Fix for Load/Save mission not working (#783)

* Offline missions (with FC disconnected) are now available for load and save to file.
Supports XML file format, should be compatible enough with other software

* removed default file name

* removed code in early stage of future developments

* code style and fc buttons

* map resize handling

* fix include nwdialog and fs packages

* xml2js lib with all dependencies in a single file

1 files changed, 10649 insertions, 0 deletions

diff --git a/js/libraries/bundle_xml2js.js b/js/libraries/bundle_xml2js.js
new file mode 100644
index 00000000..64b71a30
--- /dev/null
+++ b/js/libraries/bundle_xml2js.js
@@ -0,0 +1,10649 @@
+(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
+'use strict'
+
+exports.byteLength = byteLength
+exports.toByteArray = toByteArray
+exports.fromByteArray = fromByteArray
+
+var lookup = []
+var revLookup = []
+var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
+
+var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
+for (var i = 0, len = code.length; i < len; ++i) {
+  lookup[i] = code[i]
+  revLookup[code.charCodeAt(i)] = i
+}
+
+// Support decoding URL-safe base64 strings, as Node.js does.
+// See: https://en.wikipedia.org/wiki/Base64#URL_applications
+revLookup['-'.charCodeAt(0)] = 62
+revLookup['_'.charCodeAt(0)] = 63
+
+function getLens (b64) {
+  var len = b64.length
+
+  if (len % 4 > 0) {
+    throw new Error('Invalid string. Length must be a multiple of 4')
+  }
+
+  // Trim off extra bytes after placeholder bytes are found
+  // See: https://github.com/beatgammit/base64-js/issues/42
+  var validLen = b64.indexOf('=')
+  if (validLen === -1) validLen = len
+
+  var placeHoldersLen = validLen === len
+    ? 0
+    : 4 - (validLen % 4)
+
+  return [validLen, placeHoldersLen]
+}
+
+// base64 is 4/3 + up to two characters of the original data
+function byteLength (b64) {
+  var lens = getLens(b64)
+  var validLen = lens[0]
+  var placeHoldersLen = lens[1]
+  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
+}
+
+function _byteLength (b64, validLen, placeHoldersLen) {
+  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
+}
+
+function toByteArray (b64) {
+  var tmp
+  var lens = getLens(b64)
+  var validLen = lens[0]
+  var placeHoldersLen = lens[1]
+
+  var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))
+
+  var curByte = 0
+
+  // if there are placeholders, only get up to the last complete 4 chars
+  var len = placeHoldersLen > 0
+    ? validLen - 4
+    : validLen
+
+  for (var i = 0; i < len; i += 4) {
+    tmp =
+      (revLookup[b64.charCodeAt(i)] << 18) |
+      (revLookup[b64.charCodeAt(i + 1)] << 12) |
+      (revLookup[b64.charCodeAt(i + 2)] << 6) |
+      revLookup[b64.charCodeAt(i + 3)]
+    arr[curByte++] = (tmp >> 16) & 0xFF
+    arr[curByte++] = (tmp >> 8) & 0xFF
+    arr[curByte++] = tmp & 0xFF
+  }
+
+  if (placeHoldersLen === 2) {
+    tmp =
+      (revLookup[b64.charCodeAt(i)] << 2) |
+      (revLookup[b64.charCodeAt(i + 1)] >> 4)
+    arr[curByte++] = tmp & 0xFF
+  }
+
+  if (placeHoldersLen === 1) {
+    tmp =
+      (revLookup[b64.charCodeAt(i)] << 10) |
+      (revLookup[b64.charCodeAt(i + 1)] << 4) |
+      (revLookup[b64.charCodeAt(i + 2)] >> 2)
+    arr[curByte++] = (tmp >> 8) & 0xFF
+    arr[curByte++] = tmp & 0xFF
+  }
+
+  return arr
+}
+
+function tripletToBase64 (num) {
+  return lookup[num >> 18 & 0x3F] +
+    lookup[num >> 12 & 0x3F] +
+    lookup[num >> 6 & 0x3F] +
+    lookup[num & 0x3F]
+}
+
+function encodeChunk (uint8, start, end) {
+  var tmp
+  var output = []
+  for (var i = start; i < end; i += 3) {
+    tmp =
+      ((uint8[i] << 16) & 0xFF0000) +
+      ((uint8[i + 1] << 8) & 0xFF00) +
+      (uint8[i + 2] & 0xFF)
+    output.push(tripletToBase64(tmp))
+  }
+  return output.join('')
+}
+
+function fromByteArray (uint8) {
+  var tmp
+  var len = uint8.length
+  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
+  var parts = []
+  var maxChunkLength = 16383 // must be multiple of 3
+
+  // go through the array every three bytes, we'll deal with trailing stuff later
+  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
+    parts.push(encodeChunk(
+      uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)
+    ))
+  }
+
+  // pad the end with zeros, but make sure to not forget the extra bytes
+  if (extraBytes === 1) {
+    tmp = uint8[len - 1]
+    parts.push(
+      lookup[tmp >> 2] +
+      lookup[(tmp << 4) & 0x3F] +
+      '=='
+    )
+  } else if (extraBytes === 2) {
+    tmp = (uint8[len - 2] << 8) + uint8[len - 1]
+    parts.push(
+      lookup[tmp >> 10] +
+      lookup[(tmp >> 4) & 0x3F] +
+      lookup[(tmp << 2) & 0x3F] +
+      '='
+    )
+  }
+
+  return parts.join('')
+}
+
+},{}],2:[function(require,module,exports){
+
+},{}],3:[function(require,module,exports){
+(function (Buffer){
+/*!
+ * 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,require("buffer").Buffer)
+},{"base64-js":1,"buffer":3,"ieee754":6}],4:[function(require,module,exports){
+(function (Buffer){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+// NOTE: These type checking functions intentionally don't use `instanceof`
+// because it is fragile and can be easily faked with `Object.create()`.
+
+function isArray(arg) {
+  if (Array.isArray) {
+    return Array.isArray(arg);
+  }
+  return objectToString(arg) === '[object Array]';
+}
+exports.isArray = isArray;
+
+function isBoolean(arg) {
+  return typeof arg === 'boolean';
+}
+exports.isBoolean = isBoolean;
+
+function isNull(arg) {
+  return arg === null;
+}
+exports.isNull = isNull;
+
+function isNullOrUndefined(arg) {
+  return arg == null;
+}
+exports.isNullOrUndefined = isNullOrUndefined;
+
+function isNumber(arg) {
+  return typeof arg === 'number';
+}
+exports.isNumber = isNumber;
+
+function isString(arg) {
+  return typeof arg === 'string';
+}
+exports.isString = isString;
+
+function isSymbol(arg) {
+  return typeof arg === 'symbol';
+}
+exports.isSymbol = isSymbol;
+
+function isUndefined(arg) {
+  return arg === void 0;
+}
+exports.isUndefined = isUndefined;
+
+function isRegExp(re) {
+  return objectToString(re) === '[object RegExp]';
+}
+exports.isRegExp = isRegExp;
+
+function isObject(arg) {
+  return typeof arg === 'object' && arg !== null;
+}
+exports.isObject = isObject;
+
+function isDate(d) {
+  return objectToString(d) === '[object Date]';
+}
+exports.isDate = isDate;
+
+function isError(e) {
+  return (objectToString(e) === '[object Error]' || e instanceof Error);
+}
+exports.isError = isError;
+
+function isFunction(arg) {
+  return typeof arg === 'function';
+}
+exports.isFunction = isFunction;
+
+function isPrimitive(arg) {
+  return arg === null ||
+         typeof arg === 'boolean' ||
+         typeof arg === 'number' ||
+         typeof arg === 'string' ||
+         typeof arg === 'symbol' ||  // ES6 symbol
+         typeof arg === 'undefined';
+}
+exports.isPrimitive = isPrimitive;
+
+exports.isBuffer = Buffer.isBuffer;
+
+function objectToString(o) {
+  return Object.prototype.toString.call(o);
+}
+
+}).call(this,{"isBuffer":require("../../is-buffer/index.js")})
+},{"../../is-buffer/index.js":8}],5:[function(require,module,exports){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+var objectCreate = Object.create || objectCreatePolyfill
+var objectKeys = Object.keys || objectKeysPolyfill
+var bind = Function.prototype.bind || functionBindPolyfill
+
+function EventEmitter() {
+  if (!this._events || !Object.prototype.hasOwnProperty.call(this, '_events')) {
+    this._events = objectCreate(null);
+    this._eventsCount = 0;
+  }
+
+  this._maxListeners = this._maxListeners || undefined;
+}
+module.exports = EventEmitter;
+
+// Backwards-compat with node 0.10.x
+EventEmitter.EventEmitter = EventEmitter;
+
+EventEmitter.prototype._events = undefined;
+EventEmitter.prototype._maxListeners = undefined;
+
+// By default EventEmitters will print a warning if more than 10 listeners are
+// added to it. This is a useful default which helps finding memory leaks.
+var defaultMaxListeners = 10;
+
+var hasDefineProperty;
+try {
+  var o = {};
+  if (Object.defineProperty) Object.defineProperty(o, 'x', { value: 0 });
+  hasDefineProperty = o.x === 0;
+} catch (err) { hasDefineProperty = false }
+if (hasDefineProperty) {
+  Object.defineProperty(EventEmitter, 'defaultMaxListeners', {
+    enumerable: true,
+    get: function() {
+      return defaultMaxListeners;
+    },
+    set: function(arg) {
+      // check whether the input is a positive number (whose value is zero or
+      // greater and not a NaN).
+      if (typeof arg !== 'number' || arg < 0 || arg !== arg)
+        throw new TypeError('"defaultMaxListeners" must be a positive number');
+      defaultMaxListeners = arg;
+    }
+  });
+} else {
+  EventEmitter.defaultMaxListeners = defaultMaxListeners;
+}
+
+// Obviously not all Emitters should be limited to 10. This function allows
+// that to be increased. Set to zero for unlimited.
+EventEmitter.prototype.setMaxListeners = function setMaxListeners(n) {
+  if (typeof n !== 'number' || n < 0 || isNaN(n))
+    throw new TypeError('"n" argument must be a positive number');
+  this._maxListeners = n;
+  return this;
+};
+
+function $getMaxListeners(that) {
+  if (that._maxListeners === undefined)
+    return EventEmitter.defaultMaxListeners;
+  return that._maxListeners;
+}
+
+EventEmitter.prototype.getMaxListeners = function getMaxListeners() {
+  return $getMaxListeners(this);
+};
+
+// These standalone emit* functions are used to optimize calling of event
+// handlers for fast cases because emit() itself often has a variable number of
+// arguments and can be deoptimized because of that. These functions always have
+// the same number of arguments and thus do not get deoptimized, so the code
+// inside them can execute faster.
+function emitNone(handler, isFn, self) {
+  if (isFn)
+    handler.call(self);
+  else {
+    var len = handler.length;
+    var listeners = arrayClone(handler, len);
+    for (var i = 0; i < len; ++i)
+      listeners[i].call(self);
+  }
+}
+function emitOne(handler, isFn, self, arg1) {
+  if (isFn)
+    handler.call(self, arg1);
+  else {
+    var len = handler.length;
+    var listeners = arrayClone(handler, len);
+    for (var i = 0; i < len; ++i)
+      listeners[i].call(self, arg1);
+  }
+}
+function emitTwo(handler, isFn, self, arg1, arg2) {
+  if (isFn)
+    handler.call(self, arg1, arg2);
+  else {
+    var len = handler.length;
+    var listeners = arrayClone(handler, len);
+    for (var i = 0; i < len; ++i)
+      listeners[i].call(self, arg1, arg2);
+  }
+}
+function emitThree(handler, isFn, self, arg1, arg2, arg3) {
+  if (isFn)
+    handler.call(self, arg1, arg2, arg3);
+  else {
+    var len = handler.length;
+    var listeners = arrayClone(handler, len);
+    for (var i = 0; i < len; ++i)
+      listeners[i].call(self, arg1, arg2, arg3);
+  }
+}
+
+function emitMany(handler, isFn, self, args) {
+  if (isFn)
+    handler.apply(self, args);
+  else {
+    var len = handler.length;
+    var listeners = arrayClone(handler, len);
+    for (var i = 0; i < len; ++i)
+      listeners[i].apply(self, args);
+  }
+}
+
+EventEmitter.prototype.emit = function emit(type) {
+  var er, handler, len, args, i, events;
+  var doError = (type === 'error');
+
+  events = this._events;
+  if (events)
+    doError = (doError && events.error == null);
+  else if (!doError)
+    return false;
+
+  // If there is no 'error' event listener then throw.
+  if (doError) {
+    if (arguments.length > 1)
+      er = arguments[1];
+    if (er instanceof Error) {
+      throw er; // Unhandled 'error' event
+    } else {
+      // At least give some kind of context to the user
+      var err = new Error('Unhandled "error" event. (' + er + ')');
+      err.context = er;
+      throw err;
+    }
+    return false;
+  }
+
+  handler = events[type];
+
+  if (!handler)
+    return false;
+
+  var isFn = typeof handler === 'function';
+  len = arguments.length;
+  switch (len) {
+      // fast cases
+    case 1:
+      emitNone(handler, isFn, this);
+      break;
+    case 2:
+      emitOne(handler, isFn, this, arguments[1]);
+      break;
+    case 3:
+      emitTwo(handler, isFn, this, arguments[1], arguments[2]);
+      break;
+    case 4:
+      emitThree(handler, isFn, this, arguments[1], arguments[2], arguments[3]);
+      break;
+      // slower
+    default:
+      args = new Array(len - 1);
+      for (i = 1; i < len; i++)
+        args[i - 1] = arguments[i];
+      emitMany(handler, isFn, this, args);
+  }
+
+  return true;
+};
+
+function _addListener(target, type, listener, prepend) {
+  var m;
+  var events;
+  var existing;
+
+  if (typeof listener !== 'function')
+    throw new TypeError('"listener" argument must be a function');
+
+  events = target._events;
+  if (!events) {
+    events = target._events = objectCreate(null);
+    target._eventsCount = 0;
+  } else {
+    // To avoid recursion in the case that type === "newListener"! Before
+    // adding it to the listeners, first emit "newListener".
+    if (events.newListener) {
+      target.emit('newListener', type,
+          listener.listener ? listener.listener : listener);
+
+      // Re-assign `events` because a newListener handler could have caused the
+      // this._events to be assigned to a new object
+      events = target._events;
+    }
+    existing = events[type];
+  }
+
+  if (!existing) {
+    // Optimize the case of one listener. Don't need the extra array object.
+    existing = events[type] = listener;
+    ++target._eventsCount;
+  } else {
+    if (typeof existing === 'function') {
+      // Adding the second element, need to change to array.
+      existing = events[type] =
+          prepend ? [listener, existing] : [existing, listener];
+    } else {
+      // If we've already got an array, just append.
+      if (prepend) {
+        existing.unshift(listener);
+      } else {
+        existing.push(listener);
+      }
+    }
+
+    // Check for listener leak
+    if (!existing.warned) {
+      m = $getMaxListeners(target);
+      if (m && m > 0 && existing.length > m) {
+        existing.warned = true;
+        var w = new Error('Possible EventEmitter memory leak detected. ' +
+            existing.length + ' "' + String(type) + '" listeners ' +
+            'added. Use emitter.setMaxListeners() to ' +
+            'increase limit.');
+        w.name = 'MaxListenersExceededWarning';
+        w.emitter = target;
+        w.type = type;
+        w.count = existing.length;
+        if (typeof console === 'object' && console.warn) {
+          console.warn('%s: %s', w.name, w.message);
+        }
+      }
+    }
+  }
+
+  return target;
+}
+
+EventEmitter.prototype.addListener = function addListener(type, listener) {
+  return _addListener(this, type, listener, false);
+};
+
+EventEmitter.prototype.on = EventEmitter.prototype.addListener;
+
+EventEmitter.prototype.prependListener =
+    function prependListener(type, listener) {
+      return _addListener(this, type, listener, true);
+    };
+
+function onceWrapper() {
+  if (!this.fired) {
+    this.target.removeListener(this.type, this.wrapFn);
+    this.fired = true;
+    switch (arguments.length) {
+      case 0:
+        return this.listener.call(this.target);
+      case 1:
+        return this.listener.call(this.target, arguments[0]);
+      case 2:
+        return this.listener.call(this.target, arguments[0], arguments[1]);
+      case 3:
+        return this.listener.call(this.target, arguments[0], arguments[1],
+            arguments[2]);
+      default:
+        var args = new Array(arguments.length);
+        for (var i = 0; i < args.length; ++i)
+          args[i] = arguments[i];
+        this.listener.apply(this.target, args);
+    }
+  }
+}
+
+function _onceWrap(target, type, listener) {
+  var state = { fired: false, wrapFn: undefined, target: target, type: type, listener: listener };
+  var wrapped = bind.call(onceWrapper, state);
+  wrapped.listener = listener;
+  state.wrapFn = wrapped;
+  return wrapped;
+}
+
+EventEmitter.prototype.once = function once(type, listener) {
+  if (typeof listener !== 'function')
+    throw new TypeError('"listener" argument must be a function');
+  this.on(type, _onceWrap(this, type, listener));
+  return this;
+};
+
+EventEmitter.prototype.prependOnceListener =
+    function prependOnceListener(type, listener) {
+      if (typeof listener !== 'function')
+        throw new TypeError('"listener" argument must be a function');
+      this.prependListener(type, _onceWrap(this, type, listener));
+      return this;
+    };
+
+// Emits a 'removeListener' event if and only if the listener was removed.
+EventEmitter.prototype.removeListener =
+    function removeListener(type, listener) {
+      var list, events, position, i, originalListener;
+
+      if (typeof listener !== 'function')
+        throw new TypeError('"listener" argument must be a function');
+
+      events = this._events;
+      if (!events)
+        return this;
+
+      list = events[type];
+      if (!list)
+        return this;
+
+      if (list === listener || list.listener === listener) {
+        if (--this._eventsCount === 0)
+          this._events = objectCreate(null);
+        else {
+          delete events[type];
+          if (events.removeListener)
+            this.emit('removeListener', type, list.listener || listener);
+        }
+      } else if (typeof list !== 'function') {
+        position = -1;
+
+        for (i = list.length - 1; i >= 0; i--) {
+          if (list[i] === listener || list[i].listener === listener) {
+            originalListener = list[i].listener;
+            position = i;
+            break;
+          }
+        }
+
+        if (position < 0)
+          return this;
+
+        if (position === 0)
+          list.shift();
+        else
+          spliceOne(list, position);
+
+        if (list.length === 1)
+          events[type] = list[0];
+
+        if (events.removeListener)
+          this.emit('removeListener', type, originalListener || listener);
+      }
+
+      return this;
+    };
+
+EventEmitter.prototype.removeAllListeners =
+    function removeAllListeners(type) {
+      var listeners, events, i;
+
+      events = this._events;
+      if (!events)
+        return this;
+
+      // not listening for removeListener, no need to emit
+      if (!events.removeListener) {
+        if (arguments.length === 0) {
+          this._events = objectCreate(null);
+          this._eventsCount = 0;
+        } else if (events[type]) {
+          if (--this._eventsCount === 0)
+            this._events = objectCreate(null);
+          else
+            delete events[type];
+        }
+        return this;
+      }
+
+      // emit removeListener for all listeners on all events
+      if (arguments.length === 0) {
+        var keys = objectKeys(events);
+        var key;
+        for (i = 0; i < keys.length; ++i) {
+          key = keys[i];
+          if (key === 'removeListener') continue;
+          this.removeAllListeners(key);
+        }
+        this.removeAllListeners('removeListener');
+        this._events = objectCreate(null);
+        this._eventsCount = 0;
+        return this;
+      }
+
+      listeners = events[type];
+
+      if (typeof listeners === 'function') {
+        this.removeListener(type, listeners);
+      } else if (listeners) {
+        // LIFO order
+        for (i = listeners.length - 1; i >= 0; i--) {
+          this.removeListener(type, listeners[i]);
+        }
+      }
+
+      return this;
+    };
+
+function _listeners(target, type, unwrap) {
+  var events = target._events;
+
+  if (!events)
+    return [];
+
+  var evlistener = events[type];
+  if (!evlistener)
+    return [];
+
+  if (typeof evlistener === 'function')
+    return unwrap ? [evlistener.listener || evlistener] : [evlistener];
+
+  return unwrap ? unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length);
+}
+
+EventEmitter.prototype.listeners = function listeners(type) {
+  return _listeners(this, type, true);
+};
+
+EventEmitter.prototype.rawListeners = function rawListeners(type) {
+  return _listeners(this, type, false);
+};
+
+EventEmitter.listenerCount = function(emitter, type) {
+  if (typeof emitter.listenerCount === 'function') {
+    return emitter.listenerCount(type);
+  } else {
+    return listenerCount.call(emitter, type);
+  }
+};
+
+EventEmitter.prototype.listenerCount = listenerCount;
+function listenerCount(type) {
+  var events = this._events;
+
+  if (events) {
+    var evlistener = events[type];
+
+    if (typeof evlistener === 'function') {
+      return 1;
+    } else if (evlistener) {
+      return evlistener.length;
+    }
+  }
+
+  return 0;
+}
+
+EventEmitter.prototype.eventNames = function eventNames() {
+  return this._eventsCount > 0 ? Reflect.ownKeys(this._events) : [];
+};
+
+// About 1.5x faster than the two-arg version of Array#splice().
+function spliceOne(list, index) {
+  for (var i = index, k = i + 1, n = list.length; k < n; i += 1, k += 1)
+    list[i] = list[k];
+  list.pop();
+}
+
+function arrayClone(arr, n) {
+  var copy = new Array(n);
+  for (var i = 0; i < n; ++i)
+    copy[i] = arr[i];
+  return copy;
+}
+
+function unwrapListeners(arr) {
+  var ret = new Array(arr.length);
+  for (var i = 0; i < ret.length; ++i) {
+    ret[i] = arr[i].listener || arr[i];
+  }
+  return ret;
+}
+
+function objectCreatePolyfill(proto) {
+  var F = function() {};
+  F.prototype = proto;
+  return new F;
+}
+function objectKeysPolyfill(obj) {
+  var keys = [];
+  for (var k in obj) if (Object.prototype.hasOwnProperty.call(obj, k)) {
+    keys.push(k);
+  }
+  return k;
+}
+function functionBindPolyfill(context) {
+  var fn = this;
+  return function () {
+    return fn.apply(context, arguments);
+  };
+}
+
+},{}],6:[function(require,module,exports){
+exports.read = function (buffer, offset, isLE, mLen, nBytes) {
+  var e, m
+  var eLen = (nBytes * 8) - mLen - 1
+  var eMax = (1 << eLen) - 1
+  var eBias = eMax >> 1
+  var nBits = -7
+  var i = isLE ? (nBytes - 1) : 0
+  var d = isLE ? -1 : 1
+  var s = buffer[offset + i]
+
+  i += d
+
+  e = s & ((1 << (-nBits)) - 1)
+  s >>= (-nBits)
+  nBits += eLen
+  for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}
+
+  m = e & ((1 << (-nBits)) - 1)
+  e >>= (-nBits)
+  nBits += mLen
+  for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}
+
+  if (e === 0) {
+    e = 1 - eBias
+  } else if (e === eMax) {
+    return m ? NaN : ((s ? -1 : 1) * Infinity)
+  } else {
+    m = m + Math.pow(2, mLen)
+    e = e - eBias
+  }
+  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
+}
+
+exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
+  var e, m, c
+  var eLen = (nBytes * 8) - mLen - 1
+  var eMax = (1 << eLen) - 1
+  var eBias = eMax >> 1
+  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
+  var i = isLE ? 0 : (nBytes - 1)
+  var d = isLE ? 1 : -1
+  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
+
+  value = Math.abs(value)
+
+  if (isNaN(value) || value === Infinity) {
+    m = isNaN(value) ? 1 : 0
+    e = eMax
+  } else {
+    e = Math.floor(Math.log(value) / Math.LN2)
+    if (value * (c = Math.pow(2, -e)) < 1) {
+      e--
+      c *= 2
+    }
+    if (e + eBias >= 1) {
+      value += rt / c
+    } else {
+      value += rt * Math.pow(2, 1 - eBias)
+    }
+    if (value * c >= 2) {
+      e++
+      c /= 2
+    }
+
+    if (e + eBias >= eMax) {
+      m = 0
+      e = eMax
+    } else if (e + eBias >= 1) {
+      m = ((value * c) - 1) * Math.pow(2, mLen)
+      e = e + eBias
+    } else {
+      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
+      e = 0
+    }
+  }
+
+  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
+
+  e = (e << mLen) | m
+  eLen += mLen
+  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
+
+  buffer[offset + i - d] |= s * 128
+}
+
+},{}],7:[function(require,module,exports){
+if (typeof Object.create === 'function') {
+  // implementation from standard node.js 'util' module
+  module.exports = function inherits(ctor, superCtor) {
+    ctor.super_ = superCtor
+    ctor.prototype = Object.create(superCtor.prototype, {
+      constructor: {
+        value: ctor,
+        enumerable: false,
+        writable: true,
+        configurable: true
+      }
+    });
+  };
+} else {
+  // old school shim for old browsers
+  module.exports = function inherits(ctor, superCtor) {
+    ctor.super_ = superCtor
+    var TempCtor = function () {}
+    TempCtor.prototype = superCtor.prototype
+    ctor.prototype = new TempCtor()
+    ctor.prototype.constructor = ctor
+  }
+}
+
+},{}],8:[function(require,module,exports){
+/*!
+ * Determine if an object is a Buffer
+ *
+ * @author   Feross Aboukhadijeh <https://feross.org>
+ * @license  MIT
+ */
+
+// The _isBuffer check is for Safari 5-7 support, because it's missing
+// Object.prototype.constructor. Remove this eventually
+module.exports = function (obj) {
+  return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
+}
+
+function isBuffer (obj) {
+  return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
+}
+
+// For Node v0.10 support. Remove this eventually.
+function isSlowBuffer (obj) {
+  return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
+}
+
+},{}],9:[function(require,module,exports){
+var toString = {}.toString;
+
+module.exports = Array.isArray || function (arr) {
+  return toString.call(arr) == '[object Array]';
+};
+
+},{}],10:[function(require,module,exports){
+(function (process){
+'use strict';
+
+if (!process.version ||
+    process.version.indexOf('v0.') === 0 ||
+    process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {
+  module.exports = { nextTick: nextTick };
+} else {
+  module.exports = process
+}
+
+function nextTick(fn, arg1, arg2, arg3) {
+  if (typeof fn !== 'function') {
+    throw new TypeError('"callback" argument must be a function');
+  }
+  var len = arguments.length;
+  var args, i;
+  switch (len) {
+  case 0:
+  case 1:
+    return process.nextTick(fn);
+  case 2:
+    return process.nextTick(function afterTickOne() {
+      fn.call(null, arg1);
+    });
+  case 3:
+    return process.nextTick(function afterTickTwo() {
+      fn.call(null, arg1, arg2);
+    });
+  case 4:
+    return process.nextTick(function afterTickThree() {
+      fn.call(null, arg1, arg2, arg3);
+    });
+  default:
+    args = new Array(len - 1);
+    i = 0;
+    while (i < args.length) {
+      args[i++] = arguments[i];
+    }
+    return process.nextTick(function afterTick() {
+      fn.apply(null, args);
+    });
+  }
+}
+
+
+}).call(this,require('_process'))
+},{"_process":11}],11:[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; };
+
+},{}],12:[function(require,module,exports){
+module.exports = require('./lib/_stream_duplex.js');
+
+},{"./lib/_stream_duplex.js":13}],13:[function(require,module,exports){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+// a duplex stream is just a stream that is both readable and writable.
+// Since JS doesn't have multiple prototypal inheritance, this class
+// prototypally inherits from Readable, and then parasitically from
+// Writable.
+
+'use strict';
+
+/*<replacement>*/
+
+var pna = require('process-nextick-args');
+/*</replacement>*/
+
+/*<replacement>*/
+var objectKeys = Object.keys || function (obj) {
+  var keys = [];
+  for (var key in obj) {
+    keys.push(key);
+  }return keys;
+};
+/*</replacement>*/
+
+module.exports = Duplex;
+
+/*<replacement>*/
+var util = require('core-util-is');
+util.inherits = require('inherits');
+/*</replacement>*/
+
+var Readable = require('./_stream_readable');
+var Writable = require('./_stream_writable');
+
+util.inherits(Duplex, Readable);
+
+{
+  // avoid scope creep, the keys array can then be collected
+  var keys = objectKeys(Writable.prototype);
+  for (var v = 0; v < keys.length; v++) {
+    var method = keys[v];
+    if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
+  }
+}
+
+function Duplex(options) {
+  if (!(this instanceof Duplex)) return new Duplex(options);
+
+  Readable.call(this, options);
+  Writable.call(this, options);
+
+  if (options && options.readable === false) this.readable = false;
+
+  if (options && options.writable === false) this.writable = false;
+
+  this.allowHalfOpen = true;
+  if (options && options.allowHalfOpen === false) this.allowHalfOpen = false;
+
+  this.once('end', onend);
+}
+
+Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', {
+  // making it explicit this property is not enumerable
+  // because otherwise some prototype manipulation in
+  // userland will fail
+  enumerable: false,
+  get: function () {
+    return this._writableState.highWaterMark;
+  }
+});
+
+// the no-half-open enforcer
+function onend() {
+  // if we allow half-open state, or if the writable side ended,
+  // then we're ok.
+  if (this.allowHalfOpen || this._writableState.ended) return;
+
+  // no more data can be written.
+  // But allow more writes to happen in this tick.
+  pna.nextTick(onEndNT, this);
+}
+
+function onEndNT(self) {
+  self.end();
+}
+
+Object.defineProperty(Duplex.prototype, 'destroyed', {
+  get: function () {
+    if (this._readableState === undefined || this._writableState === undefined) {
+      return false;
+    }
+    return this._readableState.destroyed && this._writableState.destroyed;
+  },
+  set: function (value) {
+    // we ignore the value if the stream
+    // has not been initialized yet
+    if (this._readableState === undefined || this._writableState === undefined) {
+      return;
+    }
+
+    // backward compatibility, the user is explicitly
+    // managing destroyed
+    this._readableState.destroyed = value;
+    this._writableState.destroyed = value;
+  }
+});
+
+Duplex.prototype._destroy = function (err, cb) {
+  this.push(null);
+  this.end();
+
+  pna.nextTick(cb, err);
+};
+},{"./_stream_readable":15,"./_stream_writable":17,"core-util-is":4,"inherits":7,"process-nextick-args":10}],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');
+
+/*<replacement>*/
+var util = require('core-util-is');
+util.inherits = require('inherits');
+/*</replacement>*/
+
+util.inherits(PassThrough, Transform);
+
+function PassThrough(options) {
+  if (!(this instanceof PassThrough)) return new PassThrough(options);
+
+  Transform.call(this, options);
+}
+
+PassThrough.prototype._transform = function (chunk, encoding, cb) {
+  cb(null, chunk);
+};
+},{"./_stream_transform":16,"core-util-is":4,"inherits":7}],15:[function(require,module,exports){
+(function (process,global){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+'use strict';
+
+/*<replacement>*/
+
+var pna = require('process-nextick-args');
+/*</replacement>*/
+
+module.exports = Readable;
+
+/*<replacement>*/
+var isArray = require('isarray');
+/*</replacement>*/
+
+/*<replacement>*/
+var Duplex;
+/*</replacement>*/
+
+Readable.ReadableState = ReadableState;
+
+/*<replacement>*/
+var EE = require('events').EventEmitter;
+
+var EElistenerCount = function (emitter, type) {
+  return emitter.listeners(type).length;
+};
+/*</replacement>*/
+
+/*<replacement>*/
+var Stream = require('./internal/streams/stream');
+/*</replacement>*/
+
+/*<replacement>*/
+
+var Buffer = require('safe-buffer').Buffer;
+var OurUint8Array = global.Uint8Array || function () {};
+function _uint8ArrayToBuffer(chunk) {
+  return Buffer.from(chunk);
+}
+function _isUint8Array(obj) {
+  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
+}
+
+/*</replacement>*/
+
+/*<replacement>*/
+var util = require('core-util-is');
+util.inherits = require('inherits');
+/*</replacement>*/
+
+/*<replacement>*/
+var debugUtil = require('util');
+var debug = void 0;
+if (debugUtil && debugUtil.debuglog) {
+  debug = debugUtil.debuglog('stream');
+} else {
+  debug = function () {};
+}
+/*</replacement>*/
+
+var BufferList = require('./internal/streams/BufferList');
+var destroyImpl = require('./internal/streams/destroy');
+var StringDecoder;
+
+util.inherits(Readable, Stream);
+
+var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume'];
+
+function prependListener(emitter, event, fn) {
+  // Sadly this is not cacheable as some libraries bundle their own
+  // event emitter implementation with them.
+  if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn);
+
+  // This is a hack to make sure that our error handler is attached before any
+  // userland ones.  NEVER DO THIS. This is here only because this code needs
+  // to continue to work with older versions of Node.js that do not include
+  // the prependListener() method. The goal is to eventually remove this hack.
+  if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
+}
+
+function ReadableState(options, stream) {
+  Duplex = Duplex || require('./_stream_duplex');
+
+  options = options || {};
+
+  // Duplex streams are both readable and writable, but share
+  // the same options object.
+  // However, some cases require setting options to different
+  // values for the readable and the writable sides of the duplex stream.
+  // These options can be provided separately as readableXXX and writableXXX.
+  var isDuplex = stream instanceof Duplex;
+
+  // object stream flag. Used to make read(n) ignore n and to
+  // make all the buffer merging and length checks go away
+  this.objectMode = !!options.objectMode;
+
+  if (isDuplex) this.objectMode = this.objectMode || !!options.readableObjectMode;
+
+  // the point at which it stops calling _read() to fill the buffer
+  // Note: 0 is a valid value, means "don't call _read preemptively ever"
+  var hwm = options.highWaterMark;
+  var readableHwm = options.readableHighWaterMark;
+  var defaultHwm = this.objectMode ? 16 : 16 * 1024;
+
+  if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (readableHwm || readableHwm === 0)) this.highWaterMark = readableHwm;else this.highWaterMark = defaultHwm;
+
+  // cast to ints.
+  this.highWaterMark = Math.floor(this.highWaterMark);
+
+  // A linked list is used to store data chunks instead of an array because the
+  // linked list can remove elements from the beginning faster than
+  // array.shift()
+  this.buffer = new BufferList();
+  this.length = 0;
+  this.pipes = null;
+  this.pipesCount = 0;
+  this.flowing = null;
+  this.ended = false;
+  this.endEmitted = false;
+  this.reading = false;
+
+  // a flag to be able to tell if the event 'readable'/'data' is emitted
+  // immediately, or on a later tick.  We set this to true at first, because
+  // any actions that shouldn't happen until "later" should generally also
+  // not happen before the first read call.
+  this.sync = true;
+
+  // whenever we return null, then we set a flag to say
+  // that we're awaiting a 'readable' event emission.
+  this.needReadable = false;
+  this.emittedReadable = false;
+  this.readableListening = false;
+  this.resumeScheduled = false;
+
+  // has it been destroyed
+  this.destroyed = false;
+
+  // Crypto is kind of old and crusty.  Historically, its default string
+  // encoding is 'binary' so we have to make this configurable.
+  // Everything else in the universe uses 'utf8', though.
+  this.defaultEncoding = options.defaultEncoding || 'utf8';
+
+  // the number of writers that are awaiting a drain event in .pipe()s
+  this.awaitDrain = 0;
+
+  // if true, a maybeReadMore has been scheduled
+  this.readingMore = false;
+
+  this.decoder = null;
+  this.encoding = null;
+  if (options.encoding) {
+    if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
+    this.decoder = new StringDecoder(options.encoding);
+    this.encoding = options.encoding;
+  }
+}
+
+function Readable(options) {
+  Duplex = Duplex || require('./_stream_duplex');
+
+  if (!(this instanceof Readable)) return new Readable(options);
+
+  this._readableState = new ReadableState(options, this);
+
+  // legacy
+  this.readable = true;
+
+  if (options) {
+    if (typeof options.read === 'function') this._read = options.read;
+
+    if (typeof options.destroy === 'function') this._destroy = options.destroy;
+  }
+
+  Stream.call(this);
+}
+
+Object.defineProperty(Readable.prototype, 'destroyed', {
+  get: function () {
+    if (this._readableState === undefined) {
+      return false;
+    }
+    return this._readableState.destroyed;
+  },
+  set: function (value) {
+    // we ignore the value if the stream
+    // has not been initialized yet
+    if (!this._readableState) {
+      return;
+    }
+
+    // backward compatibility, the user is explicitly
+    // managing destroyed
+    this._readableState.destroyed = value;
+  }
+});
+
+Readable.prototype.destroy = destroyImpl.destroy;
+Readable.prototype._undestroy = destroyImpl.undestroy;
+Readable.prototype._destroy = function (err, cb) {
+  this.push(null);
+  cb(err);
+};
+
+// Manually shove something into the read() buffer.
+// This returns true if the highWaterMark has not been hit yet,
+// similar to how Writable.write() returns true if you should
+// write() some more.
+Readable.prototype.push = function (chunk, encoding) {
+  var state = this._readableState;
+  var skipChunkCheck;
+
+  if (!state.objectMode) {
+    if (typeof chunk === 'string') {
+      encoding = encoding || state.defaultEncoding;
+      if (encoding !== state.encoding) {
+        chunk = Buffer.from(chunk, encoding);
+        encoding = '';
+      }
+      skipChunkCheck = true;
+    }
+  } else {
+    skipChunkCheck = true;
+  }
+
+  return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);
+};
+
+// Unshift should *always* be something directly out of read()
+Readable.prototype.unshift = function (chunk) {
+  return readableAddChunk(this, chunk, null, true, false);
+};
+
+function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
+  var state = stream._readableState;
+  if (chunk === null) {
+    state.reading = false;
+    onEofChunk(stream, state);
+  } else {
+    var er;
+    if (!skipChunkCheck) er = chunkInvalid(state, chunk);
+    if (er) {
+      stream.emit('error', er);
+    } else if (state.objectMode || chunk && chunk.length > 0) {
+      if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) {
+        chunk = _uint8ArrayToBuffer(chunk);
+      }
+
+      if (addToFront) {
+        if (state.endEmitted) stream.emit('error', new Error('stream.unshift() after end event'));else addChunk(stream, state, chunk, true);
+      } else if (state.ended) {
+        stream.emit('error', new Error('stream.push() after EOF'));
+      } else {
+        state.reading = false;
+        if (state.decoder && !encoding) {
+          chunk = state.decoder.write(chunk);
+          if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state);
+        } else {
+          addChunk(stream, state, chunk, false);
+        }
+      }
+    } else if (!addToFront) {
+      state.reading = false;
+    }
+  }
+
+  return needMoreData(state);
+}
+
+function addChunk(stream, state, chunk, addToFront) {
+  if (state.flowing && state.length === 0 && !state.sync) {
+    stream.emit('data', chunk);
+    stream.read(0);
+  } else {
+    // update the buffer info.
+    state.length += state.objectMode ? 1 : chunk.length;
+    if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);
+
+    if (state.needReadable) emitReadable(stream);
+  }
+  maybeReadMore(stream, state);
+}
+
+function chunkInvalid(state, chunk) {
+  var er;
+  if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
+    er = new TypeError('Invalid non-string/buffer chunk');
+  }
+  return er;
+}
+
+// if it's past the high water mark, we can push in some more.
+// Also, if we have no data yet, we can stand some
+// more bytes.  This is to work around cases where hwm=0,
+// such as the repl.  Also, if the push() triggered a
+// readable event, and the user called read(largeNumber) such that
+// needReadable was set, then we ought to push more, so that another
+// 'readable' event will be triggered.
+function needMoreData(state) {
+  return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0);
+}
+
+Readable.prototype.isPaused = function () {
+  return this._readableState.flowing === false;
+};
+
+// backwards compatibility.
+Readable.prototype.setEncoding = function (enc) {
+  if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
+  this._readableState.decoder = new StringDecoder(enc);
+  this._readableState.encoding = enc;
+  return this;
+};
+
+// Don't raise the hwm > 8MB
+var MAX_HWM = 0x800000;
+function computeNewHighWaterMark(n) {
+  if (n >= MAX_HWM) {
+    n = MAX_HWM;
+  } else {
+    // Get the next highest power of 2 to prevent increasing hwm excessively in
+    // tiny amounts
+    n--;
+    n |= n >>> 1;
+    n |= n >>> 2;
+    n |= n >>> 4;
+    n |= n >>> 8;
+    n |= n >>> 16;
+    n++;
+  }
+  return n;
+}
+
+// This function is designed to be inlinable, so please take care when making
+// changes to the function body.
+function howMuchToRead(n, state) {
+  if (n <= 0 || state.length === 0 && state.ended) return 0;
+  if (state.objectMode) return 1;
+  if (n !== n) {
+    // Only flow one buffer at a time
+    if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;
+  }
+  // If we're asking for more than the current hwm, then raise the hwm.
+  if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);
+  if (n <= state.length) return n;
+  // Don't have enough
+  if (!state.ended) {
+    state.needReadable = true;
+    return 0;
+  }
+  return state.length;
+}
+
+// you can override either this method, or the async _read(n) below.
+Readable.prototype.read = function (n) {
+  debug('read', n);
+  n = parseInt(n, 10);
+  var state = this._readableState;
+  var nOrig = n;
+
+  if (n !== 0) state.emittedReadable = false;
+
+  // if we're doing read(0) to trigger a readable event, but we
+  // already have a bunch of data in the buffer, then just trigger
+  // the 'readable' event and move on.
+  if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) {
+    debug('read: emitReadable', state.length, state.ended);
+    if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);
+    return null;
+  }
+
+  n = howMuchToRead(n, state);
+
+  // if we've ended, and we're now clear, then finish it up.
+  if (n === 0 && state.ended) {
+    if (state.length === 0) endReadable(this);
+    return null;
+  }
+
+  // All the actual chunk generation logic needs to be
+  // *below* the call to _read.  The reason is that in certain
+  // synthetic stream cases, such as passthrough streams, _read
+  // may be a completely synchronous operation which may change
+  // the state of the read buffer, providing enough data when
+  // before there was *not* enough.
+  //
+  // So, the steps are:
+  // 1. Figure out what the state of things will be after we do
+  // a read from the buffer.
+  //
+  // 2. If that resulting state will trigger a _read, then call _read.
+  // Note that this may be asynchronous, or synchronous.  Yes, it is
+  // deeply ugly to write APIs this way, but that still doesn't mean
+  // that the Readable class should behave improperly, as streams are
+  // designed to be sync/async agnostic.
+  // Take note if the _read call is sync or async (ie, if the read call
+  // has returned yet), so that we know whether or not it's safe to emit
+  // 'readable' etc.
+  //
+  // 3. Actually pull the requested chunks out of the buffer and return.
+
+  // if we need a readable event, then we need to do some reading.
+  var doRead = state.needReadable;
+  debug('need readable', doRead);
+
+  // if we currently have less than the highWaterMark, then also read some
+  if (state.length === 0 || state.length - n < state.highWaterMark) {
+    doRead = true;
+    debug('length less than watermark', doRead);
+  }
+
+  // however, if we've ended, then there's no point, and if we're already
+  // reading, then it's unnecessary.
+  if (state.ended || state.reading) {
+    doRead = false;
+    debug('reading or ended', doRead);
+  } else if (doRead) {
+    debug('do read');
+    state.reading = true;
+    state.sync = true;
+    // if the length is currently zero, then we *need* a readable event.
+    if (state.length === 0) state.needReadable = true;
+    // call internal read method
+    this._read(state.highWaterMark);
+    state.sync = false;
+    // If _read pushed data synchronously, then `reading` will be false,
+    // and we need to re-evaluate how much data we can return to the user.
+    if (!state.reading) n = howMuchToRead(nOrig, state);
+  }
+
+  var ret;
+  if (n > 0) ret = fromList(n, state);else ret = null;
+
+  if (ret === null) {
+    state.needReadable = true;
+    n = 0;
+  } else {
+    state.length -= n;
+  }
+
+  if (state.length === 0) {
+    // If we have nothing in the buffer, then we want to know
+    // as soon as we *do* get something into the buffer.
+    if (!state.ended) state.needReadable = true;
+
+    // If we tried to read() past the EOF, then emit end on the next tick.
+    if (nOrig !== n && state.ended) endReadable(this);
+  }
+
+  if (ret !== null) this.emit('data', ret);
+
+  return ret;
+};
+
+function onEofChunk(stream, state) {
+  if (state.ended) return;
+  if (state.decoder) {
+    var chunk = state.decoder.end();
+    if (chunk && chunk.length) {
+      state.buffer.push(chunk);
+      state.length += state.objectMode ? 1 : chunk.length;
+    }
+  }
+  state.ended = true;
+
+  // emit 'readable' now to make sure it gets picked up.
+  emitReadable(stream);
+}
+
+// Don't emit readable right away in sync mode, because this can trigger
+// another read() call => stack overflow.  This way, it might trigger
+// a nextTick recursion warning, but that's not so bad.
+function emitReadable(stream) {
+  var state = stream._readableState;
+  state.needReadable = false;
+  if (!state.emittedReadable) {
+    debug('emitReadable', state.flowing);
+    state.emittedReadable = true;
+    if (state.sync) pna.nextTick(emitReadable_, stream);else emitReadable_(stream);
+  }
+}
+
+function emitReadable_(stream) {
+  debug('emit readable');
+  stream.emit('readable');
+  flow(stream);
+}
+
+// at this point, the user has presumably seen the 'readable' event,
+// and called read() to consume some data.  that may have triggered
+// in turn another _read(n) call, in which case reading = true if
+// it's in progress.
+// However, if we're not ended, or reading, and the length < hwm,
+// then go ahead and try to read some more preemptively.
+function maybeReadMore(stream, state) {
+  if (!state.readingMore) {
+    state.readingMore = true;
+    pna.nextTick(maybeReadMore_, stream, state);
+  }
+}
+
+function maybeReadMore_(stream, state) {
+  var len = state.length;
+  while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) {
+    debug('maybeReadMore read 0');
+    stream.read(0);
+    if (len === state.length)
+      // didn't get any data, stop spinning.
+      break;else len = state.length;
+  }
+  state.readingMore = false;
+}
+
+// abstract method.  to be overridden in specific implementation classes.
+// call cb(er, data) where data is <= n in length.
+// for virtual (non-string, non-buffer) streams, "length" is somewhat
+// arbitrary, and perhaps not very meaningful.
+Readable.prototype._read = function (n) {
+  this.emit('error', new Error('_read() is not implemented'));
+};
+
+Readable.prototype.pipe = function (dest, pipeOpts) {
+  var src = this;
+  var state = this._readableState;
+
+  switch (state.pipesCount) {
+    case 0:
+      state.pipes = dest;
+      break;
+    case 1:
+      state.pipes = [state.pipes, dest];
+      break;
+    default:
+      state.pipes.push(dest);
+      break;
+  }
+  state.pipesCount += 1;
+  debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);
+
+  var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;
+
+  var endFn = doEnd ? onend : unpipe;
+  if (state.endEmitted) pna.nextTick(endFn);else src.once('end', endFn);
+
+  dest.on('unpipe', onunpipe);
+  function onunpipe(readable, unpipeInfo) {
+    debug('onunpipe');
+    if (readable === src) {
+      if (unpipeInfo && unpipeInfo.hasUnpiped === false) {
+        unpipeInfo.hasUnpiped = true;
+        cleanup();
+      }
+    }
+  }
+
+  function onend() {
+    debug('onend');
+    dest.end();
+  }
+
+  // when the dest drains, it reduces the awaitDrain counter
+  // on the source.  This would be more elegant with a .once()
+  // handler in flow(), but adding and removing repeatedly is
+  // too slow.
+  var ondrain = pipeOnDrain(src);
+  dest.on('drain', ondrain);
+
+  var cleanedUp = false;
+  function cleanup() {
+    debug('cleanup');
+    // cleanup event handlers once the pipe is broken
+    dest.removeListener('close', onclose);
+    dest.removeListener('finish', onfinish);
+    dest.removeListener('drain', ondrain);
+    dest.removeListener('error', onerror);
+    dest.removeListener('unpipe', onunpipe);
+    src.removeListener('end', onend);
+    src.removeListener('end', unpipe);
+    src.removeListener('data', ondata);
+
+    cleanedUp = true;
+
+    // if the reader is waiting for a drain event from this
+    // specific writer, then it would cause it to never start
+    // flowing again.
+    // So, if this is awaiting a drain, then we just call it now.
+    // If we don't know, then assume that we are waiting for one.
+    if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
+  }
+
+  // If the user pushes more data while we're writing to dest then we'll end up
+  // in ondata again. However, we only want to increase awaitDrain once because
+  // dest will only emit one 'drain' event for the multiple writes.
+  // => Introduce a guard on increasing awaitDrain.
+  var increasedAwaitDrain = false;
+  src.on('data', ondata);
+  function ondata(chunk) {
+    debug('ondata');
+    increasedAwaitDrain = false;
+    var ret = dest.write(chunk);
+    if (false === ret && !increasedAwaitDrain) {
+      // If the user unpiped during `dest.write()`, it is possible
+      // to get stuck in a permanently paused state if that write
+      // also returned false.
+      // => Check whether `dest` is still a piping destination.
+      if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
+        debug('false write response, pause', src._readableState.awaitDrain);
+        src._readableState.awaitDrain++;
+        increasedAwaitDrain = true;
+      }
+      src.pause();
+    }
+  }
+
+  // if the dest has an error, then stop piping into it.
+  // however, don't suppress the throwing behavior for this.
+  function onerror(er) {
+    debug('onerror', er);
+    unpipe();
+    dest.removeListener('error', onerror);
+    if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er);
+  }
+
+  // Make sure our error handler is attached before userland ones.
+  prependListener(dest, 'error', onerror);
+
+  // Both close and finish should trigger unpipe, but only once.
+  function onclose() {
+    dest.removeListener('finish', onfinish);
+    unpipe();
+  }
+  dest.once('close', onclose);
+  function onfinish() {
+    debug('onfinish');
+    dest.removeListener('close', onclose);
+    unpipe();
+  }
+  dest.once('finish', onfinish);
+
+  function unpipe() {
+    debug('unpipe');
+    src.unpipe(dest);
+  }
+
+  // tell the dest that it's being piped to
+  dest.emit('pipe', src);
+
+  // start the flow if it hasn't been started already.
+  if (!state.flowing) {
+    debug('pipe resume');
+    src.resume();
+  }
+
+  return dest;
+};
+
+function pipeOnDrain(src) {
+  return function () {
+    var state = src._readableState;
+    debug('pipeOnDrain', state.awaitDrain);
+    if (state.awaitDrain) state.awaitDrain--;
+    if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
+      state.flowing = true;
+      flow(src);
+    }
+  };
+}
+
+Readable.prototype.unpipe = function (dest) {
+  var state = this._readableState;
+  var unpipeInfo = { hasUnpiped: false };
+
+  // if we're not piping anywhere, then do nothing.
+  if (state.pipesCount === 0) return this;
+
+  // just one destination.  most common case.
+  if (state.pipesCount === 1) {
+    // passed in one, but it's not the right one.
+    if (dest && dest !== state.pipes) return this;
+
+    if (!dest) dest = state.pipes;
+
+    // got a match.
+    state.pipes = null;
+    state.pipesCount = 0;
+    state.flowing = false;
+    if (dest) dest.emit('unpipe', this, unpipeInfo);
+    return this;
+  }
+
+  // slow case. multiple pipe destinations.
+
+  if (!dest) {
+    // remove all.
+    var dests = state.pipes;
+    var len = state.pipesCount;
+    state.pipes = null;
+    state.pipesCount = 0;
+    state.flowing = false;
+
+    for (var i = 0; i < len; i++) {
+      dests[i].emit('unpipe', this, unpipeInfo);
+    }return this;
+  }
+
+  // try to find the right one.
+  var index = indexOf(state.pipes, dest);
+  if (index === -1) return this;
+
+  state.pipes.splice(index, 1);
+  state.pipesCount -= 1;
+  if (state.pipesCount === 1) state.pipes = state.pipes[0];
+
+  dest.emit('unpipe', this, unpipeInfo);
+
+  return this;
+};
+
+// set up data events if they are asked for
+// Ensure readable listeners eventually get something
+Readable.prototype.on = function (ev, fn) {
+  var res = Stream.prototype.on.call(this, ev, fn);
+
+  if (ev === 'data') {
+    // Start flowing on next tick if stream isn't explicitly paused
+    if (this._readableState.flowing !== false) this.resume();
+  } else if (ev === 'readable') {
+    var state = this._readableState;
+    if (!state.endEmitted && !state.readableListening) {
+      state.readableListening = state.needReadable = true;
+      state.emittedReadable = false;
+      if (!state.reading) {
+        pna.nextTick(nReadingNextTick, this);
+      } else if (state.length) {
+        emitReadable(this);
+      }
+    }
+  }
+
+  return res;
+};
+Readable.prototype.addListener = Readable.prototype.on;
+
+function nReadingNextTick(self) {
+  debug('readable nexttick read 0');
+  self.read(0);
+}
+
+// pause() and resume() are remnants of the legacy readable stream API
+// If the user uses them, then switch into old mode.
+Readable.prototype.resume = function () {
+  var state = this._readableState;
+  if (!state.flowing) {
+    debug('resume');
+    state.flowing = true;
+    resume(this, state);
+  }
+  return this;
+};
+
+function resume(stream, state) {
+  if (!state.resumeScheduled) {
+    state.resumeScheduled = true;
+    pna.nextTick(resume_, stream, state);
+  }
+}
+
+function resume_(stream, state) {
+  if (!state.reading) {
+    debug('resume read 0');
+    stream.read(0);
+  }
+
+  state.resumeScheduled = false;
+  state.awaitDrain = 0;
+  stream.emit('resume');
+  flow(stream);
+  if (state.flowing && !state.reading) stream.read(0);
+}
+
+Readable.prototype.pause = function () {
+  debug('call pause flowing=%j', this._readableState.flowing);
+  if (false !== this._readableState.flowing) {
+    debug('pause');
+    this._readableState.flowing = false;
+    this.emit('pause');
+  }
+  return this;
+};
+
+function flow(stream) {
+  var state = stream._readableState;
+  debug('flow', state.flowing);
+  while (state.flowing && stream.read() !== null) {}
+}
+
+// wrap an old-style stream as the async data source.
+// This is *not* part of the readable stream interface.
+// It is an ugly unfortunate mess of history.
+Readable.prototype.wrap = function (stream) {
+  var _this = this;
+
+  var state = this._readableState;
+  var paused = false;
+
+  stream.on('end', function () {
+    debug('wrapped end');
+    if (state.decoder && !state.ended) {
+      var chunk = state.decoder.end();
+      if (chunk && chunk.length) _this.push(chunk);
+    }
+
+    _this.push(null);
+  });
+
+  stream.on('data', function (chunk) {
+    debug('wrapped data');
+    if (state.decoder) chunk = state.decoder.write(chunk);
+
+    // don't skip over falsy values in objectMode
+    if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;
+
+    var ret = _this.push(chunk);
+    if (!ret) {
+      paused = true;
+      stream.pause();
+    }
+  });
+
+  // proxy all the other methods.
+  // important when wrapping filters and duplexes.
+  for (var i in stream) {
+    if (this[i] === undefined && typeof stream[i] === 'function') {
+      this[i] = function (method) {
+        return function () {
+          return stream[method].apply(stream, arguments);
+        };
+      }(i);
+    }
+  }
+
+  // proxy certain important events.
+  for (var n = 0; n < kProxyEvents.length; n++) {
+    stream.on(kProxyEvents[n], this.emit.bind(this, kProxyEvents[n]));
+  }
+
+  // when we try to consume some more bytes, simply unpause the
+  // underlying stream.
+  this._read = function (n) {
+    debug('wrapped _read', n);
+    if (paused) {
+      paused = false;
+      stream.resume();
+    }
+  };
+
+  return this;
+};
+
+Object.defineProperty(Readable.prototype, 'readableHighWaterMark', {
+  // making it explicit this property is not enumerable
+  // because otherwise some prototype manipulation in
+  // userland will fail
+  enumerable: false,
+  get: function () {
+    return this._readableState.highWaterMark;
+  }
+});
+
+// exposed for testing purposes only.
+Readable._fromList = fromList;
+
+// Pluck off n bytes from an array of buffers.
+// Length is the combined lengths of all the buffers in the list.
+// This function is designed to be inlinable, so please take care when making
+// changes to the function body.
+function fromList(n, state) {
+  // nothing buffered
+  if (state.length === 0) return null;
+
+  var ret;
+  if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
+    // read it all, truncate the list
+    if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length);
+    state.buffer.clear();
+  } else {
+    // read part of list
+    ret = fromListPartial(n, state.buffer, state.decoder);
+  }
+
+  return ret;
+}
+
+// Extracts only enough buffered data to satisfy the amount requested.
+// This function is designed to be inlinable, so please take care when making
+// changes to the function body.
+function fromListPartial(n, list, hasStrings) {
+  var ret;
+  if (n < list.head.data.length) {
+    // slice is the same for buffers and strings
+    ret = list.head.data.slice(0, n);
+    list.head.data = list.head.data.slice(n);
+  } else if (n === list.head.data.length) {
+    // first chunk is a perfect match
+    ret = list.shift();
+  } else {
+    // result spans more than one buffer
+    ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list);
+  }
+  return ret;
+}
+
+// Copies a specified amount of characters from the list of buffered data
+// chunks.
+// This function is designed to be inlinable, so please take care when making
+// changes to the function body.
+function copyFromBufferString(n, list) {
+  var p = list.head;
+  var c = 1;
+  var ret = p.data;
+  n -= ret.length;
+  while (p = p.next) {
+    var str = p.data;
+    var nb = n > str.length ? str.length : n;
+    if (nb === str.length) ret += str;else ret += str.slice(0, n);
+    n -= nb;
+    if (n === 0) {
+      if (nb === str.length) {
+        ++c;
+        if (p.next) list.head = p.next;else list.head = list.tail = null;
+      } else {
+        list.head = p;
+        p.data = str.slice(nb);
+      }
+      break;
+    }
+    ++c;
+  }
+  list.length -= c;
+  return ret;
+}
+
+// Copies a specified amount of bytes from the list of buffered data chunks.
+// This function is designed to be inlinable, so please take care when making
+// changes to the function body.
+function copyFromBuffer(n, list) {
+  var ret = Buffer.allocUnsafe(n);
+  var p = list.head;
+  var c = 1;
+  p.data.copy(ret);
+  n -= p.data.length;
+  while (p = p.next) {
+    var buf = p.data;
+    var nb = n > buf.length ? buf.length : n;
+    buf.copy(ret, ret.length - n, 0, nb);
+    n -= nb;
+    if (n === 0) {
+      if (nb === buf.length) {
+        ++c;
+        if (p.next) list.head = p.next;else list.head = list.tail = null;
+      } else {
+        list.head = p;
+        p.data = buf.slice(nb);
+      }
+      break;
+    }
+    ++c;
+  }
+  list.length -= c;
+  return ret;
+}
+
+function endReadable(stream) {
+  var state = stream._readableState;
+
+  // If we get here before consuming all the bytes, then that is a
+  // bug in node.  Should never happen.
+  if (state.length > 0) throw new Error('"endReadable()" called on non-empty stream');
+
+  if (!state.endEmitted) {
+    state.ended = true;
+    pna.nextTick(endReadableNT, state, stream);
+  }
+}
+
+function endReadableNT(state, stream) {
+  // Check that we didn't get one last unshift.
+  if (!state.endEmitted && state.length === 0) {
+    state.endEmitted = true;
+    stream.readable = false;
+    stream.emit('end');
+  }
+}
+
+function indexOf(xs, x) {
+  for (var i = 0, l = xs.length; i < l; i++) {
+    if (xs[i] === x) return i;
+  }
+  return -1;
+}
+}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"./_stream_duplex":13,"./internal/streams/BufferList":18,"./internal/streams/destroy":19,"./internal/streams/stream":20,"_process":11,"core-util-is":4,"events":5,"inherits":7,"isarray":9,"process-nextick-args":10,"safe-buffer":26,"string_decoder/":21,"util":2}],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 Duplex = require('./_stream_duplex');
+
+/*<replacement>*/
+var util = require('core-util-is');
+util.inherits = require('inherits');
+/*</replacement>*/
+
+util.inherits(Transform, Duplex);
+
+function afterTransform(er, data) {
+  var ts = this._transformState;
+  ts.transforming = false;
+
+  var cb = ts.writecb;
+
+  if (!cb) {
+    return this.emit('error', new Error('write callback called multiple times'));
+  }
+
+  ts.writechunk = null;
+  ts.writecb = null;
+
+  if (data != null) // single equals check for both `null` and `undefined`
+    this.push(data);
+
+  cb(er);
+
+  var rs = this._readableState;
+  rs.reading = false;
+  if (rs.needReadable || rs.length < rs.highWaterMark) {
+    this._read(rs.highWaterMark);
+  }
+}
+
+function Transform(options) {
+  if (!(this instanceof Transform)) return new Transform(options);
+
+  Duplex.call(this, options);
+
+  this._transformState = {
+    afterTransform: afterTransform.bind(this),
+    needTransform: false,
+    transforming: false,
+    writecb: null,
+    writechunk: null,
+    writeencoding: null
+  };
+
+  // start out asking for a readable event once data is transformed.
+  this._readableState.needReadable = true;
+
+  // we have implemented the _read method, and done the other things
+  // that Readable wants before the first _read call, so unset the
+  // sync guard flag.
+  this._readableState.sync = false;
+
+  if (options) {
+    if (typeof options.transform === 'function') this._transform = options.transform;
+
+    if (typeof options.flush === 'function') this._flush = options.flush;
+  }
+
+  // When the writable side finishes, then flush out anything remaining.
+  this.on('prefinish', prefinish);
+}
+
+function prefinish() {
+  var _this = this;
+
+  if (typeof this._flush === 'function') {
+    this._flush(function (er, data) {
+      done(_this, er, data);
+    });
+  } else {
+    done(this, null, null);
+  }
+}
+
+Transform.prototype.push = function (chunk, encoding) {
+  this._transformState.needTransform = false;
+  return Duplex.prototype.push.call(this, chunk, encoding);
+};
+
+// This is the part where you do stuff!
+// override this function in implementation classes.
+// 'chunk' is an input chunk.
+//
+// Call `push(newChunk)` to pass along transformed output
+// to the readable side.  You may call 'push' zero or more times.
+//
+// Call `cb(err)` when you are done with this chunk.  If you pass
+// an error, then that'll put the hurt on the whole operation.  If you
+// never call cb(), then you'll never get another chunk.
+Transform.prototype._transform = function (chunk, encoding, cb) {
+  throw new Error('_transform() is not implemented');
+};
+
+Transform.prototype._write = function (chunk, encoding, cb) {
+  var ts = this._transformState;
+  ts.writecb = cb;
+  ts.writechunk = chunk;
+  ts.writeencoding = encoding;
+  if (!ts.transforming) {
+    var rs = this._readableState;
+    if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
+  }
+};
+
+// Doesn't matter what the args are here.
+// _transform does all the work.
+// That we got here means that the readable side wants more data.
+Transform.prototype._read = function (n) {
+  var ts = this._transformState;
+
+  if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
+    ts.transforming = true;
+    this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
+  } else {
+    // mark that we need a transform, so that any data that comes in
+    // will get processed, now that we've asked for it.
+    ts.needTransform = true;
+  }
+};
+
+Transform.prototype._destroy = function (err, cb) {
+  var _this2 = this;
+
+  Duplex.prototype._destroy.call(this, err, function (err2) {
+    cb(err2);
+    _this2.emit('close');
+  });
+};
+
+function done(stream, er, data) {
+  if (er) return stream.emit('error', er);
+
+  if (data != null) // single equals check for both `null` and `undefined`
+    stream.push(data);
+
+  // if there's nothing in the write buffer, then that means
+  // that nothing more will ever be provided
+  if (stream._writableState.length) throw new Error('Calling transform done when ws.length != 0');
+
+  if (stream._transformState.transforming) throw new Error('Calling transform done when still transforming');
+
+  return stream.push(null);
+}
+},{"./_stream_duplex":13,"core-util-is":4,"inherits":7}],17:[function(require,module,exports){
+(function (process,global,setImmediate){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+// A bit simpler than readable streams.
+// Implement an async ._write(chunk, encoding, cb), and it'll handle all
+// the drain event emission and buffering.
+
+'use strict';
+
+/*<replacement>*/
+
+var pna = require('process-nextick-args');
+/*</replacement>*/
+
+module.exports = Writable;
+
+/* <replacement> */
+function WriteReq(chunk, encoding, cb) {
+  this.chunk = chunk;
+  this.encoding = encoding;
+  this.callback = cb;
+  this.next = null;
+}
+
+// It seems a linked list but it is not
+// there will be only 2 of these for each stream
+function CorkedRequest(state) {
+  var _this = this;
+
+  this.next = null;
+  this.entry = null;
+  this.finish = function () {
+    onCorkedFinish(_this, state);
+  };
+}
+/* </replacement> */
+
+/*<replacement>*/
+var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : pna.nextTick;
+/*</replacement>*/
+
+/*<replacement>*/
+var Duplex;
+/*</replacement>*/
+
+Writable.WritableState = WritableState;
+
+/*<replacement>*/
+var util = require('core-util-is');
+util.inherits = require('inherits');
+/*</replacement>*/
+
+/*<replacement>*/
+var internalUtil = {
+  deprecate: require('util-deprecate')
+};
+/*</replacement>*/
+
+/*<replacement>*/
+var Stream = require('./internal/streams/stream');
+/*</replacement>*/
+
+/*<replacement>*/
+
+var Buffer = require('safe-buffer').Buffer;
+var OurUint8Array = global.Uint8Array || function () {};
+function _uint8ArrayToBuffer(chunk) {
+  return Buffer.from(chunk);
+}
+function _isUint8Array(obj) {
+  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
+}
+
+/*</replacement>*/
+
+var destroyImpl = require('./internal/streams/destroy');
+
+util.inherits(Writable, Stream);
+
+function nop() {}
+
+function WritableState(options, stream) {
+  Duplex = Duplex || require('./_stream_duplex');
+
+  options = options || {};
+
+  // Duplex streams are both readable and writable, but share
+  // the same options object.
+  // However, some cases require setting options to different
+  // values for the readable and the writable sides of the duplex stream.
+  // These options can be provided separately as readableXXX and writableXXX.
+  var isDuplex = stream instanceof Duplex;
+
+  // object stream flag to indicate whether or not this stream
+  // contains buffers or objects.
+  this.objectMode = !!options.objectMode;
+
+  if (isDuplex) this.objectMode = this.objectMode || !!options.writableObjectMode;
+
+  // the point at which write() starts returning false
+  // Note: 0 is a valid value, means that we always return false if
+  // the entire buffer is not flushed immediately on write()
+  var hwm = options.highWaterMark;
+  var writableHwm = options.writableHighWaterMark;
+  var defaultHwm = this.objectMode ? 16 : 16 * 1024;
+
+  if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (writableHwm || writableHwm === 0)) this.highWaterMark = writableHwm;else this.highWaterMark = defaultHwm;
+
+  // cast to ints.
+  this.highWaterMark = Math.floor(this.highWaterMark);
+
+  // if _final has been called
+  this.finalCalled = false;
+
+  // drain event flag.
+  this.needDrain = false;
+  // at the start of calling end()
+  this.ending = false;
+  // when end() has been called, and returned
+  this.ended = false;
+  // when 'finish' is emitted
+  this.finished = false;
+
+  // has it been destroyed
+  this.destroyed = false;
+
+  // should we decode strings into buffers before passing to _write?
+  // this is here so that some node-core streams can optimize string
+  // handling at a lower level.
+  var noDecode = options.decodeStrings === false;
+  this.decodeStrings = !noDecode;
+
+  // Crypto is kind of old and crusty.  Historically, its default string
+  // encoding is 'binary' so we have to make this configurable.
+  // Everything else in the universe uses 'utf8', though.
+  this.defaultEncoding = options.defaultEncoding || 'utf8';
+
+  // not an actual buffer we keep track of, but a measurement
+  // of how much we're waiting to get pushed to some underlying
+  // socket or file.
+  this.length = 0;
+
+  // a flag to see when we're in the middle of a write.
+  this.writing = false;
+
+  // when true all writes will be buffered until .uncork() call
+  this.corked = 0;
+
+  // a flag to be able to tell if the onwrite cb is called immediately,
+  // or on a later tick.  We set this to true at first, because any
+  // actions that shouldn't happen until "later" should generally also
+  // not happen before the first write call.
+  this.sync = true;
+
+  // a flag to know if we're processing previously buffered items, which
+  // may call the _write() callback in the same tick, so that we don't
+  // end up in an overlapped onwrite situation.
+  this.bufferProcessing = false;
+
+  // the callback that's passed to _write(chunk,cb)
+  this.onwrite = function (er) {
+    onwrite(stream, er);
+  };
+
+  // the callback that the user supplies to write(chunk,encoding,cb)
+  this.writecb = null;
+
+  // the amount that is being written when _write is called.
+  this.writelen = 0;
+
+  this.bufferedRequest = null;
+  this.lastBufferedRequest = null;
+
+  // number of pending user-supplied write callbacks
+  // this must be 0 before 'finish' can be emitted
+  this.pendingcb = 0;
+
+  // emit prefinish if the only thing we're waiting for is _write cbs
+  // This is relevant for synchronous Transform streams
+  this.prefinished = false;
+
+  // True if the error was already emitted and should not be thrown again
+  this.errorEmitted = false;
+
+  // count buffered requests
+  this.bufferedRequestCount = 0;
+
+  // allocate the first CorkedRequest, there is always
+  // one allocated and free to use, and we maintain at most two
+  this.corkedRequestsFree = new CorkedRequest(this);
+}
+
+WritableState.prototype.getBuffer = function getBuffer() {
+  var current = this.bufferedRequest;
+  var out = [];
+  while (current) {
+    out.push(current);
+    current = current.next;
+  }
+  return out;
+};
+
+(function () {
+  try {
+    Object.defineProperty(WritableState.prototype, 'buffer', {
+      get: internalUtil.deprecate(function () {
+        return this.getBuffer();
+      }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')
+    });
+  } catch (_) {}
+})();
+
+// Test _writableState for inheritance to account for Duplex streams,
+// whose prototype chain only points to Readable.
+var realHasInstance;
+if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {
+  realHasInstance = Function.prototype[Symbol.hasInstance];
+  Object.defineProperty(Writable, Symbol.hasInstance, {
+    value: function (object) {
+      if (realHasInstance.call(this, object)) return true;
+      if (this !== Writable) return false;
+
+      return object && object._writableState instanceof WritableState;
+    }
+  });
+} else {
+  realHasInstance = function (object) {
+    return object instanceof this;
+  };
+}
+
+function Writable(options) {
+  Duplex = Duplex || require('./_stream_duplex');
+
+  // Writable ctor is applied to Duplexes, too.
+  // `realHasInstance` is necessary because using plain `instanceof`
+  // would return false, as no `_writableState` property is attached.
+
+  // Trying to use the custom `instanceof` for Writable here will also break the
+  // Node.js LazyTransform implementation, which has a non-trivial getter for
+  // `_writableState` that would lead to infinite recursion.
+  if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) {
+    return new Writable(options);
+  }
+
+  this._writableState = new WritableState(options, this);
+
+  // legacy.
+  this.writable = true;
+
+  if (options) {
+    if (typeof options.write === 'function') this._write = options.write;
+
+    if (typeof options.writev === 'function') this._writev = options.writev;
+
+    if (typeof options.destroy === 'function') this._destroy = options.destroy;
+
+    if (typeof options.final === 'function') this._final = options.final;
+  }
+
+  Stream.call(this);
+}
+
+// Otherwise people can pipe Writable streams, which is just wrong.
+Writable.prototype.pipe = function () {
+  this.emit('error', new Error('Cannot pipe, not readable'));
+};
+
+function writeAfterEnd(stream, cb) {
+  var er = new Error('write after end');
+  // TODO: defer error events consistently everywhere, not just the cb
+  stream.emit('error', er);
+  pna.nextTick(cb, er);
+}
+
+// Checks that a user-supplied chunk is valid, especially for the particular
+// mode the stream is in. Currently this means that `null` is never accepted
+// and undefined/non-string values are only allowed in object mode.
+function validChunk(stream, state, chunk, cb) {
+  var valid = true;
+  var er = false;
+
+  if (chunk === null) {
+    er = new TypeError('May not write null values to stream');
+  } else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
+    er = new TypeError('Invalid non-string/buffer chunk');
+  }
+  if (er) {
+    stream.emit('error', er);
+    pna.nextTick(cb, er);
+    valid = false;
+  }
+  return valid;
+}
+
+Writable.prototype.write = function (chunk, encoding, cb) {
+  var state = this._writableState;
+  var ret = false;
+  var isBuf = !state.objectMode && _isUint8Array(chunk);
+
+  if (isBuf && !Buffer.isBuffer(chunk)) {
+    chunk = _uint8ArrayToBuffer(chunk);
+  }
+
+  if (typeof encoding === 'function') {
+    cb = encoding;
+    encoding = null;
+  }
+
+  if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;
+
+  if (typeof cb !== 'function') cb = nop;
+
+  if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {
+    state.pendingcb++;
+    ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);
+  }
+
+  return ret;
+};
+
+Writable.prototype.cork = function () {
+  var state = this._writableState;
+
+  state.corked++;
+};
+
+Writable.prototype.uncork = function () {
+  var state = this._writableState;
+
+  if (state.corked) {
+    state.corked--;
+
+    if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
+  }
+};
+
+Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
+  // node::ParseEncoding() requires lower case.
+  if (typeof encoding === 'string') encoding = encoding.toLowerCase();
+  if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding);
+  this._writableState.defaultEncoding = encoding;
+  return this;
+};
+
+function decodeChunk(state, chunk, encoding) {
+  if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
+    chunk = Buffer.from(chunk, encoding);
+  }
+  return chunk;
+}
+
+Object.defineProperty(Writable.prototype, 'writableHighWaterMark', {
+  // making it explicit this property is not enumerable
+  // because otherwise some prototype manipulation in
+  // userland will fail
+  enumerable: false,
+  get: function () {
+    return this._writableState.highWaterMark;
+  }
+});
+
+// if we're already writing something, then just put this
+// in the queue, and wait our turn.  Otherwise, call _write
+// If we return false, then we need a drain event, so set that flag.
+function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {
+  if (!isBuf) {
+    var newChunk = decodeChunk(state, chunk, encoding);
+    if (chunk !== newChunk) {
+      isBuf = true;
+      encoding = 'buffer';
+      chunk = newChunk;
+    }
+  }
+  var len = state.objectMode ? 1 : chunk.length;
+
+  state.length += len;
+
+  var ret = state.length < state.highWaterMark;
+  // we must ensure that previous needDrain will not be reset to false.
+  if (!ret) state.needDrain = true;
+
+  if (state.writing || state.corked) {
+    var last = state.lastBufferedRequest;
+    state.lastBufferedRequest = {
+      chunk: chunk,
+      encoding: encoding,
+      isBuf: isBuf,
+      callback: cb,
+      next: null
+    };
+    if (last) {
+      last.next = state.lastBufferedRequest;
+    } else {
+      state.bufferedRequest = state.lastBufferedRequest;
+    }
+    state.bufferedRequestCount += 1;
+  } else {
+    doWrite(stream, state, false, len, chunk, encoding, cb);
+  }
+
+  return ret;
+}
+
+function doWrite(stream, state, writev, len, chunk, encoding, cb) {
+  state.writelen = len;
+  state.writecb = cb;
+  state.writing = true;
+  state.sync = true;
+  if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
+  state.sync = false;
+}
+
+function onwriteError(stream, state, sync, er, cb) {
+  --state.pendingcb;
+
+  if (sync) {
+    // defer the callback if we are being called synchronously
+    // to avoid piling up things on the stack
+    pna.nextTick(cb, er);
+    // this can emit finish, and it will always happen
+    // after error
+    pna.nextTick(finishMaybe, stream, state);
+    stream._writableState.errorEmitted = true;
+    stream.emit('error', er);
+  } else {
+    // the caller expect this to happen before if
+    // it is async
+    cb(er);
+    stream._writableState.errorEmitted = true;
+    stream.emit('error', er);
+    // this can emit finish, but finish must
+    // always follow error
+    finishMaybe(stream, state);
+  }
+}
+
+function onwriteStateUpdate(state) {
+  state.writing = false;
+  state.writecb = null;
+  state.length -= state.writelen;
+  state.writelen = 0;
+}
+
+function onwrite(stream, er) {
+  var state = stream._writableState;
+  var sync = state.sync;
+  var cb = state.writecb;
+
+  onwriteStateUpdate(state);
+
+  if (er) onwriteError(stream, state, sync, er, cb);else {
+    // Check if we're actually ready to finish, but don't emit yet
+    var finished = needFinish(state);
+
+    if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
+      clearBuffer(stream, state);
+    }
+
+    if (sync) {
+      /*<replacement>*/
+      asyncWrite(afterWrite, stream, state, finished, cb);
+      /*</replacement>*/
+    } else {
+      afterWrite(stream, state, finished, cb);
+    }
+  }
+}
+
+function afterWrite(stream, state, finished, cb) {
+  if (!finished) onwriteDrain(stream, state);
+  state.pendingcb--;
+  cb();
+  finishMaybe(stream, state);
+}
+
+// Must force callback to be called on nextTick, so that we don't
+// emit 'drain' before the write() consumer gets the 'false' return
+// value, and has a chance to attach a 'drain' listener.
+function onwriteDrain(stream, state) {
+  if (state.length === 0 && state.needDrain) {
+    state.needDrain = false;
+    stream.emit('drain');
+  }
+}
+
+// if there's something in the buffer waiting, then process it
+function clearBuffer(stream, state) {
+  state.bufferProcessing = true;
+  var entry = state.bufferedRequest;
+
+  if (stream._writev && entry && entry.next) {
+    // Fast case, write everything using _writev()
+    var l = state.bufferedRequestCount;
+    var buffer = new Array(l);
+    var holder = state.corkedRequestsFree;
+    holder.entry = entry;
+
+    var count = 0;
+    var allBuffers = true;
+    while (entry) {
+      buffer[count] = entry;
+      if (!entry.isBuf) allBuffers = false;
+      entry = entry.next;
+      count += 1;
+    }
+    buffer.allBuffers = allBuffers;
+
+    doWrite(stream, state, true, state.length, buffer, '', holder.finish);
+
+    // doWrite is almost always async, defer these to save a bit of time
+    // as the hot path ends with doWrite
+    state.pendingcb++;
+    state.lastBufferedRequest = null;
+    if (holder.next) {
+      state.corkedRequestsFree = holder.next;
+      holder.next = null;
+    } else {
+      state.corkedRequestsFree = new CorkedRequest(state);
+    }
+    state.bufferedRequestCount = 0;
+  } else {
+    // Slow case, write chunks one-by-one
+    while (entry) {
+      var chunk = entry.chunk;
+      var encoding = entry.encoding;
+      var cb = entry.callback;
+      var len = state.objectMode ? 1 : chunk.length;
+
+      doWrite(stream, state, false, len, chunk, encoding, cb);
+      entry = entry.next;
+      state.bufferedRequestCount--;
+      // if we didn't call the onwrite immediately, then
+      // it means that we need to wait until it does.
+      // also, that means that the chunk and cb are currently
+      // being processed, so move the buffer counter past them.
+      if (state.writing) {
+        break;
+      }
+    }
+
+    if (entry === null) state.lastBufferedRequest = null;
+  }
+
+  state.bufferedRequest = entry;
+  state.bufferProcessing = false;
+}
+
+Writable.prototype._write = function (chunk, encoding, cb) {
+  cb(new Error('_write() is not implemented'));
+};
+
+Writable.prototype._writev = null;
+
+Writable.prototype.end = function (chunk, encoding, cb) {
+  var state = this._writableState;
+
+  if (typeof chunk === 'function') {
+    cb = chunk;
+    chunk = null;
+    encoding = null;
+  } else if (typeof encoding === 'function') {
+    cb = encoding;
+    encoding = null;
+  }
+
+  if (chunk !== null && chunk !== undefined) this.write(chunk, encoding);
+
+  // .end() fully uncorks
+  if (state.corked) {
+    state.corked = 1;
+    this.uncork();
+  }
+
+  // ignore unnecessary end() calls.
+  if (!state.ending && !state.finished) endWritable(this, state, cb);
+};
+
+function needFinish(state) {
+  return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
+}
+function callFinal(stream, state) {
+  stream._final(function (err) {
+    state.pendingcb--;
+    if (err) {
+      stream.emit('error', err);
+    }
+    state.prefinished = true;
+    stream.emit('prefinish');
+    finishMaybe(stream, state);
+  });
+}
+function prefinish(stream, state) {
+  if (!state.prefinished && !state.finalCalled) {
+    if (typeof stream._final === 'function') {
+      state.pendingcb++;
+      state.finalCalled = true;
+      pna.nextTick(callFinal, stream, state);
+    } else {
+      state.prefinished = true;
+      stream.emit('prefinish');
+    }
+  }
+}
+
+function finishMaybe(stream, state) {
+  var need = needFinish(state);
+  if (need) {
+    prefinish(stream, state);
+    if (state.pendingcb === 0) {
+      state.finished = true;
+      stream.emit('finish');
+    }
+  }
+  return need;
+}
+
+function endWritable(stream, state, cb) {
+  state.ending = true;
+  finishMaybe(stream, state);
+  if (cb) {
+    if (state.finished) pna.nextTick(cb);else stream.once('finish', cb);
+  }
+  state.ended = true;
+  stream.writable = false;
+}
+
+function onCorkedFinish(corkReq, state, err) {
+  var entry = corkReq.entry;
+  corkReq.entry = null;
+  while (entry) {
+    var cb = entry.callback;
+    state.pendingcb--;
+    cb(err);
+    entry = entry.next;
+  }
+  if (state.corkedRequestsFree) {
+    state.corkedRequestsFree.next = corkReq;
+  } else {
+    state.corkedRequestsFree = corkReq;
+  }
+}
+
+Object.defineProperty(Writable.prototype, 'destroyed', {
+  get: function () {
+    if (this._writableState === undefined) {
+      return false;
+    }
+    return this._writableState.destroyed;
+  },
+  set: function (value) {
+    // we ignore the value if the stream
+    // has not been initialized yet
+    if (!this._writableState) {
+      return;
+    }
+
+    // backward compatibility, the user is explicitly
+    // managing destroyed
+    this._writableState.destroyed = value;
+  }
+});
+
+Writable.prototype.destroy = destroyImpl.destroy;
+Writable.prototype._undestroy = destroyImpl.undestroy;
+Writable.prototype._destroy = function (err, cb) {
+  this.end();
+  cb(err);
+};
+}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("timers").setImmediate)
+},{"./_stream_duplex":13,"./internal/streams/destroy":19,"./internal/streams/stream":20,"_process":11,"core-util-is":4,"inherits":7,"process-nextick-args":10,"safe-buffer":26,"timers":29,"util-deprecate":30}],18:[function(require,module,exports){
+'use strict';
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+var Buffer = require('safe-buffer').Buffer;
+var util = require('util');
+
+function copyBuffer(src, target, offset) {
+  src.copy(target, offset);
+}
+
+module.exports = function () {
+  function BufferList() {
+    _classCallCheck(this, BufferList);
+
+    this.head = null;
+    this.tail = null;
+    this.length = 0;
+  }
+
+  BufferList.prototype.push = function push(v) {
+    var entry = { data: v, next: null };
+    if (this.length > 0) this.tail.next = entry;else this.head = entry;
+    this.tail = entry;
+    ++this.length;
+  };
+
+  BufferList.prototype.unshift = function unshift(v) {
+    var entry = { data: v, next: this.head };
+    if (this.length === 0) this.tail = entry;
+    this.head = entry;
+    ++this.length;
+  };
+
+  BufferList.prototype.shift = function shift() {
+    if (this.length === 0) return;
+    var ret = this.head.data;
+    if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
+    --this.length;
+    return ret;
+  };
+
+  BufferList.prototype.clear = function clear() {
+    this.head = this.tail = null;
+    this.length = 0;
+  };
+
+  BufferList.prototype.join = function join(s) {
+    if (this.length === 0) return '';
+    var p = this.head;
+    var ret = '' + p.data;
+    while (p = p.next) {
+      ret += s + p.data;
+    }return ret;
+  };
+
+  BufferList.prototype.concat = function concat(n) {
+    if (this.length === 0) return Buffer.alloc(0);
+    if (this.length === 1) return this.head.data;
+    var ret = Buffer.allocUnsafe(n >>> 0);
+    var p = this.head;
+    var i = 0;
+    while (p) {
+      copyBuffer(p.data, ret, i);
+      i += p.data.length;
+      p = p.next;
+    }
+    return ret;
+  };
+
+  return BufferList;
+}();
+
+if (util && util.inspect && util.inspect.custom) {
+  module.exports.prototype[util.inspect.custom] = function () {
+    var obj = util.inspect({ length: this.length });
+    return this.constructor.name + ' ' + obj;
+  };
+}
+},{"safe-buffer":26,"util":2}],19:[function(require,module,exports){
+'use strict';
+
+/*<replacement>*/
+
+var pna = require('process-nextick-args');
+/*</replacement>*/
+
+// undocumented cb() API, needed for core, not for public API
+function destroy(err, cb) {
+  var _this = this;
+
+  var readableDestroyed = this._readableState && this._readableState.destroyed;
+  var writableDestroyed = this._writableState && this._writableState.destroyed;
+
+  if (readableDestroyed || writableDestroyed) {
+    if (cb) {
+      cb(err);
+    } else if (err && (!this._writableState || !this._writableState.errorEmitted)) {
+      pna.nextTick(emitErrorNT, this, err);
+    }
+    return this;
+  }
+
+  // we set destroyed to true before firing error callbacks in order
+  // to make it re-entrance safe in case destroy() is called within callbacks
+
+  if (this._readableState) {
+    this._readableState.destroyed = true;
+  }
+
+  // if this is a duplex stream mark the writable part as destroyed as well
+  if (this._writableState) {
+    this._writableState.destroyed = true;
+  }
+
+  this._destroy(err || null, function (err) {
+    if (!cb && err) {
+      pna.nextTick(emitErrorNT, _this, err);
+      if (_this._writableState) {
+        _this._writableState.errorEmitted = true;
+      }
+    } else if (cb) {
+      cb(err);
+    }
+  });
+
+  return this;
+}
+
+function undestroy() {
+  if (this._readableState) {
+    this._readableState.destroyed = false;
+    this._readableState.reading = false;
+    this._readableState.ended = false;
+    this._readableState.endEmitted = false;
+  }
+
+  if (this._writableState) {
+    this._writableState.destroyed = false;
+    this._writableState.ended = false;
+    this._writableState.ending = false;
+    this._writableState.finished = false;
+    this._writableState.errorEmitted = false;
+  }
+}
+
+function emitErrorNT(self, err) {
+  self.emit('error', err);
+}
+
+module.exports = {
+  destroy: destroy,
+  undestroy: undestroy
+};
+},{"process-nextick-args":10}],20:[function(require,module,exports){
+module.exports = require('events').EventEmitter;
+
+},{"events":5}],21:[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":26}],22:[function(require,module,exports){
+module.exports = require('./readable').PassThrough
+
+},{"./readable":23}],23:[function(require,module,exports){
+exports = module.exports = require('./lib/_stream_readable.js');
+exports.Stream = exports;
+exports.Readable = exports;
+exports.Writable = require('./lib/_stream_writable.js');
+exports.Duplex = require('./lib/_stream_duplex.js');
+exports.Transform = require('./lib/_stream_transform.js');
+exports.PassThrough = require('./lib/_stream_passthrough.js');
+
+},{"./lib/_stream_duplex.js":13,"./lib/_stream_passthrough.js":14,"./lib/_stream_readable.js":15,"./lib/_stream_transform.js":16,"./lib/_stream_writable.js":17}],24:[function(require,module,exports){
+module.exports = require('./readable').Transform
+
+},{"./readable":23}],25:[function(require,module,exports){
+module.exports = require('./lib/_stream_writable.js');
+
+},{"./lib/_stream_writable.js":17}],26:[function(require,module,exports){
+/* eslint-disable node/no-deprecated-api */
+var buffer = require('buffer')
+var Buffer = buffer.Buffer
+
+// alternative to using Object.keys for old browsers
+function copyProps (src, dst) {
+  for (var key in src) {
+    dst[key] = src[key]
+  }
+}
+if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
+  module.exports = buffer
+} else {
+  // Copy properties from require('buffer')
+  copyProps(buffer, exports)
+  exports.Buffer = SafeBuffer
+}
+
+function SafeBuffer (arg, encodingOrOffset, length) {
+  return Buffer(arg, encodingOrOffset, length)
+}
+
+// Copy static methods from Buffer
+copyProps(Buffer, SafeBuffer)
+
+SafeBuffer.from = function (arg, encodingOrOffset, length) {
+  if (typeof arg === 'number') {
+    throw new TypeError('Argument must not be a number')
+  }
+  return Buffer(arg, encodingOrOffset, length)
+}
+
+SafeBuffer.alloc = function (size, fill, encoding) {
+  if (typeof size !== 'number') {
+    throw new TypeError('Argument must be a number')
+  }
+  var buf = Buffer(size)
+  if (fill !== undefined) {
+    if (typeof encoding === 'string') {
+      buf.fill(fill, encoding)
+    } else {
+      buf.fill(fill)
+    }
+  } else {
+    buf.fill(0)
+  }
+  return buf
+}
+
+SafeBuffer.allocUnsafe = function (size) {
+  if (typeof size !== 'number') {
+    throw new TypeError('Argument must be a number')
+  }
+  return Buffer(size)
+}
+
+SafeBuffer.allocUnsafeSlow = function (size) {
+  if (typeof size !== 'number') {
+    throw new TypeError('Argument must be a number')
+  }
+  return buffer.SlowBuffer(size)
+}
+
+},{"buffer":3}],27:[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/readable.js');
+Stream.Writable = require('readable-stream/writable.js');
+Stream.Duplex = require('readable-stream/duplex.js');
+Stream.Transform = require('readable-stream/transform.js');
+Stream.PassThrough = require('readable-stream/passthrough.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":5,"inherits":7,"readable-stream/duplex.js":12,"readable-stream/passthrough.js":22,"readable-stream/readable.js":23,"readable-stream/transform.js":24,"readable-stream/writable.js":25}],28:[function(require,module,exports){
+arguments[4][21][0].apply(exports,arguments)
+},{"dup":21,"safe-buffer":26}],29:[function(require,module,exports){
+(function (setImmediate,clearImmediate){
+var nextTick = require('process/browser.js').nextTick;
+var apply = Function.prototype.apply;
+var slice = Array.prototype.slice;
+var immediateIds = {};
+var nextImmediateId = 0;
+
+// DOM APIs, for completeness
+
+exports.setTimeout = function() {
+  return new Timeout(apply.call(setTimeout, window, arguments), clearTimeout);
+};
+exports.setInterval = function() {
+  return new Timeout(apply.call(setInterval, window, arguments), clearInterval);
+};
+exports.clearTimeout =
+exports.clearInterval = function(timeout) { timeout.close(); };
+
+function Timeout(id, clearFn) {
+  this._id = id;
+  this._clearFn = clearFn;
+}
+Timeout.prototype.unref = Timeout.prototype.ref = function() {};
+Timeout.prototype.close = function() {
+  this._clearFn.call(window, this._id);
+};
+
+// Does not start the time, just sets up the members needed.
+exports.enroll = function(item, msecs) {
+  clearTimeout(item._idleTimeoutId);
+  item._idleTimeout = msecs;
+};
+
+exports.unenroll = function(item) {
+  clearTimeout(item._idleTimeoutId);
+  item._idleTimeout = -1;
+};
+
+exports._unrefActive = exports.active = function(item) {
+  clearTimeout(item._idleTimeoutId);
+
+  var msecs = item._idleTimeout;
+  if (msecs >= 0) {
+    item._idleTimeoutId = setTimeout(function onTimeout() {
+      if (item._onTimeout)
+        item._onTimeout();
+    }, msecs);
+  }
+};
+
+// That's not how node.js implements it but the exposed api is the same.
+exports.setImmediate = typeof setImmediate === "function" ? setImmediate : function(fn) {
+  var id = nextImmediateId++;
+  var args = arguments.length < 2 ? false : slice.call(arguments, 1);
+
+  immediateIds[id] = true;
+
+  nextTick(function onNextTick() {
+    if (immediateIds[id]) {
+      // fn.call() is faster so we optimize for the common use-case
+      // @see http://jsperf.com/call-apply-segu
+      if (args) {
+        fn.apply(null, args);
+      } else {
+        fn.call(null);
+      }
+      // Prevent ids from leaking
+      exports.clearImmediate(id);
+    }
+  });
+
+  return id;
+};
+
+exports.clearImmediate = typeof clearImmediate === "function" ? clearImmediate : function(id) {
+  delete immediateIds[id];
+};
+}).call(this,require("timers").setImmediate,require("timers").clearImmediate)
+},{"process/browser.js":11,"timers":29}],30:[function(require,module,exports){
+(function (global){
+
+/**
+ * Module exports.
+ */
+
+module.exports = deprecate;
+
+/**
+ * Mark that a method should not be used.
+ * Returns a modified function which warns once by default.
+ *
+ * If `localStorage.noDeprecation = true` is set, then it is a no-op.
+ *
+ * If `localStorage.throwDeprecation = true` is set, then deprecated functions
+ * will throw an Error when invoked.
+ *
+ * If `localStorage.traceDeprecation = true` is set, then deprecated functions
+ * will invoke `console.trace()` instead of `console.error()`.
+ *
+ * @param {Function} fn - the function to deprecate
+ * @param {String} msg - the string to print to the console when `fn` is invoked
+ * @returns {Function} a new "deprecated" version of `fn`
+ * @api public
+ */
+
+function deprecate (fn, msg) {
+  if (config('noDeprecation')) {
+    return fn;
+  }
+
+  var warned = false;
+  function deprecated() {
+    if (!warned) {
+      if (config('throwDeprecation')) {
+        throw new Error(msg);
+      } else if (config('traceDeprecation')) {
+        console.trace(msg);
+      } else {
+        console.warn(msg);
+      }
+      warned = true;
+    }
+    return fn.apply(this, arguments);
+  }
+
+  return deprecated;
+}
+
+/**
+ * Checks `localStorage` for boolean values for the given `name`.
+ *
+ * @param {String} name
+ * @returns {Boolean}
+ * @api private
+ */
+
+function config (name) {
+  // accessing global.localStorage can trigger a DOMException in sandboxed iframes
+  try {
+    if (!global.localStorage) return false;
+  } catch (_) {
+    return false;
+  }
+  var val = global.localStorage[name];
+  if (null == val) return false;
+  return String(val).toLowerCase() === 'true';
+}
+
+}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{}],31:[function(require,module,exports){
+(function (Buffer){
+;(function (sax) { // wrapper for non-node envs
+  sax.parser = function (strict, opt) { return new SAXParser(strict, opt) }
+  sax.SAXParser = SAXParser
+  sax.SAXStream = SAXStream
+  sax.createStream = createStream
+
+  // When we pass the MAX_BUFFER_LENGTH position, start checking for buffer overruns.
+  // When we check, schedule the next check for MAX_BUFFER_LENGTH - (max(buffer lengths)),
+  // since that's the earliest that a buffer overrun could occur.  This way, checks are
+  // as rare as required, but as often as necessary to ensure never crossing this bound.
+  // Furthermore, buffers are only tested at most once per write(), so passing a very
+  // large string into write() might have undesirable effects, but this is manageable by
+  // the caller, so it is assumed to be safe.  Thus, a call to write() may, in the extreme
+  // edge case, result in creating at most one complete copy of the string passed in.
+  // Set to Infinity to have unlimited buffers.
+  sax.MAX_BUFFER_LENGTH = 64 * 1024
+
+  var buffers = [
+    'comment', 'sgmlDecl', 'textNode', 'tagName', 'doctype',
+    'procInstName', 'procInstBody', 'entity', 'attribName',
+    'attribValue', 'cdata', 'script'
+  ]
+
+  sax.EVENTS = [
+    'text',
+    'processinginstruction',
+    'sgmldeclaration',
+    'doctype',
+    'comment',
+    'opentagstart',
+    'attribute',
+    'opentag',
+    'closetag',
+    'opencdata',
+    'cdata',
+    'closecdata',
+    'error',
+    'end',
+    'ready',
+    'script',
+    'opennamespace',
+    'closenamespace'
+  ]
+
+  function SAXParser (strict, opt) {
+    if (!(this instanceof SAXParser)) {
+      return new SAXParser(strict, opt)
+    }
+
+    var parser = this
+    clearBuffers(parser)
+    parser.q = parser.c = ''
+    parser.bufferCheckPosition = sax.MAX_BUFFER_LENGTH
+    parser.opt = opt || {}
+    parser.opt.lowercase = parser.opt.lowercase || parser.opt.lowercasetags
+    parser.looseCase = parser.opt.lowercase ? 'toLowerCase' : 'toUpperCase'
+    parser.tags = []
+    parser.closed = parser.closedRoot = parser.sawRoot = false
+    parser.tag = parser.error = null
+    parser.strict = !!strict
+    parser.noscript = !!(strict || parser.opt.noscript)
+    parser.state = S.BEGIN
+    parser.strictEntities = parser.opt.strictEntities
+    parser.ENTITIES = parser.strictEntities ? Object.create(sax.XML_ENTITIES) : Object.create(sax.ENTITIES)
+    parser.attribList = []
+
+    // namespaces form a prototype chain.
+    // it always points at the current tag,
+    // which protos to its parent tag.
+    if (parser.opt.xmlns) {
+      parser.ns = Object.create(rootNS)
+    }
+
+    // mostly just for error reporting
+    parser.trackPosition = parser.opt.position !== false
+    if (parser.trackPosition) {
+      parser.position = parser.line = parser.column = 0
+    }
+    emit(parser, 'onready')
+  }
+
+  if (!Object.create) {
+    Object.create = function (o) {
+      function F () {}
+      F.prototype = o
+      var newf = new F()
+      return newf
+    }
+  }
+
+  if (!Object.keys) {
+    Object.keys = function (o) {
+      var a = []
+      for (var i in o) if (o.hasOwnProperty(i)) a.push(i)
+      return a
+    }
+  }
+
+  function checkBufferLength (parser) {
+    var maxAllowed = Math.max(sax.MAX_BUFFER_LENGTH, 10)
+    var maxActual = 0
+    for (var i = 0, l = buffers.length; i < l; i++) {
+      var len = parser[buffers[i]].length
+      if (len > maxAllowed) {
+        // Text/cdata nodes can get big, and since they're buffered,
+        // we can get here under normal conditions.
+        // Avoid issues by emitting the text node now,
+        // so at least it won't get any bigger.
+        switch (buffers[i]) {
+          case 'textNode':
+            closeText(parser)
+            break
+
+          case 'cdata':
+            emitNode(parser, 'oncdata', parser.cdata)
+            parser.cdata = ''
+            break
+
+          case 'script':
+            emitNode(parser, 'onscript', parser.script)
+            parser.script = ''
+            break
+
+          default:
+            error(parser, 'Max buffer length exceeded: ' + buffers[i])
+        }
+      }
+      maxActual = Math.max(maxActual, len)
+    }
+    // schedule the next check for the earliest possible buffer overrun.
+    var m = sax.MAX_BUFFER_LENGTH - maxActual
+    parser.bufferCheckPosition = m + parser.position
+  }
+
+  function clearBuffers (parser) {
+    for (var i = 0, l = buffers.length; i < l; i++) {
+      parser[buffers[i]] = ''
+    }
+  }
+
+  function flushBuffers (parser) {
+    closeText(parser)
+    if (parser.cdata !== '') {
+      emitNode(parser, 'oncdata', parser.cdata)
+      parser.cdata = ''
+    }
+    if (parser.script !== '') {
+      emitNode(parser, 'onscript', parser.script)
+      parser.script = ''
+    }
+  }
+
+  SAXParser.prototype = {
+    end: function () { end(this) },
+    write: write,
+    resume: function () { this.error = null; return this },
+    close: function () { return this.write(null) },
+    flush: function () { flushBuffers(this) }
+  }
+
+  var Stream
+  try {
+    Stream = require('stream').Stream
+  } catch (ex) {
+    Stream = function () {}
+  }
+
+  var streamWraps = sax.EVENTS.filter(function (ev) {
+    return ev !== 'error' && ev !== 'end'
+  })
+
+  function createStream (strict, opt) {
+    return new SAXStream(strict, opt)
+  }
+
+  function SAXStream (strict, opt) {
+    if (!(this instanceof SAXStream)) {
+      return new SAXStream(strict, opt)
+    }
+
+    Stream.apply(this)
+
+    this._parser = new SAXParser(strict, opt)
+    this.writable = true
+    this.readable = true
+
+    var me = this
+
+    this._parser.onend = function () {
+      me.emit('end')
+    }
+
+    this._parser.onerror = function (er) {
+      me.emit('error', er)
+
+      // if didn't throw, then means error was handled.
+      // go ahead and clear error, so we can write again.
+      me._parser.error = null
+    }
+
+    this._decoder = null
+
+    streamWraps.forEach(function (ev) {
+      Object.defineProperty(me, 'on' + ev, {
+        get: function () {
+          return me._parser['on' + ev]
+        },
+        set: function (h) {
+          if (!h) {
+            me.removeAllListeners(ev)
+            me._parser['on' + ev] = h
+            return h
+          }
+          me.on(ev, h)
+        },
+        enumerable: true,
+        configurable: false
+      })
+    })
+  }
+
+  SAXStream.prototype = Object.create(Stream.prototype, {
+    constructor: {
+      value: SAXStream
+    }
+  })
+
+  SAXStream.prototype.write = function (data) {
+    if (typeof Buffer === 'function' &&
+      typeof Buffer.isBuffer === 'function' &&
+      Buffer.isBuffer(data)) {
+      if (!this._decoder) {
+        var SD = require('string_decoder').StringDecoder
+        this._decoder = new SD('utf8')
+      }
+      data = this._decoder.write(data)
+    }
+
+    this._parser.write(data.toString())
+    this.emit('data', data)
+    return true
+  }
+
+  SAXStream.prototype.end = function (chunk) {
+    if (chunk && chunk.length) {
+      this.write(chunk)
+    }
+    this._parser.end()
+    return true
+  }
+
+  SAXStream.prototype.on = function (ev, handler) {
+    var me = this
+    if (!me._parser['on' + ev] && streamWraps.indexOf(ev) !== -1) {
+      me._parser['on' + ev] = function () {
+        var args = arguments.length === 1 ? [arguments[0]] : Array.apply(null, arguments)
+        args.splice(0, 0, ev)
+        me.emit.apply(me, args)
+      }
+    }
+
+    return Stream.prototype.on.call(me, ev, handler)
+  }
+
+  // this really needs to be replaced with character classes.
+  // XML allows all manner of ridiculous numbers and digits.
+  var CDATA = '[CDATA['
+  var DOCTYPE = 'DOCTYPE'
+  var XML_NAMESPACE = 'http://www.w3.org/XML/1998/namespace'
+  var XMLNS_NAMESPACE = 'http://www.w3.org/2000/xmlns/'
+  var rootNS = { xml: XML_NAMESPACE, xmlns: XMLNS_NAMESPACE }
+
+  // http://www.w3.org/TR/REC-xml/#NT-NameStartChar
+  // This implementation works on strings, a single character at a time
+  // as such, it cannot ever support astral-plane characters (10000-EFFFF)
+  // without a significant breaking change to either this  parser, or the
+  // JavaScript language.  Implementation of an emoji-capable xml parser
+  // is left as an exercise for the reader.
+  var nameStart = /[:_A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]/
+
+  var nameBody = /[:_A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD\u00B7\u0300-\u036F\u203F-\u2040.\d-]/
+
+  var entityStart = /[#:_A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]/
+  var entityBody = /[#:_A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD\u00B7\u0300-\u036F\u203F-\u2040.\d-]/
+
+  function isWhitespace (c) {
+    return c === ' ' || c === '\n' || c === '\r' || c === '\t'
+  }
+
+  function isQuote (c) {
+    return c === '"' || c === '\''
+  }
+
+  function isAttribEnd (c) {
+    return c === '>' || isWhitespace(c)
+  }
+
+  function isMatch (regex, c) {
+    return regex.test(c)
+  }
+
+  function notMatch (regex, c) {
+    return !isMatch(regex, c)
+  }
+
+  var S = 0
+  sax.STATE = {
+    BEGIN: S++, // leading byte order mark or whitespace
+    BEGIN_WHITESPACE: S++, // leading whitespace
+    TEXT: S++, // general stuff
+    TEXT_ENTITY: S++, // &amp and such.
+    OPEN_WAKA: S++, // <
+    SGML_DECL: S++, // <!BLARG
+    SGML_DECL_QUOTED: S++, // <!BLARG foo "bar
+    DOCTYPE: S++, // <!DOCTYPE
+    DOCTYPE_QUOTED: S++, // <!DOCTYPE "//blah
+    DOCTYPE_DTD: S++, // <!DOCTYPE "//blah" [ ...
+    DOCTYPE_DTD_QUOTED: S++, // <!DOCTYPE "//blah" [ "foo
+    COMMENT_STARTING: S++, // <!-
+    COMMENT: S++, // <!--
+    COMMENT_ENDING: S++, // <!-- blah -
+    COMMENT_ENDED: S++, // <!-- blah --
+    CDATA: S++, // <![CDATA[ something
+    CDATA_ENDING: S++, // ]
+    CDATA_ENDING_2: S++, // ]]
+    PROC_INST: S++, // <?hi
+    PROC_INST_BODY: S++, // <?hi there
+    PROC_INST_ENDING: S++, // <?hi "there" ?
+    OPEN_TAG: S++, // <strong
+    OPEN_TAG_SLASH: S++, // <strong /
+    ATTRIB: S++, // <a
+    ATTRIB_NAME: S++, // <a foo
+    ATTRIB_NAME_SAW_WHITE: S++, // <a foo _
+    ATTRIB_VALUE: S++, // <a foo=
+    ATTRIB_VALUE_QUOTED: S++, // <a foo="bar
+    ATTRIB_VALUE_CLOSED: S++, // <a foo="bar"
+    ATTRIB_VALUE_UNQUOTED: S++, // <a foo=bar
+    ATTRIB_VALUE_ENTITY_Q: S++, // <foo bar="&quot;"
+    ATTRIB_VALUE_ENTITY_U: S++, // <foo bar=&quot
+    CLOSE_TAG: S++, // </a
+    CLOSE_TAG_SAW_WHITE: S++, // </a   >
+    SCRIPT: S++, // <script> ...
+    SCRIPT_ENDING: S++ // <script> ... <
+  }
+
+  sax.XML_ENTITIES = {
+    'amp': '&',
+    'gt': '>',
+    'lt': '<',
+    'quot': '"',
+    'apos': "'"
+  }
+
+  sax.ENTITIES = {
+    'amp': '&',
+    'gt': '>',
+    'lt': '<',
+    'quot': '"',
+    'apos': "'",
+    'AElig': 198,
+    'Aacute': 193,
+    'Acirc': 194,
+    'Agrave': 192,
+    'Aring': 197,
+    'Atilde': 195,
+    'Auml': 196,
+    'Ccedil': 199,
+    'ETH': 208,
+    'Eacute': 201,
+    'Ecirc': 202,
+    'Egrave': 200,
+    'Euml': 203,
+    'Iacute': 205,
+    'Icirc': 206,
+    'Igrave': 204,
+    'Iuml': 207,
+    'Ntilde': 209,
+    'Oacute': 211,
+    'Ocirc': 212,
+    'Ograve': 210,
+    'Oslash': 216,
+    'Otilde': 213,
+    'Ouml': 214,
+    'THORN': 222,
+    'Uacute': 218,
+    'Ucirc': 219,
+    'Ugrave': 217,
+    'Uuml': 220,
+    'Yacute': 221,
+    'aacute': 225,
+    'acirc': 226,
+    'aelig': 230,
+    'agrave': 224,
+    'aring': 229,
+    'atilde': 227,
+    'auml': 228,
+    'ccedil': 231,
+    'eacute': 233,
+    'ecirc': 234,
+    'egrave': 232,
+    'eth': 240,
+    'euml': 235,
+    'iacute': 237,
+    'icirc': 238,
+    'igrave': 236,
+    'iuml': 239,
+    'ntilde': 241,
+    'oacute': 243,
+    'ocirc': 244,
+    'ograve': 242,
+    'oslash': 248,
+    'otilde': 245,
+    'ouml': 246,
+    'szlig': 223,
+    'thorn': 254,
+    'uacute': 250,
+    'ucirc': 251,
+    'ugrave': 249,
+    'uuml': 252,
+    'yacute': 253,
+    'yuml': 255,
+    'copy': 169,
+    'reg': 174,
+    'nbsp': 160,
+    'iexcl': 161,
+    'cent': 162,
+    'pound': 163,
+    'curren': 164,
+    'yen': 165,
+    'brvbar': 166,
+    'sect': 167,
+    'uml': 168,
+    'ordf': 170,
+    'laquo': 171,
+    'not': 172,
+    'shy': 173,
+    'macr': 175,
+    'deg': 176,
+    'plusmn': 177,
+    'sup1': 185,
+    'sup2': 178,
+    'sup3': 179,
+    'acute': 180,
+    'micro': 181,
+    'para': 182,
+    'middot': 183,
+    'cedil': 184,
+    'ordm': 186,
+    'raquo': 187,
+    'frac14': 188,
+    'frac12': 189,
+    'frac34': 190,
+    'iquest': 191,
+    'times': 215,
+    'divide': 247,
+    'OElig': 338,
+    'oelig': 339,
+    'Scaron': 352,
+    'scaron': 353,
+    'Yuml': 376,
+    'fnof': 402,
+    'circ': 710,
+    'tilde': 732,
+    'Alpha': 913,
+    'Beta': 914,
+    'Gamma': 915,
+    'Delta': 916,
+    'Epsilon': 917,
+    'Zeta': 918,
+    'Eta': 919,
+    'Theta': 920,
+    'Iota': 921,
+    'Kappa': 922,
+    'Lambda': 923,
+    'Mu': 924,
+    'Nu': 925,
+    'Xi': 926,
+    'Omicron': 927,
+    'Pi': 928,
+    'Rho': 929,
+    'Sigma': 931,
+    'Tau': 932,
+    'Upsilon': 933,
+    'Phi': 934,
+    'Chi': 935,
+    'Psi': 936,
+    'Omega': 937,
+    'alpha': 945,
+    'beta': 946,
+    'gamma': 947,
+    'delta': 948,
+    'epsilon': 949,
+    'zeta': 950,
+    'eta': 951,
+    'theta': 952,
+    'iota': 953,
+    'kappa': 954,
+    'lambda': 955,
+    'mu': 956,
+    'nu': 957,
+    'xi': 958,
+    'omicron': 959,
+    'pi': 960,
+    'rho': 961,
+    'sigmaf': 962,
+    'sigma': 963,
+    'tau': 964,
+    'upsilon': 965,
+    'phi': 966,
+    'chi': 967,
+    'psi': 968,
+    'omega': 969,
+    'thetasym': 977,
+    'upsih': 978,
+    'piv': 982,
+    'ensp': 8194,
+    'emsp': 8195,
+    'thinsp': 8201,
+    'zwnj': 8204,
+    'zwj': 8205,
+    'lrm': 8206,
+    'rlm': 8207,
+    'ndash': 8211,
+    'mdash': 8212,
+    'lsquo': 8216,
+    'rsquo': 8217,
+    'sbquo': 8218,
+    'ldquo': 8220,
+    'rdquo': 8221,
+    'bdquo': 8222,
+    'dagger': 8224,
+    'Dagger': 8225,
+    'bull': 8226,
+    'hellip': 8230,
+    'permil': 8240,
+    'prime': 8242,
+    'Prime': 8243,
+    'lsaquo': 8249,
+    'rsaquo': 8250,
+    'oline': 8254,
+    'frasl': 8260,
+    'euro': 8364,
+    'image': 8465,
+    'weierp': 8472,
+    'real': 8476,
+    'trade': 8482,
+    'alefsym': 8501,
+    'larr': 8592,
+    'uarr': 8593,
+    'rarr': 8594,
+    'darr': 8595,
+    'harr': 8596,
+    'crarr': 8629,
+    'lArr': 8656,
+    'uArr': 8657,
+    'rArr': 8658,
+    'dArr': 8659,
+    'hArr': 8660,
+    'forall': 8704,
+    'part': 8706,
+    'exist': 8707,
+    'empty': 8709,
+    'nabla': 8711,
+    'isin': 8712,
+    'notin': 8713,
+    'ni': 8715,
+    'prod': 8719,
+    'sum': 8721,
+    'minus': 8722,
+    'lowast': 8727,
+    'radic': 8730,
+    'prop': 8733,
+    'infin': 8734,
+    'ang': 8736,
+    'and': 8743,
+    'or': 8744,
+    'cap': 8745,
+    'cup': 8746,
+    'int': 8747,
+    'there4': 8756,
+    'sim': 8764,
+    'cong': 8773,
+    'asymp': 8776,
+    'ne': 8800,
+    'equiv': 8801,
+    'le': 8804,
+    'ge': 8805,
+    'sub': 8834,
+    'sup': 8835,
+    'nsub': 8836,
+    'sube': 8838,
+    'supe': 8839,
+    'oplus': 8853,
+    'otimes': 8855,
+    'perp': 8869,
+    'sdot': 8901,
+    'lceil': 8968,
+    'rceil': 8969,
+    'lfloor': 8970,
+    'rfloor': 8971,
+    'lang': 9001,
+    'rang': 9002,
+    'loz': 9674,
+    'spades': 9824,
+    'clubs': 9827,
+    'hearts': 9829,
+    'diams': 9830
+  }
+
+  Object.keys(sax.ENTITIES).forEach(function (key) {
+    var e = sax.ENTITIES[key]
+    var s = typeof e === 'number' ? String.fromCharCode(e) : e
+    sax.ENTITIES[key] = s
+  })
+
+  for (var s in sax.STATE) {
+    sax.STATE[sax.STATE[s]] = s
+  }
+
+  // shorthand
+  S = sax.STATE
+
+  function emit (parser, event, data) {
+    parser[event] && parser[event](data)
+  }
+
+  function emitNode (parser, nodeType, data) {
+    if (parser.textNode) closeText(parser)
+    emit(parser, nodeType, data)
+  }
+
+  function closeText (parser) {
+    parser.textNode = textopts(parser.opt, parser.textNode)
+    if (parser.textNode) emit(parser, 'ontext', parser.textNode)
+    parser.textNode = ''
+  }
+
+  function textopts (opt, text) {
+    if (opt.trim) text = text.trim()
+    if (opt.normalize) text = text.replace(/\s+/g, ' ')
+    return text
+  }
+
+  function error (parser, er) {
+    closeText(parser)
+    if (parser.trackPosition) {
+      er += '\nLine: ' + parser.line +
+        '\nColumn: ' + parser.column +
+        '\nChar: ' + parser.c
+    }
+    er = new Error(er)
+    parser.error = er
+    emit(parser, 'onerror', er)
+    return parser
+  }
+
+  function end (parser) {
+    if (parser.sawRoot && !parser.closedRoot) strictFail(parser, 'Unclosed root tag')
+    if ((parser.state !== S.BEGIN) &&
+      (parser.state !== S.BEGIN_WHITESPACE) &&
+      (parser.state !== S.TEXT)) {
+      error(parser, 'Unexpected end')
+    }
+    closeText(parser)
+    parser.c = ''
+    parser.closed = true
+    emit(parser, 'onend')
+    SAXParser.call(parser, parser.strict, parser.opt)
+    return parser
+  }
+
+  function strictFail (parser, message) {
+    if (typeof parser !== 'object' || !(parser instanceof SAXParser)) {
+      throw new Error('bad call to strictFail')
+    }
+    if (parser.strict) {
+      error(parser, message)
+    }
+  }
+
+  function newTag (parser) {
+    if (!parser.strict) parser.tagName = parser.tagName[parser.looseCase]()
+    var parent = parser.tags[parser.tags.length - 1] || parser
+    var tag = parser.tag = { name: parser.tagName, attributes: {} }
+
+    // will be overridden if tag contails an xmlns="foo" or xmlns:foo="bar"
+    if (parser.opt.xmlns) {
+      tag.ns = parent.ns
+    }
+    parser.attribList.length = 0
+    emitNode(parser, 'onopentagstart', tag)
+  }
+
+  function qname (name, attribute) {
+    var i = name.indexOf(':')
+    var qualName = i < 0 ? [ '', name ] : name.split(':')
+    var prefix = qualName[0]
+    var local = qualName[1]
+
+    // <x "xmlns"="http://foo">
+    if (attribute && name === 'xmlns') {
+      prefix = 'xmlns'
+      local = ''
+    }
+
+    return { prefix: prefix, local: local }
+  }
+
+  function attrib (parser) {
+    if (!parser.strict) {
+      parser.attribName = parser.attribName[parser.looseCase]()
+    }
+
+    if (parser.attribList.indexOf(parser.attribName) !== -1 ||
+      parser.tag.attributes.hasOwnProperty(parser.attribName)) {
+      parser.attribName = parser.attribValue = ''
+      return
+    }
+
+    if (parser.opt.xmlns) {
+      var qn = qname(parser.attribName, true)
+      var prefix = qn.prefix
+      var local = qn.local
+
+      if (prefix === 'xmlns') {
+        // namespace binding attribute. push the binding into scope
+        if (local === 'xml' && parser.attribValue !== XML_NAMESPACE) {
+          strictFail(parser,
+            'xml: prefix must be bound to ' + XML_NAMESPACE + '\n' +
+            'Actual: ' + parser.attribValue)
+        } else if (local === 'xmlns' && parser.attribValue !== XMLNS_NAMESPACE) {
+          strictFail(parser,
+            'xmlns: prefix must be bound to ' + XMLNS_NAMESPACE + '\n' +
+            'Actual: ' + parser.attribValue)
+        } else {
+          var tag = parser.tag
+          var parent = parser.tags[parser.tags.length - 1] || parser
+          if (tag.ns === parent.ns) {
+            tag.ns = Object.create(parent.ns)
+          }
+          tag.ns[local] = parser.attribValue
+        }
+      }
+
+      // defer onattribute events until all attributes have been seen
+      // so any new bindings can take effect. preserve attribute order
+      // so deferred events can be emitted in document order
+      parser.attribList.push([parser.attribName, parser.attribValue])
+    } else {
+      // in non-xmlns mode, we can emit the event right away
+      parser.tag.attributes[parser.attribName] = parser.attribValue
+      emitNode(parser, 'onattribute', {
+        name: parser.attribName,
+        value: parser.attribValue
+      })
+    }
+
+    parser.attribName = parser.attribValue = ''
+  }
+
+  function openTag (parser, selfClosing) {
+    if (parser.opt.xmlns) {
+      // emit namespace binding events
+      var tag = parser.tag
+
+      // add namespace info to tag
+      var qn = qname(parser.tagName)
+      tag.prefix = qn.prefix
+      tag.local = qn.local
+      tag.uri = tag.ns[qn.prefix] || ''
+
+      if (tag.prefix && !tag.uri) {
+        strictFail(parser, 'Unbound namespace prefix: ' +
+          JSON.stringify(parser.tagName))
+        tag.uri = qn.prefix
+      }
+
+      var parent = parser.tags[parser.tags.length - 1] || parser
+      if (tag.ns && parent.ns !== tag.ns) {
+        Object.keys(tag.ns).forEach(function (p) {
+          emitNode(parser, 'onopennamespace', {
+            prefix: p,
+            uri: tag.ns[p]
+          })
+        })
+      }
+
+      // handle deferred onattribute events
+      // Note: do not apply default ns to attributes:
+      //   http://www.w3.org/TR/REC-xml-names/#defaulting
+      for (var i = 0, l = parser.attribList.length; i < l; i++) {
+        var nv = parser.attribList[i]
+        var name = nv[0]
+        var value = nv[1]
+        var qualName = qname(name, true)
+        var prefix = qualName.prefix
+        var local = qualName.local
+        var uri = prefix === '' ? '' : (tag.ns[prefix] || '')
+        var a = {
+          name: name,
+          value: value,
+          prefix: prefix,
+          local: local,
+          uri: uri
+        }
+
+        // if there's any attributes with an undefined namespace,
+        // then fail on them now.
+        if (prefix && prefix !== 'xmlns' && !uri) {
+          strictFail(parser, 'Unbound namespace prefix: ' +
+            JSON.stringify(prefix))
+          a.uri = prefix
+        }
+        parser.tag.attributes[name] = a
+        emitNode(parser, 'onattribute', a)
+      }
+      parser.attribList.length = 0
+    }
+
+    parser.tag.isSelfClosing = !!selfClosing
+
+    // process the tag
+    parser.sawRoot = true
+    parser.tags.push(parser.tag)
+    emitNode(parser, 'onopentag', parser.tag)
+    if (!selfClosing) {
+      // special case for <script> in non-strict mode.
+      if (!parser.noscript && parser.tagName.toLowerCase() === 'script') {
+        parser.state = S.SCRIPT
+      } else {
+        parser.state = S.TEXT
+      }
+      parser.tag = null
+      parser.tagName = ''
+    }
+    parser.attribName = parser.attribValue = ''
+    parser.attribList.length = 0
+  }
+
+  function closeTag (parser) {
+    if (!parser.tagName) {
+      strictFail(parser, 'Weird empty close tag.')
+      parser.textNode += '</>'
+      parser.state = S.TEXT
+      return
+    }
+
+    if (parser.script) {
+      if (parser.tagName !== 'script') {
+        parser.script += '</' + parser.tagName + '>'
+        parser.tagName = ''
+        parser.state = S.SCRIPT
+        return
+      }
+      emitNode(parser, 'onscript', parser.script)
+      parser.script = ''
+    }
+
+    // first make sure that the closing tag actually exists.
+    // <a><b></c></b></a> will close everything, otherwise.
+    var t = parser.tags.length
+    var tagName = parser.tagName
+    if (!parser.strict) {
+      tagName = tagName[parser.looseCase]()
+    }
+    var closeTo = tagName
+    while (t--) {
+      var close = parser.tags[t]
+      if (close.name !== closeTo) {
+        // fail the first time in strict mode
+        strictFail(parser, 'Unexpected close tag')
+      } else {
+        break
+      }
+    }
+
+    // didn't find it.  we already failed for strict, so just abort.
+    if (t < 0) {
+      strictFail(parser, 'Unmatched closing tag: ' + parser.tagName)
+      parser.textNode += '</' + parser.tagName + '>'
+      parser.state = S.TEXT
+      return
+    }
+    parser.tagName = tagName
+    var s = parser.tags.length
+    while (s-- > t) {
+      var tag = parser.tag = parser.tags.pop()
+      parser.tagName = parser.tag.name
+      emitNode(parser, 'onclosetag', parser.tagName)
+
+      var x = {}
+      for (var i in tag.ns) {
+        x[i] = tag.ns[i]
+      }
+
+      var parent = parser.tags[parser.tags.length - 1] || parser
+      if (parser.opt.xmlns && tag.ns !== parent.ns) {
+        // remove namespace bindings introduced by tag
+        Object.keys(tag.ns).forEach(function (p) {
+          var n = tag.ns[p]
+          emitNode(parser, 'onclosenamespace', { prefix: p, uri: n })
+        })
+      }
+    }
+    if (t === 0) parser.closedRoot = true
+    parser.tagName = parser.attribValue = parser.attribName = ''
+    parser.attribList.length = 0
+    parser.state = S.TEXT
+  }
+
+  function parseEntity (parser) {
+    var entity = parser.entity
+    var entityLC = entity.toLowerCase()
+    var num
+    var numStr = ''
+
+    if (parser.ENTITIES[entity]) {
+      return parser.ENTITIES[entity]
+    }
+    if (parser.ENTITIES[entityLC]) {
+      return parser.ENTITIES[entityLC]
+    }
+    entity = entityLC
+    if (entity.charAt(0) === '#') {
+      if (entity.charAt(1) === 'x') {
+        entity = entity.slice(2)
+        num = parseInt(entity, 16)
+        numStr = num.toString(16)
+      } else {
+        entity = entity.slice(1)
+        num = parseInt(entity, 10)
+        numStr = num.toString(10)
+      }
+    }
+    entity = entity.replace(/^0+/, '')
+    if (isNaN(num) || numStr.toLowerCase() !== entity) {
+      strictFail(parser, 'Invalid character entity')
+      return '&' + parser.entity + ';'
+    }
+
+    return String.fromCodePoint(num)
+  }
+
+  function beginWhiteSpace (parser, c) {
+    if (c === '<') {
+      parser.state = S.OPEN_WAKA
+      parser.startTagPosition = parser.position
+    } else if (!isWhitespace(c)) {
+      // have to process this as a text node.
+      // weird, but happens.
+      strictFail(parser, 'Non-whitespace before first tag.')
+      parser.textNode = c
+      parser.state = S.TEXT
+    }
+  }
+
+  function charAt (chunk, i) {
+    var result = ''
+    if (i < chunk.length) {
+      result = chunk.charAt(i)
+    }
+    return result
+  }
+
+  function write (chunk) {
+    var parser = this
+    if (this.error) {
+      throw this.error
+    }
+    if (parser.closed) {
+      return error(parser,
+        'Cannot write after close. Assign an onready handler.')
+    }
+    if (chunk === null) {
+      return end(parser)
+    }
+    if (typeof chunk === 'object') {
+      chunk = chunk.toString()
+    }
+    var i = 0
+    var c = ''
+    while (true) {
+      c = charAt(chunk, i++)
+      parser.c = c
+
+      if (!c) {
+        break
+      }
+
+      if (parser.trackPosition) {
+        parser.position++
+        if (c === '\n') {
+          parser.line++
+          parser.column = 0
+        } else {
+          parser.column++
+        }
+      }
+
+      switch (parser.state) {
+        case S.BEGIN:
+          parser.state = S.BEGIN_WHITESPACE
+          if (c === '\uFEFF') {
+            continue
+          }
+          beginWhiteSpace(parser, c)
+          continue
+
+        case S.BEGIN_WHITESPACE:
+          beginWhiteSpace(parser, c)
+          continue
+
+        case S.TEXT:
+          if (parser.sawRoot && !parser.closedRoot) {
+            var starti = i - 1
+            while (c && c !== '<' && c !== '&') {
+              c = charAt(chunk, i++)
+              if (c && parser.trackPosition) {
+                parser.position++
+                if (c === '\n') {
+                  parser.line++
+                  parser.column = 0
+                } else {
+                  parser.column++
+                }
+              }
+            }
+            parser.textNode += chunk.substring(starti, i - 1)
+          }
+          if (c === '<' && !(parser.sawRoot && parser.closedRoot && !parser.strict)) {
+            parser.state = S.OPEN_WAKA
+            parser.startTagPosition = parser.position
+          } else {
+            if (!isWhitespace(c) && (!parser.sawRoot || parser.closedRoot)) {
+              strictFail(parser, 'Text data outside of root node.')
+            }
+            if (c === '&') {
+              parser.state = S.TEXT_ENTITY
+            } else {
+              parser.textNode += c
+            }
+          }
+          continue
+
+        case S.SCRIPT:
+          // only non-strict
+          if (c === '<') {
+            parser.state = S.SCRIPT_ENDING
+          } else {
+            parser.script += c
+          }
+          continue
+
+        case S.SCRIPT_ENDING:
+          if (c === '/') {
+            parser.state = S.CLOSE_TAG
+          } else {
+            parser.script += '<' + c
+            parser.state = S.SCRIPT
+          }
+          continue
+
+        case S.OPEN_WAKA:
+          // either a /, ?, !, or text is coming next.
+          if (c === '!') {
+            parser.state = S.SGML_DECL
+            parser.sgmlDecl = ''
+          } else if (isWhitespace(c)) {
+            // wait for it...
+          } else if (isMatch(nameStart, c)) {
+            parser.state = S.OPEN_TAG
+            parser.tagName = c
+          } else if (c === '/') {
+            parser.state = S.CLOSE_TAG
+            parser.tagName = ''
+          } else if (c === '?') {
+            parser.state = S.PROC_INST
+            parser.procInstName = parser.procInstBody = ''
+          } else {
+            strictFail(parser, 'Unencoded <')
+            // if there was some whitespace, then add that in.
+            if (parser.startTagPosition + 1 < parser.position) {
+              var pad = parser.position - parser.startTagPosition
+              c = new Array(pad).join(' ') + c
+            }
+            parser.textNode += '<' + c
+            parser.state = S.TEXT
+          }
+          continue
+
+        case S.SGML_DECL:
+          if ((parser.sgmlDecl + c).toUpperCase() === CDATA) {
+            emitNode(parser, 'onopencdata')
+            parser.state = S.CDATA
+            parser.sgmlDecl = ''
+            parser.cdata = ''
+          } else if (parser.sgmlDecl + c === '--') {
+            parser.state = S.COMMENT
+            parser.comment = ''
+            parser.sgmlDecl = ''
+          } else if ((parser.sgmlDecl + c).toUpperCase() === DOCTYPE) {
+            parser.state = S.DOCTYPE
+            if (parser.doctype || parser.sawRoot) {
+              strictFail(parser,
+                'Inappropriately located doctype declaration')
+            }
+            parser.doctype = ''
+            parser.sgmlDecl = ''
+          } else if (c === '>') {
+            emitNode(parser, 'onsgmldeclaration', parser.sgmlDecl)
+            parser.sgmlDecl = ''
+            parser.state = S.TEXT
+          } else if (isQuote(c)) {
+            parser.state = S.SGML_DECL_QUOTED
+            parser.sgmlDecl += c
+          } else {
+            parser.sgmlDecl += c
+          }
+          continue
+
+        case S.SGML_DECL_QUOTED:
+          if (c === parser.q) {
+            parser.state = S.SGML_DECL
+            parser.q = ''
+          }
+          parser.sgmlDecl += c
+          continue
+
+        case S.DOCTYPE:
+          if (c === '>') {
+            parser.state = S.TEXT
+            emitNode(parser, 'ondoctype', parser.doctype)
+            parser.doctype = true // just remember that we saw it.
+          } else {
+            parser.doctype += c
+            if (c === '[') {
+              parser.state = S.DOCTYPE_DTD
+            } else if (isQuote(c)) {
+              parser.state = S.DOCTYPE_QUOTED
+              parser.q = c
+            }
+          }
+          continue
+
+        case S.DOCTYPE_QUOTED:
+          parser.doctype += c
+          if (c === parser.q) {
+            parser.q = ''
+            parser.state = S.DOCTYPE
+          }
+          continue
+
+        case S.DOCTYPE_DTD:
+          parser.doctype += c
+          if (c === ']') {
+            parser.state = S.DOCTYPE
+          } else if (isQuote(c)) {
+            parser.state = S.DOCTYPE_DTD_QUOTED
+            parser.q = c
+          }
+          continue
+
+        case S.DOCTYPE_DTD_QUOTED:
+          parser.doctype += c
+          if (c === parser.q) {
+            parser.state = S.DOCTYPE_DTD
+            parser.q = ''
+          }
+          continue
+
+        case S.COMMENT:
+          if (c === '-') {
+            parser.state = S.COMMENT_ENDING
+          } else {
+            parser.comment += c
+          }
+          continue
+
+        case S.COMMENT_ENDING:
+          if (c === '-') {
+            parser.state = S.COMMENT_ENDED
+            parser.comment = textopts(parser.opt, parser.comment)
+            if (parser.comment) {
+              emitNode(parser, 'oncomment', parser.comment)
+            }
+            parser.comment = ''
+          } else {
+            parser.comment += '-' + c
+            parser.state = S.COMMENT
+          }
+          continue
+
+        case S.COMMENT_ENDED:
+          if (c !== '>') {
+            strictFail(parser, 'Malformed comment')
+            // allow <!-- blah -- bloo --> in non-strict mode,
+            // which is a comment of " blah -- bloo "
+            parser.comment += '--' + c
+            parser.state = S.COMMENT
+          } else {
+            parser.state = S.TEXT
+          }
+          continue
+
+        case S.CDATA:
+          if (c === ']') {
+            parser.state = S.CDATA_ENDING
+          } else {
+            parser.cdata += c
+          }
+          continue
+
+        case S.CDATA_ENDING:
+          if (c === ']') {
+            parser.state = S.CDATA_ENDING_2
+          } else {
+            parser.cdata += ']' + c
+            parser.state = S.CDATA
+          }
+          continue
+
+        case S.CDATA_ENDING_2:
+          if (c === '>') {
+            if (parser.cdata) {
+              emitNode(parser, 'oncdata', parser.cdata)
+            }
+            emitNode(parser, 'onclosecdata')
+            parser.cdata = ''
+            parser.state = S.TEXT
+          } else if (c === ']') {
+            parser.cdata += ']'
+          } else {
+            parser.cdata += ']]' + c
+            parser.state = S.CDATA
+          }
+          continue
+
+        case S.PROC_INST:
+          if (c === '?') {
+            parser.state = S.PROC_INST_ENDING
+          } else if (isWhitespace(c)) {
+            parser.state = S.PROC_INST_BODY
+          } else {
+            parser.procInstName += c
+          }
+          continue
+
+        case S.PROC_INST_BODY:
+          if (!parser.procInstBody && isWhitespace(c)) {
+            continue
+          } else if (c === '?') {
+            parser.state = S.PROC_INST_ENDING
+          } else {
+            parser.procInstBody += c
+          }
+          continue
+
+        case S.PROC_INST_ENDING:
+          if (c === '>') {
+            emitNode(parser, 'onprocessinginstruction', {
+              name: parser.procInstName,
+              body: parser.procInstBody
+            })
+            parser.procInstName = parser.procInstBody = ''
+            parser.state = S.TEXT
+          } else {
+            parser.procInstBody += '?' + c
+            parser.state = S.PROC_INST_BODY
+          }
+          continue
+
+        case S.OPEN_TAG:
+          if (isMatch(nameBody, c)) {
+            parser.tagName += c
+          } else {
+            newTag(parser)
+            if (c === '>') {
+              openTag(parser)
+            } else if (c === '/') {
+              parser.state = S.OPEN_TAG_SLASH
+            } else {
+              if (!isWhitespace(c)) {
+                strictFail(parser, 'Invalid character in tag name')
+              }
+              parser.state = S.ATTRIB
+            }
+          }
+          continue
+
+        case S.OPEN_TAG_SLASH:
+          if (c === '>') {
+            openTag(parser, true)
+            closeTag(parser)
+          } else {
+            strictFail(parser, 'Forward-slash in opening tag not followed by >')
+            parser.state = S.ATTRIB
+          }
+          continue
+
+        case S.ATTRIB:
+          // haven't read the attribute name yet.
+          if (isWhitespace(c)) {
+            continue
+          } else if (c === '>') {
+            openTag(parser)
+          } else if (c === '/') {
+            parser.state = S.OPEN_TAG_SLASH
+          } else if (isMatch(nameStart, c)) {
+            parser.attribName = c
+            parser.attribValue = ''
+            parser.state = S.ATTRIB_NAME
+          } else {
+            strictFail(parser, 'Invalid attribute name')
+          }
+          continue
+
+        case S.ATTRIB_NAME:
+          if (c === '=') {
+            parser.state = S.ATTRIB_VALUE
+          } else if (c === '>') {
+            strictFail(parser, 'Attribute without value')
+            parser.attribValue = parser.attribName
+            attrib(parser)
+            openTag(parser)
+          } else if (isWhitespace(c)) {
+            parser.state = S.ATTRIB_NAME_SAW_WHITE
+          } else if (isMatch(nameBody, c)) {
+            parser.attribName += c
+          } else {
+            strictFail(parser, 'Invalid attribute name')
+          }
+          continue
+
+        case S.ATTRIB_NAME_SAW_WHITE:
+          if (c === '=') {
+            parser.state = S.ATTRIB_VALUE
+          } else if (isWhitespace(c)) {
+            continue
+          } else {
+            strictFail(parser, 'Attribute without value')
+            parser.tag.attributes[parser.attribName] = ''
+            parser.attribValue = ''
+            emitNode(parser, 'onattribute', {
+              name: parser.attribName,
+              value: ''
+            })
+            parser.attribName = ''
+            if (c === '>') {
+              openTag(parser)
+            } else if (isMatch(nameStart, c)) {
+              parser.attribName = c
+              parser.state = S.ATTRIB_NAME
+            } else {
+              strictFail(parser, 'Invalid attribute name')
+              parser.state = S.ATTRIB
+            }
+          }
+          continue
+
+        case S.ATTRIB_VALUE:
+          if (isWhitespace(c)) {
+            continue
+          } else if (isQuote(c)) {
+            parser.q = c
+            parser.state = S.ATTRIB_VALUE_QUOTED
+          } else {
+            strictFail(parser, 'Unquoted attribute value')
+            parser.state = S.ATTRIB_VALUE_UNQUOTED
+            parser.attribValue = c
+          }
+          continue
+
+        case S.ATTRIB_VALUE_QUOTED:
+          if (c !== parser.q) {
+            if (c === '&') {
+              parser.state = S.ATTRIB_VALUE_ENTITY_Q
+            } else {
+              parser.attribValue += c
+            }
+            continue
+          }
+          attrib(parser)
+          parser.q = ''
+          parser.state = S.ATTRIB_VALUE_CLOSED
+          continue
+
+        case S.ATTRIB_VALUE_CLOSED:
+          if (isWhitespace(c)) {
+            parser.state = S.ATTRIB
+          } else if (c === '>') {
+            openTag(parser)
+          } else if (c === '/') {
+            parser.state = S.OPEN_TAG_SLASH
+          } else if (isMatch(nameStart, c)) {
+            strictFail(parser, 'No whitespace between attributes')
+            parser.attribName = c
+            parser.attribValue = ''
+            parser.state = S.ATTRIB_NAME
+          } else {
+            strictFail(parser, 'Invalid attribute name')
+          }
+          continue
+
+        case S.ATTRIB_VALUE_UNQUOTED:
+          if (!isAttribEnd(c)) {
+            if (c === '&') {
+              parser.state = S.ATTRIB_VALUE_ENTITY_U
+            } else {
+              parser.attribValue += c
+            }
+            continue
+          }
+          attrib(parser)
+          if (c === '>') {
+            openTag(parser)
+          } else {
+            parser.state = S.ATTRIB
+          }
+          continue
+
+        case S.CLOSE_TAG:
+          if (!parser.tagName) {
+            if (isWhitespace(c)) {
+              continue
+            } else if (notMatch(nameStart, c)) {
+              if (parser.script) {
+                parser.script += '</' + c
+                parser.state = S.SCRIPT
+              } else {
+                strictFail(parser, 'Invalid tagname in closing tag.')
+              }
+            } else {
+              parser.tagName = c
+            }
+          } else if (c === '>') {
+            closeTag(parser)
+          } else if (isMatch(nameBody, c)) {
+            parser.tagName += c
+          } else if (parser.script) {
+            parser.script += '</' + parser.tagName
+            parser.tagName = ''
+            parser.state = S.SCRIPT
+          } else {
+            if (!isWhitespace(c)) {
+              strictFail(parser, 'Invalid tagname in closing tag')
+            }
+            parser.state = S.CLOSE_TAG_SAW_WHITE
+          }
+          continue
+
+        case S.CLOSE_TAG_SAW_WHITE:
+          if (isWhitespace(c)) {
+            continue
+          }
+          if (c === '>') {
+            closeTag(parser)
+          } else {
+            strictFail(parser, 'Invalid characters in closing tag')
+          }
+          continue
+
+        case S.TEXT_ENTITY:
+        case S.ATTRIB_VALUE_ENTITY_Q:
+        case S.ATTRIB_VALUE_ENTITY_U:
+          var returnState
+          var buffer
+          switch (parser.state) {
+            case S.TEXT_ENTITY:
+              returnState = S.TEXT
+              buffer = 'textNode'
+              break
+
+            case S.ATTRIB_VALUE_ENTITY_Q:
+              returnState = S.ATTRIB_VALUE_QUOTED
+              buffer = 'attribValue'
+              break
+
+            case S.ATTRIB_VALUE_ENTITY_U:
+              returnState = S.ATTRIB_VALUE_UNQUOTED
+              buffer = 'attribValue'
+              break
+          }
+
+          if (c === ';') {
+            parser[buffer] += parseEntity(parser)
+            parser.entity = ''
+            parser.state = returnState
+          } else if (isMatch(parser.entity.length ? entityBody : entityStart, c)) {
+            parser.entity += c
+          } else {
+            strictFail(parser, 'Invalid character in entity name')
+            parser[buffer] += '&' + parser.entity + c
+            parser.entity = ''
+            parser.state = returnState
+          }
+
+          continue
+
+        default:
+          throw new Error(parser, 'Unknown state: ' + parser.state)
+      }
+    } // while
+
+    if (parser.position >= parser.bufferCheckPosition) {
+      checkBufferLength(parser)
+    }
+    return parser
+  }
+
+  /*! http://mths.be/fromcodepoint v0.1.0 by @mathias */
+  /* istanbul ignore next */
+  if (!String.fromCodePoint) {
+    (function () {
+      var stringFromCharCode = String.fromCharCode
+      var floor = Math.floor
+      var fromCodePoint = function () {
+        var MAX_SIZE = 0x4000
+        var codeUnits = []
+        var highSurrogate
+        var lowSurrogate
+        var index = -1
+        var length = arguments.length
+        if (!length) {
+          return ''
+        }
+        var result = ''
+        while (++index < length) {
+          var codePoint = Number(arguments[index])
+          if (
+            !isFinite(codePoint) || // `NaN`, `+Infinity`, or `-Infinity`
+            codePoint < 0 || // not a valid Unicode code point
+            codePoint > 0x10FFFF || // not a valid Unicode code point
+            floor(codePoint) !== codePoint // not an integer
+          ) {
+            throw RangeError('Invalid code point: ' + codePoint)
+          }
+          if (codePoint <= 0xFFFF) { // BMP code point
+            codeUnits.push(codePoint)
+          } else { // Astral code point; split in surrogate halves
+            // http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
+            codePoint -= 0x10000
+            highSurrogate = (codePoint >> 10) + 0xD800
+            lowSurrogate = (codePoint % 0x400) + 0xDC00
+            codeUnits.push(highSurrogate, lowSurrogate)
+          }
+          if (index + 1 === length || codeUnits.length > MAX_SIZE) {
+            result += stringFromCharCode.apply(null, codeUnits)
+            codeUnits.length = 0
+          }
+        }
+        return result
+      }
+      /* istanbul ignore next */
+      if (Object.defineProperty) {
+        Object.defineProperty(String, 'fromCodePoint', {
+          value: fromCodePoint,
+          configurable: true,
+          writable: true
+        })
+      } else {
+        String.fromCodePoint = fromCodePoint
+      }
+    }())
+  }
+})(typeof exports === 'undefined' ? this.sax = {} : exports)
+
+}).call(this,require("buffer").Buffer)
+},{"buffer":3,"stream":27,"string_decoder":28}],32:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  "use strict";
+  exports.stripBOM = function(str) {
+    if (str[0] === '\uFEFF') {
+      return str.substring(1);
+    } else {
+      return str;
+    }
+  };
+
+}).call(this);
+
+},{}],33:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  "use strict";
+  var builder, defaults, escapeCDATA, requiresCDATA, wrapCDATA,
+    hasProp = {}.hasOwnProperty;
+
+  builder = require('xmlbuilder');
+
+  defaults = require('./defaults').defaults;
+
+  requiresCDATA = function(entry) {
+    return typeof entry === "string" && (entry.indexOf('&') >= 0 || entry.indexOf('>') >= 0 || entry.indexOf('<') >= 0);
+  };
+
+  wrapCDATA = function(entry) {
+    return "<![CDATA[" + (escapeCDATA(entry)) + "]]>";
+  };
+
+  escapeCDATA = function(entry) {
+    return entry.replace(']]>', ']]]]><![CDATA[>');
+  };
+
+  exports.Builder = (function() {
+    function Builder(opts) {
+      var key, ref, value;
+      this.options = {};
+      ref = defaults["0.2"];
+      for (key in ref) {
+        if (!hasProp.call(ref, key)) continue;
+        value = ref[key];
+        this.options[key] = value;
+      }
+      for (key in opts) {
+        if (!hasProp.call(opts, key)) continue;
+        value = opts[key];
+        this.options[key] = value;
+      }
+    }
+
+    Builder.prototype.buildObject = function(rootObj) {
+      var attrkey, charkey, render, rootElement, rootName;
+      attrkey = this.options.attrkey;
+      charkey = this.options.charkey;
+      if ((Object.keys(rootObj).length === 1) && (this.options.rootName === defaults['0.2'].rootName)) {
+        rootName = Object.keys(rootObj)[0];
+        rootObj = rootObj[rootName];
+      } else {
+        rootName = this.options.rootName;
+      }
+      render = (function(_this) {
+        return function(element, obj) {
+          var attr, child, entry, index, key, value;
+          if (typeof obj !== 'object') {
+            if (_this.options.cdata && requiresCDATA(obj)) {
+              element.raw(wrapCDATA(obj));
+            } else {
+              element.txt(obj);
+            }
+          } else if (Array.isArray(obj)) {
+            for (index in obj) {
+              if (!hasProp.call(obj, index)) continue;
+              child = obj[index];
+              for (key in child) {
+                entry = child[key];
+                element = render(element.ele(key), entry).up();
+              }
+            }
+          } else {
+            for (key in obj) {
+              if (!hasProp.call(obj, key)) continue;
+              child = obj[key];
+              if (key === attrkey) {
+                if (typeof child === "object") {
+                  for (attr in child) {
+                    value = child[attr];
+                    element = element.att(attr, value);
+                  }
+                }
+              } else if (key === charkey) {
+                if (_this.options.cdata && requiresCDATA(child)) {
+                  element = element.raw(wrapCDATA(child));
+                } else {
+                  element = element.txt(child);
+                }
+              } else if (Array.isArray(child)) {
+                for (index in child) {
+                  if (!hasProp.call(child, index)) continue;
+                  entry = child[index];
+                  if (typeof entry === 'string') {
+                    if (_this.options.cdata && requiresCDATA(entry)) {
+                      element = element.ele(key).raw(wrapCDATA(entry)).up();
+                    } else {
+                      element = element.ele(key, entry).up();
+                    }
+                  } else {
+                    element = render(element.ele(key), entry).up();
+                  }
+                }
+              } else if (typeof child === "object") {
+                element = render(element.ele(key), child).up();
+              } else {
+                if (typeof child === 'string' && _this.options.cdata && requiresCDATA(child)) {
+                  element = element.ele(key).raw(wrapCDATA(child)).up();
+                } else {
+                  if (child == null) {
+                    child = '';
+                  }
+                  element = element.ele(key, child.toString()).up();
+                }
+              }
+            }
+          }
+          return element;
+        };
+      })(this);
+      rootElement = builder.create(rootName, this.options.xmldec, this.options.doctype, {
+        headless: this.options.headless,
+        allowSurrogateChars: this.options.allowSurrogateChars
+      });
+      return render(rootElement, rootObj).end(this.options.renderOpts);
+    };
+
+    return Builder;
+
+  })();
+
+}).call(this);
+
+},{"./defaults":34,"xmlbuilder":59}],34:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  exports.defaults = {
+    "0.1": {
+      explicitCharkey: false,
+      trim: true,
+      normalize: true,
+      normalizeTags: false,
+      attrkey: "@",
+      charkey: "#",
+      explicitArray: false,
+      ignoreAttrs: false,
+      mergeAttrs: false,
+      explicitRoot: false,
+      validator: null,
+      xmlns: false,
+      explicitChildren: false,
+      childkey: '@@',
+      charsAsChildren: false,
+      includeWhiteChars: false,
+      async: false,
+      strict: true,
+      attrNameProcessors: null,
+      attrValueProcessors: null,
+      tagNameProcessors: null,
+      valueProcessors: null,
+      emptyTag: ''
+    },
+    "0.2": {
+      explicitCharkey: false,
+      trim: false,
+      normalize: false,
+      normalizeTags: false,
+      attrkey: "$",
+      charkey: "_",
+      explicitArray: true,
+      ignoreAttrs: false,
+      mergeAttrs: false,
+      explicitRoot: true,
+      validator: null,
+      xmlns: false,
+      explicitChildren: false,
+      preserveChildrenOrder: false,
+      childkey: '$$',
+      charsAsChildren: false,
+      includeWhiteChars: false,
+      async: false,
+      strict: true,
+      attrNameProcessors: null,
+      attrValueProcessors: null,
+      tagNameProcessors: null,
+      valueProcessors: null,
+      rootName: 'root',
+      xmldec: {
+        'version': '1.0',
+        'encoding': 'UTF-8',
+        'standalone': true
+      },
+      doctype: null,
+      renderOpts: {
+        'pretty': true,
+        'indent': '  ',
+        'newline': '\n'
+      },
+      headless: false,
+      chunkSize: 10000,
+      emptyTag: '',
+      cdata: false
+    }
+  };
+
+}).call(this);
+
+},{}],35:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  "use strict";
+  var bom, defaults, events, isEmpty, processItem, processors, sax, setImmediate,
+    bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
+    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
+    hasProp = {}.hasOwnProperty;
+
+  sax = require('sax');
+
+  events = require('events');
+
+  bom = require('./bom');
+
+  processors = require('./processors');
+
+  setImmediate = require('timers').setImmediate;
+
+  defaults = require('./defaults').defaults;
+
+  isEmpty = function(thing) {
+    return typeof thing === "object" && (thing != null) && Object.keys(thing).length === 0;
+  };
+
+  processItem = function(processors, item, key) {
+    var i, len, process;
+    for (i = 0, len = processors.length; i < len; i++) {
+      process = processors[i];
+      item = process(item, key);
+    }
+    return item;
+  };
+
+  exports.Parser = (function(superClass) {
+    extend(Parser, superClass);
+
+    function Parser(opts) {
+      this.parseString = bind(this.parseString, this);
+      this.reset = bind(this.reset, this);
+      this.assignOrPush = bind(this.assignOrPush, this);
+      this.processAsync = bind(this.processAsync, this);
+      var key, ref, value;
+      if (!(this instanceof exports.Parser)) {
+        return new exports.Parser(opts);
+      }
+      this.options = {};
+      ref = defaults["0.2"];
+      for (key in ref) {
+        if (!hasProp.call(ref, key)) continue;
+        value = ref[key];
+        this.options[key] = value;
+      }
+      for (key in opts) {
+        if (!hasProp.call(opts, key)) continue;
+        value = opts[key];
+        this.options[key] = value;
+      }
+      if (this.options.xmlns) {
+        this.options.xmlnskey = this.options.attrkey + "ns";
+      }
+      if (this.options.normalizeTags) {
+        if (!this.options.tagNameProcessors) {
+          this.options.tagNameProcessors = [];
+        }
+        this.options.tagNameProcessors.unshift(processors.normalize);
+      }
+      this.reset();
+    }
+
+    Parser.prototype.processAsync = function() {
+      var chunk, err;
+      try {
+        if (this.remaining.length <= this.options.chunkSize) {
+          chunk = this.remaining;
+          this.remaining = '';
+          this.saxParser = this.saxParser.write(chunk);
+          return this.saxParser.close();
+        } else {
+          chunk = this.remaining.substr(0, this.options.chunkSize);
+          this.remaining = this.remaining.substr(this.options.chunkSize, this.remaining.length);
+          this.saxParser = this.saxParser.write(chunk);
+          return setImmediate(this.processAsync);
+        }
+      } catch (error1) {
+        err = error1;
+        if (!this.saxParser.errThrown) {
+          this.saxParser.errThrown = true;
+          return this.emit(err);
+        }
+      }
+    };
+
+    Parser.prototype.assignOrPush = function(obj, key, newValue) {
+      if (!(key in obj)) {
+        if (!this.options.explicitArray) {
+          return obj[key] = newValue;
+        } else {
+          return obj[key] = [newValue];
+        }
+      } else {
+        if (!(obj[key] instanceof Array)) {
+          obj[key] = [obj[key]];
+        }
+        return obj[key].push(newValue);
+      }
+    };
+
+    Parser.prototype.reset = function() {
+      var attrkey, charkey, ontext, stack;
+      this.removeAllListeners();
+      this.saxParser = sax.parser(this.options.strict, {
+        trim: false,
+        normalize: false,
+        xmlns: this.options.xmlns
+      });
+      this.saxParser.errThrown = false;
+      this.saxParser.onerror = (function(_this) {
+        return function(error) {
+          _this.saxParser.resume();
+          if (!_this.saxParser.errThrown) {
+            _this.saxParser.errThrown = true;
+            return _this.emit("error", error);
+          }
+        };
+      })(this);
+      this.saxParser.onend = (function(_this) {
+        return function() {
+          if (!_this.saxParser.ended) {
+            _this.saxParser.ended = true;
+            return _this.emit("end", _this.resultObject);
+          }
+        };
+      })(this);
+      this.saxParser.ended = false;
+      this.EXPLICIT_CHARKEY = this.options.explicitCharkey;
+      this.resultObject = null;
+      stack = [];
+      attrkey = this.options.attrkey;
+      charkey = this.options.charkey;
+      this.saxParser.onopentag = (function(_this) {
+        return function(node) {
+          var key, newValue, obj, processedKey, ref;
+          obj = {};
+          obj[charkey] = "";
+          if (!_this.options.ignoreAttrs) {
+            ref = node.attributes;
+            for (key in ref) {
+              if (!hasProp.call(ref, key)) continue;
+              if (!(attrkey in obj) && !_this.options.mergeAttrs) {
+                obj[attrkey] = {};
+              }
+              newValue = _this.options.attrValueProcessors ? processItem(_this.options.attrValueProcessors, node.attributes[key], key) : node.attributes[key];
+              processedKey = _this.options.attrNameProcessors ? processItem(_this.options.attrNameProcessors, key) : key;
+              if (_this.options.mergeAttrs) {
+                _this.assignOrPush(obj, processedKey, newValue);
+              } else {
+                obj[attrkey][processedKey] = newValue;
+              }
+            }
+          }
+          obj["#name"] = _this.options.tagNameProcessors ? processItem(_this.options.tagNameProcessors, node.name) : node.name;
+          if (_this.options.xmlns) {
+            obj[_this.options.xmlnskey] = {
+              uri: node.uri,
+              local: node.local
+            };
+          }
+          return stack.push(obj);
+        };
+      })(this);
+      this.saxParser.onclosetag = (function(_this) {
+        return function() {
+          var cdata, emptyStr, key, node, nodeName, obj, objClone, old, s, xpath;
+          obj = stack.pop();
+          nodeName = obj["#name"];
+          if (!_this.options.explicitChildren || !_this.options.preserveChildrenOrder) {
+            delete obj["#name"];
+          }
+          if (obj.cdata === true) {
+            cdata = obj.cdata;
+            delete obj.cdata;
+          }
+          s = stack[stack.length - 1];
+          if (obj[charkey].match(/^\s*$/) && !cdata) {
+            emptyStr = obj[charkey];
+            delete obj[charkey];
+          } else {
+            if (_this.options.trim) {
+              obj[charkey] = obj[charkey].trim();
+            }
+            if (_this.options.normalize) {
+              obj[charkey] = obj[charkey].replace(/\s{2,}/g, " ").trim();
+            }
+            obj[charkey] = _this.options.valueProcessors ? processItem(_this.options.valueProcessors, obj[charkey], nodeName) : obj[charkey];
+            if (Object.keys(obj).length === 1 && charkey in obj && !_this.EXPLICIT_CHARKEY) {
+              obj = obj[charkey];
+            }
+          }
+          if (isEmpty(obj)) {
+            obj = _this.options.emptyTag !== '' ? _this.options.emptyTag : emptyStr;
+          }
+          if (_this.options.validator != null) {
+            xpath = "/" + ((function() {
+              var i, len, results;
+              results = [];
+              for (i = 0, len = stack.length; i < len; i++) {
+                node = stack[i];
+                results.push(node["#name"]);
+              }
+              return results;
+            })()).concat(nodeName).join("/");
+            (function() {
+              var err;
+              try {
+                return obj = _this.options.validator(xpath, s && s[nodeName], obj);
+              } catch (error1) {
+                err = error1;
+                return _this.emit("error", err);
+              }
+            })();
+          }
+          if (_this.options.explicitChildren && !_this.options.mergeAttrs && typeof obj === 'object') {
+            if (!_this.options.preserveChildrenOrder) {
+              node = {};
+              if (_this.options.attrkey in obj) {
+                node[_this.options.attrkey] = obj[_this.options.attrkey];
+                delete obj[_this.options.attrkey];
+              }
+              if (!_this.options.charsAsChildren && _this.options.charkey in obj) {
+                node[_this.options.charkey] = obj[_this.options.charkey];
+                delete obj[_this.options.charkey];
+              }
+              if (Object.getOwnPropertyNames(obj).length > 0) {
+                node[_this.options.childkey] = obj;
+              }
+              obj = node;
+            } else if (s) {
+              s[_this.options.childkey] = s[_this.options.childkey] || [];
+              objClone = {};
+              for (key in obj) {
+                if (!hasProp.call(obj, key)) continue;
+                objClone[key] = obj[key];
+              }
+              s[_this.options.childkey].push(objClone);
+              delete obj["#name"];
+              if (Object.keys(obj).length === 1 && charkey in obj && !_this.EXPLICIT_CHARKEY) {
+                obj = obj[charkey];
+              }
+            }
+          }
+          if (stack.length > 0) {
+            return _this.assignOrPush(s, nodeName, obj);
+          } else {
+            if (_this.options.explicitRoot) {
+              old = obj;
+              obj = {};
+              obj[nodeName] = old;
+            }
+            _this.resultObject = obj;
+            _this.saxParser.ended = true;
+            return _this.emit("end", _this.resultObject);
+          }
+        };
+      })(this);
+      ontext = (function(_this) {
+        return function(text) {
+          var charChild, s;
+          s = stack[stack.length - 1];
+          if (s) {
+            s[charkey] += text;
+            if (_this.options.explicitChildren && _this.options.preserveChildrenOrder && _this.options.charsAsChildren && (_this.options.includeWhiteChars || text.replace(/\\n/g, '').trim() !== '')) {
+              s[_this.options.childkey] = s[_this.options.childkey] || [];
+              charChild = {
+                '#name': '__text__'
+              };
+              charChild[charkey] = text;
+              if (_this.options.normalize) {
+                charChild[charkey] = charChild[charkey].replace(/\s{2,}/g, " ").trim();
+              }
+              s[_this.options.childkey].push(charChild);
+            }
+            return s;
+          }
+        };
+      })(this);
+      this.saxParser.ontext = ontext;
+      return this.saxParser.oncdata = (function(_this) {
+        return function(text) {
+          var s;
+          s = ontext(text);
+          if (s) {
+            return s.cdata = true;
+          }
+        };
+      })(this);
+    };
+
+    Parser.prototype.parseString = function(str, cb) {
+      var err;
+      if ((cb != null) && typeof cb === "function") {
+        this.on("end", function(result) {
+          this.reset();
+          return cb(null, result);
+        });
+        this.on("error", function(err) {
+          this.reset();
+          return cb(err);
+        });
+      }
+      try {
+        str = str.toString();
+        if (str.trim() === '') {
+          this.emit("end", null);
+          return true;
+        }
+        str = bom.stripBOM(str);
+        if (this.options.async) {
+          this.remaining = str;
+          setImmediate(this.processAsync);
+          return this.saxParser;
+        }
+        return this.saxParser.write(str).close();
+      } catch (error1) {
+        err = error1;
+        if (!(this.saxParser.errThrown || this.saxParser.ended)) {
+          this.emit('error', err);
+          return this.saxParser.errThrown = true;
+        } else if (this.saxParser.ended) {
+          throw err;
+        }
+      }
+    };
+
+    return Parser;
+
+  })(events.EventEmitter);
+
+  exports.parseString = function(str, a, b) {
+    var cb, options, parser;
+    if (b != null) {
+      if (typeof b === 'function') {
+        cb = b;
+      }
+      if (typeof a === 'object') {
+        options = a;
+      }
+    } else {
+      if (typeof a === 'function') {
+        cb = a;
+      }
+      options = {};
+    }
+    parser = new exports.Parser(options);
+    return parser.parseString(str, cb);
+  };
+
+}).call(this);
+
+},{"./bom":32,"./defaults":34,"./processors":36,"events":5,"sax":31,"timers":29}],36:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  "use strict";
+  var prefixMatch;
+
+  prefixMatch = new RegExp(/(?!xmlns)^.*:/);
+
+  exports.normalize = function(str) {
+    return str.toLowerCase();
+  };
+
+  exports.firstCharLowerCase = function(str) {
+    return str.charAt(0).toLowerCase() + str.slice(1);
+  };
+
+  exports.stripPrefix = function(str) {
+    return str.replace(prefixMatch, '');
+  };
+
+  exports.parseNumbers = function(str) {
+    if (!isNaN(str)) {
+      str = str % 1 === 0 ? parseInt(str, 10) : parseFloat(str);
+    }
+    return str;
+  };
+
+  exports.parseBooleans = function(str) {
+    if (/^(?:true|false)$/i.test(str)) {
+      str = str.toLowerCase() === 'true';
+    }
+    return str;
+  };
+
+}).call(this);
+
+},{}],37:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  "use strict";
+  var builder, defaults, parser, processors,
+    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
+    hasProp = {}.hasOwnProperty;
+
+  defaults = require('./defaults');
+
+  builder = require('./builder');
+
+  parser = require('./parser');
+
+  processors = require('./processors');
+
+  exports.defaults = defaults.defaults;
+
+  exports.processors = processors;
+
+  exports.ValidationError = (function(superClass) {
+    extend(ValidationError, superClass);
+
+    function ValidationError(message) {
+      this.message = message;
+    }
+
+    return ValidationError;
+
+  })(Error);
+
+  exports.Builder = builder.Builder;
+
+  exports.Parser = parser.Parser;
+
+  exports.parseString = parser.parseString;
+
+}).call(this);
+
+},{"./builder":33,"./defaults":34,"./parser":35,"./processors":36}],38:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var assign, isArray, isEmpty, isFunction, isObject, isPlainObject,
+    slice = [].slice,
+    hasProp = {}.hasOwnProperty;
+
+  assign = function() {
+    var i, key, len, source, sources, target;
+    target = arguments[0], sources = 2 <= arguments.length ? slice.call(arguments, 1) : [];
+    if (isFunction(Object.assign)) {
+      Object.assign.apply(null, arguments);
+    } else {
+      for (i = 0, len = sources.length; i < len; i++) {
+        source = sources[i];
+        if (source != null) {
+          for (key in source) {
+            if (!hasProp.call(source, key)) continue;
+            target[key] = source[key];
+          }
+        }
+      }
+    }
+    return target;
+  };
+
+  isFunction = function(val) {
+    return !!val && Object.prototype.toString.call(val) === '[object Function]';
+  };
+
+  isObject = function(val) {
+    var ref;
+    return !!val && ((ref = typeof val) === 'function' || ref === 'object');
+  };
+
+  isArray = function(val) {
+    if (isFunction(Array.isArray)) {
+      return Array.isArray(val);
+    } else {
+      return Object.prototype.toString.call(val) === '[object Array]';
+    }
+  };
+
+  isEmpty = function(val) {
+    var key;
+    if (isArray(val)) {
+      return !val.length;
+    } else {
+      for (key in val) {
+        if (!hasProp.call(val, key)) continue;
+        return false;
+      }
+      return true;
+    }
+  };
+
+  isPlainObject = function(val) {
+    var ctor, proto;
+    return isObject(val) && (proto = Object.getPrototypeOf(val)) && (ctor = proto.constructor) && (typeof ctor === 'function') && (ctor instanceof ctor) && (Function.prototype.toString.call(ctor) === Function.prototype.toString.call(Object));
+  };
+
+  module.exports.assign = assign;
+
+  module.exports.isFunction = isFunction;
+
+  module.exports.isObject = isObject;
+
+  module.exports.isArray = isArray;
+
+  module.exports.isEmpty = isEmpty;
+
+  module.exports.isPlainObject = isPlainObject;
+
+}).call(this);
+
+},{}],39:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLAttribute;
+
+  module.exports = XMLAttribute = (function() {
+    function XMLAttribute(parent, name, value) {
+      this.options = parent.options;
+      this.stringify = parent.stringify;
+      if (name == null) {
+        throw new Error("Missing attribute name of element " + parent.name);
+      }
+      if (value == null) {
+        throw new Error("Missing attribute value for attribute " + name + " of element " + parent.name);
+      }
+      this.name = this.stringify.attName(name);
+      this.value = this.stringify.attValue(value);
+    }
+
+    XMLAttribute.prototype.clone = function() {
+      return Object.create(this);
+    };
+
+    XMLAttribute.prototype.toString = function(options) {
+      return this.options.writer.set(options).attribute(this);
+    };
+
+    return XMLAttribute;
+
+  })();
+
+}).call(this);
+
+},{}],40:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLCData, XMLNode,
+    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
+    hasProp = {}.hasOwnProperty;
+
+  XMLNode = require('./XMLNode');
+
+  module.exports = XMLCData = (function(superClass) {
+    extend(XMLCData, superClass);
+
+    function XMLCData(parent, text) {
+      XMLCData.__super__.constructor.call(this, parent);
+      if (text == null) {
+        throw new Error("Missing CDATA text");
+      }
+      this.text = this.stringify.cdata(text);
+    }
+
+    XMLCData.prototype.clone = function() {
+      return Object.create(this);
+    };
+
+    XMLCData.prototype.toString = function(options) {
+      return this.options.writer.set(options).cdata(this);
+    };
+
+    return XMLCData;
+
+  })(XMLNode);
+
+}).call(this);
+
+},{"./XMLNode":51}],41:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLComment, XMLNode,
+    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
+    hasProp = {}.hasOwnProperty;
+
+  XMLNode = require('./XMLNode');
+
+  module.exports = XMLComment = (function(superClass) {
+    extend(XMLComment, superClass);
+
+    function XMLComment(parent, text) {
+      XMLComment.__super__.constructor.call(this, parent);
+      if (text == null) {
+        throw new Error("Missing comment text");
+      }
+      this.text = this.stringify.comment(text);
+    }
+
+    XMLComment.prototype.clone = function() {
+      return Object.create(this);
+    };
+
+    XMLComment.prototype.toString = function(options) {
+      return this.options.writer.set(options).comment(this);
+    };
+
+    return XMLComment;
+
+  })(XMLNode);
+
+}).call(this);
+
+},{"./XMLNode":51}],42:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLDTDAttList, XMLNode,
+    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
+    hasProp = {}.hasOwnProperty;
+
+  XMLNode = require('./XMLNode');
+
+  module.exports = XMLDTDAttList = (function(superClass) {
+    extend(XMLDTDAttList, superClass);
+
+    function XMLDTDAttList(parent, elementName, attributeName, attributeType, defaultValueType, defaultValue) {
+      XMLDTDAttList.__super__.constructor.call(this, parent);
+      if (elementName == null) {
+        throw new Error("Missing DTD element name");
+      }
+      if (attributeName == null) {
+        throw new Error("Missing DTD attribute name");
+      }
+      if (!attributeType) {
+        throw new Error("Missing DTD attribute type");
+      }
+      if (!defaultValueType) {
+        throw new Error("Missing DTD attribute default");
+      }
+      if (defaultValueType.indexOf('#') !== 0) {
+        defaultValueType = '#' + defaultValueType;
+      }
+      if (!defaultValueType.match(/^(#REQUIRED|#IMPLIED|#FIXED|#DEFAULT)$/)) {
+        throw new Error("Invalid default value type; expected: #REQUIRED, #IMPLIED, #FIXED or #DEFAULT");
+      }
+      if (defaultValue && !defaultValueType.match(/^(#FIXED|#DEFAULT)$/)) {
+        throw new Error("Default value only applies to #FIXED or #DEFAULT");
+      }
+      this.elementName = this.stringify.eleName(elementName);
+      this.attributeName = this.stringify.attName(attributeName);
+      this.attributeType = this.stringify.dtdAttType(attributeType);
+      this.defaultValue = this.stringify.dtdAttDefault(defaultValue);
+      this.defaultValueType = defaultValueType;
+    }
+
+    XMLDTDAttList.prototype.toString = function(options) {
+      return this.options.writer.set(options).dtdAttList(this);
+    };
+
+    return XMLDTDAttList;
+
+  })(XMLNode);
+
+}).call(this);
+
+},{"./XMLNode":51}],43:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLDTDElement, XMLNode,
+    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
+    hasProp = {}.hasOwnProperty;
+
+  XMLNode = require('./XMLNode');
+
+  module.exports = XMLDTDElement = (function(superClass) {
+    extend(XMLDTDElement, superClass);
+
+    function XMLDTDElement(parent, name, value) {
+      XMLDTDElement.__super__.constructor.call(this, parent);
+      if (name == null) {
+        throw new Error("Missing DTD element name");
+      }
+      if (!value) {
+        value = '(#PCDATA)';
+      }
+      if (Array.isArray(value)) {
+        value = '(' + value.join(',') + ')';
+      }
+      this.name = this.stringify.eleName(name);
+      this.value = this.stringify.dtdElementValue(value);
+    }
+
+    XMLDTDElement.prototype.toString = function(options) {
+      return this.options.writer.set(options).dtdElement(this);
+    };
+
+    return XMLDTDElement;
+
+  })(XMLNode);
+
+}).call(this);
+
+},{"./XMLNode":51}],44:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLDTDEntity, XMLNode, isObject,
+    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
+    hasProp = {}.hasOwnProperty;
+
+  isObject = require('./Utility').isObject;
+
+  XMLNode = require('./XMLNode');
+
+  module.exports = XMLDTDEntity = (function(superClass) {
+    extend(XMLDTDEntity, superClass);
+
+    function XMLDTDEntity(parent, pe, name, value) {
+      XMLDTDEntity.__super__.constructor.call(this, parent);
+      if (name == null) {
+        throw new Error("Missing entity name");
+      }
+      if (value == null) {
+        throw new Error("Missing entity value");
+      }
+      this.pe = !!pe;
+      this.name = this.stringify.eleName(name);
+      if (!isObject(value)) {
+        this.value = this.stringify.dtdEntityValue(value);
+      } else {
+        if (!value.pubID && !value.sysID) {
+          throw new Error("Public and/or system identifiers are required for an external entity");
+        }
+        if (value.pubID && !value.sysID) {
+          throw new Error("System identifier is required for a public external entity");
+        }
+        if (value.pubID != null) {
+          this.pubID = this.stringify.dtdPubID(value.pubID);
+        }
+        if (value.sysID != null) {
+          this.sysID = this.stringify.dtdSysID(value.sysID);
+        }
+        if (value.nData != null) {
+          this.nData = this.stringify.dtdNData(value.nData);
+        }
+        if (this.pe && this.nData) {
+          throw new Error("Notation declaration is not allowed in a parameter entity");
+        }
+      }
+    }
+
+    XMLDTDEntity.prototype.toString = function(options) {
+      return this.options.writer.set(options).dtdEntity(this);
+    };
+
+    return XMLDTDEntity;
+
+  })(XMLNode);
+
+}).call(this);
+
+},{"./Utility":38,"./XMLNode":51}],45:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLDTDNotation, XMLNode,
+    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
+    hasProp = {}.hasOwnProperty;
+
+  XMLNode = require('./XMLNode');
+
+  module.exports = XMLDTDNotation = (function(superClass) {
+    extend(XMLDTDNotation, superClass);
+
+    function XMLDTDNotation(parent, name, value) {
+      XMLDTDNotation.__super__.constructor.call(this, parent);
+      if (name == null) {
+        throw new Error("Missing notation name");
+      }
+      if (!value.pubID && !value.sysID) {
+        throw new Error("Public or system identifiers are required for an external entity");
+      }
+      this.name = this.stringify.eleName(name);
+      if (value.pubID != null) {
+        this.pubID = this.stringify.dtdPubID(value.pubID);
+      }
+      if (value.sysID != null) {
+        this.sysID = this.stringify.dtdSysID(value.sysID);
+      }
+    }
+
+    XMLDTDNotation.prototype.toString = function(options) {
+      return this.options.writer.set(options).dtdNotation(this);
+    };
+
+    return XMLDTDNotation;
+
+  })(XMLNode);
+
+}).call(this);
+
+},{"./XMLNode":51}],46:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLDeclaration, XMLNode, isObject,
+    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
+    hasProp = {}.hasOwnProperty;
+
+  isObject = require('./Utility').isObject;
+
+  XMLNode = require('./XMLNode');
+
+  module.exports = XMLDeclaration = (function(superClass) {
+    extend(XMLDeclaration, superClass);
+
+    function XMLDeclaration(parent, version, encoding, standalone) {
+      var ref;
+      XMLDeclaration.__super__.constructor.call(this, parent);
+      if (isObject(version)) {
+        ref = version, version = ref.version, encoding = ref.encoding, standalone = ref.standalone;
+      }
+      if (!version) {
+        version = '1.0';
+      }
+      this.version = this.stringify.xmlVersion(version);
+      if (encoding != null) {
+        this.encoding = this.stringify.xmlEncoding(encoding);
+      }
+      if (standalone != null) {
+        this.standalone = this.stringify.xmlStandalone(standalone);
+      }
+    }
+
+    XMLDeclaration.prototype.toString = function(options) {
+      return this.options.writer.set(options).declaration(this);
+    };
+
+    return XMLDeclaration;
+
+  })(XMLNode);
+
+}).call(this);
+
+},{"./Utility":38,"./XMLNode":51}],47:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLDTDAttList, XMLDTDElement, XMLDTDEntity, XMLDTDNotation, XMLDocType, XMLNode, isObject,
+    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
+    hasProp = {}.hasOwnProperty;
+
+  isObject = require('./Utility').isObject;
+
+  XMLNode = require('./XMLNode');
+
+  XMLDTDAttList = require('./XMLDTDAttList');
+
+  XMLDTDEntity = require('./XMLDTDEntity');
+
+  XMLDTDElement = require('./XMLDTDElement');
+
+  XMLDTDNotation = require('./XMLDTDNotation');
+
+  module.exports = XMLDocType = (function(superClass) {
+    extend(XMLDocType, superClass);
+
+    function XMLDocType(parent, pubID, sysID) {
+      var ref, ref1;
+      XMLDocType.__super__.constructor.call(this, parent);
+      this.documentObject = parent;
+      if (isObject(pubID)) {
+        ref = pubID, pubID = ref.pubID, sysID = ref.sysID;
+      }
+      if (sysID == null) {
+        ref1 = [pubID, sysID], sysID = ref1[0], pubID = ref1[1];
+      }
+      if (pubID != null) {
+        this.pubID = this.stringify.dtdPubID(pubID);
+      }
+      if (sysID != null) {
+        this.sysID = this.stringify.dtdSysID(sysID);
+      }
+    }
+
+    XMLDocType.prototype.element = function(name, value) {
+      var child;
+      child = new XMLDTDElement(this, name, value);
+      this.children.push(child);
+      return this;
+    };
+
+    XMLDocType.prototype.attList = function(elementName, attributeName, attributeType, defaultValueType, defaultValue) {
+      var child;
+      child = new XMLDTDAttList(this, elementName, attributeName, attributeType, defaultValueType, defaultValue);
+      this.children.push(child);
+      return this;
+    };
+
+    XMLDocType.prototype.entity = function(name, value) {
+      var child;
+      child = new XMLDTDEntity(this, false, name, value);
+      this.children.push(child);
+      return this;
+    };
+
+    XMLDocType.prototype.pEntity = function(name, value) {
+      var child;
+      child = new XMLDTDEntity(this, true, name, value);
+      this.children.push(child);
+      return this;
+    };
+
+    XMLDocType.prototype.notation = function(name, value) {
+      var child;
+      child = new XMLDTDNotation(this, name, value);
+      this.children.push(child);
+      return this;
+    };
+
+    XMLDocType.prototype.toString = function(options) {
+      return this.options.writer.set(options).docType(this);
+    };
+
+    XMLDocType.prototype.ele = function(name, value) {
+      return this.element(name, value);
+    };
+
+    XMLDocType.prototype.att = function(elementName, attributeName, attributeType, defaultValueType, defaultValue) {
+      return this.attList(elementName, attributeName, attributeType, defaultValueType, defaultValue);
+    };
+
+    XMLDocType.prototype.ent = function(name, value) {
+      return this.entity(name, value);
+    };
+
+    XMLDocType.prototype.pent = function(name, value) {
+      return this.pEntity(name, value);
+    };
+
+    XMLDocType.prototype.not = function(name, value) {
+      return this.notation(name, value);
+    };
+
+    XMLDocType.prototype.up = function() {
+      return this.root() || this.documentObject;
+    };
+
+    return XMLDocType;
+
+  })(XMLNode);
+
+}).call(this);
+
+},{"./Utility":38,"./XMLDTDAttList":42,"./XMLDTDElement":43,"./XMLDTDEntity":44,"./XMLDTDNotation":45,"./XMLNode":51}],48:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLDocument, XMLNode, XMLStringWriter, XMLStringifier, isPlainObject,
+    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
+    hasProp = {}.hasOwnProperty;
+
+  isPlainObject = require('./Utility').isPlainObject;
+
+  XMLNode = require('./XMLNode');
+
+  XMLStringifier = require('./XMLStringifier');
+
+  XMLStringWriter = require('./XMLStringWriter');
+
+  module.exports = XMLDocument = (function(superClass) {
+    extend(XMLDocument, superClass);
+
+    function XMLDocument(options) {
+      XMLDocument.__super__.constructor.call(this, null);
+      options || (options = {});
+      if (!options.writer) {
+        options.writer = new XMLStringWriter();
+      }
+      this.options = options;
+      this.stringify = new XMLStringifier(options);
+      this.isDocument = true;
+    }
+
+    XMLDocument.prototype.end = function(writer) {
+      var writerOptions;
+      if (!writer) {
+        writer = this.options.writer;
+      } else if (isPlainObject(writer)) {
+        writerOptions = writer;
+        writer = this.options.writer.set(writerOptions);
+      }
+      return writer.document(this);
+    };
+
+    XMLDocument.prototype.toString = function(options) {
+      return this.options.writer.set(options).document(this);
+    };
+
+    return XMLDocument;
+
+  })(XMLNode);
+
+}).call(this);
+
+},{"./Utility":38,"./XMLNode":51,"./XMLStringWriter":55,"./XMLStringifier":56}],49:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLAttribute, XMLCData, XMLComment, XMLDTDAttList, XMLDTDElement, XMLDTDEntity, XMLDTDNotation, XMLDeclaration, XMLDocType, XMLDocumentCB, XMLElement, XMLProcessingInstruction, XMLRaw, XMLStringWriter, XMLStringifier, XMLText, isFunction, isObject, isPlainObject, ref,
+    hasProp = {}.hasOwnProperty;
+
+  ref = require('./Utility'), isObject = ref.isObject, isFunction = ref.isFunction, isPlainObject = ref.isPlainObject;
+
+  XMLElement = require('./XMLElement');
+
+  XMLCData = require('./XMLCData');
+
+  XMLComment = require('./XMLComment');
+
+  XMLRaw = require('./XMLRaw');
+
+  XMLText = require('./XMLText');
+
+  XMLProcessingInstruction = require('./XMLProcessingInstruction');
+
+  XMLDeclaration = require('./XMLDeclaration');
+
+  XMLDocType = require('./XMLDocType');
+
+  XMLDTDAttList = require('./XMLDTDAttList');
+
+  XMLDTDEntity = require('./XMLDTDEntity');
+
+  XMLDTDElement = require('./XMLDTDElement');
+
+  XMLDTDNotation = require('./XMLDTDNotation');
+
+  XMLAttribute = require('./XMLAttribute');
+
+  XMLStringifier = require('./XMLStringifier');
+
+  XMLStringWriter = require('./XMLStringWriter');
+
+  module.exports = XMLDocumentCB = (function() {
+    function XMLDocumentCB(options, onData, onEnd) {
+      var writerOptions;
+      options || (options = {});
+      if (!options.writer) {
+        options.writer = new XMLStringWriter(options);
+      } else if (isPlainObject(options.writer)) {
+        writerOptions = options.writer;
+        options.writer = new XMLStringWriter(writerOptions);
+      }
+      this.options = options;
+      this.writer = options.writer;
+      this.stringify = new XMLStringifier(options);
+      this.onDataCallback = onData || function() {};
+      this.onEndCallback = onEnd || function() {};
+      this.currentNode = null;
+      this.currentLevel = -1;
+      this.openTags = {};
+      this.documentStarted = false;
+      this.documentCompleted = false;
+      this.root = null;
+    }
+
+    XMLDocumentCB.prototype.node = function(name, attributes, text) {
+      var ref1;
+      if (name == null) {
+        throw new Error("Missing node name");
+      }
+      if (this.root && this.currentLevel === -1) {
+        throw new Error("Document can only have one root node");
+      }
+      this.openCurrent();
+      name = name.valueOf();
+      if (attributes == null) {
+        attributes = {};
+      }
+      attributes = attributes.valueOf();
+      if (!isObject(attributes)) {
+        ref1 = [attributes, text], text = ref1[0], attributes = ref1[1];
+      }
+      this.currentNode = new XMLElement(this, name, attributes);
+      this.currentNode.children = false;
+      this.currentLevel++;
+      this.openTags[this.currentLevel] = this.currentNode;
+      if (text != null) {
+        this.text(text);
+      }
+      return this;
+    };
+
+    XMLDocumentCB.prototype.element = function(name, attributes, text) {
+      if (this.currentNode && this.currentNode instanceof XMLDocType) {
+        return this.dtdElement.apply(this, arguments);
+      } else {
+        return this.node(name, attributes, text);
+      }
+    };
+
+    XMLDocumentCB.prototype.attribute = function(name, value) {
+      var attName, attValue;
+      if (!this.currentNode || this.currentNode.children) {
+        throw new Error("att() can only be used immediately after an ele() call in callback mode");
+      }
+      if (name != null) {
+        name = name.valueOf();
+      }
+      if (isObject(name)) {
+        for (attName in name) {
+          if (!hasProp.call(name, attName)) continue;
+          attValue = name[attName];
+          this.attribute(attName, attValue);
+        }
+      } else {
+        if (isFunction(value)) {
+          value = value.apply();
+        }
+        if (!this.options.skipNullAttributes || (value != null)) {
+          this.currentNode.attributes[name] = new XMLAttribute(this, name, value);
+        }
+      }
+      return this;
+    };
+
+    XMLDocumentCB.prototype.text = function(value) {
+      var node;
+      this.openCurrent();
+      node = new XMLText(this, value);
+      this.onData(this.writer.text(node, this.currentLevel + 1));
+      return this;
+    };
+
+    XMLDocumentCB.prototype.cdata = function(value) {
+      var node;
+      this.openCurrent();
+      node = new XMLCData(this, value);
+      this.onData(this.writer.cdata(node, this.currentLevel + 1));
+      return this;
+    };
+
+    XMLDocumentCB.prototype.comment = function(value) {
+      var node;
+      this.openCurrent();
+      node = new XMLComment(this, value);
+      this.onData(this.writer.comment(node, this.currentLevel + 1));
+      return this;
+    };
+
+    XMLDocumentCB.prototype.raw = function(value) {
+      var node;
+      this.openCurrent();
+      node = new XMLRaw(this, value);
+      this.onData(this.writer.raw(node, this.currentLevel + 1));
+      return this;
+    };
+
+    XMLDocumentCB.prototype.instruction = function(target, value) {
+      var i, insTarget, insValue, len, node;
+      this.openCurrent();
+      if (target != null) {
+        target = target.valueOf();
+      }
+      if (value != null) {
+        value = value.valueOf();
+      }
+      if (Array.isArray(target)) {
+        for (i = 0, len = target.length; i < len; i++) {
+          insTarget = target[i];
+          this.instruction(insTarget);
+        }
+      } else if (isObject(target)) {
+        for (insTarget in target) {
+          if (!hasProp.call(target, insTarget)) continue;
+          insValue = target[insTarget];
+          this.instruction(insTarget, insValue);
+        }
+      } else {
+        if (isFunction(value)) {
+          value = value.apply();
+        }
+        node = new XMLProcessingInstruction(this, target, value);
+        this.onData(this.writer.processingInstruction(node, this.currentLevel + 1));
+      }
+      return this;
+    };
+
+    XMLDocumentCB.prototype.declaration = function(version, encoding, standalone) {
+      var node;
+      this.openCurrent();
+      if (this.documentStarted) {
+        throw new Error("declaration() must be the first node");
+      }
+      node = new XMLDeclaration(this, version, encoding, standalone);
+      this.onData(this.writer.declaration(node, this.currentLevel + 1));
+      return this;
+    };
+
+    XMLDocumentCB.prototype.doctype = function(root, pubID, sysID) {
+      this.openCurrent();
+      if (root == null) {
+        throw new Error("Missing root node name");
+      }
+      if (this.root) {
+        throw new Error("dtd() must come before the root node");
+      }
+      this.currentNode = new XMLDocType(this, pubID, sysID);
+      this.currentNode.rootNodeName = root;
+      this.currentNode.children = false;
+      this.currentLevel++;
+      this.openTags[this.currentLevel] = this.currentNode;
+      return this;
+    };
+
+    XMLDocumentCB.prototype.dtdElement = function(name, value) {
+      var node;
+      this.openCurrent();
+      node = new XMLDTDElement(this, name, value);
+      this.onData(this.writer.dtdElement(node, this.currentLevel + 1));
+      return this;
+    };
+
+    XMLDocumentCB.prototype.attList = function(elementName, attributeName, attributeType, defaultValueType, defaultValue) {
+      var node;
+      this.openCurrent();
+      node = new XMLDTDAttList(this, elementName, attributeName, attributeType, defaultValueType, defaultValue);
+      this.onData(this.writer.dtdAttList(node, this.currentLevel + 1));
+      return this;
+    };
+
+    XMLDocumentCB.prototype.entity = function(name, value) {
+      var node;
+      this.openCurrent();
+      node = new XMLDTDEntity(this, false, name, value);
+      this.onData(this.writer.dtdEntity(node, this.currentLevel + 1));
+      return this;
+    };
+
+    XMLDocumentCB.prototype.pEntity = function(name, value) {
+      var node;
+      this.openCurrent();
+      node = new XMLDTDEntity(this, true, name, value);
+      this.onData(this.writer.dtdEntity(node, this.currentLevel + 1));
+      return this;
+    };
+
+    XMLDocumentCB.prototype.notation = function(name, value) {
+      var node;
+      this.openCurrent();
+      node = new XMLDTDNotation(this, name, value);
+      this.onData(this.writer.dtdNotation(node, this.currentLevel + 1));
+      return this;
+    };
+
+    XMLDocumentCB.prototype.up = function() {
+      if (this.currentLevel < 0) {
+        throw new Error("The document node has no parent");
+      }
+      if (this.currentNode) {
+        if (this.currentNode.children) {
+          this.closeNode(this.currentNode);
+        } else {
+          this.openNode(this.currentNode);
+        }
+        this.currentNode = null;
+      } else {
+        this.closeNode(this.openTags[this.currentLevel]);
+      }
+      delete this.openTags[this.currentLevel];
+      this.currentLevel--;
+      return this;
+    };
+
+    XMLDocumentCB.prototype.end = function() {
+      while (this.currentLevel >= 0) {
+        this.up();
+      }
+      return this.onEnd();
+    };
+
+    XMLDocumentCB.prototype.openCurrent = function() {
+      if (this.currentNode) {
+        this.currentNode.children = true;
+        return this.openNode(this.currentNode);
+      }
+    };
+
+    XMLDocumentCB.prototype.openNode = function(node) {
+      if (!node.isOpen) {
+        if (!this.root && this.currentLevel === 0 && node instanceof XMLElement) {
+          this.root = node;
+        }
+        this.onData(this.writer.openNode(node, this.currentLevel));
+        return node.isOpen = true;
+      }
+    };
+
+    XMLDocumentCB.prototype.closeNode = function(node) {
+      if (!node.isClosed) {
+        this.onData(this.writer.closeNode(node, this.currentLevel));
+        return node.isClosed = true;
+      }
+    };
+
+    XMLDocumentCB.prototype.onData = function(chunk) {
+      this.documentStarted = true;
+      return this.onDataCallback(chunk);
+    };
+
+    XMLDocumentCB.prototype.onEnd = function() {
+      this.documentCompleted = true;
+      return this.onEndCallback();
+    };
+
+    XMLDocumentCB.prototype.ele = function() {
+      return this.element.apply(this, arguments);
+    };
+
+    XMLDocumentCB.prototype.nod = function(name, attributes, text) {
+      return this.node(name, attributes, text);
+    };
+
+    XMLDocumentCB.prototype.txt = function(value) {
+      return this.text(value);
+    };
+
+    XMLDocumentCB.prototype.dat = function(value) {
+      return this.cdata(value);
+    };
+
+    XMLDocumentCB.prototype.com = function(value) {
+      return this.comment(value);
+    };
+
+    XMLDocumentCB.prototype.ins = function(target, value) {
+      return this.instruction(target, value);
+    };
+
+    XMLDocumentCB.prototype.dec = function(version, encoding, standalone) {
+      return this.declaration(version, encoding, standalone);
+    };
+
+    XMLDocumentCB.prototype.dtd = function(root, pubID, sysID) {
+      return this.doctype(root, pubID, sysID);
+    };
+
+    XMLDocumentCB.prototype.e = function(name, attributes, text) {
+      return this.element(name, attributes, text);
+    };
+
+    XMLDocumentCB.prototype.n = function(name, attributes, text) {
+      return this.node(name, attributes, text);
+    };
+
+    XMLDocumentCB.prototype.t = function(value) {
+      return this.text(value);
+    };
+
+    XMLDocumentCB.prototype.d = function(value) {
+      return this.cdata(value);
+    };
+
+    XMLDocumentCB.prototype.c = function(value) {
+      return this.comment(value);
+    };
+
+    XMLDocumentCB.prototype.r = function(value) {
+      return this.raw(value);
+    };
+
+    XMLDocumentCB.prototype.i = function(target, value) {
+      return this.instruction(target, value);
+    };
+
+    XMLDocumentCB.prototype.att = function() {
+      if (this.currentNode && this.currentNode instanceof XMLDocType) {
+        return this.attList.apply(this, arguments);
+      } else {
+        return this.attribute.apply(this, arguments);
+      }
+    };
+
+    XMLDocumentCB.prototype.a = function() {
+      if (this.currentNode && this.currentNode instanceof XMLDocType) {
+        return this.attList.apply(this, arguments);
+      } else {
+        return this.attribute.apply(this, arguments);
+      }
+    };
+
+    XMLDocumentCB.prototype.ent = function(name, value) {
+      return this.entity(name, value);
+    };
+
+    XMLDocumentCB.prototype.pent = function(name, value) {
+      return this.pEntity(name, value);
+    };
+
+    XMLDocumentCB.prototype.not = function(name, value) {
+      return this.notation(name, value);
+    };
+
+    return XMLDocumentCB;
+
+  })();
+
+}).call(this);
+
+},{"./Utility":38,"./XMLAttribute":39,"./XMLCData":40,"./XMLComment":41,"./XMLDTDAttList":42,"./XMLDTDElement":43,"./XMLDTDEntity":44,"./XMLDTDNotation":45,"./XMLDeclaration":46,"./XMLDocType":47,"./XMLElement":50,"./XMLProcessingInstruction":52,"./XMLRaw":53,"./XMLStringWriter":55,"./XMLStringifier":56,"./XMLText":57}],50:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLAttribute, XMLElement, XMLNode, isFunction, isObject, ref,
+    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
+    hasProp = {}.hasOwnProperty;
+
+  ref = require('./Utility'), isObject = ref.isObject, isFunction = ref.isFunction;
+
+  XMLNode = require('./XMLNode');
+
+  XMLAttribute = require('./XMLAttribute');
+
+  module.exports = XMLElement = (function(superClass) {
+    extend(XMLElement, superClass);
+
+    function XMLElement(parent, name, attributes) {
+      XMLElement.__super__.constructor.call(this, parent);
+      if (name == null) {
+        throw new Error("Missing element name");
+      }
+      this.name = this.stringify.eleName(name);
+      this.attributes = {};
+      if (attributes != null) {
+        this.attribute(attributes);
+      }
+      if (parent.isDocument) {
+        this.isRoot = true;
+        this.documentObject = parent;
+        parent.rootObject = this;
+      }
+    }
+
+    XMLElement.prototype.clone = function() {
+      var att, attName, clonedSelf, ref1;
+      clonedSelf = Object.create(this);
+      if (clonedSelf.isRoot) {
+        clonedSelf.documentObject = null;
+      }
+      clonedSelf.attributes = {};
+      ref1 = this.attributes;
+      for (attName in ref1) {
+        if (!hasProp.call(ref1, attName)) continue;
+        att = ref1[attName];
+        clonedSelf.attributes[attName] = att.clone();
+      }
+      clonedSelf.children = [];
+      this.children.forEach(function(child) {
+        var clonedChild;
+        clonedChild = child.clone();
+        clonedChild.parent = clonedSelf;
+        return clonedSelf.children.push(clonedChild);
+      });
+      return clonedSelf;
+    };
+
+    XMLElement.prototype.attribute = function(name, value) {
+      var attName, attValue;
+      if (name != null) {
+        name = name.valueOf();
+      }
+      if (isObject(name)) {
+        for (attName in name) {
+          if (!hasProp.call(name, attName)) continue;
+          attValue = name[attName];
+          this.attribute(attName, attValue);
+        }
+      } else {
+        if (isFunction(value)) {
+          value = value.apply();
+        }
+        if (!this.options.skipNullAttributes || (value != null)) {
+          this.attributes[name] = new XMLAttribute(this, name, value);
+        }
+      }
+      return this;
+    };
+
+    XMLElement.prototype.removeAttribute = function(name) {
+      var attName, i, len;
+      if (name == null) {
+        throw new Error("Missing attribute name");
+      }
+      name = name.valueOf();
+      if (Array.isArray(name)) {
+        for (i = 0, len = name.length; i < len; i++) {
+          attName = name[i];
+          delete this.attributes[attName];
+        }
+      } else {
+        delete this.attributes[name];
+      }
+      return this;
+    };
+
+    XMLElement.prototype.toString = function(options) {
+      return this.options.writer.set(options).element(this);
+    };
+
+    XMLElement.prototype.att = function(name, value) {
+      return this.attribute(name, value);
+    };
+
+    XMLElement.prototype.a = function(name, value) {
+      return this.attribute(name, value);
+    };
+
+    return XMLElement;
+
+  })(XMLNode);
+
+}).call(this);
+
+},{"./Utility":38,"./XMLAttribute":39,"./XMLNode":51}],51:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLCData, XMLComment, XMLDeclaration, XMLDocType, XMLElement, XMLNode, XMLProcessingInstruction, XMLRaw, XMLText, isEmpty, isFunction, isObject, ref,
+    hasProp = {}.hasOwnProperty;
+
+  ref = require('./Utility'), isObject = ref.isObject, isFunction = ref.isFunction, isEmpty = ref.isEmpty;
+
+  XMLElement = null;
+
+  XMLCData = null;
+
+  XMLComment = null;
+
+  XMLDeclaration = null;
+
+  XMLDocType = null;
+
+  XMLRaw = null;
+
+  XMLText = null;
+
+  XMLProcessingInstruction = null;
+
+  module.exports = XMLNode = (function() {
+    function XMLNode(parent) {
+      this.parent = parent;
+      if (this.parent) {
+        this.options = this.parent.options;
+        this.stringify = this.parent.stringify;
+      }
+      this.children = [];
+      if (!XMLElement) {
+        XMLElement = require('./XMLElement');
+        XMLCData = require('./XMLCData');
+        XMLComment = require('./XMLComment');
+        XMLDeclaration = require('./XMLDeclaration');
+        XMLDocType = require('./XMLDocType');
+        XMLRaw = require('./XMLRaw');
+        XMLText = require('./XMLText');
+        XMLProcessingInstruction = require('./XMLProcessingInstruction');
+      }
+    }
+
+    XMLNode.prototype.element = function(name, attributes, text) {
+      var childNode, item, j, k, key, lastChild, len, len1, ref1, val;
+      lastChild = null;
+      if (attributes == null) {
+        attributes = {};
+      }
+      attributes = attributes.valueOf();
+      if (!isObject(attributes)) {
+        ref1 = [attributes, text], text = ref1[0], attributes = ref1[1];
+      }
+      if (name != null) {
+        name = name.valueOf();
+      }
+      if (Array.isArray(name)) {
+        for (j = 0, len = name.length; j < len; j++) {
+          item = name[j];
+          lastChild = this.element(item);
+        }
+      } else if (isFunction(name)) {
+        lastChild = this.element(name.apply());
+      } else if (isObject(name)) {
+        for (key in name) {
+          if (!hasProp.call(name, key)) continue;
+          val = name[key];
+          if (isFunction(val)) {
+            val = val.apply();
+          }
+          if ((isObject(val)) && (isEmpty(val))) {
+            val = null;
+          }
+          if (!this.options.ignoreDecorators && this.stringify.convertAttKey && key.indexOf(this.stringify.convertAttKey) === 0) {
+            lastChild = this.attribute(key.substr(this.stringify.convertAttKey.length), val);
+          } else if (!this.options.separateArrayItems && Array.isArray(val)) {
+            for (k = 0, len1 = val.length; k < len1; k++) {
+              item = val[k];
+              childNode = {};
+              childNode[key] = item;
+              lastChild = this.element(childNode);
+            }
+          } else if (isObject(val)) {
+            lastChild = this.element(key);
+            lastChild.element(val);
+          } else {
+            lastChild = this.element(key, val);
+          }
+        }
+      } else {
+        if (!this.options.ignoreDecorators && this.stringify.convertTextKey && name.indexOf(this.stringify.convertTextKey) === 0) {
+          lastChild = this.text(text);
+        } else if (!this.options.ignoreDecorators && this.stringify.convertCDataKey && name.indexOf(this.stringify.convertCDataKey) === 0) {
+          lastChild = this.cdata(text);
+        } else if (!this.options.ignoreDecorators && this.stringify.convertCommentKey && name.indexOf(this.stringify.convertCommentKey) === 0) {
+          lastChild = this.comment(text);
+        } else if (!this.options.ignoreDecorators && this.stringify.convertRawKey && name.indexOf(this.stringify.convertRawKey) === 0) {
+          lastChild = this.raw(text);
+        } else if (!this.options.ignoreDecorators && this.stringify.convertPIKey && name.indexOf(this.stringify.convertPIKey) === 0) {
+          lastChild = this.instruction(name.substr(this.stringify.convertPIKey.length), text);
+        } else {
+          lastChild = this.node(name, attributes, text);
+        }
+      }
+      if (lastChild == null) {
+        throw new Error("Could not create any elements with: " + name);
+      }
+      return lastChild;
+    };
+
+    XMLNode.prototype.insertBefore = function(name, attributes, text) {
+      var child, i, removed;
+      if (this.isRoot) {
+        throw new Error("Cannot insert elements at root level");
+      }
+      i = this.parent.children.indexOf(this);
+      removed = this.parent.children.splice(i);
+      child = this.parent.element(name, attributes, text);
+      Array.prototype.push.apply(this.parent.children, removed);
+      return child;
+    };
+
+    XMLNode.prototype.insertAfter = function(name, attributes, text) {
+      var child, i, removed;
+      if (this.isRoot) {
+        throw new Error("Cannot insert elements at root level");
+      }
+      i = this.parent.children.indexOf(this);
+      removed = this.parent.children.splice(i + 1);
+      child = this.parent.element(name, attributes, text);
+      Array.prototype.push.apply(this.parent.children, removed);
+      return child;
+    };
+
+    XMLNode.prototype.remove = function() {
+      var i, ref1;
+      if (this.isRoot) {
+        throw new Error("Cannot remove the root element");
+      }
+      i = this.parent.children.indexOf(this);
+      [].splice.apply(this.parent.children, [i, i - i + 1].concat(ref1 = [])), ref1;
+      return this.parent;
+    };
+
+    XMLNode.prototype.node = function(name, attributes, text) {
+      var child, ref1;
+      if (name != null) {
+        name = name.valueOf();
+      }
+      attributes || (attributes = {});
+      attributes = attributes.valueOf();
+      if (!isObject(attributes)) {
+        ref1 = [attributes, text], text = ref1[0], attributes = ref1[1];
+      }
+      child = new XMLElement(this, name, attributes);
+      if (text != null) {
+        child.text(text);
+      }
+      this.children.push(child);
+      return child;
+    };
+
+    XMLNode.prototype.text = function(value) {
+      var child;
+      child = new XMLText(this, value);
+      this.children.push(child);
+      return this;
+    };
+
+    XMLNode.prototype.cdata = function(value) {
+      var child;
+      child = new XMLCData(this, value);
+      this.children.push(child);
+      return this;
+    };
+
+    XMLNode.prototype.comment = function(value) {
+      var child;
+      child = new XMLComment(this, value);
+      this.children.push(child);
+      return this;
+    };
+
+    XMLNode.prototype.commentBefore = function(value) {
+      var child, i, removed;
+      i = this.parent.children.indexOf(this);
+      removed = this.parent.children.splice(i);
+      child = this.parent.comment(value);
+      Array.prototype.push.apply(this.parent.children, removed);
+      return this;
+    };
+
+    XMLNode.prototype.commentAfter = function(value) {
+      var child, i, removed;
+      i = this.parent.children.indexOf(this);
+      removed = this.parent.children.splice(i + 1);
+      child = this.parent.comment(value);
+      Array.prototype.push.apply(this.parent.children, removed);
+      return this;
+    };
+
+    XMLNode.prototype.raw = function(value) {
+      var child;
+      child = new XMLRaw(this, value);
+      this.children.push(child);
+      return this;
+    };
+
+    XMLNode.prototype.instruction = function(target, value) {
+      var insTarget, insValue, instruction, j, len;
+      if (target != null) {
+        target = target.valueOf();
+      }
+      if (value != null) {
+        value = value.valueOf();
+      }
+      if (Array.isArray(target)) {
+        for (j = 0, len = target.length; j < len; j++) {
+          insTarget = target[j];
+          this.instruction(insTarget);
+        }
+      } else if (isObject(target)) {
+        for (insTarget in target) {
+          if (!hasProp.call(target, insTarget)) continue;
+          insValue = target[insTarget];
+          this.instruction(insTarget, insValue);
+        }
+      } else {
+        if (isFunction(value)) {
+          value = value.apply();
+        }
+        instruction = new XMLProcessingInstruction(this, target, value);
+        this.children.push(instruction);
+      }
+      return this;
+    };
+
+    XMLNode.prototype.instructionBefore = function(target, value) {
+      var child, i, removed;
+      i = this.parent.children.indexOf(this);
+      removed = this.parent.children.splice(i);
+      child = this.parent.instruction(target, value);
+      Array.prototype.push.apply(this.parent.children, removed);
+      return this;
+    };
+
+    XMLNode.prototype.instructionAfter = function(target, value) {
+      var child, i, removed;
+      i = this.parent.children.indexOf(this);
+      removed = this.parent.children.splice(i + 1);
+      child = this.parent.instruction(target, value);
+      Array.prototype.push.apply(this.parent.children, removed);
+      return this;
+    };
+
+    XMLNode.prototype.declaration = function(version, encoding, standalone) {
+      var doc, xmldec;
+      doc = this.document();
+      xmldec = new XMLDeclaration(doc, version, encoding, standalone);
+      if (doc.children[0] instanceof XMLDeclaration) {
+        doc.children[0] = xmldec;
+      } else {
+        doc.children.unshift(xmldec);
+      }
+      return doc.root() || doc;
+    };
+
+    XMLNode.prototype.doctype = function(pubID, sysID) {
+      var child, doc, doctype, i, j, k, len, len1, ref1, ref2;
+      doc = this.document();
+      doctype = new XMLDocType(doc, pubID, sysID);
+      ref1 = doc.children;
+      for (i = j = 0, len = ref1.length; j < len; i = ++j) {
+        child = ref1[i];
+        if (child instanceof XMLDocType) {
+          doc.children[i] = doctype;
+          return doctype;
+        }
+      }
+      ref2 = doc.children;
+      for (i = k = 0, len1 = ref2.length; k < len1; i = ++k) {
+        child = ref2[i];
+        if (child.isRoot) {
+          doc.children.splice(i, 0, doctype);
+          return doctype;
+        }
+      }
+      doc.children.push(doctype);
+      return doctype;
+    };
+
+    XMLNode.prototype.up = function() {
+      if (this.isRoot) {
+        throw new Error("The root node has no parent. Use doc() if you need to get the document object.");
+      }
+      return this.parent;
+    };
+
+    XMLNode.prototype.root = function() {
+      var node;
+      node = this;
+      while (node) {
+        if (node.isDocument) {
+          return node.rootObject;
+        } else if (node.isRoot) {
+          return node;
+        } else {
+          node = node.parent;
+        }
+      }
+    };
+
+    XMLNode.prototype.document = function() {
+      var node;
+      node = this;
+      while (node) {
+        if (node.isDocument) {
+          return node;
+        } else {
+          node = node.parent;
+        }
+      }
+    };
+
+    XMLNode.prototype.end = function(options) {
+      return this.document().end(options);
+    };
+
+    XMLNode.prototype.prev = function() {
+      var i;
+      i = this.parent.children.indexOf(this);
+      if (i < 1) {
+        throw new Error("Already at the first node");
+      }
+      return this.parent.children[i - 1];
+    };
+
+    XMLNode.prototype.next = function() {
+      var i;
+      i = this.parent.children.indexOf(this);
+      if (i === -1 || i === this.parent.children.length - 1) {
+        throw new Error("Already at the last node");
+      }
+      return this.parent.children[i + 1];
+    };
+
+    XMLNode.prototype.importDocument = function(doc) {
+      var clonedRoot;
+      clonedRoot = doc.root().clone();
+      clonedRoot.parent = this;
+      clonedRoot.isRoot = false;
+      this.children.push(clonedRoot);
+      return this;
+    };
+
+    XMLNode.prototype.ele = function(name, attributes, text) {
+      return this.element(name, attributes, text);
+    };
+
+    XMLNode.prototype.nod = function(name, attributes, text) {
+      return this.node(name, attributes, text);
+    };
+
+    XMLNode.prototype.txt = function(value) {
+      return this.text(value);
+    };
+
+    XMLNode.prototype.dat = function(value) {
+      return this.cdata(value);
+    };
+
+    XMLNode.prototype.com = function(value) {
+      return this.comment(value);
+    };
+
+    XMLNode.prototype.ins = function(target, value) {
+      return this.instruction(target, value);
+    };
+
+    XMLNode.prototype.doc = function() {
+      return this.document();
+    };
+
+    XMLNode.prototype.dec = function(version, encoding, standalone) {
+      return this.declaration(version, encoding, standalone);
+    };
+
+    XMLNode.prototype.dtd = function(pubID, sysID) {
+      return this.doctype(pubID, sysID);
+    };
+
+    XMLNode.prototype.e = function(name, attributes, text) {
+      return this.element(name, attributes, text);
+    };
+
+    XMLNode.prototype.n = function(name, attributes, text) {
+      return this.node(name, attributes, text);
+    };
+
+    XMLNode.prototype.t = function(value) {
+      return this.text(value);
+    };
+
+    XMLNode.prototype.d = function(value) {
+      return this.cdata(value);
+    };
+
+    XMLNode.prototype.c = function(value) {
+      return this.comment(value);
+    };
+
+    XMLNode.prototype.r = function(value) {
+      return this.raw(value);
+    };
+
+    XMLNode.prototype.i = function(target, value) {
+      return this.instruction(target, value);
+    };
+
+    XMLNode.prototype.u = function() {
+      return this.up();
+    };
+
+    XMLNode.prototype.importXMLBuilder = function(doc) {
+      return this.importDocument(doc);
+    };
+
+    return XMLNode;
+
+  })();
+
+}).call(this);
+
+},{"./Utility":38,"./XMLCData":40,"./XMLComment":41,"./XMLDeclaration":46,"./XMLDocType":47,"./XMLElement":50,"./XMLProcessingInstruction":52,"./XMLRaw":53,"./XMLText":57}],52:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLNode, XMLProcessingInstruction,
+    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
+    hasProp = {}.hasOwnProperty;
+
+  XMLNode = require('./XMLNode');
+
+  module.exports = XMLProcessingInstruction = (function(superClass) {
+    extend(XMLProcessingInstruction, superClass);
+
+    function XMLProcessingInstruction(parent, target, value) {
+      XMLProcessingInstruction.__super__.constructor.call(this, parent);
+      if (target == null) {
+        throw new Error("Missing instruction target");
+      }
+      this.target = this.stringify.insTarget(target);
+      if (value) {
+        this.value = this.stringify.insValue(value);
+      }
+    }
+
+    XMLProcessingInstruction.prototype.clone = function() {
+      return Object.create(this);
+    };
+
+    XMLProcessingInstruction.prototype.toString = function(options) {
+      return this.options.writer.set(options).processingInstruction(this);
+    };
+
+    return XMLProcessingInstruction;
+
+  })(XMLNode);
+
+}).call(this);
+
+},{"./XMLNode":51}],53:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLNode, XMLRaw,
+    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
+    hasProp = {}.hasOwnProperty;
+
+  XMLNode = require('./XMLNode');
+
+  module.exports = XMLRaw = (function(superClass) {
+    extend(XMLRaw, superClass);
+
+    function XMLRaw(parent, text) {
+      XMLRaw.__super__.constructor.call(this, parent);
+      if (text == null) {
+        throw new Error("Missing raw text");
+      }
+      this.value = this.stringify.raw(text);
+    }
+
+    XMLRaw.prototype.clone = function() {
+      return Object.create(this);
+    };
+
+    XMLRaw.prototype.toString = function(options) {
+      return this.options.writer.set(options).raw(this);
+    };
+
+    return XMLRaw;
+
+  })(XMLNode);
+
+}).call(this);
+
+},{"./XMLNode":51}],54:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLCData, XMLComment, XMLDTDAttList, XMLDTDElement, XMLDTDEntity, XMLDTDNotation, XMLDeclaration, XMLDocType, XMLElement, XMLProcessingInstruction, XMLRaw, XMLStreamWriter, XMLText, XMLWriterBase,
+    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
+    hasProp = {}.hasOwnProperty;
+
+  XMLDeclaration = require('./XMLDeclaration');
+
+  XMLDocType = require('./XMLDocType');
+
+  XMLCData = require('./XMLCData');
+
+  XMLComment = require('./XMLComment');
+
+  XMLElement = require('./XMLElement');
+
+  XMLRaw = require('./XMLRaw');
+
+  XMLText = require('./XMLText');
+
+  XMLProcessingInstruction = require('./XMLProcessingInstruction');
+
+  XMLDTDAttList = require('./XMLDTDAttList');
+
+  XMLDTDElement = require('./XMLDTDElement');
+
+  XMLDTDEntity = require('./XMLDTDEntity');
+
+  XMLDTDNotation = require('./XMLDTDNotation');
+
+  XMLWriterBase = require('./XMLWriterBase');
+
+  module.exports = XMLStreamWriter = (function(superClass) {
+    extend(XMLStreamWriter, superClass);
+
+    function XMLStreamWriter(stream, options) {
+      XMLStreamWriter.__super__.constructor.call(this, options);
+      this.stream = stream;
+    }
+
+    XMLStreamWriter.prototype.document = function(doc) {
+      var child, i, j, len, len1, ref, ref1, results;
+      ref = doc.children;
+      for (i = 0, len = ref.length; i < len; i++) {
+        child = ref[i];
+        child.isLastRootNode = false;
+      }
+      doc.children[doc.children.length - 1].isLastRootNode = true;
+      ref1 = doc.children;
+      results = [];
+      for (j = 0, len1 = ref1.length; j < len1; j++) {
+        child = ref1[j];
+        switch (false) {
+          case !(child instanceof XMLDeclaration):
+            results.push(this.declaration(child));
+            break;
+          case !(child instanceof XMLDocType):
+            results.push(this.docType(child));
+            break;
+          case !(child instanceof XMLComment):
+            results.push(this.comment(child));
+            break;
+          case !(child instanceof XMLProcessingInstruction):
+            results.push(this.processingInstruction(child));
+            break;
+          default:
+            results.push(this.element(child));
+        }
+      }
+      return results;
+    };
+
+    XMLStreamWriter.prototype.attribute = function(att) {
+      return this.stream.write(' ' + att.name + '="' + att.value + '"');
+    };
+
+    XMLStreamWriter.prototype.cdata = function(node, level) {
+      return this.stream.write(this.space(level) + '<![CDATA[' + node.text + ']]>' + this.endline(node));
+    };
+
+    XMLStreamWriter.prototype.comment = function(node, level) {
+      return this.stream.write(this.space(level) + '<!-- ' + node.text + ' -->' + this.endline(node));
+    };
+
+    XMLStreamWriter.prototype.declaration = function(node, level) {
+      this.stream.write(this.space(level));
+      this.stream.write('<?xml version="' + node.version + '"');
+      if (node.encoding != null) {
+        this.stream.write(' encoding="' + node.encoding + '"');
+      }
+      if (node.standalone != null) {
+        this.stream.write(' standalone="' + node.standalone + '"');
+      }
+      this.stream.write(this.spacebeforeslash + '?>');
+      return this.stream.write(this.endline(node));
+    };
+
+    XMLStreamWriter.prototype.docType = function(node, level) {
+      var child, i, len, ref;
+      level || (level = 0);
+      this.stream.write(this.space(level));
+      this.stream.write('<!DOCTYPE ' + node.root().name);
+      if (node.pubID && node.sysID) {
+        this.stream.write(' PUBLIC "' + node.pubID + '" "' + node.sysID + '"');
+      } else if (node.sysID) {
+        this.stream.write(' SYSTEM "' + node.sysID + '"');
+      }
+      if (node.children.length > 0) {
+        this.stream.write(' [');
+        this.stream.write(this.endline(node));
+        ref = node.children;
+        for (i = 0, len = ref.length; i < len; i++) {
+          child = ref[i];
+          switch (false) {
+            case !(child instanceof XMLDTDAttList):
+              this.dtdAttList(child, level + 1);
+              break;
+            case !(child instanceof XMLDTDElement):
+              this.dtdElement(child, level + 1);
+              break;
+            case !(child instanceof XMLDTDEntity):
+              this.dtdEntity(child, level + 1);
+              break;
+            case !(child instanceof XMLDTDNotation):
+              this.dtdNotation(child, level + 1);
+              break;
+            case !(child instanceof XMLCData):
+              this.cdata(child, level + 1);
+              break;
+            case !(child instanceof XMLComment):
+              this.comment(child, level + 1);
+              break;
+            case !(child instanceof XMLProcessingInstruction):
+              this.processingInstruction(child, level + 1);
+              break;
+            default:
+              throw new Error("Unknown DTD node type: " + child.constructor.name);
+          }
+        }
+        this.stream.write(']');
+      }
+      this.stream.write(this.spacebeforeslash + '>');
+      return this.stream.write(this.endline(node));
+    };
+
+    XMLStreamWriter.prototype.element = function(node, level) {
+      var att, child, i, len, name, ref, ref1, space;
+      level || (level = 0);
+      space = this.space(level);
+      this.stream.write(space + '<' + node.name);
+      ref = node.attributes;
+      for (name in ref) {
+        if (!hasProp.call(ref, name)) continue;
+        att = ref[name];
+        this.attribute(att);
+      }
+      if (node.children.length === 0 || node.children.every(function(e) {
+        return e.value === '';
+      })) {
+        if (this.allowEmpty) {
+          this.stream.write('></' + node.name + '>');
+        } else {
+          this.stream.write(this.spacebeforeslash + '/>');
+        }
+      } else if (this.pretty && node.children.length === 1 && (node.children[0].value != null)) {
+        this.stream.write('>');
+        this.stream.write(node.children[0].value);
+        this.stream.write('</' + node.name + '>');
+      } else {
+        this.stream.write('>' + this.newline);
+        ref1 = node.children;
+        for (i = 0, len = ref1.length; i < len; i++) {
+          child = ref1[i];
+          switch (false) {
+            case !(child instanceof XMLCData):
+              this.cdata(child, level + 1);
+              break;
+            case !(child instanceof XMLComment):
+              this.comment(child, level + 1);
+              break;
+            case !(child instanceof XMLElement):
+              this.element(child, level + 1);
+              break;
+            case !(child instanceof XMLRaw):
+              this.raw(child, level + 1);
+              break;
+            case !(child instanceof XMLText):
+              this.text(child, level + 1);
+              break;
+            case !(child instanceof XMLProcessingInstruction):
+              this.processingInstruction(child, level + 1);
+              break;
+            default:
+              throw new Error("Unknown XML node type: " + child.constructor.name);
+          }
+        }
+        this.stream.write(space + '</' + node.name + '>');
+      }
+      return this.stream.write(this.endline(node));
+    };
+
+    XMLStreamWriter.prototype.processingInstruction = function(node, level) {
+      this.stream.write(this.space(level) + '<?' + node.target);
+      if (node.value) {
+        this.stream.write(' ' + node.value);
+      }
+      return this.stream.write(this.spacebeforeslash + '?>' + this.endline(node));
+    };
+
+    XMLStreamWriter.prototype.raw = function(node, level) {
+      return this.stream.write(this.space(level) + node.value + this.endline(node));
+    };
+
+    XMLStreamWriter.prototype.text = function(node, level) {
+      return this.stream.write(this.space(level) + node.value + this.endline(node));
+    };
+
+    XMLStreamWriter.prototype.dtdAttList = function(node, level) {
+      this.stream.write(this.space(level) + '<!ATTLIST ' + node.elementName + ' ' + node.attributeName + ' ' + node.attributeType);
+      if (node.defaultValueType !== '#DEFAULT') {
+        this.stream.write(' ' + node.defaultValueType);
+      }
+      if (node.defaultValue) {
+        this.stream.write(' "' + node.defaultValue + '"');
+      }
+      return this.stream.write(this.spacebeforeslash + '>' + this.endline(node));
+    };
+
+    XMLStreamWriter.prototype.dtdElement = function(node, level) {
+      this.stream.write(this.space(level) + '<!ELEMENT ' + node.name + ' ' + node.value);
+      return this.stream.write(this.spacebeforeslash + '>' + this.endline(node));
+    };
+
+    XMLStreamWriter.prototype.dtdEntity = function(node, level) {
+      this.stream.write(this.space(level) + '<!ENTITY');
+      if (node.pe) {
+        this.stream.write(' %');
+      }
+      this.stream.write(' ' + node.name);
+      if (node.value) {
+        this.stream.write(' "' + node.value + '"');
+      } else {
+        if (node.pubID && node.sysID) {
+          this.stream.write(' PUBLIC "' + node.pubID + '" "' + node.sysID + '"');
+        } else if (node.sysID) {
+          this.stream.write(' SYSTEM "' + node.sysID + '"');
+        }
+        if (node.nData) {
+          this.stream.write(' NDATA ' + node.nData);
+        }
+      }
+      return this.stream.write(this.spacebeforeslash + '>' + this.endline(node));
+    };
+
+    XMLStreamWriter.prototype.dtdNotation = function(node, level) {
+      this.stream.write(this.space(level) + '<!NOTATION ' + node.name);
+      if (node.pubID && node.sysID) {
+        this.stream.write(' PUBLIC "' + node.pubID + '" "' + node.sysID + '"');
+      } else if (node.pubID) {
+        this.stream.write(' PUBLIC "' + node.pubID + '"');
+      } else if (node.sysID) {
+        this.stream.write(' SYSTEM "' + node.sysID + '"');
+      }
+      return this.stream.write(this.spacebeforeslash + '>' + this.endline(node));
+    };
+
+    XMLStreamWriter.prototype.endline = function(node) {
+      if (!node.isLastRootNode) {
+        return this.newline;
+      } else {
+        return '';
+      }
+    };
+
+    return XMLStreamWriter;
+
+  })(XMLWriterBase);
+
+}).call(this);
+
+},{"./XMLCData":40,"./XMLComment":41,"./XMLDTDAttList":42,"./XMLDTDElement":43,"./XMLDTDEntity":44,"./XMLDTDNotation":45,"./XMLDeclaration":46,"./XMLDocType":47,"./XMLElement":50,"./XMLProcessingInstruction":52,"./XMLRaw":53,"./XMLText":57,"./XMLWriterBase":58}],55:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLCData, XMLComment, XMLDTDAttList, XMLDTDElement, XMLDTDEntity, XMLDTDNotation, XMLDeclaration, XMLDocType, XMLElement, XMLProcessingInstruction, XMLRaw, XMLStringWriter, XMLText, XMLWriterBase,
+    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
+    hasProp = {}.hasOwnProperty;
+
+  XMLDeclaration = require('./XMLDeclaration');
+
+  XMLDocType = require('./XMLDocType');
+
+  XMLCData = require('./XMLCData');
+
+  XMLComment = require('./XMLComment');
+
+  XMLElement = require('./XMLElement');
+
+  XMLRaw = require('./XMLRaw');
+
+  XMLText = require('./XMLText');
+
+  XMLProcessingInstruction = require('./XMLProcessingInstruction');
+
+  XMLDTDAttList = require('./XMLDTDAttList');
+
+  XMLDTDElement = require('./XMLDTDElement');
+
+  XMLDTDEntity = require('./XMLDTDEntity');
+
+  XMLDTDNotation = require('./XMLDTDNotation');
+
+  XMLWriterBase = require('./XMLWriterBase');
+
+  module.exports = XMLStringWriter = (function(superClass) {
+    extend(XMLStringWriter, superClass);
+
+    function XMLStringWriter(options) {
+      XMLStringWriter.__super__.constructor.call(this, options);
+    }
+
+    XMLStringWriter.prototype.document = function(doc) {
+      var child, i, len, r, ref;
+      this.textispresent = false;
+      r = '';
+      ref = doc.children;
+      for (i = 0, len = ref.length; i < len; i++) {
+        child = ref[i];
+        r += (function() {
+          switch (false) {
+            case !(child instanceof XMLDeclaration):
+              return this.declaration(child);
+            case !(child instanceof XMLDocType):
+              return this.docType(child);
+            case !(child instanceof XMLComment):
+              return this.comment(child);
+            case !(child instanceof XMLProcessingInstruction):
+              return this.processingInstruction(child);
+            default:
+              return this.element(child, 0);
+          }
+        }).call(this);
+      }
+      if (this.pretty && r.slice(-this.newline.length) === this.newline) {
+        r = r.slice(0, -this.newline.length);
+      }
+      return r;
+    };
+
+    XMLStringWriter.prototype.attribute = function(att) {
+      return ' ' + att.name + '="' + att.value + '"';
+    };
+
+    XMLStringWriter.prototype.cdata = function(node, level) {
+      return this.space(level) + '<![CDATA[' + node.text + ']]>' + this.newline;
+    };
+
+    XMLStringWriter.prototype.comment = function(node, level) {
+      return this.space(level) + '<!-- ' + node.text + ' -->' + this.newline;
+    };
+
+    XMLStringWriter.prototype.declaration = function(node, level) {
+      var r;
+      r = this.space(level);
+      r += '<?xml version="' + node.version + '"';
+      if (node.encoding != null) {
+        r += ' encoding="' + node.encoding + '"';
+      }
+      if (node.standalone != null) {
+        r += ' standalone="' + node.standalone + '"';
+      }
+      r += this.spacebeforeslash + '?>';
+      r += this.newline;
+      return r;
+    };
+
+    XMLStringWriter.prototype.docType = function(node, level) {
+      var child, i, len, r, ref;
+      level || (level = 0);
+      r = this.space(level);
+      r += '<!DOCTYPE ' + node.root().name;
+      if (node.pubID && node.sysID) {
+        r += ' PUBLIC "' + node.pubID + '" "' + node.sysID + '"';
+      } else if (node.sysID) {
+        r += ' SYSTEM "' + node.sysID + '"';
+      }
+      if (node.children.length > 0) {
+        r += ' [';
+        r += this.newline;
+        ref = node.children;
+        for (i = 0, len = ref.length; i < len; i++) {
+          child = ref[i];
+          r += (function() {
+            switch (false) {
+              case !(child instanceof XMLDTDAttList):
+                return this.dtdAttList(child, level + 1);
+              case !(child instanceof XMLDTDElement):
+                return this.dtdElement(child, level + 1);
+              case !(child instanceof XMLDTDEntity):
+                return this.dtdEntity(child, level + 1);
+              case !(child instanceof XMLDTDNotation):
+                return this.dtdNotation(child, level + 1);
+              case !(child instanceof XMLCData):
+                return this.cdata(child, level + 1);
+              case !(child instanceof XMLComment):
+                return this.comment(child, level + 1);
+              case !(child instanceof XMLProcessingInstruction):
+                return this.processingInstruction(child, level + 1);
+              default:
+                throw new Error("Unknown DTD node type: " + child.constructor.name);
+            }
+          }).call(this);
+        }
+        r += ']';
+      }
+      r += this.spacebeforeslash + '>';
+      r += this.newline;
+      return r;
+    };
+
+    XMLStringWriter.prototype.element = function(node, level) {
+      var att, child, i, j, len, len1, name, r, ref, ref1, ref2, space, textispresentwasset;
+      level || (level = 0);
+      textispresentwasset = false;
+      if (this.textispresent) {
+        this.newline = '';
+        this.pretty = false;
+      } else {
+        this.newline = this.newlinedefault;
+        this.pretty = this.prettydefault;
+      }
+      space = this.space(level);
+      r = '';
+      r += space + '<' + node.name;
+      ref = node.attributes;
+      for (name in ref) {
+        if (!hasProp.call(ref, name)) continue;
+        att = ref[name];
+        r += this.attribute(att);
+      }
+      if (node.children.length === 0 || node.children.every(function(e) {
+        return e.value === '';
+      })) {
+        if (this.allowEmpty) {
+          r += '></' + node.name + '>' + this.newline;
+        } else {
+          r += this.spacebeforeslash + '/>' + this.newline;
+        }
+      } else if (this.pretty && node.children.length === 1 && (node.children[0].value != null)) {
+        r += '>';
+        r += node.children[0].value;
+        r += '</' + node.name + '>' + this.newline;
+      } else {
+        if (this.dontprettytextnodes) {
+          ref1 = node.children;
+          for (i = 0, len = ref1.length; i < len; i++) {
+            child = ref1[i];
+            if (child.value != null) {
+              this.textispresent++;
+              textispresentwasset = true;
+              break;
+            }
+          }
+        }
+        if (this.textispresent) {
+          this.newline = '';
+          this.pretty = false;
+          space = this.space(level);
+        }
+        r += '>' + this.newline;
+        ref2 = node.children;
+        for (j = 0, len1 = ref2.length; j < len1; j++) {
+          child = ref2[j];
+          r += (function() {
+            switch (false) {
+              case !(child instanceof XMLCData):
+                return this.cdata(child, level + 1);
+              case !(child instanceof XMLComment):
+                return this.comment(child, level + 1);
+              case !(child instanceof XMLElement):
+                return this.element(child, level + 1);
+              case !(child instanceof XMLRaw):
+                return this.raw(child, level + 1);
+              case !(child instanceof XMLText):
+                return this.text(child, level + 1);
+              case !(child instanceof XMLProcessingInstruction):
+                return this.processingInstruction(child, level + 1);
+              default:
+                throw new Error("Unknown XML node type: " + child.constructor.name);
+            }
+          }).call(this);
+        }
+        if (textispresentwasset) {
+          this.textispresent--;
+        }
+        if (!this.textispresent) {
+          this.newline = this.newlinedefault;
+          this.pretty = this.prettydefault;
+        }
+        r += space + '</' + node.name + '>' + this.newline;
+      }
+      return r;
+    };
+
+    XMLStringWriter.prototype.processingInstruction = function(node, level) {
+      var r;
+      r = this.space(level) + '<?' + node.target;
+      if (node.value) {
+        r += ' ' + node.value;
+      }
+      r += this.spacebeforeslash + '?>' + this.newline;
+      return r;
+    };
+
+    XMLStringWriter.prototype.raw = function(node, level) {
+      return this.space(level) + node.value + this.newline;
+    };
+
+    XMLStringWriter.prototype.text = function(node, level) {
+      return this.space(level) + node.value + this.newline;
+    };
+
+    XMLStringWriter.prototype.dtdAttList = function(node, level) {
+      var r;
+      r = this.space(level) + '<!ATTLIST ' + node.elementName + ' ' + node.attributeName + ' ' + node.attributeType;
+      if (node.defaultValueType !== '#DEFAULT') {
+        r += ' ' + node.defaultValueType;
+      }
+      if (node.defaultValue) {
+        r += ' "' + node.defaultValue + '"';
+      }
+      r += this.spacebeforeslash + '>' + this.newline;
+      return r;
+    };
+
+    XMLStringWriter.prototype.dtdElement = function(node, level) {
+      return this.space(level) + '<!ELEMENT ' + node.name + ' ' + node.value + this.spacebeforeslash + '>' + this.newline;
+    };
+
+    XMLStringWriter.prototype.dtdEntity = function(node, level) {
+      var r;
+      r = this.space(level) + '<!ENTITY';
+      if (node.pe) {
+        r += ' %';
+      }
+      r += ' ' + node.name;
+      if (node.value) {
+        r += ' "' + node.value + '"';
+      } else {
+        if (node.pubID && node.sysID) {
+          r += ' PUBLIC "' + node.pubID + '" "' + node.sysID + '"';
+        } else if (node.sysID) {
+          r += ' SYSTEM "' + node.sysID + '"';
+        }
+        if (node.nData) {
+          r += ' NDATA ' + node.nData;
+        }
+      }
+      r += this.spacebeforeslash + '>' + this.newline;
+      return r;
+    };
+
+    XMLStringWriter.prototype.dtdNotation = function(node, level) {
+      var r;
+      r = this.space(level) + '<!NOTATION ' + node.name;
+      if (node.pubID && node.sysID) {
+        r += ' PUBLIC "' + node.pubID + '" "' + node.sysID + '"';
+      } else if (node.pubID) {
+        r += ' PUBLIC "' + node.pubID + '"';
+      } else if (node.sysID) {
+        r += ' SYSTEM "' + node.sysID + '"';
+      }
+      r += this.spacebeforeslash + '>' + this.newline;
+      return r;
+    };
+
+    XMLStringWriter.prototype.openNode = function(node, level) {
+      var att, name, r, ref;
+      level || (level = 0);
+      if (node instanceof XMLElement) {
+        r = this.space(level) + '<' + node.name;
+        ref = node.attributes;
+        for (name in ref) {
+          if (!hasProp.call(ref, name)) continue;
+          att = ref[name];
+          r += this.attribute(att);
+        }
+        r += (node.children ? '>' : '/>') + this.newline;
+        return r;
+      } else {
+        r = this.space(level) + '<!DOCTYPE ' + node.rootNodeName;
+        if (node.pubID && node.sysID) {
+          r += ' PUBLIC "' + node.pubID + '" "' + node.sysID + '"';
+        } else if (node.sysID) {
+          r += ' SYSTEM "' + node.sysID + '"';
+        }
+        r += (node.children ? ' [' : '>') + this.newline;
+        return r;
+      }
+    };
+
+    XMLStringWriter.prototype.closeNode = function(node, level) {
+      level || (level = 0);
+      switch (false) {
+        case !(node instanceof XMLElement):
+          return this.space(level) + '</' + node.name + '>' + this.newline;
+        case !(node instanceof XMLDocType):
+          return this.space(level) + ']>' + this.newline;
+      }
+    };
+
+    return XMLStringWriter;
+
+  })(XMLWriterBase);
+
+}).call(this);
+
+},{"./XMLCData":40,"./XMLComment":41,"./XMLDTDAttList":42,"./XMLDTDElement":43,"./XMLDTDEntity":44,"./XMLDTDNotation":45,"./XMLDeclaration":46,"./XMLDocType":47,"./XMLElement":50,"./XMLProcessingInstruction":52,"./XMLRaw":53,"./XMLText":57,"./XMLWriterBase":58}],56:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLStringifier,
+    bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
+    hasProp = {}.hasOwnProperty;
+
+  module.exports = XMLStringifier = (function() {
+    function XMLStringifier(options) {
+      this.assertLegalChar = bind(this.assertLegalChar, this);
+      var key, ref, value;
+      options || (options = {});
+      this.noDoubleEncoding = options.noDoubleEncoding;
+      ref = options.stringify || {};
+      for (key in ref) {
+        if (!hasProp.call(ref, key)) continue;
+        value = ref[key];
+        this[key] = value;
+      }
+    }
+
+    XMLStringifier.prototype.eleName = function(val) {
+      val = '' + val || '';
+      return this.assertLegalChar(val);
+    };
+
+    XMLStringifier.prototype.eleText = function(val) {
+      val = '' + val || '';
+      return this.assertLegalChar(this.elEscape(val));
+    };
+
+    XMLStringifier.prototype.cdata = function(val) {
+      val = '' + val || '';
+      val = val.replace(']]>', ']]]]><![CDATA[>');
+      return this.assertLegalChar(val);
+    };
+
+    XMLStringifier.prototype.comment = function(val) {
+      val = '' + val || '';
+      if (val.match(/--/)) {
+        throw new Error("Comment text cannot contain double-hypen: " + val);
+      }
+      return this.assertLegalChar(val);
+    };
+
+    XMLStringifier.prototype.raw = function(val) {
+      return '' + val || '';
+    };
+
+    XMLStringifier.prototype.attName = function(val) {
+      return val = '' + val || '';
+    };
+
+    XMLStringifier.prototype.attValue = function(val) {
+      val = '' + val || '';
+      return this.attEscape(val);
+    };
+
+    XMLStringifier.prototype.insTarget = function(val) {
+      return '' + val || '';
+    };
+
+    XMLStringifier.prototype.insValue = function(val) {
+      val = '' + val || '';
+      if (val.match(/\?>/)) {
+        throw new Error("Invalid processing instruction value: " + val);
+      }
+      return val;
+    };
+
+    XMLStringifier.prototype.xmlVersion = function(val) {
+      val = '' + val || '';
+      if (!val.match(/1\.[0-9]+/)) {
+        throw new Error("Invalid version number: " + val);
+      }
+      return val;
+    };
+
+    XMLStringifier.prototype.xmlEncoding = function(val) {
+      val = '' + val || '';
+      if (!val.match(/^[A-Za-z](?:[A-Za-z0-9._-])*$/)) {
+        throw new Error("Invalid encoding: " + val);
+      }
+      return val;
+    };
+
+    XMLStringifier.prototype.xmlStandalone = function(val) {
+      if (val) {
+        return "yes";
+      } else {
+        return "no";
+      }
+    };
+
+    XMLStringifier.prototype.dtdPubID = function(val) {
+      return '' + val || '';
+    };
+
+    XMLStringifier.prototype.dtdSysID = function(val) {
+      return '' + val || '';
+    };
+
+    XMLStringifier.prototype.dtdElementValue = function(val) {
+      return '' + val || '';
+    };
+
+    XMLStringifier.prototype.dtdAttType = function(val) {
+      return '' + val || '';
+    };
+
+    XMLStringifier.prototype.dtdAttDefault = function(val) {
+      if (val != null) {
+        return '' + val || '';
+      } else {
+        return val;
+      }
+    };
+
+    XMLStringifier.prototype.dtdEntityValue = function(val) {
+      return '' + val || '';
+    };
+
+    XMLStringifier.prototype.dtdNData = function(val) {
+      return '' + val || '';
+    };
+
+    XMLStringifier.prototype.convertAttKey = '@';
+
+    XMLStringifier.prototype.convertPIKey = '?';
+
+    XMLStringifier.prototype.convertTextKey = '#text';
+
+    XMLStringifier.prototype.convertCDataKey = '#cdata';
+
+    XMLStringifier.prototype.convertCommentKey = '#comment';
+
+    XMLStringifier.prototype.convertRawKey = '#raw';
+
+    XMLStringifier.prototype.assertLegalChar = function(str) {
+      var res;
+      res = str.match(/[\0\uFFFE\uFFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF]/);
+      if (res) {
+        throw new Error("Invalid character in string: " + str + " at index " + res.index);
+      }
+      return str;
+    };
+
+    XMLStringifier.prototype.elEscape = function(str) {
+      var ampregex;
+      ampregex = this.noDoubleEncoding ? /(?!&\S+;)&/g : /&/g;
+      return str.replace(ampregex, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/\r/g, '&#xD;');
+    };
+
+    XMLStringifier.prototype.attEscape = function(str) {
+      var ampregex;
+      ampregex = this.noDoubleEncoding ? /(?!&\S+;)&/g : /&/g;
+      return str.replace(ampregex, '&amp;').replace(/</g, '&lt;').replace(/"/g, '&quot;').replace(/\t/g, '&#x9;').replace(/\n/g, '&#xA;').replace(/\r/g, '&#xD;');
+    };
+
+    return XMLStringifier;
+
+  })();
+
+}).call(this);
+
+},{}],57:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLNode, XMLText,
+    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
+    hasProp = {}.hasOwnProperty;
+
+  XMLNode = require('./XMLNode');
+
+  module.exports = XMLText = (function(superClass) {
+    extend(XMLText, superClass);
+
+    function XMLText(parent, text) {
+      XMLText.__super__.constructor.call(this, parent);
+      if (text == null) {
+        throw new Error("Missing element text");
+      }
+      this.value = this.stringify.eleText(text);
+    }
+
+    XMLText.prototype.clone = function() {
+      return Object.create(this);
+    };
+
+    XMLText.prototype.toString = function(options) {
+      return this.options.writer.set(options).text(this);
+    };
+
+    return XMLText;
+
+  })(XMLNode);
+
+}).call(this);
+
+},{"./XMLNode":51}],58:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLWriterBase,
+    hasProp = {}.hasOwnProperty;
+
+  module.exports = XMLWriterBase = (function() {
+    function XMLWriterBase(options) {
+      var key, ref, ref1, ref2, ref3, ref4, ref5, ref6, value;
+      options || (options = {});
+      this.pretty = options.pretty || false;
+      this.allowEmpty = (ref = options.allowEmpty) != null ? ref : false;
+      if (this.pretty) {
+        this.indent = (ref1 = options.indent) != null ? ref1 : '  ';
+        this.newline = (ref2 = options.newline) != null ? ref2 : '\n';
+        this.offset = (ref3 = options.offset) != null ? ref3 : 0;
+        this.dontprettytextnodes = (ref4 = options.dontprettytextnodes) != null ? ref4 : 0;
+      } else {
+        this.indent = '';
+        this.newline = '';
+        this.offset = 0;
+        this.dontprettytextnodes = 0;
+      }
+      this.spacebeforeslash = (ref5 = options.spacebeforeslash) != null ? ref5 : '';
+      if (this.spacebeforeslash === true) {
+        this.spacebeforeslash = ' ';
+      }
+      this.newlinedefault = this.newline;
+      this.prettydefault = this.pretty;
+      ref6 = options.writer || {};
+      for (key in ref6) {
+        if (!hasProp.call(ref6, key)) continue;
+        value = ref6[key];
+        this[key] = value;
+      }
+    }
+
+    XMLWriterBase.prototype.set = function(options) {
+      var key, ref, value;
+      options || (options = {});
+      if ("pretty" in options) {
+        this.pretty = options.pretty;
+      }
+      if ("allowEmpty" in options) {
+        this.allowEmpty = options.allowEmpty;
+      }
+      if (this.pretty) {
+        this.indent = "indent" in options ? options.indent : '  ';
+        this.newline = "newline" in options ? options.newline : '\n';
+        this.offset = "offset" in options ? options.offset : 0;
+        this.dontprettytextnodes = "dontprettytextnodes" in options ? options.dontprettytextnodes : 0;
+      } else {
+        this.indent = '';
+        this.newline = '';
+        this.offset = 0;
+        this.dontprettytextnodes = 0;
+      }
+      this.spacebeforeslash = "spacebeforeslash" in options ? options.spacebeforeslash : '';
+      if (this.spacebeforeslash === true) {
+        this.spacebeforeslash = ' ';
+      }
+      this.newlinedefault = this.newline;
+      this.prettydefault = this.pretty;
+      ref = options.writer || {};
+      for (key in ref) {
+        if (!hasProp.call(ref, key)) continue;
+        value = ref[key];
+        this[key] = value;
+      }
+      return this;
+    };
+
+    XMLWriterBase.prototype.space = function(level) {
+      var indent;
+      if (this.pretty) {
+        indent = (level || 0) + this.offset + 1;
+        if (indent > 0) {
+          return new Array(indent).join(this.indent);
+        } else {
+          return '';
+        }
+      } else {
+        return '';
+      }
+    };
+
+    return XMLWriterBase;
+
+  })();
+
+}).call(this);
+
+},{}],59:[function(require,module,exports){
+// Generated by CoffeeScript 1.12.7
+(function() {
+  var XMLDocument, XMLDocumentCB, XMLStreamWriter, XMLStringWriter, assign, isFunction, ref;
+
+  ref = require('./Utility'), assign = ref.assign, isFunction = ref.isFunction;
+
+  XMLDocument = require('./XMLDocument');
+
+  XMLDocumentCB = require('./XMLDocumentCB');
+
+  XMLStringWriter = require('./XMLStringWriter');
+
+  XMLStreamWriter = require('./XMLStreamWriter');
+
+  module.exports.create = function(name, xmldec, doctype, options) {
+    var doc, root;
+    if (name == null) {
+      throw new Error("Root element needs a name");
+    }
+    options = assign({}, xmldec, doctype, options);
+    doc = new XMLDocument(options);
+    root = doc.element(name);
+    if (!options.headless) {
+      doc.declaration(options);
+      if ((options.pubID != null) || (options.sysID != null)) {
+        doc.doctype(options);
+      }
+    }
+    return root;
+  };
+
+  module.exports.begin = function(options, onData, onEnd) {
+    var ref1;
+    if (isFunction(options)) {
+      ref1 = [options, onData], onData = ref1[0], onEnd = ref1[1];
+      options = {};
+    }
+    if (onData) {
+      return new XMLDocumentCB(options, onData, onEnd);
+    } else {
+      return new XMLDocument(options);
+    }
+  };
+
+  module.exports.stringWriter = function(options) {
+    return new XMLStringWriter(options);
+  };
+
+  module.exports.streamWriter = function(stream, options) {
+    return new XMLStreamWriter(stream, options);
+  };
+
+}).call(this);
+
+},{"./Utility":38,"./XMLDocument":48,"./XMLDocumentCB":49,"./XMLStreamWriter":54,"./XMLStringWriter":55}],60:[function(require,module,exports){
+
+var xml2js = require('xml2js');
+window.xml2js = xml2js;
+
+},{"xml2js":37}]},{},[60]);