text: // modules are defined as an array
  // [ module function, map of requireuires ]
  //
  // map of requireuires is short require name -> numeric require
  //
  // anything defined in a previous bundle is accessed via the
  // orig method which is the requireuire for previous bundles
  
  (function outer (modules, cache, entry) {
      // Save the require from previous bundle to this closure if any
      var previousRequire = typeof require == "function" && require;
  
      function findProxyquireifyName() {
          var deps = Object.keys(modules)
              .map(function (k) { return modules[k][1]; });
  
          for (var i = 0; i < deps.length; i++) {
              var pq = deps[i]['proxyquireify'];
              if (pq) return pq;
          }
      }
  
      var proxyquireifyName = findProxyquireifyName();
  
      function newRequire(name, jumped){
          // Find the proxyquireify module, if present
          var pqify = (proxyquireifyName != null) && cache[proxyquireifyName];
  
          // Proxyquireify provides a separate cache that is used when inside
          // a proxyquire call, and is set to null outside a proxyquire call.
          // This allows the regular caching semantics to work correctly both
          // inside and outside proxyquire calls while keeping the cached
          // modules isolated.
          // When switching from one proxyquire call to another, it clears
          // the cache to prevent contamination between different sets
          // of stubs.
          var currentCache = (pqify && pqify.exports._cache) || cache;
  
          if(!currentCache[name]) {
              if(!modules[name]) {
                  // if we cannot find the the module within our internal map or
                  // cache jump to the current global require ie. the last bundle
                  // that was added to the page.
                  var currentRequire = typeof require == "function" && require;
                  if (!jumped && currentRequire) return currentRequire(name, true);
  
                  // If there are other bundles on this page the require from the
                  // previous one is saved to 'previousRequire'. Repeat this as
                  // many times as there are bundles until the module is found or
                  // we exhaust the require chain.
                  if (previousRequire) return previousRequire(name, true);
                  var err = new Error('Cannot find module \'' + name + '\'');
                  err.code = 'MODULE_NOT_FOUND';
                  throw err;
              }
              var m = currentCache[name] = {exports:{}};
  
              // The normal browserify require function
              var req = function(x){
                  var id = modules[name][1][x];
                  return newRequire(id ? id : x);
              };
  
              // The require function substituted for proxyquireify
              var moduleRequire = function(x){
                  var pqify = (proxyquireifyName != null) && cache[proxyquireifyName];
                  // Only try to use the proxyquireify version if it has been `require`d
                  if (pqify && pqify.exports._proxy) {
                      return pqify.exports._proxy(req, x);
                  } else {
                      return req(x);
                  }
              };
  
              modules[name][0].call(m.exports,moduleRequire,m,m.exports,outer,modules,currentCache,entry);
          }
          return currentCache[name].exports;
      }
      for(var i=0;i<entry.length;i++) newRequire(entry[i]);
  
      // Override the current require with this new one
      return newRequire;
  })
  ({1:[function(require,module,exports){
  module.exports=[
  	"int16",
  	"int32",
  	"int8",
  	"uint16",
  	"uint32",
  	"uint8",
  	"uint8c"
  ]
  
  },{}],2:[function(require,module,exports){
  /**
  * @license Apache-2.0
  *
  * Copyright (c) 2022 The Stdlib Authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *    http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
  
  'use strict';
  
  /**
  * Return a list of typed array integer data types.
  *
  * @module @stdlib/array/typed-integer-dtypes
  *
  * @example
  * var dtypes = require( '@stdlib/array/typed-integer-dtypes' );
  *
  * var list = dtypes();
  * // e.g., returns [ 'int16', 'int32', 'int8', 'uint16', 'uint32', 'uint8', 'uint8c' ]
  */
  
  // MODULES //
  
  var main = require( './main.js' );
  
  
  // EXPORTS //
  
  module.exports = main;
  
  },{"./main.js":3}],3:[function(require,module,exports){
  /**
  * @license Apache-2.0
  *
  * Copyright (c) 2022 The Stdlib Authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *    http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
  
  'use strict';
  
  // MODULES //
  
  var DTYPES = require( './dtypes.json' );
  
  
  // MAIN //
  
  /**
  * Returns a list of typed array integer data types.
  *
  * @returns {StringArray} list of typed array integer data types
  *
  * @example
  * var list = dtypes();
  * // e.g., returns [ 'int16', 'int32', 'int8', 'uint16', 'uint32', 'uint8', 'uint8c' ]
  */
  function dtypes() {
  	return DTYPES.slice();
  }
  
  
  // EXPORTS //
  
  module.exports = dtypes;
  
  },{"./dtypes.json":1}],4:[function(require,module,exports){
  (function (__filename){(function (){
  /**
  * @license Apache-2.0
  *
  * Copyright (c) 2022 The Stdlib Authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *    http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
  
  'use strict';
  
  // MODULES //
  
  var tape = require( 'tape' );
  var dtypes = require( './../lib' );
  
  
  // TESTS //
  
  tape( 'main export is a function', function test( t ) {
  	t.ok( true, __filename );
  	t.strictEqual( typeof dtypes, 'function', 'main export is a function' );
  	t.end();
  });
  
  tape( 'the function returns a list of typed array data types', function test( t ) {
  	var expected;
  	var actual;
  
  	expected = [
  		'int16',
  		'int32',
  		'int8',
  		'uint16',
  		'uint32',
  		'uint8',
  		'uint8c'
  	];
  	actual = dtypes();
  
  	t.deepEqual( actual, expected, 'returns expected value' );
  	t.end();
  });
  
  }).call(this)}).call(this,"/lib/node_modules/@stdlib/array/typed-integer-dtypes/test/test.js")
  },{"./../lib":2,"tape":110}],5:[function(require,module,exports){
  'use strict'
  
  exports.byteLength = byteLength
  exports.toByteArray = toByteArray
  exports.fromByteArray = fromByteArray
  
  var lookup = []
  var revLookup = []
  var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
  
  var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
  for (var i = 0, len = code.length; i < len; ++i) {
    lookup[i] = code[i]
    revLookup[code.charCodeAt(i)] = i
  }
  
  // Support decoding URL-safe base64 strings, as Node.js does.
  // See: https://en.wikipedia.org/wiki/Base64#URL_applications
  revLookup['-'.charCodeAt(0)] = 62
  revLookup['_'.charCodeAt(0)] = 63
  
  function getLens (b64) {
    var len = b64.length
  
    if (len % 4 > 0) {
      throw new Error('Invalid string. Length must be a multiple of 4')
    }
  
    // Trim off extra bytes after placeholder bytes are found
    // See: https://github.com/beatgammit/base64-js/issues/42
    var validLen = b64.indexOf('=')
    if (validLen === -1) validLen = len
  
    var placeHoldersLen = validLen === len
      ? 0
      : 4 - (validLen % 4)
  
    return [validLen, placeHoldersLen]
  }
  
  // base64 is 4/3 + up to two characters of the original data
  function byteLength (b64) {
    var lens = getLens(b64)
    var validLen = lens[0]
    var placeHoldersLen = lens[1]
    return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
  }
  
  function _byteLength (b64, validLen, placeHoldersLen) {
    return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
  }
  
  function toByteArray (b64) {
    var tmp
    var lens = getLens(b64)
    var validLen = lens[0]
    var placeHoldersLen = lens[1]
  
    var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))
  
    var curByte = 0
  
    // if there are placeholders, only get up to the last complete 4 chars
    var len = placeHoldersLen > 0
      ? validLen - 4
      : validLen
  
    var i
    for (i = 0; i < len; i += 4) {
      tmp =
        (revLookup[b64.charCodeAt(i)] << 18) |
        (revLookup[b64.charCodeAt(i + 1)] << 12) |
        (revLookup[b64.charCodeAt(i + 2)] << 6) |
        revLookup[b64.charCodeAt(i + 3)]
      arr[curByte++] = (tmp >> 16) & 0xFF
      arr[curByte++] = (tmp >> 8) & 0xFF
      arr[curByte++] = tmp & 0xFF
    }
  
    if (placeHoldersLen === 2) {
      tmp =
        (revLookup[b64.charCodeAt(i)] << 2) |
        (revLookup[b64.charCodeAt(i + 1)] >> 4)
      arr[curByte++] = tmp & 0xFF
    }
  
    if (placeHoldersLen === 1) {
      tmp =
        (revLookup[b64.charCodeAt(i)] << 10) |
        (revLookup[b64.charCodeAt(i + 1)] << 4) |
        (revLookup[b64.charCodeAt(i + 2)] >> 2)
      arr[curByte++] = (tmp >> 8) & 0xFF
      arr[curByte++] = tmp & 0xFF
    }
  
    return arr
  }
  
  function tripletToBase64 (num) {
    return lookup[num >> 18 & 0x3F] +
      lookup[num >> 12 & 0x3F] +
      lookup[num >> 6 & 0x3F] +
      lookup[num & 0x3F]
  }
  
  function encodeChunk (uint8, start, end) {
    var tmp
    var output = []
    for (var i = start; i < end; i += 3) {
      tmp =
        ((uint8[i] << 16) & 0xFF0000) +
        ((uint8[i + 1] << 8) & 0xFF00) +
        (uint8[i + 2] & 0xFF)
      output.push(tripletToBase64(tmp))
    }
    return output.join('')
  }
  
  function fromByteArray (uint8) {
    var tmp
    var len = uint8.length
    var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
    var parts = []
    var maxChunkLength = 16383 // must be multiple of 3
  
    // go through the array every three bytes, we'll deal with trailing stuff later
    for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
      parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
    }
  
    // pad the end with zeros, but make sure to not forget the extra bytes
    if (extraBytes === 1) {
      tmp = uint8[len - 1]
      parts.push(
        lookup[tmp >> 2] +
        lookup[(tmp << 4) & 0x3F] +
        '=='
      )
    } else if (extraBytes === 2) {
      tmp = (uint8[len - 2] << 8) + uint8[len - 1]
      parts.push(
        lookup[tmp >> 10] +
        lookup[(tmp >> 4) & 0x3F] +
        lookup[(tmp << 2) & 0x3F] +
        '='
      )
    }
  
    return parts.join('')
  }
  
  },{}],6:[function(require,module,exports){
  
  },{}],7:[function(require,module,exports){
  arguments[4][6][0].apply(exports,arguments)
  },{"dup":6}],8:[function(require,module,exports){
  (function (Buffer){(function (){
  /*!
   * The buffer module from node.js, for the browser.
   *
   * @author   Feross Aboukhadijeh <https://feross.org>
   * @license  MIT
   */
  /* eslint-disable no-proto */
  
  'use strict'
  
  var base64 = require('base64-js')
  var ieee754 = require('ieee754')
  
  exports.Buffer = Buffer
  exports.SlowBuffer = SlowBuffer
  exports.INSPECT_MAX_BYTES = 50
  
  var K_MAX_LENGTH = 0x7fffffff
  exports.kMaxLength = K_MAX_LENGTH
  
  /**
   * If `Buffer.TYPED_ARRAY_SUPPORT`:
   *   === true    Use Uint8Array implementation (fastest)
   *   === false   Print warning and recommend using `buffer` v4.x which has an Object
   *               implementation (most compatible, even IE6)
   *
   * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
   * Opera 11.6+, iOS 4.2+.
   *
   * We report that the browser does not support typed arrays if the are not subclassable
   * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
   * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
   * for __proto__ and has a buggy typed array implementation.
   */
  Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()
  
  if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
      typeof console.error === 'function') {
    console.error(
      'This browser lacks typed array (Uint8Array) support which is required by ' +
      '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
    )
  }
  
  function typedArraySupport () {
    // Can typed array instances can be augmented?
    try {
      var arr = new Uint8Array(1)
      arr.__proto__ = { __proto__: Uint8Array.prototype, foo: function () { return 42 } }
      return arr.foo() === 42
    } catch (e) {
      return false
    }
  }
  
  Object.defineProperty(Buffer.prototype, 'parent', {
    enumerable: true,
    get: function () {
      if (!Buffer.isBuffer(this)) return undefined
      return this.buffer
    }
  })
  
  Object.defineProperty(Buffer.prototype, 'offset', {
    enumerable: true,
    get: function () {
      if (!Buffer.isBuffer(this)) return undefined
      return this.byteOffset
    }
  })
  
  function createBuffer (length) {
    if (length > K_MAX_LENGTH) {
      throw new RangeError('The value "' + length + '" is invalid for option "size"')
    }
    // Return an augmented `Uint8Array` instance
    var buf = new Uint8Array(length)
    buf.__proto__ = Buffer.prototype
    return buf
  }
  
  /**
   * The Buffer constructor returns instances of `Uint8Array` that have their
   * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
   * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
   * and the `Uint8Array` methods. Square bracket notation works as expected -- it
   * returns a single octet.
   *
   * The `Uint8Array` prototype remains unmodified.
   */
  
  function Buffer (arg, encodingOrOffset, length) {
    // Common case.
    if (typeof arg === 'number') {
      if (typeof encodingOrOffset === 'string') {
        throw new TypeError(
          'The "string" argument must be of type string. Received type number'
        )
      }
      return allocUnsafe(arg)
    }
    return from(arg, encodingOrOffset, length)
  }
  
  // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
  if (typeof Symbol !== 'undefined' && Symbol.species != null &&
      Buffer[Symbol.species] === Buffer) {
    Object.defineProperty(Buffer, Symbol.species, {
      value: null,
      configurable: true,
      enumerable: false,
      writable: false
    })
  }
  
  Buffer.poolSize = 8192 // not used by this implementation
  
  function from (value, encodingOrOffset, length) {
    if (typeof value === 'string') {
      return fromString(value, encodingOrOffset)
    }
  
    if (ArrayBuffer.isView(value)) {
      return fromArrayLike(value)
    }
  
    if (value == null) {
      throw TypeError(
        'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
        'or Array-like Object. Received type ' + (typeof value)
      )
    }
  
    if (isInstance(value, ArrayBuffer) ||
        (value && isInstance(value.buffer, ArrayBuffer))) {
      return fromArrayBuffer(value, encodingOrOffset, length)
    }
  
    if (typeof value === 'number') {
      throw new TypeError(
        'The "value" argument must not be of type number. Received type number'
      )
    }
  
    var valueOf = value.valueOf && value.valueOf()
    if (valueOf != null && valueOf !== value) {
      return Buffer.from(valueOf, encodingOrOffset, length)
    }
  
    var b = fromObject(value)
    if (b) return b
  
    if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null &&
        typeof value[Symbol.toPrimitive] === 'function') {
      return Buffer.from(
        value[Symbol.toPrimitive]('string'), encodingOrOffset, length
      )
    }
  
    throw new TypeError(
      'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
      'or Array-like Object. Received type ' + (typeof value)
    )
  }
  
  /**
   * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
   * if value is a number.
   * Buffer.from(str[, encoding])
   * Buffer.from(array)
   * Buffer.from(buffer)
   * Buffer.from(arrayBuffer[, byteOffset[, length]])
   **/
  Buffer.from = function (value, encodingOrOffset, length) {
    return from(value, encodingOrOffset, length)
  }
  
  // Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
  // https://github.com/feross/buffer/pull/148
  Buffer.prototype.__proto__ = Uint8Array.prototype
  Buffer.__proto__ = Uint8Array
  
  function assertSize (size) {
    if (typeof size !== 'number') {
      throw new TypeError('"size" argument must be of type number')
    } else if (size < 0) {
      throw new RangeError('The value "' + size + '" is invalid for option "size"')
    }
  }
  
  function alloc (size, fill, encoding) {
    assertSize(size)
    if (size <= 0) {
      return createBuffer(size)
    }
    if (fill !== undefined) {
      // Only pay attention to encoding if it's a string. This
      // prevents accidentally sending in a number that would
      // be interpretted as a start offset.
      return typeof encoding === 'string'
        ? createBuffer(size).fill(fill, encoding)
        : createBuffer(size).fill(fill)
    }
    return createBuffer(size)
  }
  
  /**
   * Creates a new filled Buffer instance.
   * alloc(size[, fill[, encoding]])
   **/
  Buffer.alloc = function (size, fill, encoding) {
    return alloc(size, fill, encoding)
  }
  
  function allocUnsafe (size) {
    assertSize(size)
    return createBuffer(size < 0 ? 0 : checked(size) | 0)
  }
  
  /**
   * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
   * */
  Buffer.allocUnsafe = function (size) {
    return allocUnsafe(size)
  }
  /**
   * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
   */
  Buffer.allocUnsafeSlow = function (size) {
    return allocUnsafe(size)
  }
  
  function fromString (string, encoding) {
    if (typeof encoding !== 'string' || encoding === '') {
      encoding = 'utf8'
    }
  
    if (!Buffer.isEncoding(encoding)) {
      throw new TypeError('Unknown encoding: ' + encoding)
    }
  
    var length = byteLength(string, encoding) | 0
    var buf = createBuffer(length)
  
    var actual = buf.write(string, encoding)
  
    if (actual !== length) {
      // Writing a hex string, for example, that contains invalid characters will
      // cause everything after the first invalid character to be ignored. (e.g.
      // 'abxxcd' will be treated as 'ab')
      buf = buf.slice(0, actual)
    }
  
    return buf
  }
  
  function fromArrayLike (array) {
    var length = array.length < 0 ? 0 : checked(array.length) | 0
    var buf = createBuffer(length)
    for (var i = 0; i < length; i += 1) {
      buf[i] = array[i] & 255
    }
    return buf
  }
  
  function fromArrayBuffer (array, byteOffset, length) {
    if (byteOffset < 0 || array.byteLength < byteOffset) {
      throw new RangeError('"offset" is outside of buffer bounds')
    }
  
    if (array.byteLength < byteOffset + (length || 0)) {
      throw new RangeError('"length" is outside of buffer bounds')
    }
  
    var buf
    if (byteOffset === undefined && length === undefined) {
      buf = new Uint8Array(array)
    } else if (length === undefined) {
      buf = new Uint8Array(array, byteOffset)
    } else {
      buf = new Uint8Array(array, byteOffset, length)
    }
  
    // Return an augmented `Uint8Array` instance
    buf.__proto__ = Buffer.prototype
    return buf
  }
  
  function fromObject (obj) {
    if (Buffer.isBuffer(obj)) {
      var len = checked(obj.length) | 0
      var buf = createBuffer(len)
  
      if (buf.length === 0) {
        return buf
      }
  
      obj.copy(buf, 0, 0, len)
      return buf
    }
  
    if (obj.length !== undefined) {
      if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
        return createBuffer(0)
      }
      return fromArrayLike(obj)
    }
  
    if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
      return fromArrayLike(obj.data)
    }
  }
  
  function checked (length) {
    // Note: cannot use `length < K_MAX_LENGTH` here because that fails when
    // length is NaN (which is otherwise coerced to zero.)
    if (length >= K_MAX_LENGTH) {
      throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
                           'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
    }
    return length | 0
  }
  
  function SlowBuffer (length) {
    if (+length != length) { // eslint-disable-line eqeqeq
      length = 0
    }
    return Buffer.alloc(+length)
  }
  
  Buffer.isBuffer = function isBuffer (b) {
    return b != null && b._isBuffer === true &&
      b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false
  }
  
  Buffer.compare = function compare (a, b) {
    if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength)
    if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength)
    if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
      throw new TypeError(
        'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array'
      )
    }
  
    if (a === b) return 0
  
    var x = a.length
    var y = b.length
  
    for (var i = 0, len = Math.min(x, y); i < len; ++i) {
      if (a[i] !== b[i]) {
        x = a[i]
        y = b[i]
        break
      }
    }
  
    if (x < y) return -1
    if (y < x) return 1
    return 0
  }
  
  Buffer.isEncoding = function isEncoding (encoding) {
    switch (String(encoding).toLowerCase()) {
      case 'hex':
      case 'utf8':
      case 'utf-8':
      case 'ascii':
      case 'latin1':
      case 'binary':
      case 'base64':
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return true
      default:
        return false
    }
  }
  
  Buffer.concat = function concat (list, length) {
    if (!Array.isArray(list)) {
      throw new TypeError('"list" argument must be an Array of Buffers')
    }
  
    if (list.length === 0) {
      return Buffer.alloc(0)
    }
  
    var i
    if (length === undefined) {
      length = 0
      for (i = 0; i < list.length; ++i) {
        length += list[i].length
      }
    }
  
    var buffer = Buffer.allocUnsafe(length)
    var pos = 0
    for (i = 0; i < list.length; ++i) {
      var buf = list[i]
      if (isInstance(buf, Uint8Array)) {
        buf = Buffer.from(buf)
      }
      if (!Buffer.isBuffer(buf)) {
        throw new TypeError('"list" argument must be an Array of Buffers')
      }
      buf.copy(buffer, pos)
      pos += buf.length
    }
    return buffer
  }
  
  function byteLength (string, encoding) {
    if (Buffer.isBuffer(string)) {
      return string.length
    }
    if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) {
      return string.byteLength
    }
    if (typeof string !== 'string') {
      throw new TypeError(
        'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' +
        'Received type ' + typeof string
      )
    }
  
    var len = string.length
    var mustMatch = (arguments.length > 2 && arguments[2] === true)
    if (!mustMatch && len === 0) return 0
  
    // Use a for loop to avoid recursion
    var loweredCase = false
    for (;;) {
      switch (encoding) {
        case 'ascii':
        case 'latin1':
        case 'binary':
          return len
        case 'utf8':
        case 'utf-8':
          return utf8ToBytes(string).length
        case 'ucs2':
        case 'ucs-2':
        case 'utf16le':
        case 'utf-16le':
          return len * 2
        case 'hex':
          return len >>> 1
        case 'base64':
          return base64ToBytes(string).length
        default:
          if (loweredCase) {
            return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8
          }
          encoding = ('' + encoding).toLowerCase()
          loweredCase = true
      }
    }
  }
  Buffer.byteLength = byteLength
  
  function slowToString (encoding, start, end) {
    var loweredCase = false
  
    // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
    // property of a typed array.
  
    // This behaves neither like String nor Uint8Array in that we set start/end
    // to their upper/lower bounds if the value passed is out of range.
    // undefined is handled specially as per ECMA-262 6th Edition,
    // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
    if (start === undefined || start < 0) {
      start = 0
    }
    // Return early if start > this.length. Done here to prevent potential uint32
    // coercion fail below.
    if (start > this.length) {
      return ''
    }
  
    if (end === undefined || end > this.length) {
      end = this.length
    }
  
    if (end <= 0) {
      return ''
    }
  
    // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
    end >>>= 0
    start >>>= 0
  
    if (end <= start) {
      return ''
    }
  
    if (!encoding) encoding = 'utf8'
  
    while (true) {
      switch (encoding) {
        case 'hex':
          return hexSlice(this, start, end)
  
        case 'utf8':
        case 'utf-8':
          return utf8Slice(this, start, end)
  
        case 'ascii':
          return asciiSlice(this, start, end)
  
        case 'latin1':
        case 'binary':
          return latin1Slice(this, start, end)
  
        case 'base64':
          return base64Slice(this, start, end)
  
        case 'ucs2':
        case 'ucs-2':
        case 'utf16le':
        case 'utf-16le':
          return utf16leSlice(this, start, end)
  
        default:
          if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
          encoding = (encoding + '').toLowerCase()
          loweredCase = true
      }
    }
  }
  
  // This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
  // to detect a Buffer instance. It's not possible to use `instanceof Buffer`
  // reliably in a browserify context because there could be multiple different
  // copies of the 'buffer' package in use. This method works even for Buffer
  // instances that were created from another copy of the `buffer` package.
  // See: https://github.com/feross/buffer/issues/154
  Buffer.prototype._isBuffer = true
  
  function swap (b, n, m) {
    var i = b[n]
    b[n] = b[m]
    b[m] = i
  }
  
  Buffer.prototype.swap16 = function swap16 () {
    var len = this.length
    if (len % 2 !== 0) {
      throw new RangeError('Buffer size must be a multiple of 16-bits')
    }
    for (var i = 0; i < len; i += 2) {
      swap(this, i, i + 1)
    }
    return this
  }
  
  Buffer.prototype.swap32 = function swap32 () {
    var len = this.length
    if (len % 4 !== 0) {
      throw new RangeError('Buffer size must be a multiple of 32-bits')
    }
    for (var i = 0; i < len; i += 4) {
      swap(this, i, i + 3)
      swap(this, i + 1, i + 2)
    }
    return this
  }
  
  Buffer.prototype.swap64 = function swap64 () {
    var len = this.length
    if (len % 8 !== 0) {
      throw new RangeError('Buffer size must be a multiple of 64-bits')
    }
    for (var i = 0; i < len; i += 8) {
      swap(this, i, i + 7)
      swap(this, i + 1, i + 6)
      swap(this, i + 2, i + 5)
      swap(this, i + 3, i + 4)
    }
    return this
  }
  
  Buffer.prototype.toString = function toString () {
    var length = this.length
    if (length === 0) return ''
    if (arguments.length === 0) return utf8Slice(this, 0, length)
    return slowToString.apply(this, arguments)
  }
  
  Buffer.prototype.toLocaleString = Buffer.prototype.toString
  
  Buffer.prototype.equals = function equals (b) {
    if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
    if (this === b) return true
    return Buffer.compare(this, b) === 0
  }
  
  Buffer.prototype.inspect = function inspect () {
    var str = ''
    var max = exports.INSPECT_MAX_BYTES
    str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim()
    if (this.length > max) str += ' ... '
    return '<Buffer ' + str + '>'
  }
  
  Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
    if (isInstance(target, Uint8Array)) {
      target = Buffer.from(target, target.offset, target.byteLength)
    }
    if (!Buffer.isBuffer(target)) {
      throw new TypeError(
        'The "target" argument must be one of type Buffer or Uint8Array. ' +
        'Received type ' + (typeof target)
      )
    }
  
    if (start === undefined) {
      start = 0
    }
    if (end === undefined) {
      end = target ? target.length : 0
    }
    if (thisStart === undefined) {
      thisStart = 0
    }
    if (thisEnd === undefined) {
      thisEnd = this.length
    }
  
    if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
      throw new RangeError('out of range index')
    }
  
    if (thisStart >= thisEnd && start >= end) {
      return 0
    }
    if (thisStart >= thisEnd) {
      return -1
    }
    if (start >= end) {
      return 1
    }
  
    start >>>= 0
    end >>>= 0
    thisStart >>>= 0
    thisEnd >>>= 0
  
    if (this === target) return 0
  
    var x = thisEnd - thisStart
    var y = end - start
    var len = Math.min(x, y)
  
    var thisCopy = this.slice(thisStart, thisEnd)
    var targetCopy = target.slice(start, end)
  
    for (var i = 0; i < len; ++i) {
      if (thisCopy[i] !== targetCopy[i]) {
        x = thisCopy[i]
        y = targetCopy[i]
        break
      }
    }
  
    if (x < y) return -1
    if (y < x) return 1
    return 0
  }
  
  // Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
  // OR the last index of `val` in `buffer` at offset <= `byteOffset`.
  //
  // Arguments:
  // - buffer - a Buffer to search
  // - val - a string, Buffer, or number
  // - byteOffset - an index into `buffer`; will be clamped to an int32
  // - encoding - an optional encoding, relevant is val is a string
  // - dir - true for indexOf, false for lastIndexOf
  function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
    // Empty buffer means no match
    if (buffer.length === 0) return -1
  
    // Normalize byteOffset
    if (typeof byteOffset === 'string') {
      encoding = byteOffset
      byteOffset = 0
    } else if (byteOffset > 0x7fffffff) {
      byteOffset = 0x7fffffff
    } else if (byteOffset < -0x80000000) {
      byteOffset = -0x80000000
    }
    byteOffset = +byteOffset // Coerce to Number.
    if (numberIsNaN(byteOffset)) {
      // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
      byteOffset = dir ? 0 : (buffer.length - 1)
    }
  
    // Normalize byteOffset: negative offsets start from the end of the buffer
    if (byteOffset < 0) byteOffset = buffer.length + byteOffset
    if (byteOffset >= buffer.length) {
      if (dir) return -1
      else byteOffset = buffer.length - 1
    } else if (byteOffset < 0) {
      if (dir) byteOffset = 0
      else return -1
    }
  
    // Normalize val
    if (typeof val === 'string') {
      val = Buffer.from(val, encoding)
    }
  
    // Finally, search either indexOf (if dir is true) or lastIndexOf
    if (Buffer.isBuffer(val)) {
      // Special case: looking for empty string/buffer always fails
      if (val.length === 0) {
        return -1
      }
      return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
    } else if (typeof val === 'number') {
      val = val & 0xFF // Search for a byte value [0-255]
      if (typeof Uint8Array.prototype.indexOf === 'function') {
        if (dir) {
          return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
        } else {
          return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
        }
      }
      return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
    }
  
    throw new TypeError('val must be string, number or Buffer')
  }
  
  function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
    var indexSize = 1
    var arrLength = arr.length
    var valLength = val.length
  
    if (encoding !== undefined) {
      encoding = String(encoding).toLowerCase()
      if (encoding === 'ucs2' || encoding === 'ucs-2' ||
          encoding === 'utf16le' || encoding === 'utf-16le') {
        if (arr.length < 2 || val.length < 2) {
          return -1
        }
        indexSize = 2
        arrLength /= 2
        valLength /= 2
        byteOffset /= 2
      }
    }
  
    function read (buf, i) {
      if (indexSize === 1) {
        return buf[i]
      } else {
        return buf.readUInt16BE(i * indexSize)
      }
    }
  
    var i
    if (dir) {
      var foundIndex = -1
      for (i = byteOffset; i < arrLength; i++) {
        if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
          if (foundIndex === -1) foundIndex = i
          if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
        } else {
          if (foundIndex !== -1) i -= i - foundIndex
          foundIndex = -1
        }
      }
    } else {
      if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
      for (i = byteOffset; i >= 0; i--) {
        var found = true
        for (var j = 0; j < valLength; j++) {
          if (read(arr, i + j) !== read(val, j)) {
            found = false
            break
          }
        }
        if (found) return i
      }
    }
  
    return -1
  }
  
  Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
    return this.indexOf(val, byteOffset, encoding) !== -1
  }
  
  Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
    return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
  }
  
  Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
    return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
  }
  
  function hexWrite (buf, string, offset, length) {
    offset = Number(offset) || 0
    var remaining = buf.length - offset
    if (!length) {
      length = remaining
    } else {
      length = Number(length)
      if (length > remaining) {
        length = remaining
      }
    }
  
    var strLen = string.length
  
    if (length > strLen / 2) {
      length = strLen / 2
    }
    for (var i = 0; i < length; ++i) {
      var parsed = parseInt(string.substr(i * 2, 2), 16)
      if (numberIsNaN(parsed)) return i
      buf[offset + i] = parsed
    }
    return i
  }
  
  function utf8Write (buf, string, offset, length) {
    return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
  }
  
  function asciiWrite (buf, string, offset, length) {
    return blitBuffer(asciiToBytes(string), buf, offset, length)
  }
  
  function latin1Write (buf, string, offset, length) {
    return asciiWrite(buf, string, offset, length)
  }
  
  function base64Write (buf, string, offset, length) {
    return blitBuffer(base64ToBytes(string), buf, offset, length)
  }
  
  function ucs2Write (buf, string, offset, length) {
    return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
  }
  
  Buffer.prototype.write = function write (string, offset, length, encoding) {
    // Buffer#write(string)
    if (offset === undefined) {
      encoding = 'utf8'
      length = this.length
      offset = 0
    // Buffer#write(string, encoding)
    } else if (length === undefined && typeof offset === 'string') {
      encoding = offset
      length = this.length
      offset = 0
    // Buffer#write(string, offset[, length][, encoding])
    } else if (isFinite(offset)) {
      offset = offset >>> 0
      if (isFinite(length)) {
        length = length >>> 0
        if (encoding === undefined) encoding = 'utf8'
      } else {
        encoding = length
        length = undefined
      }
    } else {
      throw new Error(
        'Buffer.write(string, encoding, offset[, length]) is no longer supported'
      )
    }
  
    var remaining = this.length - offset
    if (length === undefined || length > remaining) length = remaining
  
    if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
      throw new RangeError('Attempt to write outside buffer bounds')
    }
  
    if (!encoding) encoding = 'utf8'
  
    var loweredCase = false
    for (;;) {
      switch (encoding) {
        case 'hex':
          return hexWrite(this, string, offset, length)
  
        case 'utf8':
        case 'utf-8':
          return utf8Write(this, string, offset, length)
  
        case 'ascii':
          return asciiWrite(this, string, offset, length)
  
        case 'latin1':
        case 'binary':
          return latin1Write(this, string, offset, length)
  
        case 'base64':
          // Warning: maxLength not taken into account in base64Write
          return base64Write(this, string, offset, length)
  
        case 'ucs2':
        case 'ucs-2':
        case 'utf16le':
        case 'utf-16le':
          return ucs2Write(this, string, offset, length)
  
        default:
          if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
          encoding = ('' + encoding).toLowerCase()
          loweredCase = true
      }
    }
  }
  
  Buffer.prototype.toJSON = function toJSON () {
    return {
      type: 'Buffer',
      data: Array.prototype.slice.call(this._arr || this, 0)
    }
  }
  
  function base64Slice (buf, start, end) {
    if (start === 0 && end === buf.length) {
      return base64.fromByteArray(buf)
    } else {
      return base64.fromByteArray(buf.slice(start, end))
    }
  }
  
  function utf8Slice (buf, start, end) {
    end = Math.min(buf.length, end)
    var res = []
  
    var i = start
    while (i < end) {
      var firstByte = buf[i]
      var codePoint = null
      var bytesPerSequence = (firstByte > 0xEF) ? 4
        : (firstByte > 0xDF) ? 3
          : (firstByte > 0xBF) ? 2
            : 1
  
      if (i + bytesPerSequence <= end) {
        var secondByte, thirdByte, fourthByte, tempCodePoint
  
        switch (bytesPerSequence) {
          case 1:
            if (firstByte < 0x80) {
              codePoint = firstByte
            }
            break
          case 2:
            secondByte = buf[i + 1]
            if ((secondByte & 0xC0) === 0x80) {
              tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
              if (tempCodePoint > 0x7F) {
                codePoint = tempCodePoint
              }
            }
            break
          case 3:
            secondByte = buf[i + 1]
            thirdByte = buf[i + 2]
            if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
              tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
              if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
                codePoint = tempCodePoint
              }
            }
            break
          case 4:
            secondByte = buf[i + 1]
            thirdByte = buf[i + 2]
            fourthByte = buf[i + 3]
            if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
              tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
              if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
                codePoint = tempCodePoint
              }
            }
        }
      }
  
      if (codePoint === null) {
        // we did not generate a valid codePoint so insert a
        // replacement char (U+FFFD) and advance only 1 byte
        codePoint = 0xFFFD
        bytesPerSequence = 1
      } else if (codePoint > 0xFFFF) {
        // encode to utf16 (surrogate pair dance)
        codePoint -= 0x10000
        res.push(codePoint >>> 10 & 0x3FF | 0xD800)
        codePoint = 0xDC00 | codePoint & 0x3FF
      }
  
      res.push(codePoint)
      i += bytesPerSequence
    }
  
    return decodeCodePointsArray(res)
  }
  
  // Based on http://stackoverflow.com/a/22747272/680742, the browser with
  // the lowest limit is Chrome, with 0x10000 args.
  // We go 1 magnitude less, for safety
  var MAX_ARGUMENTS_LENGTH = 0x1000
  
  function decodeCodePointsArray (codePoints) {
    var len = codePoints.length
    if (len <= MAX_ARGUMENTS_LENGTH) {
      return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
    }
  
    // Decode in chunks to avoid "call stack size exceeded".
    var res = ''
    var i = 0
    while (i < len) {
      res += String.fromCharCode.apply(
        String,
        codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
      )
    }
    return res
  }
  
  function asciiSlice (buf, start, end) {
    var ret = ''
    end = Math.min(buf.length, end)
  
    for (var i = start; i < end; ++i) {
      ret += String.fromCharCode(buf[i] & 0x7F)
    }
    return ret
  }
  
  function latin1Slice (buf, start, end) {
    var ret = ''
    end = Math.min(buf.length, end)
  
    for (var i = start; i < end; ++i) {
      ret += String.fromCharCode(buf[i])
    }
    return ret
  }
  
  function hexSlice (buf, start, end) {
    var len = buf.length
  
    if (!start || start < 0) start = 0
    if (!end || end < 0 || end > len) end = len
  
    var out = ''
    for (var i = start; i < end; ++i) {
      out += toHex(buf[i])
    }
    return out
  }
  
  function utf16leSlice (buf, start, end) {
    var bytes = buf.slice(start, end)
    var res = ''
    for (var i = 0; i < bytes.length; i += 2) {
      res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
    }
    return res
  }
  
  Buffer.prototype.slice = function slice (start, end) {
    var len = this.length
    start = ~~start
    end = end === undefined ? len : ~~end
  
    if (start < 0) {
      start += len
      if (start < 0) start = 0
    } else if (start > len) {
      start = len
    }
  
    if (end < 0) {
      end += len
      if (end < 0) end = 0
    } else if (end > len) {
      end = len
    }
  
    if (end < start) end = start
  
    var newBuf = this.subarray(start, end)
    // Return an augmented `Uint8Array` instance
    newBuf.__proto__ = Buffer.prototype
    return newBuf
  }
  
  /*
   * Need to make sure that buffer isn't trying to write out of bounds.
   */
  function checkOffset (offset, ext, length) {
    if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
    if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
  }
  
  Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
    offset = offset >>> 0
    byteLength = byteLength >>> 0
    if (!noAssert) checkOffset(offset, byteLength, this.length)
  
    var val = this[offset]
    var mul = 1
    var i = 0
    while (++i < byteLength && (mul *= 0x100)) {
      val += this[offset + i] * mul
    }
  
    return val
  }
  
  Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
    offset = offset >>> 0
    byteLength = byteLength >>> 0
    if (!noAssert) {
      checkOffset(offset, byteLength, this.length)
    }
  
    var val = this[offset + --byteLength]
    var mul = 1
    while (byteLength > 0 && (mul *= 0x100)) {
      val += this[offset + --byteLength] * mul
    }
  
    return val
  }
  
  Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
    offset = offset >>> 0
    if (!noAssert) checkOffset(offset, 1, this.length)
    return this[offset]
  }
  
  Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
    offset = offset >>> 0
    if (!noAssert) checkOffset(offset, 2, this.length)
    return this[offset] | (this[offset + 1] << 8)
  }
  
  Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
    offset = offset >>> 0
    if (!noAssert) checkOffset(offset, 2, this.length)
    return (this[offset] << 8) | this[offset + 1]
  }
  
  Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
    offset = offset >>> 0
    if (!noAssert) checkOffset(offset, 4, this.length)
  
    return ((this[offset]) |
        (this[offset + 1] << 8) |
        (this[offset + 2] << 16)) +
        (this[offset + 3] * 0x1000000)
  }
  
  Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
    offset = offset >>> 0
    if (!noAssert) checkOffset(offset, 4, this.length)
  
    return (this[offset] * 0x1000000) +
      ((this[offset + 1] << 16) |
      (this[offset + 2] << 8) |
      this[offset + 3])
  }
  
  Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
    offset = offset >>> 0
    byteLength = byteLength >>> 0
    if (!noAssert) checkOffset(offset, byteLength, this.length)
  
    var val = this[offset]
    var mul = 1
    var i = 0
    while (++i < byteLength && (mul *= 0x100)) {
      val += this[offset + i] * mul
    }
    mul *= 0x80
  
    if (val >= mul) val -= Math.pow(2, 8 * byteLength)
  
    return val
  }
  
  Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
    offset = offset >>> 0
    byteLength = byteLength >>> 0
    if (!noAssert) checkOffset(offset, byteLength, this.length)
  
    var i = byteLength
    var mul = 1
    var val = this[offset + --i]
    while (i > 0 && (mul *= 0x100)) {
      val += this[offset + --i] * mul
    }
    mul *= 0x80
  
    if (val >= mul) val -= Math.pow(2, 8 * byteLength)
  
    return val
  }
  
  Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
    offset = offset >>> 0
    if (!noAssert) checkOffset(offset, 1, this.length)
    if (!(this[offset] & 0x80)) return (this[offset])
    return ((0xff - this[offset] + 1) * -1)
  }
  
  Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
    offset = offset >>> 0
    if (!noAssert) checkOffset(offset, 2, this.length)
    var val = this[offset] | (this[offset + 1] << 8)
    return (val & 0x8000) ? val | 0xFFFF0000 : val
  }
  
  Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
    offset = offset >>> 0
    if (!noAssert) checkOffset(offset, 2, this.length)
    var val = this[offset + 1] | (this[offset] << 8)
    return (val & 0x8000) ? val | 0xFFFF0000 : val
  }
  
  Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
    offset = offset >>> 0
    if (!noAssert) checkOffset(offset, 4, this.length)
  
    return (this[offset]) |
      (this[offset + 1] << 8) |
      (this[offset + 2] << 16) |
      (this[offset + 3] << 24)
  }
  
  Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
    offset = offset >>> 0
    if (!noAssert) checkOffset(offset, 4, this.length)
  
    return (this[offset] << 24) |
      (this[offset + 1] << 16) |
      (this[offset + 2] << 8) |
      (this[offset + 3])
  }
  
  Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
    offset = offset >>> 0
    if (!noAssert) checkOffset(offset, 4, this.length)
    return ieee754.read(this, offset, true, 23, 4)
  }
  
  Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
    offset = offset >>> 0
    if (!noAssert) checkOffset(offset, 4, this.length)
    return ieee754.read(this, offset, false, 23, 4)
  }
  
  Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
    offset = offset >>> 0
    if (!noAssert) checkOffset(offset, 8, this.length)
    return ieee754.read(this, offset, true, 52, 8)
  }
  
  Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
    offset = offset >>> 0
    if (!noAssert) checkOffset(offset, 8, this.length)
    return ieee754.read(this, offset, false, 52, 8)
  }
  
  function checkInt (buf, value, offset, ext, max, min) {
    if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
    if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
    if (offset + ext > buf.length) throw new RangeError('Index out of range')
  }
  
  Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
    value = +value
    offset = offset >>> 0
    byteLength = byteLength >>> 0
    if (!noAssert) {
      var maxBytes = Math.pow(2, 8 * byteLength) - 1
      checkInt(this, value, offset, byteLength, maxBytes, 0)
    }
  
    var mul = 1
    var i = 0
    this[offset] = value & 0xFF
    while (++i < byteLength && (mul *= 0x100)) {
      this[offset + i] = (value / mul) & 0xFF
    }
  
    return offset + byteLength
  }
  
  Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
    value = +value
    offset = offset >>> 0
    byteLength = byteLength >>> 0
    if (!noAssert) {
      var maxBytes = Math.pow(2, 8 * byteLength) - 1
      checkInt(this, value, offset, byteLength, maxBytes, 0)
    }
  
    var i = byteLength - 1
    var mul = 1
    this[offset + i] = value & 0xFF
    while (--i >= 0 && (mul *= 0x100)) {
      this[offset + i] = (value / mul) & 0xFF
    }
  
    return offset + byteLength
  }
  
  Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
    value = +value
    offset = offset >>> 0
    if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
    this[offset] = (value & 0xff)
    return offset + 1
  }
  
  Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
    value = +value
    offset = offset >>> 0
    if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
    this[offset] = (value & 0xff)
    this[offset + 1] = (value >>> 8)
    return offset + 2
  }
  
  Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
    value = +value
    offset = offset >>> 0
    if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
    this[offset] = (value >>> 8)
    this[offset + 1] = (value & 0xff)
    return offset + 2
  }
  
  Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
    value = +value
    offset = offset >>> 0
    if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
    this[offset + 3] = (value >>> 24)
    this[offset + 2] = (value >>> 16)
    this[offset + 1] = (value >>> 8)
    this[offset] = (value & 0xff)
    return offset + 4
  }
  
  Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
    value = +value
    offset = offset >>> 0
    if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
    this[offset] = (value >>> 24)
    this[offset + 1] = (value >>> 16)
    this[offset + 2] = (value >>> 8)
    this[offset + 3] = (value & 0xff)
    return offset + 4
  }
  
  Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
    value = +value
    offset = offset >>> 0
    if (!noAssert) {
      var limit = Math.pow(2, (8 * byteLength) - 1)
  
      checkInt(this, value, offset, byteLength, limit - 1, -limit)
    }
  
    var i = 0
    var mul = 1
    var sub = 0
    this[offset] = value & 0xFF
    while (++i < byteLength && (mul *= 0x100)) {
      if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
        sub = 1
      }
      this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
    }
  
    return offset + byteLength
  }
  
  Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
    value = +value
    offset = offset >>> 0
    if (!noAssert) {
      var limit = Math.pow(2, (8 * byteLength) - 1)
  
      checkInt(this, value, offset, byteLength, limit - 1, -limit)
    }
  
    var i = byteLength - 1
    var mul = 1
    var sub = 0
    this[offset + i] = value & 0xFF
    while (--i >= 0 && (mul *= 0x100)) {
      if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
        sub = 1
      }
      this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
    }
  
    return offset + byteLength
  }
  
  Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
    value = +value
    offset = offset >>> 0
    if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
    if (value < 0) value = 0xff + value + 1
    this[offset] = (value & 0xff)
    return offset + 1
  }
  
  Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
    value = +value
    offset = offset >>> 0
    if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
    this[offset] = (value & 0xff)
    this[offset + 1] = (value >>> 8)
    return offset + 2
  }
  
  Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
    value = +value
    offset = offset >>> 0
    if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
    this[offset] = (value >>> 8)
    this[offset + 1] = (value & 0xff)
    return offset + 2
  }
  
  Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
    value = +value
    offset = offset >>> 0
    if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
    this[offset] = (value & 0xff)
    this[offset + 1] = (value >>> 8)
    this[offset + 2] = (value >>> 16)
    this[offset + 3] = (value >>> 24)
    return offset + 4
  }
  
  Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
    value = +value
    offset = offset >>> 0
    if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
    if (value < 0) value = 0xffffffff + value + 1
    this[offset] = (value >>> 24)
    this[offset + 1] = (value >>> 16)
    this[offset + 2] = (value >>> 8)
    this[offset + 3] = (value & 0xff)
    return offset + 4
  }
  
  function checkIEEE754 (buf, value, offset, ext, max, min) {
    if (offset + ext > buf.length) throw new RangeError('Index out of range')
    if (offset < 0) throw new RangeError('Index out of range')
  }
  
  function writeFloat (buf, value, offset, littleEndian, noAssert) {
    value = +value
    offset = offset >>> 0
    if (!noAssert) {
      checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
    }
    ieee754.write(buf, value, offset, littleEndian, 23, 4)
    return offset + 4
  }
  
  Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
    return writeFloat(this, value, offset, true, noAssert)
  }
  
  Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
    return writeFloat(this, value, offset, false, noAssert)
  }
  
  function writeDouble (buf, value, offset, littleEndian, noAssert) {
    value = +value
    offset = offset >>> 0
    if (!noAssert) {
      checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
    }
    ieee754.write(buf, value, offset, littleEndian, 52, 8)
    return offset + 8
  }
  
  Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
    return writeDouble(this, value, offset, true, noAssert)
  }
  
  Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
    return writeDouble(this, value, offset, false, noAssert)
  }
  
  // copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
  Buffer.prototype.copy = function copy (target, targetStart, start, end) {
    if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer')
    if (!start) start = 0
    if (!end && end !== 0) end = this.length
    if (targetStart >= target.length) targetStart = target.length
    if (!targetStart) targetStart = 0
    if (end > 0 && end < start) end = start
  
    // Copy 0 bytes; we're done
    if (end === start) return 0
    if (target.length === 0 || this.length === 0) return 0
  
    // Fatal error conditions
    if (targetStart < 0) {
      throw new RangeError('targetStart out of bounds')
    }
    if (start < 0 || start >= this.length) throw new RangeError('Index out of range')
    if (end < 0) throw new RangeError('sourceEnd out of bounds')
  
    // Are we oob?
    if (end > this.length) end = this.length
    if (target.length - targetStart < end - start) {
      end = target.length - targetStart + start
    }
  
    var len = end - start
  
    if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') {
      // Use built-in when available, missing from IE11
      this.copyWithin(targetStart, start, end)
    } else if (this === target && start < targetStart && targetStart < end) {
      // descending copy from end
      for (var i = len - 1; i >= 0; --i) {
        target[i + targetStart] = this[i + start]
      }
    } else {
      Uint8Array.prototype.set.call(
        target,
        this.subarray(start, end),
        targetStart
      )
    }
  
    return len
  }
  
  // Usage:
  //    buffer.fill(number[, offset[, end]])
  //    buffer.fill(buffer[, offset[, end]])
  //    buffer.fill(string[, offset[, end]][, encoding])
  Buffer.prototype.fill = function fill (val, start, end, encoding) {
    // Handle string cases:
    if (typeof val === 'string') {
      if (typeof start === 'string') {
        encoding = start
        start = 0
        end = this.length
      } else if (typeof end === 'string') {
        encoding = end
        end = this.length
      }
      if (encoding !== undefined && typeof encoding !== 'string') {
        throw new TypeError('encoding must be a string')
      }
      if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
        throw new TypeError('Unknown encoding: ' + encoding)
      }
      if (val.length === 1) {
        var code = val.charCodeAt(0)
        if ((encoding === 'utf8' && code < 128) ||
            encoding === 'latin1') {
          // Fast path: If `val` fits into a single byte, use that numeric value.
          val = code
        }
      }
    } else if (typeof val === 'number') {
      val = val & 255
    }
  
    // Invalid ranges are not set to a default, so can range check early.
    if (start < 0 || this.length < start || this.length < end) {
      throw new RangeError('Out of range index')
    }
  
    if (end <= start) {
      return this
    }
  
    start = start >>> 0
    end = end === undefined ? this.length : end >>> 0
  
    if (!val) val = 0
  
    var i
    if (typeof val === 'number') {
      for (i = start; i < end; ++i) {
        this[i] = val
      }
    } else {
      var bytes = Buffer.isBuffer(val)
        ? val
        : Buffer.from(val, encoding)
      var len = bytes.length
      if (len === 0) {
        throw new TypeError('The value "' + val +
          '" is invalid for argument "value"')
      }
      for (i = 0; i < end - start; ++i) {
        this[i + start] = bytes[i % len]
      }
    }
  
    return this
  }
  
  // HELPER FUNCTIONS
  // ================
  
  var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g
  
  function base64clean (str) {
    // Node takes equal signs as end of the Base64 encoding
    str = str.split('=')[0]
    // Node strips out invalid characters like \n and \t from the string, base64-js does not
    str = str.trim().replace(INVALID_BASE64_RE, '')
    // Node converts strings with length < 2 to ''
    if (str.length < 2) return ''
    // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
    while (str.length % 4 !== 0) {
      str = str + '='
    }
    return str
  }
  
  function toHex (n) {
    if (n < 16) return '0' + n.toString(16)
    return n.toString(16)
  }
  
  function utf8ToBytes (string, units) {
    units = units || Infinity
    var codePoint
    var length = string.length
    var leadSurrogate = null
    var bytes = []
  
    for (var i = 0; i < length; ++i) {
      codePoint = string.charCodeAt(i)
  
      // is surrogate component
      if (codePoint > 0xD7FF && codePoint < 0xE000) {
        // last char was a lead
        if (!leadSurrogate) {
          // no lead yet
          if (codePoint > 0xDBFF) {
            // unexpected trail
            if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
            continue
          } else if (i + 1 === length) {
            // unpaired lead
            if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
            continue
          }
  
          // valid lead
          leadSurrogate = codePoint
  
          continue
        }
  
        // 2 leads in a row
        if (codePoint < 0xDC00) {
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          leadSurrogate = codePoint
          continue
        }
  
        // valid surrogate pair
        codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
      } else if (leadSurrogate) {
        // valid bmp char, but last char was a lead
        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
      }
  
      leadSurrogate = null
  
      // encode utf8
      if (codePoint < 0x80) {
        if ((units -= 1) < 0) break
        bytes.push(codePoint)
      } else if (codePoint < 0x800) {
        if ((units -= 2) < 0) break
        bytes.push(
          codePoint >> 0x6 | 0xC0,
          codePoint & 0x3F | 0x80
        )
      } else if (codePoint < 0x10000) {
        if ((units -= 3) < 0) break
        bytes.push(
          codePoint >> 0xC | 0xE0,
          codePoint >> 0x6 & 0x3F | 0x80,
          codePoint & 0x3F | 0x80
        )
      } else if (codePoint < 0x110000) {
        if ((units -= 4) < 0) break
        bytes.push(
          codePoint >> 0x12 | 0xF0,
          codePoint >> 0xC & 0x3F | 0x80,
          codePoint >> 0x6 & 0x3F | 0x80,
          codePoint & 0x3F | 0x80
        )
      } else {
        throw new Error('Invalid code point')
      }
    }
  
    return bytes
  }
  
  function asciiToBytes (str) {
    var byteArray = []
    for (var i = 0; i < str.length; ++i) {
      // Node's code seems to be doing this and not & 0x7F..
      byteArray.push(str.charCodeAt(i) & 0xFF)
    }
    return byteArray
  }
  
  function utf16leToBytes (str, units) {
    var c, hi, lo
    var byteArray = []
    for (var i = 0; i < str.length; ++i) {
      if ((units -= 2) < 0) break
  
      c = str.charCodeAt(i)
      hi = c >> 8
      lo = c % 256
      byteArray.push(lo)
      byteArray.push(hi)
    }
  
    return byteArray
  }
  
  function base64ToBytes (str) {
    return base64.toByteArray(base64clean(str))
  }
  
  function blitBuffer (src, dst, offset, length) {
    for (var i = 0; i < length; ++i) {
      if ((i + offset >= dst.length) || (i >= src.length)) break
      dst[i + offset] = src[i]
    }
    return i
  }
  
  // ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass
  // the `instanceof` check but they should be treated as of that type.
  // See: https://github.com/feross/buffer/issues/166
  function isInstance (obj, type) {
    return obj instanceof type ||
      (obj != null && obj.constructor != null && obj.constructor.name != null &&
        obj.constructor.name === type.name)
  }
  function numberIsNaN (obj) {
    // For IE11 support
    return obj !== obj // eslint-disable-line no-self-compare
  }
  
  }).call(this)}).call(this,require("buffer").Buffer)
  },{"base64-js":5,"buffer":8,"ieee754":96}],9:[function(require,module,exports){
  // Copyright Joyent, Inc. and other Node contributors.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a
  // copy of this software and associated documentation files (the
  // "Software"), to deal in the Software without restriction, including
  // without limitation the rights to use, copy, modify, merge, publish,
  // distribute, sublicense, and/or sell copies of the Software, and to permit
  // persons to whom the Software is furnished to do so, subject to the
  // following conditions:
  //
  // The above copyright notice and this permission notice shall be included
  // in all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
  // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  // USE OR OTHER DEALINGS IN THE SOFTWARE.
  
  'use strict';
  
  var R = typeof Reflect === 'object' ? Reflect : null
  var ReflectApply = R && typeof R.apply === 'function'
    ? R.apply
    : function ReflectApply(target, receiver, args) {
      return Function.prototype.apply.call(target, receiver, args);
    }
  
  var ReflectOwnKeys
  if (R && typeof R.ownKeys === 'function') {
    ReflectOwnKeys = R.ownKeys
  } else if (Object.getOwnPropertySymbols) {
    ReflectOwnKeys = function ReflectOwnKeys(target) {
      return Object.getOwnPropertyNames(target)
        .concat(Object.getOwnPropertySymbols(target));
    };
  } else {
    ReflectOwnKeys = function ReflectOwnKeys(target) {
      return Object.getOwnPropertyNames(target);
    };
  }
  
  function ProcessEmitWarning(warning) {
    if (console && console.warn) console.warn(warning);
  }
  
  var NumberIsNaN = Number.isNaN || function NumberIsNaN(value) {
    return value !== value;
  }
  
  function EventEmitter() {
    EventEmitter.init.call(this);
  }
  module.exports = EventEmitter;
  module.exports.once = once;
  
  // Backwards-compat with node 0.10.x
  EventEmitter.EventEmitter = EventEmitter;
  
  EventEmitter.prototype._events = undefined;
  EventEmitter.prototype._eventsCount = 0;
  EventEmitter.prototype._maxListeners = undefined;
  
  // By default EventEmitters will print a warning if more than 10 listeners are
  // added to it. This is a useful default which helps finding memory leaks.
  var defaultMaxListeners = 10;
  
  function checkListener(listener) {
    if (typeof listener !== 'function') {
      throw new TypeError('The "listener" argument must be of type Function. Received type ' + typeof listener);
    }
  }
  
  Object.defineProperty(EventEmitter, 'defaultMaxListeners', {
    enumerable: true,
    get: function() {
      return defaultMaxListeners;
    },
    set: function(arg) {
      if (typeof arg !== 'number' || arg < 0 || NumberIsNaN(arg)) {
        throw new RangeError('The value of "defaultMaxListeners" is out of range. It must be a non-negative number. Received ' + arg + '.');
      }
      defaultMaxListeners = arg;
    }
  });
  
  EventEmitter.init = function() {
  
    if (this._events === undefined ||
        this._events === Object.getPrototypeOf(this)._events) {
      this._events = Object.create(null);
      this._eventsCount = 0;
    }
  
    this._maxListeners = this._maxListeners || undefined;
  };
  
  // Obviously not all Emitters should be limited to 10. This function allows
  // that to be increased. Set to zero for unlimited.
  EventEmitter.prototype.setMaxListeners = function setMaxListeners(n) {
    if (typeof n !== 'number' || n < 0 || NumberIsNaN(n)) {
      throw new RangeError('The value of "n" is out of range. It must be a non-negative number. Received ' + n + '.');
    }
    this._maxListeners = n;
    return this;
  };
  
  function _getMaxListeners(that) {
    if (that._maxListeners === undefined)
      return EventEmitter.defaultMaxListeners;
    return that._maxListeners;
  }
  
  EventEmitter.prototype.getMaxListeners = function getMaxListeners() {
    return _getMaxListeners(this);
  };
  
  EventEmitter.prototype.emit = function emit(type) {
    var args = [];
    for (var i = 1; i < arguments.length; i++) args.push(arguments[i]);
    var doError = (type === 'error');
  
    var events = this._events;
    if (events !== undefined)
      doError = (doError && events.error === undefined);
    else if (!doError)
      return false;
  
    // If there is no 'error' event listener then throw.
    if (doError) {
      var er;
      if (args.length > 0)
        er = args[0];
      if (er instanceof Error) {
        // Note: The comments on the `throw` lines are intentional, they show
        // up in Node's output if this results in an unhandled exception.
        throw er; // Unhandled 'error' event
      }
      // At least give some kind of context to the user
      var err = new Error('Unhandled error.' + (er ? ' (' + er.message + ')' : ''));
      err.context = er;
      throw err; // Unhandled 'error' event
    }
  
    var handler = events[type];
  
    if (handler === undefined)
      return false;
  
    if (typeof handler === 'function') {
      ReflectApply(handler, this, args);
    } else {
      var len = handler.length;
      var listeners = arrayClone(handler, len);
      for (var i = 0; i < len; ++i)
        ReflectApply(listeners[i], this, args);
    }
  
    return true;
  };
  
  function _addListener(target, type, listener, prepend) {
    var m;
    var events;
    var existing;
  
    checkListener(listener);
  
    events = target._events;
    if (events === undefined) {
      events = target._events = Object.create(null);
      target._eventsCount = 0;
    } else {
      // To avoid recursion in the case that type === "newListener"! Before
      // adding it to the listeners, first emit "newListener".
      if (events.newListener !== undefined) {
        target.emit('newListener', type,
                    listener.listener ? listener.listener : listener);
  
        // Re-assign `events` because a newListener handler could have caused the
        // this._events to be assigned to a new object
        events = target._events;
      }
      existing = events[type];
    }
  
    if (existing === undefined) {
      // Optimize the case of one listener. Don't need the extra array object.
      existing = events[type] = listener;
      ++target._eventsCount;
    } else {
      if (typeof existing === 'function') {
        // Adding the second element, need to change to array.
        existing = events[type] =
          prepend ? [listener, existing] : [existing, listener];
        // If we've already got an array, just append.
      } else if (prepend) {
        existing.unshift(listener);
      } else {
        existing.push(listener);
      }
  
      // Check for listener leak
      m = _getMaxListeners(target);
      if (m > 0 && existing.length > m && !existing.warned) {
        existing.warned = true;
        // No error code for this since it is a Warning
        // eslint-disable-next-line no-restricted-syntax
        var w = new Error('Possible EventEmitter memory leak detected. ' +
                            existing.length + ' ' + String(type) + ' listeners ' +
                            'added. Use emitter.setMaxListeners() to ' +
                            'increase limit');
        w.name = 'MaxListenersExceededWarning';
        w.emitter = target;
        w.type = type;
        w.count = existing.length;
        ProcessEmitWarning(w);
      }
    }
  
    return target;
  }
  
  EventEmitter.prototype.addListener = function addListener(type, listener) {
    return _addListener(this, type, listener, false);
  };
  
  EventEmitter.prototype.on = EventEmitter.prototype.addListener;
  
  EventEmitter.prototype.prependListener =
      function prependListener(type, listener) {
        return _addListener(this, type, listener, true);
      };
  
  function onceWrapper() {
    if (!this.fired) {
      this.target.removeListener(this.type, this.wrapFn);
      this.fired = true;
      if (arguments.length === 0)
        return this.listener.call(this.target);
      return this.listener.apply(this.target, arguments);
    }
  }
  
  function _onceWrap(target, type, listener) {
    var state = { fired: false, wrapFn: undefined, target: target, type: type, listener: listener };
    var wrapped = onceWrapper.bind(state);
    wrapped.listener = listener;
    state.wrapFn = wrapped;
    return wrapped;
  }
  
  EventEmitter.prototype.once = function once(type, listener) {
    checkListener(listener);
    this.on(type, _onceWrap(this, type, listener));
    return this;
  };
  
  EventEmitter.prototype.prependOnceListener =
      function prependOnceListener(type, listener) {
        checkListener(listener);
        this.prependListener(type, _onceWrap(this, type, listener));
        return this;
      };
  
  // Emits a 'removeListener' event if and only if the listener was removed.
  EventEmitter.prototype.removeListener =
      function removeListener(type, listener) {
        var list, events, position, i, originalListener;
  
        checkListener(listener);
  
        events = this._events;
        if (events === undefined)
          return this;
  
        list = events[type];
        if (list === undefined)
          return this;
  
        if (list === listener || list.listener === listener) {
          if (--this._eventsCount === 0)
            this._events = Object.create(null);
          else {
            delete events[type];
            if (events.removeListener)
              this.emit('removeListener', type, list.listener || listener);
          }
        } else if (typeof list !== 'function') {
          position = -1;
  
          for (i = list.length - 1; i >= 0; i--) {
            if (list[i] === listener || list[i].listener === listener) {
              originalListener = list[i].listener;
              position = i;
              break;
            }
          }
  
          if (position < 0)
            return this;
  
          if (position === 0)
            list.shift();
          else {
            spliceOne(list, position);
          }
  
          if (list.length === 1)
            events[type] = list[0];
  
          if (events.removeListener !== undefined)
            this.emit('removeListener', type, originalListener || listener);
        }
  
        return this;
      };
  
  EventEmitter.prototype.off = EventEmitter.prototype.removeListener;
  
  EventEmitter.prototype.removeAllListeners =
      function removeAllListeners(type) {
        var listeners, events, i;
  
        events = this._events;
        if (events === undefined)
          return this;
  
        // not listening for removeListener, no need to emit
        if (events.removeListener === undefined) {
          if (arguments.length === 0) {
            this._events = Object.create(null);
            this._eventsCount = 0;
          } else if (events[type] !== undefined) {
            if (--this._eventsCount === 0)
              this._events = Object.create(null);
            else
              delete events[type];
          }
          return this;
        }
  
        // emit removeListener for all listeners on all events
        if (arguments.length === 0) {
          var keys = Object.keys(events);
          var key;
          for (i = 0; i < keys.length; ++i) {
            key = keys[i];
            if (key === 'removeListener') continue;
            this.removeAllListeners(key);
          }
          this.removeAllListeners('removeListener');
          this._events = Object.create(null);
          this._eventsCount = 0;
          return this;
        }
  
        listeners = events[type];
  
        if (typeof listeners === 'function') {
          this.removeListener(type, listeners);
        } else if (listeners !== undefined) {
          // LIFO order
          for (i = listeners.length - 1; i >= 0; i--) {
            this.removeListener(type, listeners[i]);
          }
        }
  
        return this;
      };
  
  function _listeners(target, type, unwrap) {
    var events = target._events;
  
    if (events === undefined)
      return [];
  
    var evlistener = events[type];
    if (evlistener === undefined)
      return [];
  
    if (typeof evlistener === 'function')
      return unwrap ? [evlistener.listener || evlistener] : [evlistener];
  
    return unwrap ?
      unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length);
  }
  
  EventEmitter.prototype.listeners = function listeners(type) {
    return _listeners(this, type, true);
  };
  
  EventEmitter.prototype.rawListeners = function rawListeners(type) {
    return _listeners(this, type, false);
  };
  
  EventEmitter.listenerCount = function(emitter, type) {
    if (typeof emitter.listenerCount === 'function') {
      return emitter.listenerCount(type);
    } else {
      return listenerCount.call(emitter, type);
    }
  };
  
  EventEmitter.prototype.listenerCount = listenerCount;
  function listenerCount(type) {
    var events = this._events;
  
    if (events !== undefined) {
      var evlistener = events[type];
  
      if (typeof evlistener === 'function') {
        return 1;
      } else if (evlistener !== undefined) {
        return evlistener.length;
      }
    }
  
    return 0;
  }
  
  EventEmitter.prototype.eventNames = function eventNames() {
    return this._eventsCount > 0 ? ReflectOwnKeys(this._events) : [];
  };
  
  function arrayClone(arr, n) {
    var copy = new Array(n);
    for (var i = 0; i < n; ++i)
      copy[i] = arr[i];
    return copy;
  }
  
  function spliceOne(list, index) {
    for (; index + 1 < list.length; index++)
      list[index] = list[index + 1];
    list.pop();
  }
  
  function unwrapListeners(arr) {
    var ret = new Array(arr.length);
    for (var i = 0; i < ret.length; ++i) {
      ret[i] = arr[i].listener || arr[i];
    }
    return ret;
  }
  
  function once(emitter, name) {
    return new Promise(function (resolve, reject) {
      function errorListener(err) {
        emitter.removeListener(name, resolver);
        reject(err);
      }
  
      function resolver() {
        if (typeof emitter.removeListener === 'function') {
          emitter.removeListener('error', errorListener);
        }
        resolve([].slice.call(arguments));
      };
  
      eventTargetAgnosticAddListener(emitter, name, resolver, { once: true });
      if (name !== 'error') {
        addErrorHandlerIfEventEmitter(emitter, errorListener, { once: true });
      }
    });
  }
  
  function addErrorHandlerIfEventEmitter(emitter, handler, flags) {
    if (typeof emitter.on === 'function') {
      eventTargetAgnosticAddListener(emitter, 'error', handler, flags);
    }
  }
  
  function eventTargetAgnosticAddListener(emitter, name, listener, flags) {
    if (typeof emitter.on === 'function') {
      if (flags.once) {
        emitter.once(name, listener);
      } else {
        emitter.on(name, listener);
      }
    } else if (typeof emitter.addEventListener === 'function') {
      // EventTarget does not have `error` event semantics like Node
      // EventEmitters, we do not listen for `error` events here.
      emitter.addEventListener(name, function wrapListener(arg) {
        // IE does not have builtin `{ once: true }` support so we
        // have to do it manually.
        if (flags.once) {
          emitter.removeEventListener(name, wrapListener);
        }
        listener(arg);
      });
    } else {
      throw new TypeError('The "emitter" argument must be of type EventEmitter. Received type ' + typeof emitter);
    }
  }
  
  },{}],10:[function(require,module,exports){
  (function (process){(function (){
  // 'path' module extracted from Node.js v8.11.1 (only the posix part)
  // transplited with Babel
  
  // 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';
  
  function assertPath(path) {
    if (typeof path !== 'string') {
      throw new TypeError('Path must be a string. Received ' + JSON.stringify(path));
    }
  }
  
  // Resolves . and .. elements in a path with directory names
  function normalizeStringPosix(path, allowAboveRoot) {
    var res = '';
    var lastSegmentLength = 0;
    var lastSlash = -1;
    var dots = 0;
    var code;
    for (var i = 0; i <= path.length; ++i) {
      if (i < path.length)
        code = path.charCodeAt(i);
      else if (code === 47 /*/*/)
        break;
      else
        code = 47 /*/*/;
      if (code === 47 /*/*/) {
        if (lastSlash === i - 1 || dots === 1) {
          // NOOP
        } else if (lastSlash !== i - 1 && dots === 2) {
          if (res.length < 2 || lastSegmentLength !== 2 || res.charCodeAt(res.length - 1) !== 46 /*.*/ || res.charCodeAt(res.length - 2) !== 46 /*.*/) {
            if (res.length > 2) {
              var lastSlashIndex = res.lastIndexOf('/');
              if (lastSlashIndex !== res.length - 1) {
                if (lastSlashIndex === -1) {
                  res = '';
                  lastSegmentLength = 0;
                } else {
                  res = res.slice(0, lastSlashIndex);
                  lastSegmentLength = res.length - 1 - res.lastIndexOf('/');
                }
                lastSlash = i;
                dots = 0;
                continue;
              }
            } else if (res.length === 2 || res.length === 1) {
              res = '';
              lastSegmentLength = 0;
              lastSlash = i;
              dots = 0;
              continue;
            }
          }
          if (allowAboveRoot) {
            if (res.length > 0)
              res += '/..';
            else
              res = '..';
            lastSegmentLength = 2;
          }
        } else {
          if (res.length > 0)
            res += '/' + path.slice(lastSlash + 1, i);
          else
            res = path.slice(lastSlash + 1, i);
          lastSegmentLength = i - lastSlash - 1;
        }
        lastSlash = i;
        dots = 0;
      } else if (code === 46 /*.*/ && dots !== -1) {
        ++dots;
      } else {
        dots = -1;
      }
    }
    return res;
  }
  
  function _format(sep, pathObject) {
    var dir = pathObject.dir || pathObject.root;
    var base = pathObject.base || (pathObject.name || '') + (pathObject.ext || '');
    if (!dir) {
      return base;
    }
    if (dir === pathObject.root) {
      return dir + base;
    }
    return dir + sep + base;
  }
  
  var posix = {
    // path.resolve([from ...], to)
    resolve: function resolve() {
      var resolvedPath = '';
      var resolvedAbsolute = false;
      var cwd;
  
      for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
        var path;
        if (i >= 0)
          path = arguments[i];
        else {
          if (cwd === undefined)
            cwd = process.cwd();
          path = cwd;
        }
  
        assertPath(path);
  
        // Skip empty entries
        if (path.length === 0) {
          continue;
        }
  
        resolvedPath = path + '/' + resolvedPath;
        resolvedAbsolute = path.charCodeAt(0) === 47 /*/*/;
      }
  
      // 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 = normalizeStringPosix(resolvedPath, !resolvedAbsolute);
  
      if (resolvedAbsolute) {
        if (resolvedPath.length > 0)
          return '/' + resolvedPath;
        else
          return '/';
      } else if (resolvedPath.length > 0) {
        return resolvedPath;
      } else {
        return '.';
      }
    },
  
    normalize: function normalize(path) {
      assertPath(path);
  
      if (path.length === 0) return '.';
  
      var isAbsolute = path.charCodeAt(0) === 47 /*/*/;
      var trailingSeparator = path.charCodeAt(path.length - 1) === 47 /*/*/;
  
      // Normalize the path
      path = normalizeStringPosix(path, !isAbsolute);
  
      if (path.length === 0 && !isAbsolute) path = '.';
      if (path.length > 0 && trailingSeparator) path += '/';
  
      if (isAbsolute) return '/' + path;
      return path;
    },
  
    isAbsolute: function isAbsolute(path) {
      assertPath(path);
      return path.length > 0 && path.charCodeAt(0) === 47 /*/*/;
    },
  
    join: function join() {
      if (arguments.length === 0)
        return '.';
      var joined;
      for (var i = 0; i < arguments.length; ++i) {
        var arg = arguments[i];
        assertPath(arg);
        if (arg.length > 0) {
          if (joined === undefined)
            joined = arg;
          else
            joined += '/' + arg;
        }
      }
      if (joined === undefined)
        return '.';
      return posix.normalize(joined);
    },
  
    relative: function relative(from, to) {
      assertPath(from);
      assertPath(to);
  
      if (from === to) return '';
  
      from = posix.resolve(from);
      to = posix.resolve(to);
  
      if (from === to) return '';
  
      // Trim any leading backslashes
      var fromStart = 1;
      for (; fromStart < from.length; ++fromStart) {
        if (from.charCodeAt(fromStart) !== 47 /*/*/)
          break;
      }
      var fromEnd = from.length;
      var fromLen = fromEnd - fromStart;
  
      // Trim any leading backslashes
      var toStart = 1;
      for (; toStart < to.length; ++toStart) {
        if (to.charCodeAt(toStart) !== 47 /*/*/)
          break;
      }
      var toEnd = to.length;
      var toLen = toEnd - toStart;
  
      // Compare paths to find the longest common path from root
      var length = fromLen < toLen ? fromLen : toLen;
      var lastCommonSep = -1;
      var i = 0;
      for (; i <= length; ++i) {
        if (i === length) {
          if (toLen > length) {
            if (to.charCodeAt(toStart + i) === 47 /*/*/) {
              // We get here if `from` is the exact base path for `to`.
              // For example: from='/foo/bar'; to='/foo/bar/baz'
              return to.slice(toStart + i + 1);
            } else if (i === 0) {
              // We get here if `from` is the root
              // For example: from='/'; to='/foo'
              return to.slice(toStart + i);
            }
          } else if (fromLen > length) {
            if (from.charCodeAt(fromStart + i) === 47 /*/*/) {
              // We get here if `to` is the exact base path for `from`.
              // For example: from='/foo/bar/baz'; to='/foo/bar'
              lastCommonSep = i;
            } else if (i === 0) {
              // We get here if `to` is the root.
              // For example: from='/foo'; to='/'
              lastCommonSep = 0;
            }
          }
          break;
        }
        var fromCode = from.charCodeAt(fromStart + i);
        var toCode = to.charCodeAt(toStart + i);
        if (fromCode !== toCode)
          break;
        else if (fromCode === 47 /*/*/)
          lastCommonSep = i;
      }
  
      var out = '';
      // Generate the relative path based on the path difference between `to`
      // and `from`
      for (i = fromStart + lastCommonSep + 1; i <= fromEnd; ++i) {
        if (i === fromEnd || from.charCodeAt(i) === 47 /*/*/) {
          if (out.length === 0)
            out += '..';
          else
            out += '/..';
        }
      }
  
      // Lastly, append the rest of the destination (`to`) path that comes after
      // the common path parts
      if (out.length > 0)
        return out + to.slice(toStart + lastCommonSep);
      else {
        toStart += lastCommonSep;
        if (to.charCodeAt(toStart) === 47 /*/*/)
          ++toStart;
        return to.slice(toStart);
      }
    },
  
    _makeLong: function _makeLong(path) {
      return path;
    },
  
    dirname: function dirname(path) {
      assertPath(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 '//';
      return path.slice(0, end);
    },
  
    basename: function basename(path, ext) {
      if (ext !== undefined && typeof ext !== 'string') throw new TypeError('"ext" argument must be a string');
      assertPath(path);
  
      var start = 0;
      var end = -1;
      var matchedSlash = true;
      var i;
  
      if (ext !== undefined && ext.length > 0 && ext.length <= path.length) {
        if (ext.length === path.length && ext === path) return '';
        var extIdx = ext.length - 1;
        var firstNonSlashEnd = -1;
        for (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) {
                start = i + 1;
                break;
              }
            } else {
            if (firstNonSlashEnd === -1) {
              // We saw the first non-path separator, remember this index in case
              // we need it if the extension ends up not matching
              matchedSlash = false;
              firstNonSlashEnd = i + 1;
            }
            if (extIdx >= 0) {
              // Try to match the explicit extension
              if (code === ext.charCodeAt(extIdx)) {
                if (--extIdx === -1) {
                  // We matched the extension, so mark this as the end of our path
                  // component
                  end = i;
                }
              } else {
                // Extension does not match, so our result is the entire path
                // component
                extIdx = -1;
                end = firstNonSlashEnd;
              }
            }
          }
        }
  
        if (start === end) end = firstNonSlashEnd;else if (end === -1) end = path.length;
        return path.slice(start, end);
      } else {
        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);
      }
    },
  
    extname: function extname(path) {
      assertPath(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);
    },
  
    format: function format(pathObject) {
      if (pathObject === null || typeof pathObject !== 'object') {
        throw new TypeError('The "pathObject" argument must be of type Object. Received type ' + typeof pathObject);
      }
      return _format('/', pathObject);
    },
  
    parse: function parse(path) {
      assertPath(path);
  
      var ret = { root: '', dir: '', base: '', ext: '', name: '' };
      if (path.length === 0) return ret;
      var code = path.charCodeAt(0);
      var isAbsolute = code === 47 /*/*/;
      var start;
      if (isAbsolute) {
        ret.root = '/';
        start = 1;
      } else {
        start = 0;
      }
      var startDot = -1;
      var startPart = 0;
      var end = -1;
      var matchedSlash = true;
      var i = path.length - 1;
  
      // Track the state of characters (if any) we see before our first dot and
      // after any path separator we find
      var preDotState = 0;
  
      // Get non-dir info
      for (; i >= start; --i) {
        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) {
        if (end !== -1) {
          if (startPart === 0 && isAbsolute) ret.base = ret.name = path.slice(1, end);else ret.base = ret.name = path.slice(startPart, end);
        }
      } else {
        if (startPart === 0 && isAbsolute) {
          ret.name = path.slice(1, startDot);
          ret.base = path.slice(1, end);
        } else {
          ret.name = path.slice(startPart, startDot);
          ret.base = path.slice(startPart, end);
        }
        ret.ext = path.slice(startDot, end);
      }
  
      if (startPart > 0) ret.dir = path.slice(0, startPart - 1);else if (isAbsolute) ret.dir = '/';
  
      return ret;
    },
  
    sep: '/',
    delimiter: ':',
    win32: null,
    posix: null
  };
  
  posix.posix = posix;
  
  module.exports = posix;
  
  }).call(this)}).call(this,require('_process'))
  },{"_process":102}],11:[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.
  
  module.exports = Stream;
  
  var EE = require('events').EventEmitter;
  var inherits = require('inherits');
  
  inherits(Stream, EE);
  Stream.Readable = require('readable-stream/lib/_stream_readable.js');
  Stream.Writable = require('readable-stream/lib/_stream_writable.js');
  Stream.Duplex = require('readable-stream/lib/_stream_duplex.js');
  Stream.Transform = require('readable-stream/lib/_stream_transform.js');
  Stream.PassThrough = require('readable-stream/lib/_stream_passthrough.js');
  Stream.finished = require('readable-stream/lib/internal/streams/end-of-stream.js')
  Stream.pipeline = require('readable-stream/lib/internal/streams/pipeline.js')
  
  // Backwards-compat with node 0.4.x
  Stream.Stream = Stream;
  
  
  
  // old-style streams.  Note that the pipe method (the only relevant
  // part of this class) is overridden in the Readable class.
  
  function Stream() {
    EE.call(this);
  }
  
  Stream.prototype.pipe = function(dest, options) {
    var source = this;
  
    function ondata(chunk) {
      if (dest.writable) {
        if (false === dest.write(chunk) && source.pause) {
          source.pause();
        }
      }
    }
  
    source.on('data', ondata);
  
    function ondrain() {
      if (source.readable && source.resume) {
        source.resume();
      }
    }
  
    dest.on('drain', ondrain);
  
    // If the 'end' option is not supplied, dest.end() will be called when
    // source gets the 'end' or 'close' events.  Only dest.end() once.
    if (!dest._isStdio && (!options || options.end !== false)) {
      source.on('end', onend);
      source.on('close', onclose);
    }
  
    var didOnEnd = false;
    function onend() {
      if (didOnEnd) return;
      didOnEnd = true;
  
      dest.end();
    }
  
  
    function onclose() {
      if (didOnEnd) return;
      didOnEnd = true;
  
      if (typeof dest.destroy === 'function') dest.destroy();
    }
  
    // don't leave dangling pipes when there are errors.
    function onerror(er) {
      cleanup();
      if (EE.listenerCount(this, 'error') === 0) {
        throw er; // Unhandled stream error in pipe.
      }
    }
  
    source.on('error', onerror);
    dest.on('error', onerror);
  
    // remove all the event listeners that were added.
    function cleanup() {
      source.removeListener('data', ondata);
      dest.removeListener('drain', ondrain);
  
      source.removeListener('end', onend);
      source.removeListener('close', onclose);
  
      source.removeListener('error', onerror);
      dest.removeListener('error', onerror);
  
      source.removeListener('end', cleanup);
      source.removeListener('close', cleanup);
  
      dest.removeListener('close', cleanup);
    }
  
    source.on('end', cleanup);
    source.on('close', cleanup);
  
    dest.on('close', cleanup);
  
    dest.emit('pipe', source);
  
    // Allow for unix-like usage: A.pipe(B).pipe(C)
    return dest;
  };
  
  },{"events":9,"inherits":97,"readable-stream/lib/_stream_duplex.js":13,"readable-stream/lib/_stream_passthrough.js":14,"readable-stream/lib/_stream_readable.js":15,"readable-stream/lib/_stream_transform.js":16,"readable-stream/lib/_stream_writable.js":17,"readable-stream/lib/internal/streams/end-of-stream.js":21,"readable-stream/lib/internal/streams/pipeline.js":23}],12:[function(require,module,exports){
  'use strict';
  
  function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; subClass.__proto__ = superClass; }
  
  var codes = {};
  
  function createErrorType(code, message, Base) {
    if (!Base) {
      Base = Error;
    }
  
    function getMessage(arg1, arg2, arg3) {
      if (typeof message === 'string') {
        return message;
      } else {
        return message(arg1, arg2, arg3);
      }
    }
  
    var NodeError =
    /*#__PURE__*/
    function (_Base) {
      _inheritsLoose(NodeError, _Base);
  
      function NodeError(arg1, arg2, arg3) {
        return _Base.call(this, getMessage(arg1, arg2, arg3)) || this;
      }
  
      return NodeError;
    }(Base);
  
    NodeError.prototype.name = Base.name;
    NodeError.prototype.code = code;
    codes[code] = NodeError;
  } // https://github.com/nodejs/node/blob/v10.8.0/lib/internal/errors.js
  
  
  function oneOf(expected, thing) {
    if (Array.isArray(expected)) {
      var len = expected.length;
      expected = expected.map(function (i) {
        return String(i);
      });
  
      if (len > 2) {
        return "one of ".concat(thing, " ").concat(expected.slice(0, len - 1).join(', '), ", or ") + expected[len - 1];
      } else if (len === 2) {
        return "one of ".concat(thing, " ").concat(expected[0], " or ").concat(expected[1]);
      } else {
        return "of ".concat(thing, " ").concat(expected[0]);
      }
    } else {
      return "of ".concat(thing, " ").concat(String(expected));
    }
  } // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith
  
  
  function startsWith(str, search, pos) {
    return str.substr(!pos || pos < 0 ? 0 : +pos, search.length) === search;
  } // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/endsWith
  
  
  function endsWith(str, search, this_len) {
    if (this_len === undefined || this_len > str.length) {
      this_len = str.length;
    }
  
    return str.substring(this_len - search.length, this_len) === search;
  } // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/includes
  
  
  function includes(str, search, start) {
    if (typeof start !== 'number') {
      start = 0;
    }
  
    if (start + search.length > str.length) {
      return false;
    } else {
      return str.indexOf(search, start) !== -1;
    }
  }
  
  createErrorType('ERR_INVALID_OPT_VALUE', function (name, value) {
    return 'The value "' + value + '" is invalid for option "' + name + '"';
  }, TypeError);
  createErrorType('ERR_INVALID_ARG_TYPE', function (name, expected, actual) {
    // determiner: 'must be' or 'must not be'
    var determiner;
  
    if (typeof expected === 'string' && startsWith(expected, 'not ')) {
      determiner = 'must not be';
      expected = expected.replace(/^not /, '');
    } else {
      determiner = 'must be';
    }
  
    var msg;
  
    if (endsWith(name, ' argument')) {
      // For cases like 'first argument'
      msg = "The ".concat(name, " ").concat(determiner, " ").concat(oneOf(expected, 'type'));
    } else {
      var type = includes(name, '.') ? 'property' : 'argument';
      msg = "The \"".concat(name, "\" ").concat(type, " ").concat(determiner, " ").concat(oneOf(expected, 'type'));
    }
  
    msg += ". Received type ".concat(typeof actual);
    return msg;
  }, TypeError);
  createErrorType('ERR_STREAM_PUSH_AFTER_EOF', 'stream.push() after EOF');
  createErrorType('ERR_METHOD_NOT_IMPLEMENTED', function (name) {
    return 'The ' + name + ' method is not implemented';
  });
  createErrorType('ERR_STREAM_PREMATURE_CLOSE', 'Premature close');
  createErrorType('ERR_STREAM_DESTROYED', function (name) {
    return 'Cannot call ' + name + ' after a stream was destroyed';
  });
  createErrorType('ERR_MULTIPLE_CALLBACK', 'Callback called multiple times');
  createErrorType('ERR_STREAM_CANNOT_PIPE', 'Cannot pipe, not readable');
  createErrorType('ERR_STREAM_WRITE_AFTER_END', 'write after end');
  createErrorType('ERR_STREAM_NULL_VALUES', 'May not write null values to stream', TypeError);
  createErrorType('ERR_UNKNOWN_ENCODING', function (arg) {
    return 'Unknown encoding: ' + arg;
  }, TypeError);
  createErrorType('ERR_STREAM_UNSHIFT_AFTER_END_EVENT', 'stream.unshift() after end event');
  module.exports.codes = codes;
  
  },{}],13:[function(require,module,exports){
  (function (process){(function (){
  // Copyright Joyent, Inc. and other Node contributors.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a
  // copy of this software and associated documentation files (the
  // "Software"), to deal in the Software without restriction, including
  // without limitation the rights to use, copy, modify, merge, publish,
  // distribute, sublicense, and/or sell copies of the Software, and to permit
  // persons to whom the Software is furnished to do so, subject to the
  // following conditions:
  //
  // The above copyright notice and this permission notice shall be included
  // in all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
  // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  // USE OR OTHER DEALINGS IN THE SOFTWARE.
  // a duplex stream is just a stream that is both readable and writable.
  // Since JS doesn't have multiple prototypal inheritance, this class
  // prototypally inherits from Readable, and then parasitically from
  // Writable.
  'use strict';
  /*<replacement>*/
  
  var objectKeys = Object.keys || function (obj) {
    var keys = [];
  
    for (var key in obj) {
      keys.push(key);
    }
  
    return keys;
  };
  /*</replacement>*/
  
  
  module.exports = Duplex;
  
  var Readable = require('./_stream_readable');
  
  var Writable = require('./_stream_writable');
  
  require('inherits')(Duplex, Readable);
  
  {
    // Allow the keys array to be GC'ed.
    var keys = objectKeys(Writable.prototype);
  
    for (var v = 0; v < keys.length; v++) {
      var method = keys[v];
      if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
    }
  }
  
  function Duplex(options) {
    if (!(this instanceof Duplex)) return new Duplex(options);
    Readable.call(this, options);
    Writable.call(this, options);
    this.allowHalfOpen = true;
  
    if (options) {
      if (options.readable === false) this.readable = false;
      if (options.writable === false) this.writable = false;
  
      if (options.allowHalfOpen === false) {
        this.allowHalfOpen = false;
        this.once('end', onend);
      }
    }
  }
  
  Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', {
    // making it explicit this property is not enumerable
    // because otherwise some prototype manipulation in
    // userland will fail
    enumerable: false,
    get: function get() {
      return this._writableState.highWaterMark;
    }
  });
  Object.defineProperty(Duplex.prototype, 'writableBuffer', {
    // making it explicit this property is not enumerable
    // because otherwise some prototype manipulation in
    // userland will fail
    enumerable: false,
    get: function get() {
      return this._writableState && this._writableState.getBuffer();
    }
  });
  Object.defineProperty(Duplex.prototype, 'writableLength', {
    // making it explicit this property is not enumerable
    // because otherwise some prototype manipulation in
    // userland will fail
    enumerable: false,
    get: function get() {
      return this._writableState.length;
    }
  }); // the no-half-open enforcer
  
  function onend() {
    // If the writable side ended, then we're ok.
    if (this._writableState.ended) return; // no more data can be written.
    // But allow more writes to happen in this tick.
  
    process.nextTick(onEndNT, this);
  }
  
  function onEndNT(self) {
    self.end();
  }
  
  Object.defineProperty(Duplex.prototype, 'destroyed', {
    // making it explicit this property is not enumerable
    // because otherwise some prototype manipulation in
    // userland will fail
    enumerable: false,
    get: function get() {
      if (this._readableState === undefined || this._writableState === undefined) {
        return false;
      }
  
      return this._readableState.destroyed && this._writableState.destroyed;
    },
    set: function set(value) {
      // we ignore the value if the stream
      // has not been initialized yet
      if (this._readableState === undefined || this._writableState === undefined) {
        return;
      } // backward compatibility, the user is explicitly
      // managing destroyed
  
  
      this._readableState.destroyed = value;
      this._writableState.destroyed = value;
    }
  });
  }).call(this)}).call(this,require('_process'))
  },{"./_stream_readable":15,"./_stream_writable":17,"_process":102,"inherits":97}],14:[function(require,module,exports){
  // Copyright Joyent, Inc. and other Node contributors.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a
  // copy of this software and associated documentation files (the
  // "Software"), to deal in the Software without restriction, including
  // without limitation the rights to use, copy, modify, merge, publish,
  // distribute, sublicense, and/or sell copies of the Software, and to permit
  // persons to whom the Software is furnished to do so, subject to the
  // following conditions:
  //
  // The above copyright notice and this permission notice shall be included
  // in all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
  // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  // USE OR OTHER DEALINGS IN THE SOFTWARE.
  // a passthrough stream.
  // basically just the most minimal sort of Transform stream.
  // Every written chunk gets output as-is.
  'use strict';
  
  module.exports = PassThrough;
  
  var Transform = require('./_stream_transform');
  
  require('inherits')(PassThrough, Transform);
  
  function PassThrough(options) {
    if (!(this instanceof PassThrough)) return new PassThrough(options);
    Transform.call(this, options);
  }
  
  PassThrough.prototype._transform = function (chunk, encoding, cb) {
    cb(null, chunk);
  };
  },{"./_stream_transform":16,"inherits":97}],15:[function(require,module,exports){
  (function (process,global){(function (){
  // Copyright Joyent, Inc. and other Node contributors.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a
  // copy of this software and associated documentation files (the
  // "Software"), to deal in the Software without restriction, including
  // without limitation the rights to use, copy, modify, merge, publish,
  // distribute, sublicense, and/or sell copies of the Software, and to permit
  // persons to whom the Software is furnished to do so, subject to the
  // following conditions:
  //
  // The above copyright notice and this permission notice shall be included
  // in all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
  // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  // USE OR OTHER DEALINGS IN THE SOFTWARE.
  'use strict';
  
  module.exports = Readable;
  /*<replacement>*/
  
  var Duplex;
  /*</replacement>*/
  
  Readable.ReadableState = ReadableState;
  /*<replacement>*/
  
  var EE = require('events').EventEmitter;
  
  var EElistenerCount = function EElistenerCount(emitter, type) {
    return emitter.listeners(type).length;
  };
  /*</replacement>*/
  
  /*<replacement>*/
  
  
  var Stream = require('./internal/streams/stream');
  /*</replacement>*/
  
  
  var Buffer = require('buffer').Buffer;
  
  var OurUint8Array = global.Uint8Array || function () {};
  
  function _uint8ArrayToBuffer(chunk) {
    return Buffer.from(chunk);
  }
  
  function _isUint8Array(obj) {
    return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
  }
  /*<replacement>*/
  
  
  var debugUtil = require('util');
  
  var debug;
  
  if (debugUtil && debugUtil.debuglog) {
    debug = debugUtil.debuglog('stream');
  } else {
    debug = function debug() {};
  }
  /*</replacement>*/
  
  
  var BufferList = require('./internal/streams/buffer_list');
  
  var destroyImpl = require('./internal/streams/destroy');
  
  var _require = require('./internal/streams/state'),
      getHighWaterMark = _require.getHighWaterMark;
  
  var _require$codes = require('../errors').codes,
      ERR_INVALID_ARG_TYPE = _require$codes.ERR_INVALID_ARG_TYPE,
      ERR_STREAM_PUSH_AFTER_EOF = _require$codes.ERR_STREAM_PUSH_AFTER_EOF,
      ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED,
      ERR_STREAM_UNSHIFT_AFTER_END_EVENT = _require$codes.ERR_STREAM_UNSHIFT_AFTER_END_EVENT; // Lazy loaded to improve the startup performance.
  
  
  var StringDecoder;
  var createReadableStreamAsyncIterator;
  var from;
  
  require('inherits')(Readable, Stream);
  
  var errorOrDestroy = destroyImpl.errorOrDestroy;
  var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume'];
  
  function prependListener(emitter, event, fn) {
    // Sadly this is not cacheable as some libraries bundle their own
    // event emitter implementation with them.
    if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn); // This is a hack to make sure that our error handler is attached before any
    // userland ones.  NEVER DO THIS. This is here only because this code needs
    // to continue to work with older versions of Node.js that do not include
    // the prependListener() method. The goal is to eventually remove this hack.
  
    if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (Array.isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
  }
  
  function ReadableState(options, stream, isDuplex) {
    Duplex = Duplex || require('./_stream_duplex');
    options = options || {}; // Duplex streams are both readable and writable, but share
    // the same options object.
    // However, some cases require setting options to different
    // values for the readable and the writable sides of the duplex stream.
    // These options can be provided separately as readableXXX and writableXXX.
  
    if (typeof isDuplex !== 'boolean') isDuplex = stream instanceof Duplex; // object stream flag. Used to make read(n) ignore n and to
    // make all the buffer merging and length checks go away
  
    this.objectMode = !!options.objectMode;
    if (isDuplex) this.objectMode = this.objectMode || !!options.readableObjectMode; // the point at which it stops calling _read() to fill the buffer
    // Note: 0 is a valid value, means "don't call _read preemptively ever"
  
    this.highWaterMark = getHighWaterMark(this, options, 'readableHighWaterMark', isDuplex); // A linked list is used to store data chunks instead of an array because the
    // linked list can remove elements from the beginning faster than
    // array.shift()
  
    this.buffer = new BufferList();
    this.length = 0;
    this.pipes = null;
    this.pipesCount = 0;
    this.flowing = null;
    this.ended = false;
    this.endEmitted = false;
    this.reading = false; // a flag to be able to tell if the event 'readable'/'data' is emitted
    // immediately, or on a later tick.  We set this to true at first, because
    // any actions that shouldn't happen until "later" should generally also
    // not happen before the first read call.
  
    this.sync = true; // whenever we return null, then we set a flag to say
    // that we're awaiting a 'readable' event emission.
  
    this.needReadable = false;
    this.emittedReadable = false;
    this.readableListening = false;
    this.resumeScheduled = false;
    this.paused = true; // Should close be emitted on destroy. Defaults to true.
  
    this.emitClose = options.emitClose !== false; // Should .destroy() be called after 'end' (and potentially 'finish')
  
    this.autoDestroy = !!options.autoDestroy; // has it been destroyed
  
    this.destroyed = false; // Crypto is kind of old and crusty.  Historically, its default string
    // encoding is 'binary' so we have to make this configurable.
    // Everything else in the universe uses 'utf8', though.
  
    this.defaultEncoding = options.defaultEncoding || 'utf8'; // the number of writers that are awaiting a drain event in .pipe()s
  
    this.awaitDrain = 0; // if true, a maybeReadMore has been scheduled
  
    this.readingMore = false;
    this.decoder = null;
    this.encoding = null;
  
    if (options.encoding) {
      if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
      this.decoder = new StringDecoder(options.encoding);
      this.encoding = options.encoding;
    }
  }
  
  function Readable(options) {
    Duplex = Duplex || require('./_stream_duplex');
    if (!(this instanceof Readable)) return new Readable(options); // Checking for a Stream.Duplex instance is faster here instead of inside
    // the ReadableState constructor, at least with V8 6.5
  
    var isDuplex = this instanceof Duplex;
    this._readableState = new ReadableState(options, this, isDuplex); // legacy
  
    this.readable = true;
  
    if (options) {
      if (typeof options.read === 'function') this._read = options.read;
      if (typeof options.destroy === 'function') this._destroy = options.destroy;
    }
  
    Stream.call(this);
  }
  
  Object.defineProperty(Readable.prototype, 'destroyed', {
    // making it explicit this property is not enumerable
    // because otherwise some prototype manipulation in
    // userland will fail
    enumerable: false,
    get: function get() {
      if (this._readableState === undefined) {
        return false;
      }
  
      return this._readableState.destroyed;
    },
    set: function set(value) {
      // we ignore the value if the stream
      // has not been initialized yet
      if (!this._readableState) {
        return;
      } // backward compatibility, the user is explicitly
      // managing destroyed
  
  
      this._readableState.destroyed = value;
    }
  });
  Readable.prototype.destroy = destroyImpl.destroy;
  Readable.prototype._undestroy = destroyImpl.undestroy;
  
  Readable.prototype._destroy = function (err, cb) {
    cb(err);
  }; // Manually shove something into the read() buffer.
  // This returns true if the highWaterMark has not been hit yet,
  // similar to how Writable.write() returns true if you should
  // write() some more.
  
  
  Readable.prototype.push = function (chunk, encoding) {
    var state = this._readableState;
    var skipChunkCheck;
  
    if (!state.objectMode) {
      if (typeof chunk === 'string') {
        encoding = encoding || state.defaultEncoding;
  
        if (encoding !== state.encoding) {
          chunk = Buffer.from(chunk, encoding);
          encoding = '';
        }
  
        skipChunkCheck = true;
      }
    } else {
      skipChunkCheck = true;
    }
  
    return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);
  }; // Unshift should *always* be something directly out of read()
  
  
  Readable.prototype.unshift = function (chunk) {
    return readableAddChunk(this, chunk, null, true, false);
  };
  
  function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
    debug('readableAddChunk', chunk);
    var state = stream._readableState;
  
    if (chunk === null) {
      state.reading = false;
      onEofChunk(stream, state);
    } else {
      var er;
      if (!skipChunkCheck) er = chunkInvalid(state, chunk);
  
      if (er) {
        errorOrDestroy(stream, er);
      } else if (state.objectMode || chunk && chunk.length > 0) {
        if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) {
          chunk = _uint8ArrayToBuffer(chunk);
        }
  
        if (addToFront) {
          if (state.endEmitted) errorOrDestroy(stream, new ERR_STREAM_UNSHIFT_AFTER_END_EVENT());else addChunk(stream, state, chunk, true);
        } else if (state.ended) {
          errorOrDestroy(stream, new ERR_STREAM_PUSH_AFTER_EOF());
        } else if (state.destroyed) {
          return false;
        } else {
          state.reading = false;
  
          if (state.decoder && !encoding) {
            chunk = state.decoder.write(chunk);
            if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state);
          } else {
            addChunk(stream, state, chunk, false);
          }
        }
      } else if (!addToFront) {
        state.reading = false;
        maybeReadMore(stream, state);
      }
    } // We can push more data if we are below the highWaterMark.
    // Also, if we have no data yet, we can stand some more bytes.
    // This is to work around cases where hwm=0, such as the repl.
  
  
    return !state.ended && (state.length < state.highWaterMark || state.length === 0);
  }
  
  function addChunk(stream, state, chunk, addToFront) {
    if (state.flowing && state.length === 0 && !state.sync) {
      state.awaitDrain = 0;
      stream.emit('data', chunk);
    } else {
      // update the buffer info.
      state.length += state.objectMode ? 1 : chunk.length;
      if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);
      if (state.needReadable) emitReadable(stream);
    }
  
    maybeReadMore(stream, state);
  }
  
  function chunkInvalid(state, chunk) {
    var er;
  
    if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
      er = new ERR_INVALID_ARG_TYPE('chunk', ['string', 'Buffer', 'Uint8Array'], chunk);
    }
  
    return er;
  }
  
  Readable.prototype.isPaused = function () {
    return this._readableState.flowing === false;
  }; // backwards compatibility.
  
  
  Readable.prototype.setEncoding = function (enc) {
    if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
    var decoder = new StringDecoder(enc);
    this._readableState.decoder = decoder; // If setEncoding(null), decoder.encoding equals utf8
  
    this._readableState.encoding = this._readableState.decoder.encoding; // Iterate over current buffer to convert already stored Buffers:
  
    var p = this._readableState.buffer.head;
    var content = '';
  
    while (p !== null) {
      content += decoder.write(p.data);
      p = p.next;
    }
  
    this._readableState.buffer.clear();
  
    if (content !== '') this._readableState.buffer.push(content);
    this._readableState.length = content.length;
    return this;
  }; // Don't raise the hwm > 1GB
  
  
  var MAX_HWM = 0x40000000;
  
  function computeNewHighWaterMark(n) {
    if (n >= MAX_HWM) {
      // TODO(ronag): Throw ERR_VALUE_OUT_OF_RANGE.
      n = MAX_HWM;
    } else {
      // Get the next highest power of 2 to prevent increasing hwm excessively in
      // tiny amounts
      n--;
      n |= n >>> 1;
      n |= n >>> 2;
      n |= n >>> 4;
      n |= n >>> 8;
      n |= n >>> 16;
      n++;
    }
  
    return n;
  } // This function is designed to be inlinable, so please take care when making
  // changes to the function body.
  
  
  function howMuchToRead(n, state) {
    if (n <= 0 || state.length === 0 && state.ended) return 0;
    if (state.objectMode) return 1;
  
    if (n !== n) {
      // Only flow one buffer at a time
      if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;
    } // If we're asking for more than the current hwm, then raise the hwm.
  
  
    if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);
    if (n <= state.length) return n; // Don't have enough
  
    if (!state.ended) {
      state.needReadable = true;
      return 0;
    }
  
    return state.length;
  } // you can override either this method, or the async _read(n) below.
  
  
  Readable.prototype.read = function (n) {
    debug('read', n);
    n = parseInt(n, 10);
    var state = this._readableState;
    var nOrig = n;
    if (n !== 0) state.emittedReadable = false; // if we're doing read(0) to trigger a readable event, but we
    // already have a bunch of data in the buffer, then just trigger
    // the 'readable' event and move on.
  
    if (n === 0 && state.needReadable && ((state.highWaterMark !== 0 ? state.length >= state.highWaterMark : state.length > 0) || state.ended)) {
      debug('read: emitReadable', state.length, state.ended);
      if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);
      return null;
    }
  
    n = howMuchToRead(n, state); // if we've ended, and we're now clear, then finish it up.
  
    if (n === 0 && state.ended) {
      if (state.length === 0) endReadable(this);
      return null;
    } // All the actual chunk generation logic needs to be
    // *below* the call to _read.  The reason is that in certain
    // synthetic stream cases, such as passthrough streams, _read
    // may be a completely synchronous operation which may change
    // the state of the read buffer, providing enough data when
    // before there was *not* enough.
    //
    // So, the steps are:
    // 1. Figure out what the state of things will be after we do
    // a read from the buffer.
    //
    // 2. If that resulting state will trigger a _read, then call _read.
    // Note that this may be asynchronous, or synchronous.  Yes, it is
    // deeply ugly to write APIs this way, but that still doesn't mean
    // that the Readable class should behave improperly, as streams are
    // designed to be sync/async agnostic.
    // Take note if the _read call is sync or async (ie, if the read call
    // has returned yet), so that we know whether or not it's safe to emit
    // 'readable' etc.
    //
    // 3. Actually pull the requested chunks out of the buffer and return.
    // if we need a readable event, then we need to do some reading.
  
  
    var doRead = state.needReadable;
    debug('need readable', doRead); // if we currently have less than the highWaterMark, then also read some
  
    if (state.length === 0 || state.length - n < state.highWaterMark) {
      doRead = true;
      debug('length less than watermark', doRead);
    } // however, if we've ended, then there's no point, and if we're already
    // reading, then it's unnecessary.
  
  
    if (state.ended || state.reading) {
      doRead = false;
      debug('reading or ended', doRead);
    } else if (doRead) {
      debug('do read');
      state.reading = true;
      state.sync = true; // if the length is currently zero, then we *need* a readable event.
  
      if (state.length === 0) state.needReadable = true; // call internal read method
  
      this._read(state.highWaterMark);
  
      state.sync = false; // If _read pushed data synchronously, then `reading` will be false,
      // and we need to re-evaluate how much data we can return to the user.
  
      if (!state.reading) n = howMuchToRead(nOrig, state);
    }
  
    var ret;
    if (n > 0) ret = fromList(n, state);else ret = null;
  
    if (ret === null) {
      state.needReadable = state.length <= state.highWaterMark;
      n = 0;
    } else {
      state.length -= n;
      state.awaitDrain = 0;
    }
  
    if (state.length === 0) {
      // If we have nothing in the buffer, then we want to know
      // as soon as we *do* get something into the buffer.
      if (!state.ended) state.needReadable = true; // If we tried to read() past the EOF, then emit end on the next tick.
  
      if (nOrig !== n && state.ended) endReadable(this);
    }
  
    if (ret !== null) this.emit('data', ret);
    return ret;
  };
  
  function onEofChunk(stream, state) {
    debug('onEofChunk');
    if (state.ended) return;
  
    if (state.decoder) {
      var chunk = state.decoder.end();
  
      if (chunk && chunk.length) {
        state.buffer.push(chunk);
        state.length += state.objectMode ? 1 : chunk.length;
      }
    }
  
    state.ended = true;
  
    if (state.sync) {
      // if we are sync, wait until next tick to emit the data.
      // Otherwise we risk emitting data in the flow()
      // the readable code triggers during a read() call
      emitReadable(stream);
    } else {
      // emit 'readable' now to make sure it gets picked up.
      state.needReadable = false;
  
      if (!state.emittedReadable) {
        state.emittedReadable = true;
        emitReadable_(stream);
      }
    }
  } // Don't emit readable right away in sync mode, because this can trigger
  // another read() call => stack overflow.  This way, it might trigger
  // a nextTick recursion warning, but that's not so bad.
  
  
  function emitReadable(stream) {
    var state = stream._readableState;
    debug('emitReadable', state.needReadable, state.emittedReadable);
    state.needReadable = false;
  
    if (!state.emittedReadable) {
      debug('emitReadable', state.flowing);
      state.emittedReadable = true;
      process.nextTick(emitReadable_, stream);
    }
  }
  
  function emitReadable_(stream) {
    var state = stream._readableState;
    debug('emitReadable_', state.destroyed, state.length, state.ended);
  
    if (!state.destroyed && (state.length || state.ended)) {
      stream.emit('readable');
      state.emittedReadable = false;
    } // The stream needs another readable event if
    // 1. It is not flowing, as the flow mechanism will take
    //    care of it.
    // 2. It is not ended.
    // 3. It is below the highWaterMark, so we can schedule
    //    another readable later.
  
  
    state.needReadable = !state.flowing && !state.ended && state.length <= state.highWaterMark;
    flow(stream);
  } // at this point, the user has presumably seen the 'readable' event,
  // and called read() to consume some data.  that may have triggered
  // in turn another _read(n) call, in which case reading = true if
  // it's in progress.
  // However, if we're not ended, or reading, and the length < hwm,
  // then go ahead and try to read some more preemptively.
  
  
  function maybeReadMore(stream, state) {
    if (!state.readingMore) {
      state.readingMore = true;
      process.nextTick(maybeReadMore_, stream, state);
    }
  }
  
  function maybeReadMore_(stream, state) {
    // Attempt to read more data if we should.
    //
    // The conditions for reading more data are (one of):
    // - Not enough data buffered (state.length < state.highWaterMark). The loop
    //   is responsible for filling the buffer with enough data if such data
    //   is available. If highWaterMark is 0 and we are not in the flowing mode
    //   we should _not_ attempt to buffer any extra data. We'll get more data
    //   when the stream consumer calls read() instead.
    // - No data in the buffer, and the stream is in flowing mode. In this mode
    //   the loop below is responsible for ensuring read() is called. Failing to
    //   call read here would abort the flow and there's no other mechanism for
    //   continuing the flow if the stream consumer has just subscribed to the
    //   'data' event.
    //
    // In addition to the above conditions to keep reading data, the following
    // conditions prevent the data from being read:
    // - The stream has ended (state.ended).
    // - There is already a pending 'read' operation (state.reading). This is a
    //   case where the the stream has called the implementation defined _read()
    //   method, but they are processing the call asynchronously and have _not_
    //   called push() with new data. In this case we skip performing more
    //   read()s. The execution ends in this method again after the _read() ends
    //   up calling push() with more data.
    while (!state.reading && !state.ended && (state.length < state.highWaterMark || state.flowing && state.length === 0)) {
      var len = state.length;
      debug('maybeReadMore read 0');
      stream.read(0);
      if (len === state.length) // didn't get any data, stop spinning.
        break;
    }
  
    state.readingMore = false;
  } // abstract method.  to be overridden in specific implementation classes.
  // call cb(er, data) where data is <= n in length.
  // for virtual (non-string, non-buffer) streams, "length" is somewhat
  // arbitrary, and perhaps not very meaningful.
  
  
  Readable.prototype._read = function (n) {
    errorOrDestroy(this, new ERR_METHOD_NOT_IMPLEMENTED('_read()'));
  };
  
  Readable.prototype.pipe = function (dest, pipeOpts) {
    var src = this;
    var state = this._readableState;
  
    switch (state.pipesCount) {
      case 0:
        state.pipes = dest;
        break;
  
      case 1:
        state.pipes = [state.pipes, dest];
        break;
  
      default:
        state.pipes.push(dest);
        break;
    }
  
    state.pipesCount += 1;
    debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);
    var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;
    var endFn = doEnd ? onend : unpipe;
    if (state.endEmitted) process.nextTick(endFn);else src.once('end', endFn);
    dest.on('unpipe', onunpipe);
  
    function onunpipe(readable, unpipeInfo) {
      debug('onunpipe');
  
      if (readable === src) {
        if (unpipeInfo && unpipeInfo.hasUnpiped === false) {
          unpipeInfo.hasUnpiped = true;
          cleanup();
        }
      }
    }
  
    function onend() {
      debug('onend');
      dest.end();
    } // when the dest drains, it reduces the awaitDrain counter
    // on the source.  This would be more elegant with a .once()
    // handler in flow(), but adding and removing repeatedly is
    // too slow.
  
  
    var ondrain = pipeOnDrain(src);
    dest.on('drain', ondrain);
    var cleanedUp = false;
  
    function cleanup() {
      debug('cleanup'); // cleanup event handlers once the pipe is broken
  
      dest.removeListener('close', onclose);
      dest.removeListener('finish', onfinish);
      dest.removeListener('drain', ondrain);
      dest.removeListener('error', onerror);
      dest.removeListener('unpipe', onunpipe);
      src.removeListener('end', onend);
      src.removeListener('end', unpipe);
      src.removeListener('data', ondata);
      cleanedUp = true; // if the reader is waiting for a drain event from this
      // specific writer, then it would cause it to never start
      // flowing again.
      // So, if this is awaiting a drain, then we just call it now.
      // If we don't know, then assume that we are waiting for one.
  
      if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
    }
  
    src.on('data', ondata);
  
    function ondata(chunk) {
      debug('ondata');
      var ret = dest.write(chunk);
      debug('dest.write', ret);
  
      if (ret === false) {
        // If the user unpiped during `dest.write()`, it is possible
        // to get stuck in a permanently paused state if that write
        // also returned false.
        // => Check whether `dest` is still a piping destination.
        if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
          debug('false write response, pause', state.awaitDrain);
          state.awaitDrain++;
        }
  
        src.pause();
      }
    } // if the dest has an error, then stop piping into it.
    // however, don't suppress the throwing behavior for this.
  
  
    function onerror(er) {
      debug('onerror', er);
      unpipe();
      dest.removeListener('error', onerror);
      if (EElistenerCount(dest, 'error') === 0) errorOrDestroy(dest, er);
    } // Make sure our error handler is attached before userland ones.
  
  
    prependListener(dest, 'error', onerror); // Both close and finish should trigger unpipe, but only once.
  
    function onclose() {
      dest.removeListener('finish', onfinish);
      unpipe();
    }
  
    dest.once('close', onclose);
  
    function onfinish() {
      debug('onfinish');
      dest.removeListener('close', onclose);
      unpipe();
    }
  
    dest.once('finish', onfinish);
  
    function unpipe() {
      debug('unpipe');
      src.unpipe(dest);
    } // tell the dest that it's being piped to
  
  
    dest.emit('pipe', src); // start the flow if it hasn't been started already.
  
    if (!state.flowing) {
      debug('pipe resume');
      src.resume();
    }
  
    return dest;
  };
  
  function pipeOnDrain(src) {
    return function pipeOnDrainFunctionResult() {
      var state = src._readableState;
      debug('pipeOnDrain', state.awaitDrain);
      if (state.awaitDrain) state.awaitDrain--;
  
      if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
        state.flowing = true;
        flow(src);
      }
    };
  }
  
  Readable.prototype.unpipe = function (dest) {
    var state = this._readableState;
    var unpipeInfo = {
      hasUnpiped: false
    }; // if we're not piping anywhere, then do nothing.
  
    if (state.pipesCount === 0) return this; // just one destination.  most common case.
  
    if (state.pipesCount === 1) {
      // passed in one, but it's not the right one.
      if (dest && dest !== state.pipes) return this;
      if (!dest) dest = state.pipes; // got a match.
  
      state.pipes = null;
      state.pipesCount = 0;
      state.flowing = false;
      if (dest) dest.emit('unpipe', this, unpipeInfo);
      return this;
    } // slow case. multiple pipe destinations.
  
  
    if (!dest) {
      // remove all.
      var dests = state.pipes;
      var len = state.pipesCount;
      state.pipes = null;
      state.pipesCount = 0;
      state.flowing = false;
  
      for (var i = 0; i < len; i++) {
        dests[i].emit('unpipe', this, {
          hasUnpiped: false
        });
      }
  
      return this;
    } // try to find the right one.
  
  
    var index = indexOf(state.pipes, dest);
    if (index === -1) return this;
    state.pipes.splice(index, 1);
    state.pipesCount -= 1;
    if (state.pipesCount === 1) state.pipes = state.pipes[0];
    dest.emit('unpipe', this, unpipeInfo);
    return this;
  }; // set up data events if they are asked for
  // Ensure readable listeners eventually get something
  
  
  Readable.prototype.on = function (ev, fn) {
    var res = Stream.prototype.on.call(this, ev, fn);
    var state = this._readableState;
  
    if (ev === 'data') {
      // update readableListening so that resume() may be a no-op
      // a few lines down. This is needed to support once('readable').
      state.readableListening = this.listenerCount('readable') > 0; // Try start flowing on next tick if stream isn't explicitly paused
  
      if (state.flowing !== false) this.resume();
    } else if (ev === 'readable') {
      if (!state.endEmitted && !state.readableListening) {
        state.readableListening = state.needReadable = true;
        state.flowing = false;
        state.emittedReadable = false;
        debug('on readable', state.length, state.reading);
  
        if (state.length) {
          emitReadable(this);
        } else if (!state.reading) {
          process.nextTick(nReadingNextTick, this);
        }
      }
    }
  
    return res;
  };
  
  Readable.prototype.addListener = Readable.prototype.on;
  
  Readable.prototype.removeListener = function (ev, fn) {
    var res = Stream.prototype.removeListener.call(this, ev, fn);
  
    if (ev === 'readable') {
      // We need to check if there is someone still listening to
      // readable and reset the state. However this needs to happen
      // after readable has been emitted but before I/O (nextTick) to
      // support once('readable', fn) cycles. This means that calling
      // resume within the same tick will have no
      // effect.
      process.nextTick(updateReadableListening, this);
    }
  
    return res;
  };
  
  Readable.prototype.removeAllListeners = function (ev) {
    var res = Stream.prototype.removeAllListeners.apply(this, arguments);
  
    if (ev === 'readable' || ev === undefined) {
      // We need to check if there is someone still listening to
      // readable and reset the state. However this needs to happen
      // after readable has been emitted but before I/O (nextTick) to
      // support once('readable', fn) cycles. This means that calling
      // resume within the same tick will have no
      // effect.
      process.nextTick(updateReadableListening, this);
    }
  
    return res;
  };
  
  function updateReadableListening(self) {
    var state = self._readableState;
    state.readableListening = self.listenerCount('readable') > 0;
  
    if (state.resumeScheduled && !state.paused) {
      // flowing needs to be set to true now, otherwise
      // the upcoming resume will not flow.
      state.flowing = true; // crude way to check if we should resume
    } else if (self.listenerCount('data') > 0) {
      self.resume();
    }
  }
  
  function nReadingNextTick(self) {
    debug('readable nexttick read 0');
    self.read(0);
  } // pause() and resume() are remnants of the legacy readable stream API
  // If the user uses them, then switch into old mode.
  
  
  Readable.prototype.resume = function () {
    var state = this._readableState;
  
    if (!state.flowing) {
      debug('resume'); // we flow only if there is no one listening
      // for readable, but we still have to call
      // resume()
  
      state.flowing = !state.readableListening;
      resume(this, state);
    }
  
    state.paused = false;
    return this;
  };
  
  function resume(stream, state) {
    if (!state.resumeScheduled) {
      state.resumeScheduled = true;
      process.nextTick(resume_, stream, state);
    }
  }
  
  function resume_(stream, state) {
    debug('resume', state.reading);
  
    if (!state.reading) {
      stream.read(0);
    }
  
    state.resumeScheduled = false;
    stream.emit('resume');
    flow(stream);
    if (state.flowing && !state.reading) stream.read(0);
  }
  
  Readable.prototype.pause = function () {
    debug('call pause flowing=%j', this._readableState.flowing);
  
    if (this._readableState.flowing !== false) {
      debug('pause');
      this._readableState.flowing = false;
      this.emit('pause');
    }
  
    this._readableState.paused = true;
    return this;
  };
  
  function flow(stream) {
    var state = stream._readableState;
    debug('flow', state.flowing);
  
    while (state.flowing && stream.read() !== null) {
      ;
    }
  } // wrap an old-style stream as the async data source.
  // This is *not* part of the readable stream interface.
  // It is an ugly unfortunate mess of history.
  
  
  Readable.prototype.wrap = function (stream) {
    var _this = this;
  
    var state = this._readableState;
    var paused = false;
    stream.on('end', function () {
      debug('wrapped end');
  
      if (state.decoder && !state.ended) {
        var chunk = state.decoder.end();
        if (chunk && chunk.length) _this.push(chunk);
      }
  
      _this.push(null);
    });
    stream.on('data', function (chunk) {
      debug('wrapped data');
      if (state.decoder) chunk = state.decoder.write(chunk); // don't skip over falsy values in objectMode
  
      if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;
  
      var ret = _this.push(chunk);
  
      if (!ret) {
        paused = true;
        stream.pause();
      }
    }); // proxy all the other methods.
    // important when wrapping filters and duplexes.
  
    for (var i in stream) {
      if (this[i] === undefined && typeof stream[i] === 'function') {
        this[i] = function methodWrap(method) {
          return function methodWrapReturnFunction() {
            return stream[method].apply(stream, arguments);
          };
        }(i);
      }
    } // proxy certain important events.
  
  
    for (var n = 0; n < kProxyEvents.length; n++) {
      stream.on(kProxyEvents[n], this.emit.bind(this, kProxyEvents[n]));
    } // when we try to consume some more bytes, simply unpause the
    // underlying stream.
  
  
    this._read = function (n) {
      debug('wrapped _read', n);
  
      if (paused) {
        paused = false;
        stream.resume();
      }
    };
  
    return this;
  };
  
  if (typeof Symbol === 'function') {
    Readable.prototype[Symbol.asyncIterator] = function () {
      if (createReadableStreamAsyncIterator === undefined) {
        createReadableStreamAsyncIterator = require('./internal/streams/async_iterator');
      }
  
      return createReadableStreamAsyncIterator(this);
    };
  }
  
  Object.defineProperty(Readable.prototype, 'readableHighWaterMark', {
    // making it explicit this property is not enumerable
    // because otherwise some prototype manipulation in
    // userland will fail
    enumerable: false,
    get: function get() {
      return this._readableState.highWaterMark;
    }
  });
  Object.defineProperty(Readable.prototype, 'readableBuffer', {
    // making it explicit this property is not enumerable
    // because otherwise some prototype manipulation in
    // userland will fail
    enumerable: false,
    get: function get() {
      return this._readableState && this._readableState.buffer;
    }
  });
  Object.defineProperty(Readable.prototype, 'readableFlowing', {
    // making it explicit this property is not enumerable
    // because otherwise some prototype manipulation in
    // userland will fail
    enumerable: false,
    get: function get() {
      return this._readableState.flowing;
    },
    set: function set(state) {
      if (this._readableState) {
        this._readableState.flowing = state;
      }
    }
  }); // exposed for testing purposes only.
  
  Readable._fromList = fromList;
  Object.defineProperty(Readable.prototype, 'readableLength', {
    // making it explicit this property is not enumerable
    // because otherwise some prototype manipulation in
    // userland will fail
    enumerable: false,
    get: function get() {
      return this._readableState.length;
    }
  }); // Pluck off n bytes from an array of buffers.
  // Length is the combined lengths of all the buffers in the list.
  // This function is designed to be inlinable, so please take care when making
  // changes to the function body.
  
  function fromList(n, state) {
    // nothing buffered
    if (state.length === 0) return null;
    var ret;
    if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
      // read it all, truncate the list
      if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.first();else ret = state.buffer.concat(state.length);
      state.buffer.clear();
    } else {
      // read part of list
      ret = state.buffer.consume(n, state.decoder);
    }
    return ret;
  }
  
  function endReadable(stream) {
    var state = stream._readableState;
    debug('endReadable', state.endEmitted);
  
    if (!state.endEmitted) {
      state.ended = true;
      process.nextTick(endReadableNT, state, stream);
    }
  }
  
  function endReadableNT(state, stream) {
    debug('endReadableNT', state.endEmitted, state.length); // Check that we didn't get one last unshift.
  
    if (!state.endEmitted && state.length === 0) {
      state.endEmitted = true;
      stream.readable = false;
      stream.emit('end');
  
      if (state.autoDestroy) {
        // In case of duplex streams we need a way to detect
        // if the writable side is ready for autoDestroy as well
        var wState = stream._writableState;
  
        if (!wState || wState.autoDestroy && wState.finished) {
          stream.destroy();
        }
      }
    }
  }
  
  if (typeof Symbol === 'function') {
    Readable.from = function (iterable, opts) {
      if (from === undefined) {
        from = require('./internal/streams/from');
      }
  
      return from(Readable, iterable, opts);
    };
  }
  
  function indexOf(xs, x) {
    for (var i = 0, l = xs.length; i < l; i++) {
      if (xs[i] === x) return i;
    }
  
    return -1;
  }
  }).call(this)}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{"../errors":12,"./_stream_duplex":13,"./internal/streams/async_iterator":18,"./internal/streams/buffer_list":19,"./internal/streams/destroy":20,"./internal/streams/from":22,"./internal/streams/state":24,"./internal/streams/stream":25,"_process":102,"buffer":8,"events":9,"inherits":97,"string_decoder/":109,"util":6}],16:[function(require,module,exports){
  // Copyright Joyent, Inc. and other Node contributors.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a
  // copy of this software and associated documentation files (the
  // "Software"), to deal in the Software without restriction, including
  // without limitation the rights to use, copy, modify, merge, publish,
  // distribute, sublicense, and/or sell copies of the Software, and to permit
  // persons to whom the Software is furnished to do so, subject to the
  // following conditions:
  //
  // The above copyright notice and this permission notice shall be included
  // in all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
  // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  // USE OR OTHER DEALINGS IN THE SOFTWARE.
  // a transform stream is a readable/writable stream where you do
  // something with the data.  Sometimes it's called a "filter",
  // but that's not a great name for it, since that implies a thing where
  // some bits pass through, and others are simply ignored.  (That would
  // be a valid example of a transform, of course.)
  //
  // While the output is causally related to the input, it's not a
  // necessarily symmetric or synchronous transformation.  For example,
  // a zlib stream might take multiple plain-text writes(), and then
  // emit a single compressed chunk some time in the future.
  //
  // Here's how this works:
  //
  // The Transform stream has all the aspects of the readable and writable
  // stream classes.  When you write(chunk), that calls _write(chunk,cb)
  // internally, and returns false if there's a lot of pending writes
  // buffered up.  When you call read(), that calls _read(n) until
  // there's enough pending readable data buffered up.
  //
  // In a transform stream, the written data is placed in a buffer.  When
  // _read(n) is called, it transforms the queued up data, calling the
  // buffered _write cb's as it consumes chunks.  If consuming a single
  // written chunk would result in multiple output chunks, then the first
  // outputted bit calls the readcb, and subsequent chunks just go into
  // the read buffer, and will cause it to emit 'readable' if necessary.
  //
  // This way, back-pressure is actually determined by the reading side,
  // since _read has to be called to start processing a new chunk.  However,
  // a pathological inflate type of transform can cause excessive buffering
  // here.  For example, imagine a stream where every byte of input is
  // interpreted as an integer from 0-255, and then results in that many
  // bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in
  // 1kb of data being output.  In this case, you could write a very small
  // amount of input, and end up with a very large amount of output.  In
  // such a pathological inflating mechanism, there'd be no way to tell
  // the system to stop doing the transform.  A single 4MB write could
  // cause the system to run out of memory.
  //
  // However, even in such a pathological case, only a single written chunk
  // would be consumed, and then the rest would wait (un-transformed) until
  // the results of the previous transformed chunk were consumed.
  'use strict';
  
  module.exports = Transform;
  
  var _require$codes = require('../errors').codes,
      ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED,
      ERR_MULTIPLE_CALLBACK = _require$codes.ERR_MULTIPLE_CALLBACK,
      ERR_TRANSFORM_ALREADY_TRANSFORMING = _require$codes.ERR_TRANSFORM_ALREADY_TRANSFORMING,
      ERR_TRANSFORM_WITH_LENGTH_0 = _require$codes.ERR_TRANSFORM_WITH_LENGTH_0;
  
  var Duplex = require('./_stream_duplex');
  
  require('inherits')(Transform, Duplex);
  
  function afterTransform(er, data) {
    var ts = this._transformState;
    ts.transforming = false;
    var cb = ts.writecb;
  
    if (cb === null) {
      return this.emit('error', new ERR_MULTIPLE_CALLBACK());
    }
  
    ts.writechunk = null;
    ts.writecb = null;
    if (data != null) // single equals check for both `null` and `undefined`
      this.push(data);
    cb(er);
    var rs = this._readableState;
    rs.reading = false;
  
    if (rs.needReadable || rs.length < rs.highWaterMark) {
      this._read(rs.highWaterMark);
    }
  }
  
  function Transform(options) {
    if (!(this instanceof Transform)) return new Transform(options);
    Duplex.call(this, options);
    this._transformState = {
      afterTransform: afterTransform.bind(this),
      needTransform: false,
      transforming: false,
      writecb: null,
      writechunk: null,
      writeencoding: null
    }; // start out asking for a readable event once data is transformed.
  
    this._readableState.needReadable = true; // we have implemented the _read method, and done the other things
    // that Readable wants before the first _read call, so unset the
    // sync guard flag.
  
    this._readableState.sync = false;
  
    if (options) {
      if (typeof options.transform === 'function') this._transform = options.transform;
      if (typeof options.flush === 'function') this._flush = options.flush;
    } // When the writable side finishes, then flush out anything remaining.
  
  
    this.on('prefinish', prefinish);
  }
  
  function prefinish() {
    var _this = this;
  
    if (typeof this._flush === 'function' && !this._readableState.destroyed) {
      this._flush(function (er, data) {
        done(_this, er, data);
      });
    } else {
      done(this, null, null);
    }
  }
  
  Transform.prototype.push = function (chunk, encoding) {
    this._transformState.needTransform = false;
    return Duplex.prototype.push.call(this, chunk, encoding);
  }; // This is the part where you do stuff!
  // override this function in implementation classes.
  // 'chunk' is an input chunk.
  //
  // Call `push(newChunk)` to pass along transformed output
  // to the readable side.  You may call 'push' zero or more times.
  //
  // Call `cb(err)` when you are done with this chunk.  If you pass
  // an error, then that'll put the hurt on the whole operation.  If you
  // never call cb(), then you'll never get another chunk.
  
  
  Transform.prototype._transform = function (chunk, encoding, cb) {
    cb(new ERR_METHOD_NOT_IMPLEMENTED('_transform()'));
  };
  
  Transform.prototype._write = function (chunk, encoding, cb) {
    var ts = this._transformState;
    ts.writecb = cb;
    ts.writechunk = chunk;
    ts.writeencoding = encoding;
  
    if (!ts.transforming) {
      var rs = this._readableState;
      if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
    }
  }; // Doesn't matter what the args are here.
  // _transform does all the work.
  // That we got here means that the readable side wants more data.
  
  
  Transform.prototype._read = function (n) {
    var ts = this._transformState;
  
    if (ts.writechunk !== null && !ts.transforming) {
      ts.transforming = true;
  
      this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
    } else {
      // mark that we need a transform, so that any data that comes in
      // will get processed, now that we've asked for it.
      ts.needTransform = true;
    }
  };
  
  Transform.prototype._destroy = function (err, cb) {
    Duplex.prototype._destroy.call(this, err, function (err2) {
      cb(err2);
    });
  };
  
  function done(stream, er, data) {
    if (er) return stream.emit('error', er);
    if (data != null) // single equals check for both `null` and `undefined`
      stream.push(data); // TODO(BridgeAR): Write a test for these two error cases
    // if there's nothing in the write buffer, then that means
    // that nothing more will ever be provided
  
    if (stream._writableState.length) throw new ERR_TRANSFORM_WITH_LENGTH_0();
    if (stream._transformState.transforming) throw new ERR_TRANSFORM_ALREADY_TRANSFORMING();
    return stream.push(null);
  }
  },{"../errors":12,"./_stream_duplex":13,"inherits":97}],17:[function(require,module,exports){
  (function (process,global){(function (){
  // Copyright Joyent, Inc. and other Node contributors.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a
  // copy of this software and associated documentation files (the
  // "Software"), to deal in the Software without restriction, including
  // without limitation the rights to use, copy, modify, merge, publish,
  // distribute, sublicense, and/or sell copies of the Software, and to permit
  // persons to whom the Software is furnished to do so, subject to the
  // following conditions:
  //
  // The above copyright notice and this permission notice shall be included
  // in all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
  // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  // USE OR OTHER DEALINGS IN THE SOFTWARE.
  // A bit simpler than readable streams.
  // Implement an async ._write(chunk, encoding, cb), and it'll handle all
  // the drain event emission and buffering.
  'use strict';
  
  module.exports = Writable;
  /* <replacement> */
  
  function WriteReq(chunk, encoding, cb) {
    this.chunk = chunk;
    this.encoding = encoding;
    this.callback = cb;
    this.next = null;
  } // It seems a linked list but it is not
  // there will be only 2 of these for each stream
  
  
  function CorkedRequest(state) {
    var _this = this;
  
    this.next = null;
    this.entry = null;
  
    this.finish = function () {
      onCorkedFinish(_this, state);
    };
  }
  /* </replacement> */
  
  /*<replacement>*/
  
  
  var Duplex;
  /*</replacement>*/
  
  Writable.WritableState = WritableState;
  /*<replacement>*/
  
  var internalUtil = {
    deprecate: require('util-deprecate')
  };
  /*</replacement>*/
  
  /*<replacement>*/
  
  var Stream = require('./internal/streams/stream');
  /*</replacement>*/
  
  
  var Buffer = require('buffer').Buffer;
  
  var OurUint8Array = global.Uint8Array || function () {};
  
  function _uint8ArrayToBuffer(chunk) {
    return Buffer.from(chunk);
  }
  
  function _isUint8Array(obj) {
    return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
  }
  
  var destroyImpl = require('./internal/streams/destroy');
  
  var _require = require('./internal/streams/state'),
      getHighWaterMark = _require.getHighWaterMark;
  
  var _require$codes = require('../errors').codes,
      ERR_INVALID_ARG_TYPE = _require$codes.ERR_INVALID_ARG_TYPE,
      ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED,
      ERR_MULTIPLE_CALLBACK = _require$codes.ERR_MULTIPLE_CALLBACK,
      ERR_STREAM_CANNOT_PIPE = _require$codes.ERR_STREAM_CANNOT_PIPE,
      ERR_STREAM_DESTROYED = _require$codes.ERR_STREAM_DESTROYED,
      ERR_STREAM_NULL_VALUES = _require$codes.ERR_STREAM_NULL_VALUES,
      ERR_STREAM_WRITE_AFTER_END = _require$codes.ERR_STREAM_WRITE_AFTER_END,
      ERR_UNKNOWN_ENCODING = _require$codes.ERR_UNKNOWN_ENCODING;
  
  var errorOrDestroy = destroyImpl.errorOrDestroy;
  
  require('inherits')(Writable, Stream);
  
  function nop() {}
  
  function WritableState(options, stream, isDuplex) {
    Duplex = Duplex || require('./_stream_duplex');
    options = options || {}; // Duplex streams are both readable and writable, but share
    // the same options object.
    // However, some cases require setting options to different
    // values for the readable and the writable sides of the duplex stream,
    // e.g. options.readableObjectMode vs. options.writableObjectMode, etc.
  
    if (typeof isDuplex !== 'boolean') isDuplex = stream instanceof Duplex; // object stream flag to indicate whether or not this stream
    // contains buffers or objects.
  
    this.objectMode = !!options.objectMode;
    if (isDuplex) this.objectMode = this.objectMode || !!options.writableObjectMode; // the point at which write() starts returning false
    // Note: 0 is a valid value, means that we always return false if
    // the entire buffer is not flushed immediately on write()
  
    this.highWaterMark = getHighWaterMark(this, options, 'writableHighWaterMark', isDuplex); // if _final has been called
  
    this.finalCalled = false; // drain event flag.
  
    this.needDrain = false; // at the start of calling end()
  
    this.ending = false; // when end() has been called, and returned
  
    this.ended = false; // when 'finish' is emitted
  
    this.finished = false; // has it been destroyed
  
    this.destroyed = false; // should we decode strings into buffers before passing to _write?
    // this is here so that some node-core streams can optimize string
    // handling at a lower level.
  
    var noDecode = options.decodeStrings === false;
    this.decodeStrings = !noDecode; // Crypto is kind of old and crusty.  Historically, its default string
    // encoding is 'binary' so we have to make this configurable.
    // Everything else in the universe uses 'utf8', though.
  
    this.defaultEncoding = options.defaultEncoding || 'utf8'; // not an actual buffer we keep track of, but a measurement
    // of how much we're waiting to get pushed to some underlying
    // socket or file.
  
    this.length = 0; // a flag to see when we're in the middle of a write.
  
    this.writing = false; // when true all writes will be buffered until .uncork() call
  
    this.corked = 0; // a flag to be able to tell if the onwrite cb is called immediately,
    // or on a later tick.  We set this to true at first, because any
    // actions that shouldn't happen until "later" should generally also
    // not happen before the first write call.
  
    this.sync = true; // a flag to know if we're processing previously buffered items, which
    // may call the _write() callback in the same tick, so that we don't
    // end up in an overlapped onwrite situation.
  
    this.bufferProcessing = false; // the callback that's passed to _write(chunk,cb)
  
    this.onwrite = function (er) {
      onwrite(stream, er);
    }; // the callback that the user supplies to write(chunk,encoding,cb)
  
  
    this.writecb = null; // the amount that is being written when _write is called.
  
    this.writelen = 0;
    this.bufferedRequest = null;
    this.lastBufferedRequest = null; // number of pending user-supplied write callbacks
    // this must be 0 before 'finish' can be emitted
  
    this.pendingcb = 0; // emit prefinish if the only thing we're waiting for is _write cbs
    // This is relevant for synchronous Transform streams
  
    this.prefinished = false; // True if the error was already emitted and should not be thrown again
  
    this.errorEmitted = false; // Should close be emitted on destroy. Defaults to true.
  
    this.emitClose = options.emitClose !== false; // Should .destroy() be called after 'finish' (and potentially 'end')
  
    this.autoDestroy = !!options.autoDestroy; // count buffered requests
  
    this.bufferedRequestCount = 0; // allocate the first CorkedRequest, there is always
    // one allocated and free to use, and we maintain at most two
  
    this.corkedRequestsFree = new CorkedRequest(this);
  }
  
  WritableState.prototype.getBuffer = function getBuffer() {
    var current = this.bufferedRequest;
    var out = [];
  
    while (current) {
      out.push(current);
      current = current.next;
    }
  
    return out;
  };
  
  (function () {
    try {
      Object.defineProperty(WritableState.prototype, 'buffer', {
        get: internalUtil.deprecate(function writableStateBufferGetter() {
          return this.getBuffer();
        }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')
      });
    } catch (_) {}
  })(); // Test _writableState for inheritance to account for Duplex streams,
  // whose prototype chain only points to Readable.
  
  
  var realHasInstance;
  
  if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {
    realHasInstance = Function.prototype[Symbol.hasInstance];
    Object.defineProperty(Writable, Symbol.hasInstance, {
      value: function value(object) {
        if (realHasInstance.call(this, object)) return true;
        if (this !== Writable) return false;
        return object && object._writableState instanceof WritableState;
      }
    });
  } else {
    realHasInstance = function realHasInstance(object) {
      return object instanceof this;
    };
  }
  
  function Writable(options) {
    Duplex = Duplex || require('./_stream_duplex'); // Writable ctor is applied to Duplexes, too.
    // `realHasInstance` is necessary because using plain `instanceof`
    // would return false, as no `_writableState` property is attached.
    // Trying to use the custom `instanceof` for Writable here will also break the
    // Node.js LazyTransform implementation, which has a non-trivial getter for
    // `_writableState` that would lead to infinite recursion.
    // Checking for a Stream.Duplex instance is faster here instead of inside
    // the WritableState constructor, at least with V8 6.5
  
    var isDuplex = this instanceof Duplex;
    if (!isDuplex && !realHasInstance.call(Writable, this)) return new Writable(options);
    this._writableState = new WritableState(options, this, isDuplex); // legacy.
  
    this.writable = true;
  
    if (options) {
      if (typeof options.write === 'function') this._write = options.write;
      if (typeof options.writev === 'function') this._writev = options.writev;
      if (typeof options.destroy === 'function') this._destroy = options.destroy;
      if (typeof options.final === 'function') this._final = options.final;
    }
  
    Stream.call(this);
  } // Otherwise people can pipe Writable streams, which is just wrong.
  
  
  Writable.prototype.pipe = function () {
    errorOrDestroy(this, new ERR_STREAM_CANNOT_PIPE());
  };
  
  function writeAfterEnd(stream, cb) {
    var er = new ERR_STREAM_WRITE_AFTER_END(); // TODO: defer error events consistently everywhere, not just the cb
  
    errorOrDestroy(stream, er);
    process.nextTick(cb, er);
  } // Checks that a user-supplied chunk is valid, especially for the particular
  // mode the stream is in. Currently this means that `null` is never accepted
  // and undefined/non-string values are only allowed in object mode.
  
  
  function validChunk(stream, state, chunk, cb) {
    var er;
  
    if (chunk === null) {
      er = new ERR_STREAM_NULL_VALUES();
    } else if (typeof chunk !== 'string' && !state.objectMode) {
      er = new ERR_INVALID_ARG_TYPE('chunk', ['string', 'Buffer'], chunk);
    }
  
    if (er) {
      errorOrDestroy(stream, er);
      process.nextTick(cb, er);
      return false;
    }
  
    return true;
  }
  
  Writable.prototype.write = function (chunk, encoding, cb) {
    var state = this._writableState;
    var ret = false;
  
    var isBuf = !state.objectMode && _isUint8Array(chunk);
  
    if (isBuf && !Buffer.isBuffer(chunk)) {
      chunk = _uint8ArrayToBuffer(chunk);
    }
  
    if (typeof encoding === 'function') {
      cb = encoding;
      encoding = null;
    }
  
    if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;
    if (typeof cb !== 'function') cb = nop;
    if (state.ending) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {
      state.pendingcb++;
      ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);
    }
    return ret;
  };
  
  Writable.prototype.cork = function () {
    this._writableState.corked++;
  };
  
  Writable.prototype.uncork = function () {
    var state = this._writableState;
  
    if (state.corked) {
      state.corked--;
      if (!state.writing && !state.corked && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
    }
  };
  
  Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
    // node::ParseEncoding() requires lower case.
    if (typeof encoding === 'string') encoding = encoding.toLowerCase();
    if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new ERR_UNKNOWN_ENCODING(encoding);
    this._writableState.defaultEncoding = encoding;
    return this;
  };
  
  Object.defineProperty(Writable.prototype, 'writableBuffer', {
    // making it explicit this property is not enumerable
    // because otherwise some prototype manipulation in
    // userland will fail
    enumerable: false,
    get: function get() {
      return this._writableState && this._writableState.getBuffer();
    }
  });
  
  function decodeChunk(state, chunk, encoding) {
    if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
      chunk = Buffer.from(chunk, encoding);
    }
  
    return chunk;
  }
  
  Object.defineProperty(Writable.prototype, 'writableHighWaterMark', {
    // making it explicit this property is not enumerable
    // because otherwise some prototype manipulation in
    // userland will fail
    enumerable: false,
    get: function get() {
      return this._writableState.highWaterMark;
    }
  }); // if we're already writing something, then just put this
  // in the queue, and wait our turn.  Otherwise, call _write
  // If we return false, then we need a drain event, so set that flag.
  
  function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {
    if (!isBuf) {
      var newChunk = decodeChunk(state, chunk, encoding);
  
      if (chunk !== newChunk) {
        isBuf = true;
        encoding = 'buffer';
        chunk = newChunk;
      }
    }
  
    var len = state.objectMode ? 1 : chunk.length;
    state.length += len;
    var ret = state.length < state.highWaterMark; // we must ensure that previous needDrain will not be reset to false.
  
    if (!ret) state.needDrain = true;
  
    if (state.writing || state.corked) {
      var last = state.lastBufferedRequest;
      state.lastBufferedRequest = {
        chunk: chunk,
        encoding: encoding,
        isBuf: isBuf,
        callback: cb,
        next: null
      };
  
      if (last) {
        last.next = state.lastBufferedRequest;
      } else {
        state.bufferedRequest = state.lastBufferedRequest;
      }
  
      state.bufferedRequestCount += 1;
    } else {
      doWrite(stream, state, false, len, chunk, encoding, cb);
    }
  
    return ret;
  }
  
  function doWrite(stream, state, writev, len, chunk, encoding, cb) {
    state.writelen = len;
    state.writecb = cb;
    state.writing = true;
    state.sync = true;
    if (state.destroyed) state.onwrite(new ERR_STREAM_DESTROYED('write'));else if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
    state.sync = false;
  }
  
  function onwriteError(stream, state, sync, er, cb) {
    --state.pendingcb;
  
    if (sync) {
      // defer the callback if we are being called synchronously
      // to avoid piling up things on the stack
      process.nextTick(cb, er); // this can emit finish, and it will always happen
      // after error
  
      process.nextTick(finishMaybe, stream, state);
      stream._writableState.errorEmitted = true;
      errorOrDestroy(stream, er);
    } else {
      // the caller expect this to happen before if
      // it is async
      cb(er);
      stream._writableState.errorEmitted = true;
      errorOrDestroy(stream, er); // this can emit finish, but finish must
      // always follow error
  
      finishMaybe(stream, state);
    }
  }
  
  function onwriteStateUpdate(state) {
    state.writing = false;
    state.writecb = null;
    state.length -= state.writelen;
    state.writelen = 0;
  }
  
  function onwrite(stream, er) {
    var state = stream._writableState;
    var sync = state.sync;
    var cb = state.writecb;
    if (typeof cb !== 'function') throw new ERR_MULTIPLE_CALLBACK();
    onwriteStateUpdate(state);
    if (er) onwriteError(stream, state, sync, er, cb);else {
      // Check if we're actually ready to finish, but don't emit yet
      var finished = needFinish(state) || stream.destroyed;
  
      if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
        clearBuffer(stream, state);
      }
  
      if (sync) {
        process.nextTick(afterWrite, stream, state, finished, cb);
      } else {
        afterWrite(stream, state, finished, cb);
      }
    }
  }
  
  function afterWrite(stream, state, finished, cb) {
    if (!finished) onwriteDrain(stream, state);
    state.pendingcb--;
    cb();
    finishMaybe(stream, state);
  } // Must force callback to be called on nextTick, so that we don't
  // emit 'drain' before the write() consumer gets the 'false' return
  // value, and has a chance to attach a 'drain' listener.
  
  
  function onwriteDrain(stream, state) {
    if (state.length === 0 && state.needDrain) {
      state.needDrain = false;
      stream.emit('drain');
    }
  } // if there's something in the buffer waiting, then process it
  
  
  function clearBuffer(stream, state) {
    state.bufferProcessing = true;
    var entry = state.bufferedRequest;
  
    if (stream._writev && entry && entry.next) {
      // Fast case, write everything using _writev()
      var l = state.bufferedRequestCount;
      var buffer = new Array(l);
      var holder = state.corkedRequestsFree;
      holder.entry = entry;
      var count = 0;
      var allBuffers = true;
  
      while (entry) {
        buffer[count] = entry;
        if (!entry.isBuf) allBuffers = false;
        entry = entry.next;
        count += 1;
      }
  
      buffer.allBuffers = allBuffers;
      doWrite(stream, state, true, state.length, buffer, '', holder.finish); // doWrite is almost always async, defer these to save a bit of time
      // as the hot path ends with doWrite
  
      state.pendingcb++;
      state.lastBufferedRequest = null;
  
      if (holder.next) {
        state.corkedRequestsFree = holder.next;
        holder.next = null;
      } else {
        state.corkedRequestsFree = new CorkedRequest(state);
      }
  
      state.bufferedRequestCount = 0;
    } else {
      // Slow case, write chunks one-by-one
      while (entry) {
        var chunk = entry.chunk;
        var encoding = entry.encoding;
        var cb = entry.callback;
        var len = state.objectMode ? 1 : chunk.length;
        doWrite(stream, state, false, len, chunk, encoding, cb);
        entry = entry.next;
        state.bufferedRequestCount--; // if we didn't call the onwrite immediately, then
        // it means that we need to wait until it does.
        // also, that means that the chunk and cb are currently
        // being processed, so move the buffer counter past them.
  
        if (state.writing) {
          break;
        }
      }
  
      if (entry === null) state.lastBufferedRequest = null;
    }
  
    state.bufferedRequest = entry;
    state.bufferProcessing = false;
  }
  
  Writable.prototype._write = function (chunk, encoding, cb) {
    cb(new ERR_METHOD_NOT_IMPLEMENTED('_write()'));
  };
  
  Writable.prototype._writev = null;
  
  Writable.prototype.end = function (chunk, encoding, cb) {
    var state = this._writableState;
  
    if (typeof chunk === 'function') {
      cb = chunk;
      chunk = null;
      encoding = null;
    } else if (typeof encoding === 'function') {
      cb = encoding;
      encoding = null;
    }
  
    if (chunk !== null && chunk !== undefined) this.write(chunk, encoding); // .end() fully uncorks
  
    if (state.corked) {
      state.corked = 1;
      this.uncork();
    } // ignore unnecessary end() calls.
  
  
    if (!state.ending) endWritable(this, state, cb);
    return this;
  };
  
  Object.defineProperty(Writable.prototype, 'writableLength', {
    // making it explicit this property is not enumerable
    // because otherwise some prototype manipulation in
    // userland will fail
    enumerable: false,
    get: function get() {
      return this._writableState.length;
    }
  });
  
  function needFinish(state) {
    return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
  }
  
  function callFinal(stream, state) {
    stream._final(function (err) {
      state.pendingcb--;
  
      if (err) {
        errorOrDestroy(stream, err);
      }
  
      state.prefinished = true;
      stream.emit('prefinish');
      finishMaybe(stream, state);
    });
  }
  
  function prefinish(stream, state) {
    if (!state.prefinished && !state.finalCalled) {
      if (typeof stream._final === 'function' && !state.destroyed) {
        state.pendingcb++;
        state.finalCalled = true;
        process.nextTick(callFinal, stream, state);
      } else {
        state.prefinished = true;
        stream.emit('prefinish');
      }
    }
  }
  
  function finishMaybe(stream, state) {
    var need = needFinish(state);
  
    if (need) {
      prefinish(stream, state);
  
      if (state.pendingcb === 0) {
        state.finished = true;
        stream.emit('finish');
  
        if (state.autoDestroy) {
          // In case of duplex streams we need a way to detect
          // if the readable side is ready for autoDestroy as well
          var rState = stream._readableState;
  
          if (!rState || rState.autoDestroy && rState.endEmitted) {
            stream.destroy();
          }
        }
      }
    }
  
    return need;
  }
  
  function endWritable(stream, state, cb) {
    state.ending = true;
    finishMaybe(stream, state);
  
    if (cb) {
      if (state.finished) process.nextTick(cb);else stream.once('finish', cb);
    }
  
    state.ended = true;
    stream.writable = false;
  }
  
  function onCorkedFinish(corkReq, state, err) {
    var entry = corkReq.entry;
    corkReq.entry = null;
  
    while (entry) {
      var cb = entry.callback;
      state.pendingcb--;
      cb(err);
      entry = entry.next;
    } // reuse the free corkReq.
  
  
    state.corkedRequestsFree.next = corkReq;
  }
  
  Object.defineProperty(Writable.prototype, 'destroyed', {
    // making it explicit this property is not enumerable
    // because otherwise some prototype manipulation in
    // userland will fail
    enumerable: false,
    get: function get() {
      if (this._writableState === undefined) {
        return false;
      }
  
      return this._writableState.destroyed;
    },
    set: function set(value) {
      // we ignore the value if the stream
      // has not been initialized yet
      if (!this._writableState) {
        return;
      } // backward compatibility, the user is explicitly
      // managing destroyed
  
  
      this._writableState.destroyed = value;
    }
  });
  Writable.prototype.destroy = destroyImpl.destroy;
  Writable.prototype._undestroy = destroyImpl.undestroy;
  
  Writable.prototype._destroy = function (err, cb) {
    cb(err);
  };
  }).call(this)}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{"../errors":12,"./_stream_duplex":13,"./internal/streams/destroy":20,"./internal/streams/state":24,"./internal/streams/stream":25,"_process":102,"buffer":8,"inherits":97,"util-deprecate":118}],18:[function(require,module,exports){
  (function (process){(function (){
  'use strict';
  
  var _Object$setPrototypeO;
  
  function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
  
  var finished = require('./end-of-stream');
  
  var kLastResolve = Symbol('lastResolve');
  var kLastReject = Symbol('lastReject');
  var kError = Symbol('error');
  var kEnded = Symbol('ended');
  var kLastPromise = Symbol('lastPromise');
  var kHandlePromise = Symbol('handlePromise');
  var kStream = Symbol('stream');
  
  function createIterResult(value, done) {
    return {
      value: value,
      done: done
    };
  }
  
  function readAndResolve(iter) {
    var resolve = iter[kLastResolve];
  
    if (resolve !== null) {
      var data = iter[kStream].read(); // we defer if data is null
      // we can be expecting either 'end' or
      // 'error'
  
      if (data !== null) {
        iter[kLastPromise] = null;
        iter[kLastResolve] = null;
        iter[kLastReject] = null;
        resolve(createIterResult(data, false));
      }
    }
  }
  
  function onReadable(iter) {
    // we wait for the next tick, because it might
    // emit an error with process.nextTick
    process.nextTick(readAndResolve, iter);
  }
  
  function wrapForNext(lastPromise, iter) {
    return function (resolve, reject) {
      lastPromise.then(function () {
        if (iter[kEnded]) {
          resolve(createIterResult(undefined, true));
          return;
        }
  
        iter[kHandlePromise](resolve, reject);
      }, reject);
    };
  }
  
  var AsyncIteratorPrototype = Object.getPrototypeOf(function () {});
  var ReadableStreamAsyncIteratorPrototype = Object.setPrototypeOf((_Object$setPrototypeO = {
    get stream() {
      return this[kStream];
    },
  
    next: function next() {
      var _this = this;
  
      // if we have detected an error in the meanwhile
      // reject straight away
      var error = this[kError];
  
      if (error !== null) {
        return Promise.reject(error);
      }
  
      if (this[kEnded]) {
        return Promise.resolve(createIterResult(undefined, true));
      }
  
      if (this[kStream].destroyed) {
        // We need to defer via nextTick because if .destroy(err) is
        // called, the error will be emitted via nextTick, and
        // we cannot guarantee that there is no error lingering around
        // waiting to be emitted.
        return new Promise(function (resolve, reject) {
          process.nextTick(function () {
            if (_this[kError]) {
              reject(_this[kError]);
            } else {
              resolve(createIterResult(undefined, true));
            }
          });
        });
      } // if we have multiple next() calls
      // we will wait for the previous Promise to finish
      // this logic is optimized to support for await loops,
      // where next() is only called once at a time
  
  
      var lastPromise = this[kLastPromise];
      var promise;
  
      if (lastPromise) {
        promise = new Promise(wrapForNext(lastPromise, this));
      } else {
        // fast path needed to support multiple this.push()
        // without triggering the next() queue
        var data = this[kStream].read();
  
        if (data !== null) {
          return Promise.resolve(createIterResult(data, false));
        }
  
        promise = new Promise(this[kHandlePromise]);
      }
  
      this[kLastPromise] = promise;
      return promise;
    }
  }, _defineProperty(_Object$setPrototypeO, Symbol.asyncIterator, function () {
    return this;
  }), _defineProperty(_Object$setPrototypeO, "return", function _return() {
    var _this2 = this;
  
    // destroy(err, cb) is a private API
    // we can guarantee we have that here, because we control the
    // Readable class this is attached to
    return new Promise(function (resolve, reject) {
      _this2[kStream].destroy(null, function (err) {
        if (err) {
          reject(err);
          return;
        }
  
        resolve(createIterResult(undefined, true));
      });
    });
  }), _Object$setPrototypeO), AsyncIteratorPrototype);
  
  var createReadableStreamAsyncIterator = function createReadableStreamAsyncIterator(stream) {
    var _Object$create;
  
    var iterator = Object.create(ReadableStreamAsyncIteratorPrototype, (_Object$create = {}, _defineProperty(_Object$create, kStream, {
      value: stream,
      writable: true
    }), _defineProperty(_Object$create, kLastResolve, {
      value: null,
      writable: true
    }), _defineProperty(_Object$create, kLastReject, {
      value: null,
      writable: true
    }), _defineProperty(_Object$create, kError, {
      value: null,
      writable: true
    }), _defineProperty(_Object$create, kEnded, {
      value: stream._readableState.endEmitted,
      writable: true
    }), _defineProperty(_Object$create, kHandlePromise, {
      value: function value(resolve, reject) {
        var data = iterator[kStream].read();
  
        if (data) {
          iterator[kLastPromise] = null;
          iterator[kLastResolve] = null;
          iterator[kLastReject] = null;
          resolve(createIterResult(data, false));
        } else {
          iterator[kLastResolve] = resolve;
          iterator[kLastReject] = reject;
        }
      },
      writable: true
    }), _Object$create));
    iterator[kLastPromise] = null;
    finished(stream, function (err) {
      if (err && err.code !== 'ERR_STREAM_PREMATURE_CLOSE') {
        var reject = iterator[kLastReject]; // reject if we are waiting for data in the Promise
        // returned by next() and store the error
  
        if (reject !== null) {
          iterator[kLastPromise] = null;
          iterator[kLastResolve] = null;
          iterator[kLastReject] = null;
          reject(err);
        }
  
        iterator[kError] = err;
        return;
      }
  
      var resolve = iterator[kLastResolve];
  
      if (resolve !== null) {
        iterator[kLastPromise] = null;
        iterator[kLastResolve] = null;
        iterator[kLastReject] = null;
        resolve(createIterResult(undefined, true));
      }
  
      iterator[kEnded] = true;
    });
    stream.on('readable', onReadable.bind(null, iterator));
    return iterator;
  };
  
  module.exports = createReadableStreamAsyncIterator;
  }).call(this)}).call(this,require('_process'))
  },{"./end-of-stream":21,"_process":102}],19:[function(require,module,exports){
  'use strict';
  
  function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }
  
  function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }
  
  function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
  
  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
  
  function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
  
  function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
  
  var _require = require('buffer'),
      Buffer = _require.Buffer;
  
  var _require2 = require('util'),
      inspect = _require2.inspect;
  
  var custom = inspect && inspect.custom || 'inspect';
  
  function copyBuffer(src, target, offset) {
    Buffer.prototype.copy.call(src, target, offset);
  }
  
  module.exports =
  /*#__PURE__*/
  function () {
    function BufferList() {
      _classCallCheck(this, BufferList);
  
      this.head = null;
      this.tail = null;
      this.length = 0;
    }
  
    _createClass(BufferList, [{
      key: "push",
      value: function push(v) {
        var entry = {
          data: v,
          next: null
        };
        if (this.length > 0) this.tail.next = entry;else this.head = entry;
        this.tail = entry;
        ++this.length;
      }
    }, {
      key: "unshift",
      value: function unshift(v) {
        var entry = {
          data: v,
          next: this.head
        };
        if (this.length === 0) this.tail = entry;
        this.head = entry;
        ++this.length;
      }
    }, {
      key: "shift",
      value: function shift() {
        if (this.length === 0) return;
        var ret = this.head.data;
        if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
        --this.length;
        return ret;
      }
    }, {
      key: "clear",
      value: function clear() {
        this.head = this.tail = null;
        this.length = 0;
      }
    }, {
      key: "join",
      value: function join(s) {
        if (this.length === 0) return '';
        var p = this.head;
        var ret = '' + p.data;
  
        while (p = p.next) {
          ret += s + p.data;
        }
  
        return ret;
      }
    }, {
      key: "concat",
      value: function concat(n) {
        if (this.length === 0) return Buffer.alloc(0);
        var ret = Buffer.allocUnsafe(n >>> 0);
        var p = this.head;
        var i = 0;
  
        while (p) {
          copyBuffer(p.data, ret, i);
          i += p.data.length;
          p = p.next;
        }
  
        return ret;
      } // Consumes a specified amount of bytes or characters from the buffered data.
  
    }, {
      key: "consume",
      value: function consume(n, hasStrings) {
        var ret;
  
        if (n < this.head.data.length) {
          // `slice` is the same for buffers and strings.
          ret = this.head.data.slice(0, n);
          this.head.data = this.head.data.slice(n);
        } else if (n === this.head.data.length) {
          // First chunk is a perfect match.
          ret = this.shift();
        } else {
          // Result spans more than one buffer.
          ret = hasStrings ? this._getString(n) : this._getBuffer(n);
        }
  
        return ret;
      }
    }, {
      key: "first",
      value: function first() {
        return this.head.data;
      } // Consumes a specified amount of characters from the buffered data.
  
    }, {
      key: "_getString",
      value: function _getString(n) {
        var p = this.head;
        var c = 1;
        var ret = p.data;
        n -= ret.length;
  
        while (p = p.next) {
          var str = p.data;
          var nb = n > str.length ? str.length : n;
          if (nb === str.length) ret += str;else ret += str.slice(0, n);
          n -= nb;
  
          if (n === 0) {
            if (nb === str.length) {
              ++c;
              if (p.next) this.head = p.next;else this.head = this.tail = null;
            } else {
              this.head = p;
              p.data = str.slice(nb);
            }
  
            break;
          }
  
          ++c;
        }
  
        this.length -= c;
        return ret;
      } // Consumes a specified amount of bytes from the buffered data.
  
    }, {
      key: "_getBuffer",
      value: function _getBuffer(n) {
        var ret = Buffer.allocUnsafe(n);
        var p = this.head;
        var c = 1;
        p.data.copy(ret);
        n -= p.data.length;
  
        while (p = p.next) {
          var buf = p.data;
          var nb = n > buf.length ? buf.length : n;
          buf.copy(ret, ret.length - n, 0, nb);
          n -= nb;
  
          if (n === 0) {
            if (nb === buf.length) {
              ++c;
              if (p.next) this.head = p.next;else this.head = this.tail = null;
            } else {
              this.head = p;
              p.data = buf.slice(nb);
            }
  
            break;
          }
  
          ++c;
        }
  
        this.length -= c;
        return ret;
      } // Make sure the linked list only shows the minimal necessary information.
  
    }, {
      key: custom,
      value: function value(_, options) {
        return inspect(this, _objectSpread({}, options, {
          // Only inspect one level.
          depth: 0,
          // It should not recurse.
          customInspect: false
        }));
      }
    }]);
  
    return BufferList;
  }();
  },{"buffer":8,"util":6}],20:[function(require,module,exports){
  (function (process){(function (){
  'use strict'; // undocumented cb() API, needed for core, not for public API
  
  function destroy(err, cb) {
    var _this = this;
  
    var readableDestroyed = this._readableState && this._readableState.destroyed;
    var writableDestroyed = this._writableState && this._writableState.destroyed;
  
    if (readableDestroyed || writableDestroyed) {
      if (cb) {
        cb(err);
      } else if (err) {
        if (!this._writableState) {
          process.nextTick(emitErrorNT, this, err);
        } else if (!this._writableState.errorEmitted) {
          this._writableState.errorEmitted = true;
          process.nextTick(emitErrorNT, this, err);
        }
      }
  
      return this;
    } // we set destroyed to true before firing error callbacks in order
    // to make it re-entrance safe in case destroy() is called within callbacks
  
  
    if (this._readableState) {
      this._readableState.destroyed = true;
    } // if this is a duplex stream mark the writable part as destroyed as well
  
  
    if (this._writableState) {
      this._writableState.destroyed = true;
    }
  
    this._destroy(err || null, function (err) {
      if (!cb && err) {
        if (!_this._writableState) {
          process.nextTick(emitErrorAndCloseNT, _this, err);
        } else if (!_this._writableState.errorEmitted) {
          _this._writableState.errorEmitted = true;
          process.nextTick(emitErrorAndCloseNT, _this, err);
        } else {
          process.nextTick(emitCloseNT, _this);
        }
      } else if (cb) {
        process.nextTick(emitCloseNT, _this);
        cb(err);
      } else {
        process.nextTick(emitCloseNT, _this);
      }
    });
  
    return this;
  }
  
  function emitErrorAndCloseNT(self, err) {
    emitErrorNT(self, err);
    emitCloseNT(self);
  }
  
  function emitCloseNT(self) {
    if (self._writableState && !self._writableState.emitClose) return;
    if (self._readableState && !self._readableState.emitClose) return;
    self.emit('close');
  }
  
  function undestroy() {
    if (this._readableState) {
      this._readableState.destroyed = false;
      this._readableState.reading = false;
      this._readableState.ended = false;
      this._readableState.endEmitted = false;
    }
  
    if (this._writableState) {
      this._writableState.destroyed = false;
      this._writableState.ended = false;
      this._writableState.ending = false;
      this._writableState.finalCalled = false;
      this._writableState.prefinished = false;
      this._writableState.finished = false;
      this._writableState.errorEmitted = false;
    }
  }
  
  function emitErrorNT(self, err) {
    self.emit('error', err);
  }
  
  function errorOrDestroy(stream, err) {
    // We have tests that rely on errors being emitted
    // in the same tick, so changing this is semver major.
    // For now when you opt-in to autoDestroy we allow
    // the error to be emitted nextTick. In a future
    // semver major update we should change the default to this.
    var rState = stream._readableState;
    var wState = stream._writableState;
    if (rState && rState.autoDestroy || wState && wState.autoDestroy) stream.destroy(err);else stream.emit('error', err);
  }
  
  module.exports = {
    destroy: destroy,
    undestroy: undestroy,
    errorOrDestroy: errorOrDestroy
  };
  }).call(this)}).call(this,require('_process'))
  },{"_process":102}],21:[function(require,module,exports){
  // Ported from https://github.com/mafintosh/end-of-stream with
  // permission from the author, Mathias Buus (@mafintosh).
  'use strict';
  
  var ERR_STREAM_PREMATURE_CLOSE = require('../../../errors').codes.ERR_STREAM_PREMATURE_CLOSE;
  
  function once(callback) {
    var called = false;
    return function () {
      if (called) return;
      called = true;
  
      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
        args[_key] = arguments[_key];
      }
  
      callback.apply(this, args);
    };
  }
  
  function noop() {}
  
  function isRequest(stream) {
    return stream.setHeader && typeof stream.abort === 'function';
  }
  
  function eos(stream, opts, callback) {
    if (typeof opts === 'function') return eos(stream, null, opts);
    if (!opts) opts = {};
    callback = once(callback || noop);
    var readable = opts.readable || opts.readable !== false && stream.readable;
    var writable = opts.writable || opts.writable !== false && stream.writable;
  
    var onlegacyfinish = function onlegacyfinish() {
      if (!stream.writable) onfinish();
    };
  
    var writableEnded = stream._writableState && stream._writableState.finished;
  
    var onfinish = function onfinish() {
      writable = false;
      writableEnded = true;
      if (!readable) callback.call(stream);
    };
  
    var readableEnded = stream._readableState && stream._readableState.endEmitted;
  
    var onend = function onend() {
      readable = false;
      readableEnded = true;
      if (!writable) callback.call(stream);
    };
  
    var onerror = function onerror(err) {
      callback.call(stream, err);
    };
  
    var onclose = function onclose() {
      var err;
  
      if (readable && !readableEnded) {
        if (!stream._readableState || !stream._readableState.ended) err = new ERR_STREAM_PREMATURE_CLOSE();
        return callback.call(stream, err);
      }
  
      if (writable && !writableEnded) {
        if (!stream._writableState || !stream._writableState.ended) err = new ERR_STREAM_PREMATURE_CLOSE();
        return callback.call(stream, err);
      }
    };
  
    var onrequest = function onrequest() {
      stream.req.on('finish', onfinish);
    };
  
    if (isRequest(stream)) {
      stream.on('complete', onfinish);
      stream.on('abort', onclose);
      if (stream.req) onrequest();else stream.on('request', onrequest);
    } else if (writable && !stream._writableState) {
      // legacy streams
      stream.on('end', onlegacyfinish);
      stream.on('close', onlegacyfinish);
    }
  
    stream.on('end', onend);
    stream.on('finish', onfinish);
    if (opts.error !== false) stream.on('error', onerror);
    stream.on('close', onclose);
    return function () {
      stream.removeListener('complete', onfinish);
      stream.removeListener('abort', onclose);
      stream.removeListener('request', onrequest);
      if (stream.req) stream.req.removeListener('finish', onfinish);
      stream.removeListener('end', onlegacyfinish);
      stream.removeListener('close', onlegacyfinish);
      stream.removeListener('finish', onfinish);
      stream.removeListener('end', onend);
      stream.removeListener('error', onerror);
      stream.removeListener('close', onclose);
    };
  }
  
  module.exports = eos;
  },{"../../../errors":12}],22:[function(require,module,exports){
  module.exports = function () {
    throw new Error('Readable.from is not available in the browser')
  };
  
  },{}],23:[function(require,module,exports){
  // Ported from https://github.com/mafintosh/pump with
  // permission from the author, Mathias Buus (@mafintosh).
  'use strict';
  
  var eos;
  
  function once(callback) {
    var called = false;
    return function () {
      if (called) return;
      called = true;
      callback.apply(void 0, arguments);
    };
  }
  
  var _require$codes = require('../../../errors').codes,
      ERR_MISSING_ARGS = _require$codes.ERR_MISSING_ARGS,
      ERR_STREAM_DESTROYED = _require$codes.ERR_STREAM_DESTROYED;
  
  function noop(err) {
    // Rethrow the error if it exists to avoid swallowing it
    if (err) throw err;
  }
  
  function isRequest(stream) {
    return stream.setHeader && typeof stream.abort === 'function';
  }
  
  function destroyer(stream, reading, writing, callback) {
    callback = once(callback);
    var closed = false;
    stream.on('close', function () {
      closed = true;
    });
    if (eos === undefined) eos = require('./end-of-stream');
    eos(stream, {
      readable: reading,
      writable: writing
    }, function (err) {
      if (err) return callback(err);
      closed = true;
      callback();
    });
    var destroyed = false;
    return function (err) {
      if (closed) return;
      if (destroyed) return;
      destroyed = true; // request.destroy just do .end - .abort is what we want
  
      if (isRequest(stream)) return stream.abort();
      if (typeof stream.destroy === 'function') return stream.destroy();
      callback(err || new ERR_STREAM_DESTROYED('pipe'));
    };
  }
  
  function call(fn) {
    fn();
  }
  
  function pipe(from, to) {
    return from.pipe(to);
  }
  
  function popCallback(streams) {
    if (!streams.length) return noop;
    if (typeof streams[streams.length - 1] !== 'function') return noop;
    return streams.pop();
  }
  
  function pipeline() {
    for (var _len = arguments.length, streams = new Array(_len), _key = 0; _key < _len; _key++) {
      streams[_key] = arguments[_key];
    }
  
    var callback = popCallback(streams);
    if (Array.isArray(streams[0])) streams = streams[0];
  
    if (streams.length < 2) {
      throw new ERR_MISSING_ARGS('streams');
    }
  
    var error;
    var destroys = streams.map(function (stream, i) {
      var reading = i < streams.length - 1;
      var writing = i > 0;
      return destroyer(stream, reading, writing, function (err) {
        if (!error) error = err;
        if (err) destroys.forEach(call);
        if (reading) return;
        destroys.forEach(call);
        callback(error);
      });
    });
    return streams.reduce(pipe);
  }
  
  module.exports = pipeline;
  },{"../../../errors":12,"./end-of-stream":21}],24:[function(require,module,exports){
  'use strict';
  
  var ERR_INVALID_OPT_VALUE = require('../../../errors').codes.ERR_INVALID_OPT_VALUE;
  
  function highWaterMarkFrom(options, isDuplex, duplexKey) {
    return options.highWaterMark != null ? options.highWaterMark : isDuplex ? options[duplexKey] : null;
  }
  
  function getHighWaterMark(state, options, duplexKey, isDuplex) {
    var hwm = highWaterMarkFrom(options, isDuplex, duplexKey);
  
    if (hwm != null) {
      if (!(isFinite(hwm) && Math.floor(hwm) === hwm) || hwm < 0) {
        var name = isDuplex ? duplexKey : 'highWaterMark';
        throw new ERR_INVALID_OPT_VALUE(name, hwm);
      }
  
      return Math.floor(hwm);
    } // Default value
  
  
    return state.objectMode ? 16 : 16 * 1024;
  }
  
  module.exports = {
    getHighWaterMark: getHighWaterMark
  };
  },{"../../../errors":12}],25:[function(require,module,exports){
  module.exports = require('events').EventEmitter;
  
  },{"events":9}],26:[function(require,module,exports){
  'use strict';
  
  var GetIntrinsic = require('get-intrinsic');
  
  var callBind = require('./');
  
  var $indexOf = callBind(GetIntrinsic('String.prototype.indexOf'));
  
  module.exports = function callBoundIntrinsic(name, allowMissing) {
  	var intrinsic = GetIntrinsic(name, !!allowMissing);
  	if (typeof intrinsic === 'function' && $indexOf(name, '.prototype.') > -1) {
  		return callBind(intrinsic);
  	}
  	return intrinsic;
  };
  
  },{"./":27,"get-intrinsic":91}],27:[function(require,module,exports){
  'use strict';
  
  var bind = require('function-bind');
  var GetIntrinsic = require('get-intrinsic');
  
  var $apply = GetIntrinsic('%Function.prototype.apply%');
  var $call = GetIntrinsic('%Function.prototype.call%');
  var $reflectApply = GetIntrinsic('%Reflect.apply%', true) || bind.call($call, $apply);
  
  var $gOPD = GetIntrinsic('%Object.getOwnPropertyDescriptor%', true);
  var $defineProperty = GetIntrinsic('%Object.defineProperty%', true);
  var $max = GetIntrinsic('%Math.max%');
  
  if ($defineProperty) {
  	try {
  		$defineProperty({}, 'a', { value: 1 });
  	} catch (e) {
  		// IE 8 has a broken defineProperty
  		$defineProperty = null;
  	}
  }
  
  module.exports = function callBind(originalFunction) {
  	var func = $reflectApply(bind, $call, arguments);
  	if ($gOPD && $defineProperty) {
  		var desc = $gOPD(func, 'length');
  		if (desc.configurable) {
  			// original length, plus the receiver, minus any additional arguments (after the receiver)
  			$defineProperty(
  				func,
  				'length',
  				{ value: 1 + $max(0, originalFunction.length - (arguments.length - 1)) }
  			);
  		}
  	}
  	return func;
  };
  
  var applyBind = function applyBind() {
  	return $reflectApply(bind, $apply, arguments);
  };
  
  if ($defineProperty) {
  	$defineProperty(module.exports, 'apply', { value: applyBind });
  } else {
  	module.exports.apply = applyBind;
  }
  
  },{"function-bind":90,"get-intrinsic":91}],28:[function(require,module,exports){
  var pSlice = Array.prototype.slice;
  var objectKeys = require('./lib/keys.js');
  var isArguments = require('./lib/is_arguments.js');
  
  var deepEqual = module.exports = function (actual, expected, opts) {
    if (!opts) opts = {};
    // 7.1. All identical values are equivalent, as determined by ===.
    if (actual === expected) {
      return true;
  
    } else if (actual instanceof Date && expected instanceof Date) {
      return actual.getTime() === expected.getTime();
  
    // 7.3. Other pairs that do not both pass typeof value == 'object',
    // equivalence is determined by ==.
    } else if (!actual || !expected || typeof actual != 'object' && typeof expected != 'object') {
      return opts.strict ? actual === expected : actual == expected;
  
    // 7.4. For all other Object pairs, including Array objects, equivalence is
    // determined by having the same number of owned properties (as verified
    // with Object.prototype.hasOwnProperty.call), the same set of keys
    // (although not necessarily the same order), equivalent values for every
    // corresponding key, and an identical 'prototype' property. Note: this
    // accounts for both named and indexed properties on Arrays.
    } else {
      return objEquiv(actual, expected, opts);
    }
  }
  
  function isUndefinedOrNull(value) {
    return value === null || value === undefined;
  }
  
  function isBuffer (x) {
    if (!x || typeof x !== 'object' || typeof x.length !== 'number') return false;
    if (typeof x.copy !== 'function' || typeof x.slice !== 'function') {
      return false;
    }
    if (x.length > 0 && typeof x[0] !== 'number') return false;
    return true;
  }
  
  function objEquiv(a, b, opts) {
    var i, key;
    if (isUndefinedOrNull(a) || isUndefinedOrNull(b))
      return false;
    // an identical 'prototype' property.
    if (a.prototype !== b.prototype) return false;
    //~~~I've managed to break Object.keys through screwy arguments passing.
    //   Converting to array solves the problem.
    if (isArguments(a)) {
      if (!isArguments(b)) {
        return false;
      }
      a = pSlice.call(a);
      b = pSlice.call(b);
      return deepEqual(a, b, opts);
    }
    if (isBuffer(a)) {
      if (!isBuffer(b)) {
        return false;
      }
      if (a.length !== b.length) return false;
      for (i = 0; i < a.length; i++) {
        if (a[i] !== b[i]) return false;
      }
      return true;
    }
    try {
      var ka = objectKeys(a),
          kb = objectKeys(b);
    } catch (e) {//happens when one is a string literal and the other isn't
      return false;
    }
    // having the same number of owned properties (keys incorporates
    // hasOwnProperty)
    if (ka.length != kb.length)
      return false;
    //the same set of keys (although not necessarily the same order),
    ka.sort();
    kb.sort();
    //~~~cheap key test
    for (i = ka.length - 1; i >= 0; i--) {
      if (ka[i] != kb[i])
        return false;
    }
    //equivalent values for every corresponding key, and
    //~~~possibly expensive deep test
    for (i = ka.length - 1; i >= 0; i--) {
      key = ka[i];
      if (!deepEqual(a[key], b[key], opts)) return false;
    }
    return typeof a === typeof b;
  }
  
  },{"./lib/is_arguments.js":29,"./lib/keys.js":30}],29:[function(require,module,exports){
  var supportsArgumentsClass = (function(){
    return Object.prototype.toString.call(arguments)
  })() == '[object Arguments]';
  
  exports = module.exports = supportsArgumentsClass ? supported : unsupported;
  
  exports.supported = supported;
  function supported(object) {
    return Object.prototype.toString.call(object) == '[object Arguments]';
  };
  
  exports.unsupported = unsupported;
  function unsupported(object){
    return object &&
      typeof object == 'object' &&
      typeof object.length == 'number' &&
      Object.prototype.hasOwnProperty.call(object, 'callee') &&
      !Object.prototype.propertyIsEnumerable.call(object, 'callee') ||
      false;
  };
  
  },{}],30:[function(require,module,exports){
  exports = module.exports = typeof Object.keys === 'function'
    ? Object.keys : shim;
  
  exports.shim = shim;
  function shim (obj) {
    var keys = [];
    for (var key in obj) keys.push(key);
    return keys;
  }
  
  },{}],31:[function(require,module,exports){
  'use strict';
  
  var keys = require('object-keys');
  var hasSymbols = typeof Symbol === 'function' && typeof Symbol('foo') === 'symbol';
  
  var toStr = Object.prototype.toString;
  var concat = Array.prototype.concat;
  var origDefineProperty = Object.defineProperty;
  
  var isFunction = function (fn) {
  	return typeof fn === 'function' && toStr.call(fn) === '[object Function]';
  };
  
  var hasPropertyDescriptors = require('has-property-descriptors')();
  
  var supportsDescriptors = origDefineProperty && hasPropertyDescriptors;
  
  var defineProperty = function (object, name, value, predicate) {
  	if (name in object && (!isFunction(predicate) || !predicate())) {
  		return;
  	}
  	if (supportsDescriptors) {
  		origDefineProperty(object, name, {
  			configurable: true,
  			enumerable: false,
  			value: value,
  			writable: true
  		});
  	} else {
  		object[name] = value; // eslint-disable-line no-param-reassign
  	}
  };
  
  var defineProperties = function (object, map) {
  	var predicates = arguments.length > 2 ? arguments[2] : {};
  	var props = keys(map);
  	if (hasSymbols) {
  		props = concat.call(props, Object.getOwnPropertySymbols(map));
  	}
  	for (var i = 0; i < props.length; i += 1) {
  		defineProperty(object, props[i], map[props[i]], predicates[props[i]]);
  	}
  };
  
  defineProperties.supportsDescriptors = !!supportsDescriptors;
  
  module.exports = defineProperties;
  
  },{"has-property-descriptors":92,"object-keys":100}],32:[function(require,module,exports){
  module.exports = function () {
      for (var i = 0; i < arguments.length; i++) {
          if (arguments[i] !== undefined) return arguments[i];
      }
  };
  
  },{}],33:[function(require,module,exports){
  'use strict';
  
  var ToNumber = require('./ToNumber');
  var ToPrimitive = require('./ToPrimitive');
  var Type = require('./Type');
  
  // https://262.ecma-international.org/5.1/#sec-11.9.3
  
  module.exports = function AbstractEqualityComparison(x, y) {
  	var xType = Type(x);
  	var yType = Type(y);
  	if (xType === yType) {
  		return x === y; // ES6+ specified this shortcut anyways.
  	}
  	if (x == null && y == null) {
  		return true;
  	}
  	if (xType === 'Number' && yType === 'String') {
  		return AbstractEqualityComparison(x, ToNumber(y));
  	}
  	if (xType === 'String' && yType === 'Number') {
  		return AbstractEqualityComparison(ToNumber(x), y);
  	}
  	if (xType === 'Boolean') {
  		return AbstractEqualityComparison(ToNumber(x), y);
  	}
  	if (yType === 'Boolean') {
  		return AbstractEqualityComparison(x, ToNumber(y));
  	}
  	if ((xType === 'String' || xType === 'Number') && yType === 'Object') {
  		return AbstractEqualityComparison(x, ToPrimitive(y));
  	}
  	if (xType === 'Object' && (yType === 'String' || yType === 'Number')) {
  		return AbstractEqualityComparison(ToPrimitive(x), y);
  	}
  	return false;
  };
  
  },{"./ToNumber":63,"./ToPrimitive":65,"./Type":70}],34:[function(require,module,exports){
  'use strict';
  
  var GetIntrinsic = require('get-intrinsic');
  
  var $Number = GetIntrinsic('%Number%');
  var $TypeError = GetIntrinsic('%TypeError%');
  
  var $isNaN = require('../helpers/isNaN');
  var $isFinite = require('../helpers/isFinite');
  var isPrefixOf = require('../helpers/isPrefixOf');
  
  var ToNumber = require('./ToNumber');
  var ToPrimitive = require('./ToPrimitive');
  var Type = require('./Type');
  
  // https://262.ecma-international.org/5.1/#sec-11.8.5
  
  // eslint-disable-next-line max-statements
  module.exports = function AbstractRelationalComparison(x, y, LeftFirst) {
  	if (Type(LeftFirst) !== 'Boolean') {
  		throw new $TypeError('Assertion failed: LeftFirst argument must be a Boolean');
  	}
  	var px;
  	var py;
  	if (LeftFirst) {
  		px = ToPrimitive(x, $Number);
  		py = ToPrimitive(y, $Number);
  	} else {
  		py = ToPrimitive(y, $Number);
  		px = ToPrimitive(x, $Number);
  	}
  	var bothStrings = Type(px) === 'String' && Type(py) === 'String';
  	if (!bothStrings) {
  		var nx = ToNumber(px);
  		var ny = ToNumber(py);
  		if ($isNaN(nx) || $isNaN(ny)) {
  			return undefined;
  		}
  		if ($isFinite(nx) && $isFinite(ny) && nx === ny) {
  			return false;
  		}
  		if (nx === Infinity) {
  			return false;
  		}
  		if (ny === Infinity) {
  			return true;
  		}
  		if (ny === -Infinity) {
  			return false;
  		}
  		if (nx === -Infinity) {
  			return true;
  		}
  		return nx < ny; // by now, these are both nonzero, finite, and not equal
  	}
  	if (isPrefixOf(py, px)) {
  		return false;
  	}
  	if (isPrefixOf(px, py)) {
  		return true;
  	}
  	return px < py; // both strings, neither a prefix of the other. shortcut for steps c-f
  };
  
  },{"../helpers/isFinite":79,"../helpers/isNaN":81,"../helpers/isPrefixOf":82,"./ToNumber":63,"./ToPrimitive":65,"./Type":70,"get-intrinsic":91}],35:[function(require,module,exports){
  'use strict';
  
  var GetIntrinsic = require('get-intrinsic');
  
  var $TypeError = GetIntrinsic('%TypeError%');
  
  // http://262.ecma-international.org/5.1/#sec-9.10
  
  module.exports = function CheckObjectCoercible(value, optMessage) {
  	if (value == null) {
  		throw new $TypeError(optMessage || ('Cannot call method on ' + value));
  	}
  	return value;
  };
  
  },{"get-intrinsic":91}],36:[function(require,module,exports){
  'use strict';
  
  var GetIntrinsic = require('get-intrinsic');
  
  var $EvalError = GetIntrinsic('%EvalError%');
  
  var DayWithinYear = require('./DayWithinYear');
  var InLeapYear = require('./InLeapYear');
  var MonthFromTime = require('./MonthFromTime');
  
  // https://262.ecma-international.org/5.1/#sec-15.9.1.5
  
  module.exports = function DateFromTime(t) {
  	var m = MonthFromTime(t);
  	var d = DayWithinYear(t);
  	if (m === 0) {
  		return d + 1;
  	}
  	if (m === 1) {
  		return d - 30;
  	}
  	var leap = InLeapYear(t);
  	if (m === 2) {
  		return d - 58 - leap;
  	}
  	if (m === 3) {
  		return d - 89 - leap;
  	}
  	if (m === 4) {
  		return d - 119 - leap;
  	}
  	if (m === 5) {
  		return d - 150 - leap;
  	}
  	if (m === 6) {
  		return d - 180 - leap;
  	}
  	if (m === 7) {
  		return d - 211 - leap;
  	}
  	if (m === 8) {
  		return d - 242 - leap;
  	}
  	if (m === 9) {
  		return d - 272 - leap;
  	}
  	if (m === 10) {
  		return d - 303 - leap;
  	}
  	if (m === 11) {
  		return d - 333 - leap;
  	}
  	throw new $EvalError('Assertion failed: MonthFromTime returned an impossible value: ' + m);
  };
  
  },{"./DayWithinYear":39,"./InLeapYear":43,"./MonthFromTime":53,"get-intrinsic":91}],37:[function(require,module,exports){
  'use strict';
  
  var floor = require('./floor');
  
  var msPerDay = require('../helpers/timeConstants').msPerDay;
  
  // https://262.ecma-international.org/5.1/#sec-15.9.1.2
  
  module.exports = function Day(t) {
  	return floor(t / msPerDay);
  };
  
  },{"../helpers/timeConstants":86,"./floor":74}],38:[function(require,module,exports){
  'use strict';
  
  var floor = require('./floor');
  
  // https://262.ecma-international.org/5.1/#sec-15.9.1.3
  
  module.exports = function DayFromYear(y) {
  	return (365 * (y - 1970)) + floor((y - 1969) / 4) - floor((y - 1901) / 100) + floor((y - 1601) / 400);
  };
  
  
  },{"./floor":74}],39:[function(require,module,exports){
  'use strict';
  
  var Day = require('./Day');
  var DayFromYear = require('./DayFromYear');
  var YearFromTime = require('./YearFromTime');
  
  // https://262.ecma-international.org/5.1/#sec-15.9.1.4
  
  module.exports = function DayWithinYear(t) {
  	return Day(t) - DayFromYear(YearFromTime(t));
  };
  
  },{"./Day":37,"./DayFromYear":38,"./YearFromTime":72}],40:[function(require,module,exports){
  'use strict';
  
  var modulo = require('./modulo');
  
  // https://262.ecma-international.org/5.1/#sec-15.9.1.3
  
  module.exports = function DaysInYear(y) {
  	if (modulo(y, 4) !== 0) {
  		return 365;
  	}
  	if (modulo(y, 100) !== 0) {
  		return 366;
  	}
  	if (modulo(y, 400) !== 0) {
  		return 365;
  	}
  	return 366;
  };
  
  },{"./modulo":75}],41:[function(require,module,exports){
  'use strict';
  
  var GetIntrinsic = require('get-intrinsic');
  
  var $TypeError = GetIntrinsic('%TypeError%');
  
  var Type = require('./Type');
  var IsDataDescriptor = require('./IsDataDescriptor');
  var IsAccessorDescriptor = require('./IsAccessorDescriptor');
  
  var assertRecord = require('../helpers/assertRecord');
  
  // https://262.ecma-international.org/5.1/#sec-8.10.4
  
  module.exports = function FromPropertyDescriptor(Desc) {
  	if (typeof Desc === 'undefined') {
  		return Desc;
  	}
  
  	assertRecord(Type, 'Property Descriptor', 'Desc', Desc);
  
  	if (IsDataDescriptor(Desc)) {
  		return {
  			value: Desc['[[Value]]'],
  			writable: !!Desc['[[Writable]]'],
  			enumerable: !!Desc['[[Enumerable]]'],
  			configurable: !!Desc['[[Configurable]]']
  		};
  	} else if (IsAccessorDescriptor(Desc)) {
  		return {
  			get: Desc['[[Get]]'],
  			set: Desc['[[Set]]'],
  			enumerable: !!Desc['[[Enumerable]]'],
  			configurable: !!Desc['[[Configurable]]']
  		};
  	}
  	throw new $TypeError('FromPropertyDescriptor must be called with a fully populated Property Descriptor');
  
  };
  
  },{"../helpers/assertRecord":78,"./IsAccessorDescriptor":44,"./IsDataDescriptor":46,"./Type":70,"get-intrinsic":91}],42:[function(require,module,exports){
  'use strict';
  
  var floor = require('./floor');
  var modulo = require('./modulo');
  
  var timeConstants = require('../helpers/timeConstants');
  var msPerHour = timeConstants.msPerHour;
  var HoursPerDay = timeConstants.HoursPerDay;
  
  // https://262.ecma-international.org/5.1/#sec-15.9.1.10
  
  module.exports = function HourFromTime(t) {
  	return modulo(floor(t / msPerHour), HoursPerDay);
  };
  
  },{"../helpers/timeConstants":86,"./floor":74,"./modulo":75}],43:[function(require,module,exports){
  'use strict';
  
  var GetIntrinsic = require('get-intrinsic');
  
  var $EvalError = GetIntrinsic('%EvalError%');
  
  var DaysInYear = require('./DaysInYear');
  var YearFromTime = require('./YearFromTime');
  
  // https://262.ecma-international.org/5.1/#sec-15.9.1.3
  
  module.exports = function InLeapYear(t) {
  	var days = DaysInYear(YearFromTime(t));
  	if (days === 365) {
  		return 0;
  	}
  	if (days === 366) {
  		return 1;
  	}
  	throw new $EvalError('Assertion failed: there are not 365 or 366 days in a year, got: ' + days);
  };
  
  },{"./DaysInYear":40,"./YearFromTime":72,"get-intrinsic":91}],44:[function(require,module,exports){
  'use strict';
  
  var has = require('has');
  
  var Type = require('./Type');
  
  var assertRecord = require('../helpers/assertRecord');
  
  // https://262.ecma-international.org/5.1/#sec-8.10.1
  
  module.exports = function IsAccessorDescriptor(Desc) {
  	if (typeof Desc === 'undefined') {
  		return false;
  	}
  
  	assertRecord(Type, 'Property Descriptor', 'Desc', Desc);
  
  	if (!has(Desc, '[[Get]]') && !has(Desc, '[[Set]]')) {
  		return false;
  	}
  
  	return true;
  };
  
  },{"../helpers/assertRecord":78,"./Type":70,"has":95}],45:[function(require,module,exports){
  'use strict';
  
  // http://262.ecma-international.org/5.1/#sec-9.11
  
  module.exports = require('is-callable');
  
  },{"is-callable":98}],46:[function(require,module,exports){
  'use strict';
  
  var has = require('has');
  
  var Type = require('./Type');
  
  var assertRecord = require('../helpers/assertRecord');
  
  // https://262.ecma-international.org/5.1/#sec-8.10.2
  
  module.exports = function IsDataDescriptor(Desc) {
  	if (typeof Desc === 'undefined') {
  		return false;
  	}
  
  	assertRecord(Type, 'Property Descriptor', 'Desc', Desc);
  
  	if (!has(Desc, '[[Value]]') && !has(Desc, '[[Writable]]')) {
  		return false;
  	}
  
  	return true;
  };
  
  },{"../helpers/assertRecord":78,"./Type":70,"has":95}],47:[function(require,module,exports){
  'use strict';
  
  var IsAccessorDescriptor = require('./IsAccessorDescriptor');
  var IsDataDescriptor = require('./IsDataDescriptor');
  var Type = require('./Type');
  
  var assertRecord = require('../helpers/assertRecord');
  
  // https://262.ecma-international.org/5.1/#sec-8.10.3
  
  module.exports = function IsGenericDescriptor(Desc) {
  	if (typeof Desc === 'undefined') {
  		return false;
  	}
  
  	assertRecord(Type, 'Property Descriptor', 'Desc', Desc);
  
  	if (!IsAccessorDescriptor(Desc) && !IsDataDescriptor(Desc)) {
  		return true;
  	}
  
  	return false;
  };
  
  },{"../helpers/assertRecord":78,"./IsAccessorDescriptor":44,"./IsDataDescriptor":46,"./Type":70}],48:[function(require,module,exports){
  'use strict';
  
  // TODO, semver-major: delete this
  
  var isPropertyDescriptor = require('../helpers/isPropertyDescriptor');
  
  var Type = require('./Type');
  var IsDataDescriptor = require('./IsDataDescriptor');
  var IsAccessorDescriptor = require('./IsAccessorDescriptor');
  
  // https://262.ecma-international.org/6.0/#sec-property-descriptor-specification-type
  
  module.exports = function IsPropertyDescriptor(Desc) {
  	return isPropertyDescriptor({
  		IsDataDescriptor: IsDataDescriptor,
  		IsAccessorDescriptor: IsAccessorDescriptor,
  		Type: Type
  	}, Desc);
  };
  
  },{"../helpers/isPropertyDescriptor":83,"./IsAccessorDescriptor":44,"./IsDataDescriptor":46,"./Type":70}],49:[function(require,module,exports){
  'use strict';
  
  var $isFinite = require('../helpers/isFinite');
  var msPerDay = require('../helpers/timeConstants').msPerDay;
  
  // https://262.ecma-international.org/5.1/#sec-15.9.1.13
  
  module.exports = function MakeDate(day, time) {
  	if (!$isFinite(day) || !$isFinite(time)) {
  		return NaN;
  	}
  	return (day * msPerDay) + time;
  };
  
  },{"../helpers/isFinite":79,"../helpers/timeConstants":86}],50:[function(require,module,exports){
  'use strict';
  
  var GetIntrinsic = require('get-intrinsic');
  
  var $DateUTC = GetIntrinsic('%Date.UTC%');
  
  var $isFinite = require('../helpers/isFinite');
  
  var DateFromTime = require('./DateFromTime');
  var Day = require('./Day');
  var floor = require('./floor');
  var modulo = require('./modulo');
  var MonthFromTime = require('./MonthFromTime');
  var ToInteger = require('./ToInteger');
  var YearFromTime = require('./YearFromTime');
  
  // https://262.ecma-international.org/5.1/#sec-15.9.1.12
  
  module.exports = function MakeDay(year, month, date) {
  	if (!$isFinite(year) || !$isFinite(month) || !$isFinite(date)) {
  		return NaN;
  	}
  	var y = ToInteger(year);
  	var m = ToInteger(month);
  	var dt = ToInteger(date);
  	var ym = y + floor(m / 12);
  	var mn = modulo(m, 12);
  	var t = $DateUTC(ym, mn, 1);
  	if (YearFromTime(t) !== ym || MonthFromTime(t) !== mn || DateFromTime(t) !== 1) {
  		return NaN;
  	}
  	return Day(t) + dt - 1;
  };
  
  },{"../helpers/isFinite":79,"./DateFromTime":36,"./Day":37,"./MonthFromTime":53,"./ToInteger":62,"./YearFromTime":72,"./floor":74,"./modulo":75,"get-intrinsic":91}],51:[function(require,module,exports){
  'use strict';
  
  var $isFinite = require('../helpers/isFinite');
  var timeConstants = require('../helpers/timeConstants');
  var msPerSecond = timeConstants.msPerSecond;
  var msPerMinute = timeConstants.msPerMinute;
  var msPerHour = timeConstants.msPerHour;
  
  var ToInteger = require('./ToInteger');
  
  // https://262.ecma-international.org/5.1/#sec-15.9.1.11
  
  module.exports = function MakeTime(hour, min, sec, ms) {
  	if (!$isFinite(hour) || !$isFinite(min) || !$isFinite(sec) || !$isFinite(ms)) {
  		return NaN;
  	}
  	var h = ToInteger(hour);
  	var m = ToInteger(min);
  	var s = ToInteger(sec);
  	var milli = ToInteger(ms);
  	var t = (h * msPerHour) + (m * msPerMinute) + (s * msPerSecond) + milli;
  	return t;
  };
  
  },{"../helpers/isFinite":79,"../helpers/timeConstants":86,"./ToInteger":62}],52:[function(require,module,exports){
  'use strict';
  
  var floor = require('./floor');
  var modulo = require('./modulo');
  
  var timeConstants = require('../helpers/timeConstants');
  var msPerMinute = timeConstants.msPerMinute;
  var MinutesPerHour = timeConstants.MinutesPerHour;
  
  // https://262.ecma-international.org/5.1/#sec-15.9.1.10
  
  module.exports = function MinFromTime(t) {
  	return modulo(floor(t / msPerMinute), MinutesPerHour);
  };
  
  },{"../helpers/timeConstants":86,"./floor":74,"./modulo":75}],53:[function(require,module,exports){
  'use strict';
  
  var DayWithinYear = require('./DayWithinYear');
  var InLeapYear = require('./InLeapYear');
  
  // https://262.ecma-international.org/5.1/#sec-15.9.1.4
  
  module.exports = function MonthFromTime(t) {
  	var day = DayWithinYear(t);
  	if (0 <= day && day < 31) {
  		return 0;
  	}
  	var leap = InLeapYear(t);
  	if (31 <= day && day < (59 + leap)) {
  		return 1;
  	}
  	if ((59 + leap) <= day && day < (90 + leap)) {
  		return 2;
  	}
  	if ((90 + leap) <= day && day < (120 + leap)) {
  		return 3;
  	}
  	if ((120 + leap) <= day && day < (151 + leap)) {
  		return 4;
  	}
  	if ((151 + leap) <= day && day < (181 + leap)) {
  		return 5;
  	}
  	if ((181 + leap) <= day && day < (212 + leap)) {
  		return 6;
  	}
  	if ((212 + leap) <= day && day < (243 + leap)) {
  		return 7;
  	}
  	if ((243 + leap) <= day && day < (273 + leap)) {
  		return 8;
  	}
  	if ((273 + leap) <= day && day < (304 + leap)) {
  		return 9;
  	}
  	if ((304 + leap) <= day && day < (334 + leap)) {
  		return 10;
  	}
  	if ((334 + leap) <= day && day < (365 + leap)) {
  		return 11;
  	}
  };
  
  },{"./DayWithinYear":39,"./InLeapYear":43}],54:[function(require,module,exports){
  'use strict';
  
  var $isNaN = require('../helpers/isNaN');
  
  // http://262.ecma-international.org/5.1/#sec-9.12
  
  module.exports = function SameValue(x, y) {
  	if (x === y) { // 0 === -0, but they are not identical.
  		if (x === 0) { return 1 / x === 1 / y; }
  		return true;
  	}
  	return $isNaN(x) && $isNaN(y);
  };
  
  },{"../helpers/isNaN":81}],55:[function(require,module,exports){
  'use strict';
  
  var floor = require('./floor');
  var modulo = require('./modulo');
  
  var timeConstants = require('../helpers/timeConstants');
  var msPerSecond = timeConstants.msPerSecond;
  var SecondsPerMinute = timeConstants.SecondsPerMinute;
  
  // https://262.ecma-international.org/5.1/#sec-15.9.1.10
  
  module.exports = function SecFromTime(t) {
  	return modulo(floor(t / msPerSecond), SecondsPerMinute);
  };
  
  },{"../helpers/timeConstants":86,"./floor":74,"./modulo":75}],56:[function(require,module,exports){
  'use strict';
  
  var Type = require('./Type');
  
  // https://262.ecma-international.org/5.1/#sec-11.9.6
  
  module.exports = function StrictEqualityComparison(x, y) {
  	var xType = Type(x);
  	var yType = Type(y);
  	if (xType !== yType) {
  		return false;
  	}
  	if (xType === 'Undefined' || xType === 'Null') {
  		return true;
  	}
  	return x === y; // shortcut for steps 4-7
  };
  
  },{"./Type":70}],57:[function(require,module,exports){
  'use strict';
  
  var GetIntrinsic = require('get-intrinsic');
  
  var $Date = GetIntrinsic('%Date%');
  var $Number = GetIntrinsic('%Number%');
  
  var $isFinite = require('../helpers/isFinite');
  
  var abs = require('./abs');
  var ToNumber = require('./ToNumber');
  
  // https://262.ecma-international.org/5.1/#sec-15.9.1.14
  
  module.exports = function TimeClip(time) {
  	if (!$isFinite(time) || abs(time) > 8.64e15) {
  		return NaN;
  	}
  	return $Number(new $Date(ToNumber(time)));
  };
  
  
  },{"../helpers/isFinite":79,"./ToNumber":63,"./abs":73,"get-intrinsic":91}],58:[function(require,module,exports){
  'use strict';
  
  var msPerDay = require('../helpers/timeConstants').msPerDay;
  
  var DayFromYear = require('./DayFromYear');
  
  // https://262.ecma-international.org/5.1/#sec-15.9.1.3
  
  module.exports = function TimeFromYear(y) {
  	return msPerDay * DayFromYear(y);
  };
  
  },{"../helpers/timeConstants":86,"./DayFromYear":38}],59:[function(require,module,exports){
  'use strict';
  
  var modulo = require('./modulo');
  
  var msPerDay = require('../helpers/timeConstants').msPerDay;
  
  // https://262.ecma-international.org/5.1/#sec-15.9.1.2
  
  module.exports = function TimeWithinDay(t) {
  	return modulo(t, msPerDay);
  };
  
  
  },{"../helpers/timeConstants":86,"./modulo":75}],60:[function(require,module,exports){
  'use strict';
  
  // http://262.ecma-international.org/5.1/#sec-9.2
  
  module.exports = function ToBoolean(value) { return !!value; };
  
  },{}],61:[function(require,module,exports){
  'use strict';
  
  var ToNumber = require('./ToNumber');
  
  // http://262.ecma-international.org/5.1/#sec-9.5
  
  module.exports = function ToInt32(x) {
  	return ToNumber(x) >> 0;
  };
  
  },{"./ToNumber":63}],62:[function(require,module,exports){
  'use strict';
  
  var abs = require('./abs');
  var floor = require('./floor');
  var ToNumber = require('./ToNumber');
  
  var $isNaN = require('../helpers/isNaN');
  var $isFinite = require('../helpers/isFinite');
  var $sign = require('../helpers/sign');
  
  // http://262.ecma-international.org/5.1/#sec-9.4
  
  module.exports = function ToInteger(value) {
  	var number = ToNumber(value);
  	if ($isNaN(number)) { return 0; }
  	if (number === 0 || !$isFinite(number)) { return number; }
  	return $sign(number) * floor(abs(number));
  };
  
  },{"../helpers/isFinite":79,"../helpers/isNaN":81,"../helpers/sign":85,"./ToNumber":63,"./abs":73,"./floor":74}],63:[function(require,module,exports){
  'use strict';
  
  var ToPrimitive = require('./ToPrimitive');
  
  // http://262.ecma-international.org/5.1/#sec-9.3
  
  module.exports = function ToNumber(value) {
  	var prim = ToPrimitive(value, Number);
  	if (typeof prim !== 'string') {
  		return +prim; // eslint-disable-line no-implicit-coercion
  	}
  
  	// eslint-disable-next-line no-control-regex
  	var trimmed = prim.replace(/^[ \t\x0b\f\xa0\ufeff\n\r\u2028\u2029\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u0085]+|[ \t\x0b\f\xa0\ufeff\n\r\u2028\u2029\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u0085]+$/g, '');
  	if ((/^0[ob]|^[+-]0x/).test(trimmed)) {
  		return NaN;
  	}
  
  	return +trimmed; // eslint-disable-line no-implicit-coercion
  };
  
  },{"./ToPrimitive":65}],64:[function(require,module,exports){
  'use strict';
  
  var GetIntrinsic = require('get-intrinsic');
  
  var $Object = GetIntrinsic('%Object%');
  
  var CheckObjectCoercible = require('./CheckObjectCoercible');
  
  // http://262.ecma-international.org/5.1/#sec-9.9
  
  module.exports = function ToObject(value) {
  	CheckObjectCoercible(value);
  	return $Object(value);
  };
  
  },{"./CheckObjectCoercible":35,"get-intrinsic":91}],65:[function(require,module,exports){
  'use strict';
  
  // http://262.ecma-international.org/5.1/#sec-9.1
  
  module.exports = require('es-to-primitive/es5');
  
  },{"es-to-primitive/es5":87}],66:[function(require,module,exports){
  'use strict';
  
  var has = require('has');
  
  var GetIntrinsic = require('get-intrinsic');
  
  var $TypeError = GetIntrinsic('%TypeError%');
  
  var Type = require('./Type');
  var ToBoolean = require('./ToBoolean');
  var IsCallable = require('./IsCallable');
  
  // https://262.ecma-international.org/5.1/#sec-8.10.5
  
  module.exports = function ToPropertyDescriptor(Obj) {
  	if (Type(Obj) !== 'Object') {
  		throw new $TypeError('ToPropertyDescriptor requires an object');
  	}
  
  	var desc = {};
  	if (has(Obj, 'enumerable')) {
  		desc['[[Enumerable]]'] = ToBoolean(Obj.enumerable);
  	}
  	if (has(Obj, 'configurable')) {
  		desc['[[Configurable]]'] = ToBoolean(Obj.configurable);
  	}
  	if (has(Obj, 'value')) {
  		desc['[[Value]]'] = Obj.value;
  	}
  	if (has(Obj, 'writable')) {
  		desc['[[Writable]]'] = ToBoolean(Obj.writable);
  	}
  	if (has(Obj, 'get')) {
  		var getter = Obj.get;
  		if (typeof getter !== 'undefined' && !IsCallable(getter)) {
  			throw new $TypeError('getter must be a function');
  		}
  		desc['[[Get]]'] = getter;
  	}
  	if (has(Obj, 'set')) {
  		var setter = Obj.set;
  		if (typeof setter !== 'undefined' && !IsCallable(setter)) {
  			throw new $TypeError('setter must be a function');
  		}
  		desc['[[Set]]'] = setter;
  	}
  
  	if ((has(desc, '[[Get]]') || has(desc, '[[Set]]')) && (has(desc, '[[Value]]') || has(desc, '[[Writable]]'))) {
  		throw new $TypeError('Invalid property descriptor. Cannot both specify accessors and a value or writable attribute');
  	}
  	return desc;
  };
  
  },{"./IsCallable":45,"./ToBoolean":60,"./Type":70,"get-intrinsic":91,"has":95}],67:[function(require,module,exports){
  'use strict';
  
  var GetIntrinsic = require('get-intrinsic');
  
  var $String = GetIntrinsic('%String%');
  
  // http://262.ecma-international.org/5.1/#sec-9.8
  
  module.exports = function ToString(value) {
  	return $String(value);
  };
  
  
  },{"get-intrinsic":91}],68:[function(require,module,exports){
  'use strict';
  
  var abs = require('./abs');
  var floor = require('./floor');
  var modulo = require('./modulo');
  var ToNumber = require('./ToNumber');
  
  var $isNaN = require('../helpers/isNaN');
  var $isFinite = require('../helpers/isFinite');
  var $sign = require('../helpers/sign');
  
  // http://262.ecma-international.org/5.1/#sec-9.7
  
  module.exports = function ToUint16(value) {
  	var number = ToNumber(value);
  	if ($isNaN(number) || number === 0 || !$isFinite(number)) { return 0; }
  	var posInt = $sign(number) * floor(abs(number));
  	return modulo(posInt, 0x10000);
  };
  
  },{"../helpers/isFinite":79,"../helpers/isNaN":81,"../helpers/sign":85,"./ToNumber":63,"./abs":73,"./floor":74,"./modulo":75}],69:[function(require,module,exports){
  'use strict';
  
  var ToNumber = require('./ToNumber');
  
  // http://262.ecma-international.org/5.1/#sec-9.6
  
  module.exports = function ToUint32(x) {
  	return ToNumber(x) >>> 0;
  };
  
  },{"./ToNumber":63}],70:[function(require,module,exports){
  'use strict';
  
  // https://262.ecma-international.org/5.1/#sec-8
  
  module.exports = function Type(x) {
  	if (x === null) {
  		return 'Null';
  	}
  	if (typeof x === 'undefined') {
  		return 'Undefined';
  	}
  	if (typeof x === 'function' || typeof x === 'object') {
  		return 'Object';
  	}
  	if (typeof x === 'number') {
  		return 'Number';
  	}
  	if (typeof x === 'boolean') {
  		return 'Boolean';
  	}
  	if (typeof x === 'string') {
  		return 'String';
  	}
  };
  
  },{}],71:[function(require,module,exports){
  'use strict';
  
  var Day = require('./Day');
  var modulo = require('./modulo');
  
  // https://262.ecma-international.org/5.1/#sec-15.9.1.6
  
  module.exports = function WeekDay(t) {
  	return modulo(Day(t) + 4, 7);
  };
  
  },{"./Day":37,"./modulo":75}],72:[function(require,module,exports){
  'use strict';
  
  var GetIntrinsic = require('get-intrinsic');
  
  var $Date = GetIntrinsic('%Date%');
  
  var callBound = require('call-bind/callBound');
  
  var $getUTCFullYear = callBound('Date.prototype.getUTCFullYear');
  
  // https://262.ecma-international.org/5.1/#sec-15.9.1.3
  
  module.exports = function YearFromTime(t) {
  	// largest y such that this.TimeFromYear(y) <= t
  	return $getUTCFullYear(new $Date(t));
  };
  
  },{"call-bind/callBound":26,"get-intrinsic":91}],73:[function(require,module,exports){
  'use strict';
  
  var GetIntrinsic = require('get-intrinsic');
  
  var $abs = GetIntrinsic('%Math.abs%');
  
  // http://262.ecma-international.org/5.1/#sec-5.2
  
  module.exports = function abs(x) {
  	return $abs(x);
  };
  
  },{"get-intrinsic":91}],74:[function(require,module,exports){
  'use strict';
  
  // var modulo = require('./modulo');
  var $floor = Math.floor;
  
  // http://262.ecma-international.org/5.1/#sec-5.2
  
  module.exports = function floor(x) {
  	// return x - modulo(x, 1);
  	return $floor(x);
  };
  
  },{}],75:[function(require,module,exports){
  'use strict';
  
  var mod = require('../helpers/mod');
  
  // https://262.ecma-international.org/5.1/#sec-5.2
  
  module.exports = function modulo(x, y) {
  	return mod(x, y);
  };
  
  },{"../helpers/mod":84}],76:[function(require,module,exports){
  'use strict';
  
  var modulo = require('./modulo');
  
  var msPerSecond = require('../helpers/timeConstants').msPerSecond;
  
  // https://262.ecma-international.org/5.1/#sec-15.9.1.10
  
  module.exports = function msFromTime(t) {
  	return modulo(t, msPerSecond);
  };
  
  },{"../helpers/timeConstants":86,"./modulo":75}],77:[function(require,module,exports){
  'use strict';
  
  /* eslint global-require: 0 */
  
  // https://es5.github.io/#x9
  module.exports = {
  	'Abstract Equality Comparison': require('./5/AbstractEqualityComparison'),
  	'Abstract Relational Comparison': require('./5/AbstractRelationalComparison'),
  	'Strict Equality Comparison': require('./5/StrictEqualityComparison'),
  	abs: require('./5/abs'),
  	CheckObjectCoercible: require('./5/CheckObjectCoercible'),
  	DateFromTime: require('./5/DateFromTime'),
  	Day: require('./5/Day'),
  	DayFromYear: require('./5/DayFromYear'),
  	DaysInYear: require('./5/DaysInYear'),
  	DayWithinYear: require('./5/DayWithinYear'),
  	floor: require('./5/floor'),
  	FromPropertyDescriptor: require('./5/FromPropertyDescriptor'),
  	HourFromTime: require('./5/HourFromTime'),
  	InLeapYear: require('./5/InLeapYear'),
  	IsAccessorDescriptor: require('./5/IsAccessorDescriptor'),
  	IsCallable: require('./5/IsCallable'),
  	IsDataDescriptor: require('./5/IsDataDescriptor'),
  	IsGenericDescriptor: require('./5/IsGenericDescriptor'),
  	IsPropertyDescriptor: require('./5/IsPropertyDescriptor'),
  	MakeDate: require('./5/MakeDate'),
  	MakeDay: require('./5/MakeDay'),
  	MakeTime: require('./5/MakeTime'),
  	MinFromTime: require('./5/MinFromTime'),
  	modulo: require('./5/modulo'),
  	MonthFromTime: require('./5/MonthFromTime'),
  	msFromTime: require('./5/msFromTime'),
  	SameValue: require('./5/SameValue'),
  	SecFromTime: require('./5/SecFromTime'),
  	TimeClip: require('./5/TimeClip'),
  	TimeFromYear: require('./5/TimeFromYear'),
  	TimeWithinDay: require('./5/TimeWithinDay'),
  	ToBoolean: require('./5/ToBoolean'),
  	ToInt32: require('./5/ToInt32'),
  	ToInteger: require('./5/ToInteger'),
  	ToNumber: require('./5/ToNumber'),
  	ToObject: require('./5/ToObject'),
  	ToPrimitive: require('./5/ToPrimitive'),
  	ToPropertyDescriptor: require('./5/ToPropertyDescriptor'),
  	ToString: require('./5/ToString'),
  	ToUint16: require('./5/ToUint16'),
  	ToUint32: require('./5/ToUint32'),
  	Type: require('./5/Type'),
  	WeekDay: require('./5/WeekDay'),
  	YearFromTime: require('./5/YearFromTime')
  };
  
  },{"./5/AbstractEqualityComparison":33,"./5/AbstractRelationalComparison":34,"./5/CheckObjectCoercible":35,"./5/DateFromTime":36,"./5/Day":37,"./5/DayFromYear":38,"./5/DayWithinYear":39,"./5/DaysInYear":40,"./5/FromPropertyDescriptor":41,"./5/HourFromTime":42,"./5/InLeapYear":43,"./5/IsAccessorDescriptor":44,"./5/IsCallable":45,"./5/IsDataDescriptor":46,"./5/IsGenericDescriptor":47,"./5/IsPropertyDescriptor":48,"./5/MakeDate":49,"./5/MakeDay":50,"./5/MakeTime":51,"./5/MinFromTime":52,"./5/MonthFromTime":53,"./5/SameValue":54,"./5/SecFromTime":55,"./5/StrictEqualityComparison":56,"./5/TimeClip":57,"./5/TimeFromYear":58,"./5/TimeWithinDay":59,"./5/ToBoolean":60,"./5/ToInt32":61,"./5/ToInteger":62,"./5/ToNumber":63,"./5/ToObject":64,"./5/ToPrimitive":65,"./5/ToPropertyDescriptor":66,"./5/ToString":67,"./5/ToUint16":68,"./5/ToUint32":69,"./5/Type":70,"./5/WeekDay":71,"./5/YearFromTime":72,"./5/abs":73,"./5/floor":74,"./5/modulo":75,"./5/msFromTime":76}],78:[function(require,module,exports){
  'use strict';
  
  var GetIntrinsic = require('get-intrinsic');
  
  var $TypeError = GetIntrinsic('%TypeError%');
  var $SyntaxError = GetIntrinsic('%SyntaxError%');
  
  var has = require('has');
  
  var isMatchRecord = require('./isMatchRecord');
  
  var predicates = {
  	// https://262.ecma-international.org/6.0/#sec-property-descriptor-specification-type
  	'Property Descriptor': function isPropertyDescriptor(Desc) {
  		var allowed = {
  			'[[Configurable]]': true,
  			'[[Enumerable]]': true,
  			'[[Get]]': true,
  			'[[Set]]': true,
  			'[[Value]]': true,
  			'[[Writable]]': true
  		};
  
  		for (var key in Desc) { // eslint-disable-line
  			if (has(Desc, key) && !allowed[key]) {
  				return false;
  			}
  		}
  
  		var isData = has(Desc, '[[Value]]');
  		var IsAccessor = has(Desc, '[[Get]]') || has(Desc, '[[Set]]');
  		if (isData && IsAccessor) {
  			throw new $TypeError('Property Descriptors may not be both accessor and data descriptors');
  		}
  		return true;
  	},
  	// https://262.ecma-international.org/13.0/#sec-match-records
  	'Match Record': isMatchRecord
  };
  
  module.exports = function assertRecord(Type, recordType, argumentName, value) {
  	var predicate = predicates[recordType];
  	if (typeof predicate !== 'function') {
  		throw new $SyntaxError('unknown record type: ' + recordType);
  	}
  	if (Type(value) !== 'Object' || !predicate(value)) {
  		throw new $TypeError(argumentName + ' must be a ' + recordType);
  	}
  };
  
  },{"./isMatchRecord":80,"get-intrinsic":91,"has":95}],79:[function(require,module,exports){
  'use strict';
  
  var $isNaN = Number.isNaN || function (a) { return a !== a; };
  
  module.exports = Number.isFinite || function (x) { return typeof x === 'number' && !$isNaN(x) && x !== Infinity && x !== -Infinity; };
  
  },{}],80:[function(require,module,exports){
  'use strict';
  
  var has = require('has');
  
  // https://262.ecma-international.org/13.0/#sec-match-records
  
  module.exports = function isMatchRecord(record) {
  	return (
  		has(record, '[[StartIndex]]')
          && has(record, '[[EndIndex]]')
          && record['[[StartIndex]]'] >= 0
          && record['[[EndIndex]]'] >= record['[[StartIndex]]']
          && String(parseInt(record['[[StartIndex]]'], 10)) === String(record['[[StartIndex]]'])
          && String(parseInt(record['[[EndIndex]]'], 10)) === String(record['[[EndIndex]]'])
  	);
  };
  
  },{"has":95}],81:[function(require,module,exports){
  'use strict';
  
  module.exports = Number.isNaN || function isNaN(a) {
  	return a !== a;
  };
  
  },{}],82:[function(require,module,exports){
  'use strict';
  
  var $strSlice = require('call-bind/callBound')('String.prototype.slice');
  
  module.exports = function isPrefixOf(prefix, string) {
  	if (prefix === string) {
  		return true;
  	}
  	if (prefix.length > string.length) {
  		return false;
  	}
  	return $strSlice(string, 0, prefix.length) === prefix;
  };
  
  },{"call-bind/callBound":26}],83:[function(require,module,exports){
  'use strict';
  
  var GetIntrinsic = require('get-intrinsic');
  
  var has = require('has');
  var $TypeError = GetIntrinsic('%TypeError%');
  
  module.exports = function IsPropertyDescriptor(ES, Desc) {
  	if (ES.Type(Desc) !== 'Object') {
  		return false;
  	}
  	var allowed = {
  		'[[Configurable]]': true,
  		'[[Enumerable]]': true,
  		'[[Get]]': true,
  		'[[Set]]': true,
  		'[[Value]]': true,
  		'[[Writable]]': true
  	};
  
  	for (var key in Desc) { // eslint-disable-line no-restricted-syntax
  		if (has(Desc, key) && !allowed[key]) {
  			return false;
  		}
  	}
  
  	if (ES.IsDataDescriptor(Desc) && ES.IsAccessorDescriptor(Desc)) {
  		throw new $TypeError('Property Descriptors may not be both accessor and data descriptors');
  	}
  	return true;
  };
  
  },{"get-intrinsic":91,"has":95}],84:[function(require,module,exports){
  'use strict';
  
  var $floor = Math.floor;
  
  module.exports = function mod(number, modulo) {
  	var remain = number % modulo;
  	return $floor(remain >= 0 ? remain : remain + modulo);
  };
  
  },{}],85:[function(require,module,exports){
  'use strict';
  
  module.exports = function sign(number) {
  	return number >= 0 ? 1 : -1;
  };
  
  },{}],86:[function(require,module,exports){
  'use strict';
  
  var HoursPerDay = 24;
  var MinutesPerHour = 60;
  var SecondsPerMinute = 60;
  var msPerSecond = 1e3;
  var msPerMinute = msPerSecond * SecondsPerMinute;
  var msPerHour = msPerMinute * MinutesPerHour;
  var msPerDay = 86400000;
  
  module.exports = {
  	HoursPerDay: HoursPerDay,
  	MinutesPerHour: MinutesPerHour,
  	SecondsPerMinute: SecondsPerMinute,
  	msPerSecond: msPerSecond,
  	msPerMinute: msPerMinute,
  	msPerHour: msPerHour,
  	msPerDay: msPerDay
  };
  
  },{}],87:[function(require,module,exports){
  'use strict';
  
  var toStr = Object.prototype.toString;
  
  var isPrimitive = require('./helpers/isPrimitive');
  
  var isCallable = require('is-callable');
  
  // http://ecma-international.org/ecma-262/5.1/#sec-8.12.8
  var ES5internalSlots = {
  	'[[DefaultValue]]': function (O) {
  		var actualHint;
  		if (arguments.length > 1) {
  			actualHint = arguments[1];
  		} else {
  			actualHint = toStr.call(O) === '[object Date]' ? String : Number;
  		}
  
  		if (actualHint === String || actualHint === Number) {
  			var methods = actualHint === String ? ['toString', 'valueOf'] : ['valueOf', 'toString'];
  			var value, i;
  			for (i = 0; i < methods.length; ++i) {
  				if (isCallable(O[methods[i]])) {
  					value = O[methods[i]]();
  					if (isPrimitive(value)) {
  						return value;
  					}
  				}
  			}
  			throw new TypeError('No default value');
  		}
  		throw new TypeError('invalid [[DefaultValue]] hint supplied');
  	}
  };
  
  // http://ecma-international.org/ecma-262/5.1/#sec-9.1
  module.exports = function ToPrimitive(input) {
  	if (isPrimitive(input)) {
  		return input;
  	}
  	if (arguments.length > 1) {
  		return ES5internalSlots['[[DefaultValue]]'](input, arguments[1]);
  	}
  	return ES5internalSlots['[[DefaultValue]]'](input);
  };
  
  },{"./helpers/isPrimitive":88,"is-callable":98}],88:[function(require,module,exports){
  'use strict';
  
  module.exports = function isPrimitive(value) {
  	return value === null || (typeof value !== 'function' && typeof value !== 'object');
  };
  
  },{}],89:[function(require,module,exports){
  'use strict';
  
  /* eslint no-invalid-this: 1 */
  
  var ERROR_MESSAGE = 'Function.prototype.bind called on incompatible ';
  var slice = Array.prototype.slice;
  var toStr = Object.prototype.toString;
  var funcType = '[object Function]';
  
  module.exports = function bind(that) {
      var target = this;
      if (typeof target !== 'function' || toStr.call(target) !== funcType) {
          throw new TypeError(ERROR_MESSAGE + target);
      }
      var args = slice.call(arguments, 1);
  
      var bound;
      var binder = function () {
          if (this instanceof bound) {
              var result = target.apply(
                  this,
                  args.concat(slice.call(arguments))
              );
              if (Object(result) === result) {
                  return result;
              }
              return this;
          } else {
              return target.apply(
                  that,
                  args.concat(slice.call(arguments))
              );
          }
      };
  
      var boundLength = Math.max(0, target.length - args.length);
      var boundArgs = [];
      for (var i = 0; i < boundLength; i++) {
          boundArgs.push('$' + i);
      }
  
      bound = Function('binder', 'return function (' + boundArgs.join(',') + '){ return binder.apply(this,arguments); }')(binder);
  
      if (target.prototype) {
          var Empty = function Empty() {};
          Empty.prototype = target.prototype;
          bound.prototype = new Empty();
          Empty.prototype = null;
      }
  
      return bound;
  };
  
  },{}],90:[function(require,module,exports){
  'use strict';
  
  var implementation = require('./implementation');
  
  module.exports = Function.prototype.bind || implementation;
  
  },{"./implementation":89}],91:[function(require,module,exports){
  'use strict';
  
  var undefined;
  
  var $SyntaxError = SyntaxError;
  var $Function = Function;
  var $TypeError = TypeError;
  
  // eslint-disable-next-line consistent-return
  var getEvalledConstructor = function (expressionSyntax) {
  	try {
  		return $Function('"use strict"; return (' + expressionSyntax + ').constructor;')();
  	} catch (e) {}
  };
  
  var $gOPD = Object.getOwnPropertyDescriptor;
  if ($gOPD) {
  	try {
  		$gOPD({}, '');
  	} catch (e) {
  		$gOPD = null; // this is IE 8, which has a broken gOPD
  	}
  }
  
  var throwTypeError = function () {
  	throw new $TypeError();
  };
  var ThrowTypeError = $gOPD
  	? (function () {
  		try {
  			// eslint-disable-next-line no-unused-expressions, no-caller, no-restricted-properties
  			arguments.callee; // IE 8 does not throw here
  			return throwTypeError;
  		} catch (calleeThrows) {
  			try {
  				// IE 8 throws on Object.getOwnPropertyDescriptor(arguments, '')
  				return $gOPD(arguments, 'callee').get;
  			} catch (gOPDthrows) {
  				return throwTypeError;
  			}
  		}
  	}())
  	: throwTypeError;
  
  var hasSymbols = require('has-symbols')();
  
  var getProto = Object.getPrototypeOf || function (x) { return x.__proto__; }; // eslint-disable-line no-proto
  
  var needsEval = {};
  
  var TypedArray = typeof Uint8Array === 'undefined' ? undefined : getProto(Uint8Array);
  
  var INTRINSICS = {
  	'%AggregateError%': typeof AggregateError === 'undefined' ? undefined : AggregateError,
  	'%Array%': Array,
  	'%ArrayBuffer%': typeof ArrayBuffer === 'undefined' ? undefined : ArrayBuffer,
  	'%ArrayIteratorPrototype%': hasSymbols ? getProto([][Symbol.iterator]()) : undefined,
  	'%AsyncFromSyncIteratorPrototype%': undefined,
  	'%AsyncFunction%': needsEval,
  	'%AsyncGenerator%': needsEval,
  	'%AsyncGeneratorFunction%': needsEval,
  	'%AsyncIteratorPrototype%': needsEval,
  	'%Atomics%': typeof Atomics === 'undefined' ? undefined : Atomics,
  	'%BigInt%': typeof BigInt === 'undefined' ? undefined : BigInt,
  	'%Boolean%': Boolean,
  	'%DataView%': typeof DataView === 'undefined' ? undefined : DataView,
  	'%Date%': Date,
  	'%decodeURI%': decodeURI,
  	'%decodeURIComponent%': decodeURIComponent,
  	'%encodeURI%': encodeURI,
  	'%encodeURIComponent%': encodeURIComponent,
  	'%Error%': Error,
  	'%eval%': eval, // eslint-disable-line no-eval
  	'%EvalError%': EvalError,
  	'%Float32Array%': typeof Float32Array === 'undefined' ? undefined : Float32Array,
  	'%Float64Array%': typeof Float64Array === 'undefined' ? undefined : Float64Array,
  	'%FinalizationRegistry%': typeof FinalizationRegistry === 'undefined' ? undefined : FinalizationRegistry,
  	'%Function%': $Function,
  	'%GeneratorFunction%': needsEval,
  	'%Int8Array%': typeof Int8Array === 'undefined' ? undefined : Int8Array,
  	'%Int16Array%': typeof Int16Array === 'undefined' ? undefined : Int16Array,
  	'%Int32Array%': typeof Int32Array === 'undefined' ? undefined : Int32Array,
  	'%isFinite%': isFinite,
  	'%isNaN%': isNaN,
  	'%IteratorPrototype%': hasSymbols ? getProto(getProto([][Symbol.iterator]())) : undefined,
  	'%JSON%': typeof JSON === 'object' ? JSON : undefined,
  	'%Map%': typeof Map === 'undefined' ? undefined : Map,
  	'%MapIteratorPrototype%': typeof Map === 'undefined' || !hasSymbols ? undefined : getProto(new Map()[Symbol.iterator]()),
  	'%Math%': Math,
  	'%Number%': Number,
  	'%Object%': Object,
  	'%parseFloat%': parseFloat,
  	'%parseInt%': parseInt,
  	'%Promise%': typeof Promise === 'undefined' ? undefined : Promise,
  	'%Proxy%': typeof Proxy === 'undefined' ? undefined : Proxy,
  	'%RangeError%': RangeError,
  	'%ReferenceError%': ReferenceError,
  	'%Reflect%': typeof Reflect === 'undefined' ? undefined : Reflect,
  	'%RegExp%': RegExp,
  	'%Set%': typeof Set === 'undefined' ? undefined : Set,
  	'%SetIteratorPrototype%': typeof Set === 'undefined' || !hasSymbols ? undefined : getProto(new Set()[Symbol.iterator]()),
  	'%SharedArrayBuffer%': typeof SharedArrayBuffer === 'undefined' ? undefined : SharedArrayBuffer,
  	'%String%': String,
  	'%StringIteratorPrototype%': hasSymbols ? getProto(''[Symbol.iterator]()) : undefined,
  	'%Symbol%': hasSymbols ? Symbol : undefined,
  	'%SyntaxError%': $SyntaxError,
  	'%ThrowTypeError%': ThrowTypeError,
  	'%TypedArray%': TypedArray,
  	'%TypeError%': $TypeError,
  	'%Uint8Array%': typeof Uint8Array === 'undefined' ? undefined : Uint8Array,
  	'%Uint8ClampedArray%': typeof Uint8ClampedArray === 'undefined' ? undefined : Uint8ClampedArray,
  	'%Uint16Array%': typeof Uint16Array === 'undefined' ? undefined : Uint16Array,
  	'%Uint32Array%': typeof Uint32Array === 'undefined' ? undefined : Uint32Array,
  	'%URIError%': URIError,
  	'%WeakMap%': typeof WeakMap === 'undefined' ? undefined : WeakMap,
  	'%WeakRef%': typeof WeakRef === 'undefined' ? undefined : WeakRef,
  	'%WeakSet%': typeof WeakSet === 'undefined' ? undefined : WeakSet
  };
  
  var doEval = function doEval(name) {
  	var value;
  	if (name === '%AsyncFunction%') {
  		value = getEvalledConstructor('async function () {}');
  	} else if (name === '%GeneratorFunction%') {
  		value = getEvalledConstructor('function* () {}');
  	} else if (name === '%AsyncGeneratorFunction%') {
  		value = getEvalledConstructor('async function* () {}');
  	} else if (name === '%AsyncGenerator%') {
  		var fn = doEval('%AsyncGeneratorFunction%');
  		if (fn) {
  			value = fn.prototype;
  		}
  	} else if (name === '%AsyncIteratorPrototype%') {
  		var gen = doEval('%AsyncGenerator%');
  		if (gen) {
  			value = getProto(gen.prototype);
  		}
  	}
  
  	INTRINSICS[name] = value;
  
  	return value;
  };
  
  var LEGACY_ALIASES = {
  	'%ArrayBufferPrototype%': ['ArrayBuffer', 'prototype'],
  	'%ArrayPrototype%': ['Array', 'prototype'],
  	'%ArrayProto_entries%': ['Array', 'prototype', 'entries'],
  	'%ArrayProto_forEach%': ['Array', 'prototype', 'forEach'],
  	'%ArrayProto_keys%': ['Array', 'prototype', 'keys'],
  	'%ArrayProto_values%': ['Array', 'prototype', 'values'],
  	'%AsyncFunctionPrototype%': ['AsyncFunction', 'prototype'],
  	'%AsyncGenerator%': ['AsyncGeneratorFunction', 'prototype'],
  	'%AsyncGeneratorPrototype%': ['AsyncGeneratorFunction', 'prototype', 'prototype'],
  	'%BooleanPrototype%': ['Boolean', 'prototype'],
  	'%DataViewPrototype%': ['DataView', 'prototype'],
  	'%DatePrototype%': ['Date', 'prototype'],
  	'%ErrorPrototype%': ['Error', 'prototype'],
  	'%EvalErrorPrototype%': ['EvalError', 'prototype'],
  	'%Float32ArrayPrototype%': ['Float32Array', 'prototype'],
  	'%Float64ArrayPrototype%': ['Float64Array', 'prototype'],
  	'%FunctionPrototype%': ['Function', 'prototype'],
  	'%Generator%': ['GeneratorFunction', 'prototype'],
  	'%GeneratorPrototype%': ['GeneratorFunction', 'prototype', 'prototype'],
  	'%Int8ArrayPrototype%': ['Int8Array', 'prototype'],
  	'%Int16ArrayPrototype%': ['Int16Array', 'prototype'],
  	'%Int32ArrayPrototype%': ['Int32Array', 'prototype'],
  	'%JSONParse%': ['JSON', 'parse'],
  	'%JSONStringify%': ['JSON', 'stringify'],
  	'%MapPrototype%': ['Map', 'prototype'],
  	'%NumberPrototype%': ['Number', 'prototype'],
  	'%ObjectPrototype%': ['Object', 'prototype'],
  	'%ObjProto_toString%': ['Object', 'prototype', 'toString'],
  	'%ObjProto_valueOf%': ['Object', 'prototype', 'valueOf'],
  	'%PromisePrototype%': ['Promise', 'prototype'],
  	'%PromiseProto_then%': ['Promise', 'prototype', 'then'],
  	'%Promise_all%': ['Promise', 'all'],
  	'%Promise_reject%': ['Promise', 'reject'],
  	'%Promise_resolve%': ['Promise', 'resolve'],
  	'%RangeErrorPrototype%': ['RangeError', 'prototype'],
  	'%ReferenceErrorPrototype%': ['ReferenceError', 'prototype'],
  	'%RegExpPrototype%': ['RegExp', 'prototype'],
  	'%SetPrototype%': ['Set', 'prototype'],
  	'%SharedArrayBufferPrototype%': ['SharedArrayBuffer', 'prototype'],
  	'%StringPrototype%': ['String', 'prototype'],
  	'%SymbolPrototype%': ['Symbol', 'prototype'],
  	'%SyntaxErrorPrototype%': ['SyntaxError', 'prototype'],
  	'%TypedArrayPrototype%': ['TypedArray', 'prototype'],
  	'%TypeErrorPrototype%': ['TypeError', 'prototype'],
  	'%Uint8ArrayPrototype%': ['Uint8Array', 'prototype'],
  	'%Uint8ClampedArrayPrototype%': ['Uint8ClampedArray', 'prototype'],
  	'%Uint16ArrayPrototype%': ['Uint16Array', 'prototype'],
  	'%Uint32ArrayPrototype%': ['Uint32Array', 'prototype'],
  	'%URIErrorPrototype%': ['URIError', 'prototype'],
  	'%WeakMapPrototype%': ['WeakMap', 'prototype'],
  	'%WeakSetPrototype%': ['WeakSet', 'prototype']
  };
  
  var bind = require('function-bind');
  var hasOwn = require('has');
  var $concat = bind.call(Function.call, Array.prototype.concat);
  var $spliceApply = bind.call(Function.apply, Array.prototype.splice);
  var $replace = bind.call(Function.call, String.prototype.replace);
  var $strSlice = bind.call(Function.call, String.prototype.slice);
  
  /* adapted from https://github.com/lodash/lodash/blob/4.17.15/dist/lodash.js#L6735-L6744 */
  var rePropName = /[^%.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|%$))/g;
  var reEscapeChar = /\\(\\)?/g; /** Used to match backslashes in property paths. */
  var stringToPath = function stringToPath(string) {
  	var first = $strSlice(string, 0, 1);
  	var last = $strSlice(string, -1);
  	if (first === '%' && last !== '%') {
  		throw new $SyntaxError('invalid intrinsic syntax, expected closing `%`');
  	} else if (last === '%' && first !== '%') {
  		throw new $SyntaxError('invalid intrinsic syntax, expected opening `%`');
  	}
  	var result = [];
  	$replace(string, rePropName, function (match, number, quote, subString) {
  		result[result.length] = quote ? $replace(subString, reEscapeChar, '$1') : number || match;
  	});
  	return result;
  };
  /* end adaptation */
  
  var getBaseIntrinsic = function getBaseIntrinsic(name, allowMissing) {
  	var intrinsicName = name;
  	var alias;
  	if (hasOwn(LEGACY_ALIASES, intrinsicName)) {
  		alias = LEGACY_ALIASES[intrinsicName];
  		intrinsicName = '%' + alias[0] + '%';
  	}
  
  	if (hasOwn(INTRINSICS, intrinsicName)) {
  		var value = INTRINSICS[intrinsicName];
  		if (value === needsEval) {
  			value = doEval(intrinsicName);
  		}
  		if (typeof value === 'undefined' && !allowMissing) {
  			throw new $TypeError('intrinsic ' + name + ' exists, but is not available. Please file an issue!');
  		}
  
  		return {
  			alias: alias,
  			name: intrinsicName,
  			value: value
  		};
  	}
  
  	throw new $SyntaxError('intrinsic ' + name + ' does not exist!');
  };
  
  module.exports = function GetIntrinsic(name, allowMissing) {
  	if (typeof name !== 'string' || name.length === 0) {
  		throw new $TypeError('intrinsic name must be a non-empty string');
  	}
  	if (arguments.length > 1 && typeof allowMissing !== 'boolean') {
  		throw new $TypeError('"allowMissing" argument must be a boolean');
  	}
  
  	var parts = stringToPath(name);
  	var intrinsicBaseName = parts.length > 0 ? parts[0] : '';
  
  	var intrinsic = getBaseIntrinsic('%' + intrinsicBaseName + '%', allowMissing);
  	var intrinsicRealName = intrinsic.name;
  	var value = intrinsic.value;
  	var skipFurtherCaching = false;
  
  	var alias = intrinsic.alias;
  	if (alias) {
  		intrinsicBaseName = alias[0];
  		$spliceApply(parts, $concat([0, 1], alias));
  	}
  
  	for (var i = 1, isOwn = true; i < parts.length; i += 1) {
  		var part = parts[i];
  		var first = $strSlice(part, 0, 1);
  		var last = $strSlice(part, -1);
  		if (
  			(
  				(first === '"' || first === "'" || first === '`')
  				|| (last === '"' || last === "'" || last === '`')
  			)
  			&& first !== last
  		) {
  			throw new $SyntaxError('property names with quotes must have matching quotes');
  		}
  		if (part === 'constructor' || !isOwn) {
  			skipFurtherCaching = true;
  		}
  
  		intrinsicBaseName += '.' + part;
  		intrinsicRealName = '%' + intrinsicBaseName + '%';
  
  		if (hasOwn(INTRINSICS, intrinsicRealName)) {
  			value = INTRINSICS[intrinsicRealName];
  		} else if (value != null) {
  			if (!(part in value)) {
  				if (!allowMissing) {
  					throw new $TypeError('base intrinsic for ' + name + ' exists, but the property is not available.');
  				}
  				return void undefined;
  			}
  			if ($gOPD && (i + 1) >= parts.length) {
  				var desc = $gOPD(value, part);
  				isOwn = !!desc;
  
  				// By convention, when a data property is converted to an accessor
  				// property to emulate a data property that does not suffer from
  				// the override mistake, that accessor's getter is marked with
  				// an `originalValue` property. Here, when we detect this, we
  				// uphold the illusion by pretending to see that original data
  				// property, i.e., returning the value rather than the getter
  				// itself.
  				if (isOwn && 'get' in desc && !('originalValue' in desc.get)) {
  					value = desc.get;
  				} else {
  					value = value[part];
  				}
  			} else {
  				isOwn = hasOwn(value, part);
  				value = value[part];
  			}
  
  			if (isOwn && !skipFurtherCaching) {
  				INTRINSICS[intrinsicRealName] = value;
  			}
  		}
  	}
  	return value;
  };
  
  },{"function-bind":90,"has":95,"has-symbols":93}],92:[function(require,module,exports){
  'use strict';
  
  var GetIntrinsic = require('get-intrinsic');
  
  var $defineProperty = GetIntrinsic('%Object.defineProperty%', true);
  
  var hasPropertyDescriptors = function hasPropertyDescriptors() {
  	if ($defineProperty) {
  		try {
  			$defineProperty({}, 'a', { value: 1 });
  			return true;
  		} catch (e) {
  			// IE 8 has a broken defineProperty
  			return false;
  		}
  	}
  	return false;
  };
  
  hasPropertyDescriptors.hasArrayLengthDefineBug = function hasArrayLengthDefineBug() {
  	// node v0.6 has a bug where array lengths can be Set but not Defined
  	if (!hasPropertyDescriptors()) {
  		return null;
  	}
  	try {
  		return $defineProperty([], 'length', { value: 1 }).length !== 1;
  	} catch (e) {
  		// In Firefox 4-22, defining length on an array throws an exception.
  		return true;
  	}
  };
  
  module.exports = hasPropertyDescriptors;
  
  },{"get-intrinsic":91}],93:[function(require,module,exports){
  'use strict';
  
  var origSymbol = typeof Symbol !== 'undefined' && Symbol;
  var hasSymbolSham = require('./shams');
  
  module.exports = function hasNativeSymbols() {
  	if (typeof origSymbol !== 'function') { return false; }
  	if (typeof Symbol !== 'function') { return false; }
  	if (typeof origSymbol('foo') !== 'symbol') { return false; }
  	if (typeof Symbol('bar') !== 'symbol') { return false; }
  
  	return hasSymbolSham();
  };
  
  },{"./shams":94}],94:[function(require,module,exports){
  'use strict';
  
  /* eslint complexity: [2, 18], max-statements: [2, 33] */
  module.exports = function hasSymbols() {
  	if (typeof Symbol !== 'function' || typeof Object.getOwnPropertySymbols !== 'function') { return false; }
  	if (typeof Symbol.iterator === 'symbol') { return true; }
  
  	var obj = {};
  	var sym = Symbol('test');
  	var symObj = Object(sym);
  	if (typeof sym === 'string') { return false; }
  
  	if (Object.prototype.toString.call(sym) !== '[object Symbol]') { return false; }
  	if (Object.prototype.toString.call(symObj) !== '[object Symbol]') { return false; }
  
  	// temp disabled per https://github.com/ljharb/object.assign/issues/17
  	// if (sym instanceof Symbol) { return false; }
  	// temp disabled per https://github.com/WebReflection/get-own-property-symbols/issues/4
  	// if (!(symObj instanceof Symbol)) { return false; }
  
  	// if (typeof Symbol.prototype.toString !== 'function') { return false; }
  	// if (String(sym) !== Symbol.prototype.toString.call(sym)) { return false; }
  
  	var symVal = 42;
  	obj[sym] = symVal;
  	for (sym in obj) { return false; } // eslint-disable-line no-restricted-syntax, no-unreachable-loop
  	if (typeof Object.keys === 'function' && Object.keys(obj).length !== 0) { return false; }
  
  	if (typeof Object.getOwnPropertyNames === 'function' && Object.getOwnPropertyNames(obj).length !== 0) { return false; }
  
  	var syms = Object.getOwnPropertySymbols(obj);
  	if (syms.length !== 1 || syms[0] !== sym) { return false; }
  
  	if (!Object.prototype.propertyIsEnumerable.call(obj, sym)) { return false; }
  
  	if (typeof Object.getOwnPropertyDescriptor === 'function') {
  		var descriptor = Object.getOwnPropertyDescriptor(obj, sym);
  		if (descriptor.value !== symVal || descriptor.enumerable !== true) { return false; }
  	}
  
  	return true;
  };
  
  },{}],95:[function(require,module,exports){
  'use strict';
  
  var bind = require('function-bind');
  
  module.exports = bind.call(Function.call, Object.prototype.hasOwnProperty);
  
  },{"function-bind":90}],96:[function(require,module,exports){
  /*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */
  exports.read = function (buffer, offset, isLE, mLen, nBytes) {
    var e, m
    var eLen = (nBytes * 8) - mLen - 1
    var eMax = (1 << eLen) - 1
    var eBias = eMax >> 1
    var nBits = -7
    var i = isLE ? (nBytes - 1) : 0
    var d = isLE ? -1 : 1
    var s = buffer[offset + i]
  
    i += d
  
    e = s & ((1 << (-nBits)) - 1)
    s >>= (-nBits)
    nBits += eLen
    for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}
  
    m = e & ((1 << (-nBits)) - 1)
    e >>= (-nBits)
    nBits += mLen
    for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}
  
    if (e === 0) {
      e = 1 - eBias
    } else if (e === eMax) {
      return m ? NaN : ((s ? -1 : 1) * Infinity)
    } else {
      m = m + Math.pow(2, mLen)
      e = e - eBias
    }
    return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
  }
  
  exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
    var e, m, c
    var eLen = (nBytes * 8) - mLen - 1
    var eMax = (1 << eLen) - 1
    var eBias = eMax >> 1
    var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
    var i = isLE ? 0 : (nBytes - 1)
    var d = isLE ? 1 : -1
    var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
  
    value = Math.abs(value)
  
    if (isNaN(value) || value === Infinity) {
      m = isNaN(value) ? 1 : 0
      e = eMax
    } else {
      e = Math.floor(Math.log(value) / Math.LN2)
      if (value * (c = Math.pow(2, -e)) < 1) {
        e--
        c *= 2
      }
      if (e + eBias >= 1) {
        value += rt / c
      } else {
        value += rt * Math.pow(2, 1 - eBias)
      }
      if (value * c >= 2) {
        e++
        c /= 2
      }
  
      if (e + eBias >= eMax) {
        m = 0
        e = eMax
      } else if (e + eBias >= 1) {
        m = ((value * c) - 1) * Math.pow(2, mLen)
        e = e + eBias
      } else {
        m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
        e = 0
      }
    }
  
    for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
  
    e = (e << mLen) | m
    eLen += mLen
    for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
  
    buffer[offset + i - d] |= s * 128
  }
  
  },{}],97:[function(require,module,exports){
  if (typeof Object.create === 'function') {
    // implementation from standard node.js 'util' module
    module.exports = function inherits(ctor, superCtor) {
      if (superCtor) {
        ctor.super_ = superCtor
        ctor.prototype = Object.create(superCtor.prototype, {
          constructor: {
            value: ctor,
            enumerable: false,
            writable: true,
            configurable: true
          }
        })
      }
    };
  } else {
    // old school shim for old browsers
    module.exports = function inherits(ctor, superCtor) {
      if (superCtor) {
        ctor.super_ = superCtor
        var TempCtor = function () {}
        TempCtor.prototype = superCtor.prototype
        ctor.prototype = new TempCtor()
        ctor.prototype.constructor = ctor
      }
    }
  }
  
  },{}],98:[function(require,module,exports){
  'use strict';
  
  var fnToStr = Function.prototype.toString;
  var reflectApply = typeof Reflect === 'object' && Reflect !== null && Reflect.apply;
  var badArrayLike;
  var isCallableMarker;
  if (typeof reflectApply === 'function' && typeof Object.defineProperty === 'function') {
  	try {
  		badArrayLike = Object.defineProperty({}, 'length', {
  			get: function () {
  				throw isCallableMarker;
  			}
  		});
  		isCallableMarker = {};
  		// eslint-disable-next-line no-throw-literal
  		reflectApply(function () { throw 42; }, null, badArrayLike);
  	} catch (_) {
  		if (_ !== isCallableMarker) {
  			reflectApply = null;
  		}
  	}
  } else {
  	reflectApply = null;
  }
  
  var constructorRegex = /^\s*class\b/;
  var isES6ClassFn = function isES6ClassFunction(value) {
  	try {
  		var fnStr = fnToStr.call(value);
  		return constructorRegex.test(fnStr);
  	} catch (e) {
  		return false; // not a function
  	}
  };
  
  var tryFunctionObject = function tryFunctionToStr(value) {
  	try {
  		if (isES6ClassFn(value)) { return false; }
  		fnToStr.call(value);
  		return true;
  	} catch (e) {
  		return false;
  	}
  };
  var toStr = Object.prototype.toString;
  var fnClass = '[object Function]';
  var genClass = '[object GeneratorFunction]';
  var hasToStringTag = typeof Symbol === 'function' && !!Symbol.toStringTag; // better: use `has-tostringtag`
  /* globals document: false */
  var documentDotAll = typeof document === 'object' && typeof document.all === 'undefined' && document.all !== undefined ? document.all : {};
  
  module.exports = reflectApply
  	? function isCallable(value) {
  		if (value === documentDotAll) { return true; }
  		if (!value) { return false; }
  		if (typeof value !== 'function' && typeof value !== 'object') { return false; }
  		if (typeof value === 'function' && !value.prototype) { return true; }
  		try {
  			reflectApply(value, null, badArrayLike);
  		} catch (e) {
  			if (e !== isCallableMarker) { return false; }
  		}
  		return !isES6ClassFn(value);
  	}
  	: function isCallable(value) {
  		if (value === documentDotAll) { return true; }
  		if (!value) { return false; }
  		if (typeof value !== 'function' && typeof value !== 'object') { return false; }
  		if (typeof value === 'function' && !value.prototype) { return true; }
  		if (hasToStringTag) { return tryFunctionObject(value); }
  		if (isES6ClassFn(value)) { return false; }
  		var strClass = toStr.call(value);
  		return strClass === fnClass || strClass === genClass;
  	};
  
  },{}],99:[function(require,module,exports){
  'use strict';
  
  var keysShim;
  if (!Object.keys) {
  	// modified from https://github.com/es-shims/es5-shim
  	var has = Object.prototype.hasOwnProperty;
  	var toStr = Object.prototype.toString;
  	var isArgs = require('./isArguments'); // eslint-disable-line global-require
  	var isEnumerable = Object.prototype.propertyIsEnumerable;
  	var hasDontEnumBug = !isEnumerable.call({ toString: null }, 'toString');
  	var hasProtoEnumBug = isEnumerable.call(function () {}, 'prototype');
  	var dontEnums = [
  		'toString',
  		'toLocaleString',
  		'valueOf',
  		'hasOwnProperty',
  		'isPrototypeOf',
  		'propertyIsEnumerable',
  		'constructor'
  	];
  	var equalsConstructorPrototype = function (o) {
  		var ctor = o.constructor;
  		return ctor && ctor.prototype === o;
  	};
  	var excludedKeys = {
  		$applicationCache: true,
  		$console: true,
  		$external: true,
  		$frame: true,
  		$frameElement: true,
  		$frames: true,
  		$innerHeight: true,
  		$innerWidth: true,
  		$onmozfullscreenchange: true,
  		$onmozfullscreenerror: true,
  		$outerHeight: true,
  		$outerWidth: true,
  		$pageXOffset: true,
  		$pageYOffset: true,
  		$parent: true,
  		$scrollLeft: true,
  		$scrollTop: true,
  		$scrollX: true,
  		$scrollY: true,
  		$self: true,
  		$webkitIndexedDB: true,
  		$webkitStorageInfo: true,
  		$window: true
  	};
  	var hasAutomationEqualityBug = (function () {
  		/* global window */
  		if (typeof window === 'undefined') { return false; }
  		for (var k in window) {
  			try {
  				if (!excludedKeys['$' + k] && has.call(window, k) && window[k] !== null && typeof window[k] === 'object') {
  					try {
  						equalsConstructorPrototype(window[k]);
  					} catch (e) {
  						return true;
  					}
  				}
  			} catch (e) {
  				return true;
  			}
  		}
  		return false;
  	}());
  	var equalsConstructorPrototypeIfNotBuggy = function (o) {
  		/* global window */
  		if (typeof window === 'undefined' || !hasAutomationEqualityBug) {
  			return equalsConstructorPrototype(o);
  		}
  		try {
  			return equalsConstructorPrototype(o);
  		} catch (e) {
  			return false;
  		}
  	};
  
  	keysShim = function keys(object) {
  		var isObject = object !== null && typeof object === 'object';
  		var isFunction = toStr.call(object) === '[object Function]';
  		var isArguments = isArgs(object);
  		var isString = isObject && toStr.call(object) === '[object String]';
  		var theKeys = [];
  
  		if (!isObject && !isFunction && !isArguments) {
  			throw new TypeError('Object.keys called on a non-object');
  		}
  
  		var skipProto = hasProtoEnumBug && isFunction;
  		if (isString && object.length > 0 && !has.call(object, 0)) {
  			for (var i = 0; i < object.length; ++i) {
  				theKeys.push(String(i));
  			}
  		}
  
  		if (isArguments && object.length > 0) {
  			for (var j = 0; j < object.length; ++j) {
  				theKeys.push(String(j));
  			}
  		} else {
  			for (var name in object) {
  				if (!(skipProto && name === 'prototype') && has.call(object, name)) {
  					theKeys.push(String(name));
  				}
  			}
  		}
  
  		if (hasDontEnumBug) {
  			var skipConstructor = equalsConstructorPrototypeIfNotBuggy(object);
  
  			for (var k = 0; k < dontEnums.length; ++k) {
  				if (!(skipConstructor && dontEnums[k] === 'constructor') && has.call(object, dontEnums[k])) {
  					theKeys.push(dontEnums[k]);
  				}
  			}
  		}
  		return theKeys;
  	};
  }
  module.exports = keysShim;
  
  },{"./isArguments":101}],100:[function(require,module,exports){
  'use strict';
  
  var slice = Array.prototype.slice;
  var isArgs = require('./isArguments');
  
  var origKeys = Object.keys;
  var keysShim = origKeys ? function keys(o) { return origKeys(o); } : require('./implementation');
  
  var originalKeys = Object.keys;
  
  keysShim.shim = function shimObjectKeys() {
  	if (Object.keys) {
  		var keysWorksWithArguments = (function () {
  			// Safari 5.0 bug
  			var args = Object.keys(arguments);
  			return args && args.length === arguments.length;
  		}(1, 2));
  		if (!keysWorksWithArguments) {
  			Object.keys = function keys(object) { // eslint-disable-line func-name-matching
  				if (isArgs(object)) {
  					return originalKeys(slice.call(object));
  				}
  				return originalKeys(object);
  			};
  		}
  	} else {
  		Object.keys = keysShim;
  	}
  	return Object.keys || keysShim;
  };
  
  module.exports = keysShim;
  
  },{"./implementation":99,"./isArguments":101}],101:[function(require,module,exports){
  'use strict';
  
  var toStr = Object.prototype.toString;
  
  module.exports = function isArguments(value) {
  	var str = toStr.call(value);
  	var isArgs = str === '[object Arguments]';
  	if (!isArgs) {
  		isArgs = str !== '[object Array]' &&
  			value !== null &&
  			typeof value === 'object' &&
  			typeof value.length === 'number' &&
  			value.length >= 0 &&
  			toStr.call(value.callee) === '[object Function]';
  	}
  	return isArgs;
  };
  
  },{}],102:[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; };
  
  },{}],103:[function(require,module,exports){
  (function (process,setImmediate){(function (){
  var through = require('through');
  var nextTick = typeof setImmediate !== 'undefined'
      ? setImmediate
      : process.nextTick
  ;
  
  module.exports = function (write, end) {
      var tr = through(write, end);
      tr.pause();
      var resume = tr.resume;
      var pause = tr.pause;
      var paused = false;
      
      tr.pause = function () {
          paused = true;
          return pause.apply(this, arguments);
      };
      
      tr.resume = function () {
          paused = false;
          return resume.apply(this, arguments);
      };
      
      nextTick(function () {
          if (!paused) tr.resume();
      });
      
      return tr;
  };
  
  }).call(this)}).call(this,require('_process'),require("timers").setImmediate)
  },{"_process":102,"through":116,"timers":117}],104:[function(require,module,exports){
  /*! safe-buffer. MIT License. Feross Aboukhadijeh <https://feross.org/opensource> */
  /* eslint-disable node/no-deprecated-api */
  var buffer = require('buffer')
  var Buffer = buffer.Buffer
  
  // alternative to using Object.keys for old browsers
  function copyProps (src, dst) {
    for (var key in src) {
      dst[key] = src[key]
    }
  }
  if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
    module.exports = buffer
  } else {
    // Copy properties from require('buffer')
    copyProps(buffer, exports)
    exports.Buffer = SafeBuffer
  }
  
  function SafeBuffer (arg, encodingOrOffset, length) {
    return Buffer(arg, encodingOrOffset, length)
  }
  
  SafeBuffer.prototype = Object.create(Buffer.prototype)
  
  // Copy static methods from Buffer
  copyProps(Buffer, SafeBuffer)
  
  SafeBuffer.from = function (arg, encodingOrOffset, length) {
    if (typeof arg === 'number') {
      throw new TypeError('Argument must not be a number')
    }
    return Buffer(arg, encodingOrOffset, length)
  }
  
  SafeBuffer.alloc = function (size, fill, encoding) {
    if (typeof size !== 'number') {
      throw new TypeError('Argument must be a number')
    }
    var buf = Buffer(size)
    if (fill !== undefined) {
      if (typeof encoding === 'string') {
        buf.fill(fill, encoding)
      } else {
        buf.fill(fill)
      }
    } else {
      buf.fill(0)
    }
    return buf
  }
  
  SafeBuffer.allocUnsafe = function (size) {
    if (typeof size !== 'number') {
      throw new TypeError('Argument must be a number')
    }
    return Buffer(size)
  }
  
  SafeBuffer.allocUnsafeSlow = function (size) {
    if (typeof size !== 'number') {
      throw new TypeError('Argument must be a number')
    }
    return buffer.SlowBuffer(size)
  }
  
  },{"buffer":8}],105:[function(require,module,exports){
  'use strict';
  
  var bind = require('function-bind');
  var ES = require('es-abstract/es5');
  var replace = bind.call(Function.call, String.prototype.replace);
  
  var leftWhitespace = /^[\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF]+/;
  var rightWhitespace = /[\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF]+$/;
  
  module.exports = function trim() {
  	var S = ES.ToString(ES.CheckObjectCoercible(this));
  	return replace(replace(S, leftWhitespace, ''), rightWhitespace, '');
  };
  
  },{"es-abstract/es5":77,"function-bind":90}],106:[function(require,module,exports){
  'use strict';
  
  var bind = require('function-bind');
  var define = require('define-properties');
  
  var implementation = require('./implementation');
  var getPolyfill = require('./polyfill');
  var shim = require('./shim');
  
  var boundTrim = bind.call(Function.call, getPolyfill());
  
  define(boundTrim, {
  	getPolyfill: getPolyfill,
  	implementation: implementation,
  	shim: shim
  });
  
  module.exports = boundTrim;
  
  },{"./implementation":105,"./polyfill":107,"./shim":108,"define-properties":31,"function-bind":90}],107:[function(require,module,exports){
  'use strict';
  
  var implementation = require('./implementation');
  
  var zeroWidthSpace = '\u200b';
  
  module.exports = function getPolyfill() {
  	if (String.prototype.trim && zeroWidthSpace.trim() === zeroWidthSpace) {
  		return String.prototype.trim;
  	}
  	return implementation;
  };
  
  },{"./implementation":105}],108:[function(require,module,exports){
  'use strict';
  
  var define = require('define-properties');
  var getPolyfill = require('./polyfill');
  
  module.exports = function shimStringTrim() {
  	var polyfill = getPolyfill();
  	define(String.prototype, { trim: polyfill }, { trim: function () { return String.prototype.trim !== polyfill; } });
  	return polyfill;
  };
  
  },{"./polyfill":107,"define-properties":31}],109:[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":104}],110:[function(require,module,exports){
  (function (process,setImmediate){(function (){
  var defined = require('defined');
  var createDefaultStream = require('./lib/default_stream');
  var Test = require('./lib/test');
  var createResult = require('./lib/results');
  var through = require('through');
  
  var canEmitExit = typeof process !== 'undefined' && process
      && typeof process.on === 'function' && process.browser !== true
  ;
  var canExit = typeof process !== 'undefined' && process
      && typeof process.exit === 'function'
  ;
  
  var nextTick = typeof setImmediate !== 'undefined'
      ? setImmediate
      : process.nextTick
  ;
  
  exports = module.exports = (function () {
      var harness;
      var lazyLoad = function () {
          return getHarness().apply(this, arguments);
      };
      
      lazyLoad.only = function () {
          return getHarness().only.apply(this, arguments);
      };
      
      lazyLoad.createStream = function (opts) {
          if (!opts) opts = {};
          if (!harness) {
              var output = through();
              getHarness({ stream: output, objectMode: opts.objectMode });
              return output;
          }
          return harness.createStream(opts);
      };
      
      lazyLoad.onFinish = function () {
          return getHarness().onFinish.apply(this, arguments);
      };
  
      lazyLoad.getHarness = getHarness
  
      return lazyLoad
  
      function getHarness (opts) {
          if (!opts) opts = {};
          opts.autoclose = !canEmitExit;
          if (!harness) harness = createExitHarness(opts);
          return harness;
      }
  })();
  
  function createExitHarness (conf) {
      if (!conf) conf = {};
      var harness = createHarness({
          autoclose: defined(conf.autoclose, false)
      });
      
      var stream = harness.createStream({ objectMode: conf.objectMode });
      var es = stream.pipe(conf.stream || createDefaultStream());
      if (canEmitExit) {
          es.on('error', function (err) { harness._exitCode = 1 });
      }
      
      var ended = false;
      stream.on('end', function () { ended = true });
      
      if (conf.exit === false) return harness;
      if (!canEmitExit || !canExit) return harness;
  
      var inErrorState = false;
  
      process.on('exit', function (code) {
          // let the process exit cleanly.
          if (code !== 0) {
              return
          }
  
          if (!ended) {
              var only = harness._results._only;
              for (var i = 0; i < harness._tests.length; i++) {
                  var t = harness._tests[i];
                  if (only && t.name !== only) continue;
                  t._exit();
              }
          }
          harness.close();
          process.exit(code || harness._exitCode);
      });
      
      return harness;
  }
  
  exports.createHarness = createHarness;
  exports.Test = Test;
  exports.test = exports; // tap compat
  exports.test.skip = Test.skip;
  
  var exitInterval;
  
  function createHarness (conf_) {
      if (!conf_) conf_ = {};
      var results = createResult();
      if (conf_.autoclose !== false) {
          results.once('done', function () { results.close() });
      }
      
      var test = function (name, conf, cb) {
          var t = new Test(name, conf, cb);
          test._tests.push(t);
          
          (function inspectCode (st) {
              st.on('test', function sub (st_) {
                  inspectCode(st_);
              });
              st.on('result', function (r) {
                  if (!r.ok && typeof r !== 'string') test._exitCode = 1
              });
          })(t);
          
          results.push(t);
          return t;
      };
      test._results = results;
      
      test._tests = [];
      
      test.createStream = function (opts) {
          return results.createStream(opts);
      };
  
      test.onFinish = function (cb) {
          results.on('done', cb);
      };
      
      var only = false;
      test.only = function (name) {
          if (only) throw new Error('there can only be one only test');
          results.only(name);
          only = true;
          return test.apply(null, arguments);
      };
      test._exitCode = 0;
      
      test.close = function () { results.close() };
      
      return test;
  }
  
  }).call(this)}).call(this,require('_process'),require("timers").setImmediate)
  },{"./lib/default_stream":111,"./lib/results":113,"./lib/test":114,"_process":102,"defined":32,"through":116,"timers":117}],111:[function(require,module,exports){
  (function (process){(function (){
  var through = require('through');
  var fs = require('fs');
  
  module.exports = function () {
      var line = '';
      var stream = through(write, flush);
      return stream;
      
      function write (buf) {
          for (var i = 0; i < buf.length; i++) {
              var c = typeof buf === 'string'
                  ? buf.charAt(i)
                  : String.fromCharCode(buf[i])
              ;
              if (c === '\n') flush();
              else line += c;
          }
      }
      
      function flush () {
          if (fs.writeSync && /^win/.test(process.platform)) {
              try { fs.writeSync(1, line + '\n'); }
              catch (e) { stream.emit('error', e) }
          }
          else {
              try { console.log(line) }
              catch (e) { stream.emit('error', e) }
          }
          line = '';
      }
  };
  
  }).call(this)}).call(this,require('_process'))
  },{"_process":102,"fs":7,"through":116}],112:[function(require,module,exports){
  (function (process,setImmediate){(function (){
  module.exports = typeof setImmediate !== 'undefined'
      ? setImmediate
      : process.nextTick
  ;
  
  }).call(this)}).call(this,require('_process'),require("timers").setImmediate)
  },{"_process":102,"timers":117}],113:[function(require,module,exports){
  (function (process,setImmediate){(function (){
  var EventEmitter = require('events').EventEmitter;
  var inherits = require('inherits');
  var through = require('through');
  var resumer = require('resumer');
  var inspect = require('object-inspect');
  var bind = require('function-bind');
  var has = require('has');
  var regexpTest = bind.call(Function.call, RegExp.prototype.test);
  var yamlIndicators = /\:|\-|\?/;
  var nextTick = typeof setImmediate !== 'undefined'
      ? setImmediate
      : process.nextTick
  ;
  
  module.exports = Results;
  inherits(Results, EventEmitter);
  
  function Results () {
      if (!(this instanceof Results)) return new Results;
      this.count = 0;
      this.fail = 0;
      this.pass = 0;
      this._stream = through();
      this.tests = [];
  }
  
  Results.prototype.createStream = function (opts) {
      if (!opts) opts = {};
      var self = this;
      var output, testId = 0;
      if (opts.objectMode) {
          output = through();
          self.on('_push', function ontest (t, extra) {
              if (!extra) extra = {};
              var id = testId++;
              t.once('prerun', function () {
                  var row = {
                      type: 'test',
                      name: t.name,
                      id: id
                  };
                  if (has(extra, 'parent')) {
                      row.parent = extra.parent;
                  }
                  output.queue(row);
              });
              t.on('test', function (st) {
                  ontest(st, { parent: id });
              });
              t.on('result', function (res) {
                  res.test = id;
                  res.type = 'assert';
                  output.queue(res);
              });
              t.on('end', function () {
                  output.queue({ type: 'end', test: id });
              });
          });
          self.on('done', function () { output.queue(null) });
      }
      else {
          output = resumer();
          output.queue('TAP version 13\n');
          self._stream.pipe(output);
      }
      
      nextTick(function next() {
          var t;
          while (t = getNextTest(self)) {
              t.run();
              if (!t.ended) return t.once('end', function(){ nextTick(next); });
          }
          self.emit('done');
      });
      
      return output;
  };
  
  Results.prototype.push = function (t) {
      var self = this;
      self.tests.push(t);
      self._watch(t);
      self.emit('_push', t);
  };
  
  Results.prototype.only = function (name) {
      this._only = name;
  };
  
  Results.prototype._watch = function (t) {
      var self = this;
      var write = function (s) { self._stream.queue(s) };
      t.once('prerun', function () {
          write('# ' + t.name + '\n');
      });
      
      t.on('result', function (res) {
          if (typeof res === 'string') {
              write('# ' + res + '\n');
              return;
          }
          write(encodeResult(res, self.count + 1));
          self.count ++;
  
          if (res.ok) self.pass ++
          else self.fail ++
      });
      
      t.on('test', function (st) { self._watch(st) });
  };
  
  Results.prototype.close = function () {
      var self = this;
      if (self.closed) self._stream.emit('error', new Error('ALREADY CLOSED'));
      self.closed = true;
      var write = function (s) { self._stream.queue(s) };
      
      write('\n1..' + self.count + '\n');
      write('# tests ' + self.count + '\n');
      write('# pass  ' + self.pass + '\n');
      if (self.fail) write('# fail  ' + self.fail + '\n')
      else write('\n# ok\n')
  
      self._stream.queue(null);
  };
  
  function encodeResult (res, count) {
      var output = '';
      output += (res.ok ? 'ok ' : 'not ok ') + count;
      output += res.name ? ' ' + res.name.toString().replace(/\s+/g, ' ') : '';
      
      if (res.skip) output += ' # SKIP';
      else if (res.todo) output += ' # TODO';
      
      output += '\n';
      if (res.ok) return output;
      
      var outer = '  ';
      var inner = outer + '  ';
      output += outer + '---\n';
      output += inner + 'operator: ' + res.operator + '\n';
      
      if (has(res, 'expected') || has(res, 'actual')) {
          var ex = inspect(res.expected);
          var ac = inspect(res.actual);
          
          if (Math.max(ex.length, ac.length) > 65 || invalidYaml(ex) || invalidYaml(ac)) {
              output += inner + 'expected: |-\n' + inner + '  ' + ex + '\n';
              output += inner + 'actual: |-\n' + inner + '  ' + ac + '\n';
          }
          else {
              output += inner + 'expected: ' + ex + '\n';
              output += inner + 'actual:   ' + ac + '\n';
          }
      }
      if (res.at) {
          output += inner + 'at: ' + res.at + '\n';
      }
      if (res.operator === 'error' && res.actual && res.actual.stack) {
          var lines = String(res.actual.stack).split('\n');
          output += inner + 'stack: |-\n';
          for (var i = 0; i < lines.length; i++) {
              output += inner + '  ' + lines[i] + '\n';
          }
      }
      
      output += outer + '...\n';
      return output;
  }
  
  function getNextTest (results) {
      if (!results._only) {
          return results.tests.shift();
      }
      
      do {
          var t = results.tests.shift();
          if (!t) continue;
          if (results._only === t.name) {
              return t;
          }
      } while (results.tests.length !== 0)
  }
  
  function invalidYaml (str) {
      return regexpTest(yamlIndicators, str);
  }
  
  }).call(this)}).call(this,require('_process'),require("timers").setImmediate)
  },{"_process":102,"events":9,"function-bind":90,"has":95,"inherits":97,"object-inspect":115,"resumer":103,"through":116,"timers":117}],114:[function(require,module,exports){
  (function (__dirname){(function (){
  var deepEqual = require('deep-equal');
  var defined = require('defined');
  var path = require('path');
  var inherits = require('inherits');
  var EventEmitter = require('events').EventEmitter;
  var has = require('has');
  var trim = require('string.prototype.trim');
  
  var nextTick = require('./next_tick');
  
  module.exports = Test;
  
  inherits(Test, EventEmitter);
  
  var getTestArgs = function (name_, opts_, cb_) {
      var name = '(anonymous)';
      var opts = {};
      var cb;
  
      for (var i = 0; i < arguments.length; i++) {
          var arg = arguments[i];
          var t = typeof arg;
          if (t === 'string') {
              name = arg;
          }
          else if (t === 'object') {
              opts = arg || opts;
          }
          else if (t === 'function') {
              cb = arg;
          }
      }
      return { name: name, opts: opts, cb: cb };
  };
  
  function Test (name_, opts_, cb_) {
      if (! (this instanceof Test)) {
          return new Test(name_, opts_, cb_);
      }
  
      var args = getTestArgs(name_, opts_, cb_);
  
      this.readable = true;
      this.name = args.name || '(anonymous)';
      this.assertCount = 0;
      this.pendingCount = 0;
      this._skip = args.opts.skip || false;
      this._timeout = args.opts.timeout;
      this._plan = undefined;
      this._cb = args.cb;
      this._progeny = [];
      this._ok = true;
  
      for (var prop in this) {
          this[prop] = (function bind(self, val) {
              if (typeof val === 'function') {
                  return function bound() {
                      return val.apply(self, arguments);
                  };
              }
              else return val;
          })(this, this[prop]);
      }
  }
  
  Test.prototype.run = function () {
      if (this._skip) {
          this.comment('SKIP ' + this.name);
      }
      if (!this._cb || this._skip) {
          return this._end();
      }
      if (this._timeout != null) {
          this.timeoutAfter(this._timeout);
      }
      this.emit('prerun');
      this._cb(this);
      this.emit('run');
  };
  
  Test.prototype.test = function (name, opts, cb) {
      var self = this;
      var t = new Test(name, opts, cb);
      this._progeny.push(t);
      this.pendingCount++;
      this.emit('test', t);
      t.on('prerun', function () {
          self.assertCount++;
      })
      
      if (!self._pendingAsserts()) {
          nextTick(function () {
              self._end();
          });
      }
      
      nextTick(function() {
          if (!self._plan && self.pendingCount == self._progeny.length) {
              self._end();
          }
      });
  };
  
  Test.prototype.comment = function (msg) {
      var that = this;
      trim(msg).split('\n').forEach(function (aMsg) {
          that.emit('result', trim(aMsg).replace(/^#\s*/, ''));
      });
  };
  
  Test.prototype.plan = function (n) {
      this._plan = n;
      this.emit('plan', n);
  };
  
  Test.prototype.timeoutAfter = function(ms) {
      if (!ms) throw new Error('timeoutAfter requires a timespan');
      var self = this;
      var timeout = setTimeout(function() {
          self.fail('test timed out after ' + ms + 'ms');
          self.end();
      }, ms);
      this.once('end', function() {
          clearTimeout(timeout);
      });
  }
  
  Test.prototype.end = function (err) { 
      var self = this;
      if (arguments.length >= 1 && !!err) {
          this.ifError(err);
      }
      
      if (this.calledEnd) {
          this.fail('.end() called twice');
      }
      this.calledEnd = true;
      this._end();
  };
  
  Test.prototype._end = function (err) {
      var self = this;
      if (this._progeny.length) {
          var t = this._progeny.shift();
          t.on('end', function () { self._end() });
          t.run();
          return;
      }
      
      if (!this.ended) this.emit('end');
      var pendingAsserts = this._pendingAsserts();
      if (!this._planError && this._plan !== undefined && pendingAsserts) {
          this._planError = true;
          this.fail('plan != count', {
              expected : this._plan,
              actual : this.assertCount
          });
      }
      this.ended = true;
  };
  
  Test.prototype._exit = function () {
      if (this._plan !== undefined &&
          !this._planError && this.assertCount !== this._plan) {
          this._planError = true;
          this.fail('plan != count', {
              expected : this._plan,
              actual : this.assertCount,
              exiting : true
          });
      }
      else if (!this.ended) {
          this.fail('test exited without ending', {
              exiting: true
          });
      }
  };
  
  Test.prototype._pendingAsserts = function () {
      if (this._plan === undefined) {
          return 1;
      }
      else {
          return this._plan - (this._progeny.length + this.assertCount);
      }
  };
  
  Test.prototype._assert = function assert (ok, opts) {
      var self = this;
      var extra = opts.extra || {};
      
      var res = {
          id : self.assertCount ++,
          ok : Boolean(ok),
          skip : defined(extra.skip, opts.skip),
          name : defined(extra.message, opts.message, '(unnamed assert)'),
          operator : defined(extra.operator, opts.operator)
      };
      if (has(opts, 'actual') || has(extra, 'actual')) {
          res.actual = defined(extra.actual, opts.actual);
      }
      if (has(opts, 'expected') || has(extra, 'expected')) {
          res.expected = defined(extra.expected, opts.expected);
      }
      this._ok = Boolean(this._ok && ok);
      
      if (!ok) {
          res.error = defined(extra.error, opts.error, new Error(res.name));
      }
      
      if (!ok) {
          var e = new Error('exception');
          var err = (e.stack || '').split('\n');
          var dir = path.dirname(__dirname) + '/';
          
          for (var i = 0; i < err.length; i++) {
              var m = /^[^\s]*\s*\bat\s+(.+)/.exec(err[i]);
              if (!m) {
                  continue;
              }
              
              var s = m[1].split(/\s+/);
              var filem = /(\/[^:\s]+:(\d+)(?::(\d+))?)/.exec(s[1]);
              if (!filem) {
                  filem = /(\/[^:\s]+:(\d+)(?::(\d+))?)/.exec(s[2]);
                  
                  if (!filem) {
                      filem = /(\/[^:\s]+:(\d+)(?::(\d+))?)/.exec(s[3]);
  
                      if (!filem) {
                          continue;
                      }
                  }
              }
              
              if (filem[1].slice(0, dir.length) === dir) {
                  continue;
              }
              
              res.functionName = s[0];
              res.file = filem[1];
              res.line = Number(filem[2]);
              if (filem[3]) res.column = filem[3];
              
              res.at = m[1];
              break;
          }
      }
  
      self.emit('result', res);
      
      var pendingAsserts = self._pendingAsserts();
      if (!pendingAsserts) {
          if (extra.exiting) {
              self._end();
          } else {
              nextTick(function () {
                  self._end();
              });
          }
      }
      
      if (!self._planError && pendingAsserts < 0) {
          self._planError = true;
          self.fail('plan != count', {
              expected : self._plan,
              actual : self._plan - pendingAsserts
          });
      }
  };
  
  Test.prototype.fail = function (msg, extra) {
      this._assert(false, {
          message : msg,
          operator : 'fail',
          extra : extra
      });
  };
  
  Test.prototype.pass = function (msg, extra) {
      this._assert(true, {
          message : msg,
          operator : 'pass',
          extra : extra
      });
  };
  
  Test.prototype.skip = function (msg, extra) {
      this._assert(true, {
          message : msg,
          operator : 'skip',
          skip : true,
          extra : extra
      });
  };
  
  Test.prototype.ok
  = Test.prototype['true']
  = Test.prototype.assert
  = function (value, msg, extra) {
      this._assert(value, {
          message : msg,
          operator : 'ok',
          expected : true,
          actual : value,
          extra : extra
      });
  };
  
  Test.prototype.notOk
  = Test.prototype['false']
  = Test.prototype.notok
  = function (value, msg, extra) {
      this._assert(!value, {
          message : msg,
          operator : 'notOk',
          expected : false,
          actual : value,
          extra : extra
      });
  };
  
  Test.prototype.error
  = Test.prototype.ifError
  = Test.prototype.ifErr
  = Test.prototype.iferror
  = function (err, msg, extra) {
      this._assert(!err, {
          message : defined(msg, String(err)),
          operator : 'error',
          actual : err,
          extra : extra
      });
  };
  
  Test.prototype.equal
  = Test.prototype.equals
  = Test.prototype.isEqual
  = Test.prototype.is
  = Test.prototype.strictEqual
  = Test.prototype.strictEquals
  = function (a, b, msg, extra) {
      this._assert(a === b, {
          message : defined(msg, 'should be equal'),
          operator : 'equal',
          actual : a,
          expected : b,
          extra : extra
      });
  };
  
  Test.prototype.notEqual
  = Test.prototype.notEquals
  = Test.prototype.notStrictEqual
  = Test.prototype.notStrictEquals
  = Test.prototype.isNotEqual
  = Test.prototype.isNot
  = Test.prototype.not
  = Test.prototype.doesNotEqual
  = Test.prototype.isInequal
  = function (a, b, msg, extra) {
      this._assert(a !== b, {
          message : defined(msg, 'should not be equal'),
          operator : 'notEqual',
          actual : a,
          notExpected : b,
          extra : extra
      });
  };
  
  Test.prototype.deepEqual
  = Test.prototype.deepEquals
  = Test.prototype.isEquivalent
  = Test.prototype.same
  = function (a, b, msg, extra) {
      this._assert(deepEqual(a, b, { strict: true }), {
          message : defined(msg, 'should be equivalent'),
          operator : 'deepEqual',
          actual : a,
          expected : b,
          extra : extra
      });
  };
  
  Test.prototype.deepLooseEqual
  = Test.prototype.looseEqual
  = Test.prototype.looseEquals
  = function (a, b, msg, extra) {
      this._assert(deepEqual(a, b), {
          message : defined(msg, 'should be equivalent'),
          operator : 'deepLooseEqual',
          actual : a,
          expected : b,
          extra : extra
      });
  };
  
  Test.prototype.notDeepEqual
  = Test.prototype.notEquivalent
  = Test.prototype.notDeeply
  = Test.prototype.notSame
  = Test.prototype.isNotDeepEqual
  = Test.prototype.isNotDeeply
  = Test.prototype.isNotEquivalent
  = Test.prototype.isInequivalent
  = function (a, b, msg, extra) {
      this._assert(!deepEqual(a, b, { strict: true }), {
          message : defined(msg, 'should not be equivalent'),
          operator : 'notDeepEqual',
          actual : a,
          notExpected : b,
          extra : extra
      });
  };
  
  Test.prototype.notDeepLooseEqual
  = Test.prototype.notLooseEqual
  = Test.prototype.notLooseEquals
  = function (a, b, msg, extra) {
      this._assert(!deepEqual(a, b), {
          message : defined(msg, 'should be equivalent'),
          operator : 'notDeepLooseEqual',
          actual : a,
          expected : b,
          extra : extra
      });
  };
  
  Test.prototype['throws'] = function (fn, expected, msg, extra) {
      if (typeof expected === 'string') {
          msg = expected;
          expected = undefined;
      }
  
      var caught = undefined;
  
      try {
          fn();
      } catch (err) {
          caught = { error : err };
          var message = err.message;
          delete err.message;
          err.message = message;
      }
  
      var passed = caught;
  
      if (expected instanceof RegExp) {
          passed = expected.test(caught && caught.error);
          expected = String(expected);
      }
  
      if (typeof expected === 'function' && caught) {
          passed = caught.error instanceof expected;
          caught.error = caught.error.constructor;
      }
  
      this._assert(typeof fn === 'function' && passed, {
          message : defined(msg, 'should throw'),
          operator : 'throws',
          actual : caught && caught.error,
          expected : expected,
          error: !passed && caught && caught.error,
          extra : extra
      });
  };
  
  Test.prototype.doesNotThrow = function (fn, expected, msg, extra) {
      if (typeof expected === 'string') {
          msg = expected;
          expected = undefined;
      }
      var caught = undefined;
      try {
          fn();
      }
      catch (err) {
          caught = { error : err };
      }
      this._assert(!caught, {
          message : defined(msg, 'should not throw'),
          operator : 'throws',
          actual : caught && caught.error,
          expected : expected,
          error : caught && caught.error,
          extra : extra
      });
  };
  
  Test.skip = function (name_, _opts, _cb) {
      var args = getTestArgs.apply(null, arguments);
      args.opts.skip = true;
      return Test(args.name, args.opts, args.cb);
  };
  
  // vim: set softtabstop=4 shiftwidth=4:
  
  
  }).call(this)}).call(this,"/node_modules/tape/lib")
  },{"./next_tick":112,"deep-equal":28,"defined":32,"events":9,"has":95,"inherits":97,"path":10,"string.prototype.trim":106}],115:[function(require,module,exports){
  var hasMap = typeof Map === 'function' && Map.prototype;
  var mapSizeDescriptor = Object.getOwnPropertyDescriptor && hasMap ? Object.getOwnPropertyDescriptor(Map.prototype, 'size') : null;
  var mapSize = hasMap && mapSizeDescriptor && typeof mapSizeDescriptor.get === 'function' ? mapSizeDescriptor.get : null;
  var mapForEach = hasMap && Map.prototype.forEach;
  var hasSet = typeof Set === 'function' && Set.prototype;
  var setSizeDescriptor = Object.getOwnPropertyDescriptor && hasSet ? Object.getOwnPropertyDescriptor(Set.prototype, 'size') : null;
  var setSize = hasSet && setSizeDescriptor && typeof setSizeDescriptor.get === 'function' ? setSizeDescriptor.get : null;
  var setForEach = hasSet && Set.prototype.forEach;
  
  module.exports = function inspect_ (obj, opts, depth, seen) {
      if (!opts) opts = {};
      
      var maxDepth = opts.depth === undefined ? 5 : opts.depth;
      if (depth === undefined) depth = 0;
      if (depth >= maxDepth && maxDepth > 0
      && obj && typeof obj === 'object') {
          return '[Object]';
      }
      
      if (seen === undefined) seen = [];
      else if (indexOf(seen, obj) >= 0) {
          return '[Circular]';
      }
      
      function inspect (value, from) {
          if (from) {
              seen = seen.slice();
              seen.push(from);
          }
          return inspect_(value, opts, depth + 1, seen);
      }
      
      if (typeof obj === 'string') {
          return inspectString(obj);
      }
      else if (typeof obj === 'function') {
          var name = nameOf(obj);
          return '[Function' + (name ? ': ' + name : '') + ']';
      }
      else if (obj === null) {
          return 'null';
      }
      else if (isSymbol(obj)) {
          var symString = Symbol.prototype.toString.call(obj);
          return typeof obj === 'object' ? 'Object(' + symString + ')' : symString;
      }
      else if (isElement(obj)) {
          var s = '<' + String(obj.nodeName).toLowerCase();
          var attrs = obj.attributes || [];
          for (var i = 0; i < attrs.length; i++) {
              s += ' ' + attrs[i].name + '="' + quote(attrs[i].value) + '"';
          }
          s += '>';
          if (obj.childNodes && obj.childNodes.length) s += '...';
          s += '</' + String(obj.nodeName).toLowerCase() + '>';
          return s;
      }
      else if (isArray(obj)) {
          if (obj.length === 0) return '[]';
          var xs = Array(obj.length);
          for (var i = 0; i < obj.length; i++) {
              xs[i] = has(obj, i) ? inspect(obj[i], obj) : '';
          }
          return '[ ' + xs.join(', ') + ' ]';
      }
      else if (isError(obj)) {
          var parts = [];
          for (var key in obj) {
              if (!has(obj, key)) continue;
              
              if (/[^\w$]/.test(key)) {
                  parts.push(inspect(key) + ': ' + inspect(obj[key]));
              }
              else {
                  parts.push(key + ': ' + inspect(obj[key]));
              }
          }
          if (parts.length === 0) return '[' + obj + ']';
          return '{ [' + obj + '] ' + parts.join(', ') + ' }';
      }
      else if (typeof obj === 'object' && typeof obj.inspect === 'function') {
          return obj.inspect();
      }
      else if (isMap(obj)) {
          var parts = [];
          mapForEach.call(obj, function (value, key) {
              parts.push(inspect(key, obj) + ' => ' + inspect(value, obj));
          });
          return 'Map (' + mapSize.call(obj) + ') {' + parts.join(', ') + '}';
      }
      else if (isSet(obj)) {
          var parts = [];
          setForEach.call(obj, function (value ) {
              parts.push(inspect(value, obj));
          });
          return 'Set (' + setSize.call(obj) + ') {' + parts.join(', ') + '}';
      }
      else if (typeof obj === 'object' && !isDate(obj) && !isRegExp(obj)) {
          var xs = [], keys = [];
          for (var key in obj) {
              if (has(obj, key)) keys.push(key);
          }
          keys.sort();
          for (var i = 0; i < keys.length; i++) {
              var key = keys[i];
              if (/[^\w$]/.test(key)) {
                  xs.push(inspect(key) + ': ' + inspect(obj[key], obj));
              }
              else xs.push(key + ': ' + inspect(obj[key], obj));
          }
          if (xs.length === 0) return '{}';
          return '{ ' + xs.join(', ') + ' }';
      }
      else return String(obj);
  };
  
  function quote (s) {
      return String(s).replace(/"/g, '&quot;');
  }
  
  function isArray (obj) { return toStr(obj) === '[object Array]' }
  function isDate (obj) { return toStr(obj) === '[object Date]' }
  function isRegExp (obj) { return toStr(obj) === '[object RegExp]' }
  function isError (obj) { return toStr(obj) === '[object Error]' }
  function isSymbol (obj) { return toStr(obj) === '[object Symbol]' }
  
  var hasOwn = Object.prototype.hasOwnProperty || function (key) { return key in this; };
  function has (obj, key) {
      return hasOwn.call(obj, key);
  }
  
  function toStr (obj) {
      return Object.prototype.toString.call(obj);
  }
  
  function nameOf (f) {
      if (f.name) return f.name;
      var m = f.toString().match(/^function\s*([\w$]+)/);
      if (m) return m[1];
  }
  
  function indexOf (xs, x) {
      if (xs.indexOf) return xs.indexOf(x);
      for (var i = 0, l = xs.length; i < l; i++) {
          if (xs[i] === x) return i;
      }
      return -1;
  }
  
  function isMap (x) {
      if (!mapSize) {
          return false;
      }
      try {
          mapSize.call(x);
          return true;
      } catch (e) {}
      return false;
  }
  
  function isSet (x) {
      if (!setSize) {
          return false;
      }
      try {
          setSize.call(x);
          return true;
      } catch (e) {}
      return false;
  }
  
  function isElement (x) {
      if (!x || typeof x !== 'object') return false;
      if (typeof HTMLElement !== 'undefined' && x instanceof HTMLElement) {
          return true;
      }
      return typeof x.nodeName === 'string'
          && typeof x.getAttribute === 'function'
      ;
  }
  
  function inspectString (str) {
      var s = str.replace(/(['\\])/g, '\\$1').replace(/[\x00-\x1f]/g, lowbyte);
      return "'" + s + "'";
      
      function lowbyte (c) {
          var n = c.charCodeAt(0);
          var x = { 8: 'b', 9: 't', 10: 'n', 12: 'f', 13: 'r' }[n];
          if (x) return '\\' + x;
          return '\\x' + (n < 0x10 ? '0' : '') + n.toString(16);
      }
  }
  
  },{}],116:[function(require,module,exports){
  (function (process){(function (){
  var Stream = require('stream')
  
  // through
  //
  // a stream that does nothing but re-emit the input.
  // useful for aggregating a series of changing but not ending streams into one stream)
  
  exports = module.exports = through
  through.through = through
  
  //create a readable writable stream.
  
  function through (write, end, opts) {
    write = write || function (data) { this.queue(data) }
    end = end || function () { this.queue(null) }
  
    var ended = false, destroyed = false, buffer = [], _ended = false
    var stream = new Stream()
    stream.readable = stream.writable = true
    stream.paused = false
  
  //  stream.autoPause   = !(opts && opts.autoPause   === false)
    stream.autoDestroy = !(opts && opts.autoDestroy === false)
  
    stream.write = function (data) {
      write.call(this, data)
      return !stream.paused
    }
  
    function drain() {
      while(buffer.length && !stream.paused) {
        var data = buffer.shift()
        if(null === data)
          return stream.emit('end')
        else
          stream.emit('data', data)
      }
    }
  
    stream.queue = stream.push = function (data) {
  //    console.error(ended)
      if(_ended) return stream
      if(data === null) _ended = true
      buffer.push(data)
      drain()
      return stream
    }
  
    //this will be registered as the first 'end' listener
    //must call destroy next tick, to make sure we're after any
    //stream piped from here.
    //this is only a problem if end is not emitted synchronously.
    //a nicer way to do this is to make sure this is the last listener for 'end'
  
    stream.on('end', function () {
      stream.readable = false
      if(!stream.writable && stream.autoDestroy)
        process.nextTick(function () {
          stream.destroy()
        })
    })
  
    function _end () {
      stream.writable = false
      end.call(stream)
      if(!stream.readable && stream.autoDestroy)
        stream.destroy()
    }
  
    stream.end = function (data) {
      if(ended) return
      ended = true
      if(arguments.length) stream.write(data)
      _end() // will emit or queue
      return stream
    }
  
    stream.destroy = function () {
      if(destroyed) return
      destroyed = true
      ended = true
      buffer.length = 0
      stream.writable = stream.readable = false
      stream.emit('close')
      return stream
    }
  
    stream.pause = function () {
      if(stream.paused) return
      stream.paused = true
      return stream
    }
  
    stream.resume = function () {
      if(stream.paused) {
        stream.paused = false
        stream.emit('resume')
      }
      drain()
      //may have become paused again,
      //as drain emits 'data'.
      if(!stream.paused)
        stream.emit('drain')
      return stream
    }
    return stream
  }
  
  
  }).call(this)}).call(this,require('_process'))
  },{"_process":102,"stream":11}],117:[function(require,module,exports){
  (function (setImmediate,clearImmediate){(function (){
  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)}).call(this,require("timers").setImmediate,require("timers").clearImmediate)
  },{"process/browser.js":102,"timers":117}],118:[function(require,module,exports){
  (function (global){(function (){
  
  /**
   * Module exports.
   */
  
  module.exports = deprecate;
  
  /**
   * Mark that a method should not be used.
   * Returns a modified function which warns once by default.
   *
   * If `localStorage.noDeprecation = true` is set, then it is a no-op.
   *
   * If `localStorage.throwDeprecation = true` is set, then deprecated functions
   * will throw an Error when invoked.
   *
   * If `localStorage.traceDeprecation = true` is set, then deprecated functions
   * will invoke `console.trace()` instead of `console.error()`.
   *
   * @param {Function} fn - the function to deprecate
   * @param {String} msg - the string to print to the console when `fn` is invoked
   * @returns {Function} a new "deprecated" version of `fn`
   * @api public
   */
  
  function deprecate (fn, msg) {
    if (config('noDeprecation')) {
      return fn;
    }
  
    var warned = false;
    function deprecated() {
      if (!warned) {
        if (config('throwDeprecation')) {
          throw new Error(msg);
        } else if (config('traceDeprecation')) {
          console.trace(msg);
        } else {
          console.warn(msg);
        }
        warned = true;
      }
      return fn.apply(this, arguments);
    }
  
    return deprecated;
  }
  
  /**
   * Checks `localStorage` for boolean values for the given `name`.
   *
   * @param {String} name
   * @returns {Boolean}
   * @api private
   */
  
  function config (name) {
    // accessing global.localStorage can trigger a DOMException in sandboxed iframes
    try {
      if (!global.localStorage) return false;
    } catch (_) {
      return false;
    }
    var val = global.localStorage[name];
    if (null == val) return false;
    return String(val).toLowerCase() === 'true';
  }
  
  }).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{}]},{},[4]);
  