values[0][1]))) {
    type.value = [values[0]];
  }

  return components;
}

function transition(property, compactable, validator) {
  var prop = _wrapDefault(property.name + '-property', property, compactable);
  var duration = _wrapDefault(property.name + '-duration', property, compactable);
  var timing = _wrapDefault(property.name + '-timing-function', property, compactable);
  var delay = _wrapDefault(property.name + '-delay', property, compactable);
  var components = [prop, duration, timing, delay];
  var values = property.value;
  var value;
  var durationSet = false;
  var delaySet = false;
  var propSet = false;
  var timingSet = false;
  var i;
  var l;

  if (property.value.length == 1 && property.value[0][1] == 'inherit') {
    prop.value = duration.value = timing.value = delay.value = property.value;
    return components;
  }

  if (values.length > 1 && _anyIsInherit(values)) {
    throw new InvalidPropertyError('Invalid animation values at ' + formatPosition(values[0][2][0]) + '. Ignoring.');
  }

  for (i = 0, l = values.length; i < l; i++) {
    value = values[i];

    if (validator.isTime(value[1]) && !durationSet) {
      duration.value = [value];
      durationSet = true;
    } else if (validator.isTime(value[1]) && !delaySet) {
      delay.value = [value];
      delaySet = true;
    } else if ((validator.isGlobal(value[1]) || validator.isTimingFunction(value[1])) && !timingSet) {
      timing.value = [value];
      timingSet = true;
    } else if (validator.isIdentifier(value[1]) && !propSet) {
      prop.value = [value];
      propSet = true;
    } else {
      throw new InvalidPropertyError('Invalid animation value at ' + formatPosition(value[2][0]) + '. Ignoring.');
    }
  }

  return components;
}

function widthStyleColor(property, compactable, validator) {
  var descriptor = compactable[property.name];
  var components = [
    _wrapDefault(descriptor.components[0], property, compactable),
    _wrapDefault(descriptor.components[1], property, compactable),
    _wrapDefault(descriptor.components[2], property, compactable)
  ];
  var color, style, width;

  for (var i = 0; i < 3; i++) {
    var component = components[i];

    if (component.name.indexOf('color') > 0)
      color = component;
    else if (component.name.indexOf('style') > 0)
      style = component;
    else
      width = component;
  }

  if ((property.value.length == 1 && property.value[0][1] == 'inherit') ||
      (property.value.length == 3 && property.value[0][1] == 'inherit' && property.value[1][1] == 'inherit' && property.value[2][1] == 'inherit')) {
    color.value = style.value = width.value = [property.value[0]];
    return components;
  }

  var values = property.value.slice(0);
  var match, matches;

  // NOTE: usually users don't follow the required order of parts in this shorthand,
  // so we'll try to parse it caring as little about order as possible

  if (values.length > 0) {
    matches = values.filter(_widthFilter(validator));
    match = matches.length > 1 && (matches[0][1] == 'none' || matches[0][1] == 'auto') ? matches[1] : matches[0];
    if (match) {
      width.value = [match];
      values.splice(values.indexOf(match), 1);
    }
  }

  if (values.length > 0) {
    match = values.filter(_styleFilter(validator))[0];
    if (match) {
      style.value = [match];
      values.splice(values.indexOf(match), 1);
    }
  }

  if (values.length > 0) {
    match = values.filter(_colorFilter(validator))[0];
    if (match) {
      color.value = [match];
      values.splice(values.indexOf(match), 1);
    }
  }

  return components;
}

module.exports = {
  animation: animation,
  background: background,
  border: widthStyleColor,
  borderRadius: borderRadius,
  font: font,
  fourValues: fourValues,
  listStyle: listStyle,
  multiplex: multiplex,
  outline: widthStyleColor,
  transition: transition
};

},{"../../tokenizer/marker":83,"../../tokenizer/token":84,"../../utils/format-position":87,"../wrap-for-optimizing":58,"./invalid-property-error":23}],19:[function(require,module,exports){
var understandable = require('./properties/understandable');

function animationIterationCount(validator, value1, value2) {
  if (!understandable(validator, value1, value2, 0, true) && !(validator.isAnimationIterationCountKeyword(value2) || validator.isPositiveNumber(value2))) {
    return false;
  } else if (validator.isVariable(value1) && validator.isVariable(value2)) {
    return true;
  }

  return validator.isAnimationIterationCountKeyword(value2) || validator.isPositiveNumber(value2);
}

function animationName(validator, value1, value2) {
  if (!understandable(validator, value1, value2, 0, true) && !(validator.isAnimationNameKeyword(value2) || validator.isIdentifier(value2))) {
    return false;
  } else if (validator.isVariable(value1) && validator.isVariable(value2)) {
    return true;
  }

  return validator.isAnimationNameKeyword(value2) || validator.isIdentifier(value2);
}

function areSameFunction(validator, value1, value2) {
  if (!validator.isFunction(value1) || !validator.isFunction(value2)) {
    return false;
  }

  var function1Name = value1.substring(0, value1.indexOf('('));
  var function2Name = value2.substring(0, value2.indexOf('('));

  return function1Name === function2Name;
}

function backgroundPosition(validator, value1, value2) {
  if (!understandable(validator, value1, value2, 0, true) && !(validator.isBackgroundPositionKeyword(value2) || validator.isGlobal(value2))) {
    return false;
  } else if (validator.isVariable(value1) && validator.isVariable(value2)) {
    return true;
  } else if (validator.isBackgroundPositionKeyword(value2) || validator.isGlobal(value2)) {
    return true;
  }

  return unit(validator, value1, value2);
}

function backgroundSize(validator, value1, value2) {
  if (!understandable(validator, value1, value2, 0, true) && !(validator.isBackgroundSizeKeyword(value2) || validator.isGlobal(value2))) {
    return false;
  } else if (validator.isVariable(value1) && validator.isVariable(value2)) {
    return true;
  } else if (validator.isBackgroundSizeKeyword(value2) || validator.isGlobal(value2)) {
    return true;
  }

  return unit(validator, value1, value2);
}

function color(validator, value1, value2) {
  if (!understandable(validator, value1, value2, 0, true) && !validator.isColor(value2)) {
    return false;
  } else if (validator.isVariable(value1) && validator.isVariable(value2)) {
    return true;
  } else if (!validator.colorOpacity && (validator.isRgbColor(value1) || validator.isHslColor(value1))) {
    return false;
  } else if (!validator.colorOpacity && (validator.isRgbColor(value2) || validator.isHslColor(value2))) {
    return false;
  } else if (validator.isColor(value1) && validator.isColor(value2)) {
    return true;
  }

  return sameFunctionOrValue(validator, value1, value2);
}

function components(overrideCheckers) {
  return function (validator, value1, value2, position) {
    return overrideCheckers[position](validator, value1, value2);
  };
}

function fontFamily(validator, value1, value2) {
  return understandable(validator, value1, value2, 0, true);
}

function image(validator, value1, value2) {
  if (!understandable(validator, value1, value2, 0, true) && !validator.isImage(value2)) {
    return false;
  } else if (validator.isVariable(value1) && validator.isVariable(value2)) {
    return true;
  } else if (validator.isImage(value2)) {
    return true;
  } else if (validator.isImage(value1)) {
    return false;
  }

  return sameFunctionOrValue(validator, value1, value2);
}

function keyword(propertyName) {
  return function(validator, value1, value2) {
    if (!understandable(validator, value1, value2, 0, true) && !validator.isKeyword(propertyName)(value2)) {
      return false;
    } else if (validator.isVariable(value1) && validator.isVariable(value2)) {
      return true;
    }

    return validator.isKeyword(propertyName)(value2);
  };
}

function keywordWithGlobal(propertyName) {
  return function(validator, value1, value2) {
    if (!understandable(validator, value1, value2, 0, true) && !(validator.isKeyword(propertyName)(value2) || validator.isGlobal(value2))) {
      return false;
    } else if (validator.isVariable(value1) && validator.isVariable(value2)) {
      return true;
    }

    return validator.isKeyword(propertyName)(value2) || validator.isGlobal(value2);
  };
}

function propertyName(validator, value1, value2) {
  if (!understandable(validator, value1, value2, 0, true) && !validator.isIdentifier(value2)) {
    return false;
  } else if (validator.isVariable(value1) && validator.isVariable(value2)) {
    return true;
  }

  return validator.isIdentifier(value2);
}

function sameFunctionOrValue(validator, value1, value2) {
  return areSameFunction(validator, value1, value2) ?
    true :
    value1 === value2;
}

function textShadow(validator, value1, value2) {
  if (!understandable(validator, value1, value2, 0, true) && !(validator.isUnit(value2) || validator.isColor(value2) || validator.isGlobal(value2))) {
    return false;
  } else if (validator.isVariable(value1) && validator.isVariable(value2)) {
    return true;
  }

  return validator.isUnit(value2) || validator.isColor(value2) || validator.isGlobal(value2);
}

function time(validator, value1, value2) {
  if (!understandable(validator, value1, value2, 0, true) && !validator.isTime(value2)) {
    return false;
  } else if (validator.isVariable(value1) && validator.isVariable(value2)) {
    return true;
  } else if (validator.isTime(value1) && !validator.isTime(value2)) {
    return false;
  } else if (validator.isTime(value2)) {
    return true;
  } else if (validator.isTime(value1)) {
    return false;
  } else if (validator.isFunction(value1) && !validator.isPrefixed(value1) && validator.isFunction(value2) && !validator.isPrefixed(value2)) {
    return true;
  }

  return sameFunctionOrValue(validator, value1, value2);
}

function timingFunction(validator, value1, value2) {
  if (!understandable(validator, value1, value2, 0, true) && !(validator.isTimingFunction(value2) || validator.isGlobal(value2))) {
    return false;
  } else if (validator.isVariable(value1) && validator.isVariable(value2)) {
    return true;
  }

  return validator.isTimingFunction(value2) || validator.isGlobal(value2);
}

function unit(validator, value1, value2) {
  if (!understandable(validator, value1, value2, 0, true) && !validator.isUnit(value2)) {
    return false;
  } else if (validator.isVariable(value1) && validator.isVariable(value2)) {
    return true;
  } else if (validator.isUnit(value1) && !validator.isUnit(value2)) {
    return false;
  } else if (validator.isUnit(value2)) {
    return true;
  } else if (validator.isUnit(value1)) {
    return false;
  } else if (validator.isFunction(value1) && !validator.isPrefixed(value1) && validator.isFunction(value2) && !validator.isPrefixed(value2)) {
    return true;
  }

  return sameFunctionOrValue(validator, value1, value2);
}

function unitOrKeywordWithGlobal(propertyName) {
  var byKeyword = keywordWithGlobal(propertyName);

  return function(validator, value1, value2) {
    return unit(validator, value1, value2) || byKeyword(validator, value1, value2);
  };
}

function unitOrNumber(validator, value1, value2) {
  if (!understandable(validator, value1, value2, 0, true) && !(validator.isUnit(value2) || validator.isNumber(value2))) {
    return false;
  } else if (validator.isVariable(value1) && validator.isVariable(value2)) {
    return true;
  } else if ((validator.isUnit(value1) || validator.isNumber(value1)) && !(validator.isUnit(value2) || validator.isNumber(value2))) {
    return false;
  } else if (validator.isUnit(value2) || validator.isNumber(value2)) {
    return true;
  } else if (validator.isUnit(value1) || validator.isNumber(value1)) {
    return false;
  } else if (validator.isFunction(value1) && !validator.isPrefixed(value1) && validator.isFunction(value2) && !validator.isPrefixed(value2)) {
    return true;
  }

  return sameFunctionOrValue(validator, value1, value2);
}

function zIndex(validator, value1, value2) {
  if (!understandable(validator, value1, value2, 0, true) && !validator.isZIndex(value2)) {
    return false;
  } else if (validator.isVariable(value1) && validator.isVariable(value2)) {
    return true;
  }

  return validator.isZIndex(value2);
}

module.exports = {
  generic: {
    color: color,
    components: components,
    image: image,
    propertyName: propertyName,
    time: time,
    timingFunction: timingFunction,
    unit: unit,
    unitOrNumber: unitOrNumber
  },
  property: {
    animationDirection: keywordWithGlobal('animation-direction'),
    animationFillMode: keyword('animation-fill-mode'),
    animationIterationCount: animationIterationCount,
    animationName: animationName,
    animationPlayState: keywordWithGlobal('animation-play-state'),
    backgroundAttachment: keyword('background-attachment'),
    backgroundClip: keywordWithGlobal('background-clip'),
    backgroundOrigin: keyword('background-origin'),
    backgroundPosition: backgroundPosition,
    backgroundRepeat: keyword('background-repeat'),
    backgroundSize: backgroundSize,
    bottom: unitOrKeywordWithGlobal('bottom'),
    borderCollapse: keyword('border-collapse'),
    borderStyle: keywordWithGlobal('*-style'),
    clear: keywordWithGlobal('clear'),
    cursor: keywordWithGlobal('cursor'),
    display: keywordWithGlobal('display'),
    float: keywordWithGlobal('float'),
    left: unitOrKeywordWithGlobal('left'),
    fontFamily: fontFamily,
    fontStretch: keywordWithGlobal('font-stretch'),
    fontStyle: keywordWithGlobal('font-style'),
    fontVariant: keywordWithGlobal('font-variant'),
    fontWeight: keywordWithGlobal('font-weight'),
    listStyleType: keywordWithGlobal('list-style-type'),
    listStylePosition: keywordWithGlobal('list-style-position'),
    outlineStyle: keywordWithGlobal('*-style'),
    overflow: keywordWithGlobal('overflow'),
    position: keywordWithGlobal('position'),
    right: unitOrKeywordWithGlobal('right'),
    textAlign: keywordWithGlobal('text-align'),
    textDecoration: keywordWithGlobal('text-decoration'),
    textOverflow: keywordWithGlobal('text-overflow'),
    textShadow: textShadow,
    top: unitOrKeywordWithGlobal('top'),
    transform: sameFunctionOrValue,
    verticalAlign: unitOrKeywordWithGlobal('vertical-align'),
    visibility: keywordWithGlobal('visibility'),
    whiteSpace: keywordWithGlobal('white-space'),
    zIndex: zIndex
  }
};

},{"./properties/understandable":40}],20:[function(require,module,exports){
var wrapSingle = require('../wrap-for-optimizing').single;

var Token = require('../../tokenizer/token');

function deep(property) {
  var cloned = shallow(property);
  for (var i = property.components.length - 1; i >= 0; i--) {
    var component = shallow(property.components[i]);
    component.value = property.components[i].value.slice(0);
    cloned.components.unshift(component);
  }

  cloned.dirty = true;
  cloned.value = property.value.slice(0);

  return cloned;
}

function shallow(property) {
  var cloned = wrapSingle([
    Token.PROPERTY,
    [Token.PROPERTY_NAME, property.name]
  ]);
  cloned.important = property.important;
  cloned.hack = property.hack;
  cloned.unused = false;
  return cloned;
}

module.exports = {
  deep: deep,
  shallow: shallow
};

},{"../../tokenizer/token":84,"../wrap-for-optimizing":58}],21:[function(require,module,exports){
// Contains the interpretation of CSS properties, as used by the property optimizer

var breakUp = require('./break-up');
var canOverride = require('./can-override');
var restore = require('./restore');

var override = require('../../utils/override');

// Properties to process
// Extend this object in order to add support for more properties in the optimizer.
//
// Each key in this object represents a CSS property and should be an object.
// Such an object contains properties that describe how the represented CSS property should be handled.
// Possible options:
//
// * components: array (Only specify for shorthand properties.)
//   Contains the names of the granular properties this shorthand compacts.
//
// * canOverride: function
//   Returns whether two tokens of this property can be merged with each other.
//   This property has no meaning for shorthands.
//
// * defaultValue: string
//   Specifies the default value of the property according to the CSS standard.
//   For shorthand, this is used when every component is set to its default value, therefore it should be the shortest possible default value of all the components.
//
// * shortestValue: string
//   Specifies the shortest possible value the property can possibly have.
//   (Falls back to defaultValue if unspecified.)
//
// * breakUp: function (Only specify for shorthand properties.)
//   Breaks the shorthand up to its components.
//
// * restore: function (Only specify for shorthand properties.)
//   Puts the shorthand together from its components.
//
var compactable = {
  'animation': {
    canOverride: canOverride.generic.components([
      canOverride.generic.time,
      canOverride.generic.timingFunction,
      canOverride.generic.time,
      canOverride.property.animationIterationCount,
      canOverride.property.animationDirection,
      canOverride.property.animationFillMode,
      canOverride.property.animationPlayState,
      canOverride.property.animationName
    ]),
    components: [
      'animation-duration',
      'animation-timing-function',
      'animation-delay',
      'animation-iteration-count',
      'animation-direction',
      'animation-fill-mode',
      'animation-play-state',
      'animation-name'
    ],
    breakUp: breakUp.multiplex(breakUp.animation),
    defaultValue: 'none',
    restore: restore.multiplex(restore.withoutDefaults),
    shorthand: true,
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'animation-delay': {
    canOverride: canOverride.generic.time,
    componentOf: [
      'animation'
    ],
    defaultValue: '0s',
    intoMultiplexMode: 'real',
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'animation-direction': {
    canOverride: canOverride.property.animationDirection,
    componentOf: [
      'animation'
    ],
    defaultValue: 'normal',
    intoMultiplexMode: 'real',
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'animation-duration': {
    canOverride: canOverride.generic.time,
    componentOf: [
      'animation'
    ],
    defaultValue: '0s',
    intoMultiplexMode: 'real',
    keepUnlessDefault: 'animation-delay',
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'animation-fill-mode': {
    canOverride: canOverride.property.animationFillMode,
    componentOf: [
      'animation'
    ],
    defaultValue: 'none',
    intoMultiplexMode: 'real',
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'animation-iteration-count': {
    canOverride: canOverride.property.animationIterationCount,
    componentOf: [
      'animation'
    ],
    defaultValue: '1',
    intoMultiplexMode: 'real',
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'animation-name': {
    canOverride: canOverride.property.animationName,
    componentOf: [
      'animation'
    ],
    defaultValue: 'none',
    intoMultiplexMode: 'real',
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'animation-play-state': {
    canOverride: canOverride.property.animationPlayState,
    componentOf: [
      'animation'
    ],
    defaultValue: 'running',
    intoMultiplexMode: 'real',
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'animation-timing-function': {
    canOverride: canOverride.generic.timingFunction,
    componentOf: [
      'animation'
    ],
    defaultValue: 'ease',
    intoMultiplexMode: 'real',
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'background': {
    canOverride: canOverride.generic.components([
      canOverride.generic.image,
      canOverride.property.backgroundPosition,
      canOverride.property.backgroundSize,
      canOverride.property.backgroundRepeat,
      canOverride.property.backgroundAttachment,
      canOverride.property.backgroundOrigin,
      canOverride.property.backgroundClip,
      canOverride.generic.color
    ]),
    components: [
      'background-image',
      'background-position',
      'background-size',
      'background-repeat',
      'background-attachment',
      'background-origin',
      'background-clip',
      'background-color'
    ],
    breakUp: breakUp.multiplex(breakUp.background),
    defaultValue: '0 0',
    restore: restore.multiplex(restore.background),
    shortestValue: '0',
    shorthand: true
  },
  'background-attachment': {
    canOverride: canOverride.property.backgroundAttachment,
    componentOf: [
      'background'
    ],
    defaultValue: 'scroll',
    intoMultiplexMode: 'real'
  },
  'background-clip': {
    canOverride: canOverride.property.backgroundClip,
    componentOf: [
      'background'
    ],
    defaultValue: 'border-box',
    intoMultiplexMode: 'real',
    shortestValue: 'border-box'
  },
  'background-color': {
    canOverride: canOverride.generic.color,
    componentOf: [
      'background'
    ],
    defaultValue: 'transparent',
    intoMultiplexMode: 'real', // otherwise real color will turn into default since color appears in last multiplex only
    multiplexLastOnly: true,
    nonMergeableValue: 'none',
    shortestValue: 'red'
  },
  'background-image': {
    canOverride: canOverride.generic.image,
    componentOf: [
      'background'
    ],
    defaultValue: 'none',
    intoMultiplexMode: 'default'
  },
  'background-origin': {
    canOverride: canOverride.property.backgroundOrigin,
    componentOf: [
      'background'
    ],
    defaultValue: 'padding-box',
    intoMultiplexMode: 'real',
    shortestValue: 'border-box'
  },
  'background-position': {
    canOverride: canOverride.property.backgroundPosition,
    componentOf: [
      'background'
    ],
    defaultValue: ['0', '0'],
    doubleValues: true,
    intoMultiplexMode: 'real',
    shortestValue: '0'
  },
  'background-repeat': {
    canOverride: canOverride.property.backgroundRepeat,
    componentOf: [
      'background'
    ],
    defaultValue: ['repeat'],
    doubleValues: true,
    intoMultiplexMode: 'real'
  },
  'background-size': {
    canOverride: canOverride.property.backgroundSize,
    componentOf: [
      'background'
    ],
    defaultValue: ['auto'],
    doubleValues: true,
    intoMultiplexMode: 'real',
    shortestValue: '0 0'
  },
  'bottom': {
    canOverride: canOverride.property.bottom,
    defaultValue: 'auto'
  },
  'border': {
    breakUp: breakUp.border,
    canOverride: canOverride.generic.components([
      canOverride.generic.unit,
      canOverride.property.borderStyle,
      canOverride.generic.color
    ]),
    components: [
      'border-width',
      'border-style',
      'border-color'
    ],
    defaultValue: 'none',
    overridesShorthands: [
      'border-bottom',
      'border-left',
      'border-right',
      'border-top'
    ],
    restore: restore.withoutDefaults,
    shorthand: true,
    shorthandComponents: true
  },
  'border-bottom': {
    breakUp: breakUp.border,
    canOverride: canOverride.generic.components([
      canOverride.generic.unit,
      canOverride.property.borderStyle,
      canOverride.generic.color
    ]),
    components: [
      'border-bottom-width',
      'border-bottom-style',
      'border-bottom-color'
    ],
    defaultValue: 'none',
    restore: restore.withoutDefaults,
    shorthand: true
  },
  'border-bottom-color': {
    canOverride: canOverride.generic.color,
    componentOf: [
      'border-bottom',
      'border-color'
    ],
    defaultValue: 'none'
  },
  'border-bottom-left-radius': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'border-radius'
    ],
    defaultValue: '0',
    vendorPrefixes: [
      '-moz-',
      '-o-'
    ]
  },
  'border-bottom-right-radius': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'border-radius'
    ],
    defaultValue: '0',
    vendorPrefixes: [
      '-moz-',
      '-o-'
    ]
  },
  'border-bottom-style': {
    canOverride: canOverride.property.borderStyle,
    componentOf: [
      'border-bottom',
      'border-style'
    ],
    defaultValue: 'none'
  },
  'border-bottom-width': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'border-bottom',
      'border-width'
    ],
    defaultValue: 'medium',
    oppositeTo: 'border-top-width',
    shortestValue: '0'
  },
  'border-collapse': {
    canOverride: canOverride.property.borderCollapse,
    defaultValue: 'separate'
  },
  'border-color': {
    breakUp: breakUp.fourValues,
    canOverride: canOverride.generic.components([
      canOverride.generic.color,
      canOverride.generic.color,
      canOverride.generic.color,
      canOverride.generic.color
    ]),
    componentOf: [
      'border'
    ],
    components: [
      'border-top-color',
      'border-right-color',
      'border-bottom-color',
      'border-left-color'
    ],
    defaultValue: 'none',
    restore: restore.fourValues,
    shortestValue: 'red',
    shorthand: true
  },
  'border-left': {
    breakUp: breakUp.border,
    canOverride: canOverride.generic.components([
      canOverride.generic.unit,
      canOverride.property.borderStyle,
      canOverride.generic.color
    ]),
    components: [
      'border-left-width',
      'border-left-style',
      'border-left-color'
    ],
    defaultValue: 'none',
    restore: restore.withoutDefaults,
    shorthand: true
  },
  'border-left-color': {
    canOverride: canOverride.generic.color,
    componentOf: [
      'border-color',
      'border-left'
    ],
    defaultValue: 'none'
  },
  'border-left-style': {
    canOverride: canOverride.property.borderStyle,
    componentOf: [
      'border-left',
      'border-style'
    ],
    defaultValue: 'none'
  },
  'border-left-width': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'border-left',
      'border-width'
    ],
    defaultValue: 'medium',
    oppositeTo: 'border-right-width',
    shortestValue: '0'
  },
  'border-radius': {
    breakUp: breakUp.borderRadius,
    canOverride: canOverride.generic.components([
      canOverride.generic.unit,
      canOverride.generic.unit,
      canOverride.generic.unit,
      canOverride.generic.unit
    ]),
    components: [
      'border-top-left-radius',
      'border-top-right-radius',
      'border-bottom-right-radius',
      'border-bottom-left-radius'
    ],
    defaultValue: '0',
    restore: restore.borderRadius,
    shorthand: true,
    vendorPrefixes: [
      '-moz-',
      '-o-'
    ]
  },
  'border-right': {
    breakUp: breakUp.border,
    canOverride: canOverride.generic.components([
      canOverride.generic.unit,
      canOverride.property.borderStyle,
      canOverride.generic.color
    ]),
    components: [
      'border-right-width',
      'border-right-style',
      'border-right-color'
    ],
    defaultValue: 'none',
    restore: restore.withoutDefaults,
    shorthand: true
  },
  'border-right-color': {
    canOverride: canOverride.generic.color,
    componentOf: [
      'border-color',
      'border-right'
    ],
    defaultValue: 'none'
  },
  'border-right-style': {
    canOverride: canOverride.property.borderStyle,
    componentOf: [
      'border-right',
      'border-style'
    ],
    defaultValue: 'none'
  },
  'border-right-width': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'border-right',
      'border-width'
    ],
    defaultValue: 'medium',
    oppositeTo: 'border-left-width',
    shortestValue: '0'
  },
  'border-style': {
    breakUp: breakUp.fourValues,
    canOverride: canOverride.generic.components([
      canOverride.property.borderStyle,
      canOverride.property.borderStyle,
      canOverride.property.borderStyle,
      canOverride.property.borderStyle
    ]),
    componentOf: [
      'border'
    ],
    components: [
      'border-top-style',
      'border-right-style',
      'border-bottom-style',
      'border-left-style'
    ],
    defaultValue: 'none',
    restore: restore.fourValues,
    shorthand: true
  },
  'border-top': {
    breakUp: breakUp.border,
    canOverride: canOverride.generic.components([
      canOverride.generic.unit,
      canOverride.property.borderStyle,
      canOverride.generic.color
    ]),
    components: [
      'border-top-width',
      'border-top-style',
      'border-top-color'
    ],
    defaultValue: 'none',
    restore: restore.withoutDefaults,
    shorthand: true
  },
  'border-top-color': {
    canOverride: canOverride.generic.color,
    componentOf: [
      'border-color',
      'border-top'
    ],
    defaultValue: 'none'
  },
  'border-top-left-radius': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'border-radius'
    ],
    defaultValue: '0',
    vendorPrefixes: [
      '-moz-',
      '-o-'
    ]
  },
  'border-top-right-radius': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'border-radius'
    ],
    defaultValue: '0',
    vendorPrefixes: [
      '-moz-',
      '-o-'
    ]
  },
  'border-top-style': {
    canOverride: canOverride.property.borderStyle,
    componentOf: [
      'border-style',
      'border-top'
    ],
    defaultValue: 'none'
  },
  'border-top-width': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'border-top',
      'border-width'
    ],
    defaultValue: 'medium',
    oppositeTo: 'border-bottom-width',
    shortestValue: '0'
  },
  'border-width': {
    breakUp: breakUp.fourValues,
    canOverride: canOverride.generic.components([
      canOverride.generic.unit,
      canOverride.generic.unit,
      canOverride.generic.unit,
      canOverride.generic.unit
    ]),
    componentOf: [
      'border'
    ],
    components: [
      'border-top-width',
      'border-right-width',
      'border-bottom-width',
      'border-left-width'
    ],
    defaultValue: 'medium',
    restore: restore.fourValues,
    shortestValue: '0',
    shorthand: true
  },
  'clear': {
    canOverride: canOverride.property.clear,
    defaultValue: 'none'
  },
  'color': {
    canOverride: canOverride.generic.color,
    defaultValue: 'transparent',
    shortestValue: 'red'
  },
  'cursor': {
    canOverride: canOverride.property.cursor,
    defaultValue: 'auto'
  },
  'display': {
    canOverride: canOverride.property.display,
  },
  'float': {
    canOverride: canOverride.property.float,
    defaultValue: 'none'
  },
  'font': {
    breakUp: breakUp.font,
    canOverride: canOverride.generic.components([
      canOverride.property.fontStyle,
      canOverride.property.fontVariant,
      canOverride.property.fontWeight,
      canOverride.property.fontStretch,
      canOverride.generic.unit,
      canOverride.generic.unit,
      canOverride.property.fontFamily
    ]),
    components: [
      'font-style',
      'font-variant',
      'font-weight',
      'font-stretch',
      'font-size',
      'line-height',
      'font-family'
    ],
    restore: restore.font,
    shorthand: true
  },
  'font-family': {
    canOverride: canOverride.property.fontFamily,
    defaultValue: 'user|agent|specific'
  },
  'font-size': {
    canOverride: canOverride.generic.unit,
    defaultValue: 'medium',
    shortestValue: '0'
  },
  'font-stretch': {
    canOverride: canOverride.property.fontStretch,
    defaultValue: 'normal'
  },
  'font-style': {
    canOverride: canOverride.property.fontStyle,
    defaultValue: 'normal'
  },
  'font-variant': {
    canOverride: canOverride.property.fontVariant,
    defaultValue: 'normal'
  },
  'font-weight': {
    canOverride: canOverride.property.fontWeight,
    defaultValue: 'normal',
    shortestValue: '400'
  },
  'height': {
    canOverride: canOverride.generic.unit,
    defaultValue: 'auto',
    shortestValue: '0'
  },
  'left': {
    canOverride: canOverride.property.left,
    defaultValue: 'auto'
  },
  'line-height': {
    canOverride: canOverride.generic.unitOrNumber,
    defaultValue: 'normal',
    shortestValue: '0'
  },
  'list-style': {
    canOverride: canOverride.generic.components([
      canOverride.property.listStyleType,
      canOverride.property.listStylePosition,
      canOverride.property.listStyleImage
    ]),
    components: [
      'list-style-type',
      'list-style-position',
      'list-style-image'
    ],
    breakUp: breakUp.listStyle,
    restore: restore.withoutDefaults,
    defaultValue: 'outside', // can't use 'disc' because that'd override default 'decimal' for <ol>
    shortestValue: 'none',
    shorthand: true
  },
  'list-style-image' : {
    canOverride: canOverride.generic.image,
    componentOf: [
      'list-style'
    ],
    defaultValue: 'none'
  },
  'list-style-position' : {
    canOverride: canOverride.property.listStylePosition,
    componentOf: [
      'list-style'
    ],
    defaultValue: 'outside',
    shortestValue: 'inside'
  },
  'list-style-type' : {
    canOverride: canOverride.property.listStyleType,
    componentOf: [
      'list-style'
    ],
    // NOTE: we can't tell the real default value here, it's 'disc' for <ul> and 'decimal' for <ol>
    // this is a hack, but it doesn't matter because this value will be either overridden or
    // it will disappear at the final step anyway
    defaultValue: 'decimal|disc',
    shortestValue: 'none'
  },
  'margin': {
    breakUp: breakUp.fourValues,
    canOverride: canOverride.generic.components([
      canOverride.generic.unit,
      canOverride.generic.unit,
      canOverride.generic.unit,
      canOverride.generic.unit
    ]),
    components: [
      'margin-top',
      'margin-right',
      'margin-bottom',
      'margin-left'
    ],
    defaultValue: '0',
    restore: restore.fourValues,
    shorthand: true
  },
  'margin-bottom': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'margin'
    ],
    defaultValue: '0',
    oppositeTo: 'margin-top'
  },
  'margin-left': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'margin'
    ],
    defaultValue: '0',
    oppositeTo: 'margin-right'
  },
  'margin-right': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'margin'
    ],
    defaultValue: '0',
    oppositeTo: 'margin-left'
  },
  'margin-top': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'margin'
    ],
    defaultValue: '0',
    oppositeTo: 'margin-bottom'
  },
  'outline': {
    canOverride: canOverride.generic.components([
      canOverride.generic.color,
      canOverride.property.outlineStyle,
      canOverride.generic.unit
    ]),
    components: [
      'outline-color',
      'outline-style',
      'outline-width'
    ],
    breakUp: breakUp.outline,
    restore: restore.withoutDefaults,
    defaultValue: '0',
    shorthand: true
  },
  'outline-color': {
    canOverride: canOverride.generic.color,
    componentOf: [
      'outline'
    ],
    defaultValue: 'invert',
    shortestValue: 'red'
  },
  'outline-style': {
    canOverride: canOverride.property.outlineStyle,
    componentOf: [
      'outline'
    ],
    defaultValue: 'none'
  },
  'outline-width': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'outline'
    ],
    defaultValue: 'medium',
    shortestValue: '0'
  },
  'overflow': {
    canOverride: canOverride.property.overflow,
    defaultValue: 'visible'
  },
  'overflow-x': {
    canOverride: canOverride.property.overflow,
    defaultValue: 'visible'
  },
  'overflow-y': {
    canOverride: canOverride.property.overflow,
    defaultValue: 'visible'
  },
  'padding': {
    breakUp: breakUp.fourValues,
    canOverride: canOverride.generic.components([
      canOverride.generic.unit,
      canOverride.generic.unit,
      canOverride.generic.unit,
      canOverride.generic.unit
    ]),
    components: [
      'padding-top',
      'padding-right',
      'padding-bottom',
      'padding-left'
    ],
    defaultValue: '0',
    restore: restore.fourValues,
    shorthand: true
  },
  'padding-bottom': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'padding'
    ],
    defaultValue: '0',
    oppositeTo: 'padding-top'
  },
  'padding-left': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'padding'
    ],
    defaultValue: '0',
    oppositeTo: 'padding-right'
  },
  'padding-right': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'padding'
    ],
    defaultValue: '0',
    oppositeTo: 'padding-left'
  },
  'padding-top': {
    canOverride: canOverride.generic.unit,
    componentOf: [
      'padding'
    ],
    defaultValue: '0',
    oppositeTo: 'padding-bottom'
  },
  'position': {
    canOverride: canOverride.property.position,
    defaultValue: 'static'
  },
  'right': {
    canOverride: canOverride.property.right,
    defaultValue: 'auto'
  },
  'text-align': {
    canOverride: canOverride.property.textAlign,
    // NOTE: we can't tell the real default value here, as it depends on default text direction
    // this is a hack, but it doesn't matter because this value will be either overridden or
    // it will disappear anyway
    defaultValue: 'left|right'
  },
  'text-decoration': {
    canOverride: canOverride.property.textDecoration,
    defaultValue: 'none'
  },
  'text-overflow': {
    canOverride: canOverride.property.textOverflow,
    defaultValue: 'none'
  },
  'text-shadow': {
    canOverride: canOverride.property.textShadow,
    defaultValue: 'none'
  },
  'top': {
    canOverride: canOverride.property.top,
    defaultValue: 'auto'
  },
  'transform': {
    canOverride: canOverride.property.transform,
    vendorPrefixes: [
      '-moz-',
      '-ms-',
      '-webkit-'
    ]
  },
  'transition': {
    breakUp: breakUp.multiplex(breakUp.transition),
    canOverride: canOverride.generic.components([
      canOverride.property.transitionProperty,
      canOverride.generic.time,
      canOverride.generic.timingFunction,
      canOverride.generic.time
    ]),
    components: [
      'transition-property',
      'transition-duration',
      'transition-timing-function',
      'transition-delay'
    ],
    defaultValue: 'none',
    restore: restore.multiplex(restore.withoutDefaults),
    shorthand: true,
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'transition-delay': {
    canOverride: canOverride.generic.time,
    componentOf: [
      'transition'
    ],
    defaultValue: '0s',
    intoMultiplexMode: 'real',
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'transition-duration': {
    canOverride: canOverride.generic.time,
    componentOf: [
      'transition'
    ],
    defaultValue: '0s',
    intoMultiplexMode: 'real',
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'transition-property': {
    canOverride: canOverride.generic.propertyName,
    componentOf: [
      'transition'
    ],
    defaultValue: 'all',
    intoMultiplexMode: 'placeholder',
    placeholderValue: '_', // it's a short value that won't match any property and still be a valid `transition-property`
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'transition-timing-function': {
    canOverride: canOverride.generic.timingFunction,
    componentOf: [
      'transition'
    ],
    defaultValue: 'ease',
    intoMultiplexMode: 'real',
    vendorPrefixes: [
      '-moz-',
      '-o-',
      '-webkit-'
    ]
  },
  'vertical-align': {
    canOverride: canOverride.property.verticalAlign,
    defaultValue: 'baseline'
  },
  'visibility': {
    canOverride: canOverride.property.visibility,
    defaultValue: 'visible'
  },
  'white-space': {
    canOverride: canOverride.property.whiteSpace,
    defaultValue: 'normal'
  },
  'width': {
    canOverride: canOverride.generic.unit,
    defaultValue: 'auto',
    shortestValue: '0'
  },
  'z-index': {
    canOverride: canOverride.property.zIndex,
    defaultValue: 'auto'
  }
};

function cloneDescriptor(propertyName, prefix) {
  var clonedDescriptor = override(compactable[propertyName], {});

  if ('componentOf' in clonedDescriptor) {
    clonedDescriptor.componentOf = clonedDescriptor.componentOf.map(function (shorthandName) {
      return prefix + shorthandName;
    });
  }

  if ('components' in clonedDescriptor) {
    clonedDescriptor.components = clonedDescriptor.components.map(function (longhandName) {
      return prefix + longhandName;
    });
  }

  if ('keepUnlessDefault' in clonedDescriptor) {
    clonedDescriptor.keepUnlessDefault = prefix + clonedDescriptor.keepUnlessDefault;
  }

  return clonedDescriptor;
}

// generate vendor-prefixed properties
var vendorPrefixedCompactable = {};

for (var propertyName in compactable) {
  var descriptor = compactable[propertyName];

  if (!('vendorPrefixes' in descriptor)) {
    continue;
  }

  for (var i = 0; i < descriptor.vendorPrefixes.length; i++) {
    var prefix = descriptor.vendorPrefixes[i];
    var clonedDescriptor = cloneDescriptor(propertyName, prefix);
    delete clonedDescriptor.vendorPrefixes;

    vendorPrefixedCompactable[prefix + propertyName] = clonedDescriptor;
  }

  delete descriptor.vendorPrefixes;
}

module.exports = override(compactable, vendorPrefixedCompactable);

},{"../../utils/override":95,"./break-up":18,"./can-override":19,"./restore":49}],22:[function(require,module,exports){
// This extractor is used in level 2 optimizations
// IMPORTANT: Mind Token class and this code is not related!
// Properties will be tokenized in one step, see #429

var Token = require('../../tokenizer/token');
var serializeRules = require('../../writer/one-time').rules;
var serializeValue = require('../../writer/one-time').value;

function extractProperties(token) {
  var properties = [];
  var inSpecificSelector;
  var property;
  var name;
  var value;
  var i, l;

  if (token[0] == Token.RULE) {
    inSpecificSelector = !/[\.\+>~]/.test(serializeRules(token[1]));

    for (i = 0, l = token[2].length; i < l; i++) {
      property = token[2][i];

      if (property[0] != Token.PROPERTY)
        continue;

      name = property[1][1];
      if (name.length === 0)
        continue;

      if (name.indexOf('--') === 0)
        continue;

      value = serializeValue(property, i);

      properties.push([
        name,
        value,
        findNameRoot(name),
        token[2][i],
        name + ':' + value,
        token[1],
        inSpecificSelector
      ]);
    }
  } else if (token[0] == Token.NESTED_BLOCK) {
    for (i = 0, l = token[2].length; i < l; i++) {
      properties = properties.concat(extractProperties(token[2][i]));
    }
  }

  return properties;
}

function findNameRoot(name) {
  if (name == 'list-style')
    return name;
  if (name.indexOf('-radius') > 0)
    return 'border-radius';
  if (name == 'border-collapse' || name == 'border-spacing' || name == 'border-image')
    return name;
  if (name.indexOf('border-') === 0 && /^border\-\w+\-\w+$/.test(name))
    return name.match(/border\-\w+/)[0];
  if (name.indexOf('border-') === 0 && /^border\-\w+$/.test(name))
    return 'border';
  if (name.indexOf('text-') === 0)
    return name;
  if (name == '-chrome-')
    return name;

  return name.replace(/^\-\w+\-/, '').match(/([a-zA-Z]+)/)[0].toLowerCase();
}

module.exports = extractProperties;

},{"../../tokenizer/token":84,"../../writer/one-time":98}],23:[function(require,module,exports){
function InvalidPropertyError(message) {
  this.name = 'InvalidPropertyError';
  this.message = message;
  this.stack = (new Error()).stack;
}

InvalidPropertyError.prototype = Object.create(Error.prototype);
InvalidPropertyError.prototype.constructor = InvalidPropertyError;

module.exports = InvalidPropertyError;

},{}],24:[function(require,module,exports){
var Marker = require('../../tokenizer/marker');
var split = require('../../utils/split');

var DEEP_SELECTOR_PATTERN = /\/deep\//;
var DOUBLE_COLON_PATTERN = /^::/;
var NOT_PSEUDO = ':not';
var PSEUDO_CLASSES_WITH_ARGUMENTS = [
  ':dir',
  ':lang',
  ':not',
  ':nth-child',
  ':nth-last-child',
  ':nth-last-of-type',
  ':nth-of-type'
];
var RELATION_PATTERN = /[>\+~]/;
var UNMIXABLE_PSEUDO_CLASSES = [
  ':after',
  ':before',
  ':first-letter',
  ':first-line',
  ':lang'
];
var UNMIXABLE_PSEUDO_ELEMENTS = [
  '::after',
  '::before',
  '::first-letter',
  '::first-line'
];

var Level = {
  DOUBLE_QUOTE: 'double-quote',
  SINGLE_QUOTE: 'single-quote',
  ROOT: 'root'
};

function isMergeable(selector, mergeablePseudoClasses, mergeablePseudoElements, multiplePseudoMerging) {
  var singleSelectors = split(selector, Marker.COMMA);
  var singleSelector;
  var i, l;

  for (i = 0, l = singleSelectors.length; i < l; i++) {
    singleSelector = singleSelectors[i];

    if (singleSelector.length === 0 ||
        isDeepSelector(singleSelector) ||
        (singleSelector.indexOf(Marker.COLON) > -1 && !areMergeable(singleSelector, extractPseudoFrom(singleSelector), mergeablePseudoClasses, mergeablePseudoElements, multiplePseudoMerging))) {
      return false;
    }
  }

  return true;
}

function isDeepSelector(selector) {
  return DEEP_SELECTOR_PATTERN.test(selector);
}

function extractPseudoFrom(selector) {
  var list = [];
  var character;
  var buffer = [];
  var level = Level.ROOT;
  var roundBracketLevel = 0;
  var isQuoted;
  var isEscaped;
  var isPseudo = false;
  var isRelation;
  var wasColon = false;
  var index;
  var len;

  for (index = 0, len = selector.length; index < len; index++) {
    character = selector[index];

    isRelation = !isEscaped && RELATION_PATTERN.test(character);
    isQuoted = level == Level.DOUBLE_QUOTE || level == Level.SINGLE_QUOTE;

    if (isEscaped) {
      buffer.push(character);
    } else if (character == Marker.DOUBLE_QUOTE && level == Level.ROOT) {
      buffer.push(character);
      level = Level.DOUBLE_QUOTE;
    } else if (character == Marker.DOUBLE_QUOTE && level == Level.DOUBLE_QUOTE) {
      buffer.push(character);
      level = Level.ROOT;
    } else if (character == Marker.SINGLE_QUOTE && level == Level.ROOT) {
      buffer.push(character);
      level = Level.SINGLE_QUOTE;
    } else if (character == Marker.SINGLE_QUOTE && level == Level.SINGLE_QUOTE) {
      buffer.push(character);
      level = Level.ROOT;
    } else if (isQuoted) {
      buffer.push(character);
    } else if (character == Marker.OPEN_ROUND_BRACKET) {
      buffer.push(character);
      roundBracketLevel++;
    } else if (character == Marker.CLOSE_ROUND_BRACKET && roundBracketLevel == 1 && isPseudo) {
      buffer.push(character);
      list.push(buffer.join(''));
      roundBracketLevel--;
      buffer = [];
      isPseudo = false;
    } else if (character == Marker.CLOSE_ROUND_BRACKET) {
      buffer.push(character);
      roundBracketLevel--;
    } else if (character == Marker.COLON && roundBracketLevel === 0 && isPseudo && !wasColon) {
      list.push(buffer.join(''));
      buffer = [];
      buffer.push(character);
    } else if (character == Marker.COLON && roundBracketLevel === 0 && !wasColon) {
      buffer = [];
      buffer.push(character);
      isPseudo = true;
    } else if (character == Marker.SPACE && roundBracketLevel === 0 && isPseudo) {
      list.push(buffer.join(''));
      buffer = [];
      isPseudo = false;
    } else if (isRelation && roundBracketLevel === 0 && isPseudo) {
      list.push(buffer.join(''));
      buffer = [];
      isPseudo = false;
    } else {
      buffer.push(character);
    }

    isEscaped = character == Marker.BACK_SLASH;
    wasColon = character == Marker.COLON;
  }

  if (buffer.length > 0 && isPseudo) {
    list.push(buffer.join(''));
  }

  return list;
}

function areMergeable(selector, matches, mergeablePseudoClasses, mergeablePseudoElements, multiplePseudoMerging) {
  return areAllowed(matches, mergeablePseudoClasses, mergeablePseudoElements) &&
    needArguments(matches) &&
    (matches.length < 2 || !someIncorrectlyChained(selector, matches)) &&
    (matches.length < 2 || multiplePseudoMerging && allMixable(matches));
}

function areAllowed(matches, mergeablePseudoClasses, mergeablePseudoElements) {
  var match;
  var name;
  var i, l;

  for (i = 0, l = matches.length; i < l; i++) {
    match = matches[i];
    name = match.indexOf(Marker.OPEN_ROUND_BRACKET) > -1 ?
      match.substring(0, match.indexOf(Marker.OPEN_ROUND_BRACKET)) :
      match;

    if (mergeablePseudoClasses.indexOf(name) === -1 && mergeablePseudoElements.indexOf(name) === -1) {
      return false;
    }
  }

  return true;
}

function needArguments(matches) {
  var match;
  var name;
  var bracketOpensAt;
  var hasArguments;
  var i, l;

  for (i = 0, l = matches.length; i < l; i++) {
    match = matches[i];

    bracketOpensAt = match.indexOf(Marker.OPEN_ROUND_BRACKET);
    hasArguments = bracketOpensAt > -1;
    name = hasArguments ?
      match.substring(0, bracketOpensAt) :
      match;

    if (hasArguments && PSEUDO_CLASSES_WITH_ARGUMENTS.indexOf(name) == -1) {
      return false;
    }

    if (!hasArguments && PSEUDO_CLASSES_WITH_ARGUMENTS.indexOf(name) > -1) {
      return false;
    }
  }

  return true;
}

function someIncorrectlyChained(selector, matches) {
  var positionInSelector = 0;
  var match;
  var matchAt;
  var nextMatch;
  var nextMatchAt;
  var name;
  var nextName;
  var areChained;
  var i, l;

  for (i = 0, l = matches.length; i < l; i++) {
    match = matches[i];
    nextMatch = matches[i + 1];

    if (!nextMatch) {
      break;
    }

    matchAt = selector.indexOf(match, positionInSelector);
    nextMatchAt = selector.indexOf(match, matchAt + 1);
    positionInSelector = nextMatchAt;
    areChained = matchAt + match.length == nextMatchAt;

    if (areChained) {
      name = match.indexOf(Marker.OPEN_ROUND_BRACKET) > -1 ?
        match.substring(0, match.indexOf(Marker.OPEN_ROUND_BRACKET)) :
        match;
      nextName = nextMatch.indexOf(Marker.OPEN_ROUND_BRACKET) > -1 ?
        nextMatch.substring(0, nextMatch.indexOf(Marker.OPEN_ROUND_BRACKET)) :
        nextMatch;

      if (name != NOT_PSEUDO || nextName != NOT_PSEUDO) {
        return true;
      }
    }
  }

  return false;
}

function allMixable(matches) {
  var unmixableMatches = 0;
  var match;
  var i, l;

  for (i = 0, l = matches.length; i < l; i++) {
    match = matches[i];

    if (isPseudoElement(match)) {
      unmixableMatches += UNMIXABLE_PSEUDO_ELEMENTS.indexOf(match) > -1 ? 1 : 0;
    } else {
      unmixableMatches += UNMIXABLE_PSEUDO_CLASSES.indexOf(match) > -1 ? 1 : 0;
    }

    if (unmixableMatches > 1) {
      return false;
    }
  }

  return true;
}

function isPseudoElement(pseudo) {
  return DOUBLE_COLON_PATTERN.test(pseudo);
}

module.exports = isMergeable;

},{"../../tokenizer/marker":83,"../../utils/split":96}],25:[function(require,module,exports){
var isMergeable = require('./is-mergeable');

var optimizeProperties = require('./properties/optimize');

var sortSelectors = require('../level-1/sort-selectors');
var tidyRules = require('../level-1/tidy-rules');

var OptimizationLevel = require('../../options/optimization-level').OptimizationLevel;

var serializeBody = require('../../writer/one-time').body;
var serializeRules = require('../../writer/one-time').rules;

var Token = require('../../tokenizer/token');

function mergeAdjacent(tokens, context) {
  var lastToken = [null, [], []];
  var options = context.options;
  var adjacentSpace = options.compatibility.selectors.adjacentSpace;
  var selectorsSortingMethod = options.level[OptimizationLevel.One].selectorsSortingMethod;
  var mergeablePseudoClasses = options.compatibility.selectors.mergeablePseudoClasses;
  var mergeablePseudoElements = options.compatibility.selectors.mergeablePseudoElements;
  var mergeLimit = options.compatibility.selectors.mergeLimit;
  var multiplePseudoMerging = options.compatibility.selectors.multiplePseudoMerging;

  for (var i = 0, l = tokens.length; i < l; i++) {
    var token = tokens[i];

    if (token[0] != Token.RULE) {
      lastToken = [null, [], []];
      continue;
    }

    if (lastToken[0] == Token.RULE && serializeRules(token[1]) == serializeRules(lastToken[1])) {
      Array.prototype.push.apply(lastToken[2], token[2]);
      optimizeProperties(lastToken[2], true, true, context);
      token[2] = [];
    } else if (lastToken[0] == Token.RULE && serializeBody(token[2]) == serializeBody(lastToken[2]) &&
        isMergeable(serializeRules(token[1]), mergeablePseudoClasses, mergeablePseudoElements, multiplePseudoMerging) &&
        isMergeable(serializeRules(lastToken[1]), mergeablePseudoClasses, mergeablePseudoElements, multiplePseudoMerging) &&
        lastToken[1].length < mergeLimit) {
      lastToken[1] = tidyRules(lastToken[1].concat(token[1]), false, adjacentSpace, false, context.warnings);
      lastToken[1] = lastToken.length > 1 ? sortSelectors(lastToken[1], selectorsSortingMethod) : lastToken[1];
      token[2] = [];
    } else {
      lastToken = token;
    }
  }
}

module.exports = mergeAdjacent;

},{"../../options/optimization-level":65,"../../tokenizer/token":84,"../../writer/one-time":98,"../level-1/sort-selectors":14,"../level-1/tidy-rules":17,"./is-mergeable":24,"./properties/optimize":36}],26:[function(require,module,exports){
var canReorder = require('./reorderable').canReorder;
var canReorderSingle = require('./reorderable').canReorderSingle;
var extractProperties = require('./extract-properties');
var rulesOverlap = require('./rules-overlap');

var serializeRules = require('../../writer/one-time').rules;
var OptimizationLevel = require('../../options/optimization-level').OptimizationLevel;
var Token = require('../../tokenizer/token');

function mergeMediaQueries(tokens, context) {
  var mergeSemantically = context.options.level[OptimizationLevel.Two].mergeSemantically;
  var specificityCache = context.cache.specificity;
  var candidates = {};
  var reduced = [];

  for (var i = tokens.length - 1; i >= 0; i--) {
    var token = tokens[i];
    if (token[0] != Token.NESTED_BLOCK) {
      continue;
    }

    var key = serializeRules(token[1]);
    var candidate = candidates[key];
    if (!candidate) {
      candidate = [];
      candidates[key] = candidate;
    }

    candidate.push(i);
  }

  for (var name in candidates) {
    var positions = candidates[name];

    positionLoop:
    for (var j = positions.length - 1; j > 0; j--) {
      var positionOne = positions[j];
      var tokenOne = tokens[positionOne];
      var positionTwo = positions[j - 1];
      var tokenTwo = tokens[positionTwo];

      directionLoop:
      for (var direction = 1; direction >= -1; direction -= 2) {
        var topToBottom = direction == 1;
        var from = topToBottom ? positionOne + 1 : positionTwo - 1;
        var to = topToBottom ? positionTwo : positionOne;
        var delta = topToBottom ? 1 : -1;
        var source = topToBottom ? tokenOne : tokenTwo;
        var target = topToBottom ? tokenTwo : tokenOne;
        var movedProperties = extractProperties(source);

        while (from != to) {
          var traversedProperties = extractProperties(tokens[from]);
          from += delta;

          if (mergeSemantically && allSameRulePropertiesCanBeReordered(movedProperties, traversedProperties, specificityCache)) {
            continue;
          }

          if (!canReorder(movedProperties, traversedProperties, specificityCache))
            continue directionLoop;
        }

        target[2] = topToBottom ?
          source[2].concat(target[2]) :
          target[2].concat(source[2]);
        source[2] = [];

        reduced.push(target);
        continue positionLoop;
      }
    }
  }

  return reduced;
}

function allSameRulePropertiesCanBeReordered(movedProperties, traversedProperties, specificityCache) {
  var movedProperty;
  var movedRule;
  var traversedProperty;
  var traversedRule;
  var i, l;
  var j, m;

  for (i = 0, l = movedProperties.length; i < l; i++) {
    movedProperty = movedProperties[i];
    movedRule = movedProperty[5];

    for (j = 0, m = traversedProperties.length; j < m; j++) {
      traversedProperty = traversedProperties[j];
      traversedRule = traversedProperty[5];

      if (rulesOverlap(movedRule, traversedRule, true) && !canReorderSingle(movedProperty, traversedProperty, specificityCache)) {
        return false;
      }
    }
  }

  return true;
}

module.exports = mergeMediaQueries;

},{"../../options/optimization-level":65,"../../tokenizer/token":84,"../../writer/one-time":98,"./extract-properties":22,"./reorderable":47,"./rules-overlap":51}],27:[function(require,module,exports){
var isMergeable = require('./is-mergeable');

var sortSelectors = require('../level-1/sort-selectors');
var tidyRules = require('../level-1/tidy-rules');

var OptimizationLevel = require('../../options/optimization-level').OptimizationLevel;

var serializeBody = require('../../writer/one-time').body;
var serializeRules = require('../../writer/one-time').rules;

var Token = require('../../tokenizer/token');

function unsafeSelector(value) {
  return /\.|\*| :/.test(value);
}

function isBemElement(token) {
  var asString = serializeRules(token[1]);
  return asString.indexOf('__') > -1 || asString.indexOf('--') > -1;
}

function withoutModifier(selector) {
  return selector.replace(/--[^ ,>\+~:]+/g, '');
}

function removeAnyUnsafeElements(left, candidates) {
  var leftSelector = withoutModifier(serializeRules(left[1]));

  for (var body in candidates) {
    var right = candidates[body];
    var rightSelector = withoutModifier(serializeRules(right[1]));

    if (rightSelector.indexOf(leftSelector) > -1 || leftSelector.indexOf(rightSelector) > -1)
      delete candidates[body];
  }
}

function mergeNonAdjacentByBody(tokens, context) {
  var options = context.options;
  var mergeSemantically = options.level[OptimizationLevel.Two].mergeSemantically;
  var adjacentSpace = options.compatibility.selectors.adjacentSpace;
  var selectorsSortingMethod = options.level[OptimizationLevel.One].selectorsSortingMethod;
  var mergeablePseudoClasses = options.compatibility.selectors.mergeablePseudoClasses;
  var mergeablePseudoElements = options.compatibility.selectors.mergeablePseudoElements;
  var multiplePseudoMerging = options.compatibility.selectors.multiplePseudoMerging;
  var candidates = {};

  for (var i = tokens.length - 1; i >= 0; i--) {
    var token = tokens[i];
    if (token[0] != Token.RULE)
      continue;

    if (token[2].length > 0 && (!mergeSemantically && unsafeSelector(serializeRules(token[1]))))
      candidates = {};

    if (token[2].length > 0 && mergeSemantically && isBemElement(token))
      removeAnyUnsafeElements(token, candidates);

    var candidateBody = serializeBody(token[2]);
    var oldToken = candidates[candidateBody];
    if (oldToken &&
        isMergeable(serializeRules(token[1]), mergeablePseudoClasses, mergeablePseudoElements, multiplePseudoMerging) &&
        isMergeable(serializeRules(oldToken[1]), mergeablePseudoClasses, mergeablePseudoElements, multiplePseudoMerging)) {

      if (token[2].length > 0) {
        token[1] = tidyRules(oldToken[1].concat(token[1]), false, adjacentSpace, false, context.warnings);
        token[1] = token[1].length > 1 ? sortSelectors(token[1], selectorsSortingMethod) : token[1];
      } else {
        token[1] = oldToken[1].concat(token[1]);
      }

      oldToken[2] = [];
      candidates[candidateBody] = null;
    }

    candidates[serializeBody(token[2])] = token;
  }
}

module.exports = mergeNonAdjacentByBody;

},{"../../options/optimization-level":65,"../../tokenizer/token":84,"../../writer/one-time":98,"../level-1/sort-selectors":14,"../level-1/tidy-rules":17,"./is-mergeable":24}],28:[function(require,module,exports){
var canReorder = require('./reorderable').canReorder;
var extractProperties = require('./extract-properties');

var optimizeProperties = require('./properties/optimize');

var serializeRules = require('../../writer/one-time').rules;

var Token = require('../../tokenizer/token');

function mergeNonAdjacentBySelector(tokens, context) {
  var specificityCache = context.cache.specificity;
  var allSelectors = {};
  var repeatedSelectors = [];
  var i;

  for (i = tokens.length - 1; i >= 0; i--) {
    if (tokens[i][0] != Token.RULE)
      continue;
    if (tokens[i][2].length === 0)
      continue;

    var selector = serializeRules(tokens[i][1]);
    allSelectors[selector] = [i].concat(allSelectors[selector] || []);

    if (allSelectors[selector].length == 2)
      repeatedSelectors.push(selector);
  }

  for (i = repeatedSelectors.length - 1; i >= 0; i--) {
    var positions = allSelectors[repeatedSelectors[i]];

    selectorIterator:
    for (var j = positions.length - 1; j > 0; j--) {
      var positionOne = positions[j - 1];
      var tokenOne = tokens[positionOne];
      var positionTwo = positions[j];
      var tokenTwo = tokens[positionTwo];

      directionIterator:
      for (var direction = 1; direction >= -1; direction -= 2) {
        var topToBottom = direction == 1;
        var from = topToBottom ? positionOne + 1 : positionTwo - 1;
        var to = topToBottom ? positionTwo : positionOne;
        var delta = topToBottom ? 1 : -1;
        var moved = topToBottom ? tokenOne : tokenTwo;
        var target = topToBottom ? tokenTwo : tokenOne;
        var movedProperties = extractProperties(moved);

        while (from != to) {
          var traversedProperties = extractProperties(tokens[from]);
          from += delta;

          // traversed then moved as we move selectors towards the start
          var reorderable = topToBottom ?
            canReorder(movedProperties, traversedProperties, specificityCache) :
            canReorder(traversedProperties, movedProperties, specificityCache);

          if (!reorderable && !topToBottom)
            continue selectorIterator;
          if (!reorderable && topToBottom)
            continue directionIterator;
        }

        if (topToBottom) {
          Array.prototype.push.apply(moved[2], target[2]);
          target[2] = moved[2];
        } else {
          Array.prototype.push.apply(target[2], moved[2]);
        }

        optimizeProperties(target[2], true, true, context);
        moved[2] = [];
      }
    }
  }
}

module.exports = mergeNonAdjacentBySelector;

},{"../../tokenizer/token":84,"../../writer/one-time":98,"./extract-properties":22,"./properties/optimize":36,"./reorderable":47}],29:[function(require,module,exports){
var mergeAdjacent = require('./merge-adjacent');
var mergeMediaQueries = require('./merge-media-queries');
var mergeNonAdjacentByBody = require('./merge-non-adjacent-by-body');
var mergeNonAdjacentBySelector = require('./merge-non-adjacent-by-selector');
var reduceNonAdjacent = require('./reduce-non-adjacent');
var removeDuplicateFontAtRules = require('./remove-duplicate-font-at-rules');
var removeDuplicateMediaQueries = require('./remove-duplicate-media-queries');
var removeDuplicates = require('./remove-duplicates');
var removeUnusedAtRules = require('./remove-unused-at-rules');
var restructure = require('./restructure');

var optimizeProperties = require('./properties/optimize');

var OptimizationLevel = require('../../options/optimization-level').OptimizationLevel;

var Token = require('../../tokenizer/token');

function removeEmpty(tokens) {
  for (var i = 0, l = tokens.length; i < l; i++) {
    var token = tokens[i];
    var isEmpty = false;

    switch (token[0]) {
      case Token.RULE:
        isEmpty = token[1].length === 0 || token[2].length === 0;
        break;
      case Token.NESTED_BLOCK:
        removeEmpty(token[2]);
        isEmpty = token[2].length === 0;
        break;
      case Token.AT_RULE:
        isEmpty = token[1].length === 0;
        break;
      case Token.AT_RULE_BLOCK:
        isEmpty = token[2].length === 0;
    }

    if (isEmpty) {
      tokens.splice(i, 1);
      i--;
      l--;
    }
  }
}

function recursivelyOptimizeBlocks(tokens, context) {
  for (var i = 0, l = tokens.length; i < l; i++) {
    var token = tokens[i];

    if (token[0] == Token.NESTED_BLOCK) {
      var isKeyframes = /@(-moz-|-o-|-webkit-)?keyframes/.test(token[1][0][1]);
      level2Optimize(token[2], context, !isKeyframes);
    }
  }
}

function recursivelyOptimizeProperties(tokens, context) {
  for (var i = 0, l = tokens.length; i < l; i++) {
    var token = tokens[i];

    switch (token[0]) {
      case Token.RULE:
        optimizeProperties(token[2], true, true, context);
        break;
      case Token.NESTED_BLOCK:
        recursivelyOptimizeProperties(token[2], context);
    }
  }
}

function level2Optimize(tokens, context, withRestructuring) {
  var levelOptions = context.options.level[OptimizationLevel.Two];
  var reduced;
  var i;

  recursivelyOptimizeBlocks(tokens, context);
  recursivelyOptimizeProperties(tokens, context);

  if (levelOptions.removeDuplicateRules) {
    removeDuplicates(tokens, context);
  }

  if (levelOptions.mergeAdjacentRules) {
    mergeAdjacent(tokens, context);
  }

  if (levelOptions.reduceNonAdjacentRules) {
    reduceNonAdjacent(tokens, context);
  }

  if (levelOptions.mergeNonAdjacentRules && levelOptions.mergeNonAdjacentRules != 'body') {
    mergeNonAdjacentBySelector(tokens, context);
  }

  if (levelOptions.mergeNonAdjacentRules && levelOptions.mergeNonAdjacentRules != 'selector') {
    mergeNonAdjacentByBody(tokens, context);
  }

  if (levelOptions.restructureRules && levelOptions.mergeAdjacentRules && withRestructuring) {
    restructure(tokens, context);
    mergeAdjacent(tokens, context);
  }

  if (levelOptions.restructureRules && !levelOptions.mergeAdjacentRules && withRestructuring) {
    restructure(tokens, context);
  }

  if (levelOptions.removeDuplicateFontRules) {
    removeDuplicateFontAtRules(tokens, context);
  }

  if (levelOptions.removeDuplicateMediaBlocks) {
    removeDuplicateMediaQueries(tokens, context);
  }

  if (levelOptions.removeUnusedAtRules) {
    removeUnusedAtRules(tokens, context);
  }

  if (levelOptions.mergeMedia) {
    reduced = mergeMediaQueries(tokens, context);
    for (i = reduced.length - 1; i >= 0; i--) {
      level2Optimize(reduced[i][2], context, false);
    }
  }

  if (levelOptions.removeEmpty) {
    removeEmpty(tokens);
  }

  return tokens;
}

module.exports = level2Optimize;

},{"../../options/optimization-level":65,"../../tokenizer/token":84,"./merge-adjacent":25,"./merge-media-queries":26,"./merge-non-adjacent-by-body":27,"./merge-non-adjacent-by-selector":28,"./properties/optimize":36,"./reduce-non-adjacent":42,"./remove-duplicate-font-at-rules":43,"./remove-duplicate-media-queries":44,"./remove-duplicates":45,"./remove-unused-at-rules":46,"./restructure":50}],30:[function(require,module,exports){
var Marker = require('../../../tokenizer/marker');

function everyValuesPair(fn, left, right) {
  var leftSize = left.value.length;
  var rightSize = right.value.length;
  var total = Math.max(leftSize, rightSize);
  var lowerBound = Math.min(leftSize, rightSize) - 1;
  var leftValue;
  var rightValue;
  var position;

  for (position = 0; position < total; position++) {
    leftValue = left.value[position] && left.value[position][1] || leftValue;
    rightValue = right.value[position] && right.value[position][1] || rightValue;

    if (leftValue == Marker.COMMA || rightValue == Marker.COMMA) {
      continue;
    }

    if (!fn(leftValue, rightValue, position, position <= lowerBound)) {
      return false;
    }
  }

  return true;
}

module.exports = everyValuesPair;

},{"../../../tokenizer/marker":83}],31:[function(require,module,exports){
var compactable = require('../compactable');

function findComponentIn(shorthand, longhand) {
  var comparator = nameComparator(longhand);

  return findInDirectComponents(shorthand, comparator) || findInSubComponents(shorthand, comparator);
}

function nameComparator(to) {
  return function (property) {
    return to.name === property.name;
  };
}

function findInDirectComponents(shorthand, comparator) {
  return shorthand.components.filter(comparator)[0];
}

function findInSubComponents(shorthand, comparator) {
  var shorthandComponent;
  var longhandMatch;
  var i, l;

  if (!compactable[shorthand.name].shorthandComponents) {
    return;
  }

  for (i = 0, l = shorthand.components.length; i < l; i++) {
    shorthandComponent = shorthand.components[i];
    longhandMatch = findInDirectComponents(shorthandComponent, comparator);

    if (longhandMatch) {
      return longhandMatch;
    }
  }

  return;
}

module.exports = findComponentIn;

},{"../compactable":21}],32:[function(require,module,exports){
function hasInherit(property) {
  for (var i = property.value.length - 1; i >= 0; i--) {
    if (property.value[i][1] == 'inherit')
      return true;
  }

  return false;
}

module.exports = hasInherit;

},{}],33:[function(require,module,exports){
var compactable = require('../compactable');

function isComponentOf(property1, property2, shallow) {
  return isDirectComponentOf(property1, property2) ||
    !shallow && !!compactable[property1.name].shorthandComponents && isSubComponentOf(property1, property2);
}

function isDirectComponentOf(property1, property2) {
  var descriptor = compactable[property1.name];

  return 'components' in descriptor && descriptor.components.indexOf(property2.name) > -1;
}

function isSubComponentOf(property1, property2) {
  return property1
    .components
    .some(function (component) {
      return isDirectComponentOf(component, property2);
    });
}

module.exports = isComponentOf;

},{"../compactable":21}],34:[function(require,module,exports){
var Marker = require('../../../tokenizer/marker');

function isMergeableShorthand(shorthand) {
  if (shorthand.name != 'font') {
    return true;
  }

  return shorthand.value[0][1].indexOf(Marker.INTERNAL) == -1;
}

module.exports = isMergeableShorthand;

},{"../../../tokenizer/marker":83}],35:[function(require,module,exports){
var everyValuesPair = require('./every-values-pair');
var hasInherit = require('./has-inherit');
var populateComponents = require('./populate-components');

var compactable = require('../compactable');
var deepClone = require('../clone').deep;
var restoreWithComponents = require('../restore-with-components');

var restoreFromOptimizing = require('../../restore-from-optimizing');
var wrapSingle = require('../../wrap-for-optimizing').single;

var serializeBody = require('../../../writer/one-time').body;
var Token = require('../../../tokenizer/token');

function mergeIntoShorthands(properties, validator) {
  var candidates = {};
  var descriptor;
  var componentOf;
  var property;
  var i, l;
  var j, m;

  // there is no shorthand property made up of less than 3 longhands
  if (properties.length < 3) {
    return;
  }

  for (i = 0, l = properties.length; i < l; i++) {
    property = properties[i];
    descriptor = compactable[property.name];

    if (property.unused) {
      continue;
    }

    if (property.hack) {
      continue;
    }

    if (property.block) {
      continue;
    }

    invalidateOrCompact(properties, i, candidates, validator);

    if (descriptor && descriptor.componentOf) {
      for (j = 0, m = descriptor.componentOf.length; j < m; j++) {
        componentOf = descriptor.componentOf[j];

        candidates[componentOf] = candidates[componentOf] || {};
        candidates[componentOf][property.name] = property;
      }
    }
  }

  invalidateOrCompact(properties, i, candidates, validator);
}

function invalidateOrCompact(properties, position, candidates, validator) {
  var invalidatedBy = properties[position];
  var shorthandName;
  var shorthandDescriptor;
  var candidateComponents;

  for (shorthandName in candidates) {
    if (undefined !== invalidatedBy && shorthandName == invalidatedBy.name) {
      continue;
    }

    shorthandDescriptor = compactable[shorthandName];
    candidateComponents = candidates[shorthandName];
    if (invalidatedBy && invalidates(candidates, shorthandName, invalidatedBy)) {
      delete candidates[shorthandName];
      continue;
    }

    if (shorthandDescriptor.components.length > Object.keys(candidateComponents).length) {
      continue;
    }

    if (mixedImportance(candidateComponents)) {
      continue;
    }

    if (!overridable(candidateComponents, shorthandName, validator)) {
      continue;
    }

    if (!mergeable(candidateComponents)) {
      continue;
    }

    if (mixedInherit(candidateComponents)) {
      replaceWithInheritBestFit(properties, candidateComponents, shorthandName, validator);
    } else {
      replaceWithShorthand(properties, candidateComponents, shorthandName, validator);
    }
  }
}

function invalidates(candidates, shorthandName, invalidatedBy) {
  var shorthandDescriptor = compactable[shorthandName];
  var invalidatedByDescriptor = compactable[invalidatedBy.name];
  var componentName;

  if ('overridesShorthands' in shorthandDescriptor && shorthandDescriptor.overridesShorthands.indexOf(invalidatedBy.name) > -1) {
    return true;
  }

  if (invalidatedByDescriptor && 'componentOf' in invalidatedByDescriptor) {
    for (componentName in candidates[shorthandName]) {
      if (invalidatedByDescriptor.componentOf.indexOf(componentName) > -1) {
        return true;
      }
    }
  }

  return false;
}

function mixedImportance(components) {
  var important;
  var componentName;

  for (componentName in components) {
    if (undefined !== important && components[componentName].important != important) {
      return true;
    }

    important = components[componentName].important;
  }

  return false;
}

function overridable(components, shorthandName, validator) {
  var descriptor = compactable[shorthandName];
  var newValuePlaceholder = [
    Token.PROPERTY,
    [Token.PROPERTY_NAME, shorthandName],
    [Token.PROPERTY_VALUE, descriptor.defaultValue]
  ];
  var newProperty = wrapSingle(newValuePlaceholder);
  var component;
  var mayOverride;
  var i, l;

  populateComponents([newProperty], validator, []);

  for (i = 0, l = descriptor.components.length; i < l; i++) {
    component = components[descriptor.components[i]];
    mayOverride = compactable[component.name].canOverride;

    if (!everyValuesPair(mayOverride.bind(null, validator), newProperty.components[i], component)) {
      return false;
    }
  }

  return true;
}

function mergeable(components) {
  var lastCount = null;
  var currentCount;
  var componentName;
  var component;
  var descriptor;
  var values;

  for (componentName in components) {
    component = components[componentName];
    descriptor = compactable[componentName];

    if (!('restore' in descriptor)) {
      continue;
    }

    restoreFromOptimizing([component.all[component.position]], restoreWithComponents);
    values = descriptor.restore(component, compactable);

    currentCount = values.length;

    if (lastCount !== null && currentCount !== lastCount) {
      return false;
    }

    lastCount = currentCount;
  }

  return true;
}

function mixedInherit(components) {
  var componentName;
  var lastValue = null;
  var currentValue;

  for (componentName in components) {
    currentValue = hasInherit(components[componentName]);

    if (lastValue !== null && lastValue !== currentValue) {
      return true;
    }

    lastValue = currentValue;
  }

  return false;
}

function replaceWithInheritBestFit(properties, candidateComponents, shorthandName, validator) {
  var viaLonghands = buildSequenceWithInheritLonghands(candidateComponents, shorthandName, validator);
  var viaShorthand = buildSequenceWithInheritShorthand(candidateComponents, shorthandName, validator);
  var longhandTokensSequence = viaLonghands[0];
  var shorthandTokensSequence = viaShorthand[0];
  var isLonghandsShorter = serializeBody(longhandTokensSequence).length < serializeBody(shorthandTokensSequence).length;
  var newTokensSequence = isLonghandsShorter ? longhandTokensSequence : shorthandTokensSequence;
  var newProperty = isLonghandsShorter ? viaLonghands[1] : viaShorthand[1];
  var newComponents = isLonghandsShorter ? viaLonghands[2] : viaShorthand[2];
  var all = candidateComponents[Object.keys(candidateComponents)[0]].all;
  var componentName;
  var oldComponent;
  var newComponent;
  var newToken;

  newProperty.position = all.length;
  newProperty.shorthand = true;
  newProperty.dirty = true;
  newProperty.all = all;
  newProperty.all.push(newTokensSequence[0]);

  properties.push(newProperty);

  for (componentName in candidateComponents) {
    oldComponent = candidateComponents[componentName];
    oldComponent.unused = true;

    if (oldComponent.name in newComponents) {
      newComponent = newComponents[oldComponent.name];
      newToken = findTokenIn(newTokensSequence, componentName);

      newComponent.position = all.length;
      newComponent.all = all;
      newComponent.all.push(newToken);

      properties.push(newComponent);
    }
  }
}

function buildSequenceWithInheritLonghands(components, shorthandName, validator) {
  var tokensSequence = [];
  var inheritComponents = {};
  var nonInheritComponents = {};
  var descriptor = compactable[shorthandName];
  var shorthandToken = [
    Token.PROPERTY,
    [Token.PROPERTY_NAME, shorthandName],
    [Token.PROPERTY_VALUE, descriptor.defaultValue]
  ];
  var newProperty = wrapSingle(shorthandToken);
  var component;
  var longhandToken;
  var newComponent;
  var nameMetadata;
  var i, l;

  populateComponents([newProperty], validator, []);

  for (i = 0, l = descriptor.components.length; i < l; i++) {
    component = components[descriptor.components[i]];

    if (hasInherit(component)) {
      longhandToken = component.all[component.position].slice(0, 2);
      Array.prototype.push.apply(longhandToken, component.value);
      tokensSequence.push(longhandToken);

      newComponent = deepClone(component);
      newComponent.value = inferComponentValue(components, newComponent.name);

      newProperty.components[i] = newComponent;
      inheritComponents[component.name] = deepClone(component);
    } else {
      newComponent = deepClone(component);
      newComponent.all = component.all;
      newProperty.components[i] = newComponent;

      nonInheritComponents[component.name] = component;
    }
  }

  nameMetadata = joinMetadata(nonInheritComponents, 1);
  shorthandToken[1].push(nameMetadata);

  restoreFromOptimizing([newProperty], restoreWithComponents);

  shorthandToken = shorthandToken.slice(0, 2);
  Array.prototype.push.apply(shorthandToken, newProperty.value);

  tokensSequence.unshift(shorthandToken);

  return [tokensSequence, newProperty, inheritComponents];
}

function inferComponentValue(components, propertyName) {
  var descriptor = compactable[propertyName];

  if ('oppositeTo' in descriptor) {
    return components[descriptor.oppositeTo].value;
  } else {
    return [[Token.PROPERTY_VALUE, descriptor.defaultValue]];
  }
}

function joinMetadata(components, at) {
  var metadata = [];
  var component;
  var originalValue;
  var componentMetadata;
  var componentName;

  for (componentName in components) {
    component = components[componentName];
    originalValue = component.all[component.position];
    componentMetadata = originalValue[at][originalValue[at].length - 1];

    Array.prototype.push.apply(metadata, componentMetadata);
  }

  return metadata.sort(metadataSorter);
}

function metadataSorter(metadata1, metadata2) {
  var line1 = metadata1[0];
  var line2 = metadata2[0];
  var column1 = metadata1[1];
  var column2 = metadata2[1];

  if (line1 < line2) {
    return -1;
  } else if (line1 === line2) {
    return column1 < column2 ? -1 : 1;
  } else {
    return 1;
  }
}

function buildSequenceWithInheritShorthand(components, shorthandName, validator) {
  var tokensSequence = [];
  var inheritComponents = {};
  var nonInheritComponents = {};
  var descriptor = compactable[shorthandName];
  var shorthandToken = [
    Token.PROPERTY,
    [Token.PROPERTY_NAME, shorthandName],
    [Token.PROPERTY_VALUE, 'inherit']
  ];
  var newProperty = wrapSingle(shorthandToken);
  var component;
  var longhandToken;
  var nameMetadata;
  var valueMetadata;
  var i, l;

  populateComponents([newProperty], validator, []);

  for (i = 0, l = descriptor.components.length; i < l; i++) {
    component = components[descriptor.components[i]];

    if (hasInherit(component)) {
      inheritComponents[component.name] = component;
    } else {
      longhandToken = component.all[component.position].slice(0, 2);
      Array.prototype.push.apply(longhandToken, component.value);
      tokensSequence.push(longhandToken);

      nonInheritComponents[component.name] = deepClone(component);
    }
  }

  nameMetadata = joinMetadata(inheritComponents, 1);
  shorthandToken[1].push(nameMetadata);

  valueMetadata = joinMetadata(inheritComponents, 2);
  shorthandToken[2].push(valueMetadata);

  tokensSequence.unshift(shorthandToken);

  return [tokensSequence, newProperty, nonInheritComponents];
}

function findTokenIn(tokens, componentName) {
  var i, l;

  for (i = 0, l = tokens.length; i < l; i++) {
    if (tokens[i][1][1] == componentName) {
      return tokens[i];
    }
  }
}

function replaceWithShorthand(properties, candidateComponents, shorthandName, validator) {
  var descriptor = compactable[shorthandName];
  var nameMetadata;
  var valueMetadata;
  var newValuePlaceholder = [
    Token.PROPERTY,
    [Token.PROPERTY_NAME, shorthandName],
    [Token.PROPERTY_VALUE, descriptor.defaultValue]
  ];
  var all;

  var newProperty = wrapSingle(newValuePlaceholder);
  newProperty.shorthand = true;
  newProperty.dirty = true;

  populateComponents([newProperty], validator, []);

  for (var i = 0, l = descriptor.components.length; i < l; i++) {
    var component = candidateComponents[descriptor.components[i]];

    newProperty.components[i] = deepClone(component);
    newProperty.important = component.important;

    all = component.all;
  }

  for (var componentName in candidateComponents) {
    candidateComponents[componentName].unused = true;
  }

  nameMetadata = joinMetadata(candidateComponents, 1);
  newValuePlaceholder[1].push(nameMetadata);

  valueMetadata = joinMetadata(candidateComponents, 2);
  newValuePlaceholder[2].push(valueMetadata);

  newProperty.position = all.length;
  newProperty.all = all;
  newProperty.all.push(newValuePlaceholder);

  properties.push(newProperty);
}

module.exports = mergeIntoShorthands;

},{"../../../tokenizer/token":84,"../../../writer/one-time":98,"../../restore-from-optimizing":56,"../../wrap-for-optimizing":58,"../clone":20,"../compactable":21,"../restore-with-components":48,"./every-values-pair":30,"./has-inherit":32,"./populate-components":39}],36:[function(require,module,exports){
var mergeIntoShorthands = require('./merge-into-shorthands');
var overrideProperties = require('./override-properties');
var populateComponents = require('./populate-components');

var restoreWithComponents = require('../restore-with-components');

var wrapForOptimizing = require('../../wrap-for-optimizing').all;
var removeUnused = require('../../remove-unused');
var restoreFromOptimizing = require('../../restore-from-optimizing');

var OptimizationLevel = require('../../../options/optimization-level').OptimizationLevel;

function optimizeProperties(properties, withOverriding, withMerging, context) {
  var levelOptions = context.options.level[OptimizationLevel.Two];
  var _properties = wrapForOptimizing(properties, false, levelOptions.skipProperties);
  var _property;
  var i, l;

  populateComponents(_properties, context.validator, context.warnings);

  for (i = 0, l = _properties.length; i < l; i++) {
    _property = _properties[i];
    if (_property.block) {
      optimizeProperties(_property.value[0][1], withOverriding, withMerging, context);
    }
  }

  if (withMerging && levelOptions.mergeIntoShorthands) {
    mergeIntoShorthands(_properties, context.validator);
  }

  if (withOverriding && levelOptions.overrideProperties) {
    overrideProperties(_properties, withMerging, context.options.compatibility, context.validator);
  }

  restoreFromOptimizing(_properties, restoreWithComponents);
  removeUnused(_properties);
}

module.exports = optimizeProperties;

},{"../../../options/optimization-level":65,"../../remove-unused":55,"../../restore-from-optimizing":56,"../../wrap-for-optimizing":58,"../restore-with-components":48,"./merge-into-shorthands":35,"./override-properties":37,"./populate-components":39}],37:[function(require,module,exports){
var hasInherit = require('./has-inherit');
var everyValuesPair = require('./every-values-pair');
var findComponentIn = require('./find-component-in');
var isComponentOf = require('./is-component-of');
var isMergeableShorthand = require('./is-mergeable-shorthand');
var overridesNonComponentShorthand = require('./overrides-non-component-shorthand');
var sameVendorPrefixesIn = require('./vendor-prefixes').same;

var compactable = require('../compactable');
var deepClone = require('../clone').deep;
var restoreWithComponents = require('../restore-with-components');
var shallowClone = require('../clone').shallow;

var restoreFromOptimizing = require('../../restore-from-optimizing');

var Token = require('../../../tokenizer/token');
var Marker = require('../../../tokenizer/marker');

var serializeProperty = require('../../../writer/one-time').property;

function wouldBreakCompatibility(property, validator) {
  for (var i = 0; i < property.components.length; i++) {
    var component = property.components[i];
    var descriptor = compactable[component.name];
    var canOverride = descriptor && descriptor.canOverride || canOverride.sameValue;

    var _component = shallowClone(component);
    _component.value = [[Token.PROPERTY_VALUE, descriptor.defaultValue]];

    if (!everyValuesPair(canOverride.bind(null, validator), _component, component)) {
      return true;
    }
  }

  return false;
}

function overrideIntoMultiplex(property, by) {
  by.unused = true;

  turnIntoMultiplex(by, multiplexSize(property));
  property.value = by.value;
}

function overrideByMultiplex(property, by) {
  by.unused = true;
  property.multiplex = true;
  property.value = by.value;
}

function overrideSimple(property, by) {
  by.unused = true;
  property.value = by.value;
}

function override(property, by) {
  if (by.multiplex)
    overrideByMultiplex(property, by);
  else if (property.multiplex)
    overrideIntoMultiplex(property, by);
  else
    overrideSimple(property, by);
}

function overrideShorthand(property, by) {
  by.unused = true;

  for (var i = 0, l = property.components.length; i < l; i++) {
    override(property.components[i], by.components[i], property.multiplex);
  }
}

function turnIntoMultiplex(property, size) {
  property.multiplex = true;

  if (compactable[property.name].shorthand) {
    turnShorthandValueIntoMultiplex(property, size);
  } else {
    turnLonghandValueIntoMultiplex(property, size);
  }
}

function turnShorthandValueIntoMultiplex(property, size) {
  var component;
  var i, l;

  for (i = 0, l = property.components.length; i < l; i++) {
    component = property.components[i];

    if (!component.multiplex) {
      turnLonghandValueIntoMultiplex(component, size);
    }
  }
}

function turnLonghandValueIntoMultiplex(property, size) {
  var descriptor = compactable[property.name];
  var withRealValue = descriptor.intoMultiplexMode == 'real';
  var withValue = descriptor.intoMultiplexMode == 'real' ?
    property.value.slice(0) :
    (descriptor.intoMultiplexMode == 'placeholder' ? descriptor.placeholderValue : descriptor.defaultValue);
  var i = multiplexSize(property);
  var j;
  var m = withValue.length;

  for (; i < size; i++) {
    property.value.push([Token.PROPERTY_VALUE, Marker.COMMA]);

    if (Array.isArray(withValue)) {
      for (j = 0; j < m; j++) {
        property.value.push(withRealValue ? withValue[j] : [Token.PROPERTY_VALUE, withValue[j]]);
      }
    } else {
      property.value.push(withRealValue ? withValue : [Token.PROPERTY_VALUE, withValue]);
    }
  }
}

function multiplexSize(component) {
  var size = 0;

  for (var i = 0, l = component.value.length; i < l; i++) {
    if (component.value[i][1] == Marker.COMMA)
      size++;
  }

  return size + 1;
}

function lengthOf(property) {
  var fakeAsArray = [
    Token.PROPERTY,
    [Token.PROPERTY_NAME, property.name]
  ].concat(property.value);
  return serializeProperty([fakeAsArray], 0).length;
}

function moreSameShorthands(properties, startAt, name) {
  // Since we run the main loop in `compactOverrides` backwards, at this point some
  // properties may not be marked as unused.
  // We should consider reverting the order if possible
  var count = 0;

  for (var i = startAt; i >= 0; i--) {
    if (properties[i].name == name && !properties[i].unused)
      count++;
    if (count > 1)
      break;
  }

  return count > 1;
}

function overridingFunction(shorthand, validator) {
  for (var i = 0, l = shorthand.components.length; i < l; i++) {
    if (!anyValue(validator.isUrl, shorthand.components[i]) && anyValue(validator.isFunction, shorthand.components[i])) {
      return true;
    }
  }

  return false;
}

function anyValue(fn, property) {
  for (var i = 0, l = property.value.length; i < l; i++) {
    if (property.value[i][1] == Marker.COMMA)
      continue;

    if (fn(property.value[i][1]))
      return true;
  }

  return false;
}

function wouldResultInLongerValue(left, right) {
  if (!left.multiplex && !right.multiplex || left.multiplex && right.multiplex)
    return false;

  var multiplex = left.multiplex ? left : right;
  var simple = left.multiplex ? right : left;
  var component;

  var multiplexClone = deepClone(multiplex);
  restoreFromOptimizing([multiplexClone], restoreWithComponents);

  var simpleClone = deepClone(simple);
  restoreFromOptimizing([simpleClone], restoreWithComponents);

  var lengthBefore = lengthOf(multiplexClone) + 1 + lengthOf(simpleClone);

  if (left.multiplex) {
    component = findComponentIn(multiplexClone, simpleClone);
    overrideIntoMultiplex(component, simpleClone);
  } else {
    component = findComponentIn(simpleClone, multiplexClone);
    turnIntoMultiplex(simpleClone, multiplexSize(multiplexClone));
    overrideByMultiplex(component, multiplexClone);
  }

  restoreFromOptimizing([simpleClone], restoreWithComponents);

  var lengthAfter = lengthOf(simpleClone);

  return lengthBefore <= lengthAfter;
}

function isCompactable(property) {
  return property.name in compactable;
}

function noneOverrideHack(left, right) {
  return !left.multiplex &&
    (left.name == 'background' || left.name == 'background-image') &&
    right.multiplex &&
    (right.name == 'background' || right.name == 'background-image') &&
    anyLayerIsNone(right.value);
}

function anyLayerIsNone(values) {
  var layers = intoLayers(values);

  for (var i = 0, l = layers.length; i < l; i++) {
    if (layers[i].length == 1 && layers[i][0][1] == 'none')
      return true;
  }

  return false;
}

function intoLayers(values) {
  var layers = [];

  for (var i = 0, layer = [], l = values.length; i < l; i++) {
    var value = values[i];
    if (value[1] == Marker.COMMA) {
      layers.push(layer);
      layer = [];
    } else {
      layer.push(value);
    }
  }

  layers.push(layer);
  return layers;
}

function overrideProperties(properties, withMerging, compatibility, validator) {
  var mayOverride, right, left, component;
  var overriddenComponents;
  var overriddenComponent;
  var overridingComponent;
  var overridable;
  var i, j, k;

  propertyLoop:
  for (i = properties.length - 1; i >= 0; i--) {
    right = properties[i];

    if (!isCompactable(right))
      continue;

    if (right.block)
      continue;

    mayOverride = compactable[right.name].canOverride;

    traverseLoop:
    for (j = i - 1; j >= 0; j--) {
      left = properties[j];

      if (!isCompactable(left))
        continue;

      if (left.block)
        continue;

      if (left.unused || right.unused)
        continue;

      if (left.hack && !right.hack && !right.important || !left.hack && !left.important && right.hack)
        continue;

      if (left.important == right.important && left.hack[0] != right.hack[0])
        continue;

      if (left.important == right.important && (left.hack[0] != right.hack[0] || (left.hack[1] && left.hack[1] != right.hack[1])))
        continue;

      if (hasInherit(right))
        continue;

      if (noneOverrideHack(left, right))
        continue;

      if (right.shorthand && isComponentOf(right, left)) {
        // maybe `left` can be overridden by `right` which is a shorthand?
        if (!right.important && left.important)
          continue;

        if (!sameVendorPrefixesIn([left], right.components))
          continue;

        if (!anyValue(validator.isFunction, left) && overridingFunction(right, validator))
          continue;

        if (!isMergeableShorthand(right)) {
          left.unused = true;
          continue;
        }

        component = findComponentIn(right, left);
        mayOverride = compactable[left.name].canOverride;
        if (everyValuesPair(mayOverride.bind(null, validator), left, component)) {
          left.unused = true;
        }
      } else if (right.shorthand && overridesNonComponentShorthand(right, left)) {
        // `right` is a shorthand while `left` can be overriden by it, think `border` and `border-top`
        if (!right.important && left.important) {
          continue;
        }

        if (!sameVendorPrefixesIn([left], right.components)) {
          continue;
        }

        if (!anyValue(validator.isFunction, left) && overridingFunction(right, validator)) {
          continue;
        }

        overriddenComponents = left.shorthand ?
          left.components:
          [left];

        for (k = overriddenComponents.length - 1; k >= 0; k--) {
          overriddenComponent = overriddenComponents[k];
          overridingComponent = findComponentIn(right, overriddenComponent);
          mayOverride = compactable[overriddenComponent.name].canOverride;

          if (!everyValuesPair(mayOverride.bind(null, validator), left, overridingComponent)) {
            continue traverseLoop;
          }
        }

        left.unused = true;
      } else if (withMerging && left.shorthand && !right.shorthand && isComponentOf(left, right, true)) {
        // maybe `right` can be pulled into `left` which is a shorthand?
        if (right.important && !left.important)
          continue;

        if (!right.important && left.important) {
          right.unused = true;
          continue;
        }

        // Pending more clever algorithm in #527
        if (moreSameShorthands(properties, i - 1, left.name))
          continue;

        if (overridingFunction(left, validator))
          continue;

        if (!isMergeableShorthand(left))
          continue;

        component = findComponentIn(left, right);
        if (everyValuesPair(mayOverride.bind(null, validator), component, right)) {
          var disabledBackgroundMerging =
            !compatibility.properties.backgroundClipMerging && component.name.indexOf('background-clip') > -1 ||
            !compatibility.properties.backgroundOriginMerging && component.name.indexOf('background-origin') > -1 ||
            !compatibility.properties.backgroundSizeMerging && component.name.indexOf('background-size') > -1;
          var nonMergeableValue = compactable[right.name].nonMergeableValue === right.value[0][1];

          if (disabledBackgroundMerging || nonMergeableValue)
            continue;

          if (!compatibility.properties.merging && wouldBreakCompatibility(left, validator))
            continue;

          if (component.value[0][1] != right.value[0][1] && (hasInherit(left) || hasInherit(right)))
            continue;

          if (wouldResultInLongerValue(left, right))
            continue;

          if (!left.multiplex && right.multiplex)
            turnIntoMultiplex(left, multiplexSize(right));

          override(component, right);
          left.dirty = true;
        }
      } else if (withMerging && left.shorthand && right.shorthand && left.name == right.name) {
        // merge if all components can be merged

        if (!left.multiplex && right.multiplex)
          continue;

        if (!right.important && left.important) {
          right.unused = true;
          continue propertyLoop;
        }

        if (right.important && !left.important) {
          left.unused = true;
          continue;
        }

        if (!isMergeableShorthand(right)) {
          left.unused = true;
          continue;
        }

        for (k = left.components.length - 1; k >= 0; k--) {
          var leftComponent = left.components[k];
          var rightComponent = right.components[k];

          mayOverride = compactable[leftComponent.name].canOverride;
          if (!everyValuesPair(mayOverride.bind(null, validator), leftComponent, rightComponent))
            continue propertyLoop;
        }

        overrideShorthand(left, right);
        left.dirty = true;
      } else if (withMerging && left.shorthand && right.shorthand && isComponentOf(left, right)) {
        // border is a shorthand but any of its components is a shorthand too

        if (!left.important && right.important)
          continue;

        component = findComponentIn(left, right);
        mayOverride = compactable[right.name].canOverride;
        if (!everyValuesPair(mayOverride.bind(null, validator), component, right))
          continue;

        if (left.important && !right.important) {
          right.unused = true;
          continue;
        }

        var rightRestored = compactable[right.name].restore(right, compactable);
        if (rightRestored.length > 1)
          continue;

        component = findComponentIn(left, right);
        override(component, right);
        right.dirty = true;
      } else if (left.name == right.name) {
        // two non-shorthands should be merged based on understandability
        overridable = true;

        if (right.shorthand) {
          for (k = right.components.length - 1; k >= 0 && overridable; k--) {
            overriddenComponent = left.components[k];
            overridingComponent = right.components[k];
            mayOverride = compactable[overridingComponent.name].canOverride;

            overridable = overridable && everyValuesPair(mayOverride.bind(null, validator), overriddenComponent, overridingComponent);
          }
        } else {
          mayOverride = compactable[right.name].canOverride;
          overridable = everyValuesPair(mayOverride.bind(null, validator), left, right);
        }

        if (left.important && !right.important && overridable) {
          right.unused = true;
          continue;
        }

        if (!left.important && right.important && overridable) {
          left.unused = true;
          continue;
        }

        if (!overridable) {
          continue;
        }

        left.unused = true;
      }
    }
  }
}

module.exports = overrideProperties;

},{"../../../tokenizer/marker":83,"../../../tokenizer/token":84,"../../../writer/one-time":98,"../../restore-from-optimizing":56,"../clone":20,"../compactable":21,"../restore-with-components":48,"./every-values-pair":30,"./find-component-in":31,"./has-inherit":32,"./is-component-of":33,"./is-mergeable-shorthand":34,"./overrides-non-component-shorthand":38,"./vendor-prefixes":41}],38:[function(require,module,exports){
var compactable = require('../compactable');

function overridesNonComponentShorthand(property1, property2) {
  return property1.name in compactable &&
    'overridesShorthands' in compactable[property1.name] &&
    compactable[property1.name].overridesShorthands.indexOf(property2.name) > -1;
}

module.exports = overridesNonComponentShorthand;

},{"../compactable":21}],39:[function(require,module,exports){
var compactable = require('../compactable');
var InvalidPropertyError = require('../invalid-property-error');

function populateComponents(properties, validator, warnings) {
  var component;
  var j, m;

  for (var i = properties.length - 1; i >= 0; i--) {
    var property = properties[i];
    var descriptor = compactable[property.name];

    if (descriptor && descriptor.shorthand) {
      property.shorthand = true;
      property.dirty = true;

      try {
        property.components = descriptor.breakUp(property, compactable, validator);

        if (descriptor.shorthandComponents) {
          for (j = 0, m = property.components.length; j < m; j++) {
            component = property.components[j];
            component.components = compactable[component.name].breakUp(component, compactable, validator);
          }
        }
      } catch (e) {
        if (e instanceof InvalidPropertyError) {
          property.components = []; // this will set property.unused to true below
          warnings.push(e.message);
        } else {
          throw e;
        }
      }

      if (property.components.length > 0)
        property.multiplex = property.components[0].multiplex;
      else
        property.unused = true;
    }
  }
}

module.exports = populateComponents;

},{"../compactable":21,"../invalid-property-error":23}],40:[function(require,module,exports){
var sameVendorPrefixes = require('./vendor-prefixes').same;

function understandable(validator, value1, value2, _position, isPaired) {
  if (!sameVendorPrefixes(value1, value2)) {
    return false;
  }

  if (isPaired && validator.isVariable(value1) !== validator.isVariable(value2)) {
    return false;
  }

  return true;
}

module.exports = understandable;

},{"./vendor-prefixes":41}],41:[function(require,module,exports){
var VENDOR_PREFIX_PATTERN = /(?:^|\W)(\-\w+\-)/g;

function unique(value) {
  var prefixes = [];
  var match;

  while ((match = VENDOR_PREFIX_PATTERN.exec(value)) !== null) {
    if (prefixes.indexOf(match[0]) == -1) {
      prefixes.push(match[0]);
    }
  }

  return prefixes;
}

function same(value1, value2) {
  return unique(value1).sort().join(',') == unique(value2).sort().join(',');
}

module.exports = {
  unique: unique,
  same: same
};

},{}],42:[function(require,module,exports){
var isMergeable = require('./is-mergeable');

var optimizeProperties = require('./properties/optimize');

var cloneArray = require('../../utils/clone-array');

var Token = require('../../tokenizer/token');

var serializeBody = require('../../writer/one-time').body;
var serializeRules = require('../../writer/one-time').rules;

function reduceNonAdjacent(tokens, context) {
  var options = context.options;
  var mergeablePseudoClasses = options.compatibility.selectors.mergeablePseudoClasses;
  var mergeablePseudoElements = options.compatibility.selectors.mergeablePseudoElements;
  var multiplePseudoMerging = options.compatibility.selectors.multiplePseudoMerging;
  var candidates = {};
  var repeated = [];

  for (var i = tokens.length - 1; i >= 0; i--) {
    var token = tokens[i];

    if (token[0] != Token.RULE) {
      continue;
    } else if (token[2].length === 0) {
      continue;
    }

    var selectorAsString = serializeRules(token[1]);
    var isComplexAndNotSpecial = token[1].length > 1 &&
      isMergeable(selectorAsString, mergeablePseudoClasses, mergeablePseudoElements, multiplePseudoMerging);
    var wrappedSelectors = wrappedSelectorsFrom(token[1]);
    var selectors = isComplexAndNotSpecial ?
      [selectorAsString].concat(wrappedSelectors) :
      [selectorAsString];

    for (var j = 0, m = selectors.length; j < m; j++) {
      var selector = selectors[j];

      if (!candidates[selector])
        candidates[selector] = [];
      else
        repeated.push(selector);

      candidates[selector].push({
        where: i,
        list: wrappedSelectors,
        isPartial: isComplexAndNotSpecial && j > 0,
        isComplex: isComplexAndNotSpecial && j === 0
      });
    }
  }

  reduceSimpleNonAdjacentCases(tokens, repeated, candidates, options, context);
  reduceComplexNonAdjacentCases(tokens, candidates, options, context);
}

function wrappedSelectorsFrom(list) {
  var wrapped = [];

  for (var i = 0; i < list.length; i++) {
    wrapped.push([list[i][1]]);
  }

  return wrapped;
}

function reduceSimpleNonAdjacentCases(tokens, repeated, candidates, options, context) {
  function filterOut(idx, bodies) {
    return data[idx].isPartial && bodies.length === 0;
  }

  function reduceBody(token, newBody, processedCount, tokenIdx) {
    if (!data[processedCount - tokenIdx - 1].isPartial)
      token[2] = newBody;
  }

  for (var i = 0, l = repeated.length; i < l; i++) {
    var selector = repeated[i];
    var data = candidates[selector];

    reduceSelector(tokens, data, {
      filterOut: filterOut,
      callback: reduceBody
    }, options, context);
  }
}

function reduceComplexNonAdjacentCases(tokens, candidates, options, context) {
  var mergeablePseudoClasses = options.compatibility.selectors.mergeablePseudoClasses;
  var mergeablePseudoElements = options.compatibility.selectors.mergeablePseudoElements;
  var multiplePseudoMerging = options.compatibility.selectors.multiplePseudoMerging;
  var localContext = {};

  function filterOut(idx) {
    return localContext.data[idx].where < localContext.intoPosition;
  }

  function collectReducedBodies(token, newBody, processedCount, tokenIdx) {
    if (tokenIdx === 0)
      localContext.reducedBodies.push(newBody);
  }

  allSelectors:
  for (var complexSelector in candidates) {
    var into = candidates[complexSelector];
    if (!into[0].isComplex)
      continue;

    var intoPosition = into[into.length - 1].where;
    var intoToken = tokens[intoPosition];
    var reducedBodies = [];

    var selectors = isMergeable(complexSelector, mergeablePseudoClasses, mergeablePseudoElements, multiplePseudoMerging) ?
      into[0].list :
      [complexSelector];

    localContext.intoPosition = intoPosition;
    localContext.reducedBodies = reducedBodies;

    for (var j = 0, m = selectors.length; j < m; j++) {
      var selector = selectors[j];
      var data = candidates[selector];

      if (data.length < 2)
        continue allSelectors;

      localContext.data = data;

      reduceSelector(tokens, data, {
        filterOut: filterOut,
        callback: collectReducedBodies
      }, options, context);

      if (serializeBody(reducedBodies[reducedBodies.length - 1]) != serializeBody(reducedBodies[0]))
        continue allSelectors;
    }

    intoToken[2] = reducedBodies[0];
  }
}

function reduceSelector(tokens, data, context, options, outerContext) {
  var bodies = [];
  var bodiesAsList = [];
  var processedTokens = [];

  for (var j = data.length - 1; j >= 0; j--) {
    if (context.filterOut(j, bodies))
      continue;

    var where = data[j].where;
    var token = tokens[where];
    var clonedBody = cloneArray(token[2]);

    bodies = bodies.concat(clonedBody);
    bodiesAsList.push(clonedBody);
    processedTokens.push(where);
  }

  optimizeProperties(bodies, true, false, outerContext);

  var processedCount = processedTokens.length;
  var propertyIdx = bodies.length - 1;
  var tokenIdx = processedCount - 1;

  while (tokenIdx >= 0) {
     if ((tokenIdx === 0 || (bodies[propertyIdx] && bodiesAsList[tokenIdx].indexOf(bodies[propertyIdx]) > -1)) && propertyIdx > -1) {
      propertyIdx--;
      continue;
    }

    var newBody = bodies.splice(propertyIdx + 1);
    context.callback(tokens[processedTokens[tokenIdx]], newBody, processedCount, tokenIdx);

    tokenIdx--;
  }
}

module.exports = reduceNonAdjacent;

},{"../../tokenizer/token":84,"../../utils/clone-array":86,"../../writer/one-time":98,"./is-mergeable":24,"./properties/optimize":36}],43:[function(require,module,exports){
var Token = require('../../tokenizer/token');

var serializeAll = require('../../writer/one-time').all;

var FONT_FACE_SCOPE = '@font-face';

function removeDuplicateFontAtRules(tokens) {
  var fontAtRules = [];
  var token;
  var key;
  var i, l;

  for (i = 0, l = tokens.length; i < l; i++) {
    token = tokens[i];

    if (token[0] != Token.AT_RULE_BLOCK && token[1][0][1] != FONT_FACE_SCOPE) {
      continue;
    }

    key = serializeAll([token]);

    if (fontAtRules.indexOf(key) > -1) {
      token[2] = [];
    } else {
      fontAtRules.push(key);
    }
  }
}

module.exports = removeDuplicateFontAtRules;

},{"../../tokenizer/token":84,"../../writer/one-time":98}],44:[function(require,module,exports){
var Token = require('../../tokenizer/token');

var serializeAll = require('../../writer/one-time').all;
var serializeRules = require('../../writer/one-time').rules;

function removeDuplicateMediaQueries(tokens) {
  var candidates = {};
  var candidate;
  var token;
  var key;
  var i, l;

  for (i = 0, l = tokens.length; i < l; i++) {
    token = tokens[i];
    if (token[0] != Token.NESTED_BLOCK) {
      continue;
    }

    key = serializeRules(token[1]) + '%' + serializeAll(token[2]);
    candidate = candidates[key];

    if (candidate) {
      candidate[2] = [];
    }

    candidates[key] = token;
  }
}

module.exports = removeDuplicateMediaQueries;

},{"../../tokenizer/token":84,"../../writer/one-time":98}],45:[function(require,module,exports){
var Token = require('../../tokenizer/token');

var serializeBody = require('../../writer/one-time').body;
var serializeRules = require('../../writer/one-time').rules;

function removeDuplicates(tokens) {
  var matched = {};
  var moreThanOnce = [];
  var id, token;
  var body, bodies;

  for (var i = 0, l = tokens.length; i < l; i++) {
    token = tokens[i];
    if (token[0] != Token.RULE)
      continue;

    id = serializeRules(token[1]);

    if (matched[id] && matched[id].length == 1)
      moreThanOnce.push(id);
    else
      matched[id] = matched[id] || [];

    matched[id].push(i);
  }

  for (i = 0, l = moreThanOnce.length; i < l; i++) {
    id = moreThanOnce[i];
    bodies = [];

    for (var j = matched[id].length - 1; j >= 0; j--) {
      token = tokens[matched[id][j]];
      body = serializeBody(token[2]);

      if (bodies.indexOf(body) > -1)
        token[2] = [];
      else
        bodies.push(body);
    }
  }
}

module.exports = removeDuplicates;

},{"../../tokenizer/token":84,"../../writer/one-time":98}],46:[function(require,module,exports){
var populateComponents = require('./properties/populate-components');

var wrapForOptimizing = require('../wrap-for-optimizing').single;
var restoreFromOptimizing = require('../restore-from-optimizing');

var Token = require('../../tokenizer/token');

var animationNameRegex = /^(\-moz\-|\-o\-|\-webkit\-)?animation-name$/;
var animationRegex = /^(\-moz\-|\-o\-|\-webkit\-)?animation$/;
var keyframeRegex = /^@(\-moz\-|\-o\-|\-webkit\-)?keyframes /;
var importantRegex = /\s{0,31}!important$/;
var optionalMatchingQuotesRegex = /^(['"]?)(.*)\1$/;

function normalize(value) {
  return value
    .replace(optionalMatchingQuotesRegex, '$2')
    .replace(importantRegex, '');
}

function removeUnusedAtRules(tokens, context) {
  removeUnusedAtRule(tokens, matchCounterStyle, markCounterStylesAsUsed, context);
  removeUnusedAtRule(tokens, matchFontFace, markFontFacesAsUsed, context);
  removeUnusedAtRule(tokens, matchKeyframe, markKeyframesAsUsed, context);
  removeUnusedAtRule(tokens, matchNamespace, markNamespacesAsUsed, context);
}

function removeUnusedAtRule(tokens, matchCallback, markCallback, context) {
  var atRules = {};
  var atRule;
  var atRuleTokens;
  var atRuleToken;
  var zeroAt;
  var i, l;

  for (i = 0, l = tokens.length; i < l; i++) {
    matchCallback(tokens[i], atRules);
  }

  if (Object.keys(atRules).length === 0) {
    return;
  }

  markUsedAtRules(tokens, markCallback, atRules, context);

  for (atRule in atRules) {
    atRuleTokens = atRules[atRule];

    for (i = 0, l = atRuleTokens.length; i < l; i++) {
      atRuleToken = atRuleTokens[i];
      zeroAt = atRuleToken[0] == Token.AT_RULE ? 1 : 2;
      atRuleToken[zeroAt] = [];
    }
  }
}

function markUsedAtRules(tokens, markCallback, atRules, context) {
  var boundMarkCallback = markCallback(atRules);
  var i, l;

  for (i = 0, l = tokens.length; i < l; i++) {
    switch (tokens[i][0]) {
      case Token.RULE:
        boundMarkCallback(tokens[i], context);
        break;
      case Token.NESTED_BLOCK:
        markUsedAtRules(tokens[i][2], markCallback, atRules, context);
    }
  }
}

function matchCounterStyle(token, atRules) {
  var match;

  if (token[0] == Token.AT_RULE_BLOCK && token[1][0][1].indexOf('@counter-style') === 0) {
    match = token[1][0][1].split(' ')[1];
    atRules[match] = atRules[match] || [];
    atRules[match].push(token);
  }
}

function markCounterStylesAsUsed(atRules) {
  return function (token, context) {
    var property;
    var wrappedProperty;
    var i, l;

    for (i = 0, l = token[2].length; i < l; i++) {
      property = token[2][i];

      if (property[1][1] == 'list-style') {
        wrappedProperty = wrapForOptimizing(property);
        populateComponents([wrappedProperty], context.validator, context.warnings);

        if (wrappedProperty.components[0].value[0][1] in atRules) {
          delete atRules[property[2][1]];
        }

        restoreFromOptimizing([wrappedProperty]);
      }

      if (property[1][1] == 'list-style-type' && property[2][1] in atRules) {
        delete atRules[property[2][1]];
      }
    }
  };
}

function matchFontFace(token, atRules) {
  var property;
  var match;
  var i, l;

  if (token[0] == Token.AT_RULE_BLOCK && token[1][0][1] == '@font-face') {
    for (i = 0, l = token[2].length; i < l; i++) {
      property = token[2][i];

      if (property[1][1] == 'font-family') {
        match = normalize(property[2][1].toLowerCase());
        atRules[match] = atRules[match] || [];
        atRules[match].push(token);
        break;
      }
    }
  }
}

function markFontFacesAsUsed(atRules) {
  return function (token, context) {
    var property;
    var wrappedProperty;
    var component;
    var normalizedMatch;
    var i, l;
    var j, m;

    for (i = 0, l = token[2].length; i < l; i++) {
      property = token[2][i];

      if (property[1][1] == 'font') {
        wrappedProperty = wrapForOptimizing(property);
        populateComponents([wrappedProperty], context.validator, context.warnings);
        component = wrappedProperty.components[6];

        for (j = 0, m = component.value.length; j < m; j++) {
          normalizedMatch = normalize(component.value[j][1].toLowerCase());

          if (normalizedMatch in atRules) {
            delete atRules[normalizedMatch];
          }
        }

        restoreFromOptimizing([wrappedProperty]);
      }

      if (property[1][1] == 'font-family') {
        for (j = 2, m = property.length; j < m; j++) {
          normalizedMatch = normalize(property[j][1].toLowerCase());

          if (normalizedMatch in atRules) {
            delete atRules[normalizedMatch];
          }
        }
      }
    }
  };
}

function matchKeyframe(token, atRules) {
  var match;

  if (token[0] == Token.NESTED_BLOCK && keyframeRegex.test(token[1][0][1])) {
    match = token[1][0][1].split(' ')[1];
    atRules[match] = atRules[match] || [];
    atRules[match].push(token);
  }
}

function markKeyframesAsUsed(atRules) {
  return function (token, context) {
    var property;
    var wrappedProperty;
    var component;
    var i, l;
    var j, m;

    for (i = 0, l = token[2].length; i < l; i++) {
      property = token[2][i];

      if (animationRegex.test(property[1][1])) {
        wrappedProperty = wrapForOptimizing(property);
        populateComponents([wrappedProperty], context.validator, context.warnings);
        component = wrappedProperty.components[7];

        for (j = 0, m = component.value.length; j < m; j++) {
          if (component.value[j][1] in atRules) {
            delete atRules[component.value[j][1]];
          }
        }

        restoreFromOptimizing([wrappedProperty]);
      }

      if (animationNameRegex.test(property[1][1])) {
        for (j = 2, m = property.length; j < m; j++) {
          if (property[j][1] in atRules) {
            delete atRules[property[j][1]];
          }
        }
      }
    }
  };
}

function matchNamespace(token, atRules) {
  var match;

  if (token[0] == Token.AT_RULE && token[1].indexOf('@namespace') === 0) {
    match = token[1].split(' ')[1];
    atRules[match] = atRules[match] || [];
    atRules[match].push(token);
  }
}

function markNamespacesAsUsed(atRules) {
  var namespaceRegex = new RegExp(Object.keys(atRules).join('\\\||') + '\\\|', 'g');

  return function (token) {
    var match;
    var scope;
    var normalizedMatch;
    var i, l;
    var j, m;

    for (i = 0, l = token[1].length; i < l; i++) {
      scope = token[1][i];
      match = scope[1].match(namespaceRegex);

      for (j = 0, m = match.length; j < m; j++) {
        normalizedMatch = match[j].substring(0, match[j].length - 1);

        if (normalizedMatch in atRules) {
          delete atRules[normalizedMatch];
        }
      }
    }
  };
}

module.exports = removeUnusedAtRules;

},{"../../tokenizer/token":84,"../restore-from-optimizing":56,"../wrap-for-optimizing":58,"./properties/populate-components":39}],47:[function(require,module,exports){
// TODO: it'd be great to merge it with the other canReorder functionality

var rulesOverlap = require('./rules-overlap');
var specificitiesOverlap = require('./specificities-overlap');

var FLEX_PROPERTIES = /align\-items|box\-align|box\-pack|flex|justify/;
var BORDER_PROPERTIES = /^border\-(top|right|bottom|left|color|style|width|radius)/;

function canReorder(left, right, cache) {
  for (var i = right.length - 1; i >= 0; i--) {
    for (var j = left.length - 1; j >= 0; j--) {
      if (!canReorderSingle(left[j], right[i], cache))
        return false;
    }
  }

  return true;
}

function canReorderSingle(left, right, cache) {
  var leftName = left[0];
  var leftValue = left[1];
  var leftNameRoot = left[2];
  var leftSelector = left[5];
  var leftInSpecificSelector = left[6];
  var rightName = right[0];
  var rightValue = right[1];
  var rightNameRoot = right[2];
  var rightSelector = right[5];
  var rightInSpecificSelector = right[6];

  if (leftName == 'font' && rightName == 'line-height' || rightName == 'font' && leftName == 'line-height')
    return false;
  if (FLEX_PROPERTIES.test(leftName) && FLEX_PROPERTIES.test(rightName))
    return false;
  if (leftNameRoot == rightNameRoot && unprefixed(leftName) == unprefixed(rightName) && (vendorPrefixed(leftName) ^ vendorPrefixed(rightName)))
    return false;
  if (leftNameRoot == 'border' && BORDER_PROPERTIES.test(rightNameRoot) && (leftName == 'border' || leftName == rightNameRoot || (leftValue != rightValue && sameBorderComponent(leftName, rightName))))
    return false;
  if (rightNameRoot == 'border' && BORDER_PROPERTIES.test(leftNameRoot) && (rightName == 'border' || rightName == leftNameRoot || (leftValue != rightValue && sameBorderComponent(leftName, rightName))))
    return false;
  if (leftNameRoot == 'border' && rightNameRoot == 'border' && leftName != rightName && (isSideBorder(leftName) && isStyleBorder(rightName) || isStyleBorder(leftName) && isSideBorder(rightName)))
    return false;
  if (leftNameRoot != rightNameRoot)
    return true;
  if (leftName == rightName && leftNameRoot == rightNameRoot && (leftValue == rightValue || withDifferentVendorPrefix(leftValue, rightValue)))
    return true;
  if (leftName != rightName && leftNameRoot == rightNameRoot && leftName != leftNameRoot && rightName != rightNameRoot)
    return true;
  if (leftName != rightName && leftNameRoot == rightNameRoot && leftValue == rightValue)
    return true;
  if (rightInSpecificSelector && leftInSpecificSelector && !inheritable(leftNameRoot) && !inheritable(rightNameRoot) && !rulesOverlap(rightSelector, leftSelector, false))
    return true;
  if (!specificitiesOverlap(leftSelector, rightSelector, cache))
    return true;

  return false;
}

function vendorPrefixed(name) {
  return /^\-(?:moz|webkit|ms|o)\-/.test(name);
}

function unprefixed(name) {
  return name.replace(/^\-(?:moz|webkit|ms|o)\-/, '');
}

function sameBorderComponent(name1, name2) {
  return name1.split('-').pop() == name2.split('-').pop();
}

function isSideBorder(name) {
  return name == 'border-top' || name == 'border-right' || name == 'border-bottom' || name == 'border-left';
}

function isStyleBorder(name) {
  return name == 'border-color' || name == 'border-style' || name == 'border-width';
}

function withDifferentVendorPrefix(value1, value2) {
  return vendorPrefixed(value1) && vendorPrefixed(value2) && value1.split('-')[1] != value2.split('-')[2];
}

function inheritable(name) {
  // According to http://www.w3.org/TR/CSS21/propidx.html
  // Others will be catched by other, preceeding rules
  return name == 'font' || name == 'line-height' || name == 'list-style';
}

module.exports = {
  canReorder: canReorder,
  canReorderSingle: canReorderSingle
};

},{"./rules-overlap":51,"./specificities-overlap":52}],48:[function(require,module,exports){
var compactable = require('./compactable');

function restoreWithComponents(property) {
  var descriptor = compactable[property.name];

  if (descriptor && descriptor.shorthand) {
    return descriptor.restore(property, compactable);
  } else {
    return property.value;
  }
}

module.exports = restoreWithComponents;

},{"./compactable":21}],49:[function(require,module,exports){
var shallowClone = require('./clone').shallow;

var Token = require('../../tokenizer/token');
var Marker = require('../../tokenizer/marker');

function isInheritOnly(values) {
  for (var i = 0, l = values.length; i < l; i++) {
    var value = values[i][1];

    if (value != 'inherit' && value != Marker.COMMA && value != Marker.FORWARD_SLASH)
      return false;
  }

  return true;
}

function background(property, compactable, lastInMultiplex) {
  var components = property.components;
  var restored = [];
  var needsOne, needsBoth;

  function restoreValue(component) {
    Array.prototype.unshift.apply(restored, component.value);
  }

  function isDefaultValue(component) {
    var descriptor = compactable[component.name];

    if (descriptor.doubleValues && descriptor.defaultValue.length == 1) {
      return component.value[0][1] == descriptor.defaultValue[0] && (component.value[1] ? component.value[1][1] == descriptor.defaultValue[0] : true);
    } else if (descriptor.doubleValues && descriptor.defaultValue.length != 1) {
      return component.value[0][1] == descriptor.defaultValue[0] && (component.value[1] ? component.value[1][1] : component.value[0][1]) == descriptor.defaultValue[1];
    } else {
      return component.value[0][1] == descriptor.defaultValue;
    }
  }

  for (var i = components.length - 1; i >= 0; i--) {
    var component = components[i];
    var isDefault = isDefaultValue(component);

    if (component.name == 'background-clip') {
      var originComponent = components[i - 1];
      var isOriginDefault = isDefaultValue(originComponent);

      needsOne = component.value[0][1] == originComponent.value[0][1];

      needsBoth = !needsOne && (
        (isOriginDefault && !isDefault) ||
        (!isOriginDefault && !isDefault) ||
        (!isOriginDefault && isDefault && component.value[0][1] != originComponent.value[0][1]));

      if (needsOne) {
        restoreValue(originComponent);
      } else if (needsBoth) {
        restoreValue(component);
        restoreValue(originComponent);
      }

      i--;
    } else if (component.name == 'background-size') {
      var positionComponent = components[i - 1];
      var isPositionDefault = isDefaultValue(positionComponent);

      needsOne = !isPositionDefault && isDefault;

      needsBoth = !needsOne &&
        (isPositionDefault && !isDefault || !isPositionDefault && !isDefault);

      if (needsOne) {
        restoreValue(positionComponent);
      } else if (needsBoth) {
        restoreValue(component);
        restored.unshift([Token.PROPERTY_VALUE, Marker.FORWARD_SLASH]);
        restoreValue(positionComponent);
      } else if (positionComponent.value.length == 1) {
        restoreValue(positionComponent);
      }

      i--;
    } else {
      if (isDefault || compactable[component.name].multiplexLastOnly && !lastInMultiplex)
        continue;

      restoreValue(component);
    }
  }

  if (restored.length === 0 && property.value.length == 1 && property.value[0][1] == '0')
    restored.push(property.value[0]);

  if (restored.length === 0)
    restored.push([Token.PROPERTY_VALUE, compactable[property.name].defaultValue]);

  if (isInheritOnly(restored))
    return [restored[0]];

  return restored;
}

function borderRadius(property, compactable) {
  if (property.multiplex) {
    var horizontal = shallowClone(property);
    var vertical = shallowClone(property);

    for (var i = 0; i < 4; i++) {
      var component = property.components[i];

      var horizontalComponent = shallowClone(property);
      horizontalComponent.value = [component.value[0]];
      horizontal.components.push(horizontalComponent);

      var verticalComponent = shallowClone(property);
      // FIXME: only shorthand compactor (see breakup#borderRadius) knows that border radius
      // longhands have two values, whereas tokenizer does not care about populating 2nd value
      // if it's missing, hence this fallback
      verticalComponent.value = [component.value[1] || component.value[0]];
      vertical.components.push(verticalComponent);
    }

    var horizontalValues = fourValues(horizontal, compactable);
    var verticalValues = fourValues(vertical, compactable);

    if (horizontalValues.length == verticalValues.length &&
        horizontalValues[0][1] == verticalValues[0][1] &&
        (horizontalValues.length > 1 ? horizontalValues[1][1] == verticalValues[1][1] : true) &&
        (horizontalValues.length > 2 ? horizontalValues[2][1] == verticalValues[2][1] : true) &&
        (horizontalValues.length > 3 ? horizontalValues[3][1] == verticalValues[3][1] : true)) {
      return horizontalValues;
    } else {
      return horizontalValues.concat([[Token.PROPERTY_VALUE, Marker.FORWARD_SLASH]]).concat(verticalValues);
    }
  } else {
    return fourValues(property, compactable);
  }
}

function font(property, compactable) {
  var components = property.components;
  var restored = [];
  var component;
  var componentIndex = 0;
  var fontFamilyIndex = 0;

  if (property.value[0][1].indexOf(Marker.INTERNAL) === 0) {
    property.value[0][1] = property.value[0][1].substring(Marker.INTERNAL.length);
    return property.value;
  }

  // first four components are optional
  while (componentIndex < 4) {
    component = components[componentIndex];

    if (component.value[0][1] != compactable[component.name].defaultValue) {
      Array.prototype.push.apply(restored, component.value);
    }

    componentIndex++;
  }

  // then comes font-size
  Array.prototype.push.apply(restored, components[componentIndex].value);
  componentIndex++;

  // then may come line-height
  if (components[componentIndex].value[0][1] != compactable[components[componentIndex].name].defaultValue) {
    Array.prototype.push.apply(restored, [[Token.PROPERTY_VALUE, Marker.FORWARD_SLASH]]);
    Array.prototype.push.apply(restored, components[componentIndex].value);
  }

  componentIndex++;

  // then comes font-family
  while (components[componentIndex].value[fontFamilyIndex]) {
    restored.push(components[componentIndex].value[fontFamilyIndex]);

    if (components[componentIndex].value[fontFamilyIndex + 1]) {
      restored.push([Token.PROPERTY_VALUE, Marker.COMMA]);
    }

    fontFamilyIndex++;
  }

  if (isInheritOnly(restored)) {
    return [restored[0]];
  }

  return restored;
}

function fourValues(property) {
  var components = property.components;
  var value1 = components[0].value[0];
  var value2 = components[1].value[0];
  var value3 = components[2].value[0];
  var value4 = components[3].value[0];

  if (value1[1] == value2[1] && value1[1] == value3[1] && value1[1] == value4[1]) {
    return [value1];
  } else if (value1[1] == value3[1] && value2[1] == value4[1]) {
    return [value1, value2];
  } else if (value2[1] == value4[1]) {
    return [value1, value2, value3];
  } else {
    return [value1, value2, value3, value4];
  }
}

function multiplex(restoreWith) {
  return function (property, compactable) {
    if (!property.multiplex)
      return restoreWith(property, compactable, true);

    var multiplexSize = 0;
    var restored = [];
    var componentMultiplexSoFar = {};
    var i, l;

    // At this point we don't know what's the multiplex size, e.g. how many background layers are there
    for (i = 0, l = property.components[0].value.length; i < l; i++) {
      if (property.components[0].value[i][1] == Marker.COMMA)
        multiplexSize++;
    }

    for (i = 0; i <= multiplexSize; i++) {
      var _property = shallowClone(property);

      // We split multiplex into parts and restore them one by one
      for (var j = 0, m = property.components.length; j < m; j++) {
        var componentToClone = property.components[j];
        var _component = shallowClone(componentToClone);
        _property.components.push(_component);

        // The trick is some properties has more than one value, so we iterate over values looking for
        // a multiplex separator - a comma
        for (var k = componentMultiplexSoFar[_component.name] || 0, n = componentToClone.value.length; k < n; k++) {
          if (componentToClone.value[k][1] == Marker.COMMA) {
            componentMultiplexSoFar[_component.name] = k + 1;
            break;
          }

          _component.value.push(componentToClone.value[k]);
        }
      }

      // No we can restore shorthand value
      var lastInMultiplex = i == multiplexSize;
      var _restored = restoreWith(_property, compactable, lastInMultiplex);
      Array.prototype.push.apply(restored, _restored);

      if (i < multiplexSize)
        restored.push([Token.PROPERTY_VALUE, Marker.COMMA]);
    }

    return restored;
  };
}

function withoutDefaults(property, compactable) {
  var components = property.components;
  var restored = [];

  for (var i = components.length - 1; i >= 0; i--) {
    var component = components[i];
    var descriptor = compactable[component.name];

    if (component.value[0][1] != descriptor.defaultValue || ('keepUnlessDefault' in descriptor) && !isDefault(components, compactable, descriptor.keepUnlessDefault)) {
      restored.unshift(component.value[0]);
    }
  }

  if (restored.length === 0)
    restored.push([Token.PROPERTY_VALUE, compactable[property.name].defaultValue]);

  if (isInheritOnly(restored))
    return [restored[0]];

  return restored;
}

function isDefault(components, compactable, propertyName) {
  var component;
  var i, l;

  for (i = 0, l = components.length; i < l; i++) {
    component = components[i];

    if (component.name == propertyName && component.value[0][1] == compactable[propertyName].defaultValue) {
      return true;
    }
  }

  return false;
}

module.exports = {
  background: background,
  borderRadius: borderRadius,
  font: font,
  fourValues: fourValues,
  multiplex: multiplex,
  withoutDefaults: withoutDefaults
};

},{"../../tokenizer/marker":83,"../../tokenizer/token":84,"./clone":20}],50:[function(require,module,exports){
var canReorderSingle = require('./reorderable').canReorderSingle;
var extractProperties = require('./extract-properties');
var isMergeable = require('./is-mergeable');
var tidyRuleDuplicates = require('./tidy-rule-duplicates');

var Token = require('../../tokenizer/token');

var cloneArray = require('../../utils/clone-array');

var serializeBody = require('../../writer/one-time').body;
var serializeRules = require('../../writer/one-time').rules;

function naturalSorter(a, b) {
  return a > b ? 1 : -1;
}

function cloneAndMergeSelectors(propertyA, propertyB) {
  var cloned = cloneArray(propertyA);
  cloned[5] = cloned[5].concat(propertyB[5]);

  return cloned;
}

function restructure(tokens, context) {
  var options = context.options;
  var mergeablePseudoClasses = options.compatibility.selectors.mergeablePseudoClasses;
  var mergeablePseudoElements = options.compatibility.selectors.mergeablePseudoElements;
  var mergeLimit = options.compatibility.selectors.mergeLimit;
  var multiplePseudoMerging = options.compatibility.selectors.multiplePseudoMerging;
  var specificityCache = context.cache.specificity;
  var movableTokens = {};
  var movedProperties = [];
  var multiPropertyMoveCache = {};
  var movedToBeDropped = [];
  var maxCombinationsLevel = 2;
  var ID_JOIN_CHARACTER = '%';

  function sendToMultiPropertyMoveCache(position, movedProperty, allFits) {
    for (var i = allFits.length - 1; i >= 0; i--) {
      var fit = allFits[i][0];
      var id = addToCache(movedProperty, fit);

      if (multiPropertyMoveCache[id].length > 1 && processMultiPropertyMove(position, multiPropertyMoveCache[id])) {
        removeAllMatchingFromCache(id);
        break;
      }
    }
  }

  function addToCache(movedProperty, fit) {
    var id = cacheId(fit);
    multiPropertyMoveCache[id] = multiPropertyMoveCache[id] || [];
    multiPropertyMoveCache[id].push([movedProperty, fit]);
    return id;
  }

  function removeAllMatchingFromCache(matchId) {
    var matchSelectors = matchId.split(ID_JOIN_CHARACTER);
    var forRemoval = [];
    var i;

    for (var id in multiPropertyMoveCache) {
      var selectors = id.split(ID_JOIN_CHARACTER);
      for (i = selectors.length - 1; i >= 0; i--) {
        if (matchSelectors.indexOf(selectors[i]) > -1) {
          forRemoval.push(id);
          break;
        }
      }
    }

    for (i = forRemoval.length - 1; i >= 0; i--) {
      delete multiPropertyMoveCache[forRemoval[i]];
    }
  }

  function cacheId(cachedTokens) {
    var id = [];
    for (var i = 0, l = cachedTokens.length; i < l; i++) {
      id.push(serializeRules(cachedTokens[i][1]));
    }
    return id.join(ID_JOIN_CHARACTER);
  }

  function tokensToMerge(sourceTokens) {
    var uniqueTokensWithBody = [];
    var mergeableTokens = [];

    for (var i = sourceTokens.length - 1; i >= 0; i--) {
      if (!isMergeable(serializeRules(sourceTokens[i][1]), mergeablePseudoClasses, mergeablePseudoElements, multiplePseudoMerging)) {
        continue;
      }

      mergeableTokens.unshift(sourceTokens[i]);
      if (sourceTokens[i][2].length > 0 && uniqueTokensWithBody.indexOf(sourceTokens[i]) == -1)
        uniqueTokensWithBody.push(sourceTokens[i]);
    }

    return uniqueTokensWithBody.length > 1 ?
      mergeableTokens :
      [];
  }

  function shortenIfPossible(position, movedProperty) {
    var name = movedProperty[0];
    var value = movedProperty[1];
    var key = movedProperty[4];
    var valueSize = name.length + value.length + 1;
    var allSelectors = [];
    var qualifiedTokens = [];

    var mergeableTokens = tokensToMerge(movableTokens[key]);
    if (mergeableTokens.length < 2)
      return;

    var allFits = findAllFits(mergeableTokens, valueSize, 1);
    var bestFit = allFits[0];
    if (bestFit[1] > 0)
      return sendToMultiPropertyMoveCache(position, movedProperty, allFits);

    for (var i = bestFit[0].length - 1; i >=0; i--) {
      allSelectors = bestFit[0][i][1].concat(allSelectors);
      qualifiedTokens.unshift(bestFit[0][i]);
    }

    allSelectors = tidyRuleDuplicates(allSelectors);
    dropAsNewTokenAt(position, [movedProperty], allSelectors, qualifiedTokens);
  }

  function fitSorter(fit1, fit2) {
    return fit1[1] > fit2[1] ? 1 : (fit1[1] == fit2[1] ? 0 : -1);
  }

  function findAllFits(mergeableTokens, propertySize, propertiesCount) {
    var combinations = allCombinations(mergeableTokens, propertySize, propertiesCount, maxCombinationsLevel - 1);
    return combinations.sort(fitSorter);
  }

  function allCombinations(tokensVariant, propertySize, propertiesCount, level) {
    var differenceVariants = [[tokensVariant, sizeDifference(tokensVariant, propertySize, propertiesCount)]];
    if (tokensVariant.length > 2 && level > 0) {
      for (var i = tokensVariant.length - 1; i >= 0; i--) {
        var subVariant = Array.prototype.slice.call(tokensVariant, 0);
        subVariant.splice(i, 1);
        differenceVariants = differenceVariants.concat(allCombinations(subVariant, propertySize, propertiesCount, level - 1));
      }
    }

    return differenceVariants;
  }

  function sizeDifference(tokensVariant, propertySize, propertiesCount) {
    var allSelectorsSize = 0;
    for (var i = tokensVariant.length - 1; i >= 0; i--) {
      allSelectorsSize += tokensVariant[i][2].length > propertiesCount ? serializeRules(tokensVariant[i][1]).length : -1;
    }
    return allSelectorsSize - (tokensVariant.length - 1) * propertySize + 1;
  }

  function dropAsNewTokenAt(position, properties, allSelectors, mergeableTokens) {
    var i, j, k, m;
    var allProperties = [];

    for (i = mergeableTokens.length - 1; i >= 0; i--) {
      var mergeableToken = mergeableTokens[i];

      for (j = mergeableToken[2].length - 1; j >= 0; j--) {
        var mergeableProperty = mergeableToken[2][j];

        for (k = 0, m = properties.length; k < m; k++) {
          var property = properties[k];

          var mergeablePropertyName = mergeableProperty[1][1];
          var propertyName = property[0];
          var propertyBody = property[4];
          if (mergeablePropertyName == propertyName && serializeBody([mergeableProperty]) == propertyBody) {
            mergeableToken[2].splice(j, 1);
            break;
          }
        }
      }
    }

    for (i = properties.length - 1; i >= 0; i--) {
      allProperties.unshift(properties[i][3]);
    }

    var newToken = [Token.RULE, allSelectors, allProperties];
    tokens.splice(position, 0, newToken);
  }

  function dropPropertiesAt(position, movedProperty) {
    var key = movedProperty[4];
    var toMove = movableTokens[key];

    if (toMove && toMove.length > 1) {
      if (!shortenMultiMovesIfPossible(position, movedProperty))
        shortenIfPossible(position, movedProperty);
    }
  }

  function shortenMultiMovesIfPossible(position, movedProperty) {
    var candidates = [];
    var propertiesAndMergableTokens = [];
    var key = movedProperty[4];
    var j, k;

    var mergeableTokens = tokensToMerge(movableTokens[key]);
    if (mergeableTokens.length < 2)
      return;

    movableLoop:
    for (var value in movableTokens) {
      var tokensList = movableTokens[value];

      for (j = mergeableTokens.length - 1; j >= 0; j--) {
        if (tokensList.indexOf(mergeableTokens[j]) == -1)
          continue movableLoop;
      }

      candidates.push(value);
    }

    if (candidates.length < 2)
      return false;

    for (j = candidates.length - 1; j >= 0; j--) {
      for (k = movedProperties.length - 1; k >= 0; k--) {
        if (movedProperties[k][4] == candidates[j]) {
          propertiesAndMergableTokens.unshift([movedProperties[k], mergeableTokens]);
          break;
        }
      }
    }

    return processMultiPropertyMove(position, propertiesAndMergableTokens);
  }

  function processMultiPropertyMove(position, propertiesAndMergableTokens) {
    var valueSize = 0;
    var properties = [];
    var property;

    for (var i = propertiesAndMergableTokens.length - 1; i >= 0; i--) {
      property = propertiesAndMergableTokens[i][0];
      var fullValue = property[4];
      valueSize += fullValue.length + (i > 0 ? 1 : 0);

      properties.push(property);
    }

    var mergeableTokens = propertiesAndMergableTokens[0][1];
    var bestFit = findAllFits(mergeableTokens, valueSize, properties.length)[0];
    if (bestFit[1] > 0)
      return false;

    var allSelectors = [];
    var qualifiedTokens = [];
    for (i = bestFit[0].length - 1; i >= 0; i--) {
      allSelectors = bestFit[0][i][1].concat(allSelectors);
      qualifiedTokens.unshift(bestFit[0][i]);
    }

    allSelectors = tidyRuleDuplicates(allSelectors);
    dropAsNewTokenAt(position, properties, allSelectors, qualifiedTokens);

    for (i = properties.length - 1; i >= 0; i--) {
      property = properties[i];
      var index = movedProperties.indexOf(property);

      delete movableTokens[property[4]];

      if (index > -1 && movedToBeDropped.indexOf(index) == -1)
        movedToBeDropped.push(index);
    }

    return true;
  }

  function boundToAnotherPropertyInCurrrentToken(property, movedProperty, token) {
    var propertyName = property[0];
    var movedPropertyName = movedProperty[0];
    if (propertyName != movedPropertyName)
      return false;

    var key = movedProperty[4];
    var toMove = movableTokens[key];
    return toMove && toMove.indexOf(token) > -1;
  }

  for (var i = tokens.length - 1; i >= 0; i--) {
    var token = tokens[i];
    var isRule;
    var j, k, m;
    var samePropertyAt;

    if (token[0] == Token.RULE) {
      isRule = true;
    } else if (token[0] == Token.NESTED_BLOCK) {
      isRule = false;
    } else {
      continue;
    }

    // We cache movedProperties.length as it may change in the loop
    var movedCount = movedProperties.length;

    var properties = extractProperties(token);
    movedToBeDropped = [];

    var unmovableInCurrentToken = [];
    for (j = properties.length - 1; j >= 0; j--) {
      for (k = j - 1; k >= 0; k--) {
        if (!canReorderSingle(properties[j], properties[k], specificityCache)) {
          unmovableInCurrentToken.push(j);
          break;
        }
      }
    }

    for (j = properties.length - 1; j >= 0; j--) {
      var property = properties[j];
      var movedSameProperty = false;

      for (k = 0; k < movedCount; k++) {
        var movedProperty = movedProperties[k];

        if (movedToBeDropped.indexOf(k) == -1 && (!canReorderSingle(property, movedProperty, specificityCache) && !boundToAnotherPropertyInCurrrentToken(property, movedProperty, token) ||
            movableTokens[movedProperty[4]] && movableTokens[movedProperty[4]].length === mergeLimit)) {
          dropPropertiesAt(i + 1, movedProperty, token);

          if (movedToBeDropped.indexOf(k) == -1) {
            movedToBeDropped.push(k);
            delete movableTokens[movedProperty[4]];
          }
        }

        if (!movedSameProperty) {
          movedSameProperty = property[0] == movedProperty[0] && property[1] == movedProperty[1];

          if (movedSameProperty) {
            samePropertyAt = k;
          }
        }
      }

      if (!isRule || unmovableInCurrentToken.indexOf(j) > -1)
        continue;

      var key = property[4];

      if (movedSameProperty && movedProperties[samePropertyAt][5].length + property[5].length > mergeLimit) {
        dropPropertiesAt(i + 1, movedProperties[samePropertyAt]);
        movedProperties.splice(samePropertyAt, 1);
        movableTokens[key] = [token];
        movedSameProperty = false;
      } else {
        movableTokens[key] = movableTokens[key] || [];
        movableTokens[key].push(token);
      }

      if (movedSameProperty) {
        movedProperties[samePropertyAt] = cloneAndMergeSelectors(movedProperties[samePropertyAt], property);
      } else {
        movedProperties.push(property);
      }
    }

    movedToBeDropped = movedToBeDropped.sort(naturalSorter);
    for (j = 0, m = movedToBeDropped.length; j < m; j++) {
      var dropAt = movedToBeDropped[j] - j;
      movedProperties.splice(dropAt, 1);
    }
  }

  var position = tokens[0] && tokens[0][0] == Token.AT_RULE && tokens[0][1].indexOf('@charset') === 0 ? 1 : 0;
  for (; position < tokens.length - 1; position++) {
    var isImportRule = tokens[position][0] === Token.AT_RULE && tokens[position][1].indexOf('@import') === 0;
    var isComment = tokens[position][0] === Token.COMMENT;
    if (!(isImportRule || isComment))
      break;
  }

  for (i = 0; i < movedProperties.length; i++) {
    dropPropertiesAt(position, movedProperties[i]);
  }
}

module.exports = restructure;

},{"../../tokenizer/token":84,"../../utils/clone-array":86,"../../writer/one-time":98,"./extract-properties":22,"./is-mergeable":24,"./reorderable":47,"./tidy-rule-duplicates":54}],51:[function(require,module,exports){
var MODIFIER_PATTERN = /\-\-.+$/;

function rulesOverlap(rule1, rule2, bemMode) {
  var scope1;
  var scope2;
  var i, l;
  var j, m;

  for (i = 0, l = rule1.length; i < l; i++) {
    scope1 = rule1[i][1];

    for (j = 0, m = rule2.length; j < m; j++) {
      scope2 = rule2[j][1];

      if (scope1 == scope2) {
        return true;
      }

      if (bemMode && withoutModifiers(scope1) == withoutModifiers(scope2)) {
        return true;
      }
    }
  }

  return false;
}

function withoutModifiers(scope) {
  return scope.replace(MODIFIER_PATTERN, '');
}

module.exports = rulesOverlap;

},{}],52:[function(require,module,exports){
var specificity = require('./specificity');

function specificitiesOverlap(selector1, selector2, cache) {
  var specificity1;
  var specificity2;
  var i, l;
  var j, m;

  for (i = 0, l = selector1.length; i < l; i++) {
    specificity1 = findSpecificity(selector1[i][1], cache);

    for (j = 0, m = selector2.length; j < m; j++) {
      specificity2 = findSpecificity(selector2[j][1], cache);

      if (specificity1[0] === specificity2[0] && specificity1[1] === specificity2[1] && specificity1[2] === specificity2[2]) {
        return true;
      }
    }
  }

  return false;
}

function findSpecificity(selector, cache) {
  var value;

  if (!(selector in cache)) {
    cache[selector] = value = specificity(selector);
  }

  return value || cache[selector];
}

module.exports = specificitiesOverlap;

},{"./specificity":53}],53:[function(require,module,exports){
var Marker = require('../../tokenizer/marker');

var Selector = {
  ADJACENT_SIBLING: '+',
  DESCENDANT: '>',
  DOT: '.',
  HASH: '#',
  NON_ADJACENT_SIBLING: '~',
  PSEUDO: ':'
};

var LETTER_PATTERN = /[a-zA-Z]/;
var NOT_PREFIX = ':not(';
var SEPARATOR_PATTERN = /[\s,\(>~\+]/;

function specificity(selector) {
  var result = [0, 0, 0];
  var character;
  var isEscaped;
  var isSingleQuoted;
  var isDoubleQuoted;
  var roundBracketLevel = 0;
  var couldIntroduceNewTypeSelector;
  var withinNotPseudoClass = false;
  var wasPseudoClass = false;
  var i, l;

  for (i = 0, l = selector.length; i < l; i++) {
    character = selector[i];

    if (isEscaped) {
      // noop
    } else if (character == Marker.SINGLE_QUOTE && !isDoubleQuoted && !isSingleQuoted) {
      isSingleQuoted = true;
    } else if (character == Marker.SINGLE_QUOTE && !isDoubleQuoted && isSingleQuoted) {
      isSingleQuoted = false;
    } else if (character == Marker.DOUBLE_QUOTE && !isDoubleQuoted && !isSingleQuoted) {
      isDoubleQuoted = true;
    } else if (character == Marker.DOUBLE_QUOTE && isDoubleQuoted && !isSingleQuoted) {
      isDoubleQuoted = false;
    } else if (isSingleQuoted || isDoubleQuoted) {
      continue;
    } else if (roundBracketLevel > 0 && !withinNotPseudoClass) {
      // noop
    } else if (character == Marker.OPEN_ROUND_BRACKET) {
      roundBracketLevel++;
    } else if (character == Marker.CLOSE_ROUND_BRACKET && roundBracketLevel == 1) {
      roundBracketLevel--;
      withinNotPseudoClass = false;
    } else if (character == Marker.CLOSE_ROUND_BRACKET) {
      roundBracketLevel--;
    } else if (character == Selector.HASH) {
      result[0]++;
    } else if (character == Selector.DOT || character == Marker.OPEN_SQUARE_BRACKET) {
      result[1]++;
    } else if (character == Selector.PSEUDO && !wasPseudoClass && !isNotPseudoClass(selector, i)) {
      result[1]++;
      withinNotPseudoClass = false;
    } else if (character == Selector.PSEUDO) {
      withinNotPseudoClass = true;
    } else if ((i === 0 || couldIntroduceNewTypeSelector) && LETTER_PATTERN.test(character)) {
      result[2]++;
    }

    isEscaped = character == Marker.BACK_SLASH;
    wasPseudoClass = character == Selector.PSEUDO;
    couldIntroduceNewTypeSelector = !isEscaped && SEPARATOR_PATTERN.test(character);
  }

  return result;
}

function isNotPseudoClass(selector, index) {
  return selector.indexOf(NOT_PREFIX, index) === index;
}

module.exports = specificity;

},{"../../tokenizer/marker":83}],54:[function(require,module,exports){
function ruleSorter(s1, s2) {
  return s1[1] > s2[1] ? 1 : -1;
}

function tidyRuleDuplicates(rules) {
  var list = [];
  var repeated = [];

  for (var i = 0, l = rules.length; i < l; i++) {
    var rule = rules[i];

    if (repeated.indexOf(rule[1]) == -1) {
      repeated.push(rule[1]);
      list.push(rule);
    }
  }

  return list.sort(ruleSorter);
}

module.exports = tidyRuleDuplicates;

},{}],55:[function(require,module,exports){
function removeUnused(properties) {
  for (var i = properties.length - 1; i >= 0; i--) {
    var property = properties[i];

    if (property.unused) {
      property.all.splice(property.position, 1);
    }
  }
}

module.exports = removeUnused;

},{}],56:[function(require,module,exports){
var Hack = require('./hack');

var Marker = require('../tokenizer/marker');

var ASTERISK_HACK = '*';
var BACKSLASH_HACK = '\\';
var IMPORTANT_TOKEN = '!important';
var UNDERSCORE_HACK = '_';
var BANG_HACK = '!ie';

function restoreFromOptimizing(properties, restoreCallback) {
  var property;
  var restored;
  var current;
  var i;

  for (i = properties.length - 1; i >= 0; i--) {
    property = properties[i];

    if (property.unused) {
      continue;
    }

    if (!property.dirty && !property.important && !property.hack) {
      continue;
    }

    if (restoreCallback) {
      restored = restoreCallback(property);
      property.value = restored;
    } else {
      restored = property.value;
    }

    if (property.important) {
      restoreImportant(property);
    }

    if (property.hack) {
      restoreHack(property);
    }

    if ('all' in property) {
      current = property.all[property.position];
      current[1][1] = property.name;

      current.splice(2, current.length - 1);
      Array.prototype.push.apply(current, restored);
    }
  }
}

function restoreImportant(property) {
  property.value[property.value.length - 1][1] += IMPORTANT_TOKEN;
}

function restoreHack(property) {
  if (property.hack[0] == Hack.UNDERSCORE) {
    property.name = UNDERSCORE_HACK + property.name;
  } else if (property.hack[0] == Hack.ASTERISK) {
    property.name = ASTERISK_HACK + property.name;
  } else if (property.hack[0] == Hack.BACKSLASH) {
    property.value[property.value.length - 1][1] += BACKSLASH_HACK + property.hack[1];
  } else if (property.hack[0] == Hack.BANG) {
    property.value[property.value.length - 1][1] += Marker.SPACE + BANG_HACK;
  }
}

module.exports = restoreFromOptimizing;

},{"../tokenizer/marker":83,"./hack":8}],57:[function(require,module,exports){
var functionNoVendorRegexStr = '[A-Z]+(\\-|[A-Z]|[0-9])+\\(.*?\\)';
var functionVendorRegexStr = '\\-(\\-|[A-Z]|[0-9])+\\(.*?\\)';
var variableRegexStr = 'var\\(\\-\\-[^\\)]+\\)';
var functionAnyRegexStr = '(' + variableRegexStr + '|' + functionNoVendorRegexStr + '|' + functionVendorRegexStr + ')';

var calcRegex = new RegExp('^(\\-moz\\-|\\-webkit\\-)?calc\\([^\\)]+\\)$', 'i');
var decimalRegex = /[0-9]/;
var functionAnyRegex = new RegExp('^' + functionAnyRegexStr + '$', 'i');
var hslColorRegex = /^hsl\(\s{0,31}[\-\.]?\d+\s{0,31},\s{0,31}\.?\d+%\s{0,31},\s{0,31}\.?\d+%\s{0,31}\)|hsla\(\s{0,31}[\-\.]?\d+\s{0,31},\s{0,31}\.?\d+%\s{0,31},\s{0,31}\.?\d+%\s{0,31},\s{0,31}\.?\d+\s{0,31}\)$/;
var identifierRegex = /^(\-[a-z0-9_][a-z0-9\-_]*|[a-z][a-z0-9\-_]*)$/i;
var namedEntityRegex = /^[a-z]+$/i;
var prefixRegex = /^-([a-z0-9]|-)*$/i;
var rgbColorRegex = /^rgb\(\s{0,31}[\d]{1,3}\s{0,31},\s{0,31}[\d]{1,3}\s{0,31},\s{0,31}[\d]{1,3}\s{0,31}\)|rgba\(\s{0,31}[\d]{1,3}\s{0,31},\s{0,31}[\d]{1,3}\s{0,31},\s{0,31}[\d]{1,3}\s{0,31},\s{0,31}[\.\d]+\s{0,31}\)$/;
var timingFunctionRegex = /^(cubic\-bezier|steps)\([^\)]+\)$/;
var validTimeUnits = ['ms', 's'];
var urlRegex = /^url\([\s\S]+\)$/i;
var variableRegex = new RegExp('^' + variableRegexStr + '$', 'i');

var eightValueColorRegex = /^#[0-9a-f]{8}$/i;
var fourValueColorRegex = /^#[0-9a-f]{4}$/i;
var sixValueColorRegex = /^#[0-9a-f]{6}$/i;
var threeValueColorRegex = /^#[0-9a-f]{3}$/i;

var DECIMAL_DOT = '.';
var MINUS_SIGN = '-';
var PLUS_SIGN = '+';

var Keywords = {
  '^': [
    'inherit',
    'initial',
    'unset'
  ],
  '*-style': [
    'auto',
    'dashed',
    'dotted',
    'double',
    'groove',
    'hidden',
    'inset',
    'none',
    'outset',
    'ridge',
    'solid'
  ],
  '*-timing-function': [
    'ease',
    'ease-in',
    'ease-in-out',
    'ease-out',
    'linear',
    'step-end',
    'step-start'
  ],
  'animation-direction': [
    'alternate',
    'alternate-reverse',
    'normal',
    'reverse'
  ],
  'animation-fill-mode': [
    'backwards',
    'both',
    'forwards',
    'none'
  ],
  'animation-iteration-count': [
    'infinite'
  ],
  'animation-name': [
    'none'
  ],
  'animation-play-state': [
    'paused',
    'running'
  ],
  'background-attachment': [
    'fixed',
    'inherit',
    'local',
    'scroll'
  ],
  'background-clip': [
    'border-box',
    'content-box',
    'inherit',
    'padding-box',
    'text'
  ],
  'background-origin': [
    'border-box',
    'content-box',
    'inherit',
    'padding-box'
  ],
  'background-position': [
    'bottom',
    'center',
    'left',
    'right',
    'top'
  ],
  'background-repeat': [
    'no-repeat',
    'inherit',
    'repeat',
    'repeat-x',
    'repeat-y',
    'round',
    'space'
  ],
  'background-size': [
    'auto',
    'cover',
    'contain'
  ],
  'border-collapse': [
    'collapse',
    'inherit',
    'separate'
  ],
  'bottom': [
    'auto'
  ],
  'clear': [
    'both',
    'left',
    'none',
    'right'
  ],
  'color': [
    'transparent'
  ],
  'cursor': [
    'all-scroll',
    'auto',
    'col-resize',
    'crosshair',
    'default',
    'e-resize',
    'help',
    'move',
    'n-resize',
    'ne-resize',
    'no-drop',
    'not-allowed',
    'nw-resize',
    'pointer',
    'progress',
    'row-resize',
    's-resize',
    'se-resize',
    'sw-resize',
    'text',
    'vertical-text',
    'w-resize',
    'wait'
  ],
  'display': [
    'block',
    'inline',
    'inline-block',
    'inline-table',
    'list-item',
    'none',
    'table',
    'table-caption',
    'table-cell',
    'table-column',
    'table-column-group',
    'table-footer-group',
    'table-header-group',
    'table-row',
    'table-row-group'
  ],
  'float': [
    'left',
    'none',
    'right'
  ],
  'left': [
    'auto'
  ],
  'font': [
    'caption',
    'icon',
    'menu',
    'message-box',
    'small-caption',
    'status-bar',
    'unset'
  ],
  'font-size': [
    'large',
    'larger',
    'medium',
    'small',
    'smaller',
    'x-large',
    'x-small',
    'xx-large',
    'xx-small'
  ],
  'font-stretch': [
    'condensed',
    'expanded',
    'extra-condensed',
    'extra-expanded',
    'normal',
    'semi-condensed',
    'semi-expanded',
    'ultra-condensed',
    'ultra-expanded'
  ],
  'font-style': [
    'italic',
    'normal',
    'oblique'
  ],
  'font-variant': [
    'normal',
    'small-caps'
  ],
  'font-weight': [
    '100',
    '200',
    '300',
    '400',
    '500',
    '600',
    '700',
    '800',
    '900',
    'bold',
    'bolder',
    'lighter',
    'normal'
  ],
  'line-height': [
    'normal'
  ],
  'list-style-position': [
    'inside',
    'outside'
  ],
  'list-style-type': [
    'armenian',
    'circle',
    'decimal',
    'decimal-leading-zero',
    'disc',
    'decimal|disc', // this is the default value of list-style-type, see comment in compactable.js
    'georgian',
    'lower-alpha',
    'lower-greek',
    'lower-latin',
    'lower-roman',
    'none',
    'square',
    'upper-alpha',
    'upper-latin',
    'upper-roman'
  ],
  'overflow': [
    'auto',
    'hidden',
    'scroll',
    'visible'
  ],
  'position': [
    'absolute',
    'fixed',
    'relative',
    'static'
  ],
  'right': [
    'auto'
  ],
  'text-align': [
    'center',
    'justify',
    'left',
    'left|right', // this is the default value of list-style-type, see comment in compactable.js
    'right'
  ],
  'text-decoration': [
    'line-through',
    'none',
    'overline',
    'underline'
  ],
  'text-overflow': [
    'clip',
    'ellipsis'
  ],
  'top': [
    'auto'
  ],
  'vertical-align': [
    'baseline',
    'bottom',
    'middle',
    'sub',
    'super',
    'text-bottom',
    'text-top',
    'top'
  ],
  'visibility': [
    'collapse',
    'hidden',
    'visible'
  ],
  'white-space': [
    'normal',
    'nowrap',
    'pre'
  ],
  'width': [
    'inherit',
    'initial',
    'medium',
    'thick',
    'thin'
  ]
};

var Units = [
  '%',
  'ch',
  'cm',
  'em',
  'ex',
  'in',
  'mm',
  'pc',
  'pt',
  'px',
  'rem',
  'vh',
  'vm',
  'vmax',
  'vmin',
  'vw'
];

function isColor(value) {
  return value != 'auto' &&
    (
      isKeyword('color')(value) ||
      isHexColor(value) ||
      isColorFunction(value) ||
      isNamedEntity(value)
    );
}

function isColorFunction(value) {
  return isRgbColor(value) || isHslColor(value);
}

function isDynamicUnit(value) {
  return calcRegex.test(value);
}

function isFunction(value) {
  return functionAnyRegex.test(value);
}

function isHexColor(value) {
  return threeValueColorRegex.test(value) || fourValueColorRegex.test(value) || sixValueColorRegex.test(value) || eightValueColorRegex.test(value);
}

function isHslColor(value) {
  return hslColorRegex.test(value);
}

function isIdentifier(value) {
  return identifierRegex.test(value);
}

function isImage(value) {
  return value == 'none' || value == 'inherit' || isUrl(value);
}

function isKeyword(propertyName) {
  return function(value) {
    return Keywords[propertyName].indexOf(value) > -1;
  };
}

function isNamedEntity(value) {
  return namedEntityRegex.test(value);
}

function isNumber(value) {
  return scanForNumber(value) == value.length;
}

function isRgbColor(value) {
  return rgbColorRegex.test(value);
}

function isPrefixed(value) {
  return prefixRegex.test(value);
}

function isPositiveNumber(value) {
  return isNumber(value) &&
    parseFloat(value) >= 0;
}

function isVariable(value) {
  return variableRegex.test(value);
}

function isTime(value) {
  var numberUpTo = scanForNumber(value);

  return numberUpTo == value.length && parseInt(value) === 0 ||
    numberUpTo > -1 && validTimeUnits.indexOf(value.slice(numberUpTo + 1)) > -1;
}

function isTimingFunction() {
  var isTimingFunctionKeyword = isKeyword('*-timing-function');

  return function (value) {
    return isTimingFunctionKeyword(value) || timingFunctionRegex.test(value);
  };
}

function isUnit(validUnits, value) {
  var numberUpTo = scanForNumber(value);

  return numberUpTo == value.length && parseInt(value) === 0 ||
    numberUpTo > -1 && validUnits.indexOf(value.slice(numberUpTo + 1)) > -1 ||
    value == 'auto' ||
    value == 'inherit';
}

function isUrl(value) {
  return urlRegex.test(value);
}

function isZIndex(value) {
  return value == 'auto' ||
    isNumber(value) ||
    isKeyword('^')(value);
}

function scanForNumber(value) {
  var hasDot = false;
  var hasSign = false;
  var character;
  var i, l;

  for (i = 0, l = value.length; i < l; i++) {
    character = value[i];

    if (i === 0 && (character == PLUS_SIGN || character == MINUS_SIGN)) {
      hasSign = true;
    } else if (i > 0 && hasSign && (character == PLUS_SIGN || character == MINUS_SIGN)) {
      return i - 1;
    } else if (character == DECIMAL_DOT && !hasDot) {
      hasDot = true;
    } else if (character == DECIMAL_DOT && hasDot) {
      return i - 1;
    } else if (decimalRegex.test(character)) {
      continue;
    } else {
      return i - 1;
    }
  }

  return i;
}

function validator(compatibility) {
  var validUnits = Units.slice(0).filter(function (value) {
    return !(value in compatibility.units) || compatibility.units[value] === true;
  });

  return {
    colorOpacity: compatibility.colors.opacity,
    isAnimationDirectionKeyword: isKeyword('animation-direction'),
    isAnimationFillModeKeyword: isKeyword('animation-fill-mode'),
    isAnimationIterationCountKeyword: isKeyword('animation-iteration-count'),
    isAnimationNameKeyword: isKeyword('animation-name'),
    isAnimationPlayStateKeyword: isKeyword('animation-play-state'),
    isTimingFunction: isTimingFunction(),
    isBackgroundAttachmentKeyword: isKeyword('background-attachment'),
    isBackgroundClipKeyword: isKeyword('background-clip'),
    isBackgroundOriginKeyword: isKeyword('background-origin'),
    isBackgroundPositionKeyword: isKeyword('background-position'),
    isBackgroundRepeatKeyword: isKeyword('background-repeat'),
    isBackgroundSizeKeyword: isKeyword('background-size'),
    isColor: isColor,
    isColorFunction: isColorFunction,
    isDynamicUnit: isDynamicUnit,
    isFontKeyword: isKeyword('font'),
    isFontSizeKeyword: isKeyword('font-size'),
    isFontStretchKeyword: isKeyword('font-stretch'),
    isFontStyleKeyword: isKeyword('font-style'),
    isFontVariantKeyword: isKeyword('font-variant'),
    isFontWeightKeyword: isKeyword('font-weight'),
    isFunction: isFunction,
    isGlobal: isKeyword('^'),
    isHslColor: isHslColor,
    isIdentifier: isIdentifier,
    isImage: isImage,
    isKeyword: isKeyword,
    isLineHeightKeyword: isKeyword('line-height'),
    isListStylePositionKeyword: isKeyword('list-style-position'),
    isListStyleTypeKeyword: isKeyword('list-style-type'),
    isNumber: isNumber,
    isPrefixed: isPrefixed,
    isPositiveNumber: isPositiveNumber,
    isRgbColor: isRgbColor,
    isStyleKeyword: isKeyword('*-style'),
    isTime: isTime,
    isUnit: isUnit.bind(null, validUnits),
    isUrl: isUrl,
    isVariable: isVariable,
    isWidth: isKeyword('width'),
    isZIndex: isZIndex
  };
}

module.exports = validator;

},{}],58:[function(require,module,exports){
var Hack = require('./hack');

var Marker = require('../tokenizer/marker');
var Token = require('../tokenizer/token');

var Match = {
  ASTERISK: '*',
  BACKSLASH: '\\',
  BANG: '!',
  BANG_SUFFIX_PATTERN: /!\w+$/,
  IMPORTANT_TOKEN: '!important',
  IMPORTANT_TOKEN_PATTERN: new RegExp('!important$', 'i'),
  IMPORTANT_WORD: 'important',
  IMPORTANT_WORD_PATTERN: new RegExp('important$', 'i'),
  SUFFIX_BANG_PATTERN: /!$/,
  UNDERSCORE: '_',
  VARIABLE_REFERENCE_PATTERN: /var\(--.+\)$/
};

function wrapAll(properties, includeVariable, skipProperties) {
  var wrapped = [];
  var single;
  var property;
  var i;

  for (i = properties.length - 1; i >= 0; i--) {
    property = properties[i];

    if (property[0] != Token.PROPERTY) {
      continue;
    }

    if (!includeVariable && someVariableReferences(property)) {
      continue;
    }

    if (skipProperties && skipProperties.indexOf(property[1][1]) > -1) {
      continue;
    }

    single = wrapSingle(property);
    single.all = properties;
    single.position = i;
    wrapped.unshift(single);
  }

  return wrapped;
}

function someVariableReferences(property) {
  var i, l;
  var value;

  // skipping `property` and property name tokens
  for (i = 2, l = property.length; i < l; i++) {
    value = property[i];

    if (value[0] != Token.PROPERTY_VALUE) {
      continue;
    }

    if (isVariableReference(value[1])) {
      return true;
    }
  }

  return false;
}

function isVariableReference(value) {
  return Match.VARIABLE_REFERENCE_PATTERN.test(value);
}

function isMultiplex(property) {
  var value;
  var i, l;

  for (i = 3, l = property.length; i < l; i++) {
    value = property[i];

    if (value[0] == Token.PROPERTY_VALUE && (value[1] == Marker.COMMA || value[1] == Marker.FORWARD_SLASH)) {
      return true;
    }
  }

  return false;
}

function hackFrom(property) {
  var match = false;
  var name = property[1][1];
  var lastValue = property[property.length - 1];

  if (name[0] == Match.UNDERSCORE) {
    match = [Hack.UNDERSCORE];
  } else if (name[0] == Match.ASTERISK) {
    match = [Hack.ASTERISK];
  } else if (lastValue[1][0] == Match.BANG && !lastValue[1].match(Match.IMPORTANT_WORD_PATTERN)) {
    match = [Hack.BANG];
  } else if (lastValue[1].indexOf(Match.BANG) > 0 && !lastValue[1].match(Match.IMPORTANT_WORD_PATTERN) && Match.BANG_SUFFIX_PATTERN.test(lastValue[1])) {
    match = [Hack.BANG];
  } else if (lastValue[1].indexOf(Match.BACKSLASH) > 0 && lastValue[1].indexOf(Match.BACKSLASH) == lastValue[1].length - Match.BACKSLASH.length - 1) {
    match = [Hack.BACKSLASH, lastValue[1].substring(lastValue[1].indexOf(Match.BACKSLASH) + 1)];
  } else if (lastValue[1].indexOf(Match.BACKSLASH) === 0 && lastValue[1].length == 2) {
    match = [Hack.BACKSLASH, lastValue[1].substring(1)];
  }

  return match;
}

function isImportant(property) {
  if (property.length < 3)
    return false;

  var lastValue = property[property.length - 1];
  if (Match.IMPORTANT_TOKEN_PATTERN.test(lastValue[1])) {
    return true;
  } else if (Match.IMPORTANT_WORD_PATTERN.test(lastValue[1]) && Match.SUFFIX_BANG_PATTERN.test(property[property.length - 2][1])) {
    return true;
  }

  return false;
}

function stripImportant(property) {
  var lastValue = property[property.length - 1];
  var oneButLastValue = property[property.length - 2];

  if (Match.IMPORTANT_TOKEN_PATTERN.test(lastValue[1])) {
    lastValue[1] = lastValue[1].replace(Match.IMPORTANT_TOKEN_PATTERN, '');
  } else {
    lastValue[1] = lastValue[1].replace(Match.IMPORTANT_WORD_PATTERN, '');
    oneButLastValue[1] = oneButLastValue[1].replace(Match.SUFFIX_BANG_PATTERN, '');
  }

  if (lastValue[1].length === 0) {
    property.pop();
  }

  if (oneButLastValue[1].length === 0) {
    property.pop();
  }
}

function stripPrefixHack(property) {
  property[1][1] = property[1][1].substring(1);
}

function stripSuffixHack(property, hackFrom) {
  var lastValue = property[property.length - 1];
  lastValue[1] = lastValue[1]
    .substring(0, lastValue[1].indexOf(hackFrom[0] == Hack.BACKSLASH ? Match.BACKSLASH : Match.BANG))
    .trim();

  if (lastValue[1].length === 0) {
    property.pop();
  }
}

function wrapSingle(property) {
  var importantProperty = isImportant(property);
  if (importantProperty) {
    stripImportant(property);
  }

  var whichHack = hackFrom(property);
  if (whichHack[0] == Hack.ASTERISK || whichHack[0] == Hack.UNDERSCORE) {
    stripPrefixHack(property);
  } else if (whichHack[0] == Hack.BACKSLASH || whichHack[0] == Hack.BANG) {
    stripSuffixHack(property, whichHack);
  }

  return {
    block: property[2] && property[2][0] == Token.PROPERTY_BLOCK,
    components: [],
    dirty: false,
    hack: whichHack,
    important: importantProperty,
    name: property[1][1],
    multiplex: property.length > 3 ? isMultiplex(property) : false,
    position: 0,
    shorthand: false,
    unused: false,
    value: property.slice(2)
  };
}

module.exports = {
  all: wrapAll,
  single: wrapSingle
};

},{"../tokenizer/marker":83,"../tokenizer/token":84,"./hack":8}],59:[function(require,module,exports){
var DEFAULTS = {
  '*': {
    colors: {
      opacity: true // rgba / hsla
    },
    properties: {
      backgroundClipMerging: true, // background-clip to shorthand
      backgroundOriginMerging: true, // background-origin to shorthand
      backgroundSizeMerging: true, // background-size to shorthand
      colors: true, // any kind of color transformations, like `#ff00ff` to `#f0f` or `#fff` into `red`
      ieBangHack: false, // !ie suffix hacks on IE<8
      ieFilters: false, // whether to preserve `filter` and `-ms-filter` properties
      iePrefixHack: false, // underscore / asterisk prefix hacks on IE
      ieSuffixHack: false, // \9 suffix hacks on IE6-9
      merging: true, // merging properties into one
      shorterLengthUnits: false, // optimize pixel units into `pt`, `pc` or `in` units
      spaceAfterClosingBrace: true, // 'url() no-repeat' to 'url()no-repeat'
      urlQuotes: false, // whether to wrap content of `url()` into quotes or not
      zeroUnits: true // 0[unit] -> 0
    },
    selectors: {
      adjacentSpace: false, // div+ nav Android stock browser hack
      ie7Hack: false, // *+html hack
      mergeablePseudoClasses: [
        ':active',
        ':after',
        ':before',
        ':empty',
        ':checked',
        ':disabled',
        ':empty',
        ':enabled',
        ':first-child',
        ':first-letter',
        ':first-line',
        ':first-of-type',
        ':focus',
        ':hover',
        ':lang',
        ':last-child',
        ':last-of-type',
        ':link',
        ':not',
        ':nth-child',
        ':nth-last-child',
        ':nth-last-of-type',
        ':nth-of-type',
        ':only-child',
        ':only-of-type',
        ':root',
        ':target',
        ':visited'
      ], // selectors with these pseudo-classes can be merged as these are universally supported
      mergeablePseudoElements: [
        '::after',
        '::before',
        '::first-letter',
        '::first-line'
      ], // selectors with these pseudo-elements can be merged as these are universally supported
      mergeLimit: 8191, // number of rules that can be safely merged together
      multiplePseudoMerging: true
    },
    units: {
      ch: true,
      in: true,
      pc: true,
      pt: true,
      rem: true,
      vh: true,
      vm: true, // vm is vmin on IE9+ see https://developer.mozilla.org/en-US/docs/Web/CSS/length
      vmax: true,
      vmin: true,
      vw: true
    }
  }
};

DEFAULTS.ie11 = DEFAULTS['*'];

DEFAULTS.ie10 = DEFAULTS['*'];

DEFAULTS.ie9 = merge(DEFAULTS['*'], {
  properties: {
    ieFilters: true,
    ieSuffixHack: true
  }
});

DEFAULTS.ie8 = merge(DEFAULTS.ie9, {
  colors: {
    opacity: false
  },
  properties: {
    backgroundClipMerging: false,
    backgroundOriginMerging: false,
    backgroundSizeMerging: false,
    iePrefixHack: true,
    merging: false
  },
  selectors: {
    mergeablePseudoClasses: [
      ':after',
      ':before',
      ':first-child',
      ':first-letter',
      ':focus',
      ':hover',
      ':visited'
    ],
    mergeablePseudoElements: []
  },
  units: {
    ch: false,
    rem: false,
    vh: false,
    vm: false,
    vmax: false,
    vmin: false,
    vw: false
  }
});

DEFAULTS.ie7 = merge(DEFAULTS.ie8, {
  properties: {
    ieBangHack: true
  },
  selectors: {
    ie7Hack: true,
    mergeablePseudoClasses: [
      ':first-child',
      ':first-letter',
      ':hover',
      ':visited'
    ]
  },
});

function compatibilityFrom(source) {
  return merge(DEFAULTS['*'], calculateSource(source));
}

function merge(source, target) {
  for (var key in source) {
    var value = source[key];

    if (typeof value === 'object' && !Array.isArray(value)) {
      target[key] = merge(value, target[key] || {});
    } else {
      target[key] = key in target ? target[key] : value;
    }
  }

  return target;
}

function calculateSource(source) {
  if (typeof source == 'object')
    return source;

  if (!/[,\+\-]/.test(source))
    return DEFAULTS[source] || DEFAULTS['*'];

  var parts = source.split(',');
  var template = parts[0] in DEFAULTS ?
    DEFAULTS[parts.shift()] :
    DEFAULTS['*'];

  source = {};

  parts.forEach(function (part) {
    var isAdd = part[0] == '+';
    var key = part.substring(1).split('.');
    var group = key[0];
    var option = key[1];

    source[group] = source[group] || {};
    source[group][option] = isAdd;
  });

  return merge(template, source);
}

module.exports = compatibilityFrom;

},{}],60:[function(require,module,exports){
var loadRemoteResource = require('../reader/load-remote-resource');

function fetchFrom(callback) {
  return callback || loadRemoteResource;
}

module.exports = fetchFrom;

},{"../reader/load-remote-resource":74}],61:[function(require,module,exports){
var systemLineBreak = require('os').EOL;

var override = require('../utils/override');

var Breaks = {
  AfterAtRule: 'afterAtRule',
  AfterBlockBegins: 'afterBlockBegins',
  AfterBlockEnds: 'afterBlockEnds',
  AfterComment: 'afterComment',
  AfterProperty: 'afterProperty',
  AfterRuleBegins: 'afterRuleBegins',
  AfterRuleEnds: 'afterRuleEnds',
  BeforeBlockEnds: 'beforeBlockEnds',
  BetweenSelectors: 'betweenSelectors'
};

var BreakWith = {
  CarriageReturnLineFeed: '\r\n',
  LineFeed: '\n',
  System: systemLineBreak
};

var IndentWith = {
  Space: ' ',
  Tab: '\t'
};

var Spaces = {
  AroundSelectorRelation: 'aroundSelectorRelation',
  BeforeBlockBegins: 'beforeBlockBegins',
  BeforeValue: 'beforeValue'
};

var DEFAULTS = {
  breaks: breaks(false),
  breakWith: BreakWith.System,
  indentBy: 0,
  indentWith: IndentWith.Space,
  spaces: spaces(false),
  wrapAt: false,
  semicolonAfterLastProperty: false
};

var BEAUTIFY_ALIAS = 'beautify';
var KEEP_BREAKS_ALIAS = 'keep-breaks';

var OPTION_SEPARATOR = ';';
var OPTION_NAME_VALUE_SEPARATOR = ':';
var HASH_VALUES_OPTION_SEPARATOR = ',';
var HASH_VALUES_NAME_VALUE_SEPARATOR = '=';

var FALSE_KEYWORD_1 = 'false';
var FALSE_KEYWORD_2 = 'off';
var TRUE_KEYWORD_1 = 'true';
var TRUE_KEYWORD_2 = 'on';

function breaks(value) {
  var breakOptions = {};

  breakOptions[Breaks.AfterAtRule] = value;
  breakOptions[Breaks.AfterBlockBegins] = value;
  breakOptions[Breaks.AfterBlockEnds] = value;
  breakOptions[Breaks.AfterComment] = value;
  breakOptions[Breaks.AfterProperty] = value;
  breakOptions[Breaks.AfterRuleBegins] = value;
  breakOptions[Breaks.AfterRuleEnds] = value;
  breakOptions[Breaks.BeforeBlockEnds] = value;
  breakOptions[Breaks.BetweenSelectors] = value;

  return breakOptions;
}

function spaces(value) {
  var spaceOptions = {};

  spaceOptions[Spaces.AroundSelectorRelation] = value;
  spaceOptions[Spaces.BeforeBlockBegins] = value;
  spaceOptions[Spaces.BeforeValue] = value;

  return spaceOptions;
}

function formatFrom(source) {
  if (source === undefined || source === false) {
    return false;
  }

  if (typeof source == 'object' && 'breakWith' in source) {
    source = override(source, { breakWith: mapBreakWith(source.breakWith) });
  }

  if (typeof source == 'object' && 'indentBy' in source) {
    source = override(source, { indentBy: parseInt(source.indentBy) });
  }

  if (typeof source == 'object' && 'indentWith' in source) {
    source = override(source, { indentWith: mapIndentWith(source.indentWith) });
  }

  if (typeof source == 'object') {
    return override(DEFAULTS, source);
  }

  if (typeof source == 'object') {
    return override(DEFAULTS, source);
  }

  if (typeof source == 'string' && source == BEAUTIFY_ALIAS) {
    return override(DEFAULTS, {
      breaks: breaks(true),
      indentBy: 2,
      spaces: spaces(true)
    });
  }

  if (typeof source == 'string' && source == KEEP_BREAKS_ALIAS) {
    return override(DEFAULTS, {
      breaks: {
        afterAtRule: true,
        afterBlockBegins: true,
        afterBlockEnds: true,
        afterComment: true,
        afterRuleEnds: true,
        beforeBlockEnds: true
      }
    });
  }

  if (typeof source == 'string') {
    return override(DEFAULTS, toHash(source));
  }

  return DEFAULTS;
}

function toHash(string) {
  return string
    .split(OPTION_SEPARATOR)
    .reduce(function (accumulator, directive) {
      var parts = directive.split(OPTION_NAME_VALUE_SEPARATOR);
      var name = parts[0];
      var value = parts[1];

      if (name == 'breaks' || name == 'spaces') {
        accumulator[name] = hashValuesToHash(value);
      } else if (name == 'indentBy' || name == 'wrapAt') {
        accumulator[name] = parseInt(value);
      } else if (name == 'indentWith') {
        accumulator[name] = mapIndentWith(value);
      } else if (name == 'breakWith') {
        accumulator[name] = mapBreakWith(value);
      }

      return accumulator;
    }, {});
}

function hashValuesToHash(string) {
  return string
    .split(HASH_VALUES_OPTION_SEPARATOR)
    .reduce(function (accumulator, directive) {
      var parts = directive.split(HASH_VALUES_NAME_VALUE_SEPARATOR);
      var name = parts[0];
      var value = parts[1];

      accumulator[name] = normalizeValue(value);

      return accumulator;
    }, {});
}


function normalizeValue(value) {
  switch (value) {
    case FALSE_KEYWORD_1:
    case FALSE_KEYWORD_2:
      return false;
    case TRUE_KEYWORD_1:
    case TRUE_KEYWORD_2:
      return true;
    default:
      return value;
  }
}

function mapBreakWith(value) {
  switch (value) {
    case 'windows':
    case 'crlf':
    case BreakWith.CarriageReturnLineFeed:
      return BreakWith.CarriageReturnLineFeed;
    case 'unix':
    case 'lf':
    case BreakWith.LineFeed:
      return BreakWith.LineFeed;
    default:
      return systemLineBreak;
  }
}

function mapIndentWith(value) {
  switch (value) {
    case 'space':
      return IndentWith.Space;
    case 'tab':
      return IndentWith.Tab;
    default:
      return value;
  }
}

module.exports = {
  Breaks: Breaks,
  Spaces: Spaces,
  formatFrom: formatFrom
};

},{"../utils/override":95,"os":109}],62:[function(require,module,exports){
(function (process){
var url = require('url');

var override = require('../utils/override');

function inlineRequestFrom(option) {
  return override(
    /* jshint camelcase: false */
    proxyOptionsFrom(process.env.HTTP_PROXY || process.env.http_proxy),
    option || {}
  );
}

function proxyOptionsFrom(httpProxy) {
  return httpProxy ?
    {
      hostname: url.parse(httpProxy).hostname,
      port: parseInt(url.parse(httpProxy).port)
    } :
    {};
}

module.exports = inlineRequestFrom;

}).call(this,require('_process'))
},{"../utils/override":95,"_process":112,"url":162}],63:[function(require,module,exports){
var DEFAULT_TIMEOUT = 5000;

function inlineTimeoutFrom(option) {
  return option || DEFAULT_TIMEOUT;
}

module.exports = inlineTimeoutFrom;

},{}],64:[function(require,module,exports){
function inlineOptionsFrom(rules) {
  if (Array.isArray(rules)) {
    return rules;
  }

  if (rules === false) {
    return ['none'];
  }

  return undefined === rules ?
    ['local'] :
    rules.split(',');
}

module.exports = inlineOptionsFrom;

},{}],65:[function(require,module,exports){
var roundingPrecisionFrom = require('./rounding-precision').roundingPrecisionFrom;

var override = require('../utils/override');

var OptimizationLevel = {
  Zero: '0',
  One: '1',
  Two: '2'
};

var DEFAULTS = {};

DEFAULTS[OptimizationLevel.Zero] = {};
DEFAULTS[OptimizationLevel.One] = {
  cleanupCharsets: true,
  normalizeUrls: true,
  optimizeBackground: true,
  optimizeBorderRadius: true,
  optimizeFilter: true,
  optimizeFontWeight: true,
  optimizeOutline: true,
  removeEmpty: true,
  removeNegativePaddings: true,
  removeQuotes: true,
  removeWhitespace: true,
  replaceMultipleZeros: true,
  replaceTimeUnits: true,
  replaceZeroUnits: true,
  roundingPrecision: roundingPrecisionFrom(undefined),
  selectorsSortingMethod: 'standard',
  specialComments: 'all',
  tidyAtRules: true,
  tidyBlockScopes: true,
  tidySelectors: true,
  transform: noop
};
DEFAULTS[OptimizationLevel.Two] = {
  mergeAdjacentRules: true,
  mergeIntoShorthands: true,
  mergeMedia: true,
  mergeNonAdjacentRules: true,
  mergeSemantically: false,
  overrideProperties: true,
  removeEmpty: true,
  reduceNonAdjacentRules: true,
  removeDuplicateFontRules: true,
  removeDuplicateMediaBlocks: true,
  removeDuplicateRules: true,
  removeUnusedAtRules: false,
  restructureRules: false,
  skipProperties: []
};

var ALL_KEYWORD_1 = '*';
var ALL_KEYWORD_2 = 'all';
var FALSE_KEYWORD_1 = 'false';
var FALSE_KEYWORD_2 = 'off';
var TRUE_KEYWORD_1 = 'true';
var TRUE_KEYWORD_2 = 'on';

var LIST_VALUE_SEPARATOR = ',';
var OPTION_SEPARATOR = ';';
var OPTION_VALUE_SEPARATOR = ':';

function noop() {}

function optimizationLevelFrom(source) {
  var level = override(DEFAULTS, {});
  var Zero = OptimizationLevel.Zero;
  var One = OptimizationLevel.One;
  var Two = OptimizationLevel.Two;


  if (undefined === source) {
    delete level[Two];
    return level;
  }

  if (typeof source == 'string') {
    source = parseInt(source);
  }

  if (typeof source == 'number' && source === parseInt(Two)) {
    return level;
  }

  if (typeof source == 'number' && source === parseInt(One)) {
    delete level[Two];
    return level;
  }

  if (typeof source == 'number' && source === parseInt(Zero)) {
    delete level[Two];
    delete level[One];
    return level;
  }

  if (typeof source == 'object') {
    source = covertValuesToHashes(source);
  }

  if (One in source && 'roundingPrecision' in source[One]) {
    source[One].roundingPrecision = roundingPrecisionFrom(source[One].roundingPrecision);
  }

  if (Two in source && 'skipProperties' in source[Two] && typeof(source[Two].skipProperties) == 'string') {
    source[Two].skipProperties = source[Two].skipProperties.split(LIST_VALUE_SEPARATOR);
  }

  if (Zero in source || One in source || Two in source) {
    level[Zero] = override(level[Zero], source[Zero]);
  }

  if (One in source && ALL_KEYWORD_1 in source[One]) {
    level[One] = override(level[One], defaults(One, normalizeValue(source[One][ALL_KEYWORD_1])));
    delete source[One][ALL_KEYWORD_1];
  }

  if (One in source && ALL_KEYWORD_2 in source[One]) {
    level[One] = override(level[One], defaults(One, normalizeValue(source[One][ALL_KEYWORD_2])));
    delete source[One][ALL_KEYWORD_2];
  }

  if (One in source || Two in source) {
    level[One] = override(level[One], source[One]);
  } else {
    delete level[One];
  }

  if (Two in source && ALL_KEYWORD_1 in source[Two]) {
    level[Two] = override(level[Two], defaults(Two, normalizeValue(source[Two][ALL_KEYWORD_1])));
    delete source[Two][ALL_KEYWORD_1];
  }

  if (Two in source && ALL_KEYWORD_2 in source[Two]) {
    level[Two] = override(level[Two], defaults(Two, normalizeValue(source[Two][ALL_KEYWORD_2])));
    delete source[Two][ALL_KEYWORD_2];
  }

  if (Two in source) {
    level[Two] = override(level[Two], source[Two]);
  } else {
    delete level[Two];
  }

  return level;
}

function defaults(level, value) {
  var options = override(DEFAULTS[level], {});
  var key;

  for (key in options) {
    if (typeof options[key] == 'boolean') {
      options[key] = value;
    }
  }

  return options;
}

function normalizeValue(value) {
  switch (value) {
    case FALSE_KEYWORD_1:
    case FALSE_KEYWORD_2:
      return false;
    case TRUE_KEYWORD_1:
    case TRUE_KEYWORD_2:
      return true;
    default:
      return value;
  }
}

function covertValuesToHashes(source) {
  var clonedSource = override(source, {});
  var level;
  var i;

  for (i = 0; i <= 2; i++) {
    level = '' + i;

    if (level in clonedSource && (clonedSource[level] === undefined || clonedSource[level] === false)) {
      delete clonedSource[level];
    }

    if (level in clonedSource && clonedSource[level] === true) {
      clonedSource[level] = {};
    }

    if (level in clonedSource && typeof clonedSource[level] == 'string') {
      clonedSource[level] = covertToHash(clonedSource[level], level);
    }
  }

  return clonedSource;
}

function covertToHash(asString, level) {
  return asString
    .split(OPTION_SEPARATOR)
    .reduce(function (accumulator, directive) {
      var parts = directive.split(OPTION_VALUE_SEPARATOR);
      var name = parts[0];
      var value = parts[1];
      var normalizedValue = normalizeValue(value);

      if (ALL_KEYWORD_1 == name || ALL_KEYWORD_2 == name) {
        accumulator = override(accumulator, defaults(level, normalizedValue));
      } else {
        accumulator[name] = normalizedValue;
      }

      return accumulator;
    }, {});
}

module.exports = {
  OptimizationLevel: OptimizationLevel,
  optimizationLevelFrom: optimizationLevelFrom,
};

},{"../utils/override":95,"./rounding-precision":68}],66:[function(require,module,exports){
(function (process){
var path = require('path');

function rebaseToFrom(option) {
  return option ? path.resolve(option) : process.cwd();
}

module.exports = rebaseToFrom;

}).call(this,require('_process'))
},{"_process":112,"path":110}],67:[function(require,module,exports){
function rebaseFrom(rebaseOption) {
  return undefined === rebaseOption ? true : !!rebaseOption;
}

module.exports = rebaseFrom;

},{}],68:[function(require,module,exports){
var override = require('../utils/override');

var INTEGER_PATTERN = /^\d+$/;

var ALL_UNITS = ['*', 'all'];
var DEFAULT_PRECISION = 'off'; // all precision changes are disabled
var DIRECTIVES_SEPARATOR = ','; // e.g. *=5,px=3
var DIRECTIVE_VALUE_SEPARATOR = '='; // e.g. *=5

function roundingPrecisionFrom(source) {
  return override(defaults(DEFAULT_PRECISION), buildPrecisionFrom(source));
}

function defaults(value) {
  return {
    'ch': value,
    'cm': value,
    'em': value,
    'ex': value,
    'in': value,
    'mm': value,
    'pc': value,
    'pt': value,
    'px': value,
    'q': value,
    'rem': value,
    'vh': value,
    'vmax': value,
    'vmin': value,
    'vw': value,
    '%': value
  };
}

function buildPrecisionFrom(source) {
  if (source === null || source === undefined) {
    return {};
  }

  if (typeof source == 'boolean') {
    return {};
  }

  if (typeof source == 'number' && source == -1) {
    return defaults(DEFAULT_PRECISION);
  }

  if (typeof source == 'number') {
    return defaults(source);
  }

  if (typeof source == 'string' && INTEGER_PATTERN.test(source)) {
    return defaults(parseInt(source));
  }

  if (typeof source == 'string' && source == DEFAULT_PRECISION) {
    return defaults(DEFAULT_PRECISION);
  }

  if (typeof source == 'object') {
    return source;
  }

  return source
    .split(DIRECTIVES_SEPARATOR)
    .reduce(function (accumulator, directive) {
      var directiveParts = directive.split(DIRECTIVE_VALUE_SEPARATOR);
      var name = directiveParts[0];
      var value = parseInt(directiveParts[1]);

      if (isNaN(value) || value == -1) {
        value = DEFAULT_PRECISION;
      }

      if (ALL_UNITS.indexOf(name) > -1) {
        accumulator = override(accumulator, defaults(value));
      } else {
        accumulator[name] = value;
      }

      return accumulator;
    }, {});
}

module.exports = {
  DEFAULT: DEFAULT_PRECISION,
  roundingPrecisionFrom: roundingPrecisionFrom
};

},{"../utils/override":95}],69:[function(require,module,exports){
(function (global,Buffer){
var fs = require('fs');
var path = require('path');

var isAllowedResource = require('./is-allowed-resource');
var matchDataUri = require('./match-data-uri');
var rebaseLocalMap = require('./rebase-local-map');
var rebaseRemoteMap = require('./rebase-remote-map');

var Token = require('../tokenizer/token');
var hasProtocol = require('../utils/has-protocol');
var isDataUriResource = require('../utils/is-data-uri-resource');
var isRemoteResource = require('../utils/is-remote-resource');

var MAP_MARKER_PATTERN = /^\/\*# sourceMappingURL=(\S+) \*\/$/;

function applySourceMaps(tokens, context, callback) {
  var applyContext = {
    callback: callback,
    fetch: context.options.fetch,
    index: 0,
    inline: context.options.inline,
    inlineRequest: context.options.inlineRequest,
    inlineTimeout: context.options.inlineTimeout,
    inputSourceMapTracker: context.inputSourceMapTracker,
    localOnly: context.localOnly,
    processedTokens: [],
    rebaseTo: context.options.rebaseTo,
    sourceTokens: tokens,
    warnings: context.warnings
  };

  return context.options.sourceMap && tokens.length > 0 ?
    doApplySourceMaps(applyContext) :
    callback(tokens);
}

function doApplySourceMaps(applyContext) {
  var singleSourceTokens = [];
  var lastSource = findTokenSource(applyContext.sourceTokens[0]);
  var source;
  var token;
  var l;

  for (l = applyContext.sourceTokens.length; applyContext.index < l; applyContext.index++) {
    token = applyContext.sourceTokens[applyContext.index];
    source = findTokenSource(token);

    if (source != lastSource) {
      singleSourceTokens = [];
      lastSource = source;
    }

    singleSourceTokens.push(token);
    applyContext.processedTokens.push(token);

    if (token[0] == Token.COMMENT && MAP_MARKER_PATTERN.test(token[1])) {
      return fetchAndApplySourceMap(token[1], source, singleSourceTokens, applyContext);
    }
  }

  return applyContext.callback(applyContext.processedTokens);
}

function findTokenSource(token) {
  var scope;
  var metadata;

  if (token[0] == Token.AT_RULE || token[0] == Token.COMMENT) {
    metadata = token[2][0];
  } else {
    scope = token[1][0];
    metadata = scope[2][0];
  }

  return metadata[2];
}

function fetchAndApplySourceMap(sourceMapComment, source, singleSourceTokens, applyContext) {
  return extractInputSourceMapFrom(sourceMapComment, applyContext, function (inputSourceMap) {
    if (inputSourceMap) {
      applyContext.inputSourceMapTracker.track(source, inputSourceMap);
      applySourceMapRecursively(singleSourceTokens, applyContext.inputSourceMapTracker);
    }

    applyContext.index++;
    return doApplySourceMaps(applyContext);
  });
}

function extractInputSourceMapFrom(sourceMapComment, applyContext, whenSourceMapReady) {
  var uri = MAP_MARKER_PATTERN.exec(sourceMapComment)[1];
  var absoluteUri;
  var sourceMap;
  var rebasedMap;

  if (isDataUriResource(uri)) {
    sourceMap = extractInputSourceMapFromDataUri(uri);
    return whenSourceMapReady(sourceMap);
  } else if (isRemoteResource(uri)) {
    return loadInputSourceMapFromRemoteUri(uri, applyContext, function (sourceMap) {
      var parsedMap;

      if (sourceMap) {
        parsedMap = JSON.parse(sourceMap);
        rebasedMap = rebaseRemoteMap(parsedMap, uri);
        whenSourceMapReady(rebasedMap);
      } else {
        whenSourceMapReady(null);
      }
    });
  } else {
    // at this point `uri` is already rebased, see lib/reader/rebase.js#rebaseSourceMapComment
    // it is rebased to be consistent with rebasing other URIs
    // however here we need to resolve it back to read it from disk
    absoluteUri = path.resolve(applyContext.rebaseTo, uri);
    sourceMap = loadInputSourceMapFromLocalUri(absoluteUri, applyContext);

    if (sourceMap) {
      rebasedMap = rebaseLocalMap(sourceMap, absoluteUri, applyContext.rebaseTo);
      return whenSourceMapReady(rebasedMap);
    } else {
      return whenSourceMapReady(null);
    }
  }
}

function extractInputSourceMapFromDataUri(uri) {
  var dataUriMatch = matchDataUri(uri);
  var charset = dataUriMatch[2] ? dataUriMatch[2].split(/[=;]/)[2] : 'us-ascii';
  var encoding = dataUriMatch[3] ? dataUriMatch[3].split(';')[1] : 'utf8';
  var data = encoding == 'utf8' ? global.unescape(dataUriMatch[4]) : dataUriMatch[4];

  var buffer = new Buffer(data, encoding);
  buffer.charset = charset;

  return JSON.parse(buffer.toString());
}

function loadInputSourceMapFromRemoteUri(uri, applyContext, whenLoaded) {
  var isAllowed = isAllowedResource(uri, true, applyContext.inline);
  var isRuntimeResource = !hasProtocol(uri);

  if (applyContext.localOnly) {
    applyContext.warnings.push('Cannot fetch remote resource from "' + uri + '" as no callback given.');
    return whenLoaded(null);
  } else if (isRuntimeResource) {
    applyContext.warnings.push('Cannot fetch "' + uri + '" as no protocol given.');
    return whenLoaded(null);
  } else if (!isAllowed) {
    applyContext.warnings.push('Cannot fetch "' + uri + '" as resource is not allowed.');
    return whenLoaded(null);
  }

  applyContext.fetch(uri, applyContext.inlineRequest, applyContext.inlineTimeout, function (error, body) {
    if (error) {
      applyContext.warnings.push('Missing source map at "' + uri + '" - ' + error);
      return whenLoaded(null);
    }

    whenLoaded(body);
  });
}

function loadInputSourceMapFromLocalUri(uri, applyContext) {
  var isAllowed = isAllowedResource(uri, false, applyContext.inline);
  var sourceMap;

  if (!fs.existsSync(uri) || !fs.statSync(uri).isFile()) {
    applyContext.warnings.push('Ignoring local source map at "' + uri + '" as resource is missing.');
    return null;
  } else if (!isAllowed) {
    applyContext.warnings.push('Cannot fetch "' + uri + '" as resource is not allowed.');
    return null;
  }

  sourceMap = fs.readFileSync(uri, 'utf-8');
  return JSON.parse(sourceMap);
}

function applySourceMapRecursively(tokens, inputSourceMapTracker) {
  var token;
  var i, l;

  for (i = 0, l = tokens.length; i < l; i++) {
    token = tokens[i];

    switch (token[0]) {
      case Token.AT_RULE:
        applySourceMapTo(token, inputSourceMapTracker);
        break;
      case Token.AT_RULE_BLOCK:
        applySourceMapRecursively(token[1], inputSourceMapTracker);
        applySourceMapRecursively(token[2], inputSourceMapTracker);
        break;
      case Token.AT_RULE_BLOCK_SCOPE:
        applySourceMapTo(token, inputSourceMapTracker);
        break;
      case Token.NESTED_BLOCK:
        applySourceMapRecursively(token[1], inputSourceMapTracker);
        applySourceMapRecursively(token[2], inputSourceMapTracker);
        break;
      case Token.NESTED_BLOCK_SCOPE:
        applySourceMapTo(token, inputSourceMapTracker);
        break;
      case Token.COMMENT:
        applySourceMapTo(token, inputSourceMapTracker);
        break;
      case Token.PROPERTY:
        applySourceMapRecursively(token, inputSourceMapTracker);
        break;
      case Token.PROPERTY_BLOCK:
        applySourceMapRecursively(token[1], inputSourceMapTracker);
        break;
      case Token.PROPERTY_NAME:
        applySourceMapTo(token, inputSourceMapTracker);
        break;
      case Token.PROPERTY_VALUE:
        applySourceMapTo(token, inputSourceMapTracker);
        break;
      case Token.RULE:
        applySourceMapRecursively(token[1], inputSourceMapTracker);
        applySourceMapRecursively(token[2], inputSourceMapTracker);
        break;
      case Token.RULE_SCOPE:
        applySourceMapTo(token, inputSourceMapTracker);
    }
  }

  return tokens;
}

function applySourceMapTo(token, inputSourceMapTracker) {
  var value = token[1];
  var metadata = token[2];
  var newMetadata = [];
  var i, l;

  for (i = 0, l = metadata.length; i < l; i++) {
    newMetadata.push(inputSourceMapTracker.originalPositionFor(metadata[i], value.length));
  }

  token[2] = newMetadata;
}

module.exports = applySourceMaps;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer)
},{"../tokenizer/token":84,"../utils/has-protocol":88,"../utils/is-data-uri-resource":89,"../utils/is-remote-resource":93,"./is-allowed-resource":72,"./match-data-uri":75,"./rebase-local-map":78,"./rebase-remote-map":79,"buffer":4,"fs":3,"path":110}],70:[function(require,module,exports){
var split = require('../utils/split');

var BRACE_PREFIX = /^\(/;
var BRACE_SUFFIX = /\)$/;
var IMPORT_PREFIX_PATTERN = /^@import/i;
var QUOTE_PREFIX_PATTERN = /['"]\s*/;
var QUOTE_SUFFIX_PATTERN = /\s*['"]/;
var URL_PREFIX_PATTERN = /^url\(\s*/i;
var URL_SUFFIX_PATTERN = /\s*\)/i;

function extractImportUrlAndMedia(atRuleValue) {
  var uri;
  var mediaQuery;
  var stripped;
  var parts;

  stripped = atRuleValue
    .replace(IMPORT_PREFIX_PATTERN, '')
    .trim()
    .replace(URL_PREFIX_PATTERN, '(')
    .replace(URL_SUFFIX_PATTERN, ')')
    .replace(QUOTE_PREFIX_PATTERN, '')
    .replace(QUOTE_SUFFIX_PATTERN, '');

  parts = split(stripped, ' ');

  uri = parts[0]
    .replace(BRACE_PREFIX, '')
    .replace(BRACE_SUFFIX, '');
  mediaQuery = parts.slice(1).join(' ');

  return [uri, mediaQuery];
}

module.exports = extractImportUrlAndMedia;

},{"../utils/split":96}],71:[function(require,module,exports){
var SourceMapConsumer = require('source-map').SourceMapConsumer;

function inputSourceMapTracker() {
  var maps = {};

  return {
    all: all.bind(null, maps),
    isTracking: isTracking.bind(null, maps),
    originalPositionFor: originalPositionFor.bind(null, maps),
    track: track.bind(null, maps)
  };
}

function all(maps) {
  return maps;
}

function isTracking(maps, source) {
  return source in maps;
}

function originalPositionFor(maps, metadata, range, selectorFallbacks) {
  var line = metadata[0];
  var column = metadata[1];
  var source = metadata[2];
  var position = {
    line: line,
    column: column + range
  };
  var originalPosition;

  while (!originalPosition && position.column > column) {
    position.column--;
    originalPosition = maps[source].originalPositionFor(position);
  }

  if (!originalPosition || originalPosition.column < 0) {
    return metadata;
  }

  if (originalPosition.line === null && line > 1 && selectorFallbacks > 0) {
    return originalPositionFor(maps, [line - 1, column, source], range, selectorFallbacks - 1);
  }

  return originalPosition.line !== null ?
    toMetadata(originalPosition) :
    metadata;
}

function toMetadata(asHash) {
  return [asHash.line, asHash.column, asHash.source];
}

function track(maps, source, data) {
  maps[source] = new SourceMapConsumer(data);
}

module.exports = inputSourceMapTracker;

},{"source-map":154}],72:[function(require,module,exports){
var path = require('path');
var url = require('url');

var isRemoteResource = require('../utils/is-remote-resource');
var hasProtocol = require('../utils/has-protocol');

var HTTP_PROTOCOL = 'http:';

function isAllowedResource(uri, isRemote, rules) {
  var match;
  var absoluteUri;
  var allowed = isRemote ? false : true;
  var rule;
  var isNegated;
  var normalizedRule;
  var i;

  if (rules.length === 0) {
    return false;
  }

  if (isRemote && !hasProtocol(uri)) {
    uri = HTTP_PROTOCOL + uri;
  }

  match = isRemote ?
    url.parse(uri).host :
    uri;

  absoluteUri = isRemote ?
    uri :
    path.resolve(uri);

  for (i = 0; i < rules.length; i++) {
    rule = rules[i];
    isNegated = rule[0] == '!';
    normalizedRule = rule.substring(1);

    if (isNegated && isRemote && isRemoteRule(normalizedRule)) {
      allowed = allowed && !isAllowedResource(uri, true, [normalizedRule]);
    } else if (isNegated && !isRemote && !isRemoteRule(normalizedRule)) {
      allowed = allowed && !isAllowedResource(uri, false, [normalizedRule]);
    } else if (isNegated) {
      allowed = allowed && true;
    } else if (rule == 'all') {
      allowed = true;
    } else if (isRemote && rule == 'local') {
      allowed = allowed || false;
    } else if (isRemote && rule == 'remote') {
      allowed = true;
    } else if (!isRemote && rule == 'remote') {
      allowed = false;
    } else if (!isRemote && rule == 'local') {
      allowed = true;
    } else if (rule === match) {
      allowed = true;
    } else if (rule === uri) {
      allowed = true;
    } else if (isRemote && absoluteUri.indexOf(rule) === 0) {
      allowed = true;
    } else if (!isRemote && absoluteUri.indexOf(path.resolve(rule)) === 0) {
      allowed = true;
    } else if (isRemote != isRemoteRule(normalizedRule)) {
      allowed = allowed && true;
    } else {
      allowed = false;
    }
  }

  return allowed;
}

function isRemoteRule(rule) {
  return isRemoteResource(rule) || url.parse(HTTP_PROTOCOL + '//' + rule).host == rule;
}

module.exports = isAllowedResource;

},{"../utils/has-protocol":88,"../utils/is-remote-resource":93,"path":110,"url":162}],73:[function(require,module,exports){
var fs = require('fs');
var path = require('path');

var isAllowedResource = require('./is-allowed-resource');

var hasProtocol = require('../utils/has-protocol');
var isRemoteResource = require('../utils/is-remote-resource');

function loadOriginalSources(context, callback) {
  var loadContext = {
    callback: callback,
    fetch: context.options.fetch,
    index: 0,
    inline: context.options.inline,
    inlineRequest: context.options.inlineRequest,
    inlineTimeout: context.options.inlineTimeout,
    localOnly: context.localOnly,
    rebaseTo: context.options.rebaseTo,
    sourcesContent: context.sourcesContent,
    uriToSource: uriToSourceMapping(context.inputSourceMapTracker.all()),
    warnings: context.warnings
  };

  return context.options.sourceMap && context.options.sourceMapInlineSources ?
    doLoadOriginalSources(loadContext) :
    callback();
}

function uriToSourceMapping(allSourceMapConsumers) {
  var mapping = {};
  var consumer;
  var uri;
  var source;
  var i, l;

  for (source in allSourceMapConsumers) {
    consumer = allSourceMapConsumers[source];

    for (i = 0, l = consumer.sources.length; i < l; i++) {
      uri = consumer.sources[i];
      source = consumer.sourceContentFor(uri, true);

      mapping[uri] = source;
    }
  }

  return mapping;
}

function doLoadOriginalSources(loadContext) {
  var uris = Object.keys(loadContext.uriToSource);
  var uri;
  var source;
  var total;

  for (total = uris.length; loadContext.index < total; loadContext.index++) {
    uri = uris[loadContext.index];
    source = loadContext.uriToSource[uri];

    if (source) {
      loadContext.sourcesContent[uri] = source;
    } else {
      return loadOriginalSource(uri, loadContext);
    }
  }

  return loadContext.callback();
}

function loadOriginalSource(uri, loadContext) {
  var content;

  if (isRemoteResource(uri)) {
    return loadOriginalSourceFromRemoteUri(uri, loadContext, function (content) {
      loadContext.index++;
      loadContext.sourcesContent[uri] = content;
      return doLoadOriginalSources(loadContext);
    });
  } else {
    content = loadOriginalSourceFromLocalUri(uri, loadContext);
    loadContext.index++;
    loadContext.sourcesContent[uri] = content;
    return doLoadOriginalSources(loadContext);
  }
}

function loadOriginalSourceFromRemoteUri(uri, loadContext, whenLoaded) {
  var isAllowed = isAllowedResource(uri, true, loadContext.inline);
  var isRuntimeResource = !hasProtocol(uri);

  if (loadContext.localOnly) {
    loadContext.warnings.push('Cannot fetch remote resource from "' + uri + '" as no callback given.');
    return whenLoaded(null);
  } else if (isRuntimeResource) {
    loadContext.warnings.push('Cannot fetch "' + uri + '" as no protocol given.');
    return whenLoaded(null);
  } else if (!isAllowed) {
    loadContext.warnings.push('Cannot fetch "' + uri + '" as resource is not allowed.');
    return whenLoaded(null);
  }

  loadContext.fetch(uri, loadContext.inlineRequest, loadContext.inlineTimeout, function (error, content) {
    if (error) {
      loadContext.warnings.push('Missing original source at "' + uri + '" - ' + error);
    }

    whenLoaded(content);
  });
}

function loadOriginalSourceFromLocalUri(relativeUri, loadContext) {
  var isAllowed = isAllowedResource(relativeUri, false, loadContext.inline);
  var absoluteUri = path.resolve(loadContext.rebaseTo, relativeUri);

  if (!fs.existsSync(absoluteUri) || !fs.statSync(absoluteUri).isFile()) {
    loadContext.warnings.push('Ignoring local source map at "' + absoluteUri + '" as resource is missing.');
    return null;
  } else if (!isAllowed) {
    loadContext.warnings.push('Cannot fetch "' + absoluteUri + '" as resource is not allowed.');
    return null;
  }

  return fs.readFileSync(absoluteUri, 'utf8');
}

module.exports = loadOriginalSources;

},{"../utils/has-protocol":88,"../utils/is-remote-resource":93,"./is-allowed-resource":72,"fs":3,"path":110}],74:[function(require,module,exports){
var http = require('http');
var https = require('https');
var url = require('url');

var isHttpResource = require('../utils/is-http-resource');
var isHttpsResource = require('../utils/is-https-resource');
var override = require('../utils/override');

var HTTP_PROTOCOL = 'http:';

function loadRemoteResource(uri, inlineRequest, inlineTimeout, callback) {
  var proxyProtocol = inlineRequest.protocol || inlineRequest.hostname;
  var errorHandled = false;
  var requestOptions;
  var fetch;

  requestOptions = override(
    url.parse(uri),
    inlineRequest || {}
  );

  if (inlineRequest.hostname !== undefined) {
    // overwrite as we always expect a http proxy currently
    requestOptions.protocol = inlineRequest.protocol || HTTP_PROTOCOL;
    requestOptions.path = requestOptions.href;
  }

  fetch = (proxyProtocol && !isHttpsResource(proxyProtocol)) || isHttpResource(uri) ?
    http.get :
    https.get;

  fetch(requestOptions, function (res) {
    var chunks = [];
    var movedUri;

    if (errorHandled) {
      return;
    }

    if (res.statusCode < 200 || res.statusCode > 399) {
      return callback(res.statusCode, null);
    } else if (res.statusCode > 299) {
      movedUri = url.resolve(uri, res.headers.location);
      return loadRemoteResource(movedUri, inlineRequest, inlineTimeout, callback);
    }

    res.on('data', function (chunk) {
      chunks.push(chunk.toString());
    });
    res.on('end', function () {
      var body = chunks.join('');
      callback(null, body);
    });
  })
  .on('error', function (res) {
    if (errorHandled) {
      return;
    }

    errorHandled = true;
    callback(res.message, null);
  })
  .on('timeout', function () {
    if (errorHandled) {
      return;
    }

    errorHandled = true;
    callback('timeout', null);
  })
  .setTimeout(inlineTimeout);
}

module.exports = loadRemoteResource;

},{"../utils/is-http-resource":90,"../utils/is-https-resource":91,"../utils/override":95,"http":155,"https":104,"url":162}],75:[function(require,module,exports){
var DATA_URI_PATTERN = /^data:(\S*?)?(;charset=[^;]+)?(;[^,]+?)?,(.+)/;

function matchDataUri(uri) {
  return DATA_URI_PATTERN.exec(uri);
}

module.exports = matchDataUri;

},{}],76:[function(require,module,exports){
var UNIX_SEPARATOR = '/';
var WINDOWS_SEPARATOR_PATTERN = /\\/g;

function normalizePath(path) {
  return path.replace(WINDOWS_SEPARATOR_PATTERN, UNIX_SEPARATOR);
}

module.exports = normalizePath;

},{}],77:[function(require,module,exports){
(function (Buffer,process){
var fs = require('fs');
var path = require('path');

var applySourceMaps = require('./apply-source-maps');
var extractImportUrlAndMedia = require('./extract-import-url-and-media');
var isAllowedResource = require('./is-allowed-resource');
var loadOriginalSources = require('./load-original-sources');
var normalizePath = require('./normalize-path');
var rebase = require('./rebase');
var rebaseLocalMap = require('./rebase-local-map');
var rebaseRemoteMap = require('./rebase-remote-map');
var restoreImport = require('./restore-import');

var tokenize = require('../tokenizer/tokenize');
var Token = require('../tokenizer/token');
var Marker = require('../tokenizer/marker');
var hasProtocol = require('../utils/has-protocol');
var isImport = require('../utils/is-import');
var isRemoteResource = require('../utils/is-remote-resource');

var UNKNOWN_URI = 'uri:unknown';

function readSources(input, context, callback) {
  return doReadSources(input, context, function (tokens) {
    return applySourceMaps(tokens, context, function () {
      return loadOriginalSources(context, function () { return callback(tokens); });
    });
  });
}

function doReadSources(input, context, callback) {
  if (typeof input == 'string') {
    return fromString(input, context, callback);
  } else if (Buffer.isBuffer(input)) {
    return fromString(input.toString(), context, callback);
  } else if (Array.isArray(input)) {
    return fromArray(input, context, callback);
  } else if (typeof input == 'object') {
    return fromHash(input, context, callback);
  }
}

function fromString(input, context, callback) {
  context.source = undefined;
  context.sourcesContent[undefined] = input;
  context.stats.originalSize += input.length;

  return fromStyles(input, context, { inline: context.options.inline }, callback);
}

function fromArray(input, context, callback) {
  var inputAsImports = input.reduce(function (accumulator, uriOrHash) {
    if (typeof uriOrHash === 'string') {
      return addStringSource(uriOrHash, accumulator);
    } else {
      return addHashSource(uriOrHash, context, accumulator);
    }

  }, []);

  return fromStyles(inputAsImports.join(''), context, { inline: ['all'] }, callback);
}

function fromHash(input, context, callback) {
  var inputAsImports = addHashSource(input, context, []);
  return fromStyles(inputAsImports.join(''), context, { inline: ['all'] }, callback);
}

function addStringSource(input, imports) {
  imports.push(restoreAsImport(normalizeUri(input)));
  return imports;
}

function addHashSource(input, context, imports) {
  var uri;
  var normalizedUri;
  var source;

  for (uri in input) {
    source = input[uri];
    normalizedUri = normalizeUri(uri);

    imports.push(restoreAsImport(normalizedUri));

    context.sourcesContent[normalizedUri] = source.styles;

    if (source.sourceMap) {
      trackSourceMap(source.sourceMap, normalizedUri, context);
    }
  }

  return imports;
}

function normalizeUri(uri) {
  var currentPath = path.resolve('');
  var absoluteUri;
  var relativeToCurrentPath;
  var normalizedUri;

  if (isRemoteResource(uri)) {
    return uri;
  }

  absoluteUri = path.isAbsolute(uri) ?
    uri :
    path.resolve(uri);
  relativeToCurrentPath = path.relative(currentPath, absoluteUri);
  normalizedUri = normalizePath(relativeToCurrentPath);

  return normalizedUri;
}

function trackSourceMap(sourceMap, uri, context) {
  var parsedMap = typeof sourceMap == 'string' ?
      JSON.parse(sourceMap) :
      sourceMap;
  var rebasedMap = isRemoteResource(uri) ?
    rebaseRemoteMap(parsedMap, uri) :
    rebaseLocalMap(parsedMap, uri || UNKNOWN_URI, context.options.rebaseTo);

  context.inputSourceMapTracker.track(uri, rebasedMap);
}

function restoreAsImport(uri) {
  return restoreImport('url(' + uri + ')', '') + Marker.SEMICOLON;
}

function fromStyles(styles, context, parentInlinerContext, callback) {
  var tokens;
  var rebaseConfig = {};

  if (!context.source) {
    rebaseConfig.fromBase = path.resolve('');
    rebaseConfig.toBase = context.options.rebaseTo;
  } else if (isRemoteResource(context.source)) {
    rebaseConfig.fromBase = context.source;
    rebaseConfig.toBase = context.source;
  } else if (path.isAbsolute(context.source)) {
    rebaseConfig.fromBase = path.dirname(context.source);
    rebaseConfig.toBase = context.options.rebaseTo;
  } else {
    rebaseConfig.fromBase = path.dirname(path.resolve(context.source));
    rebaseConfig.toBase = context.options.rebaseTo;
  }

  tokens = tokenize(styles, context);
  tokens = rebase(tokens, context.options.rebase, context.validator, rebaseConfig);

  return allowsAnyImports(parentInlinerContext.inline) ?
    inline(tokens, context, parentInlinerContext, callback) :
    callback(tokens);
}

function allowsAnyImports(inline) {
  return !(inline.length == 1 && inline[0] == 'none');
}

function inline(tokens, externalContext, parentInlinerContext, callback) {
  var inlinerContext = {
    afterContent: false,
    callback: callback,
    errors: externalContext.errors,
    externalContext: externalContext,
    fetch: externalContext.options.fetch,
    inlinedStylesheets: parentInlinerContext.inlinedStylesheets || externalContext.inlinedStylesheets,
    inline: parentInlinerContext.inline,
    inlineRequest: externalContext.options.inlineRequest,
    inlineTimeout: externalContext.options.inlineTimeout,
    isRemote: parentInlinerContext.isRemote || false,
    localOnly: externalContext.localOnly,
    outputTokens: [],
    rebaseTo: externalContext.options.rebaseTo,
    sourceTokens: tokens,
    warnings: externalContext.warnings
  };

  return doInlineImports(inlinerContext);
}

function doInlineImports(inlinerContext) {
  var token;
  var i, l;

  for (i = 0, l = inlinerContext.sourceTokens.length; i < l; i++) {
    token = inlinerContext.sourceTokens[i];

    if (token[0] == Token.AT_RULE && isImport(token[1])) {
      inlinerContext.sourceTokens.splice(0, i);
      return inlineStylesheet(token, inlinerContext);
    } else if (token[0] == Token.AT_RULE || token[0] == Token.COMMENT) {
      inlinerContext.outputTokens.push(token);
    } else {
      inlinerContext.outputTokens.push(token);
      inlinerContext.afterContent = true;
    }
  }

  inlinerContext.sourceTokens = [];
  return inlinerContext.callback(inlinerContext.outputTokens);
}

function inlineStylesheet(token, inlinerContext) {
  var uriAndMediaQuery = extractImportUrlAndMedia(token[1]);
  var uri = uriAndMediaQuery[0];
  var mediaQuery = uriAndMediaQuery[1];
  var metadata = token[2];

  return isRemoteResource(uri) ?
    inlineRemoteStylesheet(uri, mediaQuery, metadata, inlinerContext) :
    inlineLocalStylesheet(uri, mediaQuery, metadata, inlinerContext);
}

function inlineRemoteStylesheet(uri, mediaQuery, metadata, inlinerContext) {
  var isAllowed = isAllowedResource(uri, true, inlinerContext.inline);
  var originalUri = uri;
  var isLoaded = uri in inlinerContext.externalContext.sourcesContent;
  var isRuntimeResource = !hasProtocol(uri);

  if (inlinerContext.inlinedStylesheets.indexOf(uri) > -1) {
    inlinerContext.warnings.push('Ignoring remote @import of "' + uri + '" as it has already been imported.');
    inlinerContext.sourceTokens = inlinerContext.sourceTokens.slice(1);
    return doInlineImports(inlinerContext);
  } else if (inlinerContext.localOnly && inlinerContext.afterContent) {
    inlinerContext.warnings.push('Ignoring remote @import of "' + uri + '" as no callback given and after other content.');
    inlinerContext.sourceTokens = inlinerContext.sourceTokens.slice(1);
    return doInlineImports(inlinerContext);
  } else if (isRuntimeResource) {
    inlinerContext.warnings.push('Skipping remote @import of "' + uri + '" as no protocol given.');
    inlinerContext.outputTokens = inlinerContext.outputTokens.concat(inlinerContext.sourceTokens.slice(0, 1));
    inlinerContext.sourceTokens = inlinerContext.sourceTokens.slice(1);
    return doInlineImports(inlinerContext);
  } else if (inlinerContext.localOnly && !isLoaded) {
    inlinerContext.warnings.push('Skipping remote @import of "' + uri + '" as no callback given.');
    inlinerContext.outputTokens = inlinerContext.outputTokens.concat(inlinerContext.sourceTokens.slice(0, 1));
    inlinerContext.sourceTokens = inlinerContext.sourceTokens.slice(1);
    return doInlineImports(inlinerContext);
  } else if (!isAllowed && inlinerContext.afterContent) {
    inlinerContext.warnings.push('Ignoring remote @import of "' + uri + '" as resource is not allowed and after other content.');
    inlinerContext.sourceTokens = inlinerContext.sourceTokens.slice(1);
    return doInlineImports(inlinerContext);
  } else if (!isAllowed) {
    inlinerContext.warnings.push('Skipping remote @import of "' + uri + '" as resource is not allowed.');
    inlinerContext.outputTokens = inlinerContext.outputTokens.concat(inlinerContext.sourceTokens.slice(0, 1));
    inlinerContext.sourceTokens = inlinerContext.sourceTokens.slice(1);
    return doInlineImports(inlinerContext);
  }

  inlinerContext.inlinedStylesheets.push(uri);

  function whenLoaded(error, importedStyles) {
    if (error) {
      inlinerContext.errors.push('Broken @import declaration of "' + uri + '" - ' + error);

      return process.nextTick(function () {
        inlinerContext.outputTokens = inlinerContext.outputTokens.concat(inlinerContext.sourceTokens.slice(0, 1));
        inlinerContext.sourceTokens = inlinerContext.sourceTokens.slice(1);
        doInlineImports(inlinerContext);
      });
    }

    inlinerContext.inline = inlinerContext.externalContext.options.inline;
    inlinerContext.isRemote = true;

    inlinerContext.externalContext.source = originalUri;
    inlinerContext.externalContext.sourcesContent[uri] = importedStyles;
    inlinerContext.externalContext.stats.originalSize += importedStyles.length;

    return fromStyles(importedStyles, inlinerContext.externalContext, inlinerContext, function (importedTokens) {
      importedTokens = wrapInMedia(importedTokens, mediaQuery, metadata);

      inlinerContext.outputTokens = inlinerContext.outputTokens.concat(importedTokens);
      inlinerContext.sourceTokens = inlinerContext.sourceTokens.slice(1);

      return doInlineImports(inlinerContext);
    });
  }

  return isLoaded ?
    whenLoaded(null, inlinerContext.externalContext.sourcesContent[uri]) :
    inlinerContext.fetch(uri, inlinerContext.inlineRequest, inlinerContext.inlineTimeout, whenLoaded);
}

function inlineLocalStylesheet(uri, mediaQuery, metadata, inlinerContext) {
  var currentPath = path.resolve('');
  var absoluteUri = path.isAbsolute(uri) ?
    path.resolve(currentPath, uri[0] == '/' ? uri.substring(1) : uri) :
    path.resolve(inlinerContext.rebaseTo, uri);
  var relativeToCurrentPath = path.relative(currentPath, absoluteUri);
  var importedStyles;
  var isAllowed = isAllowedResource(uri, false, inlinerContext.inline);
  var normalizedPath = normalizePath(relativeToCurrentPath);
  var isLoaded = normalizedPath in inlinerContext.externalContext.sourcesContent;

  if (inlinerContext.inlinedStylesheets.indexOf(absoluteUri) > -1) {
    inlinerContext.warnings.push('Ignoring local @import of "' + uri + '" as it has already been imported.');
  } else if (!isLoaded && (!fs.existsSync(absoluteUri) || !fs.statSync(absoluteUri).isFile())) {
    inlinerContext.errors.push('Ignoring local @import of "' + uri + '" as resource is missing.');
  } else if (!isAllowed && inlinerContext.afterContent) {
    inlinerContext.warnings.push('Ignoring local @import of "' + uri + '" as resource is not allowed and after other content.');
  } else if (inlinerContext.afterContent) {
    inlinerContext.warnings.push('Ignoring local @import of "' + uri + '" as after other content.');
  } else if (!isAllowed) {
    inlinerContext.warnings.push('Skipping local @import of "' + uri + '" as resource is not allowed.');
    inlinerContext.outputTokens = inlinerContext.outputTokens.concat(inlinerContext.sourceTokens.slice(0, 1));
  } else {
    importedStyles = isLoaded ?
      inlinerContext.externalContext.sourcesContent[normalizedPath] :
      fs.readFileSync(absoluteUri, 'utf-8');

    inlinerContext.inlinedStylesheets.push(absoluteUri);
    inlinerContext.inline = inlinerContext.externalContext.options.inline;

    inlinerContext.externalContext.source = normalizedPath;
    inlinerContext.externalContext.sourcesContent[normalizedPath] = importedStyles;
    inlinerContext.externalContext.stats.originalSize += importedStyles.length;

    return fromStyles(importedStyles, inlinerContext.externalContext, inlinerContext, function (importedTokens) {
      importedTokens = wrapInMedia(importedTokens, mediaQuery, metadata);

      inlinerContext.outputTokens = inlinerContext.outputTokens.concat(importedTokens);
      inlinerContext.sourceTokens = inlinerContext.sourceTokens.slice(1);

      return doInlineImports(inlinerContext);
    });
  }

  inlinerContext.sourceTokens = inlinerContext.sourceTokens.slice(1);

  return doInlineImports(inlinerContext);
}

function wrapInMedia(tokens, mediaQuery, metadata) {
  if (mediaQuery) {
    return [[Token.NESTED_BLOCK, [[Token.NESTED_BLOCK_SCOPE, '@media ' + mediaQuery, metadata]], tokens]];
  } else {
    return tokens;
  }
}

module.exports = readSources;

}).call(this,{"isBuffer":require("../../../is-buffer/index.js")},require('_process'))
},{"../../../is-buffer/index.js":107,"../tokenizer/marker":83,"../tokenizer/token":84,"../tokenizer/tokenize":85,"../utils/has-protocol":88,"../utils/is-import":92,"../utils/is-remote-resource":93,"./apply-source-maps":69,"./extract-import-url-and-media":70,"./is-allowed-resource":72,"./load-original-sources":73,"./normalize-path":76,"./rebase":80,"./rebase-local-map":78,"./rebase-remote-map":79,"./restore-import":81,"_process":112,"fs":3,"path":110}],78:[function(require,module,exports){
var path = require('path');

function rebaseLocalMap(sourceMap, sourceUri, rebaseTo) {
  var currentPath = path.resolve('');
  var absoluteUri = path.resolve(currentPath, sourceUri);
  var absoluteUriDirectory = path.dirname(absoluteUri);

  sourceMap.sources = sourceMap.sources.map(function(source) {
    return path.relative(rebaseTo, path.resolve(absoluteUriDirectory, source));
  });

  return sourceMap;
}

module.exports = rebaseLocalMap;

},{"path":110}],79:[function(require,module,exports){
var path = require('path');
var url = require('url');

function rebaseRemoteMap(sourceMap, sourceUri) {
  var sourceDirectory = path.dirname(sourceUri);

  sourceMap.sources = sourceMap.sources.map(function(source) {
    return url.resolve(sourceDirectory, source);
  });

  return sourceMap;
}

module.exports = rebaseRemoteMap;

},{"path":110,"url":162}],80:[function(require,module,exports){
var extractImportUrlAndMedia = require('./extract-import-url-and-media');
var restoreImport = require('./restore-import');
var rewriteUrl = require('./rewrite-url');

var Token = require('../tokenizer/token');
var isImport = require('../utils/is-import');

var SOURCE_MAP_COMMENT_PATTERN = /^\/\*# sourceMappingURL=(\S+) \*\/$/;

function rebase(tokens, rebaseAll, validator, rebaseConfig) {
  return rebaseAll ?
    rebaseEverything(tokens, validator, rebaseConfig) :
    rebaseAtRules(tokens, validator, rebaseConfig);
}

function rebaseEverything(tokens, validator, rebaseConfig) {
  var token;
  var i, l;

  for (i = 0, l = tokens.length; i < l; i++) {
    token = tokens[i];

    switch (token[0]) {
      case Token.AT_RULE:
        rebaseAtRule(token, validator, rebaseConfig);
        break;
      case Token.AT_RULE_BLOCK:
        rebaseProperties(token[2], validator, rebaseConfig);
        break;
      case Token.COMMENT:
        rebaseSourceMapComment(token, rebaseConfig);
        break;
      case Token.NESTED_BLOCK:
        rebaseEverything(token[2], validator, rebaseConfig);
        break;
      case Token.RULE:
        rebaseProperties(token[2], validator, rebaseConfig);
        break;
    }
  }

  return tokens;
}

function rebaseAtRules(tokens, validator, rebaseConfig) {
  var token;
  var i, l;

  for (i = 0, l = tokens.length; i < l; i++) {
    token = tokens[i];

    switch (token[0]) {
      case Token.AT_RULE:
        rebaseAtRule(token, validator, rebaseConfig);
        break;
    }
  }

  return tokens;
}

function rebaseAtRule(token, validator, rebaseConfig) {
  if (!isImport(token[1])) {
    return;
  }

  var uriAndMediaQuery = extractImportUrlAndMedia(token[1]);
  var newUrl = rewriteUrl(uriAndMediaQuery[0], rebaseConfig);
  var mediaQuery = uriAndMediaQuery[1];

  token[1] = restoreImport(newUrl, mediaQuery);
}

function rebaseSourceMapComment(token, rebaseConfig) {
  var matches = SOURCE_MAP_COMMENT_PATTERN.exec(token[1]);

  if (matches && matches[1].indexOf('data:') === -1) {
    token[1] = token[1].replace(matches[1], rewriteUrl(matches[1], rebaseConfig, true));
  }
}

function rebaseProperties(properties, validator, rebaseConfig) {
  var property;
  var value;
  var i, l;
  var j, m;

  for (i = 0, l = properties.length; i < l; i++) {
    property = properties[i];

    for (j = 2 /* 0 is Token.PROPERTY, 1 is name */, m = property.length; j < m; j++) {
      value = property[j][1];

      if (validator.isUrl(value)) {
        property[j][1] = rewriteUrl(value, rebaseConfig);
      }
    }
  }
}

module.exports = rebase;

},{"../tokenizer/token":84,"../utils/is-import":92,"./extract-import-url-and-media":70,"./restore-import":81,"./rewrite-url":82}],81:[function(require,module,exports){
function restoreImport(uri, mediaQuery) {
  return ('@import ' + uri + ' ' + mediaQuery).trim();
}

module.exports = restoreImport;

},{}],82:[function(require,module,exports){
(function (process){
var path = require('path');
var url = require('url');

var DOUBLE_QUOTE = '"';
var SINGLE_QUOTE = '\'';
var URL_PREFIX = 'url(';
var URL_SUFFIX = ')';

var QUOTE_PREFIX_PATTERN = /^["']/;
var QUOTE_SUFFIX_PATTERN = /["']$/;
var ROUND_BRACKETS_PATTERN = /[\(\)]/;
var URL_PREFIX_PATTERN = /^url\(/i;
var URL_SUFFIX_PATTERN = /\)$/;
var WHITESPACE_PATTERN = /\s/;

var isWindows = process.platform == 'win32';

function rebase(uri, rebaseConfig) {
  if (!rebaseConfig) {
    return uri;
  }

  if (isAbsolute(uri) && !isRemote(rebaseConfig.toBase)) {
    return uri;
  }

  if (isRemote(uri) || isSVGMarker(uri) || isInternal(uri)) {
    return uri;
  }

  if (isData(uri)) {
    return '\'' + uri + '\'';
  }

  if (isRemote(rebaseConfig.toBase)) {
    return url.resolve(rebaseConfig.toBase, uri);
  }

  return rebaseConfig.absolute ?
    normalize(absolute(uri, rebaseConfig)) :
    normalize(relative(uri, rebaseConfig));
}

function isAbsolute(uri) {
  return path.isAbsolute(uri);
}

function isSVGMarker(uri) {
  return uri[0] == '#';
}

function isInternal(uri) {
  return /^\w+:\w+/.test(uri);
}

function isRemote(uri) {
  return /^[^:]+?:\/\//.test(uri) || uri.indexOf('//') === 0;
}

function isData(uri) {
  return uri.indexOf('data:') === 0;
}

function absolute(uri, rebaseConfig) {
  return path
    .resolve(path.join(rebaseConfig.fromBase || '', uri))
    .replace(rebaseConfig.toBase, '');
}

function relative(uri, rebaseConfig) {
  return path.relative(rebaseConfig.toBase, path.join(rebaseConfig.fromBase || '', uri));
}

function normalize(uri) {
  return isWindows ? uri.replace(/\\/g, '/') : uri;
}

function quoteFor(unquotedUrl) {
  if (unquotedUrl.indexOf(SINGLE_QUOTE) > -1) {
    return DOUBLE_QUOTE;
  } else if (unquotedUrl.indexOf(DOUBLE_QUOTE) > -1) {
    return SINGLE_QUOTE;
  } else if (hasWhitespace(unquotedUrl) || hasRoundBrackets(unquotedUrl)) {
    return SINGLE_QUOTE;
  } else {
    return '';
  }
}

function hasWhitespace(url) {
  return WHITESPACE_PATTERN.test(url);
}

function hasRoundBrackets(url) {
  return ROUND_BRACKETS_PATTERN.test(url);
}

function rewriteUrl(originalUrl, rebaseConfig, pathOnly) {
  var strippedUrl = originalUrl
    .replace(URL_PREFIX_PATTERN, '')
    .replace(URL_SUFFIX_PATTERN, '')
    .trim();

  var unquotedUrl = strippedUrl
    .replace(QUOTE_PREFIX_PATTERN, '')
    .replace(QUOTE_SUFFIX_PATTERN, '')
    .trim();

  var quote = strippedUrl[0] == SINGLE_QUOTE || strippedUrl[0] == DOUBLE_QUOTE ?
    strippedUrl[0] :
    quoteFor(unquotedUrl);

  return pathOnly ?
    rebase(unquotedUrl, rebaseConfig) :
    URL_PREFIX + quote + rebase(unquotedUrl, rebaseConfig) + quote + URL_SUFFIX;
}

module.exports = rewriteUrl;

}).call(this,require('_process'))
},{"_process":112,"path":110,"url":162}],83:[function(require,module,exports){
var Marker = {
  ASTERISK: '*',
  AT: '@',
  BACK_SLASH: '\\',
  CARRIAGE_RETURN: '\r',
  CLOSE_CURLY_BRACKET: '}',
  CLOSE_ROUND_BRACKET: ')',
  CLOSE_SQUARE_BRACKET: ']',
  COLON: ':',
  COMMA: ',',
  DOUBLE_QUOTE: '"',
  EXCLAMATION: '!',
  FORWARD_SLASH: '/',
  INTERNAL: '-clean-css-',
  NEW_LINE_NIX: '\n',
  OPEN_CURLY_BRACKET: '{',
  OPEN_ROUND_BRACKET: '(',
  OPEN_SQUARE_BRACKET: '[',
  SEMICOLON: ';',
  SINGLE_QUOTE: '\'',
  SPACE: ' ',
  TAB: '\t',
  UNDERSCORE: '_'
};

module.exports = Marker;

},{}],84:[function(require,module,exports){
var Token = {
  AT_RULE: 'at-rule', // e.g. `@import`, `@charset`
  AT_RULE_BLOCK: 'at-rule-block', // e.g. `@font-face{...}`
  AT_RULE_BLOCK_SCOPE: 'at-rule-block-scope', // e.g. `@font-face`
  COMMENT: 'comment', // e.g. `/* comment */`
  NESTED_BLOCK: 'nested-block', // e.g. `@media screen{...}`, `@keyframes animation {...}`
  NESTED_BLOCK_SCOPE: 'nested-block-scope', // e.g. `@media`, `@keyframes`
  PROPERTY: 'property', // e.g. `color:red`
  PROPERTY_BLOCK: 'property-block', // e.g. `--var:{color:red}`
  PROPERTY_NAME: 'property-name', // e.g. `color`
  PROPERTY_VALUE: 'property-value', // e.g. `red`
  RAW: 'raw', // e.g. anything between /* clean-css ignore:start */ and /* clean-css ignore:end */ comments
  RULE: 'rule', // e.g `div > a{...}`
  RULE_SCOPE: 'rule-scope' // e.g `div > a`
};

module.exports = Token;

},{}],85:[function(require,module,exports){
var Marker = require('./marker');
var Token = require('./token');

var formatPosition = require('../utils/format-position');

var Level = {
  BLOCK: 'block',
  COMMENT: 'comment',
  DOUBLE_QUOTE: 'double-quote',
  RULE: 'rule',
  SINGLE_QUOTE: 'single-quote'
};

var AT_RULES = [
  '@charset',
  '@import'
];

var BLOCK_RULES = [
  '@-moz-document',
  '@document',
  '@-moz-keyframes',
  '@-ms-keyframes',
  '@-o-keyframes',
  '@-webkit-keyframes',
  '@keyframes',
  '@media',
  '@supports'
];

var IGNORE_END_COMMENT_PATTERN = /\/\* clean\-css ignore:end \*\/$/;
var IGNORE_START_COMMENT_PATTERN = /^\/\* clean\-css ignore:start \*\//;

var PAGE_MARGIN_BOXES = [
  '@bottom-center',
  '@bottom-left',
  '@bottom-left-corner',
  '@bottom-right',
  '@bottom-right-corner',
  '@left-bottom',
  '@left-middle',
  '@left-top',
  '@right-bottom',
  '@right-middle',
  '@right-top',
  '@top-center',
  '@top-left',
  '@top-left-corner',
  '@top-right',
  '@top-right-corner'
];

var EXTRA_PAGE_BOXES = [
  '@footnote',
  '@footnotes',
  '@left',
  '@page-float-bottom',
  '@page-float-top',
  '@right'
];

var REPEAT_PATTERN = /^\[\s{0,31}\d+\s{0,31}\]$/;
var RULE_WORD_SEPARATOR_PATTERN = /[\s\(]/;
var TAIL_BROKEN_VALUE_PATTERN = /[\s|\}]*$/;

function tokenize(source, externalContext) {
  var internalContext = {
    level: Level.BLOCK,
    position: {
      source: externalContext.source || undefined,
      line: 1,
      column: 0,
      index: 0
    }
  };

  return intoTokens(source, externalContext, internalContext, false);
}

function intoTokens(source, externalContext, internalContext, isNested) {
  var allTokens = [];
  var newTokens = allTokens;
  var lastToken;
  var ruleToken;
  var ruleTokens = [];
  var propertyToken;
  var metadata;
  var metadatas = [];
  var level = internalContext.level;
  var levels = [];
  var buffer = [];
  var buffers = [];
  var serializedBuffer;
  var serializedBufferPart;
  var roundBracketLevel = 0;
  var isQuoted;
  var isSpace;
  var isNewLineNix;
  var isNewLineWin;
  var isCarriageReturn;
  var isCommentStart;
  var wasCommentStart = false;
  var isCommentEnd;
  var wasCommentEnd = false;
  var isCommentEndMarker;
  var isEscaped;
  var wasEscaped = false;
  var isRaw = false;
  var seekingValue = false;
  var seekingPropertyBlockClosing = false;
  var position = internalContext.position;
  var lastCommentStartAt;

  for (; position.index < source.length; position.index++) {
    var character = source[position.index];

    isQuoted = level == Level.SINGLE_QUOTE || level == Level.DOUBLE_QUOTE;
    isSpace = character == Marker.SPACE || character == Marker.TAB;
    isNewLineNix = character == Marker.NEW_LINE_NIX;
    isNewLineWin = character == Marker.NEW_LINE_NIX && source[position.index - 1] == Marker.CARRIAGE_RETURN;
    isCarriageReturn = character == Marker.CARRIAGE_RETURN && source[position.index + 1] && source[position.index + 1] != Marker.NEW_LINE_NIX;
    isCommentStart = !wasCommentEnd && level != Level.COMMENT && !isQuoted && character == Marker.ASTERISK && source[position.index - 1] == Marker.FORWARD_SLASH;
    isCommentEndMarker = !wasCommentStart && !isQuoted && character == Marker.FORWARD_SLASH && source[position.index - 1] == Marker.ASTERISK;
    isCommentEnd = level == Level.COMMENT && isCommentEndMarker;
    roundBracketLevel = Math.max(roundBracketLevel, 0);

    metadata = buffer.length === 0 ?
      [position.line, position.column, position.source] :
      metadata;

    if (isEscaped) {
      // previous character was a backslash
      buffer.push(character);
    } else if (!isCommentEnd && level == Level.COMMENT) {
      buffer.push(character);
    } else if (!isCommentStart && !isCommentEnd && isRaw) {
      buffer.push(character);
    } else if (isCommentStart && (level == Level.BLOCK || level == Level.RULE) && buffer.length > 1) {
      // comment start within block preceded by some content, e.g. div/*<--
      metadatas.push(metadata);
      buffer.push(character);
      buffers.push(buffer.slice(0, buffer.length - 2));

      buffer = buffer.slice(buffer.length - 2);
      metadata = [position.line, position.column - 1, position.source];

      levels.push(level);
      level = Level.COMMENT;
    } else if (isCommentStart) {
      // comment start, e.g. /*<--
      levels.push(level);
      level = Level.COMMENT;
      buffer.push(character);
    } else if (isCommentEnd && isIgnoreStartComment(buffer)) {
      // ignore:start comment end, e.g. /* clean-css ignore:start */<--
      serializedBuffer = buffer.join('').trim() + character;
      lastToken = [Token.COMMENT, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]];
      newTokens.push(lastToken);

      isRaw = true;
      metadata = metadatas.pop() || null;
      buffer = buffers.pop() || [];
    } else if (isCommentEnd && isIgnoreEndComment(buffer)) {
      // ignore:start comment end, e.g. /* clean-css ignore:end */<--
      serializedBuffer = buffer.join('') + character;
      lastCommentStartAt = serializedBuffer.lastIndexOf(Marker.FORWARD_SLASH + Marker.ASTERISK);

      serializedBufferPart = serializedBuffer.substring(0, lastCommentStartAt);
      lastToken = [Token.RAW, serializedBufferPart, [originalMetadata(metadata, serializedBufferPart, externalContext)]];
      newTokens.push(lastToken);

      serializedBufferPart = serializedBuffer.substring(lastCommentStartAt);
      metadata = [position.line, position.column - serializedBufferPart.length + 1, position.source];
      lastToken = [Token.COMMENT, serializedBufferPart, [originalMetadata(metadata, serializedBufferPart, externalContext)]];
      newTokens.push(lastToken);

      isRaw = false;
      level = levels.pop();
      metadata = metadatas.pop() || null;
      buffer = buffers.pop() || [];
    } else if (isCommentEnd) {
      // comment end, e.g. /* comment */<--
      serializedBuffer = buffer.join('').trim() + character;
      lastToken = [Token.COMMENT, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]];
      newTokens.push(lastToken);

      level = levels.pop();
      metadata = metadatas.pop() || null;
      buffer = buffers.pop() || [];
    } else if (isCommentEndMarker && source[position.index + 1] != Marker.ASTERISK) {
      externalContext.warnings.push('Unexpected \'*/\' at ' + formatPosition([position.line, position.column, position.source]) + '.');
      buffer = [];
    } else if (character == Marker.SINGLE_QUOTE && !isQuoted) {
      // single quotation start, e.g. a[href^='https<--
      levels.push(level);
      level = Level.SINGLE_QUOTE;
      buffer.push(character);
    } else if (character == Marker.SINGLE_QUOTE && level == Level.SINGLE_QUOTE) {
      // single quotation end, e.g. a[href^='https'<--
      level = levels.pop();
      buffer.push(character);
    } else if (character == Marker.DOUBLE_QUOTE && !isQuoted) {
      // double quotation start, e.g. a[href^="<--
      levels.push(level);
      level = Level.DOUBLE_QUOTE;
      buffer.push(character);
    } else if (character == Marker.DOUBLE_QUOTE && level == Level.DOUBLE_QUOTE) {
      // double quotation end, e.g. a[href^="https"<--
      level = levels.pop();
      buffer.push(character);
    } else if (!isCommentStart && !isCommentEnd && character != Marker.CLOSE_ROUND_BRACKET && character != Marker.OPEN_ROUND_BRACKET && level != Level.COMMENT && !isQuoted && roundBracketLevel > 0) {
      // character inside any function, e.g. hsla(.<--
      buffer.push(character);
    } else if (character == Marker.OPEN_ROUND_BRACKET && !isQuoted && level != Level.COMMENT && !seekingValue) {
      // round open bracket, e.g. @import url(<--
      buffer.push(character);

      roundBracketLevel++;
    } else if (character == Marker.CLOSE_ROUND_BRACKET && !isQuoted && level != Level.COMMENT && !seekingValue) {
      // round open bracket, e.g. @import url(test.css)<--
      buffer.push(character);

      roundBracketLevel--;
    } else if (character == Marker.SEMICOLON && level == Level.BLOCK && buffer[0] == Marker.AT) {
      // semicolon ending rule at block level, e.g. @import '...';<--
      serializedBuffer = buffer.join('').trim();
      allTokens.push([Token.AT_RULE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);

      buffer = [];
    } else if (character == Marker.COMMA && level == Level.BLOCK && ruleToken) {
      // comma separator at block level, e.g. a,div,<--
      serializedBuffer = buffer.join('').trim();
      ruleToken[1].push([tokenScopeFrom(ruleToken[0]), serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext, ruleToken[1].length)]]);

      buffer = [];
    } else if (character == Marker.COMMA && level == Level.BLOCK && tokenTypeFrom(buffer) == Token.AT_RULE) {
      // comma separator at block level, e.g. @import url(...) screen,<--
      // keep iterating as end semicolon will create the token
      buffer.push(character);
    } else if (character == Marker.COMMA && level == Level.BLOCK) {
      // comma separator at block level, e.g. a,<--
      ruleToken = [tokenTypeFrom(buffer), [], []];
      serializedBuffer = buffer.join('').trim();
      ruleToken[1].push([tokenScopeFrom(ruleToken[0]), serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext, 0)]]);

      buffer = [];
    } else if (character == Marker.OPEN_CURLY_BRACKET && level == Level.BLOCK && ruleToken && ruleToken[0] == Token.NESTED_BLOCK) {
      // open brace opening at-rule at block level, e.g. @media{<--
      serializedBuffer = buffer.join('').trim();
      ruleToken[1].push([Token.NESTED_BLOCK_SCOPE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
      allTokens.push(ruleToken);

      levels.push(level);
      position.column++;
      position.index++;
      buffer = [];

      ruleToken[2] = intoTokens(source, externalContext, internalContext, true);
      ruleToken = null;
    } else if (character == Marker.OPEN_CURLY_BRACKET && level == Level.BLOCK && tokenTypeFrom(buffer) == Token.NESTED_BLOCK) {
      // open brace opening at-rule at block level, e.g. @media{<--
      serializedBuffer = buffer.join('').trim();
      ruleToken = ruleToken || [Token.NESTED_BLOCK, [], []];
      ruleToken[1].push([Token.NESTED_BLOCK_SCOPE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
      allTokens.push(ruleToken);

      levels.push(level);
      position.column++;
      position.index++;
      buffer = [];

      ruleToken[2] = intoTokens(source, externalContext, internalContext, true);
      ruleToken = null;
    } else if (character == Marker.OPEN_CURLY_BRACKET && level == Level.BLOCK) {
      // open brace opening rule at block level, e.g. div{<--
      serializedBuffer = buffer.join('').trim();
      ruleToken = ruleToken || [tokenTypeFrom(buffer), [], []];
      ruleToken[1].push([tokenScopeFrom(ruleToken[0]), serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext, ruleToken[1].length)]]);
      newTokens = ruleToken[2];
      allTokens.push(ruleToken);

      levels.push(level);
      level = Level.RULE;
      buffer = [];
    } else if (character == Marker.OPEN_CURLY_BRACKET && level == Level.RULE && seekingValue) {
      // open brace opening rule at rule level, e.g. div{--variable:{<--
      ruleTokens.push(ruleToken);
      ruleToken = [Token.PROPERTY_BLOCK, []];
      propertyToken.push(ruleToken);
      newTokens = ruleToken[1];

      levels.push(level);
      level = Level.RULE;
      seekingValue = false;
    } else if (character == Marker.OPEN_CURLY_BRACKET && level == Level.RULE && isPageMarginBox(buffer)) {
      // open brace opening page-margin box at rule level, e.g. @page{@top-center{<--
      serializedBuffer = buffer.join('').trim();
      ruleTokens.push(ruleToken);
      ruleToken = [Token.AT_RULE_BLOCK, [], []];
      ruleToken[1].push([Token.AT_RULE_BLOCK_SCOPE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
      newTokens.push(ruleToken);
      newTokens = ruleToken[2];

      levels.push(level);
      level = Level.RULE;
      buffer = [];
    } else if (character == Marker.COLON && level == Level.RULE && !seekingValue) {
      // colon at rule level, e.g. a{color:<--
      serializedBuffer = buffer.join('').trim();
      propertyToken = [Token.PROPERTY, [Token.PROPERTY_NAME, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]];
      newTokens.push(propertyToken);

      seekingValue = true;
      buffer = [];
    } else if (character == Marker.SEMICOLON && level == Level.RULE && propertyToken && ruleTokens.length > 0 && buffer.length > 0 && buffer[0] == Marker.AT) {
      // semicolon at rule level for at-rule, e.g. a{--color:{@apply(--other-color);<--
      serializedBuffer = buffer.join('').trim();
      ruleToken[1].push([Token.AT_RULE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);

      buffer = [];
    } else if (character == Marker.SEMICOLON && level == Level.RULE && propertyToken && buffer.length > 0) {
      // semicolon at rule level, e.g. a{color:red;<--
      serializedBuffer = buffer.join('').trim();
      propertyToken.push([Token.PROPERTY_VALUE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);

      propertyToken = null;
      seekingValue = false;
      buffer = [];
    } else if (character == Marker.SEMICOLON && level == Level.RULE && propertyToken && buffer.length === 0) {
      // semicolon after bracketed value at rule level, e.g. a{color:rgb(...);<--
      propertyToken = null;
      seekingValue = false;
    } else if (character == Marker.SEMICOLON && level == Level.RULE && buffer.length > 0 && buffer[0] == Marker.AT) {
      // semicolon for at-rule at rule level, e.g. a{@apply(--variable);<--
      serializedBuffer = buffer.join('');
      newTokens.push([Token.AT_RULE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);

      seekingValue = false;
      buffer = [];
    } else if (character == Marker.SEMICOLON && level == Level.RULE && seekingPropertyBlockClosing) {
      // close brace after a property block at rule level, e.g. a{--custom:{color:red;};<--
      seekingPropertyBlockClosing = false;
      buffer = [];
    } else if (character == Marker.SEMICOLON && level == Level.RULE && buffer.length === 0) {
      // stray semicolon at rule level, e.g. a{;<--
      // noop
    } else if (character == Marker.CLOSE_CURLY_BRACKET && level == Level.RULE && propertyToken && seekingValue && buffer.length > 0 && ruleTokens.length > 0) {
      // close brace at rule level, e.g. a{--color:{color:red}<--
      serializedBuffer = buffer.join('');
      propertyToken.push([Token.PROPERTY_VALUE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
      propertyToken = null;
      ruleToken = ruleTokens.pop();
      newTokens = ruleToken[2];

      level = levels.pop();
      seekingValue = false;
      buffer = [];
    } else if (character == Marker.CLOSE_CURLY_BRACKET && level == Level.RULE && propertyToken && buffer.length > 0 && buffer[0] == Marker.AT && ruleTokens.length > 0) {
      // close brace at rule level for at-rule, e.g. a{--color:{@apply(--other-color)}<--
      serializedBuffer = buffer.join('');
      ruleToken[1].push([Token.AT_RULE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
      propertyToken = null;
      ruleToken = ruleTokens.pop();
      newTokens = ruleToken[2];

      level = levels.pop();
      seekingValue = false;
      buffer = [];
    } else if (character == Marker.CLOSE_CURLY_BRACKET && level == Level.RULE && propertyToken && ruleTokens.length > 0) {
      // close brace at rule level after space, e.g. a{--color:{color:red }<--
      propertyToken = null;
      ruleToken = ruleTokens.pop();
      newTokens = ruleToken[2];

      level = levels.pop();
      seekingValue = false;
    } else if (character == Marker.CLOSE_CURLY_BRACKET && level == Level.RULE && propertyToken && buffer.length > 0) {
      // close brace at rule level, e.g. a{color:red}<--
      serializedBuffer = buffer.join('');
      propertyToken.push([Token.PROPERTY_VALUE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
      propertyToken = null;
      ruleToken = ruleTokens.pop();
      newTokens = allTokens;

      level = levels.pop();
      seekingValue = false;
      buffer = [];
    } else if (character == Marker.CLOSE_CURLY_BRACKET && level == Level.RULE && buffer.length > 0 && buffer[0] == Marker.AT) {
      // close brace after at-rule at rule level, e.g. a{@apply(--variable)}<--
      propertyToken = null;
      ruleToken = null;
      serializedBuffer = buffer.join('').trim();
      newTokens.push([Token.AT_RULE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
      newTokens = allTokens;

      level = levels.pop();
      seekingValue = false;
      buffer = [];
    } else if (character == Marker.CLOSE_CURLY_BRACKET && level == Level.RULE && levels[levels.length - 1] == Level.RULE) {
      // close brace after a property block at rule level, e.g. a{--custom:{color:red;}<--
      propertyToken = null;
      ruleToken = ruleTokens.pop();
      newTokens = ruleToken[2];

      level = levels.pop();
      seekingValue = false;
      seekingPropertyBlockClosing = true;
      buffer = [];
    } else if (character == Marker.CLOSE_CURLY_BRACKET && level == Level.RULE) {
      // close brace after a rule, e.g. a{color:red;}<--
      propertyToken = null;
      ruleToken = null;
      newTokens = allTokens;

      level = levels.pop();
      seekingValue = false;
    } else if (character == Marker.CLOSE_CURLY_BRACKET && level == Level.BLOCK && !isNested && position.index <= source.length - 1) {
      // stray close brace at block level, e.g. a{color:red}color:blue}<--
      externalContext.warnings.push('Unexpected \'}\' at ' + formatPosition([position.line, position.column, position.source]) + '.');
      buffer.push(character);
    } else if (character == Marker.CLOSE_CURLY_BRACKET && level == Level.BLOCK) {
      // close brace at block level, e.g. @media screen {...}<--
      break;
    } else if (character == Marker.OPEN_ROUND_BRACKET && level == Level.RULE && seekingValue) {
      // round open bracket, e.g. a{color:hsla(<--
      buffer.push(character);
      roundBracketLevel++;
    } else if (character == Marker.CLOSE_ROUND_BRACKET && level == Level.RULE && seekingValue && roundBracketLevel == 1) {
      // round close bracket, e.g. a{color:hsla(0,0%,0%)<--
      buffer.push(character);
      serializedBuffer = buffer.join('').trim();
      propertyToken.push([Token.PROPERTY_VALUE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);

      roundBracketLevel--;
      buffer = [];
    } else if (character == Marker.CLOSE_ROUND_BRACKET && level == Level.RULE && seekingValue) {
      // round close bracket within other brackets, e.g. a{width:calc((10rem / 2)<--
      buffer.push(character);
      roundBracketLevel--;
    } else if (character == Marker.FORWARD_SLASH && source[position.index + 1] != Marker.ASTERISK && level == Level.RULE && seekingValue && buffer.length > 0) {
      // forward slash within a property, e.g. a{background:url(image.png) 0 0/<--
      serializedBuffer = buffer.join('').trim();
      propertyToken.push([Token.PROPERTY_VALUE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
      propertyToken.push([Token.PROPERTY_VALUE, character, [[position.line, position.column, position.source]]]);

      buffer = [];
    } else if (character == Marker.FORWARD_SLASH && source[position.index + 1] != Marker.ASTERISK && level == Level.RULE && seekingValue) {
      // forward slash within a property after space, e.g. a{background:url(image.png) 0 0 /<--
      propertyToken.push([Token.PROPERTY_VALUE, character, [[position.line, position.column, position.source]]]);

      buffer = [];
    } else if (character == Marker.COMMA && level == Level.RULE && seekingValue && buffer.length > 0) {
      // comma within a property, e.g. a{background:url(image.png),<--
      serializedBuffer = buffer.join('').trim();
      propertyToken.push([Token.PROPERTY_VALUE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);
      propertyToken.push([Token.PROPERTY_VALUE, character, [[position.line, position.column, position.source]]]);

      buffer = [];
    } else if (character == Marker.COMMA && level == Level.RULE && seekingValue) {
      // comma within a property after space, e.g. a{background:url(image.png) ,<--
      propertyToken.push([Token.PROPERTY_VALUE, character, [[position.line, position.column, position.source]]]);

      buffer = [];
    } else if (character == Marker.CLOSE_SQUARE_BRACKET && propertyToken && propertyToken.length > 1 && buffer.length > 0 && isRepeatToken(buffer)) {
      buffer.push(character);
      serializedBuffer = buffer.join('').trim();
      propertyToken[propertyToken.length - 1][1] += serializedBuffer;

      buffer = [];
    } else if ((isSpace || (isNewLineNix && !isNewLineWin)) && level == Level.RULE && seekingValue && propertyToken && buffer.length > 0) {
      // space or *nix newline within property, e.g. a{margin:0 <--
      serializedBuffer = buffer.join('').trim();
      propertyToken.push([Token.PROPERTY_VALUE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);

      buffer = [];
    } else if (isNewLineWin && level == Level.RULE && seekingValue && propertyToken && buffer.length > 1) {
      // win newline within property, e.g. a{margin:0\r\n<--
      serializedBuffer = buffer.join('').trim();
      propertyToken.push([Token.PROPERTY_VALUE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);

      buffer = [];
    } else if (isNewLineWin && level == Level.RULE && seekingValue) {
      // win newline
      buffer = [];
    } else if (buffer.length == 1 && isNewLineWin) {
      // ignore windows newline which is composed of two characters
      buffer.pop();
    } else if (buffer.length > 0 || !isSpace && !isNewLineNix && !isNewLineWin && !isCarriageReturn) {
      // any character
      buffer.push(character);
    }

    wasEscaped = isEscaped;
    isEscaped = !wasEscaped && character == Marker.BACK_SLASH;
    wasCommentStart = isCommentStart;
    wasCommentEnd = isCommentEnd;

    position.line = (isNewLineWin || isNewLineNix || isCarriageReturn) ? position.line + 1 : position.line;
    position.column = (isNewLineWin || isNewLineNix || isCarriageReturn) ? 0 : position.column + 1;
  }

  if (seekingValue) {
    externalContext.warnings.push('Missing \'}\' at ' + formatPosition([position.line, position.column, position.source]) + '.');
  }

  if (seekingValue && buffer.length > 0) {
    serializedBuffer = buffer.join('').replace(TAIL_BROKEN_VALUE_PATTERN, '');
    propertyToken.push([Token.PROPERTY_VALUE, serializedBuffer, [originalMetadata(metadata, serializedBuffer, externalContext)]]);

    buffer = [];
  }

  if (buffer.length > 0) {
    externalContext.warnings.push('Invalid character(s) \'' + buffer.join('') + '\' at ' + formatPosition(metadata) + '. Ignoring.');
  }

  return allTokens;
}

function isIgnoreStartComment(buffer) {
  return IGNORE_START_COMMENT_PATTERN.test(buffer.join('') + Marker.FORWARD_SLASH);
}

function isIgnoreEndComment(buffer) {
  return IGNORE_END_COMMENT_PATTERN.test(buffer.join('') + Marker.FORWARD_SLASH);
}

function originalMetadata(metadata, value, externalContext, selectorFallbacks) {
  var source = metadata[2];

  return externalContext.inputSourceMapTracker.isTracking(source) ?
    externalContext.inputSourceMapTracker.originalPositionFor(metadata, value.length, selectorFallbacks) :
    metadata;
}

function tokenTypeFrom(buffer) {
  var isAtRule = buffer[0] == Marker.AT || buffer[0] == Marker.UNDERSCORE;
  var ruleWord = buffer.join('').split(RULE_WORD_SEPARATOR_PATTERN)[0];

  if (isAtRule && BLOCK_RULES.indexOf(ruleWord) > -1) {
    return Token.NESTED_BLOCK;
  } else if (isAtRule && AT_RULES.indexOf(ruleWord) > -1) {
    return Token.AT_RULE;
  } else if (isAtRule) {
    return Token.AT_RULE_BLOCK;
  } else {
    return Token.RULE;
  }
}

function tokenScopeFrom(tokenType) {
  if (tokenType == Token.RULE) {
    return Token.RULE_SCOPE;
  } else if (tokenType == Token.NESTED_BLOCK) {
    return Token.NESTED_BLOCK_SCOPE;
  } else if (tokenType == Token.AT_RULE_BLOCK) {
    return Token.AT_RULE_BLOCK_SCOPE;
  }
}

function isPageMarginBox(buffer) {
  var serializedBuffer = buffer.join('').trim();

  return PAGE_MARGIN_BOXES.indexOf(serializedBuffer) > -1 || EXTRA_PAGE_BOXES.indexOf(serializedBuffer) > -1;
}

function isRepeatToken(buffer) {
  return REPEAT_PATTERN.test(buffer.join('') + Marker.CLOSE_SQUARE_BRACKET);
}

module.exports = tokenize;

},{"../utils/format-position":87,"./marker":83,"./token":84}],86:[function(require,module,exports){
function cloneArray(array) {
  var cloned = array.slice(0);

  for (var i = 0, l = cloned.length; i < l; i++) {
    if (Array.isArray(cloned[i]))
      cloned[i] = cloneArray(cloned[i]);
  }

  return cloned;
}

module.exports = cloneArray;

},{}],87:[function(require,module,exports){
function formatPosition(metadata) {
  var line = metadata[0];
  var column = metadata[1];
  var source = metadata[2];

  return source ?
    source + ':' + line + ':' + column :
    line + ':' + column;
}

module.exports = formatPosition;

},{}],88:[function(require,module,exports){
var NO_PROTOCOL_RESOURCE_PATTERN = /^\/\//;

function hasProtocol(uri) {
  return !NO_PROTOCOL_RESOURCE_PATTERN.test(uri);
}

module.exports = hasProtocol;

},{}],89:[function(require,module,exports){
var DATA_URI_PATTERN = /^data:(\S*?)?(;charset=[^;]+)?(;[^,]+?)?,(.+)/;

function isDataUriResource(uri) {
  return DATA_URI_PATTERN.test(uri);
}

module.exports = isDataUriResource;

},{}],90:[function(require,module,exports){
var HTTP_RESOURCE_PATTERN = /^http:\/\//;

function isHttpResource(uri) {
  return HTTP_RESOURCE_PATTERN.test(uri);
}

module.exports = isHttpResource;

},{}],91:[function(require,module,exports){
var HTTPS_RESOURCE_PATTERN = /^https:\/\//;

function isHttpsResource(uri) {
  return HTTPS_RESOURCE_PATTERN.test(uri);
}

module.exports = isHttpsResource;

},{}],92:[function(require,module,exports){
var IMPORT_PREFIX_PATTERN = /^@import/i;

function isImport(value) {
  return IMPORT_PREFIX_PATTERN.test(value);
}

module.exports = isImport;

},{}],93:[function(require,module,exports){
var REMOTE_RESOURCE_PATTERN = /^(\w+:\/\/|\/\/)/;

function isRemoteResource(uri) {
  return REMOTE_RESOURCE_PATTERN.test(uri);
}

module.exports = isRemoteResource;

},{}],94:[function(require,module,exports){
// adapted from http://nedbatchelder.com/blog/200712.html#e20071211T054956

var NUMBER_PATTERN = /([0-9]+)/;

function naturalCompare(value1, value2) {
  var keys1 = ('' + value1).split(NUMBER_PATTERN).map(tryParseInt);
  var keys2 = ('' + value2).split(NUMBER_PATTERN).map(tryParseInt);
  var key1;
  var key2;
  var compareFirst = Math.min(keys1.length, keys2.length);
  var i, l;

  for (i = 0, l = compareFirst; i < l; i++) {
    key1 = keys1[i];
    key2 = keys2[i];

    if (key1 != key2) {
      return key1 > key2 ? 1 : -1;
    }
  }

  return keys1.length > keys2.length ? 1 : (keys1.length == keys2.length ? 0 : -1);
}

function tryParseInt(value) {
  return ('' + parseInt(value)) == value ?
    parseInt(value) :
    value;
}

module.exports = naturalCompare;

},{}],95:[function(require,module,exports){
function override(source1, source2) {
  var target = {};
  var key1;
  var key2;
  var item;

  for (key1 in source1) {
    item = source1[key1];

    if (Array.isArray(item)) {
      target[key1] = item.slice(0);
    } else if (typeof item == 'object' && item !== null) {
      target[key1] = override(item, {});
    } else {
      target[key1] = item;
    }
  }

  for (key2 in source2) {
    item = source2[key2];

    if (key2 in target && Array.isArray(item)) {
      target[key2] = item.slice(0);
    } else if (key2 in target && typeof item == 'object' && item !== null) {
      target[key2] = override(target[key2], item);
    } else {
      target[key2] = item;
    }
  }

  return target;
}

module.exports = override;

},{}],96:[function(require,module,exports){
var Marker = require('../tokenizer/marker');

function split(value, separator) {
  var openLevel = Marker.OPEN_ROUND_BRACKET;
  var closeLevel = Marker.CLOSE_ROUND_BRACKET;
  var level = 0;
  var cursor = 0;
  var lastStart = 0;
  var lastValue;
  var lastCharacter;
  var len = value.length;
  var parts = [];

  if (value.indexOf(separator) == -1) {
    return [value];
  }

  if (value.indexOf(openLevel) == -1) {
    return value.split(separator);
  }

  while (cursor < len) {
    if (value[cursor] == openLevel) {
      level++;
    } else if (value[cursor] == closeLevel) {
      level--;
    }

    if (level === 0 && cursor > 0 && cursor + 1 < len && value[cursor] == separator) {
      parts.push(value.substring(lastStart, cursor));
      lastStart = cursor + 1;
    }

    cursor++;
  }

  if (lastStart < cursor + 1) {
    lastValue = value.substring(lastStart);
    lastCharacter = lastValue[lastValue.length - 1];
    if (lastCharacter == separator) {
      lastValue = lastValue.substring(0, lastValue.length - 1);
    }

    parts.push(lastValue);
  }

  return parts;
}

module.exports = split;

},{"../tokenizer/marker":83}],97:[function(require,module,exports){
var emptyCharacter = '';

var Breaks = require('../options/format').Breaks;
var Spaces = require('../options/format').Spaces;

var Marker = require('../tokenizer/marker');
var Token = require('../tokenizer/token');

function supportsAfterClosingBrace(token) {
  return token[1][1] == 'background' || token[1][1] == 'transform' || token[1][1] == 'src';
}

function afterClosingBrace(token, valueIndex) {
  return token[valueIndex][1][token[valueIndex][1].length - 1] == Marker.CLOSE_ROUND_BRACKET;
}

function afterComma(token, valueIndex) {
  return token[valueIndex][1] == Marker.COMMA;
}

function afterSlash(token, valueIndex) {
  return token[valueIndex][1] == Marker.FORWARD_SLASH;
}

function beforeComma(token, valueIndex) {
  return token[valueIndex + 1] && token[valueIndex + 1][1] == Marker.COMMA;
}

function beforeSlash(token, valueIndex) {
  return token[valueIndex + 1] && token[valueIndex + 1][1] == Marker.FORWARD_SLASH;
}

function inFilter(token) {
  return token[1][1] == 'filter' || token[1][1] == '-ms-filter';
}

function disallowsSpace(context, token, valueIndex) {
  return !context.spaceAfterClosingBrace && supportsAfterClosingBrace(token) && afterClosingBrace(token, valueIndex) ||
    beforeSlash(token, valueIndex) ||
    afterSlash(token, valueIndex) ||
    beforeComma(token, valueIndex) ||
    afterComma(token, valueIndex);
}

function rules(context, tokens) {
  var store = context.store;

  for (var i = 0, l = tokens.length; i < l; i++) {
    store(context, tokens[i]);

    if (i < l - 1) {
      store(context, comma(context));
    }
  }
}

function body(context, tokens) {
  var lastPropertyAt = lastPropertyIndex(tokens);

  for (var i = 0, l = tokens.length; i < l; i++) {
    property(context, tokens, i, lastPropertyAt);
  }
}

function lastPropertyIndex(tokens) {
  var index = tokens.length - 1;

  for (; index >= 0; index--) {
    if (tokens[index][0] != Token.COMMENT) {
      break;
    }
  }

  return index;
}

function property(context, tokens, position, lastPropertyAt) {
  var store = context.store;
  var token = tokens[position];
  var isPropertyBlock = token[2][0] == Token.PROPERTY_BLOCK;

  var needsSemicolon;
  if ( context.format ) {
    if ( context.format.semicolonAfterLastProperty || isPropertyBlock ) {
      needsSemicolon = true;
    } else if ( position < lastPropertyAt ) {
      needsSemicolon = true;
    } else {
      needsSemicolon = false;
    }
  } else {
    needsSemicolon = position < lastPropertyAt || isPropertyBlock;
  }

  var isLast = position === lastPropertyAt;

  switch (token[0]) {
    case Token.AT_RULE:
      store(context, token);
      store(context, semicolon(context, Breaks.AfterProperty, false));
      break;
    case Token.AT_RULE_BLOCK:
      rules(context, token[1]);
      store(context, openBrace(context, Breaks.AfterRuleBegins, true));
      body(context, token[2]);
      store(context, closeBrace(context, Breaks.AfterRuleEnds, false, isLast));
      break;
    case Token.COMMENT:
      store(context, token);
      break;
    case Token.PROPERTY:
      store(context, token[1]);
      store(context, colon(context));
      value(context, token);
      store(context, needsSemicolon ? semicolon(context, Breaks.AfterProperty, isLast) : emptyCharacter);
      break;
    case Token.RAW:
      store(context, token);
  }
}

function value(context, token) {
  var store = context.store;
  var j, m;

  if (token[2][0] == Token.PROPERTY_BLOCK) {
    store(context, openBrace(context, Breaks.AfterBlockBegins, false));
    body(context, token[2][1]);
    store(context, closeBrace(context, Breaks.AfterBlockEnds, false, true));
  } else {
    for (j = 2, m = token.length; j < m; j++) {
      store(context, token[j]);

      if (j < m - 1 && (inFilter(token) || !disallowsSpace(context, token, j))) {
        store(context, Marker.SPACE);
      }
    }
  }
}

function allowsBreak(context, where) {
  return context.format && context.format.breaks[where];
}

function allowsSpace(context, where) {
  return context.format && context.format.spaces[where];
}

function openBrace(context, where, needsPrefixSpace) {
  if (context.format) {
    context.indentBy += context.format.indentBy;
    context.indentWith = context.format.indentWith.repeat(context.indentBy);
    return (needsPrefixSpace && allowsSpace(context, Spaces.BeforeBlockBegins) ? Marker.SPACE : emptyCharacter) +
      Marker.OPEN_CURLY_BRACKET +
      (allowsBreak(context, where) ? context.format.breakWith : emptyCharacter) +
      context.indentWith;
  } else {
    return Marker.OPEN_CURLY_BRACKET;
  }
}

function closeBrace(context, where, beforeBlockEnd, isLast) {
  if (context.format) {
    context.indentBy -= context.format.indentBy;
    context.indentWith = context.format.indentWith.repeat(context.indentBy);
    return (allowsBreak(context, Breaks.AfterProperty) || beforeBlockEnd && allowsBreak(context, Breaks.BeforeBlockEnds) ? context.format.breakWith : emptyCharacter) +
      context.indentWith +
      Marker.CLOSE_CURLY_BRACKET +
      (isLast ? emptyCharacter : (allowsBreak(context, where) ? context.format.breakWith : emptyCharacter) + context.indentWith);
  } else {
    return Marker.CLOSE_CURLY_BRACKET;
  }
}

function colon(context) {
  return context.format ?
    Marker.COLON + (allowsSpace(context, Spaces.BeforeValue) ? Marker.SPACE : emptyCharacter) :
    Marker.COLON;
}

function semicolon(context, where, isLast) {
  return context.format ?
    Marker.SEMICOLON + (isLast || !allowsBreak(context, where) ? emptyCharacter : context.format.breakWith + context.indentWith) :
    Marker.SEMICOLON;
}

function comma(context) {
  return context.format ?
    Marker.COMMA + (allowsBreak(context, Breaks.BetweenSelectors) ? context.format.breakWith : emptyCharacter) + context.indentWith :
    Marker.COMMA;
}

function all(context, tokens) {
  var store = context.store;
  var token;
  var isLast;
  var i, l;

  for (i = 0, l = tokens.length; i < l; i++) {
    token = tokens[i];
    isLast = i == l - 1;

    switch (token[0]) {
      case Token.AT_RULE:
        store(context, token);
        store(context, semicolon(context, Breaks.AfterAtRule, isLast));
        break;
      case Token.AT_RULE_BLOCK:
        rules(context, token[1]);
        store(context, openBrace(context, Breaks.AfterRuleBegins, true));
        body(context, token[2]);
        store(context, closeBrace(context, Breaks.AfterRuleEnds, false, isLast));
        break;
      case Token.NESTED_BLOCK:
        rules(context, token[1]);
        store(context, openBrace(context, Breaks.AfterBlockBegins, true));
        all(context, token[2]);
        store(context, closeBrace(context, Breaks.AfterBlockEnds, true, isLast));
        break;
      case Token.COMMENT:
        store(context, token);
        store(context, allowsBreak(context, Breaks.AfterComment) ? context.format.breakWith : emptyCharacter);
        break;
      case Token.RAW:
        store(context, token);
        break;
      case Token.RULE:
        rules(context, token[1]);
        store(context, openBrace(context, Breaks.AfterRuleBegins, true));
        body(context, token[2]);
        store(context, closeBrace(context, Breaks.AfterRuleEnds, false, isLast));
        break;
    }
  }
}

module.exports = {
  all: all,
  body: body,
  property: property,
  rules: rules,
  value: value
};

},{"../options/format":61,"../tokenizer/marker":83,"../tokenizer/token":84}],98:[function(require,module,exports){
var helpers = require('./helpers');

function store(serializeContext, token) {
  serializeContext.output.push(typeof token == 'string' ? token : token[1]);
}

function context() {
  var newContext = {
    output: [],
    store: store
  };

  return newContext;
}

function all(tokens) {
  var oneTimeContext = context();
  helpers.all(oneTimeContext, tokens);
  return oneTimeContext.output.join('');
}

function body(tokens) {
  var oneTimeContext = context();
  helpers.body(oneTimeContext, tokens);
  return oneTimeContext.output.join('');
}

function property(tokens, position) {
  var oneTimeContext = context();
  helpers.property(oneTimeContext, tokens, position, true);
  return oneTimeContext.output.join('');
}

function rules(tokens) {
  var oneTimeContext = context();
  helpers.rules(oneTimeContext, tokens);
  return oneTimeContext.output.join('');
}

function value(tokens) {
  var oneTimeContext = context();
  helpers.value(oneTimeContext, tokens);
  return oneTimeContext.output.join('');
}

module.exports = {
  all: all,
  body: body,
  property: property,
  rules: rules,
  value: value
};

},{"./helpers":97}],99:[function(require,module,exports){
var all = require('./helpers').all;

function store(serializeContext, token) {
  var value = typeof token == 'string' ?
    token :
    token[1];
  var wrap = serializeContext.wrap;

  wrap(serializeContext, value);
  track(serializeContext, value);
  serializeContext.output.push(value);
}

function wrap(serializeContext, value) {
  if (serializeContext.column + value.length > serializeContext.format.wrapAt) {
    track(serializeContext, serializeContext.format.breakWith);
    serializeContext.output.push(serializeContext.format.breakWith);
  }
}

function track(serializeContext, value) {
  var parts = value.split('\n');

  serializeContext.line += parts.length - 1;
  serializeContext.column = parts.length > 1 ? 0 : (serializeContext.column + parts.pop().length);
}

function serializeStyles(tokens, context) {
  var serializeContext = {
    column: 0,
    format: context.options.format,
    indentBy: 0,
    indentWith: '',
    line: 1,
    output: [],
    spaceAfterClosingBrace: context.options.compatibility.properties.spaceAfterClosingBrace,
    store: store,
    wrap: context.options.format.wrapAt ?
      wrap :
      function () { /* noop */  }
  };

  all(serializeContext, tokens);

  return {
    styles: serializeContext.output.join('')
  };
}

module.exports = serializeStyles;

},{"./helpers":97}],100:[function(require,module,exports){
(function (process){
var SourceMapGenerator = require('source-map').SourceMapGenerator;
var all = require('./helpers').all;

var isRemoteResource = require('../utils/is-remote-resource');

var isWindows = process.platform == 'win32';

var NIX_SEPARATOR_PATTERN = /\//g;
var UNKNOWN_SOURCE = '$stdin';
var WINDOWS_SEPARATOR = '\\';

function store(serializeContext, element) {
  var fromString = typeof element == 'string';
  var value = fromString ? element : element[1];
  var mappings = fromString ? null : element[2];
  var wrap = serializeContext.wrap;

  wrap(serializeContext, value);
  track(serializeContext, value, mappings);
  serializeContext.output.push(value);
}

function wrap(serializeContext, value) {
  if (serializeContext.column + value.length > serializeContext.format.wrapAt) {
    track(serializeContext, serializeContext.format.breakWith, false);
    serializeContext.output.push(serializeContext.format.breakWith);
  }
}

function track(serializeContext, value, mappings) {
  var parts = value.split('\n');

  if (mappings) {
    trackAllMappings(serializeContext, mappings);
  }

  serializeContext.line += parts.length - 1;
  serializeContext.column = parts.length > 1 ? 0 : (serializeContext.column + parts.pop().length);
}

function trackAllMappings(serializeContext, mappings) {
  for (var i = 0, l = mappings.length; i < l; i++) {
    trackMapping(serializeContext, mappings[i]);
  }
}

function trackMapping(serializeContext, mapping) {
  var line = mapping[0];
  var column = mapping[1];
  var originalSource = mapping[2];
  var source = originalSource;
  var storedSource = source || UNKNOWN_SOURCE;

  if (isWindows && source && !isRemoteResource(source)) {
    storedSource = source.replace(NIX_SEPARATOR_PATTERN, WINDOWS_SEPARATOR);
  }

  serializeContext.outputMap.addMapping({
    generated: {
      line: serializeContext.line,
      column: serializeContext.column
    },
    source: storedSource,
    original: {
      line: line,
      column: column
    }
  });

  if (serializeContext.inlineSources && (originalSource in serializeContext.sourcesContent)) {
    serializeContext.outputMap.setSourceContent(storedSource, serializeContext.sourcesContent[originalSource]);
  }
}

function serializeStylesAndSourceMap(tokens, context) {
  var serializeContext = {
    column: 0,
    format: context.options.format,
    indentBy: 0,
    indentWith: '',
    inlineSources: context.options.sourceMapInlineSources,
    line: 1,
    output: [],
    outputMap: new SourceMapGenerator(),
    sourcesContent: context.sourcesContent,
    spaceAfterClosingBrace: context.options.compatibility.properties.spaceAfterClosingBrace,
    store: store,
    wrap: context.options.format.wrapAt ?
      wrap :
      function () { /* noop */  }
  };

  all(serializeContext, tokens);

  return {
    sourceMap: serializeContext.outputMap,
    styles: serializeContext.output.join('')
  };
}

module.exports = serializeStylesAndSourceMap;

}).call(this,require('_process'))
},{"../utils/is-remote-resource":93,"./helpers":97,"_process":112,"source-map":154}],101:[function(require,module,exports){
(function (Buffer){
// 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.

// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.

function isArray(arg) {
  if (Array.isArray) {
    return Array.isArray(arg);
  }
  return objectToString(arg) === '[object Array]';
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

exports.isBuffer = Buffer.isBuffer;

function objectToString(o) {
  return Object.prototype.toString.call(o);
}

}).call(this,{"isBuffer":require("../../is-buffer/index.js")})
},{"../../is-buffer/index.js":107}],102:[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.

var objectCreate = Object.create || objectCreatePolyfill
var objectKeys = Object.keys || objectKeysPolyfill
var bind = Function.prototype.bind || functionBindPolyfill

function EventEmitter() {
  if (!this._events || !Object.prototype.hasOwnProperty.call(this, '_events')) {
    this._events = objectCreate(null);
    this._eventsCount = 0;
  }

  this._maxListeners = this._maxListeners || undefined;
}
module.exports = EventEmitter;

// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;

EventEmitter.prototype._events = undefined;
EventEmitter.prototype._maxListeners = undefined;

// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
var defaultMaxListeners = 10;

var hasDefineProperty;
try {
  var o = {};
  if (Object.defineProperty) Object.defineProperty(o, 'x', { value: 0 });
  hasDefineProperty = o.x === 0;
} catch (err) { hasDefineProperty = false }
if (hasDefineProperty) {
  Object.defineProperty(EventEmitter, 'defaultMaxListeners', {
    enumerable: true,
    get: function() {
      return defaultMaxListeners;
    },
    set: function(arg) {
      // check whether the input is a positive number (whose value is zero or
      // greater and not a NaN).
      if (typeof arg !== 'number' || arg < 0 || arg !== arg)
        throw new TypeError('"defaultMaxListeners" must be a positive number');
      defaultMaxListeners = arg;
    }
  });
} else {
  EventEmitter.defaultMaxListeners = defaultMaxListeners;
}

// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function setMaxListeners(n) {
  if (typeof n !== 'number' || n < 0 || isNaN(n))
    throw new TypeError('"n" argument must be a positive number');
  this._maxListeners = n;
  return this;
};

function $getMaxListeners(that) {
  if (that._maxListeners === undefined)
    return EventEmitter.defaultMaxListeners;
  return that._maxListeners;
}

EventEmitter.prototype.getMaxListeners = function getMaxListeners() {
  return $getMaxListeners(this);
};

// These standalone emit* functions are used to optimize calling of event
// handlers for fast cases because emit() itself often has a variable number of
// arguments and can be deoptimized because of that. These functions always have
// the same number of arguments and thus do not get deoptimized, so the code
// inside them can execute faster.
function emitNone(handler, isFn, self) {
  if (isFn)
    handler.call(self);
  else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      listeners[i].call(self);
  }
}
function emitOne(handler, isFn, self, arg1) {
  if (isFn)
    handler.call(self, arg1);
  else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      listeners[i].call(self, arg1);
  }
}
function emitTwo(handler, isFn, self, arg1, arg2) {
  if (isFn)
    handler.call(self, arg1, arg2);
  else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      listeners[i].call(self, arg1, arg2);
  }
}
function emitThree(handler, isFn, self, arg1, arg2, arg3) {
  if (isFn)
    handler.call(self, arg1, arg2, arg3);
  else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      listeners[i].call(self, arg1, arg2, arg3);
  }
}

function emitMany(handler, isFn, self, args) {
  if (isFn)
    handler.apply(self, args);
  else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      listeners[i].apply(self, args);
  }
}

EventEmitter.prototype.emit = function emit(type) {
  var er, handler, len, args, i, events;
  var doError = (type === 'error');

  events = this._events;
  if (events)
    doError = (doError && events.error == null);
  else if (!doError)
    return false;

  // If there is no 'error' event listener then throw.
  if (doError) {
    if (arguments.length > 1)
      er = arguments[1];
    if (er instanceof Error) {
      throw er; // Unhandled 'error' event
    } else {
      // At least give some kind of context to the user
      var err = new Error('Unhandled "error" event. (' + er + ')');
      err.context = er;
      throw err;
    }
    return false;
  }

  handler = events[type];

  if (!handler)
    return false;

  var isFn = typeof handler === 'function';
  len = arguments.length;
  switch (len) {
      // fast cases
    case 1:
      emitNone(handler, isFn, this);
      break;
    case 2:
      emitOne(handler, isFn, this, arguments[1]);
      break;
    case 3:
      emitTwo(handler, isFn, this, arguments[1], arguments[2]);
      break;
    case 4:
      emitThree(handler, isFn, this, arguments[1], arguments[2], arguments[3]);
      break;
      // slower
    default:
      args = new Array(len - 1);
      for (i = 1; i < len; i++)
        args[i - 1] = arguments[i];
      emitMany(handler, isFn, this, args);
  }

  return true;
};

function _addListener(target, type, listener, prepend) {
  var m;
  var events;
  var existing;

  if (typeof listener !== 'function')
    throw new TypeError('"listener" argument must be a function');

  events = target._events;
  if (!events) {
    events = target._events = objectCreate(null);
    target._eventsCount = 0;
  } else {
    // To avoid recursion in the case that type === "newListener"! Before
    // adding it to the listeners, first emit "newListener".
    if (events.newListener) {
      target.emit('newListener', type,
          listener.listener ? listener.listener : listener);

      // Re-assign `events` because a newListener handler could have caused the
      // this._events to be assigned to a new object
      events = target._events;
    }
    existing = events[type];
  }

  if (!existing) {
    // Optimize the case of one listener. Don't need the extra array object.
    existing = events[type] = listener;
    ++target._eventsCount;
  } else {
    if (typeof existing === 'function') {
      // Adding the second element, need to change to array.
      existing = events[type] =
          prepend ? [listener, existing] : [existing, listener];
    } else {
      // If we've already got an array, just append.
      if (prepend) {
        existing.unshift(listener);
      } else {
        existing.push(listener);
      }
    }

    // Check for listener leak
    if (!existing.warned) {
      m = $getMaxListeners(target);
      if (m && m > 0 && existing.length > m) {
        existing.warned = true;
        var w = new Error('Possible EventEmitter memory leak detected. ' +
            existing.length + ' "' + String(type) + '" listeners ' +
            'added. Use emitter.setMaxListeners() to ' +
            'increase limit.');
        w.name = 'MaxListenersExceededWarning';
        w.emitter = target;
        w.type = type;
        w.count = existing.length;
        if (typeof console === 'object' && console.warn) {
          console.warn('%s: %s', w.name, w.message);
        }
      }
    }
  }

  return target;
}

EventEmitter.prototype.addListener = function addListener(type, listener) {
  return _addListener(this, type, listener, false);
};

EventEmitter.prototype.on = EventEmitter.prototype.addListener;

EventEmitter.prototype.prependListener =
    function prependListener(type, listener) {
      return _addListener(this, type, listener, true);
    };

function onceWrapper() {
  if (!this.fired) {
    this.target.removeListener(this.type, this.wrapFn);
    this.fired = true;
    switch (arguments.length) {
      case 0:
        return this.listener.call(this.target);
      case 1:
        return this.listener.call(this.target, arguments[0]);
      case 2:
        return this.listener.call(this.target, arguments[0], arguments[1]);
      case 3:
        return this.listener.call(this.target, arguments[0], arguments[1],
            arguments[2]);
      default:
        var args = new Array(arguments.length);
        for (var i = 0; i < args.length; ++i)
          args[i] = arguments[i];
        this.listener.apply(this.target, args);
    }
  }
}

function _onceWrap(target, type, listener) {
  var state = { fired: false, wrapFn: undefined, target: target, type: type, listener: listener };
  var wrapped = bind.call(onceWrapper, state);
  wrapped.listener = listener;
  state.wrapFn = wrapped;
  return wrapped;
}

EventEmitter.prototype.once = function once(type, listener) {
  if (typeof listener !== 'function')
    throw new TypeError('"listener" argument must be a function');
  this.on(type, _onceWrap(this, type, listener));
  return this;
};

EventEmitter.prototype.prependOnceListener =
    function prependOnceListener(type, listener) {
      if (typeof listener !== 'function')
        throw new TypeError('"listener" argument must be a function');
      this.prependListener(type, _onceWrap(this, type, listener));
      return this;
    };

// Emits a 'removeListener' event if and only if the listener was removed.
EventEmitter.prototype.removeListener =
    function removeListener(type, listener) {
      var list, events, position, i, originalListener;

      if (typeof listener !== 'function')
        throw new TypeError('"listener" argument must be a function');

      events = this._events;
      if (!events)
        return this;

      list = events[type];
      if (!list)
        return this;

      if (list === listener || list.listener === listener) {
        if (--this._eventsCount === 0)
          this._events = objectCreate(null);
        else {
          delete events[type];
          if (events.removeListener)
            this.emit('removeListener', type, list.listener || listener);
        }
      } else if (typeof list !== 'function') {
        position = -1;

        for (i = list.length - 1; i >= 0; i--) {
          if (list[i] === listener || list[i].listener === listener) {
            originalListener = list[i].listener;
            position = i;
            break;
          }
        }

        if (position < 0)
          return this;

        if (position === 0)
          list.shift();
        else
          spliceOne(list, position);

        if (list.length === 1)
          events[type] = list[0];

        if (events.removeListener)
          this.emit('removeListener', type, originalListener || listener);
      }

      return this;
    };

EventEmitter.prototype.removeAllListeners =
    function removeAllListeners(type) {
      var listeners, events, i;

      events = this._events;
      if (!events)
        return this;

      // not listening for removeListener, no need to emit
      if (!events.removeListener) {
        if (arguments.length === 0) {
          this._events = objectCreate(null);
          this._eventsCount = 0;
        } else if (events[type]) {
          if (--this._eventsCount === 0)
            this._events = objectCreate(null);
          else
            delete events[type];
        }
        return this;
      }

      // emit removeListener for all listeners on all events
      if (arguments.length === 0) {
        var keys = objectKeys(events);
        var key;
        for (i = 0; i < keys.length; ++i) {
          key = keys[i];
          if (key === 'removeListener') continue;
          this.removeAllListeners(key);
        }
        this.removeAllListeners('removeListener');
        this._events = objectCreate(null);
        this._eventsCount = 0;
        return this;
      }

      listeners = events[type];

      if (typeof listeners === 'function') {
        this.removeListener(type, listeners);
      } else if (listeners) {
        // LIFO order
        for (i = listeners.length - 1; i >= 0; i--) {
          this.removeListener(type, listeners[i]);
        }
      }

      return this;
    };

function _listeners(target, type, unwrap) {
  var events = target._events;

  if (!events)
    return [];

  var evlistener = events[type];
  if (!evlistener)
    return [];

  if (typeof evlistener === 'function')
    return unwrap ? [evlistener.listener || evlistener] : [evlistener];

  return unwrap ? unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length);
}

EventEmitter.prototype.listeners = function listeners(type) {
  return _listeners(this, type, true);
};

EventEmitter.prototype.rawListeners = function rawListeners(type) {
  return _listeners(this, type, false);
};

EventEmitter.listenerCount = function(emitter, type) {
  if (typeof emitter.listenerCount === 'function') {
    return emitter.listenerCount(type);
  } else {
    return listenerCount.call(emitter, type);
  }
};

EventEmitter.prototype.listenerCount = listenerCount;
function listenerCount(type) {
  var events = this._events;

  if (events) {
    var evlistener = events[type];

    if (typeof evlistener === 'function') {
      return 1;
    } else if (evlistener) {
      return evlistener.length;
    }
  }

  return 0;
}

EventEmitter.prototype.eventNames = function eventNames() {
  return this._eventsCount > 0 ? Reflect.ownKeys(this._events) : [];
};

// About 1.5x faster than the two-arg version of Array#splice().
function spliceOne(list, index) {
  for (var i = index, k = i + 1, n = list.length; k < n; i += 1, k += 1)
    list[i] = list[k];
  list.pop();
}

function arrayClone(arr, n) {
  var copy = new Array(n);
  for (var i = 0; i < n; ++i)
    copy[i] = arr[i];
  return copy;
}

function unwrapListeners(arr) {
  var ret = new Array(arr.length);
  for (var i = 0; i < ret.length; ++i) {
    ret[i] = arr[i].listener || arr[i];
  }
  return ret;
}

function objectCreatePolyfill(proto) {
  var F = function() {};
  F.prototype = proto;
  return new F;
}
function objectKeysPolyfill(obj) {
  var keys = [];
  for (var k in obj) if (Object.prototype.hasOwnProperty.call(obj, k)) {
    keys.push(k);
  }
  return k;
}
function functionBindPolyfill(context) {
  var fn = this;
  return function () {
    return fn.apply(context, arguments);
  };
}

},{}],103:[function(require,module,exports){
(function (global){
/*! https://mths.be/he v1.2.0 by @mathias | MIT license */
;(function(root) {

        // Detect free variables `exports`.
        var freeExports = typeof exports == 'object' && exports;

        // Detect free variable `module`.
        var freeModule = typeof module == 'object' && module &&
                module.exports == freeExports && module;

        // Detect free variable `global`, from Node.js or Browserified code,
        // and use it as `root`.
        var freeGlobal = typeof global == 'object' && global;
        if (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal) {
                root = freeGlobal;
        }

        /*--------------------------------------------------------------------------*/

        // All astral symbols.
        var regexAstralSymbols = /[\uD800-\uDBFF][\uDC00-\uDFFF]/g;
        // All ASCII symbols (not just printable ASCII) except those listed in the
        // first column of the overrides table.
        // https://html.spec.whatwg.org/multipage/syntax.html#table-charref-overrides
        var regexAsciiWhitelist = /[\x01-\x7F]/g;
        // All BMP symbols that are not ASCII newlines, printable ASCII symbols, or
        // code points listed in the first column of the overrides table on
        // https://html.spec.whatwg.org/multipage/syntax.html#table-charref-overrides.
        var regexBmpWhitelist = /[\x01-\t\x0B\f\x0E-\x1F\x7F\x81\x8D\x8F\x90\x9D\xA0-\uFFFF]/g;

        var regexEncodeNonAscii = /<\u20D2|=\u20E5|>\u20D2|\u205F\u200A|\u219D\u0338|\u2202\u0338|\u2220\u20D2|\u2229\uFE00|\u222A\uFE00|\u223C\u20D2|\u223D\u0331|\u223E\u0333|\u2242\u0338|\u224B\u0338|\u224D\u20D2|\u224E\u0338|\u224F\u0338|\u2250\u0338|\u2261\u20E5|\u2264\u20D2|\u2265\u20D2|\u2266\u0338|\u2267\u0338|\u2268\uFE00|\u2269\uFE00|\u226A\u0338|\u226A\u20D2|\u226B\u0338|\u226B\u20D2|\u227F\u0338|\u2282\u20D2|\u2283\u20D2|\u228A\uFE00|\u228B\uFE00|\u228F\u0338|\u2290\u0338|\u2293\uFE00|\u2294\uFE00|\u22B4\u20D2|\u22B5\u20D2|\u22D8\u0338|\u22D9\u0338|\u22DA\uFE00|\u22DB\uFE00|\u22F5\u0338|\u22F9\u0338|\u2933\u0338|\u29CF\u0338|\u29D0\u0338|\u2A6D\u0338|\u2A70\u0338|\u2A7D\u0338|\u2A7E\u0338|\u2AA1\u0338|\u2AA2\u0338|\u2AAC\uFE00|\u2AAD\uFE00|\u2AAF\u0338|\u2AB0\u0338|\u2AC5\u0338|\u2AC6\u0338|\u2ACB\uFE00|\u2ACC\uFE00|\u2AFD\u20E5|[\xA0-\u0113\u0116-\u0122\u0124-\u012B\u012E-\u014D\u0150-\u017E\u0192\u01B5\u01F5\u0237\u02C6\u02C7\u02D8-\u02DD\u0311\u0391-\u03A1\u03A3-\u03A9\u03B1-\u03C9\u03D1\u03D2\u03D5\u03D6\u03DC\u03DD\u03F0\u03F1\u03F5\u03F6\u0401-\u040C\u040E-\u044F\u0451-\u045C\u045E\u045F\u2002-\u2005\u2007-\u2010\u2013-\u2016\u2018-\u201A\u201C-\u201E\u2020-\u2022\u2025\u2026\u2030-\u2035\u2039\u203A\u203E\u2041\u2043\u2044\u204F\u2057\u205F-\u2063\u20AC\u20DB\u20DC\u2102\u2105\u210A-\u2113\u2115-\u211E\u2122\u2124\u2127-\u2129\u212C\u212D\u212F-\u2131\u2133-\u2138\u2145-\u2148\u2153-\u215E\u2190-\u219B\u219D-\u21A7\u21A9-\u21AE\u21B0-\u21B3\u21B5-\u21B7\u21BA-\u21DB\u21DD\u21E4\u21E5\u21F5\u21FD-\u2205\u2207-\u2209\u220B\u220C\u220F-\u2214\u2216-\u2218\u221A\u221D-\u2238\u223A-\u2257\u2259\u225A\u225C\u225F-\u2262\u2264-\u228B\u228D-\u229B\u229D-\u22A5\u22A7-\u22B0\u22B2-\u22BB\u22BD-\u22DB\u22DE-\u22E3\u22E6-\u22F7\u22F9-\u22FE\u2305\u2306\u2308-\u2310\u2312\u2313\u2315\u2316\u231C-\u231F\u2322\u2323\u232D\u232E\u2336\u233D\u233F\u237C\u23B0\u23B1\u23B4-\u23B6\u23DC-\u23DF\u23E2\u23E7\u2423\u24C8\u2500\u2502\u250C\u2510\u2514\u2518\u251C\u2524\u252C\u2534\u253C\u2550-\u256C\u2580\u2584\u2588\u2591-\u2593\u25A1\u25AA\u25AB\u25AD\u25AE\u25B1\u25B3-\u25B5\u25B8\u25B9\u25BD-\u25BF\u25C2\u25C3\u25CA\u25CB\u25EC\u25EF\u25F8-\u25FC\u2605\u2606\u260E\u2640\u2642\u2660\u2663\u2665\u2666\u266A\u266D-\u266F\u2713\u2717\u2720\u2736\u2758\u2772\u2773\u27C8\u27C9\u27E6-\u27ED\u27F5-\u27FA\u27FC\u27FF\u2902-\u2905\u290C-\u2913\u2916\u2919-\u2920\u2923-\u292A\u2933\u2935-\u2939\u293C\u293D\u2945\u2948-\u294B\u294E-\u2976\u2978\u2979\u297B-\u297F\u2985\u2986\u298B-\u2996\u299A\u299C\u299D\u29A4-\u29B7\u29B9\u29BB\u29BC\u29BE-\u29C5\u29C9\u29CD-\u29D0\u29DC-\u29DE\u29E3-\u29E5\u29EB\u29F4\u29F6\u2A00-\u2A02\u2A04\u2A06\u2A0C\u2A0D\u2A10-\u2A17\u2A22-\u2A27\u2A29\u2A2A\u2A2D-\u2A31\u2A33-\u2A3C\u2A3F\u2A40\u2A42-\u2A4D\u2A50\u2A53-\u2A58\u2A5A-\u2A5D\u2A5F\u2A66\u2A6A\u2A6D-\u2A75\u2A77-\u2A9A\u2A9D-\u2AA2\u2AA4-\u2AB0\u2AB3-\u2AC8\u2ACB\u2ACC\u2ACF-\u2ADB\u2AE4\u2AE6-\u2AE9\u2AEB-\u2AF3\u2AFD\uFB00-\uFB04]|\uD835[\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDCCF\uDD04\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD1E-\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD52-\uDD6B]/g;
        var encodeMap = {'\xAD':'shy','\u200C':'zwnj','\u200D':'zwj','\u200E':'lrm','\u2063':'ic','\u2062':'it','\u2061':'af','\u200F':'rlm','\u200B':'ZeroWidthSpace','\u2060':'NoBreak','\u0311':'DownBreve','\u20DB':'tdot','\u20DC':'DotDot','\t':'Tab','\n':'NewLine','\u2008':'puncsp','\u205F':'MediumSpace','\u2009':'thinsp','\u200A':'hairsp','\u2004':'emsp13','\u2002':'ensp','\u2005':'emsp14','\u2003':'emsp','\u2007':'numsp','\xA0':'nbsp','\u205F\u200A':'ThickSpace','\u203E':'oline','_':'lowbar','\u2010':'dash','\u2013':'ndash','\u2014':'mdash','\u2015':'horbar',',':'comma',';':'semi','\u204F':'bsemi',':':'colon','\u2A74':'Colone','!':'excl','\xA1':'iexcl','?':'quest','\xBF':'iquest','.':'period','\u2025':'nldr','\u2026':'mldr','\xB7':'middot','\'':'apos','\u2018':'lsquo','\u2019':'rsquo','\u201A':'sbquo','\u2039':'lsaquo','\u203A':'rsaquo','"':'quot','\u201C':'ldquo','\u201D':'rdquo','\u201E':'bdquo','\xAB':'laquo','\xBB':'raquo','(':'lpar',')':'rpar','[':'lsqb',']':'rsqb','{':'lcub','}':'rcub','\u2308':'lceil','\u2309':'rceil','\u230A':'lfloor','\u230B':'rfloor','\u2985':'lopar','\u2986':'ropar','\u298B':'lbrke','\u298C':'rbrke','\u298D':'lbrkslu','\u298E':'rbrksld','\u298F':'lbrksld','\u2990':'rbrkslu','\u2991':'langd','\u2992':'rangd','\u2993':'lparlt','\u2994':'rpargt','\u2995':'gtlPar','\u2996':'ltrPar','\u27E6':'lobrk','\u27E7':'robrk','\u27E8':'lang','\u27E9':'rang','\u27EA':'Lang','\u27EB':'Rang','\u27EC':'loang','\u27ED':'roang','\u2772':'lbbrk','\u2773':'rbbrk','\u2016':'Vert','\xA7':'sect','\xB6':'para','@':'commat','*':'ast','/':'sol','undefined':null,'&':'amp','#':'num','%':'percnt','\u2030':'permil','\u2031':'pertenk','\u2020':'dagger','\u2021':'Dagger','\u2022':'bull','\u2043':'hybull','\u2032':'prime','\u2033':'Prime','\u2034':'tprime','\u2057':'qprime','\u2035':'bprime','\u2041':'caret','`':'grave','\xB4':'acute','\u02DC':'tilde','^':'Hat','\xAF':'macr','\u02D8':'breve','\u02D9':'dot','\xA8':'die','\u02DA':'ring','\u02DD':'dblac','\xB8':'cedil','\u02DB':'ogon','\u02C6':'circ','\u02C7':'caron','\xB0':'deg','\xA9':'copy','\xAE':'reg','\u2117':'copysr','\u2118':'wp','\u211E':'rx','\u2127':'mho','\u2129':'iiota','\u2190':'larr','\u219A':'nlarr','\u2192':'rarr','\u219B':'nrarr','\u2191':'uarr','\u2193':'darr','\u2194':'harr','\u21AE':'nharr','\u2195':'varr','\u2196':'nwarr','\u2197':'nearr','\u2198':'searr','\u2199':'swarr','\u219D':'rarrw','\u219D\u0338':'nrarrw','\u219E':'Larr','\u219F':'Uarr','\u21A0':'Rarr','\u21A1':'Darr','\u21A2':'larrtl','\u21A3':'rarrtl','\u21A4':'mapstoleft','\u21A5':'mapstoup','\u21A6':'map','\u21A7':'mapstodown','\u21A9':'larrhk','\u21AA':'rarrhk','\u21AB':'larrlp','\u21AC':'rarrlp','\u21AD':'harrw','\u21B0':'lsh','\u21B1':'rsh','\u21B2':'ldsh','\u21B3':'rdsh','\u21B5':'crarr','\u21B6':'cularr','\u21B7':'curarr','\u21BA':'olarr','\u21BB':'orarr','\u21BC':'lharu','\u21BD':'lhard','\u21BE':'uharr','\u21BF':'uharl','\u21C0':'rharu','\u21C1':'rhard','\u21C2':'dharr','\u21C3':'dharl','\u21C4':'rlarr','\u21C5':'udarr','\u21C6':'lrarr','\u21C7':'llarr','\u21C8':'uuarr','\u21C9':'rrarr','\u21CA':'ddarr','\u21CB':'lrhar','\u21CC':'rlhar','\u21D0':'lArr','\u21CD':'nlArr','\u21D1':'uArr','\u21D2':'rArr','\u21CF':'nrArr','\u21D3':'dArr','\u21D4':'iff','\u21CE':'nhArr','\u21D5':'vArr','\u21D6':'nwArr','\u21D7':'neArr','\u21D8':'seArr','\u21D9':'swArr','\u21DA':'lAarr','\u21DB':'rAarr','\u21DD':'zigrarr','\u21E4':'larrb','\u21E5':'rarrb','\u21F5':'duarr','\u21FD':'loarr','\u21FE':'roarr','\u21FF':'hoarr','\u2200':'forall','\u2201':'comp','\u2202':'part','\u2202\u0338':'npart','\u2203':'exist','\u2204':'nexist','\u2205':'empty','\u2207':'Del','\u2208':'in','\u2209':'notin','\u220B':'ni','\u220C':'notni','\u03F6':'bepsi','\u220F':'prod','\u2210':'coprod','\u2211':'sum','+':'plus','\xB1':'pm','\xF7':'div','\xD7':'times','<':'lt','\u226E':'nlt','<\u20D2':'nvlt','=':'equals','\u2260':'ne','=\u20E5':'bne','\u2A75':'Equal','>':'gt','\u226F':'ngt','>\u20D2':'nvgt','\xAC':'not','|':'vert','\xA6':'brvbar','\u2212':'minus','\u2213':'mp','\u2214':'plusdo','\u2044':'frasl','\u2216':'setmn','\u2217':'lowast','\u2218':'compfn','\u221A':'Sqrt','\u221D':'prop','\u221E':'infin','\u221F':'angrt','\u2220':'ang','\u2220\u20D2':'nang','\u2221':'angmsd','\u2222':'angsph','\u2223':'mid','\u2224':'nmid','\u2225':'par','\u2226':'npar','\u2227':'and','\u2228':'or','\u2229':'cap','\u2229\uFE00':'caps','\u222A':'cup','\u222A\uFE00':'cups','\u222B':'int','\u222C':'Int','\u222D':'tint','\u2A0C':'qint','\u222E':'oint','\u222F':'Conint','\u2230':'Cconint','\u2231':'cwint','\u2232':'cwconint','\u2233':'awconint','\u2234':'there4','\u2235':'becaus','\u2236':'ratio','\u2237':'Colon','\u2238':'minusd','\u223A':'mDDot','\u223B':'homtht','\u223C':'sim','\u2241':'nsim','\u223C\u20D2':'nvsim','\u223D':'bsim','\u223D\u0331':'race','\u223E':'ac','\u223E\u0333':'acE','\u223F':'acd','\u2240':'wr','\u2242':'esim','\u2242\u0338':'nesim','\u2243':'sime','\u2244':'nsime','\u2245':'cong','\u2247':'ncong','\u2246':'simne','\u2248':'ap','\u2249':'nap','\u224A':'ape','\u224B':'apid','\u224B\u0338':'napid','\u224C':'bcong','\u224D':'CupCap','\u226D':'NotCupCap','\u224D\u20D2':'nvap','\u224E':'bump','\u224E\u0338':'nbump','\u224F':'bumpe','\u224F\u0338':'nbumpe','\u2250':'doteq','\u2250\u0338':'nedot','\u2251':'eDot','\u2252':'efDot','\u2253':'erDot','\u2254':'colone','\u2255':'ecolon','\u2256':'ecir','\u2257':'cire','\u2259':'wedgeq','\u225A':'veeeq','\u225C':'trie','\u225F':'equest','\u2261':'equiv','\u2262':'nequiv','\u2261\u20E5':'bnequiv','\u2264':'le','\u2270':'nle','\u2264\u20D2':'nvle','\u2265':'ge','\u2271':'nge','\u2265\u20D2':'nvge','\u2266':'lE','\u2266\u0338':'nlE','\u2267':'gE','\u2267\u0338':'ngE','\u2268\uFE00':'lvnE','\u2268':'lnE','\u2269':'gnE','\u2269\uFE00':'gvnE','\u226A':'ll','\u226A\u0338':'nLtv','\u226A\u20D2':'nLt','\u226B':'gg','\u226B\u0338':'nGtv','\u226B\u20D2':'nGt','\u226C':'twixt','\u2272':'lsim','\u2274':'nlsim','\u2273':'gsim','\u2275':'ngsim','\u2276':'lg','\u2278':'ntlg','\u2277':'gl','\u2279':'ntgl','\u227A':'pr','\u2280':'npr','\u227B':'sc','\u2281':'nsc','\u227C':'prcue','\u22E0':'nprcue','\u227D':'sccue','\u22E1':'nsccue','\u227E':'prsim','\u227F':'scsim','\u227F\u0338':'NotSucceedsTilde','\u2282':'sub','\u2284':'nsub','\u2282\u20D2':'vnsub','\u2283':'sup','\u2285':'nsup','\u2283\u20D2':'vnsup','\u2286':'sube','\u2288':'nsube','\u2287':'supe','\u2289':'nsupe','\u228A\uFE00':'vsubne','\u228A':'subne','\u228B\uFE00':'vsupne','\u228B':'supne','\u228D':'cupdot','\u228E':'uplus','\u228F':'sqsub','\u228F\u0338':'NotSquareSubset','\u2290':'sqsup','\u2290\u0338':'NotSquareSuperset','\u2291':'sqsube','\u22E2':'nsqsube','\u2292':'sqsupe','\u22E3':'nsqsupe','\u2293':'sqcap','\u2293\uFE00':'sqcaps','\u2294':'sqcup','\u2294\uFE00':'sqcups','\u2295':'oplus','\u2296':'ominus','\u2297':'otimes','\u2298':'osol','\u2299':'odot','\u229A':'ocir','\u229B':'oast','\u229D':'odash','\u229E':'plusb','\u229F':'minusb','\u22A0':'timesb','\u22A1':'sdotb','\u22A2':'vdash','\u22AC':'nvdash','\u22A3':'dashv','\u22A4':'top','\u22A5':'bot','\u22A7':'models','\u22A8':'vDash','\u22AD':'nvDash','\u22A9':'Vdash','\u22AE':'nVdash','\u22AA':'Vvdash','\u22AB':'VDash','\u22AF':'nVDash','\u22B0':'prurel','\u22B2':'vltri','\u22EA':'nltri','\u22B3':'vrtri','\u22EB':'nrtri','\u22B4':'ltrie','\u22EC':'nltrie','\u22B4\u20D2':'nvltrie','\u22B5':'rtrie','\u22ED':'nrtrie','\u22B5\u20D2':'nvrtrie','\u22B6':'origof','\u22B7':'imof','\u22B8':'mumap','\u22B9':'hercon','\u22BA':'intcal','\u22BB':'veebar','\u22BD':'barvee','\u22BE':'angrtvb','\u22BF':'lrtri','\u22C0':'Wedge','\u22C1':'Vee','\u22C2':'xcap','\u22C3':'xcup','\u22C4':'diam','\u22C5':'sdot','\u22C6':'Star','\u22C7':'divonx','\u22C8':'bowtie','\u22C9':'ltimes','\u22CA':'rtimes','\u22CB':'lthree','\u22CC':'rthree','\u22CD':'bsime','\u22CE':'cuvee','\u22CF':'cuwed','\u22D0':'Sub','\u22D1':'Sup','\u22D2':'Cap','\u22D3':'Cup','\u22D4':'fork','\u22D5':'epar','\u22D6':'ltdot','\u22D7':'gtdot','\u22D8':'Ll','\u22D8\u0338':'nLl','\u22D9':'Gg','\u22D9\u0338':'nGg','\u22DA\uFE00':'lesg','\u22DA':'leg','\u22DB':'gel','\u22DB\uFE00':'gesl','\u22DE':'cuepr','\u22DF':'cuesc','\u22E6':'lnsim','\u22E7':'gnsim','\u22E8':'prnsim','\u22E9':'scnsim','\u22EE':'vellip','\u22EF':'ctdot','\u22F0':'utdot','\u22F1':'dtdot','\u22F2':'disin','\u22F3':'isinsv','\u22F4':'isins','\u22F5':'isindot','\u22F5\u0338':'notindot','\u22F6':'notinvc','\u22F7':'notinvb','\u22F9':'isinE','\u22F9\u0338':'notinE','\u22FA':'nisd','\u22FB':'xnis','\u22FC':'nis','\u22FD':'notnivc','\u22FE':'notnivb','\u2305':'barwed','\u2306':'Barwed','\u230C':'drcrop','\u230D':'dlcrop','\u230E':'urcrop','\u230F':'ulcrop','\u2310':'bnot','\u2312':'profline','\u2313':'profsurf','\u2315':'telrec','\u2316':'target','\u231C':'ulcorn','\u231D':'urcorn','\u231E':'dlcorn','\u231F':'drcorn','\u2322':'frown','\u2323':'smile','\u232D':'cylcty','\u232E':'profalar','\u2336':'topbot','\u233D':'ovbar','\u233F':'solbar','\u237C':'angzarr','\u23B0':'lmoust','\u23B1':'rmoust','\u23B4':'tbrk','\u23B5':'bbrk','\u23B6':'bbrktbrk','\u23DC':'OverParenthesis','\u23DD':'UnderParenthesis','\u23DE':'OverBrace','\u23DF':'UnderBrace','\u23E2':'trpezium','\u23E7':'elinters','\u2423':'blank','\u2500':'boxh','\u2502':'boxv','\u250C':'boxdr','\u2510':'boxdl','\u2514':'boxur','\u2518':'boxul','\u251C':'boxvr','\u2524':'boxvl','\u252C':'boxhd','\u2534':'boxhu','\u253C':'boxvh','\u2550':'boxH','\u2551':'boxV','\u2552':'boxdR','\u2553':'boxDr','\u2554':'boxDR','\u2555':'boxdL','\u2556':'boxDl','\u2557':'boxDL','\u2558':'boxuR','\u2559':'boxUr','\u255A':'boxUR','\u255B':'boxuL','\u255C':'boxUl','\u255D':'boxUL','\u255E':'boxvR','\u255F':'boxVr','\u2560':'boxVR','\u2561':'boxvL','\u2562':'boxVl','\u2563':'boxVL','\u2564':'boxHd','\u2565':'boxhD','\u2566':'boxHD','\u2567':'boxHu','\u2568':'boxhU','\u2569':'boxHU','\u256A':'boxvH','\u256B':'boxVh','\u256C':'boxVH','\u2580':'uhblk','\u2584':'lhblk','\u2588':'block','\u2591':'blk14','\u2592':'blk12','\u2593':'blk34','\u25A1':'squ','\u25AA':'squf','\u25AB':'EmptyVerySmallSquare','\u25AD':'rect','\u25AE':'marker','\u25B1':'fltns','\u25B3':'xutri','\u25B4':'utrif','\u25B5':'utri','\u25B8':'rtrif','\u25B9':'rtri','\u25BD':'xdtri','\u25BE':'dtrif','\u25BF':'dtri','\u25C2':'ltrif','\u25C3':'ltri','\u25CA':'loz','\u25CB':'cir','\u25EC':'tridot','\u25EF':'xcirc','\u25F8':'ultri','\u25F9':'urtri','\u25FA':'lltri','\u25FB':'EmptySmallSquare','\u25FC':'FilledSmallSquare','\u2605':'starf','\u2606':'star','\u260E':'phone','\u2640':'female','\u2642':'male','\u2660':'spades','\u2663':'clubs','\u2665':'hearts','\u2666':'diams','\u266A':'sung','\u2713':'check','\u2717':'cross','\u2720':'malt','\u2736':'sext','\u2758':'VerticalSeparator','\u27C8':'bsolhsub','\u27C9':'suphsol','\u27F5':'xlarr','\u27F6':'xrarr','\u27F7':'xharr','\u27F8':'xlArr','\u27F9':'xrArr','\u27FA':'xhArr','\u27FC':'xmap','\u27FF':'dzigrarr','\u2902':'nvlArr','\u2903':'nvrArr','\u2904':'nvHarr','\u2905':'Map','\u290C':'lbarr','\u290D':'rbarr','\u290E':'lBarr','\u290F':'rBarr','\u2910':'RBarr','\u2911':'DDotrahd','\u2912':'UpArrowBar','\u2913':'DownArrowBar','\u2916':'Rarrtl','\u2919':'latail','\u291A':'ratail','\u291B':'lAtail','\u291C':'rAtail','\u291D':'larrfs','\u291E':'rarrfs','\u291F':'larrbfs','\u2920':'rarrbfs','\u2923':'nwarhk','\u2924':'nearhk','\u2925':'searhk','\u2926':'swarhk','\u2927':'nwnear','\u2928':'toea','\u2929':'tosa','\u292A':'swnwar','\u2933':'rarrc','\u2933\u0338':'nrarrc','\u2935':'cudarrr','\u2936':'ldca','\u2937':'rdca','\u2938':'cudarrl','\u2939':'larrpl','\u293C':'curarrm','\u293D':'cularrp','\u2945':'rarrpl','\u2948':'harrcir','\u2949':'Uarrocir','\u294A':'lurdshar','\u294B':'ldrushar','\u294E':'LeftRightVector','\u294F':'RightUpDownVector','\u2950':'DownLeftRightVector','\u2951':'LeftUpDownVector','\u2952':'LeftVectorBar','\u2953':'RightVectorBar','\u2954':'RightUpVectorBar','\u2955':'RightDownVectorBar','\u2956':'DownLeftVectorBar','\u2957':'DownRightVectorBar','\u2958':'LeftUpVectorBar','\u2959':'LeftDownVectorBar','\u295A':'LeftTeeVector','\u295B':'RightTeeVector','\u295C':'RightUpTeeVector','\u295D':'RightDownTeeVector','\u295E':'DownLeftTeeVector','\u295F':'DownRightTeeVector','\u2960':'LeftUpTeeVector','\u2961':'LeftDownTeeVector','\u2962':'lHar','\u2963':'uHar','\u2964':'rHar','\u2965':'dHar','\u2966':'luruhar','\u2967':'ldrdhar','\u2968':'ruluhar','\u2969':'rdldhar','\u296A':'lharul','\u296B':'llhard','\u296C':'rharul','\u296D':'lrhard','\u296E':'udhar','\u296F':'duhar','\u2970':'RoundImplies','\u2971':'erarr','\u2972':'simrarr','\u2973':'larrsim','\u2974':'rarrsim','\u2975':'rarrap','\u2976':'ltlarr','\u2978':'gtrarr','\u2979':'subrarr','\u297B':'suplarr','\u297C':'lfisht','\u297D':'rfisht','\u297E':'ufisht','\u297F':'dfisht','\u299A':'vzigzag','\u299C':'vangrt','\u299D':'angrtvbd','\u29A4':'ange','\u29A5':'range','\u29A6':'dwangle','\u29A7':'uwangle','\u29A8':'angmsdaa','\u29A9':'angmsdab','\u29AA':'angmsdac','\u29AB':'angmsdad','\u29AC':'angmsdae','\u29AD':'angmsdaf','\u29AE':'angmsdag','\u29AF':'angmsdah','\u29B0':'bemptyv','\u29B1':'demptyv','\u29B2':'cemptyv','\u29B3':'raemptyv','\u29B4':'laemptyv','\u29B5':'ohbar','\u29B6':'omid','\u29B7':'opar','\u29B9':'operp','\u29BB':'olcross','\u29BC':'odsold','\u29BE':'olcir','\u29BF':'ofcir','\u29C0':'olt','\u29C1':'ogt','\u29C2':'cirscir','\u29C3':'cirE','\u29C4':'solb','\u29C5':'bsolb','\u29C9':'boxbox','\u29CD':'trisb','\u29CE':'rtriltri','\u29CF':'LeftTriangleBar','\u29CF\u0338':'NotLeftTriangleBar','\u29D0':'RightTriangleBar','\u29D0\u0338':'NotRightTriangleBar','\u29DC':'iinfin','\u29DD':'infintie','\u29DE':'nvinfin','\u29E3':'eparsl','\u29E4':'smeparsl','\u29E5':'eqvparsl','\u29EB':'lozf','\u29F4':'RuleDelayed','\u29F6':'dsol','\u2A00':'xodot','\u2A01':'xoplus','\u2A02':'xotime','\u2A04':'xuplus','\u2A06':'xsqcup','\u2A0D':'fpartint','\u2A10':'cirfnint','\u2A11':'awint','\u2A12':'rppolint','\u2A13':'scpolint','\u2A14':'npolint','\u2A15':'pointint','\u2A16':'quatint','\u2A17':'intlarhk','\u2A22':'pluscir','\u2A23':'plusacir','\u2A24':'simplus','\u2A25':'plusdu','\u2A26':'plussim','\u2A27':'plustwo','\u2A29':'mcomma','\u2A2A':'minusdu','\u2A2D':'loplus','\u2A2E':'roplus','\u2A2F':'Cross','\u2A30':'timesd','\u2A31':'timesbar','\u2A33':'smashp','\u2A34':'lotimes','\u2A35':'rotimes','\u2A36':'otimesas','\u2A37':'Otimes','\u2A38':'odiv','\u2A39':'triplus','\u2A3A':'triminus','\u2A3B':'tritime','\u2A3C':'iprod','\u2A3F':'amalg','\u2A40':'capdot','\u2A42':'ncup','\u2A43':'ncap','\u2A44':'capand','\u2A45':'cupor','\u2A46':'cupcap','\u2A47':'capcup','\u2A48':'cupbrcap','\u2A49':'capbrcup','\u2A4A':'cupcup','\u2A4B':'capcap','\u2A4C':'ccups','\u2A4D':'ccaps','\u2A50':'ccupssm','\u2A53':'And','\u2A54':'Or','\u2A55':'andand','\u2A56':'oror','\u2A57':'orslope','\u2A58':'andslope','\u2A5A':'andv','\u2A5B':'orv','\u2A5C':'andd','\u2A5D':'ord','\u2A5F':'wedbar','\u2A66':'sdote','\u2A6A':'simdot','\u2A6D':'congdot','\u2A6D\u0338':'ncongdot','\u2A6E':'easter','\u2A6F':'apacir','\u2A70':'apE','\u2A70\u0338':'napE','\u2A71':'eplus','\u2A72':'pluse','\u2A73':'Esim','\u2A77':'eDDot','\u2A78':'equivDD','\u2A79':'ltcir','\u2A7A':'gtcir','\u2A7B':'ltquest','\u2A7C':'gtquest','\u2A7D':'les','\u2A7D\u0338':'nles','\u2A7E':'ges','\u2A7E\u0338':'nges','\u2A7F':'lesdot','\u2A80':'gesdot','\u2A81':'lesdoto','\u2A82':'gesdoto','\u2A83':'lesdotor','\u2A84':'gesdotol','\u2A85':'lap','\u2A86':'gap','\u2A87':'lne','\u2A88':'gne','\u2A89':'lnap','\u2A8A':'gnap','\u2A8B':'lEg','\u2A8C':'gEl','\u2A8D':'lsime','\u2A8E':'gsime','\u2A8F':'lsimg','\u2A90':'gsiml','\u2A91':'lgE','\u2A92':'glE','\u2A93':'lesges','\u2A94':'gesles','\u2A95':'els','\u2A96':'egs','\u2A97':'elsdot','\u2A98':'egsdot','\u2A99':'el','\u2A9A':'eg','\u2A9D':'siml','\u2A9E':'simg','\u2A9F':'simlE','\u2AA0':'simgE','\u2AA1':'LessLess','\u2AA1\u0338':'NotNestedLessLess','\u2AA2':'GreaterGreater','\u2AA2\u0338':'NotNestedGreaterGreater','\u2AA4':'glj','\u2AA5':'gla','\u2AA6':'ltcc','\u2AA7':'gtcc','\u2AA8':'lescc','\u2AA9':'gescc','\u2AAA':'smt','\u2AAB':'lat','\u2AAC':'smte','\u2AAC\uFE00':'smtes','\u2AAD':'late','\u2AAD\uFE00':'lates','\u2AAE':'bumpE','\u2AAF':'pre','\u2AAF\u0338':'npre','\u2AB0':'sce','\u2AB0\u0338':'nsce','\u2AB3':'prE','\u2AB4':'scE','\u2AB5':'prnE','\u2AB6':'scnE','\u2AB7':'prap','\u2AB8':'scap','\u2AB9':'prnap','\u2ABA':'scnap','\u2ABB':'Pr','\u2ABC':'Sc','\u2ABD':'subdot','\u2ABE':'supdot','\u2ABF':'subplus','\u2AC0':'supplus','\u2AC1':'submult','\u2AC2':'supmult','\u2AC3':'subedot','\u2AC4':'supedot','\u2AC5':'subE','\u2AC5\u0338':'nsubE','\u2AC6':'supE','\u2AC6\u0338':'nsupE','\u2AC7':'subsim','\u2AC8':'supsim','\u2ACB\uFE00':'vsubnE','\u2ACB':'subnE','\u2ACC\uFE00':'vsupnE','\u2ACC':'supnE','\u2ACF':'csub','\u2AD0':'csup','\u2AD1':'csube','\u2AD2':'csupe','\u2AD3':'subsup','\u2AD4':'supsub','\u2AD5':'subsub','\u2AD6':'supsup','\u2AD7':'suphsub','\u2AD8':'supdsub','\u2AD9':'forkv','\u2ADA':'topfork','\u2ADB':'mlcp','\u2AE4':'Dashv','\u2AE6':'Vdashl','\u2AE7':'Barv','\u2AE8':'vBar','\u2AE9':'vBarv','\u2AEB':'Vbar','\u2AEC':'Not','\u2AED':'bNot','\u2AEE':'rnmid','\u2AEF':'cirmid','\u2AF0':'midcir','\u2AF1':'topcir','\u2AF2':'nhpar','\u2AF3':'parsim','\u2AFD':'parsl','\u2AFD\u20E5':'nparsl','\u266D':'flat','\u266E':'natur','\u266F':'sharp','\xA4':'curren','\xA2':'cent','$':'dollar','\xA3':'pound','\xA5':'yen','\u20AC':'euro','\xB9':'sup1','\xBD':'half','\u2153':'frac13','\xBC':'frac14','\u2155':'frac15','\u2159':'frac16','\u215B':'frac18','\xB2':'sup2','\u2154':'frac23','\u2156':'frac25','\xB3':'sup3','\xBE':'frac34','\u2157':'frac35','\u215C':'frac38','\u2158':'frac45','\u215A':'frac56','\u215D':'frac58','\u215E':'frac78','\uD835\uDCB6':'ascr','\uD835\uDD52':'aopf','\uD835\uDD1E':'afr','\uD835\uDD38':'Aopf','\uD835\uDD04':'Afr','\uD835\uDC9C':'Ascr','\xAA':'ordf','\xE1':'aacute','\xC1':'Aacute','\xE0':'agrave','\xC0':'Agrave','\u0103':'abreve','\u0102':'Abreve','\xE2':'acirc','\xC2':'Acirc','\xE5':'aring','\xC5':'angst','\xE4':'auml','\xC4':'Auml','\xE3':'atilde','\xC3':'Atilde','\u0105':'aogon','\u0104':'Aogon','\u0101':'amacr','\u0100':'Amacr','\xE6':'aelig','\xC6':'AElig','\uD835\uDCB7':'bscr','\uD835\uDD53':'bopf','\uD835\uDD1F':'bfr','\uD835\uDD39':'Bopf','\u212C':'Bscr','\uD835\uDD05':'Bfr','\uD835\uDD20':'cfr','\uD835\uDCB8':'cscr','\uD835\uDD54':'copf','\u212D':'Cfr','\uD835\uDC9E':'Cscr','\u2102':'Copf','\u0107':'cacute','\u0106':'Cacute','\u0109':'ccirc','\u0108':'Ccirc','\u010D':'ccaron','\u010C':'Ccaron','\u010B':'cdot','\u010A':'Cdot','\xE7':'ccedil','\xC7':'Ccedil','\u2105':'incare','\uD835\uDD21':'dfr','\u2146':'dd','\uD835\uDD55':'dopf','\uD835\uDCB9':'dscr','\uD835\uDC9F':'Dscr','\uD835\uDD07':'Dfr','\u2145':'DD','\uD835\uDD3B':'Dopf','\u010F':'dcaron','\u010E':'Dcaron','\u0111':'dstrok','\u0110':'Dstrok','\xF0':'eth','\xD0':'ETH','\u2147':'ee','\u212F':'escr','\uD835\uDD22':'efr','\uD835\uDD56':'eopf','\u2130':'Escr','\uD835\uDD08':'Efr','\uD835\uDD3C':'Eopf','\xE9':'eacute','\xC9':'Eacute','\xE8':'egrave','\xC8':'Egrave','\xEA':'ecirc','\xCA':'Ecirc','\u011B':'ecaron','\u011A':'Ecaron','\xEB':'euml','\xCB':'Euml','\u0117':'edot','\u0116':'Edot','\u0119':'eogon','\u0118':'Eogon','\u0113':'emacr','\u0112':'Emacr','\uD835\uDD23':'ffr','\uD835\uDD57':'fopf','\uD835\uDCBB':'fscr','\uD835\uDD09':'Ffr','\uD835\uDD3D':'Fopf','\u2131':'Fscr','\uFB00':'fflig','\uFB03':'ffilig','\uFB04':'ffllig','\uFB01':'filig','fj':'fjlig','\uFB02':'fllig','\u0192':'fnof','\u210A':'gscr','\uD835\uDD58':'gopf','\uD835\uDD24':'gfr','\uD835\uDCA2':'Gscr','\uD835\uDD3E':'Gopf','\uD835\uDD0A':'Gfr','\u01F5':'gacute','\u011F':'gbreve','\u011E':'Gbreve','\u011D':'gcirc','\u011C':'Gcirc','\u0121':'gdot','\u0120':'Gdot','\u0122':'Gcedil','\uD835\uDD25':'hfr','\u210E':'planckh','\uD835\uDCBD':'hscr','\uD835\uDD59':'hopf','\u210B':'Hscr','\u210C':'Hfr','\u210D':'Hopf','\u0125':'hcirc','\u0124':'Hcirc','\u210F':'hbar','\u0127':'hstrok','\u0126':'Hstrok','\uD835\uDD5A':'iopf','\uD835\uDD26':'ifr','\uD835\uDCBE':'iscr','\u2148':'ii','\uD835\uDD40':'Iopf','\u2110':'Iscr','\u2111':'Im','\xED':'iacute','\xCD':'Iacute','\xEC':'igrave','\xCC':'Igrave','\xEE':'icirc','\xCE':'Icirc','\xEF':'iuml','\xCF':'Iuml','\u0129':'itilde','\u0128':'Itilde','\u0130':'Idot','\u012F':'iogon','\u012E':'Iogon','\u012B':'imacr','\u012A':'Imacr','\u0133':'ijlig','\u0132':'IJlig','\u0131':'imath','\uD835\uDCBF':'jscr','\uD835\uDD5B':'jopf','\uD835\uDD27':'jfr','\uD835\uDCA5':'Jscr','\uD835\uDD0D':'Jfr','\uD835\uDD41':'Jopf','\u0135':'jcirc','\u0134':'Jcirc','\u0237':'jmath','\uD835\uDD5C':'kopf','\uD835\uDCC0':'kscr','\uD835\uDD28':'kfr','\uD835\uDCA6':'Kscr','\uD835\uDD42':'Kopf','\uD835\uDD0E':'Kfr','\u0137':'kcedil','\u0136':'Kcedil','\uD835\uDD29':'lfr','\uD835\uDCC1':'lscr','\u2113':'ell','\uD835\uDD5D':'lopf','\u2112':'Lscr','\uD835\uDD0F':'Lfr','\uD835\uDD43':'Lopf','\u013A':'lacute','\u0139':'Lacute','\u013E':'lcaron','\u013D':'Lcaron','\u013C':'lcedil','\u013B':'Lcedil','\u0142':'lstrok','\u0141':'Lstrok','\u0140':'lmidot','\u013F':'Lmidot','\uD835\uDD2A':'mfr','\uD835\uDD5E':'mopf','\uD835\uDCC2':'mscr','\uD835\uDD10':'Mfr','\uD835\uDD44':'Mopf','\u2133':'Mscr','\uD835\uDD2B':'nfr','\uD835\uDD5F':'nopf','\uD835\uDCC3':'nscr','\u2115':'Nopf','\uD835\uDCA9':'Nscr','\uD835\uDD11':'Nfr','\u0144':'nacute','\u0143':'Nacute','\u0148':'ncaron','\u0147':'Ncaron','\xF1':'ntilde','\xD1':'Ntilde','\u0146':'ncedil','\u0145':'Ncedil','\u2116':'numero','\u014B':'eng','\u014A':'ENG','\uD835\uDD60':'oopf','\uD835\uDD2C':'ofr','\u2134':'oscr','\uD835\uDCAA':'Oscr','\uD835\uDD12':'Ofr','\uD835\uDD46':'Oopf','\xBA':'ordm','\xF3':'oacute','\xD3':'Oacute','\xF2':'ograve','\xD2':'Ograve','\xF4':'ocirc','\xD4':'Ocirc','\xF6':'ouml','\xD6':'Ouml','\u0151':'odblac','\u0150':'Odblac','\xF5':'otilde','\xD5':'Otilde','\xF8':'oslash','\xD8':'Oslash','\u014D':'omacr','\u014C':'Omacr','\u0153':'oelig','\u0152':'OElig','\uD835\uDD2D':'pfr','\uD835\uDCC5':'pscr','\uD835\uDD61':'popf','\u2119':'Popf','\uD835\uDD13':'Pfr','\uD835\uDCAB':'Pscr','\uD835\uDD62':'qopf','\uD835\uDD2E':'qfr','\uD835\uDCC6':'qscr','\uD835\uDCAC':'Qscr','\uD835\uDD14':'Qfr','\u211A':'Qopf','\u0138':'kgreen','\uD835\uDD2F':'rfr','\uD835\uDD63':'ropf','\uD835\uDCC7':'rscr','\u211B':'Rscr','\u211C':'Re','\u211D':'Ropf','\u0155':'racute','\u0154':'Racute','\u0159':'rcaron','\u0158':'Rcaron','\u0157':'rcedil','\u0156':'Rcedil','\uD835\uDD64':'sopf','\uD835\uDCC8':'sscr','\uD835\uDD30':'sfr','\uD835\uDD4A':'Sopf','\uD835\uDD16':'Sfr','\uD835\uDCAE':'Sscr','\u24C8':'oS','\u015B':'sacute','\u015A':'Sacute','\u015D':'scirc','\u015C':'Scirc','\u0161':'scaron','\u0160':'Scaron','\u015F':'scedil','\u015E':'Scedil','\xDF':'szlig','\uD835\uDD31':'tfr','\uD835\uDCC9':'tscr','\uD835\uDD65':'topf','\uD835\uDCAF':'Tscr','\uD835\uDD17':'Tfr','\uD835\uDD4B':'Topf','\u0165':'tcaron','\u0164':'Tcaron','\u0163':'tcedil','\u0162':'Tcedil','\u2122':'trade','\u0167':'tstrok','\u0166':'Tstrok','\uD835\uDCCA':'uscr','\uD835\uDD66':'uopf','\uD835\uDD32':'ufr','\uD835\uDD4C':'Uopf','\uD835\uDD18':'Ufr','\uD835\uDCB0':'Uscr','\xFA':'uacute','\xDA':'Uacute','\xF9':'ugrave','\xD9':'Ugrave','\u016D':'ubreve','\u016C':'Ubreve','\xFB':'ucirc','\xDB':'Ucirc','\u016F':'uring','\u016E':'Uring','\xFC':'uuml','\xDC':'Uuml','\u0171':'udblac','\u0170':'Udblac','\u0169':'utilde','\u0168':'Utilde','\u0173':'uogon','\u0172':'Uogon','\u016B':'umacr','\u016A':'Umacr','\uD835\uDD33':'vfr','\uD835\uDD67':'vopf','\uD835\uDCCB':'vscr','\uD835\uDD19':'Vfr','\uD835\uDD4D':'Vopf','\uD835\uDCB1':'Vscr','\uD835\uDD68':'wopf','\uD835\uDCCC':'wscr','\uD835\uDD34':'wfr','\uD835\uDCB2':'Wscr','\uD835\uDD4E':'Wopf','\uD835\uDD1A':'Wfr','\u0175':'wcirc','\u0174':'Wcirc','\uD835\uDD35':'xfr','\uD835\uDCCD':'xscr','\uD835\uDD69':'xopf','\uD835\uDD4F':'Xopf','\uD835\uDD1B':'Xfr','\uD835\uDCB3':'Xscr','\uD835\uDD36':'yfr','\uD835\uDCCE':'yscr','\uD835\uDD6A':'yopf','\uD835\uDCB4':'Yscr','\uD835\uDD1C':'Yfr','\uD835\uDD50':'Yopf','\xFD':'yacute','\xDD':'Yacute','\u0177':'ycirc','\u0176':'Ycirc','\xFF':'yuml','\u0178':'Yuml','\uD835\uDCCF':'zscr','\uD835\uDD37':'zfr','\uD835\uDD6B':'zopf','\u2128':'Zfr','\u2124':'Zopf','\uD835\uDCB5':'Zscr','\u017A':'zacute','\u0179':'Zacute','\u017E':'zcaron','\u017D':'Zcaron','\u017C':'zdot','\u017B':'Zdot','\u01B5':'imped','\xFE':'thorn','\xDE':'THORN','\u0149':'napos','\u03B1':'alpha','\u0391':'Alpha','\u03B2':'beta','\u0392':'Beta','\u03B3':'gamma','\u0393':'Gamma','\u03B4':'delta','\u0394':'Delta','\u03B5':'epsi','\u03F5':'epsiv','\u0395':'Epsilon','\u03DD':'gammad','\u03DC':'Gammad','\u03B6':'zeta','\u0396':'Zeta','\u03B7':'eta','\u0397':'Eta','\u03B8':'theta','\u03D1':'thetav','\u0398':'Theta','\u03B9':'iota','\u0399':'Iota','\u03BA':'kappa','\u03F0':'kappav','\u039A':'Kappa','\u03BB':'lambda','\u039B':'Lambda','\u03BC':'mu','\xB5':'micro','\u039C':'Mu','\u03BD':'nu','\u039D':'Nu','\u03BE':'xi','\u039E':'Xi','\u03BF':'omicron','\u039F':'Omicron','\u03C0':'pi','\u03D6':'piv','\u03A0':'Pi','\u03C1':'rho','\u03F1':'rhov','\u03A1':'Rho','\u03C3':'sigma','\u03A3':'Sigma','\u03C2':'sigmaf','\u03C4':'tau','\u03A4':'Tau','\u03C5':'upsi','\u03A5':'Upsilon','\u03D2':'Upsi','\u03C6':'phi','\u03D5':'phiv','\u03A6':'Phi','\u03C7':'chi','\u03A7':'Chi','\u03C8':'psi','\u03A8':'Psi','\u03C9':'omega','\u03A9':'ohm','\u0430':'acy','\u0410':'Acy','\u0431':'bcy','\u0411':'Bcy','\u0432':'vcy','\u0412':'Vcy','\u0433':'gcy','\u0413':'Gcy','\u0453':'gjcy','\u0403':'GJcy','\u0434':'dcy','\u0414':'Dcy','\u0452':'djcy','\u0402':'DJcy','\u0435':'iecy','\u0415':'IEcy','\u0451':'iocy','\u0401':'IOcy','\u0454':'jukcy','\u0404':'Jukcy','\u0436':'zhcy','\u0416':'ZHcy','\u0437':'zcy','\u0417':'Zcy','\u0455':'dscy','\u0405':'DScy','\u0438':'icy','\u0418':'Icy','\u0456':'iukcy','\u0406':'Iukcy','\u0457':'yicy','\u0407':'YIcy','\u0439':'jcy','\u0419':'Jcy','\u0458':'jsercy','\u0408':'Jsercy','\u043A':'kcy','\u041A':'Kcy','\u045C':'kjcy','\u040C':'KJcy','\u043B':'lcy','\u041B':'Lcy','\u0459':'ljcy','\u0409':'LJcy','\u043C':'mcy','\u041C':'Mcy','\u043D':'ncy','\u041D':'Ncy','\u045A':'njcy','\u040A':'NJcy','\u043E':'ocy','\u041E':'Ocy','\u043F':'pcy','\u041F':'Pcy','\u0440':'rcy','\u0420':'Rcy','\u0441':'scy','\u0421':'Scy','\u0442':'tcy','\u0422':'Tcy','\u045B':'tshcy','\u040B':'TSHcy','\u0443':'ucy','\u0423':'Ucy','\u045E':'ubrcy','\u040E':'Ubrcy','\u0444':'fcy','\u0424':'Fcy','\u0445':'khcy','\u0425':'KHcy','\u0446':'tscy','\u0426':'TScy','\u0447':'chcy','\u0427':'CHcy','\u045F':'dzcy','\u040F':'DZcy','\u0448':'shcy','\u0428':'SHcy','\u0449':'shchcy','\u0429':'SHCHcy','\u044A':'hardcy','\u042A':'HARDcy','\u044B':'ycy','\u042B':'Ycy','\u044C':'softcy','\u042C':'SOFTcy','\u044D':'ecy','\u042D':'Ecy','\u044E':'yucy','\u042E':'YUcy','\u044F':'yacy','\u042F':'YAcy','\u2135':'aleph','\u2136':'beth','\u2137':'gimel','\u2138':'daleth'};

        var regexEscape = /["&'<>`]/g;
        var escapeMap = {
                '"': '&quot;',
                '&': '&amp;',
                '\'': '&#x27;',
                '<': '&lt;',
                // See https://mathiasbynens.be/notes/ambiguous-ampersands: in HTML, the
                // following is not strictly necessary unless it’s part of a tag or an
                // unquoted attribute value. We’re only escaping it to support those
                // situations, and for XML support.
                '>': '&gt;',
                // In Internet Explorer ≤ 8, the backtick character can be used
                // to break out of (un)quoted attribute values or HTML comments.
                // See http://html5sec.org/#102, http://html5sec.org/#108, and
                // http://html5sec.org/#133.
                '`': '&#x60;'
        };

        var regexInvalidEntity = /&#(?:[xX][^a-fA-F0-9]|[^0-9xX])/;
        var regexInvalidRawCodePoint = /[\0-\x08\x0B\x0E-\x1F\x7F-\x9F\uFDD0-\uFDEF\uFFFE\uFFFF]|[\uD83F\uD87F\uD8BF\uD8FF\uD93F\uD97F\uD9BF\uD9FF\uDA3F\uDA7F\uDABF\uDAFF\uDB3F\uDB7F\uDBBF\uDBFF][\uDFFE\uDFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF]/;
        var regexDecode = /&(CounterClockwiseContourIntegral|DoubleLongLeftRightArrow|ClockwiseContourIntegral|NotNestedGreaterGreater|NotSquareSupersetEqual|DiacriticalDoubleAcute|NotRightTriangleEqual|NotSucceedsSlantEqual|NotPrecedesSlantEqual|CloseCurlyDoubleQuote|NegativeVeryThinSpace|DoubleContourIntegral|FilledVerySmallSquare|CapitalDifferentialD|OpenCurlyDoubleQuote|EmptyVerySmallSquare|NestedGreaterGreater|DoubleLongRightArrow|NotLeftTriangleEqual|NotGreaterSlantEqual|ReverseUpEquilibrium|DoubleLeftRightArrow|NotSquareSubsetEqual|NotDoubleVerticalBar|RightArrowLeftArrow|NotGreaterFullEqual|NotRightTriangleBar|SquareSupersetEqual|DownLeftRightVector|DoubleLongLeftArrow|leftrightsquigarrow|LeftArrowRightArrow|NegativeMediumSpace|blacktriangleright|RightDownVectorBar|PrecedesSlantEqual|RightDoubleBracket|SucceedsSlantEqual|NotLeftTriangleBar|RightTriangleEqual|SquareIntersection|RightDownTeeVector|ReverseEquilibrium|NegativeThickSpace|longleftrightarrow|Longleftrightarrow|LongLeftRightArrow|DownRightTeeVector|DownRightVectorBar|GreaterSlantEqual|SquareSubsetEqual|LeftDownVectorBar|LeftDoubleBracket|VerticalSeparator|rightleftharpoons|NotGreaterGreater|NotSquareSuperset|blacktriangleleft|blacktriangledown|NegativeThinSpace|LeftDownTeeVector|NotLessSlantEqual|leftrightharpoons|DoubleUpDownArrow|DoubleVerticalBar|LeftTriangleEqual|FilledSmallSquare|twoheadrightarrow|NotNestedLessLess|DownLeftTeeVector|DownLeftVectorBar|RightAngleBracket|NotTildeFullEqual|NotReverseElement|RightUpDownVector|DiacriticalTilde|NotSucceedsTilde|circlearrowright|NotPrecedesEqual|rightharpoondown|DoubleRightArrow|NotSucceedsEqual|NonBreakingSpace|NotRightTriangle|LessEqualGreater|RightUpTeeVector|LeftAngleBracket|GreaterFullEqual|DownArrowUpArrow|RightUpVectorBar|twoheadleftarrow|GreaterEqualLess|downharpoonright|RightTriangleBar|ntrianglerighteq|NotSupersetEqual|LeftUpDownVector|DiacriticalAcute|rightrightarrows|vartriangleright|UpArrowDownArrow|DiacriticalGrave|UnderParenthesis|EmptySmallSquare|LeftUpVectorBar|leftrightarrows|DownRightVector|downharpoonleft|trianglerighteq|ShortRightArrow|OverParenthesis|DoubleLeftArrow|DoubleDownArrow|NotSquareSubset|bigtriangledown|ntrianglelefteq|UpperRightArrow|curvearrowright|vartriangleleft|NotLeftTriangle|nleftrightarrow|LowerRightArrow|NotHumpDownHump|NotGreaterTilde|rightthreetimes|LeftUpTeeVector|NotGreaterEqual|straightepsilon|LeftTriangleBar|rightsquigarrow|ContourIntegral|rightleftarrows|CloseCurlyQuote|RightDownVector|LeftRightVector|nLeftrightarrow|leftharpoondown|circlearrowleft|SquareSuperset|OpenCurlyQuote|hookrightarrow|HorizontalLine|DiacriticalDot|NotLessGreater|ntriangleright|DoubleRightTee|InvisibleComma|InvisibleTimes|LowerLeftArrow|DownLeftVector|NotSubsetEqual|curvearrowleft|trianglelefteq|NotVerticalBar|TildeFullEqual|downdownarrows|NotGreaterLess|RightTeeVector|ZeroWidthSpace|looparrowright|LongRightArrow|doublebarwedge|ShortLeftArrow|ShortDownArrow|RightVectorBar|GreaterGreater|ReverseElement|rightharpoonup|LessSlantEqual|leftthreetimes|upharpoonright|rightarrowtail|LeftDownVector|Longrightarrow|NestedLessLess|UpperLeftArrow|nshortparallel|leftleftarrows|leftrightarrow|Leftrightarrow|LeftRightArrow|longrightarrow|upharpoonleft|RightArrowBar|ApplyFunction|LeftTeeVector|leftarrowtail|NotEqualTilde|varsubsetneqq|varsupsetneqq|RightTeeArrow|SucceedsEqual|SucceedsTilde|LeftVectorBar|SupersetEqual|hookleftarrow|DifferentialD|VerticalTilde|VeryThinSpace|blacktriangle|bigtriangleup|LessFullEqual|divideontimes|leftharpoonup|UpEquilibrium|ntriangleleft|RightTriangle|measuredangle|shortparallel|longleftarrow|Longleftarrow|LongLeftArrow|DoubleLeftTee|Poincareplane|PrecedesEqual|triangleright|DoubleUpArrow|RightUpVector|fallingdotseq|looparrowleft|PrecedesTilde|NotTildeEqual|NotTildeTilde|smallsetminus|Proportional|triangleleft|triangledown|UnderBracket|NotHumpEqual|exponentiale|ExponentialE|NotLessTilde|HilbertSpace|RightCeiling|blacklozenge|varsupsetneq|HumpDownHump|GreaterEqual|VerticalLine|LeftTeeArrow|NotLessEqual|DownTeeArrow|LeftTriangle|varsubsetneq|Intersection|NotCongruent|DownArrowBar|LeftUpVector|LeftArrowBar|risingdotseq|GreaterTilde|RoundImplies|SquareSubset|ShortUpArrow|NotSuperset|quaternions|precnapprox|backepsilon|preccurlyeq|OverBracket|blacksquare|MediumSpace|VerticalBar|circledcirc|circleddash|CircleMinus|CircleTimes|LessGreater|curlyeqprec|curlyeqsucc|diamondsuit|UpDownArrow|Updownarrow|RuleDelayed|Rrightarrow|updownarrow|RightVector|nRightarrow|nrightarrow|eqslantless|LeftCeiling|Equilibrium|SmallCircle|expectation|NotSucceeds|thickapprox|GreaterLess|SquareUnion|NotPrecedes|NotLessLess|straightphi|succnapprox|succcurlyeq|SubsetEqual|sqsupseteq|Proportion|Laplacetrf|ImaginaryI|supsetneqq|NotGreater|gtreqqless|NotElement|ThickSpace|TildeEqual|TildeTilde|Fouriertrf|rmoustache|EqualTilde|eqslantgtr|UnderBrace|LeftVector|UpArrowBar|nLeftarrow|nsubseteqq|subsetneqq|nsupseteqq|nleftarrow|succapprox|lessapprox|UpTeeArrow|upuparrows|curlywedge|lesseqqgtr|varepsilon|varnothing|RightFloor|c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|Fscr|gdot|gsim|Gscr|gscr|Gopf|gopf|gneq|Gdot|tosa|gnap|Topf|topf|geqq|toea|GJcy|gjcy|tint|gesl|mid|Sfr|ggg|top|ges|gla|glE|glj|geq|gne|gEl|gel|gnE|Gcy|gcy|gap|Tfr|tfr|Tcy|tcy|Hat|Tau|Ffr|tau|Tab|hfr|Hfr|ffr|Fcy|fcy|icy|Icy|iff|ETH|eth|ifr|Ifr|Eta|eta|int|Int|Sup|sup|ucy|Ucy|Sum|sum|jcy|ENG|ufr|Ufr|eng|Jcy|jfr|els|ell|egs|Efr|efr|Jfr|uml|kcy|Kcy|Ecy|ecy|kfr|Kfr|lap|Sub|sub|lat|lcy|Lcy|leg|Dot|dot|lEg|leq|les|squ|div|die|lfr|Lfr|lgE|Dfr|dfr|Del|deg|Dcy|dcy|lne|lnE|sol|loz|smt|Cup|lrm|cup|lsh|Lsh|sim|shy|map|Map|mcy|Mcy|mfr|Mfr|mho|gfr|Gfr|sfr|cir|Chi|chi|nap|Cfr|vcy|Vcy|cfr|Scy|scy|ncy|Ncy|vee|Vee|Cap|cap|nfr|scE|sce|Nfr|nge|ngE|nGg|vfr|Vfr|ngt|bot|nGt|nis|niv|Rsh|rsh|nle|nlE|bne|Bfr|bfr|nLl|nlt|nLt|Bcy|bcy|not|Not|rlm|wfr|Wfr|npr|nsc|num|ocy|ast|Ocy|ofr|xfr|Xfr|Ofr|ogt|ohm|apE|olt|Rho|ape|rho|Rfr|rfr|ord|REG|ang|reg|orv|And|and|AMP|Rcy|amp|Afr|ycy|Ycy|yen|yfr|Yfr|rcy|par|pcy|Pcy|pfr|Pfr|phi|Phi|afr|Acy|acy|zcy|Zcy|piv|acE|acd|zfr|Zfr|pre|prE|psi|Psi|qfr|Qfr|zwj|Or|ge|Gg|gt|gg|el|oS|lt|Lt|LT|Re|lg|gl|eg|ne|Im|it|le|DD|wp|wr|nu|Nu|dd|lE|Sc|sc|pi|Pi|ee|af|ll|Ll|rx|gE|xi|pm|Xi|ic|pr|Pr|in|ni|mp|mu|ac|Mu|or|ap|Gt|GT|ii);|&(Aacute|Agrave|Atilde|Ccedil|Eacute|Egrave|Iacute|Igrave|Ntilde|Oacute|Ograve|Oslash|Otilde|Uacute|Ugrave|Yacute|aacute|agrave|atilde|brvbar|ccedil|curren|divide|eacute|egrave|frac12|frac14|frac34|iacute|igrave|iquest|middot|ntilde|oacute|ograve|oslash|otilde|plusmn|uacute|ugrave|yacute|AElig|Acirc|Aring|Ecirc|Icirc|Ocirc|THORN|Ucirc|acirc|acute|aelig|aring|cedil|ecirc|icirc|iexcl|laquo|micro|ocirc|pound|raquo|szlig|thorn|times|ucirc|Auml|COPY|Euml|Iuml|Ouml|QUOT|Uuml|auml|cent|copy|euml|iuml|macr|nbsp|ordf|ordm|ouml|para|quot|sect|sup1|sup2|sup3|uuml|yuml|AMP|ETH|REG|amp|deg|eth|not|reg|shy|uml|yen|GT|LT|gt|lt)(?!;)([=a-zA-Z0-9]?)|&#([0-9]+)(;?)|&#[xX]([a-fA-F0-9]+)(;?)|&([0-9a-zA-Z]+)/g;
        var decodeMap = {'aacute':'\xE1','Aacute':'\xC1','abreve':'\u0103','Abreve':'\u0102','ac':'\u223E','acd':'\u223F','acE':'\u223E\u0333','acirc':'\xE2','Acirc':'\xC2','acute':'\xB4','acy':'\u0430','Acy':'\u0410','aelig':'\xE6','AElig':'\xC6','af':'\u2061','afr':'\uD835\uDD1E','Afr':'\uD835\uDD04','agrave':'\xE0','Agrave':'\xC0','alefsym':'\u2135','aleph':'\u2135','alpha':'\u03B1','Alpha':'\u0391','amacr':'\u0101','Amacr':'\u0100','amalg':'\u2A3F','amp':'&','AMP':'&','and':'\u2227','And':'\u2A53','andand':'\u2A55','andd':'\u2A5C','andslope':'\u2A58','andv':'\u2A5A','ang':'\u2220','ange':'\u29A4','angle':'\u2220','angmsd':'\u2221','angmsdaa':'\u29A8','angmsdab':'\u29A9','angmsdac':'\u29AA','angmsdad':'\u29AB','angmsdae':'\u29AC','angmsdaf':'\u29AD','angmsdag':'\u29AE','angmsdah':'\u29AF','angrt':'\u221F','angrtvb':'\u22BE','angrtvbd':'\u299D','angsph':'\u2222','angst':'\xC5','angzarr':'\u237C','aogon':'\u0105','Aogon':'\u0104','aopf':'\uD835\uDD52','Aopf':'\uD835\uDD38','ap':'\u2248','apacir':'\u2A6F','ape':'\u224A','apE':'\u2A70','apid':'\u224B','apos':'\'','ApplyFunction':'\u2061','approx':'\u2248','approxeq':'\u224A','aring':'\xE5','Aring':'\xC5','ascr':'\uD835\uDCB6','Ascr':'\uD835\uDC9C','Assign':'\u2254','ast':'*','asymp':'\u2248','asympeq':'\u224D','atilde':'\xE3','Atilde':'\xC3','auml':'\xE4','Auml':'\xC4','awconint':'\u2233','awint':'\u2A11','backcong':'\u224C','backepsilon':'\u03F6','backprime':'\u2035','backsim':'\u223D','backsimeq':'\u22CD','Backslash':'\u2216','Barv':'\u2AE7','barvee':'\u22BD','barwed':'\u2305','Barwed':'\u2306','barwedge':'\u2305','bbrk':'\u23B5','bbrktbrk':'\u23B6','bcong':'\u224C','bcy':'\u0431','Bcy':'\u0411','bdquo':'\u201E','becaus':'\u2235','because':'\u2235','Because':'\u2235','bemptyv':'\u29B0','bepsi':'\u03F6','bernou':'\u212C','Bernoullis':'\u212C','beta':'\u03B2','Beta':'\u0392','beth':'\u2136','between':'\u226C','bfr':'\uD835\uDD1F','Bfr':'\uD835\uDD05','bigcap':'\u22C2','bigcirc':'\u25EF','bigcup':'\u22C3','bigodot':'\u2A00','bigoplus':'\u2A01','bigotimes':'\u2A02','bigsqcup':'\u2A06','bigstar':'\u2605','bigtriangledown':'\u25BD','bigtriangleup':'\u25B3','biguplus':'\u2A04','bigvee':'\u22C1','bigwedge':'\u22C0','bkarow':'\u290D','blacklozenge':'\u29EB','blacksquare':'\u25AA','blacktriangle':'\u25B4','blacktriangledown':'\u25BE','blacktriangleleft':'\u25C2','blacktriangleright':'\u25B8','blank':'\u2423','blk12':'\u2592','blk14':'\u2591','blk34':'\u2593','block':'\u2588','bne':'=\u20E5','bnequiv':'\u2261\u20E5','bnot':'\u2310','bNot':'\u2AED','bopf':'\uD835\uDD53','Bopf':'\uD835\uDD39','bot':'\u22A5','bottom':'\u22A5','bowtie':'\u22C8','boxbox':'\u29C9','boxdl':'\u2510','boxdL':'\u2555','boxDl':'\u2556','boxDL':'\u2557','boxdr':'\u250C','boxdR':'\u2552','boxDr':'\u2553','boxDR':'\u2554','boxh':'\u2500','boxH':'\u2550','boxhd':'\u252C','boxhD':'\u2565','boxHd':'\u2564','boxHD':'\u2566','boxhu':'\u2534','boxhU':'\u2568','boxHu':'\u2567','boxHU':'\u2569','boxminus':'\u229F','boxplus':'\u229E','boxtimes':'\u22A0','boxul':'\u2518','boxuL':'\u255B','boxUl':'\u255C','boxUL':'\u255D','boxur':'\u2514','boxuR':'\u2558','boxUr':'\u2559','boxUR':'\u255A','boxv':'\u2502','boxV':'\u2551','boxvh':'\u253C','boxvH':'\u256A','boxVh':'\u256B','boxVH':'\u256C','boxvl':'\u2524','boxvL':'\u2561','boxVl':'\u2562','boxVL':'\u2563','boxvr':'\u251C','boxvR':'\u255E','boxVr':'\u255F','boxVR':'\u2560','bprime':'\u2035','breve':'\u02D8','Breve':'\u02D8','brvbar':'\xA6','bscr':'\uD835\uDCB7','Bscr':'\u212C','bsemi':'\u204F','bsim':'\u223D','bsime':'\u22CD','bsol':'\\','bsolb':'\u29C5','bsolhsub':'\u27C8','bull':'\u2022','bullet':'\u2022','bump':'\u224E','bumpe':'\u224F','bumpE':'\u2AAE','bumpeq':'\u224F','Bumpeq':'\u224E','cacute':'\u0107','Cacute':'\u0106','cap':'\u2229','Cap':'\u22D2','capand':'\u2A44','capbrcup':'\u2A49','capcap':'\u2A4B','capcup':'\u2A47','capdot':'\u2A40','CapitalDifferentialD':'\u2145','caps':'\u2229\uFE00','caret':'\u2041','caron':'\u02C7','Cayleys':'\u212D','ccaps':'\u2A4D','ccaron':'\u010D','Ccaron':'\u010C','ccedil':'\xE7','Ccedil':'\xC7','ccirc':'\u0109','Ccirc':'\u0108','Cconint':'\u2230','ccups':'\u2A4C','ccupssm':'\u2A50','cdot':'\u010B','Cdot':'\u010A','cedil':'\xB8','Cedilla':'\xB8','cemptyv':'\u29B2','cent':'\xA2','centerdot':'\xB7','CenterDot':'\xB7','cfr':'\uD835\uDD20','Cfr':'\u212D','chcy':'\u0447','CHcy':'\u0427','check':'\u2713','checkmark':'\u2713','chi':'\u03C7','Chi':'\u03A7','cir':'\u25CB','circ':'\u02C6','circeq':'\u2257','circlearrowleft':'\u21BA','circlearrowright':'\u21BB','circledast':'\u229B','circledcirc':'\u229A','circleddash':'\u229D','CircleDot':'\u2299','circledR':'\xAE','circledS':'\u24C8','CircleMinus':'\u2296','CirclePlus':'\u2295','CircleTimes':'\u2297','cire':'\u2257','cirE':'\u29C3','cirfnint':'\u2A10','cirmid':'\u2AEF','cirscir':'\u29C2','ClockwiseContourIntegral':'\u2232','CloseCurlyDoubleQuote':'\u201D','CloseCurlyQuote':'\u2019','clubs':'\u2663','clubsuit':'\u2663','colon':':','Colon':'\u2237','colone':'\u2254','Colone':'\u2A74','coloneq':'\u2254','comma':',','commat':'@','comp':'\u2201','compfn':'\u2218','complement':'\u2201','complexes':'\u2102','cong':'\u2245','congdot':'\u2A6D','Congruent':'\u2261','conint':'\u222E','Conint':'\u222F','ContourIntegral':'\u222E','copf':'\uD835\uDD54','Copf':'\u2102','coprod':'\u2210','Coproduct':'\u2210','copy':'\xA9','COPY':'\xA9','copysr':'\u2117','CounterClockwiseContourIntegral':'\u2233','crarr':'\u21B5','cross':'\u2717','Cross':'\u2A2F','cscr':'\uD835\uDCB8','Cscr':'\uD835\uDC9E','csub':'\u2ACF','csube':'\u2AD1','csup':'\u2AD0','csupe':'\u2AD2','ctdot':'\u22EF','cudarrl':'\u2938','cudarrr':'\u2935','cuepr':'\u22DE','cuesc':'\u22DF','cularr':'\u21B6','cularrp':'\u293D','cup':'\u222A','Cup':'\u22D3','cupbrcap':'\u2A48','cupcap':'\u2A46','CupCap':'\u224D','cupcup':'\u2A4A','cupdot':'\u228D','cupor':'\u2A45','cups':'\u222A\uFE00','curarr':'\u21B7','curarrm':'\u293C','curlyeqprec':'\u22DE','curlyeqsucc':'\u22DF','curlyvee':'\u22CE','curlywedge':'\u22CF','curren':'\xA4','curvearrowleft':'\u21B6','curvearrowright':'\u21B7','cuvee':'\u22CE','cuwed':'\u22CF','cwconint':'\u2232','cwint':'\u2231','cylcty':'\u232D','dagger':'\u2020','Dagger':'\u2021','daleth':'\u2138','darr':'\u2193','dArr':'\u21D3','Darr':'\u21A1','dash':'\u2010','dashv':'\u22A3','Dashv':'\u2AE4','dbkarow':'\u290F','dblac':'\u02DD','dcaron':'\u010F','Dcaron':'\u010E','dcy':'\u0434','Dcy':'\u0414','dd':'\u2146','DD':'\u2145','ddagger':'\u2021','ddarr':'\u21CA','DDotrahd':'\u2911','ddotseq':'\u2A77','deg':'\xB0','Del':'\u2207','delta':'\u03B4','Delta':'\u0394','demptyv':'\u29B1','dfisht':'\u297F','dfr':'\uD835\uDD21','Dfr':'\uD835\uDD07','dHar':'\u2965','dharl':'\u21C3','dharr':'\u21C2','DiacriticalAcute':'\xB4','DiacriticalDot':'\u02D9','DiacriticalDoubleAcute':'\u02DD','DiacriticalGrave':'`','DiacriticalTilde':'\u02DC','diam':'\u22C4','diamond':'\u22C4','Diamond':'\u22C4','diamondsuit':'\u2666','diams':'\u2666','die':'\xA8','DifferentialD':'\u2146','digamma':'\u03DD','disin':'\u22F2','div':'\xF7','divide':'\xF7','divideontimes':'\u22C7','divonx':'\u22C7','djcy':'\u0452','DJcy':'\u0402','dlcorn':'\u231E','dlcrop':'\u230D','dollar':'$','dopf':'\uD835\uDD55','Dopf':'\uD835\uDD3B','dot':'\u02D9','Dot':'\xA8','DotDot':'\u20DC','doteq':'\u2250','doteqdot':'\u2251','DotEqual':'\u2250','dotminus':'\u2238','dotplus':'\u2214','dotsquare':'\u22A1','doublebarwedge':'\u2306','DoubleContourIntegral':'\u222F','DoubleDot':'\xA8','DoubleDownArrow':'\u21D3','DoubleLeftArrow':'\u21D0','DoubleLeftRightArrow':'\u21D4','DoubleLeftTee':'\u2AE4','DoubleLongLeftArrow':'\u27F8','DoubleLongLeftRightArrow':'\u27FA','DoubleLongRightArrow':'\u27F9','DoubleRightArrow':'\u21D2','DoubleRightTee':'\u22A8','DoubleUpArrow':'\u21D1','DoubleUpDownArrow':'\u21D5','DoubleVerticalBar':'\u2225','downarrow':'\u2193','Downarrow':'\u21D3','DownArrow':'\u2193','DownArrowBar':'\u2913','DownArrowUpArrow':'\u21F5','DownBreve':'\u0311','downdownarrows':'\u21CA','downharpoonleft':'\u21C3','downharpoonright':'\u21C2','DownLeftRightVector':'\u2950','DownLeftTeeVector':'\u295E','DownLeftVector':'\u21BD','DownLeftVectorBar':'\u2956','DownRightTeeVector':'\u295F','DownRightVector':'\u21C1','DownRightVectorBar':'\u2957','DownTee':'\u22A4','DownTeeArrow':'\u21A7','drbkarow':'\u2910','drcorn':'\u231F','drcrop':'\u230C','dscr':'\uD835\uDCB9','Dscr':'\uD835\uDC9F','dscy':'\u0455','DScy':'\u0405','dsol':'\u29F6','dstrok':'\u0111','Dstrok':'\u0110','dtdot':'\u22F1','dtri':'\u25BF','dtrif':'\u25BE','duarr':'\u21F5','duhar':'\u296F','dwangle':'\u29A6','dzcy':'\u045F','DZcy':'\u040F','dzigrarr':'\u27FF','eacute':'\xE9','Eacute':'\xC9','easter':'\u2A6E','ecaron':'\u011B','Ecaron':'\u011A','ecir':'\u2256','ecirc':'\xEA','Ecirc':'\xCA','ecolon':'\u2255','ecy':'\u044D','Ecy':'\u042D','eDDot':'\u2A77','edot':'\u0117','eDot':'\u2251','Edot':'\u0116','ee':'\u2147','efDot':'\u2252','efr':'\uD835\uDD22','Efr':'\uD835\uDD08','eg':'\u2A9A','egrave':'\xE8','Egrave':'\xC8','egs':'\u2A96','egsdot':'\u2A98','el':'\u2A99','Element':'\u2208','elinters':'\u23E7','ell':'\u2113','els':'\u2A95','elsdot':'\u2A97','emacr':'\u0113','Emacr':'\u0112','empty':'\u2205','emptyset':'\u2205','EmptySmallSquare':'\u25FB','emptyv':'\u2205','EmptyVerySmallSquare':'\u25AB','emsp':'\u2003','emsp13':'\u2004','emsp14':'\u2005','eng':'\u014B','ENG':'\u014A','ensp':'\u2002','eogon':'\u0119','Eogon':'\u0118','eopf':'\uD835\uDD56','Eopf':'\uD835\uDD3C','epar':'\u22D5','eparsl':'\u29E3','eplus':'\u2A71','epsi':'\u03B5','epsilon':'\u03B5','Epsilon':'\u0395','epsiv':'\u03F5','eqcirc':'\u2256','eqcolon':'\u2255','eqsim':'\u2242','eqslantgtr':'\u2A96','eqslantless':'\u2A95','Equal':'\u2A75','equals':'=','EqualTilde':'\u2242','equest':'\u225F','Equilibrium':'\u21CC','equiv':'\u2261','equivDD':'\u2A78','eqvparsl':'\u29E5','erarr':'\u2971','erDot':'\u2253','escr':'\u212F','Escr':'\u2130','esdot':'\u2250','esim':'\u2242','Esim':'\u2A73','eta':'\u03B7','Eta':'\u0397','eth':'\xF0','ETH':'\xD0','euml':'\xEB','Euml':'\xCB','euro':'\u20AC','excl':'!','exist':'\u2203','Exists':'\u2203','expectation':'\u2130','exponentiale':'\u2147','ExponentialE':'\u2147','fallingdotseq':'\u2252','fcy':'\u0444','Fcy':'\u0424','female':'\u2640','ffilig':'\uFB03','fflig':'\uFB00','ffllig':'\uFB04','ffr':'\uD835\uDD23','Ffr':'\uD835\uDD09','filig':'\uFB01','FilledSmallSquare':'\u25FC','FilledVerySmallSquare':'\u25AA','fjlig':'fj','flat':'\u266D','fllig':'\uFB02','fltns':'\u25B1','fnof':'\u0192','fopf':'\uD835\uDD57','Fopf':'\uD835\uDD3D','forall':'\u2200','ForAll':'\u2200','fork':'\u22D4','forkv':'\u2AD9','Fouriertrf':'\u2131','fpartint':'\u2A0D','frac12':'\xBD','frac13':'\u2153','frac14':'\xBC','frac15':'\u2155','frac16':'\u2159','frac18':'\u215B','frac23':'\u2154','frac25':'\u2156','frac34':'\xBE','frac35':'\u2157','frac38':'\u215C','frac45':'\u2158','frac56':'\u215A','frac58':'\u215D','frac78':'\u215E','frasl':'\u2044','frown':'\u2322','fscr':'\uD835\uDCBB','Fscr':'\u2131','gacute':'\u01F5','gamma':'\u03B3','Gamma':'\u0393','gammad':'\u03DD','Gammad':'\u03DC','gap':'\u2A86','gbreve':'\u011F','Gbreve':'\u011E','Gcedil':'\u0122','gcirc':'\u011D','Gcirc':'\u011C','gcy':'\u0433','Gcy':'\u0413','gdot':'\u0121','Gdot':'\u0120','ge':'\u2265','gE':'\u2267','gel':'\u22DB','gEl':'\u2A8C','geq':'\u2265','geqq':'\u2267','geqslant':'\u2A7E','ges':'\u2A7E','gescc':'\u2AA9','gesdot':'\u2A80','gesdoto':'\u2A82','gesdotol':'\u2A84','gesl':'\u22DB\uFE00','gesles':'\u2A94','gfr':'\uD835\uDD24','Gfr':'\uD835\uDD0A','gg':'\u226B','Gg':'\u22D9','ggg':'\u22D9','gimel':'\u2137','gjcy':'\u0453','GJcy':'\u0403','gl':'\u2277','gla':'\u2AA5','glE':'\u2A92','glj':'\u2AA4','gnap':'\u2A8A','gnapprox':'\u2A8A','gne':'\u2A88','gnE':'\u2269','gneq':'\u2A88','gneqq':'\u2269','gnsim':'\u22E7','gopf':'\uD835\uDD58','Gopf':'\uD835\uDD3E','grave':'`','GreaterEqual':'\u2265','GreaterEqualLess':'\u22DB','GreaterFullEqual':'\u2267','GreaterGreater':'\u2AA2','GreaterLess':'\u2277','GreaterSlantEqual':'\u2A7E','GreaterTilde':'\u2273','gscr':'\u210A','Gscr':'\uD835\uDCA2','gsim':'\u2273','gsime':'\u2A8E','gsiml':'\u2A90','gt':'>','Gt':'\u226B','GT':'>','gtcc':'\u2AA7','gtcir':'\u2A7A','gtdot':'\u22D7','gtlPar':'\u2995','gtquest':'\u2A7C','gtrapprox':'\u2A86','gtrarr':'\u2978','gtrdot':'\u22D7','gtreqless':'\u22DB','gtreqqless':'\u2A8C','gtrless':'\u2277','gtrsim':'\u2273','gvertneqq':'\u2269\uFE00','gvnE':'\u2269\uFE00','Hacek':'\u02C7','hairsp':'\u200A','half':'\xBD','hamilt':'\u210B','hardcy':'\u044A','HARDcy':'\u042A','harr':'\u2194','hArr':'\u21D4','harrcir':'\u2948','harrw':'\u21AD','Hat':'^','hbar':'\u210F','hcirc':'\u0125','Hcirc':'\u0124','hearts':'\u2665','heartsuit':'\u2665','hellip':'\u2026','hercon':'\u22B9','hfr':'\uD835\uDD25','Hfr':'\u210C','HilbertSpace':'\u210B','hksearow':'\u2925','hkswarow':'\u2926','hoarr':'\u21FF','homtht':'\u223B','hookleftarrow':'\u21A9','hookrightarrow':'\u21AA','hopf':'\uD835\uDD59','Hopf':'\u210D','horbar':'\u2015','HorizontalLine':'\u2500','hscr':'\uD835\uDCBD','Hscr':'\u210B','hslash':'\u210F','hstrok':'\u0127','Hstrok':'\u0126','HumpDownHump':'\u224E','HumpEqual':'\u224F','hybull':'\u2043','hyphen':'\u2010','iacute':'\xED','Iacute':'\xCD','ic':'\u2063','icirc':'\xEE','Icirc':'\xCE','icy':'\u0438','Icy':'\u0418','Idot':'\u0130','iecy':'\u0435','IEcy':'\u0415','iexcl':'\xA1','iff':'\u21D4','ifr':'\uD835\uDD26','Ifr':'\u2111','igrave':'\xEC','Igrave':'\xCC','ii':'\u2148','iiiint':'\u2A0C','iiint':'\u222D','iinfin':'\u29DC','iiota':'\u2129','ijlig':'\u0133','IJlig':'\u0132','Im':'\u2111','imacr':'\u012B','Imacr':'\u012A','image':'\u2111','ImaginaryI':'\u2148','imagline':'\u2110','imagpart':'\u2111','imath':'\u0131','imof':'\u22B7','imped':'\u01B5','Implies':'\u21D2','in':'\u2208','incare':'\u2105','infin':'\u221E','infintie':'\u29DD','inodot':'\u0131','int':'\u222B','Int':'\u222C','intcal':'\u22BA','integers':'\u2124','Integral':'\u222B','intercal':'\u22BA','Intersection':'\u22C2','intlarhk':'\u2A17','intprod':'\u2A3C','InvisibleComma':'\u2063','InvisibleTimes':'\u2062','iocy':'\u0451','IOcy':'\u0401','iogon':'\u012F','Iogon':'\u012E','iopf':'\uD835\uDD5A','Iopf':'\uD835\uDD40','iota':'\u03B9','Iota':'\u0399','iprod':'\u2A3C','iquest':'\xBF','iscr':'\uD835\uDCBE','Iscr':'\u2110','isin':'\u2208','isindot':'\u22F5','isinE':'\u22F9','isins':'\u22F4','isinsv':'\u22F3','isinv':'\u2208','it':'\u2062','itilde':'\u0129','Itilde':'\u0128','iukcy':'\u0456','Iukcy':'\u0406','iuml':'\xEF','Iuml':'\xCF','jcirc':'\u0135','Jcirc':'\u0134','jcy':'\u0439','Jcy':'\u0419','jfr':'\uD835\uDD27','Jfr':'\uD835\uDD0D','jmath':'\u0237','jopf':'\uD835\uDD5B','Jopf':'\uD835\uDD41','jscr':'\uD835\uDCBF','Jscr':'\uD835\uDCA5','jsercy':'\u0458','Jsercy':'\u0408','jukcy':'\u0454','Jukcy':'\u0404','kappa':'\u03BA','Kappa':'\u039A','kappav':'\u03F0','kcedil':'\u0137','Kcedil':'\u0136','kcy':'\u043A','Kcy':'\u041A','kfr':'\uD835\uDD28','Kfr':'\uD835\uDD0E','kgreen':'\u0138','khcy':'\u0445','KHcy':'\u0425','kjcy':'\u045C','KJcy':'\u040C','kopf':'\uD835\uDD5C','Kopf':'\uD835\uDD42','kscr':'\uD835\uDCC0','Kscr':'\uD835\uDCA6','lAarr':'\u21DA','lacute':'\u013A','Lacute':'\u0139','laemptyv':'\u29B4','lagran':'\u2112','lambda':'\u03BB','Lambda':'\u039B','lang':'\u27E8','Lang':'\u27EA','langd':'\u2991','langle':'\u27E8','lap':'\u2A85','Laplacetrf':'\u2112','laquo':'\xAB','larr':'\u2190','lArr':'\u21D0','Larr':'\u219E','larrb':'\u21E4','larrbfs':'\u291F','larrfs':'\u291D','larrhk':'\u21A9','larrlp':'\u21AB','larrpl':'\u2939','larrsim':'\u2973','larrtl':'\u21A2','lat':'\u2AAB','latail':'\u2919','lAtail':'\u291B','late':'\u2AAD','lates':'\u2AAD\uFE00','lbarr':'\u290C','lBarr':'\u290E','lbbrk':'\u2772','lbrace':'{','lbrack':'[','lbrke':'\u298B','lbrksld':'\u298F','lbrkslu':'\u298D','lcaron':'\u013E','Lcaron':'\u013D','lcedil':'\u013C','Lcedil':'\u013B','lceil':'\u2308','lcub':'{','lcy':'\u043B','Lcy':'\u041B','ldca':'\u2936','ldquo':'\u201C','ldquor':'\u201E','ldrdhar':'\u2967','ldrushar':'\u294B','ldsh':'\u21B2','le':'\u2264','lE':'\u2266','LeftAngleBracket':'\u27E8','leftarrow':'\u2190','Leftarrow':'\u21D0','LeftArrow':'\u2190','LeftArrowBar':'\u21E4','LeftArrowRightArrow':'\u21C6','leftarrowtail':'\u21A2','LeftCeiling':'\u2308','LeftDoubleBracket':'\u27E6','LeftDownTeeVector':'\u2961','LeftDownVector':'\u21C3','LeftDownVectorBar':'\u2959','LeftFloor':'\u230A','leftharpoondown':'\u21BD','leftharpoonup':'\u21BC','leftleftarrows':'\u21C7','leftrightarrow':'\u2194','Leftrightarrow':'\u21D4','LeftRightArrow':'\u2194','leftrightarrows':'\u21C6','leftrightharpoons':'\u21CB','leftrightsquigarrow':'\u21AD','LeftRightVector':'\u294E','LeftTee':'\u22A3','LeftTeeArrow':'\u21A4','LeftTeeVector':'\u295A','leftthreetimes':'\u22CB','LeftTriangle':'\u22B2','LeftTriangleBar':'\u29CF','LeftTriangleEqual':'\u22B4','LeftUpDownVector':'\u2951','LeftUpTeeVector':'\u2960','LeftUpVector':'\u21BF','LeftUpVectorBar':'\u2958','LeftVector':'\u21BC','LeftVectorBar':'\u2952','leg':'\u22DA','lEg':'\u2A8B','leq':'\u2264','leqq':'\u2266','leqslant':'\u2A7D','les':'\u2A7D','lescc':'\u2AA8','lesdot':'\u2A7F','lesdoto':'\u2A81','lesdotor':'\u2A83','lesg':'\u22DA\uFE00','lesges':'\u2A93','lessapprox':'\u2A85','lessdot':'\u22D6','lesseqgtr':'\u22DA','lesseqqgtr':'\u2A8B','LessEqualGreater':'\u22DA','LessFullEqual':'\u2266','LessGreater':'\u2276','lessgtr':'\u2276','LessLess':'\u2AA1','lesssim':'\u2272','LessSlantEqual':'\u2A7D','LessTilde':'\u2272','lfisht':'\u297C','lfloor':'\u230A','lfr':'\uD835\uDD29','Lfr':'\uD835\uDD0F','lg':'\u2276','lgE':'\u2A91','lHar':'\u2962','lhard':'\u21BD','lharu':'\u21BC','lharul':'\u296A','lhblk':'\u2584','ljcy':'\u0459','LJcy':'\u0409','ll':'\u226A','Ll':'\u22D8','llarr':'\u21C7','llcorner':'\u231E','Lleftarrow':'\u21DA','llhard':'\u296B','lltri':'\u25FA','lmidot':'\u0140','Lmidot':'\u013F','lmoust':'\u23B0','lmoustache':'\u23B0','lnap':'\u2A89','lnapprox':'\u2A89','lne':'\u2A87','lnE':'\u2268','lneq':'\u2A87','lneqq':'\u2268','lnsim':'\u22E6','loang':'\u27EC','loarr':'\u21FD','lobrk':'\u27E6','longleftarrow':'\u27F5','Longleftarrow':'\u27F8','LongLeftArrow':'\u27F5','longleftrightarrow':'\u27F7','Longleftrightarrow':'\u27FA','LongLeftRightArrow':'\u27F7','longmapsto':'\u27FC','longrightarrow':'\u27F6','Longrightarrow':'\u27F9','LongRightArrow':'\u27F6','looparrowleft':'\u21AB','looparrowright':'\u21AC','lopar':'\u2985','lopf':'\uD835\uDD5D','Lopf':'\uD835\uDD43','loplus':'\u2A2D','lotimes':'\u2A34','lowast':'\u2217','lowbar':'_','LowerLeftArrow':'\u2199','LowerRightArrow':'\u2198','loz':'\u25CA','lozenge':'\u25CA','lozf':'\u29EB','lpar':'(','lparlt':'\u2993','lrarr':'\u21C6','lrcorner':'\u231F','lrhar':'\u21CB','lrhard':'\u296D','lrm':'\u200E','lrtri':'\u22BF','lsaquo':'\u2039','lscr':'\uD835\uDCC1','Lscr':'\u2112','lsh':'\u21B0','Lsh':'\u21B0','lsim':'\u2272','lsime':'\u2A8D','lsimg':'\u2A8F','lsqb':'[','lsquo':'\u2018','lsquor':'\u201A','lstrok':'\u0142','Lstrok':'\u0141','lt':'<','Lt':'\u226A','LT':'<','ltcc':'\u2AA6','ltcir':'\u2A79','ltdot':'\u22D6','lthree':'\u22CB','ltimes':'\u22C9','ltlarr':'\u2976','ltquest':'\u2A7B','ltri':'\u25C3','ltrie':'\u22B4','ltrif':'\u25C2','ltrPar':'\u2996','lurdshar':'\u294A','luruhar':'\u2966','lvertneqq':'\u2268\uFE00','lvnE':'\u2268\uFE00','macr':'\xAF','male':'\u2642','malt':'\u2720','maltese':'\u2720','map':'\u21A6','Map':'\u2905','mapsto':'\u21A6','mapstodown':'\u21A7','mapstoleft':'\u21A4','mapstoup':'\u21A5','marker':'\u25AE','mcomma':'\u2A29','mcy':'\u043C','Mcy':'\u041C','mdash':'\u2014','mDDot':'\u223A','measuredangle':'\u2221','MediumSpace':'\u205F','Mellintrf':'\u2133','mfr':'\uD835\uDD2A','Mfr':'\uD835\uDD10','mho':'\u2127','micro':'\xB5','mid':'\u2223','midast':'*','midcir':'\u2AF0','middot':'\xB7','minus':'\u2212','minusb':'\u229F','minusd':'\u2238','minusdu':'\u2A2A','MinusPlus':'\u2213','mlcp':'\u2ADB','mldr':'\u2026','mnplus':'\u2213','models':'\u22A7','mopf':'\uD835\uDD5E','Mopf':'\uD835\uDD44','mp':'\u2213','mscr':'\uD835\uDCC2','Mscr':'\u2133','mstpos':'\u223E','mu':'\u03BC','Mu':'\u039C','multimap':'\u22B8','mumap':'\u22B8','nabla':'\u2207','nacute':'\u0144','Nacute':'\u0143','nang':'\u2220\u20D2','nap':'\u2249','napE':'\u2A70\u0338','napid':'\u224B\u0338','napos':'\u0149','napprox':'\u2249','natur':'\u266E','natural':'\u266E','naturals':'\u2115','nbsp':'\xA0','nbump':'\u224E\u0338','nbumpe':'\u224F\u0338','ncap':'\u2A43','ncaron':'\u0148','Ncaron':'\u0147','ncedil':'\u0146','Ncedil':'\u0145','ncong':'\u2247','ncongdot':'\u2A6D\u0338','ncup':'\u2A42','ncy':'\u043D','Ncy':'\u041D','ndash':'\u2013','ne':'\u2260','nearhk':'\u2924','nearr':'\u2197','neArr':'\u21D7','nearrow':'\u2197','nedot':'\u2250\u0338','NegativeMediumSpace':'\u200B','NegativeThickSpace':'\u200B','NegativeThinSpace':'\u200B','NegativeVeryThinSpace':'\u200B','nequiv':'\u2262','nesear':'\u2928','nesim':'\u2242\u0338','NestedGreaterGreater':'\u226B','NestedLessLess':'\u226A','NewLine':'\n','nexist':'\u2204','nexists':'\u2204','nfr':'\uD835\uDD2B','Nfr':'\uD835\uDD11','nge':'\u2271','ngE':'\u2267\u0338','ngeq':'\u2271','ngeqq':'\u2267\u0338','ngeqslant':'\u2A7E\u0338','nges':'\u2A7E\u0338','nGg':'\u22D9\u0338','ngsim':'\u2275','ngt':'\u226F','nGt':'\u226B\u20D2','ngtr':'\u226F','nGtv':'\u226B\u0338','nharr':'\u21AE','nhArr':'\u21CE','nhpar':'\u2AF2','ni':'\u220B','nis':'\u22FC','nisd':'\u22FA','niv':'\u220B','njcy':'\u045A','NJcy':'\u040A','nlarr':'\u219A','nlArr':'\u21CD','nldr':'\u2025','nle':'\u2270','nlE':'\u2266\u0338','nleftarrow':'\u219A','nLeftarrow':'\u21CD','nleftrightarrow':'\u21AE','nLeftrightarrow':'\u21CE','nleq':'\u2270','nleqq':'\u2266\u0338','nleqslant':'\u2A7D\u0338','nles':'\u2A7D\u0338','nless':'\u226E','nLl':'\u22D8\u0338','nlsim':'\u2274','nlt':'\u226E','nLt':'\u226A\u20D2','nltri':'\u22EA','nltrie':'\u22EC','nLtv':'\u226A\u0338','nmid':'\u2224','NoBreak':'\u2060','NonBreakingSpace':'\xA0','nopf':'\uD835\uDD5F','Nopf':'\u2115','not':'\xAC','Not':'\u2AEC','NotCongruent':'\u2262','NotCupCap':'\u226D','NotDoubleVerticalBar':'\u2226','NotElement':'\u2209','NotEqual':'\u2260','NotEqualTilde':'\u2242\u0338','NotExists':'\u2204','NotGreater':'\u226F','NotGreaterEqual':'\u2271','NotGreaterFullEqual':'\u2267\u0338','NotGreaterGreater':'\u226B\u0338','NotGreaterLess':'\u2279','NotGreaterSlantEqual':'\u2A7E\u0338','NotGreaterTilde':'\u2275','NotHumpDownHump':'\u224E\u0338','NotHumpEqual':'\u224F\u0338','notin':'\u2209','notindot':'\u22F5\u0338','notinE':'\u22F9\u0338','notinva':'\u2209','notinvb':'\u22F7','notinvc':'\u22F6','NotLeftTriangle':'\u22EA','NotLeftTriangleBar':'\u29CF\u0338','NotLeftTriangleEqual':'\u22EC','NotLess':'\u226E','NotLessEqual':'\u2270','NotLessGreater':'\u2278','NotLessLess':'\u226A\u0338','NotLessSlantEqual':'\u2A7D\u0338','NotLessTilde':'\u2274','NotNestedGreaterGreater':'\u2AA2\u0338','NotNestedLessLess':'\u2AA1\u0338','notni':'\u220C','notniva':'\u220C','notnivb':'\u22FE','notnivc':'\u22FD','NotPrecedes':'\u2280','NotPrecedesEqual':'\u2AAF\u0338','NotPrecedesSlantEqual':'\u22E0','NotReverseElement':'\u220C','NotRightTriangle':'\u22EB','NotRightTriangleBar':'\u29D0\u0338','NotRightTriangleEqual':'\u22ED','NotSquareSubset':'\u228F\u0338','NotSquareSubsetEqual':'\u22E2','NotSquareSuperset':'\u2290\u0338','NotSquareSupersetEqual':'\u22E3','NotSubset':'\u2282\u20D2','NotSubsetEqual':'\u2288','NotSucceeds':'\u2281','NotSucceedsEqual':'\u2AB0\u0338','NotSucceedsSlantEqual':'\u22E1','NotSucceedsTilde':'\u227F\u0338','NotSuperset':'\u2283\u20D2','NotSupersetEqual':'\u2289','NotTilde':'\u2241','NotTildeEqual':'\u2244','NotTildeFullEqual':'\u2247','NotTildeTilde':'\u2249','NotVerticalBar':'\u2224','npar':'\u2226','nparallel':'\u2226','nparsl':'\u2AFD\u20E5','npart':'\u2202\u0338','npolint':'\u2A14','npr':'\u2280','nprcue':'\u22E0','npre':'\u2AAF\u0338','nprec':'\u2280','npreceq':'\u2AAF\u0338','nrarr':'\u219B','nrArr':'\u21CF','nrarrc':'\u2933\u0338','nrarrw':'\u219D\u0338','nrightarrow':'\u219B','nRightarrow':'\u21CF','nrtri':'\u22EB','nrtrie':'\u22ED','nsc':'\u2281','nsccue':'\u22E1','nsce':'\u2AB0\u0338','nscr':'\uD835\uDCC3','Nscr':'\uD835\uDCA9','nshortmid':'\u2224','nshortparallel':'\u2226','nsim':'\u2241','nsime':'\u2244','nsimeq':'\u2244','nsmid':'\u2224','nspar':'\u2226','nsqsube':'\u22E2','nsqsupe':'\u22E3','nsub':'\u2284','nsube':'\u2288','nsubE':'\u2AC5\u0338','nsubset':'\u2282\u20D2','nsubseteq':'\u2288','nsubseteqq':'\u2AC5\u0338','nsucc':'\u2281','nsucceq':'\u2AB0\u0338','nsup':'\u2285','nsupe':'\u2289','nsupE':'\u2AC6\u0338','nsupset':'\u2283\u20D2','nsupseteq':'\u2289','nsupseteqq':'\u2AC6\u0338','ntgl':'\u2279','ntilde':'\xF1','Ntilde':'\xD1','ntlg':'\u2278','ntriangleleft':'\u22EA','ntrianglelefteq':'\u22EC','ntriangleright':'\u22EB','ntrianglerighteq':'\u22ED','nu':'\u03BD','Nu':'\u039D','num':'#','numero':'\u2116','numsp':'\u2007','nvap':'\u224D\u20D2','nvdash':'\u22AC','nvDash':'\u22AD','nVdash':'\u22AE','nVDash':'\u22AF','nvge':'\u2265\u20D2','nvgt':'>\u20D2','nvHarr':'\u2904','nvinfin':'\u29DE','nvlArr':'\u2902','nvle':'\u2264\u20D2','nvlt':'<\u20D2','nvltrie':'\u22B4\u20D2','nvrArr':'\u2903','nvrtrie':'\u22B5\u20D2','nvsim':'\u223C\u20D2','nwarhk':'\u2923','nwarr':'\u2196','nwArr':'\u21D6','nwarrow':'\u2196','nwnear':'\u2927','oacute':'\xF3','Oacute':'\xD3','oast':'\u229B','ocir':'\u229A','ocirc':'\xF4','Ocirc':'\xD4','ocy':'\u043E','Ocy':'\u041E','odash':'\u229D','odblac':'\u0151','Odblac':'\u0150','odiv':'\u2A38','odot':'\u2299','odsold':'\u29BC','oelig':'\u0153','OElig':'\u0152','ofcir':'\u29BF','ofr':'\uD835\uDD2C','Ofr':'\uD835\uDD12','ogon':'\u02DB','ograve':'\xF2','Ograve':'\xD2','ogt':'\u29C1','ohbar':'\u29B5','ohm':'\u03A9','oint':'\u222E','olarr':'\u21BA','olcir':'\u29BE','olcross':'\u29BB','oline':'\u203E','olt':'\u29C0','omacr':'\u014D','Omacr':'\u014C','omega':'\u03C9','Omega':'\u03A9','omicron':'\u03BF','Omicron':'\u039F','omid':'\u29B6','ominus':'\u2296','oopf':'\uD835\uDD60','Oopf':'\uD835\uDD46','opar':'\u29B7','OpenCurlyDoubleQuote':'\u201C','OpenCurlyQuote':'\u2018','operp':'\u29B9','oplus':'\u2295','or':'\u2228','Or':'\u2A54','orarr':'\u21BB','ord':'\u2A5D','order':'\u2134','orderof':'\u2134','ordf':'\xAA','ordm':'\xBA','origof':'\u22B6','oror':'\u2A56','orslope':'\u2A57','orv':'\u2A5B','oS':'\u24C8','oscr':'\u2134','Oscr':'\uD835\uDCAA','oslash':'\xF8','Oslash':'\xD8','osol':'\u2298','otilde':'\xF5','Otilde':'\xD5','otimes':'\u2297','Otimes':'\u2A37','otimesas':'\u2A36','ouml':'\xF6','Ouml':'\xD6','ovbar':'\u233D','OverBar':'\u203E','OverBrace':'\u23DE','OverBracket':'\u23B4','OverParenthesis':'\u23DC','par':'\u2225','para':'\xB6','parallel':'\u2225','parsim':'\u2AF3','parsl':'\u2AFD','part':'\u2202','PartialD':'\u2202','pcy':'\u043F','Pcy':'\u041F','percnt':'%','period':'.','permil':'\u2030','perp':'\u22A5','pertenk':'\u2031','pfr':'\uD835\uDD2D','Pfr':'\uD835\uDD13','phi':'\u03C6','Phi':'\u03A6','phiv':'\u03D5','phmmat':'\u2133','phone':'\u260E','pi':'\u03C0','Pi':'\u03A0','pitchfork':'\u22D4','piv':'\u03D6','planck':'\u210F','planckh':'\u210E','plankv':'\u210F','plus':'+','plusacir':'\u2A23','plusb':'\u229E','pluscir':'\u2A22','plusdo':'\u2214','plusdu':'\u2A25','pluse':'\u2A72','PlusMinus':'\xB1','plusmn':'\xB1','plussim':'\u2A26','plustwo':'\u2A27','pm':'\xB1','Poincareplane':'\u210C','pointint':'\u2A15','popf':'\uD835\uDD61','Popf':'\u2119','pound':'\xA3','pr':'\u227A','Pr':'\u2ABB','prap':'\u2AB7','prcue':'\u227C','pre':'\u2AAF','prE':'\u2AB3','prec':'\u227A','precapprox':'\u2AB7','preccurlyeq':'\u227C','Precedes':'\u227A','PrecedesEqual':'\u2AAF','PrecedesSlantEqual':'\u227C','PrecedesTilde':'\u227E','preceq':'\u2AAF','precnapprox':'\u2AB9','precneqq':'\u2AB5','precnsim':'\u22E8','precsim':'\u227E','prime':'\u2032','Prime':'\u2033','primes':'\u2119','prnap':'\u2AB9','prnE':'\u2AB5','prnsim':'\u22E8','prod':'\u220F','Product':'\u220F','profalar':'\u232E','profline':'\u2312','profsurf':'\u2313','prop':'\u221D','Proportion':'\u2237','Proportional':'\u221D','propto':'\u221D','prsim':'\u227E','prurel':'\u22B0','pscr':'\uD835\uDCC5','Pscr':'\uD835\uDCAB','psi':'\u03C8','Psi':'\u03A8','puncsp':'\u2008','qfr':'\uD835\uDD2E','Qfr':'\uD835\uDD14','qint':'\u2A0C','qopf':'\uD835\uDD62','Qopf':'\u211A','qprime':'\u2057','qscr':'\uD835\uDCC6','Qscr':'\uD835\uDCAC','quaternions':'\u210D','quatint':'\u2A16','quest':'?','questeq':'\u225F','quot':'"','QUOT':'"','rAarr':'\u21DB','race':'\u223D\u0331','racute':'\u0155','Racute':'\u0154','radic':'\u221A','raemptyv':'\u29B3','rang':'\u27E9','Rang':'\u27EB','rangd':'\u2992','range':'\u29A5','rangle':'\u27E9','raquo':'\xBB','rarr':'\u2192','rArr':'\u21D2','Rarr':'\u21A0','rarrap':'\u2975','rarrb':'\u21E5','rarrbfs':'\u2920','rarrc':'\u2933','rarrfs':'\u291E','rarrhk':'\u21AA','rarrlp':'\u21AC','rarrpl':'\u2945','rarrsim':'\u2974','rarrtl':'\u21A3','Rarrtl':'\u2916','rarrw':'\u219D','ratail':'\u291A','rAtail':'\u291C','ratio':'\u2236','rationals':'\u211A','rbarr':'\u290D','rBarr':'\u290F','RBarr':'\u2910','rbbrk':'\u2773','rbrace':'}','rbrack':']','rbrke':'\u298C','rbrksld':'\u298E','rbrkslu':'\u2990','rcaron':'\u0159','Rcaron':'\u0158','rcedil':'\u0157','Rcedil':'\u0156','rceil':'\u2309','rcub':'}','rcy':'\u0440','Rcy':'\u0420','rdca':'\u2937','rdldhar':'\u2969','rdquo':'\u201D','rdquor':'\u201D','rdsh':'\u21B3','Re':'\u211C','real':'\u211C','realine':'\u211B','realpart':'\u211C','reals':'\u211D','rect':'\u25AD','reg':'\xAE','REG':'\xAE','ReverseElement':'\u220B','ReverseEquilibrium':'\u21CB','ReverseUpEquilibrium':'\u296F','rfisht':'\u297D','rfloor':'\u230B','rfr':'\uD835\uDD2F','Rfr':'\u211C','rHar':'\u2964','rhard':'\u21C1','rharu':'\u21C0','rharul':'\u296C','rho':'\u03C1','Rho':'\u03A1','rhov':'\u03F1','RightAngleBracket':'\u27E9','rightarrow':'\u2192','Rightarrow':'\u21D2','RightArrow':'\u2192','RightArrowBar':'\u21E5','RightArrowLeftArrow':'\u21C4','rightarrowtail':'\u21A3','RightCeiling':'\u2309','RightDoubleBracket':'\u27E7','RightDownTeeVector':'\u295D','RightDownVector':'\u21C2','RightDownVectorBar':'\u2955','RightFloor':'\u230B','rightharpoondown':'\u21C1','rightharpoonup':'\u21C0','rightleftarrows':'\u21C4','rightleftharpoons':'\u21CC','rightrightarrows':'\u21C9','rightsquigarrow':'\u219D','RightTee':'\u22A2','RightTeeArrow':'\u21A6','RightTeeVector':'\u295B','rightthreetimes':'\u22CC','RightTriangle':'\u22B3','RightTriangleBar':'\u29D0','RightTriangleEqual':'\u22B5','RightUpDownVector':'\u294F','RightUpTeeVector':'\u295C','RightUpVector':'\u21BE','RightUpVectorBar':'\u2954','RightVector':'\u21C0','RightVectorBar':'\u2953','ring':'\u02DA','risingdotseq':'\u2253','rlarr':'\u21C4','rlhar':'\u21CC','rlm':'\u200F','rmoust':'\u23B1','rmoustache':'\u23B1','rnmid':'\u2AEE','roang':'\u27ED','roarr':'\u21FE','robrk':'\u27E7','ropar':'\u2986','ropf':'\uD835\uDD63','Ropf':'\u211D','roplus':'\u2A2E','rotimes':'\u2A35','RoundImplies':'\u2970','rpar':')','rpargt':'\u2994','rppolint':'\u2A12','rrarr':'\u21C9','Rrightarrow':'\u21DB','rsaquo':'\u203A','rscr':'\uD835\uDCC7','Rscr':'\u211B','rsh':'\u21B1','Rsh':'\u21B1','rsqb':']','rsquo':'\u2019','rsquor':'\u2019','rthree':'\u22CC','rtimes':'\u22CA','rtri':'\u25B9','rtrie':'\u22B5','rtrif':'\u25B8','rtriltri':'\u29CE','RuleDelayed':'\u29F4','ruluhar':'\u2968','rx':'\u211E','sacute':'\u015B','Sacute':'\u015A','sbquo':'\u201A','sc':'\u227B','Sc':'\u2ABC','scap':'\u2AB8','scaron':'\u0161','Scaron':'\u0160','sccue':'\u227D','sce':'\u2AB0','scE':'\u2AB4','scedil':'\u015F','Scedil':'\u015E','scirc':'\u015D','Scirc':'\u015C','scnap':'\u2ABA','scnE':'\u2AB6','scnsim':'\u22E9','scpolint':'\u2A13','scsim':'\u227F','scy':'\u0441','Scy':'\u0421','sdot':'\u22C5','sdotb':'\u22A1','sdote':'\u2A66','searhk':'\u2925','searr':'\u2198','seArr':'\u21D8','searrow':'\u2198','sect':'\xA7','semi':';','seswar':'\u2929','setminus':'\u2216','setmn':'\u2216','sext':'\u2736','sfr':'\uD835\uDD30','Sfr':'\uD835\uDD16','sfrown':'\u2322','sharp':'\u266F','shchcy':'\u0449','SHCHcy':'\u0429','shcy':'\u0448','SHcy':'\u0428','ShortDownArrow':'\u2193','ShortLeftArrow':'\u2190','shortmid':'\u2223','shortparallel':'\u2225','ShortRightArrow':'\u2192','ShortUpArrow':'\u2191','shy':'\xAD','sigma':'\u03C3','Sigma':'\u03A3','sigmaf':'\u03C2','sigmav':'\u03C2','sim':'\u223C','simdot':'\u2A6A','sime':'\u2243','simeq':'\u2243','simg':'\u2A9E','simgE':'\u2AA0','siml':'\u2A9D','simlE':'\u2A9F','simne':'\u2246','simplus':'\u2A24','simrarr':'\u2972','slarr':'\u2190','SmallCircle':'\u2218','smallsetminus':'\u2216','smashp':'\u2A33','smeparsl':'\u29E4','smid':'\u2223','smile':'\u2323','smt':'\u2AAA','smte':'\u2AAC','smtes':'\u2AAC\uFE00','softcy':'\u044C','SOFTcy':'\u042C','sol':'/','solb':'\u29C4','solbar':'\u233F','sopf':'\uD835\uDD64','Sopf':'\uD835\uDD4A','spades':'\u2660','spadesuit':'\u2660','spar':'\u2225','sqcap':'\u2293','sqcaps':'\u2293\uFE00','sqcup':'\u2294','sqcups':'\u2294\uFE00','Sqrt':'\u221A','sqsub':'\u228F','sqsube':'\u2291','sqsubset':'\u228F','sqsubseteq':'\u2291','sqsup':'\u2290','sqsupe':'\u2292','sqsupset':'\u2290','sqsupseteq':'\u2292','squ':'\u25A1','square':'\u25A1','Square':'\u25A1','SquareIntersection':'\u2293','SquareSubset':'\u228F','SquareSubsetEqual':'\u2291','SquareSuperset':'\u2290','SquareSupersetEqual':'\u2292','SquareUnion':'\u2294','squarf':'\u25AA','squf':'\u25AA','srarr':'\u2192','sscr':'\uD835\uDCC8','Sscr':'\uD835\uDCAE','ssetmn':'\u2216','ssmile':'\u2323','sstarf':'\u22C6','star':'\u2606','Star':'\u22C6','starf':'\u2605','straightepsilon':'\u03F5','straightphi':'\u03D5','strns':'\xAF','sub':'\u2282','Sub':'\u22D0','subdot':'\u2ABD','sube':'\u2286','subE':'\u2AC5','subedot':'\u2AC3','submult':'\u2AC1','subne':'\u228A','subnE':'\u2ACB','subplus':'\u2ABF','subrarr':'\u2979','subset':'\u2282','Subset':'\u22D0','subseteq':'\u2286','subseteqq':'\u2AC5','SubsetEqual':'\u2286','subsetneq':'\u228A','subsetneqq':'\u2ACB','subsim':'\u2AC7','subsub':'\u2AD5','subsup':'\u2AD3','succ':'\u227B','succapprox':'\u2AB8','succcurlyeq':'\u227D','Succeeds':'\u227B','SucceedsEqual':'\u2AB0','SucceedsSlantEqual':'\u227D','SucceedsTilde':'\u227F','succeq':'\u2AB0','succnapprox':'\u2ABA','succneqq':'\u2AB6','succnsim':'\u22E9','succsim':'\u227F','SuchThat':'\u220B','sum':'\u2211','Sum':'\u2211','sung':'\u266A','sup':'\u2283','Sup':'\u22D1','sup1':'\xB9','sup2':'\xB2','sup3':'\xB3','supdot':'\u2ABE','supdsub':'\u2AD8','supe':'\u2287','supE':'\u2AC6','supedot':'\u2AC4','Superset':'\u2283','SupersetEqual':'\u2287','suphsol':'\u27C9','suphsub':'\u2AD7','suplarr':'\u297B','supmult':'\u2AC2','supne':'\u228B','supnE':'\u2ACC','supplus':'\u2AC0','supset':'\u2283','Supset':'\u22D1','supseteq':'\u2287','supseteqq':'\u2AC6','supsetneq':'\u228B','supsetneqq':'\u2ACC','supsim':'\u2AC8','supsub':'\u2AD4','supsup':'\u2AD6','swarhk':'\u2926','swarr':'\u2199','swArr':'\u21D9','swarrow':'\u2199','swnwar':'\u292A','szlig':'\xDF','Tab':'\t','target':'\u2316','tau':'\u03C4','Tau':'\u03A4','tbrk':'\u23B4','tcaron':'\u0165','Tcaron':'\u0164','tcedil':'\u0163','Tcedil':'\u0162','tcy':'\u0442','Tcy':'\u0422','tdot':'\u20DB','telrec':'\u2315','tfr':'\uD835\uDD31','Tfr':'\uD835\uDD17','there4':'\u2234','therefore':'\u2234','Therefore':'\u2234','theta':'\u03B8','Theta':'\u0398','thetasym':'\u03D1','thetav':'\u03D1','thickapprox':'\u2248','thicksim':'\u223C','ThickSpace':'\u205F\u200A','thinsp':'\u2009','ThinSpace':'\u2009','thkap':'\u2248','thksim':'\u223C','thorn':'\xFE','THORN':'\xDE','tilde':'\u02DC','Tilde':'\u223C','TildeEqual':'\u2243','TildeFullEqual':'\u2245','TildeTilde':'\u2248','times':'\xD7','timesb':'\u22A0','timesbar':'\u2A31','timesd':'\u2A30','tint':'\u222D','toea':'\u2928','top':'\u22A4','topbot':'\u2336','topcir':'\u2AF1','topf':'\uD835\uDD65','Topf':'\uD835\uDD4B','topfork':'\u2ADA','tosa':'\u2929','tprime':'\u2034','trade':'\u2122','TRADE':'\u2122','triangle':'\u25B5','triangledown':'\u25BF','triangleleft':'\u25C3','trianglelefteq':'\u22B4','triangleq':'\u225C','triangleright':'\u25B9','trianglerighteq':'\u22B5','tridot':'\u25EC','trie':'\u225C','triminus':'\u2A3A','TripleDot':'\u20DB','triplus':'\u2A39','trisb':'\u29CD','tritime':'\u2A3B','trpezium':'\u23E2','tscr':'\uD835\uDCC9','Tscr':'\uD835\uDCAF','tscy':'\u0446','TScy':'\u0426','tshcy':'\u045B','TSHcy':'\u040B','tstrok':'\u0167','Tstrok':'\u0166','twixt':'\u226C','twoheadleftarrow':'\u219E','twoheadrightarrow':'\u21A0','uacute':'\xFA','Uacute':'\xDA','uarr':'\u2191','uArr':'\u21D1','Uarr':'\u219F','Uarrocir':'\u2949','ubrcy':'\u045E','Ubrcy':'\u040E','ubreve':'\u016D','Ubreve':'\u016C','ucirc':'\xFB','Ucirc':'\xDB','ucy':'\u0443','Ucy':'\u0423','udarr':'\u21C5','udblac':'\u0171','Udblac':'\u0170','udhar':'\u296E','ufisht':'\u297E','ufr':'\uD835\uDD32','Ufr':'\uD835\uDD18','ugrave':'\xF9','Ugrave':'\xD9','uHar':'\u2963','uharl':'\u21BF','uharr':'\u21BE','uhblk':'\u2580','ulcorn':'\u231C','ulcorner':'\u231C','ulcrop':'\u230F','ultri':'\u25F8','umacr':'\u016B','Umacr':'\u016A','uml':'\xA8','UnderBar':'_','UnderBrace':'\u23DF','UnderBracket':'\u23B5','UnderParenthesis':'\u23DD','Union':'\u22C3','UnionPlus':'\u228E','uogon':'\u0173','Uogon':'\u0172','uopf':'\uD835\uDD66','Uopf':'\uD835\uDD4C','uparrow':'\u2191','Uparrow':'\u21D1','UpArrow':'\u2191','UpArrowBar':'\u2912','UpArrowDownArrow':'\u21C5','updownarrow':'\u2195','Updownarrow':'\u21D5','UpDownArrow':'\u2195','UpEquilibrium':'\u296E','upharpoonleft':'\u21BF','upharpoonright':'\u21BE','uplus':'\u228E','UpperLeftArrow':'\u2196','UpperRightArrow':'\u2197','upsi':'\u03C5','Upsi':'\u03D2','upsih':'\u03D2','upsilon':'\u03C5','Upsilon':'\u03A5','UpTee':'\u22A5','UpTeeArrow':'\u21A5','upuparrows':'\u21C8','urcorn':'\u231D','urcorner':'\u231D','urcrop':'\u230E','uring':'\u016F','Uring':'\u016E','urtri':'\u25F9','uscr':'\uD835\uDCCA','Uscr':'\uD835\uDCB0','utdot':'\u22F0','utilde':'\u0169','Utilde':'\u0168','utri':'\u25B5','utrif':'\u25B4','uuarr':'\u21C8','uuml':'\xFC','Uuml':'\xDC','uwangle':'\u29A7','vangrt':'\u299C','varepsilon':'\u03F5','varkappa':'\u03F0','varnothing':'\u2205','varphi':'\u03D5','varpi':'\u03D6','varpropto':'\u221D','varr':'\u2195','vArr':'\u21D5','varrho':'\u03F1','varsigma':'\u03C2','varsubsetneq':'\u228A\uFE00','varsubsetneqq':'\u2ACB\uFE00','varsupsetneq':'\u228B\uFE00','varsupsetneqq':'\u2ACC\uFE00','vartheta':'\u03D1','vartriangleleft':'\u22B2','vartriangleright':'\u22B3','vBar':'\u2AE8','Vbar':'\u2AEB','vBarv':'\u2AE9','vcy':'\u0432','Vcy':'\u0412','vdash':'\u22A2','vDash':'\u22A8','Vdash':'\u22A9','VDash':'\u22AB','Vdashl':'\u2AE6','vee':'\u2228','Vee':'\u22C1','veebar':'\u22BB','veeeq':'\u225A','vellip':'\u22EE','verbar':'|','Verbar':'\u2016','vert':'|','Vert':'\u2016','VerticalBar':'\u2223','VerticalLine':'|','VerticalSeparator':'\u2758','VerticalTilde':'\u2240','VeryThinSpace':'\u200A','vfr':'\uD835\uDD33','Vfr':'\uD835\uDD19','vltri':'\u22B2','vnsub':'\u2282\u20D2','vnsup':'\u2283\u20D2','vopf':'\uD835\uDD67','Vopf':'\uD835\uDD4D','vprop':'\u221D','vrtri':'\u22B3','vscr':'\uD835\uDCCB','Vscr':'\uD835\uDCB1','vsubne':'\u228A\uFE00','vsubnE':'\u2ACB\uFE00','vsupne':'\u228B\uFE00','vsupnE':'\u2ACC\uFE00','Vvdash':'\u22AA','vzigzag':'\u299A','wcirc':'\u0175','Wcirc':'\u0174','wedbar':'\u2A5F','wedge':'\u2227','Wedge':'\u22C0','wedgeq':'\u2259','weierp':'\u2118','wfr':'\uD835\uDD34','Wfr':'\uD835\uDD1A','wopf':'\uD835\uDD68','Wopf':'\uD835\uDD4E','wp':'\u2118','wr':'\u2240','wreath':'\u2240','wscr':'\uD835\uDCCC','Wscr':'\uD835\uDCB2','xcap':'\u22C2','xcirc':'\u25EF','xcup':'\u22C3','xdtri':'\u25BD','xfr':'\uD835\uDD35','Xfr':'\uD835\uDD1B','xharr':'\u27F7','xhArr':'\u27FA','xi':'\u03BE','Xi':'\u039E','xlarr':'\u27F5','xlArr':'\u27F8','xmap':'\u27FC','xnis':'\u22FB','xodot':'\u2A00','xopf':'\uD835\uDD69','Xopf':'\uD835\uDD4F','xoplus':'\u2A01','xotime':'\u2A02','xrarr':'\u27F6','xrArr':'\u27F9','xscr':'\uD835\uDCCD','Xscr':'\uD835\uDCB3','xsqcup':'\u2A06','xuplus':'\u2A04','xutri':'\u25B3','xvee':'\u22C1','xwedge':'\u22C0','yacute':'\xFD','Yacute':'\xDD','yacy':'\u044F','YAcy':'\u042F','ycirc':'\u0177','Ycirc':'\u0176','ycy':'\u044B','Ycy':'\u042B','yen':'\xA5','yfr':'\uD835\uDD36','Yfr':'\uD835\uDD1C','yicy':'\u0457','YIcy':'\u0407','yopf':'\uD835\uDD6A','Yopf':'\uD835\uDD50','yscr':'\uD835\uDCCE','Yscr':'\uD835\uDCB4','yucy':'\u044E','YUcy':'\u042E','yuml':'\xFF','Yuml':'\u0178','zacute':'\u017A','Zacute':'\u0179','zcaron':'\u017E','Zcaron':'\u017D','zcy':'\u0437','Zcy':'\u0417','zdot':'\u017C','Zdot':'\u017B','zeetrf':'\u2128','ZeroWidthSpace':'\u200B','zeta':'\u03B6','Zeta':'\u0396','zfr':'\uD835\uDD37','Zfr':'\u2128','zhcy':'\u0436','ZHcy':'\u0416','zigrarr':'\u21DD','zopf':'\uD835\uDD6B','Zopf':'\u2124','zscr':'\uD835\uDCCF','Zscr':'\uD835\uDCB5','zwj':'\u200D','zwnj':'\u200C'};
        var decodeMapLegacy = {'aacute':'\xE1','Aacute':'\xC1','acirc':'\xE2','Acirc':'\xC2','acute':'\xB4','aelig':'\xE6','AElig':'\xC6','agrave':'\xE0','Agrave':'\xC0','amp':'&','AMP':'&','aring':'\xE5','Aring':'\xC5','atilde':'\xE3','Atilde':'\xC3','auml':'\xE4','Auml':'\xC4','brvbar':'\xA6','ccedil':'\xE7','Ccedil':'\xC7','cedil':'\xB8','cent':'\xA2','copy':'\xA9','COPY':'\xA9','curren':'\xA4','deg':'\xB0','divide':'\xF7','eacute':'\xE9','Eacute':'\xC9','ecirc':'\xEA','Ecirc':'\xCA','egrave':'\xE8','Egrave':'\xC8','eth':'\xF0','ETH':'\xD0','euml':'\xEB','Euml':'\xCB','frac12':'\xBD','frac14':'\xBC','frac34':'\xBE','gt':'>','GT':'>','iacute':'\xED','Iacute':'\xCD','icirc':'\xEE','Icirc':'\xCE','iexcl':'\xA1','igrave':'\xEC','Igrave':'\xCC','iquest':'\xBF','iuml':'\xEF','Iuml':'\xCF','laquo':'\xAB','lt':'<','LT':'<','macr':'\xAF','micro':'\xB5','middot':'\xB7','nbsp':'\xA0','not':'\xAC','ntilde':'\xF1','Ntilde':'\xD1','oacute':'\xF3','Oacute':'\xD3','ocirc':'\xF4','Ocirc':'\xD4','ograve':'\xF2','Ograve':'\xD2','ordf':'\xAA','ordm':'\xBA','oslash':'\xF8','Oslash':'\xD8','otilde':'\xF5','Otilde':'\xD5','ouml':'\xF6','Ouml':'\xD6','para':'\xB6','plusmn':'\xB1','pound':'\xA3','quot':'"','QUOT':'"','raquo':'\xBB','reg':'\xAE','REG':'\xAE','sect':'\xA7','shy':'\xAD','sup1':'\xB9','sup2':'\xB2','sup3':'\xB3','szlig':'\xDF','thorn':'\xFE','THORN':'\xDE','times':'\xD7','uacute':'\xFA','Uacute':'\xDA','ucirc':'\xFB','Ucirc':'\xDB','ugrave':'\xF9','Ugrave':'\xD9','uml':'\xA8','uuml':'\xFC','Uuml':'\xDC','yacute':'\xFD','Yacute':'\xDD','yen':'\xA5','yuml':'\xFF'};
        var decodeMapNumeric = {'0':'\uFFFD','128':'\u20AC','130':'\u201A','131':'\u0192','132':'\u201E','133':'\u2026','134':'\u2020','135':'\u2021','136':'\u02C6','137':'\u2030','138':'\u0160','139':'\u2039','140':'\u0152','142':'\u017D','145':'\u2018','146':'\u2019','147':'\u201C','148':'\u201D','149':'\u2022','150':'\u2013','151':'\u2014','152':'\u02DC','153':'\u2122','154':'\u0161','155':'\u203A','156':'\u0153','158':'\u017E','159':'\u0178'};
        var invalidReferenceCodePoints = [1,2,3,4,5,6,7,8,11,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,64976,64977,64978,64979,64980,64981,64982,64983,64984,64985,64986,64987,64988,64989,64990,64991,64992,64993,64994,64995,64996,64997,64998,64999,65000,65001,65002,65003,65004,65005,65006,65007,65534,65535,131070,131071,196606,196607,262142,262143,327678,327679,393214,393215,458750,458751,524286,524287,589822,589823,655358,655359,720894,720895,786430,786431,851966,851967,917502,917503,983038,983039,1048574,1048575,1114110,1114111];

        /*--------------------------------------------------------------------------*/

        var stringFromCharCode = String.fromCharCode;

        var object = {};
        var hasOwnProperty = object.hasOwnProperty;
        var has = function(object, propertyName) {
                return hasOwnProperty.call(object, propertyName);
        };

        var contains = function(array, value) {
                var index = -1;
                var length = array.length;
                while (++index < length) {
                        if (array[index] == value) {
                                return true;
                        }
                }
                return false;
        };

        var merge = function(options, defaults) {
                if (!options) {
                        return defaults;
                }
                var result = {};
                var key;
                for (key in defaults) {
                        // A `hasOwnProperty` check is not needed here, since only recognized
                        // option names are used anyway. Any others are ignored.
                        result[key] = has(options, key) ? options[key] : defaults[key];
                }
                return result;
        };

        // Modified version of `ucs2encode`; see https://mths.be/punycode.
        var codePointToSymbol = function(codePoint, strict) {
                var output = '';
                if ((codePoint >= 0xD800 && codePoint <= 0xDFFF) || codePoint > 0x10FFFF) {
                        // See issue #4:
                        // “Otherwise, if the number is in the range 0xD800 to 0xDFFF or is
                        // greater than 0x10FFFF, then this is a parse error. Return a U+FFFD
                        // REPLACEMENT CHARACTER.”
                        if (strict) {
                                parseError('character reference outside the permissible Unicode range');
                        }
                        return '\uFFFD';
                }
                if (has(decodeMapNumeric, codePoint)) {
                        if (strict) {
                                parseError('disallowed character reference');
                        }
                        return decodeMapNumeric[codePoint];
                }
                if (strict && contains(invalidReferenceCodePoints, codePoint)) {
                        parseError('disallowed character reference');
                }
                if (codePoint > 0xFFFF) {
                        codePoint -= 0x10000;
                        output += stringFromCharCode(codePoint >>> 10 & 0x3FF | 0xD800);
                        codePoint = 0xDC00 | codePoint & 0x3FF;
                }
                output += stringFromCharCode(codePoint);
                return output;
        };

        var hexEscape = function(codePoint) {
                return '&#x' + codePoint.toString(16).toUpperCase() + ';';
        };

        var decEscape = function(codePoint) {
                return '&#' + codePoint + ';';
        };

        var parseError = function(message) {
                throw Error('Parse error: ' + message);
        };

        /*--------------------------------------------------------------------------*/

        var encode = function(string, options) {
                options = merge(options, encode.options);
                var strict = options.strict;
                if (strict && regexInvalidRawCodePoint.test(string)) {
                        parseError('forbidden code point');
                }
                var encodeEverything = options.encodeEverything;
                var useNamedReferences = options.useNamedReferences;
                var allowUnsafeSymbols = options.allowUnsafeSymbols;
                var escapeCodePoint = options.decimal ? decEscape : hexEscape;

                var escapeBmpSymbol = function(symbol) {
                        return escapeCodePoint(symbol.charCodeAt(0));
                };

                if (encodeEverything) {
                        // Encode ASCII symbols.
                        string = string.replace(regexAsciiWhitelist, function(symbol) {
                                // Use named references if requested & possible.
                                if (useNamedReferences && has(encodeMap, symbol)) {
                                        return '&' + encodeMap[symbol] + ';';
                                }
                                return escapeBmpSymbol(symbol);
                        });
                        // Shorten a few escapes that represent two symbols, of which at least one
                        // is within the ASCII range.
                        if (useNamedReferences) {
                                string = string
                                        .replace(/&gt;\u20D2/g, '&nvgt;')
                                        .replace(/&lt;\u20D2/g, '&nvlt;')
                                        .replace(/&#x66;&#x6A;/g, '&fjlig;');
                        }
                        // Encode non-ASCII symbols.
                        if (useNamedReferences) {
                                // Encode non-ASCII symbols that can be replaced with a named reference.
                                string = string.replace(regexEncodeNonAscii, function(string) {
                                        // Note: there is no need to check `has(encodeMap, string)` here.
                                        return '&' + encodeMap[string] + ';';
                                });
                        }
                        // Note: any remaining non-ASCII symbols are handled outside of the `if`.
                } else if (useNamedReferences) {
                        // Apply named character references.
                        // Encode `<>"'&` using named character references.
                        if (!allowUnsafeSymbols) {
                                string = string.replace(regexEscape, function(string) {
                                        return '&' + encodeMap[string] + ';'; // no need to check `has()` here
                                });
                        }
                        // Shorten escapes that represent two symbols, of which at least one is
                        // `<>"'&`.
                        string = string
                                .replace(/&gt;\u20D2/g, '&nvgt;')
                                .replace(/&lt;\u20D2/g, '&nvlt;');
                        // Encode non-ASCII symbols that can be replaced with a named reference.
                        string = string.replace(regexEncodeNonAscii, function(string) {
                                // Note: there is no need to check `has(encodeMap, string)` here.
                                return '&' + encodeMap[string] + ';';
                        });
                } else if (!allowUnsafeSymbols) {
                        // Encode `<>"'&` using hexadecimal escapes, now that they’re not handled
                        // using named character references.
                        string = string.replace(regexEscape, escapeBmpSymbol);
                }
                return string
                        // Encode astral symbols.
                        .replace(regexAstralSymbols, function($0) {
                                // https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
                                var high = $0.charCodeAt(0);
                                var low = $0.charCodeAt(1);
                                var codePoint = (high - 0xD800) * 0x400 + low - 0xDC00 + 0x10000;
                                return escapeCodePoint(codePoint);
                        })
                        // Encode any remaining BMP symbols that are not printable ASCII symbols
                        // using a hexadecimal escape.
                        .replace(regexBmpWhitelist, escapeBmpSymbol);
        };
        // Expose default options (so they can be overridden globally).
        encode.options = {
                'allowUnsafeSymbols': false,
                'encodeEverything': false,
                'strict': false,
                'useNamedReferences': false,
                'decimal' : false
        };

        var decode = function(html, options) {
                options = merge(options, decode.options);
                var strict = options.strict;
                if (strict && regexInvalidEntity.test(html)) {
                        parseError('malformed character reference');
                }
                return html.replace(regexDecode, function($0, $1, $2, $3, $4, $5, $6, $7, $8) {
                        var codePoint;
                        var semicolon;
                        var decDigits;
                        var hexDigits;
                        var reference;
                        var next;

                        if ($1) {
                                reference = $1;
                                // Note: there is no need to check `has(decodeMap, reference)`.
                                return decodeMap[reference];
                        }

                        if ($2) {
                                // Decode named character references without trailing `;`, e.g. `&amp`.
                                // This is only a parse error if it gets converted to `&`, or if it is
                                // followed by `=` in an attribute context.
                                reference = $2;
                                next = $3;
                                if (next && options.isAttributeValue) {
                                        if (strict && next == '=') {
                                                parseError('`&` did not start a character reference');
                                        }
                                        return $0;
                                } else {
                                        if (strict) {
                                                parseError(
                                                        'named character reference was not terminated by a semicolon'
                                                );
                                        }
                                        // Note: there is no need to check `has(decodeMapLegacy, reference)`.
                                        return decodeMapLegacy[reference] + (next || '');
                                }
                        }

                        if ($4) {
                                // Decode decimal escapes, e.g. `&#119558;`.
                                decDigits = $4;
                                semicolon = $5;
                                if (strict && !semicolon) {
                                        parseError('character reference was not terminated by a semicolon');
                                }
                                codePoint = parseInt(decDigits, 10);
                                return codePointToSymbol(codePoint, strict);
                        }

                        if ($6) {
                                // Decode hexadecimal escapes, e.g. `&#x1D306;`.
                                hexDigits = $6;
                                semicolon = $7;
                                if (strict && !semicolon) {
                                        parseError('character reference was not terminated by a semicolon');
                                }
                                codePoint = parseInt(hexDigits, 16);
                                return codePointToSymbol(codePoint, strict);
                        }

                        // If we’re still here, `if ($7)` is implied; it’s an ambiguous
                        // ampersand for sure. https://mths.be/notes/ambiguous-ampersands
                        if (strict) {
                                parseError(
                                        'named character reference was not terminated by a semicolon'
                                );
                        }
                        return $0;
                });
        };
        // Expose default options (so they can be overridden globally).
        decode.options = {
                'isAttributeValue': false,
                'strict': false
        };

        var escape = function(string) {
                return string.replace(regexEscape, function($0) {
                        // Note: there is no need to check `has(escapeMap, $0)` here.
                        return escapeMap[$0];
                });
        };

        /*--------------------------------------------------------------------------*/

        var he = {
                'version': '1.2.0',
                'encode': encode,
                'decode': decode,
                'escape': escape,
                'unescape': decode
        };

        // Some AMD build optimizers, like r.js, check for specific condition patterns
        // like the following:
        if (
                typeof define == 'function' &&
                typeof define.amd == 'object' &&
                define.amd
        ) {
                define(function() {
                        return he;
                });
        }       else if (freeExports && !freeExports.nodeType) {
                if (freeModule) { // in Node.js, io.js, or RingoJS v0.8.0+
                        freeModule.exports = he;
                } else { // in Narwhal or RingoJS v0.7.0-
                        for (var key in he) {
                                has(he, key) && (freeExports[key] = he[key]);
                        }
                }
        } else { // in Rhino or a web browser
                root.he = he;
        }

}(this));

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],104:[function(require,module,exports){
var http = require('http')
var url = require('url')

var https = module.exports

for (var key in http) {
  if (http.hasOwnProperty(key)) https[key] = http[key]
}

https.request = function (params, cb) {
  params = validateParams(params)
  return http.request.call(this, params, cb)
}

https.get = function (params, cb) {
  params = validateParams(params)
  return http.get.call(this, params, cb)
}

function validateParams (params) {
  if (typeof params === 'string') {
    params = url.parse(params)
  }
  if (!params.protocol) {
    params.protocol = 'https:'
  }
  if (params.protocol !== 'https:') {
    throw new Error('Protocol "' + params.protocol + '" not supported. Expected "https:"')
  }
  return params
}

},{"http":155,"url":162}],105:[function(require,module,exports){
exports.read = function (buffer, offset, isLE, mLen, nBytes) {
  var e, m
  var eLen = (nBytes * 8) - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var nBits = -7
  var i = isLE ? (nBytes - 1) : 0
  var d = isLE ? -1 : 1
  var s = buffer[offset + i]

  i += d

  e = s & ((1 << (-nBits)) - 1)
  s >>= (-nBits)
  nBits += eLen
  for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}

  m = e & ((1 << (-nBits)) - 1)
  e >>= (-nBits)
  nBits += mLen
  for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}

  if (e === 0) {
    e = 1 - eBias
  } else if (e === eMax) {
    return m ? NaN : ((s ? -1 : 1) * Infinity)
  } else {
    m = m + Math.pow(2, mLen)
    e = e - eBias
  }
  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
}

exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
  var e, m, c
  var eLen = (nBytes * 8) - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
  var i = isLE ? 0 : (nBytes - 1)
  var d = isLE ? 1 : -1
  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0

  value = Math.abs(value)

  if (isNaN(value) || value === Infinity) {
    m = isNaN(value) ? 1 : 0
    e = eMax
  } else {
    e = Math.floor(Math.log(value) / Math.LN2)
    if (value * (c = Math.pow(2, -e)) < 1) {
      e--
      c *= 2
    }
    if (e + eBias >= 1) {
      value += rt / c
    } else {
      value += rt * Math.pow(2, 1 - eBias)
    }
    if (value * c >= 2) {
      e++
      c /= 2
    }

    if (e + eBias >= eMax) {
      m = 0
      e = eMax
    } else if (e + eBias >= 1) {
      m = ((value * c) - 1) * Math.pow(2, mLen)
      e = e + eBias
    } else {
      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
      e = 0
    }
  }

  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}

  e = (e << mLen) | m
  eLen += mLen
  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}

  buffer[offset + i - d] |= s * 128
}

},{}],106:[function(require,module,exports){
if (typeof Object.create === 'function') {
  // implementation from standard node.js 'util' module
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    ctor.prototype = Object.create(superCtor.prototype, {
      constructor: {
        value: ctor,
        enumerable: false,
        writable: true,
        configurable: true
      }
    });
  };
} else {
  // old school shim for old browsers
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    var TempCtor = function () {}
    TempCtor.prototype = superCtor.prototype
    ctor.prototype = new TempCtor()
    ctor.prototype.constructor = ctor
  }
}

},{}],107:[function(require,module,exports){
/*!
 * Determine if an object is a Buffer
 *
 * @author   Feross Aboukhadijeh <https://feross.org>
 * @license  MIT
 */

// The _isBuffer check is for Safari 5-7 support, because it's missing
// Object.prototype.constructor. Remove this eventually
module.exports = function (obj) {
  return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
}

function isBuffer (obj) {
  return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
}

// For Node v0.10 support. Remove this eventually.
function isSlowBuffer (obj) {
  return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
}

},{}],108:[function(require,module,exports){
var toString = {}.toString;

module.exports = Array.isArray || function (arr) {
  return toString.call(arr) == '[object Array]';
};

},{}],109:[function(require,module,exports){
exports.endianness = function () { return 'LE' };

exports.hostname = function () {
    if (typeof location !== 'undefined') {
        return location.hostname
    }
    else return '';
};

exports.loadavg = function () { return [] };

exports.uptime = function () { return 0 };

exports.freemem = function () {
    return Number.MAX_VALUE;
};

exports.totalmem = function () {
    return Number.MAX_VALUE;
};

exports.cpus = function () { return [] };

exports.type = function () { return 'Browser' };

exports.release = function () {
    if (typeof navigator !== 'undefined') {
        return navigator.appVersion;
    }
    return '';
};

exports.networkInterfaces
= exports.getNetworkInterfaces
= function () { return {} };

exports.arch = function () { return 'javascript' };

exports.platform = function () { return 'browser' };

exports.tmpdir = exports.tmpDir = function () {
    return '/tmp';
};

exports.EOL = '\n';

exports.homedir = function () {
        return '/'
};

},{}],110:[function(require,module,exports){
(function (process){
// .dirname, .basename, and .extname methods are extracted from Node.js v8.11.1,
// backported and transplited with Babel, with backwards-compat fixes

// 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.

// resolves . and .. elements in a path array with directory names there
// must be no slashes, empty elements, or device names (c:\) in the array
// (so also no leading and trailing slashes - it does not distinguish
// relative and absolute paths)
function normalizeArray(parts, allowAboveRoot) {
  // if the path tries to go above the root, `up` ends up > 0
  var up = 0;
  for (var i = parts.length - 1; i >= 0; i--) {
    var last = parts[i];
    if (last === '.') {
      parts.splice(i, 1);
    } else if (last === '..') {
      parts.splice(i, 1);
      up++;
    } else if (up) {
      parts.splice(i, 1);
      up--;
    }
  }

  // if the path is allowed to go above the root, restore leading ..s
  if (allowAboveRoot) {
    for (; up--; up) {
      parts.unshift('..');
    }
  }

  return parts;
}

// path.resolve([from ...], to)
// posix version
exports.resolve = function() {
  var resolvedPath = '',
      resolvedAbsolute = false;

  for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
    var path = (i >= 0) ? arguments[i] : process.cwd();

    // Skip empty and invalid entries
    if (typeof path !== 'string') {
      throw new TypeError('Arguments to path.resolve must be strings');
    } else if (!path) {
      continue;
    }

    resolvedPath = path + '/' + resolvedPath;
    resolvedAbsolute = path.charAt(0) === '/';
  }

  // At this point the path should be resolved to a full absolute path, but
  // handle relative paths to be safe (might happen when process.cwd() fails)

  // Normalize the path
  resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) {
    return !!p;
  }), !resolvedAbsolute).join('/');

  return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
};

// path.normalize(path)
// posix version
exports.normalize = function(path) {
  var isAbsolute = exports.isAbsolute(path),
      trailingSlash = substr(path, -1) === '/';

  // Normalize the path
  path = normalizeArray(filter(path.split('/'), function(p) {
    return !!p;
  }), !isAbsolute).join('/');

  if (!path && !isAbsolute) {
    path = '.';
  }
  if (path && trailingSlash) {
    path += '/';
  }

  return (isAbsolute ? '/' : '') + path;
};

// posix version
exports.isAbsolute = function(path) {
  return path.charAt(0) === '/';
};

// posix version
exports.join = function() {
  var paths = Array.prototype.slice.call(arguments, 0);
  return exports.normalize(filter(paths, function(p, index) {
    if (typeof p !== 'string') {
      throw new TypeError('Arguments to path.join must be strings');
    }
    return p;
  }).join('/'));
};


// path.relative(from, to)
// posix version
exports.relative = function(from, to) {
  from = exports.resolve(from).substr(1);
  to = exports.resolve(to).substr(1);

  function trim(arr) {
    var start = 0;
    for (; start < arr.length; start++) {
      if (arr[start] !== '') break;
    }

    var end = arr.length - 1;
    for (; end >= 0; end--) {
      if (arr[end] !== '') break;
    }

    if (start > end) return [];
    return arr.slice(start, end - start + 1);
  }

  var fromParts = trim(from.split('/'));
  var toParts = trim(to.split('/'));

  var length = Math.min(fromParts.length, toParts.length);
  var samePartsLength = length;
  for (var i = 0; i < length; i++) {
    if (fromParts[i] !== toParts[i]) {
      samePartsLength = i;
      break;
    }
  }

  var outputParts = [];
  for (var i = samePartsLength; i < fromParts.length; i++) {
    outputParts.push('..');
  }

  outputParts = outputParts.concat(toParts.slice(samePartsLength));

  return outputParts.join('/');
};

exports.sep = '/';
exports.delimiter = ':';

exports.dirname = function (path) {
  if (typeof path !== 'string') path = path + '';
  if (path.length === 0) return '.';
  var code = path.charCodeAt(0);
  var hasRoot = code === 47 /*/*/;
  var end = -1;
  var matchedSlash = true;
  for (var i = path.length - 1; i >= 1; --i) {
    code = path.charCodeAt(i);
    if (code === 47 /*/*/) {
        if (!matchedSlash) {
          end = i;
          break;
        }
      } else {
      // We saw the first non-path separator
      matchedSlash = false;
    }
  }

  if (end === -1) return hasRoot ? '/' : '.';
  if (hasRoot && end === 1) {
    // return '//';
    // Backwards-compat fix:
    return '/';
  }
  return path.slice(0, end);
};

function basename(path) {
  if (typeof path !== 'string') path = path + '';

  var start = 0;
  var end = -1;
  var matchedSlash = true;
  var i;

  for (i = path.length - 1; i >= 0; --i) {
    if (path.charCodeAt(i) === 47 /*/*/) {
        // If we reached a path separator that was not part of a set of path
        // separators at the end of the string, stop now
        if (!matchedSlash) {
          start = i + 1;
          break;
        }
      } else if (end === -1) {
      // We saw the first non-path separator, mark this as the end of our
      // path component
      matchedSlash = false;
      end = i + 1;
    }
  }

  if (end === -1) return '';
  return path.slice(start, end);
}

// Uses a mixed approach for backwards-compatibility, as ext behavior changed
// in new Node.js versions, so only basename() above is backported here
exports.basename = function (path, ext) {
  var f = basename(path);
  if (ext && f.substr(-1 * ext.length) === ext) {
    f = f.substr(0, f.length - ext.length);
  }
  return f;
};

exports.extname = function (path) {
  if (typeof path !== 'string') path = path + '';
  var startDot = -1;
  var startPart = 0;
  var end = -1;
  var matchedSlash = true;
  // Track the state of characters (if any) we see before our first dot and
  // after any path separator we find
  var preDotState = 0;
  for (var i = path.length - 1; i >= 0; --i) {
    var code = path.charCodeAt(i);
    if (code === 47 /*/*/) {
        // If we reached a path separator that was not part of a set of path
        // separators at the end of the string, stop now
        if (!matchedSlash) {
          startPart = i + 1;
          break;
        }
        continue;
      }
    if (end === -1) {
      // We saw the first non-path separator, mark this as the end of our
      // extension
      matchedSlash = false;
      end = i + 1;
    }
    if (code === 46 /*.*/) {
        // If this is our first dot, mark it as the start of our extension
        if (startDot === -1)
          startDot = i;
        else if (preDotState !== 1)
          preDotState = 1;
    } else if (startDot !== -1) {
      // We saw a non-dot and non-path separator before our dot, so we should
      // have a good chance at having a non-empty extension
      preDotState = -1;
    }
  }

  if (startDot === -1 || end === -1 ||
      // We saw a non-dot character immediately before the dot
      preDotState === 0 ||
      // The (right-most) trimmed path component is exactly '..'
      preDotState === 1 && startDot === end - 1 && startDot === startPart + 1) {
    return '';
  }
  return path.slice(startDot, end);
};

function filter (xs, f) {
    if (xs.filter) return xs.filter(f);
    var res = [];
    for (var i = 0; i < xs.length; i++) {
        if (f(xs[i], i, xs)) res.push(xs[i]);
    }
    return res;
}

// String.prototype.substr - negative index don't work in IE8
var substr = 'ab'.substr(-1) === 'b'
    ? function (str, start, len) { return str.substr(start, len) }
    : function (str, start, len) {
        if (start < 0) start = str.length + start;
        return str.substr(start, len);
    }
;

}).call(this,require('_process'))
},{"_process":112}],111:[function(require,module,exports){
(function (process){
'use strict';

if (!process.version ||
    process.version.indexOf('v0.') === 0 ||
    process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {
  module.exports = { nextTick: nextTick };
} else {
  module.exports = process
}

function nextTick(fn, arg1, arg2, arg3) {
  if (typeof fn !== 'function') {
    throw new TypeError('"callback" argument must be a function');
  }
  var len = arguments.length;
  var args, i;
  switch (len) {
  case 0:
  case 1:
    return process.nextTick(fn);
  case 2:
    return process.nextTick(function afterTickOne() {
      fn.call(null, arg1);
    });
  case 3:
    return process.nextTick(function afterTickTwo() {
      fn.call(null, arg1, arg2);
    });
  case 4:
    return process.nextTick(function afterTickThree() {
      fn.call(null, arg1, arg2, arg3);
    });
  default:
    args = new Array(len - 1);
    i = 0;
    while (i < args.length) {
      args[i++] = arguments[i];
    }
    return process.nextTick(function afterTick() {
      fn.apply(null, args);
    });
  }
}


}).call(this,require('_process'))
},{"_process":112}],112:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};

// cached from whatever global is present so that test runners that stub it
// don't break things.  But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals.  It's inside a
// function because try/catches deoptimize in certain engines.

var cachedSetTimeout;
var cachedClearTimeout;

function defaultSetTimout() {
    throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
    throw new Error('clearTimeout has not been defined');
}
(function () {
    try {
        if (typeof setTimeout === 'function') {
            cachedSetTimeout = setTimeout;
        } else {
            cachedSetTimeout = defaultSetTimout;
        }
    } catch (e) {
        cachedSetTimeout = defaultSetTimout;
    }
    try {
        if (typeof clearTimeout === 'function') {
            cachedClearTimeout = clearTimeout;
        } else {
            cachedClearTimeout = defaultClearTimeout;
        }
    } catch (e) {
        cachedClearTimeout = defaultClearTimeout;
    }
} ())
function runTimeout(fun) {
    if (cachedSetTimeout === setTimeout) {
        //normal enviroments in sane situations
        return setTimeout(fun, 0);
    }
    // if setTimeout wasn't available but was latter defined
    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
        cachedSetTimeout = setTimeout;
        return setTimeout(fun, 0);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedSetTimeout(fun, 0);
    } catch(e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
            return cachedSetTimeout.call(null, fun, 0);
        } catch(e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
            return cachedSetTimeout.call(this, fun, 0);
        }
    }


}
function runClearTimeout(marker) {
    if (cachedClearTimeout === clearTimeout) {
        //normal enviroments in sane situations
        return clearTimeout(marker);
    }
    // if clearTimeout wasn't available but was latter defined
    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
        cachedClearTimeout = clearTimeout;
        return clearTimeout(marker);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedClearTimeout(marker);
    } catch (e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
            return cachedClearTimeout.call(null, marker);
        } catch (e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
            return cachedClearTimeout.call(this, marker);
        }
    }



}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;

function cleanUpNextTick() {
    if (!draining || !currentQueue) {
        return;
    }
    draining = false;
    if (currentQueue.length) {
        queue = currentQueue.concat(queue);
    } else {
        queueIndex = -1;
    }
    if (queue.length) {
        drainQueue();
    }
}

function drainQueue() {
    if (draining) {
        return;
    }
    var timeout = runTimeout(cleanUpNextTick);
    draining = true;

    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        while (++queueIndex < len) {
            if (currentQueue) {
                currentQueue[queueIndex].run();
            }
        }
        queueIndex = -1;
        len = queue.length;
    }
    currentQueue = null;
    draining = false;
    runClearTimeout(timeout);
}

process.nextTick = function (fun) {
    var args = new Array(arguments.length - 1);
    if (arguments.length > 1) {
        for (var i = 1; i < arguments.length; i++) {
            args[i - 1] = arguments[i];
        }
    }
    queue.push(new Item(fun, args));
    if (queue.length === 1 && !draining) {
        runTimeout(drainQueue);
    }
};

// v8 likes predictible objects
function Item(fun, array) {
    this.fun = fun;
    this.array = array;
}
Item.prototype.run = function () {
    this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;

process.listeners = function (name) { return [] }

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };

},{}],113:[function(require,module,exports){
(function (global){
/*! https://mths.be/punycode v1.4.1 by @mathias */
;(function(root) {

        /** Detect free variables */
        var freeExports = typeof exports == 'object' && exports &&
                !exports.nodeType && exports;
        var freeModule = typeof module == 'object' && module &&
                !module.nodeType && module;
        var freeGlobal = typeof global == 'object' && global;
        if (
                freeGlobal.global === freeGlobal ||
                freeGlobal.window === freeGlobal ||
                freeGlobal.self === freeGlobal
        ) {
                root = freeGlobal;
        }

        /**
         * The `punycode` object.
         * @name punycode
         * @type Object
         */
        var punycode,

        /** Highest positive signed 32-bit float value */
        maxInt = 2147483647, // aka. 0x7FFFFFFF or 2^31-1

        /** Bootstring parameters */
        base = 36,
        tMin = 1,
        tMax = 26,
        skew = 38,
        damp = 700,
        initialBias = 72,
        initialN = 128, // 0x80
        delimiter = '-', // '\x2D'

        /** Regular expressions */
        regexPunycode = /^xn--/,
        regexNonASCII = /[^\x20-\x7E]/, // unprintable ASCII chars + non-ASCII chars
        regexSeparators = /[\x2E\u3002\uFF0E\uFF61]/g, // RFC 3490 separators

        /** Error messages */
        errors = {
                'overflow': 'Overflow: input needs wider integers to process',
                'not-basic': 'Illegal input >= 0x80 (not a basic code point)',
                'invalid-input': 'Invalid input'
        },

        /** Convenience shortcuts */
        baseMinusTMin = base - tMin,
        floor = Math.floor,
        stringFromCharCode = String.fromCharCode,

        /** Temporary variable */
        key;

        /*--------------------------------------------------------------------------*/

        /**
         * A generic error utility function.
         * @private
         * @param {String} type The error type.
         * @returns {Error} Throws a `RangeError` with the applicable error message.
         */
        function error(type) {
                throw new RangeError(errors[type]);
        }

        /**
         * A generic `Array#map` utility function.
         * @private
         * @param {Array} array The array to iterate over.
         * @param {Function} callback The function that gets called for every array
         * item.
         * @returns {Array} A new array of values returned by the callback function.
         */
        function map(array, fn) {
                var length = array.length;
                var result = [];
                while (length--) {
                        result[length] = fn(array[length]);
                }
                return result;
        }

        /**
         * A simple `Array#map`-like wrapper to work with domain name strings or email
         * addresses.
         * @private
         * @param {String} domain The domain name or email address.
         * @param {Function} callback The function that gets called for every
         * character.
         * @returns {Array} A new string of characters returned by the callback
         * function.
         */
        function mapDomain(string, fn) {
                var parts = string.split('@');
                var result = '';
                if (parts.length > 1) {
                        // In email addresses, only the domain name should be punycoded. Leave
                        // the local part (i.e. everything up to `@`) intact.
                        result = parts[0] + '@';
                        string = parts[1];
                }
                // Avoid `split(regex)` for IE8 compatibility. See #17.
                string = string.replace(regexSeparators, '\x2E');
                var labels = string.split('.');
                var encoded = map(labels, fn).join('.');
                return result + encoded;
        }

        /**
         * Creates an array containing the numeric code points of each Unicode
         * character in the string. While JavaScript uses UCS-2 internally,
         * this function will convert a pair of surrogate halves (each of which
         * UCS-2 exposes as separate characters) into a single code point,
         * matching UTF-16.
         * @see `punycode.ucs2.encode`
         * @see <https://mathiasbynens.be/notes/javascript-encoding>
         * @memberOf punycode.ucs2
         * @name decode
         * @param {String} string The Unicode input string (UCS-2).
         * @returns {Array} The new array of code points.
         */
        function ucs2decode(string) {
                var output = [],
                    counter = 0,
                    length = string.length,
                    value,
                    extra;
                while (counter < length) {
                        value = string.charCodeAt(counter++);
                        if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
                                // high surrogate, and there is a next character
                                extra = string.charCodeAt(counter++);
                                if ((extra & 0xFC00) == 0xDC00) { // low surrogate
                                        output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
                                } else {
                                        // unmatched surrogate; only append this code unit, in case the next
                                        // code unit is the high surrogate of a surrogate pair
                                        output.push(value);
                                        counter--;
                                }
                        } else {
                                output.push(value);
                        }
                }
                return output;
        }

        /**
         * Creates a string based on an array of numeric code points.
         * @see `punycode.ucs2.decode`
         * @memberOf punycode.ucs2
         * @name encode
         * @param {Array} codePoints The array of numeric code points.
         * @returns {String} The new Unicode string (UCS-2).
         */
        function ucs2encode(array) {
                return map(array, function(value) {
                        var output = '';
                        if (value > 0xFFFF) {
                                value -= 0x10000;
                                output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);
                                value = 0xDC00 | value & 0x3FF;
                        }
                        output += stringFromCharCode(value);
                        return output;
                }).join('');
        }

        /**
         * Converts a basic code point into a digit/integer.
         * @see `digitToBasic()`
         * @private
         * @param {Number} codePoint The basic numeric code point value.
         * @returns {Number} The numeric value of a basic code point (for use in
         * representing integers) in the range `0` to `base - 1`, or `base` if
         * the code point does not represent a value.
         */
        function basicToDigit(codePoint) {
                if (codePoint - 48 < 10) {
                        return codePoint - 22;
                }
                if (codePoint - 65 < 26) {
                        return codePoint - 65;
                }
                if (codePoint - 97 < 26) {
                        return codePoint - 97;
                }
                return base;
        }

        /**
         * Converts a digit/integer into a basic code point.
         * @see `basicToDigit()`
         * @private
         * @param {Number} digit The numeric value of a basic code point.
         * @returns {Number} The basic code point whose value (when used for
         * representing integers) is `digit`, which needs to be in the range
         * `0` to `base - 1`. If `flag` is non-zero, the uppercase form is
         * used; else, the lowercase form is used. The behavior is undefined
         * if `flag` is non-zero and `digit` has no uppercase form.
         */
        function digitToBasic(digit, flag) {
                //  0..25 map to ASCII a..z or A..Z
                // 26..35 map to ASCII 0..9
                return digit + 22 + 75 * (digit < 26) - ((flag != 0) << 5);
        }

        /**
         * Bias adaptation function as per section 3.4 of RFC 3492.
         * https://tools.ietf.org/html/rfc3492#section-3.4
         * @private
         */
        function adapt(delta, numPoints, firstTime) {
                var k = 0;
                delta = firstTime ? floor(delta / damp) : delta >> 1;
                delta += floor(delta / numPoints);
                for (/* no initialization */; delta > baseMinusTMin * tMax >> 1; k += base) {
                        delta = floor(delta / baseMinusTMin);
                }
                return floor(k + (baseMinusTMin + 1) * delta / (delta + skew));
        }

        /**
         * Converts a Punycode string of ASCII-only symbols to a string of Unicode
         * symbols.
         * @memberOf punycode
         * @param {String} input The Punycode string of ASCII-only symbols.
         * @returns {String} The resulting string of Unicode symbols.
         */
        function decode(input) {
                // Don't use UCS-2
                var output = [],
                    inputLength = input.length,
                    out,
                    i = 0,
                    n = initialN,
                    bias = initialBias,
                    basic,
                    j,
                    index,
                    oldi,
                    w,
                    k,
                    digit,
                    t,
                    /** Cached calculation results */
                    baseMinusT;

                // Handle the basic code points: let `basic` be the number of input code
                // points before the last delimiter, or `0` if there is none, then copy
                // the first basic code points to the output.

                basic = input.lastIndexOf(delimiter);
                if (basic < 0) {
                        basic = 0;
                }

                for (j = 0; j < basic; ++j) {
                        // if it's not a basic code point
                        if (input.charCodeAt(j) >= 0x80) {
                                error('not-basic');
                        }
                        output.push(input.charCodeAt(j));
                }

                // Main decoding loop: start just after the last delimiter if any basic code
                // points were copied; start at the beginning otherwise.

                for (index = basic > 0 ? basic + 1 : 0; index < inputLength; /* no final expression */) {

                        // `index` is the index of the next character to be consumed.
                        // Decode a generalized variable-length integer into `delta`,
                        // which gets added to `i`. The overflow checking is easier
                        // if we increase `i` as we go, then subtract off its starting
                        // value at the end to obtain `delta`.
                        for (oldi = i, w = 1, k = base; /* no condition */; k += base) {

                                if (index >= inputLength) {
                                        error('invalid-input');
                                }

                                digit = basicToDigit(input.charCodeAt(index++));

                                if (digit >= base || digit > floor((maxInt - i) / w)) {
                                        error('overflow');
                                }

                                i += digit * w;
                                t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);

                                if (digit < t) {
                                        break;
                                }

                                baseMinusT = base - t;
                                if (w > floor(maxInt / baseMinusT)) {
                                        error('overflow');
                                }

                                w *= baseMinusT;

                        }

                        out = output.length + 1;
                        bias = adapt(i - oldi, out, oldi == 0);

                        // `i` was supposed to wrap around from `out` to `0`,
                        // incrementing `n` each time, so we'll fix that now:
                        if (floor(i / out) > maxInt - n) {
                                error('overflow');
                        }

                        n += floor(i / out);
                        i %= out;

                        // Insert `n` at position `i` of the output
                        output.splice(i++, 0, n);

                }

                return ucs2encode(output);
        }

        /**
         * Converts a string of Unicode symbols (e.g. a domain name label) to a
         * Punycode string of ASCII-only symbols.
         * @memberOf punycode
         * @param {String} input The string of Unicode symbols.
         * @returns {String} The resulting Punycode string of ASCII-only symbols.
         */
        function encode(input) {
                var n,
                    delta,
                    handledCPCount,
                    basicLength,
                    bias,
                    j,
                    m,
                    q,
                    k,
                    t,
                    currentValue,
                    output = [],
                    /** `inputLength` will hold the number of code points in `input`. */
                    inputLength,
                    /** Cached calculation results */
                    handledCPCountPlusOne,
                    baseMinusT,
                    qMinusT;

                // Convert the input in UCS-2 to Unicode
                input = ucs2decode(input);

                // Cache the length
                inputLength = input.length;

                // Initialize the state
                n = initialN;
                delta = 0;
                bias = initialBias;

                // Handle the basic code points
                for (j = 0; j < inputLength; ++j) {
                        currentValue = input[j];
                        if (currentValue < 0x80) {
                                output.push(stringFromCharCode(currentValue));
                        }
                }

                handledCPCount = basicLength = output.length;

                // `handledCPCount` is the number of code points that have been handled;
                // `basicLength` is the number of basic code points.

                // Finish the basic string - if it is not empty - with a delimiter
                if (basicLength) {
                        output.push(delimiter);
                }

                // Main encoding loop:
                while (handledCPCount < inputLength) {

                        // All non-basic code points < n have been handled already. Find the next
                        // larger one:
                        for (m = maxInt, j = 0; j < inputLength; ++j) {
                                currentValue = input[j];
                                if (currentValue >= n && currentValue < m) {
                                        m = currentValue;
                                }
                        }

                        // Increase `delta` enough to advance the decoder's <n,i> state to <m,0>,
                        // but guard against overflow
                        handledCPCountPlusOne = handledCPCount + 1;
                        if (m - n > floor((maxInt - delta) / handledCPCountPlusOne)) {
                                error('overflow');
                        }

                        delta += (m - n) * handledCPCountPlusOne;
                        n = m;

                        for (j = 0; j < inputLength; ++j) {
                                currentValue = input[j];

                                if (currentValue < n && ++delta > maxInt) {
                                        error('overflow');
                                }

                                if (currentValue == n) {
                                        // Represent delta as a generalized variable-length integer
                                        for (q = delta, k = base; /* no condition */; k += base) {
                                                t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);
                                                if (q < t) {
                                                        break;
                                                }
                                                qMinusT = q - t;
                                                baseMinusT = base - t;
                                                output.push(
                                                        stringFromCharCode(digitToBasic(t + qMinusT % baseMinusT, 0))
                                                );
                                                q = floor(qMinusT / baseMinusT);
                                        }

                                        output.push(stringFromCharCode(digitToBasic(q, 0)));
                                        bias = adapt(delta, handledCPCountPlusOne, handledCPCount == basicLength);
                                        delta = 0;
                                        ++handledCPCount;
                                }
                        }

                        ++delta;
                        ++n;

                }
                return output.join('');
        }

        /**
         * Converts a Punycode string representing a domain name or an email address
         * to Unicode. Only the Punycoded parts of the input will be converted, i.e.
         * it doesn't matter if you call it on a string that has already been
         * converted to Unicode.
         * @memberOf punycode
         * @param {String} input The Punycoded domain name or email address to
         * convert to Unicode.
         * @returns {String} The Unicode representation of the given Punycode
         * string.
         */
        function toUnicode(input) {
                return mapDomain(input, function(string) {
                        return regexPunycode.test(string)
                                ? decode(string.slice(4).toLowerCase())
                                : string;
                });
        }

        /**
         * Converts a Unicode string representing a domain name or an email address to
         * Punycode. Only the non-ASCII parts of the domain name will be converted,
         * i.e. it doesn't matter if you call it with a domain that's already in
         * ASCII.
         * @memberOf punycode
         * @param {String} input The domain name or email address to convert, as a
         * Unicode string.
         * @returns {String} The Punycode representation of the given domain name or
         * email address.
         */
        function toASCII(input) {
                return mapDomain(input, function(string) {
                        return regexNonASCII.test(string)
                                ? 'xn--' + encode(string)
                                : string;
                });
        }

        /*--------------------------------------------------------------------------*/

        /** Define the public API */
        punycode = {
                /**
                 * A string representing the current Punycode.js version number.
                 * @memberOf punycode
                 * @type String
                 */
                'version': '1.4.1',
                /**
                 * An object of methods to convert from JavaScript's internal character
                 * representation (UCS-2) to Unicode code points, and back.
                 * @see <https://mathiasbynens.be/notes/javascript-encoding>
                 * @memberOf punycode
                 * @type Object
                 */
                'ucs2': {
                        'decode': ucs2decode,
                        'encode': ucs2encode
                },
                'decode': decode,
                'encode': encode,
                'toASCII': toASCII,
                'toUnicode': toUnicode
        };

        /** Expose `punycode` */
        // Some AMD build optimizers, like r.js, check for specific condition patterns
        // like the following:
        if (
                typeof define == 'function' &&
                typeof define.amd == 'object' &&
                define.amd
        ) {
                define('punycode', function() {
                        return punycode;
                });
        } else if (freeExports && freeModule) {
                if (module.exports == freeExports) {
                        // in Node.js, io.js, or RingoJS v0.8.0+
                        freeModule.exports = punycode;
                } else {
                        // in Narwhal or RingoJS v0.7.0-
                        for (key in punycode) {
                                punycode.hasOwnProperty(key) && (freeExports[key] = punycode[key]);
                        }
                }
        } else {
                // in Rhino or a web browser
                root.punycode = punycode;
        }

}(this));

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],114:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

// If obj.hasOwnProperty has been overridden, then calling
// obj.hasOwnProperty(prop) will break.
// See: https://github.com/joyent/node/issues/1707
function hasOwnProperty(obj, prop) {
  return Object.prototype.hasOwnProperty.call(obj, prop);
}

module.exports = function(qs, sep, eq, options) {
  sep = sep || '&';
  eq = eq || '=';
  var obj = {};

  if (typeof qs !== 'string' || qs.length === 0) {
    return obj;
  }

  var regexp = /\+/g;
  qs = qs.split(sep);

  var maxKeys = 1000;
  if (options && typeof options.maxKeys === 'number') {
    maxKeys = options.maxKeys;
  }

  var len = qs.length;
  // maxKeys <= 0 means that we should not limit keys count
  if (maxKeys > 0 && len > maxKeys) {
    len = maxKeys;
  }

  for (var i = 0; i < len; ++i) {
    var x = qs[i].replace(regexp, '%20'),
        idx = x.indexOf(eq),
        kstr, vstr, k, v;

    if (idx >= 0) {
      kstr = x.substr(0, idx);
      vstr = x.substr(idx + 1);
    } else {
      kstr = x;
      vstr = '';
    }

    k = decodeURIComponent(kstr);
    v = decodeURIComponent(vstr);

    if (!hasOwnProperty(obj, k)) {
      obj[k] = v;
    } else if (isArray(obj[k])) {
      obj[k].push(v);
    } else {
      obj[k] = [obj[k], v];
    }
  }

  return obj;
};

var isArray = Array.isArray || function (xs) {
  return Object.prototype.toString.call(xs) === '[object Array]';
};

},{}],115:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

var stringifyPrimitive = function(v) {
  switch (typeof v) {
    case 'string':
      return v;

    case 'boolean':
      return v ? 'true' : 'false';

    case 'number':
      return isFinite(v) ? v : '';

    default:
      return '';
  }
};

module.exports = function(obj, sep, eq, name) {
  sep = sep || '&';
  eq = eq || '=';
  if (obj === null) {
    obj = undefined;
  }

  if (typeof obj === 'object') {
    return map(objectKeys(obj), function(k) {
      var ks = encodeURIComponent(stringifyPrimitive(k)) + eq;
      if (isArray(obj[k])) {
        return map(obj[k], function(v) {
          return ks + encodeURIComponent(stringifyPrimitive(v));
        }).join(sep);
      } else {
        return ks + encodeURIComponent(stringifyPrimitive(obj[k]));
      }
    }).join(sep);

  }

  if (!name) return '';
  return encodeURIComponent(stringifyPrimitive(name)) + eq +
         encodeURIComponent(stringifyPrimitive(obj));
};

var isArray = Array.isArray || function (xs) {
  return Object.prototype.toString.call(xs) === '[object Array]';
};

function map (xs, f) {
  if (xs.map) return xs.map(f);
  var res = [];
  for (var i = 0; i < xs.length; i++) {
    res.push(f(xs[i], i));
  }
  return res;
}

var objectKeys = Object.keys || function (obj) {
  var res = [];
  for (var key in obj) {
    if (Object.prototype.hasOwnProperty.call(obj, key)) res.push(key);
  }
  return res;
};

},{}],116:[function(require,module,exports){
'use strict';

exports.decode = exports.parse = require('./decode');
exports.encode = exports.stringify = require('./encode');

},{"./decode":114,"./encode":115}],117:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.

'use strict';

/*<replacement>*/

var pna = require('process-nextick-args');
/*</replacement>*/

/*<replacement>*/
var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) {
    keys.push(key);
  }return keys;
};
/*</replacement>*/

module.exports = Duplex;

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var Readable = require('./_stream_readable');
var Writable = require('./_stream_writable');

util.inherits(Duplex, Readable);

{
  // avoid scope creep, the keys array can then be collected
  var keys = objectKeys(Writable.prototype);
  for (var v = 0; v < keys.length; v++) {
    var method = keys[v];
    if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
  }
}

function Duplex(options) {
  if (!(this instanceof Duplex)) return new Duplex(options);

  Readable.call(this, options);
  Writable.call(this, options);

  if (options && options.readable === false) this.readable = false;

  if (options && options.writable === false) this.writable = false;

  this.allowHalfOpen = true;
  if (options && options.allowHalfOpen === false) this.allowHalfOpen = false;

  this.once('end', onend);
}

Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function () {
    return this._writableState.highWaterMark;
  }
});

// the no-half-open enforcer
function onend() {
  // if we allow half-open state, or if the writable side ended,
  // then we're ok.
  if (this.allowHalfOpen || this._writableState.ended) return;

  // no more data can be written.
  // But allow more writes to happen in this tick.
  pna.nextTick(onEndNT, this);
}

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();

  pna.nextTick(cb, err);
};
},{"./_stream_readable":119,"./_stream_writable":121,"core-util-is":101,"inherits":106,"process-nextick-args":111}],118:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a passthrough stream.
// basically just the most minimal sort of Transform stream.
// Every written chunk gets output as-is.

'use strict';

module.exports = PassThrough;

var Transform = require('./_stream_transform');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

util.inherits(PassThrough, Transform);

function PassThrough(options) {
  if (!(this instanceof PassThrough)) return new PassThrough(options);

  Transform.call(this, options);
}

PassThrough.prototype._transform = function (chunk, encoding, cb) {
  cb(null, chunk);
};
},{"./_stream_transform":120,"core-util-is":101,"inherits":106}],119:[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.

'use strict';

/*<replacement>*/

var pna = require('process-nextick-args');
/*</replacement>*/

module.exports = Readable;

/*<replacement>*/
var isArray = require('isarray');
/*</replacement>*/

/*<replacement>*/
var Duplex;
/*</replacement>*/

Readable.ReadableState = ReadableState;

/*<replacement>*/
var EE = require('events').EventEmitter;

var EElistenerCount = function (emitter, type) {
  return emitter.listeners(type).length;
};
/*</replacement>*/

/*<replacement>*/
var Stream = require('./internal/streams/stream');
/*</replacement>*/

/*<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;
}

/*</replacement>*/

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

/*<replacement>*/
var debugUtil = require('util');
var debug = void 0;
if (debugUtil && debugUtil.debuglog) {
  debug = debugUtil.debuglog('stream');
} else {
  debug = function () {};
}
/*</replacement>*/

var BufferList = require('./internal/streams/BufferList');
var destroyImpl = require('./internal/streams/destroy');
var StringDecoder;

util.inherits(Readable, Stream);

var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume'];

function prependListener(emitter, event, fn) {
  // Sadly this is not cacheable as some libraries bundle their own
  // event emitter implementation with them.
  if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn);

  // This is a hack to make sure that our error handler is attached before any
  // userland ones.  NEVER DO THIS. This is here only because this code needs
  // to continue to work with older versions of Node.js that do not include
  // the prependListener() method. The goal is to eventually remove this hack.
  if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
}

function ReadableState(options, stream) {
  Duplex = Duplex || require('./_stream_duplex');

  options = options || {};

  // Duplex streams are both readable and writable, but share
  // the same options object.
  // However, some cases require setting options to different
  // values for the readable and the writable sides of the duplex stream.
  // These options can be provided separately as readableXXX and writableXXX.
  var isDuplex = stream instanceof Duplex;

  // object stream flag. Used to make read(n) ignore n and to
  // make all the buffer merging and length checks go away
  this.objectMode = !!options.objectMode;

  if (isDuplex) this.objectMode = this.objectMode || !!options.readableObjectMode;

  // the point at which it stops calling _read() to fill the buffer
  // Note: 0 is a valid value, means "don't call _read preemptively ever"
  var hwm = options.highWaterMark;
  var readableHwm = options.readableHighWaterMark;
  var defaultHwm = this.objectMode ? 16 : 16 * 1024;

  if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (readableHwm || readableHwm === 0)) this.highWaterMark = readableHwm;else this.highWaterMark = defaultHwm;

  // cast to ints.
  this.highWaterMark = Math.floor(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
  // array.shift()
  this.buffer = new BufferList();
  this.length = 0;
  this.pipes = null;
  this.pipesCount = 0;
  this.flowing = null;
  this.ended = false;
  this.endEmitted = false;
  this.reading = false;

  // a flag to be able to tell if the event 'readable'/'data' is emitted
  // immediately, or on a later tick.  We set this to true at first, because
  // any actions that shouldn't happen until "later" should generally also
  // not happen before the first read call.
  this.sync = true;

  // whenever we return null, then we set a flag to say
  // that we're awaiting a 'readable' event emission.
  this.needReadable = false;
  this.emittedReadable = false;
  this.readableListening = false;
  this.resumeScheduled = false;

  // has it been destroyed
  this.destroyed = false;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // the number of writers that are awaiting a drain event in .pipe()s
  this.awaitDrain = 0;

  // if true, a maybeReadMore has been scheduled
  this.readingMore = false;

  this.decoder = null;
  this.encoding = null;
  if (options.encoding) {
    if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
    this.decoder = new StringDecoder(options.encoding);
    this.encoding = options.encoding;
  }
}

function Readable(options) {
  Duplex = Duplex || require('./_stream_duplex');

  if (!(this instanceof Readable)) return new Readable(options);

  this._readableState = new ReadableState(options, this);

  // legacy
  this.readable = true;

  if (options) {
    if (typeof options.read === 'function') this._read = options.read;

    if (typeof options.destroy === 'function') this._destroy = options.destroy;
  }

  Stream.call(this);
}

Object.defineProperty(Readable.prototype, 'destroyed', {
  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;
    }
  } else {
    skipChunkCheck = true;
  }

  return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);
};

// Unshift should *always* be something directly out of read()
Readable.prototype.unshift = function (chunk) {
  return readableAddChunk(this, chunk, null, true, false);
};

function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
  var state = stream._readableState;
  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);
      }

      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);
        } else {
          addChunk(stream, state, chunk, false);
        }
      }
    } 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,
// such as the repl.  Also, if the push() triggered a
// readable event, and the user called read(largeNumber) such that
// needReadable was set, then we ought to push more, so that another
// 'readable' event will be triggered.
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;
  this._readableState.decoder = new StringDecoder(enc);
  this._readableState.encoding = enc;
  return this;
};

// Don't raise the hwm > 8MB
var MAX_HWM = 0x800000;
function computeNewHighWaterMark(n) {
  if (n >= MAX_HWM) {
    n = MAX_HWM;
  } else {
    // Get the next highest power of 2 to prevent increasing hwm excessively in
    // tiny amounts
    n--;
    n |= n >>> 1;
    n |= n >>> 2;
    n |= n >>> 4;
    n |= n >>> 8;
    n |= n >>> 16;
    n++;
  }
  return n;
}

// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function howMuchToRead(n, state) {
  if (n <= 0 || state.length === 0 && state.ended) return 0;
  if (state.objectMode) return 1;
  if (n !== n) {
    // Only flow one buffer at a time
    if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;
  }
  // If we're asking for more than the current hwm, then raise the hwm.
  if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);
  if (n <= state.length) return n;
  // Don't have enough
  if (!state.ended) {
    state.needReadable = true;
    return 0;
  }
  return state.length;
}

// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function (n) {
  debug('read', n);
  n = parseInt(n, 10);
  var state = this._readableState;
  var nOrig = n;

  if (n !== 0) state.emittedReadable = false;

  // if we're doing read(0) to trigger a readable event, but we
  // already have a bunch of data in the buffer, then just trigger
  // the 'readable' event and move on.
  if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) {
    debug('read: emitReadable', state.length, state.ended);
    if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);
    return null;
  }

  n = howMuchToRead(n, state);

  // if we've ended, and we're now clear, then finish it up.
  if (n === 0 && state.ended) {
    if (state.length === 0) endReadable(this);
    return null;
  }

  // All the actual chunk generation logic needs to be
  // *below* the call to _read.  The reason is that in certain
  // synthetic stream cases, such as passthrough streams, _read
  // may be a completely synchronous operation which may change
  // the state of the read buffer, providing enough data when
  // before there was *not* enough.
  //
  // So, the steps are:
  // 1. Figure out what the state of things will be after we do
  // a read from the buffer.
  //
  // 2. If that resulting state will trigger a _read, then call _read.
  // Note that this may be asynchronous, or synchronous.  Yes, it is
  // deeply ugly to write APIs this way, but that still doesn't mean
  // that the Readable class should behave improperly, as streams are
  // designed to be sync/async agnostic.
  // Take note if the _read call is sync or async (ie, if the read call
  // has returned yet), so that we know whether or not it's safe to emit
  // 'readable' etc.
  //
  // 3. Actually pull the requested chunks out of the buffer and return.

  // if we need a readable event, then we need to do some reading.
  var doRead = state.needReadable;
  debug('need readable', doRead);

  // if we currently have less than the highWaterMark, then also read some
  if (state.length === 0 || state.length - n < state.highWaterMark) {
    doRead = true;
    debug('length less than watermark', doRead);
  }

  // however, if we've ended, then there's no point, and if we're already
  // reading, then it's unnecessary.
  if (state.ended || state.reading) {
    doRead = false;
    debug('reading or ended', doRead);
  } else if (doRead) {
    debug('do read');
    state.reading = true;
    state.sync = true;
    // if the length is currently zero, then we *need* a readable event.
    if (state.length === 0) state.needReadable = true;
    // call internal read method
    this._read(state.highWaterMark);
    state.sync = false;
    // If _read pushed data synchronously, then `reading` will be false,
    // and we need to re-evaluate how much data we can return to the user.
    if (!state.reading) n = howMuchToRead(nOrig, state);
  }

  var ret;
  if (n > 0) ret = fromList(n, state);else ret = null;

  if (ret === null) {
    state.needReadable = true;
    n = 0;
  } else {
    state.length -= n;
  }

  if (state.length === 0) {
    // If we have nothing in the buffer, then we want to know
    // as soon as we *do* get something into the buffer.
    if (!state.ended) state.needReadable = true;

    // If we tried to read() past the EOF, then emit end on the next tick.
    if (nOrig !== n && state.ended) endReadable(this);
  }

  if (ret !== null) this.emit('data', ret);

  return ret;
};

function onEofChunk(stream, state) {
  if (state.ended) return;
  if (state.decoder) {
    var chunk = state.decoder.end();
    if (chunk && chunk.length) {
      state.buffer.push(chunk);
      state.length += state.objectMode ? 1 : chunk.length;
    }
  }
  state.ended = true;

  // emit 'readable' now to make sure it gets picked up.
  emitReadable(stream);
}

// Don't emit readable right away in sync mode, because this can trigger
// another read() call => stack overflow.  This way, it might trigger
// a nextTick recursion warning, but that's not so bad.
function emitReadable(stream) {
  var state = stream._readableState;
  state.needReadable = false;
  if (!state.emittedReadable) {
    debug('emitReadable', state.flowing);
    state.emittedReadable = true;
    if (state.sync) pna.nextTick(emitReadable_, stream);else emitReadable_(stream);
  }
}

function emitReadable_(stream) {
  debug('emit readable');
  stream.emit('readable');
  flow(stream);
}

// at this point, the user has presumably seen the 'readable' event,
// and called read() to consume some data.  that may have triggered
// in turn another _read(n) call, in which case reading = true if
// it's in progress.
// However, if we're not ended, or reading, and the length < hwm,
// then go ahead and try to read some more preemptively.
function maybeReadMore(stream, state) {
  if (!state.readingMore) {
    state.readingMore = true;
    pna.nextTick(maybeReadMore_, stream, state);
  }
}

function maybeReadMore_(stream, state) {
  var len = state.length;
  while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) {
    debug('maybeReadMore read 0');
    stream.read(0);
    if (len === state.length)
      // didn't get any data, stop spinning.
      break;else len = state.length;
  }
  state.readingMore = false;
}

// abstract method.  to be overridden in specific implementation classes.
// call cb(er, data) where data is <= n in length.
// for virtual (non-string, non-buffer) streams, "length" is somewhat
// arbitrary, and perhaps not very meaningful.
Readable.prototype._read = function (n) {
  this.emit('error', new Error('_read() is not implemented'));
};

Readable.prototype.pipe = function (dest, pipeOpts) {
  var src = this;
  var state = this._readableState;

  switch (state.pipesCount) {
    case 0:
      state.pipes = dest;
      break;
    case 1:
      state.pipes = [state.pipes, dest];
      break;
    default:
      state.pipes.push(dest);
      break;
  }
  state.pipesCount += 1;
  debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);

  var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;

  var endFn = doEnd ? onend : unpipe;
  if (state.endEmitted) pna.nextTick(endFn);else src.once('end', endFn);

  dest.on('unpipe', onunpipe);
  function onunpipe(readable, unpipeInfo) {
    debug('onunpipe');
    if (readable === src) {
      if (unpipeInfo && unpipeInfo.hasUnpiped === false) {
        unpipeInfo.hasUnpiped = true;
        cleanup();
      }
    }
  }

  function onend() {
    debug('onend');
    dest.end();
  }

  // when the dest drains, it reduces the awaitDrain counter
  // on the source.  This would be more elegant with a .once()
  // handler in flow(), but adding and removing repeatedly is
  // too slow.
  var ondrain = pipeOnDrain(src);
  dest.on('drain', ondrain);

  var cleanedUp = false;
  function cleanup() {
    debug('cleanup');
    // cleanup event handlers once the pipe is broken
    dest.removeListener('close', onclose);
    dest.removeListener('finish', onfinish);
    dest.removeListener('drain', ondrain);
    dest.removeListener('error', onerror);
    dest.removeListener('unpipe', onunpipe);
    src.removeListener('end', onend);
    src.removeListener('end', unpipe);
    src.removeListener('data', ondata);

    cleanedUp = true;

    // if the reader is waiting for a drain event from this
    // specific writer, then it would cause it to never start
    // flowing again.
    // So, if this is awaiting a drain, then we just call it now.
    // If we don't know, then assume that we are waiting for one.
    if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
  }

  // If the user pushes more data while we're writing to dest then we'll end up
  // in ondata again. However, we only want to increase awaitDrain once because
  // dest will only emit one 'drain' event for the multiple writes.
  // => Introduce a guard on increasing awaitDrain.
  var increasedAwaitDrain = false;
  src.on('data', ondata);
  function ondata(chunk) {
    debug('ondata');
    increasedAwaitDrain = false;
    var ret = dest.write(chunk);
    if (false === ret && !increasedAwaitDrain) {
      // If the user unpiped during `dest.write()`, it is possible
      // to get stuck in a permanently paused state if that write
      // also returned false.
      // => Check whether `dest` is still a piping destination.
      if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
        debug('false write response, pause', src._readableState.awaitDrain);
        src._readableState.awaitDrain++;
        increasedAwaitDrain = true;
      }
      src.pause();
    }
  }

  // if the dest has an error, then stop piping into it.
  // however, don't suppress the throwing behavior for this.
  function onerror(er) {
    debug('onerror', er);
    unpipe();
    dest.removeListener('error', onerror);
    if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er);
  }

  // Make sure our error handler is attached before userland ones.
  prependListener(dest, 'error', onerror);

  // Both close and finish should trigger unpipe, but only once.
  function onclose() {
    dest.removeListener('finish', onfinish);
    unpipe();
  }
  dest.once('close', onclose);
  function onfinish() {
    debug('onfinish');
    dest.removeListener('close', onclose);
    unpipe();
  }
  dest.once('finish', onfinish);

  function unpipe() {
    debug('unpipe');
    src.unpipe(dest);
  }

  // tell the dest that it's being piped to
  dest.emit('pipe', src);

  // start the flow if it hasn't been started already.
  if (!state.flowing) {
    debug('pipe resume');
    src.resume();
  }

  return dest;
};

function pipeOnDrain(src) {
  return function () {
    var state = src._readableState;
    debug('pipeOnDrain', state.awaitDrain);
    if (state.awaitDrain) state.awaitDrain--;
    if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
      state.flowing = true;
      flow(src);
    }
  };
}

Readable.prototype.unpipe = function (dest) {
  var state = this._readableState;
  var unpipeInfo = { hasUnpiped: false };

  // if we're not piping anywhere, then do nothing.
  if (state.pipesCount === 0) return this;

  // just one destination.  most common case.
  if (state.pipesCount === 1) {
    // passed in one, but it's not the right one.
    if (dest && dest !== state.pipes) return this;

    if (!dest) dest = state.pipes;

    // got a match.
    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;
    if (dest) dest.emit('unpipe', this, unpipeInfo);
    return this;
  }

  // slow case. multiple pipe destinations.

  if (!dest) {
    // remove all.
    var dests = state.pipes;
    var len = state.pipesCount;
    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;

    for (var i = 0; i < len; i++) {
      dests[i].emit('unpipe', this, unpipeInfo);
    }return this;
  }

  // try to find the right one.
  var index = indexOf(state.pipes, dest);
  if (index === -1) return this;

  state.pipes.splice(index, 1);
  state.pipesCount -= 1;
  if (state.pipesCount === 1) state.pipes = state.pipes[0];

  dest.emit('unpipe', this, unpipeInfo);

  return this;
};

// set up data events if they are asked for
// Ensure readable listeners eventually get something
Readable.prototype.on = function (ev, fn) {
  var res = Stream.prototype.on.call(this, ev, fn);

  if (ev === 'data') {
    // Start flowing on next tick if stream isn't explicitly paused
    if (this._readableState.flowing !== false) this.resume();
  } else if (ev === 'readable') {
    var state = this._readableState;
    if (!state.endEmitted && !state.readableListening) {
      state.readableListening = state.needReadable = true;
      state.emittedReadable = false;
      if (!state.reading) {
        pna.nextTick(nReadingNextTick, this);
      } else if (state.length) {
        emitReadable(this);
      }
    }
  }

  return res;
};
Readable.prototype.addListener = Readable.prototype.on;

function nReadingNextTick(self) {
  debug('readable nexttick read 0');
  self.read(0);
}

// pause() and resume() are remnants of the legacy readable stream API
// If the user uses them, then switch into old mode.
Readable.prototype.resume = function () {
  var state = this._readableState;
  if (!state.flowing) {
    debug('resume');
    state.flowing = true;
    resume(this, state);
  }
  return this;
};

function resume(stream, state) {
  if (!state.resumeScheduled) {
    state.resumeScheduled = true;
    pna.nextTick(resume_, stream, state);
  }
}

function resume_(stream, state) {
  if (!state.reading) {
    debug('resume read 0');
    stream.read(0);
  }

  state.resumeScheduled = false;
  state.awaitDrain = 0;
  stream.emit('resume');
  flow(stream);
  if (state.flowing && !state.reading) stream.read(0);
}

Readable.prototype.pause = function () {
  debug('call pause flowing=%j', this._readableState.flowing);
  if (false !== this._readableState.flowing) {
    debug('pause');
    this._readableState.flowing = false;
    this.emit('pause');
  }
  return this;
};

function flow(stream) {
  var state = stream._readableState;
  debug('flow', state.flowing);
  while (state.flowing && stream.read() !== null) {}
}

// wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.
Readable.prototype.wrap = function (stream) {
  var _this = this;

  var state = this._readableState;
  var paused = false;

  stream.on('end', function () {
    debug('wrapped end');
    if (state.decoder && !state.ended) {
      var chunk = state.decoder.end();
      if (chunk && chunk.length) _this.push(chunk);
    }

    _this.push(null);
  });

  stream.on('data', function (chunk) {
    debug('wrapped data');
    if (state.decoder) chunk = state.decoder.write(chunk);

    // don't skip over falsy values in objectMode
    if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;

    var ret = _this.push(chunk);
    if (!ret) {
      paused = true;
      stream.pause();
    }
  });

  // proxy all the other methods.
  // important when wrapping filters and duplexes.
  for (var i in stream) {
    if (this[i] === undefined && typeof stream[i] === 'function') {
      this[i] = function (method) {
        return function () {
          return stream[method].apply(stream, arguments);
        };
      }(i);
    }
  }

  // proxy certain important events.
  for (var n = 0; n < kProxyEvents.length; n++) {
    stream.on(kProxyEvents[n], this.emit.bind(this, kProxyEvents[n]));
  }

  // when we try to consume some more bytes, simply unpause the
  // underlying stream.
  this._read = function (n) {
    debug('wrapped _read', n);
    if (paused) {
      paused = false;
      stream.resume();
    }
  };

  return this;
};

Object.defineProperty(Readable.prototype, 'readableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function () {
    return this._readableState.highWaterMark;
  }
});

// exposed for testing purposes only.
Readable._fromList = fromList;

// Pluck off n bytes from an array of buffers.
// Length is the combined lengths of all the buffers in the list.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function fromList(n, state) {
  // nothing buffered
  if (state.length === 0) return null;

  var ret;
  if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
    // read it all, truncate the list
    if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length);
    state.buffer.clear();
  } else {
    // read part of list
    ret = fromListPartial(n, state.buffer, state.decoder);
  }

  return ret;
}

// Extracts only enough buffered data to satisfy the amount requested.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function fromListPartial(n, list, hasStrings) {
  var ret;
  if (n < list.head.data.length) {
    // slice is the same for buffers and strings
    ret = list.head.data.slice(0, n);
    list.head.data = list.head.data.slice(n);
  } else if (n === list.head.data.length) {
    // first chunk is a perfect match
    ret = list.shift();
  } else {
    // result spans more than one buffer
    ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list);
  }
  return ret;
}

// Copies a specified amount of characters from the list of buffered data
// chunks.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function copyFromBufferString(n, list) {
  var p = list.head;
  var c = 1;
  var ret = p.data;
  n -= ret.length;
  while (p = p.next) {
    var str = p.data;
    var nb = n > str.length ? str.length : n;
    if (nb === str.length) ret += str;else ret += str.slice(0, n);
    n -= nb;
    if (n === 0) {
      if (nb === str.length) {
        ++c;
        if (p.next) list.head = p.next;else list.head = list.tail = null;
      } else {
        list.head = p;
        p.data = str.slice(nb);
      }
      break;
    }
    ++c;
  }
  list.length -= c;
  return ret;
}

// Copies a specified amount of bytes from the list of buffered data chunks.
// 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 p = list.head;
  var c = 1;
  p.data.copy(ret);
  n -= p.data.length;
  while (p = p.next) {
    var buf = p.data;
    var nb = n > buf.length ? buf.length : n;
    buf.copy(ret, ret.length - n, 0, nb);
    n -= nb;
    if (n === 0) {
      if (nb === buf.length) {
        ++c;
        if (p.next) list.head = p.next;else list.head = list.tail = null;
      } else {
        list.head = p;
        p.data = buf.slice(nb);
      }
      break;
    }
    ++c;
  }
  list.length -= c;
  return ret;
}

function endReadable(stream) {
  var state = stream._readableState;

  // If we get here before consuming all the bytes, then that is a
  // bug in node.  Should never happen.
  if (state.length > 0) throw new Error('"endReadable()" called on non-empty stream');

  if (!state.endEmitted) {
    state.ended = true;
    pna.nextTick(endReadableNT, state, stream);
  }
}

function endReadableNT(state, stream) {
  // Check that we didn't get one last unshift.
  if (!state.endEmitted && state.length === 0) {
    state.endEmitted = true;
    stream.readable = false;
    stream.emit('end');
  }
}

function indexOf(xs, x) {
  for (var i = 0, l = xs.length; i < l; i++) {
    if (xs[i] === x) return i;
  }
  return -1;
}
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./_stream_duplex":117,"./internal/streams/BufferList":122,"./internal/streams/destroy":123,"./internal/streams/stream":124,"_process":112,"core-util-is":101,"events":102,"inherits":106,"isarray":108,"process-nextick-args":111,"safe-buffer":143,"string_decoder/":159,"util":2}],120:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a transform stream is a readable/writable stream where you do
// something with the data.  Sometimes it's called a "filter",
// but that's not a great name for it, since that implies a thing where
// some bits pass through, and others are simply ignored.  (That would
// be a valid example of a transform, of course.)
//
// While the output is causally related to the input, it's not a
// necessarily symmetric or synchronous transformation.  For example,
// a zlib stream might take multiple plain-text writes(), and then
// emit a single compressed chunk some time in the future.
//
// Here's how this works:
//
// The Transform stream has all the aspects of the readable and writable
// stream classes.  When you write(chunk), that calls _write(chunk,cb)
// internally, and returns false if there's a lot of pending writes
// buffered up.  When you call read(), that calls _read(n) until
// there's enough pending readable data buffered up.
//
// In a transform stream, the written data is placed in a buffer.  When
// _read(n) is called, it transforms the queued up data, calling the
// buffered _write cb's as it consumes chunks.  If consuming a single
// written chunk would result in multiple output chunks, then the first
// outputted bit calls the readcb, and subsequent chunks just go into
// the read buffer, and will cause it to emit 'readable' if necessary.
//
// This way, back-pressure is actually determined by the reading side,
// since _read has to be called to start processing a new chunk.  However,
// a pathological inflate type of transform can cause excessive buffering
// here.  For example, imagine a stream where every byte of input is
// interpreted as an integer from 0-255, and then results in that many
// bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in
// 1kb of data being output.  In this case, you could write a very small
// amount of input, and end up with a very large amount of output.  In
// such a pathological inflating mechanism, there'd be no way to tell
// the system to stop doing the transform.  A single 4MB write could
// cause the system to run out of memory.
//
// However, even in such a pathological case, only a single written chunk
// would be consumed, and then the rest would wait (un-transformed) until
// the results of the previous transformed chunk were consumed.

'use strict';

module.exports = Transform;

var Duplex = require('./_stream_duplex');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

util.inherits(Transform, Duplex);

function afterTransform(er, data) {
  var ts = this._transformState;
  ts.transforming = false;

  var cb = ts.writecb;

  if (!cb) {
    return this.emit('error', new Error('write callback called multiple times'));
  }

  ts.writechunk = null;
  ts.writecb = null;

  if (data != null) // single equals check for both `null` and `undefined`
    this.push(data);

  cb(er);

  var rs = this._readableState;
  rs.reading = false;
  if (rs.needReadable || rs.length < rs.highWaterMark) {
    this._read(rs.highWaterMark);
  }
}

function Transform(options) {
  if (!(this instanceof Transform)) return new Transform(options);

  Duplex.call(this, options);

  this._transformState = {
    afterTransform: afterTransform.bind(this),
    needTransform: false,
    transforming: false,
    writecb: null,
    writechunk: null,
    writeencoding: null
  };

  // start out asking for a readable event once data is transformed.
  this._readableState.needReadable = true;

  // we have implemented the _read method, and done the other things
  // that Readable wants before the first _read call, so unset the
  // sync guard flag.
  this._readableState.sync = false;

  if (options) {
    if (typeof options.transform === 'function') this._transform = options.transform;

    if (typeof options.flush === 'function') this._flush = options.flush;
  }

  // When the writable side finishes, then flush out anything remaining.
  this.on('prefinish', prefinish);
}

function prefinish() {
  var _this = this;

  if (typeof this._flush === 'function') {
    this._flush(function (er, data) {
      done(_this, er, data);
    });
  } else {
    done(this, null, null);
  }
}

Transform.prototype.push = function (chunk, encoding) {
  this._transformState.needTransform = false;
  return Duplex.prototype.push.call(this, chunk, encoding);
};

// This is the part where you do stuff!
// override this function in implementation classes.
// 'chunk' is an input chunk.
//
// Call `push(newChunk)` to pass along transformed output
// to the readable side.  You may call 'push' zero or more times.
//
// Call `cb(err)` when you are done with this chunk.  If you pass
// an error, then that'll put the hurt on the whole operation.  If you
// never call cb(), then you'll never get another chunk.
Transform.prototype._transform = function (chunk, encoding, cb) {
  throw new Error('_transform() is not implemented');
};

Transform.prototype._write = function (chunk, encoding, cb) {
  var ts = this._transformState;
  ts.writecb = cb;
  ts.writechunk = chunk;
  ts.writeencoding = encoding;
  if (!ts.transforming) {
    var rs = this._readableState;
    if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
  }
};

// Doesn't matter what the args are here.
// _transform does all the work.
// That we got here means that the readable side wants more data.
Transform.prototype._read = function (n) {
  var ts = this._transformState;

  if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
    ts.transforming = true;
    this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
  } else {
    // mark that we need a transform, so that any data that comes in
    // will get processed, now that we've asked for it.
    ts.needTransform = true;
  }
};

Transform.prototype._destroy = function (err, cb) {
  var _this2 = this;

  Duplex.prototype._destroy.call(this, err, function (err2) {
    cb(err2);
    _this2.emit('close');
  });
};

function done(stream, er, data) {
  if (er) return stream.emit('error', er);

  if (data != null) // single equals check for both `null` and `undefined`
    stream.push(data);

  // if there's nothing in the write buffer, then that means
  // that nothing more will ever be provided
  if (stream._writableState.length) throw new Error('Calling transform done when ws.length != 0');

  if (stream._transformState.transforming) throw new Error('Calling transform done when still transforming');

  return stream.push(null);
}
},{"./_stream_duplex":117,"core-util-is":101,"inherits":106}],121:[function(require,module,exports){
(function (process,global,setImmediate){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// A bit simpler than readable streams.
// Implement an async ._write(chunk, encoding, cb), and it'll handle all
// the drain event emission and buffering.

'use strict';

/*<replacement>*/

var pna = 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 asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : pna.nextTick;
/*</replacement>*/

/*<replacement>*/
var Duplex;
/*</replacement>*/

Writable.WritableState = WritableState;

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

/*<replacement>*/
var internalUtil = {
  deprecate: require('util-deprecate')
};
/*</replacement>*/

/*<replacement>*/
var Stream = require('./internal/streams/stream');
/*</replacement>*/

/*<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;
}

/*</replacement>*/

var destroyImpl = require('./internal/streams/destroy');

util.inherits(Writable, Stream);

function nop() {}

function WritableState(options, stream) {
  Duplex = Duplex || require('./_stream_duplex');

  options = options || {};

  // Duplex streams are both readable and writable, but share
  // the same options object.
  // However, some cases require setting options to different
  // values for the readable and the writable sides of the duplex stream.
  // These options can be provided separately as readableXXX and writableXXX.
  var isDuplex = stream instanceof Duplex;

  // object stream flag to indicate whether or not this stream
  // contains buffers or objects.
  this.objectMode = !!options.objectMode;

  if (isDuplex) this.objectMode = this.objectMode || !!options.writableObjectMode;

  // the point at which write() starts returning false
  // Note: 0 is a valid value, means that we always return false if
  // the entire buffer is not flushed immediately on write()
  var hwm = options.highWaterMark;
  var writableHwm = options.writableHighWaterMark;
  var defaultHwm = this.objectMode ? 16 : 16 * 1024;

  if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (writableHwm || writableHwm === 0)) this.highWaterMark = writableHwm;else this.highWaterMark = defaultHwm;

  // cast to ints.
  this.highWaterMark = Math.floor(this.highWaterMark);

  // if _final has been called
  this.finalCalled = false;

  // drain event flag.
  this.needDrain = false;
  // at the start of calling end()
  this.ending = false;
  // when end() has been called, and returned
  this.ended = false;
  // when 'finish' is emitted
  this.finished = false;

  // has it been destroyed
  this.destroyed = false;

  // should we decode strings into buffers before passing to _write?
  // this is here so that some node-core streams can optimize string
  // handling at a lower level.
  var noDecode = options.decodeStrings === false;
  this.decodeStrings = !noDecode;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // not an actual buffer we keep track of, but a measurement
  // of how much we're waiting to get pushed to some underlying
  // socket or file.
  this.length = 0;

  // a flag to see when we're in the middle of a write.
  this.writing = false;

  // when true all writes will be buffered until .uncork() call
  this.corked = 0;

  // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, because any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.
  this.sync = true;

  // a flag to know if we're processing previously buffered items, which
  // may call the _write() callback in the same tick, so that we don't
  // end up in an overlapped onwrite situation.
  this.bufferProcessing = false;

  // the callback that's passed to _write(chunk,cb)
  this.onwrite = function (er) {
    onwrite(stream, er);
  };

  // the callback that the user supplies to write(chunk,encoding,cb)
  this.writecb = null;

  // the amount that is being written when _write is called.
  this.writelen = 0;

  this.bufferedRequest = null;
  this.lastBufferedRequest = null;

  // number of pending user-supplied write callbacks
  // this must be 0 before 'finish' can be emitted
  this.pendingcb = 0;

  // emit prefinish if the only thing we're waiting for is _write cbs
  // This is relevant for synchronous Transform streams
  this.prefinished = false;

  // True if the error was already emitted and should not be thrown again
  this.errorEmitted = false;

  // count buffered requests
  this.bufferedRequestCount = 0;

  // allocate the first CorkedRequest, there is always
  // one allocated and free to use, and we maintain at most two
  this.corkedRequestsFree = new CorkedRequest(this);
}

WritableState.prototype.getBuffer = function getBuffer() {
  var current = this.bufferedRequest;
  var out = [];
  while (current) {
    out.push(current);
    current = current.next;
  }
  return out;
};

(function () {
  try {
    Object.defineProperty(WritableState.prototype, 'buffer', {
      get: internalUtil.deprecate(function () {
        return this.getBuffer();
      }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')
    });
  } catch (_) {}
})();

// Test _writableState for inheritance to account for Duplex streams,
// whose prototype chain only points to Readable.
var realHasInstance;
if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {
  realHasInstance = Function.prototype[Symbol.hasInstance];
  Object.defineProperty(Writable, Symbol.hasInstance, {
    value: function (object) {
      if (realHasInstance.call(this, object)) return true;
      if (this !== Writable) return false;

      return object && object._writableState instanceof WritableState;
    }
  });
} else {
  realHasInstance = function (object) {
    return object instanceof this;
  };
}

function Writable(options) {
  Duplex = Duplex || require('./_stream_duplex');

  // Writable ctor is applied to Duplexes, too.
  // `realHasInstance` is necessary because using plain `instanceof`
  // would return false, as no `_writableState` property is attached.

  // Trying to use the custom `instanceof` for Writable here will also break the
  // Node.js LazyTransform implementation, which has a non-trivial getter for
  // `_writableState` that would lead to infinite recursion.
  if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) {
    return new Writable(options);
  }

  this._writableState = new WritableState(options, this);

  // legacy.
  this.writable = true;

  if (options) {
    if (typeof options.write === 'function') this._write = options.write;

    if (typeof options.writev === 'function') this._writev = options.writev;

    if (typeof options.destroy === 'function') this._destroy = options.destroy;

    if (typeof options.final === 'function') this._final = options.final;
  }

  Stream.call(this);
}

// Otherwise people can pipe Writable streams, which is just wrong.
Writable.prototype.pipe = function () {
  this.emit('error', new Error('Cannot pipe, not readable'));
};

function writeAfterEnd(stream, cb) {
  var er = new Error('write after end');
  // TODO: defer error events consistently everywhere, not just the cb
  stream.emit('error', er);
  pna.nextTick(cb, er);
}

// Checks that a user-supplied chunk is valid, especially for the particular
// mode the stream is in. Currently this means that `null` is never accepted
// and undefined/non-string values are only allowed in object mode.
function validChunk(stream, state, chunk, cb) {
  var valid = true;
  var er = false;

  if (chunk === null) {
    er = new TypeError('May not write null values to stream');
  } else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  if (er) {
    stream.emit('error', er);
    pna.nextTick(cb, er);
    valid = false;
  }
  return valid;
}

Writable.prototype.write = function (chunk, encoding, cb) {
  var state = this._writableState;
  var ret = false;
  var isBuf = !state.objectMode && _isUint8Array(chunk);

  if (isBuf && !Buffer.isBuffer(chunk)) {
    chunk = _uint8ArrayToBuffer(chunk);
  }

  if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;

  if (typeof cb !== 'function') cb = nop;

  if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {
    state.pendingcb++;
    ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);
  }

  return ret;
};

Writable.prototype.cork = function () {
  var state = this._writableState;

  state.corked++;
};

Writable.prototype.uncork = function () {
  var state = this._writableState;

  if (state.corked) {
    state.corked--;

    if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
  }
};

Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
  // node::ParseEncoding() requires lower case.
  if (typeof encoding === 'string') encoding = encoding.toLowerCase();
  if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding);
  this._writableState.defaultEncoding = encoding;
  return this;
};

function decodeChunk(state, chunk, encoding) {
  if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
    chunk = Buffer.from(chunk, encoding);
  }
  return chunk;
}

Object.defineProperty(Writable.prototype, 'writableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function () {
    return this._writableState.highWaterMark;
  }
});

// if we're already writing something, then just put this
// in the queue, and wait our turn.  Otherwise, call _write
// If we return false, then we need a drain event, so set that flag.
function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {
  if (!isBuf) {
    var newChunk = decodeChunk(state, chunk, encoding);
    if (chunk !== newChunk) {
      isBuf = true;
      encoding = 'buffer';
      chunk = newChunk;
    }
  }
  var len = state.objectMode ? 1 : chunk.length;

  state.length += len;

  var ret = state.length < state.highWaterMark;
  // we must ensure that previous needDrain will not be reset to false.
  if (!ret) state.needDrain = true;

  if (state.writing || state.corked) {
    var last = state.lastBufferedRequest;
    state.lastBufferedRequest = {
      chunk: chunk,
      encoding: encoding,
      isBuf: isBuf,
      callback: cb,
      next: null
    };
    if (last) {
      last.next = state.lastBufferedRequest;
    } else {
      state.bufferedRequest = state.lastBufferedRequest;
    }
    state.bufferedRequestCount += 1;
  } else {
    doWrite(stream, state, false, len, chunk, encoding, cb);
  }

  return ret;
}

function doWrite(stream, state, writev, len, chunk, encoding, cb) {
  state.writelen = len;
  state.writecb = cb;
  state.writing = true;
  state.sync = true;
  if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
  state.sync = false;
}

function onwriteError(stream, state, sync, er, cb) {
  --state.pendingcb;

  if (sync) {
    // defer the callback if we are being called synchronously
    // to avoid piling up things on the stack
    pna.nextTick(cb, er);
    // this can emit finish, and it will always happen
    // after error
    pna.nextTick(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);
  }
}

function onwriteStateUpdate(state) {
  state.writing = false;
  state.writecb = null;
  state.length -= state.writelen;
  state.writelen = 0;
}

function onwrite(stream, er) {
  var state = stream._writableState;
  var sync = state.sync;
  var cb = state.writecb;

  onwriteStateUpdate(state);

  if (er) onwriteError(stream, state, sync, er, cb);else {
    // Check if we're actually ready to finish, but don't emit yet
    var finished = needFinish(state);

    if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
      clearBuffer(stream, state);
    }

    if (sync) {
      /*<replacement>*/
      asyncWrite(afterWrite, stream, state, finished, cb);
      /*</replacement>*/
    } else {
      afterWrite(stream, state, finished, cb);
    }
  }
}

function afterWrite(stream, state, finished, cb) {
  if (!finished) onwriteDrain(stream, state);
  state.pendingcb--;
  cb();
  finishMaybe(stream, state);
}

// Must force callback to be called on nextTick, so that we don't
// emit 'drain' before the write() consumer gets the 'false' return
// value, and has a chance to attach a 'drain' listener.
function onwriteDrain(stream, state) {
  if (state.length === 0 && state.needDrain) {
    state.needDrain = false;
    stream.emit('drain');
  }
}

// if there's something in the buffer waiting, then process it
function clearBuffer(stream, state) {
  state.bufferProcessing = true;
  var entry = state.bufferedRequest;

  if (stream._writev && entry && entry.next) {
    // Fast case, write everything using _writev()
    var l = state.bufferedRequestCount;
    var buffer = new Array(l);
    var holder = state.corkedRequestsFree;
    holder.entry = entry;

    var count = 0;
    var allBuffers = true;
    while (entry) {
      buffer[count] = entry;
      if (!entry.isBuf) allBuffers = false;
      entry = entry.next;
      count += 1;
    }
    buffer.allBuffers = allBuffers;

    doWrite(stream, state, true, state.length, buffer, '', holder.finish);

    // doWrite is almost always async, defer these to save a bit of time
    // as the hot path ends with doWrite
    state.pendingcb++;
    state.lastBufferedRequest = null;
    if (holder.next) {
      state.corkedRequestsFree = holder.next;
      holder.next = null;
    } else {
      state.corkedRequestsFree = new CorkedRequest(state);
    }
    state.bufferedRequestCount = 0;
  } else {
    // Slow case, write chunks one-by-one
    while (entry) {
      var chunk = entry.chunk;
      var encoding = entry.encoding;
      var cb = entry.callback;
      var len = state.objectMode ? 1 : chunk.length;

      doWrite(stream, state, false, len, chunk, encoding, cb);
      entry = entry.next;
      state.bufferedRequestCount--;
      // if we didn't call the onwrite immediately, then
      // it means that we need to wait until it does.
      // also, that means that the chunk and cb are currently
      // being processed, so move the buffer counter past them.
      if (state.writing) {
        break;
      }
    }

    if (entry === null) state.lastBufferedRequest = null;
  }

  state.bufferedRequest = entry;
  state.bufferProcessing = false;
}

Writable.prototype._write = function (chunk, encoding, cb) {
  cb(new Error('_write() is not implemented'));
};

Writable.prototype._writev = null;

Writable.prototype.end = function (chunk, encoding, cb) {
  var state = this._writableState;

  if (typeof chunk === 'function') {
    cb = chunk;
    chunk = null;
    encoding = null;
  } else if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (chunk !== null && chunk !== undefined) this.write(chunk, encoding);

  // .end() fully uncorks
  if (state.corked) {
    state.corked = 1;
    this.uncork();
  }

  // ignore unnecessary end() calls.
  if (!state.ending && !state.finished) endWritable(this, state, 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);
    }
    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;
      pna.nextTick(callFinal, stream, state);
    } else {
      state.prefinished = true;
      stream.emit('prefinish');
    }
  }
}

function finishMaybe(stream, state) {
  var need = needFinish(state);
  if (need) {
    prefinish(stream, state);
    if (state.pendingcb === 0) {
      state.finished = true;
      stream.emit('finish');
    }
  }
  return need;
}

function endWritable(stream, state, cb) {
  state.ending = true;
  finishMaybe(stream, state);
  if (cb) {
    if (state.finished) pna.nextTick(cb);else stream.once('finish', cb);
  }
  state.ended = true;
  stream.writable = false;
}

function onCorkedFinish(corkReq, state, err) {
  var entry = corkReq.entry;
  corkReq.entry = null;
  while (entry) {
    var cb = entry.callback;
    state.pendingcb--;
    cb(err);
    entry = entry.next;
  }
  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 : {},require("timers").setImmediate)
},{"./_stream_duplex":117,"./internal/streams/destroy":123,"./internal/streams/stream":124,"_process":112,"core-util-is":101,"inherits":106,"process-nextick-args":111,"safe-buffer":143,"timers":160,"util-deprecate":164}],122:[function(require,module,exports){
'use strict';

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var Buffer = require('safe-buffer').Buffer;
var util = require('util');

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;
}();

if (util && util.inspect && util.inspect.custom) {
  module.exports.prototype[util.inspect.custom] = function () {
    var obj = util.inspect({ length: this.length });
    return this.constructor.name + ' ' + obj;
  };
}
},{"safe-buffer":143,"util":2}],123:[function(require,module,exports){
'use strict';

/*<replacement>*/

var pna = require('process-nextick-args');
/*</replacement>*/

// undocumented cb() API, needed for core, not for public API
function destroy(err, cb) {
  var _this = this;

  var readableDestroyed = this._readableState && this._readableState.destroyed;
  var writableDestroyed = this._writableState && this._writableState.destroyed;

  if (readableDestroyed || writableDestroyed) {
    if (cb) {
      cb(err);
    } else if (err && (!this._writableState || !this._writableState.errorEmitted)) {
      pna.nextTick(emitErrorNT, this, err);
    }
    return this;
  }

  // we set destroyed to true before firing error callbacks in order
  // to make it re-entrance safe in case destroy() is called within callbacks

  if (this._readableState) {
    this._readableState.destroyed = true;
  }

  // if this is a duplex stream mark the writable part as destroyed as well
  if (this._writableState) {
    this._writableState.destroyed = true;
  }

  this._destroy(err || null, function (err) {
    if (!cb && err) {
      pna.nextTick(emitErrorNT, _this, err);
      if (_this._writableState) {
        _this._writableState.errorEmitted = true;
      }
    } else if (cb) {
      cb(err);
    }
  });

  return this;
}

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
};
},{"process-nextick-args":111}],124:[function(require,module,exports){
module.exports = require('events').EventEmitter;

},{"events":102}],125:[function(require,module,exports){
exports = module.exports = require('./lib/_stream_readable.js');
exports.Stream = exports;
exports.Readable = exports;
exports.Writable = require('./lib/_stream_writable.js');
exports.Duplex = require('./lib/_stream_duplex.js');
exports.Transform = require('./lib/_stream_transform.js');
exports.PassThrough = require('./lib/_stream_passthrough.js');

},{"./lib/_stream_duplex.js":117,"./lib/_stream_passthrough.js":118,"./lib/_stream_readable.js":119,"./lib/_stream_transform.js":120,"./lib/_stream_writable.js":121}],126:[function(require,module,exports){
"use strict";

module.exports =
{
        // Output
        ABSOLUTE:      "absolute",
        PATH_RELATIVE: "pathRelative",
        ROOT_RELATIVE: "rootRelative",
        SHORTEST:      "shortest"
};

},{}],127:[function(require,module,exports){
"use strict";

var constants = require("./constants");



function formatAuth(urlObj, options)
{
        if (urlObj.auth && !options.removeAuth && (urlObj.extra.relation.maximumHost || options.output===constants.ABSOLUTE))
        {
                return urlObj.auth + "@";
        }
        
        return "";
}



function formatHash(urlObj, options)
{
        return urlObj.hash ? urlObj.hash : "";
}



function formatHost(urlObj, options)
{
        if (urlObj.host.full && (urlObj.extra.relation.maximumAuth || options.output===constants.ABSOLUTE))
        {
                return urlObj.host.full;
        }
        
        return "";
}



function formatPath(urlObj, options)
{
        var str = "";
        
        var absolutePath = urlObj.path.absolute.string;
        var relativePath = urlObj.path.relative.string;
        var resource = showResource(urlObj, options);
        
        if (urlObj.extra.relation.maximumHost || options.output===constants.ABSOLUTE || options.output===constants.ROOT_RELATIVE)
        {
                str = absolutePath;
        }
        else if (relativePath.length<=absolutePath.length && options.output===constants.SHORTEST || options.output===constants.PATH_RELATIVE)
        {
                str = relativePath;
                
                if (str === "")
                {
                        var query = showQuery(urlObj,options) && !!getQuery(urlObj,options);
                        
                        if (urlObj.extra.relation.maximumPath && !resource)
                        {
                                str = "./";
                        }
                        else if (urlObj.extra.relation.overridesQuery && !resource && !query)
                        {
                                str = "./";
                        }
                }
        }
        else
        {
                str = absolutePath;
        }
        
        if ( str==="/" && !resource && options.removeRootTrailingSlash && (!urlObj.extra.relation.minimumPort || options.output===constants.ABSOLUTE) )
        {
                str = "";
        }
        
        return str;
}



function formatPort(urlObj, options)
{
        if (urlObj.port && !urlObj.extra.portIsDefault && urlObj.extra.relation.maximumHost)
        {
                return ":" + urlObj.port;
        }
        
        return "";
}



function formatQuery(urlObj, options)
{
        return showQuery(urlObj,options) ? getQuery(urlObj, options) : "";
}



function formatResource(urlObj, options)
{
        return showResource(urlObj,options) ? urlObj.resource : "";
}



function formatScheme(urlObj, options)
{
        var str = "";
        
        if (urlObj.extra.relation.maximumHost || options.output===constants.ABSOLUTE)
        {
                if (!urlObj.extra.relation.minimumScheme || !options.schemeRelative || options.output===constants.ABSOLUTE)
                {
                        str += urlObj.scheme + "://";
                }
                else
                {
                        str += "//";
                }
        }
        
        return str;
}



function formatUrl(urlObj, options)
{
        var url = "";
        
        url += formatScheme(urlObj, options);
        url += formatAuth(urlObj, options);
        url += formatHost(urlObj, options);
        url += formatPort(urlObj, options);
        url += formatPath(urlObj, options);
        url += formatResource(urlObj, options);
        url += formatQuery(urlObj, options);
        url += formatHash(urlObj, options);
        
        return url;
}



function getQuery(urlObj, options)
{
        var stripQuery = options.removeEmptyQueries && urlObj.extra.relation.minimumPort;
        
        return urlObj.query.string[ stripQuery ? "stripped" : "full" ];
}



function showQuery(urlObj, options)
{
        return !urlObj.extra.relation.minimumQuery || options.output===constants.ABSOLUTE || options.output===constants.ROOT_RELATIVE;
}



function showResource(urlObj, options)
{
        var removeIndex = options.removeDirectoryIndexes && urlObj.extra.resourceIsIndex;
        var removeMatchingResource = urlObj.extra.relation.minimumResource && options.output!==constants.ABSOLUTE && options.output!==constants.ROOT_RELATIVE;
        
        return !!urlObj.resource && !removeMatchingResource && !removeIndex;
}



module.exports = formatUrl;

},{"./constants":126}],128:[function(require,module,exports){
"use strict";

var constants  = require("./constants");
var formatUrl  = require("./format");
var getOptions = require("./options");
var objUtils   = require("./util/object");
var parseUrl   = require("./parse");
var relateUrl  = require("./relate");



function RelateUrl(from, options)
{
        this.options = getOptions(options,
        {
                defaultPorts: {ftp:21, http:80, https:443},
                directoryIndexes: ["index.html"],
                ignore_www: false,
                output: RelateUrl.SHORTEST,
                rejectedSchemes: ["data","javascript","mailto"],
                removeAuth: false,
                removeDirectoryIndexes: true,
                removeEmptyQueries: false,
                removeRootTrailingSlash: true,
                schemeRelative: true,
                site: undefined,
                slashesDenoteHost: true
        });
        
        this.from = parseUrl.from(from, this.options, null);
}



/*
        Usage: instance=new RelateUrl(); instance.relate();
*/
RelateUrl.prototype.relate = function(from, to, options)
{
        // relate(to,options)
        if ( objUtils.isPlainObject(to) )
        {
                options = to;
                to = from;
                from = null;
        }
        // relate(to)
        else if (!to)
        {
                to = from;
                from = null;
        }
        
        options = getOptions(options, this.options);
        from = from || options.site;
        from = parseUrl.from(from, options, this.from);
        
        if (!from || !from.href)
        {
                throw new Error("from value not defined.");
        }
        else if (from.extra.hrefInfo.minimumPathOnly)
        {
                throw new Error("from value supplied is not absolute: "+from.href);
        }
        
        to = parseUrl.to(to, options);
        
        if (to.valid===false) return to.href;
        
        to = relateUrl(from, to, options);
        to = formatUrl(to, options);
        
        return to;
}



/*
        Usage: RelateUrl.relate();
*/
RelateUrl.relate = function(from, to, options)
{
        return new RelateUrl().relate(from, to, options);
}



// Make constants accessible from API
objUtils.shallowMerge(RelateUrl, constants);



module.exports = RelateUrl;

},{"./constants":126,"./format":127,"./options":129,"./parse":132,"./relate":139,"./util/object":141}],129:[function(require,module,exports){
"use strict";

var objUtils = require("./util/object");



function getOptions(options, defaults)
{
        if ( objUtils.isPlainObject(options) )
        {
                var newOptions = {};
                
                for (var i in defaults)
                {
                        if ( defaults.hasOwnProperty(i) )
                        {
                                if (options[i] !== undefined)
                                {
                                        newOptions[i] = mergeOption(options[i], defaults[i]);
                                }
                                else
                                {
                                        newOptions[i] = defaults[i];
                                }
                        }
                }
                
                return newOptions;
        }
        else
        {
                return defaults;
        }
}



function mergeOption(newValues, defaultValues)
{
        if (defaultValues instanceof Object && newValues instanceof Object)
        {
                if (defaultValues instanceof Array && newValues instanceof Array)
                {
                        return defaultValues.concat(newValues);
                }
                else
                {
                        return objUtils.shallowMerge(newValues, defaultValues);
                }
        }
        
        return newValues;
}



module.exports = getOptions;

},{"./util/object":141}],130:[function(require,module,exports){
"use strict";

function parseHost(urlObj, options)
{
        // TWEAK :: condition only for speed optimization
        if (options.ignore_www)
        {
                var host = urlObj.host.full;
                
                if (host)
                {
                        var stripped = host;
                        
                        if (host.indexOf("www.") === 0)
                        {
                                stripped = host.substr(4);
                        }
                        
                        urlObj.host.stripped = stripped;
                }
        }
}



module.exports = parseHost;

},{}],131:[function(require,module,exports){
"use strict";

function hrefInfo(urlObj)
{
        var minimumPathOnly     = (!urlObj.scheme && !urlObj.auth && !urlObj.host.full && !urlObj.port);
        var minimumResourceOnly = (minimumPathOnly && !urlObj.path.absolute.string);
        var minimumQueryOnly    = (minimumResourceOnly && !urlObj.resource);
        var minimumHashOnly     = (minimumQueryOnly && !urlObj.query.string.full.length);
        var empty               = (minimumHashOnly && !urlObj.hash);
        
        urlObj.extra.hrefInfo.minimumPathOnly     = minimumPathOnly;
        urlObj.extra.hrefInfo.minimumResourceOnly = minimumResourceOnly;
        urlObj.extra.hrefInfo.minimumQueryOnly    = minimumQueryOnly;
        urlObj.extra.hrefInfo.minimumHashOnly     = minimumHashOnly;
        urlObj.extra.hrefInfo.empty = empty;
}



module.exports = hrefInfo;

},{}],132:[function(require,module,exports){
"use strict";

var hrefInfo   = require("./hrefInfo");
var parseHost  = require("./host");
var parsePath  = require("./path");
var parsePort  = require("./port");
var parseQuery = require("./query");
var parseUrlString = require("./urlstring");
var pathUtils      = require("../util/path");



function parseFromUrl(url, options, fallback)
{
        if (url)
        {
                var urlObj = parseUrl(url, options);
                
                // Because the following occurs in the relate stage for "to" URLs,
                // such had to be mostly duplicated here
                
                var pathArray = pathUtils.resolveDotSegments(urlObj.path.absolute.array);
                
                urlObj.path.absolute.array  = pathArray;
                urlObj.path.absolute.string = "/" + pathUtils.join(pathArray);
                
                return urlObj;
        }
        else
        {
                return fallback;
        }
}



function parseUrl(url, options)
{
        var urlObj = parseUrlString(url, options);
        
        if (urlObj.valid===false) return urlObj;
        
        parseHost(urlObj, options);
        parsePort(urlObj, options);
        parsePath(urlObj, options);
        parseQuery(urlObj, options);
        hrefInfo(urlObj);
        
        return urlObj;
}



module.exports =
{
        from: parseFromUrl,
        to:   parseUrl
};

},{"../util/path":142,"./host":130,"./hrefInfo":131,"./path":133,"./port":134,"./query":135,"./urlstring":136}],133:[function(require,module,exports){
"use strict";

function isDirectoryIndex(resource, options)
{
        var verdict = false;
        
        options.directoryIndexes.every( function(index)
        {
                if (index === resource)
                {
                        verdict = true;
                        return false;
                }
                
                return true;
        });
        
        return verdict;
}



function parsePath(urlObj, options)
{
        var path = urlObj.path.absolute.string;
        
        if (path)
        {
                var lastSlash = path.lastIndexOf("/");
                
                if (lastSlash > -1)
                {
                        if (++lastSlash < path.length)
                        {
                                var resource = path.substr(lastSlash);
                                
                                if (resource!=="." && resource!=="..")
                                {
                                        urlObj.resource = resource;
                                        path = path.substr(0, lastSlash);
                                }
                                else
                                {
                                        path += "/";
                                }
                        }
                        
                        urlObj.path.absolute.string = path;
                        urlObj.path.absolute.array = splitPath(path);
                }
                else if (path==="." || path==="..")
                {
                        // "..?var", "..#anchor", etc ... not "..index.html"
                        path += "/";
                        
                        urlObj.path.absolute.string = path;
                        urlObj.path.absolute.array = splitPath(path);
                }
                else
                {
                        // Resource-only
                        urlObj.resource = path;
                        urlObj.path.absolute.string = null;
                }
                
                urlObj.extra.resourceIsIndex = isDirectoryIndex(urlObj.resource, options);
        }
        // Else: query/hash-only or empty
}



function splitPath(path)
{
        // TWEAK :: condition only for speed optimization
        if (path !== "/")
        {
                var cleaned = [];
                
                path.split("/").forEach( function(dir)
                {
                        // Cleanup -- splitting "/dir/" becomes ["","dir",""]
                        if (dir !== "")
                        {
                                cleaned.push(dir);
                        }
                });
                
                return cleaned;
        }
        else
        {
                // Faster to skip the above block and just create an array
                return [];
        }
}



module.exports = parsePath;

},{}],134:[function(require,module,exports){
"use strict";

function parsePort(urlObj, options)
{
        var defaultPort = -1;
        
        for (var i in options.defaultPorts)
        {
                if ( i===urlObj.scheme && options.defaultPorts.hasOwnProperty(i) )
                {
                        defaultPort = options.defaultPorts[i];
                        break;
                }
        }
        
        if (defaultPort > -1)
        {
                // Force same type as urlObj.port
                defaultPort = defaultPort.toString();
                
                if (urlObj.port === null)
                {
                        urlObj.port = defaultPort;
                }
                
                urlObj.extra.portIsDefault = (urlObj.port === defaultPort);
        }
}



module.exports = parsePort;

},{}],135:[function(require,module,exports){
"use strict";
var hasOwnProperty = Object.prototype.hasOwnProperty;



function parseQuery(urlObj, options)
{
        urlObj.query.string.full = stringify(urlObj.query.object, false);
        
        // TWEAK :: condition only for speed optimization
        if (options.removeEmptyQueries)
        {
                urlObj.query.string.stripped = stringify(urlObj.query.object, true);
        }
}



function stringify(queryObj, removeEmptyQueries)
{
        var count = 0;
        var str = "";
        
        for (var i in queryObj)
        {
                if ( i!=="" && hasOwnProperty.call(queryObj, i)===true )
                {
                        var value = queryObj[i];
                        
                        if (value !== "" || !removeEmptyQueries)
                        {
                                str += (++count===1) ? "?" : "&";
                                
                                i = encodeURIComponent(i);
                                
                                if (value !== "")
                                {
                                        str += i +"="+ encodeURIComponent(value).replace(/%20/g,"+");
                                }
                                else
                                {
                                        str += i;
                                }
                        }
                }
        }
        
        return str;
}



module.exports = parseQuery;

},{}],136:[function(require,module,exports){
"use strict";

var _parseUrl = require("url").parse;



/*
        Customize the URL object that Node generates
        because:
        
        * necessary data for later
        * urlObj.host is useless
        * urlObj.hostname is too long
        * urlObj.path is useless
        * urlObj.pathname is too long
        * urlObj.protocol is inaccurate; should be called "scheme"
        * urlObj.search is mostly useless
*/
function clean(urlObj)
{
        var scheme = urlObj.protocol;
        
        if (scheme)
        {
                // Remove ":" suffix
                if (scheme.indexOf(":") === scheme.length-1)
                {
                        scheme = scheme.substr(0, scheme.length-1);
                }
        }
        
        urlObj.host =
        {
                // TODO :: unescape(encodeURIComponent(s)) ? ... http://ecmanaut.blogspot.ca/2006/07/encoding-decoding-utf8-in-javascript.html
                full: urlObj.hostname,
                stripped: null
        };
        
        urlObj.path =
        {
                absolute:
                {
                        array: null,
                        string: urlObj.pathname
                },
                relative:
                {
                        array: null,
                        string: null
                }
        };
        
        urlObj.query =
        {
                object: urlObj.query,
                string:
                {
                        full: null,
                        stripped: null
                }
        };
        
        urlObj.extra =
        {
                hrefInfo:
                {
                        minimumPathOnly: null,
                        minimumResourceOnly: null,
                        minimumQueryOnly: null,
                        minimumHashOnly: null,
                        empty: null,
                        
                        separatorOnlyQuery: urlObj.search==="?"
                },
                portIsDefault: null,
                relation:
                {
                        maximumScheme: null,
                        maximumAuth: null,
                        maximumHost: null,
                        maximumPort: null,
                        maximumPath: null,
                        maximumResource: null,
                        maximumQuery: null,
                        maximumHash: null,
                        
                        minimumScheme: null,
                        minimumAuth: null,
                        minimumHost: null,
                        minimumPort: null,
                        minimumPath: null,
                        minimumResource: null,
                        minimumQuery: null,
                        minimumHash: null,
                        
                        overridesQuery: null
                },
                resourceIsIndex: null,
                slashes: urlObj.slashes
        };
        
        urlObj.resource = null;
        urlObj.scheme = scheme;
        delete urlObj.hostname;
        delete urlObj.pathname;
        delete urlObj.protocol;
        delete urlObj.search;
        delete urlObj.slashes;
        
        return urlObj;
}



function validScheme(url, options)
{
        var valid = true;
        
        options.rejectedSchemes.every( function(rejectedScheme)
        {
                valid = !(url.indexOf(rejectedScheme+":") === 0);
                
                // Break loop
                return valid;
        });
        
        return valid;
}



function parseUrlString(url, options)
{
        if ( validScheme(url,options) )
        {
                return clean( _parseUrl(url, true, options.slashesDenoteHost) );
        }
        else
        {
                return {href:url, valid:false};
        }
}



module.exports = parseUrlString;

},{"url":162}],137:[function(require,module,exports){
"use strict";

var findRelation = require("./findRelation");
var objUtils     = require("../util/object");
var pathUtils    = require("../util/path");



function absolutize(urlObj, siteUrlObj, options)
{
        findRelation.upToPath(urlObj, siteUrlObj, options);
        
        // Fill in relative URLs
        if (urlObj.extra.relation.minimumScheme) urlObj.scheme = siteUrlObj.scheme;
        if (urlObj.extra.relation.minimumAuth)   urlObj.auth   = siteUrlObj.auth;
        if (urlObj.extra.relation.minimumHost)   urlObj.host   = objUtils.clone(siteUrlObj.host);
        if (urlObj.extra.relation.minimumPort)   copyPort(urlObj, siteUrlObj);
        if (urlObj.extra.relation.minimumScheme) copyPath(urlObj, siteUrlObj);
        
        // Check remaining relativeness now that path has been copied and/or resolved
        findRelation.pathOn(urlObj, siteUrlObj, options);
        
        // Fill in relative URLs
        if (urlObj.extra.relation.minimumResource) copyResource(urlObj, siteUrlObj);
        if (urlObj.extra.relation.minimumQuery)    urlObj.query = objUtils.clone(siteUrlObj.query);
        if (urlObj.extra.relation.minimumHash)     urlObj.hash  = siteUrlObj.hash;
}



/*
        Get an absolute path that's relative to site url.
*/
function copyPath(urlObj, siteUrlObj)
{
        if (urlObj.extra.relation.maximumHost || !urlObj.extra.hrefInfo.minimumResourceOnly)
        {
                var pathArray = urlObj.path.absolute.array;
                var pathString = "/";
                
                // If not erroneous URL
                if (pathArray)
                {
                        // If is relative path
                        if (urlObj.extra.hrefInfo.minimumPathOnly && urlObj.path.absolute.string.indexOf("/")!==0)
                        {
                                // Append path to site path
                                pathArray = siteUrlObj.path.absolute.array.concat(pathArray);
                        }
                        
                        pathArray   = pathUtils.resolveDotSegments(pathArray);
                        pathString += pathUtils.join(pathArray);
                }
                else
                {
                        pathArray = [];
                }
                
                urlObj.path.absolute.array  = pathArray;
                urlObj.path.absolute.string = pathString;
        }
        else
        {
                // Resource-, query- or hash-only or empty
                urlObj.path = objUtils.clone(siteUrlObj.path);
        }
}



function copyPort(urlObj, siteUrlObj)
{
        urlObj.port = siteUrlObj.port;
        
        urlObj.extra.portIsDefault = siteUrlObj.extra.portIsDefault;
}



function copyResource(urlObj, siteUrlObj)
{
        urlObj.resource = siteUrlObj.resource;
        
        urlObj.extra.resourceIsIndex = siteUrlObj.extra.resourceIsIndex;
}



module.exports = absolutize;

},{"../util/object":141,"../util/path":142,"./findRelation":138}],138:[function(require,module,exports){
"use strict";

function findRelation_upToPath(urlObj, siteUrlObj, options)
{
        // Path- or root-relative URL
        var pathOnly = urlObj.extra.hrefInfo.minimumPathOnly;
        
        // Matching scheme, scheme-relative or path-only
        var minimumScheme = (urlObj.scheme===siteUrlObj.scheme || !urlObj.scheme);
        
        // Matching auth, ignoring auth or path-only
        var minimumAuth = minimumScheme && (urlObj.auth===siteUrlObj.auth || options.removeAuth || pathOnly);
        
        // Matching host or path-only
        var www = options.ignore_www ? "stripped" : "full";
        var minimumHost = minimumAuth && (urlObj.host[www]===siteUrlObj.host[www] || pathOnly);
        
        // Matching port or path-only
        var minimumPort = minimumHost && (urlObj.port===siteUrlObj.port || pathOnly);
        
        urlObj.extra.relation.minimumScheme = minimumScheme;
        urlObj.extra.relation.minimumAuth   = minimumAuth;
        urlObj.extra.relation.minimumHost   = minimumHost;
        urlObj.extra.relation.minimumPort   = minimumPort;
        
        urlObj.extra.relation.maximumScheme = !minimumScheme || minimumScheme && !minimumAuth;
        urlObj.extra.relation.maximumAuth   = !minimumScheme || minimumScheme && !minimumHost;
        urlObj.extra.relation.maximumHost   = !minimumScheme || minimumScheme && !minimumPort;
}



function findRelation_pathOn(urlObj, siteUrlObj, options)
{
        var queryOnly = urlObj.extra.hrefInfo.minimumQueryOnly;
        var hashOnly  = urlObj.extra.hrefInfo.minimumHashOnly;
        var empty     = urlObj.extra.hrefInfo.empty;    // not required, but self-documenting
        
        // From upToPath()
        var minimumPort   = urlObj.extra.relation.minimumPort;
        var minimumScheme = urlObj.extra.relation.minimumScheme;
        
        // Matching port and path
        var minimumPath = minimumPort && urlObj.path.absolute.string===siteUrlObj.path.absolute.string;
        
        // Matching resource or query/hash-only or empty
        var matchingResource = (urlObj.resource===siteUrlObj.resource || !urlObj.resource && siteUrlObj.extra.resourceIsIndex) || (options.removeDirectoryIndexes && urlObj.extra.resourceIsIndex && !siteUrlObj.resource);
        var minimumResource = minimumPath && (matchingResource || queryOnly || hashOnly || empty);
        
        // Matching query or hash-only/empty
        var query = options.removeEmptyQueries ? "stripped" : "full";
        var urlQuery = urlObj.query.string[query];
        var siteUrlQuery = siteUrlObj.query.string[query];
        var minimumQuery = (minimumResource && !!urlQuery && urlQuery===siteUrlQuery) || ((hashOnly || empty) && !urlObj.extra.hrefInfo.separatorOnlyQuery);
        
        var minimumHash = minimumQuery && urlObj.hash===siteUrlObj.hash;
        
        urlObj.extra.relation.minimumPath     = minimumPath;
        urlObj.extra.relation.minimumResource = minimumResource;
        urlObj.extra.relation.minimumQuery    = minimumQuery;
        urlObj.extra.relation.minimumHash     = minimumHash;
        
        urlObj.extra.relation.maximumPort     = !minimumScheme || minimumScheme && !minimumPath;
        urlObj.extra.relation.maximumPath     = !minimumScheme || minimumScheme && !minimumResource;
        urlObj.extra.relation.maximumResource = !minimumScheme || minimumScheme && !minimumQuery;
        urlObj.extra.relation.maximumQuery    = !minimumScheme || minimumScheme && !minimumHash;
        urlObj.extra.relation.maximumHash     = !minimumScheme || minimumScheme && !minimumHash;        // there's nothing after hash, so it's the same as maximumQuery
        
        // Matching path and/or resource with existing but non-matching site query
        urlObj.extra.relation.overridesQuery  = minimumPath && urlObj.extra.relation.maximumResource && !minimumQuery && !!siteUrlQuery;
}



module.exports =
{
        pathOn:   findRelation_pathOn,
        upToPath: findRelation_upToPath
};

},{}],139:[function(require,module,exports){
"use strict";

var absolutize = require("./absolutize");
var relativize = require("./relativize");



function relateUrl(siteUrlObj, urlObj, options)
{
        absolutize(urlObj, siteUrlObj, options);
        relativize(urlObj, siteUrlObj, options);
        
        return urlObj;
}



module.exports = relateUrl;

},{"./absolutize":137,"./relativize":140}],140:[function(require,module,exports){
"use strict";

var pathUtils = require("../util/path");



/*
        Get a path relative to the site path.
*/
function relatePath(absolutePath, siteAbsolutePath)
{
        var relativePath = [];
        
        // At this point, it's related to the host/port
        var related = true;
        var parentIndex = -1;
        
        // Find parents
        siteAbsolutePath.forEach( function(siteAbsoluteDir, i)
        {
                if (related)
                {
                        if (absolutePath[i] !== siteAbsoluteDir)
                        {
                                related = false;
                        }
                        else
                        {
                                parentIndex = i;
                        }
                }
                
                if (!related)
                {
                        // Up one level
                        relativePath.push("..");
                }
        });
        
        // Form path
        absolutePath.forEach( function(dir, i)
        {
                if (i > parentIndex)
                {
                        relativePath.push(dir);
                }
        });
        
        return relativePath;
}



function relativize(urlObj, siteUrlObj, options)
{
        if (urlObj.extra.relation.minimumScheme)
        {
                var pathArray = relatePath(urlObj.path.absolute.array, siteUrlObj.path.absolute.array);
                
                urlObj.path.relative.array  = pathArray;
                urlObj.path.relative.string = pathUtils.join(pathArray);
        }
}



module.exports = relativize;

},{"../util/path":142}],141:[function(require,module,exports){
"use strict";

/*
        Deep-clone an object.
*/
function clone(obj)
{
        if (obj instanceof Object)
        {
                var clonedObj = (obj instanceof Array) ? [] : {};
                
                for (var i in obj)
                {
                        if ( obj.hasOwnProperty(i) )
                        {
                                clonedObj[i] = clone( obj[i] );
                        }
                }
                
                return clonedObj;
        }
        
        return obj;
}



/*
        https://github.com/jonschlinkert/is-plain-object
*/
function isPlainObject(obj)
{
        return !!obj && typeof obj==="object" && obj.constructor===Object;
}



/*
        Shallow-merge two objects.
*/
function shallowMerge(target, source)
{
        if (target instanceof Object && source instanceof Object)
        {
                for (var i in source)
                {
                        if ( source.hasOwnProperty(i) )
                        {
                                target[i] = source[i];
                        }
                }
        }
        
        return target;
}



module.exports =
{
        clone: clone,
        isPlainObject: isPlainObject,
        shallowMerge: shallowMerge
};

},{}],142:[function(require,module,exports){
"use strict";

function joinPath(pathArray)
{
        if (pathArray.length > 0)
        {
                return pathArray.join("/") + "/";
        }
        else
        {
                return "";
        }
}



function resolveDotSegments(pathArray)
{
        var pathAbsolute = [];
        
        pathArray.forEach( function(dir)
        {
                if (dir !== "..")
                {
                        if (dir !== ".")
                        {
                                pathAbsolute.push(dir);
                        }
                }
                else
                {
                        // Remove parent
                        if (pathAbsolute.length > 0)
                        {
                                pathAbsolute.splice(pathAbsolute.length-1, 1);
                        }
                }
        });
        
        return pathAbsolute;
}



module.exports =
{
        join: joinPath,
        resolveDotSegments: resolveDotSegments
};

},{}],143:[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":4}],144:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var util = require('./util');
var has = Object.prototype.hasOwnProperty;
var hasNativeMap = typeof Map !== "undefined";

/**
 * A data structure which is a combination of an array and a set. Adding a new
 * member is O(1), testing for membership is O(1), and finding the index of an
 * element is O(1). Removing elements from the set is not supported. Only
 * strings are supported for membership.
 */
function ArraySet() {
  this._array = [];
  this._set = hasNativeMap ? new Map() : Object.create(null);
}

/**
 * Static method for creating ArraySet instances from an existing array.
 */
ArraySet.fromArray = function ArraySet_fromArray(aArray, aAllowDuplicates) {
  var set = new ArraySet();
  for (var i = 0, len = aArray.length; i < len; i++) {
    set.add(aArray[i], aAllowDuplicates);
  }
  return set;
};

/**
 * Return how many unique items are in this ArraySet. If duplicates have been
 * added, than those do not count towards the size.
 *
 * @returns Number
 */
ArraySet.prototype.size = function ArraySet_size() {
  return hasNativeMap ? this._set.size : Object.getOwnPropertyNames(this._set).length;
};

/**
 * Add the given string to this set.
 *
 * @param String aStr
 */
ArraySet.prototype.add = function ArraySet_add(aStr, aAllowDuplicates) {
  var sStr = hasNativeMap ? aStr : util.toSetString(aStr);
  var isDuplicate = hasNativeMap ? this.has(aStr) : has.call(this._set, sStr);
  var idx = this._array.length;
  if (!isDuplicate || aAllowDuplicates) {
    this._array.push(aStr);
  }
  if (!isDuplicate) {
    if (hasNativeMap) {
      this._set.set(aStr, idx);
    } else {
      this._set[sStr] = idx;
    }
  }
};

/**
 * Is the given string a member of this set?
 *
 * @param String aStr
 */
ArraySet.prototype.has = function ArraySet_has(aStr) {
  if (hasNativeMap) {
    return this._set.has(aStr);
  } else {
    var sStr = util.toSetString(aStr);
    return has.call(this._set, sStr);
  }
};

/**
 * What is the index of the given string in the array?
 *
 * @param String aStr
 */
ArraySet.prototype.indexOf = function ArraySet_indexOf(aStr) {
  if (hasNativeMap) {
    var idx = this._set.get(aStr);
    if (idx >= 0) {
        return idx;
    }
  } else {
    var sStr = util.toSetString(aStr);
    if (has.call(this._set, sStr)) {
      return this._set[sStr];
    }
  }

  throw new Error('"' + aStr + '" is not in the set.');
};

/**
 * What is the element at the given index?
 *
 * @param Number aIdx
 */
ArraySet.prototype.at = function ArraySet_at(aIdx) {
  if (aIdx >= 0 && aIdx < this._array.length) {
    return this._array[aIdx];
  }
  throw new Error('No element indexed by ' + aIdx);
};

/**
 * Returns the array representation of this set (which has the proper indices
 * indicated by indexOf). Note that this is a copy of the internal array used
 * for storing the members so that no one can mess with internal state.
 */
ArraySet.prototype.toArray = function ArraySet_toArray() {
  return this._array.slice();
};

exports.ArraySet = ArraySet;

},{"./util":153}],145:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 *
 * Based on the Base 64 VLQ implementation in Closure Compiler:
 * https://code.google.com/p/closure-compiler/source/browse/trunk/src/com/google/debugging/sourcemap/Base64VLQ.java
 *
 * Copyright 2011 The Closure Compiler Authors. All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer in the documentation and/or other materials provided
 *    with the distribution.
 *  * Neither the name of Google Inc. nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

var base64 = require('./base64');

// A single base 64 digit can contain 6 bits of data. For the base 64 variable
// length quantities we use in the source map spec, the first bit is the sign,
// the next four bits are the actual value, and the 6th bit is the
// continuation bit. The continuation bit tells us whether there are more
// digits in this value following this digit.
//
//   Continuation
//   |    Sign
//   |    |
//   V    V
//   101011

var VLQ_BASE_SHIFT = 5;

// binary: 100000
var VLQ_BASE = 1 << VLQ_BASE_SHIFT;

// binary: 011111
var VLQ_BASE_MASK = VLQ_BASE - 1;

// binary: 100000
var VLQ_CONTINUATION_BIT = VLQ_BASE;

/**
 * Converts from a two-complement value to a value where the sign bit is
 * placed in the least significant bit.  For example, as decimals:
 *   1 becomes 2 (10 binary), -1 becomes 3 (11 binary)
 *   2 becomes 4 (100 binary), -2 becomes 5 (101 binary)
 */
function toVLQSigned(aValue) {
  return aValue < 0
    ? ((-aValue) << 1) + 1
    : (aValue << 1) + 0;
}

/**
 * Converts to a two-complement value from a value where the sign bit is
 * placed in the least significant bit.  For example, as decimals:
 *   2 (10 binary) becomes 1, 3 (11 binary) becomes -1
 *   4 (100 binary) becomes 2, 5 (101 binary) becomes -2
 */
function fromVLQSigned(aValue) {
  var isNegative = (aValue & 1) === 1;
  var shifted = aValue >> 1;
  return isNegative
    ? -shifted
    : shifted;
}

/**
 * Returns the base 64 VLQ encoded value.
 */
exports.encode = function base64VLQ_encode(aValue) {
  var encoded = "";
  var digit;

  var vlq = toVLQSigned(aValue);

  do {
    digit = vlq & VLQ_BASE_MASK;
    vlq >>>= VLQ_BASE_SHIFT;
    if (vlq > 0) {
      // There are still more digits in this value, so we must make sure the
      // continuation bit is marked.
      digit |= VLQ_CONTINUATION_BIT;
    }
    encoded += base64.encode(digit);
  } while (vlq > 0);

  return encoded;
};

/**
 * Decodes the next base 64 VLQ value from the given string and returns the
 * value and the rest of the string via the out parameter.
 */
exports.decode = function base64VLQ_decode(aStr, aIndex, aOutParam) {
  var strLen = aStr.length;
  var result = 0;
  var shift = 0;
  var continuation, digit;

  do {
    if (aIndex >= strLen) {
      throw new Error("Expected more digits in base 64 VLQ value.");
    }

    digit = base64.decode(aStr.charCodeAt(aIndex++));
    if (digit === -1) {
      throw new Error("Invalid base64 digit: " + aStr.charAt(aIndex - 1));
    }

    continuation = !!(digit & VLQ_CONTINUATION_BIT);
    digit &= VLQ_BASE_MASK;
    result = result + (digit << shift);
    shift += VLQ_BASE_SHIFT;
  } while (continuation);

  aOutParam.value = fromVLQSigned(result);
  aOutParam.rest = aIndex;
};

},{"./base64":146}],146:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var intToCharMap = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.split('');

/**
 * Encode an integer in the range of 0 to 63 to a single base 64 digit.
 */
exports.encode = function (number) {
  if (0 <= number && number < intToCharMap.length) {
    return intToCharMap[number];
  }
  throw new TypeError("Must be between 0 and 63: " + number);
};

/**
 * Decode a single base 64 character code digit to an integer. Returns -1 on
 * failure.
 */
exports.decode = function (charCode) {
  var bigA = 65;     // 'A'
  var bigZ = 90;     // 'Z'

  var littleA = 97;  // 'a'
  var littleZ = 122; // 'z'

  var zero = 48;     // '0'
  var nine = 57;     // '9'

  var plus = 43;     // '+'
  var slash = 47;    // '/'

  var littleOffset = 26;
  var numberOffset = 52;

  // 0 - 25: ABCDEFGHIJKLMNOPQRSTUVWXYZ
  if (bigA <= charCode && charCode <= bigZ) {
    return (charCode - bigA);
  }

  // 26 - 51: abcdefghijklmnopqrstuvwxyz
  if (littleA <= charCode && charCode <= littleZ) {
    return (charCode - littleA + littleOffset);
  }

  // 52 - 61: 0123456789
  if (zero <= charCode && charCode <= nine) {
    return (charCode - zero + numberOffset);
  }

  // 62: +
  if (charCode == plus) {
    return 62;
  }

  // 63: /
  if (charCode == slash) {
    return 63;
  }

  // Invalid base64 digit.
  return -1;
};

},{}],147:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

exports.GREATEST_LOWER_BOUND = 1;
exports.LEAST_UPPER_BOUND = 2;

/**
 * Recursive implementation of binary search.
 *
 * @param aLow Indices here and lower do not contain the needle.
 * @param aHigh Indices here and higher do not contain the needle.
 * @param aNeedle The element being searched for.
 * @param aHaystack The non-empty array being searched.
 * @param aCompare Function which takes two elements and returns -1, 0, or 1.
 * @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
 *     'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
 *     closest element that is smaller than or greater than the one we are
 *     searching for, respectively, if the exact element cannot be found.
 */
function recursiveSearch(aLow, aHigh, aNeedle, aHaystack, aCompare, aBias) {
  // This function terminates when one of the following is true:
  //
  //   1. We find the exact element we are looking for.
  //
  //   2. We did not find the exact element, but we can return the index of
  //      the next-closest element.
  //
  //   3. We did not find the exact element, and there is no next-closest
  //      element than the one we are searching for, so we return -1.
  var mid = Math.floor((aHigh - aLow) / 2) + aLow;
  var cmp = aCompare(aNeedle, aHaystack[mid], true);
  if (cmp === 0) {
    // Found the element we are looking for.
    return mid;
  }
  else if (cmp > 0) {
    // Our needle is greater than aHaystack[mid].
    if (aHigh - mid > 1) {
      // The element is in the upper half.
      return recursiveSearch(mid, aHigh, aNeedle, aHaystack, aCompare, aBias);
    }

    // The exact needle element was not found in this haystack. Determine if
    // we are in termination case (3) or (2) and return the appropriate thing.
    if (aBias == exports.LEAST_UPPER_BOUND) {
      return aHigh < aHaystack.length ? aHigh : -1;
    } else {
      return mid;
    }
  }
  else {
    // Our needle is less than aHaystack[mid].
    if (mid - aLow > 1) {
      // The element is in the lower half.
      return recursiveSearch(aLow, mid, aNeedle, aHaystack, aCompare, aBias);
    }

    // we are in termination case (3) or (2) and return the appropriate thing.
    if (aBias == exports.LEAST_UPPER_BOUND) {
      return mid;
    } else {
      return aLow < 0 ? -1 : aLow;
    }
  }
}

/**
 * This is an implementation of binary search which will always try and return
 * the index of the closest element if there is no exact hit. This is because
 * mappings between original and generated line/col pairs are single points,
 * and there is an implicit region between each of them, so a miss just means
 * that you aren't on the very start of a region.
 *
 * @param aNeedle The element you are looking for.
 * @param aHaystack The array that is being searched.
 * @param aCompare A function which takes the needle and an element in the
 *     array and returns -1, 0, or 1 depending on whether the needle is less
 *     than, equal to, or greater than the element, respectively.
 * @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
 *     'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
 *     closest element that is smaller than or greater than the one we are
 *     searching for, respectively, if the exact element cannot be found.
 *     Defaults to 'binarySearch.GREATEST_LOWER_BOUND'.
 */
exports.search = function search(aNeedle, aHaystack, aCompare, aBias) {
  if (aHaystack.length === 0) {
    return -1;
  }

  var index = recursiveSearch(-1, aHaystack.length, aNeedle, aHaystack,
                              aCompare, aBias || exports.GREATEST_LOWER_BOUND);
  if (index < 0) {
    return -1;
  }

  // We have found either the exact element, or the next-closest element than
  // the one we are searching for. However, there may be more than one such
  // element. Make sure we always return the smallest of these.
  while (index - 1 >= 0) {
    if (aCompare(aHaystack[index], aHaystack[index - 1], true) !== 0) {
      break;
    }
    --index;
  }

  return index;
};

},{}],148:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2014 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var util = require('./util');

/**
 * Determine whether mappingB is after mappingA with respect to generated
 * position.
 */
function generatedPositionAfter(mappingA, mappingB) {
  // Optimized for most common case
  var lineA = mappingA.generatedLine;
  var lineB = mappingB.generatedLine;
  var columnA = mappingA.generatedColumn;
  var columnB = mappingB.generatedColumn;
  return lineB > lineA || lineB == lineA && columnB >= columnA ||
         util.compareByGeneratedPositionsInflated(mappingA, mappingB) <= 0;
}

/**
 * A data structure to provide a sorted view of accumulated mappings in a
 * performance conscious manner. It trades a neglibable overhead in general
 * case for a large speedup in case of mappings being added in order.
 */
function MappingList() {
  this._array = [];
  this._sorted = true;
  // Serves as infimum
  this._last = {generatedLine: -1, generatedColumn: 0};
}

/**
 * Iterate through internal items. This method takes the same arguments that
 * `Array.prototype.forEach` takes.
 *
 * NOTE: The order of the mappings is NOT guaranteed.
 */
MappingList.prototype.unsortedForEach =
  function MappingList_forEach(aCallback, aThisArg) {
    this._array.forEach(aCallback, aThisArg);
  };

/**
 * Add the given source mapping.
 *
 * @param Object aMapping
 */
MappingList.prototype.add = function MappingList_add(aMapping) {
  if (generatedPositionAfter(this._last, aMapping)) {
    this._last = aMapping;
    this._array.push(aMapping);
  } else {
    this._sorted = false;
    this._array.push(aMapping);
  }
};

/**
 * Returns the flat, sorted array of mappings. The mappings are sorted by
 * generated position.
 *
 * WARNING: This method returns internal data without copying, for
 * performance. The return value must NOT be mutated, and should be treated as
 * an immutable borrow. If you want to take ownership, you must make your own
 * copy.
 */
MappingList.prototype.toArray = function MappingList_toArray() {
  if (!this._sorted) {
    this._array.sort(util.compareByGeneratedPositionsInflated);
    this._sorted = true;
  }
  return this._array;
};

exports.MappingList = MappingList;

},{"./util":153}],149:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

// It turns out that some (most?) JavaScript engines don't self-host
// `Array.prototype.sort`. This makes sense because C++ will likely remain
// faster than JS when doing raw CPU-intensive sorting. However, when using a
// custom comparator function, calling back and forth between the VM's C++ and
// JIT'd JS is rather slow *and* loses JIT type information, resulting in
// worse generated code for the comparator function than would be optimal. In
// fact, when sorting with a comparator, these costs outweigh the benefits of
// sorting in C++. By using our own JS-implemented Quick Sort (below), we get
// a ~3500ms mean speed-up in `bench/bench.html`.

/**
 * Swap the elements indexed by `x` and `y` in the array `ary`.
 *
 * @param {Array} ary
 *        The array.
 * @param {Number} x
 *        The index of the first item.
 * @param {Number} y
 *        The index of the second item.
 */
function swap(ary, x, y) {
  var temp = ary[x];
  ary[x] = ary[y];
  ary[y] = temp;
}

/**
 * Returns a random integer within the range `low .. high` inclusive.
 *
 * @param {Number} low
 *        The lower bound on the range.
 * @param {Number} high
 *        The upper bound on the range.
 */
function randomIntInRange(low, high) {
  return Math.round(low + (Math.random() * (high - low)));
}

/**
 * The Quick Sort algorithm.
 *
 * @param {Array} ary
 *        An array to sort.
 * @param {function} comparator
 *        Function to use to compare two items.
 * @param {Number} p
 *        Start index of the array
 * @param {Number} r
 *        End index of the array
 */
function doQuickSort(ary, comparator, p, r) {
  // If our lower bound is less than our upper bound, we (1) partition the
  // array into two pieces and (2) recurse on each half. If it is not, this is
  // the empty array and our base case.

  if (p < r) {
    // (1) Partitioning.
    //
    // The partitioning chooses a pivot between `p` and `r` and moves all
    // elements that are less than or equal to the pivot to the before it, and
    // all the elements that are greater than it after it. The effect is that
    // once partition is done, the pivot is in the exact place it will be when
    // the array is put in sorted order, and it will not need to be moved
    // again. This runs in O(n) time.

    // Always choose a random pivot so that an input array which is reverse
    // sorted does not cause O(n^2) running time.
    var pivotIndex = randomIntInRange(p, r);
    var i = p - 1;

    swap(ary, pivotIndex, r);
    var pivot = ary[r];

    // Immediately after `j` is incremented in this loop, the following hold
    // true:
    //
    //   * Every element in `ary[p .. i]` is less than or equal to the pivot.
    //
    //   * Every element in `ary[i+1 .. j-1]` is greater than the pivot.
    for (var j = p; j < r; j++) {
      if (comparator(ary[j], pivot) <= 0) {
        i += 1;
        swap(ary, i, j);
      }
    }

    swap(ary, i + 1, j);
    var q = i + 1;

    // (2) Recurse on each half.

    doQuickSort(ary, comparator, p, q - 1);
    doQuickSort(ary, comparator, q + 1, r);
  }
}

/**
 * Sort the given array in-place with the given comparator function.
 *
 * @param {Array} ary
 *        An array to sort.
 * @param {function} comparator
 *        Function to use to compare two items.
 */
exports.quickSort = function (ary, comparator) {
  doQuickSort(ary, comparator, 0, ary.length - 1);
};

},{}],150:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var util = require('./util');
var binarySearch = require('./binary-search');
var ArraySet = require('./array-set').ArraySet;
var base64VLQ = require('./base64-vlq');
var quickSort = require('./quick-sort').quickSort;

function SourceMapConsumer(aSourceMap, aSourceMapURL) {
  var sourceMap = aSourceMap;
  if (typeof aSourceMap === 'string') {
    sourceMap = util.parseSourceMapInput(aSourceMap);
  }

  return sourceMap.sections != null
    ? new IndexedSourceMapConsumer(sourceMap, aSourceMapURL)
    : new BasicSourceMapConsumer(sourceMap, aSourceMapURL);
}

SourceMapConsumer.fromSourceMap = function(aSourceMap, aSourceMapURL) {
  return BasicSourceMapConsumer.fromSourceMap(aSourceMap, aSourceMapURL);
}

/**
 * The version of the source mapping spec that we are consuming.
 */
SourceMapConsumer.prototype._version = 3;

// `__generatedMappings` and `__originalMappings` are arrays that hold the
// parsed mapping coordinates from the source map's "mappings" attribute. They
// are lazily instantiated, accessed via the `_generatedMappings` and
// `_originalMappings` getters respectively, and we only parse the mappings
// and create these arrays once queried for a source location. We jump through
// these hoops because there can be many thousands of mappings, and parsing
// them is expensive, so we only want to do it if we must.
//
// Each object in the arrays is of the form:
//
//     {
//       generatedLine: The line number in the generated code,
//       generatedColumn: The column number in the generated code,
//       source: The path to the original source file that generated this
//               chunk of code,
//       originalLine: The line number in the original source that
//                     corresponds to this chunk of generated code,
//       originalColumn: The column number in the original source that
//                       corresponds to this chunk of generated code,
//       name: The name of the original symbol which generated this chunk of
//             code.
//     }
//
// All properties except for `generatedLine` and `generatedColumn` can be
// `null`.
//
// `_generatedMappings` is ordered by the generated positions.
//
// `_originalMappings` is ordered by the original positions.

SourceMapConsumer.prototype.__generatedMappings = null;
Object.defineProperty(SourceMapConsumer.prototype, '_generatedMappings', {
  configurable: true,
  enumerable: true,
  get: function () {
    if (!this.__generatedMappings) {
      this._parseMappings(this._mappings, this.sourceRoot);
    }

    return this.__generatedMappings;
  }
});

SourceMapConsumer.prototype.__originalMappings = null;
Object.defineProperty(SourceMapConsumer.prototype, '_originalMappings', {
  configurable: true,
  enumerable: true,
  get: function () {
    if (!this.__originalMappings) {
      this._parseMappings(this._mappings, this.sourceRoot);
    }

    return this.__originalMappings;
  }
});

SourceMapConsumer.prototype._charIsMappingSeparator =
  function SourceMapConsumer_charIsMappingSeparator(aStr, index) {
    var c = aStr.charAt(index);
    return c === ";" || c === ",";
  };

/**
 * Parse the mappings in a string in to a data structure which we can easily
 * query (the ordered arrays in the `this.__generatedMappings` and
 * `this.__originalMappings` properties).
 */
SourceMapConsumer.prototype._parseMappings =
  function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
    throw new Error("Subclasses must implement _parseMappings");
  };

SourceMapConsumer.GENERATED_ORDER = 1;
SourceMapConsumer.ORIGINAL_ORDER = 2;

SourceMapConsumer.GREATEST_LOWER_BOUND = 1;
SourceMapConsumer.LEAST_UPPER_BOUND = 2;

/**
 * Iterate over each mapping between an original source/line/column and a
 * generated line/column in this source map.
 *
 * @param Function aCallback
 *        The function that is called with each mapping.
 * @param Object aContext
 *        Optional. If specified, this object will be the value of `this` every
 *        time that `aCallback` is called.
 * @param aOrder
 *        Either `SourceMapConsumer.GENERATED_ORDER` or
 *        `SourceMapConsumer.ORIGINAL_ORDER`. Specifies whether you want to
 *        iterate over the mappings sorted by the generated file's line/column
 *        order or the original's source/line/column order, respectively. Defaults to
 *        `SourceMapConsumer.GENERATED_ORDER`.
 */
SourceMapConsumer.prototype.eachMapping =
  function SourceMapConsumer_eachMapping(aCallback, aContext, aOrder) {
    var context = aContext || null;
    var order = aOrder || SourceMapConsumer.GENERATED_ORDER;

    var mappings;
    switch (order) {
    case SourceMapConsumer.GENERATED_ORDER:
      mappings = this._generatedMappings;
      break;
    case SourceMapConsumer.ORIGINAL_ORDER:
      mappings = this._originalMappings;
      break;
    default:
      throw new Error("Unknown order of iteration.");
    }

    var sourceRoot = this.sourceRoot;
    mappings.map(function (mapping) {
      var source = mapping.source === null ? null : this._sources.at(mapping.source);
      source = util.computeSourceURL(sourceRoot, source, this._sourceMapURL);
      return {
        source: source,
        generatedLine: mapping.generatedLine,
        generatedColumn: mapping.generatedColumn,
        originalLine: mapping.originalLine,
        originalColumn: mapping.originalColumn,
        name: mapping.name === null ? null : this._names.at(mapping.name)
      };
    }, this).forEach(aCallback, context);
  };

/**
 * Returns all generated line and column information for the original source,
 * line, and column provided. If no column is provided, returns all mappings
 * corresponding to a either the line we are searching for or the next
 * closest line that has any mappings. Otherwise, returns all mappings
 * corresponding to the given line and either the column we are searching for
 * or the next closest column that has any offsets.
 *
 * The only argument is an object with the following properties:
 *
 *   - source: The filename of the original source.
 *   - line: The line number in the original source.  The line number is 1-based.
 *   - column: Optional. the column number in the original source.
 *    The column number is 0-based.
 *
 * and an array of objects is returned, each with the following properties:
 *
 *   - line: The line number in the generated source, or null.  The
 *    line number is 1-based.
 *   - column: The column number in the generated source, or null.
 *    The column number is 0-based.
 */
SourceMapConsumer.prototype.allGeneratedPositionsFor =
  function SourceMapConsumer_allGeneratedPositionsFor(aArgs) {
    var line = util.getArg(aArgs, 'line');

    // When there is no exact match, BasicSourceMapConsumer.prototype._findMapping
    // returns the index of the closest mapping less than the needle. By
    // setting needle.originalColumn to 0, we thus find the last mapping for
    // the given line, provided such a mapping exists.
    var needle = {
      source: util.getArg(aArgs, 'source'),
      originalLine: line,
      originalColumn: util.getArg(aArgs, 'column', 0)
    };

    needle.source = this._findSourceIndex(needle.source);
    if (needle.source < 0) {
      return [];
    }

    var mappings = [];

    var index = this._findMapping(needle,
                                  this._originalMappings,
                                  "originalLine",
                                  "originalColumn",
                                  util.compareByOriginalPositions,
                                  binarySearch.LEAST_UPPER_BOUND);
    if (index >= 0) {
      var mapping = this._originalMappings[index];

      if (aArgs.column === undefined) {
        var originalLine = mapping.originalLine;

        // Iterate until either we run out of mappings, or we run into
        // a mapping for a different line than the one we found. Since
        // mappings are sorted, this is guaranteed to find all mappings for
        // the line we found.
        while (mapping && mapping.originalLine === originalLine) {
          mappings.push({
            line: util.getArg(mapping, 'generatedLine', null),
            column: util.getArg(mapping, 'generatedColumn', null),
            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
          });

          mapping = this._originalMappings[++index];
        }
      } else {
        var originalColumn = mapping.originalColumn;

        // Iterate until either we run out of mappings, or we run into
        // a mapping for a different line than the one we were searching for.
        // Since mappings are sorted, this is guaranteed to find all mappings for
        // the line we are searching for.
        while (mapping &&
               mapping.originalLine === line &&
               mapping.originalColumn == originalColumn) {
          mappings.push({
            line: util.getArg(mapping, 'generatedLine', null),
            column: util.getArg(mapping, 'generatedColumn', null),
            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
          });

          mapping = this._originalMappings[++index];
        }
      }
    }

    return mappings;
  };

exports.SourceMapConsumer = SourceMapConsumer;

/**
 * A BasicSourceMapConsumer instance represents a parsed source map which we can
 * query for information about the original file positions by giving it a file
 * position in the generated source.
 *
 * The first parameter is the raw source map (either as a JSON string, or
 * already parsed to an object). According to the spec, source maps have the
 * following attributes:
 *
 *   - version: Which version of the source map spec this map is following.
 *   - sources: An array of URLs to the original source files.
 *   - names: An array of identifiers which can be referrenced by individual mappings.
 *   - sourceRoot: Optional. The URL root from which all sources are relative.
 *   - sourcesContent: Optional. An array of contents of the original source files.
 *   - mappings: A string of base64 VLQs which contain the actual mappings.
 *   - file: Optional. The generated file this source map is associated with.
 *
 * Here is an example source map, taken from the source map spec[0]:
 *
 *     {
 *       version : 3,
 *       file: "out.js",
 *       sourceRoot : "",
 *       sources: ["foo.js", "bar.js"],
 *       names: ["src", "maps", "are", "fun"],
 *       mappings: "AA,AB;;ABCDE;"
 *     }
 *
 * The second parameter, if given, is a string whose value is the URL
 * at which the source map was found.  This URL is used to compute the
 * sources array.
 *
 * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit?pli=1#
 */
function BasicSourceMapConsumer(aSourceMap, aSourceMapURL) {
  var sourceMap = aSourceMap;
  if (typeof aSourceMap === 'string') {
    sourceMap = util.parseSourceMapInput(aSourceMap);
  }

  var version = util.getArg(sourceMap, 'version');
  var sources = util.getArg(sourceMap, 'sources');
  // Sass 3.3 leaves out the 'names' array, so we deviate from the spec (which
  // requires the array) to play nice here.
  var names = util.getArg(sourceMap, 'names', []);
  var sourceRoot = util.getArg(sourceMap, 'sourceRoot', null);
  var sourcesContent = util.getArg(sourceMap, 'sourcesContent', null);
  var mappings = util.getArg(sourceMap, 'mappings');
  var file = util.getArg(sourceMap, 'file', null);

  // Once again, Sass deviates from the spec and supplies the version as a
  // string rather than a number, so we use loose equality checking here.
  if (version != this._version) {
    throw new Error('Unsupported version: ' + version);
  }

  if (sourceRoot) {
    sourceRoot = util.normalize(sourceRoot);
  }

  sources = sources
    .map(String)
    // Some source maps produce relative source paths like "./foo.js" instead of
    // "foo.js".  Normalize these first so that future comparisons will succeed.
    // See bugzil.la/1090768.
    .map(util.normalize)
    // Always ensure that absolute sources are internally stored relative to
    // the source root, if the source root is absolute. Not doing this would
    // be particularly problematic when the source root is a prefix of the
    // source (valid, but why??). See github issue #199 and bugzil.la/1188982.
    .map(function (source) {
      return sourceRoot && util.isAbsolute(sourceRoot) && util.isAbsolute(source)
        ? util.relative(sourceRoot, source)
        : source;
    });

  // Pass `true` below to allow duplicate names and sources. While source maps
  // are intended to be compressed and deduplicated, the TypeScript compiler
  // sometimes generates source maps with duplicates in them. See Github issue
  // #72 and bugzil.la/889492.
  this._names = ArraySet.fromArray(names.map(String), true);
  this._sources = ArraySet.fromArray(sources, true);

  this._absoluteSources = this._sources.toArray().map(function (s) {
    return util.computeSourceURL(sourceRoot, s, aSourceMapURL);
  });

  this.sourceRoot = sourceRoot;
  this.sourcesContent = sourcesContent;
  this._mappings = mappings;
  this._sourceMapURL = aSourceMapURL;
  this.file = file;
}

BasicSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
BasicSourceMapConsumer.prototype.consumer = SourceMapConsumer;

/**
 * Utility function to find the index of a source.  Returns -1 if not
 * found.
 */
BasicSourceMapConsumer.prototype._findSourceIndex = function(aSource) {
  var relativeSource = aSource;
  if (this.sourceRoot != null) {
    relativeSource = util.relative(this.sourceRoot, relativeSource);
  }

  if (this._sources.has(relativeSource)) {
    return this._sources.indexOf(relativeSource);
  }

  // Maybe aSource is an absolute URL as returned by |sources|.  In
  // this case we can't simply undo the transform.
  var i;
  for (i = 0; i < this._absoluteSources.length; ++i) {
    if (this._absoluteSources[i] == aSource) {
      return i;
    }
  }

  return -1;
};

/**
 * Create a BasicSourceMapConsumer from a SourceMapGenerator.
 *
 * @param SourceMapGenerator aSourceMap
 *        The source map that will be consumed.
 * @param String aSourceMapURL
 *        The URL at which the source map can be found (optional)
 * @returns BasicSourceMapConsumer
 */
BasicSourceMapConsumer.fromSourceMap =
  function SourceMapConsumer_fromSourceMap(aSourceMap, aSourceMapURL) {
    var smc = Object.create(BasicSourceMapConsumer.prototype);

    var names = smc._names = ArraySet.fromArray(aSourceMap._names.toArray(), true);
    var sources = smc._sources = ArraySet.fromArray(aSourceMap._sources.toArray(), true);
    smc.sourceRoot = aSourceMap._sourceRoot;
    smc.sourcesContent = aSourceMap._generateSourcesContent(smc._sources.toArray(),
                                                            smc.sourceRoot);
    smc.file = aSourceMap._file;
    smc._sourceMapURL = aSourceMapURL;
    smc._absoluteSources = smc._sources.toArray().map(function (s) {
      return util.computeSourceURL(smc.sourceRoot, s, aSourceMapURL);
    });

    // Because we are modifying the entries (by converting string sources and
    // names to indices into the sources and names ArraySets), we have to make
    // a copy of the entry or else bad things happen. Shared mutable state
    // strikes again! See github issue #191.

    var generatedMappings = aSourceMap._mappings.toArray().slice();
    var destGeneratedMappings = smc.__generatedMappings = [];
    var destOriginalMappings = smc.__originalMappings = [];

    for (var i = 0, length = generatedMappings.length; i < length; i++) {
      var srcMapping = generatedMappings[i];
      var destMapping = new Mapping;
      destMapping.generatedLine = srcMapping.generatedLine;
      destMapping.generatedColumn = srcMapping.generatedColumn;

      if (srcMapping.source) {
        destMapping.source = sources.indexOf(srcMapping.source);
        destMapping.originalLine = srcMapping.originalLine;
        destMapping.originalColumn = srcMapping.originalColumn;

        if (srcMapping.name) {
          destMapping.name = names.indexOf(srcMapping.name);
        }

        destOriginalMappings.push(destMapping);
      }

      destGeneratedMappings.push(destMapping);
    }

    quickSort(smc.__originalMappings, util.compareByOriginalPositions);

    return smc;
  };

/**
 * The version of the source mapping spec that we are consuming.
 */
BasicSourceMapConsumer.prototype._version = 3;

/**
 * The list of original sources.
 */
Object.defineProperty(BasicSourceMapConsumer.prototype, 'sources', {
  get: function () {
    return this._absoluteSources.slice();
  }
});

/**
 * Provide the JIT with a nice shape / hidden class.
 */
function Mapping() {
  this.generatedLine = 0;
  this.generatedColumn = 0;
  this.source = null;
  this.originalLine = null;
  this.originalColumn = null;
  this.name = null;
}

/**
 * Parse the mappings in a string in to a data structure which we can easily
 * query (the ordered arrays in the `this.__generatedMappings` and
 * `this.__originalMappings` properties).
 */
BasicSourceMapConsumer.prototype._parseMappings =
  function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
    var generatedLine = 1;
    var previousGeneratedColumn = 0;
    var previousOriginalLine = 0;
    var previousOriginalColumn = 0;
    var previousSource = 0;
    var previousName = 0;
    var length = aStr.length;
    var index = 0;
    var cachedSegments = {};
    var temp = {};
    var originalMappings = [];
    var generatedMappings = [];
    var mapping, str, segment, end, value;

    while (index < length) {
      if (aStr.charAt(index) === ';') {
        generatedLine++;
        index++;
        previousGeneratedColumn = 0;
      }
      else if (aStr.charAt(index) === ',') {
        index++;
      }
      else {
        mapping = new Mapping();
        mapping.generatedLine = generatedLine;

        // Because each offset is encoded relative to the previous one,
        // many segments often have the same encoding. We can exploit this
        // fact by caching the parsed variable length fields of each segment,
        // allowing us to avoid a second parse if we encounter the same
        // segment again.
        for (end = index; end < length; end++) {
          if (this._charIsMappingSeparator(aStr, end)) {
            break;
          }
        }
        str = aStr.slice(index, end);

        segment = cachedSegments[str];
        if (segment) {
          index += str.length;
        } else {
          segment = [];
          while (index < end) {
            base64VLQ.decode(aStr, index, temp);
            value = temp.value;
            index = temp.rest;
            segment.push(value);
          }

          if (segment.length === 2) {
            throw new Error('Found a source, but no line and column');
          }

          if (segment.length === 3) {
            throw new Error('Found a source and line, but no column');
          }

          cachedSegments[str] = segment;
        }

        // Generated column.
        mapping.generatedColumn = previousGeneratedColumn + segment[0];
        previousGeneratedColumn = mapping.generatedColumn;

        if (segment.length > 1) {
          // Original source.
          mapping.source = previousSource + segment[1];
          previousSource += segment[1];

          // Original line.
          mapping.originalLine = previousOriginalLine + segment[2];
          previousOriginalLine = mapping.originalLine;
          // Lines are stored 0-based
          mapping.originalLine += 1;

          // Original column.
          mapping.originalColumn = previousOriginalColumn + segment[3];
          previousOriginalColumn = mapping.originalColumn;

          if (segment.length > 4) {
            // Original name.
            mapping.name = previousName + segment[4];
            previousName += segment[4];
          }
        }

        generatedMappings.push(mapping);
        if (typeof mapping.originalLine === 'number') {
          originalMappings.push(mapping);
        }
      }
    }

    quickSort(generatedMappings, util.compareByGeneratedPositionsDeflated);
    this.__generatedMappings = generatedMappings;

    quickSort(originalMappings, util.compareByOriginalPositions);
    this.__originalMappings = originalMappings;
  };

/**
 * Find the mapping that best matches the hypothetical "needle" mapping that
 * we are searching for in the given "haystack" of mappings.
 */
BasicSourceMapConsumer.prototype._findMapping =
  function SourceMapConsumer_findMapping(aNeedle, aMappings, aLineName,
                                         aColumnName, aComparator, aBias) {
    // To return the position we are searching for, we must first find the
    // mapping for the given position and then return the opposite position it
    // points to. Because the mappings are sorted, we can use binary search to
    // find the best mapping.

    if (aNeedle[aLineName] <= 0) {
      throw new TypeError('Line must be greater than or equal to 1, got '
                          + aNeedle[aLineName]);
    }
    if (aNeedle[aColumnName] < 0) {
      throw new TypeError('Column must be greater than or equal to 0, got '
                          + aNeedle[aColumnName]);
    }

    return binarySearch.search(aNeedle, aMappings, aComparator, aBias);
  };

/**
 * Compute the last column for each generated mapping. The last column is
 * inclusive.
 */
BasicSourceMapConsumer.prototype.computeColumnSpans =
  function SourceMapConsumer_computeColumnSpans() {
    for (var index = 0; index < this._generatedMappings.length; ++index) {
      var mapping = this._generatedMappings[index];

      // Mappings do not contain a field for the last generated columnt. We
      // can come up with an optimistic estimate, however, by assuming that
      // mappings are contiguous (i.e. given two consecutive mappings, the
      // first mapping ends where the second one starts).
      if (index + 1 < this._generatedMappings.length) {
        var nextMapping = this._generatedMappings[index + 1];

        if (mapping.generatedLine === nextMapping.generatedLine) {
          mapping.lastGeneratedColumn = nextMapping.generatedColumn - 1;
          continue;
        }
      }

      // The last mapping for each line spans the entire line.
      mapping.lastGeneratedColumn = Infinity;
    }
  };

/**
 * Returns the original source, line, and column information for the generated
 * source's line and column positions provided. The only argument is an object
 * with the following properties:
 *
 *   - line: The line number in the generated source.  The line number
 *     is 1-based.
 *   - column: The column number in the generated source.  The column
 *     number is 0-based.
 *   - bias: Either 'SourceMapConsumer.GREATEST_LOWER_BOUND' or
 *     'SourceMapConsumer.LEAST_UPPER_BOUND'. Specifies whether to return the
 *     closest element that is smaller than or greater than the one we are
 *     searching for, respectively, if the exact element cannot be found.
 *     Defaults to 'SourceMapConsumer.GREATEST_LOWER_BOUND'.
 *
 * and an object is returned with the following properties:
 *
 *   - source: The original source file, or null.
 *   - line: The line number in the original source, or null.  The
 *     line number is 1-based.
 *   - column: The column number in the original source, or null.  The
 *     column number is 0-based.
 *   - name: The original identifier, or null.
 */
BasicSourceMapConsumer.prototype.originalPositionFor =
  function SourceMapConsumer_originalPositionFor(aArgs) {
    var needle = {
      generatedLine: util.getArg(aArgs, 'line'),
      generatedColumn: util.getArg(aArgs, 'column')
    };

    var index = this._findMapping(
      needle,
      this._generatedMappings,
      "generatedLine",
      "generatedColumn",
      util.compareByGeneratedPositionsDeflated,
      util.getArg(aArgs, 'bias', SourceMapConsumer.GREATEST_LOWER_BOUND)
    );

    if (index >= 0) {
      var mapping = this._generatedMappings[index];

      if (mapping.generatedLine === needle.generatedLine) {
        var source = util.getArg(mapping, 'source', null);
        if (source !== null) {
          source = this._sources.at(source);
          source = util.computeSourceURL(this.sourceRoot, source, this._sourceMapURL);
        }
        var name = util.getArg(mapping, 'name', null);
        if (name !== null) {
          name = this._names.at(name);
        }
        return {
          source: source,
          line: util.getArg(mapping, 'originalLine', null),
          column: util.getArg(mapping, 'originalColumn', null),
          name: name
        };
      }
    }

    return {
      source: null,
      line: null,
      column: null,
      name: null
    };
  };

/**
 * Return true if we have the source content for every source in the source
 * map, false otherwise.
 */
BasicSourceMapConsumer.prototype.hasContentsOfAllSources =
  function BasicSourceMapConsumer_hasContentsOfAllSources() {
    if (!this.sourcesContent) {
      return false;
    }
    return this.sourcesContent.length >= this._sources.size() &&
      !this.sourcesContent.some(function (sc) { return sc == null; });
  };

/**
 * Returns the original source content. The only argument is the url of the
 * original source file. Returns null if no original source content is
 * available.
 */
BasicSourceMapConsumer.prototype.sourceContentFor =
  function SourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
    if (!this.sourcesContent) {
      return null;
    }

    var index = this._findSourceIndex(aSource);
    if (index >= 0) {
      return this.sourcesContent[index];
    }

    var relativeSource = aSource;
    if (this.sourceRoot != null) {
      relativeSource = util.relative(this.sourceRoot, relativeSource);
    }

    var url;
    if (this.sourceRoot != null
        && (url = util.urlParse(this.sourceRoot))) {
      // XXX: file:// URIs and absolute paths lead to unexpected behavior for
      // many users. We can help them out when they expect file:// URIs to
      // behave like it would if they were running a local HTTP server. See
      // https://bugzilla.mozilla.org/show_bug.cgi?id=885597.
      var fileUriAbsPath = relativeSource.replace(/^file:\/\//, "");
      if (url.scheme == "file"
          && this._sources.has(fileUriAbsPath)) {
        return this.sourcesContent[this._sources.indexOf(fileUriAbsPath)]
      }

      if ((!url.path || url.path == "/")
          && this._sources.has("/" + relativeSource)) {
        return this.sourcesContent[this._sources.indexOf("/" + relativeSource)];
      }
    }

    // This function is used recursively from
    // IndexedSourceMapConsumer.prototype.sourceContentFor. In that case, we
    // don't want to throw if we can't find the source - we just want to
    // return null, so we provide a flag to exit gracefully.
    if (nullOnMissing) {
      return null;
    }
    else {
      throw new Error('"' + relativeSource + '" is not in the SourceMap.');
    }
  };

/**
 * Returns the generated line and column information for the original source,
 * line, and column positions provided. The only argument is an object with
 * the following properties:
 *
 *   - source: The filename of the original source.
 *   - line: The line number in the original source.  The line number
 *     is 1-based.
 *   - column: The column number in the original source.  The column
 *     number is 0-based.
 *   - bias: Either 'SourceMapConsumer.GREATEST_LOWER_BOUND' or
 *     'SourceMapConsumer.LEAST_UPPER_BOUND'. Specifies whether to return the
 *     closest element that is smaller than or greater than the one we are
 *     searching for, respectively, if the exact element cannot be found.
 *     Defaults to 'SourceMapConsumer.GREATEST_LOWER_BOUND'.
 *
 * and an object is returned with the following properties:
 *
 *   - line: The line number in the generated source, or null.  The
 *     line number is 1-based.
 *   - column: The column number in the generated source, or null.
 *     The column number is 0-based.
 */
BasicSourceMapConsumer.prototype.generatedPositionFor =
  function SourceMapConsumer_generatedPositionFor(aArgs) {
    var source = util.getArg(aArgs, 'source');
    source = this._findSourceIndex(source);
    if (source < 0) {
      return {
        line: null,
        column: null,
        lastColumn: null
      };
    }

    var needle = {
      source: source,
      originalLine: util.getArg(aArgs, 'line'),
      originalColumn: util.getArg(aArgs, 'column')
    };

    var index = this._findMapping(
      needle,
      this._originalMappings,
      "originalLine",
      "originalColumn",
      util.compareByOriginalPositions,
      util.getArg(aArgs, 'bias', SourceMapConsumer.GREATEST_LOWER_BOUND)
    );

    if (index >= 0) {
      var mapping = this._originalMappings[index];

      if (mapping.source === needle.source) {
        return {
          line: util.getArg(mapping, 'generatedLine', null),
          column: util.getArg(mapping, 'generatedColumn', null),
          lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
        };
      }
    }

    return {
      line: null,
      column: null,
      lastColumn: null
    };
  };

exports.BasicSourceMapConsumer = BasicSourceMapConsumer;

/**
 * An IndexedSourceMapConsumer instance represents a parsed source map which
 * we can query for information. It differs from BasicSourceMapConsumer in
 * that it takes "indexed" source maps (i.e. ones with a "sections" field) as
 * input.
 *
 * The first parameter is a raw source map (either as a JSON string, or already
 * parsed to an object). According to the spec for indexed source maps, they
 * have the following attributes:
 *
 *   - version: Which version of the source map spec this map is following.
 *   - file: Optional. The generated file this source map is associated with.
 *   - sections: A list of section definitions.
 *
 * Each value under the "sections" field has two fields:
 *   - offset: The offset into the original specified at which this section
 *       begins to apply, defined as an object with a "line" and "column"
 *       field.
 *   - map: A source map definition. This source map could also be indexed,
 *       but doesn't have to be.
 *
 * Instead of the "map" field, it's also possible to have a "url" field
 * specifying a URL to retrieve a source map from, but that's currently
 * unsupported.
 *
 * Here's an example source map, taken from the source map spec[0], but
 * modified to omit a section which uses the "url" field.
 *
 *  {
 *    version : 3,
 *    file: "app.js",
 *    sections: [{
 *      offset: {line:100, column:10},
 *      map: {
 *        version : 3,
 *        file: "section.js",
 *        sources: ["foo.js", "bar.js"],
 *        names: ["src", "maps", "are", "fun"],
 *        mappings: "AAAA,E;;ABCDE;"
 *      }
 *    }],
 *  }
 *
 * The second parameter, if given, is a string whose value is the URL
 * at which the source map was found.  This URL is used to compute the
 * sources array.
 *
 * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit#heading=h.535es3xeprgt
 */
function IndexedSourceMapConsumer(aSourceMap, aSourceMapURL) {
  var sourceMap = aSourceMap;
  if (typeof aSourceMap === 'string') {
    sourceMap = util.parseSourceMapInput(aSourceMap);
  }

  var version = util.getArg(sourceMap, 'version');
  var sections = util.getArg(sourceMap, 'sections');

  if (version != this._version) {
    throw new Error('Unsupported version: ' + version);
  }

  this._sources = new ArraySet();
  this._names = new ArraySet();

  var lastOffset = {
    line: -1,
    column: 0
  };
  this._sections = sections.map(function (s) {
    if (s.url) {
      // The url field will require support for asynchronicity.
      // See https://github.com/mozilla/source-map/issues/16
      throw new Error('Support for url field in sections not implemented.');
    }
    var offset = util.getArg(s, 'offset');
    var offsetLine = util.getArg(offset, 'line');
    var offsetColumn = util.getArg(offset, 'column');

    if (offsetLine < lastOffset.line ||
        (offsetLine === lastOffset.line && offsetColumn < lastOffset.column)) {
      throw new Error('Section offsets must be ordered and non-overlapping.');
    }
    lastOffset = offset;

    return {
      generatedOffset: {
        // The offset fields are 0-based, but we use 1-based indices when
        // encoding/decoding from VLQ.
        generatedLine: offsetLine + 1,
        generatedColumn: offsetColumn + 1
      },
      consumer: new SourceMapConsumer(util.getArg(s, 'map'), aSourceMapURL)
    }
  });
}

IndexedSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
IndexedSourceMapConsumer.prototype.constructor = SourceMapConsumer;

/**
 * The version of the source mapping spec that we are consuming.
 */
IndexedSourceMapConsumer.prototype._version = 3;

/**
 * The list of original sources.
 */
Object.defineProperty(IndexedSourceMapConsumer.prototype, 'sources', {
  get: function () {
    var sources = [];
    for (var i = 0; i < this._sections.length; i++) {
      for (var j = 0; j < this._sections[i].consumer.sources.length; j++) {
        sources.push(this._sections[i].consumer.sources[j]);
      }
    }
    return sources;
  }
});

/**
 * Returns the original source, line, and column information for the generated
 * source's line and column positions provided. The only argument is an object
 * with the following properties:
 *
 *   - line: The line number in the generated source.  The line number
 *     is 1-based.
 *   - column: The column number in the generated source.  The column
 *     number is 0-based.
 *
 * and an object is returned with the following properties:
 *
 *   - source: The original source file, or null.
 *   - line: The line number in the original source, or null.  The
 *     line number is 1-based.
 *   - column: The column number in the original source, or null.  The
 *     column number is 0-based.
 *   - name: The original identifier, or null.
 */
IndexedSourceMapConsumer.prototype.originalPositionFor =
  function IndexedSourceMapConsumer_originalPositionFor(aArgs) {
    var needle = {
      generatedLine: util.getArg(aArgs, 'line'),
      generatedColumn: util.getArg(aArgs, 'column')
    };

    // Find the section containing the generated position we're trying to map
    // to an original position.
    var sectionIndex = binarySearch.search(needle, this._sections,
      function(needle, section) {
        var cmp = needle.generatedLine - section.generatedOffset.generatedLine;
        if (cmp) {
          return cmp;
        }

        return (needle.generatedColumn -
                section.generatedOffset.generatedColumn);
      });
    var section = this._sections[sectionIndex];

    if (!section) {
      return {
        source: null,
        line: null,
        column: null,
        name: null
      };
    }

    return section.consumer.originalPositionFor({
      line: needle.generatedLine -
        (section.generatedOffset.generatedLine - 1),
      column: needle.generatedColumn -
        (section.generatedOffset.generatedLine === needle.generatedLine
         ? section.generatedOffset.generatedColumn - 1
         : 0),
      bias: aArgs.bias
    });
  };

/**
 * Return true if we have the source content for every source in the source
 * map, false otherwise.
 */
IndexedSourceMapConsumer.prototype.hasContentsOfAllSources =
  function IndexedSourceMapConsumer_hasContentsOfAllSources() {
    return this._sections.every(function (s) {
      return s.consumer.hasContentsOfAllSources();
    });
  };

/**
 * Returns the original source content. The only argument is the url of the
 * original source file. Returns null if no original source content is
 * available.
 */
IndexedSourceMapConsumer.prototype.sourceContentFor =
  function IndexedSourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
    for (var i = 0; i < this._sections.length; i++) {
      var section = this._sections[i];

      var content = section.consumer.sourceContentFor(aSource, true);
      if (content) {
        return content;
      }
    }
    if (nullOnMissing) {
      return null;
    }
    else {
      throw new Error('"' + aSource + '" is not in the SourceMap.');
    }
  };

/**
 * Returns the generated line and column information for the original source,
 * line, and column positions provided. The only argument is an object with
 * the following properties:
 *
 *   - source: The filename of the original source.
 *   - line: The line number in the original source.  The line number
 *     is 1-based.
 *   - column: The column number in the original source.  The column
 *     number is 0-based.
 *
 * and an object is returned with the following properties:
 *
 *   - line: The line number in the generated source, or null.  The
 *     line number is 1-based. 
 *   - column: The column number in the generated source, or null.
 *     The column number is 0-based.
 */
IndexedSourceMapConsumer.prototype.generatedPositionFor =
  function IndexedSourceMapConsumer_generatedPositionFor(aArgs) {
    for (var i = 0; i < this._sections.length; i++) {
      var section = this._sections[i];

      // Only consider this section if the requested source is in the list of
      // sources of the consumer.
      if (section.consumer._findSourceIndex(util.getArg(aArgs, 'source')) === -1) {
        continue;
      }
      var generatedPosition = section.consumer.generatedPositionFor(aArgs);
      if (generatedPosition) {
        var ret = {
          line: generatedPosition.line +
            (section.generatedOffset.generatedLine - 1),
          column: generatedPosition.column +
            (section.generatedOffset.generatedLine === generatedPosition.line
             ? section.generatedOffset.generatedColumn - 1
             : 0)
        };
        return ret;
      }
    }

    return {
      line: null,
      column: null
    };
  };

/**
 * Parse the mappings in a string in to a data structure which we can easily
 * query (the ordered arrays in the `this.__generatedMappings` and
 * `this.__originalMappings` properties).
 */
IndexedSourceMapConsumer.prototype._parseMappings =
  function IndexedSourceMapConsumer_parseMappings(aStr, aSourceRoot) {
    this.__generatedMappings = [];
    this.__originalMappings = [];
    for (var i = 0; i < this._sections.length; i++) {
      var section = this._sections[i];
      var sectionMappings = section.consumer._generatedMappings;
      for (var j = 0; j < sectionMappings.length; j++) {
        var mapping = sectionMappings[j];

        var source = section.consumer._sources.at(mapping.source);
        source = util.computeSourceURL(section.consumer.sourceRoot, source, this._sourceMapURL);
        this._sources.add(source);
        source = this._sources.indexOf(source);

        var name = null;
        if (mapping.name) {
          name = section.consumer._names.at(mapping.name);
          this._names.add(name);
          name = this._names.indexOf(name);
        }

        // The mappings coming from the consumer for the section have
        // generated positions relative to the start of the section, so we
        // need to offset them to be relative to the start of the concatenated
        // generated file.
        var adjustedMapping = {
          source: source,
          generatedLine: mapping.generatedLine +
            (section.generatedOffset.generatedLine - 1),
          generatedColumn: mapping.generatedColumn +
            (section.generatedOffset.generatedLine === mapping.generatedLine
            ? section.generatedOffset.generatedColumn - 1
            : 0),
          originalLine: mapping.originalLine,
          originalColumn: mapping.originalColumn,
          name: name
        };

        this.__generatedMappings.push(adjustedMapping);
        if (typeof adjustedMapping.originalLine === 'number') {
          this.__originalMappings.push(adjustedMapping);
        }
      }
    }

    quickSort(this.__generatedMappings, util.compareByGeneratedPositionsDeflated);
    quickSort(this.__originalMappings, util.compareByOriginalPositions);
  };

exports.IndexedSourceMapConsumer = IndexedSourceMapConsumer;

},{"./array-set":144,"./base64-vlq":145,"./binary-search":147,"./quick-sort":149,"./util":153}],151:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var base64VLQ = require('./base64-vlq');
var util = require('./util');
var ArraySet = require('./array-set').ArraySet;
var MappingList = require('./mapping-list').MappingList;

/**
 * An instance of the SourceMapGenerator represents a source map which is
 * being built incrementally. You may pass an object with the following
 * properties:
 *
 *   - file: The filename of the generated source.
 *   - sourceRoot: A root for all relative URLs in this source map.
 */
function SourceMapGenerator(aArgs) {
  if (!aArgs) {
    aArgs = {};
  }
  this._file = util.getArg(aArgs, 'file', null);
  this._sourceRoot = util.getArg(aArgs, 'sourceRoot', null);
  this._skipValidation = util.getArg(aArgs, 'skipValidation', false);
  this._sources = new ArraySet();
  this._names = new ArraySet();
  this._mappings = new MappingList();
  this._sourcesContents = null;
}

SourceMapGenerator.prototype._version = 3;

/**
 * Creates a new SourceMapGenerator based on a SourceMapConsumer
 *
 * @param aSourceMapConsumer The SourceMap.
 */
SourceMapGenerator.fromSourceMap =
  function SourceMapGenerator_fromSourceMap(aSourceMapConsumer) {
    var sourceRoot = aSourceMapConsumer.sourceRoot;
    var generator = new SourceMapGenerator({
      file: aSourceMapConsumer.file,
      sourceRoot: sourceRoot
    });
    aSourceMapConsumer.eachMapping(function (mapping) {
      var newMapping = {
        generated: {
          line: mapping.generatedLine,
          column: mapping.generatedColumn
        }
      };

      if (mapping.source != null) {
        newMapping.source = mapping.source;
        if (sourceRoot != null) {
          newMapping.source = util.relative(sourceRoot, newMapping.source);
        }

        newMapping.original = {
          line: mapping.originalLine,
          column: mapping.originalColumn
        };

        if (mapping.name != null) {
          newMapping.name = mapping.name;
        }
      }

      generator.addMapping(newMapping);
    });
    aSourceMapConsumer.sources.forEach(function (sourceFile) {
      var sourceRelative = sourceFile;
      if (sourceRoot !== null) {
        sourceRelative = util.relative(sourceRoot, sourceFile);
      }

      if (!generator._sources.has(sourceRelative)) {
        generator._sources.add(sourceRelative);
      }

      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
      if (content != null) {
        generator.setSourceContent(sourceFile, content);
      }
    });
    return generator;
  };

/**
 * Add a single mapping from original source line and column to the generated
 * source's line and column for this source map being created. The mapping
 * object should have the following properties:
 *
 *   - generated: An object with the generated line and column positions.
 *   - original: An object with the original line and column positions.
 *   - source: The original source file (relative to the sourceRoot).
 *   - name: An optional original token name for this mapping.
 */
SourceMapGenerator.prototype.addMapping =
  function SourceMapGenerator_addMapping(aArgs) {
    var generated = util.getArg(aArgs, 'generated');
    var original = util.getArg(aArgs, 'original', null);
    var source = util.getArg(aArgs, 'source', null);
    var name = util.getArg(aArgs, 'name', null);

    if (!this._skipValidation) {
      this._validateMapping(generated, original, source, name);
    }

    if (source != null) {
      source = String(source);
      if (!this._sources.has(source)) {
        this._sources.add(source);
      }
    }

    if (name != null) {
      name = String(name);
      if (!this._names.has(name)) {
        this._names.add(name);
      }
    }

    this._mappings.add({
      generatedLine: generated.line,
      generatedColumn: generated.column,
      originalLine: original != null && original.line,
      originalColumn: original != null && original.column,
      source: source,
      name: name
    });
  };

/**
 * Set the source content for a source file.
 */
SourceMapGenerator.prototype.setSourceContent =
  function SourceMapGenerator_setSourceContent(aSourceFile, aSourceContent) {
    var source = aSourceFile;
    if (this._sourceRoot != null) {
      source = util.relative(this._sourceRoot, source);
    }

    if (aSourceContent != null) {
      // Add the source content to the _sourcesContents map.
      // Create a new _sourcesContents map if the property is null.
      if (!this._sourcesContents) {
        this._sourcesContents = Object.create(null);
      }
      this._sourcesContents[util.toSetString(source)] = aSourceContent;
    } else if (this._sourcesContents) {
      // Remove the source file from the _sourcesContents map.
      // If the _sourcesContents map is empty, set the property to null.
      delete this._sourcesContents[util.toSetString(source)];
      if (Object.keys(this._sourcesContents).length === 0) {
        this._sourcesContents = null;
      }
    }
  };

/**
 * Applies the mappings of a sub-source-map for a specific source file to the
 * source map being generated. Each mapping to the supplied source file is
 * rewritten using the supplied source map. Note: The resolution for the
 * resulting mappings is the minimium of this map and the supplied map.
 *
 * @param aSourceMapConsumer The source map to be applied.
 * @param aSourceFile Optional. The filename of the source file.
 *        If omitted, SourceMapConsumer's file property will be used.
 * @param aSourceMapPath Optional. The dirname of the path to the source map
 *        to be applied. If relative, it is relative to the SourceMapConsumer.
 *        This parameter is needed when the two source maps aren't in the same
 *        directory, and the source map to be applied contains relative source
 *        paths. If so, those relative source paths need to be rewritten
 *        relative to the SourceMapGenerator.
 */
SourceMapGenerator.prototype.applySourceMap =
  function SourceMapGenerator_applySourceMap(aSourceMapConsumer, aSourceFile, aSourceMapPath) {
    var sourceFile = aSourceFile;
    // If aSourceFile is omitted, we will use the file property of the SourceMap
    if (aSourceFile == null) {
      if (aSourceMapConsumer.file == null) {
        throw new Error(
          'SourceMapGenerator.prototype.applySourceMap requires either an explicit source file, ' +
          'or the source map\'s "file" property. Both were omitted.'
        );
      }
      sourceFile = aSourceMapConsumer.file;
    }
    var sourceRoot = this._sourceRoot;
    // Make "sourceFile" relative if an absolute Url is passed.
    if (sourceRoot != null) {
      sourceFile = util.relative(sourceRoot, sourceFile);
    }
    // Applying the SourceMap can add and remove items from the sources and
    // the names array.
    var newSources = new ArraySet();
    var newNames = new ArraySet();

    // Find mappings for the "sourceFile"
    this._mappings.unsortedForEach(function (mapping) {
      if (mapping.source === sourceFile && mapping.originalLine != null) {
        // Check if it can be mapped by the source map, then update the mapping.
        var original = aSourceMapConsumer.originalPositionFor({
          line: mapping.originalLine,
          column: mapping.originalColumn
        });
        if (original.source != null) {
          // Copy mapping
          mapping.source = original.source;
          if (aSourceMapPath != null) {
            mapping.source = util.join(aSourceMapPath, mapping.source)
          }
          if (sourceRoot != null) {
            mapping.source = util.relative(sourceRoot, mapping.source);
          }
          mapping.originalLine = original.line;
          mapping.originalColumn = original.column;
          if (original.name != null) {
            mapping.name = original.name;
          }
        }
      }

      var source = mapping.source;
      if (source != null && !newSources.has(source)) {
        newSources.add(source);
      }

      var name = mapping.name;
      if (name != null && !newNames.has(name)) {
        newNames.add(name);
      }

    }, this);
    this._sources = newSources;
    this._names = newNames;

    // Copy sourcesContents of applied map.
    aSourceMapConsumer.sources.forEach(function (sourceFile) {
      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
      if (content != null) {
        if (aSourceMapPath != null) {
          sourceFile = util.join(aSourceMapPath, sourceFile);
        }
        if (sourceRoot != null) {
          sourceFile = util.relative(sourceRoot, sourceFile);
        }
        this.setSourceContent(sourceFile, content);
      }
    }, this);
  };

/**
 * A mapping can have one of the three levels of data:
 *
 *   1. Just the generated position.
 *   2. The Generated position, original position, and original source.
 *   3. Generated and original position, original source, as well as a name
 *      token.
 *
 * To maintain consistency, we validate that any new mapping being added falls
 * in to one of these categories.
 */
SourceMapGenerator.prototype._validateMapping =
  function SourceMapGenerator_validateMapping(aGenerated, aOriginal, aSource,
                                              aName) {
    // When aOriginal is truthy but has empty values for .line and .column,
    // it is most likely a programmer error. In this case we throw a very
    // specific error message to try to guide them the right way.
    // For example: https://github.com/Polymer/polymer-bundler/pull/519
    if (aOriginal && typeof aOriginal.line !== 'number' && typeof aOriginal.column !== 'number') {
        throw new Error(
            'original.line and original.column are not numbers -- you probably meant to omit ' +
            'the original mapping entirely and only map the generated position. If so, pass ' +
            'null for the original mapping instead of an object with empty or null values.'
        );
    }

    if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
        && aGenerated.line > 0 && aGenerated.column >= 0
        && !aOriginal && !aSource && !aName) {
      // Case 1.
      return;
    }
    else if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
             && aOriginal && 'line' in aOriginal && 'column' in aOriginal
             && aGenerated.line > 0 && aGenerated.column >= 0
             && aOriginal.line > 0 && aOriginal.column >= 0
             && aSource) {
      // Cases 2 and 3.
      return;
    }
    else {
      throw new Error('Invalid mapping: ' + JSON.stringify({
        generated: aGenerated,
        source: aSource,
        original: aOriginal,
        name: aName
      }));
    }
  };

/**
 * Serialize the accumulated mappings in to the stream of base 64 VLQs
 * specified by the source map format.
 */
SourceMapGenerator.prototype._serializeMappings =
  function SourceMapGenerator_serializeMappings() {
    var previousGeneratedColumn = 0;
    var previousGeneratedLine = 1;
    var previousOriginalColumn = 0;
    var previousOriginalLine = 0;
    var previousName = 0;
    var previousSource = 0;
    var result = '';
    var next;
    var mapping;
    var nameIdx;
    var sourceIdx;

    var mappings = this._mappings.toArray();
    for (var i = 0, len = mappings.length; i < len; i++) {
      mapping = mappings[i];
      next = ''

      if (mapping.generatedLine !== previousGeneratedLine) {
        previousGeneratedColumn = 0;
        while (mapping.generatedLine !== previousGeneratedLine) {
          next += ';';
          previousGeneratedLine++;
        }
      }
      else {
        if (i > 0) {
          if (!util.compareByGeneratedPositionsInflated(mapping, mappings[i - 1])) {
            continue;
          }
          next += ',';
        }
      }

      next += base64VLQ.encode(mapping.generatedColumn
                                 - previousGeneratedColumn);
      previousGeneratedColumn = mapping.generatedColumn;

      if (mapping.source != null) {
        sourceIdx = this._sources.indexOf(mapping.source);
        next += base64VLQ.encode(sourceIdx - previousSource);
        previousSource = sourceIdx;

        // lines are stored 0-based in SourceMap spec version 3
        next += base64VLQ.encode(mapping.originalLine - 1
                                   - previousOriginalLine);
        previousOriginalLine = mapping.originalLine - 1;

        next += base64VLQ.encode(mapping.originalColumn
                                   - previousOriginalColumn);
        previousOriginalColumn = mapping.originalColumn;

        if (mapping.name != null) {
          nameIdx = this._names.indexOf(mapping.name);
          next += base64VLQ.encode(nameIdx - previousName);
          previousName = nameIdx;
        }
      }

      result += next;
    }

    return result;
  };

SourceMapGenerator.prototype._generateSourcesContent =
  function SourceMapGenerator_generateSourcesContent(aSources, aSourceRoot) {
    return aSources.map(function (source) {
      if (!this._sourcesContents) {
        return null;
      }
      if (aSourceRoot != null) {
        source = util.relative(aSourceRoot, source);
      }
      var key = util.toSetString(source);
      return Object.prototype.hasOwnProperty.call(this._sourcesContents, key)
        ? this._sourcesContents[key]
        : null;
    }, this);
  };

/**
 * Externalize the source map.
 */
SourceMapGenerator.prototype.toJSON =
  function SourceMapGenerator_toJSON() {
    var map = {
      version: this._version,
      sources: this._sources.toArray(),
      names: this._names.toArray(),
      mappings: this._serializeMappings()
    };
    if (this._file != null) {
      map.file = this._file;
    }
    if (this._sourceRoot != null) {
      map.sourceRoot = this._sourceRoot;
    }
    if (this._sourcesContents) {
      map.sourcesContent = this._generateSourcesContent(map.sources, map.sourceRoot);
    }

    return map;
  };

/**
 * Render the source map being generated to a string.
 */
SourceMapGenerator.prototype.toString =
  function SourceMapGenerator_toString() {
    return JSON.stringify(this.toJSON());
  };

exports.SourceMapGenerator = SourceMapGenerator;

},{"./array-set":144,"./base64-vlq":145,"./mapping-list":148,"./util":153}],152:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

var SourceMapGenerator = require('./source-map-generator').SourceMapGenerator;
var util = require('./util');

// Matches a Windows-style `\r\n` newline or a `\n` newline used by all other
// operating systems these days (capturing the result).
var REGEX_NEWLINE = /(\r?\n)/;

// Newline character code for charCodeAt() comparisons
var NEWLINE_CODE = 10;

// Private symbol for identifying `SourceNode`s when multiple versions of
// the source-map library are loaded. This MUST NOT CHANGE across
// versions!
var isSourceNode = "$$$isSourceNode$$$";

/**
 * SourceNodes provide a way to abstract over interpolating/concatenating
 * snippets of generated JavaScript source code while maintaining the line and
 * column information associated with the original source code.
 *
 * @param aLine The original line number.
 * @param aColumn The original column number.
 * @param aSource The original source's filename.
 * @param aChunks Optional. An array of strings which are snippets of
 *        generated JS, or other SourceNodes.
 * @param aName The original identifier.
 */
function SourceNode(aLine, aColumn, aSource, aChunks, aName) {
  this.children = [];
  this.sourceContents = {};
  this.line = aLine == null ? null : aLine;
  this.column = aColumn == null ? null : aColumn;
  this.source = aSource == null ? null : aSource;
  this.name = aName == null ? null : aName;
  this[isSourceNode] = true;
  if (aChunks != null) this.add(aChunks);
}

/**
 * Creates a SourceNode from generated code and a SourceMapConsumer.
 *
 * @param aGeneratedCode The generated code
 * @param aSourceMapConsumer The SourceMap for the generated code
 * @param aRelativePath Optional. The path that relative sources in the
 *        SourceMapConsumer should be relative to.
 */
SourceNode.fromStringWithSourceMap =
  function SourceNode_fromStringWithSourceMap(aGeneratedCode, aSourceMapConsumer, aRelativePath) {
    // The SourceNode we want to fill with the generated code
    // and the SourceMap
    var node = new SourceNode();

    // All even indices of this array are one line of the generated code,
    // while all odd indices are the newlines between two adjacent lines
    // (since `REGEX_NEWLINE` captures its match).
    // Processed fragments are accessed by calling `shiftNextLine`.
    var remainingLines = aGeneratedCode.split(REGEX_NEWLINE);
    var remainingLinesIndex = 0;
    var shiftNextLine = function() {
      var lineContents = getNextLine();
      // The last line of a file might not have a newline.
      var newLine = getNextLine() || "";
      return lineContents + newLine;

      function getNextLine() {
        return remainingLinesIndex < remainingLines.length ?
            remainingLines[remainingLinesIndex++] : undefined;
      }
    };

    // We need to remember the position of "remainingLines"
    var lastGeneratedLine = 1, lastGeneratedColumn = 0;

    // The generate SourceNodes we need a code range.
    // To extract it current and last mapping is used.
    // Here we store the last mapping.
    var lastMapping = null;

    aSourceMapConsumer.eachMapping(function (mapping) {
      if (lastMapping !== null) {
        // We add the code from "lastMapping" to "mapping":
        // First check if there is a new line in between.
        if (lastGeneratedLine < mapping.generatedLine) {
          // Associate first line with "lastMapping"
          addMappingWithCode(lastMapping, shiftNextLine());
          lastGeneratedLine++;
          lastGeneratedColumn = 0;
          // The remaining code is added without mapping
        } else {
          // There is no new line in between.
          // Associate the code between "lastGeneratedColumn" and
          // "mapping.generatedColumn" with "lastMapping"
          var nextLine = remainingLines[remainingLinesIndex] || '';
          var code = nextLine.substr(0, mapping.generatedColumn -
                                        lastGeneratedColumn);
          remainingLines[remainingLinesIndex] = nextLine.substr(mapping.generatedColumn -
                                              lastGeneratedColumn);
          lastGeneratedColumn = mapping.generatedColumn;
          addMappingWithCode(lastMapping, code);
          // No more remaining code, continue
          lastMapping = mapping;
          return;
        }
      }
      // We add the generated code until the first mapping
      // to the SourceNode without any mapping.
      // Each line is added as separate string.
      while (lastGeneratedLine < mapping.generatedLine) {
        node.add(shiftNextLine());
        lastGeneratedLine++;
      }
      if (lastGeneratedColumn < mapping.generatedColumn) {
        var nextLine = remainingLines[remainingLinesIndex] || '';
        node.add(nextLine.substr(0, mapping.generatedColumn));
        remainingLines[remainingLinesIndex] = nextLine.substr(mapping.generatedColumn);
        lastGeneratedColumn = mapping.generatedColumn;
      }
      lastMapping = mapping;
    }, this);
    // We have processed all mappings.
    if (remainingLinesIndex < remainingLines.length) {
      if (lastMapping) {
        // Associate the remaining code in the current line with "lastMapping"
        addMappingWithCode(lastMapping, shiftNextLine());
      }
      // and add the remaining lines without any mapping
      node.add(remainingLines.splice(remainingLinesIndex).join(""));
    }

    // Copy sourcesContent into SourceNode
    aSourceMapConsumer.sources.forEach(function (sourceFile) {
      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
      if (content != null) {
        if (aRelativePath != null) {
          sourceFile = util.join(aRelativePath, sourceFile);
        }
        node.setSourceContent(sourceFile, content);
      }
    });

    return node;

    function addMappingWithCode(mapping, code) {
      if (mapping === null || mapping.source === undefined) {
        node.add(code);
      } else {
        var source = aRelativePath
          ? util.join(aRelativePath, mapping.source)
          : mapping.source;
        node.add(new SourceNode(mapping.originalLine,
                                mapping.originalColumn,
                                source,
                                code,
                                mapping.name));
      }
    }
  };

/**
 * Add a chunk of generated JS to this source node.
 *
 * @param aChunk A string snippet of generated JS code, another instance of
 *        SourceNode, or an array where each member is one of those things.
 */
SourceNode.prototype.add = function SourceNode_add(aChunk) {
  if (Array.isArray(aChunk)) {
    aChunk.forEach(function (chunk) {
      this.add(chunk);
    }, this);
  }
  else if (aChunk[isSourceNode] || typeof aChunk === "string") {
    if (aChunk) {
      this.children.push(aChunk);
    }
  }
  else {
    throw new TypeError(
      "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
    );
  }
  return this;
};

/**
 * Add a chunk of generated JS to the beginning of this source node.
 *
 * @param aChunk A string snippet of generated JS code, another instance of
 *        SourceNode, or an array where each member is one of those things.
 */
SourceNode.prototype.prepend = function SourceNode_prepend(aChunk) {
  if (Array.isArray(aChunk)) {
    for (var i = aChunk.length-1; i >= 0; i--) {
      this.prepend(aChunk[i]);
    }
  }
  else if (aChunk[isSourceNode] || typeof aChunk === "string") {
    this.children.unshift(aChunk);
  }
  else {
    throw new TypeError(
      "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
    );
  }
  return this;
};

/**
 * Walk over the tree of JS snippets in this node and its children. The
 * walking function is called once for each snippet of JS and is passed that
 * snippet and the its original associated source's line/column location.
 *
 * @param aFn The traversal function.
 */
SourceNode.prototype.walk = function SourceNode_walk(aFn) {
  var chunk;
  for (var i = 0, len = this.children.length; i < len; i++) {
    chunk = this.children[i];
    if (chunk[isSourceNode]) {
      chunk.walk(aFn);
    }
    else {
      if (chunk !== '') {
        aFn(chunk, { source: this.source,
                     line: this.line,
                     column: this.column,
                     name: this.name });
      }
    }
  }
};

/**
 * Like `String.prototype.join` except for SourceNodes. Inserts `aStr` between
 * each of `this.children`.
 *
 * @param aSep The separator.
 */
SourceNode.prototype.join = function SourceNode_join(aSep) {
  var newChildren;
  var i;
  var len = this.children.length;
  if (len > 0) {
    newChildren = [];
    for (i = 0; i < len-1; i++) {
      newChildren.push(this.children[i]);
      newChildren.push(aSep);
    }
    newChildren.push(this.children[i]);
    this.children = newChildren;
  }
  return this;
};

/**
 * Call String.prototype.replace on the very right-most source snippet. Useful
 * for trimming whitespace from the end of a source node, etc.
 *
 * @param aPattern The pattern to replace.
 * @param aReplacement The thing to replace the pattern with.
 */
SourceNode.prototype.replaceRight = function SourceNode_replaceRight(aPattern, aReplacement) {
  var lastChild = this.children[this.children.length - 1];
  if (lastChild[isSourceNode]) {
    lastChild.replaceRight(aPattern, aReplacement);
  }
  else if (typeof lastChild === 'string') {
    this.children[this.children.length - 1] = lastChild.replace(aPattern, aReplacement);
  }
  else {
    this.children.push(''.replace(aPattern, aReplacement));
  }
  return this;
};

/**
 * Set the source content for a source file. This will be added to the SourceMapGenerator
 * in the sourcesContent field.
 *
 * @param aSourceFile The filename of the source file
 * @param aSourceContent The content of the source file
 */
SourceNode.prototype.setSourceContent =
  function SourceNode_setSourceContent(aSourceFile, aSourceContent) {
    this.sourceContents[util.toSetString(aSourceFile)] = aSourceContent;
  };

/**
 * Walk over the tree of SourceNodes. The walking function is called for each
 * source file content and is passed the filename and source content.
 *
 * @param aFn The traversal function.
 */
SourceNode.prototype.walkSourceContents =
  function SourceNode_walkSourceContents(aFn) {
    for (var i = 0, len = this.children.length; i < len; i++) {
      if (this.children[i][isSourceNode]) {
        this.children[i].walkSourceContents(aFn);
      }
    }

    var sources = Object.keys(this.sourceContents);
    for (var i = 0, len = sources.length; i < len; i++) {
      aFn(util.fromSetString(sources[i]), this.sourceContents[sources[i]]);
    }
  };

/**
 * Return the string representation of this source node. Walks over the tree
 * and concatenates all the various snippets together to one string.
 */
SourceNode.prototype.toString = function SourceNode_toString() {
  var str = "";
  this.walk(function (chunk) {
    str += chunk;
  });
  return str;
};

/**
 * Returns the string representation of this source node along with a source
 * map.
 */
SourceNode.prototype.toStringWithSourceMap = function SourceNode_toStringWithSourceMap(aArgs) {
  var generated = {
    code: "",
    line: 1,
    column: 0
  };
  var map = new SourceMapGenerator(aArgs);
  var sourceMappingActive = false;
  var lastOriginalSource = null;
  var lastOriginalLine = null;
  var lastOriginalColumn = null;
  var lastOriginalName = null;
  this.walk(function (chunk, original) {
    generated.code += chunk;
    if (original.source !== null
        && original.line !== null
        && original.column !== null) {
      if(lastOriginalSource !== original.source
         || lastOriginalLine !== original.line
         || lastOriginalColumn !== original.column
         || lastOriginalName !== original.name) {
        map.addMapping({
          source: original.source,
          original: {
            line: original.line,
            column: original.column
          },
          generated: {
            line: generated.line,
            column: generated.column
          },
          name: original.name
        });
      }
      lastOriginalSource = original.source;
      lastOriginalLine = original.line;
      lastOriginalColumn = original.column;
      lastOriginalName = original.name;
      sourceMappingActive = true;
    } else if (sourceMappingActive) {
      map.addMapping({
        generated: {
          line: generated.line,
          column: generated.column
        }
      });
      lastOriginalSource = null;
      sourceMappingActive = false;
    }
    for (var idx = 0, length = chunk.length; idx < length; idx++) {
      if (chunk.charCodeAt(idx) === NEWLINE_CODE) {
        generated.line++;
        generated.column = 0;
        // Mappings end at eol
        if (idx + 1 === length) {
          lastOriginalSource = null;
          sourceMappingActive = false;
        } else if (sourceMappingActive) {
          map.addMapping({
            source: original.source,
            original: {
              line: original.line,
              column: original.column
            },
            generated: {
              line: generated.line,
              column: generated.column
            },
            name: original.name
          });
        }
      } else {
        generated.column++;
      }
    }
  });
  this.walkSourceContents(function (sourceFile, sourceContent) {
    map.setSourceContent(sourceFile, sourceContent);
  });

  return { code: generated.code, map: map };
};

exports.SourceNode = SourceNode;

},{"./source-map-generator":151,"./util":153}],153:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */

/**
 * This is a helper function for getting values from parameter/options
 * objects.
 *
 * @param args The object we are extracting values from
 * @param name The name of the property we are getting.
 * @param defaultValue An optional value to return if the property is missing
 * from the object. If this is not specified and the property is missing, an
 * error will be thrown.
 */
function getArg(aArgs, aName, aDefaultValue) {
  if (aName in aArgs) {
    return aArgs[aName];
  } else if (arguments.length === 3) {
    return aDefaultValue;
  } else {
    throw new Error('"' + aName + '" is a required argument.');
  }
}
exports.getArg = getArg;

var urlRegexp = /^(?:([\w+\-.]+):)?\/\/(?:(\w+:\w+)@)?([\w.-]*)(?::(\d+))?(.*)$/;
var dataUrlRegexp = /^data:.+\,.+$/;

function urlParse(aUrl) {
  var match = aUrl.match(urlRegexp);
  if (!match) {
    return null;
  }
  return {
    scheme: match[1],
    auth: match[2],
    host: match[3],
    port: match[4],
    path: match[5]
  };
}
exports.urlParse = urlParse;

function urlGenerate(aParsedUrl) {
  var url = '';
  if (aParsedUrl.scheme) {
    url += aParsedUrl.scheme + ':';
  }
  url += '//';
  if (aParsedUrl.auth) {
    url += aParsedUrl.auth + '@';
  }
  if (aParsedUrl.host) {
    url += aParsedUrl.host;
  }
  if (aParsedUrl.port) {
    url += ":" + aParsedUrl.port
  }
  if (aParsedUrl.path) {
    url += aParsedUrl.path;
  }
  return url;
}
exports.urlGenerate = urlGenerate;

/**
 * Normalizes a path, or the path portion of a URL:
 *
 * - Replaces consecutive slashes with one slash.
 * - Removes unnecessary '.' parts.
 * - Removes unnecessary '<dir>/..' parts.
 *
 * Based on code in the Node.js 'path' core module.
 *
 * @param aPath The path or url to normalize.
 */
function normalize(aPath) {
  var path = aPath;
  var url = urlParse(aPath);
  if (url) {
    if (!url.path) {
      return aPath;
    }
    path = url.path;
  }
  var isAbsolute = exports.isAbsolute(path);

  var parts = path.split(/\/+/);
  for (var part, up = 0, i = parts.length - 1; i >= 0; i--) {
    part = parts[i];
    if (part === '.') {
      parts.splice(i, 1);
    } else if (part === '..') {
      up++;
    } else if (up > 0) {
      if (part === '') {
        // The first part is blank if the path is absolute. Trying to go
        // above the root is a no-op. Therefore we can remove all '..' parts
        // directly after the root.
        parts.splice(i + 1, up);
        up = 0;
      } else {
        parts.splice(i, 2);
        up--;
      }
    }
  }
  path = parts.join('/');

  if (path === '') {
    path = isAbsolute ? '/' : '.';
  }

  if (url) {
    url.path = path;
    return urlGenerate(url);
  }
  return path;
}
exports.normalize = normalize;

/**
 * Joins two paths/URLs.
 *
 * @param aRoot The root path or URL.
 * @param aPath The path or URL to be joined with the root.
 *
 * - If aPath is a URL or a data URI, aPath is returned, unless aPath is a
 *   scheme-relative URL: Then the scheme of aRoot, if any, is prepended
 *   first.
 * - Otherwise aPath is a path. If aRoot is a URL, then its path portion
 *   is updated with the result and aRoot is returned. Otherwise the result
 *   is returned.
 *   - If aPath is absolute, the result is aPath.
 *   - Otherwise the two paths are joined with a slash.
 * - Joining for example 'http://' and 'www.example.com' is also supported.
 */
function join(aRoot, aPath) {
  if (aRoot === "") {
    aRoot = ".";
  }
  if (aPath === "") {
    aPath = ".";
  }
  var aPathUrl = urlParse(aPath);
  var aRootUrl = urlParse(aRoot);
  if (aRootUrl) {
    aRoot = aRootUrl.path || '/';
  }

  // `join(foo, '//www.example.org')`
  if (aPathUrl && !aPathUrl.scheme) {
    if (aRootUrl) {
      aPathUrl.scheme = aRootUrl.scheme;
    }
    return urlGenerate(aPathUrl);
  }

  if (aPathUrl || aPath.match(dataUrlRegexp)) {
    return aPath;
  }

  // `join('http://', 'www.example.com')`
  if (aRootUrl && !aRootUrl.host && !aRootUrl.path) {
    aRootUrl.host = aPath;
    return urlGenerate(aRootUrl);
  }

  var joined = aPath.charAt(0) === '/'
    ? aPath
    : normalize(aRoot.replace(/\/+$/, '') + '/' + aPath);

  if (aRootUrl) {
    aRootUrl.path = joined;
    return urlGenerate(aRootUrl);
  }
  return joined;
}
exports.join = join;

exports.isAbsolute = function (aPath) {
  return aPath.charAt(0) === '/' || urlRegexp.test(aPath);
};

/**
 * Make a path relative to a URL or another path.
 *
 * @param aRoot The root path or URL.
 * @param aPath The path or URL to be made relative to aRoot.
 */
function relative(aRoot, aPath) {
  if (aRoot === "") {
    aRoot = ".";
  }

  aRoot = aRoot.replace(/\/$/, '');

  // It is possible for the path to be above the root. In this case, simply
  // checking whether the root is a prefix of the path won't work. Instead, we
  // need to remove components from the root one by one, until either we find
  // a prefix that fits, or we run out of components to remove.
  var level = 0;
  while (aPath.indexOf(aRoot + '/') !== 0) {
    var index = aRoot.lastIndexOf("/");
    if (index < 0) {
      return aPath;
    }

    // If the only part of the root that is left is the scheme (i.e. http://,
    // file:///, etc.), one or more slashes (/), or simply nothing at all, we
    // have exhausted all components, so the path is not relative to the root.
    aRoot = aRoot.slice(0, index);
    if (aRoot.match(/^([^\/]+:\/)?\/*$/)) {
      return aPath;
    }

    ++level;
  }

  // Make sure we add a "../" for each component we removed from the root.
  return Array(level + 1).join("../") + aPath.substr(aRoot.length + 1);
}
exports.relative = relative;

var supportsNullProto = (function () {
  var obj = Object.create(null);
  return !('__proto__' in obj);
}());

function identity (s) {
  return s;
}

/**
 * Because behavior goes wacky when you set `__proto__` on objects, we
 * have to prefix all the strings in our set with an arbitrary character.
 *
 * See https://github.com/mozilla/source-map/pull/31 and
 * https://github.com/mozilla/source-map/issues/30
 *
 * @param String aStr
 */
function toSetString(aStr) {
  if (isProtoString(aStr)) {
    return '$' + aStr;
  }

  return aStr;
}
exports.toSetString = supportsNullProto ? identity : toSetString;

function fromSetString(aStr) {
  if (isProtoString(aStr)) {
    return aStr.slice(1);
  }

  return aStr;
}
exports.fromSetString = supportsNullProto ? identity : fromSetString;

function isProtoString(s) {
  if (!s) {
    return false;
  }

  var length = s.length;

  if (length < 9 /* "__proto__".length */) {
    return false;
  }

  if (s.charCodeAt(length - 1) !== 95  /* '_' */ ||
      s.charCodeAt(length - 2) !== 95  /* '_' */ ||
      s.charCodeAt(length - 3) !== 111 /* 'o' */ ||
      s.charCodeAt(length - 4) !== 116 /* 't' */ ||
      s.charCodeAt(length - 5) !== 111 /* 'o' */ ||
      s.charCodeAt(length - 6) !== 114 /* 'r' */ ||
      s.charCodeAt(length - 7) !== 112 /* 'p' */ ||
      s.charCodeAt(length - 8) !== 95  /* '_' */ ||
      s.charCodeAt(length - 9) !== 95  /* '_' */) {
    return false;
  }

  for (var i = length - 10; i >= 0; i--) {
    if (s.charCodeAt(i) !== 36 /* '$' */) {
      return false;
    }
  }

  return true;
}

/**
 * Comparator between two mappings where the original positions are compared.
 *
 * Optionally pass in `true` as `onlyCompareGenerated` to consider two
 * mappings with the same original source/line/column, but different generated
 * line and column the same. Useful when searching for a mapping with a
 * stubbed out mapping.
 */
function compareByOriginalPositions(mappingA, mappingB, onlyCompareOriginal) {
  var cmp = strcmp(mappingA.source, mappingB.source);
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalLine - mappingB.originalLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalColumn - mappingB.originalColumn;
  if (cmp !== 0 || onlyCompareOriginal) {
    return cmp;
  }

  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.generatedLine - mappingB.generatedLine;
  if (cmp !== 0) {
    return cmp;
  }

  return strcmp(mappingA.name, mappingB.name);
}
exports.compareByOriginalPositions = compareByOriginalPositions;

/**
 * Comparator between two mappings with deflated source and name indices where
 * the generated positions are compared.
 *
 * Optionally pass in `true` as `onlyCompareGenerated` to consider two
 * mappings with the same generated line and column, but different
 * source/name/original line and column the same. Useful when searching for a
 * mapping with a stubbed out mapping.
 */
function compareByGeneratedPositionsDeflated(mappingA, mappingB, onlyCompareGenerated) {
  var cmp = mappingA.generatedLine - mappingB.generatedLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
  if (cmp !== 0 || onlyCompareGenerated) {
    return cmp;
  }

  cmp = strcmp(mappingA.source, mappingB.source);
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalLine - mappingB.originalLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalColumn - mappingB.originalColumn;
  if (cmp !== 0) {
    return cmp;
  }

  return strcmp(mappingA.name, mappingB.name);
}
exports.compareByGeneratedPositionsDeflated = compareByGeneratedPositionsDeflated;

function strcmp(aStr1, aStr2) {
  if (aStr1 === aStr2) {
    return 0;
  }

  if (aStr1 === null) {
    return 1; // aStr2 !== null
  }

  if (aStr2 === null) {
    return -1; // aStr1 !== null
  }

  if (aStr1 > aStr2) {
    return 1;
  }

  return -1;
}

/**
 * Comparator between two mappings with inflated source and name strings where
 * the generated positions are compared.
 */
function compareByGeneratedPositionsInflated(mappingA, mappingB) {
  var cmp = mappingA.generatedLine - mappingB.generatedLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = strcmp(mappingA.source, mappingB.source);
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalLine - mappingB.originalLine;
  if (cmp !== 0) {
    return cmp;
  }

  cmp = mappingA.originalColumn - mappingB.originalColumn;
  if (cmp !== 0) {
    return cmp;
  }

  return strcmp(mappingA.name, mappingB.name);
}
exports.compareByGeneratedPositionsInflated = compareByGeneratedPositionsInflated;

/**
 * Strip any JSON XSSI avoidance prefix from the string (as documented
 * in the source maps specification), and then parse the string as
 * JSON.
 */
function parseSourceMapInput(str) {
  return JSON.parse(str.replace(/^\)]}'[^\n]*\n/, ''));
}
exports.parseSourceMapInput = parseSourceMapInput;

/**
 * Compute the URL of a source given the the source root, the source's
 * URL, and the source map's URL.
 */
function computeSourceURL(sourceRoot, sourceURL, sourceMapURL) {
  sourceURL = sourceURL || '';

  if (sourceRoot) {
    // This follows what Chrome does.
    if (sourceRoot[sourceRoot.length - 1] !== '/' && sourceURL[0] !== '/') {
      sourceRoot += '/';
    }
    // The spec says:
    //   Line 4: An optional source root, useful for relocating source
    //   files on a server or removing repeated values in the
    //   “sources” entry.  This value is prepended to the individual
    //   entries in the “source” field.
    sourceURL = sourceRoot + sourceURL;
  }

  // Historically, SourceMapConsumer did not take the sourceMapURL as
  // a parameter.  This mode is still somewhat supported, which is why
  // this code block is conditional.  However, it's preferable to pass
  // the source map URL to SourceMapConsumer, so that this function
  // can implement the source URL resolution algorithm as outlined in
  // the spec.  This block is basically the equivalent of:
  //    new URL(sourceURL, sourceMapURL).toString()
  // ... except it avoids using URL, which wasn't available in the
  // older releases of node still supported by this library.
  //
  // The spec says:
  //   If the sources are not absolute URLs after prepending of the
  //   “sourceRoot”, the sources are resolved relative to the
  //   SourceMap (like resolving script src in a html document).
  if (sourceMapURL) {
    var parsed = urlParse(sourceMapURL);
    if (!parsed) {
      throw new Error("sourceMapURL could not be parsed");
    }
    if (parsed.path) {
      // Strip the last path component, but keep the "/".
      var index = parsed.path.lastIndexOf('/');
      if (index >= 0) {
        parsed.path = parsed.path.substring(0, index + 1);
      }
    }
    sourceURL = join(urlGenerate(parsed), sourceURL);
  }

  return normalize(sourceURL);
}
exports.computeSourceURL = computeSourceURL;

},{}],154:[function(require,module,exports){
/*
 * Copyright 2009-2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE.txt or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
exports.SourceMapGenerator = require('./lib/source-map-generator').SourceMapGenerator;
exports.SourceMapConsumer = require('./lib/source-map-consumer').SourceMapConsumer;
exports.SourceNode = require('./lib/source-node').SourceNode;

},{"./lib/source-map-consumer":150,"./lib/source-map-generator":151,"./lib/source-node":152}],155:[function(require,module,exports){
(function (global){
var ClientRequest = require('./lib/request')
var response = require('./lib/response')
var extend = require('xtend')
var statusCodes = require('builtin-status-codes')
var url = require('url')

var http = exports

http.request = function (opts, cb) {
        if (typeof opts === 'string')
                opts = url.parse(opts)
        else
                opts = extend(opts)

        // Normally, the page is loaded from http or https, so not specifying a protocol
        // will result in a (valid) protocol-relative url. However, this won't work if
        // the protocol is something else, like 'file:'
        var defaultProtocol = global.location.protocol.search(/^https?:$/) === -1 ? 'http:' : ''

        var protocol = opts.protocol || defaultProtocol
        var host = opts.hostname || opts.host
        var port = opts.port
        var path = opts.path || '/'

        // Necessary for IPv6 addresses
        if (host && host.indexOf(':') !== -1)
                host = '[' + host + ']'

        // This may be a relative url. The browser should always be able to interpret it correctly.
        opts.url = (host ? (protocol + '//' + host) : '') + (port ? ':' + port : '') + path
        opts.method = (opts.method || 'GET').toUpperCase()
        opts.headers = opts.headers || {}

        // Also valid opts.auth, opts.mode

        var req = new ClientRequest(opts)
        if (cb)
                req.on('response', cb)
        return req
}

http.get = function get (opts, cb) {
        var req = http.request(opts, cb)
        req.end()
        return req
}

http.ClientRequest = ClientRequest
http.IncomingMessage = response.IncomingMessage

http.Agent = function () {}
http.Agent.defaultMaxSockets = 4

http.globalAgent = new http.Agent()

http.STATUS_CODES = statusCodes

http.METHODS = [
        'CHECKOUT',
        'CONNECT',
        'COPY',
        'DELETE',
        'GET',
        'HEAD',
        'LOCK',
        'M-SEARCH',
        'MERGE',
        'MKACTIVITY',
        'MKCOL',
        'MOVE',
        'NOTIFY',
        'OPTIONS',
        'PATCH',
        'POST',
        'PROPFIND',
        'PROPPATCH',
        'PURGE',
        'PUT',
        'REPORT',
        'SEARCH',
        'SUBSCRIBE',
        'TRACE',
        'UNLOCK',
        'UNSUBSCRIBE'
]
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./lib/request":157,"./lib/response":158,"builtin-status-codes":5,"url":162,"xtend":165}],156:[function(require,module,exports){
(function (global){
exports.fetch = isFunction(global.fetch) && isFunction(global.ReadableStream)

exports.writableStream = isFunction(global.WritableStream)

exports.abortController = isFunction(global.AbortController)

exports.blobConstructor = false
try {
        new Blob([new ArrayBuffer(1)])
        exports.blobConstructor = true
} catch (e) {}

// The xhr request to example.com may violate some restrictive CSP configurations,
// so if we're running in a browser that supports `fetch`, avoid calling getXHR()
// and assume support for certain features below.
var xhr
function getXHR () {
        // Cache the xhr value
        if (xhr !== undefined) return xhr

        if (global.XMLHttpRequest) {
                xhr = new global.XMLHttpRequest()
                // If XDomainRequest is available (ie only, where xhr might not work
                // cross domain), use the page location. Otherwise use example.com
                // Note: this doesn't actually make an http request.
                try {
                        xhr.open('GET', global.XDomainRequest ? '/' : 'https://example.com')
                } catch(e) {
                        xhr = null
                }
        } else {
                // Service workers don't have XHR
                xhr = null
        }
        return xhr
}

function checkTypeSupport (type) {
        var xhr = getXHR()
        if (!xhr) return false
        try {
                xhr.responseType = type
                return xhr.responseType === type
        } catch (e) {}
        return false
}

// For some strange reason, Safari 7.0 reports typeof global.ArrayBuffer === 'object'.
// Safari 7.1 appears to have fixed this bug.
var haveArrayBuffer = typeof global.ArrayBuffer !== 'undefined'
var haveSlice = haveArrayBuffer && isFunction(global.ArrayBuffer.prototype.slice)

// If fetch is supported, then arraybuffer will be supported too. Skip calling
// checkTypeSupport(), since that calls getXHR().
exports.arraybuffer = exports.fetch || (haveArrayBuffer && checkTypeSupport('arraybuffer'))

// These next two tests unavoidably show warnings in Chrome. Since fetch will always
// be used if it's available, just return false for these to avoid the warnings.
exports.msstream = !exports.fetch && haveSlice && checkTypeSupport('ms-stream')
exports.mozchunkedarraybuffer = !exports.fetch && haveArrayBuffer &&
        checkTypeSupport('moz-chunked-arraybuffer')

// If fetch is supported, then overrideMimeType will be supported too. Skip calling
// getXHR().
exports.overrideMimeType = exports.fetch || (getXHR() ? isFunction(getXHR().overrideMimeType) : false)

exports.vbArray = isFunction(global.VBArray)

function isFunction (value) {
        return typeof value === 'function'
}

xhr = null // Help gc

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],157:[function(require,module,exports){
(function (process,global,Buffer){
var capability = require('./capability')
var inherits = require('inherits')
var response = require('./response')
var stream = require('readable-stream')
var toArrayBuffer = require('to-arraybuffer')

var IncomingMessage = response.IncomingMessage
var rStates = response.readyStates

function decideMode (preferBinary, useFetch) {
        if (capability.fetch && useFetch) {
                return 'fetch'
        } else if (capability.mozchunkedarraybuffer) {
                return 'moz-chunked-arraybuffer'
        } else if (capability.msstream) {
                return 'ms-stream'
        } else if (capability.arraybuffer && preferBinary) {
                return 'arraybuffer'
        } else if (capability.vbArray && preferBinary) {
                return 'text:vbarray'
        } else {
                return 'text'
        }
}

var ClientRequest = module.exports = function (opts) {
        var self = this
        stream.Writable.call(self)

        self._opts = opts
        self._body = []
        self._headers = {}
        if (opts.auth)
                self.setHeader('Authorization', 'Basic ' + new Buffer(opts.auth).toString('base64'))
        Object.keys(opts.headers).forEach(function (name) {
                self.setHeader(name, opts.headers[name])
        })

        var preferBinary
        var useFetch = true
        if (opts.mode === 'disable-fetch' || ('requestTimeout' in opts && !capability.abortController)) {
                // If the use of XHR should be preferred. Not typically needed.
                useFetch = false
                preferBinary = true
        } else if (opts.mode === 'prefer-streaming') {
                // If streaming is a high priority but binary compatibility and
                // the accuracy of the 'content-type' header aren't
                preferBinary = false
        } else if (opts.mode === 'allow-wrong-content-type') {
                // If streaming is more important than preserving the 'content-type' header
                preferBinary = !capability.overrideMimeType
        } else if (!opts.mode || opts.mode === 'default' || opts.mode === 'prefer-fast') {
                // Use binary if text streaming may corrupt data or the content-type header, or for speed
                preferBinary = true
        } else {
                throw new Error('Invalid value for opts.mode')
        }
        self._mode = decideMode(preferBinary, useFetch)
        self._fetchTimer = null

        self.on('finish', function () {
                self._onFinish()
        })
}

inherits(ClientRequest, stream.Writable)

ClientRequest.prototype.setHeader = function (name, value) {
        var self = this
        var lowerName = name.toLowerCase()
        // This check is not necessary, but it prevents warnings from browsers about setting unsafe
        // headers. To be honest I'm not entirely sure hiding these warnings is a good thing, but
        // http-browserify did it, so I will too.
        if (unsafeHeaders.indexOf(lowerName) !== -1)
                return

        self._headers[lowerName] = {
                name: name,
                value: value
        }
}

ClientRequest.prototype.getHeader = function (name) {
        var header = this._headers[name.toLowerCase()]
        if (header)
                return header.value
        return null
}

ClientRequest.prototype.removeHeader = function (name) {
        var self = this
        delete self._headers[name.toLowerCase()]
}

ClientRequest.prototype._onFinish = function () {
        var self = this

        if (self._destroyed)
                return
        var opts = self._opts

        var headersObj = self._headers
        var body = null
        if (opts.method !== 'GET' && opts.method !== 'HEAD') {
                if (capability.arraybuffer) {
                        body = toArrayBuffer(Buffer.concat(self._body))
                } else if (capability.blobConstructor) {
                        body = new global.Blob(self._body.map(function (buffer) {
                                return toArrayBuffer(buffer)
                        }), {
                                type: (headersObj['content-type'] || {}).value || ''
                        })
                } else {
                        // get utf8 string
                        body = Buffer.concat(self._body).toString()
                }
        }

        // create flattened list of headers
        var headersList = []
        Object.keys(headersObj).forEach(function (keyName) {
                var name = headersObj[keyName].name
                var value = headersObj[keyName].value
                if (Array.isArray(value)) {
                        value.forEach(function (v) {
                                headersList.push([name, v])
                        })
                } else {
                        headersList.push([name, value])
                }
        })

        if (self._mode === 'fetch') {
                var signal = null
                var fetchTimer = null
                if (capability.abortController) {
                        var controller = new AbortController()
                        signal = controller.signal
                        self._fetchAbortController = controller

                        if ('requestTimeout' in opts && opts.requestTimeout !== 0) {
                                self._fetchTimer = global.setTimeout(function () {
                                        self.emit('requestTimeout')
                                        if (self._fetchAbortController)
                                                self._fetchAbortController.abort()
                                }, opts.requestTimeout)
                        }
                }

                global.fetch(self._opts.url, {
                        method: self._opts.method,
                        headers: headersList,
                        body: body || undefined,
                        mode: 'cors',
                        credentials: opts.withCredentials ? 'include' : 'same-origin',
                        signal: signal
                }).then(function (response) {
                        self._fetchResponse = response
                        self._connect()
                }, function (reason) {
                        global.clearTimeout(self._fetchTimer)
                        if (!self._destroyed)
                                self.emit('error', reason)
                })
        } else {
                var xhr = self._xhr = new global.XMLHttpRequest()
                try {
                        xhr.open(self._opts.method, self._opts.url, true)
                } catch (err) {
                        process.nextTick(function () {
                                self.emit('error', err)
                        })
                        return
                }

                // Can't set responseType on really old browsers
                if ('responseType' in xhr)
                        xhr.responseType = self._mode.split(':')[0]

                if ('withCredentials' in xhr)
                        xhr.withCredentials = !!opts.withCredentials

                if (self._mode === 'text' && 'overrideMimeType' in xhr)
                        xhr.overrideMimeType('text/plain; charset=x-user-defined')

                if ('requestTimeout' in opts) {
                        xhr.timeout = opts.requestTimeout
                        xhr.ontimeout = function () {
                                self.emit('requestTimeout')
                        }
                }

                headersList.forEach(function (header) {
                        xhr.setRequestHeader(header[0], header[1])
                })

                self._response = null
                xhr.onreadystatechange = function () {
                        switch (xhr.readyState) {
                                case rStates.LOADING:
                                case rStates.DONE:
                                        self._onXHRProgress()
                                        break
                        }
                }
                // Necessary for streaming in Firefox, since xhr.response is ONLY defined
                // in onprogress, not in onreadystatechange with xhr.readyState = 3
                if (self._mode === 'moz-chunked-arraybuffer') {
                        xhr.onprogress = function () {
                                self._onXHRProgress()
                        }
                }

                xhr.onerror = function () {
                        if (self._destroyed)
                                return
                        self.emit('error', new Error('XHR error'))
                }

                try {
                        xhr.send(body)
                } catch (err) {
                        process.nextTick(function () {
                                self.emit('error', err)
                        })
                        return
                }
        }
}

/**
 * Checks if xhr.status is readable and non-zero, indicating no error.
 * Even though the spec says it should be available in readyState 3,
 * accessing it throws an exception in IE8
 */
function statusValid (xhr) {
        try {
                var status = xhr.status
                return (status !== null && status !== 0)
        } catch (e) {
                return false
        }
}

ClientRequest.prototype._onXHRProgress = function () {
        var self = this

        if (!statusValid(self._xhr) || self._destroyed)
                return

        if (!self._response)
                self._connect()

        self._response._onXHRProgress()
}

ClientRequest.prototype._connect = function () {
        var self = this

        if (self._destroyed)
                return

        self._response = new IncomingMessage(self._xhr, self._fetchResponse, self._mode, self._fetchTimer)
        self._response.on('error', function(err) {
                self.emit('error', err)
        })

        self.emit('response', self._response)
}

ClientRequest.prototype._write = function (chunk, encoding, cb) {
        var self = this

        self._body.push(chunk)
        cb()
}

ClientRequest.prototype.abort = ClientRequest.prototype.destroy = function () {
        var self = this
        self._destroyed = true
        global.clearTimeout(self._fetchTimer)
        if (self._response)
                self._response._destroyed = true
        if (self._xhr)
                self._xhr.abort()
        else if (self._fetchAbortController)
                self._fetchAbortController.abort()
}

ClientRequest.prototype.end = function (data, encoding, cb) {
        var self = this
        if (typeof data === 'function') {
                cb = data
                data = undefined
        }

        stream.Writable.prototype.end.call(self, data, encoding, cb)
}

ClientRequest.prototype.flushHeaders = function () {}
ClientRequest.prototype.setTimeout = function () {}
ClientRequest.prototype.setNoDelay = function () {}
ClientRequest.prototype.setSocketKeepAlive = function () {}

// Taken from http://www.w3.org/TR/XMLHttpRequest/#the-setrequestheader%28%29-method
var unsafeHeaders = [
        'accept-charset',
        'accept-encoding',
        'access-control-request-headers',
        'access-control-request-method',
        'connection',
        'content-length',
        'cookie',
        'cookie2',
        'date',
        'dnt',
        'expect',
        'host',
        'keep-alive',
        'origin',
        'referer',
        'te',
        'trailer',
        'transfer-encoding',
        'upgrade',
        'via'
]

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer)
},{"./capability":156,"./response":158,"_process":112,"buffer":4,"inherits":106,"readable-stream":125,"to-arraybuffer":161}],158:[function(require,module,exports){
(function (process,global,Buffer){
var capability = require('./capability')
var inherits = require('inherits')
var stream = require('readable-stream')

var rStates = exports.readyStates = {
        UNSENT: 0,
        OPENED: 1,
        HEADERS_RECEIVED: 2,
        LOADING: 3,
        DONE: 4
}

var IncomingMessage = exports.IncomingMessage = function (xhr, response, mode, fetchTimer) {
        var self = this
        stream.Readable.call(self)

        self._mode = mode
        self.headers = {}
        self.rawHeaders = []
        self.trailers = {}
        self.rawTrailers = []

        // Fake the 'close' event, but only once 'end' fires
        self.on('end', function () {
                // The nextTick is necessary to prevent the 'request' module from causing an infinite loop
                process.nextTick(function () {
                        self.emit('close')
                })
        })

        if (mode === 'fetch') {
                self._fetchResponse = response

                self.url = response.url
                self.statusCode = response.status
                self.statusMessage = response.statusText
                
                response.headers.forEach(function (header, key){
                        self.headers[key.toLowerCase()] = header
                        self.rawHeaders.push(key, header)
                })

                if (capability.writableStream) {
                        var writable = new WritableStream({
                                write: function (chunk) {
                                        return new Promise(function (resolve, reject) {
                                                if (self._destroyed) {
                                                        reject()
                                                } else if(self.push(new Buffer(chunk))) {
                                                        resolve()
                                                } else {
                                                        self._resumeFetch = resolve
                                                }
                                        })
                                },
                                close: function () {
                                        global.clearTimeout(fetchTimer)
                                        if (!self._destroyed)
                                                self.push(null)
                                },
                                abort: function (err) {
                                        if (!self._destroyed)
                                                self.emit('error', err)
                                }
                        })

                        try {
                                response.body.pipeTo(writable).catch(function (err) {
                                        global.clearTimeout(fetchTimer)
                                        if (!self._destroyed)
                                                self.emit('error', err)
                                })
                                return
                        } catch (e) {} // pipeTo method isn't defined. Can't find a better way to feature test this
                }
                // fallback for when writableStream or pipeTo aren't available
                var reader = response.body.getReader()
                function read () {
                        reader.read().then(function (result) {
                                if (self._destroyed)
                                        return
                                if (result.done) {
                                        global.clearTimeout(fetchTimer)
                                        self.push(null)
                                        return
                                }
                                self.push(new Buffer(result.value))
                                read()
                        }).catch(function (err) {
                                global.clearTimeout(fetchTimer)
                                if (!self._destroyed)
                                        self.emit('error', err)
                        })
                }
                read()
        } else {
                self._xhr = xhr
                self._pos = 0

                self.url = xhr.responseURL
                self.statusCode = xhr.status
                self.statusMessage = xhr.statusText
                var headers = xhr.getAllResponseHeaders().split(/\r?\n/)
                headers.forEach(function (header) {
                        var matches = header.match(/^([^:]+):\s*(.*)/)
                        if (matches) {
                                var key = matches[1].toLowerCase()
                                if (key === 'set-cookie') {
                                        if (self.headers[key] === undefined) {
                                                self.headers[key] = []
                                        }
                                        self.headers[key].push(matches[2])
                                } else if (self.headers[key] !== undefined) {
                                        self.headers[key] += ', ' + matches[2]
                                } else {
                                        self.headers[key] = matches[2]
                                }
                                self.rawHeaders.push(matches[1], matches[2])
                        }
                })

                self._charset = 'x-user-defined'
                if (!capability.overrideMimeType) {
                        var mimeType = self.rawHeaders['mime-type']
                        if (mimeType) {
                                var charsetMatch = mimeType.match(/;\s*charset=([^;])(;|$)/)
                                if (charsetMatch) {
                                        self._charset = charsetMatch[1].toLowerCase()
                                }
                        }
                        if (!self._charset)
                                self._charset = 'utf-8' // best guess
                }
        }
}

inherits(IncomingMessage, stream.Readable)

IncomingMessage.prototype._read = function () {
        var self = this

        var resolve = self._resumeFetch
        if (resolve) {
                self._resumeFetch = null
                resolve()
        }
}

IncomingMessage.prototype._onXHRProgress = function () {
        var self = this

        var xhr = self._xhr

        var response = null
        switch (self._mode) {
                case 'text:vbarray': // For IE9
                        if (xhr.readyState !== rStates.DONE)
                                break
                        try {
                                // This fails in IE8
                                response = new global.VBArray(xhr.responseBody).toArray()
                        } catch (e) {}
                        if (response !== null) {
                                self.push(new Buffer(response))
                                break
                        }
                        // Falls through in IE8 
                case 'text':
                        try { // This will fail when readyState = 3 in IE9. Switch mode and wait for readyState = 4
                                response = xhr.responseText
                        } catch (e) {
                                self._mode = 'text:vbarray'
                                break
                        }
                        if (response.length > self._pos) {
                                var newData = response.substr(self._pos)
                                if (self._charset === 'x-user-defined') {
                                        var buffer = new Buffer(newData.length)
                                        for (var i = 0; i < newData.length; i++)
                                                buffer[i] = newData.charCodeAt(i) & 0xff

                                        self.push(buffer)
                                } else {
                                        self.push(newData, self._charset)
                                }
                                self._pos = response.length
                        }
                        break
                case 'arraybuffer':
                        if (xhr.readyState !== rStates.DONE || !xhr.response)
                                break
                        response = xhr.response
                        self.push(new Buffer(new Uint8Array(response)))
                        break
                case 'moz-chunked-arraybuffer': // take whole
                        response = xhr.response
                        if (xhr.readyState !== rStates.LOADING || !response)
                                break
                        self.push(new Buffer(new Uint8Array(response)))
                        break
                case 'ms-stream':
                        response = xhr.response
                        if (xhr.readyState !== rStates.LOADING)
                                break
                        var reader = new global.MSStreamReader()
                        reader.onprogress = function () {
                                if (reader.result.byteLength > self._pos) {
                                        self.push(new Buffer(new Uint8Array(reader.result.slice(self._pos))))
                                        self._pos = reader.result.byteLength
                                }
                        }
                        reader.onload = function () {
                                self.push(null)
                        }
                        // reader.onerror = ??? // TODO: this
                        reader.readAsArrayBuffer(response)
                        break
        }

        // The ms-stream case handles end separately in reader.onload()
        if (self._xhr.readyState === rStates.DONE && self._mode !== 'ms-stream') {
                self.push(null)
        }
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer)
},{"./capability":156,"_process":112,"buffer":4,"inherits":106,"readable-stream":125}],159:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

/*<replacement>*/

var Buffer = require('safe-buffer').Buffer;
/*</replacement>*/

var isEncoding = Buffer.isEncoding || function (encoding) {
  encoding = '' + encoding;
  switch (encoding && encoding.toLowerCase()) {
    case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw':
      return true;
    default:
      return false;
  }
};

function _normalizeEncoding(enc) {
  if (!enc) return 'utf8';
  var retried;
  while (true) {
    switch (enc) {
      case 'utf8':
      case 'utf-8':
        return 'utf8';
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return 'utf16le';
      case 'latin1':
      case 'binary':
        return 'latin1';
      case 'base64':
      case 'ascii':
      case 'hex':
        return enc;
      default:
        if (retried) return; // undefined
        enc = ('' + enc).toLowerCase();
        retried = true;
    }
  }
};

// Do not cache `Buffer.isEncoding` when checking encoding names as some
// modules monkey-patch it to support additional encodings
function normalizeEncoding(enc) {
  var nenc = _normalizeEncoding(enc);
  if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);
  return nenc || enc;
}

// StringDecoder provides an interface for efficiently splitting a series of
// buffers into a series of JS strings without breaking apart multi-byte
// characters.
exports.StringDecoder = StringDecoder;
function StringDecoder(encoding) {
  this.encoding = normalizeEncoding(encoding);
  var nb;
  switch (this.encoding) {
    case 'utf16le':
      this.text = utf16Text;
      this.end = utf16End;
      nb = 4;
      break;
    case 'utf8':
      this.fillLast = utf8FillLast;
      nb = 4;
      break;
    case 'base64':
      this.text = base64Text;
      this.end = base64End;
      nb = 3;
      break;
    default:
      this.write = simpleWrite;
      this.end = simpleEnd;
      return;
  }
  this.lastNeed = 0;
  this.lastTotal = 0;
  this.lastChar = Buffer.allocUnsafe(nb);
}

StringDecoder.prototype.write = function (buf) {
  if (buf.length === 0) return '';
  var r;
  var i;
  if (this.lastNeed) {
    r = this.fillLast(buf);
    if (r === undefined) return '';
    i = this.lastNeed;
    this.lastNeed = 0;
  } else {
    i = 0;
  }
  if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);
  return r || '';
};

StringDecoder.prototype.end = utf8End;

// Returns only complete characters in a Buffer
StringDecoder.prototype.text = utf8Text;

// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer
StringDecoder.prototype.fillLast = function (buf) {
  if (this.lastNeed <= buf.length) {
    buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);
    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
  }
  buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);
  this.lastNeed -= buf.length;
};

// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a
// continuation byte. If an invalid byte is detected, -2 is returned.
function utf8CheckByte(byte) {
  if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;
  return byte >> 6 === 0x02 ? -1 : -2;
}

// Checks at most 3 bytes at the end of a Buffer in order to detect an
// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)
// needed to complete the UTF-8 character (if applicable) are returned.
function utf8CheckIncomplete(self, buf, i) {
  var j = buf.length - 1;
  if (j < i) return 0;
  var nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) self.lastNeed = nb - 1;
    return nb;
  }
  if (--j < i || nb === -2) return 0;
  nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) self.lastNeed = nb - 2;
    return nb;
  }
  if (--j < i || nb === -2) return 0;
  nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) {
      if (nb === 2) nb = 0;else self.lastNeed = nb - 3;
    }
    return nb;
  }
  return 0;
}

// Validates as many continuation bytes for a multi-byte UTF-8 character as
// needed or are available. If we see a non-continuation byte where we expect
// one, we "replace" the validated continuation bytes we've seen so far with
// a single UTF-8 replacement character ('\ufffd'), to match v8's UTF-8 decoding
// behavior. The continuation byte check is included three times in the case
// where all of the continuation bytes for a character exist in the same buffer.
// It is also done this way as a slight performance increase instead of using a
// loop.
function utf8CheckExtraBytes(self, buf, p) {
  if ((buf[0] & 0xC0) !== 0x80) {
    self.lastNeed = 0;
    return '\ufffd';
  }
  if (self.lastNeed > 1 && buf.length > 1) {
    if ((buf[1] & 0xC0) !== 0x80) {
      self.lastNeed = 1;
      return '\ufffd';
    }
    if (self.lastNeed > 2 && buf.length > 2) {
      if ((buf[2] & 0xC0) !== 0x80) {
        self.lastNeed = 2;
        return '\ufffd';
      }
    }
  }
}

// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.
function utf8FillLast(buf) {
  var p = this.lastTotal - this.lastNeed;
  var r = utf8CheckExtraBytes(this, buf, p);
  if (r !== undefined) return r;
  if (this.lastNeed <= buf.length) {
    buf.copy(this.lastChar, p, 0, this.lastNeed);
    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
  }
  buf.copy(this.lastChar, p, 0, buf.length);
  this.lastNeed -= buf.length;
}

// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a
// partial character, the character's bytes are buffered until the required
// number of bytes are available.
function utf8Text(buf, i) {
  var total = utf8CheckIncomplete(this, buf, i);
  if (!this.lastNeed) return buf.toString('utf8', i);
  this.lastTotal = total;
  var end = buf.length - (total - this.lastNeed);
  buf.copy(this.lastChar, 0, end);
  return buf.toString('utf8', i, end);
}

// For UTF-8, a replacement character is added when ending on a partial
// character.
function utf8End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) return r + '\ufffd';
  return r;
}

// UTF-16LE typically needs two bytes per character, but even if we have an even
// number of bytes available, we need to check if we end on a leading/high
// surrogate. In that case, we need to wait for the next two bytes in order to
// decode the last character properly.
function utf16Text(buf, i) {
  if ((buf.length - i) % 2 === 0) {
    var r = buf.toString('utf16le', i);
    if (r) {
      var c = r.charCodeAt(r.length - 1);
      if (c >= 0xD800 && c <= 0xDBFF) {
        this.lastNeed = 2;
        this.lastTotal = 4;
        this.lastChar[0] = buf[buf.length - 2];
        this.lastChar[1] = buf[buf.length - 1];
        return r.slice(0, -1);
      }
    }
    return r;
  }
  this.lastNeed = 1;
  this.lastTotal = 2;
  this.lastChar[0] = buf[buf.length - 1];
  return buf.toString('utf16le', i, buf.length - 1);
}

// For UTF-16LE we do not explicitly append special replacement characters if we
// end on a partial character, we simply let v8 handle that.
function utf16End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) {
    var end = this.lastTotal - this.lastNeed;
    return r + this.lastChar.toString('utf16le', 0, end);
  }
  return r;
}

function base64Text(buf, i) {
  var n = (buf.length - i) % 3;
  if (n === 0) return buf.toString('base64', i);
  this.lastNeed = 3 - n;
  this.lastTotal = 3;
  if (n === 1) {
    this.lastChar[0] = buf[buf.length - 1];
  } else {
    this.lastChar[0] = buf[buf.length - 2];
    this.lastChar[1] = buf[buf.length - 1];
  }
  return buf.toString('base64', i, buf.length - n);
}

function base64End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);
  return r;
}

// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)
function simpleWrite(buf) {
  return buf.toString(this.encoding);
}

function simpleEnd(buf) {
  return buf && buf.length ? this.write(buf) : '';
}
},{"safe-buffer":143}],160:[function(require,module,exports){
(function (setImmediate,clearImmediate){
var nextTick = require('process/browser.js').nextTick;
var apply = Function.prototype.apply;
var slice = Array.prototype.slice;
var immediateIds = {};
var nextImmediateId = 0;

// DOM APIs, for completeness

exports.setTimeout = function() {
  return new Timeout(apply.call(setTimeout, window, arguments), clearTimeout);
};
exports.setInterval = function() {
  return new Timeout(apply.call(setInterval, window, arguments), clearInterval);
};
exports.clearTimeout =
exports.clearInterval = function(timeout) { timeout.close(); };

function Timeout(id, clearFn) {
  this._id = id;
  this._clearFn = clearFn;
}
Timeout.prototype.unref = Timeout.prototype.ref = function() {};
Timeout.prototype.close = function() {
  this._clearFn.call(window, this._id);
};

// Does not start the time, just sets up the members needed.
exports.enroll = function(item, msecs) {
  clearTimeout(item._idleTimeoutId);
  item._idleTimeout = msecs;
};

exports.unenroll = function(item) {
  clearTimeout(item._idleTimeoutId);
  item._idleTimeout = -1;
};

exports._unrefActive = exports.active = function(item) {
  clearTimeout(item._idleTimeoutId);

  var msecs = item._idleTimeout;
  if (msecs >= 0) {
    item._idleTimeoutId = setTimeout(function onTimeout() {
      if (item._onTimeout)
        item._onTimeout();
    }, msecs);
  }
};

// That's not how node.js implements it but the exposed api is the same.
exports.setImmediate = typeof setImmediate === "function" ? setImmediate : function(fn) {
  var id = nextImmediateId++;
  var args = arguments.length < 2 ? false : slice.call(arguments, 1);

  immediateIds[id] = true;

  nextTick(function onNextTick() {
    if (immediateIds[id]) {
      // fn.call() is faster so we optimize for the common use-case
      // @see http://jsperf.com/call-apply-segu
      if (args) {
        fn.apply(null, args);
      } else {
        fn.call(null);
      }
      // Prevent ids from leaking
      exports.clearImmediate(id);
    }
  });

  return id;
};

exports.clearImmediate = typeof clearImmediate === "function" ? clearImmediate : function(id) {
  delete immediateIds[id];
};
}).call(this,require("timers").setImmediate,require("timers").clearImmediate)
},{"process/browser.js":112,"timers":160}],161:[function(require,module,exports){
var Buffer = require('buffer').Buffer

module.exports = function (buf) {
        // If the buffer is backed by a Uint8Array, a faster version will work
        if (buf instanceof Uint8Array) {
                // If the buffer isn't a subarray, return the underlying ArrayBuffer
                if (buf.byteOffset === 0 && buf.byteLength === buf.buffer.byteLength) {
                        return buf.buffer
                } else if (typeof buf.buffer.slice === 'function') {
                        // Otherwise we need to get a proper copy
                        return buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength)
                }
        }

        if (Buffer.isBuffer(buf)) {
                // This is the slow version that will work with any Buffer
                // implementation (even in old browsers)
                var arrayCopy = new Uint8Array(buf.length)
                var len = buf.length
                for (var i = 0; i < len; i++) {
                        arrayCopy[i] = buf[i]
                }
                return arrayCopy.buffer
        } else {
                throw new Error('Argument must be a Buffer')
        }
}

},{"buffer":4}],162:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

var punycode = require('punycode');
var util = require('./util');

exports.parse = urlParse;
exports.resolve = urlResolve;
exports.resolveObject = urlResolveObject;
exports.format = urlFormat;

exports.Url = Url;

function Url() {
  this.protocol = null;
  this.slashes = null;
  this.auth = null;
  this.host = null;
  this.port = null;
  this.hostname = null;
  this.hash = null;
  this.search = null;
  this.query = null;
  this.pathname = null;
  this.path = null;
  this.href = null;
}

// Reference: RFC 3986, RFC 1808, RFC 2396

// define these here so at least they only have to be
// compiled once on the first module load.
var protocolPattern = /^([a-z0-9.+-]+:)/i,
    portPattern = /:[0-9]*$/,

    // Special case for a simple path URL
    simplePathPattern = /^(\/\/?(?!\/)[^\?\s]*)(\?[^\s]*)?$/,

    // RFC 2396: characters reserved for delimiting URLs.
    // We actually just auto-escape these.
    delims = ['<', '>', '"', '`', ' ', '\r', '\n', '\t'],

    // RFC 2396: characters not allowed for various reasons.
    unwise = ['{', '}', '|', '\\', '^', '`'].concat(delims),

    // Allowed by RFCs, but cause of XSS attacks.  Always escape these.
    autoEscape = ['\''].concat(unwise),
    // Characters that are never ever allowed in a hostname.
    // Note that any invalid chars are also handled, but these
    // are the ones that are *expected* to be seen, so we fast-path
    // them.
    nonHostChars = ['%', '/', '?', ';', '#'].concat(autoEscape),
    hostEndingChars = ['/', '?', '#'],
    hostnameMaxLen = 255,
    hostnamePartPattern = /^[+a-z0-9A-Z_-]{0,63}$/,
    hostnamePartStart = /^([+a-z0-9A-Z_-]{0,63})(.*)$/,
    // protocols that can allow "unsafe" and "unwise" chars.
    unsafeProtocol = {
      'javascript': true,
      'javascript:': true
    },
    // protocols that never have a hostname.
    hostlessProtocol = {
      'javascript': true,
      'javascript:': true
    },
    // protocols that always contain a // bit.
    slashedProtocol = {
      'http': true,
      'https': true,
      'ftp': true,
      'gopher': true,
      'file': true,
      'http:': true,
      'https:': true,
      'ftp:': true,
      'gopher:': true,
      'file:': true
    },
    querystring = require('querystring');

function urlParse(url, parseQueryString, slashesDenoteHost) {
  if (url && util.isObject(url) && url instanceof Url) return url;

  var u = new Url;
  u.parse(url, parseQueryString, slashesDenoteHost);
  return u;
}

Url.prototype.parse = function(url, parseQueryString, slashesDenoteHost) {
  if (!util.isString(url)) {
    throw new TypeError("Parameter 'url' must be a string, not " + typeof url);
  }

  // Copy chrome, IE, opera backslash-handling behavior.
  // Back slashes before the query string get converted to forward slashes
  // See: https://code.google.com/p/chromium/issues/detail?id=25916
  var queryIndex = url.indexOf('?'),
      splitter =
          (queryIndex !== -1 && queryIndex < url.indexOf('#')) ? '?' : '#',
      uSplit = url.split(splitter),
      slashRegex = /\\/g;
  uSplit[0] = uSplit[0].replace(slashRegex, '/');
  url = uSplit.join(splitter);

  var rest = url;

  // trim before proceeding.
  // This is to support parse stuff like "  http://foo.com  \n"
  rest = rest.trim();

  if (!slashesDenoteHost && url.split('#').length === 1) {
    // Try fast path regexp
    var simplePath = simplePathPattern.exec(rest);
    if (simplePath) {
      this.path = rest;
      this.href = rest;
      this.pathname = simplePath[1];
      if (simplePath[2]) {
        this.search = simplePath[2];
        if (parseQueryString) {
          this.query = querystring.parse(this.search.substr(1));
        } else {
          this.query = this.search.substr(1);
        }
      } else if (parseQueryString) {
        this.search = '';
        this.query = {};
      }
      return this;
    }
  }

  var proto = protocolPattern.exec(rest);
  if (proto) {
    proto = proto[0];
    var lowerProto = proto.toLowerCase();
    this.protocol = lowerProto;
    rest = rest.substr(proto.length);
  }

  // figure out if it's got a host
  // user@server is *always* interpreted as a hostname, and url
  // resolution will treat //foo/bar as host=foo,path=bar because that's
  // how the browser resolves relative URLs.
  if (slashesDenoteHost || proto || rest.match(/^\/\/[^@\/]+@[^@\/]+/)) {
    var slashes = rest.substr(0, 2) === '//';
    if (slashes && !(proto && hostlessProtocol[proto])) {
      rest = rest.substr(2);
      this.slashes = true;
    }
  }

  if (!hostlessProtocol[proto] &&
      (slashes || (proto && !slashedProtocol[proto]))) {

    // there's a hostname.
    // the first instance of /, ?, ;, or # ends the host.
    //
    // If there is an @ in the hostname, then non-host chars *are* allowed
    // to the left of the last @ sign, unless some host-ending character
    // comes *before* the @-sign.
    // URLs are obnoxious.
    //
    // ex:
    // http://a@b@c/ => user:a@b host:c
    // http://a@b?@c => user:a host:c path:/?@c

    // v0.12 TODO(isaacs): This is not quite how Chrome does things.
    // Review our test case against browsers more comprehensively.

    // find the first instance of any hostEndingChars
    var hostEnd = -1;
    for (var i = 0; i < hostEndingChars.length; i++) {
      var hec = rest.indexOf(hostEndingChars[i]);
      if (hec !== -1 && (hostEnd === -1 || hec < hostEnd))
        hostEnd = hec;
    }

    // at this point, either we have an explicit point where the
    // auth portion cannot go past, or the last @ char is the decider.
    var auth, atSign;
    if (hostEnd === -1) {
      // atSign can be anywhere.
      atSign = rest.lastIndexOf('@');
    } else {
      // atSign must be in auth portion.
      // http://a@b/c@d => host:b auth:a path:/c@d
      atSign = rest.lastIndexOf('@', hostEnd);
    }

    // Now we have a portion which is definitely the auth.
    // Pull that off.
    if (atSign !== -1) {
      auth = rest.slice(0, atSign);
      rest = rest.slice(atSign + 1);
      this.auth = decodeURIComponent(auth);
    }

    // the host is the remaining to the left of the first non-host char
    hostEnd = -1;
    for (var i = 0; i < nonHostChars.length; i++) {
      var hec = rest.indexOf(nonHostChars[i]);
      if (hec !== -1 && (hostEnd === -1 || hec < hostEnd))
        hostEnd = hec;
    }
    // if we still have not hit it, then the entire thing is a host.
    if (hostEnd === -1)
      hostEnd = rest.length;

    this.host = rest.slice(0, hostEnd);
    rest = rest.slice(hostEnd);

    // pull out port.
    this.parseHost();

    // we've indicated that there is a hostname,
    // so even if it's empty, it has to be present.
    this.hostname = this.hostname || '';

    // if hostname begins with [ and ends with ]
    // assume that it's an IPv6 address.
    var ipv6Hostname = this.hostname[0] === '[' &&
        this.hostname[this.hostname.length - 1] === ']';

    // validate a little.
    if (!ipv6Hostname) {
      var hostparts = this.hostname.split(/\./);
      for (var i = 0, l = hostparts.length; i < l; i++) {
        var part = hostparts[i];
        if (!part) continue;
        if (!part.match(hostnamePartPattern)) {
          var newpart = '';
          for (var j = 0, k = part.length; j < k; j++) {
            if (part.charCodeAt(j) > 127) {
              // we replace non-ASCII char with a temporary placeholder
              // we need this to make sure size of hostname is not
              // broken by replacing non-ASCII by nothing
              newpart += 'x';
            } else {
              newpart += part[j];
            }
          }
          // we test again with ASCII char only
          if (!newpart.match(hostnamePartPattern)) {
            var validParts = hostparts.slice(0, i);
            var notHost = hostparts.slice(i + 1);
            var bit = part.match(hostnamePartStart);
            if (bit) {
              validParts.push(bit[1]);
              notHost.unshift(bit[2]);
            }
            if (notHost.length) {
              rest = '/' + notHost.join('.') + rest;
            }
            this.hostname = validParts.join('.');
            break;
          }
        }
      }
    }

    if (this.hostname.length > hostnameMaxLen) {
      this.hostname = '';
    } else {
      // hostnames are always lower case.
      this.hostname = this.hostname.toLowerCase();
    }

    if (!ipv6Hostname) {
      // IDNA Support: Returns a punycoded representation of "domain".
      // It only converts parts of the domain name that
      // have non-ASCII characters, i.e. it doesn't matter if
      // you call it with a domain that already is ASCII-only.
      this.hostname = punycode.toASCII(this.hostname);
    }

    var p = this.port ? ':' + this.port : '';
    var h = this.hostname || '';
    this.host = h + p;
    this.href += this.host;

    // strip [ and ] from the hostname
    // the host field still retains them, though
    if (ipv6Hostname) {
      this.hostname = this.hostname.substr(1, this.hostname.length - 2);
      if (rest[0] !== '/') {
        rest = '/' + rest;
      }
    }
  }

  // now rest is set to the post-host stuff.
  // chop off any delim chars.
  if (!unsafeProtocol[lowerProto]) {

    // First, make 100% sure that any "autoEscape" chars get
    // escaped, even if encodeURIComponent doesn't think they
    // need to be.
    for (var i = 0, l = autoEscape.length; i < l; i++) {
      var ae = autoEscape[i];
      if (rest.indexOf(ae) === -1)
        continue;
      var esc = encodeURIComponent(ae);
      if (esc === ae) {
        esc = escape(ae);
      }
      rest = rest.split(ae).join(esc);
    }
  }


  // chop off from the tail first.
  var hash = rest.indexOf('#');
  if (hash !== -1) {
    // got a fragment string.
    this.hash = rest.substr(hash);
    rest = rest.slice(0, hash);
  }
  var qm = rest.indexOf('?');
  if (qm !== -1) {
    this.search = rest.substr(qm);
    this.query = rest.substr(qm + 1);
    if (parseQueryString) {
      this.query = querystring.parse(this.query);
    }
    rest = rest.slice(0, qm);
  } else if (parseQueryString) {
    // no query string, but parseQueryString still requested
    this.search = '';
    this.query = {};
  }
  if (rest) this.pathname = rest;
  if (slashedProtocol[lowerProto] &&
      this.hostname && !this.pathname) {
    this.pathname = '/';
  }

  //to support http.request
  if (this.pathname || this.search) {
    var p = this.pathname || '';
    var s = this.search || '';
    this.path = p + s;
  }

  // finally, reconstruct the href based on what has been validated.
  this.href = this.format();
  return this;
};

// format a parsed object into a url string
function urlFormat(obj) {
  // ensure it's an object, and not a string url.
  // If it's an obj, this is a no-op.
  // this way, you can call url_format() on strings
  // to clean up potentially wonky urls.
  if (util.isString(obj)) obj = urlParse(obj);
  if (!(obj instanceof Url)) return Url.prototype.format.call(obj);
  return obj.format();
}

Url.prototype.format = function() {
  var auth = this.auth || '';
  if (auth) {
    auth = encodeURIComponent(auth);
    auth = auth.replace(/%3A/i, ':');
    auth += '@';
  }

  var protocol = this.protocol || '',
      pathname = this.pathname || '',
      hash = this.hash || '',
      host = false,
      query = '';

  if (this.host) {
    host = auth + this.host;
  } else if (this.hostname) {
    host = auth + (this.hostname.indexOf(':') === -1 ?
        this.hostname :
        '[' + this.hostname + ']');
    if (this.port) {
      host += ':' + this.port;
    }
  }

  if (this.query &&
      util.isObject(this.query) &&
      Object.keys(this.query).length) {
    query = querystring.stringify(this.query);
  }

  var search = this.search || (query && ('?' + query)) || '';

  if (protocol && protocol.substr(-1) !== ':') protocol += ':';

  // only the slashedProtocols get the //.  Not mailto:, xmpp:, etc.
  // unless they had them to begin with.
  if (this.slashes ||
      (!protocol || slashedProtocol[protocol]) && host !== false) {
    host = '//' + (host || '');
    if (pathname && pathname.charAt(0) !== '/') pathname = '/' + pathname;
  } else if (!host) {
    host = '';
  }

  if (hash && hash.charAt(0) !== '#') hash = '#' + hash;
  if (search && search.charAt(0) !== '?') search = '?' + search;

  pathname = pathname.replace(/[?#]/g, function(match) {
    return encodeURIComponent(match);
  });
  search = search.replace('#', '%23');

  return protocol + host + pathname + search + hash;
};

function urlResolve(source, relative) {
  return urlParse(source, false, true).resolve(relative);
}

Url.prototype.resolve = function(relative) {
  return this.resolveObject(urlParse(relative, false, true)).format();
};

function urlResolveObject(source, relative) {
  if (!source) return relative;
  return urlParse(source, false, true).resolveObject(relative);
}

Url.prototype.resolveObject = function(relative) {
  if (util.isString(relative)) {
    var rel = new Url();
    rel.parse(relative, false, true);
    relative = rel;
  }

  var result = new Url();
  var tkeys = Object.keys(this);
  for (var tk = 0; tk < tkeys.length; tk++) {
    var tkey = tkeys[tk];
    result[tkey] = this[tkey];
  }

  // hash is always overridden, no matter what.
  // even href="" will remove it.
  result.hash = relative.hash;

  // if the relative url is empty, then there's nothing left to do here.
  if (relative.href === '') {
    result.href = result.format();
    return result;
  }

  // hrefs like //foo/bar always cut to the protocol.
  if (relative.slashes && !relative.protocol) {
    // take everything except the protocol from relative
    var rkeys = Object.keys(relative);
    for (var rk = 0; rk < rkeys.length; rk++) {
      var rkey = rkeys[rk];
      if (rkey !== 'protocol')
        result[rkey] = relative[rkey];
    }

    //urlParse appends trailing / to urls like http://www.example.com
    if (slashedProtocol[result.protocol] &&
        result.hostname && !result.pathname) {
      result.path = result.pathname = '/';
    }

    result.href = result.format();
    return result;
  }

  if (relative.protocol && relative.protocol !== result.protocol) {
    // if it's a known url protocol, then changing
    // the protocol does weird things
    // first, if it's not file:, then we MUST have a host,
    // and if there was a path
    // to begin with, then we MUST have a path.
    // if it is file:, then the host is dropped,
    // because that's known to be hostless.
    // anything else is assumed to be absolute.
    if (!slashedProtocol[relative.protocol]) {
      var keys = Object.keys(relative);
      for (var v = 0; v < keys.length; v++) {
        var k = keys[v];
        result[k] = relative[k];
      }
      result.href = result.format();
      return result;
    }

    result.protocol = relative.protocol;
    if (!relative.host && !hostlessProtocol[relative.protocol]) {
      var relPath = (relative.pathname || '').split('/');
      while (relPath.length && !(relative.host = relPath.shift()));
      if (!relative.host) relative.host = '';
      if (!relative.hostname) relative.hostname = '';
      if (relPath[0] !== '') relPath.unshift('');
      if (relPath.length < 2) relPath.unshift('');
      result.pathname = relPath.join('/');
    } else {
      result.pathname = relative.pathname;
    }
    result.search = relative.search;
    result.query = relative.query;
    result.host = relative.host || '';
    result.auth = relative.auth;
    result.hostname = relative.hostname || relative.host;
    result.port = relative.port;
    // to support http.request
    if (result.pathname || result.search) {
      var p = result.pathname || '';
      var s = result.search || '';
      result.path = p + s;
    }
    result.slashes = result.slashes || relative.slashes;
    result.href = result.format();
    return result;
  }

  var isSourceAbs = (result.pathname && result.pathname.charAt(0) === '/'),
      isRelAbs = (
          relative.host ||
          relative.pathname && relative.pathname.charAt(0) === '/'
      ),
      mustEndAbs = (isRelAbs || isSourceAbs ||
                    (result.host && relative.pathname)),
      removeAllDots = mustEndAbs,
      srcPath = result.pathname && result.pathname.split('/') || [],
      relPath = relative.pathname && relative.pathname.split('/') || [],
      psychotic = result.protocol && !slashedProtocol[result.protocol];

  // if the url is a non-slashed url, then relative
  // links like ../.. should be able
  // to crawl up to the hostname, as well.  This is strange.
  // result.protocol has already been set by now.
  // Later on, put the first path part into the host field.
  if (psychotic) {
    result.hostname = '';
    result.port = null;
    if (result.host) {
      if (srcPath[0] === '') srcPath[0] = result.host;
      else srcPath.unshift(result.host);
    }
    result.host = '';
    if (relative.protocol) {
      relative.hostname = null;
      relative.port = null;
      if (relative.host) {
        if (relPath[0] === '') relPath[0] = relative.host;
        else relPath.unshift(relative.host);
      }
      relative.host = null;
    }
    mustEndAbs = mustEndAbs && (relPath[0] === '' || srcPath[0] === '');
  }

  if (isRelAbs) {
    // it's absolute.
    result.host = (relative.host || relative.host === '') ?
                  relative.host : result.host;
    result.hostname = (relative.hostname || relative.hostname === '') ?
                      relative.hostname : result.hostname;
    result.search = relative.search;
    result.query = relative.query;
    srcPath = relPath;
    // fall through to the dot-handling below.
  } else if (relPath.length) {
    // it's relative
    // throw away the existing file, and take the new path instead.
    if (!srcPath) srcPath = [];
    srcPath.pop();
    srcPath = srcPath.concat(relPath);
    result.search = relative.search;
    result.query = relative.query;
  } else if (!util.isNullOrUndefined(relative.search)) {
    // just pull out the search.
    // like href='?foo'.
    // Put this after the other two cases because it simplifies the booleans
    if (psychotic) {
      result.hostname = result.host = srcPath.shift();
      //occationaly the auth can get stuck only in host
      //this especially happens in cases like
      //url.resolveObject('mailto:local1@domain1', 'local2@domain2')
      var authInHost = result.host && result.host.indexOf('@') > 0 ?
                       result.host.split('@') : false;
      if (authInHost) {
        result.auth = authInHost.shift();
        result.host = result.hostname = authInHost.shift();
      }
    }
    result.search = relative.search;
    result.query = relative.query;
    //to support http.request
    if (!util.isNull(result.pathname) || !util.isNull(result.search)) {
      result.path = (result.pathname ? result.pathname : '') +
                    (result.search ? result.search : '');
    }
    result.href = result.format();
    return result;
  }

  if (!srcPath.length) {
    // no path at all.  easy.
    // we've already handled the other stuff above.
    result.pathname = null;
    //to support http.request
    if (result.search) {
      result.path = '/' + result.search;
    } else {
      result.path = null;
    }
    result.href = result.format();
    return result;
  }

  // if a url ENDs in . or .., then it must get a trailing slash.
  // however, if it ends in anything else non-slashy,
  // then it must NOT get a trailing slash.
  var last = srcPath.slice(-1)[0];
  var hasTrailingSlash = (
      (result.host || relative.host || srcPath.length > 1) &&
      (last === '.' || last === '..') || last === '');

  // strip single dots, resolve double dots to parent dir
  // if the path tries to go above the root, `up` ends up > 0
  var up = 0;
  for (var i = srcPath.length; i >= 0; i--) {
    last = srcPath[i];
    if (last === '.') {
      srcPath.splice(i, 1);
    } else if (last === '..') {
      srcPath.splice(i, 1);
      up++;
    } else if (up) {
      srcPath.splice(i, 1);
      up--;
    }
  }

  // if the path is allowed to go above the root, restore leading ..s
  if (!mustEndAbs && !removeAllDots) {
    for (; up--; up) {
      srcPath.unshift('..');
    }
  }

  if (mustEndAbs && srcPath[0] !== '' &&
      (!srcPath[0] || srcPath[0].charAt(0) !== '/')) {
    srcPath.unshift('');
  }

  if (hasTrailingSlash && (srcPath.join('/').substr(-1) !== '/')) {
    srcPath.push('');
  }

  var isAbsolute = srcPath[0] === '' ||
      (srcPath[0] && srcPath[0].charAt(0) === '/');

  // put the host back
  if (psychotic) {
    result.hostname = result.host = isAbsolute ? '' :
                                    srcPath.length ? srcPath.shift() : '';
    //occationaly the auth can get stuck only in host
    //this especially happens in cases like
    //url.resolveObject('mailto:local1@domain1', 'local2@domain2')
    var authInHost = result.host && result.host.indexOf('@') > 0 ?
                     result.host.split('@') : false;
    if (authInHost) {
      result.auth = authInHost.shift();
      result.host = result.hostname = authInHost.shift();
    }
  }

  mustEndAbs = mustEndAbs || (result.host && srcPath.length);

  if (mustEndAbs && !isAbsolute) {
    srcPath.unshift('');
  }

  if (!srcPath.length) {
    result.pathname = null;
    result.path = null;
  } else {
    result.pathname = srcPath.join('/');
  }

  //to support request.http
  if (!util.isNull(result.pathname) || !util.isNull(result.search)) {
    result.path = (result.pathname ? result.pathname : '') +
                  (result.search ? result.search : '');
  }
  result.auth = relative.auth || result.auth;
  result.slashes = result.slashes || relative.slashes;
  result.href = result.format();
  return result;
};

Url.prototype.parseHost = function() {
  var host = this.host;
  var port = portPattern.exec(host);
  if (port) {
    port = port[0];
    if (port !== ':') {
      this.port = port.substr(1);
    }
    host = host.substr(0, host.length - port.length);
  }
  if (host) this.hostname = host;
};

},{"./util":163,"punycode":113,"querystring":116}],163:[function(require,module,exports){
'use strict';

module.exports = {
  isString: function(arg) {
    return typeof(arg) === 'string';
  },
  isObject: function(arg) {
    return typeof(arg) === 'object' && arg !== null;
  },
  isNull: function(arg) {
    return arg === null;
  },
  isNullOrUndefined: function(arg) {
    return arg == null;
  }
};

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

/**
 * Module exports.
 */

module.exports = deprecate;

/**
 * Mark that a method should not be used.
 * Returns a modified function which warns once by default.
 *
 * If `localStorage.noDeprecation = true` is set, then it is a no-op.
 *
 * If `localStorage.throwDeprecation = true` is set, then deprecated functions
 * will throw an Error when invoked.
 *
 * If `localStorage.traceDeprecation = true` is set, then deprecated functions
 * will invoke `console.trace()` instead of `console.error()`.
 *
 * @param {Function} fn - the function to deprecate
 * @param {String} msg - the string to print to the console when `fn` is invoked
 * @returns {Function} a new "deprecated" version of `fn`
 * @api public
 */

function deprecate (fn, msg) {
  if (config('noDeprecation')) {
    return fn;
  }

  var warned = false;
  function deprecated() {
    if (!warned) {
      if (config('throwDeprecation')) {
        throw new Error(msg);
      } else if (config('traceDeprecation')) {
        console.trace(msg);
      } else {
        console.warn(msg);
      }
      warned = true;
    }
    return fn.apply(this, arguments);
  }

  return deprecated;
}

/**
 * Checks `localStorage` for boolean values for the given `name`.
 *
 * @param {String} name
 * @returns {Boolean}
 * @api private
 */

function config (name) {
  // accessing global.localStorage can trigger a DOMException in sandboxed iframes
  try {
    if (!global.localStorage) return false;
  } catch (_) {
    return false;
  }
  var val = global.localStorage[name];
  if (null == val) return false;
  return String(val).toLowerCase() === 'true';
}

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],165:[function(require,module,exports){
module.exports = extend

var hasOwnProperty = Object.prototype.hasOwnProperty;

function extend() {
    var target = {}

    for (var i = 0; i < arguments.length; i++) {
        var source = arguments[i]

        for (var key in source) {
            if (hasOwnProperty.call(source, key)) {
                target[key] = source[key]
            }
        }
    }

    return target
}

},{}],166:[function(require,module,exports){
/*!
 * HTML Parser By John Resig (ejohn.org)
 * Modified by Juriy "kangax" Zaytsev
 * Original code by Erik Arvidsson, Mozilla Public License
 * http://erik.eae.net/simplehtmlparser/simplehtmlparser.js
 */

/*
 * // Use like so:
 * HTMLParser(htmlString, {
 *     start: function(tag, attrs, unary) {},
 *     end: function(tag) {},
 *     chars: function(text) {},
 *     comment: function(text) {}
 * });
 *
 * // or to get an XML string:
 * HTMLtoXML(htmlString);
 *
 * // or to get an XML DOM Document
 * HTMLtoDOM(htmlString);
 *
 * // or to inject into an existing document/DOM node
 * HTMLtoDOM(htmlString, document);
 * HTMLtoDOM(htmlString, document.body);
 *
 */

/* global ActiveXObject, DOMDocument */

'use strict';

var createMapFromString = require('./utils').createMapFromString;

function makeMap(values) {
  return createMapFromString(values, true);
}

// Regular Expressions for parsing tags and attributes
var singleAttrIdentifier = /([^\s"'<>/=]+)/,
    singleAttrAssigns = [/=/],
    singleAttrValues = [
      // attr value double quotes
      /"([^"]*)"+/.source,
      // attr value, single quotes
      /'([^']*)'+/.source,
      // attr value, no quotes
      /([^ \t\n\f\r"'`=<>]+)/.source
    ],
    // https://www.w3.org/TR/1999/REC-xml-names-19990114/#NT-QName
    qnameCapture = (function() {
      // based on https://www.npmjs.com/package/ncname
      var combiningChar = '\\u0300-\\u0345\\u0360\\u0361\\u0483-\\u0486\\u0591-\\u05A1\\u05A3-\\u05B9\\u05BB-\\u05BD\\u05BF\\u05C1\\u05C2\\u05C4\\u064B-\\u0652\\u0670\\u06D6-\\u06E4\\u06E7\\u06E8\\u06EA-\\u06ED\\u0901-\\u0903\\u093C\\u093E-\\u094D\\u0951-\\u0954\\u0962\\u0963\\u0981-\\u0983\\u09BC\\u09BE-\\u09C4\\u09C7\\u09C8\\u09CB-\\u09CD\\u09D7\\u09E2\\u09E3\\u0A02\\u0A3C\\u0A3E-\\u0A42\\u0A47\\u0A48\\u0A4B-\\u0A4D\\u0A70\\u0A71\\u0A81-\\u0A83\\u0ABC\\u0ABE-\\u0AC5\\u0AC7-\\u0AC9\\u0ACB-\\u0ACD\\u0B01-\\u0B03\\u0B3C\\u0B3E-\\u0B43\\u0B47\\u0B48\\u0B4B-\\u0B4D\\u0B56\\u0B57\\u0B82\\u0B83\\u0BBE-\\u0BC2\\u0BC6-\\u0BC8\\u0BCA-\\u0BCD\\u0BD7\\u0C01-\\u0C03\\u0C3E-\\u0C44\\u0C46-\\u0C48\\u0C4A-\\u0C4D\\u0C55\\u0C56\\u0C82\\u0C83\\u0CBE-\\u0CC4\\u0CC6-\\u0CC8\\u0CCA-\\u0CCD\\u0CD5\\u0CD6\\u0D02\\u0D03\\u0D3E-\\u0D43\\u0D46-\\u0D48\\u0D4A-\\u0D4D\\u0D57\\u0E31\\u0E34-\\u0E3A\\u0E47-\\u0E4E\\u0EB1\\u0EB4-\\u0EB9\\u0EBB\\u0EBC\\u0EC8-\\u0ECD\\u0F18\\u0F19\\u0F35\\u0F37\\u0F39\\u0F3E\\u0F3F\\u0F71-\\u0F84\\u0F86-\\u0F8B\\u0F90-\\u0F95\\u0F97\\u0F99-\\u0FAD\\u0FB1-\\u0FB7\\u0FB9\\u20D0-\\u20DC\\u20E1\\u302A-\\u302F\\u3099\\u309A';
      var digit = '0-9\\u0660-\\u0669\\u06F0-\\u06F9\\u0966-\\u096F\\u09E6-\\u09EF\\u0A66-\\u0A6F\\u0AE6-\\u0AEF\\u0B66-\\u0B6F\\u0BE7-\\u0BEF\\u0C66-\\u0C6F\\u0CE6-\\u0CEF\\u0D66-\\u0D6F\\u0E50-\\u0E59\\u0ED0-\\u0ED9\\u0F20-\\u0F29';
      var extender = '\\xB7\\u02D0\\u02D1\\u0387\\u0640\\u0E46\\u0EC6\\u3005\\u3031-\\u3035\\u309D\\u309E\\u30FC-\\u30FE';
      var letter = 'A-Za-z\\xC0-\\xD6\\xD8-\\xF6\\xF8-\\u0131\\u0134-\\u013E\\u0141-\\u0148\\u014A-\\u017E\\u0180-\\u01C3\\u01CD-\\u01F0\\u01F4\\u01F5\\u01FA-\\u0217\\u0250-\\u02A8\\u02BB-\\u02C1\\u0386\\u0388-\\u038A\\u038C\\u038E-\\u03A1\\u03A3-\\u03CE\\u03D0-\\u03D6\\u03DA\\u03DC\\u03DE\\u03E0\\u03E2-\\u03F3\\u0401-\\u040C\\u040E-\\u044F\\u0451-\\u045C\\u045E-\\u0481\\u0490-\\u04C4\\u04C7\\u04C8\\u04CB\\u04CC\\u04D0-\\u04EB\\u04EE-\\u04F5\\u04F8\\u04F9\\u0531-\\u0556\\u0559\\u0561-\\u0586\\u05D0-\\u05EA\\u05F0-\\u05F2\\u0621-\\u063A\\u0641-\\u064A\\u0671-\\u06B7\\u06BA-\\u06BE\\u06C0-\\u06CE\\u06D0-\\u06D3\\u06D5\\u06E5\\u06E6\\u0905-\\u0939\\u093D\\u0958-\\u0961\\u0985-\\u098C\\u098F\\u0990\\u0993-\\u09A8\\u09AA-\\u09B0\\u09B2\\u09B6-\\u09B9\\u09DC\\u09DD\\u09DF-\\u09E1\\u09F0\\u09F1\\u0A05-\\u0A0A\\u0A0F\\u0A10\\u0A13-\\u0A28\\u0A2A-\\u0A30\\u0A32\\u0A33\\u0A35\\u0A36\\u0A38\\u0A39\\u0A59-\\u0A5C\\u0A5E\\u0A72-\\u0A74\\u0A85-\\u0A8B\\u0A8D\\u0A8F-\\u0A91\\u0A93-\\u0AA8\\u0AAA-\\u0AB0\\u0AB2\\u0AB3\\u0AB5-\\u0AB9\\u0ABD\\u0AE0\\u0B05-\\u0B0C\\u0B0F\\u0B10\\u0B13-\\u0B28\\u0B2A-\\u0B30\\u0B32\\u0B33\\u0B36-\\u0B39\\u0B3D\\u0B5C\\u0B5D\\u0B5F-\\u0B61\\u0B85-\\u0B8A\\u0B8E-\\u0B90\\u0B92-\\u0B95\\u0B99\\u0B9A\\u0B9C\\u0B9E\\u0B9F\\u0BA3\\u0BA4\\u0BA8-\\u0BAA\\u0BAE-\\u0BB5\\u0BB7-\\u0BB9\\u0C05-\\u0C0C\\u0C0E-\\u0C10\\u0C12-\\u0C28\\u0C2A-\\u0C33\\u0C35-\\u0C39\\u0C60\\u0C61\\u0C85-\\u0C8C\\u0C8E-\\u0C90\\u0C92-\\u0CA8\\u0CAA-\\u0CB3\\u0CB5-\\u0CB9\\u0CDE\\u0CE0\\u0CE1\\u0D05-\\u0D0C\\u0D0E-\\u0D10\\u0D12-\\u0D28\\u0D2A-\\u0D39\\u0D60\\u0D61\\u0E01-\\u0E2E\\u0E30\\u0E32\\u0E33\\u0E40-\\u0E45\\u0E81\\u0E82\\u0E84\\u0E87\\u0E88\\u0E8A\\u0E8D\\u0E94-\\u0E97\\u0E99-\\u0E9F\\u0EA1-\\u0EA3\\u0EA5\\u0EA7\\u0EAA\\u0EAB\\u0EAD\\u0EAE\\u0EB0\\u0EB2\\u0EB3\\u0EBD\\u0EC0-\\u0EC4\\u0F40-\\u0F47\\u0F49-\\u0F69\\u10A0-\\u10C5\\u10D0-\\u10F6\\u1100\\u1102\\u1103\\u1105-\\u1107\\u1109\\u110B\\u110C\\u110E-\\u1112\\u113C\\u113E\\u1140\\u114C\\u114E\\u1150\\u1154\\u1155\\u1159\\u115F-\\u1161\\u1163\\u1165\\u1167\\u1169\\u116D\\u116E\\u1172\\u1173\\u1175\\u119E\\u11A8\\u11AB\\u11AE\\u11AF\\u11B7\\u11B8\\u11BA\\u11BC-\\u11C2\\u11EB\\u11F0\\u11F9\\u1E00-\\u1E9B\\u1EA0-\\u1EF9\\u1F00-\\u1F15\\u1F18-\\u1F1D\\u1F20-\\u1F45\\u1F48-\\u1F4D\\u1F50-\\u1F57\\u1F59\\u1F5B\\u1F5D\\u1F5F-\\u1F7D\\u1F80-\\u1FB4\\u1FB6-\\u1FBC\\u1FBE\\u1FC2-\\u1FC4\\u1FC6-\\u1FCC\\u1FD0-\\u1FD3\\u1FD6-\\u1FDB\\u1FE0-\\u1FEC\\u1FF2-\\u1FF4\\u1FF6-\\u1FFC\\u2126\\u212A\\u212B\\u212E\\u2180-\\u2182\\u3007\\u3021-\\u3029\\u3041-\\u3094\\u30A1-\\u30FA\\u3105-\\u312C\\u4E00-\\u9FA5\\uAC00-\\uD7A3';
      var ncname = '[' + letter + '_][' + letter + digit + '\\.\\-_' + combiningChar + extender + ']*';
      return '((?:' + ncname + '\\:)?' + ncname + ')';
    })(),
    startTagOpen = new RegExp('^<' + qnameCapture),
    startTagClose = /^\s*(\/?)>/,
    endTag = new RegExp('^<\\/' + qnameCapture + '[^>]*>'),
    doctype = /^<!DOCTYPE\s?[^>]+>/i;

var IS_REGEX_CAPTURING_BROKEN = false;
'x'.replace(/x(.)?/g, function(m, g) {
  IS_REGEX_CAPTURING_BROKEN = g === '';
});

// Empty Elements
var empty = makeMap('area,base,basefont,br,col,embed,frame,hr,img,input,isindex,keygen,link,meta,param,source,track,wbr');

// Inline Elements
var inline = makeMap('a,abbr,acronym,applet,b,basefont,bdo,big,br,button,cite,code,del,dfn,em,font,i,iframe,img,input,ins,kbd,label,map,noscript,object,q,s,samp,script,select,small,span,strike,strong,sub,sup,svg,textarea,tt,u,var');

// Elements that you can, intentionally, leave open
// (and which close themselves)
var closeSelf = makeMap('colgroup,dd,dt,li,option,p,td,tfoot,th,thead,tr,source');

// Attributes that have their values filled in disabled='disabled'
var fillAttrs = makeMap('checked,compact,declare,defer,disabled,ismap,multiple,nohref,noresize,noshade,nowrap,readonly,selected');

// Special Elements (can contain anything)
var special = makeMap('script,style');

// HTML5 tags https://html.spec.whatwg.org/multipage/indices.html#elements-3
// Phrasing Content https://html.spec.whatwg.org/multipage/dom.html#phrasing-content
var nonPhrasing = makeMap('address,article,aside,base,blockquote,body,caption,col,colgroup,dd,details,dialog,div,dl,dt,fieldset,figcaption,figure,footer,form,h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,legend,li,menuitem,meta,ol,optgroup,option,param,rp,rt,source,style,summary,tbody,td,tfoot,th,thead,title,tr,track,ul');

var reCache = {};

function attrForHandler(handler) {
  var pattern = singleAttrIdentifier.source +
                '(?:\\s*(' + joinSingleAttrAssigns(handler) + ')' +
                '[ \\t\\n\\f\\r]*(?:' + singleAttrValues.join('|') + '))?';
  if (handler.customAttrSurround) {
    var attrClauses = [];
    for (var i = handler.customAttrSurround.length - 1; i >= 0; i--) {
      attrClauses[i] = '(?:' +
                       '(' + handler.customAttrSurround[i][0].source + ')\\s*' +
                       pattern +
                       '\\s*(' + handler.customAttrSurround[i][1].source + ')' +
                       ')';
    }
    attrClauses.push('(?:' + pattern + ')');
    pattern = '(?:' + attrClauses.join('|') + ')';
  }
  return new RegExp('^\\s*' + pattern);
}

function joinSingleAttrAssigns(handler) {
  return singleAttrAssigns.concat(
    handler.customAttrAssign || []
  ).map(function(assign) {
    return '(?:' + assign.source + ')';
  }).join('|');
}

function HTMLParser(html, handler) {
  var stack = [], lastTag;
  var attribute = attrForHandler(handler);
  var last, prevTag, nextTag;
  while (html) {
    last = html;
    // Make sure we're not in a script or style element
    if (!lastTag || !special(lastTag)) {
      var textEnd = html.indexOf('<');
      if (textEnd === 0) {
        // Comment:
        if (/^<!--/.test(html)) {
          var commentEnd = html.indexOf('-->');

          if (commentEnd >= 0) {
            if (handler.comment) {
              handler.comment(html.substring(4, commentEnd));
            }
            html = html.substring(commentEnd + 3);
            prevTag = '';
            continue;
          }
        }

        // https://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment
        if (/^<!\[/.test(html)) {
          var conditionalEnd = html.indexOf(']>');

          if (conditionalEnd >= 0) {
            if (handler.comment) {
              handler.comment(html.substring(2, conditionalEnd + 1), true /* non-standard */);
            }
            html = html.substring(conditionalEnd + 2);
            prevTag = '';
            continue;
          }
        }

        // Doctype:
        var doctypeMatch = html.match(doctype);
        if (doctypeMatch) {
          if (handler.doctype) {
            handler.doctype(doctypeMatch[0]);
          }
          html = html.substring(doctypeMatch[0].length);
          prevTag = '';
          continue;
        }

        // End tag:
        var endTagMatch = html.match(endTag);
        if (endTagMatch) {
          html = html.substring(endTagMatch[0].length);
          endTagMatch[0].replace(endTag, parseEndTag);
          prevTag = '/' + endTagMatch[1].toLowerCase();
          continue;
        }

        // Start tag:
        var startTagMatch = parseStartTag(html);
        if (startTagMatch) {
          html = startTagMatch.rest;
          handleStartTag(startTagMatch);
          prevTag = startTagMatch.tagName.toLowerCase();
          continue;
        }
      }

      var text;
      if (textEnd >= 0) {
        text = html.substring(0, textEnd);
        html = html.substring(textEnd);
      }
      else {
        text = html;
        html = '';
      }

      // next tag
      var nextTagMatch = parseStartTag(html);
      if (nextTagMatch) {
        nextTag = nextTagMatch.tagName;
      }
      else {
        nextTagMatch = html.match(endTag);
        if (nextTagMatch) {
          nextTag = '/' + nextTagMatch[1];
        }
        else {
          nextTag = '';
        }
      }

      if (handler.chars) {
        handler.chars(text, prevTag, nextTag);
      }
      prevTag = '';

    }
    else {
      var stackedTag = lastTag.toLowerCase();
      var reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)</' + stackedTag + '[^>]*>', 'i'));

      html = html.replace(reStackedTag, function(all, text) {
        if (stackedTag !== 'script' && stackedTag !== 'style' && stackedTag !== 'noscript') {
          text = text
            .replace(/<!--([\s\S]*?)-->/g, '$1')
            .replace(/<!\[CDATA\[([\s\S]*?)]]>/g, '$1');
        }

        if (handler.chars) {
          handler.chars(text);
        }

        return '';
      });

      parseEndTag('</' + stackedTag + '>', stackedTag);
    }

    if (html === last) {
      throw new Error('Parse Error: ' + html);
    }
  }

  if (!handler.partialMarkup) {
    // Clean up any remaining tags
    parseEndTag();
  }

  function parseStartTag(input) {
    var start = input.match(startTagOpen);
    if (start) {
      var match = {
        tagName: start[1],
        attrs: []
      };
      input = input.slice(start[0].length);
      var end, attr;
      while (!(end = input.match(startTagClose)) && (attr = input.match(attribute))) {
        input = input.slice(attr[0].length);
        match.attrs.push(attr);
      }
      if (end) {
        match.unarySlash = end[1];
        match.rest = input.slice(end[0].length);
        return match;
      }
    }
  }

  function closeIfFound(tagName) {
    if (findTag(tagName) >= 0) {
      parseEndTag('', tagName);
      return true;
    }
  }

  function handleStartTag(match) {
    var tagName = match.tagName;
    var unarySlash = match.unarySlash;

    if (handler.html5) {
      if (lastTag === 'p' && nonPhrasing(tagName)) {
        parseEndTag('', lastTag);
      }
      else if (tagName === 'tbody') {
        closeIfFound('thead');
      }
      else if (tagName === 'tfoot') {
        if (!closeIfFound('tbody')) {
          closeIfFound('thead');
        }
      }
      if (tagName === 'col' && findTag('colgroup') < 0) {
        lastTag = 'colgroup';
        stack.push({ tag: lastTag, attrs: [] });
        if (handler.start) {
          handler.start(lastTag, [], false, '');
        }
      }
    }

    if (!handler.html5 && !inline(tagName)) {
      while (lastTag && inline(lastTag)) {
        parseEndTag('', lastTag);
      }
    }

    if (closeSelf(tagName) && lastTag === tagName) {
      parseEndTag('', tagName);
    }

    var unary = empty(tagName) || tagName === 'html' && lastTag === 'head' || !!unarySlash;

    var attrs = match.attrs.map(function(args) {
      var name, value, customOpen, customClose, customAssign, quote;
      var ncp = 7; // number of captured parts, scalar

      // hackish work around FF bug https://bugzilla.mozilla.org/show_bug.cgi?id=369778
      if (IS_REGEX_CAPTURING_BROKEN && args[0].indexOf('""') === -1) {
        if (args[3] === '') { delete args[3]; }
        if (args[4] === '') { delete args[4]; }
        if (args[5] === '') { delete args[5]; }
      }

      function populate(index) {
        customAssign = args[index];
        value = args[index + 1];
        if (typeof value !== 'undefined') {
          return '"';
        }
        value = args[index + 2];
        if (typeof value !== 'undefined') {
          return '\'';
        }
        value = args[index + 3];
        if (typeof value === 'undefined' && fillAttrs(name)) {
          value = name;
        }
        return '';
      }

      var j = 1;
      if (handler.customAttrSurround) {
        for (var i = 0, l = handler.customAttrSurround.length; i < l; i++, j += ncp) {
          name = args[j + 1];
          if (name) {
            quote = populate(j + 2);
            customOpen = args[j];
            customClose = args[j + 6];
            break;
          }
        }
      }

      if (!name && (name = args[j])) {
        quote = populate(j + 1);
      }

      return {
        name: name,
        value: value,
        customAssign: customAssign || '=',
        customOpen: customOpen || '',
        customClose: customClose || '',
        quote: quote || ''
      };
    });

    if (!unary) {
      stack.push({ tag: tagName, attrs: attrs });
      lastTag = tagName;
      unarySlash = '';
    }

    if (handler.start) {
      handler.start(tagName, attrs, unary, unarySlash);
    }
  }

  function findTag(tagName) {
    var pos;
    var needle = tagName.toLowerCase();
    for (pos = stack.length - 1; pos >= 0; pos--) {
      if (stack[pos].tag.toLowerCase() === needle) {
        break;
      }
    }
    return pos;
  }

  function parseEndTag(tag, tagName) {
    var pos;

    // Find the closest opened tag of the same type
    if (tagName) {
      pos = findTag(tagName);
    }
    // If no tag name is provided, clean shop
    else {
      pos = 0;
    }

    if (pos >= 0) {
      // Close all the open elements, up the stack
      for (var i = stack.length - 1; i >= pos; i--) {
        if (handler.end) {
          handler.end(stack[i].tag, stack[i].attrs, i > pos || !tag);
        }
      }

      // Remove the open elements from the stack
      stack.length = pos;
      lastTag = pos && stack[pos - 1].tag;
    }
    else if (tagName.toLowerCase() === 'br') {
      if (handler.start) {
        handler.start(tagName, [], true, '');
      }
    }
    else if (tagName.toLowerCase() === 'p') {
      if (handler.start) {
        handler.start(tagName, [], false, '', true);
      }
      if (handler.end) {
        handler.end(tagName, []);
      }
    }
  }
}

exports.HTMLParser = HTMLParser;
exports.HTMLtoXML = function(html) {
  var results = '';

  new HTMLParser(html, {
    start: function(tag, attrs, unary) {
      results += '<' + tag;

      for (var i = 0, len = attrs.length; i < len; i++) {
        results += ' ' + attrs[i].name + '="' + (attrs[i].value || '').replace(/"/g, '&#34;') + '"';
      }

      results += (unary ? '/' : '') + '>';
    },
    end: function(tag) {
      results += '</' + tag + '>';
    },
    chars: function(text) {
      results += text;
    },
    comment: function(text) {
      results += '<!--' + text + '-->';
    },
    ignore: function(text) {
      results += text;
    }
  });

  return results;
};

exports.HTMLtoDOM = function(html, doc) {
  // There can be only one of these elements
  var one = {
    html: true,
    head: true,
    body: true,
    title: true
  };

  // Enforce a structure for the document
  var structure = {
    link: 'head',
    base: 'head'
  };

  if (doc) {
    doc = doc.ownerDocument || doc.getOwnerDocument && doc.getOwnerDocument() || doc;
  }
  else if (typeof DOMDocument !== 'undefined') {
    doc = new DOMDocument();
  }
  else if (typeof document !== 'undefined' && document.implementation && document.implementation.createDocument) {
    doc = document.implementation.createDocument('', '', null);
  }
  else if (typeof ActiveX !== 'undefined') {
    doc = new ActiveXObject('Msxml.DOMDocument');
  }

  var elems = [],
      documentElement = doc.documentElement ||
        doc.getDocumentElement && doc.getDocumentElement();

  // If we're dealing with an empty document then we
  // need to pre-populate it with the HTML document structure
  if (!documentElement && doc.createElement) {
    (function() {
      var html = doc.createElement('html');
      var head = doc.createElement('head');
      head.appendChild(doc.createElement('title'));
      html.appendChild(head);
      html.appendChild(doc.createElement('body'));
      doc.appendChild(html);
    })();
  }

  // Find all the unique elements
  if (doc.getElementsByTagName) {
    for (var i in one) {
      one[i] = doc.getElementsByTagName(i)[0];
    }
  }

  // If we're working with a document, inject contents into
  // the body element
  var curParentNode = one.body;

  new HTMLParser(html, {
    start: function(tagName, attrs, unary) {
      // If it's a pre-built element, then we can ignore
      // its construction
      if (one[tagName]) {
        curParentNode = one[tagName];
        return;
      }

      var elem = doc.createElement(tagName);

      for (var attr in attrs) {
        elem.setAttribute(attrs[attr].name, attrs[attr].value);
      }

      if (structure[tagName] && typeof one[structure[tagName]] !== 'boolean') {
        one[structure[tagName]].appendChild(elem);
      }
      else if (curParentNode && curParentNode.appendChild) {
        curParentNode.appendChild(elem);
      }

      if (!unary) {
        elems.push(elem);
        curParentNode = elem;
      }
    },
    end: function(/* tag */) {
      elems.length -= 1;

      // Init the new parentNode
      curParentNode = elems[elems.length - 1];
    },
    chars: function(text) {
      curParentNode.appendChild(doc.createTextNode(text));
    },
    comment: function(/* text */) {
      // create comment node
    },
    ignore: function(/* text */) {
      // What to do here?
    }
  });

  return doc;
};

},{"./utils":168}],167:[function(require,module,exports){
'use strict';

function Sorter() {
}

Sorter.prototype.sort = function(tokens, fromIndex) {
  fromIndex = fromIndex || 0;
  for (var i = 0, len = this.keys.length; i < len; i++) {
    var key = this.keys[i];
    var token = key.slice(1);
    var index = tokens.indexOf(token, fromIndex);
    if (index !== -1) {
      do {
        if (index !== fromIndex) {
          tokens.splice(index, 1);
          tokens.splice(fromIndex, 0, token);
        }
        fromIndex++;
      } while ((index = tokens.indexOf(token, fromIndex)) !== -1);
      return this[key].sort(tokens, fromIndex);
    }
  }
  return tokens;
};

function TokenChain() {
}

TokenChain.prototype = {
  add: function(tokens) {
    var self = this;
    tokens.forEach(function(token) {
      var key = '$' + token;
      if (!self[key]) {
        self[key] = [];
        self[key].processed = 0;
      }
      self[key].push(tokens);
    });
  },
  createSorter: function() {
    var self = this;
    var sorter = new Sorter();
    sorter.keys = Object.keys(self).sort(function(j, k) {
      var m = self[j].length;
      var n = self[k].length;
      return m < n ? 1 : m > n ? -1 : j < k ? -1 : j > k ? 1 : 0;
    }).filter(function(key) {
      if (self[key].processed < self[key].length) {
        var token = key.slice(1);
        var chain = new TokenChain();
        self[key].forEach(function(tokens) {
          var index;
          while ((index = tokens.indexOf(token)) !== -1) {
            tokens.splice(index, 1);
          }
          tokens.forEach(function(token) {
            self['$' + token].processed++;
          });
          chain.add(tokens.slice(0));
        });
        sorter[key] = chain.createSorter();
        return true;
      }
      return false;
    });
    return sorter;
  }
};

module.exports = TokenChain;

},{}],168:[function(require,module,exports){
'use strict';

function createMap(values, ignoreCase) {
  var map = {};
  values.forEach(function(value) {
    map[value] = 1;
  });
  return ignoreCase ? function(value) {
    return map[value.toLowerCase()] === 1;
  } : function(value) {
    return map[value] === 1;
  };
}

exports.createMap = createMap;
exports.createMapFromString = function(values, ignoreCase) {
  return createMap(values.split(/,/), ignoreCase);
};

},{}],"html-minifier":[function(require,module,exports){
'use strict';

var CleanCSS = require('clean-css');
var decode = require('he').decode;
var HTMLParser = require('./htmlparser').HTMLParser;
var RelateUrl = require('relateurl');
var TokenChain = require('./tokenchain');
var UglifyJS = require('uglify-js');
var utils = require('./utils');

function trimWhitespace(str) {
  return str && str.replace(/^[ \n\r\t\f]+/, '').replace(/[ \n\r\t\f]+$/, '');
}

function collapseWhitespaceAll(str) {
  // Non-breaking space is specifically handled inside the replacer function here:
  return str && str.replace(/[ \n\r\t\f\xA0]+/g, function(spaces) {
    return spaces === '\t' ? '\t' : spaces.replace(/(^|\xA0+)[^\xA0]+/g, '$1 ');
  });
}

function collapseWhitespace(str, options, trimLeft, trimRight, collapseAll) {
  var lineBreakBefore = '', lineBreakAfter = '';

  if (options.preserveLineBreaks) {
    str = str.replace(/^[ \n\r\t\f]*?[\n\r][ \n\r\t\f]*/, function() {
      lineBreakBefore = '\n';
      return '';
    }).replace(/[ \n\r\t\f]*?[\n\r][ \n\r\t\f]*$/, function() {
      lineBreakAfter = '\n';
      return '';
    });
  }

  if (trimLeft) {
    // Non-breaking space is specifically handled inside the replacer function here:
    str = str.replace(/^[ \n\r\t\f\xA0]+/, function(spaces) {
      var conservative = !lineBreakBefore && options.conservativeCollapse;
      if (conservative && spaces === '\t') {
        return '\t';
      }
      return spaces.replace(/^[^\xA0]+/, '').replace(/(\xA0+)[^\xA0]+/g, '$1 ') || (conservative ? ' ' : '');
    });
  }

  if (trimRight) {
    // Non-breaking space is specifically handled inside the replacer function here:
    str = str.replace(/[ \n\r\t\f\xA0]+$/, function(spaces) {
      var conservative = !lineBreakAfter && options.conservativeCollapse;
      if (conservative && spaces === '\t') {
        return '\t';
      }
      return spaces.replace(/[^\xA0]+(\xA0+)/g, ' $1').replace(/[^\xA0]+$/, '') || (conservative ? ' ' : '');
    });
  }

  if (collapseAll) {
    // strip non space whitespace then compress spaces to one
    str = collapseWhitespaceAll(str);
  }

  return lineBreakBefore + str + lineBreakAfter;
}

var createMapFromString = utils.createMapFromString;
// non-empty tags that will maintain whitespace around them
var inlineTags = createMapFromString('a,abbr,acronym,b,bdi,bdo,big,button,cite,code,del,dfn,em,font,i,ins,kbd,label,mark,math,nobr,object,q,rp,rt,rtc,ruby,s,samp,select,small,span,strike,strong,sub,sup,svg,textarea,time,tt,u,var');
// non-empty tags that will maintain whitespace within them
var inlineTextTags = createMapFromString('a,abbr,acronym,b,big,del,em,font,i,ins,kbd,mark,nobr,rp,s,samp,small,span,strike,strong,sub,sup,time,tt,u,var');
// self-closing tags that will maintain whitespace around them
var selfClosingInlineTags = createMapFromString('comment,img,input,wbr');

function collapseWhitespaceSmart(str, prevTag, nextTag, options) {
  var trimLeft = prevTag && !selfClosingInlineTags(prevTag);
  if (trimLeft && !options.collapseInlineTagWhitespace) {
    trimLeft = prevTag.charAt(0) === '/' ? !inlineTags(prevTag.slice(1)) : !inlineTextTags(prevTag);
  }
  var trimRight = nextTag && !selfClosingInlineTags(nextTag);
  if (trimRight && !options.collapseInlineTagWhitespace) {
    trimRight = nextTag.charAt(0) === '/' ? !inlineTextTags(nextTag.slice(1)) : !inlineTags(nextTag);
  }
  return collapseWhitespace(str, options, trimLeft, trimRight, prevTag && nextTag);
}

function isConditionalComment(text) {
  return /^\[if\s[^\]]+]|\[endif]$/.test(text);
}

function isIgnoredComment(text, options) {
  for (var i = 0, len = options.ignoreCustomComments.length; i < len; i++) {
    if (options.ignoreCustomComments[i].test(text)) {
      return true;
    }
  }
  return false;
}

function isEventAttribute(attrName, options) {
  var patterns = options.customEventAttributes;
  if (patterns) {
    for (var i = patterns.length; i--;) {
      if (patterns[i].test(attrName)) {
        return true;
      }
    }
    return false;
  }
  return /^on[a-z]{3,}$/.test(attrName);
}

function canRemoveAttributeQuotes(value) {
  // https://mathiasbynens.be/notes/unquoted-attribute-values
  return /^[^ \t\n\f\r"'`=<>]+$/.test(value);
}

function attributesInclude(attributes, attribute) {
  for (var i = attributes.length; i--;) {
    if (attributes[i].name.toLowerCase() === attribute) {
      return true;
    }
  }
  return false;
}

function isAttributeRedundant(tag, attrName, attrValue, attrs) {
  attrValue = attrValue ? trimWhitespace(attrValue.toLowerCase()) : '';

  return (
    tag === 'script' &&
    attrName === 'language' &&
    attrValue === 'javascript' ||

    tag === 'form' &&
    attrName === 'method' &&
    attrValue === 'get' ||

    tag === 'input' &&
    attrName === 'type' &&
    attrValue === 'text' ||

    tag === 'script' &&
    attrName === 'charset' &&
    !attributesInclude(attrs, 'src') ||

    tag === 'a' &&
    attrName === 'name' &&
    attributesInclude(attrs, 'id') ||

    tag === 'area' &&
    attrName === 'shape' &&
    attrValue === 'rect'
  );
}

// https://mathiasbynens.be/demo/javascript-mime-type
// https://developer.mozilla.org/en/docs/Web/HTML/Element/script#attr-type
var executableScriptsMimetypes = utils.createMap([
  'text/javascript',
  'text/ecmascript',
  'text/jscript',
  'application/javascript',
  'application/x-javascript',
  'application/ecmascript'
]);

function isScriptTypeAttribute(attrValue) {
  attrValue = trimWhitespace(attrValue.split(/;/, 2)[0]).toLowerCase();
  return attrValue === '' || executableScriptsMimetypes(attrValue);
}

function isExecutableScript(tag, attrs) {
  if (tag !== 'script') {
    return false;
  }
  for (var i = 0, len = attrs.length; i < len; i++) {
    var attrName = attrs[i].name.toLowerCase();
    if (attrName === 'type') {
      return isScriptTypeAttribute(attrs[i].value);
    }
  }
  return true;
}

function isStyleLinkTypeAttribute(attrValue) {
  attrValue = trimWhitespace(attrValue).toLowerCase();
  return attrValue === '' || attrValue === 'text/css';
}

function isStyleSheet(tag, attrs) {
  if (tag !== 'style') {
    return false;
  }
  for (var i = 0, len = attrs.length; i < len; i++) {
    var attrName = attrs[i].name.toLowerCase();
    if (attrName === 'type') {
      return isStyleLinkTypeAttribute(attrs[i].value);
    }
  }
  return true;
}

var isSimpleBoolean = createMapFromString('allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,default,defaultchecked,defaultmuted,defaultselected,defer,disabled,enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,required,reversed,scoped,seamless,selected,sortable,truespeed,typemustmatch,visible');
var isBooleanValue = createMapFromString('true,false');

function isBooleanAttribute(attrName, attrValue) {
  return isSimpleBoolean(attrName) || attrName === 'draggable' && !isBooleanValue(attrValue);
}

function isUriTypeAttribute(attrName, tag) {
  return (
    /^(?:a|area|link|base)$/.test(tag) && attrName === 'href' ||
    tag === 'img' && /^(?:src|longdesc|usemap)$/.test(attrName) ||
    tag === 'object' && /^(?:classid|codebase|data|usemap)$/.test(attrName) ||
    tag === 'q' && attrName === 'cite' ||
    tag === 'blockquote' && attrName === 'cite' ||
    (tag === 'ins' || tag === 'del') && attrName === 'cite' ||
    tag === 'form' && attrName === 'action' ||
    tag === 'input' && (attrName === 'src' || attrName === 'usemap') ||
    tag === 'head' && attrName === 'profile' ||
    tag === 'script' && (attrName === 'src' || attrName === 'for')
  );
}

function isNumberTypeAttribute(attrName, tag) {
  return (
    /^(?:a|area|object|button)$/.test(tag) && attrName === 'tabindex' ||
    tag === 'input' && (attrName === 'maxlength' || attrName === 'tabindex') ||
    tag === 'select' && (attrName === 'size' || attrName === 'tabindex') ||
    tag === 'textarea' && /^(?:rows|cols|tabindex)$/.test(attrName) ||
    tag === 'colgroup' && attrName === 'span' ||
    tag === 'col' && attrName === 'span' ||
    (tag === 'th' || tag === 'td') && (attrName === 'rowspan' || attrName === 'colspan')
  );
}

function isLinkType(tag, attrs, value) {
  if (tag !== 'link') {
    return false;
  }
  for (var i = 0, len = attrs.length; i < len; i++) {
    if (attrs[i].name === 'rel' && attrs[i].value === value) {
      return true;
    }
  }
}

function isMediaQuery(tag, attrs, attrName) {
  return attrName === 'media' && (isLinkType(tag, attrs, 'stylesheet') || isStyleSheet(tag, attrs));
}

var srcsetTags = createMapFromString('img,source');

function isSrcset(attrName, tag) {
  return attrName === 'srcset' && srcsetTags(tag);
}

function cleanAttributeValue(tag, attrName, attrValue, options, attrs) {
  if (isEventAttribute(attrName, options)) {
    attrValue = trimWhitespace(attrValue).replace(/^javascript:\s*/i, '');
    return options.minifyJS(attrValue, true);
  }
  else if (attrName === 'class') {
    attrValue = trimWhitespace(attrValue);
    if (options.sortClassName) {
      attrValue = options.sortClassName(attrValue);
    }
    else {
      attrValue = collapseWhitespaceAll(attrValue);
    }
    return attrValue;
  }
  else if (isUriTypeAttribute(attrName, tag)) {
    attrValue = trimWhitespace(attrValue);
    return isLinkType(tag, attrs, 'canonical') ? attrValue : options.minifyURLs(attrValue);
  }
  else if (isNumberTypeAttribute(attrName, tag)) {
    return trimWhitespace(attrValue);
  }
  else if (attrName === 'style') {
    attrValue = trimWhitespace(attrValue);
    if (attrValue) {
      if (/;$/.test(attrValue) && !/&#?[0-9a-zA-Z]+;$/.test(attrValue)) {
        attrValue = attrValue.replace(/\s*;$/, ';');
      }
      attrValue = options.minifyCSS(attrValue, 'inline');
    }
    return attrValue;
  }
  else if (isSrcset(attrName, tag)) {
    // https://html.spec.whatwg.org/multipage/embedded-content.html#attr-img-srcset
    attrValue = trimWhitespace(attrValue).split(/\s+,\s*|\s*,\s+/).map(function(candidate) {
      var url = candidate;
      var descriptor = '';
      var match = candidate.match(/\s+([1-9][0-9]*w|[0-9]+(?:\.[0-9]+)?x)$/);
      if (match) {
        url = url.slice(0, -match[0].length);
        var num = +match[1].slice(0, -1);
        var suffix = match[1].slice(-1);
        if (num !== 1 || suffix !== 'x') {
          descriptor = ' ' + num + suffix;
        }
      }
      return options.minifyURLs(url) + descriptor;
    }).join(', ');
  }
  else if (isMetaViewport(tag, attrs) && attrName === 'content') {
    attrValue = attrValue.replace(/\s+/g, '').replace(/[0-9]+\.[0-9]+/g, function(numString) {
      // "0.90000" -> "0.9"
      // "1.0" -> "1"
      // "1.0001" -> "1.0001" (unchanged)
      return (+numString).toString();
    });
  }
  else if (options.customAttrCollapse && options.customAttrCollapse.test(attrName)) {
    attrValue = attrValue.replace(/\n+|\r+|\s{2,}/g, '');
  }
  else if (tag === 'script' && attrName === 'type') {
    attrValue = trimWhitespace(attrValue.replace(/\s*;\s*/g, ';'));
  }
  else if (isMediaQuery(tag, attrs, attrName)) {
    attrValue = trimWhitespace(attrValue);
    return options.minifyCSS(attrValue, 'media');
  }
  return attrValue;
}

function isMetaViewport(tag, attrs) {
  if (tag !== 'meta') {
    return false;
  }
  for (var i = 0, len = attrs.length; i < len; i++) {
    if (attrs[i].name === 'name' && attrs[i].value === 'viewport') {
      return true;
    }
  }
}

function ignoreCSS(id) {
  return '/* clean-css ignore:start */' + id + '/* clean-css ignore:end */';
}

// Wrap CSS declarations for CleanCSS > 3.x
// See https://github.com/jakubpawlowicz/clean-css/issues/418
function wrapCSS(text, type) {
  switch (type) {
    case 'inline':
      return '*{' + text + '}';
    case 'media':
      return '@media ' + text + '{a{top:0}}';
    default:
      return text;
  }
}

function unwrapCSS(text, type) {
  var matches;
  switch (type) {
    case 'inline':
      matches = text.match(/^\*\{([\s\S]*)\}$/);
      break;
    case 'media':
      matches = text.match(/^@media ([\s\S]*?)\s*{[\s\S]*}$/);
      break;
  }
  return matches ? matches[1] : text;
}

function cleanConditionalComment(comment, options) {
  return options.processConditionalComments ? comment.replace(/^(\[if\s[^\]]+]>)([\s\S]*?)(<!\[endif])$/, function(match, prefix, text, suffix) {
    return prefix + minify(text, options, true) + suffix;
  }) : comment;
}

function processScript(text, options, currentAttrs) {
  for (var i = 0, len = currentAttrs.length; i < len; i++) {
    if (currentAttrs[i].name.toLowerCase() === 'type' &&
        options.processScripts.indexOf(currentAttrs[i].value) > -1) {
      return minify(text, options);
    }
  }
  return text;
}

// Tag omission rules from https://html.spec.whatwg.org/multipage/syntax.html#optional-tags
// with the following deviations:
// - retain <body> if followed by <noscript>
// - </rb>, </rt>, </rtc>, </rp> & </tfoot> follow https://www.w3.org/TR/html5/syntax.html#optional-tags
// - retain all tags which are adjacent to non-standard HTML tags
var optionalStartTags = createMapFromString('html,head,body,colgroup,tbody');
var optionalEndTags = createMapFromString('html,head,body,li,dt,dd,p,rb,rt,rtc,rp,optgroup,option,colgroup,caption,thead,tbody,tfoot,tr,td,th');
var headerTags = createMapFromString('meta,link,script,style,template,noscript');
var descriptionTags = createMapFromString('dt,dd');
var pBlockTags = createMapFromString('address,article,aside,blockquote,details,div,dl,fieldset,figcaption,figure,footer,form,h1,h2,h3,h4,h5,h6,header,hgroup,hr,main,menu,nav,ol,p,pre,section,table,ul');
var pInlineTags = createMapFromString('a,audio,del,ins,map,noscript,video');
var rubyTags = createMapFromString('rb,rt,rtc,rp');
var rtcTag = createMapFromString('rb,rtc,rp');
var optionTag = createMapFromString('option,optgroup');
var tableContentTags = createMapFromString('tbody,tfoot');
var tableSectionTags = createMapFromString('thead,tbody,tfoot');
var cellTags = createMapFromString('td,th');
var topLevelTags = createMapFromString('html,head,body');
var compactTags = createMapFromString('html,body');
var looseTags = createMapFromString('head,colgroup,caption');
var trailingTags = createMapFromString('dt,thead');
var htmlTags = createMapFromString('a,abbr,acronym,address,applet,area,article,aside,audio,b,base,basefont,bdi,bdo,bgsound,big,blink,blockquote,body,br,button,canvas,caption,center,cite,code,col,colgroup,command,content,data,datalist,dd,del,details,dfn,dialog,dir,div,dl,dt,element,em,embed,fieldset,figcaption,figure,font,footer,form,frame,frameset,h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,i,iframe,image,img,input,ins,isindex,kbd,keygen,label,legend,li,link,listing,main,map,mark,marquee,menu,menuitem,meta,meter,multicol,nav,nobr,noembed,noframes,noscript,object,ol,optgroup,option,output,p,param,picture,plaintext,pre,progress,q,rb,rp,rt,rtc,ruby,s,samp,script,section,select,shadow,small,source,spacer,span,strike,strong,style,sub,summary,sup,table,tbody,td,template,textarea,tfoot,th,thead,time,title,tr,track,tt,u,ul,var,video,wbr,xmp');

function canRemoveParentTag(optionalStartTag, tag) {
  switch (optionalStartTag) {
    case 'html':
    case 'head':
      return true;
    case 'body':
      return !headerTags(tag);
    case 'colgroup':
      return tag === 'col';
    case 'tbody':
      return tag === 'tr';
  }
  return false;
}

function isStartTagMandatory(optionalEndTag, tag) {
  switch (tag) {
    case 'colgroup':
      return optionalEndTag === 'colgroup';
    case 'tbody':
      return tableSectionTags(optionalEndTag);
  }
  return false;
}

function canRemovePrecedingTag(optionalEndTag, tag) {
  switch (optionalEndTag) {
    case 'html':
    case 'head':
    case 'body':
    case 'colgroup':
    case 'caption':
      return true;
    case 'li':
    case 'optgroup':
    case 'tr':
      return tag === optionalEndTag;
    case 'dt':
    case 'dd':
      return descriptionTags(tag);
    case 'p':
      return pBlockTags(tag);
    case 'rb':
    case 'rt':
    case 'rp':
      return rubyTags(tag);
    case 'rtc':
      return rtcTag(tag);
    case 'option':
      return optionTag(tag);
    case 'thead':
    case 'tbody':
      return tableContentTags(tag);
    case 'tfoot':
      return tag === 'tbody';
    case 'td':
    case 'th':
      return cellTags(tag);
  }
  return false;
}

var reEmptyAttribute = new RegExp(
  '^(?:class|id|style|title|lang|dir|on(?:focus|blur|change|click|dblclick|mouse(' +
    '?:down|up|over|move|out)|key(?:press|down|up)))$');

function canDeleteEmptyAttribute(tag, attrName, attrValue, options) {
  var isValueEmpty = !attrValue || /^\s*$/.test(attrValue);
  if (!isValueEmpty) {
    return false;
  }
  if (typeof options.removeEmptyAttributes === 'function') {
    return options.removeEmptyAttributes(attrName, tag);
  }
  return tag === 'input' && attrName === 'value' || reEmptyAttribute.test(attrName);
}

function hasAttrName(name, attrs) {
  for (var i = attrs.length - 1; i >= 0; i--) {
    if (attrs[i].name === name) {
      return true;
    }
  }
  return false;
}

function canRemoveElement(tag, attrs) {
  switch (tag) {
    case 'textarea':
      return false;
    case 'audio':
    case 'script':
    case 'video':
      if (hasAttrName('src', attrs)) {
        return false;
      }
      break;
    case 'iframe':
      if (hasAttrName('src', attrs) || hasAttrName('srcdoc', attrs)) {
        return false;
      }
      break;
    case 'object':
      if (hasAttrName('data', attrs)) {
        return false;
      }
      break;
    case 'applet':
      if (hasAttrName('code', attrs)) {
        return false;
      }
      break;
  }
  return true;
}

function canCollapseWhitespace(tag) {
  return !/^(?:script|style|pre|textarea)$/.test(tag);
}

function canTrimWhitespace(tag) {
  return !/^(?:pre|textarea)$/.test(tag);
}

function normalizeAttr(attr, attrs, tag, options) {
  var attrName = options.name(attr.name),
      attrValue = attr.value;

  if (options.decodeEntities && attrValue) {
    attrValue = decode(attrValue, { isAttributeValue: true });
  }

  if (options.removeRedundantAttributes &&
    isAttributeRedundant(tag, attrName, attrValue, attrs) ||
    options.removeScriptTypeAttributes && tag === 'script' &&
    attrName === 'type' && isScriptTypeAttribute(attrValue) ||
    options.removeStyleLinkTypeAttributes && (tag === 'style' || tag === 'link') &&
    attrName === 'type' && isStyleLinkTypeAttribute(attrValue)) {
    return;
  }

  if (attrValue) {
    attrValue = cleanAttributeValue(tag, attrName, attrValue, options, attrs);
  }

  if (options.removeEmptyAttributes &&
      canDeleteEmptyAttribute(tag, attrName, attrValue, options)) {
    return;
  }

  if (options.decodeEntities && attrValue) {
    attrValue = attrValue.replace(/&(#?[0-9a-zA-Z]+;)/g, '&amp;$1');
  }

  return {
    attr: attr,
    name: attrName,
    value: attrValue
  };
}

function buildAttr(normalized, hasUnarySlash, options, isLast, uidAttr) {
  var attrName = normalized.name,
      attrValue = normalized.value,
      attr = normalized.attr,
      attrQuote = attr.quote,
      attrFragment,
      emittedAttrValue;

  if (typeof attrValue !== 'undefined' && (!options.removeAttributeQuotes ||
      ~attrValue.indexOf(uidAttr) || !canRemoveAttributeQuotes(attrValue))) {
    if (!options.preventAttributesEscaping) {
      if (typeof options.quoteCharacter === 'undefined') {
        var apos = (attrValue.match(/'/g) || []).length;
        var quot = (attrValue.match(/"/g) || []).length;
        attrQuote = apos < quot ? '\'' : '"';
      }
      else {
        attrQuote = options.quoteCharacter === '\'' ? '\'' : '"';
      }
      if (attrQuote === '"') {
        attrValue = attrValue.replace(/"/g, '&#34;');
      }
      else {
        attrValue = attrValue.replace(/'/g, '&#39;');
      }
    }
    emittedAttrValue = attrQuote + attrValue + attrQuote;
    if (!isLast && !options.removeTagWhitespace) {
      emittedAttrValue += ' ';
    }
  }
  // make sure trailing slash is not interpreted as HTML self-closing tag
  else if (isLast && !hasUnarySlash && !/\/$/.test(attrValue)) {
    emittedAttrValue = attrValue;
  }
  else {
    emittedAttrValue = attrValue + ' ';
  }

  if (typeof attrValue === 'undefined' || options.collapseBooleanAttributes &&
      isBooleanAttribute(attrName.toLowerCase(), attrValue.toLowerCase())) {
    attrFragment = attrName;
    if (!isLast) {
      attrFragment += ' ';
    }
  }
  else {
    attrFragment = attrName + attr.customAssign + emittedAttrValue;
  }

  return attr.customOpen + attrFragment + attr.customClose;
}

function identity(value) {
  return value;
}

function processOptions(values) {
  var options = {
    name: function(name) {
      return name.toLowerCase();
    },
    canCollapseWhitespace: canCollapseWhitespace,
    canTrimWhitespace: canTrimWhitespace,
    html5: true,
    ignoreCustomComments: [/^!/],
    ignoreCustomFragments: [
      /<%[\s\S]*?%>/,
      /<\?[\s\S]*?\?>/
    ],
    includeAutoGeneratedTags: true,
    log: identity,
    minifyCSS: identity,
    minifyJS: identity,
    minifyURLs: identity
  };
  Object.keys(values).forEach(function(key) {
    var value = values[key];
    if (key === 'caseSensitive') {
      if (value) {
        options.name = identity;
      }
    }
    else if (key === 'log') {
      if (typeof value === 'function') {
        options.log = value;
      }
    }
    else if (key === 'minifyCSS' && typeof value !== 'function') {
      if (!value) {
        return;
      }
      if (typeof value !== 'object') {
        value = {};
      }
      options.minifyCSS = function(text, type) {
        text = text.replace(/(url\s*\(\s*)("|'|)(.*?)\2(\s*\))/ig, function(match, prefix, quote, url, suffix) {
          return prefix + quote + options.minifyURLs(url) + quote + suffix;
        });
        var cleanCssOutput = new CleanCSS(value).minify(wrapCSS(text, type));
        if (cleanCssOutput.errors.length > 0) {
          cleanCssOutput.errors.forEach(options.log);
          return text;
        }
        return unwrapCSS(cleanCssOutput.styles, type);
      };
    }
    else if (key === 'minifyJS' && typeof value !== 'function') {
      if (!value) {
        return;
      }
      if (typeof value !== 'object') {
        value = {};
      }
      (value.parse || (value.parse = {})).bare_returns = false;
      options.minifyJS = function(text, inline) {
        var start = text.match(/^\s*<!--.*/);
        var code = start ? text.slice(start[0].length).replace(/\n\s*-->\s*$/, '') : text;
        value.parse.bare_returns = inline;
        var result = UglifyJS.minify(code, value);
        if (result.error) {
          options.log(result.error);
          return text;
        }
        return result.code.replace(/;$/, '');
      };
    }
    else if (key === 'minifyURLs' && typeof value !== 'function') {
      if (!value) {
        return;
      }
      if (typeof value === 'string') {
        value = { site: value };
      }
      else if (typeof value !== 'object') {
        value = {};
      }
      options.minifyURLs = function(text) {
        try {
          return RelateUrl.relate(text, value);
        }
        catch (err) {
          options.log(err);
          return text;
        }
      };
    }
    else {
      options[key] = value;
    }
  });
  return options;
}

function uniqueId(value) {
  var id;
  do {
    id = Math.random().toString(36).replace(/^0\.[0-9]*/, '');
  } while (~value.indexOf(id));
  return id;
}

var specialContentTags = createMapFromString('script,style');

function createSortFns(value, options, uidIgnore, uidAttr) {
  var attrChains = options.sortAttributes && Object.create(null);
  var classChain = options.sortClassName && new TokenChain();

  function attrNames(attrs) {
    return attrs.map(function(attr) {
      return options.name(attr.name);
    });
  }

  function shouldSkipUID(token, uid) {
    return !uid || token.indexOf(uid) === -1;
  }

  function shouldSkipUIDs(token) {
    return shouldSkipUID(token, uidIgnore) && shouldSkipUID(token, uidAttr);
  }

  function scan(input) {
    var currentTag, currentType;
    new HTMLParser(input, {
      start: function(tag, attrs) {
        if (attrChains) {
          if (!attrChains[tag]) {
            attrChains[tag] = new TokenChain();
          }
          attrChains[tag].add(attrNames(attrs).filter(shouldSkipUIDs));
        }
        for (var i = 0, len = attrs.length; i < len; i++) {
          var attr = attrs[i];
          if (classChain && attr.value && options.name(attr.name) === 'class') {
            classChain.add(trimWhitespace(attr.value).split(/[ \t\n\f\r]+/).filter(shouldSkipUIDs));
          }
          else if (options.processScripts && attr.name.toLowerCase() === 'type') {
            currentTag = tag;
            currentType = attr.value;
          }
        }
      },
      end: function() {
        currentTag = '';
      },
      chars: function(text) {
        if (options.processScripts && specialContentTags(currentTag) &&
            options.processScripts.indexOf(currentType) > -1) {
          scan(text);
        }
      }
    });
  }

  var log = options.log;
  options.log = identity;
  options.sortAttributes = false;
  options.sortClassName = false;
  scan(minify(value, options));
  options.log = log;
  if (attrChains) {
    var attrSorters = Object.create(null);
    for (var tag in attrChains) {
      attrSorters[tag] = attrChains[tag].createSorter();
    }
    options.sortAttributes = function(tag, attrs) {
      var sorter = attrSorters[tag];
      if (sorter) {
        var attrMap = Object.create(null);
        var names = attrNames(attrs);
        names.forEach(function(name, index) {
          (attrMap[name] || (attrMap[name] = [])).push(attrs[index]);
        });
        sorter.sort(names).forEach(function(name, index) {
          attrs[index] = attrMap[name].shift();
        });
      }
    };
  }
  if (classChain) {
    var sorter = classChain.createSorter();
    options.sortClassName = function(value) {
      return sorter.sort(value.split(/[ \n\f\r]+/)).join(' ');
    };
  }
}

function minify(value, options, partialMarkup) {
  if (options.collapseWhitespace) {
    value = collapseWhitespace(value, options, true, true);
  }

  var buffer = [],
      charsPrevTag,
      currentChars = '',
      hasChars,
      currentTag = '',
      currentAttrs = [],
      stackNoTrimWhitespace = [],
      stackNoCollapseWhitespace = [],
      optionalStartTag = '',
      optionalEndTag = '',
      ignoredMarkupChunks = [],
      ignoredCustomMarkupChunks = [],
      uidIgnore,
      uidAttr,
      uidPattern;

  // temporarily replace ignored chunks with comments,
  // so that we don't have to worry what's there.
  // for all we care there might be
  // completely-horribly-broken-alien-non-html-emoj-cthulhu-filled content
  value = value.replace(/<!-- htmlmin:ignore -->([\s\S]*?)<!-- htmlmin:ignore -->/g, function(match, group1) {
    if (!uidIgnore) {
      uidIgnore = uniqueId(value);
      var pattern = new RegExp('^' + uidIgnore + '([0-9]+)$');
      if (options.ignoreCustomComments) {
        options.ignoreCustomComments = options.ignoreCustomComments.slice();
      }
      else {
        options.ignoreCustomComments = [];
      }
      options.ignoreCustomComments.push(pattern);
    }
    var token = '<!--' + uidIgnore + ignoredMarkupChunks.length + '-->';
    ignoredMarkupChunks.push(group1);
    return token;
  });

  var customFragments = options.ignoreCustomFragments.map(function(re) {
    return re.source;
  });
  if (customFragments.length) {
    var reCustomIgnore = new RegExp('\\s*(?:' + customFragments.join('|') + ')+\\s*', 'g');
    // temporarily replace custom ignored fragments with unique attributes
    value = value.replace(reCustomIgnore, function(match) {
      if (!uidAttr) {
        uidAttr = uniqueId(value);
        uidPattern = new RegExp('(\\s*)' + uidAttr + '([0-9]+)(\\s*)', 'g');
        if (options.minifyCSS) {
          options.minifyCSS = (function(fn) {
            return function(text, type) {
              text = text.replace(uidPattern, function(match, prefix, index) {
                var chunks = ignoredCustomMarkupChunks[+index];
                return chunks[1] + uidAttr + index + chunks[2];
              });
              var ids = [];
              new CleanCSS().minify(wrapCSS(text, type)).warnings.forEach(function(warning) {
                var match = uidPattern.exec(warning);
                if (match) {
                  var id = uidAttr + match[2];
                  text = text.replace(id, ignoreCSS(id));
                  ids.push(id);
                }
              });
              text = fn(text, type);
              ids.forEach(function(id) {
                text = text.replace(ignoreCSS(id), id);
              });
              return text;
            };
          })(options.minifyCSS);
        }
        if (options.minifyJS) {
          options.minifyJS = (function(fn) {
            return function(text, type) {
              return fn(text.replace(uidPattern, function(match, prefix, index) {
                var chunks = ignoredCustomMarkupChunks[+index];
                return chunks[1] + uidAttr + index + chunks[2];
              }), type);
            };
          })(options.minifyJS);
        }
      }
      var token = uidAttr + ignoredCustomMarkupChunks.length;
      ignoredCustomMarkupChunks.push(/^(\s*)[\s\S]*?(\s*)$/.exec(match));
      return '\t' + token + '\t';
    });
  }

  if (options.sortAttributes && typeof options.sortAttributes !== 'function' ||
      options.sortClassName && typeof options.sortClassName !== 'function') {
    createSortFns(value, options, uidIgnore, uidAttr);
  }

  function _canCollapseWhitespace(tag, attrs) {
    return options.canCollapseWhitespace(tag, attrs, canCollapseWhitespace);
  }

  function _canTrimWhitespace(tag, attrs) {
    return options.canTrimWhitespace(tag, attrs, canTrimWhitespace);
  }

  function removeStartTag() {
    var index = buffer.length - 1;
    while (index > 0 && !/^<[^/!]/.test(buffer[index])) {
      index--;
    }
    buffer.length = Math.max(0, index);
  }

  function removeEndTag() {
    var index = buffer.length - 1;
    while (index > 0 && !/^<\//.test(buffer[index])) {
      index--;
    }
    buffer.length = Math.max(0, index);
  }

  // look for trailing whitespaces, bypass any inline tags
  function trimTrailingWhitespace(index, nextTag) {
    for (var endTag = null; index >= 0 && _canTrimWhitespace(endTag); index--) {
      var str = buffer[index];
      var match = str.match(/^<\/([\w:-]+)>$/);
      if (match) {
        endTag = match[1];
      }
      else if (/>$/.test(str) || (buffer[index] = collapseWhitespaceSmart(str, null, nextTag, options))) {
        break;
      }
    }
  }

  // look for trailing whitespaces from previously processed text
  // which may not be trimmed due to a following comment or an empty
  // element which has now been removed
  function squashTrailingWhitespace(nextTag) {
    var charsIndex = buffer.length - 1;
    if (buffer.length > 1) {
      var item = buffer[buffer.length - 1];
      if (/^(?:<!|$)/.test(item) && item.indexOf(uidIgnore) === -1) {
        charsIndex--;
      }
    }
    trimTrailingWhitespace(charsIndex, nextTag);
  }

  new HTMLParser(value, {
    partialMarkup: partialMarkup,
    html5: options.html5,

    start: function(tag, attrs, unary, unarySlash, autoGenerated) {
      if (tag.toLowerCase() === 'svg') {
        options = Object.create(options);
        options.caseSensitive = true;
        options.keepClosingSlash = true;
        options.name = identity;
      }
      tag = options.name(tag);
      currentTag = tag;
      charsPrevTag = tag;
      if (!inlineTextTags(tag)) {
        currentChars = '';
      }
      hasChars = false;
      currentAttrs = attrs;

      var optional = options.removeOptionalTags;
      if (optional) {
        var htmlTag = htmlTags(tag);
        // <html> may be omitted if first thing inside is not comment
        // <head> may be omitted if first thing inside is an element
        // <body> may be omitted if first thing inside is not space, comment, <meta>, <link>, <script>, <style> or <template>
        // <colgroup> may be omitted if first thing inside is <col>
        // <tbody> may be omitted if first thing inside is <tr>
        if (htmlTag && canRemoveParentTag(optionalStartTag, tag)) {
          removeStartTag();
        }
        optionalStartTag = '';
        // end-tag-followed-by-start-tag omission rules
        if (htmlTag && canRemovePrecedingTag(optionalEndTag, tag)) {
          removeEndTag();
          // <colgroup> cannot be omitted if preceding </colgroup> is omitted
          // <tbody> cannot be omitted if preceding </tbody>, </thead> or </tfoot> is omitted
          optional = !isStartTagMandatory(optionalEndTag, tag);
        }
        optionalEndTag = '';
      }

      // set whitespace flags for nested tags (eg. <code> within a <pre>)
      if (options.collapseWhitespace) {
        if (!stackNoTrimWhitespace.length) {
          squashTrailingWhitespace(tag);
        }
        if (!unary) {
          if (!_canTrimWhitespace(tag, attrs) || stackNoTrimWhitespace.length) {
            stackNoTrimWhitespace.push(tag);
          }
          if (!_canCollapseWhitespace(tag, attrs) || stackNoCollapseWhitespace.length) {
            stackNoCollapseWhitespace.push(tag);
          }
        }
      }

      var openTag = '<' + tag;
      var hasUnarySlash = unarySlash && options.keepClosingSlash;

      buffer.push(openTag);

      if (options.sortAttributes) {
        options.sortAttributes(tag, attrs);
      }

      var parts = [];
      for (var i = attrs.length, isLast = true; --i >= 0;) {
        var normalized = normalizeAttr(attrs[i], attrs, tag, options);
        if (normalized) {
          parts.unshift(buildAttr(normalized, hasUnarySlash, options, isLast, uidAttr));
          isLast = false;
        }
      }
      if (parts.length > 0) {
        buffer.push(' ');
        buffer.push.apply(buffer, parts);
      }
      // start tag must never be omitted if it has any attributes
      else if (optional && optionalStartTags(tag)) {
        optionalStartTag = tag;
      }

      buffer.push(buffer.pop() + (hasUnarySlash ? '/' : '') + '>');

      if (autoGenerated && !options.includeAutoGeneratedTags) {
        removeStartTag();
        optionalStartTag = '';
      }
    },
    end: function(tag, attrs, autoGenerated) {
      if (tag.toLowerCase() === 'svg') {
        options = Object.getPrototypeOf(options);
      }
      tag = options.name(tag);

      // check if current tag is in a whitespace stack
      if (options.collapseWhitespace) {
        if (stackNoTrimWhitespace.length) {
          if (tag === stackNoTrimWhitespace[stackNoTrimWhitespace.length - 1]) {
            stackNoTrimWhitespace.pop();
          }
        }
        else {
          squashTrailingWhitespace('/' + tag);
        }
        if (stackNoCollapseWhitespace.length &&
          tag === stackNoCollapseWhitespace[stackNoCollapseWhitespace.length - 1]) {
          stackNoCollapseWhitespace.pop();
        }
      }

      var isElementEmpty = false;
      if (tag === currentTag) {
        currentTag = '';
        isElementEmpty = !hasChars;
      }

      if (options.removeOptionalTags) {
        // <html>, <head> or <body> may be omitted if the element is empty
        if (isElementEmpty && topLevelTags(optionalStartTag)) {
          removeStartTag();
        }
        optionalStartTag = '';
        // </html> or </body> may be omitted if not followed by comment
        // </head> may be omitted if not followed by space or comment
        // </p> may be omitted if no more content in non-</a> parent
        // except for </dt> or </thead>, end tags may be omitted if no more content in parent element
        if (htmlTags(tag) && optionalEndTag && !trailingTags(optionalEndTag) && (optionalEndTag !== 'p' || !pInlineTags(tag))) {
          removeEndTag();
        }
        optionalEndTag = optionalEndTags(tag) ? tag : '';
      }

      if (options.removeEmptyElements && isElementEmpty && canRemoveElement(tag, attrs)) {
        // remove last "element" from buffer
        removeStartTag();
        optionalStartTag = '';
        optionalEndTag = '';
      }
      else {
        if (autoGenerated && !options.includeAutoGeneratedTags) {
          optionalEndTag = '';
        }
        else {
          buffer.push('</' + tag + '>');
        }
        charsPrevTag = '/' + tag;
        if (!inlineTags(tag)) {
          currentChars = '';
        }
        else if (isElementEmpty) {
          currentChars += '|';
        }
      }
    },
    chars: function(text, prevTag, nextTag) {
      prevTag = prevTag === '' ? 'comment' : prevTag;
      nextTag = nextTag === '' ? 'comment' : nextTag;
      if (options.decodeEntities && text && !specialContentTags(currentTag)) {
        text = decode(text);
      }
      if (options.collapseWhitespace) {
        if (!stackNoTrimWhitespace.length) {
          if (prevTag === 'comment') {
            var prevComment = buffer[buffer.length - 1];
            if (prevComment.indexOf(uidIgnore) === -1) {
              if (!prevComment) {
                prevTag = charsPrevTag;
              }
              if (buffer.length > 1 && (!prevComment || !options.conservativeCollapse && / $/.test(currentChars))) {
                var charsIndex = buffer.length - 2;
                buffer[charsIndex] = buffer[charsIndex].replace(/\s+$/, function(trailingSpaces) {
                  text = trailingSpaces + text;
                  return '';
                });
              }
            }
          }
          if (prevTag) {
            if (prevTag === '/nobr' || prevTag === 'wbr') {
              if (/^\s/.test(text)) {
                var tagIndex = buffer.length - 1;
                while (tagIndex > 0 && buffer[tagIndex].lastIndexOf('<' + prevTag) !== 0) {
                  tagIndex--;
                }
                trimTrailingWhitespace(tagIndex - 1, 'br');
              }
            }
            else if (inlineTextTags(prevTag.charAt(0) === '/' ? prevTag.slice(1) : prevTag)) {
              text = collapseWhitespace(text, options, /(?:^|\s)$/.test(currentChars));
            }
          }
          if (prevTag || nextTag) {
            text = collapseWhitespaceSmart(text, prevTag, nextTag, options);
          }
          else {
            text = collapseWhitespace(text, options, true, true);
          }
          if (!text && /\s$/.test(currentChars) && prevTag && prevTag.charAt(0) === '/') {
            trimTrailingWhitespace(buffer.length - 1, nextTag);
          }
        }
        if (!stackNoCollapseWhitespace.length && nextTag !== 'html' && !(prevTag && nextTag)) {
          text = collapseWhitespace(text, options, false, false, true);
        }
      }
      if (options.processScripts && specialContentTags(currentTag)) {
        text = processScript(text, options, currentAttrs);
      }
      if (isExecutableScript(currentTag, currentAttrs)) {
        text = options.minifyJS(text);
      }
      if (isStyleSheet(currentTag, currentAttrs)) {
        text = options.minifyCSS(text);
      }
      if (options.removeOptionalTags && text) {
        // <html> may be omitted if first thing inside is not comment
        // <body> may be omitted if first thing inside is not space, comment, <meta>, <link>, <script>, <style> or <template>
        if (optionalStartTag === 'html' || optionalStartTag === 'body' && !/^\s/.test(text)) {
          removeStartTag();
        }
        optionalStartTag = '';
        // </html> or </body> may be omitted if not followed by comment
        // </head>, </colgroup> or </caption> may be omitted if not followed by space or comment
        if (compactTags(optionalEndTag) || looseTags(optionalEndTag) && !/^\s/.test(text)) {
          removeEndTag();
        }
        optionalEndTag = '';
      }
      charsPrevTag = /^\s*$/.test(text) ? prevTag : 'comment';
      if (options.decodeEntities && text && !specialContentTags(currentTag)) {
        // Escape any `&` symbols that start either:
        // 1) a legacy named character reference (i.e. one that doesn't end with `;`)
        // 2) or any other character reference (i.e. one that does end with `;`)
        // Note that `&` can be escaped as `&amp`, without the semi-colon.
        // https://mathiasbynens.be/notes/ambiguous-ampersands
        text = text.replace(/&((?:Iacute|aacute|uacute|plusmn|Otilde|otilde|agrave|Agrave|Yacute|yacute|Oslash|oslash|atilde|Atilde|brvbar|ccedil|Ccedil|Ograve|curren|divide|eacute|Eacute|ograve|Oacute|egrave|Egrave|Ugrave|frac12|frac14|frac34|ugrave|oacute|iacute|Ntilde|ntilde|Uacute|middot|igrave|Igrave|iquest|Aacute|cedil|laquo|micro|iexcl|Icirc|icirc|acirc|Ucirc|Ecirc|ocirc|Ocirc|ecirc|ucirc|Aring|aring|AElig|aelig|acute|pound|raquo|Acirc|times|THORN|szlig|thorn|COPY|auml|ordf|ordm|Uuml|macr|uuml|Auml|ouml|Ouml|para|nbsp|euml|quot|QUOT|Euml|yuml|cent|sect|copy|sup1|sup2|sup3|iuml|Iuml|ETH|shy|reg|not|yen|amp|AMP|REG|uml|eth|deg|gt|GT|LT|lt)(?!;)|(?:#?[0-9a-zA-Z]+;))/g, '&amp$1').replace(/</g, '&lt;');
      }
      if (uidPattern && options.collapseWhitespace && stackNoTrimWhitespace.length) {
        text = text.replace(uidPattern, function(match, prefix, index) {
          return ignoredCustomMarkupChunks[+index][0];
        });
      }
      currentChars += text;
      if (text) {
        hasChars = true;
      }
      buffer.push(text);
    },
    comment: function(text, nonStandard) {
      var prefix = nonStandard ? '<!' : '<!--';
      var suffix = nonStandard ? '>' : '-->';
      if (isConditionalComment(text)) {
        text = prefix + cleanConditionalComment(text, options) + suffix;
      }
      else if (options.removeComments) {
        if (isIgnoredComment(text, options)) {
          text = '<!--' + text + '-->';
        }
        else {
          text = '';
        }
      }
      else {
        text = prefix + text + suffix;
      }
      if (options.removeOptionalTags && text) {
        // preceding comments suppress tag omissions
        optionalStartTag = '';
        optionalEndTag = '';
      }
      buffer.push(text);
    },
    doctype: function(doctype) {
      buffer.push(options.useShortDoctype ? '<!doctype' +
        (options.removeTagWhitespace ? '' : ' ') + 'html>' :
        collapseWhitespaceAll(doctype));
    },
    customAttrAssign: options.customAttrAssign,
    customAttrSurround: options.customAttrSurround
  });

  if (options.removeOptionalTags) {
    // <html> may be omitted if first thing inside is not comment
    // <head> or <body> may be omitted if empty
    if (topLevelTags(optionalStartTag)) {
      removeStartTag();
    }
    // except for </dt> or </thead>, end tags may be omitted if no more content in parent element
    if (optionalEndTag && !trailingTags(optionalEndTag)) {
      removeEndTag();
    }
  }
  if (options.collapseWhitespace) {
    squashTrailingWhitespace('br');
  }

  return joinResultSegments(buffer, options, uidPattern ? function(str) {
    return str.replace(uidPattern, function(match, prefix, index, suffix) {
      var chunk = ignoredCustomMarkupChunks[+index][0];
      if (options.collapseWhitespace) {
        if (prefix !== '\t') {
          chunk = prefix + chunk;
        }
        if (suffix !== '\t') {
          chunk += suffix;
        }
        return collapseWhitespace(chunk, {
          preserveLineBreaks: options.preserveLineBreaks,
          conservativeCollapse: !options.trimCustomFragments
        }, /^[ \n\r\t\f]/.test(chunk), /[ \n\r\t\f]$/.test(chunk));
      }
      return chunk;
    });
  } : identity, uidIgnore ? function(str) {
    return str.replace(new RegExp('<!--' + uidIgnore + '([0-9]+)-->', 'g'), function(match, index) {
      return ignoredMarkupChunks[+index];
    });
  } : identity);
}

function joinResultSegments(results, options, restoreCustom, restoreIgnore) {
  var str;
  var maxLineLength = options.maxLineLength;
  if (maxLineLength) {
    var line = '', lines = [];
    while (results.length) {
      var len = line.length;
      var end = results[0].indexOf('\n');
      if (end < 0) {
        line += restoreIgnore(restoreCustom(results.shift()));
      }
      else {
        line += restoreIgnore(restoreCustom(results[0].slice(0, end)));
        results[0] = results[0].slice(end + 1);
      }
      if (len > 0 && line.length > maxLineLength) {
        lines.push(line.slice(0, len));
        line = line.slice(len);
      }
      else if (end >= 0) {
        lines.push(line);
        line = '';
      }
    }
    if (line) {
      lines.push(line);
    }
    str = lines.join('\n');
  }
  else {
    str = restoreIgnore(restoreCustom(results.join('')));
  }
  return options.collapseWhitespace ? collapseWhitespace(str, options, true, true) : str;
}

exports.minify = function(value, options) {
  var start = Date.now();
  options = processOptions(options || {});
  var result = minify(value, options);
  options.log('minified in: ' + (Date.now() - start) + 'ms');
  return result;
};

},{"./htmlparser":166,"./tokenchain":167,"./utils":168,"clean-css":6,"he":103,"relateurl":128,"uglify-js":"uglify-js"}],"uglify-js":[function(require,module,exports){
(function (Buffer){
(function(exports){"use strict";function characters(str){return str.split("")}function member(name,array){return array.indexOf(name)>=0}function find_if(func,array){for(var i=array.length;--i>=0;)if(func(array[i]))return array[i]}function repeat_string(str,i){if(i<=0)return"";if(i==1)return str;var d=repeat_string(str,i>>1);d+=d;return i&1?d+str:d}function configure_error_stack(fn){Object.defineProperty(fn.prototype,"stack",{get:function(){var err=new Error(this.message);err.name=this.name;try{throw err}catch(e){return e.stack}}})}function DefaultsError(msg,defs){this.message=msg;this.defs=defs}DefaultsError.prototype=Object.create(Error.prototype);DefaultsError.prototype.constructor=DefaultsError;DefaultsError.prototype.name="DefaultsError";configure_error_stack(DefaultsError);function defaults(args,defs,croak){if(args===true)args={};var ret=args||{};if(croak)for(var i in ret)if(HOP(ret,i)&&!HOP(defs,i)){throw new DefaultsError("`"+i+"` is not a supported option",defs)}for(var i in defs)if(HOP(defs,i)){ret[i]=args&&HOP(args,i)?args[i]:defs[i]}return ret}function merge(obj,ext){var count=0;for(var i in ext)if(HOP(ext,i)){obj[i]=ext[i];count++}return count}function noop(){}function return_false(){return false}function return_true(){return true}function return_this(){return this}function return_null(){return null}var MAP=function(){function MAP(a,f,backwards){var ret=[],top=[],i;function doit(){var val=f(a[i],i);var is_last=val instanceof Last;if(is_last)val=val.v;if(val instanceof AtTop){val=val.v;if(val instanceof Splice){top.push.apply(top,backwards?val.v.slice().reverse():val.v)}else{top.push(val)}}else if(val!==skip){if(val instanceof Splice){ret.push.apply(ret,backwards?val.v.slice().reverse():val.v)}else{ret.push(val)}}return is_last}if(Array.isArray(a)){if(backwards){for(i=a.length;--i>=0;)if(doit())break;ret.reverse();top.reverse()}else{for(i=0;i<a.length;++i)if(doit())break}}else{for(i in a)if(HOP(a,i))if(doit())break}return top.concat(ret)}MAP.at_top=function(val){return new AtTop(val)};MAP.splice=function(val){return new Splice(val)};MAP.last=function(val){return new Last(val)};var skip=MAP.skip={};function AtTop(val){this.v=val}function Splice(val){this.v=val}function Last(val){this.v=val}return MAP}();function push_uniq(array,el){if(array.indexOf(el)<0)return array.push(el)}function string_template(text,props){return text.replace(/\{(.+?)\}/g,function(str,p){return props&&props[p]})}function remove(array,el){var index=array.indexOf(el);if(index>=0)array.splice(index,1)}function makePredicate(words){if(!Array.isArray(words))words=words.split(" ");var map=Object.create(null);words.forEach(function(word){map[word]=true});return map}function all(array,predicate){for(var i=array.length;--i>=0;)if(!predicate(array[i]))return false;return true}function Dictionary(){this._values=Object.create(null);this._size=0}Dictionary.prototype={set:function(key,val){if(!this.has(key))++this._size;this._values["$"+key]=val;return this},add:function(key,val){if(this.has(key)){this.get(key).push(val)}else{this.set(key,[val])}return this},get:function(key){return this._values["$"+key]},del:function(key){if(this.has(key)){--this._size;delete this._values["$"+key]}return this},has:function(key){return"$"+key in this._values},each:function(f){for(var i in this._values)f(this._values[i],i.substr(1))},size:function(){return this._size},map:function(f){var ret=[];for(var i in this._values)ret.push(f(this._values[i],i.substr(1)));return ret},clone:function(){var ret=new Dictionary;for(var i in this._values)ret._values[i]=this._values[i];ret._size=this._size;return ret},toObject:function(){return this._values}};Dictionary.fromObject=function(obj){var dict=new Dictionary;dict._size=merge(dict._values,obj);return dict};function HOP(obj,prop){return Object.prototype.hasOwnProperty.call(obj,prop)}function first_in_statement(stack){var node=stack.parent(-1);for(var i=0,p;p=stack.parent(i++);node=p){if(p.TYPE=="Call"){if(p.expression===node)continue}else if(p instanceof AST_Binary){if(p.left===node)continue}else if(p instanceof AST_Conditional){if(p.condition===node)continue}else if(p instanceof AST_PropAccess){if(p.expression===node)continue}else if(p instanceof AST_Sequence){if(p.expressions[0]===node)continue}else if(p instanceof AST_Statement){return p.body===node}else if(p instanceof AST_UnaryPostfix){if(p.expression===node)continue}return false}}"use strict";function DEFNODE(type,props,methods,base){if(typeof base==="undefined")base=AST_Node;props=props?props.split(/\s+/):[];var self_props=props;if(base&&base.PROPS)props=props.concat(base.PROPS);var code=["return function AST_",type,"(props){","if(props){"];props.forEach(function(prop){code.push("this.",prop,"=props.",prop,";")});var proto=base&&new base;if(proto&&proto.initialize||methods&&methods.initialize)code.push("this.initialize();");code.push("}}");var ctor=new Function(code.join(""))();if(proto){ctor.prototype=proto;ctor.BASE=base}if(base)base.SUBCLASSES.push(ctor);ctor.prototype.CTOR=ctor;ctor.PROPS=props||null;ctor.SELF_PROPS=self_props;ctor.SUBCLASSES=[];if(type){ctor.prototype.TYPE=ctor.TYPE=type}if(methods)for(var name in methods)if(HOP(methods,name)){if(/^\$/.test(name)){ctor[name.substr(1)]=methods[name]}else{ctor.prototype[name]=methods[name]}}ctor.DEFMETHOD=function(name,method){this.prototype[name]=method};if(typeof exports!=="undefined"){exports["AST_"+type]=ctor}return ctor}var AST_Token=DEFNODE("Token","type value line col pos endline endcol endpos nlb comments_before comments_after file raw",{},null);var AST_Node=DEFNODE("Node","start end",{_clone:function(deep){if(deep){var self=this.clone();return self.transform(new TreeTransformer(function(node){if(node!==self){return node.clone(true)}}))}return new this.CTOR(this)},clone:function(deep){return this._clone(deep)},$documentation:"Base class of all AST nodes",$propdoc:{start:"[AST_Token] The first token of this node",end:"[AST_Token] The last token of this node"},_walk:function(visitor){return visitor._visit(this)},walk:function(visitor){return this._walk(visitor)}},null);AST_Node.warn=function(txt,props){if(AST_Node.warn_function)AST_Node.warn_function(string_template(txt,props))};var AST_Statement=DEFNODE("Statement",null,{$documentation:"Base class of all statements"});var AST_Debugger=DEFNODE("Debugger",null,{$documentation:"Represents a debugger statement"},AST_Statement);var AST_Directive=DEFNODE("Directive","value quote",{$documentation:'Represents a directive, like "use strict";',$propdoc:{value:"[string] The value of this directive as a plain string (it's not an AST_String!)",quote:"[string] the original quote character"}},AST_Statement);var AST_SimpleStatement=DEFNODE("SimpleStatement","body",{$documentation:"A statement consisting of an expression, i.e. a = 1 + 2",$propdoc:{body:"[AST_Node] an expression node (should not be instanceof AST_Statement)"},_walk:function(visitor){return visitor._visit(this,function(){this.body._walk(visitor)})}},AST_Statement);function walk_body(node,visitor){var body=node.body;if(body instanceof AST_Statement){body._walk(visitor)}else body.forEach(function(node){node._walk(visitor)})}var AST_Block=DEFNODE("Block","body",{$documentation:"A body of statements (usually braced)",$propdoc:{body:"[AST_Statement*] an array of statements"},_walk:function(visitor){return visitor._visit(this,function(){walk_body(this,visitor)})}},AST_Statement);var AST_BlockStatement=DEFNODE("BlockStatement",null,{$documentation:"A block statement"},AST_Block);var AST_EmptyStatement=DEFNODE("EmptyStatement",null,{$documentation:"The empty statement (empty block or simply a semicolon)"},AST_Statement);var AST_StatementWithBody=DEFNODE("StatementWithBody","body",{$documentation:"Base class for all statements that contain one nested body: `For`, `ForIn`, `Do`, `While`, `With`",$propdoc:{body:"[AST_Statement] the body; this should always be present, even if it's an AST_EmptyStatement"}},AST_Statement);var AST_LabeledStatement=DEFNODE("LabeledStatement","label",{$documentation:"Statement with a label",$propdoc:{label:"[AST_Label] a label definition"},_walk:function(visitor){return visitor._visit(this,function(){this.label._walk(visitor);this.body._walk(visitor)})},clone:function(deep){var node=this._clone(deep);if(deep){var label=node.label;var def=this.label;node.walk(new TreeWalker(function(node){if(node instanceof AST_LoopControl&&node.label&&node.label.thedef===def){node.label.thedef=label;label.references.push(node)}}))}return node}},AST_StatementWithBody);var AST_IterationStatement=DEFNODE("IterationStatement",null,{$documentation:"Internal class.  All loops inherit from it."},AST_StatementWithBody);var AST_DWLoop=DEFNODE("DWLoop","condition",{$documentation:"Base class for do/while statements",$propdoc:{condition:"[AST_Node] the loop condition.  Should not be instanceof AST_Statement"}},AST_IterationStatement);var AST_Do=DEFNODE("Do",null,{$documentation:"A `do` statement",_walk:function(visitor){return visitor._visit(this,function(){this.body._walk(visitor);this.condition._walk(visitor)})}},AST_DWLoop);var AST_While=DEFNODE("While",null,{$documentation:"A `while` statement",_walk:function(visitor){return visitor._visit(this,function(){this.condition._walk(visitor);this.body._walk(visitor)})}},AST_DWLoop);var AST_For=DEFNODE("For","init condition step",{$documentation:"A `for` statement",$propdoc:{init:"[AST_Node?] the `for` initialization code, or null if empty",condition:"[AST_Node?] the `for` termination clause, or null if empty",step:"[AST_Node?] the `for` update clause, or null if empty"},_walk:function(visitor){return visitor._visit(this,function(){if(this.init)this.init._walk(visitor);if(this.condition)this.condition._walk(visitor);if(this.step)this.step._walk(visitor);this.body._walk(visitor)})}},AST_IterationStatement);var AST_ForIn=DEFNODE("ForIn","init object",{$documentation:"A `for ... in` statement",$propdoc:{init:"[AST_Node] the `for/in` initialization code",object:"[AST_Node] the object that we're looping through"},_walk:function(visitor){return visitor._visit(this,function(){this.init._walk(visitor);this.object._walk(visitor);this.body._walk(visitor)})}},AST_IterationStatement);var AST_With=DEFNODE("With","expression",{$documentation:"A `with` statement",$propdoc:{expression:"[AST_Node] the `with` expression"},_walk:function(visitor){return visitor._visit(this,function(){this.expression._walk(visitor);this.body._walk(visitor)})}},AST_StatementWithBody);var AST_Scope=DEFNODE("Scope","variables functions uses_with uses_eval parent_scope enclosed cname",{$documentation:"Base class for all statements introducing a lexical scope",$propdoc:{variables:"[Object/S] a map of name -> SymbolDef for all variables/functions defined in this scope",functions:"[Object/S] like `variables`, but only lists function declarations",uses_with:"[boolean/S] tells whether this scope uses the `with` statement",uses_eval:"[boolean/S] tells whether this scope contains a direct call to the global `eval`",parent_scope:"[AST_Scope?/S] link to the parent scope",enclosed:"[SymbolDef*/S] a list of all symbol definitions that are accessed from this scope or any subscopes",cname:"[integer/S] current index for mangling variables (used internally by the mangler)"},clone:function(deep){var node=this._clone(deep);if(this.variables)node.variables=this.variables.clone();if(this.functions)node.functions=this.functions.clone();if(this.enclosed)node.enclosed=this.enclosed.slice();return node},pinned:function(){return this.uses_eval||this.uses_with}},AST_Block);var AST_Toplevel=DEFNODE("Toplevel","globals",{$documentation:"The toplevel scope",$propdoc:{globals:"[Object/S] a map of name -> SymbolDef for all undeclared names"},wrap_commonjs:function(name){var body=this.body;var wrapped_tl="(function(exports){'$ORIG';})(typeof "+name+"=='undefined'?("+name+"={}):"+name+");";wrapped_tl=parse(wrapped_tl);wrapped_tl=wrapped_tl.transform(new TreeTransformer(function(node){if(node instanceof AST_Directive&&node.value=="$ORIG"){return MAP.splice(body)}}));return wrapped_tl},wrap_enclose:function(args_values){if(typeof args_values!="string")args_values="";var index=args_values.indexOf(":");if(index<0)index=args_values.length;var body=this.body;return parse(["(function(",args_values.slice(0,index),'){"$ORIG"})(',args_values.slice(index+1),")"].join("")).transform(new TreeTransformer(function(node){if(node instanceof AST_Directive&&node.value=="$ORIG"){return MAP.splice(body)}}))}},AST_Scope);var AST_Lambda=DEFNODE("Lambda","name argnames uses_arguments",{$documentation:"Base class for functions",$propdoc:{name:"[AST_SymbolDeclaration?] the name of this function",argnames:"[AST_SymbolFunarg*] array of function arguments",uses_arguments:"[boolean/S] tells whether this function accesses the arguments array"},_walk:function(visitor){return visitor._visit(this,function(){if(this.name)this.name._walk(visitor);this.argnames.forEach(function(argname){argname._walk(visitor)});walk_body(this,visitor)})}},AST_Scope);var AST_Accessor=DEFNODE("Accessor",null,{$documentation:"A setter/getter function.  The `name` property is always null."},AST_Lambda);var AST_Function=DEFNODE("Function","inlined",{$documentation:"A function expression"},AST_Lambda);var AST_Defun=DEFNODE("Defun","inlined",{$documentation:"A function definition"},AST_Lambda);var AST_Jump=DEFNODE("Jump",null,{$documentation:"Base class for “jumps” (for now that's `return`, `throw`, `break` and `continue`)"},AST_Statement);var AST_Exit=DEFNODE("Exit","value",{$documentation:"Base class for “exits” (`return` and `throw`)",$propdoc:{value:"[AST_Node?] the value returned or thrown by this statement; could be null for AST_Return"},_walk:function(visitor){return visitor._visit(this,this.value&&function(){this.value._walk(visitor)})}},AST_Jump);var AST_Return=DEFNODE("Return",null,{$documentation:"A `return` statement"},AST_Exit);var AST_Throw=DEFNODE("Throw",null,{$documentation:"A `throw` statement"},AST_Exit);var AST_LoopControl=DEFNODE("LoopControl","label",{$documentation:"Base class for loop control statements (`break` and `continue`)",$propdoc:{label:"[AST_LabelRef?] the label, or null if none"},_walk:function(visitor){return visitor._visit(this,this.label&&function(){this.label._walk(visitor)})}},AST_Jump);var AST_Break=DEFNODE("Break",null,{$documentation:"A `break` statement"},AST_LoopControl);var AST_Continue=DEFNODE("Continue",null,{$documentation:"A `continue` statement"},AST_LoopControl);var AST_If=DEFNODE("If","condition alternative",{$documentation:"A `if` statement",$propdoc:{condition:"[AST_Node] the `if` condition",alternative:"[AST_Statement?] the `else` part, or null if not present"},_walk:function(visitor){return visitor._visit(this,function(){this.condition._walk(visitor);this.body._walk(visitor);if(this.alternative)this.alternative._walk(visitor)})}},AST_StatementWithBody);var AST_Switch=DEFNODE("Switch","expression",{$documentation:"A `switch` statement",$propdoc:{expression:"[AST_Node] the `switch` “discriminant”"},_walk:function(visitor){return visitor._visit(this,function(){this.expression._walk(visitor);walk_body(this,visitor)})}},AST_Block);var AST_SwitchBranch=DEFNODE("SwitchBranch",null,{$documentation:"Base class for `switch` branches"},AST_Block);var AST_Default=DEFNODE("Default",null,{$documentation:"A `default` switch branch"},AST_SwitchBranch);var AST_Case=DEFNODE("Case","expression",{$documentation:"A `case` switch branch",$propdoc:{expression:"[AST_Node] the `case` expression"},_walk:function(visitor){return visitor._visit(this,function(){this.expression._walk(visitor);walk_body(this,visitor)})}},AST_SwitchBranch);var AST_Try=DEFNODE("Try","bcatch bfinally",{$documentation:"A `try` statement",$propdoc:{bcatch:"[AST_Catch?] the catch block, or null if not present",bfinally:"[AST_Finally?] the finally block, or null if not present"},_walk:function(visitor){return visitor._visit(this,function(){walk_body(this,visitor);if(this.bcatch)this.bcatch._walk(visitor);if(this.bfinally)this.bfinally._walk(visitor)})}},AST_Block);var AST_Catch=DEFNODE("Catch","argname",{$documentation:"A `catch` node; only makes sense as part of a `try` statement",$propdoc:{argname:"[AST_SymbolCatch] symbol for the exception"},_walk:function(visitor){return visitor._visit(this,function(){this.argname._walk(visitor);walk_body(this,visitor)})}},AST_Block);var AST_Finally=DEFNODE("Finally",null,{$documentation:"A `finally` node; only makes sense as part of a `try` statement"},AST_Block);var AST_Definitions=DEFNODE("Definitions","definitions",{$documentation:"Base class for `var` nodes (variable declarations/initializations)",$propdoc:{definitions:"[AST_VarDef*] array of variable definitions"},_walk:function(visitor){return visitor._visit(this,function(){this.definitions.forEach(function(defn){defn._walk(visitor)})})}},AST_Statement);var AST_Var=DEFNODE("Var",null,{$documentation:"A `var` statement"},AST_Definitions);var AST_VarDef=DEFNODE("VarDef","name value",{$documentation:"A variable declaration; only appears in a AST_Definitions node",$propdoc:{name:"[AST_SymbolVar] name of the variable",value:"[AST_Node?] initializer, or null of there's no initializer"},_walk:function(visitor){return visitor._visit(this,function(){this.name._walk(visitor);if(this.value)this.value._walk(visitor)})}});var AST_Call=DEFNODE("Call","expression args",{$documentation:"A function call expression",$propdoc:{expression:"[AST_Node] expression to invoke as function",args:"[AST_Node*] array of arguments"},_walk:function(visitor){return visitor._visit(this,function(){this.expression._walk(visitor);this.args.forEach(function(node){node._walk(visitor)})})}});var AST_New=DEFNODE("New",null,{$documentation:"An object instantiation.  Derives from a function call since it has exactly the same properties"},AST_Call);var AST_Sequence=DEFNODE("Sequence","expressions",{$documentation:"A sequence expression (comma-separated expressions)",$propdoc:{expressions:"[AST_Node*] array of expressions (at least two)"},_walk:function(visitor){return visitor._visit(this,function(){this.expressions.forEach(function(node){node._walk(visitor)})})}});var AST_PropAccess=DEFNODE("PropAccess","expression property",{$documentation:'Base class for property access expressions, i.e. `a.foo` or `a["foo"]`',$propdoc:{expression:"[AST_Node] the “container” expression",property:"[AST_Node|string] the property to access.  For AST_Dot this is always a plain string, while for AST_Sub it's an arbitrary AST_Node"}});var AST_Dot=DEFNODE("Dot",null,{$documentation:"A dotted property access expression",_walk:function(visitor){return visitor._visit(this,function(){this.expression._walk(visitor)})}},AST_PropAccess);var AST_Sub=DEFNODE("Sub",null,{$documentation:'Index-style property access, i.e. `a["foo"]`',_walk:function(visitor){return visitor._visit(this,function(){this.expression._walk(visitor);this.property._walk(visitor)})}},AST_PropAccess);var AST_Unary=DEFNODE("Unary","operator expression",{$documentation:"Base class for unary expressions",$propdoc:{operator:"[string] the operator",expression:"[AST_Node] expression that this unary operator applies to"},_walk:function(visitor){return visitor._visit(this,function(){this.expression._walk(visitor)})}});var AST_UnaryPrefix=DEFNODE("UnaryPrefix",null,{$documentation:"Unary prefix expression, i.e. `typeof i` or `++i`"},AST_Unary);var AST_UnaryPostfix=DEFNODE("UnaryPostfix",null,{$documentation:"Unary postfix expression, i.e. `i++`"},AST_Unary);var AST_Binary=DEFNODE("Binary","operator left right",{$documentation:"Binary expression, i.e. `a + b`",$propdoc:{left:"[AST_Node] left-hand side expression",operator:"[string] the operator",right:"[AST_Node] right-hand side expression"},_walk:function(visitor){return visitor._visit(this,function(){this.left._walk(visitor);this.right._walk(visitor)})}});var AST_Conditional=DEFNODE("Conditional","condition consequent alternative",{$documentation:"Conditional expression using the ternary operator, i.e. `a ? b : c`",$propdoc:{condition:"[AST_Node]",consequent:"[AST_Node]",alternative:"[AST_Node]"},_walk:function(visitor){return visitor._visit(this,function(){this.condition._walk(visitor);this.consequent._walk(visitor);this.alternative._walk(visitor)})}});var AST_Assign=DEFNODE("Assign",null,{$documentation:"An assignment expression — `a = b + 5`"},AST_Binary);var AST_Array=DEFNODE("Array","elements",{$documentation:"An array literal",$propdoc:{elements:"[AST_Node*] array of elements"},_walk:function(visitor){return visitor._visit(this,function(){this.elements.forEach(function(element){element._walk(visitor)})})}});var AST_Object=DEFNODE("Object","properties",{$documentation:"An object literal",$propdoc:{properties:"[AST_ObjectProperty*] array of properties"},_walk:function(visitor){return visitor._visit(this,function(){this.properties.forEach(function(prop){prop._walk(visitor)})})}});var AST_ObjectProperty=DEFNODE("ObjectProperty","key value",{$documentation:"Base class for literal object properties",$propdoc:{key:"[string|AST_SymbolAccessor] property name. For ObjectKeyVal this is a string. For getters and setters this is an AST_SymbolAccessor.",value:"[AST_Node] property value.  For getters and setters this is an AST_Accessor."},_walk:function(visitor){return visitor._visit(this,function(){this.value._walk(visitor)})}});var AST_ObjectKeyVal=DEFNODE("ObjectKeyVal","quote",{$documentation:"A key: value object property",$propdoc:{quote:"[string] the original quote character"}},AST_ObjectProperty);var AST_ObjectSetter=DEFNODE("ObjectSetter",null,{$documentation:"An object setter property"},AST_ObjectProperty);var AST_ObjectGetter=DEFNODE("ObjectGetter",null,{$documentation:"An object getter property"},AST_ObjectProperty);var AST_Symbol=DEFNODE("Symbol","scope name thedef",{$propdoc:{name:"[string] name of this symbol",scope:"[AST_Scope/S] the current scope (not necessarily the definition scope)",thedef:"[SymbolDef/S] the definition of this symbol"},$documentation:"Base class for all symbols"});var AST_SymbolAccessor=DEFNODE("SymbolAccessor",null,{$documentation:"The name of a property accessor (setter/getter function)"},AST_Symbol);var AST_SymbolDeclaration=DEFNODE("SymbolDeclaration","init",{$documentation:"A declaration symbol (symbol in var, function name or argument, symbol in catch)"},AST_Symbol);var AST_SymbolVar=DEFNODE("SymbolVar",null,{$documentation:"Symbol defining a variable"},AST_SymbolDeclaration);var AST_SymbolFunarg=DEFNODE("SymbolFunarg",null,{$documentation:"Symbol naming a function argument"},AST_SymbolVar);var AST_SymbolDefun=DEFNODE("SymbolDefun",null,{$documentation:"Symbol defining a function"},AST_SymbolDeclaration);var AST_SymbolLambda=DEFNODE("SymbolLambda",null,{$documentation:"Symbol naming a function expression"},AST_SymbolDeclaration);var AST_SymbolCatch=DEFNODE("SymbolCatch",null,{$documentation:"Symbol naming the exception in catch"},AST_SymbolDeclaration);var AST_Label=DEFNODE("Label","references",{$documentation:"Symbol naming a label (declaration)",$propdoc:{references:"[AST_LoopControl*] a list of nodes referring to this label"},initialize:function(){this.references=[];this.thedef=this}},AST_Symbol);var AST_SymbolRef=DEFNODE("SymbolRef",null,{$documentation:"Reference to some symbol (not definition/declaration)"},AST_Symbol);var AST_LabelRef=DEFNODE("LabelRef",null,{$documentation:"Reference to a label symbol"},AST_Symbol);var AST_This=DEFNODE("This",null,{$documentation:"The `this` symbol"},AST_Symbol);var AST_Constant=DEFNODE("Constant",null,{$documentation:"Base class for all constants",getValue:function(){return this.value}});var AST_String=DEFNODE("String","value quote",{$documentation:"A string literal",$propdoc:{value:"[string] the contents of this string",quote:"[string] the original quote character"}},AST_Constant);var AST_Number=DEFNODE("Number","value literal",{$documentation:"A number literal",$propdoc:{value:"[number] the numeric value",literal:"[string] numeric value as string (optional)"}},AST_Constant);var AST_RegExp=DEFNODE("RegExp","value",{$documentation:"A regexp literal",$propdoc:{value:"[RegExp] the actual regexp"}},AST_Constant);var AST_Atom=DEFNODE("Atom",null,{$documentation:"Base class for atoms"},AST_Constant);var AST_Null=DEFNODE("Null",null,{$documentation:"The `null` atom",value:null},AST_Atom);var AST_NaN=DEFNODE("NaN",null,{$documentation:"The impossible value",value:0/0},AST_Atom);var AST_Undefined=DEFNODE("Undefined",null,{$documentation:"The `undefined` value",value:function(){}()},AST_Atom);var AST_Hole=DEFNODE("Hole",null,{$documentation:"A hole in an array",value:function(){}()},AST_Atom);var AST_Infinity=DEFNODE("Infinity",null,{$documentation:"The `Infinity` value",value:1/0},AST_Atom);var AST_Boolean=DEFNODE("Boolean",null,{$documentation:"Base class for booleans"},AST_Atom);var AST_False=DEFNODE("False",null,{$documentation:"The `false` atom",value:false},AST_Boolean);var AST_True=DEFNODE("True",null,{$documentation:"The `true` atom",value:true},AST_Boolean);function TreeWalker(callback){this.visit=callback;this.stack=[];this.directives=Object.create(null)}TreeWalker.prototype={_visit:function(node,descend){this.push(node);var ret=this.visit(node,descend?function(){descend.call(node)}:noop);if(!ret&&descend){descend.call(node)}this.pop();return ret},parent:function(n){return this.stack[this.stack.length-2-(n||0)]},push:function(node){if(node instanceof AST_Lambda){this.directives=Object.create(this.directives)}else if(node instanceof AST_Directive&&!this.directives[node.value]){this.directives[node.value]=node}this.stack.push(node)},pop:function(){if(this.stack.pop()instanceof AST_Lambda){this.directives=Object.getPrototypeOf(this.directives)}},self:function(){return this.stack[this.stack.length-1]},find_parent:function(type){var stack=this.stack;for(var i=stack.length;--i>=0;){var x=stack[i];if(x instanceof type)return x}},has_directive:function(type){var dir=this.directives[type];if(dir)return dir;var node=this.stack[this.stack.length-1];if(node instanceof AST_Scope){for(var i=0;i<node.body.length;++i){var st=node.body[i];if(!(st instanceof AST_Directive))break;if(st.value==type)return st}}},loopcontrol_target:function(node){var stack=this.stack;if(node.label)for(var i=stack.length;--i>=0;){var x=stack[i];if(x instanceof AST_LabeledStatement&&x.label.name==node.label.name)return x.body}else for(var i=stack.length;--i>=0;){var x=stack[i];if(x instanceof AST_IterationStatement||node instanceof AST_Break&&x instanceof AST_Switch)return x}},in_boolean_context:function(){var self=this.self();for(var i=0,p;p=this.parent(i);i++){if(p instanceof AST_SimpleStatement||p instanceof AST_Conditional&&p.condition===self||p instanceof AST_DWLoop&&p.condition===self||p instanceof AST_For&&p.condition===self||p instanceof AST_If&&p.condition===self||p instanceof AST_UnaryPrefix&&p.operator=="!"&&p.expression===self){return true}if(p instanceof AST_Binary&&(p.operator=="&&"||p.operator=="||")||p instanceof 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RegExp("[\\u005F\\u203F\\u2040\\u2054\\uFE33\\uFE34\\uFE4D-\\uFE4F\\uFF3F]")};function is_letter(code){return code>=97&&code<=122||code>=65&&code<=90||code>=170&&UNICODE.letter.test(String.fromCharCode(code))}function is_surrogate_pair_head(code){if(typeof code=="string")code=code.charCodeAt(0);return code>=55296&&code<=56319}function is_surrogate_pair_tail(code){if(typeof code=="string")code=code.charCodeAt(0);return code>=56320&&code<=57343}function is_digit(code){return code>=48&&code<=57}function is_alphanumeric_char(code){return is_digit(code)||is_letter(code)}function is_unicode_digit(code){return UNICODE.digit.test(String.fromCharCode(code))}function is_unicode_combining_mark(ch){return UNICODE.non_spacing_mark.test(ch)||UNICODE.space_combining_mark.test(ch)}function is_unicode_connector_punctuation(ch){return UNICODE.connector_punctuation.test(ch)}function is_identifier(name){return!RESERVED_WORDS[name]&&/^[a-z_$][a-z0-9_$]*$/i.test(name)}function is_identifier_start(code){return code==36||code==95||is_letter(code)}function is_identifier_char(ch){var code=ch.charCodeAt(0);return is_identifier_start(code)||is_digit(code)||code==8204||code==8205||is_unicode_combining_mark(ch)||is_unicode_connector_punctuation(ch)||is_unicode_digit(code)}function is_identifier_string(str){return/^[a-z_$][a-z0-9_$]*$/i.test(str)}function parse_js_number(num){if(RE_HEX_NUMBER.test(num)){return parseInt(num.substr(2),16)}else if(RE_OCT_NUMBER.test(num)){return parseInt(num.substr(1),8)}else{var val=parseFloat(num);if(val==num)return val}}function JS_Parse_Error(message,filename,line,col,pos){this.message=message;this.filename=filename;this.line=line;this.col=col;this.pos=pos}JS_Parse_Error.prototype=Object.create(Error.prototype);JS_Parse_Error.prototype.constructor=JS_Parse_Error;JS_Parse_Error.prototype.name="SyntaxError";configure_error_stack(JS_Parse_Error);function js_error(message,filename,line,col,pos){throw new JS_Parse_Error(message,filename,line,col,pos)}function is_token(token,type,val){return token.type==type&&(val==null||token.value==val)}var EX_EOF={};function tokenizer($TEXT,filename,html5_comments,shebang){var S={text:$TEXT,filename:filename,pos:0,tokpos:0,line:1,tokline:0,col:0,tokcol:0,newline_before:false,regex_allowed:false,comments_before:[],directives:{},directive_stack:[]};function peek(){return S.text.charAt(S.pos)}function next(signal_eof,in_string){var ch=S.text.charAt(S.pos++);if(signal_eof&&!ch)throw EX_EOF;if(NEWLINE_CHARS[ch]){S.newline_before=S.newline_before||!in_string;++S.line;S.col=0;if(!in_string&&ch=="\r"&&peek()=="\n"){++S.pos;ch="\n"}}else{++S.col}return ch}function forward(i){while(i-- >0)next()}function looking_at(str){return S.text.substr(S.pos,str.length)==str}function find_eol(){var text=S.text;for(var i=S.pos,n=S.text.length;i<n;++i){var ch=text[i];if(NEWLINE_CHARS[ch])return i}return-1}function find(what,signal_eof){var pos=S.text.indexOf(what,S.pos);if(signal_eof&&pos==-1)throw EX_EOF;return pos}function start_token(){S.tokline=S.line;S.tokcol=S.col;S.tokpos=S.pos}var prev_was_dot=false;function token(type,value,is_comment){S.regex_allowed=type=="operator"&&!UNARY_POSTFIX[value]||type=="keyword"&&KEYWORDS_BEFORE_EXPRESSION[value]||type=="punc"&&PUNC_BEFORE_EXPRESSION[value];if(type=="punc"&&value=="."){prev_was_dot=true}else if(!is_comment){prev_was_dot=false}var ret={type:type,value:value,line:S.tokline,col:S.tokcol,pos:S.tokpos,endline:S.line,endcol:S.col,endpos:S.pos,nlb:S.newline_before,file:filename};if(/^(?:num|string|regexp)$/i.test(type)){ret.raw=$TEXT.substring(ret.pos,ret.endpos)}if(!is_comment){ret.comments_before=S.comments_before;ret.comments_after=S.comments_before=[]}S.newline_before=false;return new AST_Token(ret)}function skip_whitespace(){while(WHITESPACE_CHARS[peek()])next()}function read_while(pred){var ret="",ch,i=0;while((ch=peek())&&pred(ch,i++))ret+=next();return ret}function parse_error(err){js_error(err,filename,S.tokline,S.tokcol,S.tokpos)}function read_num(prefix){var has_e=false,after_e=false,has_x=false,has_dot=prefix==".";var num=read_while(function(ch,i){var code=ch.charCodeAt(0);switch(code){case 120:case 88:return has_x?false:has_x=true;case 101:case 69:return has_x?true:has_e?false:has_e=after_e=true;case 45:return after_e||i==0&&!prefix;case 43:return after_e;case after_e=false,46:return!has_dot&&!has_x&&!has_e?has_dot=true:false}return is_alphanumeric_char(code)});if(prefix)num=prefix+num;if(RE_OCT_NUMBER.test(num)&&next_token.has_directive("use strict")){parse_error("Legacy octal literals are not allowed in strict mode")}var valid=parse_js_number(num);if(!isNaN(valid)){return token("num",valid)}else{parse_error("Invalid syntax: "+num)}}function read_escaped_char(in_string){var ch=next(true,in_string);switch(ch.charCodeAt(0)){case 110:return"\n";case 114:return"\r";case 116:return"\t";case 98:return"\b";case 118:return"\v";case 102:return"\f";case 120:return String.fromCharCode(hex_bytes(2));case 117:return String.fromCharCode(hex_bytes(4));case 10:return"";case 13:if(peek()=="\n"){next(true,in_string);return""}}if(ch>="0"&&ch<="7")return read_octal_escape_sequence(ch);return ch}function read_octal_escape_sequence(ch){var p=peek();if(p>="0"&&p<="7"){ch+=next(true);if(ch[0]<="3"&&(p=peek())>="0"&&p<="7")ch+=next(true)}if(ch==="0")return"\0";if(ch.length>0&&next_token.has_directive("use strict"))parse_error("Legacy octal escape sequences are not allowed in strict mode");return String.fromCharCode(parseInt(ch,8))}function hex_bytes(n){var num=0;for(;n>0;--n){var digit=parseInt(next(true),16);if(isNaN(digit))parse_error("Invalid hex-character pattern in string");num=num<<4|digit}return num}var read_string=with_eof_error("Unterminated string constant",function(quote_char){var quote=next(),ret="";for(;;){var ch=next(true,true);if(ch=="\\")ch=read_escaped_char(true);else if(NEWLINE_CHARS[ch])parse_error("Unterminated string constant");else if(ch==quote)break;ret+=ch}var tok=token("string",ret);tok.quote=quote_char;return tok});function skip_line_comment(type){var regex_allowed=S.regex_allowed;var i=find_eol(),ret;if(i==-1){ret=S.text.substr(S.pos);S.pos=S.text.length}else{ret=S.text.substring(S.pos,i);S.pos=i}S.col=S.tokcol+(S.pos-S.tokpos);S.comments_before.push(token(type,ret,true));S.regex_allowed=regex_allowed;return next_token}var skip_multiline_comment=with_eof_error("Unterminated multiline comment",function(){var regex_allowed=S.regex_allowed;var i=find("*/",true);var text=S.text.substring(S.pos,i).replace(/\r\n|\r|\u2028|\u2029/g,"\n");forward(text.length+2);S.comments_before.push(token("comment2",text,true));S.regex_allowed=regex_allowed;return next_token});function read_name(){var backslash=false,name="",ch,escaped=false,hex;while((ch=peek())!=null){if(!backslash){if(ch=="\\")escaped=backslash=true,next();else if(is_identifier_char(ch))name+=next();else break}else{if(ch!="u")parse_error("Expecting UnicodeEscapeSequence -- uXXXX");ch=read_escaped_char();if(!is_identifier_char(ch))parse_error("Unicode char: "+ch.charCodeAt(0)+" is not valid in identifier");name+=ch;backslash=false}}if(KEYWORDS[name]&&escaped){hex=name.charCodeAt(0).toString(16).toUpperCase();name="\\u"+"0000".substr(hex.length)+hex+name.slice(1)}return name}var read_regexp=with_eof_error("Unterminated regular expression",function(source){var prev_backslash=false,ch,in_class=false;while(ch=next(true))if(NEWLINE_CHARS[ch]){parse_error("Unexpected line terminator")}else if(prev_backslash){source+="\\"+ch;prev_backslash=false}else if(ch=="["){in_class=true;source+=ch}else if(ch=="]"&&in_class){in_class=false;source+=ch}else if(ch=="/"&&!in_class){break}else if(ch=="\\"){prev_backslash=true}else{source+=ch}var mods=read_name();try{var regexp=new RegExp(source,mods);regexp.raw_source=source;return token("regexp",regexp)}catch(e){parse_error(e.message)}});function read_operator(prefix){function grow(op){if(!peek())return op;var bigger=op+peek();if(OPERATORS[bigger]){next();return grow(bigger)}else{return op}}return token("operator",grow(prefix||next()))}function handle_slash(){next();switch(peek()){case"/":next();return skip_line_comment("comment1");case"*":next();return skip_multiline_comment()}return S.regex_allowed?read_regexp(""):read_operator("/")}function handle_dot(){next();return is_digit(peek().charCodeAt(0))?read_num("."):token("punc",".")}function read_word(){var word=read_name();if(prev_was_dot)return token("name",word);return KEYWORDS_ATOM[word]?token("atom",word):!KEYWORDS[word]?token("name",word):OPERATORS[word]?token("operator",word):token("keyword",word)}function with_eof_error(eof_error,cont){return function(x){try{return cont(x)}catch(ex){if(ex===EX_EOF)parse_error(eof_error);else throw ex}}}function next_token(force_regexp){if(force_regexp!=null)return read_regexp(force_regexp);if(shebang&&S.pos==0&&looking_at("#!")){start_token();forward(2);skip_line_comment("comment5")}for(;;){skip_whitespace();start_token();if(html5_comments){if(looking_at("\x3c!--")){forward(4);skip_line_comment("comment3");continue}if(looking_at("--\x3e")&&S.newline_before){forward(3);skip_line_comment("comment4");continue}}var ch=peek();if(!ch)return token("eof");var code=ch.charCodeAt(0);switch(code){case 34:case 39:return read_string(ch);case 46:return handle_dot();case 47:{var tok=handle_slash();if(tok===next_token)continue;return tok}}if(is_digit(code))return read_num();if(PUNC_CHARS[ch])return token("punc",next());if(OPERATOR_CHARS[ch])return read_operator();if(code==92||is_identifier_start(code))return read_word();break}parse_error("Unexpected character '"+ch+"'")}next_token.context=function(nc){if(nc)S=nc;return S};next_token.add_directive=function(directive){S.directive_stack[S.directive_stack.length-1].push(directive);if(S.directives[directive]===undefined){S.directives[directive]=1}else{S.directives[directive]++}};next_token.push_directives_stack=function(){S.directive_stack.push([])};next_token.pop_directives_stack=function(){var directives=S.directive_stack[S.directive_stack.length-1];for(var i=0;i<directives.length;i++){S.directives[directives[i]]--}S.directive_stack.pop()};next_token.has_directive=function(directive){return S.directives[directive]>0};return next_token}var UNARY_PREFIX=makePredicate(["typeof","void","delete","--","++","!","~","-","+"]);var UNARY_POSTFIX=makePredicate(["--","++"]);var ASSIGNMENT=makePredicate(["=","+=","-=","/=","*=","%=",">>=","<<=",">>>=","|=","^=","&="]);var PRECEDENCE=function(a,ret){for(var i=0;i<a.length;++i){var b=a[i];for(var j=0;j<b.length;++j){ret[b[j]]=i+1}}return ret}([["||"],["&&"],["|"],["^"],["&"],["==","===","!=","!=="],["<",">","<=",">=","in","instanceof"],[">>","<<",">>>"],["+","-"],["*","/","%"]],{});var ATOMIC_START_TOKEN=makePredicate(["atom","num","string","regexp","name"]);function parse($TEXT,options){options=defaults(options,{bare_returns:false,expression:false,filename:null,html5_comments:true,shebang:true,strict:false,toplevel:null},true);var S={input:typeof $TEXT=="string"?tokenizer($TEXT,options.filename,options.html5_comments,options.shebang):$TEXT,token:null,prev:null,peeked:null,in_function:0,in_directives:true,in_loop:0,labels:[]};S.token=next();function is(type,value){return is_token(S.token,type,value)}function peek(){return S.peeked||(S.peeked=S.input())}function next(){S.prev=S.token;if(S.peeked){S.token=S.peeked;S.peeked=null}else{S.token=S.input()}S.in_directives=S.in_directives&&(S.token.type=="string"||is("punc",";"));return S.token}function prev(){return S.prev}function croak(msg,line,col,pos){var ctx=S.input.context();js_error(msg,ctx.filename,line!=null?line:ctx.tokline,col!=null?col:ctx.tokcol,pos!=null?pos:ctx.tokpos)}function token_error(token,msg){croak(msg,token.line,token.col)}function unexpected(token){if(token==null)token=S.token;token_error(token,"Unexpected token: "+token.type+" ("+token.value+")")}function expect_token(type,val){if(is(type,val)){return next()}token_error(S.token,"Unexpected token "+S.token.type+" «"+S.token.value+"»"+", expected "+type+" «"+val+"»")}function expect(punc){return expect_token("punc",punc)}function has_newline_before(token){return token.nlb||!all(token.comments_before,function(comment){return!comment.nlb})}function can_insert_semicolon(){return!options.strict&&(is("eof")||is("punc","}")||has_newline_before(S.token))}function semicolon(optional){if(is("punc",";"))next();else if(!optional&&!can_insert_semicolon())unexpected()}function parenthesised(){expect("(");var exp=expression(true);expect(")");return exp}function embed_tokens(parser){return function(){var start=S.token;var expr=parser.apply(null,arguments);var end=prev();expr.start=start;expr.end=end;return expr}}function handle_regexp(){if(is("operator","/")||is("operator","/=")){S.peeked=null;S.token=S.input(S.token.value.substr(1))}}var statement=embed_tokens(function(strict_defun){handle_regexp();switch(S.token.type){case"string":if(S.in_directives){var token=peek();if(S.token.raw.indexOf("\\")==-1&&(is_token(token,"punc",";")||is_token(token,"punc","}")||has_newline_before(token)||is_token(token,"eof"))){S.input.add_directive(S.token.value)}else{S.in_directives=false}}var dir=S.in_directives,stat=simple_statement();return dir?new AST_Directive(stat.body):stat;case"num":case"regexp":case"operator":case"atom":return simple_statement();case"name":return is_token(peek(),"punc",":")?labeled_statement():simple_statement();case"punc":switch(S.token.value){case"{":return new AST_BlockStatement({start:S.token,body:block_(),end:prev()});case"[":case"(":return simple_statement();case";":S.in_directives=false;next();return new AST_EmptyStatement;default:unexpected()}case"keyword":switch(S.token.value){case"break":next();return break_cont(AST_Break);case"continue":next();return break_cont(AST_Continue);case"debugger":next();semicolon();return new AST_Debugger;case"do":next();var body=in_loop(statement);expect_token("keyword","while");var condition=parenthesised();semicolon(true);return new AST_Do({body:body,condition:condition});case"while":next();return new AST_While({condition:parenthesised(),body:in_loop(statement)});case"for":next();return for_();case"function":if(!strict_defun&&S.input.has_directive("use strict")){croak("In strict mode code, functions can only be declared at top level or immediately within another function.")}next();return function_(AST_Defun);case"if":next();return if_();case"return":if(S.in_function==0&&!options.bare_returns)croak("'return' outside of function");next();var value=null;if(is("punc",";")){next()}else if(!can_insert_semicolon()){value=expression(true);semicolon()}return new AST_Return({value:value});case"switch":next();return new AST_Switch({expression:parenthesised(),body:in_loop(switch_body_)});case"throw":next();if(has_newline_before(S.token))croak("Illegal newline after 'throw'");var value=expression(true);semicolon();return new AST_Throw({value:value});case"try":next();return try_();case"var":next();var node=var_();semicolon();return node;case"with":if(S.input.has_directive("use strict")){croak("Strict mode may not include a with statement")}next();return new AST_With({expression:parenthesised(),body:statement()})}}unexpected()});function labeled_statement(){var label=as_symbol(AST_Label);if(!all(S.labels,function(l){return l.name!=label.name})){croak("Label "+label.name+" defined twice")}expect(":");S.labels.push(label);var stat=statement();S.labels.pop();if(!(stat instanceof AST_IterationStatement)){label.references.forEach(function(ref){if(ref instanceof AST_Continue){ref=ref.label.start;croak("Continue label `"+label.name+"` refers to non-IterationStatement.",ref.line,ref.col,ref.pos)}})}return new AST_LabeledStatement({body:stat,label:label})}function simple_statement(tmp){return new AST_SimpleStatement({body:(tmp=expression(true),semicolon(),tmp)})}function break_cont(type){var label=null,ldef;if(!can_insert_semicolon()){label=as_symbol(AST_LabelRef,true)}if(label!=null){ldef=find_if(function(l){return l.name==label.name},S.labels);if(!ldef)croak("Undefined label "+label.name);label.thedef=ldef}else if(S.in_loop==0)croak(type.TYPE+" not inside a loop or switch");semicolon();var stat=new type({label:label});if(ldef)ldef.references.push(stat);return stat}function for_(){expect("(");var init=null;if(!is("punc",";")){init=is("keyword","var")?(next(),var_(true)):expression(true,true);if(is("operator","in")){if(init instanceof AST_Var){if(init.definitions.length>1)croak("Only one variable declaration allowed in for..in loop",init.start.line,init.start.col,init.start.pos)}else if(!is_assignable(init)){croak("Invalid left-hand side in for..in loop",init.start.line,init.start.col,init.start.pos)}next();return for_in(init)}}return regular_for(init)}function regular_for(init){expect(";");var test=is("punc",";")?null:expression(true);expect(";");var step=is("punc",")")?null:expression(true);expect(")");return new AST_For({init:init,condition:test,step:step,body:in_loop(statement)})}function for_in(init){var obj=expression(true);expect(")");return new AST_ForIn({init:init,object:obj,body:in_loop(statement)})}var function_=function(ctor){var in_statement=ctor===AST_Defun;var name=is("name")?as_symbol(in_statement?AST_SymbolDefun:AST_SymbolLambda):null;if(in_statement&&!name)unexpected();if(name&&ctor!==AST_Accessor&&!(name instanceof AST_SymbolDeclaration))unexpected(prev());expect("(");var argnames=[];for(var first=true;!is("punc",")");){if(first)first=false;else expect(",");argnames.push(as_symbol(AST_SymbolFunarg))}next();var loop=S.in_loop;var labels=S.labels;++S.in_function;S.in_directives=true;S.input.push_directives_stack();S.in_loop=0;S.labels=[];var body=block_(true);if(S.input.has_directive("use strict")){if(name)strict_verify_symbol(name);argnames.forEach(strict_verify_symbol)}S.input.pop_directives_stack();--S.in_function;S.in_loop=loop;S.labels=labels;return new ctor({name:name,argnames:argnames,body:body})};function if_(){var cond=parenthesised(),body=statement(),belse=null;if(is("keyword","else")){next();belse=statement()}return new AST_If({condition:cond,body:body,alternative:belse})}function block_(strict_defun){expect("{");var a=[];while(!is("punc","}")){if(is("eof"))unexpected();a.push(statement(strict_defun))}next();return a}function switch_body_(){expect("{");var a=[],cur=null,branch=null,tmp;while(!is("punc","}")){if(is("eof"))unexpected();if(is("keyword","case")){if(branch)branch.end=prev();cur=[];branch=new AST_Case({start:(tmp=S.token,next(),tmp),expression:expression(true),body:cur});a.push(branch);expect(":")}else if(is("keyword","default")){if(branch)branch.end=prev();cur=[];branch=new AST_Default({start:(tmp=S.token,next(),expect(":"),tmp),body:cur});a.push(branch)}else{if(!cur)unexpected();cur.push(statement())}}if(branch)branch.end=prev();next();return a}function try_(){var body=block_(),bcatch=null,bfinally=null;if(is("keyword","catch")){var start=S.token;next();expect("(");var name=as_symbol(AST_SymbolCatch);expect(")");bcatch=new AST_Catch({start:start,argname:name,body:block_(),end:prev()})}if(is("keyword","finally")){var start=S.token;next();bfinally=new AST_Finally({start:start,body:block_(),end:prev()})}if(!bcatch&&!bfinally)croak("Missing catch/finally blocks");return new AST_Try({body:body,bcatch:bcatch,bfinally:bfinally})}function vardefs(no_in){var a=[];for(;;){a.push(new AST_VarDef({start:S.token,name:as_symbol(AST_SymbolVar),value:is("operator","=")?(next(),expression(false,no_in)):null,end:prev()}));if(!is("punc",","))break;next()}return a}var var_=function(no_in){return new AST_Var({start:prev(),definitions:vardefs(no_in),end:prev()})};var new_=function(allow_calls){var start=S.token;expect_token("operator","new");var newexp=expr_atom(false),args;if(is("punc","(")){next();args=expr_list(")")}else{args=[]}var call=new AST_New({start:start,expression:newexp,args:args,end:prev()});mark_pure(call);return subscripts(call,allow_calls)};function as_atom_node(){var tok=S.token,ret;switch(tok.type){case"name":ret=_make_symbol(AST_SymbolRef);break;case"num":ret=new AST_Number({start:tok,end:tok,value:tok.value});break;case"string":ret=new AST_String({start:tok,end:tok,value:tok.value,quote:tok.quote});break;case"regexp":ret=new AST_RegExp({start:tok,end:tok,value:tok.value});break;case"atom":switch(tok.value){case"false":ret=new AST_False({start:tok,end:tok});break;case"true":ret=new AST_True({start:tok,end:tok});break;case"null":ret=new AST_Null({start:tok,end:tok});break}break}next();return ret}var expr_atom=function(allow_calls){if(is("operator","new")){return new_(allow_calls)}var start=S.token;if(is("punc")){switch(start.value){case"(":next();var ex=expression(true);var len=start.comments_before.length;[].unshift.apply(ex.start.comments_before,start.comments_before);start.comments_before=ex.start.comments_before;start.comments_before_length=len;if(len==0&&start.comments_before.length>0){var comment=start.comments_before[0];if(!comment.nlb){comment.nlb=start.nlb;start.nlb=false}}start.comments_after=ex.start.comments_after;ex.start=start;expect(")");var end=prev();end.comments_before=ex.end.comments_before;[].push.apply(ex.end.comments_after,end.comments_after);end.comments_after=ex.end.comments_after;ex.end=end;if(ex instanceof AST_Call)mark_pure(ex);return subscripts(ex,allow_calls);case"[":return subscripts(array_(),allow_calls);case"{":return subscripts(object_(),allow_calls)}unexpected()}if(is("keyword","function")){next();var func=function_(AST_Function);func.start=start;func.end=prev();return subscripts(func,allow_calls)}if(ATOMIC_START_TOKEN[S.token.type]){return subscripts(as_atom_node(),allow_calls)}unexpected()};function expr_list(closing,allow_trailing_comma,allow_empty){var first=true,a=[];while(!is("punc",closing)){if(first)first=false;else expect(",");if(allow_trailing_comma&&is("punc",closing))break;if(is("punc",",")&&allow_empty){a.push(new AST_Hole({start:S.token,end:S.token}))}else{a.push(expression(false))}}next();return a}var array_=embed_tokens(function(){expect("[");return new AST_Array({elements:expr_list("]",!options.strict,true)})});var create_accessor=embed_tokens(function(){return function_(AST_Accessor)});var object_=embed_tokens(function(){expect("{");var first=true,a=[];while(!is("punc","}")){if(first)first=false;else expect(",");if(!options.strict&&is("punc","}"))break;var start=S.token;var type=start.type;var name=as_property_name();if(type=="name"&&!is("punc",":")){var key=new AST_SymbolAccessor({start:S.token,name:""+as_property_name(),end:prev()});if(name=="get"){a.push(new AST_ObjectGetter({start:start,key:key,value:create_accessor(),end:prev()}));continue}if(name=="set"){a.push(new AST_ObjectSetter({start:start,key:key,value:create_accessor(),end:prev()}));continue}}expect(":");a.push(new AST_ObjectKeyVal({start:start,quote:start.quote,key:""+name,value:expression(false),end:prev()}))}next();return new AST_Object({properties:a})});function as_property_name(){var tmp=S.token;switch(tmp.type){case"operator":if(!KEYWORDS[tmp.value])unexpected();case"num":case"string":case"name":case"keyword":case"atom":next();return tmp.value;default:unexpected()}}function as_name(){var tmp=S.token;if(tmp.type!="name")unexpected();next();return tmp.value}function _make_symbol(type){var name=S.token.value;return new(name=="this"?AST_This:type)({name:String(name),start:S.token,end:S.token})}function strict_verify_symbol(sym){if(sym.name=="arguments"||sym.name=="eval")croak("Unexpected "+sym.name+" in strict mode",sym.start.line,sym.start.col,sym.start.pos)}function as_symbol(type,noerror){if(!is("name")){if(!noerror)croak("Name expected");return null}var sym=_make_symbol(type);if(S.input.has_directive("use strict")&&sym instanceof AST_SymbolDeclaration){strict_verify_symbol(sym)}next();return sym}function mark_pure(call){var start=call.start;var comments=start.comments_before;var i=HOP(start,"comments_before_length")?start.comments_before_length:comments.length;while(--i>=0){var comment=comments[i];if(/[@#]__PURE__/.test(comment.value)){call.pure=comment;break}}}var subscripts=function(expr,allow_calls){var start=expr.start;if(is("punc",".")){next();return subscripts(new AST_Dot({start:start,expression:expr,property:as_name(),end:prev()}),allow_calls)}if(is("punc","[")){next();var prop=expression(true);expect("]");return subscripts(new AST_Sub({start:start,expression:expr,property:prop,end:prev()}),allow_calls)}if(allow_calls&&is("punc","(")){next();var call=new AST_Call({start:start,expression:expr,args:expr_list(")"),end:prev()});mark_pure(call);return subscripts(call,true)}return expr};var maybe_unary=function(allow_calls){var start=S.token;if(is("operator")&&UNARY_PREFIX[start.value]){next();handle_regexp();var ex=make_unary(AST_UnaryPrefix,start,maybe_unary(allow_calls));ex.start=start;ex.end=prev();return ex}var val=expr_atom(allow_calls);while(is("operator")&&UNARY_POSTFIX[S.token.value]&&!has_newline_before(S.token)){val=make_unary(AST_UnaryPostfix,S.token,val);val.start=start;val.end=S.token;next()}return val};function make_unary(ctor,token,expr){var op=token.value;switch(op){case"++":case"--":if(!is_assignable(expr))croak("Invalid use of "+op+" operator",token.line,token.col,token.pos);break;case"delete":if(expr instanceof AST_SymbolRef&&S.input.has_directive("use strict"))croak("Calling delete on expression not allowed in strict mode",expr.start.line,expr.start.col,expr.start.pos);break}return new ctor({operator:op,expression:expr})}var expr_op=function(left,min_prec,no_in){var op=is("operator")?S.token.value:null;if(op=="in"&&no_in)op=null;var prec=op!=null?PRECEDENCE[op]:null;if(prec!=null&&prec>min_prec){next();var right=expr_op(maybe_unary(true),prec,no_in);return expr_op(new AST_Binary({start:left.start,left:left,operator:op,right:right,end:right.end}),min_prec,no_in)}return left};function expr_ops(no_in){return expr_op(maybe_unary(true),0,no_in)}var maybe_conditional=function(no_in){var start=S.token;var expr=expr_ops(no_in);if(is("operator","?")){next();var yes=expression(false);expect(":");return new AST_Conditional({start:start,condition:expr,consequent:yes,alternative:expression(false,no_in),end:prev()})}return expr};function is_assignable(expr){return expr instanceof AST_PropAccess||expr instanceof AST_SymbolRef}var maybe_assign=function(no_in){var start=S.token;var left=maybe_conditional(no_in),val=S.token.value;if(is("operator")&&ASSIGNMENT[val]){if(is_assignable(left)){next();return new AST_Assign({start:start,left:left,operator:val,right:maybe_assign(no_in),end:prev()})}croak("Invalid assignment")}return left};var expression=function(commas,no_in){var start=S.token;var exprs=[];while(true){exprs.push(maybe_assign(no_in));if(!commas||!is("punc",","))break;next();commas=true}return exprs.length==1?exprs[0]:new AST_Sequence({start:start,expressions:exprs,end:peek()})};function in_loop(cont){++S.in_loop;var ret=cont();--S.in_loop;return ret}if(options.expression){return expression(true)}return function(){var start=S.token;var body=[];S.input.push_directives_stack();while(!is("eof"))body.push(statement(true));S.input.pop_directives_stack();var end=prev();var toplevel=options.toplevel;if(toplevel){toplevel.body=toplevel.body.concat(body);toplevel.end=end}else{toplevel=new AST_Toplevel({start:start,body:body,end:end})}return toplevel}()}"use strict";function TreeTransformer(before,after){TreeWalker.call(this);this.before=before;this.after=after}TreeTransformer.prototype=new TreeWalker;(function(DEF){function do_list(list,tw){return MAP(list,function(node){return node.transform(tw,true)})}DEF(AST_Node,noop);DEF(AST_LabeledStatement,function(self,tw){self.label=self.label.transform(tw);self.body=self.body.transform(tw)});DEF(AST_SimpleStatement,function(self,tw){self.body=self.body.transform(tw)});DEF(AST_Block,function(self,tw){self.body=do_list(self.body,tw)});DEF(AST_Do,function(self,tw){self.body=self.body.transform(tw);self.condition=self.condition.transform(tw)});DEF(AST_While,function(self,tw){self.condition=self.condition.transform(tw);self.body=self.body.transform(tw)});DEF(AST_For,function(self,tw){if(self.init)self.init=self.init.transform(tw);if(self.condition)self.condition=self.condition.transform(tw);if(self.step)self.step=self.step.transform(tw);self.body=self.body.transform(tw)});DEF(AST_ForIn,function(self,tw){self.init=self.init.transform(tw);self.object=self.object.transform(tw);self.body=self.body.transform(tw)});DEF(AST_With,function(self,tw){self.expression=self.expression.transform(tw);self.body=self.body.transform(tw)});DEF(AST_Exit,function(self,tw){if(self.value)self.value=self.value.transform(tw)});DEF(AST_LoopControl,function(self,tw){if(self.label)self.label=self.label.transform(tw)});DEF(AST_If,function(self,tw){self.condition=self.condition.transform(tw);self.body=self.body.transform(tw);if(self.alternative)self.alternative=self.alternative.transform(tw)});DEF(AST_Switch,function(self,tw){self.expression=self.expression.transform(tw);self.body=do_list(self.body,tw)});DEF(AST_Case,function(self,tw){self.expression=self.expression.transform(tw);self.body=do_list(self.body,tw)});DEF(AST_Try,function(self,tw){self.body=do_list(self.body,tw);if(self.bcatch)self.bcatch=self.bcatch.transform(tw);if(self.bfinally)self.bfinally=self.bfinally.transform(tw)});DEF(AST_Catch,function(self,tw){self.argname=self.argname.transform(tw);self.body=do_list(self.body,tw)});DEF(AST_Definitions,function(self,tw){self.definitions=do_list(self.definitions,tw)});DEF(AST_VarDef,function(self,tw){self.name=self.name.transform(tw);if(self.value)self.value=self.value.transform(tw)});DEF(AST_Lambda,function(self,tw){if(self.name)self.name=self.name.transform(tw);self.argnames=do_list(self.argnames,tw);self.body=do_list(self.body,tw)});DEF(AST_Call,function(self,tw){self.expression=self.expression.transform(tw);self.args=do_list(self.args,tw)});DEF(AST_Sequence,function(self,tw){self.expressions=do_list(self.expressions,tw)});DEF(AST_Dot,function(self,tw){self.expression=self.expression.transform(tw)});DEF(AST_Sub,function(self,tw){self.expression=self.expression.transform(tw);self.property=self.property.transform(tw)});DEF(AST_Unary,function(self,tw){self.expression=self.expression.transform(tw)});DEF(AST_Binary,function(self,tw){self.left=self.left.transform(tw);self.right=self.right.transform(tw)});DEF(AST_Conditional,function(self,tw){self.condition=self.condition.transform(tw);self.consequent=self.consequent.transform(tw);self.alternative=self.alternative.transform(tw)});DEF(AST_Array,function(self,tw){self.elements=do_list(self.elements,tw)});DEF(AST_Object,function(self,tw){self.properties=do_list(self.properties,tw)});DEF(AST_ObjectProperty,function(self,tw){self.value=self.value.transform(tw)})})(function(node,descend){node.DEFMETHOD("transform",function(tw,in_list){var x,y;tw.push(this);if(tw.before)x=tw.before(this,descend,in_list);if(typeof x==="undefined"){x=this;descend(x,tw);if(tw.after){y=tw.after(x,in_list);if(typeof y!=="undefined")x=y}}tw.pop();return x})});"use strict";function SymbolDef(scope,orig,init){this.name=orig.name;this.orig=[orig];this.init=init;this.eliminated=0;this.scope=scope;this.references=[];this.replaced=0;this.global=false;this.mangled_name=null;this.undeclared=false;this.id=SymbolDef.next_id++}SymbolDef.next_id=1;SymbolDef.prototype={unmangleable:function(options){if(!options)options={};return this.global&&!options.toplevel||this.undeclared||!options.eval&&this.scope.pinned()||options.keep_fnames&&(this.orig[0]instanceof AST_SymbolLambda||this.orig[0]instanceof AST_SymbolDefun)},mangle:function(options){var cache=options.cache&&options.cache.props;if(this.global&&cache&&cache.has(this.name)){this.mangled_name=cache.get(this.name)}else if(!this.mangled_name&&!this.unmangleable(options)){var def;if(def=this.redefined()){this.mangled_name=def.mangled_name||def.name}else{this.mangled_name=next_mangled_name(this.scope,options,this)}if(this.global&&cache){cache.set(this.name,this.mangled_name)}}},redefined:function(){return this.defun&&this.defun.variables.get(this.name)}};AST_Toplevel.DEFMETHOD("figure_out_scope",function(options){options=defaults(options,{cache:null,ie8:false});var self=this;var scope=self.parent_scope=null;var defun=null;var tw=new TreeWalker(function(node,descend){if(node instanceof AST_Catch){var save_scope=scope;scope=new AST_Scope(node);scope.init_scope_vars(save_scope);descend();scope=save_scope;return true}if(node instanceof AST_Scope){node.init_scope_vars(scope);var save_scope=scope;var save_defun=defun;defun=scope=node;descend();scope=save_scope;defun=save_defun;return true}if(node instanceof AST_With){for(var s=scope;s;s=s.parent_scope)s.uses_with=true;return}if(node instanceof AST_Symbol){node.scope=scope}if(node instanceof AST_Label){node.thedef=node;node.references=[]}if(node instanceof AST_SymbolDefun){(node.scope=defun.parent_scope.resolve()).def_function(node,defun)}else if(node instanceof AST_SymbolLambda){var def=defun.def_function(node,node.name=="arguments"?undefined:defun);if(options.ie8)def.defun=defun.parent_scope.resolve()}else if(node instanceof AST_SymbolVar){defun.def_variable(node,node.TYPE=="SymbolVar"?null:undefined);if(defun!==scope){node.mark_enclosed(options);var def=scope.find_variable(node);if(node.thedef!==def){node.thedef=def}node.reference(options)}}else if(node instanceof AST_SymbolCatch){scope.def_variable(node).defun=defun}});self.walk(tw);self.globals=new Dictionary;var tw=new TreeWalker(function(node){if(node instanceof AST_LoopControl){if(node.label)node.label.thedef.references.push(node);return true}if(node instanceof AST_SymbolRef){var name=node.name;if(name=="eval"&&tw.parent()instanceof AST_Call){for(var s=node.scope;s&&!s.uses_eval;s=s.parent_scope){s.uses_eval=true}}var sym=node.scope.find_variable(name);if(!sym){sym=self.def_global(node)}else if(sym.scope instanceof AST_Lambda&&name=="arguments"){sym.scope.uses_arguments=true}node.thedef=sym;node.reference(options);return true}if(node instanceof AST_SymbolCatch){var def=node.definition().redefined();if(def)for(var s=node.scope;s;s=s.parent_scope){push_uniq(s.enclosed,def);if(s===def.scope)break}return true}});self.walk(tw);if(options.ie8)self.walk(new TreeWalker(function(node){if(node instanceof AST_SymbolCatch){redefine(node,node.thedef.defun);return true}if(node instanceof AST_SymbolLambda){var def=node.thedef;if(def.orig.length==1){redefine(node,node.scope.parent_scope);node.thedef.init=def.init}return true}}));function redefine(node,scope){var name=node.name;var refs=node.thedef.references;var def=scope.find_variable(name)||self.globals.get(name)||scope.def_variable(node);refs.forEach(function(ref){ref.thedef=def;ref.reference(options)});node.thedef=def;node.reference(options)}});AST_Toplevel.DEFMETHOD("def_global",function(node){var globals=this.globals,name=node.name;if(globals.has(name)){return globals.get(name)}else{var g=new SymbolDef(this,node);g.undeclared=true;g.global=true;globals.set(name,g);return g}});AST_Scope.DEFMETHOD("init_scope_vars",function(parent_scope){this.variables=new Dictionary;this.functions=new Dictionary;this.uses_with=false;this.uses_eval=false;this.parent_scope=parent_scope;this.enclosed=[];this.cname=-1});AST_Lambda.DEFMETHOD("init_scope_vars",function(){AST_Scope.prototype.init_scope_vars.apply(this,arguments);this.uses_arguments=false;this.def_variable(new AST_SymbolFunarg({name:"arguments",start:this.start,end:this.end}))});AST_Symbol.DEFMETHOD("mark_enclosed",function(options){var def=this.definition();for(var s=this.scope;s;s=s.parent_scope){push_uniq(s.enclosed,def);if(options.keep_fnames){s.functions.each(function(d){push_uniq(def.scope.enclosed,d)})}if(s===def.scope)break}});AST_Symbol.DEFMETHOD("reference",function(options){this.definition().references.push(this);this.mark_enclosed(options)});AST_Scope.DEFMETHOD("find_variable",function(name){if(name instanceof AST_Symbol)name=name.name;return this.variables.get(name)||this.parent_scope&&this.parent_scope.find_variable(name)});AST_Scope.DEFMETHOD("def_function",function(symbol,init){var def=this.def_variable(symbol,init);if(!def.init||def.init instanceof AST_Defun)def.init=init;this.functions.set(symbol.name,def);return def});AST_Scope.DEFMETHOD("def_variable",function(symbol,init){var def=this.variables.get(symbol.name);if(def){def.orig.push(symbol);if(def.init&&(def.scope!==symbol.scope||def.init instanceof AST_Function)){def.init=init}}else{def=new SymbolDef(this,symbol,init);this.variables.set(symbol.name,def);def.global=!this.parent_scope}return symbol.thedef=def});AST_Lambda.DEFMETHOD("resolve",return_this);AST_Scope.DEFMETHOD("resolve",function(){return this.parent_scope});AST_Toplevel.DEFMETHOD("resolve",return_this);function names_in_use(scope,options){var names=scope.names_in_use;if(!names){scope.names_in_use=names=Object.create(scope.mangled_names||null);scope.cname_holes=[];scope.enclosed.forEach(function(def){if(def.unmangleable(options))names[def.name]=true})}return names}function next_mangled_name(scope,options,def){var in_use=names_in_use(scope,options);var holes=scope.cname_holes;var names=Object.create(null);var scopes=[scope];def.references.forEach(function(sym){var scope=sym.scope;do{if(scopes.indexOf(scope)<0){for(var name in names_in_use(scope,options)){names[name]=true}scopes.push(scope)}else break}while(scope=scope.parent_scope)});var name;for(var i=0,len=holes.length;i<len;i++){name=base54(holes[i]);if(names[name])continue;holes.splice(i,1);scope.names_in_use[name]=true;return name}while(true){name=base54(++scope.cname);if(in_use[name]||!is_identifier(name)||options.reserved.has[name])continue;if(!names[name])break;holes.push(scope.cname)}scope.names_in_use[name]=true;return name}AST_Symbol.DEFMETHOD("unmangleable",function(options){var def=this.definition();return!def||def.unmangleable(options)});AST_Label.DEFMETHOD("unmangleable",return_false);AST_Symbol.DEFMETHOD("unreferenced",function(){return!this.definition().references.length&&!this.scope.pinned()});AST_Symbol.DEFMETHOD("definition",function(){return this.thedef});AST_Symbol.DEFMETHOD("global",function(){return this.definition().global});function _default_mangler_options(options){options=defaults(options,{eval:false,ie8:false,keep_fnames:false,reserved:[],toplevel:false});if(!Array.isArray(options.reserved))options.reserved=[];push_uniq(options.reserved,"arguments");options.reserved.has=makePredicate(options.reserved);return options}AST_Toplevel.DEFMETHOD("mangle_names",function(options){options=_default_mangler_options(options);var lname=-1;if(options.cache&&options.cache.props){var mangled_names=this.mangled_names=Object.create(null);options.cache.props.each(function(mangled_name){mangled_names[mangled_name]=true})}var redefined=[];var tw=new TreeWalker(function(node,descend){if(node instanceof AST_LabeledStatement){var save_nesting=lname;descend();lname=save_nesting;return true}if(node instanceof AST_Scope){descend();if(options.cache&&node instanceof AST_Toplevel){node.globals.each(mangle)}node.variables.each(mangle);return true}if(node instanceof AST_Label){var name;do{name=base54(++lname)}while(!is_identifier(name));node.mangled_name=name;return true}if(!options.ie8&&node instanceof AST_Catch){var def=node.argname.definition();var redef=def.redefined();if(redef){redefined.push(def);reference(node.argname);def.references.forEach(reference)}descend();if(!redef)mangle(def);return true}function reference(sym){sym.thedef=redef;sym.reference(options);sym.thedef=def}});this.walk(tw);redefined.forEach(mangle);function mangle(def){if(options.reserved.has[def.name])return;def.mangle(options)}});AST_Toplevel.DEFMETHOD("find_colliding_names",function(options){var cache=options.cache&&options.cache.props;var avoid=Object.create(null);options.reserved.forEach(to_avoid);this.globals.each(add_def);this.walk(new TreeWalker(function(node){if(node instanceof AST_Scope)node.variables.each(add_def);if(node instanceof AST_SymbolCatch)add_def(node.definition())}));return avoid;function to_avoid(name){avoid[name]=true}function add_def(def){var name=def.name;if(def.global&&cache&&cache.has(name))name=cache.get(name);else if(!def.unmangleable(options))return;to_avoid(name)}});AST_Toplevel.DEFMETHOD("expand_names",function(options){base54.reset();base54.sort();options=_default_mangler_options(options);var avoid=this.find_colliding_names(options);var cname=0;this.globals.each(rename);this.walk(new TreeWalker(function(node){if(node instanceof AST_Scope)node.variables.each(rename);if(node instanceof AST_SymbolCatch)rename(node.definition())}));function next_name(){var name;do{name=base54(cname++)}while(avoid[name]||!is_identifier(name));return name}function rename(def){if(def.global&&options.cache)return;if(def.unmangleable(options))return;if(options.reserved.has[def.name])return;var d=def.redefined();def.name=d?d.name:next_name();def.orig.forEach(function(sym){sym.name=def.name});def.references.forEach(function(sym){sym.name=def.name})}});AST_Node.DEFMETHOD("tail_node",return_this);AST_Sequence.DEFMETHOD("tail_node",function(){return this.expressions[this.expressions.length-1]});AST_Toplevel.DEFMETHOD("compute_char_frequency",function(options){options=_default_mangler_options(options);base54.reset();try{AST_Node.prototype.print=function(stream,force_parens){this._print(stream,force_parens);if(this instanceof AST_Symbol&&!this.unmangleable(options)){base54.consider(this.name,-1)}else if(options.properties){if(this instanceof AST_Dot){base54.consider(this.property,-1)}else if(this instanceof AST_Sub){skip_string(this.property)}}};base54.consider(this.print_to_string(),1)}finally{AST_Node.prototype.print=AST_Node.prototype._print}base54.sort();function skip_string(node){if(node instanceof AST_String){base54.consider(node.value,-1)}else if(node instanceof AST_Conditional){skip_string(node.consequent);skip_string(node.alternative)}else if(node instanceof AST_Sequence){skip_string(node.tail_node())}}});var base54=function(){var freq=Object.create(null);function init(chars){var array=[];for(var i=0,len=chars.length;i<len;i++){var ch=chars[i];array.push(ch);freq[ch]=-.01*i}return array}var digits=init("0123456789");var leading=init("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$_");var chars,frequency;function reset(){frequency=Object.create(freq)}base54.consider=function(str,delta){for(var i=str.length;--i>=0;){frequency[str[i]]+=delta}};function compare(a,b){return frequency[b]-frequency[a]}base54.sort=function(){chars=leading.sort(compare).concat(digits.sort(compare))};base54.reset=reset;reset();function base54(num){var ret="",base=54;num++;do{num--;ret+=chars[num%base];num=Math.floor(num/base);base=64}while(num>0);return ret}return base54}();"use strict";var EXPECT_DIRECTIVE=/^$|[;{][\s\n]*$/;function is_some_comments(comment){return comment.type=="comment2"&&/@preserve|@license|@cc_on/i.test(comment.value)}function OutputStream(options){var readonly=!options;options=defaults(options,{ascii_only:false,beautify:false,braces:false,comments:false,ie8:false,indent_level:4,indent_start:0,inline_script:true,keep_quoted_props:false,max_line_len:false,preamble:null,preserve_line:false,quote_keys:false,quote_style:0,semicolons:true,shebang:true,source_map:null,webkit:false,width:80,wrap_iife:false},true);var comment_filter=return_false;if(options.comments){var comments=options.comments;if(typeof options.comments==="string"&&/^\/.*\/[a-zA-Z]*$/.test(options.comments)){var regex_pos=options.comments.lastIndexOf("/");comments=new RegExp(options.comments.substr(1,regex_pos-1),options.comments.substr(regex_pos+1))}if(comments instanceof RegExp){comment_filter=function(comment){return comment.type!="comment5"&&comments.test(comment.value)}}else if(typeof comments==="function"){comment_filter=function(comment){return comment.type!="comment5"&&comments(this,comment)}}else if(comments==="some"){comment_filter=is_some_comments}else{comment_filter=return_true}}var indentation=0;var current_col=0;var current_line=1;var current_pos=0;var OUTPUT="";var to_utf8=options.ascii_only?function(str,identifier){return str.replace(/[\u0000-\u001f\u007f-\uffff]/g,function(ch){var code=ch.charCodeAt(0).toString(16);if(code.length<=2&&!identifier){while(code.length<2)code="0"+code;return"\\x"+code}else{while(code.length<4)code="0"+code;return"\\u"+code}})}:function(str){var s="";for(var i=0,len=str.length;i<len;i++){if(is_surrogate_pair_head(str[i])&&!is_surrogate_pair_tail(str[i+1])||is_surrogate_pair_tail(str[i])&&!is_surrogate_pair_head(str[i-1])){s+="\\u"+str.charCodeAt(i).toString(16)}else{s+=str[i]}}return s};function make_string(str,quote){var dq=0,sq=0;str=str.replace(/[\\\b\f\n\r\v\t\x22\x27\u2028\u2029\0\ufeff]/g,function(s,i){switch(s){case'"':++dq;return'"';case"'":++sq;return"'";case"\\":return"\\\\";case"\n":return"\\n";case"\r":return"\\r";case"\t":return"\\t";case"\b":return"\\b";case"\f":return"\\f";case"\v":return options.ie8?"\\x0B":"\\v";case"\u2028":return"\\u2028";case"\u2029":return"\\u2029";case"\ufeff":return"\\ufeff";case"\0":return/[0-9]/.test(str.charAt(i+1))?"\\x00":"\\0"}return s});function quote_single(){return"'"+str.replace(/\x27/g,"\\'")+"'"}function quote_double(){return'"'+str.replace(/\x22/g,'\\"')+'"'}str=to_utf8(str);switch(options.quote_style){case 1:return quote_single();case 2:return quote_double();case 3:return quote=="'"?quote_single():quote_double();default:return dq>sq?quote_single():quote_double()}}function encode_string(str,quote){var ret=make_string(str,quote);if(options.inline_script){ret=ret.replace(/<\x2f(script)([>\/\t\n\f\r ])/gi,"<\\/$1$2");ret=ret.replace(/\x3c!--/g,"\\x3c!--");ret=ret.replace(/--\x3e/g,"--\\x3e")}return ret}function make_name(name){name=name.toString();name=to_utf8(name,true);return name}function make_indent(back){return repeat_string(" ",options.indent_start+indentation-back*options.indent_level)}var has_parens=false;var line_end=0;var line_fixed=true;var might_need_space=false;var might_need_semicolon=false;var need_newline_indented=false;var need_space=false;var newline_insert=-1;var last="";var mapping_token,mapping_name,mappings=options.source_map&&[];var adjust_mappings=mappings?function(line,col){mappings.forEach(function(mapping){mapping.line+=line;mapping.col+=col})}:noop;var flush_mappings=mappings?function(){mappings.forEach(function(mapping){try{options.source_map.add(mapping.token.file,mapping.line,mapping.col,mapping.token.line,mapping.token.col,!mapping.name&&mapping.token.type=="name"?mapping.token.value:mapping.name)}catch(ex){AST_Node.warn("Couldn't figure out mapping for {file}:{line},{col} → {cline},{ccol} [{name}]",{file:mapping.token.file,line:mapping.token.line,col:mapping.token.col,cline:mapping.line,ccol:mapping.col,name:mapping.name||""})}});mappings=[]}:noop;function insert_newlines(count){var index=OUTPUT.lastIndexOf("\n");if(line_end<index)line_end=index;var left=OUTPUT.slice(0,line_end);var right=OUTPUT.slice(line_end);adjust_mappings(count,right.length-current_col);current_line+=count;current_pos+=count;current_col=right.length;OUTPUT=left;while(count--)OUTPUT+="\n";OUTPUT+=right}var fix_line=options.max_line_len?function(){if(line_fixed){if(current_col>options.max_line_len){AST_Node.warn("Output exceeds {max_line_len} characters",options)}return}if(current_col>options.max_line_len)insert_newlines(1);line_fixed=true;flush_mappings()}:noop;var requireSemicolonChars=makePredicate("( [ + * / - , .");function print(str){str=String(str);var ch=str.charAt(0);if(need_newline_indented&&ch){need_newline_indented=false;if(ch!="\n"){print("\n");indent()}}if(need_space&&ch){need_space=false;if(!/[\s;})]/.test(ch)){space()}}newline_insert=-1;var prev=last.charAt(last.length-1);if(might_need_semicolon){might_need_semicolon=false;if(prev==":"&&ch=="}"||(!ch||";}".indexOf(ch)<0)&&prev!=";"){if(options.semicolons||requireSemicolonChars[ch]){OUTPUT+=";";current_col++;current_pos++}else{fix_line();OUTPUT+="\n";current_pos++;current_line++;current_col=0;if(/^\s+$/.test(str)){might_need_semicolon=true}}if(!options.beautify)might_need_space=false}}if(might_need_space){if(is_identifier_char(prev)&&(is_identifier_char(ch)||ch=="\\")||ch=="/"&&ch==prev||(ch=="+"||ch=="-")&&ch==last){OUTPUT+=" ";current_col++;current_pos++}might_need_space=false}if(mapping_token){mappings.push({token:mapping_token,name:mapping_name,line:current_line,col:current_col});mapping_token=false;if(line_fixed)flush_mappings()}OUTPUT+=str;has_parens=str[str.length-1]=="(";current_pos+=str.length;var a=str.split(/\r?\n/),n=a.length-1;current_line+=n;current_col+=a[0].length;if(n>0){fix_line();current_col=a[n].length}last=str}var space=options.beautify?function(){print(" ")}:function(){might_need_space=true};var indent=options.beautify?function(half){if(options.beautify){print(make_indent(half?.5:0))}}:noop;var with_indent=options.beautify?function(col,cont){if(col===true)col=next_indent();var save_indentation=indentation;indentation=col;var ret=cont();indentation=save_indentation;return ret}:function(col,cont){return cont()};var may_add_newline=options.max_line_len||options.preserve_line?function(){fix_line();line_end=OUTPUT.length;line_fixed=false}:noop;var newline=options.beautify?function(){if(newline_insert<0)return print("\n");if(OUTPUT[newline_insert]!="\n"){OUTPUT=OUTPUT.slice(0,newline_insert)+"\n"+OUTPUT.slice(newline_insert);current_pos++;current_line++}newline_insert++}:may_add_newline;var semicolon=options.beautify?function(){print(";")}:function(){might_need_semicolon=true};function force_semicolon(){might_need_semicolon=false;print(";")}function next_indent(){return indentation+options.indent_level}function with_block(cont){var ret;print("{");newline();with_indent(next_indent(),function(){ret=cont()});indent();print("}");return ret}function with_parens(cont){print("(");may_add_newline();var ret=cont();may_add_newline();print(")");return ret}function with_square(cont){print("[");may_add_newline();var ret=cont();may_add_newline();print("]");return ret}function comma(){may_add_newline();print(",");may_add_newline();space()}function colon(){print(":");space()}var add_mapping=mappings?function(token,name){mapping_token=token;mapping_name=name}:noop;function get(){if(!line_fixed)fix_line();return OUTPUT}function has_nlb(){var index=OUTPUT.lastIndexOf("\n");return/^ *$/.test(OUTPUT.slice(index+1))}function prepend_comments(node){var self=this;var start=node.start;if(!start)return;if(start.comments_before&&start.comments_before._dumped===self)return;var comments=start.comments_before;if(!comments){comments=start.comments_before=[]}comments._dumped=self;if(node instanceof AST_Exit&&node.value){var tw=new TreeWalker(function(node){var parent=tw.parent();if(parent instanceof AST_Exit||parent instanceof AST_Binary&&parent.left===node||parent.TYPE=="Call"&&parent.expression===node||parent instanceof AST_Conditional&&parent.condition===node||parent instanceof AST_Dot&&parent.expression===node||parent instanceof AST_Sequence&&parent.expressions[0]===node||parent instanceof AST_Sub&&parent.expression===node||parent instanceof AST_UnaryPostfix){var text=node.start.comments_before;if(text&&text._dumped!==self){text._dumped=self;comments=comments.concat(text)}}else{return true}});tw.push(node);node.value.walk(tw)}if(current_pos==0){if(comments.length>0&&options.shebang&&comments[0].type=="comment5"){print("#!"+comments.shift().value+"\n");indent()}var preamble=options.preamble;if(preamble){print(preamble.replace(/\r\n?|[\n\u2028\u2029]|\s*$/g,"\n"))}}comments=comments.filter(comment_filter,node);if(comments.length==0)return;var last_nlb=has_nlb();comments.forEach(function(c,i){if(!last_nlb){if(c.nlb){print("\n");indent();last_nlb=true}else if(i>0){space()}}if(/comment[134]/.test(c.type)){print("//"+c.value.replace(/[@#]__PURE__/g," ")+"\n");indent();last_nlb=true}else if(c.type=="comment2"){print("/*"+c.value.replace(/[@#]__PURE__/g," ")+"*/");last_nlb=false}});if(!last_nlb){if(start.nlb){print("\n");indent()}else{space()}}}function append_comments(node,tail){var self=this;var token=node.end;if(!token)return;var comments=token[tail?"comments_before":"comments_after"];if(!comments||comments._dumped===self)return;if(!(node instanceof AST_Statement||all(comments,function(c){return!/comment[134]/.test(c.type)})))return;comments._dumped=self;var insert=OUTPUT.length;comments.filter(comment_filter,node).forEach(function(c,i){need_space=false;if(need_newline_indented){print("\n");indent();need_newline_indented=false}else if(c.nlb&&(i>0||!has_nlb())){print("\n");indent()}else if(i>0||!tail){space()}if(/comment[134]/.test(c.type)){print("//"+c.value.replace(/[@#]__PURE__/g," "));need_newline_indented=true}else if(c.type=="comment2"){print("/*"+c.value.replace(/[@#]__PURE__/g," ")+"*/");need_space=true}});if(OUTPUT.length>insert)newline_insert=insert}var stack=[];return{get:get,toString:get,indent:indent,indentation:function(){return indentation},current_width:function(){return current_col-indentation},should_break:function(){return options.width&&this.current_width()>=options.width},has_parens:function(){return has_parens},newline:newline,print:print,space:space,comma:comma,colon:colon,last:function(){return last},semicolon:semicolon,force_semicolon:force_semicolon,to_utf8:to_utf8,print_name:function(name){print(make_name(name))},print_string:function(str,quote,escape_directive){var encoded=encode_string(str,quote);if(escape_directive===true&&encoded.indexOf("\\")===-1){if(!EXPECT_DIRECTIVE.test(OUTPUT)){force_semicolon()}force_semicolon()}print(encoded)},encode_string:encode_string,next_indent:next_indent,with_indent:with_indent,with_block:with_block,with_parens:with_parens,with_square:with_square,add_mapping:add_mapping,option:function(opt){return options[opt]},prepend_comments:readonly?noop:prepend_comments,append_comments:readonly||comment_filter===return_false?noop:append_comments,line:function(){return current_line},col:function(){return current_col},pos:function(){return current_pos},push_node:function(node){stack.push(node)},pop_node:options.preserve_line?function(){var node=stack.pop();if(node.start&&node.start.line>current_line){insert_newlines(node.start.line-current_line)}}:function(){stack.pop()},parent:function(n){return stack[stack.length-2-(n||0)]}}}(function(){function DEFPRINT(nodetype,generator){nodetype.DEFMETHOD("_codegen",generator)}var in_directive=false;var active_scope=null;var use_asm=null;AST_Node.DEFMETHOD("print",function(stream,force_parens){var self=this,generator=self._codegen;if(self instanceof AST_Scope){active_scope=self}else if(!use_asm&&self instanceof AST_Directive&&self.value=="use asm"){use_asm=active_scope}function doit(){stream.prepend_comments(self);self.add_source_map(stream);generator(self,stream);stream.append_comments(self)}stream.push_node(self);if(force_parens||self.needs_parens(stream)){stream.with_parens(doit)}else{doit()}stream.pop_node();if(self===use_asm){use_asm=null}});AST_Node.DEFMETHOD("_print",AST_Node.prototype.print);AST_Node.DEFMETHOD("print_to_string",function(options){var s=OutputStream(options);this.print(s);return s.get()});function PARENS(nodetype,func){if(Array.isArray(nodetype)){nodetype.forEach(function(nodetype){PARENS(nodetype,func)})}else{nodetype.DEFMETHOD("needs_parens",func)}}PARENS(AST_Node,return_false);PARENS(AST_Function,function(output){if(!output.has_parens()&&first_in_statement(output))return true;if(output.option("webkit")){var p=output.parent();if(p instanceof AST_PropAccess&&p.expression===this)return true}if(output.option("wrap_iife")){var p=output.parent();if(p instanceof AST_Call&&p.expression===this)return true}});PARENS(AST_Object,function(output){return!output.has_parens()&&first_in_statement(output)});PARENS(AST_Unary,function(output){var p=output.parent();return p instanceof AST_PropAccess&&p.expression===this||p instanceof AST_Call&&p.expression===this});PARENS(AST_Sequence,function(output){var p=output.parent();return p instanceof AST_Call||p instanceof AST_Unary||p instanceof AST_Binary||p instanceof AST_VarDef||p instanceof AST_PropAccess||p instanceof AST_Array||p instanceof AST_ObjectProperty||p instanceof AST_Conditional});PARENS(AST_Binary,function(output){var p=output.parent();if(p instanceof AST_Call&&p.expression===this)return true;if(p instanceof AST_Unary)return true;if(p instanceof AST_PropAccess&&p.expression===this)return true;if(p instanceof AST_Binary){var po=p.operator,pp=PRECEDENCE[po];var so=this.operator,sp=PRECEDENCE[so];if(pp>sp||pp==sp&&this===p.right){return true}}});PARENS(AST_PropAccess,function(output){var p=output.parent();if(p instanceof AST_New&&p.expression===this){var parens=false;this.walk(new TreeWalker(function(node){if(parens||node instanceof AST_Scope)return true;if(node instanceof AST_Call){parens=true;return true}}));return parens}});PARENS(AST_Call,function(output){var p=output.parent();if(p instanceof AST_New&&p.expression===this)return true;if(output.option("webkit")){var g=output.parent(1);return this.expression instanceof AST_Function&&p instanceof AST_PropAccess&&p.expression===this&&g instanceof AST_Assign&&g.left===p}});PARENS(AST_New,function(output){var p=output.parent();if(!need_constructor_parens(this,output)&&(p instanceof AST_PropAccess||p instanceof AST_Call&&p.expression===this))return true});PARENS(AST_Number,function(output){var p=output.parent();if(p instanceof AST_PropAccess&&p.expression===this){var value=this.getValue();if(value<0||/^0/.test(make_num(value))){return true}}});PARENS([AST_Assign,AST_Conditional],function(output){var p=output.parent();if(p instanceof AST_Unary)return true;if(p instanceof AST_Binary&&!(p instanceof AST_Assign))return true;if(p instanceof AST_Call&&p.expression===this)return true;if(p instanceof AST_Conditional&&p.condition===this)return true;if(p instanceof AST_PropAccess&&p.expression===this)return true});DEFPRINT(AST_Directive,function(self,output){output.print_string(self.value,self.quote);output.semicolon()});DEFPRINT(AST_Debugger,function(self,output){output.print("debugger");output.semicolon()});function display_body(body,is_toplevel,output,allow_directives){var last=body.length-1;in_directive=allow_directives;body.forEach(function(stmt,i){if(in_directive===true&&!(stmt instanceof AST_Directive||stmt instanceof AST_EmptyStatement||stmt instanceof AST_SimpleStatement&&stmt.body instanceof AST_String)){in_directive=false}if(!(stmt instanceof AST_EmptyStatement)){output.indent();stmt.print(output);if(!(i==last&&is_toplevel)){output.newline();if(is_toplevel)output.newline()}}if(in_directive===true&&stmt instanceof AST_SimpleStatement&&stmt.body instanceof AST_String){in_directive=false}});in_directive=false}AST_StatementWithBody.DEFMETHOD("_do_print_body",function(output){force_statement(this.body,output)});DEFPRINT(AST_Statement,function(self,output){self.body.print(output);output.semicolon()});DEFPRINT(AST_Toplevel,function(self,output){display_body(self.body,true,output,true);output.print("")});DEFPRINT(AST_LabeledStatement,function(self,output){self.label.print(output);output.colon();self.body.print(output)});DEFPRINT(AST_SimpleStatement,function(self,output){self.body.print(output);output.semicolon()});function print_braced_empty(self,output){output.print("{");output.with_indent(output.next_indent(),function(){output.append_comments(self,true)});output.print("}")}function print_braced(self,output,allow_directives){if(self.body.length>0){output.with_block(function(){display_body(self.body,false,output,allow_directives)})}else print_braced_empty(self,output)}DEFPRINT(AST_BlockStatement,function(self,output){print_braced(self,output)});DEFPRINT(AST_EmptyStatement,function(self,output){output.semicolon()});DEFPRINT(AST_Do,function(self,output){output.print("do");output.space();make_block(self.body,output);output.space();output.print("while");output.space();output.with_parens(function(){self.condition.print(output)});output.semicolon()});DEFPRINT(AST_While,function(self,output){output.print("while");output.space();output.with_parens(function(){self.condition.print(output)});output.space();self._do_print_body(output)});DEFPRINT(AST_For,function(self,output){output.print("for");output.space();output.with_parens(function(){if(self.init){if(self.init instanceof AST_Definitions){self.init.print(output)}else{parenthesize_for_noin(self.init,output,true)}output.print(";");output.space()}else{output.print(";")}if(self.condition){self.condition.print(output);output.print(";");output.space()}else{output.print(";")}if(self.step){self.step.print(output)}});output.space();self._do_print_body(output)});DEFPRINT(AST_ForIn,function(self,output){output.print("for");output.space();output.with_parens(function(){self.init.print(output);output.space();output.print("in");output.space();self.object.print(output)});output.space();self._do_print_body(output)});DEFPRINT(AST_With,function(self,output){output.print("with");output.space();output.with_parens(function(){self.expression.print(output)});output.space();self._do_print_body(output)});AST_Lambda.DEFMETHOD("_do_print",function(output,nokeyword){var self=this;if(!nokeyword){output.print("function")}if(self.name){output.space();self.name.print(output)}output.with_parens(function(){self.argnames.forEach(function(arg,i){if(i)output.comma();arg.print(output)})});output.space();print_braced(self,output,true)});DEFPRINT(AST_Lambda,function(self,output){self._do_print(output)});function print_jump(output,kind,target){output.print(kind);if(target){output.space();target.print(output)}output.semicolon()}DEFPRINT(AST_Return,function(self,output){print_jump(output,"return",self.value)});DEFPRINT(AST_Throw,function(self,output){print_jump(output,"throw",self.value)});DEFPRINT(AST_Break,function(self,output){print_jump(output,"break",self.label)});DEFPRINT(AST_Continue,function(self,output){print_jump(output,"continue",self.label)});function make_then(self,output){var b=self.body;if(output.option("braces")||output.option("ie8")&&b instanceof AST_Do)return make_block(b,output);if(!b)return output.force_semicolon();while(true){if(b instanceof AST_If){if(!b.alternative){make_block(self.body,output);return}b=b.alternative}else if(b instanceof AST_StatementWithBody){b=b.body}else break}force_statement(self.body,output)}DEFPRINT(AST_If,function(self,output){output.print("if");output.space();output.with_parens(function(){self.condition.print(output)});output.space();if(self.alternative){make_then(self,output);output.space();output.print("else");output.space();if(self.alternative instanceof AST_If)self.alternative.print(output);else force_statement(self.alternative,output)}else{self._do_print_body(output)}});DEFPRINT(AST_Switch,function(self,output){output.print("switch");output.space();output.with_parens(function(){self.expression.print(output)});output.space();var last=self.body.length-1;if(last<0)print_braced_empty(self,output);else output.with_block(function(){self.body.forEach(function(branch,i){output.indent(true);branch.print(output);if(i<last&&branch.body.length>0)output.newline()})})});AST_SwitchBranch.DEFMETHOD("_do_print_body",function(output){output.newline();this.body.forEach(function(stmt){output.indent();stmt.print(output);output.newline()})});DEFPRINT(AST_Default,function(self,output){output.print("default:");self._do_print_body(output)});DEFPRINT(AST_Case,function(self,output){output.print("case");output.space();self.expression.print(output);output.print(":");self._do_print_body(output)});DEFPRINT(AST_Try,function(self,output){output.print("try");output.space();print_braced(self,output);if(self.bcatch){output.space();self.bcatch.print(output)}if(self.bfinally){output.space();self.bfinally.print(output)}});DEFPRINT(AST_Catch,function(self,output){output.print("catch");output.space();output.with_parens(function(){self.argname.print(output)});output.space();print_braced(self,output)});DEFPRINT(AST_Finally,function(self,output){output.print("finally");output.space();print_braced(self,output)});DEFPRINT(AST_Var,function(self,output){output.print("var");output.space();self.definitions.forEach(function(def,i){if(i)output.comma();def.print(output)});var p=output.parent();if(p&&p.init!==self||!(p instanceof AST_For||p instanceof AST_ForIn))output.semicolon()});function parenthesize_for_noin(node,output,noin){var parens=false;if(noin)node.walk(new TreeWalker(function(node){if(parens||node instanceof AST_Scope)return true;if(node instanceof AST_Binary&&node.operator=="in"){parens=true;return true}}));node.print(output,parens)}DEFPRINT(AST_VarDef,function(self,output){self.name.print(output);if(self.value){output.space();output.print("=");output.space();var p=output.parent(1);var noin=p instanceof AST_For||p instanceof AST_ForIn;parenthesize_for_noin(self.value,output,noin)}});DEFPRINT(AST_Call,function(self,output){self.expression.print(output);if(self instanceof AST_New&&!need_constructor_parens(self,output))return;if(self.expression instanceof AST_Call||self.expression instanceof AST_Lambda){output.add_mapping(self.start)}output.with_parens(function(){self.args.forEach(function(expr,i){if(i)output.comma();expr.print(output)})})});DEFPRINT(AST_New,function(self,output){output.print("new");output.space();AST_Call.prototype._codegen(self,output)});DEFPRINT(AST_Sequence,function(self,output){self.expressions.forEach(function(node,index){if(index>0){output.comma();if(output.should_break()){output.newline();output.indent()}}node.print(output)})});DEFPRINT(AST_Dot,function(self,output){var expr=self.expression;expr.print(output);var prop=self.property;if(output.option("ie8")&&RESERVED_WORDS[prop]){output.print("[");output.add_mapping(self.end);output.print_string(prop);output.print("]")}else{if(expr instanceof AST_Number&&expr.getValue()>=0){if(!/[xa-f.)]/i.test(output.last())){output.print(".")}}output.print(".");output.add_mapping(self.end);output.print_name(prop)}});DEFPRINT(AST_Sub,function(self,output){self.expression.print(output);output.print("[");self.property.print(output);output.print("]")});DEFPRINT(AST_UnaryPrefix,function(self,output){var op=self.operator;output.print(op);if(/^[a-z]/i.test(op)||/[+-]$/.test(op)&&self.expression instanceof AST_UnaryPrefix&&/^[+-]/.test(self.expression.operator)){output.space()}self.expression.print(output)});DEFPRINT(AST_UnaryPostfix,function(self,output){self.expression.print(output);output.print(self.operator)});DEFPRINT(AST_Binary,function(self,output){var op=self.operator;self.left.print(output);if(op[0]==">"&&self.left instanceof AST_UnaryPostfix&&self.left.operator=="--"){output.print(" ")}else{output.space()}output.print(op);if((op=="<"||op=="<<")&&self.right instanceof AST_UnaryPrefix&&self.right.operator=="!"&&self.right.expression instanceof AST_UnaryPrefix&&self.right.expression.operator=="--"){output.print(" ")}else{output.space()}self.right.print(output)});DEFPRINT(AST_Conditional,function(self,output){self.condition.print(output);output.space();output.print("?");output.space();self.consequent.print(output);output.space();output.colon();self.alternative.print(output)});DEFPRINT(AST_Array,function(self,output){output.with_square(function(){var a=self.elements,len=a.length;if(len>0)output.space();a.forEach(function(exp,i){if(i)output.comma();exp.print(output);if(i===len-1&&exp instanceof AST_Hole)output.comma()});if(len>0)output.space()})});DEFPRINT(AST_Object,function(self,output){if(self.properties.length>0)output.with_block(function(){self.properties.forEach(function(prop,i){if(i){output.print(",");output.newline()}output.indent();prop.print(output)});output.newline()});else print_braced_empty(self,output)});function print_property_name(key,quote,output){if(output.option("quote_keys")){output.print_string(key)}else if(""+ +key==key&&key>=0){output.print(make_num(key))}else if(RESERVED_WORDS[key]?!output.option("ie8"):is_identifier_string(key)){if(quote&&output.option("keep_quoted_props")){output.print_string(key,quote)}else{output.print_name(key)}}else{output.print_string(key,quote)}}DEFPRINT(AST_ObjectKeyVal,function(self,output){print_property_name(self.key,self.quote,output);output.colon();self.value.print(output)});AST_ObjectProperty.DEFMETHOD("_print_getter_setter",function(type,output){output.print(type);output.space();print_property_name(this.key.name,this.quote,output);this.value._do_print(output,true)});DEFPRINT(AST_ObjectSetter,function(self,output){self._print_getter_setter("set",output)});DEFPRINT(AST_ObjectGetter,function(self,output){self._print_getter_setter("get",output)});DEFPRINT(AST_Symbol,function(self,output){var def=self.definition();output.print_name(def?def.mangled_name||def.name:self.name)});DEFPRINT(AST_Hole,noop);DEFPRINT(AST_This,function(self,output){output.print("this")});DEFPRINT(AST_Constant,function(self,output){output.print(self.getValue())});DEFPRINT(AST_String,function(self,output){output.print_string(self.getValue(),self.quote,in_directive)});DEFPRINT(AST_Number,function(self,output){if(use_asm&&self.start&&self.start.raw!=null){output.print(self.start.raw)}else{output.print(make_num(self.getValue()))}});DEFPRINT(AST_RegExp,function(self,output){var regexp=self.getValue();var str=regexp.toString();if(regexp.raw_source){str="/"+regexp.raw_source+str.slice(str.lastIndexOf("/"))}str=output.to_utf8(str);output.print(str);var p=output.parent();if(p instanceof AST_Binary&&/^in/.test(p.operator)&&p.left===self)output.print(" ")});function force_statement(stat,output){if(output.option("braces")){make_block(stat,output)}else{if(!stat||stat instanceof AST_EmptyStatement)output.force_semicolon();else stat.print(output)}}function need_constructor_parens(self,output){if(self.args.length>0)return true;return output.option("beautify")}function best_of(a){var best=a[0],len=best.length;for(var i=1;i<a.length;++i){if(a[i].length<len){best=a[i];len=best.length}}return best}function make_num(num){var str=num.toString(10).replace(/^0\./,".").replace("e+","e");var candidates=[str];if(Math.floor(num)===num){if(num<0){candidates.push("-0x"+(-num).toString(16).toLowerCase())}else{candidates.push("0x"+num.toString(16).toLowerCase())}}var match,len,digits;if(match=/^\.0+/.exec(str)){len=match[0].length;digits=str.slice(len);candidates.push(digits+"e-"+(digits.length+len-1))}else if(match=/0+$/.exec(str)){len=match[0].length;candidates.push(str.slice(0,-len)+"e"+len)}else if(match=/^(\d)\.(\d+)e(-?\d+)$/.exec(str)){candidates.push(match[1]+match[2]+"e"+(match[3]-match[2].length))}return best_of(candidates)}function make_block(stmt,output){if(!stmt||stmt instanceof AST_EmptyStatement)output.print("{}");else if(stmt instanceof AST_BlockStatement)stmt.print(output);else output.with_block(function(){output.indent();stmt.print(output);output.newline()})}function DEFMAP(nodetype,generator){nodetype.forEach(function(nodetype){nodetype.DEFMETHOD("add_source_map",generator)})}DEFMAP([AST_Node,AST_LabeledStatement,AST_Toplevel],noop);DEFMAP([AST_Array,AST_BlockStatement,AST_Catch,AST_Constant,AST_Debugger,AST_Definitions,AST_Directive,AST_Finally,AST_Jump,AST_Lambda,AST_New,AST_Object,AST_StatementWithBody,AST_Symbol,AST_Switch,AST_SwitchBranch,AST_Try],function(output){output.add_mapping(this.start)});DEFMAP([AST_ObjectGetter,AST_ObjectSetter],function(output){output.add_mapping(this.start,this.key.name)});DEFMAP([AST_ObjectProperty],function(output){output.add_mapping(this.start,this.key)})})();"use strict";function Compressor(options,false_by_default){if(!(this instanceof Compressor))return new Compressor(options,false_by_default);TreeTransformer.call(this,this.before,this.after);this.options=defaults(options,{arguments:!false_by_default,booleans:!false_by_default,collapse_vars:!false_by_default,comparisons:!false_by_default,conditionals:!false_by_default,dead_code:!false_by_default,directives:!false_by_default,drop_console:false,drop_debugger:!false_by_default,evaluate:!false_by_default,expression:false,global_defs:false,hoist_funs:false,hoist_props:!false_by_default,hoist_vars:false,ie8:false,if_return:!false_by_default,inline:!false_by_default,join_vars:!false_by_default,keep_fargs:true,keep_fnames:false,keep_infinity:false,loops:!false_by_default,negate_iife:!false_by_default,passes:1,properties:!false_by_default,pure_getters:!false_by_default&&"strict",pure_funcs:null,reduce_funcs:!false_by_default,reduce_vars:!false_by_default,sequences:!false_by_default,side_effects:!false_by_default,switches:!false_by_default,top_retain:null,toplevel:!!(options&&options["top_retain"]),typeofs:!false_by_default,unsafe:false,unsafe_comps:false,unsafe_Function:false,unsafe_math:false,unsafe_proto:false,unsafe_regexp:false,unsafe_undefined:false,unused:!false_by_default,warnings:false},true);var global_defs=this.options["global_defs"];if(typeof global_defs=="object")for(var key in global_defs){if(/^@/.test(key)&&HOP(global_defs,key)){global_defs[key.slice(1)]=parse(global_defs[key],{expression:true})}}if(this.options["inline"]===true)this.options["inline"]=3;var pure_funcs=this.options["pure_funcs"];if(typeof pure_funcs=="function"){this.pure_funcs=pure_funcs}else{this.pure_funcs=pure_funcs?function(node){return pure_funcs.indexOf(node.expression.print_to_string())<0}:return_true}var top_retain=this.options["top_retain"];if(top_retain instanceof RegExp){this.top_retain=function(def){return top_retain.test(def.name)}}else if(typeof top_retain=="function"){this.top_retain=top_retain}else if(top_retain){if(typeof top_retain=="string"){top_retain=top_retain.split(/,/)}this.top_retain=function(def){return top_retain.indexOf(def.name)>=0}}var toplevel=this.options["toplevel"];this.toplevel=typeof toplevel=="string"?{funcs:/funcs/.test(toplevel),vars:/vars/.test(toplevel)}:{funcs:toplevel,vars:toplevel};var sequences=this.options["sequences"];this.sequences_limit=sequences==1?800:sequences|0;this.warnings_produced={}}Compressor.prototype=new TreeTransformer;merge(Compressor.prototype,{option:function(key){return this.options[key]},exposed:function(def){if(def.global)for(var i=0,len=def.orig.length;i<len;i++)if(!this.toplevel[def.orig[i]instanceof AST_SymbolDefun?"funcs":"vars"])return true;return false},compress:function(node){node=node.resolve_defines(this);if(this.option("expression")){node.process_expression(true)}var passes=+this.options.passes||1;var min_count=1/0;var stopping=false;var mangle={ie8:this.option("ie8")};for(var pass=0;pass<passes;pass++){node.figure_out_scope(mangle);if(pass>0||this.option("reduce_vars"))node.reset_opt_flags(this);node=node.transform(this);if(passes>1){var count=0;node.walk(new TreeWalker(function(){count++}));this.info("pass "+pass+": last_count: "+min_count+", count: "+count);if(count<min_count){min_count=count;stopping=false}else if(stopping){break}else{stopping=true}}}if(this.option("expression")){node.process_expression(false)}return node},info:function(){if(this.options.warnings=="verbose"){AST_Node.warn.apply(AST_Node,arguments)}},warn:function(text,props){if(this.options.warnings){var message=string_template(text,props);if(!(message in this.warnings_produced)){this.warnings_produced[message]=true;AST_Node.warn.apply(AST_Node,arguments)}}},clear_warnings:function(){this.warnings_produced={}},before:function(node,descend,in_list){if(node._squeezed)return node;var is_scope=node instanceof AST_Scope;if(is_scope){node.hoist_properties(this);node.hoist_declarations(this)}descend(node,this);descend(node,this);var opt=node.optimize(this);if(is_scope){opt.drop_unused(this);descend(opt,this)}if(opt===node)opt._squeezed=true;return opt}});(function(OPT){OPT(AST_Node,function(self,compressor){return self});AST_Node.DEFMETHOD("equivalent_to",function(node){return this.TYPE==node.TYPE&&this.print_to_string()==node.print_to_string()});AST_Scope.DEFMETHOD("process_expression",function(insert,compressor){var self=this;var tt=new TreeTransformer(function(node){if(insert&&node instanceof AST_SimpleStatement){return make_node(AST_Return,node,{value:node.body})}if(!insert&&node instanceof AST_Return){if(compressor){var value=node.value&&node.value.drop_side_effect_free(compressor,true);return value?make_node(AST_SimpleStatement,node,{body:value}):make_node(AST_EmptyStatement,node)}return make_node(AST_SimpleStatement,node,{body:node.value||make_node(AST_UnaryPrefix,node,{operator:"void",expression:make_node(AST_Number,node,{value:0})})})}if(node instanceof AST_Lambda&&node!==self){return node}if(node instanceof AST_Block){var index=node.body.length-1;if(index>=0){node.body[index]=node.body[index].transform(tt)}}else if(node instanceof AST_If){node.body=node.body.transform(tt);if(node.alternative){node.alternative=node.alternative.transform(tt)}}else if(node instanceof AST_With){node.body=node.body.transform(tt)}return node});self.transform(tt)});function read_property(obj,key){key=get_value(key);if(key instanceof AST_Node)return;var value;if(obj instanceof AST_Array){var elements=obj.elements;if(key=="length")return make_node_from_constant(elements.length,obj);if(typeof key=="number"&&key in elements)value=elements[key]}else if(obj instanceof AST_Object){key=""+key;var props=obj.properties;for(var i=props.length;--i>=0;){var prop=props[i];if(!(prop instanceof AST_ObjectKeyVal))return;if(!value&&props[i].key===key)value=props[i].value}}return value instanceof AST_SymbolRef&&value.fixed_value()||value}function is_modified(compressor,tw,node,value,level,immutable){var parent=tw.parent(level);var lhs=is_lhs(node,parent);if(lhs)return lhs;if(!immutable&&parent instanceof AST_Call&&parent.expression===node&&!parent.is_expr_pure(compressor)&&(!(value instanceof AST_Function)||!(parent instanceof AST_New)&&value.contains_this())){return true}if(parent instanceof AST_Array){return is_modified(compressor,tw,parent,parent,level+1)}if(parent instanceof AST_ObjectKeyVal&&node===parent.value){var obj=tw.parent(level+1);return is_modified(compressor,tw,obj,obj,level+2)}if(parent instanceof AST_PropAccess&&parent.expression===node){var prop=read_property(value,parent.property);return!immutable&&is_modified(compressor,tw,parent,prop,level+1)}}(function(def){def(AST_Node,noop);function reset_def(tw,compressor,def){def.assignments=0;def.chained=false;def.direct_access=false;def.escaped=false;def.fixed=!def.scope.pinned()&&!compressor.exposed(def)&&!(def.init instanceof AST_Function&&def.init!==def.scope)&&def.init;if(def.fixed instanceof AST_Defun&&!all(def.references,function(ref){var scope=ref.scope;do{if(def.scope===scope)return true}while(scope instanceof AST_Function&&(scope=scope.parent_scope))})){tw.defun_ids[def.id]=false}def.recursive_refs=0;def.references=[];def.should_replace=undefined;def.single_use=undefined}function reset_variables(tw,compressor,scope){scope.variables.each(function(def){reset_def(tw,compressor,def);if(def.fixed===null){def.safe_ids=tw.safe_ids;mark(tw,def,true)}else if(def.fixed){tw.loop_ids[def.id]=tw.in_loop;mark(tw,def,true)}});scope.may_call_this=function(){scope.may_call_this=noop;if(!scope.contains_this())return;scope.functions.each(function(def){if(def.init instanceof AST_Defun&&!(def.id in tw.defun_ids)){tw.defun_ids[def.id]=false}})}}function mark_defun(tw,def){if(def.id in tw.defun_ids){var marker=tw.defun_ids[def.id];if(!marker)return;var visited=tw.defun_visited[def.id];if(marker===tw.safe_ids){if(!visited)return def.fixed}else if(visited){def.init.enclosed.forEach(function(d){if(def.init.variables.get(d.name)===d)return;if(!safe_to_read(tw,d))d.fixed=false})}else{tw.defun_ids[def.id]=false}}else{if(!tw.in_loop){tw.defun_ids[def.id]=tw.safe_ids;return def.fixed}tw.defun_ids[def.id]=false}}function walk_defuns(tw,scope){scope.functions.each(function(def){if(def.init instanceof AST_Defun&&!tw.defun_visited[def.id]){tw.defun_ids[def.id]=tw.safe_ids;def.init.walk(tw)}})}function push(tw){tw.safe_ids=Object.create(tw.safe_ids)}function pop(tw){tw.safe_ids=Object.getPrototypeOf(tw.safe_ids)}function mark(tw,def,safe){tw.safe_ids[def.id]=safe}function safe_to_read(tw,def){if(def.single_use=="m")return false;if(tw.safe_ids[def.id]){if(def.fixed==null){var orig=def.orig[0];if(orig instanceof AST_SymbolFunarg||orig.name=="arguments")return false;def.fixed=make_node(AST_Undefined,orig)}return true}return def.fixed instanceof AST_Defun}function safe_to_assign(tw,def,scope,value){if(def.fixed===undefined)return true;if(def.fixed===null&&def.safe_ids){def.safe_ids[def.id]=false;delete def.safe_ids;return true}if(!HOP(tw.safe_ids,def.id))return false;if(!safe_to_read(tw,def))return false;if(def.fixed===false)return false;if(def.fixed!=null&&(!value||def.references.length>def.assignments))return false;if(def.fixed instanceof AST_Defun){return value instanceof AST_Node&&def.fixed.parent_scope===scope}return all(def.orig,function(sym){return!(sym instanceof AST_SymbolDefun||sym instanceof AST_SymbolLambda)})}function ref_once(tw,compressor,def){return compressor.option("unused")&&!def.scope.pinned()&&def.references.length-def.recursive_refs==1&&tw.loop_ids[def.id]===tw.in_loop}function is_immutable(value){if(!value)return false;return value.is_constant()||value instanceof AST_Lambda||value instanceof AST_This}function mark_escaped(tw,d,scope,node,value,level,depth){var parent=tw.parent(level);if(value&&value.is_constant())return;if(parent instanceof AST_Assign&&parent.operator=="="&&node===parent.right||parent instanceof AST_Call&&(node!==parent.expression||parent instanceof AST_New)||parent instanceof AST_Exit&&node===parent.value&&node.scope!==d.scope||parent instanceof AST_VarDef&&node===parent.value){if(depth>1&&!(value&&value.is_constant_expression(scope)))depth=1;if(!d.escaped||d.escaped>depth)d.escaped=depth;return}else if(parent instanceof AST_Array||parent instanceof AST_Binary&&lazy_op[parent.operator]||parent instanceof AST_Conditional&&node!==parent.condition||parent instanceof AST_Sequence&&node===parent.tail_node()){mark_escaped(tw,d,scope,parent,parent,level+1,depth)}else if(parent instanceof AST_ObjectKeyVal&&node===parent.value){var obj=tw.parent(level+1);mark_escaped(tw,d,scope,obj,obj,level+2,depth)}else if(parent instanceof AST_PropAccess&&node===parent.expression){value=read_property(value,parent.property);mark_escaped(tw,d,scope,parent,value,level+1,depth+1);if(value)return}if(level>0)return;if(parent instanceof AST_Sequence&&node!==parent.tail_node())return;if(parent instanceof AST_SimpleStatement)return;d.direct_access=true}var suppressor=new TreeWalker(function(node){if(!(node instanceof AST_Symbol))return;var d=node.definition();if(!d)return;if(node instanceof AST_SymbolRef)d.references.push(node);d.fixed=false});def(AST_Accessor,function(tw,descend,compressor){push(tw);reset_variables(tw,compressor,this);descend();pop(tw);walk_defuns(tw,this);return true});def(AST_Assign,function(tw,descend,compressor){var node=this;var sym=node.left;if(!(sym instanceof AST_SymbolRef))return;var d=sym.definition();var safe=safe_to_assign(tw,d,sym.scope,node.right);d.assignments++;if(!safe)return;var fixed=d.fixed;if(!fixed&&node.operator!="=")return;var eq=node.operator=="=";var value=eq?node.right:node;if(is_modified(compressor,tw,node,value,0))return;d.references.push(sym);if(!eq)d.chained=true;d.fixed=eq?function(){return node.right}:function(){return make_node(AST_Binary,node,{operator:node.operator.slice(0,-1),left:fixed instanceof AST_Node?fixed:fixed(),right:node.right})};mark(tw,d,false);node.right.walk(tw);mark(tw,d,true);mark_escaped(tw,d,sym.scope,node,value,0,1);return true});def(AST_Binary,function(tw){if(!lazy_op[this.operator])return;this.left.walk(tw);push(tw);this.right.walk(tw);pop(tw);return true});def(AST_Call,function(tw,descend){tw.find_parent(AST_Scope).may_call_this();var exp=this.expression;if(!(exp instanceof AST_SymbolRef))return;var def=exp.definition();if(!(def.fixed instanceof AST_Defun))return;var defun=mark_defun(tw,def);if(!defun)return;descend();defun.walk(tw);return true});def(AST_Case,function(tw){push(tw);this.expression.walk(tw);pop(tw);push(tw);walk_body(this,tw);pop(tw);return true});def(AST_Conditional,function(tw){this.condition.walk(tw);push(tw);this.consequent.walk(tw);pop(tw);push(tw);this.alternative.walk(tw);pop(tw);return true});def(AST_Default,function(tw,descend){push(tw);descend();pop(tw);return true});def(AST_Defun,function(tw,descend,compressor){var id=this.name.definition().id;if(tw.defun_visited[id])return true;if(tw.defun_ids[id]!==tw.safe_ids)return true;tw.defun_visited[id]=true;this.inlined=false;push(tw);reset_variables(tw,compressor,this);descend();pop(tw);walk_defuns(tw,this);return true});def(AST_Do,function(tw){var saved_loop=tw.in_loop;tw.in_loop=this;push(tw);this.body.walk(tw);if(has_break_or_continue(this)){pop(tw);push(tw)}this.condition.walk(tw);pop(tw);tw.in_loop=saved_loop;return true});def(AST_For,function(tw){if(this.init)this.init.walk(tw);var saved_loop=tw.in_loop;tw.in_loop=this;push(tw);if(this.condition)this.condition.walk(tw);this.body.walk(tw);if(this.step){if(has_break_or_continue(this)){pop(tw);push(tw)}this.step.walk(tw)}pop(tw);tw.in_loop=saved_loop;return true});def(AST_ForIn,function(tw){this.init.walk(suppressor);this.object.walk(tw);var saved_loop=tw.in_loop;tw.in_loop=this;push(tw);this.body.walk(tw);pop(tw);tw.in_loop=saved_loop;return true});def(AST_Function,function(tw,descend,compressor){var node=this;node.inlined=false;push(tw);reset_variables(tw,compressor,node);var iife;if(!node.name&&(iife=tw.parent())instanceof AST_Call&&iife.expression===node){node.argnames.forEach(function(arg,i){var d=arg.definition();if(d.fixed===undefined&&(!node.uses_arguments||tw.has_directive("use strict"))){d.fixed=function(){return iife.args[i]||make_node(AST_Undefined,iife)};tw.loop_ids[d.id]=tw.in_loop;mark(tw,d,true)}else{d.fixed=false}})}descend();pop(tw);walk_defuns(tw,node);return true});def(AST_If,function(tw){this.condition.walk(tw);push(tw);this.body.walk(tw);pop(tw);if(this.alternative){push(tw);this.alternative.walk(tw);pop(tw)}return true});def(AST_LabeledStatement,function(tw){push(tw);this.body.walk(tw);pop(tw);return true});def(AST_SymbolCatch,function(){this.definition().fixed=false});def(AST_SymbolRef,function(tw,descend,compressor){var d=this.definition();d.references.push(this);if(d.references.length==1&&!d.fixed&&d.orig[0]instanceof AST_SymbolDefun){tw.loop_ids[d.id]=tw.in_loop}var value;if(d.fixed===undefined||!safe_to_read(tw,d)){d.fixed=false}else if(d.fixed){value=this.fixed_value();if(value instanceof AST_Lambda&&recursive_ref(tw,d)){d.recursive_refs++}else if(value&&ref_once(tw,compressor,d)){d.single_use=value instanceof AST_Lambda&&!value.pinned()||d.scope===this.scope&&value.is_constant_expression()}else{d.single_use=false}if(is_modified(compressor,tw,this,value,0,is_immutable(value))){if(d.single_use){d.single_use="m"}else{d.fixed=false}}}mark_escaped(tw,d,this.scope,this,value,0,1);var parent;if(d.fixed instanceof AST_Defun&&!((parent=tw.parent())instanceof AST_Call&&parent.expression===this)){var defun=mark_defun(tw,d);if(defun)defun.walk(tw)}});def(AST_Toplevel,function(tw,descend,compressor){this.globals.each(function(def){reset_def(tw,compressor,def)});push(tw);reset_variables(tw,compressor,this);descend();pop(tw);walk_defuns(tw,this);return true});def(AST_Try,function(tw){push(tw);walk_body(this,tw);pop(tw);if(this.bcatch){push(tw);this.bcatch.walk(tw);pop(tw)}if(this.bfinally)this.bfinally.walk(tw);return true});def(AST_Unary,function(tw,descend){var node=this;if(node.operator!="++"&&node.operator!="--")return;var exp=node.expression;if(!(exp instanceof AST_SymbolRef))return;var d=exp.definition();var safe=safe_to_assign(tw,d,exp.scope,true);d.assignments++;if(!safe)return;var fixed=d.fixed;if(!fixed)return;d.references.push(exp);d.chained=true;d.fixed=function(){return make_node(AST_Binary,node,{operator:node.operator.slice(0,-1),left:make_node(AST_UnaryPrefix,node,{operator:"+",expression:fixed instanceof AST_Node?fixed:fixed()}),right:make_node(AST_Number,node,{value:1})})};mark(tw,d,true);return true});def(AST_VarDef,function(tw,descend){var node=this;var d=node.name.definition();if(node.value){if(safe_to_assign(tw,d,node.name.scope,node.value)){d.fixed=function(){return node.value};tw.loop_ids[d.id]=tw.in_loop;mark(tw,d,false);descend();mark(tw,d,true);return true}else{d.fixed=false}}});def(AST_While,function(tw,descend){var saved_loop=tw.in_loop;tw.in_loop=this;push(tw);descend();pop(tw);tw.in_loop=saved_loop;return true})})(function(node,func){node.DEFMETHOD("reduce_vars",func)});AST_Toplevel.DEFMETHOD("reset_opt_flags",function(compressor){var tw=new TreeWalker(compressor.option("reduce_vars")?function(node,descend){node._squeezed=false;node._optimized=false;return node.reduce_vars(tw,descend,compressor)}:function(node){node._squeezed=false;node._optimized=false});tw.defun_ids=Object.create(null);tw.defun_visited=Object.create(null);tw.in_loop=null;tw.loop_ids=Object.create(null);tw.safe_ids=Object.create(null);this.walk(tw)});AST_Symbol.DEFMETHOD("fixed_value",function(){var fixed=this.definition().fixed;if(!fixed||fixed instanceof AST_Node)return fixed;return fixed()});AST_SymbolRef.DEFMETHOD("is_immutable",function(){var orig=this.definition().orig;return orig.length==1&&orig[0]instanceof AST_SymbolLambda});function is_lhs_read_only(lhs){if(lhs instanceof AST_This)return true;if(lhs instanceof AST_SymbolRef)return lhs.definition().orig[0]instanceof AST_SymbolLambda;if(lhs instanceof AST_PropAccess){lhs=lhs.expression;if(lhs instanceof AST_SymbolRef){if(lhs.is_immutable())return false;lhs=lhs.fixed_value()}if(!lhs)return true;if(lhs.is_constant())return true;return is_lhs_read_only(lhs)}return false}function find_variable(compressor,name){var scope,i=0;while(scope=compressor.parent(i++)){if(scope instanceof AST_Scope)break;if(scope instanceof AST_Catch){scope=scope.argname.definition().scope;break}}return scope.find_variable(name)}function make_node(ctor,orig,props){if(!props)props={};if(orig){if(!props.start)props.start=orig.start;if(!props.end)props.end=orig.end}return new ctor(props)}function make_sequence(orig,expressions){if(expressions.length==1)return expressions[0];return make_node(AST_Sequence,orig,{expressions:expressions.reduce(merge_sequence,[])})}function make_node_from_constant(val,orig){switch(typeof val){case"string":return make_node(AST_String,orig,{value:val});case"number":if(isNaN(val))return make_node(AST_NaN,orig);if(isFinite(val)){return 1/val<0?make_node(AST_UnaryPrefix,orig,{operator:"-",expression:make_node(AST_Number,orig,{value:-val})}):make_node(AST_Number,orig,{value:val})}return val<0?make_node(AST_UnaryPrefix,orig,{operator:"-",expression:make_node(AST_Infinity,orig)}):make_node(AST_Infinity,orig);case"boolean":return make_node(val?AST_True:AST_False,orig);case"undefined":return make_node(AST_Undefined,orig);default:if(val===null){return make_node(AST_Null,orig,{value:null})}if(val instanceof RegExp){return make_node(AST_RegExp,orig,{value:val})}throw new Error(string_template("Can't handle constant of type: {type}",{type:typeof val}))}}function needs_unbinding(compressor,val){return val instanceof AST_PropAccess||compressor.has_directive("use strict")&&is_undeclared_ref(val)&&val.name=="eval"}function maintain_this_binding(compressor,parent,orig,val){if(parent instanceof AST_UnaryPrefix&&parent.operator=="delete"||parent.TYPE=="Call"&&parent.expression===orig&&needs_unbinding(compressor,val)){return make_sequence(orig,[make_node(AST_Number,orig,{value:0}),val])}return val}function merge_sequence(array,node){if(node instanceof AST_Sequence){array.push.apply(array,node.expressions)}else{array.push(node)}return array}function as_statement_array(thing){if(thing===null)return[];if(thing instanceof AST_BlockStatement)return thing.body;if(thing instanceof AST_EmptyStatement)return[];if(thing instanceof AST_Statement)return[thing];throw new Error("Can't convert thing to statement array")}function is_empty(thing){if(thing===null)return true;if(thing instanceof AST_EmptyStatement)return true;if(thing instanceof AST_BlockStatement)return thing.body.length==0;return false}function loop_body(x){if(x instanceof AST_IterationStatement){return x.body instanceof AST_BlockStatement?x.body:x}return x}function root_expr(prop){while(prop instanceof AST_PropAccess)prop=prop.expression;return prop}function is_iife_call(node){if(node.TYPE!="Call")return false;return node.expression instanceof AST_Function||is_iife_call(node.expression)}function is_undeclared_ref(node){return node instanceof AST_SymbolRef&&node.definition().undeclared}var global_names=makePredicate("Array Boolean clearInterval clearTimeout console Date decodeURI decodeURIComponent encodeURI encodeURIComponent Error escape eval EvalError Function isFinite isNaN JSON Math Number parseFloat parseInt RangeError ReferenceError RegExp Object setInterval setTimeout String SyntaxError TypeError unescape URIError");AST_SymbolRef.DEFMETHOD("is_declared",function(compressor){return!this.definition().undeclared||compressor.option("unsafe")&&global_names[this.name]});var identifier_atom=makePredicate("Infinity NaN undefined");function is_identifier_atom(node){return node instanceof AST_Infinity||node instanceof AST_NaN||node instanceof AST_Undefined}function tighten_body(statements,compressor){var in_loop,in_try,scope;find_loop_scope_try();var CHANGED,max_iter=10;do{CHANGED=false;eliminate_spurious_blocks(statements);if(compressor.option("dead_code")){eliminate_dead_code(statements,compressor)}if(compressor.option("if_return")){handle_if_return(statements,compressor)}if(compressor.sequences_limit>0){sequencesize(statements,compressor);sequencesize_2(statements,compressor)}if(compressor.option("join_vars")){join_consecutive_vars(statements)}if(compressor.option("collapse_vars")){collapse(statements,compressor)}}while(CHANGED&&max_iter-- >0);function find_loop_scope_try(){var node=compressor.self(),level=0;do{if(node instanceof AST_Catch||node instanceof AST_Finally){level++}else if(node instanceof AST_IterationStatement){in_loop=true}else if(node instanceof AST_Scope){scope=node;break}else if(node instanceof AST_Try){in_try=true}}while(node=compressor.parent(level++))}function collapse(statements,compressor){if(scope.pinned())return statements;var args;var candidates=[];var stat_index=statements.length;var scanner=new TreeTransformer(function(node){if(abort)return node;if(!hit){if(node!==hit_stack[hit_index])return node;hit_index++;if(hit_index<hit_stack.length)return handle_custom_scan_order(node);hit=true;stop_after=find_stop(node,0);if(stop_after===node)abort=true;return node}var parent=scanner.parent();if(should_stop(node,parent)){abort=true;return node}if(!stop_if_hit&&in_conditional(node,parent)){stop_if_hit=parent}var hit_lhs,hit_rhs;if(can_replace&&!(node instanceof AST_SymbolDeclaration)&&(scan_lhs&&(hit_lhs=lhs.equivalent_to(node))||scan_rhs&&(hit_rhs=scan_rhs(node,this)))){if(stop_if_hit&&(hit_rhs||!lhs_local||!replace_all)){abort=true;return node}if(is_lhs(node,parent)){if(value_def)replaced++;return node}else{replaced++;if(value_def&&candidate instanceof AST_VarDef)return node}CHANGED=abort=true;compressor.info("Collapsing {name} [{file}:{line},{col}]",{name:node.print_to_string(),file:node.start.file,line:node.start.line,col:node.start.col});if(candidate instanceof AST_UnaryPostfix){return make_node(AST_UnaryPrefix,candidate,candidate)}if(candidate instanceof AST_VarDef){var def=candidate.name.definition();if(def.references.length-def.replaced==1&&!compressor.exposed(def)){def.replaced++;return maintain_this_binding(compressor,parent,node,candidate.value)}return make_node(AST_Assign,candidate,{operator:"=",left:make_node(AST_SymbolRef,candidate.name,candidate.name),right:candidate.value})}candidate.write_only=false;return candidate}var sym;if(is_last_node(node,parent)||may_throw(node)){stop_after=node;if(node instanceof AST_Scope)abort=true}return handle_custom_scan_order(node)},function(node){if(abort)return;if(stop_after===node)abort=true;if(stop_if_hit===node)stop_if_hit=null});var multi_replacer=new TreeTransformer(function(node){if(abort)return node;if(!hit){if(node!==hit_stack[hit_index])return node;hit_index++;if(hit_index<hit_stack.length)return;hit=true;return node}if(node instanceof AST_SymbolRef&&node.name==def.name){if(!--replaced)abort=true;if(is_lhs(node,multi_replacer.parent()))return node;def.replaced++;value_def.replaced--;return candidate.value.clone()}if(node instanceof AST_Default||node instanceof AST_Scope)return node});while(--stat_index>=0){if(stat_index==0&&compressor.option("unused"))extract_args();var hit_stack=[];extract_candidates(statements[stat_index]);while(candidates.length>0){hit_stack=candidates.pop();var hit_index=0;var candidate=hit_stack[hit_stack.length-1];var value_def=null;var stop_after=null;var stop_if_hit=null;var lhs=get_lhs(candidate);var rhs=get_rhs(candidate);var side_effects=lhs&&lhs.has_side_effects(compressor);var scan_lhs=lhs&&!side_effects&&!is_lhs_read_only(lhs);var scan_rhs=rhs&&foldable(rhs);if(!scan_lhs&&!scan_rhs)continue;var lvalues=get_lvalues(candidate);var lhs_local=is_lhs_local(lhs);if(!side_effects)side_effects=value_has_side_effects(candidate);var replace_all=replace_all_symbols();var may_throw=candidate.may_throw(compressor)?in_try?function(node){return node.has_side_effects(compressor)}:side_effects_external:return_false;var funarg=candidate.name instanceof AST_SymbolFunarg;var hit=funarg;var abort=false,replaced=0,can_replace=!args||!hit;if(!can_replace){for(var j=compressor.self().argnames.lastIndexOf(candidate.name)+1;!abort&&j<args.length;j++){args[j].transform(scanner)}can_replace=true}for(var i=stat_index;!abort&&i<statements.length;i++){statements[i].transform(scanner)}if(value_def){var def=candidate.name.definition();if(abort&&def.references.length-def.replaced>replaced)replaced=false;else{abort=false;hit_index=0;hit=funarg;for(var i=stat_index;!abort&&i<statements.length;i++){statements[i].transform(multi_replacer)}value_def.single_use=false}}if(replaced&&!remove_candidate(candidate))statements.splice(stat_index,1)}}function handle_custom_scan_order(node){if(node instanceof AST_Scope)return node;if(node instanceof AST_Switch){node.expression=node.expression.transform(scanner);for(var i=0,len=node.body.length;!abort&&i<len;i++){var branch=node.body[i];if(branch instanceof AST_Case){if(!hit){if(branch!==hit_stack[hit_index])continue;hit_index++}branch.expression=branch.expression.transform(scanner);if(!replace_all)break}}abort=true;return node}}function should_stop(node,parent){if(parent instanceof AST_For)return node!==parent.init;if(node instanceof AST_Assign){return node.operator!="="&&lhs.equivalent_to(node.left)}if(node instanceof AST_Call){return lhs instanceof AST_PropAccess&&lhs.equivalent_to(node.expression)}if(node instanceof AST_Debugger)return true;if(node instanceof AST_IterationStatement)return!(node instanceof AST_For);if(node instanceof AST_LoopControl)return true;if(node instanceof AST_Try)return true;if(node instanceof AST_With)return true;if(replace_all)return false;return node instanceof AST_SymbolRef&&!node.is_declared(compressor)}function in_conditional(node,parent){if(parent instanceof AST_Binary)return lazy_op[parent.operator]&&parent.left!==node;if(parent instanceof AST_Conditional)return parent.condition!==node;return parent instanceof AST_If&&parent.condition!==node}function is_last_node(node,parent){if(node instanceof AST_Call)return true;if(node instanceof AST_Exit){return side_effects||lhs instanceof AST_PropAccess||may_modify(lhs)}if(node instanceof AST_Function){return compressor.option("ie8")&&node.name&&node.name.name in lvalues}if(node instanceof AST_PropAccess){return side_effects||node.expression.may_throw_on_access(compressor)}if(node instanceof AST_SymbolRef){if(symbol_in_lvalues(node,parent)){return!parent||parent.operator!="="||parent.left!==node}return side_effects&&may_modify(node)}if(node instanceof AST_This)return symbol_in_lvalues(node,parent);if(node instanceof AST_VarDef){if(!node.value)return false;return node.name.name in lvalues||side_effects&&may_modify(node.name)}var sym=is_lhs(node.left,node);if(sym&&sym.name in lvalues)return true;if(sym instanceof AST_PropAccess)return true}function extract_args(){var iife,fn=compressor.self();if(fn instanceof AST_Function&&!fn.name&&!fn.uses_arguments&&!fn.pinned()&&(iife=compressor.parent())instanceof AST_Call&&iife.expression===fn){var fn_strict=compressor.has_directive("use strict");if(fn_strict&&!member(fn_strict,fn.body))fn_strict=false;var len=fn.argnames.length;args=iife.args.slice(len);var names=Object.create(null);for(var i=len;--i>=0;){var sym=fn.argnames[i];var arg=iife.args[i];args.unshift(make_node(AST_VarDef,sym,{name:sym,value:arg}));if(sym.name in names)continue;names[sym.name]=true;if(!arg){arg=make_node(AST_Undefined,sym).transform(compressor)}else if(arg instanceof AST_Lambda&&arg.pinned()){arg=null}else{arg.walk(new TreeWalker(function(node){if(!arg)return true;if(node instanceof AST_SymbolRef&&fn.variables.has(node.name)){var s=node.definition().scope;if(s!==scope)while(s=s.parent_scope){if(s===scope)return true}arg=null}if(node instanceof AST_This&&(fn_strict||!this.find_parent(AST_Scope))){arg=null;return true}}))}if(arg)candidates.unshift([make_node(AST_VarDef,sym,{name:sym,value:arg})])}}}function extract_candidates(expr){hit_stack.push(expr);if(expr instanceof AST_Assign){candidates.push(hit_stack.slice());extract_candidates(expr.right)}else if(expr instanceof AST_Binary){extract_candidates(expr.left);extract_candidates(expr.right)}else if(expr instanceof AST_Call){extract_candidates(expr.expression);expr.args.forEach(extract_candidates)}else if(expr instanceof AST_Case){extract_candidates(expr.expression)}else if(expr instanceof AST_Conditional){extract_candidates(expr.condition);extract_candidates(expr.consequent);extract_candidates(expr.alternative)}else if(expr instanceof AST_Definitions){expr.definitions.forEach(extract_candidates)}else if(expr instanceof AST_DWLoop){extract_candidates(expr.condition);if(!(expr.body instanceof AST_Block)){extract_candidates(expr.body)}}else if(expr instanceof AST_Exit){if(expr.value)extract_candidates(expr.value)}else if(expr instanceof AST_For){if(expr.init)extract_candidates(expr.init);if(expr.condition)extract_candidates(expr.condition);if(expr.step)extract_candidates(expr.step);if(!(expr.body instanceof AST_Block)){extract_candidates(expr.body)}}else if(expr instanceof AST_ForIn){extract_candidates(expr.object);if(!(expr.body instanceof AST_Block)){extract_candidates(expr.body)}}else if(expr instanceof AST_If){extract_candidates(expr.condition);if(!(expr.body instanceof AST_Block)){extract_candidates(expr.body)}if(expr.alternative&&!(expr.alternative instanceof AST_Block)){extract_candidates(expr.alternative)}}else if(expr instanceof AST_Sequence){expr.expressions.forEach(extract_candidates)}else if(expr instanceof AST_SimpleStatement){extract_candidates(expr.body)}else if(expr instanceof AST_Switch){extract_candidates(expr.expression);expr.body.forEach(extract_candidates)}else if(expr instanceof AST_Unary){if(expr.operator=="++"||expr.operator=="--"){candidates.push(hit_stack.slice())}else{extract_candidates(expr.expression)}}else if(expr instanceof AST_VarDef){if(expr.value){var def=expr.name.definition();if(def.references.length>def.replaced){candidates.push(hit_stack.slice())}extract_candidates(expr.value)}}hit_stack.pop()}function find_stop(node,level,write_only){var parent=scanner.parent(level);if(parent instanceof AST_Assign){if(write_only&&!(parent.left instanceof AST_PropAccess||parent.left.name in lvalues)){return find_stop(parent,level+1,write_only)}return node}if(parent instanceof AST_Binary){if(write_only&&(!lazy_op[parent.operator]||parent.left===node)){return find_stop(parent,level+1,write_only)}return node}if(parent instanceof AST_Call)return node;if(parent instanceof AST_Case)return node;if(parent instanceof AST_Conditional){if(write_only&&parent.condition===node){return find_stop(parent,level+1,write_only)}return node}if(parent instanceof AST_Definitions){return find_stop(parent,level+1,true)}if(parent instanceof AST_Exit){return write_only?find_stop(parent,level+1,write_only):node}if(parent instanceof AST_If){if(write_only&&parent.condition===node){return find_stop(parent,level+1,write_only)}return node}if(parent instanceof AST_IterationStatement)return node;if(parent instanceof AST_Sequence){return find_stop(parent,level+1,parent.tail_node()!==node)}if(parent instanceof AST_SimpleStatement){return find_stop(parent,level+1,true)}if(parent instanceof AST_Switch)return node;if(parent instanceof AST_Unary)return node;if(parent instanceof AST_VarDef)return node;return null}function mangleable_var(var_def){var value=var_def.value;if(!(value instanceof AST_SymbolRef))return;if(value.name=="arguments")return;var def=value.definition();if(def.undeclared)return;return value_def=def}function get_lhs(expr){if(expr instanceof AST_VarDef){var def=expr.name.definition();if(!member(expr.name,def.orig))return;var referenced=def.references.length-def.replaced;var declared=def.orig.length-def.eliminated;if(declared>1&&!(expr.name instanceof AST_SymbolFunarg)||(referenced>1?mangleable_var(expr):!compressor.exposed(def))){return make_node(AST_SymbolRef,expr.name,expr.name)}}else{return expr[expr instanceof AST_Assign?"left":"expression"]}}function get_rhs(expr){return candidate instanceof AST_Assign&&candidate.operator=="="&&candidate.right}function get_rvalue(expr){return expr[expr instanceof AST_Assign?"right":"value"]}function invariant(expr){if(expr instanceof AST_Array)return false;if(expr instanceof AST_Binary&&lazy_op[expr.operator]){return invariant(expr.left)&&invariant(expr.right)}if(expr instanceof AST_Call)return false;if(expr instanceof AST_Conditional){return invariant(expr.consequent)&&invariant(expr.alternative)}if(expr instanceof AST_Object)return false;return!expr.has_side_effects(compressor)}function foldable(expr){if(expr instanceof AST_SymbolRef){var value=expr.evaluate(compressor);if(value===expr)return rhs_exact_match;return rhs_fuzzy_match(value,rhs_exact_match)}if(expr instanceof AST_This)return rhs_exact_match;if(expr.is_truthy())return rhs_fuzzy_match(true,return_false);if(expr.is_constant()){return rhs_fuzzy_match(expr.evaluate(compressor),rhs_exact_match)}if(!(lhs instanceof AST_SymbolRef))return false;if(!invariant(expr))return false;var circular;var def=lhs.definition();expr.walk(new TreeWalker(function(node){if(circular)return true;if(node instanceof AST_SymbolRef&&node.definition()===def){circular=true}}));return!circular&&rhs_exact_match}function rhs_exact_match(node){return rhs.equivalent_to(node)}function rhs_fuzzy_match(value,fallback){return function(node,tw){if(tw.in_boolean_context()){if(value&&node.is_truthy()&&!node.has_side_effects(compressor)){return true}if(node.is_constant()){return!node.evaluate(compressor)==!value}}return fallback(node)}}function get_lvalues(expr){var lvalues=Object.create(null);if(candidate instanceof AST_VarDef){lvalues[candidate.name.name]=lhs}var tw=new TreeWalker(function(node){var sym=root_expr(node);if(sym instanceof AST_SymbolRef||sym instanceof AST_This){lvalues[sym.name]=lvalues[sym.name]||is_modified(compressor,tw,node,node,0)}});expr.walk(tw);return lvalues}function remove_candidate(expr){if(expr.name instanceof AST_SymbolFunarg){var index=compressor.self().argnames.indexOf(expr.name);var args=compressor.parent().args;if(args[index])args[index]=make_node(AST_Number,args[index],{value:0});return true}var found=false;return statements[stat_index].transform(new TreeTransformer(function(node,descend,in_list){if(found)return node;if(node===expr||node.body===expr){found=true;if(node instanceof AST_VarDef){node.value=null;return node}return in_list?MAP.skip:null}},function(node){if(node instanceof AST_Sequence)switch(node.expressions.length){case 0:return null;case 1:return node.expressions[0]}}))}function is_lhs_local(lhs){var sym=root_expr(lhs);return sym instanceof AST_SymbolRef&&sym.definition().scope===scope&&!(in_loop&&(sym.name in lvalues&&lvalues[sym.name]!==lhs||candidate instanceof AST_Unary||candidate instanceof AST_Assign&&candidate.operator!="="))}function value_has_side_effects(expr){if(expr instanceof AST_Unary)return false;return get_rvalue(expr).has_side_effects(compressor)}function replace_all_symbols(){if(side_effects)return false;if(value_def)return true;if(lhs instanceof AST_SymbolRef){var def=lhs.definition();if(def.references.length-def.replaced==(candidate instanceof AST_VarDef?1:2)){return true}}return false}function symbol_in_lvalues(sym,parent){var lvalue=lvalues[sym.name];if(!lvalue)return;if(lvalue!==lhs)return!(parent instanceof AST_Call);scan_rhs=false}function may_modify(sym){var def=sym.definition();if(def.orig.length==1&&def.orig[0]instanceof AST_SymbolDefun)return false;if(def.scope!==scope)return true;return!all(def.references,function(ref){return ref.scope.resolve()===scope})}function side_effects_external(node,lhs){if(node instanceof AST_Assign)return side_effects_external(node.left,true);if(node instanceof AST_Unary)return side_effects_external(node.expression,true);if(node instanceof AST_VarDef)return node.value&&side_effects_external(node.value);if(lhs){if(node instanceof AST_Dot)return side_effects_external(node.expression,true);if(node instanceof AST_Sub)return side_effects_external(node.expression,true);if(node instanceof AST_SymbolRef)return node.definition().scope!==scope}return false}}function eliminate_spurious_blocks(statements){var seen_dirs=[];for(var i=0;i<statements.length;){var stat=statements[i];if(stat instanceof AST_BlockStatement){CHANGED=true;eliminate_spurious_blocks(stat.body);[].splice.apply(statements,[i,1].concat(stat.body));i+=stat.body.length}else if(stat instanceof AST_EmptyStatement){CHANGED=true;statements.splice(i,1)}else if(stat instanceof AST_Directive){if(seen_dirs.indexOf(stat.value)<0){i++;seen_dirs.push(stat.value)}else{CHANGED=true;statements.splice(i,1)}}else i++}}function handle_if_return(statements,compressor){var self=compressor.self();var multiple_if_returns=has_multiple_if_returns(statements);var in_lambda=self instanceof AST_Lambda;for(var i=statements.length;--i>=0;){var stat=statements[i];var j=next_index(i);var next=statements[j];if(in_lambda&&!next&&stat instanceof AST_Return){if(!stat.value){CHANGED=true;statements.splice(i,1);continue}if(stat.value instanceof AST_UnaryPrefix&&stat.value.operator=="void"){CHANGED=true;statements[i]=make_node(AST_SimpleStatement,stat,{body:stat.value.expression});continue}}if(stat instanceof AST_If){var ab=aborts(stat.body);if(can_merge_flow(ab)){if(ab.label){remove(ab.label.thedef.references,ab)}CHANGED=true;stat=stat.clone();stat.condition=stat.condition.negate(compressor);var body=as_statement_array_with_return(stat.body,ab);stat.body=make_node(AST_BlockStatement,stat,{body:as_statement_array(stat.alternative).concat(extract_functions())});stat.alternative=make_node(AST_BlockStatement,stat,{body:body});statements[i]=stat.transform(compressor);continue}if(ab&&!stat.alternative&&stat.body instanceof AST_BlockStatement&&next instanceof AST_Jump){var negated=stat.condition.negate(compressor);if(negated.print_to_string().length<=stat.condition.print_to_string().length){CHANGED=true;stat=stat.clone();stat.condition=negated;statements[j]=stat.body;stat.body=next;statements[i]=stat.transform(compressor);continue}}var ab=aborts(stat.alternative);if(can_merge_flow(ab)){if(ab.label){remove(ab.label.thedef.references,ab)}CHANGED=true;stat=stat.clone();stat.body=make_node(AST_BlockStatement,stat.body,{body:as_statement_array(stat.body).concat(extract_functions())});var body=as_statement_array_with_return(stat.alternative,ab);stat.alternative=make_node(AST_BlockStatement,stat.alternative,{body:body});statements[i]=stat.transform(compressor);continue}}if(stat instanceof AST_If&&stat.body instanceof AST_Return){var value=stat.body.value;if(!value&&!stat.alternative&&(in_lambda&&!next||next instanceof AST_Return&&!next.value)){CHANGED=true;statements[i]=make_node(AST_SimpleStatement,stat.condition,{body:stat.condition});continue}if(value&&!stat.alternative&&next instanceof AST_Return&&next.value){CHANGED=true;stat=stat.clone();stat.alternative=next;statements.splice(i,1,stat.transform(compressor));statements.splice(j,1);continue}if(value&&!stat.alternative&&(!next&&in_lambda&&multiple_if_returns||next instanceof AST_Return)){CHANGED=true;stat=stat.clone();stat.alternative=next||make_node(AST_Return,stat,{value:null});statements.splice(i,1,stat.transform(compressor));if(next)statements.splice(j,1);continue}var prev=statements[prev_index(i)];if(compressor.option("sequences")&&in_lambda&&!stat.alternative&&prev instanceof AST_If&&prev.body instanceof AST_Return&&next_index(j)==statements.length&&next instanceof AST_SimpleStatement){CHANGED=true;stat=stat.clone();stat.alternative=make_node(AST_BlockStatement,next,{body:[next,make_node(AST_Return,next,{value:null})]});statements.splice(i,1,stat.transform(compressor));statements.splice(j,1);continue}}}function has_multiple_if_returns(statements){var n=0;for(var i=statements.length;--i>=0;){var stat=statements[i];if(stat instanceof AST_If&&stat.body instanceof AST_Return){if(++n>1)return true}}return false}function is_return_void(value){return!value||value instanceof AST_UnaryPrefix&&value.operator=="void"}function can_merge_flow(ab){if(!ab)return false;var lct=ab instanceof AST_LoopControl?compressor.loopcontrol_target(ab):null;return ab instanceof AST_Return&&in_lambda&&is_return_void(ab.value)||ab instanceof AST_Continue&&self===loop_body(lct)||ab instanceof AST_Break&&lct instanceof AST_BlockStatement&&self===lct}function extract_functions(){var tail=statements.slice(i+1);statements.length=i+1;return tail.filter(function(stat){if(stat instanceof AST_Defun){statements.push(stat);return false}return true})}function as_statement_array_with_return(node,ab){var body=as_statement_array(node).slice(0,-1);if(ab.value){body.push(make_node(AST_SimpleStatement,ab.value,{body:ab.value.expression}))}return body}function next_index(i){for(var j=i+1,len=statements.length;j<len;j++){var stat=statements[j];if(!(stat instanceof AST_Var&&declarations_only(stat))){break}}return j}function prev_index(i){for(var j=i;--j>=0;){var stat=statements[j];if(!(stat instanceof AST_Var&&declarations_only(stat))){break}}return j}}function eliminate_dead_code(statements,compressor){var has_quit;var self=compressor.self();for(var i=0,n=0,len=statements.length;i<len;i++){var stat=statements[i];if(stat instanceof AST_LoopControl){var lct=compressor.loopcontrol_target(stat);if(stat instanceof AST_Break&&!(lct instanceof AST_IterationStatement)&&loop_body(lct)===self||stat instanceof AST_Continue&&loop_body(lct)===self){if(stat.label){remove(stat.label.thedef.references,stat)}}else{statements[n++]=stat}}else{statements[n++]=stat}if(aborts(stat)){has_quit=statements.slice(i+1);break}}statements.length=n;CHANGED=n!=len;if(has_quit)has_quit.forEach(function(stat){extract_declarations_from_unreachable_code(compressor,stat,statements)})}function declarations_only(node){return all(node.definitions,function(var_def){return!var_def.value})}function sequencesize(statements,compressor){if(statements.length<2)return;var seq=[],n=0;function push_seq(){if(!seq.length)return;var body=make_sequence(seq[0],seq);statements[n++]=make_node(AST_SimpleStatement,body,{body:body});seq=[]}for(var i=0,len=statements.length;i<len;i++){var stat=statements[i];if(stat instanceof AST_SimpleStatement){if(seq.length>=compressor.sequences_limit)push_seq();var body=stat.body;if(seq.length>0)body=body.drop_side_effect_free(compressor);if(body)merge_sequence(seq,body)}else if(stat instanceof AST_Definitions&&declarations_only(stat)||stat instanceof AST_Defun){statements[n++]=stat}else{push_seq();statements[n++]=stat}}push_seq();statements.length=n;if(n!=len)CHANGED=true}function to_simple_statement(block,decls){if(!(block instanceof AST_BlockStatement))return block;var stat=null;for(var i=0,len=block.body.length;i<len;i++){var line=block.body[i];if(line instanceof AST_Var&&declarations_only(line)){decls.push(line)}else if(stat){return false}else{stat=line}}return stat}function sequencesize_2(statements,compressor){function cons_seq(right){n--;CHANGED=true;var left=prev.body;return make_sequence(left,[left,right]).transform(compressor)}var n=0,prev;for(var i=0;i<statements.length;i++){var stat=statements[i];if(prev){if(stat instanceof AST_Exit){stat.value=cons_seq(stat.value||make_node(AST_Undefined,stat).transform(compressor))}else if(stat instanceof AST_For){if(!(stat.init instanceof AST_Definitions)){var abort=false;prev.body.walk(new TreeWalker(function(node){if(abort||node instanceof AST_Scope)return true;if(node instanceof AST_Binary&&node.operator=="in"){abort=true;return true}}));if(!abort){if(stat.init)stat.init=cons_seq(stat.init);else{stat.init=prev.body;n--;CHANGED=true}}}}else if(stat instanceof AST_ForIn){stat.object=cons_seq(stat.object)}else if(stat instanceof AST_If){stat.condition=cons_seq(stat.condition)}else if(stat instanceof AST_Switch){stat.expression=cons_seq(stat.expression)}else if(stat instanceof AST_With){stat.expression=cons_seq(stat.expression)}}if(compressor.option("conditionals")&&stat instanceof AST_If){var decls=[];var body=to_simple_statement(stat.body,decls);var alt=to_simple_statement(stat.alternative,decls);if(body!==false&&alt!==false&&decls.length>0){var len=decls.length;decls.push(make_node(AST_If,stat,{condition:stat.condition,body:body||make_node(AST_EmptyStatement,stat.body),alternative:alt}));decls.unshift(n,1);[].splice.apply(statements,decls);i+=len;n+=len+1;prev=null;CHANGED=true;continue}}statements[n++]=stat;prev=stat instanceof AST_SimpleStatement?stat:null}statements.length=n}function join_assigns(defn,body){var exprs;if(body instanceof AST_Assign){exprs=[body]}else if(body instanceof AST_Sequence){exprs=body.expressions.slice()}if(!exprs)return;if(defn instanceof AST_Definitions){var def=defn.definitions[defn.definitions.length-1];if(trim_assigns(def.name,def.value,exprs))return exprs}for(var i=exprs.length-1;--i>=0;){var expr=exprs[i];if(!(expr instanceof AST_Assign))continue;if(expr.operator!="=")continue;if(!(expr.left instanceof AST_SymbolRef))continue;var tail=exprs.slice(i+1);if(!trim_assigns(expr.left,expr.right,tail))continue;return exprs.slice(0,i+1).concat(tail)}}function trim_assigns(name,value,exprs){if(!(value instanceof AST_Object))return;var trimmed=false;do{var node=exprs[0];if(!(node instanceof AST_Assign))break;if(node.operator!="=")break;if(!(node.left instanceof AST_PropAccess))break;var sym=node.left.expression;if(!(sym instanceof AST_SymbolRef))break;if(name.name!=sym.name)break;if(!node.right.is_constant_expression(scope))break;var prop=node.left.property;if(prop instanceof AST_Node){prop=prop.evaluate(compressor)}if(prop instanceof AST_Node)break;prop=""+prop;var diff=compressor.has_directive("use strict")?function(node){return node.key!=prop&&node.key.name!=prop}:function(node){return node.key.name!=prop};if(!all(value.properties,diff))break;value.properties.push(make_node(AST_ObjectKeyVal,node,{key:prop,value:node.right}));exprs.shift();trimmed=true}while(exprs.length);return trimmed}function join_consecutive_vars(statements){var defs;for(var i=0,j=-1,len=statements.length;i<len;i++){var stat=statements[i];var prev=statements[j];if(stat instanceof AST_Definitions){if(prev&&prev.TYPE==stat.TYPE){prev.definitions=prev.definitions.concat(stat.definitions);CHANGED=true}else if(defs&&defs.TYPE==stat.TYPE&&declarations_only(stat)){defs.definitions=defs.definitions.concat(stat.definitions);CHANGED=true}else{statements[++j]=stat;defs=stat}}else if(stat instanceof AST_Exit){stat.value=join_assigns_expr(stat.value)}else if(stat instanceof AST_For){var exprs=join_assigns(prev,stat.init);if(exprs){CHANGED=true;stat.init=exprs.length?make_sequence(stat.init,exprs):null;statements[++j]=stat}else if(prev instanceof AST_Var&&(!stat.init||stat.init.TYPE==prev.TYPE)){if(stat.init){prev.definitions=prev.definitions.concat(stat.init.definitions)}stat.init=prev;statements[j]=stat;CHANGED=true}else if(defs&&stat.init&&defs.TYPE==stat.init.TYPE&&declarations_only(stat.init)){defs.definitions=defs.definitions.concat(stat.init.definitions);stat.init=null;statements[++j]=stat;CHANGED=true}else{statements[++j]=stat}}else if(stat instanceof AST_ForIn){stat.object=join_assigns_expr(stat.object)}else if(stat instanceof AST_If){stat.condition=join_assigns_expr(stat.condition)}else if(stat instanceof AST_SimpleStatement){var exprs=join_assigns(prev,stat.body);if(exprs){CHANGED=true;if(!exprs.length)continue;stat.body=make_sequence(stat.body,exprs)}statements[++j]=stat}else if(stat instanceof AST_Switch){stat.expression=join_assigns_expr(stat.expression)}else if(stat instanceof AST_With){stat.expression=join_assigns_expr(stat.expression)}else{statements[++j]=stat}}statements.length=j+1;function join_assigns_expr(value){statements[++j]=stat;var exprs=join_assigns(prev,value);if(!exprs)return value;CHANGED=true;var tail=value.tail_node();if(exprs[exprs.length-1]!==tail)exprs.push(tail.left);return make_sequence(value,exprs)}}}function extract_declarations_from_unreachable_code(compressor,stat,target){if(!(stat instanceof AST_Defun)){compressor.warn("Dropping unreachable code [{file}:{line},{col}]",stat.start)}stat.walk(new TreeWalker(function(node){if(node instanceof AST_Definitions){compressor.warn("Declarations in unreachable code! [{file}:{line},{col}]",node.start);node.remove_initializers();target.push(node);return true}if(node instanceof AST_Defun){target.push(node);return true}if(node instanceof AST_Scope){return true}}))}function get_value(key){if(key instanceof AST_Constant){return key.getValue()}if(key instanceof AST_UnaryPrefix&&key.operator=="void"&&key.expression instanceof AST_Constant){return}return key}function is_undefined(node,compressor){return node.is_undefined||node instanceof AST_Undefined||node instanceof AST_UnaryPrefix&&node.operator=="void"&&!node.expression.has_side_effects(compressor)}(function(def){def(AST_Node,return_false);def(AST_Array,return_true);def(AST_Assign,function(){return this.operator=="="&&this.right.is_truthy()});def(AST_Lambda,return_true);def(AST_Object,return_true);def(AST_RegExp,return_true);def(AST_Sequence,function(){return this.tail_node().is_truthy()});def(AST_SymbolRef,function(){var fixed=this.fixed_value();return fixed&&fixed.is_truthy()})})(function(node,func){node.DEFMETHOD("is_truthy",func)});(function(def){AST_Node.DEFMETHOD("may_throw_on_access",function(compressor){return!compressor.option("pure_getters")||this._dot_throw(compressor)});function is_strict(compressor){return/strict/.test(compressor.option("pure_getters"))}def(AST_Node,is_strict);def(AST_Null,return_true);def(AST_Undefined,return_true);def(AST_Constant,return_false);def(AST_Array,return_false);def(AST_Object,function(compressor){if(!is_strict(compressor))return false;for(var i=this.properties.length;--i>=0;)if(this.properties[i].value instanceof AST_Accessor)return true;return false});def(AST_Lambda,return_false);def(AST_UnaryPostfix,return_false);def(AST_UnaryPrefix,function(){return this.operator=="void"});def(AST_Binary,function(compressor){return(this.operator=="&&"||this.operator=="||")&&(this.left._dot_throw(compressor)||this.right._dot_throw(compressor))});def(AST_Assign,function(compressor){return this.operator=="="&&this.right._dot_throw(compressor)});def(AST_Conditional,function(compressor){return this.consequent._dot_throw(compressor)||this.alternative._dot_throw(compressor)});def(AST_Dot,function(compressor){if(!is_strict(compressor))return false;var exp=this.expression;if(exp instanceof AST_SymbolRef)exp=exp.fixed_value();return!(exp instanceof AST_Lambda&&this.property=="prototype")});def(AST_Sequence,function(compressor){return this.tail_node()._dot_throw(compressor)});def(AST_SymbolRef,function(compressor){if(this.is_undefined)return true;if(!is_strict(compressor))return false;if(is_undeclared_ref(this)&&this.is_declared(compressor))return false;if(this.is_immutable())return false;var fixed=this.fixed_value();return!fixed||fixed._dot_throw(compressor)})})(function(node,func){node.DEFMETHOD("_dot_throw",func)});(function(def){def(AST_Node,return_false);def(AST_Assign,function(compressor){return this.operator=="="&&this.right.is_boolean(compressor)});var binary=makePredicate("in instanceof == != === !== < <= >= >");def(AST_Binary,function(compressor){return binary[this.operator]||lazy_op[this.operator]&&this.left.is_boolean(compressor)&&this.right.is_boolean(compressor)});def(AST_Boolean,return_true);var fn=makePredicate("every hasOwnProperty isPrototypeOf propertyIsEnumerable some");def(AST_Call,function(compressor){if(!compressor.option("unsafe"))return false;var exp=this.expression;return exp instanceof AST_Dot&&(fn[exp.property]||exp.property=="test"&&exp.expression instanceof AST_RegExp)});def(AST_Conditional,function(compressor){return this.consequent.is_boolean(compressor)&&this.alternative.is_boolean(compressor)});def(AST_New,return_false);def(AST_Sequence,function(compressor){return this.tail_node().is_boolean(compressor)});var unary=makePredicate("! delete");def(AST_UnaryPrefix,function(){return unary[this.operator]})})(function(node,func){node.DEFMETHOD("is_boolean",func)});(function(def){def(AST_Node,return_false);var binary=makePredicate("- * / % & | ^ << >> >>>");def(AST_Assign,function(compressor){return binary[this.operator.slice(0,-1)]||this.operator=="="&&this.right.is_number(compressor)});def(AST_Binary,function(compressor){return binary[this.operator]||this.operator=="+"&&this.left.is_number(compressor)&&this.right.is_number(compressor)});var fn=makePredicate(["charCodeAt","getDate","getDay","getFullYear","getHours","getMilliseconds","getMinutes","getMonth","getSeconds","getTime","getTimezoneOffset","getUTCDate","getUTCDay","getUTCFullYear","getUTCHours","getUTCMilliseconds","getUTCMinutes","getUTCMonth","getUTCSeconds","getYear","indexOf","lastIndexOf","localeCompare","push","search","setDate","setFullYear","setHours","setMilliseconds","setMinutes","setMonth","setSeconds","setTime","setUTCDate","setUTCFullYear","setUTCHours","setUTCMilliseconds","setUTCMinutes","setUTCMonth","setUTCSeconds","setYear","toExponential","toFixed","toPrecision"]);def(AST_Call,function(compressor){if(!compressor.option("unsafe"))return false;var exp=this.expression;return exp instanceof AST_Dot&&(fn[exp.property]||is_undeclared_ref(exp.expression)&&exp.expression.name=="Math")});def(AST_Conditional,function(compressor){return this.consequent.is_number(compressor)&&this.alternative.is_number(compressor)});def(AST_New,return_false);def(AST_Number,return_true);def(AST_Sequence,function(compressor){return this.tail_node().is_number(compressor)});var unary=makePredicate("+ - ~ ++ --");def(AST_Unary,function(){return unary[this.operator]})})(function(node,func){node.DEFMETHOD("is_number",func)});(function(def){def(AST_Node,return_false);def(AST_String,return_true);def(AST_UnaryPrefix,function(){return this.operator=="typeof"});def(AST_Binary,function(compressor){return this.operator=="+"&&(this.left.is_string(compressor)||this.right.is_string(compressor))});def(AST_Assign,function(compressor){return(this.operator=="="||this.operator=="+=")&&this.right.is_string(compressor)});def(AST_Sequence,function(compressor){return this.tail_node().is_string(compressor)});def(AST_Conditional,function(compressor){return this.consequent.is_string(compressor)&&this.alternative.is_string(compressor)})})(function(node,func){node.DEFMETHOD("is_string",func)});var lazy_op=makePredicate("&& ||");var unary_side_effects=makePredicate("delete ++ --");function is_lhs(node,parent){if(parent instanceof AST_Unary&&unary_side_effects[parent.operator])return parent.expression;if(parent instanceof AST_Assign&&parent.left===node)return node}(function(def){function to_node(value,orig){if(value instanceof AST_Node)return make_node(value.CTOR,orig,value);if(Array.isArray(value))return make_node(AST_Array,orig,{elements:value.map(function(value){return to_node(value,orig)})});if(value&&typeof value=="object"){var props=[];for(var key in value)if(HOP(value,key)){props.push(make_node(AST_ObjectKeyVal,orig,{key:key,value:to_node(value[key],orig)}))}return make_node(AST_Object,orig,{properties:props})}return make_node_from_constant(value,orig)}function warn(compressor,node){compressor.warn("global_defs "+node.print_to_string()+" redefined [{file}:{line},{col}]",node.start)}AST_Toplevel.DEFMETHOD("resolve_defines",function(compressor){if(!compressor.option("global_defs"))return this;this.figure_out_scope({ie8:compressor.option("ie8")});return this.transform(new TreeTransformer(function(node){var def=node._find_defs(compressor,"");if(!def)return;var level=0,child=node,parent;while(parent=this.parent(level++)){if(!(parent instanceof AST_PropAccess))break;if(parent.expression!==child)break;child=parent}if(is_lhs(child,parent)){warn(compressor,node);return}return def}))});def(AST_Node,noop);def(AST_Dot,function(compressor,suffix){return this.expression._find_defs(compressor,"."+this.property+suffix)});def(AST_SymbolDeclaration,function(compressor){if(!this.global())return;if(HOP(compressor.option("global_defs"),this.name))warn(compressor,this)});def(AST_SymbolRef,function(compressor,suffix){if(!this.global())return;var defines=compressor.option("global_defs");var name=this.name+suffix;if(HOP(defines,name))return to_node(defines[name],this)})})(function(node,func){node.DEFMETHOD("_find_defs",func)});function best_of_expression(ast1,ast2){return ast1.print_to_string().length>ast2.print_to_string().length?ast2:ast1}function best_of_statement(ast1,ast2){return best_of_expression(make_node(AST_SimpleStatement,ast1,{body:ast1}),make_node(AST_SimpleStatement,ast2,{body:ast2})).body}function best_of(compressor,ast1,ast2){return(first_in_statement(compressor)?best_of_statement:best_of_expression)(ast1,ast2)}function convert_to_predicate(obj){for(var key in obj){obj[key]=makePredicate(obj[key])}}var object_fns=["constructor","toString","valueOf"];var native_fns={Array:["indexOf","join","lastIndexOf","slice"].concat(object_fns),Boolean:object_fns,Function:object_fns,Number:["toExponential","toFixed","toPrecision"].concat(object_fns),Object:object_fns,RegExp:["test"].concat(object_fns),String:["charAt","charCodeAt","concat","indexOf","italics","lastIndexOf","match","replace","search","slice","split","substr","substring","toLowerCase","toUpperCase","trim"].concat(object_fns)};convert_to_predicate(native_fns);var static_fns={Array:["isArray"],Math:["abs","acos","asin","atan","ceil","cos","exp","floor","log","round","sin","sqrt","tan","atan2","pow","max","min"],Number:["isFinite","isNaN"],Object:["create","getOwnPropertyDescriptor","getOwnPropertyNames","getPrototypeOf","isExtensible","isFrozen","isSealed","keys"],String:["fromCharCode"]};convert_to_predicate(static_fns);(function(def){AST_Node.DEFMETHOD("evaluate",function(compressor){if(!compressor.option("evaluate"))return this;var cached=[];var val=this._eval(compressor,cached,1);cached.forEach(function(node){delete node._eval});if(!val||val instanceof RegExp)return val;if(typeof val=="function"||typeof val=="object")return this;return val});var unaryPrefix=makePredicate("! ~ - + void");AST_Node.DEFMETHOD("is_constant",function(){if(this instanceof AST_Constant){return!(this instanceof AST_RegExp)}else{return this instanceof AST_UnaryPrefix&&this.expression instanceof AST_Constant&&unaryPrefix[this.operator]}});def(AST_Statement,function(){throw new Error(string_template("Cannot evaluate a statement [{file}:{line},{col}]",this.start))});def(AST_Lambda,return_this);def(AST_Node,return_this);def(AST_Constant,function(){return this.getValue()});def(AST_Function,function(compressor){if(compressor.option("unsafe")){var fn=function(){};fn.node=this;fn.toString=function(){return"function(){}"};return fn}return this});def(AST_Array,function(compressor,cached,depth){if(compressor.option("unsafe")){var elements=[];for(var i=0,len=this.elements.length;i<len;i++){var element=this.elements[i];var value=element._eval(compressor,cached,depth);if(element===value)return this;elements.push(value)}return elements}return this});def(AST_Object,function(compressor,cached,depth){if(compressor.option("unsafe")){var val={};for(var i=0,len=this.properties.length;i<len;i++){var prop=this.properties[i];var key=prop.key;if(key instanceof AST_Symbol){key=key.name}else if(key instanceof AST_Node){key=key._eval(compressor,cached,depth);if(key===prop.key)return this}if(typeof Object.prototype[key]==="function"){return this}if(prop.value instanceof AST_Function)continue;val[key]=prop.value._eval(compressor,cached,depth);if(val[key]===prop.value)return this}return val}return this});var non_converting_unary=makePredicate("! typeof void");def(AST_UnaryPrefix,function(compressor,cached,depth){var e=this.expression;if(compressor.option("typeofs")&&this.operator=="typeof"&&(e instanceof AST_Lambda||e instanceof AST_SymbolRef&&e.fixed_value()instanceof AST_Lambda)){return typeof function(){}}if(!non_converting_unary[this.operator])depth++;e=e._eval(compressor,cached,depth);if(e===this.expression)return this;switch(this.operator){case"!":return!e;case"typeof":if(e instanceof RegExp)return this;return typeof e;case"void":return void e;case"~":return~e;case"-":return-e;case"+":return+e}return this});var non_converting_binary=makePredicate("&& || === !==");def(AST_Binary,function(compressor,cached,depth){if(!non_converting_binary[this.operator])depth++;var left=this.left._eval(compressor,cached,depth);if(left===this.left)return this;var right=this.right._eval(compressor,cached,depth);if(right===this.right)return this;var result;switch(this.operator){case"&&":result=left&&right;break;case"||":result=left||right;break;case"|":result=left|right;break;case"&":result=left&right;break;case"^":result=left^right;break;case"+":result=left+right;break;case"*":result=left*right;break;case"/":result=left/right;break;case"%":result=left%right;break;case"-":result=left-right;break;case"<<":result=left<<right;break;case">>":result=left>>right;break;case">>>":result=left>>>right;break;case"==":result=left==right;break;case"===":result=left===right;break;case"!=":result=left!=right;break;case"!==":result=left!==right;break;case"<":result=left<right;break;case"<=":result=left<=right;break;case">":result=left>right;break;case">=":result=left>=right;break;default:return this}return isNaN(result)&&compressor.find_parent(AST_With)?this:result});def(AST_Conditional,function(compressor,cached,depth){var condition=this.condition._eval(compressor,cached,depth);if(condition===this.condition)return this;var node=condition?this.consequent:this.alternative;var value=node._eval(compressor,cached,depth);return value===node?this:value});def(AST_SymbolRef,function(compressor,cached,depth){var fixed=this.fixed_value();if(!fixed)return this;var value;if(cached.indexOf(fixed)>=0){value=fixed._eval()}else{this._eval=return_this;value=fixed._eval(compressor,cached,depth);delete this._eval;if(value===fixed)return this;fixed._eval=function(){return value};cached.push(fixed)}if(value&&typeof value=="object"){var escaped=this.definition().escaped;if(escaped&&depth>escaped)return this}return value});var global_objs={Array:Array,Math:Math,Number:Number,Object:Object,String:String};var static_values={Math:["E","LN10","LN2","LOG2E","LOG10E","PI","SQRT1_2","SQRT2"],Number:["MAX_VALUE","MIN_VALUE","NaN","NEGATIVE_INFINITY","POSITIVE_INFINITY"]};convert_to_predicate(static_values);def(AST_PropAccess,function(compressor,cached,depth){if(compressor.option("unsafe")){var key=this.property;if(key instanceof AST_Node){key=key._eval(compressor,cached,depth);if(key===this.property)return this}var exp=this.expression;var val;if(is_undeclared_ref(exp)){var static_value=static_values[exp.name];if(!static_value||!static_value[key])return this;val=global_objs[exp.name]}else{val=exp._eval(compressor,cached,depth+1);if(!val||val===exp||!HOP(val,key))return this;if(typeof val=="function")switch(key){case"name":return val.node.name?val.node.name.name:"";case"length":return val.node.argnames.length;default:return this}}return val[key]}return this});def(AST_Call,function(compressor,cached,depth){var exp=this.expression;if(compressor.option("unsafe")&&exp instanceof AST_PropAccess){var key=exp.property;if(key instanceof AST_Node){key=key._eval(compressor,cached,depth);if(key===exp.property)return this}var val;var e=exp.expression;if(is_undeclared_ref(e)){var static_fn=static_fns[e.name];if(!static_fn||!static_fn[key])return this;val=global_objs[e.name]}else{val=e._eval(compressor,cached,depth+1);if(val===e||!val)return this;var native_fn=native_fns[val.constructor.name];if(!native_fn||!native_fn[key])return this}var args=[];for(var i=0,len=this.args.length;i<len;i++){var arg=this.args[i];var value=arg._eval(compressor,cached,depth);if(arg===value)return this;args.push(value)}try{return val[key].apply(val,args)}catch(ex){compressor.warn("Error evaluating {code} [{file}:{line},{col}]",{code:this.print_to_string(),file:this.start.file,line:this.start.line,col:this.start.col})}}return this});def(AST_New,return_this)})(function(node,func){node.DEFMETHOD("_eval",func)});(function(def){function basic_negation(exp){return make_node(AST_UnaryPrefix,exp,{operator:"!",expression:exp})}function best(orig,alt,first_in_statement){var negated=basic_negation(orig);if(first_in_statement){var stat=make_node(AST_SimpleStatement,alt,{body:alt});return best_of_expression(negated,stat)===stat?alt:negated}return best_of_expression(negated,alt)}def(AST_Node,function(){return basic_negation(this)});def(AST_Statement,function(){throw new Error("Cannot negate a statement")});def(AST_Function,function(){return basic_negation(this)});def(AST_UnaryPrefix,function(){if(this.operator=="!")return this.expression;return basic_negation(this)});def(AST_Sequence,function(compressor){var expressions=this.expressions.slice();expressions.push(expressions.pop().negate(compressor));return make_sequence(this,expressions)});def(AST_Conditional,function(compressor,first_in_statement){var self=this.clone();self.consequent=self.consequent.negate(compressor);self.alternative=self.alternative.negate(compressor);return best(this,self,first_in_statement)});def(AST_Binary,function(compressor,first_in_statement){var self=this.clone(),op=this.operator;if(compressor.option("unsafe_comps")){switch(op){case"<=":self.operator=">";return self;case"<":self.operator=">=";return self;case">=":self.operator="<";return self;case">":self.operator="<=";return self}}switch(op){case"==":self.operator="!=";return self;case"!=":self.operator="==";return self;case"===":self.operator="!==";return self;case"!==":self.operator="===";return self;case"&&":self.operator="||";self.left=self.left.negate(compressor,first_in_statement);self.right=self.right.negate(compressor);return best(this,self,first_in_statement);case"||":self.operator="&&";self.left=self.left.negate(compressor,first_in_statement);self.right=self.right.negate(compressor);return best(this,self,first_in_statement)}return basic_negation(this)})})(function(node,func){node.DEFMETHOD("negate",function(compressor,first_in_statement){return func.call(this,compressor,first_in_statement)})});var global_pure_fns=makePredicate("Boolean decodeURI decodeURIComponent Date encodeURI encodeURIComponent Error escape EvalError isFinite isNaN Number Object parseFloat parseInt RangeError ReferenceError String SyntaxError TypeError unescape URIError");AST_Call.DEFMETHOD("is_expr_pure",function(compressor){if(compressor.option("unsafe")){var expr=this.expression;if(is_undeclared_ref(expr)&&global_pure_fns[expr.name])return true;if(expr instanceof AST_Dot&&is_undeclared_ref(expr.expression)){var static_fn=static_fns[expr.expression.name];return static_fn&&static_fn[expr.property]}}return this.pure||!compressor.pure_funcs(this)});AST_Node.DEFMETHOD("is_call_pure",return_false);AST_Dot.DEFMETHOD("is_call_pure",function(compressor){if(!compressor.option("unsafe"))return;var expr=this.expression;var map;if(expr instanceof AST_Array){map=native_fns.Array}else if(expr.is_boolean(compressor)){map=native_fns.Boolean}else if(expr.is_number(compressor)){map=native_fns.Number}else if(expr instanceof AST_RegExp){map=native_fns.RegExp}else if(expr.is_string(compressor)){map=native_fns.String}else if(!this.may_throw_on_access(compressor)){map=native_fns.Object}return map&&map[this.property]});(function(def){function any(list,compressor){for(var i=list.length;--i>=0;)if(list[i].has_side_effects(compressor))return true;return false}def(AST_Node,return_true);def(AST_Array,function(compressor){return any(this.elements,compressor)});def(AST_Assign,return_true);def(AST_Binary,function(compressor){return this.left.has_side_effects(compressor)||this.right.has_side_effects(compressor)});def(AST_Block,function(compressor){return any(this.body,compressor)});def(AST_Call,function(compressor){if(!this.is_expr_pure(compressor)&&(!this.expression.is_call_pure(compressor)||this.expression.has_side_effects(compressor))){return true}return any(this.args,compressor)});def(AST_Case,function(compressor){return this.expression.has_side_effects(compressor)||any(this.body,compressor)});def(AST_Conditional,function(compressor){return this.condition.has_side_effects(compressor)||this.consequent.has_side_effects(compressor)||this.alternative.has_side_effects(compressor)});def(AST_Constant,return_false);def(AST_Definitions,function(compressor){return any(this.definitions,compressor)});def(AST_Dot,function(compressor){return this.expression.may_throw_on_access(compressor)||this.expression.has_side_effects(compressor)});def(AST_EmptyStatement,return_false);def(AST_If,function(compressor){return this.condition.has_side_effects(compressor)||this.body&&this.body.has_side_effects(compressor)||this.alternative&&this.alternative.has_side_effects(compressor)});def(AST_LabeledStatement,function(compressor){return this.body.has_side_effects(compressor)});def(AST_Lambda,return_false);def(AST_Object,function(compressor){return any(this.properties,compressor)});def(AST_ObjectProperty,function(compressor){return this.value.has_side_effects(compressor)});def(AST_Sub,function(compressor){return this.expression.may_throw_on_access(compressor)||this.expression.has_side_effects(compressor)||this.property.has_side_effects(compressor)});def(AST_Sequence,function(compressor){return any(this.expressions,compressor)});def(AST_SimpleStatement,function(compressor){return this.body.has_side_effects(compressor)});def(AST_Switch,function(compressor){return this.expression.has_side_effects(compressor)||any(this.body,compressor)});def(AST_SymbolDeclaration,return_false);def(AST_SymbolRef,function(compressor){return!this.is_declared(compressor)});def(AST_This,return_false);def(AST_Try,function(compressor){return any(this.body,compressor)||this.bcatch&&this.bcatch.has_side_effects(compressor)||this.bfinally&&this.bfinally.has_side_effects(compressor)});def(AST_Unary,function(compressor){return unary_side_effects[this.operator]||this.expression.has_side_effects(compressor)});def(AST_VarDef,function(compressor){return this.value})})(function(node,func){node.DEFMETHOD("has_side_effects",func)});(function(def){def(AST_Node,return_true);def(AST_Constant,return_false);def(AST_EmptyStatement,return_false);def(AST_Lambda,return_false);def(AST_SymbolDeclaration,return_false);def(AST_This,return_false);function any(list,compressor){for(var i=list.length;--i>=0;)if(list[i].may_throw(compressor))return true;return false}def(AST_Array,function(compressor){return any(this.elements,compressor)});def(AST_Assign,function(compressor){if(this.right.may_throw(compressor))return true;if(!compressor.has_directive("use strict")&&this.operator=="="&&this.left instanceof AST_SymbolRef){return false}return this.left.may_throw(compressor)});def(AST_Binary,function(compressor){return this.left.may_throw(compressor)||this.right.may_throw(compressor)});def(AST_Block,function(compressor){return any(this.body,compressor)});def(AST_Call,function(compressor){if(any(this.args,compressor))return true;if(this.is_expr_pure(compressor))return false;if(this.expression.may_throw(compressor))return true;return!(this.expression instanceof AST_Lambda)||any(this.expression.body,compressor)});def(AST_Case,function(compressor){return this.expression.may_throw(compressor)||any(this.body,compressor)});def(AST_Conditional,function(compressor){return this.condition.may_throw(compressor)||this.consequent.may_throw(compressor)||this.alternative.may_throw(compressor)});def(AST_Definitions,function(compressor){return any(this.definitions,compressor)});def(AST_Dot,function(compressor){return this.expression.may_throw_on_access(compressor)||this.expression.may_throw(compressor)});def(AST_If,function(compressor){return this.condition.may_throw(compressor)||this.body&&this.body.may_throw(compressor)||this.alternative&&this.alternative.may_throw(compressor)});def(AST_LabeledStatement,function(compressor){return this.body.may_throw(compressor)});def(AST_Object,function(compressor){return any(this.properties,compressor)});def(AST_ObjectProperty,function(compressor){return this.value.may_throw(compressor)});def(AST_Return,function(compressor){return this.value&&this.value.may_throw(compressor)});def(AST_Sequence,function(compressor){return any(this.expressions,compressor)});def(AST_SimpleStatement,function(compressor){return this.body.may_throw(compressor)});def(AST_Sub,function(compressor){return this.expression.may_throw_on_access(compressor)||this.expression.may_throw(compressor)||this.property.may_throw(compressor)});def(AST_Switch,function(compressor){return this.expression.may_throw(compressor)||any(this.body,compressor)});def(AST_SymbolRef,function(compressor){return!this.is_declared(compressor)});def(AST_Try,function(compressor){return this.bcatch?this.bcatch.may_throw(compressor):any(this.body,compressor)||this.bfinally&&this.bfinally.may_throw(compressor)});def(AST_Unary,function(compressor){if(this.operator=="typeof"&&this.expression instanceof AST_SymbolRef)return false;return this.expression.may_throw(compressor)});def(AST_VarDef,function(compressor){if(!this.value)return false;return this.value.may_throw(compressor)})})(function(node,func){node.DEFMETHOD("may_throw",func)});(function(def){function all(list){for(var i=list.length;--i>=0;)if(!list[i].is_constant_expression())return false;return true}def(AST_Node,return_false);def(AST_Constant,return_true);def(AST_Lambda,function(scope){var self=this;var result=true;self.walk(new TreeWalker(function(node){if(!result)return true;if(node instanceof AST_SymbolRef){if(self.inlined){result=false;return true}var def=node.definition();if(member(def,self.enclosed)&&!self.variables.has(def.name)){if(scope){var scope_def=scope.find_variable(node);if(def.undeclared?!scope_def:scope_def===def){result="f";return true}}result=false}return true}}));return result});def(AST_Unary,function(){return this.expression.is_constant_expression()});def(AST_Binary,function(){return this.left.is_constant_expression()&&this.right.is_constant_expression()});def(AST_Array,function(){return all(this.elements)});def(AST_Object,function(){return all(this.properties)});def(AST_ObjectProperty,function(){return this.value.is_constant_expression()})})(function(node,func){node.DEFMETHOD("is_constant_expression",func)});function aborts(thing){return thing&&thing.aborts()}(function(def){def(AST_Statement,return_null);def(AST_Jump,return_this);function block_aborts(){var n=this.body.length;return n>0&&aborts(this.body[n-1])}def(AST_BlockStatement,block_aborts);def(AST_SwitchBranch,block_aborts);def(AST_If,function(){return this.alternative&&aborts(this.body)&&aborts(this.alternative)&&this})})(function(node,func){node.DEFMETHOD("aborts",func)});var directives=makePredicate(["use asm","use strict"]);OPT(AST_Directive,function(self,compressor){if(compressor.option("directives")&&(!directives[self.value]||compressor.has_directive(self.value)!==self)){return make_node(AST_EmptyStatement,self)}return self});OPT(AST_Debugger,function(self,compressor){if(compressor.option("drop_debugger"))return make_node(AST_EmptyStatement,self);return self});OPT(AST_LabeledStatement,function(self,compressor){if(self.body instanceof AST_Break&&compressor.loopcontrol_target(self.body)===self.body){return make_node(AST_EmptyStatement,self)}return self.label.references.length==0?self.body:self});OPT(AST_Block,function(self,compressor){tighten_body(self.body,compressor);return self});OPT(AST_BlockStatement,function(self,compressor){tighten_body(self.body,compressor);switch(self.body.length){case 1:return self.body[0];case 0:return make_node(AST_EmptyStatement,self)}return self});OPT(AST_Lambda,function(self,compressor){tighten_body(self.body,compressor);if(compressor.option("side_effects")&&self.body.length==1&&self.body[0]===compressor.has_directive("use strict")){self.body.length=0}return self});AST_Scope.DEFMETHOD("drop_unused",function(compressor){if(!compressor.option("unused"))return;if(compressor.has_directive("use asm"))return;var self=this;if(self.pinned())return;var drop_funcs=!(self instanceof AST_Toplevel)||compressor.toplevel.funcs;var drop_vars=!(self instanceof AST_Toplevel)||compressor.toplevel.vars;var assign_as_unused=/keep_assign/.test(compressor.option("unused"))?return_false:function(node,props){var sym;if(node instanceof AST_Assign&&(node.write_only||node.operator=="=")){sym=node.left}else if(node instanceof AST_Unary&&node.write_only){sym=node.expression}if(!/strict/.test(compressor.option("pure_getters")))return sym instanceof AST_SymbolRef&&sym;while(sym instanceof AST_PropAccess&&!sym.expression.may_throw_on_access(compressor)){if(sym instanceof AST_Sub)props.unshift(sym.property);sym=sym.expression}return sym instanceof AST_SymbolRef&&all(sym.definition().orig,function(sym){return!(sym instanceof AST_SymbolLambda)})&&sym};var in_use=[];var in_use_ids=Object.create(null);var fixed_ids=Object.create(null);var value_read=Object.create(null);var value_modified=Object.create(null);if(self instanceof AST_Toplevel&&compressor.top_retain){self.variables.each(function(def){if(compressor.top_retain(def)&&!(def.id in in_use_ids)){in_use_ids[def.id]=true;in_use.push(def)}})}var var_defs_by_id=new Dictionary;var initializations=new Dictionary;var scope=this;var tw=new TreeWalker(function(node,descend){if(node instanceof AST_Lambda&&node.uses_arguments&&!tw.has_directive("use strict")){node.argnames.forEach(function(argname){var def=argname.definition();if(!(def.id in in_use_ids)){in_use_ids[def.id]=true;in_use.push(def)}})}if(node===self)return;if(node instanceof AST_Defun){var node_def=node.name.definition();if(!drop_funcs&&scope===self){if(!(node_def.id in in_use_ids)){in_use_ids[node_def.id]=true;in_use.push(node_def)}}initializations.add(node_def.id,node);return true}if(node instanceof AST_SymbolFunarg&&scope===self){var_defs_by_id.add(node.definition().id,node)}if(node instanceof AST_Definitions&&scope===self){node.definitions.forEach(function(def){var node_def=def.name.definition();if(def.name instanceof AST_SymbolVar){var_defs_by_id.add(node_def.id,def)}if(!drop_vars){if(!(node_def.id in in_use_ids)){in_use_ids[node_def.id]=true;in_use.push(node_def)}}if(def.value){initializations.add(node_def.id,def.value);if(def.value.has_side_effects(compressor)){def.value.walk(tw)}if(!node_def.chained&&def.name.fixed_value()===def.value){fixed_ids[node_def.id]=def}}});return true}return scan_ref_scoped(node,descend)});self.walk(tw);tw=new TreeWalker(scan_ref_scoped);for(var i=0;i<in_use.length;i++){var init=initializations.get(in_use[i].id);if(init)init.forEach(function(init){init.walk(tw)})}var drop_fn_name=compressor.option("keep_fnames")?return_false:compressor.option("ie8")?function(def){return!compressor.exposed(def)&&!def.references.length}:function(def){return!(def.id in in_use_ids)||def.orig.length>1};var tt=new TreeTransformer(function(node,descend,in_list){var parent=tt.parent();if(drop_vars){var props=[],sym=assign_as_unused(node,props);if(sym){var def=sym.definition();var in_use=def.id in in_use_ids;var value=null;if(node instanceof AST_Assign){if(!in_use||node.left===sym&&def.id in fixed_ids&&fixed_ids[def.id]!==node){value=node.right}}else if(!in_use){value=make_node(AST_Number,node,{value:0})}if(value){props.push(value);return maintain_this_binding(compressor,parent,node,make_sequence(node,props.map(function(prop){return prop.transform(tt)})))}}}if(scope!==self)return;if(node instanceof AST_Function&&node.name&&drop_fn_name(node.name.definition())){node.name=null}if(node instanceof AST_Lambda&&!(node instanceof AST_Accessor)){var trim=!compressor.option("keep_fargs");for(var a=node.argnames,i=a.length;--i>=0;){var sym=a[i];if(!(sym.definition().id in in_use_ids)){sym.__unused=true;if(trim){a.pop();compressor[sym.unreferenced()?"warn":"info"]("Dropping unused function argument {name} [{file}:{line},{col}]",template(sym))}}else{trim=false}}}if(drop_funcs&&node instanceof AST_Defun&&node!==self){var def=node.name.definition();if(!(def.id in in_use_ids)){compressor[node.name.unreferenced()?"warn":"info"]("Dropping unused function {name} [{file}:{line},{col}]",template(node.name));def.eliminated++;return make_node(AST_EmptyStatement,node)}}if(node instanceof AST_Definitions&&!(parent instanceof AST_ForIn&&parent.init===node)){var body=[],head=[],tail=[];var side_effects=[];node.definitions.forEach(function(def){if(def.value)def.value=def.value.transform(tt);var sym=def.name.definition();if(!drop_vars||sym.id in in_use_ids){if(def.value&&sym.id in fixed_ids&&fixed_ids[sym.id]!==def){def.value=def.value.drop_side_effect_free(compressor)}if(def.name instanceof AST_SymbolVar){var var_defs=var_defs_by_id.get(sym.id);if(var_defs.length>1&&(!def.value||sym.orig.indexOf(def.name)>sym.eliminated)){compressor.warn("Dropping duplicated definition of variable {name} [{file}:{line},{col}]",template(def.name));if(def.value){var ref=make_node(AST_SymbolRef,def.name,def.name);sym.references.push(ref);var assign=make_node(AST_Assign,def,{operator:"=",left:ref,right:def.value});if(fixed_ids[sym.id]===def){fixed_ids[sym.id]=assign}side_effects.push(assign.transform(tt))}remove(var_defs,def);sym.eliminated++;return}}if(def.value){if(side_effects.length>0){if(tail.length>0){side_effects.push(def.value);def.value=make_sequence(def.value,side_effects)}else{body.push(make_node(AST_SimpleStatement,node,{body:make_sequence(node,side_effects)}))}side_effects=[]}tail.push(def)}else{head.push(def)}}else if(sym.orig[0]instanceof AST_SymbolCatch){var value=def.value&&def.value.drop_side_effect_free(compressor);if(value)side_effects.push(value);def.value=null;head.push(def)}else{var value=def.value&&def.value.drop_side_effect_free(compressor);if(value){compressor.warn("Side effects in initialization of unused variable {name} [{file}:{line},{col}]",template(def.name));side_effects.push(value)}else{compressor[def.name.unreferenced()?"warn":"info"]("Dropping unused variable {name} [{file}:{line},{col}]",template(def.name))}sym.eliminated++}});if(head.length>0||tail.length>0){node.definitions=head.concat(tail);body.push(node)}if(side_effects.length>0){body.push(make_node(AST_SimpleStatement,node,{body:make_sequence(node,side_effects)}))}switch(body.length){case 0:return in_list?MAP.skip:make_node(AST_EmptyStatement,node);case 1:return body[0];default:return in_list?MAP.splice(body):make_node(AST_BlockStatement,node,{body:body})}}if(node instanceof AST_For){descend(node,this);var block;if(node.init instanceof AST_BlockStatement){block=node.init;node.init=block.body.pop();block.body.push(node)}if(node.init instanceof AST_SimpleStatement){node.init=node.init.body}else if(is_empty(node.init)){node.init=null}return!block?node:in_list?MAP.splice(block.body):block}if(node instanceof AST_LabeledStatement&&node.body instanceof AST_For){descend(node,this);if(node.body instanceof AST_BlockStatement){var block=node.body;node.body=block.body.pop();block.body.push(node);return in_list?MAP.splice(block.body):block}return node}if(node instanceof AST_Scope){var save_scope=scope;scope=node;descend(node,this);scope=save_scope;return node}function template(sym){return{name:sym.name,file:sym.start.file,line:sym.start.line,col:sym.start.col}}});self.transform(tt);function verify_safe_usage(def,read,modified){if(def.id in in_use_ids)return;if(read&&modified){in_use_ids[def.id]=true;in_use.push(def)}else{value_read[def.id]=read;value_modified[def.id]=modified}}function scan_ref_scoped(node,descend){var node_def,props=[],sym=assign_as_unused(node,props);if(sym&&self.variables.get(sym.name)===(node_def=sym.definition())){props.forEach(function(prop){prop.walk(tw)});if(node instanceof AST_Assign){node.right.walk(tw);if(node.left===sym){if(!node_def.chained&&sym.fixed_value()===node.right){fixed_ids[node_def.id]=node}if(!node.write_only){verify_safe_usage(node_def,true,value_modified[node_def.id])}}else{var fixed=sym.fixed_value();if(!fixed||!fixed.is_constant()){verify_safe_usage(node_def,value_read[node_def.id],true)}}}return true}if(node instanceof AST_SymbolRef){node_def=node.definition();if(!(node_def.id in in_use_ids)){in_use_ids[node_def.id]=true;in_use.push(node_def)}return true}if(node instanceof AST_Scope){var save_scope=scope;scope=node;descend();scope=save_scope;return true}}});AST_Scope.DEFMETHOD("hoist_declarations",function(compressor){if(compressor.has_directive("use asm"))return;var hoist_funs=compressor.option("hoist_funs");var hoist_vars=compressor.option("hoist_vars");var self=this;if(hoist_vars){var var_decl=0;self.walk(new TreeWalker(function(node){if(var_decl>1)return true;if(node instanceof AST_Scope&&node!==self)return true;if(node instanceof AST_Var){var_decl++;return true}}));if(var_decl<=1)hoist_vars=false}if(!hoist_funs&&!hoist_vars)return;var dirs=[];var hoisted=[];var vars=new Dictionary,vars_found=0;var tt=new TreeTransformer(function(node){if(node===self)return;if(node instanceof AST_Directive){dirs.push(node);return make_node(AST_EmptyStatement,node)}if(hoist_funs&&node instanceof AST_Defun&&(tt.parent()===self||!compressor.has_directive("use strict"))){hoisted.push(node);return make_node(AST_EmptyStatement,node)}if(hoist_vars&&node instanceof AST_Var){node.definitions.forEach(function(def){vars.set(def.name.name,def);++vars_found});var seq=node.to_assignments(compressor);var p=tt.parent();if(p instanceof AST_ForIn&&p.init===node){if(seq)return seq;var def=node.definitions[0].name;return make_node(AST_SymbolRef,def,def)}if(p instanceof AST_For&&p.init===node)return seq;if(!seq)return make_node(AST_EmptyStatement,node);return make_node(AST_SimpleStatement,node,{body:seq})}if(node instanceof AST_Scope)return node});self.transform(tt);if(vars_found>0){var defs=[];vars.each(function(def,name){if(self instanceof AST_Lambda&&!all(self.argnames,function(argname){return argname.name!=name})){vars.del(name)}else{def=def.clone();def.value=null;defs.push(def);vars.set(name,def)}});if(defs.length>0){for(var i=0;i<self.body.length;){if(self.body[i]instanceof AST_SimpleStatement){var expr=self.body[i].body,sym,assign;if(expr instanceof AST_Assign&&expr.operator=="="&&(sym=expr.left)instanceof AST_Symbol&&vars.has(sym.name)){var def=vars.get(sym.name);if(def.value)break;def.value=expr.right;remove(defs,def);defs.push(def);self.body.splice(i,1);continue}if(expr instanceof AST_Sequence&&(assign=expr.expressions[0])instanceof AST_Assign&&assign.operator=="="&&(sym=assign.left)instanceof AST_Symbol&&vars.has(sym.name)){var def=vars.get(sym.name);if(def.value)break;def.value=assign.right;remove(defs,def);defs.push(def);self.body[i].body=make_sequence(expr,expr.expressions.slice(1));continue}}if(self.body[i]instanceof AST_EmptyStatement){self.body.splice(i,1);continue}if(self.body[i]instanceof AST_BlockStatement){var tmp=[i,1].concat(self.body[i].body);self.body.splice.apply(self.body,tmp);continue}break}defs=make_node(AST_Var,self,{definitions:defs});hoisted.push(defs)}}self.body=dirs.concat(hoisted,self.body)});AST_Scope.DEFMETHOD("var_names",function(){var var_names=this._var_names;if(!var_names){this._var_names=var_names=Object.create(null);this.enclosed.forEach(function(def){var_names[def.name]=true});this.variables.each(function(def,name){var_names[name]=true})}return var_names});AST_Scope.DEFMETHOD("make_var_name",function(prefix){var var_names=this.var_names();prefix=prefix.replace(/(?:^[^a-z_$]|[^a-z0-9_$])/gi,"_");var name=prefix;for(var i=0;var_names[name];i++)name=prefix+"$"+i;var_names[name]=true;return name});AST_Scope.DEFMETHOD("hoist_properties",function(compressor){if(!compressor.option("hoist_props")||compressor.has_directive("use asm"))return;var self=this;var top_retain=self instanceof AST_Toplevel&&compressor.top_retain||return_false;var defs_by_id=Object.create(null);self.transform(new TreeTransformer(function(node,descend){if(node instanceof AST_Assign&&node.operator=="="&&node.write_only&&can_hoist(node.left,node.right,1)){descend(node,this);var defs=new Dictionary;var assignments=[];var decls=[];node.right.properties.forEach(function(prop){var decl=make_sym(node.left,prop.key);decls.push(make_node(AST_VarDef,node,{name:decl,value:null}));var sym=make_node(AST_SymbolRef,node,{name:decl.name,scope:self,thedef:decl.definition()});sym.reference({});assignments.push(make_node(AST_Assign,node,{operator:"=",left:sym,right:prop.value}))});defs_by_id[node.left.definition().id]=defs;self.body.splice(self.body.indexOf(this.stack[1])+1,0,make_node(AST_Var,node,{definitions:decls}));return make_sequence(node,assignments)}if(node instanceof AST_VarDef&&can_hoist(node.name,node.value,0)){descend(node,this);var defs=new Dictionary;var var_defs=[];node.value.properties.forEach(function(prop){var_defs.push(make_node(AST_VarDef,node,{name:make_sym(node.name,prop.key),value:prop.value}))});defs_by_id[node.name.definition().id]=defs;return MAP.splice(var_defs)}if(node instanceof AST_PropAccess&&node.expression instanceof AST_SymbolRef){var defs=defs_by_id[node.expression.definition().id];if(defs){var def=defs.get(get_value(node.property));var sym=make_node(AST_SymbolRef,node,{name:def.name,scope:node.expression.scope,thedef:def});sym.reference({});return sym}}function can_hoist(sym,right,count){if(sym.scope!==self)return;var def=sym.definition();if(def.assignments!=count)return;if(def.direct_access)return;if(def.escaped==1)return;if(def.references.length==count)return;if(def.single_use)return;if(top_retain(def))return;if(sym.fixed_value()!==right)return;return right instanceof AST_Object}function make_sym(sym,key){var new_var=make_node(AST_SymbolVar,sym,{name:self.make_var_name(sym.name+"_"+key),scope:self});var def=self.def_variable(new_var);defs.set(key,def);self.enclosed.push(def);return new_var}}))});(function(def){function trim(nodes,compressor,first_in_statement){var len=nodes.length;if(!len)return null;var ret=[],changed=false;for(var i=0;i<len;i++){var node=nodes[i].drop_side_effect_free(compressor,first_in_statement);changed|=node!==nodes[i];if(node){ret.push(node);first_in_statement=false}}return changed?ret.length?ret:null:nodes}def(AST_Node,return_this);def(AST_Accessor,return_null);def(AST_Array,function(compressor,first_in_statement){var values=trim(this.elements,compressor,first_in_statement);return values&&make_sequence(this,values)});def(AST_Assign,function(compressor){var left=this.left;if(left.has_side_effects(compressor)||compressor.has_directive("use strict")&&left instanceof AST_PropAccess&&left.expression.is_constant()){return this}this.write_only=true;if(root_expr(left).is_constant_expression(compressor.find_parent(AST_Scope))){return this.right.drop_side_effect_free(compressor)}return this});def(AST_Binary,function(compressor,first_in_statement){var right=this.right.drop_side_effect_free(compressor);if(!right)return this.left.drop_side_effect_free(compressor,first_in_statement);if(lazy_op[this.operator]){if(right===this.right)return this;var node=this.clone();node.right=right;return node}else{var left=this.left.drop_side_effect_free(compressor,first_in_statement);if(!left)return this.right.drop_side_effect_free(compressor,first_in_statement);return make_sequence(this,[left,right])}});def(AST_Call,function(compressor,first_in_statement){if(!this.is_expr_pure(compressor)){if(this.expression.is_call_pure(compressor)){var exprs=this.args.slice();exprs.unshift(this.expression.expression);exprs=trim(exprs,compressor,first_in_statement);return exprs&&make_sequence(this,exprs)}if(this.expression instanceof AST_Function&&(!this.expression.name||!this.expression.name.definition().references.length)){var node=this.clone();var exp=node.expression;exp.process_expression(false,compressor);exp.walk(new TreeWalker(function(node){if(node instanceof AST_Return&&node.value){node.value=node.value.drop_side_effect_free(compressor);return true}if(node instanceof AST_Scope&&node!==exp)return true}));return node}return this}if(this.pure){compressor.warn("Dropping __PURE__ call [{file}:{line},{col}]",this.start)}var args=trim(this.args,compressor,first_in_statement);return args&&make_sequence(this,args)});def(AST_Conditional,function(compressor){var consequent=this.consequent.drop_side_effect_free(compressor);var alternative=this.alternative.drop_side_effect_free(compressor);if(consequent===this.consequent&&alternative===this.alternative)return this;if(!consequent)return alternative?make_node(AST_Binary,this,{operator:"||",left:this.condition,right:alternative}):this.condition.drop_side_effect_free(compressor);if(!alternative)return make_node(AST_Binary,this,{operator:"&&",left:this.condition,right:consequent});var node=this.clone();node.consequent=consequent;node.alternative=alternative;return node});def(AST_Constant,return_null);def(AST_Dot,function(compressor,first_in_statement){if(this.expression.may_throw_on_access(compressor))return this;return this.expression.drop_side_effect_free(compressor,first_in_statement)});def(AST_Function,function(compressor){return this.name&&compressor.option("ie8")?this:null});def(AST_Unary,function(compressor,first_in_statement){if(unary_side_effects[this.operator]){this.write_only=!this.expression.has_side_effects(compressor);return this}if(this.operator=="typeof"&&this.expression instanceof AST_SymbolRef)return null;var expression=this.expression.drop_side_effect_free(compressor,first_in_statement);if(first_in_statement&&expression&&is_iife_call(expression)){if(expression===this.expression&&this.operator=="!")return this;return expression.negate(compressor,first_in_statement)}return expression});def(AST_Object,function(compressor,first_in_statement){var values=trim(this.properties,compressor,first_in_statement);return values&&make_sequence(this,values)});def(AST_ObjectProperty,function(compressor,first_in_statement){return this.value.drop_side_effect_free(compressor,first_in_statement)});def(AST_Sequence,function(compressor){var last=this.tail_node();var expr=last.drop_side_effect_free(compressor);if(expr===last)return this;var expressions=this.expressions.slice(0,-1);if(expr)expressions.push(expr);return make_sequence(this,expressions)});def(AST_Sub,function(compressor,first_in_statement){if(this.expression.may_throw_on_access(compressor))return this;var expression=this.expression.drop_side_effect_free(compressor,first_in_statement);if(!expression)return this.property.drop_side_effect_free(compressor,first_in_statement);var property=this.property.drop_side_effect_free(compressor);if(!property)return expression;return make_sequence(this,[expression,property])});def(AST_SymbolRef,function(compressor){return this.is_declared(compressor)?null:this});def(AST_This,return_null)})(function(node,func){node.DEFMETHOD("drop_side_effect_free",func)});OPT(AST_SimpleStatement,function(self,compressor){if(compressor.option("side_effects")){var body=self.body;var node=body.drop_side_effect_free(compressor,true);if(!node){compressor.warn("Dropping side-effect-free statement [{file}:{line},{col}]",self.start);return make_node(AST_EmptyStatement,self)}if(node!==body){return make_node(AST_SimpleStatement,self,{body:node})}}return self});OPT(AST_While,function(self,compressor){return compressor.option("loops")?make_node(AST_For,self,self).optimize(compressor):self});function has_break_or_continue(loop,parent){var found=false;var tw=new TreeWalker(function(node){if(found||node instanceof AST_Scope)return true;if(node instanceof AST_LoopControl&&tw.loopcontrol_target(node)===loop){return found=true}});if(parent instanceof AST_LabeledStatement)tw.push(parent);tw.push(loop);loop.body.walk(tw);return found}OPT(AST_Do,function(self,compressor){if(!compressor.option("loops"))return self;var cond=self.condition.is_truthy()||self.condition.tail_node().evaluate(compressor);if(!(cond instanceof AST_Node)){if(cond)return make_node(AST_For,self,{body:make_node(AST_BlockStatement,self.body,{body:[self.body,make_node(AST_SimpleStatement,self.condition,{body:self.condition})]})}).optimize(compressor);if(!has_break_or_continue(self,compressor.parent())){return make_node(AST_BlockStatement,self.body,{body:[self.body,make_node(AST_SimpleStatement,self.condition,{body:self.condition})]}).optimize(compressor)}}if(self.body instanceof AST_SimpleStatement)return make_node(AST_For,self,{condition:make_sequence(self.condition,[self.body.body,self.condition]),body:make_node(AST_EmptyStatement,self)}).optimize(compressor);return self});function if_break_in_loop(self,compressor){var first=self.body instanceof AST_BlockStatement?self.body.body[0]:self.body;if(compressor.option("dead_code")&&is_break(first)){var body=[];if(self.init instanceof AST_Statement){body.push(self.init)}else if(self.init){body.push(make_node(AST_SimpleStatement,self.init,{body:self.init}))}if(self.condition){body.push(make_node(AST_SimpleStatement,self.condition,{body:self.condition}))}extract_declarations_from_unreachable_code(compressor,self.body,body);return make_node(AST_BlockStatement,self,{body:body})}if(first instanceof AST_If){if(is_break(first.body)){if(self.condition){self.condition=make_node(AST_Binary,self.condition,{left:self.condition,operator:"&&",right:first.condition.negate(compressor)})}else{self.condition=first.condition.negate(compressor)}drop_it(first.alternative)}else if(is_break(first.alternative)){if(self.condition){self.condition=make_node(AST_Binary,self.condition,{left:self.condition,operator:"&&",right:first.condition})}else{self.condition=first.condition}drop_it(first.body)}}return self;function is_break(node){return node instanceof AST_Break&&compressor.loopcontrol_target(node)===compressor.self()}function drop_it(rest){rest=as_statement_array(rest);if(self.body instanceof AST_BlockStatement){self.body=self.body.clone();self.body.body=rest.concat(self.body.body.slice(1));self.body=self.body.transform(compressor)}else{self.body=make_node(AST_BlockStatement,self.body,{body:rest}).transform(compressor)}self=if_break_in_loop(self,compressor)}}OPT(AST_For,function(self,compressor){if(!compressor.option("loops"))return self;if(compressor.option("side_effects")&&self.init){self.init=self.init.drop_side_effect_free(compressor)}if(self.condition){var cond=self.condition.evaluate(compressor);if(!(cond instanceof AST_Node)){if(cond)self.condition=null;else if(!compressor.option("dead_code")){var orig=self.condition;self.condition=make_node_from_constant(cond,self.condition);self.condition=best_of_expression(self.condition.transform(compressor),orig)}}if(cond instanceof AST_Node){cond=self.condition.is_truthy()||self.condition.tail_node().evaluate(compressor)}if(!cond){if(compressor.option("dead_code")){var body=[];extract_declarations_from_unreachable_code(compressor,self.body,body);if(self.init instanceof AST_Statement){body.push(self.init)}else if(self.init){body.push(make_node(AST_SimpleStatement,self.init,{body:self.init}))}body.push(make_node(AST_SimpleStatement,self.condition,{body:self.condition}));return make_node(AST_BlockStatement,self,{body:body}).optimize(compressor)}}else if(self.condition&&!(cond instanceof AST_Node)){self.body=make_node(AST_BlockStatement,self.body,{body:[make_node(AST_SimpleStatement,self.condition,{body:self.condition}),self.body]});self.condition=null}}return if_break_in_loop(self,compressor)});OPT(AST_If,function(self,compressor){if(is_empty(self.alternative))self.alternative=null;if(!compressor.option("conditionals"))return self;var cond=self.condition.evaluate(compressor);if(!compressor.option("dead_code")&&!(cond instanceof AST_Node)){var orig=self.condition;self.condition=make_node_from_constant(cond,orig);self.condition=best_of_expression(self.condition.transform(compressor),orig)}if(compressor.option("dead_code")){if(cond instanceof AST_Node){cond=self.condition.is_truthy()||self.condition.tail_node().evaluate(compressor)}if(!cond){compressor.warn("Condition always false [{file}:{line},{col}]",self.condition.start);var body=[];extract_declarations_from_unreachable_code(compressor,self.body,body);body.push(make_node(AST_SimpleStatement,self.condition,{body:self.condition}));if(self.alternative)body.push(self.alternative);return make_node(AST_BlockStatement,self,{body:body}).optimize(compressor)}else if(!(cond instanceof AST_Node)){compressor.warn("Condition always true [{file}:{line},{col}]",self.condition.start);var body=[];if(self.alternative){extract_declarations_from_unreachable_code(compressor,self.alternative,body)}body.push(make_node(AST_SimpleStatement,self.condition,{body:self.condition}));body.push(self.body);return make_node(AST_BlockStatement,self,{body:body}).optimize(compressor)}}var negated=self.condition.negate(compressor);var self_condition_length=self.condition.print_to_string().length;var negated_length=negated.print_to_string().length;var negated_is_best=negated_length<self_condition_length;if(self.alternative&&negated_is_best){negated_is_best=false;self.condition=negated;var tmp=self.body;self.body=self.alternative||make_node(AST_EmptyStatement,self);self.alternative=tmp}if(is_empty(self.body)&&is_empty(self.alternative)){return make_node(AST_SimpleStatement,self.condition,{body:self.condition.clone()}).optimize(compressor)}if(self.body instanceof AST_SimpleStatement&&self.alternative instanceof AST_SimpleStatement){return make_node(AST_SimpleStatement,self,{body:make_node(AST_Conditional,self,{condition:self.condition,consequent:self.body.body,alternative:self.alternative.body})}).optimize(compressor)}if(is_empty(self.alternative)&&self.body instanceof AST_SimpleStatement){if(self_condition_length===negated_length&&!negated_is_best&&self.condition instanceof AST_Binary&&self.condition.operator=="||"){negated_is_best=true}if(negated_is_best)return make_node(AST_SimpleStatement,self,{body:make_node(AST_Binary,self,{operator:"||",left:negated,right:self.body.body})}).optimize(compressor);return make_node(AST_SimpleStatement,self,{body:make_node(AST_Binary,self,{operator:"&&",left:self.condition,right:self.body.body})}).optimize(compressor)}if(self.body instanceof AST_EmptyStatement&&self.alternative instanceof AST_SimpleStatement){return make_node(AST_SimpleStatement,self,{body:make_node(AST_Binary,self,{operator:"||",left:self.condition,right:self.alternative.body})}).optimize(compressor)}if(self.body instanceof AST_Exit&&self.alternative instanceof AST_Exit&&self.body.TYPE==self.alternative.TYPE){return make_node(self.body.CTOR,self,{value:make_node(AST_Conditional,self,{condition:self.condition,consequent:self.body.value||make_node(AST_Undefined,self.body),alternative:self.alternative.value||make_node(AST_Undefined,self.alternative)}).transform(compressor)}).optimize(compressor)}if(self.body instanceof AST_If&&!self.body.alternative&&!self.alternative){self=make_node(AST_If,self,{condition:make_node(AST_Binary,self.condition,{operator:"&&",left:self.condition,right:self.body.condition}),body:self.body.body,alternative:null})}if(aborts(self.body)){if(self.alternative){var alt=self.alternative;self.alternative=null;return make_node(AST_BlockStatement,self,{body:[self,alt]}).optimize(compressor)}}if(aborts(self.alternative)){var body=self.body;self.body=self.alternative;self.condition=negated_is_best?negated:self.condition.negate(compressor);self.alternative=null;return make_node(AST_BlockStatement,self,{body:[self,body]}).optimize(compressor)}return self});OPT(AST_Switch,function(self,compressor){if(!compressor.option("switches"))return self;var branch;var value=self.expression.evaluate(compressor);if(!(value instanceof AST_Node)){var orig=self.expression;self.expression=make_node_from_constant(value,orig);self.expression=best_of_expression(self.expression.transform(compressor),orig)}if(!compressor.option("dead_code"))return self;if(value instanceof AST_Node){value=self.expression.tail_node().evaluate(compressor)}var decl=[];var body=[];var default_branch;var exact_match;for(var i=0,len=self.body.length;i<len&&!exact_match;i++){branch=self.body[i];if(branch instanceof AST_Default){if(!default_branch){default_branch=branch}else{eliminate_branch(branch,body[body.length-1])}}else if(!(value instanceof AST_Node)){var exp=branch.expression.evaluate(compressor);if(!(exp instanceof AST_Node)&&exp!==value){eliminate_branch(branch,body[body.length-1]);continue}if(exp instanceof AST_Node)exp=branch.expression.tail_node().evaluate(compressor);if(exp===value){exact_match=branch;if(default_branch){var default_index=body.indexOf(default_branch);body.splice(default_index,1);eliminate_branch(default_branch,body[default_index-1]);default_branch=null}}}if(aborts(branch)){var prev=body[body.length-1];if(aborts(prev)&&prev.body.length==branch.body.length&&make_node(AST_BlockStatement,prev,prev).equivalent_to(make_node(AST_BlockStatement,branch,branch))){prev.body=[]}}body.push(branch)}while(i<len)eliminate_branch(self.body[i++],body[body.length-1]);if(body.length>0){body[0].body=decl.concat(body[0].body)}self.body=body;while(branch=body[body.length-1]){var stat=branch.body[branch.body.length-1];if(stat instanceof AST_Break&&compressor.loopcontrol_target(stat)===self)branch.body.pop();if(branch.body.length||branch instanceof AST_Case&&(default_branch||branch.expression.has_side_effects(compressor)))break;if(body.pop()===default_branch)default_branch=null}if(body.length==0){return make_node(AST_BlockStatement,self,{body:decl.concat(make_node(AST_SimpleStatement,self.expression,{body:self.expression}))}).optimize(compressor)}if(body.length==1&&(body[0]===exact_match||body[0]===default_branch)){var has_break=false;var tw=new TreeWalker(function(node){if(has_break||node instanceof AST_Lambda||node instanceof AST_SimpleStatement)return true;if(node instanceof AST_Break&&tw.loopcontrol_target(node)===self)has_break=true});self.walk(tw);if(!has_break){var statements=body[0].body.slice();var exp=body[0].expression;if(exp)statements.unshift(make_node(AST_SimpleStatement,exp,{body:exp}));statements.unshift(make_node(AST_SimpleStatement,self.expression,{body:self.expression}));return make_node(AST_BlockStatement,self,{body:statements}).optimize(compressor)}}return self;function eliminate_branch(branch,prev){if(prev&&!aborts(prev)){prev.body=prev.body.concat(branch.body)}else{extract_declarations_from_unreachable_code(compressor,branch,decl)}}});OPT(AST_Try,function(self,compressor){tighten_body(self.body,compressor);if(self.bcatch&&self.bfinally&&all(self.bfinally.body,is_empty))self.bfinally=null;if(compressor.option("dead_code")&&all(self.body,is_empty)){var body=[];if(self.bcatch){extract_declarations_from_unreachable_code(compressor,self.bcatch,body);body.forEach(function(stat){if(!(stat instanceof AST_Definitions))return;stat.definitions.forEach(function(var_def){var def=var_def.name.definition().redefined();if(!def)return;var_def.name=var_def.name.clone();var_def.name.thedef=def})})}if(self.bfinally)body=body.concat(self.bfinally.body);return make_node(AST_BlockStatement,self,{body:body}).optimize(compressor)}return self});AST_Definitions.DEFMETHOD("remove_initializers",function(){this.definitions.forEach(function(def){def.value=null})});AST_Definitions.DEFMETHOD("to_assignments",function(compressor){var reduce_vars=compressor.option("reduce_vars");var assignments=this.definitions.reduce(function(a,def){if(def.value){var name=make_node(AST_SymbolRef,def.name,def.name);a.push(make_node(AST_Assign,def,{operator:"=",left:name,right:def.value}));if(reduce_vars)name.definition().fixed=false}def=def.name.definition();def.eliminated++;def.replaced--;return a},[]);if(assignments.length==0)return null;return make_sequence(this,assignments)});OPT(AST_Definitions,function(self,compressor){if(self.definitions.length==0)return make_node(AST_EmptyStatement,self);return self});AST_Call.DEFMETHOD("lift_sequences",function(compressor){if(!compressor.option("sequences"))return this;var exp=this.expression;if(!(exp instanceof AST_Sequence))return this;var tail=exp.tail_node();if(needs_unbinding(compressor,tail)&&!(this instanceof AST_New))return this;var expressions=exp.expressions.slice(0,-1);var node=this.clone();node.expression=tail;expressions.push(node);return make_sequence(this,expressions).optimize(compressor)});OPT(AST_Call,function(self,compressor){var seq=self.lift_sequences(compressor);if(seq!==self){return seq}var exp=self.expression;var fn=exp;if(compressor.option("reduce_vars")&&fn instanceof AST_SymbolRef){fn=fn.fixed_value()}var is_func=fn instanceof AST_Lambda;if(compressor.option("unused")&&is_func&&!fn.uses_arguments&&!fn.pinned()){var pos=0,last=0;for(var i=0,len=self.args.length;i<len;i++){var trim=i>=fn.argnames.length;if(trim||fn.argnames[i].__unused){var node=self.args[i].drop_side_effect_free(compressor);if(node){self.args[pos++]=node}else if(!trim){self.args[pos++]=make_node(AST_Number,self.args[i],{value:0});continue}}else{self.args[pos++]=self.args[i]}last=pos}self.args.length=last}if(compressor.option("unsafe")){if(is_undeclared_ref(exp))switch(exp.name){case"Array":if(self.args.length!=1){return make_node(AST_Array,self,{elements:self.args}).optimize(compressor)}break;case"Object":if(self.args.length==0){return make_node(AST_Object,self,{properties:[]})}break;case"String":if(self.args.length==0)return make_node(AST_String,self,{value:""});if(self.args.length<=1)return make_node(AST_Binary,self,{left:self.args[0],operator:"+",right:make_node(AST_String,self,{value:""})}).optimize(compressor);break;case"Number":if(self.args.length==0)return make_node(AST_Number,self,{value:0});if(self.args.length==1)return make_node(AST_UnaryPrefix,self,{expression:self.args[0],operator:"+"}).optimize(compressor);case"Boolean":if(self.args.length==0)return make_node(AST_False,self);if(self.args.length==1)return make_node(AST_UnaryPrefix,self,{expression:make_node(AST_UnaryPrefix,self,{expression:self.args[0],operator:"!"}),operator:"!"}).optimize(compressor);break;case"RegExp":var params=[];if(all(self.args,function(arg){var value=arg.evaluate(compressor);params.unshift(value);return arg!==value})){try{return best_of(compressor,self,make_node(AST_RegExp,self,{value:RegExp.apply(RegExp,params)}))}catch(ex){compressor.warn("Error converting {expr} [{file}:{line},{col}]",{expr:self.print_to_string(),file:self.start.file,line:self.start.line,col:self.start.col})}}break}else if(exp instanceof AST_Dot)switch(exp.property){case"toString":if(self.args.length==0&&!exp.expression.may_throw_on_access(compressor)){return make_node(AST_Binary,self,{left:make_node(AST_String,self,{value:""}),operator:"+",right:exp.expression}).optimize(compressor)}break;case"join":if(exp.expression instanceof AST_Array)EXIT:{var separator;if(self.args.length>0){separator=self.args[0].evaluate(compressor);if(separator===self.args[0])break EXIT}var elements=[];var consts=[];exp.expression.elements.forEach(function(el){var value=el.evaluate(compressor);if(value!==el){consts.push(value)}else{if(consts.length>0){elements.push(make_node(AST_String,self,{value:consts.join(separator)}));consts.length=0}elements.push(el)}});if(consts.length>0){elements.push(make_node(AST_String,self,{value:consts.join(separator)}))}if(elements.length==0)return make_node(AST_String,self,{value:""});if(elements.length==1){if(elements[0].is_string(compressor)){return elements[0]}return make_node(AST_Binary,elements[0],{operator:"+",left:make_node(AST_String,self,{value:""}),right:elements[0]})}if(separator==""){var first;if(elements[0].is_string(compressor)||elements[1].is_string(compressor)){first=elements.shift()}else{first=make_node(AST_String,self,{value:""})}return elements.reduce(function(prev,el){return make_node(AST_Binary,el,{operator:"+",left:prev,right:el})},first).optimize(compressor)}var node=self.clone();node.expression=node.expression.clone();node.expression.expression=node.expression.expression.clone();node.expression.expression.elements=elements;return best_of(compressor,self,node)}break;case"charAt":if(exp.expression.is_string(compressor)){var arg=self.args[0];var index=arg?arg.evaluate(compressor):0;if(index!==arg){return make_node(AST_Sub,exp,{expression:exp.expression,property:make_node_from_constant(index|0,arg||exp)}).optimize(compressor)}}break;case"apply":if(self.args.length==2&&self.args[1]instanceof AST_Array){var args=self.args[1].elements.slice();args.unshift(self.args[0]);return make_node(AST_Call,self,{expression:make_node(AST_Dot,exp,{expression:exp.expression,property:"call"}),args:args}).optimize(compressor)}break;case"call":var func=exp.expression;if(func instanceof AST_SymbolRef){func=func.fixed_value()}if(func instanceof AST_Lambda&&!func.contains_this()){return(self.args.length?make_sequence(this,[self.args[0],make_node(AST_Call,self,{expression:exp.expression,args:self.args.slice(1)})]):make_node(AST_Call,self,{expression:exp.expression,args:[]})).optimize(compressor)}break}}if(compressor.option("unsafe_Function")&&is_undeclared_ref(exp)&&exp.name=="Function"){if(self.args.length==0)return make_node(AST_Function,self,{argnames:[],body:[]});if(all(self.args,function(x){return x instanceof AST_String})){try{var code="n(function("+self.args.slice(0,-1).map(function(arg){return arg.value}).join(",")+"){"+self.args[self.args.length-1].value+"})";var ast=parse(code);var mangle={ie8:compressor.option("ie8")};ast.figure_out_scope(mangle);var comp=new Compressor(compressor.options);ast=ast.transform(comp);ast.figure_out_scope(mangle);ast.compute_char_frequency(mangle);ast.mangle_names(mangle);var fun;ast.walk(new TreeWalker(function(node){if(fun)return true;if(node instanceof AST_Lambda){fun=node;return true}}));var code=OutputStream();AST_BlockStatement.prototype._codegen.call(fun,fun,code);self.args=[make_node(AST_String,self,{value:fun.argnames.map(function(arg){return arg.print_to_string()}).join(",")}),make_node(AST_String,self.args[self.args.length-1],{value:code.get().replace(/^\{|\}$/g,"")})];return self}catch(ex){if(ex instanceof JS_Parse_Error){compressor.warn("Error parsing code passed to new Function [{file}:{line},{col}]",self.args[self.args.length-1].start);compressor.warn(ex.toString())}else{throw ex}}}}var stat=is_func&&fn.body[0];var can_inline=compressor.option("inline")&&!self.is_expr_pure(compressor);if(can_inline&&stat instanceof AST_Return){var value=stat.value;if(!value||value.is_constant_expression()){if(value){value=value.clone(true)}else{value=make_node(AST_Undefined,self)}var args=self.args.concat(value);return make_sequence(self,args).optimize(compressor)}}if(is_func){var def,value,scope,in_loop,level=-1;if(can_inline&&!fn.uses_arguments&&!fn.pinned()&&!(fn.name&&fn instanceof AST_Function)&&(value=can_flatten_body(stat))&&(exp===fn||compressor.option("unused")&&(def=exp.definition()).references.length==1&&!recursive_ref(compressor,def)&&fn.is_constant_expression(exp.scope))&&!self.pure&&!fn.contains_this()&&can_inject_symbols()){fn._squeezed=true;return make_sequence(self,flatten_fn()).optimize(compressor)}if(compressor.option("side_effects")&&all(fn.body,is_empty)){var args=self.args.concat(make_node(AST_Undefined,self));return make_sequence(self,args).optimize(compressor)}}if(compressor.option("drop_console")){if(exp instanceof AST_PropAccess){var name=exp.expression;while(name.expression){name=name.expression}if(is_undeclared_ref(name)&&name.name=="console"){return make_node(AST_Undefined,self).optimize(compressor)}}}if(compressor.option("negate_iife")&&compressor.parent()instanceof AST_SimpleStatement&&is_iife_call(self)){return self.negate(compressor,true)}var ev=self.evaluate(compressor);if(ev!==self){ev=make_node_from_constant(ev,self).optimize(compressor);return best_of(compressor,ev,self)}return self;function return_value(stat){if(!stat)return make_node(AST_Undefined,self);if(stat instanceof AST_Return){if(!stat.value)return make_node(AST_Undefined,self);return stat.value.clone(true)}if(stat instanceof AST_SimpleStatement){return make_node(AST_UnaryPrefix,stat,{operator:"void",expression:stat.body.clone(true)})}}function can_flatten_body(stat){var len=fn.body.length;if(compressor.option("inline")<3){return len==1&&return_value(stat)}stat=null;for(var i=0;i<len;i++){var line=fn.body[i];if(line instanceof AST_Var){if(stat&&!all(line.definitions,function(var_def){return!var_def.value})){return false}}else if(line instanceof AST_EmptyStatement){continue}else if(stat){return false}else{stat=line}}return return_value(stat)}function can_inject_args(catches,safe_to_inject){for(var i=0,len=fn.argnames.length;i<len;i++){var arg=fn.argnames[i];if(arg.__unused)continue;if(!safe_to_inject||catches[arg.name]||identifier_atom[arg.name]||scope.var_names()[arg.name]){return false}if(in_loop)in_loop.push(arg.definition())}return true}function can_inject_vars(catches,safe_to_inject){var len=fn.body.length;for(var i=0;i<len;i++){var stat=fn.body[i];if(!(stat instanceof AST_Var))continue;if(!safe_to_inject)return false;for(var j=stat.definitions.length;--j>=0;){var name=stat.definitions[j].name;if(catches[name.name]||identifier_atom[name.name]||scope.var_names()[name.name]){return false}if(in_loop)in_loop.push(name.definition())}}return true}function can_inject_symbols(){var catches=Object.create(null);do{scope=compressor.parent(++level);if(scope instanceof AST_Catch){catches[scope.argname.name]=true}else if(scope instanceof AST_IterationStatement){in_loop=[]}else if(scope instanceof AST_SymbolRef){if(scope.fixed_value()instanceof AST_Scope)return false}}while(!(scope instanceof AST_Scope));var safe_to_inject=!(scope instanceof AST_Toplevel)||compressor.toplevel.vars;var inline=compressor.option("inline");if(!can_inject_vars(catches,inline>=3&&safe_to_inject))return false;if(!can_inject_args(catches,inline>=2&&safe_to_inject))return false;return!in_loop||in_loop.length==0||!is_reachable(fn,in_loop)}function append_var(decls,expressions,name,value){var def=name.definition();scope.variables.set(name.name,def);scope.enclosed.push(def);if(!scope.var_names()[name.name]){scope.var_names()[name.name]=true;decls.push(make_node(AST_VarDef,name,{name:name,value:null}))}var sym=make_node(AST_SymbolRef,name,name);def.references.push(sym);if(value)expressions.push(make_node(AST_Assign,self,{operator:"=",left:sym,right:value}))}function flatten_args(decls,expressions){var len=fn.argnames.length;for(var i=self.args.length;--i>=len;){expressions.push(self.args[i])}for(i=len;--i>=0;){var name=fn.argnames[i];var value=self.args[i];if(name.__unused||scope.var_names()[name.name]){if(value)expressions.push(value)}else{var symbol=make_node(AST_SymbolVar,name,name);name.definition().orig.push(symbol);if(!value&&in_loop)value=make_node(AST_Undefined,self);append_var(decls,expressions,symbol,value)}}decls.reverse();expressions.reverse()}function flatten_vars(decls,expressions){var pos=expressions.length;for(var i=0,lines=fn.body.length;i<lines;i++){var stat=fn.body[i];if(!(stat instanceof AST_Var))continue;for(var j=0,defs=stat.definitions.length;j<defs;j++){var var_def=stat.definitions[j];var name=var_def.name;var redef=name.definition().redefined();if(redef){name=name.clone();name.thedef=redef}append_var(decls,expressions,name,var_def.value);if(in_loop&&all(fn.argnames,function(argname){return argname.name!=name.name})){var def=fn.variables.get(name.name);var sym=make_node(AST_SymbolRef,name,name);def.references.push(sym);expressions.splice(pos++,0,make_node(AST_Assign,var_def,{operator:"=",left:sym,right:make_node(AST_Undefined,name)}))}}}}function flatten_fn(){var decls=[];var expressions=[];flatten_args(decls,expressions);flatten_vars(decls,expressions);expressions.push(value);if(decls.length){i=scope.body.indexOf(compressor.parent(level-1))+1;scope.body.splice(i,0,make_node(AST_Var,fn,{definitions:decls}))}return expressions}});OPT(AST_New,function(self,compressor){var seq=self.lift_sequences(compressor);if(seq!==self){return seq}if(compressor.option("unsafe")){var exp=self.expression;if(is_undeclared_ref(exp)){switch(exp.name){case"Object":case"RegExp":case"Function":case"Error":case"Array":return make_node(AST_Call,self,self).transform(compressor)}}}return self});OPT(AST_Sequence,function(self,compressor){if(!compressor.option("side_effects"))return self;var expressions=[];filter_for_side_effects();var end=expressions.length-1;trim_right_for_undefined();if(end==0){self=maintain_this_binding(compressor,compressor.parent(),compressor.self(),expressions[0]);if(!(self instanceof AST_Sequence))self=self.optimize(compressor);return self}self.expressions=expressions;return self;function filter_for_side_effects(){var first=first_in_statement(compressor);var last=self.expressions.length-1;self.expressions.forEach(function(expr,index){if(index<last)expr=expr.drop_side_effect_free(compressor,first);if(expr){merge_sequence(expressions,expr);first=false}})}function trim_right_for_undefined(){while(end>0&&is_undefined(expressions[end],compressor))end--;if(end<expressions.length-1){expressions[end]=make_node(AST_UnaryPrefix,self,{operator:"void",expression:expressions[end]});expressions.length=end+1}}});AST_Unary.DEFMETHOD("lift_sequences",function(compressor){if(compressor.option("sequences")&&this.expression instanceof AST_Sequence){var x=this.expression.expressions.slice();var e=this.clone();e.expression=x.pop();x.push(e);return make_sequence(this,x).optimize(compressor)}return this});OPT(AST_UnaryPostfix,function(self,compressor){return self.lift_sequences(compressor)});OPT(AST_UnaryPrefix,function(self,compressor){var e=self.expression;if(self.operator=="delete"&&!(e instanceof AST_SymbolRef||e instanceof AST_PropAccess||is_identifier_atom(e))){if(e instanceof AST_Sequence){e=e.expressions.slice();e.push(make_node(AST_True,self));return make_sequence(self,e).optimize(compressor)}return make_sequence(self,[e,make_node(AST_True,self)]).optimize(compressor)}var seq=self.lift_sequences(compressor);if(seq!==self){return seq}if(compressor.option("side_effects")&&self.operator=="void"){e=e.drop_side_effect_free(compressor);if(e){self.expression=e;return self}else{return make_node(AST_Undefined,self).optimize(compressor)}}if(compressor.option("booleans")){if(self.operator=="!"&&e.is_truthy()){return make_sequence(self,[e,make_node(AST_False,self)]).optimize(compressor)}else if(compressor.in_boolean_context())switch(self.operator){case"!":if(e instanceof AST_UnaryPrefix&&e.operator=="!"){return e.expression}if(e instanceof AST_Binary){self=best_of(compressor,self,e.negate(compressor,first_in_statement(compressor)))}break;case"typeof":compressor.warn("Boolean expression always true [{file}:{line},{col}]",self.start);return(e instanceof AST_SymbolRef?make_node(AST_True,self):make_sequence(self,[e,make_node(AST_True,self)])).optimize(compressor)}}if(self.operator=="-"&&e instanceof AST_Infinity){e=e.transform(compressor)}if(e instanceof AST_Binary&&(self.operator=="+"||self.operator=="-")&&(e.operator=="*"||e.operator=="/"||e.operator=="%")){return make_node(AST_Binary,self,{operator:e.operator,left:make_node(AST_UnaryPrefix,e.left,{operator:self.operator,expression:e.left}),right:e.right})}if(self.operator!="-"||!(e instanceof AST_Number||e instanceof AST_Infinity)){var ev=self.evaluate(compressor);if(ev!==self){ev=make_node_from_constant(ev,self).optimize(compressor);return best_of(compressor,ev,self)}}return self});AST_Binary.DEFMETHOD("lift_sequences",function(compressor){if(compressor.option("sequences")){if(this.left instanceof AST_Sequence){var x=this.left.expressions.slice();var e=this.clone();e.left=x.pop();x.push(e);return make_sequence(this,x).optimize(compressor)}if(this.right instanceof AST_Sequence&&!this.left.has_side_effects(compressor)){var assign=this.operator=="="&&this.left instanceof AST_SymbolRef;var x=this.right.expressions;var last=x.length-1;for(var i=0;i<last;i++){if(!assign&&x[i].has_side_effects(compressor))break}if(i==last){x=x.slice();var e=this.clone();e.right=x.pop();x.push(e);return make_sequence(this,x).optimize(compressor)}else if(i>0){var e=this.clone();e.right=make_sequence(this.right,x.slice(i));x=x.slice(0,i);x.push(e);return make_sequence(this,x).optimize(compressor)}}}return this});var commutativeOperators=makePredicate("== === != !== * & | ^");function is_object(node){return node instanceof AST_Array||node instanceof AST_Lambda||node instanceof AST_Object}OPT(AST_Binary,function(self,compressor){function reversible(){return self.left.is_constant()||self.right.is_constant()||!self.left.has_side_effects(compressor)&&!self.right.has_side_effects(compressor)}function reverse(op){if(reversible()){if(op)self.operator=op;var tmp=self.left;self.left=self.right;self.right=tmp}}if(commutativeOperators[self.operator]){if(self.right.is_constant()&&!self.left.is_constant()){if(!(self.left instanceof AST_Binary&&PRECEDENCE[self.left.operator]>=PRECEDENCE[self.operator])){reverse()}}}self=self.lift_sequences(compressor);if(compressor.option("comparisons"))switch(self.operator){case"===":case"!==":var is_strict_comparison=true;if(self.left.is_string(compressor)&&self.right.is_string(compressor)||self.left.is_number(compressor)&&self.right.is_number(compressor)||self.left.is_boolean(compressor)&&self.right.is_boolean(compressor)||self.left.equivalent_to(self.right)){self.operator=self.operator.substr(0,2)}case"==":case"!=":if(!is_strict_comparison&&is_undefined(self.left,compressor)){self.left=make_node(AST_Null,self.left)}else if(compressor.option("typeofs")&&self.left instanceof AST_String&&self.left.value=="undefined"&&self.right instanceof AST_UnaryPrefix&&self.right.operator=="typeof"){var expr=self.right.expression;if(expr instanceof AST_SymbolRef?expr.is_declared(compressor):!(expr instanceof AST_PropAccess&&compressor.option("ie8"))){self.right=expr;self.left=make_node(AST_Undefined,self.left).optimize(compressor);if(self.operator.length==2)self.operator+="="}}else if(self.left instanceof AST_SymbolRef&&self.right instanceof AST_SymbolRef&&self.left.definition()===self.right.definition()&&is_object(self.left.fixed_value())){return make_node(self.operator[0]=="="?AST_True:AST_False,self)}break;case"&&":case"||":var lhs=self.left;if(lhs.operator==self.operator){lhs=lhs.right}if(lhs instanceof AST_Binary&&lhs.operator==(self.operator=="&&"?"!==":"===")&&self.right instanceof AST_Binary&&lhs.operator==self.right.operator&&(is_undefined(lhs.left,compressor)&&self.right.left instanceof AST_Null||lhs.left instanceof AST_Null&&is_undefined(self.right.left,compressor))&&!lhs.right.has_side_effects(compressor)&&lhs.right.equivalent_to(self.right.right)){var combined=make_node(AST_Binary,self,{operator:lhs.operator.slice(0,-1),left:make_node(AST_Null,self),right:lhs.right});if(lhs!==self.left){combined=make_node(AST_Binary,self,{operator:self.operator,left:self.left.left,right:combined})}return combined}break}if(compressor.option("booleans")&&self.operator=="+"&&compressor.in_boolean_context()){var ll=self.left.evaluate(compressor);var rr=self.right.evaluate(compressor);if(ll&&typeof ll=="string"){compressor.warn("+ in boolean context always true [{file}:{line},{col}]",self.start);return make_sequence(self,[self.right,make_node(AST_True,self)]).optimize(compressor)}if(rr&&typeof rr=="string"){compressor.warn("+ in boolean context always true [{file}:{line},{col}]",self.start);return make_sequence(self,[self.left,make_node(AST_True,self)]).optimize(compressor)}}if(compressor.option("comparisons")&&self.is_boolean(compressor)){if(!(compressor.parent()instanceof AST_Binary)||compressor.parent()instanceof AST_Assign){var negated=make_node(AST_UnaryPrefix,self,{operator:"!",expression:self.negate(compressor,first_in_statement(compressor))});self=best_of(compressor,self,negated)}switch(self.operator){case">":reverse("<");break;case">=":reverse("<=");break}}if(self.operator=="+"){if(self.right instanceof AST_String&&self.right.getValue()==""&&self.left.is_string(compressor)){return self.left}if(self.left instanceof AST_String&&self.left.getValue()==""&&self.right.is_string(compressor)){return self.right}if(self.left instanceof AST_Binary&&self.left.operator=="+"&&self.left.left instanceof AST_String&&self.left.left.getValue()==""&&self.right.is_string(compressor)){self.left=self.left.right;return self.transform(compressor)}}if(compressor.option("evaluate")){switch(self.operator){case"&&":var ll=fuzzy_eval(self.left);if(!ll){compressor.warn("Condition left of && always false [{file}:{line},{col}]",self.start);return maintain_this_binding(compressor,compressor.parent(),compressor.self(),self.left).optimize(compressor)}else if(!(ll instanceof AST_Node)){compressor.warn("Condition left of && always true [{file}:{line},{col}]",self.start);return make_sequence(self,[self.left,self.right]).optimize(compressor)}var rr=self.right.evaluate(compressor);if(!rr){if(compressor.option("booleans")&&compressor.in_boolean_context()){compressor.warn("Boolean && always false [{file}:{line},{col}]",self.start);return make_sequence(self,[self.left,make_node(AST_False,self)]).optimize(compressor)}else self.falsy=true}else if(!(rr instanceof AST_Node)){var parent=compressor.parent();if(parent.operator=="&&"&&parent.left===compressor.self()||compressor.option("booleans")&&compressor.in_boolean_context()){compressor.warn("Dropping side-effect-free && [{file}:{line},{col}]",self.start);return self.left.optimize(compressor)}}if(self.left.operator=="||"){var lr=self.left.right.evaluate(compressor);if(!lr)return make_node(AST_Conditional,self,{condition:self.left.left,consequent:self.right,alternative:self.left.right}).optimize(compressor)}break;case"||":var ll=fuzzy_eval(self.left);if(!ll){compressor.warn("Condition left of || always false [{file}:{line},{col}]",self.start);return make_sequence(self,[self.left,self.right]).optimize(compressor)}else if(!(ll instanceof AST_Node)){compressor.warn("Condition left of || always true [{file}:{line},{col}]",self.start);return maintain_this_binding(compressor,compressor.parent(),compressor.self(),self.left).optimize(compressor)}var rr=self.right.evaluate(compressor);if(!rr){var parent=compressor.parent();if(parent.operator=="||"&&parent.left===compressor.self()||compressor.option("booleans")&&compressor.in_boolean_context()){compressor.warn("Dropping side-effect-free || [{file}:{line},{col}]",self.start);return self.left.optimize(compressor)}}else if(!(rr instanceof AST_Node)){if(compressor.option("booleans")&&compressor.in_boolean_context()){compressor.warn("Boolean || always true [{file}:{line},{col}]",self.start);return make_sequence(self,[self.left,make_node(AST_True,self)]).optimize(compressor)}else self.truthy=true}if(self.left.operator=="&&"){var lr=self.left.right.evaluate(compressor);if(lr&&!(lr instanceof AST_Node))return make_node(AST_Conditional,self,{condition:self.left.left,consequent:self.left.right,alternative:self.right}).optimize(compressor)}break}var associative=true;switch(self.operator){case"+":if(self.left instanceof AST_Constant&&self.right instanceof AST_Binary&&self.right.operator=="+"&&self.right.left instanceof AST_Constant&&self.right.is_string(compressor)){self=make_node(AST_Binary,self,{operator:"+",left:make_node(AST_String,self.left,{value:""+self.left.getValue()+self.right.left.getValue(),start:self.left.start,end:self.right.left.end}),right:self.right.right})}if(self.right instanceof AST_Constant&&self.left instanceof AST_Binary&&self.left.operator=="+"&&self.left.right instanceof AST_Constant&&self.left.is_string(compressor)){self=make_node(AST_Binary,self,{operator:"+",left:self.left.left,right:make_node(AST_String,self.right,{value:""+self.left.right.getValue()+self.right.getValue(),start:self.left.right.start,end:self.right.end})})}if(self.left instanceof AST_Binary&&self.left.operator=="+"&&self.left.is_string(compressor)&&self.left.right instanceof AST_Constant&&self.right instanceof AST_Binary&&self.right.operator=="+"&&self.right.left instanceof AST_Constant&&self.right.is_string(compressor)){self=make_node(AST_Binary,self,{operator:"+",left:make_node(AST_Binary,self.left,{operator:"+",left:self.left.left,right:make_node(AST_String,self.left.right,{value:""+self.left.right.getValue()+self.right.left.getValue(),start:self.left.right.start,end:self.right.left.end})}),right:self.right.right})}if(self.right instanceof AST_UnaryPrefix&&self.right.operator=="-"&&self.left.is_number(compressor)){self=make_node(AST_Binary,self,{operator:"-",left:self.left,right:self.right.expression});break}if(self.left instanceof AST_UnaryPrefix&&self.left.operator=="-"&&reversible()&&self.right.is_number(compressor)){self=make_node(AST_Binary,self,{operator:"-",left:self.right,right:self.left.expression});break}case"*":associative=compressor.option("unsafe_math");case"&":case"|":case"^":if(self.left.is_number(compressor)&&self.right.is_number(compressor)&&reversible()&&!(self.left instanceof AST_Binary&&self.left.operator!=self.operator&&PRECEDENCE[self.left.operator]>=PRECEDENCE[self.operator])){var reversed=make_node(AST_Binary,self,{operator:self.operator,left:self.right,right:self.left});if(self.right instanceof AST_Constant&&!(self.left instanceof AST_Constant)){self=best_of(compressor,reversed,self)}else{self=best_of(compressor,self,reversed)}}if(associative&&self.is_number(compressor)){if(self.right instanceof AST_Binary&&self.right.operator==self.operator){self=make_node(AST_Binary,self,{operator:self.operator,left:make_node(AST_Binary,self.left,{operator:self.operator,left:self.left,right:self.right.left,start:self.left.start,end:self.right.left.end}),right:self.right.right})}if(self.right instanceof AST_Constant&&self.left instanceof AST_Binary&&self.left.operator==self.operator){if(self.left.left instanceof AST_Constant){self=make_node(AST_Binary,self,{operator:self.operator,left:make_node(AST_Binary,self.left,{operator:self.operator,left:self.left.left,right:self.right,start:self.left.left.start,end:self.right.end}),right:self.left.right})}else if(self.left.right instanceof AST_Constant){self=make_node(AST_Binary,self,{operator:self.operator,left:make_node(AST_Binary,self.left,{operator:self.operator,left:self.left.right,right:self.right,start:self.left.right.start,end:self.right.end}),right:self.left.left})}}if(self.left instanceof AST_Binary&&self.left.operator==self.operator&&self.left.right instanceof AST_Constant&&self.right instanceof AST_Binary&&self.right.operator==self.operator&&self.right.left instanceof AST_Constant){self=make_node(AST_Binary,self,{operator:self.operator,left:make_node(AST_Binary,self.left,{operator:self.operator,left:make_node(AST_Binary,self.left.left,{operator:self.operator,left:self.left.right,right:self.right.left,start:self.left.right.start,end:self.right.left.end}),right:self.left.left}),right:self.right.right})}}}}if(self.right instanceof AST_Binary&&self.right.operator==self.operator&&(lazy_op[self.operator]||self.operator=="+"&&(self.right.left.is_string(compressor)||self.left.is_string(compressor)&&self.right.right.is_string(compressor)))){self.left=make_node(AST_Binary,self.left,{operator:self.operator,left:self.left,right:self.right.left});self.right=self.right.right;return self.transform(compressor)}var ev=self.evaluate(compressor);if(ev!==self){ev=make_node_from_constant(ev,self).optimize(compressor);return best_of(compressor,ev,self)}return self;function fuzzy_eval(node){if(node.truthy)return true;if(node.falsy)return false;if(node.is_truthy())return true;return node.evaluate(compressor)}});function recursive_ref(compressor,def){var node;for(var i=0;node=compressor.parent(i);i++){if(node instanceof AST_Lambda){var name=node.name;if(name&&name.definition()===def)break}}return node}OPT(AST_SymbolRef,function(self,compressor){if(!compressor.option("ie8")&&is_undeclared_ref(self)&&!(self.scope.uses_with&&compressor.find_parent(AST_With))){switch(self.name){case"undefined":return make_node(AST_Undefined,self).optimize(compressor);case"NaN":return make_node(AST_NaN,self).optimize(compressor);case"Infinity":return make_node(AST_Infinity,self).optimize(compressor)}}var parent=compressor.parent();if(compressor.option("reduce_vars")&&is_lhs(self,parent)!==self){var def=self.definition();var fixed=self.fixed_value();var single_use=def.single_use&&!(parent instanceof AST_Call&&parent.is_expr_pure(compressor));if(single_use&&fixed instanceof AST_Lambda){if(def.scope!==self.scope&&(!compressor.option("reduce_funcs")||def.escaped==1||fixed.inlined)){single_use=false}else if(recursive_ref(compressor,def)){single_use=false}else if(def.scope!==self.scope||def.orig[0]instanceof AST_SymbolFunarg){single_use=fixed.is_constant_expression(self.scope);if(single_use=="f"){var scope=self.scope;do{if(scope instanceof AST_Defun||scope instanceof AST_Function){scope.inlined=true}}while(scope=scope.parent_scope)}}}if(single_use&&fixed){def.single_use=false;if(fixed instanceof AST_Defun){fixed._squeezed=true;fixed=make_node(AST_Function,fixed,fixed);fixed.name=make_node(AST_SymbolLambda,fixed.name,fixed.name)}var value;if(def.recursive_refs>0){value=fixed.clone(true);var defun_def=value.name.definition();var lambda_def=value.variables.get(value.name.name);var name=lambda_def&&lambda_def.orig[0];if(!(name instanceof AST_SymbolLambda)){name=make_node(AST_SymbolLambda,value.name,value.name);name.scope=value;value.name=name;lambda_def=value.def_function(name)}value.walk(new TreeWalker(function(node){if(!(node instanceof AST_SymbolRef))return;var def=node.definition();if(def===defun_def){node.thedef=lambda_def;lambda_def.references.push(node)}else{def.single_use=false}}))}else{value=fixed.optimize(compressor);if(value===fixed)value=fixed.clone(true)}return value}if(fixed&&def.should_replace===undefined){var init;if(fixed instanceof AST_This){if(!(def.orig[0]instanceof AST_SymbolFunarg)&&all(def.references,function(ref){return def.scope===ref.scope})){init=fixed}}else{var ev=fixed.evaluate(compressor);if(ev!==fixed&&(compressor.option("unsafe_regexp")||!(ev instanceof RegExp))){init=make_node_from_constant(ev,fixed)}}if(init){var value_length=init.optimize(compressor).print_to_string().length;var fn;if(has_symbol_ref(fixed)){fn=function(){var result=init.optimize(compressor);return result===init?result.clone(true):result}}else{value_length=Math.min(value_length,fixed.print_to_string().length);fn=function(){var result=best_of_expression(init.optimize(compressor),fixed);return result===init||result===fixed?result.clone(true):result}}var name_length=def.name.length;var overhead=0;if(compressor.option("unused")&&!compressor.exposed(def)){overhead=(name_length+2+value_length)/(def.references.length-def.assignments)}def.should_replace=value_length<=name_length+overhead?fn:false}else{def.should_replace=false}}if(def.should_replace){return def.should_replace()}}return self;function has_symbol_ref(value){var found;value.walk(new TreeWalker(function(node){if(node instanceof AST_SymbolRef)found=true;if(found)return true}));return found}});function is_atomic(lhs,self){return lhs instanceof AST_SymbolRef||lhs.TYPE===self.TYPE}OPT(AST_Undefined,function(self,compressor){if(compressor.option("unsafe_undefined")){var undef=find_variable(compressor,"undefined");if(undef){var ref=make_node(AST_SymbolRef,self,{name:"undefined",scope:undef.scope,thedef:undef});ref.is_undefined=true;return ref}}var lhs=is_lhs(compressor.self(),compressor.parent());if(lhs&&is_atomic(lhs,self))return self;return make_node(AST_UnaryPrefix,self,{operator:"void",expression:make_node(AST_Number,self,{value:0})})});OPT(AST_Infinity,function(self,compressor){var lhs=is_lhs(compressor.self(),compressor.parent());if(lhs&&is_atomic(lhs,self))return self;if(compressor.option("keep_infinity")&&!(lhs&&!is_atomic(lhs,self))&&!find_variable(compressor,"Infinity"))return self;return make_node(AST_Binary,self,{operator:"/",left:make_node(AST_Number,self,{value:1}),right:make_node(AST_Number,self,{value:0})})});OPT(AST_NaN,function(self,compressor){var lhs=is_lhs(compressor.self(),compressor.parent());if(lhs&&!is_atomic(lhs,self)||find_variable(compressor,"NaN")){return make_node(AST_Binary,self,{operator:"/",left:make_node(AST_Number,self,{value:0}),right:make_node(AST_Number,self,{value:0})})}return self});function is_reachable(self,defs){var reachable=false;var find_ref=new TreeWalker(function(node){if(reachable)return true;if(node instanceof AST_SymbolRef&&member(node.definition(),defs)){return reachable=true}});var scan_scope=new TreeWalker(function(node){if(reachable)return true;if(node instanceof AST_Scope&&node!==self){var parent=scan_scope.parent();if(parent instanceof AST_Call&&parent.expression===node)return;node.walk(find_ref);return true}});self.walk(scan_scope);return reachable}var ASSIGN_OPS=makePredicate("+ - / * % >> << >>> | ^ &");var ASSIGN_OPS_COMMUTATIVE=makePredicate("* | ^ &");OPT(AST_Assign,function(self,compressor){var def;if(compressor.option("dead_code")&&self.left instanceof AST_SymbolRef&&(def=self.left.definition()).scope===compressor.find_parent(AST_Lambda)){var level=0,node,parent=self;do{node=parent;parent=compressor.parent(level++);if(parent instanceof AST_Exit){if(in_try(level,parent))break;if(is_reachable(def.scope,[def]))break;if(self.operator=="=")return self.right;def.fixed=false;return make_node(AST_Binary,self,{operator:self.operator.slice(0,-1),left:self.left,right:self.right}).optimize(compressor)}}while(parent instanceof AST_Binary&&parent.right===node||parent instanceof AST_Sequence&&parent.tail_node()===node)}self=self.lift_sequences(compressor);if(self.operator=="="&&self.left instanceof AST_SymbolRef&&self.right instanceof AST_Binary){if(self.right.left instanceof AST_SymbolRef&&self.right.left.name==self.left.name&&ASSIGN_OPS[self.right.operator]){self.operator=self.right.operator+"=";self.right=self.right.right}else if(self.right.right instanceof AST_SymbolRef&&self.right.right.name==self.left.name&&ASSIGN_OPS_COMMUTATIVE[self.right.operator]&&!self.right.left.has_side_effects(compressor)){self.operator=self.right.operator+"=";self.right=self.right.left}}return self;function in_try(level,node){var right=self.right;self.right=make_node(AST_Null,right);var may_throw=node.may_throw(compressor);self.right=right;var scope=self.left.definition().scope;var parent;while((parent=compressor.parent(level++))!==scope){if(parent instanceof AST_Try){if(parent.bfinally)return true;if(may_throw&&parent.bcatch)return true}}}});OPT(AST_Conditional,function(self,compressor){if(!compressor.option("conditionals"))return self;if(self.condition instanceof AST_Sequence){var expressions=self.condition.expressions.slice();self.condition=expressions.pop();expressions.push(self);return make_sequence(self,expressions)}var cond=self.condition.is_truthy()||self.condition.tail_node().evaluate(compressor);if(!cond){compressor.warn("Condition always false [{file}:{line},{col}]",self.start);return make_sequence(self,[self.condition,self.alternative]).optimize(compressor)}else if(!(cond instanceof AST_Node)){compressor.warn("Condition always true [{file}:{line},{col}]",self.start);return make_sequence(self,[self.condition,self.consequent]).optimize(compressor)}var negated=cond.negate(compressor,first_in_statement(compressor));if(best_of(compressor,cond,negated)===negated){self=make_node(AST_Conditional,self,{condition:negated,consequent:self.alternative,alternative:self.consequent})}var condition=self.condition;var consequent=self.consequent;var alternative=self.alternative;if(condition instanceof AST_SymbolRef&&consequent instanceof AST_SymbolRef&&condition.definition()===consequent.definition()){return make_node(AST_Binary,self,{operator:"||",left:condition,right:alternative})}var seq_tail=consequent.tail_node();if(seq_tail instanceof AST_Assign){var is_eq=seq_tail.operator=="=";var alt_tail=is_eq?alternative.tail_node():alternative;if((is_eq||consequent instanceof AST_Assign)&&alt_tail instanceof AST_Assign&&seq_tail.operator==alt_tail.operator&&seq_tail.left.equivalent_to(alt_tail.left)&&(!condition.has_side_effects(compressor)||is_eq&&!seq_tail.left.has_side_effects(compressor))){return make_node(AST_Assign,self,{operator:seq_tail.operator,left:seq_tail.left,right:make_node(AST_Conditional,self,{condition:condition,consequent:pop_lhs(consequent),alternative:pop_lhs(alternative)})})}}var arg_index;if(consequent instanceof AST_Call&&alternative.TYPE===consequent.TYPE&&consequent.args.length>0&&consequent.args.length==alternative.args.length&&consequent.expression.equivalent_to(alternative.expression)&&!condition.has_side_effects(compressor)&&!consequent.expression.has_side_effects(compressor)&&typeof(arg_index=single_arg_diff())=="number"){var node=consequent.clone();node.args[arg_index]=make_node(AST_Conditional,self,{condition:condition,consequent:consequent.args[arg_index],alternative:alternative.args[arg_index]});return node}if(consequent instanceof AST_Conditional&&consequent.alternative.equivalent_to(alternative)){return make_node(AST_Conditional,self,{condition:make_node(AST_Binary,self,{left:condition,operator:"&&",right:consequent.condition}),consequent:consequent.consequent,alternative:alternative})}if(consequent.equivalent_to(alternative)){return make_sequence(self,[condition,consequent]).optimize(compressor)}if((consequent instanceof AST_Sequence||alternative instanceof AST_Sequence)&&consequent.tail_node().equivalent_to(alternative.tail_node())){return make_sequence(self,[make_node(AST_Conditional,self,{condition:condition,consequent:pop_seq(consequent),alternative:pop_seq(alternative)}),consequent.tail_node()]).optimize(compressor)}if(consequent instanceof AST_Binary&&consequent.operator=="||"&&consequent.right.equivalent_to(alternative)){return make_node(AST_Binary,self,{operator:"||",left:make_node(AST_Binary,self,{operator:"&&",left:condition,right:consequent.left}),right:alternative}).optimize(compressor)}var in_bool=compressor.option("booleans")&&compressor.in_boolean_context();if(is_true(self.consequent)){if(is_false(self.alternative)){return booleanize(condition)}return make_node(AST_Binary,self,{operator:"||",left:booleanize(condition),right:self.alternative})}if(is_false(self.consequent)){if(is_true(self.alternative)){return booleanize(condition.negate(compressor))}return make_node(AST_Binary,self,{operator:"&&",left:booleanize(condition.negate(compressor)),right:self.alternative})}if(is_true(self.alternative)){return make_node(AST_Binary,self,{operator:"||",left:booleanize(condition.negate(compressor)),right:self.consequent})}if(is_false(self.alternative)){return make_node(AST_Binary,self,{operator:"&&",left:booleanize(condition),right:self.consequent})}return self;function booleanize(node){if(node.is_boolean(compressor))return node;return make_node(AST_UnaryPrefix,node,{operator:"!",expression:node.negate(compressor)})}function is_true(node){return node instanceof AST_True||in_bool&&node instanceof AST_Constant&&node.getValue()||node instanceof AST_UnaryPrefix&&node.operator=="!"&&node.expression instanceof AST_Constant&&!node.expression.getValue()}function is_false(node){return node instanceof AST_False||in_bool&&node instanceof AST_Constant&&!node.getValue()||node instanceof AST_UnaryPrefix&&node.operator=="!"&&node.expression instanceof AST_Constant&&node.expression.getValue()}function single_arg_diff(){var a=consequent.args;var b=alternative.args;for(var i=0,len=a.length;i<len;i++){if(!a[i].equivalent_to(b[i])){for(var j=i+1;j<len;j++){if(!a[j].equivalent_to(b[j]))return}return i}}}function pop_lhs(node){if(!(node instanceof AST_Sequence))return node.right;var exprs=node.expressions.slice();exprs.push(exprs.pop().right);return make_sequence(node,exprs)}function pop_seq(node){if(!(node instanceof AST_Sequence))return make_node(AST_Number,node,{value:0});return make_sequence(node,node.expressions.slice(0,-1))}});OPT(AST_Boolean,function(self,compressor){if(!compressor.option("booleans"))return self;if(compressor.in_boolean_context())return make_node(AST_Number,self,{value:+self.value});var p=compressor.parent();if(p instanceof AST_Binary&&(p.operator=="=="||p.operator=="!=")){compressor.warn("Non-strict equality against boolean: {operator} {value} [{file}:{line},{col}]",{operator:p.operator,value:self.value,file:p.start.file,line:p.start.line,col:p.start.col});return make_node(AST_Number,self,{value:+self.value})}return make_node(AST_UnaryPrefix,self,{operator:"!",expression:make_node(AST_Number,self,{value:1-self.value})})});function safe_to_flatten(value,compressor){if(value instanceof AST_SymbolRef){value=value.fixed_value()}if(!value)return false;return!(value instanceof AST_Lambda)||compressor.parent()instanceof AST_New||!value.contains_this()}OPT(AST_Sub,function(self,compressor){var expr=self.expression;var prop=self.property;if(compressor.option("properties")){var key=prop.evaluate(compressor);if(key!==prop){if(typeof key=="string"){if(key=="undefined"){key=undefined}else{var value=parseFloat(key);if(value.toString()==key){key=value}}}prop=self.property=best_of_expression(prop,make_node_from_constant(key,prop).transform(compressor));var property=""+key;if(is_identifier_string(property)&&property.length<=prop.print_to_string().length+1){return make_node(AST_Dot,self,{expression:expr,property:property}).optimize(compressor)}}}var fn;if(compressor.option("arguments")&&expr instanceof AST_SymbolRef&&expr.name=="arguments"&&expr.definition().orig.length==1&&(fn=expr.scope)instanceof AST_Lambda&&prop instanceof AST_Number){var index=prop.getValue();var argname=fn.argnames[index];if(argname&&compressor.has_directive("use strict")){var def=argname.definition();if(!compressor.option("reduce_vars")||def.assignments||def.orig.length>1){argname=null}}else if(!argname&&!compressor.option("keep_fargs")&&index<fn.argnames.length+5){while(index>=fn.argnames.length){argname=make_node(AST_SymbolFunarg,fn,{name:fn.make_var_name("argument_"+fn.argnames.length),scope:fn});fn.argnames.push(argname);fn.enclosed.push(fn.def_variable(argname))}}if(argname&&find_if(function(node){return node.name===argname.name},fn.argnames)===argname){var sym=make_node(AST_SymbolRef,self,argname);sym.reference({});delete argname.__unused;return sym}}if(is_lhs(self,compressor.parent()))return self;if(key!==prop){var sub=self.flatten_object(property,compressor);if(sub){expr=self.expression=sub.expression;prop=self.property=sub.property}}if(compressor.option("properties")&&compressor.option("side_effects")&&prop instanceof AST_Number&&expr instanceof AST_Array){var index=prop.getValue();var elements=expr.elements;var retValue=elements[index];if(safe_to_flatten(retValue,compressor)){var flatten=true;var values=[];for(var i=elements.length;--i>index;){var value=elements[i].drop_side_effect_free(compressor);if(value){values.unshift(value);if(flatten&&value.has_side_effects(compressor))flatten=false}}retValue=retValue instanceof AST_Hole?make_node(AST_Undefined,retValue):retValue;if(!flatten)values.unshift(retValue);while(--i>=0){var value=elements[i].drop_side_effect_free(compressor);if(value)values.unshift(value);else index--}if(flatten){values.push(retValue);return make_sequence(self,values).optimize(compressor)}else return make_node(AST_Sub,self,{expression:make_node(AST_Array,expr,{elements:values}),property:make_node(AST_Number,prop,{value:index})})}}var ev=self.evaluate(compressor);if(ev!==self){ev=make_node_from_constant(ev,self).optimize(compressor);return best_of(compressor,ev,self)}return self});AST_Scope.DEFMETHOD("contains_this",function(){var result;var self=this;self.walk(new TreeWalker(function(node){if(result)return true;if(node instanceof AST_This)return result=true;if(node!==self&&node instanceof AST_Scope)return true}));return result});AST_PropAccess.DEFMETHOD("flatten_object",function(key,compressor){if(!compressor.option("properties"))return;var expr=this.expression;if(expr instanceof AST_Object){var props=expr.properties;for(var i=props.length;--i>=0;){var prop=props[i];if(""+prop.key==key){if(!all(props,function(prop){return prop instanceof AST_ObjectKeyVal}))break;if(!safe_to_flatten(prop.value,compressor))break;return make_node(AST_Sub,this,{expression:make_node(AST_Array,expr,{elements:props.map(function(prop){return prop.value})}),property:make_node(AST_Number,this,{value:i})})}}}});OPT(AST_Dot,function(self,compressor){if(self.property=="arguments"||self.property=="caller"){compressor.warn("Function.protoype.{prop} not supported [{file}:{line},{col}]",{prop:self.property,file:self.start.file,line:self.start.line,col:self.start.col})}if(is_lhs(self,compressor.parent()))return self;if(compressor.option("unsafe_proto")&&self.expression instanceof AST_Dot&&self.expression.property=="prototype"){var exp=self.expression.expression;if(is_undeclared_ref(exp))switch(exp.name){case"Array":self.expression=make_node(AST_Array,self.expression,{elements:[]});break;case"Function":self.expression=make_node(AST_Function,self.expression,{argnames:[],body:[]});break;case"Number":self.expression=make_node(AST_Number,self.expression,{value:0});break;case"Object":self.expression=make_node(AST_Object,self.expression,{properties:[]});break;case"RegExp":self.expression=make_node(AST_RegExp,self.expression,{value:/t/});break;case"String":self.expression=make_node(AST_String,self.expression,{value:""});break}}var sub=self.flatten_object(self.property,compressor);if(sub)return sub.optimize(compressor);var ev=self.evaluate(compressor);if(ev!==self){ev=make_node_from_constant(ev,self).optimize(compressor);return best_of(compressor,ev,self)}return self});OPT(AST_Return,function(self,compressor){if(self.value&&is_undefined(self.value,compressor)){self.value=null}return self})})(function(node,optimizer){node.DEFMETHOD("optimize",function(compressor){var self=this;if(self._optimized)return self;if(compressor.has_directive("use asm"))return self;var opt=optimizer(self,compressor);opt._optimized=true;return opt})});"use strict";function SourceMap(options){options=defaults(options,{file:null,root:null,orig:null,orig_line_diff:0,dest_line_diff:0},true);var generator=new MOZ_SourceMap.SourceMapGenerator({file:options.file,sourceRoot:options.root});var maps=options.orig&&Object.create(null);if(maps)for(var source in options.orig){var map=new MOZ_SourceMap.SourceMapConsumer(options.orig[source]);if(Array.isArray(options.orig[source].sources)){map._sources.toArray().forEach(function(source){var sourceContent=map.sourceContentFor(source,true);if(sourceContent)generator.setSourceContent(source,sourceContent)})}maps[source]=map}return{add:function(source,gen_line,gen_col,orig_line,orig_col,name){var map=maps&&maps[source];if(map){var info=map.originalPositionFor({line:orig_line,column:orig_col});if(info.source===null)return;source=info.source;orig_line=info.line;orig_col=info.column;name=info.name||name}generator.addMapping({name:name,source:source,generated:{line:gen_line+options.dest_line_diff,column:gen_col},original:{line:orig_line+options.orig_line_diff,column:orig_col}})},get:function(){return generator},toString:function(){return JSON.stringify(generator.toJSON())}}}"use strict";(function(){function normalize_directives(body){var in_directive=true;for(var i=0;i<body.length;i++){if(in_directive&&body[i]instanceof AST_Statement&&body[i].body instanceof AST_String){body[i]=new AST_Directive({start:body[i].start,end:body[i].end,value:body[i].body.value})}else if(in_directive&&!(body[i]instanceof AST_Statement&&body[i].body instanceof AST_String)){in_directive=false}}return body}var MOZ_TO_ME={Program:function(M){return new AST_Toplevel({start:my_start_token(M),end:my_end_token(M),body:normalize_directives(M.body.map(from_moz))})},FunctionDeclaration:function(M){return new AST_Defun({start:my_start_token(M),end:my_end_token(M),name:from_moz(M.id),argnames:M.params.map(from_moz),body:normalize_directives(from_moz(M.body).body)})},FunctionExpression:function(M){return new AST_Function({start:my_start_token(M),end:my_end_token(M),name:from_moz(M.id),argnames:M.params.map(from_moz),body:normalize_directives(from_moz(M.body).body)})},ExpressionStatement:function(M){return new AST_SimpleStatement({start:my_start_token(M),end:my_end_token(M),body:from_moz(M.expression)})},TryStatement:function(M){var handlers=M.handlers||[M.handler];if(handlers.length>1||M.guardedHandlers&&M.guardedHandlers.length){throw new Error("Multiple catch clauses are not supported.")}return new AST_Try({start:my_start_token(M),end:my_end_token(M),body:from_moz(M.block).body,bcatch:from_moz(handlers[0]),bfinally:M.finalizer?new AST_Finally(from_moz(M.finalizer)):null})},Property:function(M){var key=M.key;var args={start:my_start_token(key),end:my_end_token(M.value),key:key.type=="Identifier"?key.name:key.value,value:from_moz(M.value)};if(M.kind=="init")return new AST_ObjectKeyVal(args);args.key=new AST_SymbolAccessor({name:args.key});args.value=new AST_Accessor(args.value);if(M.kind=="get")return new AST_ObjectGetter(args);if(M.kind=="set")return new AST_ObjectSetter(args)},ArrayExpression:function(M){return new AST_Array({start:my_start_token(M),end:my_end_token(M),elements:M.elements.map(function(elem){return elem===null?new AST_Hole:from_moz(elem)})})},ObjectExpression:function(M){return new AST_Object({start:my_start_token(M),end:my_end_token(M),properties:M.properties.map(function(prop){prop.type="Property";return from_moz(prop)})})},SequenceExpression:function(M){return new AST_Sequence({start:my_start_token(M),end:my_end_token(M),expressions:M.expressions.map(from_moz)})},MemberExpression:function(M){return new(M.computed?AST_Sub:AST_Dot)({start:my_start_token(M),end:my_end_token(M),property:M.computed?from_moz(M.property):M.property.name,expression:from_moz(M.object)})},SwitchCase:function(M){return new(M.test?AST_Case:AST_Default)({start:my_start_token(M),end:my_end_token(M),expression:from_moz(M.test),body:M.consequent.map(from_moz)})},VariableDeclaration:function(M){return new AST_Var({start:my_start_token(M),end:my_end_token(M),definitions:M.declarations.map(from_moz)})},Literal:function(M){var val=M.value,args={start:my_start_token(M),end:my_end_token(M)};if(val===null)return new AST_Null(args);var rx=M.regex;if(rx&&rx.pattern){args.value=new RegExp(rx.pattern,rx.flags);args.value.raw_source=rx.pattern;return new AST_RegExp(args)}else if(rx){args.value=M.regex&&M.raw?M.raw:val;return new AST_RegExp(args)}switch(typeof val){case"string":args.value=val;return new AST_String(args);case"number":args.value=val;return new AST_Number(args);case"boolean":return new(val?AST_True:AST_False)(args)}},Identifier:function(M){var p=FROM_MOZ_STACK[FROM_MOZ_STACK.length-2];return new(p.type=="LabeledStatement"?AST_Label:p.type=="VariableDeclarator"&&p.id===M?AST_SymbolVar:p.type=="FunctionExpression"?p.id===M?AST_SymbolLambda:AST_SymbolFunarg:p.type=="FunctionDeclaration"?p.id===M?AST_SymbolDefun:AST_SymbolFunarg:p.type=="CatchClause"?AST_SymbolCatch:p.type=="BreakStatement"||p.type=="ContinueStatement"?AST_LabelRef:AST_SymbolRef)({start:my_start_token(M),end:my_end_token(M),name:M.name})}};MOZ_TO_ME.UpdateExpression=MOZ_TO_ME.UnaryExpression=function To_Moz_Unary(M){var prefix="prefix"in M?M.prefix:M.type=="UnaryExpression"?true:false;return new(prefix?AST_UnaryPrefix:AST_UnaryPostfix)({start:my_start_token(M),end:my_end_token(M),operator:M.operator,expression:from_moz(M.argument)})};map("EmptyStatement",AST_EmptyStatement);map("BlockStatement",AST_BlockStatement,"body@body");map("IfStatement",AST_If,"test>condition, consequent>body, alternate>alternative");map("LabeledStatement",AST_LabeledStatement,"label>label, body>body");map("BreakStatement",AST_Break,"label>label");map("ContinueStatement",AST_Continue,"label>label");map("WithStatement",AST_With,"object>expression, body>body");map("SwitchStatement",AST_Switch,"discriminant>expression, cases@body");map("ReturnStatement",AST_Return,"argument>value");map("ThrowStatement",AST_Throw,"argument>value");map("WhileStatement",AST_While,"test>condition, body>body");map("DoWhileStatement",AST_Do,"test>condition, body>body");map("ForStatement",AST_For,"init>init, test>condition, update>step, body>body");map("ForInStatement",AST_ForIn,"left>init, right>object, body>body");map("DebuggerStatement",AST_Debugger);map("VariableDeclarator",AST_VarDef,"id>name, init>value");map("CatchClause",AST_Catch,"param>argname, body%body");map("ThisExpression",AST_This);map("BinaryExpression",AST_Binary,"operator=operator, left>left, right>right");map("LogicalExpression",AST_Binary,"operator=operator, left>left, right>right");map("AssignmentExpression",AST_Assign,"operator=operator, left>left, right>right");map("ConditionalExpression",AST_Conditional,"test>condition, consequent>consequent, alternate>alternative");map("NewExpression",AST_New,"callee>expression, arguments@args");map("CallExpression",AST_Call,"callee>expression, arguments@args");def_to_moz(AST_Toplevel,function To_Moz_Program(M){return to_moz_scope("Program",M)});def_to_moz(AST_Defun,function To_Moz_FunctionDeclaration(M){return{type:"FunctionDeclaration",id:to_moz(M.name),params:M.argnames.map(to_moz),body:to_moz_scope("BlockStatement",M)}});def_to_moz(AST_Function,function To_Moz_FunctionExpression(M){return{type:"FunctionExpression",id:to_moz(M.name),params:M.argnames.map(to_moz),body:to_moz_scope("BlockStatement",M)}});def_to_moz(AST_Directive,function To_Moz_Directive(M){return{type:"ExpressionStatement",expression:{type:"Literal",value:M.value}}});def_to_moz(AST_SimpleStatement,function To_Moz_ExpressionStatement(M){return{type:"ExpressionStatement",expression:to_moz(M.body)}});def_to_moz(AST_SwitchBranch,function To_Moz_SwitchCase(M){return{type:"SwitchCase",test:to_moz(M.expression),consequent:M.body.map(to_moz)}});def_to_moz(AST_Try,function To_Moz_TryStatement(M){return{type:"TryStatement",block:to_moz_block(M),handler:to_moz(M.bcatch),guardedHandlers:[],finalizer:to_moz(M.bfinally)}});def_to_moz(AST_Catch,function To_Moz_CatchClause(M){return{type:"CatchClause",param:to_moz(M.argname),guard:null,body:to_moz_block(M)}});def_to_moz(AST_Definitions,function To_Moz_VariableDeclaration(M){return{type:"VariableDeclaration",kind:"var",declarations:M.definitions.map(to_moz)}});def_to_moz(AST_Sequence,function To_Moz_SequenceExpression(M){return{type:"SequenceExpression",expressions:M.expressions.map(to_moz)}});def_to_moz(AST_PropAccess,function To_Moz_MemberExpression(M){var isComputed=M instanceof AST_Sub;return{type:"MemberExpression",object:to_moz(M.expression),computed:isComputed,property:isComputed?to_moz(M.property):{type:"Identifier",name:M.property}}});def_to_moz(AST_Unary,function To_Moz_Unary(M){return{type:M.operator=="++"||M.operator=="--"?"UpdateExpression":"UnaryExpression",operator:M.operator,prefix:M instanceof AST_UnaryPrefix,argument:to_moz(M.expression)}});def_to_moz(AST_Binary,function To_Moz_BinaryExpression(M){return{type:M.operator=="&&"||M.operator=="||"?"LogicalExpression":"BinaryExpression",left:to_moz(M.left),operator:M.operator,right:to_moz(M.right)}});def_to_moz(AST_Array,function To_Moz_ArrayExpression(M){return{type:"ArrayExpression",elements:M.elements.map(to_moz)}});def_to_moz(AST_Object,function To_Moz_ObjectExpression(M){return{type:"ObjectExpression",properties:M.properties.map(to_moz)}});def_to_moz(AST_ObjectProperty,function To_Moz_Property(M){var key={type:"Literal",value:M.key instanceof AST_SymbolAccessor?M.key.name:M.key};var kind;if(M instanceof AST_ObjectKeyVal){kind="init"}else if(M instanceof AST_ObjectGetter){kind="get"}else if(M instanceof AST_ObjectSetter){kind="set"}return{type:"Property",kind:kind,key:key,value:to_moz(M.value)}});def_to_moz(AST_Symbol,function To_Moz_Identifier(M){var def=M.definition();return{type:"Identifier",name:def?def.mangled_name||def.name:M.name}});def_to_moz(AST_RegExp,function To_Moz_RegExpLiteral(M){var flags=M.value.toString().match(/[gimuy]*$/)[0];var value="/"+M.value.raw_source+"/"+flags;return{type:"Literal",value:value,raw:value,regex:{pattern:M.value.raw_source,flags:flags}}});def_to_moz(AST_Constant,function To_Moz_Literal(M){var value=M.value;if(typeof value==="number"&&(value<0||value===0&&1/value<0)){return{type:"UnaryExpression",operator:"-",prefix:true,argument:{type:"Literal",value:-value,raw:M.start.raw}}}return{type:"Literal",value:value,raw:M.start.raw}});def_to_moz(AST_Atom,function To_Moz_Atom(M){return{type:"Identifier",name:String(M.value)}});AST_Boolean.DEFMETHOD("to_mozilla_ast",AST_Constant.prototype.to_mozilla_ast);AST_Null.DEFMETHOD("to_mozilla_ast",AST_Constant.prototype.to_mozilla_ast);AST_Hole.DEFMETHOD("to_mozilla_ast",function To_Moz_ArrayHole(){return null});AST_Block.DEFMETHOD("to_mozilla_ast",AST_BlockStatement.prototype.to_mozilla_ast);AST_Lambda.DEFMETHOD("to_mozilla_ast",AST_Function.prototype.to_mozilla_ast);function raw_token(moznode){if(moznode.type=="Literal"){return moznode.raw!=null?moznode.raw:moznode.value+""}}function my_start_token(moznode){var loc=moznode.loc,start=loc&&loc.start;var range=moznode.range;return new AST_Token({file:loc&&loc.source,line:start&&start.line,col:start&&start.column,pos:range?range[0]:moznode.start,endline:start&&start.line,endcol:start&&start.column,endpos:range?range[0]:moznode.start,raw:raw_token(moznode)})}function my_end_token(moznode){var loc=moznode.loc,end=loc&&loc.end;var range=moznode.range;return new AST_Token({file:loc&&loc.source,line:end&&end.line,col:end&&end.column,pos:range?range[1]:moznode.end,endline:end&&end.line,endcol:end&&end.column,endpos:range?range[1]:moznode.end,raw:raw_token(moznode)})}function map(moztype,mytype,propmap){var moz_to_me="function From_Moz_"+moztype+"(M){\n";moz_to_me+="return new U2."+mytype.name+"({\n"+"start: my_start_token(M),\n"+"end: my_end_token(M)";var me_to_moz="function To_Moz_"+moztype+"(M){\n";me_to_moz+="return {\n"+"type: "+JSON.stringify(moztype);if(propmap)propmap.split(/\s*,\s*/).forEach(function(prop){var m=/([a-z0-9$_]+)(=|@|>|%)([a-z0-9$_]+)/i.exec(prop);if(!m)throw new Error("Can't understand property map: "+prop);var moz=m[1],how=m[2],my=m[3];moz_to_me+=",\n"+my+": ";me_to_moz+=",\n"+moz+": ";switch(how){case"@":moz_to_me+="M."+moz+".map(from_moz)";me_to_moz+="M."+my+".map(to_moz)";break;case">":moz_to_me+="from_moz(M."+moz+")";me_to_moz+="to_moz(M."+my+")";break;case"=":moz_to_me+="M."+moz;me_to_moz+="M."+my;break;case"%":moz_to_me+="from_moz(M."+moz+").body";me_to_moz+="to_moz_block(M)";break;default:throw new Error("Can't understand operator in propmap: "+prop)}});moz_to_me+="\n})\n}";me_to_moz+="\n}\n}";moz_to_me=new Function("U2","my_start_token","my_end_token","from_moz","return("+moz_to_me+")")(exports,my_start_token,my_end_token,from_moz);me_to_moz=new Function("to_moz","to_moz_block","to_moz_scope","return("+me_to_moz+")")(to_moz,to_moz_block,to_moz_scope);MOZ_TO_ME[moztype]=moz_to_me;def_to_moz(mytype,me_to_moz)}var FROM_MOZ_STACK=null;function from_moz(node){FROM_MOZ_STACK.push(node);var ret=node!=null?MOZ_TO_ME[node.type](node):null;FROM_MOZ_STACK.pop();return ret}AST_Node.from_mozilla_ast=function(node){var save_stack=FROM_MOZ_STACK;FROM_MOZ_STACK=[];var ast=from_moz(node);FROM_MOZ_STACK=save_stack;ast.walk(new TreeWalker(function(node){if(node instanceof AST_LabelRef){for(var level=0,parent;parent=this.parent(level);level++){if(parent instanceof AST_Scope)break;if(parent instanceof AST_LabeledStatement&&parent.label.name==node.name){node.thedef=parent.label;break}}if(!node.thedef){var s=node.start;js_error("Undefined label "+node.name,s.file,s.line,s.col,s.pos)}}}));return ast};function set_moz_loc(mynode,moznode,myparent){var start=mynode.start;var end=mynode.end;if(start.pos!=null&&end.endpos!=null){moznode.range=[start.pos,end.endpos]}if(start.line){moznode.loc={start:{line:start.line,column:start.col},end:end.endline?{line:end.endline,column:end.endcol}:null};if(start.file){moznode.loc.source=start.file}}return moznode}function def_to_moz(mytype,handler){mytype.DEFMETHOD("to_mozilla_ast",function(){return set_moz_loc(this,handler(this))})}function to_moz(node){return node!=null?node.to_mozilla_ast():null}function to_moz_block(node){return{type:"BlockStatement",body:node.body.map(to_moz)}}function to_moz_scope(type,node){var body=node.body.map(to_moz);if(node.body[0]instanceof AST_SimpleStatement&&node.body[0].body instanceof AST_String){body.unshift(to_moz(new AST_EmptyStatement(node.body[0])))}return{type:type,body:body}}})();"use strict";function find_builtins(reserved){["null","true","false","Infinity","-Infinity","undefined"].forEach(add);[Array,Boolean,Date,Error,Function,Math,Number,Object,RegExp,String].forEach(function(ctor){Object.getOwnPropertyNames(ctor).map(add);if(ctor.prototype){Object.getOwnPropertyNames(ctor.prototype).map(add)}});function add(name){push_uniq(reserved,name)}}function reserve_quoted_keys(ast,reserved){ast.walk(new TreeWalker(function(node){if(node instanceof AST_ObjectKeyVal&&node.quote){add(node.key)}else if(node instanceof AST_Sub){addStrings(node.property,add)}}));function add(name){push_uniq(reserved,name)}}function addStrings(node,add){node.walk(new TreeWalker(function(node){if(node instanceof AST_Sequence){addStrings(node.tail_node(),add)}else if(node instanceof AST_String){add(node.value)}else if(node instanceof AST_Conditional){addStrings(node.consequent,add);addStrings(node.alternative,add)}return true}))}function mangle_properties(ast,options){options=defaults(options,{builtins:false,cache:null,debug:false,keep_quoted:false,only_cache:false,regex:null,reserved:null},true);var reserved=options.reserved;if(!Array.isArray(reserved))reserved=[];if(!options.builtins)find_builtins(reserved);var cname=-1;var cache;if(options.cache){cache=options.cache.props;cache.each(function(mangled_name){push_uniq(reserved,mangled_name)})}else{cache=new Dictionary}var regex=options.regex;var debug=options.debug!==false;var debug_suffix;if(debug)debug_suffix=options.debug===true?"":options.debug;var names_to_mangle=[];var unmangleable=[];ast.walk(new TreeWalker(function(node){if(node instanceof AST_ObjectKeyVal){add(node.key)}else if(node instanceof AST_ObjectProperty){add(node.key.name)}else if(node instanceof AST_Dot){add(node.property)}else if(node instanceof AST_Sub){addStrings(node.property,add)}else if(node instanceof AST_Call&&node.expression.print_to_string()=="Object.defineProperty"){addStrings(node.args[1],add)}}));return ast.transform(new TreeTransformer(function(node){if(node instanceof AST_ObjectKeyVal){node.key=mangle(node.key)}else if(node instanceof AST_ObjectProperty){node.key.name=mangle(node.key.name)}else if(node instanceof AST_Dot){node.property=mangle(node.property)}else if(!options.keep_quoted&&node instanceof AST_Sub){node.property=mangleStrings(node.property)}else if(node instanceof AST_Call&&node.expression.print_to_string()=="Object.defineProperty"){node.args[1]=mangleStrings(node.args[1])}}));function can_mangle(name){if(unmangleable.indexOf(name)>=0)return false;if(reserved.indexOf(name)>=0)return false;if(options.only_cache)return cache.has(name);if(/^-?[0-9]+(\.[0-9]+)?(e[+-][0-9]+)?$/.test(name))return false;return true}function should_mangle(name){if(regex&&!regex.test(name))return false;if(reserved.indexOf(name)>=0)return false;return cache.has(name)||names_to_mangle.indexOf(name)>=0}function add(name){if(can_mangle(name))push_uniq(names_to_mangle,name);if(!should_mangle(name))push_uniq(unmangleable,name)}function mangle(name){if(!should_mangle(name)){return name}var mangled=cache.get(name);if(!mangled){if(debug){var debug_mangled="_$"+name+"$"+debug_suffix+"_";if(can_mangle(debug_mangled))mangled=debug_mangled}if(!mangled)do{mangled=base54(++cname)}while(!can_mangle(mangled));cache.set(name,mangled)}return mangled}function mangleStrings(node){return node.transform(new TreeTransformer(function(node){if(node instanceof AST_Sequence){var last=node.expressions.length-1;node.expressions[last]=mangleStrings(node.expressions[last])}else if(node instanceof AST_String){node.value=mangle(node.value)}else if(node instanceof AST_Conditional){node.consequent=mangleStrings(node.consequent);node.alternative=mangleStrings(node.alternative)}return node}))}}"use strict";var to_ascii=typeof atob=="undefined"?function(b64){return new Buffer(b64,"base64").toString()}:atob;var to_base64=typeof btoa=="undefined"?function(str){return new Buffer(str).toString("base64")}:btoa;function read_source_map(name,code){var match=/\n\/\/# sourceMappingURL=data:application\/json(;.*?)?;base64,(.*)/.exec(code);if(!match){AST_Node.warn("inline source map not found: "+name);return null}return to_ascii(match[2])}function parse_source_map(content){try{return JSON.parse(content)}catch(ex){throw new Error("invalid input source map: "+content)}}function set_shorthand(name,options,keys){if(options[name]){keys.forEach(function(key){if(options[key]){if(typeof options[key]!="object")options[key]={};if(!(name in options[key]))options[key][name]=options[name]}})}}function init_cache(cache){if(!cache)return;if(!("props"in cache)){cache.props=new Dictionary}else if(!(cache.props instanceof Dictionary)){cache.props=Dictionary.fromObject(cache.props)}}function to_json(cache){return{props:cache.props.toObject()}}function minify(files,options){var warn_function=AST_Node.warn_function;try{options=defaults(options,{compress:{},enclose:false,ie8:false,keep_fnames:false,mangle:{},nameCache:null,output:{},parse:{},rename:undefined,sourceMap:false,timings:false,toplevel:false,warnings:false,wrap:false},true);var timings=options.timings&&{start:Date.now()};if(options.rename===undefined){options.rename=options.compress&&options.mangle}set_shorthand("ie8",options,["compress","mangle","output"]);set_shorthand("keep_fnames",options,["compress","mangle"]);set_shorthand("toplevel",options,["compress","mangle"]);set_shorthand("warnings",options,["compress"]);var quoted_props;if(options.mangle){options.mangle=defaults(options.mangle,{cache:options.nameCache&&(options.nameCache.vars||{}),eval:false,ie8:false,keep_fnames:false,properties:false,reserved:[],toplevel:false},true);if(options.mangle.properties){if(typeof options.mangle.properties!="object"){options.mangle.properties={}}if(options.mangle.properties.keep_quoted){quoted_props=options.mangle.properties.reserved;if(!Array.isArray(quoted_props))quoted_props=[];options.mangle.properties.reserved=quoted_props}if(options.nameCache&&!("cache"in options.mangle.properties)){options.mangle.properties.cache=options.nameCache.props||{}}}init_cache(options.mangle.cache);init_cache(options.mangle.properties.cache)}if(options.sourceMap){options.sourceMap=defaults(options.sourceMap,{content:null,filename:null,includeSources:false,root:null,url:null},true)}var warnings=[];if(options.warnings&&!AST_Node.warn_function){AST_Node.warn_function=function(warning){warnings.push(warning)}}if(timings)timings.parse=Date.now();var source_maps,toplevel;if(files instanceof AST_Toplevel){toplevel=files}else{if(typeof files=="string"){files=[files]}options.parse=options.parse||{};options.parse.toplevel=null;var source_map_content=options.sourceMap&&options.sourceMap.content;if(typeof source_map_content=="string"&&source_map_content!="inline"){source_map_content=parse_source_map(source_map_content)}source_maps=source_map_content&&Object.create(null);for(var name in files)if(HOP(files,name)){options.parse.filename=name;options.parse.toplevel=parse(files[name],options.parse);if(source_maps){if(source_map_content=="inline"){var inlined_content=read_source_map(name,files[name]);if(inlined_content){source_maps[name]=parse_source_map(inlined_content)}}else{source_maps[name]=source_map_content}}}toplevel=options.parse.toplevel}if(quoted_props){reserve_quoted_keys(toplevel,quoted_props)}if(options.wrap){toplevel=toplevel.wrap_commonjs(options.wrap)}if(options.enclose){toplevel=toplevel.wrap_enclose(options.enclose)}if(timings)timings.rename=Date.now();if(options.rename){toplevel.figure_out_scope(options.mangle);toplevel.expand_names(options.mangle)}if(timings)timings.compress=Date.now();if(options.compress)toplevel=new Compressor(options.compress).compress(toplevel);if(timings)timings.scope=Date.now();if(options.mangle)toplevel.figure_out_scope(options.mangle);if(timings)timings.mangle=Date.now();if(options.mangle){toplevel.compute_char_frequency(options.mangle);toplevel.mangle_names(options.mangle)}if(timings)timings.properties=Date.now();if(options.mangle&&options.mangle.properties){toplevel=mangle_properties(toplevel,options.mangle.properties)}if(timings)timings.output=Date.now();var result={};if(options.output.ast){result.ast=toplevel}if(!HOP(options.output,"code")||options.output.code){if(options.sourceMap){options.output.source_map=SourceMap({file:options.sourceMap.filename,orig:source_maps,root:options.sourceMap.root});if(options.sourceMap.includeSources){if(files instanceof AST_Toplevel){throw new Error("original source content unavailable")}else for(var name in files)if(HOP(files,name)){options.output.source_map.get().setSourceContent(name,files[name])}}else{options.output.source_map.get()._sourcesContents=null}}delete options.output.ast;delete options.output.code;var stream=OutputStream(options.output);toplevel.print(stream);result.code=stream.get();if(options.sourceMap){result.map=options.output.source_map.toString();if(options.sourceMap.url=="inline"){result.code+="\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,"+to_base64(result.map)}else if(options.sourceMap.url){result.code+="\n//# sourceMappingURL="+options.sourceMap.url}}}if(options.nameCache&&options.mangle){if(options.mangle.cache)options.nameCache.vars=to_json(options.mangle.cache);if(options.mangle.properties&&options.mangle.properties.cache){options.nameCache.props=to_json(options.mangle.properties.cache)}}if(timings){timings.end=Date.now();result.timings={parse:.001*(timings.rename-timings.parse),rename:.001*(timings.compress-timings.rename),compress:.001*(timings.scope-timings.compress),scope:.001*(timings.mangle-timings.scope),mangle:.001*(timings.properties-timings.mangle),properties:.001*(timings.output-timings.properties),output:.001*(timings.end-timings.output),total:.001*(timings.end-timings.start)}}if(warnings.length){result.warnings=warnings}return result}catch(ex){return{error:ex}}finally{AST_Node.warn_function=warn_function}}exports["Dictionary"]=Dictionary;exports["minify"]=minify;exports["parse"]=parse;exports["push_uniq"]=push_uniq;exports["TreeTransformer"]=TreeTransformer;exports["TreeWalker"]=TreeWalker})(typeof exports=="undefined"?exports={}:exports);
}).call(this,require("buffer").Buffer)
},{"buffer":4}]},{},["html-minifier"]);