ankitdbst · December 7, 2014 12:23
diff --git a/todo-world_.idea_.name b/todo-world_.idea_.name
 todo-world
diff --git a/todo-world_.idea_encodings.xml b/todo-world_.idea_encodings.xml
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
  <component name="Encoding" useUTFGuessing="true" native2AsciiForPropertiesFiles="false" />
 </project>
diff --git a/todo-world_.idea_misc.xml b/todo-world_.idea_misc.xml
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
  <component name="ProjectRootManager" version="2" />
 </project>
diff --git a/todo-world_.idea_modules.xml b/todo-world_.idea_modules.xml
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
  <component name="ProjectModuleManager">
    <modules>
      <module fileurl="file://$PROJECT_DIR$/.idea/todo-world.iml" filepath="$PROJECT_DIR$/.idea/todo-world.iml" />
    </modules>
  </component>
 </project>
diff --git a/todo-world_.idea_scopes_scope_settings.xml b/todo-world_.idea_scopes_scope_settings.xml
 <component name="DependencyValidationManager">
  <state>
    <option name="SKIP_IMPORT_STATEMENTS" value="false" />
  </state>
 </component>
diff --git a/todo-world_.idea_todo-world.iml b/todo-world_.idea_todo-world.iml
 <?xml version="1.0" encoding="UTF-8"?>
 <module type="WEB_MODULE" version="4">
  <component name="NewModuleRootManager">
    <content url="file://$MODULE_DIR$" />
    <orderEntry type="inheritedJdk" />
    <orderEntry type="sourceFolder" forTests="false" />
  </component>
 </module>
diff --git a/todo-world_.idea_vcs.xml b/todo-world_.idea_vcs.xml
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
  <component name="VcsDirectoryMappings">
    <mapping directory="" vcs="" />
  </component>
 </project>
diff --git a/todo-world_index.html b/todo-world_index.html
 <!-- template.html -->
 <html>
 <head>
    <title>Hello React</title>
    <script src="/js/libs/react-0.12.1.js"></script>
    <script src="/js/libs/JSXTransformer-0.12.1.js"></script>
    <script src="/js/libs/jquery-1.10.0.min.js"></script>
    <script src="/js/libs/underscore-min.js"></script>
    <script src="/js/libs/backbone-min.js"></script>
 </head>
 <body>
 <div id="content"></div>
 <script type="text/jsx">
    var TodoModel = Backbone.Model.extend({
       defaults: {
           title: '',
           isCompleted: false
       }
    });

    var TodoCollection = Backbone.Collection.extend({
        model: TodoModel
    });

    var todos = new TodoCollection();
    todos.add([
        { title: 'do task a' },
        { title: 'do task b' },
        { title: 'do task c' },
        { title: 'do task d' }
    ]);

    var TodoBox = React.createClass({
        getInitialState: function() {
            return { data: this.props.data };
        },

        handleSubmit: function(title) {
            this.state.data.add({ title: title });
            this.setState({ data: this.state.data });
        },

        render: function() {
            return (
                <div className="todoBox">
                    Welcome to Todo .next
                    <TodoForm handleSubmit={this.handleSubmit}/>
                    <TodoList data={this.state.data} />
                </div>
            )
        }
    })

    var TodoList = React.createClass({
        render: function() {
            var models = this.props.data.toJSON();
            var todoNodes = models.map(function(model) {
                return <Todo data={model} />
            });

            return (
                <ul>
                    {todoNodes}
                </ul>
            );
        }
    });

    var Todo = React.createClass({
        render: function() {
            return (
                <li className="todo">
                    {this.props.data.title}
                </li>
            );
        }
    });

    var TodoForm = React.createClass({
        handleSubmit: function(e) {
            e.preventDefault();
            var title = this.refs.title.getDOMNode().value.trim();
            if (!title) return;
            this.props.handleSubmit(title);
            this.refs.title.getDOMNode().value = '';
            return;
        },

        render: function() {
            return (
                <form className="todoForm" onSubmit={this.handleSubmit}>
                    <input type="text" placeholder="insert todo text here..." ref="title" />
                    <input type="submit" value="Submit" />
                </form>
            );
        }
    });

    React.render(
        <TodoBox data={todos} />,
        document.querySelector('#content')
    );
 </script>
 </body>
 </html>
diff --git a/todo-world_js_libs_backbone-min.js b/todo-world_js_libs_backbone-min.js
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diff --git a/todo-world_js_libs_JSXTransformer-0.12.1.js b/todo-world_js_libs_JSXTransformer-0.12.1.js
 /**
 * JSXTransformer v0.12.1
 */
 !function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.JSXTransformer=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */
 /* jshint browser: true */
 /* jslint evil: true */

 'use strict';

 var buffer = _dereq_('buffer');
 var transform = _dereq_('jstransform').transform;
 var typesSyntax = _dereq_('jstransform/visitors/type-syntax');
 var visitors = _dereq_('./fbtransform/visitors');

 var headEl;
 var dummyAnchor;
 var inlineScriptCount = 0;

 // The source-map library relies on Object.defineProperty, but IE8 doesn't
 // support it fully even with es5-sham. Indeed, es5-sham's defineProperty
 // throws when Object.prototype.__defineGetter__ is missing, so we skip building
 // the source map in that case.
 var supportsAccessors = Object.prototype.hasOwnProperty('__defineGetter__');

 /**
 * Run provided code through jstransform.
 *
 * @param {string} source Original source code
 * @param {object?} options Options to pass to jstransform
 * @return {object} object as returned from jstransform
 */
 function transformReact(source, options) {
  // TODO: just use react-tools
  options = options || {};
  var visitorList;
  if (options.harmony) {
    visitorList = visitors.getAllVisitors();
  } else {
    visitorList = visitors.transformVisitors.react;
  }

  if (options.stripTypes) {
    // Stripping types needs to happen before the other transforms
    // unfortunately, due to bad interactions. For example,
    // es6-rest-param-visitors conflict with stripping rest param type
    // annotation
    source = transform(typesSyntax.visitorList, source, options).code;
  }

  return transform(visitorList, source, {
    sourceMap: supportsAccessors && options.sourceMap
  });
 }

 /**
 * Eval provided source after transforming it.
 *
 * @param {string} source Original source code
 * @param {object?} options Options to pass to jstransform
 */
 function exec(source, options) {
  return eval(transformReact(source, options).code);
 }

 /**
 * This method returns a nicely formated line of code pointing to the exact
 * location of the error `e`. The line is limited in size so big lines of code
 * are also shown in a readable way.
 *
 * Example:
 * ... x', overflow:'scroll'}} id={} onScroll={this.scroll} class=" ...
 * ^
 *
 * @param {string} code The full string of code
 * @param {Error} e The error being thrown
 * @return {string} formatted message
 * @internal
 */
 function createSourceCodeErrorMessage(code, e) {
  var sourceLines = code.split('\n');
  var erroneousLine = sourceLines[e.lineNumber - 1];

  // Removes any leading indenting spaces and gets the number of
  // chars indenting the `erroneousLine`
  var indentation = 0;
  erroneousLine = erroneousLine.replace(/^\s+/, function(leadingSpaces) {
    indentation = leadingSpaces.length;
    return '';
  });

  // Defines the number of characters that are going to show
  // before and after the erroneous code
  var LIMIT = 30;
  var errorColumn = e.column - indentation;

  if (errorColumn > LIMIT) {
    erroneousLine = '... ' + erroneousLine.slice(errorColumn - LIMIT);
    errorColumn = 4 + LIMIT;
  }
  if (erroneousLine.length - errorColumn > LIMIT) {
    erroneousLine = erroneousLine.slice(0, errorColumn + LIMIT) + ' ...';
  }
  var message = '\n\n' + erroneousLine + '\n';
  message += new Array(errorColumn - 1).join(' ') + '^';
  return message;
 }

 /**
 * Actually transform the code.
 *
 * @param {string} code
 * @param {string?} url
 * @param {object?} options
 * @return {string} The transformed code.
 * @internal
 */
 function transformCode(code, url, options) {
  try {
    var transformed = transformReact(code, options);
  } catch(e) {
    e.message += '\n    at ';
    if (url) {
      if ('fileName' in e) {
        // We set `fileName` if it's supported by this error object and
        // a `url` was provided.
        // The error will correctly point to `url` in Firefox.
        e.fileName = url;
      }
      e.message += url + ':' + e.lineNumber + ':' + e.column;
    } else {
      e.message += location.href;
    }
    e.message += createSourceCodeErrorMessage(code, e);
    throw e;
  }

  if (!transformed.sourceMap) {
    return transformed.code;
  }

  var map = transformed.sourceMap.toJSON();
  var source;
  if (url == null) {
    source = "Inline JSX script";
    inlineScriptCount++;
    if (inlineScriptCount > 1) {
      source += ' (' + inlineScriptCount + ')';
    }
  } else if (dummyAnchor) {
    // Firefox has problems when the sourcemap source is a proper URL with a
    // protocol and hostname, so use the pathname. We could use just the
    // filename, but hopefully using the full path will prevent potential
    // issues where the same filename exists in multiple directories.
    dummyAnchor.href = url;
    source = dummyAnchor.pathname.substr(1);
  }
  map.sources = [source];
  map.sourcesContent = [code];

  return (
    transformed.code +
    '\n//# sourceMappingURL=data:application/json;base64,' +
    buffer.Buffer(JSON.stringify(map)).toString('base64')
  );
 }


 /**
 * Appends a script element at the end of the <head> with the content of code,
 * after transforming it.
 *
 * @param {string} code The original source code
 * @param {string?} url Where the code came from. null if inline
 * @param {object?} options Options to pass to jstransform
 * @internal
 */
 function run(code, url, options) {
  var scriptEl = document.createElement('script');
  scriptEl.text = transformCode(code, url, options);
  headEl.appendChild(scriptEl);
 }

 /**
 * Load script from the provided url and pass the content to the callback.
 *
 * @param {string} url The location of the script src
 * @param {function} callback Function to call with the content of url
 * @internal
 */
 function load(url, successCallback, errorCallback) {
  var xhr;
  xhr = window.ActiveXObject ? new window.ActiveXObject('Microsoft.XMLHTTP')
                             : new XMLHttpRequest();

  // async, however scripts will be executed in the order they are in the
  // DOM to mirror normal script loading.
  xhr.open('GET', url, true);
  if ('overrideMimeType' in xhr) {
    xhr.overrideMimeType('text/plain');
  }
  xhr.onreadystatechange = function() {
    if (xhr.readyState === 4) {
      if (xhr.status === 0 || xhr.status === 200) {
        successCallback(xhr.responseText);
      } else {
        errorCallback();
        throw new Error("Could not load " + url);
      }
    }
  };
  return xhr.send(null);
 }

 /**
 * Loop over provided script tags and get the content, via innerHTML if an
 * inline script, or by using XHR. Transforms are applied if needed. The scripts
 * are executed in the order they are found on the page.
 *
 * @param {array} scripts The <script> elements to load and run.
 * @internal
 */
 function loadScripts(scripts) {
  var result = [];
  var count = scripts.length;

  function check() {
    var script, i;

    for (i = 0; i < count; i++) {
      script = result[i];

      if (script.loaded && !script.executed) {
        script.executed = true;
        run(script.content, script.url, script.options);
      } else if (!script.loaded && !script.error && !script.async) {
        break;
      }
    }
  }

  scripts.forEach(function(script, i) {
    var options = {
      sourceMap: true
    };
    if (/;harmony=true(;|$)/.test(script.type)) {
      options.harmony = true
    }
    if (/;stripTypes=true(;|$)/.test(script.type)) {
      options.stripTypes = true;
    }

    // script.async is always true for non-javascript script tags
    var async = script.hasAttribute('async');

    if (script.src) {
      result[i] = {
        async: async,
        error: false,
        executed: false,
        content: null,
        loaded: false,
        url: script.src,
        options: options
      };

      load(script.src, function(content) {
        result[i].loaded = true;
        result[i].content = content;
        check();
      }, function() {
        result[i].error = true;
        check();
      });
    } else {
      result[i] = {
        async: async,
        error: false,
        executed: false,
        content: script.innerHTML,
        loaded: true,
        url: null,
        options: options
      };
    }
  });

  check();
 }

 /**
 * Find and run all script tags with type="text/jsx".
 *
 * @internal
 */
 function runScripts() {
  var scripts = document.getElementsByTagName('script');

  // Array.prototype.slice cannot be used on NodeList on IE8
  var jsxScripts = [];
  for (var i = 0; i < scripts.length; i++) {
    if (/^text\/jsx(;|$)/.test(scripts.item(i).type)) {
      jsxScripts.push(scripts.item(i));
    }
  }

  if (jsxScripts.length < 1) {
    return;
  }

  console.warn(
    'You are using the in-browser JSX transformer. Be sure to precompile ' +
    'your JSX for production - ' +
    'http://facebook.github.io/react/docs/tooling-integration.html#jsx'
  );

  loadScripts(jsxScripts);
 }

 // Listen for load event if we're in a browser and then kick off finding and
 // running of scripts.
 if (typeof window !== "undefined" && window !== null) {
  headEl = document.getElementsByTagName('head')[0];
  dummyAnchor = document.createElement('a');

  if (window.addEventListener) {
    window.addEventListener('DOMContentLoaded', runScripts, false);
  } else {
    window.attachEvent('onload', runScripts);
  }
 }

 module.exports = {
  transform: transformReact,
  exec: exec
 };

 },{"./fbtransform/visitors":37,"buffer":2,"jstransform":21,"jstransform/visitors/type-syntax":33}],2:[function(_dereq_,module,exports){
 /*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <[email protected]> <http://feross.org>
 * @license  MIT
 */

 var base64 = _dereq_('base64-js')
 var ieee754 = _dereq_('ieee754')
 var isArray = _dereq_('is-array')

 exports.Buffer = Buffer
 exports.SlowBuffer = Buffer
 exports.INSPECT_MAX_BYTES = 50
 Buffer.poolSize = 8192 // not used by this implementation

 var kMaxLength = 0x3fffffff

 /**
 * If `Buffer.TYPED_ARRAY_SUPPORT`:
 *   === true    Use Uint8Array implementation (fastest)
 *   === false   Use Object implementation (most compatible, even IE6)
 *
 * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
 * Opera 11.6+, iOS 4.2+.
 *
 * Note:
 *
 * - Implementation must support adding new properties to `Uint8Array` instances.
 *   Firefox 4-29 lacked support, fixed in Firefox 30+.
 *   See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
 *
 *  - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
 *
 *  - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
 *    incorrect length in some situations.
 *
 * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they will
 * get the Object implementation, which is slower but will work correctly.
 */
 Buffer.TYPED_ARRAY_SUPPORT = (function () {
  try {
    var buf = new ArrayBuffer(0)
    var arr = new Uint8Array(buf)
    arr.foo = function () { return 42 }
    return 42 === arr.foo() && // typed array instances can be augmented
        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
        new Uint8Array(1).subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
  } catch (e) {
    return false
  }
 })()

 /**
 * Class: Buffer
 * =============
 *
 * The Buffer constructor returns instances of `Uint8Array` that are augmented
 * with function properties for all the node `Buffer` API functions. We use
 * `Uint8Array` so that square bracket notation works as expected -- it returns
 * a single octet.
 *
 * By augmenting the instances, we can avoid modifying the `Uint8Array`
 * prototype.
 */
 function Buffer (subject, encoding, noZero) {
  if (!(this instanceof Buffer))
    return new Buffer(subject, encoding, noZero)

  var type = typeof subject

  // Find the length
  var length
  if (type === 'number')
    length = subject > 0 ? subject >>> 0 : 0
  else if (type === 'string') {
    if (encoding === 'base64')
      subject = base64clean(subject)
    length = Buffer.byteLength(subject, encoding)
  } else if (type === 'object' && subject !== null) { // assume object is array-like
    if (subject.type === 'Buffer' && isArray(subject.data))
      subject = subject.data
    length = +subject.length > 0 ? Math.floor(+subject.length) : 0
  } else
    throw new TypeError('must start with number, buffer, array or string')

  if (this.length > kMaxLength)
    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
      'size: 0x' + kMaxLength.toString(16) + ' bytes')

  var buf
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    // Preferred: Return an augmented `Uint8Array` instance for best performance
    buf = Buffer._augment(new Uint8Array(length))
  } else {
    // Fallback: Return THIS instance of Buffer (created by `new`)
    buf = this
    buf.length = length
    buf._isBuffer = true
  }

  var i
  if (Buffer.TYPED_ARRAY_SUPPORT && typeof subject.byteLength === 'number') {
    // Speed optimization -- use set if we're copying from a typed array
    buf._set(subject)
  } else if (isArrayish(subject)) {
    // Treat array-ish objects as a byte array
    if (Buffer.isBuffer(subject)) {
      for (i = 0; i < length; i++)
        buf[i] = subject.readUInt8(i)
    } else {
      for (i = 0; i < length; i++)
        buf[i] = ((subject[i] % 256) + 256) % 256
    }
  } else if (type === 'string') {
    buf.write(subject, 0, encoding)
  } else if (type === 'number' && !Buffer.TYPED_ARRAY_SUPPORT && !noZero) {
    for (i = 0; i < length; i++) {
      buf[i] = 0
    }
  }

  return buf
 }

 Buffer.isBuffer = function (b) {
  return !!(b != null && b._isBuffer)
 }

 Buffer.compare = function (a, b) {
  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b))
    throw new TypeError('Arguments must be Buffers')

  var x = a.length
  var y = b.length
  for (var i = 0, len = Math.min(x, y); i < len && a[i] === b[i]; i++) {}
  if (i !== len) {
    x = a[i]
    y = b[i]
  }
  if (x < y) return -1
  if (y < x) return 1
  return 0
 }

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

 Buffer.concat = function (list, totalLength) {
  if (!isArray(list)) throw new TypeError('Usage: Buffer.concat(list[, length])')

  if (list.length === 0) {
    return new Buffer(0)
  } else if (list.length === 1) {
    return list[0]
  }

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

  var buf = new Buffer(totalLength)
  var pos = 0
  for (i = 0; i < list.length; i++) {
    var item = list[i]
    item.copy(buf, pos)
    pos += item.length
  }
  return buf
 }

 Buffer.byteLength = function (str, encoding) {
  var ret
  str = str + ''
  switch (encoding || 'utf8') {
    case 'ascii':
    case 'binary':
    case 'raw':
      ret = str.length
      break
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      ret = str.length * 2
      break
    case 'hex':
      ret = str.length >>> 1
      break
    case 'utf8':
    case 'utf-8':
      ret = utf8ToBytes(str).length
      break
    case 'base64':
      ret = base64ToBytes(str).length
      break
    default:
      ret = str.length
  }
  return ret
 }

 // pre-set for values that may exist in the future
 Buffer.prototype.length = undefined
 Buffer.prototype.parent = undefined

 // toString(encoding, start=0, end=buffer.length)
 Buffer.prototype.toString = function (encoding, start, end) {
  var loweredCase = false

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

  if (!encoding) encoding = 'utf8'
  if (start < 0) start = 0
  if (end > this.length) end = this.length
  if (end <= start) return ''

  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 'binary':
        return binarySlice(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
    }
  }
 }

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

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

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

 // `get` will be removed in Node 0.13+
 Buffer.prototype.get = function (offset) {
  console.log('.get() is deprecated. Access using array indexes instead.')
  return this.readUInt8(offset)
 }

 // `set` will be removed in Node 0.13+
 Buffer.prototype.set = function (v, offset) {
  console.log('.set() is deprecated. Access using array indexes instead.')
  return this.writeUInt8(v, offset)
 }

 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
    }
  }

  // must be an even number of digits
  var strLen = string.length
  if (strLen % 2 !== 0) throw new Error('Invalid hex string')

  if (length > strLen / 2) {
    length = strLen / 2
  }
  for (var i = 0; i < length; i++) {
    var byte = parseInt(string.substr(i * 2, 2), 16)
    if (isNaN(byte)) throw new Error('Invalid hex string')
    buf[offset + i] = byte
  }
  return i
 }

 function utf8Write (buf, string, offset, length) {
  var charsWritten = blitBuffer(utf8ToBytes(string), buf, offset, length)
  return charsWritten
 }

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

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

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

 function utf16leWrite (buf, string, offset, length) {
  var charsWritten = blitBuffer(utf16leToBytes(string), buf, offset, length)
  return charsWritten
 }

 Buffer.prototype.write = function (string, offset, length, encoding) {
  // Support both (string, offset, length, encoding)
  // and the legacy (string, encoding, offset, length)
  if (isFinite(offset)) {
    if (!isFinite(length)) {
      encoding = length
      length = undefined
    }
  } else {  // legacy
    var swap = encoding
    encoding = offset
    offset = length
    length = swap
  }

  offset = Number(offset) || 0
  var remaining = this.length - offset
  if (!length) {
    length = remaining
  } else {
    length = Number(length)
    if (length > remaining) {
      length = remaining
    }
  }
  encoding = String(encoding || 'utf8').toLowerCase()

  var ret
  switch (encoding) {
    case 'hex':
      ret = hexWrite(this, string, offset, length)
      break
    case 'utf8':
    case 'utf-8':
      ret = utf8Write(this, string, offset, length)
      break
    case 'ascii':
      ret = asciiWrite(this, string, offset, length)
      break
    case 'binary':
      ret = binaryWrite(this, string, offset, length)
      break
    case 'base64':
      ret = base64Write(this, string, offset, length)
      break
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      ret = utf16leWrite(this, string, offset, length)
      break
    default:
      throw new TypeError('Unknown encoding: ' + encoding)
  }
  return ret
 }

 Buffer.prototype.toJSON = function () {
  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) {
  var res = ''
  var tmp = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; i++) {
    if (buf[i] <= 0x7F) {
      res += decodeUtf8Char(tmp) + String.fromCharCode(buf[i])
      tmp = ''
    } else {
      tmp += '%' + buf[i].toString(16)
    }
  }

  return res + decodeUtf8Char(tmp)
 }

 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])
  }
  return ret
 }

 function binarySlice (buf, start, end) {
  return asciiSlice(buf, start, end)
 }

 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 (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

  if (Buffer.TYPED_ARRAY_SUPPORT) {
    return Buffer._augment(this.subarray(start, end))
  } else {
    var sliceLen = end - start
    var newBuf = new Buffer(sliceLen, undefined, true)
    for (var i = 0; i < sliceLen; i++) {
      newBuf[i] = this[i + start]
    }
    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.readUInt8 = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 1, this.length)
  return this[offset]
 }

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

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

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

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

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

 Buffer.prototype.readInt16LE = function (offset, noAssert) {
  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 (offset, noAssert) {
  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 (offset, noAssert) {
  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 (offset, noAssert) {
  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 (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, true, 23, 4)
 }

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

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

 Buffer.prototype.readDoubleBE = function (offset, noAssert) {
  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 must be a Buffer instance')
  if (value > max || value < min) throw new TypeError('value is out of bounds')
  if (offset + ext > buf.length) throw new TypeError('index out of range')
 }

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

 function objectWriteUInt16 (buf, value, offset, littleEndian) {
  if (value < 0) value = 0xffff + value + 1
  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; i++) {
    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
      (littleEndian ? i : 1 - i) * 8
  }
 }

 Buffer.prototype.writeUInt16LE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 2, 0xffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = value
    this[offset + 1] = (value >>> 8)
  } else objectWriteUInt16(this, value, offset, true)
  return offset + 2
 }

 Buffer.prototype.writeUInt16BE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 2, 0xffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 8)
    this[offset + 1] = value
  } else objectWriteUInt16(this, value, offset, false)
  return offset + 2
 }

 function objectWriteUInt32 (buf, value, offset, littleEndian) {
  if (value < 0) value = 0xffffffff + value + 1
  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; i++) {
    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
  }
 }

 Buffer.prototype.writeUInt32LE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 4, 0xffffffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset + 3] = (value >>> 24)
    this[offset + 2] = (value >>> 16)
    this[offset + 1] = (value >>> 8)
    this[offset] = value
  } else objectWriteUInt32(this, value, offset, true)
  return offset + 4
 }

 Buffer.prototype.writeUInt32BE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 4, 0xffffffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 24)
    this[offset + 1] = (value >>> 16)
    this[offset + 2] = (value >>> 8)
    this[offset + 3] = value
  } else objectWriteUInt32(this, value, offset, false)
  return offset + 4
 }

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

 Buffer.prototype.writeInt16LE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = value
    this[offset + 1] = (value >>> 8)
  } else objectWriteUInt16(this, value, offset, true)
  return offset + 2
 }

 Buffer.prototype.writeInt16BE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 8)
    this[offset + 1] = value
  } else objectWriteUInt16(this, value, offset, false)
  return offset + 2
 }

 Buffer.prototype.writeInt32LE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = value
    this[offset + 1] = (value >>> 8)
    this[offset + 2] = (value >>> 16)
    this[offset + 3] = (value >>> 24)
  } else objectWriteUInt32(this, value, offset, true)
  return offset + 4
 }

 Buffer.prototype.writeInt32BE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (value < 0) value = 0xffffffff + value + 1
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 24)
    this[offset + 1] = (value >>> 16)
    this[offset + 2] = (value >>> 8)
    this[offset + 3] = value
  } else objectWriteUInt32(this, value, offset, false)
  return offset + 4
 }

 function checkIEEE754 (buf, value, offset, ext, max, min) {
  if (value > max || value < min) throw new TypeError('value is out of bounds')
  if (offset + ext > buf.length) throw new TypeError('index out of range')
 }

 function writeFloat (buf, value, offset, littleEndian, noAssert) {
  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 (value, offset, noAssert) {
  return writeFloat(this, value, offset, true, noAssert)
 }

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

 function writeDouble (buf, value, offset, littleEndian, noAssert) {
  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 (value, offset, noAssert) {
  return writeDouble(this, value, offset, true, noAssert)
 }

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

 // copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
 Buffer.prototype.copy = function (target, target_start, start, end) {
  var source = this

  if (!start) start = 0
  if (!end && end !== 0) end = this.length
  if (!target_start) target_start = 0

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

  // Fatal error conditions
  if (end < start) throw new TypeError('sourceEnd < sourceStart')
  if (target_start < 0 || target_start >= target.length)
    throw new TypeError('targetStart out of bounds')
  if (start < 0 || start >= source.length) throw new TypeError('sourceStart out of bounds')
  if (end < 0 || end > source.length) throw new TypeError('sourceEnd out of bounds')

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

  var len = end - start

  if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
    for (var i = 0; i < len; i++) {
      target[i + target_start] = this[i + start]
    }
  } else {
    target._set(this.subarray(start, start + len), target_start)
  }
 }

 // fill(value, start=0, end=buffer.length)
 Buffer.prototype.fill = function (value, start, end) {
  if (!value) value = 0
  if (!start) start = 0
  if (!end) end = this.length

  if (end < start) throw new TypeError('end < start')

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

  if (start < 0 || start >= this.length) throw new TypeError('start out of bounds')
  if (end < 0 || end > this.length) throw new TypeError('end out of bounds')

  var i
  if (typeof value === 'number') {
    for (i = start; i < end; i++) {
      this[i] = value
    }
  } else {
    var bytes = utf8ToBytes(value.toString())
    var len = bytes.length
    for (i = start; i < end; i++) {
      this[i] = bytes[i % len]
    }
  }

  return this
 }

 /**
 * Creates a new `ArrayBuffer` with the *copied* memory of the buffer instance.
 * Added in Node 0.12. Only available in browsers that support ArrayBuffer.
 */
 Buffer.prototype.toArrayBuffer = function () {
  if (typeof Uint8Array !== 'undefined') {
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      return (new Buffer(this)).buffer
    } else {
      var buf = new Uint8Array(this.length)
      for (var i = 0, len = buf.length; i < len; i += 1) {
        buf[i] = this[i]
      }
      return buf.buffer
    }
  } else {
    throw new TypeError('Buffer.toArrayBuffer not supported in this browser')
  }
 }

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

 var BP = Buffer.prototype

 /**
 * Augment a Uint8Array *instance* (not the Uint8Array class!) with Buffer methods
 */
 Buffer._augment = function (arr) {
  arr.constructor = Buffer
  arr._isBuffer = true

  // save reference to original Uint8Array get/set methods before overwriting
  arr._get = arr.get
  arr._set = arr.set

  // deprecated, will be removed in node 0.13+
  arr.get = BP.get
  arr.set = BP.set

  arr.write = BP.write
  arr.toString = BP.toString
  arr.toLocaleString = BP.toString
  arr.toJSON = BP.toJSON
  arr.equals = BP.equals
  arr.compare = BP.compare
  arr.copy = BP.copy
  arr.slice = BP.slice
  arr.readUInt8 = BP.readUInt8
  arr.readUInt16LE = BP.readUInt16LE
  arr.readUInt16BE = BP.readUInt16BE
  arr.readUInt32LE = BP.readUInt32LE
  arr.readUInt32BE = BP.readUInt32BE
  arr.readInt8 = BP.readInt8
  arr.readInt16LE = BP.readInt16LE
  arr.readInt16BE = BP.readInt16BE
  arr.readInt32LE = BP.readInt32LE
  arr.readInt32BE = BP.readInt32BE
  arr.readFloatLE = BP.readFloatLE
  arr.readFloatBE = BP.readFloatBE
  arr.readDoubleLE = BP.readDoubleLE
  arr.readDoubleBE = BP.readDoubleBE
  arr.writeUInt8 = BP.writeUInt8
  arr.writeUInt16LE = BP.writeUInt16LE
  arr.writeUInt16BE = BP.writeUInt16BE
  arr.writeUInt32LE = BP.writeUInt32LE
  arr.writeUInt32BE = BP.writeUInt32BE
  arr.writeInt8 = BP.writeInt8
  arr.writeInt16LE = BP.writeInt16LE
  arr.writeInt16BE = BP.writeInt16BE
  arr.writeInt32LE = BP.writeInt32LE
  arr.writeInt32BE = BP.writeInt32BE
  arr.writeFloatLE = BP.writeFloatLE
  arr.writeFloatBE = BP.writeFloatBE
  arr.writeDoubleLE = BP.writeDoubleLE
  arr.writeDoubleBE = BP.writeDoubleBE
  arr.fill = BP.fill
  arr.inspect = BP.inspect
  arr.toArrayBuffer = BP.toArrayBuffer

  return arr
 }

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

 function base64clean (str) {
  // Node strips out invalid characters like \n and \t from the string, base64-js does not
  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
  while (str.length % 4 !== 0) {
    str = str + '='
  }
  return str
 }

 function stringtrim (str) {
  if (str.trim) return str.trim()
  return str.replace(/^\s+|\s+$/g, '')
 }

 function isArrayish (subject) {
  return isArray(subject) || Buffer.isBuffer(subject) ||
      subject && typeof subject === 'object' &&
      typeof subject.length === 'number'
 }

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

 function utf8ToBytes (str) {
  var byteArray = []
  for (var i = 0; i < str.length; i++) {
    var b = str.charCodeAt(i)
    if (b <= 0x7F) {
      byteArray.push(b)
    } else {
      var start = i
      if (b >= 0xD800 && b <= 0xDFFF) i++
      var h = encodeURIComponent(str.slice(start, i+1)).substr(1).split('%')
      for (var j = 0; j < h.length; j++) {
        byteArray.push(parseInt(h[j], 16))
      }
    }
  }
  return byteArray
 }

 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) {
  var c, hi, lo
  var byteArray = []
  for (var i = 0; i < str.length; i++) {
    c = str.charCodeAt(i)
    hi = c >> 8
    lo = c % 256
    byteArray.push(lo)
    byteArray.push(hi)
  }

  return byteArray
 }

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

 function decodeUtf8Char (str) {
  try {
    return decodeURIComponent(str)
  } catch (err) {
    return String.fromCharCode(0xFFFD) // UTF 8 invalid char
  }
 }

 },{"base64-js":3,"ieee754":4,"is-array":5}],3:[function(_dereq_,module,exports){
 var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';

 ;(function (exports) {
 	'use strict';

  var Arr = (typeof Uint8Array !== 'undefined')
    ? Uint8Array
    : Array

 	var PLUS   = '+'.charCodeAt(0)
 	var SLASH  = '/'.charCodeAt(0)
 	var NUMBER = '0'.charCodeAt(0)
 	var LOWER  = 'a'.charCodeAt(0)
 	var UPPER  = 'A'.charCodeAt(0)

 	function decode (elt) {
 		var code = elt.charCodeAt(0)
 		if (code === PLUS)
 			return 62 // '+'
 		if (code === SLASH)
 			return 63 // '/'
 		if (code < NUMBER)
 			return -1 //no match
 		if (code < NUMBER + 10)
 			return code - NUMBER + 26 + 26
 		if (code < UPPER + 26)
 			return code - UPPER
 		if (code < LOWER + 26)
 			return code - LOWER + 26
 	}

 	function b64ToByteArray (b64) {
 		var i, j, l, tmp, placeHolders, arr

 		if (b64.length % 4 > 0) {
 			throw new Error('Invalid string. Length must be a multiple of 4')
 		}

 		// the number of equal signs (place holders)
 		// if there are two placeholders, than the two characters before it
 		// represent one byte
 		// if there is only one, then the three characters before it represent 2 bytes
 		// this is just a cheap hack to not do indexOf twice
 		var len = b64.length
 		placeHolders = '=' === b64.charAt(len - 2) ? 2 : '=' === b64.charAt(len - 1) ? 1 : 0

 		// base64 is 4/3 + up to two characters of the original data
 		arr = new Arr(b64.length * 3 / 4 - placeHolders)

 		// if there are placeholders, only get up to the last complete 4 chars
 		l = placeHolders > 0 ? b64.length - 4 : b64.length

 		var L = 0

 		function push (v) {
 			arr[L++] = v
 		}

 		for (i = 0, j = 0; i < l; i += 4, j += 3) {
 			tmp = (decode(b64.charAt(i)) << 18) | (decode(b64.charAt(i + 1)) << 12) | (decode(b64.charAt(i + 2)) << 6) | decode(b64.charAt(i + 3))
 			push((tmp & 0xFF0000) >> 16)
 			push((tmp & 0xFF00) >> 8)
 			push(tmp & 0xFF)
 		}

 		if (placeHolders === 2) {
 			tmp = (decode(b64.charAt(i)) << 2) | (decode(b64.charAt(i + 1)) >> 4)
 			push(tmp & 0xFF)
 		} else if (placeHolders === 1) {
 			tmp = (decode(b64.charAt(i)) << 10) | (decode(b64.charAt(i + 1)) << 4) | (decode(b64.charAt(i + 2)) >> 2)
 			push((tmp >> 8) & 0xFF)
 			push(tmp & 0xFF)
 		}

 		return arr
 	}

 	function uint8ToBase64 (uint8) {
 		var i,
 			extraBytes = uint8.length % 3, // if we have 1 byte left, pad 2 bytes
 			output = "",
 			temp, length

 		function encode (num) {
 			return lookup.charAt(num)
 		}

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

 		// go through the array every three bytes, we'll deal with trailing stuff later
 		for (i = 0, length = uint8.length - extraBytes; i < length; i += 3) {
 			temp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
 			output += tripletToBase64(temp)
 		}

 		// pad the end with zeros, but make sure to not forget the extra bytes
 		switch (extraBytes) {
 			case 1:
 				temp = uint8[uint8.length - 1]
 				output += encode(temp >> 2)
 				output += encode((temp << 4) & 0x3F)
 				output += '=='
 				break
 			case 2:
 				temp = (uint8[uint8.length - 2] << 8) + (uint8[uint8.length - 1])
 				output += encode(temp >> 10)
 				output += encode((temp >> 4) & 0x3F)
 				output += encode((temp << 2) & 0x3F)
 				output += '='
 				break
 		}

 		return output
 	}

 	exports.toByteArray = b64ToByteArray
 	exports.fromByteArray = uint8ToBase64
 }(typeof exports === 'undefined' ? (this.base64js = {}) : exports))

 },{}],4:[function(_dereq_,module,exports){
 exports.read = function(buffer, offset, isLE, mLen, nBytes) {
  var e, m,
      eLen = nBytes * 8 - mLen - 1,
      eMax = (1 << eLen) - 1,
      eBias = eMax >> 1,
      nBits = -7,
      i = isLE ? (nBytes - 1) : 0,
      d = isLE ? -1 : 1,
      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,
      eLen = nBytes * 8 - mLen - 1,
      eMax = (1 << eLen) - 1,
      eBias = eMax >> 1,
      rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0),
      i = isLE ? 0 : (nBytes - 1),
      d = isLE ? 1 : -1,
      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;
 };

 },{}],5:[function(_dereq_,module,exports){

 /**
 * isArray
 */

 var isArray = Array.isArray;

 /**
 * toString
 */

 var str = Object.prototype.toString;

 /**
 * Whether or not the given `val`
 * is an array.
 *
 * example:
 *
 *        isArray([]);
 *        // > true
 *        isArray(arguments);
 *        // > false
 *        isArray('');
 *        // > false
 *
 * @param {mixed} val
 * @return {bool}
 */

 module.exports = isArray || function (val) {
  return !! val && '[object Array]' == str.call(val);
 };

 },{}],6:[function(_dereq_,module,exports){
 (function (process){
 // Copyright Joyent, Inc. and other Node contributors.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
 // copy of this software and associated documentation files (the
 // "Software"), to deal in the Software without restriction, including
 // without limitation the rights to use, copy, modify, merge, publish,
 // distribute, sublicense, and/or sell copies of the Software, and to permit
 // persons to whom the Software is furnished to do so, subject to the
 // following conditions:
 //
 // The above copyright notice and this permission notice shall be included
 // in all copies or substantial portions of the Software.
 //
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
 // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 // USE OR OTHER DEALINGS IN THE SOFTWARE.

 // resolves . and .. elements in a path array with directory names there
 // must be no slashes, empty elements, or device names (c:\) in the array
 // (so also no leading and trailing slashes - it does not distinguish
 // relative and absolute paths)
 function normalizeArray(parts, allowAboveRoot) {
  // if the path tries to go above the root, `up` ends up > 0
  var up = 0;
  for (var i = parts.length - 1; i >= 0; i--) {
    var last = parts[i];
    if (last === '.') {
      parts.splice(i, 1);
    } else if (last === '..') {
      parts.splice(i, 1);
      up++;
    } else if (up) {
      parts.splice(i, 1);
      up--;
    }
  }

  // if the path is allowed to go above the root, restore leading ..s
  if (allowAboveRoot) {
    for (; up--; up) {
      parts.unshift('..');
    }
  }

  return parts;
 }

 // Split a filename into [root, dir, basename, ext], unix version
 // 'root' is just a slash, or nothing.
 var splitPathRe =
    /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
 var splitPath = function(filename) {
  return splitPathRe.exec(filename).slice(1);
 };

 // path.resolve([from ...], to)
 // posix version
 exports.resolve = function() {
  var resolvedPath = '',
      resolvedAbsolute = false;

  for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
    var path = (i >= 0) ? arguments[i] : process.cwd();

    // Skip empty and invalid entries
    if (typeof path !== 'string') {
      throw new TypeError('Arguments to path.resolve must be strings');
    } else if (!path) {
      continue;
    }

    resolvedPath = path + '/' + resolvedPath;
    resolvedAbsolute = path.charAt(0) === '/';
  }

  // At this point the path should be resolved to a full absolute path, but
  // handle relative paths to be safe (might happen when process.cwd() fails)

  // Normalize the path
  resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) {
    return !!p;
  }), !resolvedAbsolute).join('/');

  return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
 };

 // path.normalize(path)
 // posix version
 exports.normalize = function(path) {
  var isAbsolute = exports.isAbsolute(path),
      trailingSlash = substr(path, -1) === '/';

  // Normalize the path
  path = normalizeArray(filter(path.split('/'), function(p) {
    return !!p;
  }), !isAbsolute).join('/');

  if (!path && !isAbsolute) {
    path = '.';
  }
  if (path && trailingSlash) {
    path += '/';
  }

  return (isAbsolute ? '/' : '') + path;
 };

 // posix version
 exports.isAbsolute = function(path) {
  return path.charAt(0) === '/';
 };

 // posix version
 exports.join = function() {
  var paths = Array.prototype.slice.call(arguments, 0);
  return exports.normalize(filter(paths, function(p, index) {
    if (typeof p !== 'string') {
      throw new TypeError('Arguments to path.join must be strings');
    }
    return p;
  }).join('/'));
 };


 // path.relative(from, to)
 // posix version
 exports.relative = function(from, to) {
  from = exports.resolve(from).substr(1);
  to = exports.resolve(to).substr(1);

  function trim(arr) {
    var start = 0;
    for (; start < arr.length; start++) {
      if (arr[start] !== '') break;
    }

    var end = arr.length - 1;
    for (; end >= 0; end--) {
      if (arr[end] !== '') break;
    }

    if (start > end) return [];
    return arr.slice(start, end - start + 1);
  }

  var fromParts = trim(from.split('/'));
  var toParts = trim(to.split('/'));

  var length = Math.min(fromParts.length, toParts.length);
  var samePartsLength = length;
  for (var i = 0; i < length; i++) {
    if (fromParts[i] !== toParts[i]) {
      samePartsLength = i;
      break;
    }
  }

  var outputParts = [];
  for (var i = samePartsLength; i < fromParts.length; i++) {
    outputParts.push('..');
  }

  outputParts = outputParts.concat(toParts.slice(samePartsLength));

  return outputParts.join('/');
 };

 exports.sep = '/';
 exports.delimiter = ':';

 exports.dirname = function(path) {
  var result = splitPath(path),
      root = result[0],
      dir = result[1];

  if (!root && !dir) {
    // No dirname whatsoever
    return '.';
  }

  if (dir) {
    // It has a dirname, strip trailing slash
    dir = dir.substr(0, dir.length - 1);
  }

  return root + dir;
 };


 exports.basename = function(path, ext) {
  var f = splitPath(path)[2];
  // TODO: make this comparison case-insensitive on windows?
  if (ext && f.substr(-1 * ext.length) === ext) {
    f = f.substr(0, f.length - ext.length);
  }
  return f;
 };


 exports.extname = function(path) {
  return splitPath(path)[3];
 };

 function filter (xs, f) {
    if (xs.filter) return xs.filter(f);
    var res = [];
    for (var i = 0; i < xs.length; i++) {
        if (f(xs[i], i, xs)) res.push(xs[i]);
    }
    return res;
 }

 // String.prototype.substr - negative index don't work in IE8
 var substr = 'ab'.substr(-1) === 'b'
    ? function (str, start, len) { return str.substr(start, len) }
    : function (str, start, len) {
        if (start < 0) start = str.length + start;
        return str.substr(start, len);
    }
 ;

 }).call(this,_dereq_('_process'))
 },{"_process":7}],7:[function(_dereq_,module,exports){
 // shim for using process in browser

 var process = module.exports = {};

 process.nextTick = (function () {
    var canSetImmediate = typeof window !== 'undefined'
    && window.setImmediate;
    var canMutationObserver = typeof window !== 'undefined'
    && window.MutationObserver;
    var canPost = typeof window !== 'undefined'
    && window.postMessage && window.addEventListener
    ;

    if (canSetImmediate) {
        return function (f) { return window.setImmediate(f) };
    }

    var queue = [];

    if (canMutationObserver) {
        var hiddenDiv = document.createElement("div");
        var observer = new MutationObserver(function () {
            var queueList = queue.slice();
            queue.length = 0;
            queueList.forEach(function (fn) {
                fn();
            });
        });

        observer.observe(hiddenDiv, { attributes: true });

        return function nextTick(fn) {
            if (!queue.length) {
                hiddenDiv.setAttribute('yes', 'no');
            }
            queue.push(fn);
        };
    }

    if (canPost) {
        window.addEventListener('message', function (ev) {
            var source = ev.source;
            if ((source === window || source === null) && ev.data === 'process-tick') {
                ev.stopPropagation();
                if (queue.length > 0) {
                    var fn = queue.shift();
                    fn();
                }
            }
        }, true);

        return function nextTick(fn) {
            queue.push(fn);
            window.postMessage('process-tick', '*');
        };
    }

    return function nextTick(fn) {
        setTimeout(fn, 0);
    };
 })();

 process.title = 'browser';
 process.browser = true;
 process.env = {};
 process.argv = [];

 function noop() {}

 process.on = noop;
 process.addListener = noop;
 process.once = noop;
 process.off = noop;
 process.removeListener = noop;
 process.removeAllListeners = noop;
 process.emit = noop;

 process.binding = function (name) {
    throw new Error('process.binding is not supported');
 };

 // TODO(shtylman)
 process.cwd = function () { return '/' };
 process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
 };

 },{}],8:[function(_dereq_,module,exports){
 var Base62 = (function (my) {
  my.chars = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"]

  my.encode = function(i){
    if (i === 0) {return '0'}
    var s = ''
    while (i > 0) {
      s = this.chars[i % 62] + s
      i = Math.floor(i/62)
    }
    return s
  };
  my.decode = function(a,b,c,d){
    for (
      b = c = (
        a === (/\W|_|^$/.test(a += "") || a)
      ) - 1;
      d = a.charCodeAt(c++);
    )
    b = b * 62 + d - [, 48, 29, 87][d >> 5];
    return b
  };

  return my;
 }({}));

 module.exports = Base62
 },{}],9:[function(_dereq_,module,exports){
 /*
  Copyright (C) 2013 Ariya Hidayat <[email protected]>
  Copyright (C) 2013 Thaddee Tyl <[email protected]>
  Copyright (C) 2012 Ariya Hidayat <[email protected]>
  Copyright (C) 2012 Mathias Bynens <[email protected]>
  Copyright (C) 2012 Joost-Wim Boekesteijn <[email protected]>
  Copyright (C) 2012 Kris Kowal <[email protected]>
  Copyright (C) 2012 Yusuke Suzuki <[email protected]>
  Copyright (C) 2012 Arpad Borsos <[email protected]>
  Copyright (C) 2011 Ariya Hidayat <[email protected]>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

 /*jslint bitwise:true plusplus:true */
 /*global esprima:true, define:true, exports:true, window: true,
 throwError: true, generateStatement: true, peek: true,
 parseAssignmentExpression: true, parseBlock: true,
 parseClassExpression: true, parseClassDeclaration: true, parseExpression: true,
 parseDeclareClass: true, parseDeclareFunction: true,
 parseDeclareModule: true, parseDeclareVariable: true,
 parseForStatement: true,
 parseFunctionDeclaration: true, parseFunctionExpression: true,
 parseFunctionSourceElements: true, parseVariableIdentifier: true,
 parseImportSpecifier: true, parseInterface: true,
 parseLeftHandSideExpression: true, parseParams: true, validateParam: true,
 parseSpreadOrAssignmentExpression: true,
 parseStatement: true, parseSourceElement: true, parseConciseBody: true,
 advanceXJSChild: true, isXJSIdentifierStart: true, isXJSIdentifierPart: true,
 scanXJSStringLiteral: true, scanXJSIdentifier: true,
 parseXJSAttributeValue: true, parseXJSChild: true, parseXJSElement: true, parseXJSExpressionContainer: true, parseXJSEmptyExpression: true,
 parseFunctionTypeParam: true,
 parsePrimaryType: true,
 parseTypeAlias: true,
 parseType: true, parseTypeAnnotatableIdentifier: true, parseTypeAnnotation: true,
 parseYieldExpression: true, parseAwaitExpression: true
 */

 (function (root, factory) {
    'use strict';

    // Universal Module Definition (UMD) to support AMD, CommonJS/Node.js,
    // Rhino, and plain browser loading.
    if (typeof define === 'function' && define.amd) {
        define(['exports'], factory);
    } else if (typeof exports !== 'undefined') {
        factory(exports);
    } else {
        factory((root.esprima = {}));
    }
 }(this, function (exports) {
    'use strict';

    var Token,
        TokenName,
        FnExprTokens,
        Syntax,
        PropertyKind,
        Messages,
        Regex,
        SyntaxTreeDelegate,
        XHTMLEntities,
        ClassPropertyType,
        source,
        strict,
        index,
        lineNumber,
        lineStart,
        length,
        delegate,
        lookahead,
        state,
        extra;

    Token = {
        BooleanLiteral: 1,
        EOF: 2,
        Identifier: 3,
        Keyword: 4,
        NullLiteral: 5,
        NumericLiteral: 6,
        Punctuator: 7,
        StringLiteral: 8,
        RegularExpression: 9,
        Template: 10,
        XJSIdentifier: 11,
        XJSText: 12
    };

    TokenName = {};
    TokenName[Token.BooleanLiteral] = 'Boolean';
    TokenName[Token.EOF] = '<end>';
    TokenName[Token.Identifier] = 'Identifier';
    TokenName[Token.Keyword] = 'Keyword';
    TokenName[Token.NullLiteral] = 'Null';
    TokenName[Token.NumericLiteral] = 'Numeric';
    TokenName[Token.Punctuator] = 'Punctuator';
    TokenName[Token.StringLiteral] = 'String';
    TokenName[Token.XJSIdentifier] = 'XJSIdentifier';
    TokenName[Token.XJSText] = 'XJSText';
    TokenName[Token.RegularExpression] = 'RegularExpression';

    // A function following one of those tokens is an expression.
    FnExprTokens = ['(', '{', '[', 'in', 'typeof', 'instanceof', 'new',
                    'return', 'case', 'delete', 'throw', 'void',
                    // assignment operators
                    '=', '+=', '-=', '*=', '/=', '%=', '<<=', '>>=', '>>>=',
                    '&=', '|=', '^=', ',',
                    // binary/unary operators
                    '+', '-', '*', '/', '%', '++', '--', '<<', '>>', '>>>', '&',
                    '|', '^', '!', '~', '&&', '||', '?', ':', '===', '==', '>=',
                    '<=', '<', '>', '!=', '!=='];

    Syntax = {
        AnyTypeAnnotation: 'AnyTypeAnnotation',
        ArrayExpression: 'ArrayExpression',
        ArrayPattern: 'ArrayPattern',
        ArrayTypeAnnotation: 'ArrayTypeAnnotation',
        ArrowFunctionExpression: 'ArrowFunctionExpression',
        AssignmentExpression: 'AssignmentExpression',
        BinaryExpression: 'BinaryExpression',
        BlockStatement: 'BlockStatement',
        BooleanTypeAnnotation: 'BooleanTypeAnnotation',
        BreakStatement: 'BreakStatement',
        CallExpression: 'CallExpression',
        CatchClause: 'CatchClause',
        ClassBody: 'ClassBody',
        ClassDeclaration: 'ClassDeclaration',
        ClassExpression: 'ClassExpression',
        ClassImplements: 'ClassImplements',
        ClassProperty: 'ClassProperty',
        ComprehensionBlock: 'ComprehensionBlock',
        ComprehensionExpression: 'ComprehensionExpression',
        ConditionalExpression: 'ConditionalExpression',
        ContinueStatement: 'ContinueStatement',
        DebuggerStatement: 'DebuggerStatement',
        DeclareClass: 'DeclareClass',
        DeclareFunction: 'DeclareFunction',
        DeclareModule: 'DeclareModule',
        DeclareVariable: 'DeclareVariable',
        DoWhileStatement: 'DoWhileStatement',
        EmptyStatement: 'EmptyStatement',
        ExportDeclaration: 'ExportDeclaration',
        ExportBatchSpecifier: 'ExportBatchSpecifier',
        ExportSpecifier: 'ExportSpecifier',
        ExpressionStatement: 'ExpressionStatement',
        ForInStatement: 'ForInStatement',
        ForOfStatement: 'ForOfStatement',
        ForStatement: 'ForStatement',
        FunctionDeclaration: 'FunctionDeclaration',
        FunctionExpression: 'FunctionExpression',
        FunctionTypeAnnotation: 'FunctionTypeAnnotation',
        FunctionTypeParam: 'FunctionTypeParam',
        GenericTypeAnnotation: 'GenericTypeAnnotation',
        Identifier: 'Identifier',
        IfStatement: 'IfStatement',
        ImportDeclaration: 'ImportDeclaration',
        ImportDefaultSpecifier: 'ImportDefaultSpecifier',
        ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',
        ImportSpecifier: 'ImportSpecifier',
        InterfaceDeclaration: 'InterfaceDeclaration',
        InterfaceExtends: 'InterfaceExtends',
        IntersectionTypeAnnotation: 'IntersectionTypeAnnotation',
        LabeledStatement: 'LabeledStatement',
        Literal: 'Literal',
        LogicalExpression: 'LogicalExpression',
        MemberExpression: 'MemberExpression',
        MethodDefinition: 'MethodDefinition',
        ModuleSpecifier: 'ModuleSpecifier',
        NewExpression: 'NewExpression',
        NullableTypeAnnotation: 'NullableTypeAnnotation',
        NumberTypeAnnotation: 'NumberTypeAnnotation',
        ObjectExpression: 'ObjectExpression',
        ObjectPattern: 'ObjectPattern',
        ObjectTypeAnnotation: 'ObjectTypeAnnotation',
        ObjectTypeCallProperty: 'ObjectTypeCallProperty',
        ObjectTypeIndexer: 'ObjectTypeIndexer',
        ObjectTypeProperty: 'ObjectTypeProperty',
        Program: 'Program',
        Property: 'Property',
        QualifiedTypeIdentifier: 'QualifiedTypeIdentifier',
        ReturnStatement: 'ReturnStatement',
        SequenceExpression: 'SequenceExpression',
        SpreadElement: 'SpreadElement',
        SpreadProperty: 'SpreadProperty',
        StringLiteralTypeAnnotation: 'StringLiteralTypeAnnotation',
        StringTypeAnnotation: 'StringTypeAnnotation',
        SwitchCase: 'SwitchCase',
        SwitchStatement: 'SwitchStatement',
        TaggedTemplateExpression: 'TaggedTemplateExpression',
        TemplateElement: 'TemplateElement',
        TemplateLiteral: 'TemplateLiteral',
        ThisExpression: 'ThisExpression',
        ThrowStatement: 'ThrowStatement',
        TupleTypeAnnotation: 'TupleTypeAnnotation',
        TryStatement: 'TryStatement',
        TypeAlias: 'TypeAlias',
        TypeAnnotation: 'TypeAnnotation',
        TypeofTypeAnnotation: 'TypeofTypeAnnotation',
        TypeParameterDeclaration: 'TypeParameterDeclaration',
        TypeParameterInstantiation: 'TypeParameterInstantiation',
        UnaryExpression: 'UnaryExpression',
        UnionTypeAnnotation: 'UnionTypeAnnotation',
        UpdateExpression: 'UpdateExpression',
        VariableDeclaration: 'VariableDeclaration',
        VariableDeclarator: 'VariableDeclarator',
        VoidTypeAnnotation: 'VoidTypeAnnotation',
        WhileStatement: 'WhileStatement',
        WithStatement: 'WithStatement',
        XJSIdentifier: 'XJSIdentifier',
        XJSNamespacedName: 'XJSNamespacedName',
        XJSMemberExpression: 'XJSMemberExpression',
        XJSEmptyExpression: 'XJSEmptyExpression',
        XJSExpressionContainer: 'XJSExpressionContainer',
        XJSElement: 'XJSElement',
        XJSClosingElement: 'XJSClosingElement',
        XJSOpeningElement: 'XJSOpeningElement',
        XJSAttribute: 'XJSAttribute',
        XJSSpreadAttribute: 'XJSSpreadAttribute',
        XJSText: 'XJSText',
        YieldExpression: 'YieldExpression',
        AwaitExpression: 'AwaitExpression'
    };

    PropertyKind = {
        Data: 1,
        Get: 2,
        Set: 4
    };

    ClassPropertyType = {
        'static': 'static',
        prototype: 'prototype'
    };

    // Error messages should be identical to V8.
    Messages = {
        UnexpectedToken:  'Unexpected token %0',
        UnexpectedNumber:  'Unexpected number',
        UnexpectedString:  'Unexpected string',
        UnexpectedIdentifier:  'Unexpected identifier',
        UnexpectedReserved:  'Unexpected reserved word',
        UnexpectedTemplate:  'Unexpected quasi %0',
        UnexpectedEOS:  'Unexpected end of input',
        NewlineAfterThrow:  'Illegal newline after throw',
        InvalidRegExp: 'Invalid regular expression',
        UnterminatedRegExp:  'Invalid regular expression: missing /',
        InvalidLHSInAssignment:  'Invalid left-hand side in assignment',
        InvalidLHSInFormalsList:  'Invalid left-hand side in formals list',
        InvalidLHSInForIn:  'Invalid left-hand side in for-in',
        MultipleDefaultsInSwitch: 'More than one default clause in switch statement',
        NoCatchOrFinally:  'Missing catch or finally after try',
        UnknownLabel: 'Undefined label \'%0\'',
        Redeclaration: '%0 \'%1\' has already been declared',
        IllegalContinue: 'Illegal continue statement',
        IllegalBreak: 'Illegal break statement',
        IllegalDuplicateClassProperty: 'Illegal duplicate property in class definition',
        IllegalReturn: 'Illegal return statement',
        IllegalSpread: 'Illegal spread element',
        StrictModeWith:  'Strict mode code may not include a with statement',
        StrictCatchVariable:  'Catch variable may not be eval or arguments in strict mode',
        StrictVarName:  'Variable name may not be eval or arguments in strict mode',
        StrictParamName:  'Parameter name eval or arguments is not allowed in strict mode',
        StrictParamDupe: 'Strict mode function may not have duplicate parameter names',
        ParameterAfterRestParameter: 'Rest parameter must be final parameter of an argument list',
        DefaultRestParameter: 'Rest parameter can not have a default value',
        ElementAfterSpreadElement: 'Spread must be the final element of an element list',
        PropertyAfterSpreadProperty: 'A rest property must be the final property of an object literal',
        ObjectPatternAsRestParameter: 'Invalid rest parameter',
        ObjectPatternAsSpread: 'Invalid spread argument',
        StrictFunctionName:  'Function name may not be eval or arguments in strict mode',
        StrictOctalLiteral:  'Octal literals are not allowed in strict mode.',
        StrictDelete:  'Delete of an unqualified identifier in strict mode.',
        StrictDuplicateProperty:  'Duplicate data property in object literal not allowed in strict mode',
        AccessorDataProperty:  'Object literal may not have data and accessor property with the same name',
        AccessorGetSet:  'Object literal may not have multiple get/set accessors with the same name',
        StrictLHSAssignment:  'Assignment to eval or arguments is not allowed in strict mode',
        StrictLHSPostfix:  'Postfix increment/decrement may not have eval or arguments operand in strict mode',
        StrictLHSPrefix:  'Prefix increment/decrement may not have eval or arguments operand in strict mode',
        StrictReservedWord:  'Use of future reserved word in strict mode',
        MissingFromClause: 'Missing from clause',
        NoAsAfterImportNamespace: 'Missing as after import *',
        InvalidModuleSpecifier: 'Invalid module specifier',
        NoUnintializedConst: 'Const must be initialized',
        ComprehensionRequiresBlock: 'Comprehension must have at least one block',
        ComprehensionError:  'Comprehension Error',
        EachNotAllowed:  'Each is not supported',
        InvalidXJSAttributeValue: 'XJS value should be either an expression or a quoted XJS text',
        ExpectedXJSClosingTag: 'Expected corresponding XJS closing tag for %0',
        AdjacentXJSElements: 'Adjacent XJS elements must be wrapped in an enclosing tag',
        ConfusedAboutFunctionType: 'Unexpected token =>. It looks like ' +
            'you are trying to write a function type, but you ended up ' +
            'writing a grouped type followed by an =>, which is a syntax ' +
            'error. Remember, function type parameters are named so function ' +
            'types look like (name1: type1, name2: type2) => returnType. You ' +
            'probably wrote (type1) => returnType'
    };

    // See also tools/generate-unicode-regex.py.
    Regex = {
        NonAsciiIdentifierStart: new RegExp('[\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]'),
        NonAsciiIdentifierPart: new RegExp('[\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0300-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u0483-\u0487\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u05d0-\u05ea\u05f0-\u05f2\u0610-\u061a\u0620-\u0669\u066e-\u06d3\u06d5-\u06dc\u06df-\u06e8\u06ea-\u06fc\u06ff\u0710-\u074a\u074d-\u07b1\u07c0-\u07f5\u07fa\u0800-\u082d\u0840-\u085b\u08a0\u08a2-\u08ac\u08e4-\u08fe\u0900-\u0963\u0966-\u096f\u0971-\u0977\u0979-\u097f\u0981-\u0983\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bc-\u09c4\u09c7\u09c8\u09cb-\u09ce\u09d7\u09dc\u09dd\u09df-\u09e3\u09e6-\u09f1\u0a01-\u0a03\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a59-\u0a5c\u0a5e\u0a66-\u0a75\u0a81-\u0a83\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abc-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ad0\u0ae0-\u0ae3\u0ae6-\u0aef\u0b01-\u0b03\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3c-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b5c\u0b5d\u0b5f-\u0b63\u0b66-\u0b6f\u0b71\u0b82\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd0\u0bd7\u0be6-\u0bef\u0c01-\u0c03\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c58\u0c59\u0c60-\u0c63\u0c66-\u0c6f\u0c82\u0c83\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbc-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0cde\u0ce0-\u0ce3\u0ce6-\u0cef\u0cf1\u0cf2\u0d02\u0d03\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d-\u0d44\u0d46-\u0d48\u0d4a-\u0d4e\u0d57\u0d60-\u0d63\u0d66-\u0d6f\u0d7a-\u0d7f\u0d82\u0d83\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0df2\u0df3\u0e01-\u0e3a\u0e40-\u0e4e\u0e50-\u0e59\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb9\u0ebb-\u0ebd\u0ec0-\u0ec4\u0ec6\u0ec8-\u0ecd\u0ed0-\u0ed9\u0edc-\u0edf\u0f00\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f3e-\u0f47\u0f49-\u0f6c\u0f71-\u0f84\u0f86-\u0f97\u0f99-\u0fbc\u0fc6\u1000-\u1049\u1050-\u109d\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u135d-\u135f\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1714\u1720-\u1734\u1740-\u1753\u1760-\u176c\u176e-\u1770\u1772\u1773\u1780-\u17d3\u17d7\u17dc\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u1820-\u1877\u1880-\u18aa\u18b0-\u18f5\u1900-\u191c\u1920-\u192b\u1930-\u193b\u1946-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u19d0-\u19d9\u1a00-\u1a1b\u1a20-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1aa7\u1b00-\u1b4b\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1bf3\u1c00-\u1c37\u1c40-\u1c49\u1c4d-\u1c7d\u1cd0-\u1cd2\u1cd4-\u1cf6\u1d00-\u1de6\u1dfc-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u200c\u200d\u203f\u2040\u2054\u2071\u207f\u2090-\u209c\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d7f-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2de0-\u2dff\u2e2f\u3005-\u3007\u3021-\u302f\u3031-\u3035\u3038-\u303c\u3041-\u3096\u3099\u309a\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua62b\ua640-\ua66f\ua674-\ua67d\ua67f-\ua697\ua69f-\ua6f1\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua827\ua840-\ua873\ua880-\ua8c4\ua8d0-\ua8d9\ua8e0-\ua8f7\ua8fb\ua900-\ua92d\ua930-\ua953\ua960-\ua97c\ua980-\ua9c0\ua9cf-\ua9d9\uaa00-\uaa36\uaa40-\uaa4d\uaa50-\uaa59\uaa60-\uaa76\uaa7a\uaa7b\uaa80-\uaac2\uaadb-\uaadd\uaae0-\uaaef\uaaf2-\uaaf6\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabea\uabec\uabed\uabf0-\uabf9\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe00-\ufe0f\ufe20-\ufe26\ufe33\ufe34\ufe4d-\ufe4f\ufe70-\ufe74\ufe76-\ufefc\uff10-\uff19\uff21-\uff3a\uff3f\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]'),
        LeadingZeros: new RegExp('^0+(?!$)')
    };

    // Ensure the condition is true, otherwise throw an error.
    // This is only to have a better contract semantic, i.e. another safety net
    // to catch a logic error. The condition shall be fulfilled in normal case.
    // Do NOT use this to enforce a certain condition on any user input.

    function assert(condition, message) {
        if (!condition) {
            throw new Error('ASSERT: ' + message);
        }
    }

    function isDecimalDigit(ch) {
        return (ch >= 48 && ch <= 57);   // 0..9
    }

    function isHexDigit(ch) {
        return '0123456789abcdefABCDEF'.indexOf(ch) >= 0;
    }

    function isOctalDigit(ch) {
        return '01234567'.indexOf(ch) >= 0;
    }


    // 7.2 White Space

    function isWhiteSpace(ch) {
        return (ch === 32) ||  // space
            (ch === 9) ||      // tab
            (ch === 0xB) ||
            (ch === 0xC) ||
            (ch === 0xA0) ||
            (ch >= 0x1680 && '\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\uFEFF'.indexOf(String.fromCharCode(ch)) > 0);
    }

    // 7.3 Line Terminators

    function isLineTerminator(ch) {
        return (ch === 10) || (ch === 13) || (ch === 0x2028) || (ch === 0x2029);
    }

    // 7.6 Identifier Names and Identifiers

    function isIdentifierStart(ch) {
        return (ch === 36) || (ch === 95) ||  // $ (dollar) and _ (underscore)
            (ch >= 65 && ch <= 90) ||         // A..Z
            (ch >= 97 && ch <= 122) ||        // a..z
            (ch === 92) ||                    // \ (backslash)
            ((ch >= 0x80) && Regex.NonAsciiIdentifierStart.test(String.fromCharCode(ch)));
    }

    function isIdentifierPart(ch) {
        return (ch === 36) || (ch === 95) ||  // $ (dollar) and _ (underscore)
            (ch >= 65 && ch <= 90) ||         // A..Z
            (ch >= 97 && ch <= 122) ||        // a..z
            (ch >= 48 && ch <= 57) ||         // 0..9
            (ch === 92) ||                    // \ (backslash)
            ((ch >= 0x80) && Regex.NonAsciiIdentifierPart.test(String.fromCharCode(ch)));
    }

    // 7.6.1.2 Future Reserved Words

    function isFutureReservedWord(id) {
        switch (id) {
        case 'class':
        case 'enum':
        case 'export':
        case 'extends':
        case 'import':
        case 'super':
            return true;
        default:
            return false;
        }
    }

    function isStrictModeReservedWord(id) {
        switch (id) {
        case 'implements':
        case 'interface':
        case 'package':
        case 'private':
        case 'protected':
        case 'public':
        case 'static':
        case 'yield':
        case 'let':
            return true;
        default:
            return false;
        }
    }

    function isRestrictedWord(id) {
        return id === 'eval' || id === 'arguments';
    }

    // 7.6.1.1 Keywords

    function isKeyword(id) {
        if (strict && isStrictModeReservedWord(id)) {
            return true;
        }

        // 'const' is specialized as Keyword in V8.
        // 'yield' is only treated as a keyword in strict mode.
        // 'let' is for compatiblity with SpiderMonkey and ES.next.
        // Some others are from future reserved words.

        switch (id.length) {
        case 2:
            return (id === 'if') || (id === 'in') || (id === 'do');
        case 3:
            return (id === 'var') || (id === 'for') || (id === 'new') ||
                (id === 'try') || (id === 'let');
        case 4:
            return (id === 'this') || (id === 'else') || (id === 'case') ||
                (id === 'void') || (id === 'with') || (id === 'enum');
        case 5:
            return (id === 'while') || (id === 'break') || (id === 'catch') ||
                (id === 'throw') || (id === 'const') ||
                (id === 'class') || (id === 'super');
        case 6:
            return (id === 'return') || (id === 'typeof') || (id === 'delete') ||
                (id === 'switch') || (id === 'export') || (id === 'import');
        case 7:
            return (id === 'default') || (id === 'finally') || (id === 'extends');
        case 8:
            return (id === 'function') || (id === 'continue') || (id === 'debugger');
        case 10:
            return (id === 'instanceof');
        default:
            return false;
        }
    }

    // 7.4 Comments

    function skipComment() {
        var ch, blockComment, lineComment;

        blockComment = false;
        lineComment = false;

        while (index < length) {
            ch = source.charCodeAt(index);

            if (lineComment) {
                ++index;
                if (isLineTerminator(ch)) {
                    lineComment = false;
                    if (ch === 13 && source.charCodeAt(index) === 10) {
                        ++index;
                    }
                    ++lineNumber;
                    lineStart = index;
                }
            } else if (blockComment) {
                if (isLineTerminator(ch)) {
                    if (ch === 13) {
                        ++index;
                    }
                    if (ch !== 13 || source.charCodeAt(index) === 10) {
                        ++lineNumber;
                        ++index;
                        lineStart = index;
                        if (index >= length) {
                            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                        }
                    }
                } else {
                    ch = source.charCodeAt(index++);
                    if (index >= length) {
                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                    }
                    // Block comment ends with '*/' (char #42, char #47).
                    if (ch === 42) {
                        ch = source.charCodeAt(index);
                        if (ch === 47) {
                            ++index;
                            blockComment = false;
                        }
                    }
                }
            } else if (ch === 47) {
                ch = source.charCodeAt(index + 1);
                // Line comment starts with '//' (char #47, char #47).
                if (ch === 47) {
                    index += 2;
                    lineComment = true;
                } else if (ch === 42) {
                    // Block comment starts with '/*' (char #47, char #42).
                    index += 2;
                    blockComment = true;
                    if (index >= length) {
                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                    }
                } else {
                    break;
                }
            } else if (isWhiteSpace(ch)) {
                ++index;
            } else if (isLineTerminator(ch)) {
                ++index;
                if (ch === 13 && source.charCodeAt(index) === 10) {
                    ++index;
                }
                ++lineNumber;
                lineStart = index;
            } else {
                break;
            }
        }
    }

    function scanHexEscape(prefix) {
        var i, len, ch, code = 0;

        len = (prefix === 'u') ? 4 : 2;
        for (i = 0; i < len; ++i) {
            if (index < length && isHexDigit(source[index])) {
                ch = source[index++];
                code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
            } else {
                return '';
            }
        }
        return String.fromCharCode(code);
    }

    function scanUnicodeCodePointEscape() {
        var ch, code, cu1, cu2;

        ch = source[index];
        code = 0;

        // At least, one hex digit is required.
        if (ch === '}') {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        while (index < length) {
            ch = source[index++];
            if (!isHexDigit(ch)) {
                break;
            }
            code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
        }

        if (code > 0x10FFFF || ch !== '}') {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        // UTF-16 Encoding
        if (code <= 0xFFFF) {
            return String.fromCharCode(code);
        }
        cu1 = ((code - 0x10000) >> 10) + 0xD800;
        cu2 = ((code - 0x10000) & 1023) + 0xDC00;
        return String.fromCharCode(cu1, cu2);
    }

    function getEscapedIdentifier() {
        var ch, id;

        ch = source.charCodeAt(index++);
        id = String.fromCharCode(ch);

        // '\u' (char #92, char #117) denotes an escaped character.
        if (ch === 92) {
            if (source.charCodeAt(index) !== 117) {
                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
            }
            ++index;
            ch = scanHexEscape('u');
            if (!ch || ch === '\\' || !isIdentifierStart(ch.charCodeAt(0))) {
                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
            }
            id = ch;
        }

        while (index < length) {
            ch = source.charCodeAt(index);
            if (!isIdentifierPart(ch)) {
                break;
            }
            ++index;
            id += String.fromCharCode(ch);

            // '\u' (char #92, char #117) denotes an escaped character.
            if (ch === 92) {
                id = id.substr(0, id.length - 1);
                if (source.charCodeAt(index) !== 117) {
                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                }
                ++index;
                ch = scanHexEscape('u');
                if (!ch || ch === '\\' || !isIdentifierPart(ch.charCodeAt(0))) {
                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                }
                id += ch;
            }
        }

        return id;
    }

    function getIdentifier() {
        var start, ch;

        start = index++;
        while (index < length) {
            ch = source.charCodeAt(index);
            if (ch === 92) {
                // Blackslash (char #92) marks Unicode escape sequence.
                index = start;
                return getEscapedIdentifier();
            }
            if (isIdentifierPart(ch)) {
                ++index;
            } else {
                break;
            }
        }

        return source.slice(start, index);
    }

    function scanIdentifier() {
        var start, id, type;

        start = index;

        // Backslash (char #92) starts an escaped character.
        id = (source.charCodeAt(index) === 92) ? getEscapedIdentifier() : getIdentifier();

        // There is no keyword or literal with only one character.
        // Thus, it must be an identifier.
        if (id.length === 1) {
            type = Token.Identifier;
        } else if (isKeyword(id)) {
            type = Token.Keyword;
        } else if (id === 'null') {
            type = Token.NullLiteral;
        } else if (id === 'true' || id === 'false') {
            type = Token.BooleanLiteral;
        } else {
            type = Token.Identifier;
        }

        return {
            type: type,
            value: id,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }


    // 7.7 Punctuators

    function scanPunctuator() {
        var start = index,
            code = source.charCodeAt(index),
            code2,
            ch1 = source[index],
            ch2,
            ch3,
            ch4;

        switch (code) {
        // Check for most common single-character punctuators.
        case 40:   // ( open bracket
        case 41:   // ) close bracket
        case 59:   // ; semicolon
        case 44:   // , comma
        case 123:  // { open curly brace
        case 125:  // } close curly brace
        case 91:   // [
        case 93:   // ]
        case 58:   // :
        case 63:   // ?
        case 126:  // ~
            ++index;
            if (extra.tokenize) {
                if (code === 40) {
                    extra.openParenToken = extra.tokens.length;
                } else if (code === 123) {
                    extra.openCurlyToken = extra.tokens.length;
                }
            }
            return {
                type: Token.Punctuator,
                value: String.fromCharCode(code),
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };

        default:
            code2 = source.charCodeAt(index + 1);

            // '=' (char #61) marks an assignment or comparison operator.
            if (code2 === 61) {
                switch (code) {
                case 37:  // %
                case 38:  // &
                case 42:  // *:
                case 43:  // +
                case 45:  // -
                case 47:  // /
                case 60:  // <
                case 62:  // >
                case 94:  // ^
                case 124: // |
                    index += 2;
                    return {
                        type: Token.Punctuator,
                        value: String.fromCharCode(code) + String.fromCharCode(code2),
                        lineNumber: lineNumber,
                        lineStart: lineStart,
                        range: [start, index]
                    };

                case 33: // !
                case 61: // =
                    index += 2;

                    // !== and ===
                    if (source.charCodeAt(index) === 61) {
                        ++index;
                    }
                    return {
                        type: Token.Punctuator,
                        value: source.slice(start, index),
                        lineNumber: lineNumber,
                        lineStart: lineStart,
                        range: [start, index]
                    };
                default:
                    break;
                }
            }
            break;
        }

        // Peek more characters.

        ch2 = source[index + 1];
        ch3 = source[index + 2];
        ch4 = source[index + 3];

        // 4-character punctuator: >>>=

        if (ch1 === '>' && ch2 === '>' && ch3 === '>') {
            if (ch4 === '=') {
                index += 4;
                return {
                    type: Token.Punctuator,
                    value: '>>>=',
                    lineNumber: lineNumber,
                    lineStart: lineStart,
                    range: [start, index]
                };
            }
        }

        // 3-character punctuators: === !== >>> <<= >>=

        if (ch1 === '>' && ch2 === '>' && ch3 === '>') {
            index += 3;
            return {
                type: Token.Punctuator,
                value: '>>>',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '<' && ch2 === '<' && ch3 === '=') {
            index += 3;
            return {
                type: Token.Punctuator,
                value: '<<=',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '>' && ch2 === '>' && ch3 === '=') {
            index += 3;
            return {
                type: Token.Punctuator,
                value: '>>=',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '.' && ch2 === '.' && ch3 === '.') {
            index += 3;
            return {
                type: Token.Punctuator,
                value: '...',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        // Other 2-character punctuators: ++ -- << >> && ||

        // Don't match these tokens if we're in a type, since they never can
        // occur and can mess up types like Map<string, Array<string>>
        if (ch1 === ch2 && ('+-<>&|'.indexOf(ch1) >= 0) && !state.inType) {
            index += 2;
            return {
                type: Token.Punctuator,
                value: ch1 + ch2,
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '=' && ch2 === '>') {
            index += 2;
            return {
                type: Token.Punctuator,
                value: '=>',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if ('<>=!+-*%&|^/'.indexOf(ch1) >= 0) {
            ++index;
            return {
                type: Token.Punctuator,
                value: ch1,
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '.') {
            ++index;
            return {
                type: Token.Punctuator,
                value: ch1,
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
    }

    // 7.8.3 Numeric Literals

    function scanHexLiteral(start) {
        var number = '';

        while (index < length) {
            if (!isHexDigit(source[index])) {
                break;
            }
            number += source[index++];
        }

        if (number.length === 0) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        if (isIdentifierStart(source.charCodeAt(index))) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.NumericLiteral,
            value: parseInt('0x' + number, 16),
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanOctalLiteral(prefix, start) {
        var number, octal;

        if (isOctalDigit(prefix)) {
            octal = true;
            number = '0' + source[index++];
        } else {
            octal = false;
            ++index;
            number = '';
        }

        while (index < length) {
            if (!isOctalDigit(source[index])) {
                break;
            }
            number += source[index++];
        }

        if (!octal && number.length === 0) {
            // only 0o or 0O
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        if (isIdentifierStart(source.charCodeAt(index)) || isDecimalDigit(source.charCodeAt(index))) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.NumericLiteral,
            value: parseInt(number, 8),
            octal: octal,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanNumericLiteral() {
        var number, start, ch, octal;

        ch = source[index];
        assert(isDecimalDigit(ch.charCodeAt(0)) || (ch === '.'),
            'Numeric literal must start with a decimal digit or a decimal point');

        start = index;
        number = '';
        if (ch !== '.') {
            number = source[index++];
            ch = source[index];

            // Hex number starts with '0x'.
            // Octal number starts with '0'.
            // Octal number in ES6 starts with '0o'.
            // Binary number in ES6 starts with '0b'.
            if (number === '0') {
                if (ch === 'x' || ch === 'X') {
                    ++index;
                    return scanHexLiteral(start);
                }
                if (ch === 'b' || ch === 'B') {
                    ++index;
                    number = '';

                    while (index < length) {
                        ch = source[index];
                        if (ch !== '0' && ch !== '1') {
                            break;
                        }
                        number += source[index++];
                    }

                    if (number.length === 0) {
                        // only 0b or 0B
                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                    }

                    if (index < length) {
                        ch = source.charCodeAt(index);
                        if (isIdentifierStart(ch) || isDecimalDigit(ch)) {
                            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                        }
                    }
                    return {
                        type: Token.NumericLiteral,
                        value: parseInt(number, 2),
                        lineNumber: lineNumber,
                        lineStart: lineStart,
                        range: [start, index]
                    };
                }
                if (ch === 'o' || ch === 'O' || isOctalDigit(ch)) {
                    return scanOctalLiteral(ch, start);
                }
                // decimal number starts with '0' such as '09' is illegal.
                if (ch && isDecimalDigit(ch.charCodeAt(0))) {
                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                }
            }

            while (isDecimalDigit(source.charCodeAt(index))) {
                number += source[index++];
            }
            ch = source[index];
        }

        if (ch === '.') {
            number += source[index++];
            while (isDecimalDigit(source.charCodeAt(index))) {
                number += source[index++];
            }
            ch = source[index];
        }

        if (ch === 'e' || ch === 'E') {
            number += source[index++];

            ch = source[index];
            if (ch === '+' || ch === '-') {
                number += source[index++];
            }
            if (isDecimalDigit(source.charCodeAt(index))) {
                while (isDecimalDigit(source.charCodeAt(index))) {
                    number += source[index++];
                }
            } else {
                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
            }
        }

        if (isIdentifierStart(source.charCodeAt(index))) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.NumericLiteral,
            value: parseFloat(number),
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    // 7.8.4 String Literals

    function scanStringLiteral() {
        var str = '', quote, start, ch, code, unescaped, restore, octal = false;

        quote = source[index];
        assert((quote === '\'' || quote === '"'),
            'String literal must starts with a quote');

        start = index;
        ++index;

        while (index < length) {
            ch = source[index++];

            if (ch === quote) {
                quote = '';
                break;
            } else if (ch === '\\') {
                ch = source[index++];
                if (!ch || !isLineTerminator(ch.charCodeAt(0))) {
                    switch (ch) {
                    case 'n':
                        str += '\n';
                        break;
                    case 'r':
                        str += '\r';
                        break;
                    case 't':
                        str += '\t';
                        break;
                    case 'u':
                    case 'x':
                        if (source[index] === '{') {
                            ++index;
                            str += scanUnicodeCodePointEscape();
                        } else {
                            restore = index;
                            unescaped = scanHexEscape(ch);
                            if (unescaped) {
                                str += unescaped;
                            } else {
                                index = restore;
                                str += ch;
                            }
                        }
                        break;
                    case 'b':
                        str += '\b';
                        break;
                    case 'f':
                        str += '\f';
                        break;
                    case 'v':
                        str += '\x0B';
                        break;

                    default:
                        if (isOctalDigit(ch)) {
                            code = '01234567'.indexOf(ch);

                            // \0 is not octal escape sequence
                            if (code !== 0) {
                                octal = true;
                            }

                            if (index < length && isOctalDigit(source[index])) {
                                octal = true;
                                code = code * 8 + '01234567'.indexOf(source[index++]);

                                // 3 digits are only allowed when string starts
                                // with 0, 1, 2, 3
                                if ('0123'.indexOf(ch) >= 0 &&
                                        index < length &&
                                        isOctalDigit(source[index])) {
                                    code = code * 8 + '01234567'.indexOf(source[index++]);
                                }
                            }
                            str += String.fromCharCode(code);
                        } else {
                            str += ch;
                        }
                        break;
                    }
                } else {
                    ++lineNumber;
                    if (ch ===  '\r' && source[index] === '\n') {
                        ++index;
                    }
                    lineStart = index;
                }
            } else if (isLineTerminator(ch.charCodeAt(0))) {
                break;
            } else {
                str += ch;
            }
        }

        if (quote !== '') {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.StringLiteral,
            value: str,
            octal: octal,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanTemplate() {
        var cooked = '', ch, start, terminated, tail, restore, unescaped, code, octal;

        terminated = false;
        tail = false;
        start = index;

        ++index;

        while (index < length) {
            ch = source[index++];
            if (ch === '`') {
                tail = true;
                terminated = true;
                break;
            } else if (ch === '$') {
                if (source[index] === '{') {
                    ++index;
                    terminated = true;
                    break;
                }
                cooked += ch;
            } else if (ch === '\\') {
                ch = source[index++];
                if (!isLineTerminator(ch.charCodeAt(0))) {
                    switch (ch) {
                    case 'n':
                        cooked += '\n';
                        break;
                    case 'r':
                        cooked += '\r';
                        break;
                    case 't':
                        cooked += '\t';
                        break;
                    case 'u':
                    case 'x':
                        if (source[index] === '{') {
                            ++index;
                            cooked += scanUnicodeCodePointEscape();
                        } else {
                            restore = index;
                            unescaped = scanHexEscape(ch);
                            if (unescaped) {
                                cooked += unescaped;
                            } else {
                                index = restore;
                                cooked += ch;
                            }
                        }
                        break;
                    case 'b':
                        cooked += '\b';
                        break;
                    case 'f':
                        cooked += '\f';
                        break;
                    case 'v':
                        cooked += '\v';
                        break;

                    default:
                        if (isOctalDigit(ch)) {
                            code = '01234567'.indexOf(ch);

                            // \0 is not octal escape sequence
                            if (code !== 0) {
                                octal = true;
                            }

                            if (index < length && isOctalDigit(source[index])) {
                                octal = true;
                                code = code * 8 + '01234567'.indexOf(source[index++]);

                                // 3 digits are only allowed when string starts
                                // with 0, 1, 2, 3
                                if ('0123'.indexOf(ch) >= 0 &&
                                        index < length &&
                                        isOctalDigit(source[index])) {
                                    code = code * 8 + '01234567'.indexOf(source[index++]);
                                }
                            }
                            cooked += String.fromCharCode(code);
                        } else {
                            cooked += ch;
                        }
                        break;
                    }
                } else {
                    ++lineNumber;
                    if (ch ===  '\r' && source[index] === '\n') {
                        ++index;
                    }
                    lineStart = index;
                }
            } else if (isLineTerminator(ch.charCodeAt(0))) {
                ++lineNumber;
                if (ch ===  '\r' && source[index] === '\n') {
                    ++index;
                }
                lineStart = index;
                cooked += '\n';
            } else {
                cooked += ch;
            }
        }

        if (!terminated) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.Template,
            value: {
                cooked: cooked,
                raw: source.slice(start + 1, index - ((tail) ? 1 : 2))
            },
            tail: tail,
            octal: octal,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanTemplateElement(option) {
        var startsWith, template;

        lookahead = null;
        skipComment();

        startsWith = (option.head) ? '`' : '}';

        if (source[index] !== startsWith) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        template = scanTemplate();

        peek();

        return template;
    }

    function scanRegExp() {
        var str, ch, start, pattern, flags, value, classMarker = false, restore, terminated = false, tmp;

        lookahead = null;
        skipComment();

        start = index;
        ch = source[index];
        assert(ch === '/', 'Regular expression literal must start with a slash');
        str = source[index++];

        while (index < length) {
            ch = source[index++];
            str += ch;
            if (classMarker) {
                if (ch === ']') {
                    classMarker = false;
                }
            } else {
                if (ch === '\\') {
                    ch = source[index++];
                    // ECMA-262 7.8.5
                    if (isLineTerminator(ch.charCodeAt(0))) {
                        throwError({}, Messages.UnterminatedRegExp);
                    }
                    str += ch;
                } else if (ch === '/') {
                    terminated = true;
                    break;
                } else if (ch === '[') {
                    classMarker = true;
                } else if (isLineTerminator(ch.charCodeAt(0))) {
                    throwError({}, Messages.UnterminatedRegExp);
                }
            }
        }

        if (!terminated) {
            throwError({}, Messages.UnterminatedRegExp);
        }

        // Exclude leading and trailing slash.
        pattern = str.substr(1, str.length - 2);

        flags = '';
        while (index < length) {
            ch = source[index];
            if (!isIdentifierPart(ch.charCodeAt(0))) {
                break;
            }

            ++index;
            if (ch === '\\' && index < length) {
                ch = source[index];
                if (ch === 'u') {
                    ++index;
                    restore = index;
                    ch = scanHexEscape('u');
                    if (ch) {
                        flags += ch;
                        for (str += '\\u'; restore < index; ++restore) {
                            str += source[restore];
                        }
                    } else {
                        index = restore;
                        flags += 'u';
                        str += '\\u';
                    }
                } else {
                    str += '\\';
                }
            } else {
                flags += ch;
                str += ch;
            }
        }

        tmp = pattern;
        if (flags.indexOf('u') >= 0) {
            // Replace each astral symbol and every Unicode code point
            // escape sequence that represents such a symbol with a single
            // ASCII symbol to avoid throwing on regular expressions that
            // are only valid in combination with the `/u` flag.
            tmp = tmp
                .replace(/\\u\{([0-9a-fA-F]{5,6})\}/g, 'x')
                .replace(/[\uD800-\uDBFF][\uDC00-\uDFFF]/g, 'x');
        }

        // First, detect invalid regular expressions.
        try {
            value = new RegExp(tmp);
        } catch (e) {
            throwError({}, Messages.InvalidRegExp);
        }

        // Return a regular expression object for this pattern-flag pair, or
        // `null` in case the current environment doesn't support the flags it
        // uses.
        try {
            value = new RegExp(pattern, flags);
        } catch (exception) {
            value = null;
        }

        peek();

        if (extra.tokenize) {
            return {
                type: Token.RegularExpression,
                value: value,
                regex: {
                    pattern: pattern,
                    flags: flags
                },
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }
        return {
            literal: str,
            value: value,
            regex: {
                pattern: pattern,
                flags: flags
            },
            range: [start, index]
        };
    }

    function isIdentifierName(token) {
        return token.type === Token.Identifier ||
            token.type === Token.Keyword ||
            token.type === Token.BooleanLiteral ||
            token.type === Token.NullLiteral;
    }

    function advanceSlash() {
        var prevToken,
            checkToken;
        // Using the following algorithm:
        // https://github.com/mozilla/sweet.js/wiki/design
        prevToken = extra.tokens[extra.tokens.length - 1];
        if (!prevToken) {
            // Nothing before that: it cannot be a division.
            return scanRegExp();
        }
        if (prevToken.type === 'Punctuator') {
            if (prevToken.value === ')') {
                checkToken = extra.tokens[extra.openParenToken - 1];
                if (checkToken &&
                        checkToken.type === 'Keyword' &&
                        (checkToken.value === 'if' ||
                         checkToken.value === 'while' ||
                         checkToken.value === 'for' ||
                         checkToken.value === 'with')) {
                    return scanRegExp();
                }
                return scanPunctuator();
            }
            if (prevToken.value === '}') {
                // Dividing a function by anything makes little sense,
                // but we have to check for that.
                if (extra.tokens[extra.openCurlyToken - 3] &&
                        extra.tokens[extra.openCurlyToken - 3].type === 'Keyword') {
                    // Anonymous function.
                    checkToken = extra.tokens[extra.openCurlyToken - 4];
                    if (!checkToken) {
                        return scanPunctuator();
                    }
                } else if (extra.tokens[extra.openCurlyToken - 4] &&
                        extra.tokens[extra.openCurlyToken - 4].type === 'Keyword') {
                    // Named function.
                    checkToken = extra.tokens[extra.openCurlyToken - 5];
                    if (!checkToken) {
                        return scanRegExp();
                    }
                } else {
                    return scanPunctuator();
                }
                // checkToken determines whether the function is
                // a declaration or an expression.
                if (FnExprTokens.indexOf(checkToken.value) >= 0) {
                    // It is an expression.
                    return scanPunctuator();
                }
                // It is a declaration.
                return scanRegExp();
            }
            return scanRegExp();
        }
        if (prevToken.type === 'Keyword') {
            return scanRegExp();
        }
        return scanPunctuator();
    }

    function advance() {
        var ch;

        if (!state.inXJSChild) {
            skipComment();
        }

        if (index >= length) {
            return {
                type: Token.EOF,
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [index, index]
            };
        }

        if (state.inXJSChild) {
            return advanceXJSChild();
        }

        ch = source.charCodeAt(index);

        // Very common: ( and ) and ;
        if (ch === 40 || ch === 41 || ch === 58) {
            return scanPunctuator();
        }

        // String literal starts with single quote (#39) or double quote (#34).
        if (ch === 39 || ch === 34) {
            if (state.inXJSTag) {
                return scanXJSStringLiteral();
            }
            return scanStringLiteral();
        }

        if (state.inXJSTag && isXJSIdentifierStart(ch)) {
            return scanXJSIdentifier();
        }

        if (ch === 96) {
            return scanTemplate();
        }
        if (isIdentifierStart(ch)) {
            return scanIdentifier();
        }

        // Dot (.) char #46 can also start a floating-point number, hence the need
        // to check the next character.
        if (ch === 46) {
            if (isDecimalDigit(source.charCodeAt(index + 1))) {
                return scanNumericLiteral();
            }
            return scanPunctuator();
        }

        if (isDecimalDigit(ch)) {
            return scanNumericLiteral();
        }

        // Slash (/) char #47 can also start a regex.
        if (extra.tokenize && ch === 47) {
            return advanceSlash();
        }

        return scanPunctuator();
    }

    function lex() {
        var token;

        token = lookahead;
        index = token.range[1];
        lineNumber = token.lineNumber;
        lineStart = token.lineStart;

        lookahead = advance();

        index = token.range[1];
        lineNumber = token.lineNumber;
        lineStart = token.lineStart;

        return token;
    }

    function peek() {
        var pos, line, start;

        pos = index;
        line = lineNumber;
        start = lineStart;
        lookahead = advance();
        index = pos;
        lineNumber = line;
        lineStart = start;
    }

    function lookahead2() {
        var adv, pos, line, start, result;

        // If we are collecting the tokens, don't grab the next one yet.
        adv = (typeof extra.advance === 'function') ? extra.advance : advance;

        pos = index;
        line = lineNumber;
        start = lineStart;

        // Scan for the next immediate token.
        if (lookahead === null) {
            lookahead = adv();
        }
        index = lookahead.range[1];
        lineNumber = lookahead.lineNumber;
        lineStart = lookahead.lineStart;

        // Grab the token right after.
        result = adv();
        index = pos;
        lineNumber = line;
        lineStart = start;

        return result;
    }

    function rewind(token) {
        index = token.range[0];
        lineNumber = token.lineNumber;
        lineStart = token.lineStart;
        lookahead = token;
    }

    function markerCreate() {
        if (!extra.loc && !extra.range) {
            return undefined;
        }
        skipComment();
        return {offset: index, line: lineNumber, col: index - lineStart};
    }

    function markerCreatePreserveWhitespace() {
        if (!extra.loc && !extra.range) {
            return undefined;
        }
        return {offset: index, line: lineNumber, col: index - lineStart};
    }

    function processComment(node) {
        var lastChild,
            trailingComments,
            bottomRight = extra.bottomRightStack,
            last = bottomRight[bottomRight.length - 1];

        if (node.type === Syntax.Program) {
            if (node.body.length > 0) {
                return;
            }
        }

        if (extra.trailingComments.length > 0) {
            if (extra.trailingComments[0].range[0] >= node.range[1]) {
                trailingComments = extra.trailingComments;
                extra.trailingComments = [];
            } else {
                extra.trailingComments.length = 0;
            }
        } else {
            if (last && last.trailingComments && last.trailingComments[0].range[0] >= node.range[1]) {
                trailingComments = last.trailingComments;
                delete last.trailingComments;
            }
        }

        // Eating the stack.
        if (last) {
            while (last && last.range[0] >= node.range[0]) {
                lastChild = last;
                last = bottomRight.pop();
            }
        }

        if (lastChild) {
            if (lastChild.leadingComments && lastChild.leadingComments[lastChild.leadingComments.length - 1].range[1] <= node.range[0]) {
                node.leadingComments = lastChild.leadingComments;
                delete lastChild.leadingComments;
            }
        } else if (extra.leadingComments.length > 0 && extra.leadingComments[extra.leadingComments.length - 1].range[1] <= node.range[0]) {
            node.leadingComments = extra.leadingComments;
            extra.leadingComments = [];
        }

        if (trailingComments) {
            node.trailingComments = trailingComments;
        }

        bottomRight.push(node);
    }

    function markerApply(marker, node) {
        if (extra.range) {
            node.range = [marker.offset, index];
        }
        if (extra.loc) {
            node.loc = {
                start: {
                    line: marker.line,
                    column: marker.col
                },
                end: {
                    line: lineNumber,
                    column: index - lineStart
                }
            };
            node = delegate.postProcess(node);
        }
        if (extra.attachComment) {
            processComment(node);
        }
        return node;
    }

    SyntaxTreeDelegate = {

        name: 'SyntaxTree',

        postProcess: function (node) {
            return node;
        },

        createArrayExpression: function (elements) {
            return {
                type: Syntax.ArrayExpression,
                elements: elements
            };
        },

        createAssignmentExpression: function (operator, left, right) {
            return {
                type: Syntax.AssignmentExpression,
                operator: operator,
                left: left,
                right: right
            };
        },

        createBinaryExpression: function (operator, left, right) {
            var type = (operator === '||' || operator === '&&') ? Syntax.LogicalExpression :
                        Syntax.BinaryExpression;
            return {
                type: type,
                operator: operator,
                left: left,
                right: right
            };
        },

        createBlockStatement: function (body) {
            return {
                type: Syntax.BlockStatement,
                body: body
            };
        },

        createBreakStatement: function (label) {
            return {
                type: Syntax.BreakStatement,
                label: label
            };
        },

        createCallExpression: function (callee, args) {
            return {
                type: Syntax.CallExpression,
                callee: callee,
                'arguments': args
            };
        },

        createCatchClause: function (param, body) {
            return {
                type: Syntax.CatchClause,
                param: param,
                body: body
            };
        },

        createConditionalExpression: function (test, consequent, alternate) {
            return {
                type: Syntax.ConditionalExpression,
                test: test,
                consequent: consequent,
                alternate: alternate
            };
        },

        createContinueStatement: function (label) {
            return {
                type: Syntax.ContinueStatement,
                label: label
            };
        },

        createDebuggerStatement: function () {
            return {
                type: Syntax.DebuggerStatement
            };
        },

        createDoWhileStatement: function (body, test) {
            return {
                type: Syntax.DoWhileStatement,
                body: body,
                test: test
            };
        },

        createEmptyStatement: function () {
            return {
                type: Syntax.EmptyStatement
            };
        },

        createExpressionStatement: function (expression) {
            return {
                type: Syntax.ExpressionStatement,
                expression: expression
            };
        },

        createForStatement: function (init, test, update, body) {
            return {
                type: Syntax.ForStatement,
                init: init,
                test: test,
                update: update,
                body: body
            };
        },

        createForInStatement: function (left, right, body) {
            return {
                type: Syntax.ForInStatement,
                left: left,
                right: right,
                body: body,
                each: false
            };
        },

        createForOfStatement: function (left, right, body) {
            return {
                type: Syntax.ForOfStatement,
                left: left,
                right: right,
                body: body
            };
        },

        createFunctionDeclaration: function (id, params, defaults, body, rest, generator, expression,
                                             isAsync, returnType, typeParameters) {
            var funDecl = {
                type: Syntax.FunctionDeclaration,
                id: id,
                params: params,
                defaults: defaults,
                body: body,
                rest: rest,
                generator: generator,
                expression: expression,
                returnType: returnType,
                typeParameters: typeParameters
            };

            if (isAsync) {
                funDecl.async = true;
            }

            return funDecl;
        },

        createFunctionExpression: function (id, params, defaults, body, rest, generator, expression,
                                            isAsync, returnType, typeParameters) {
            var funExpr = {
                type: Syntax.FunctionExpression,
                id: id,
                params: params,
                defaults: defaults,
                body: body,
                rest: rest,
                generator: generator,
                expression: expression,
                returnType: returnType,
                typeParameters: typeParameters
            };

            if (isAsync) {
                funExpr.async = true;
            }

            return funExpr;
        },

        createIdentifier: function (name) {
            return {
                type: Syntax.Identifier,
                name: name,
                // Only here to initialize the shape of the object to ensure
                // that the 'typeAnnotation' key is ordered before others that
                // are added later (like 'loc' and 'range'). This just helps
                // keep the shape of Identifier nodes consistent with everything
                // else.
                typeAnnotation: undefined,
                optional: undefined
            };
        },

        createTypeAnnotation: function (typeAnnotation) {
            return {
                type: Syntax.TypeAnnotation,
                typeAnnotation: typeAnnotation
            };
        },

        createFunctionTypeAnnotation: function (params, returnType, rest, typeParameters) {
            return {
                type: Syntax.FunctionTypeAnnotation,
                params: params,
                returnType: returnType,
                rest: rest,
                typeParameters: typeParameters
            };
        },

        createFunctionTypeParam: function (name, typeAnnotation, optional) {
            return {
                type: Syntax.FunctionTypeParam,
                name: name,
                typeAnnotation: typeAnnotation,
                optional: optional
            };
        },

        createNullableTypeAnnotation: function (typeAnnotation) {
            return {
                type: Syntax.NullableTypeAnnotation,
                typeAnnotation: typeAnnotation
            };
        },

        createArrayTypeAnnotation: function (elementType) {
            return {
                type: Syntax.ArrayTypeAnnotation,
                elementType: elementType
            };
        },

        createGenericTypeAnnotation: function (id, typeParameters) {
            return {
                type: Syntax.GenericTypeAnnotation,
                id: id,
                typeParameters: typeParameters
            };
        },

        createQualifiedTypeIdentifier: function (qualification, id) {
            return {
                type: Syntax.QualifiedTypeIdentifier,
                qualification: qualification,
                id: id
            };
        },

        createTypeParameterDeclaration: function (params) {
            return {
                type: Syntax.TypeParameterDeclaration,
                params: params
            };
        },

        createTypeParameterInstantiation: function (params) {
            return {
                type: Syntax.TypeParameterInstantiation,
                params: params
            };
        },

        createAnyTypeAnnotation: function () {
            return {
                type: Syntax.AnyTypeAnnotation
            };
        },

        createBooleanTypeAnnotation: function () {
            return {
                type: Syntax.BooleanTypeAnnotation
            };
        },

        createNumberTypeAnnotation: function () {
            return {
                type: Syntax.NumberTypeAnnotation
            };
        },

        createStringTypeAnnotation: function () {
            return {
                type: Syntax.StringTypeAnnotation
            };
        },

        createStringLiteralTypeAnnotation: function (token) {
            return {
                type: Syntax.StringLiteralTypeAnnotation,
                value: token.value,
                raw: source.slice(token.range[0], token.range[1])
            };
        },

        createVoidTypeAnnotation: function () {
            return {
                type: Syntax.VoidTypeAnnotation
            };
        },

        createTypeofTypeAnnotation: function (argument) {
            return {
                type: Syntax.TypeofTypeAnnotation,
                argument: argument
            };
        },

        createTupleTypeAnnotation: function (types) {
            return {
                type: Syntax.TupleTypeAnnotation,
                types: types
            };
        },

        createObjectTypeAnnotation: function (properties, indexers, callProperties) {
            return {
                type: Syntax.ObjectTypeAnnotation,
                properties: properties,
                indexers: indexers,
                callProperties: callProperties
            };
        },

        createObjectTypeIndexer: function (id, key, value, isStatic) {
            return {
                type: Syntax.ObjectTypeIndexer,
                id: id,
                key: key,
                value: value,
                "static": isStatic
            };
        },

        createObjectTypeCallProperty: function (value, isStatic) {
            return {
                type: Syntax.ObjectTypeCallProperty,
                value: value,
                "static": isStatic
            };
        },

        createObjectTypeProperty: function (key, value, optional, isStatic) {
            return {
                type: Syntax.ObjectTypeProperty,
                key: key,
                value: value,
                optional: optional,
                "static": isStatic
            };
        },

        createUnionTypeAnnotation: function (types) {
            return {
                type: Syntax.UnionTypeAnnotation,
                types: types
            };
        },

        createIntersectionTypeAnnotation: function (types) {
            return {
                type: Syntax.IntersectionTypeAnnotation,
                types: types
            };
        },

        createTypeAlias: function (id, typeParameters, right) {
            return {
                type: Syntax.TypeAlias,
                id: id,
                typeParameters: typeParameters,
                right: right
            };
        },

        createInterface: function (id, typeParameters, body, extended) {
            return {
                type: Syntax.InterfaceDeclaration,
                id: id,
                typeParameters: typeParameters,
                body: body,
                "extends": extended
            };
        },

        createInterfaceExtends: function (id, typeParameters) {
            return {
                type: Syntax.InterfaceExtends,
                id: id,
                typeParameters: typeParameters
            };
        },

        createDeclareFunction: function (id) {
            return {
                type: Syntax.DeclareFunction,
                id: id
            };
        },

        createDeclareVariable: function (id) {
            return {
                type: Syntax.DeclareVariable,
                id: id
            };
        },

        createDeclareModule: function (id, body) {
            return {
                type: Syntax.DeclareModule,
                id: id,
                body: body
            };
        },

        createXJSAttribute: function (name, value) {
            return {
                type: Syntax.XJSAttribute,
                name: name,
                value: value || null
            };
        },

        createXJSSpreadAttribute: function (argument) {
            return {
                type: Syntax.XJSSpreadAttribute,
                argument: argument
            };
        },

        createXJSIdentifier: function (name) {
            return {
                type: Syntax.XJSIdentifier,
                name: name
            };
        },

        createXJSNamespacedName: function (namespace, name) {
            return {
                type: Syntax.XJSNamespacedName,
                namespace: namespace,
                name: name
            };
        },

        createXJSMemberExpression: function (object, property) {
            return {
                type: Syntax.XJSMemberExpression,
                object: object,
                property: property
            };
        },

        createXJSElement: function (openingElement, closingElement, children) {
            return {
                type: Syntax.XJSElement,
                openingElement: openingElement,
                closingElement: closingElement,
                children: children
            };
        },

        createXJSEmptyExpression: function () {
            return {
                type: Syntax.XJSEmptyExpression
            };
        },

        createXJSExpressionContainer: function (expression) {
            return {
                type: Syntax.XJSExpressionContainer,
                expression: expression
            };
        },

        createXJSOpeningElement: function (name, attributes, selfClosing) {
            return {
                type: Syntax.XJSOpeningElement,
                name: name,
                selfClosing: selfClosing,
                attributes: attributes
            };
        },

        createXJSClosingElement: function (name) {
            return {
                type: Syntax.XJSClosingElement,
                name: name
            };
        },

        createIfStatement: function (test, consequent, alternate) {
            return {
                type: Syntax.IfStatement,
                test: test,
                consequent: consequent,
                alternate: alternate
            };
        },

        createLabeledStatement: function (label, body) {
            return {
                type: Syntax.LabeledStatement,
                label: label,
                body: body
            };
        },

        createLiteral: function (token) {
            var object = {
                type: Syntax.Literal,
                value: token.value,
                raw: source.slice(token.range[0], token.range[1])
            };
            if (token.regex) {
                object.regex = token.regex;
            }
            return object;
        },

        createMemberExpression: function (accessor, object, property) {
            return {
                type: Syntax.MemberExpression,
                computed: accessor === '[',
                object: object,
                property: property
            };
        },

        createNewExpression: function (callee, args) {
            return {
                type: Syntax.NewExpression,
                callee: callee,
                'arguments': args
            };
        },

        createObjectExpression: function (properties) {
            return {
                type: Syntax.ObjectExpression,
                properties: properties
            };
        },

        createPostfixExpression: function (operator, argument) {
            return {
                type: Syntax.UpdateExpression,
                operator: operator,
                argument: argument,
                prefix: false
            };
        },

        createProgram: function (body) {
            return {
                type: Syntax.Program,
                body: body
            };
        },

        createProperty: function (kind, key, value, method, shorthand, computed) {
            return {
                type: Syntax.Property,
                key: key,
                value: value,
                kind: kind,
                method: method,
                shorthand: shorthand,
                computed: computed
            };
        },

        createReturnStatement: function (argument) {
            return {
                type: Syntax.ReturnStatement,
                argument: argument
            };
        },

        createSequenceExpression: function (expressions) {
            return {
                type: Syntax.SequenceExpression,
                expressions: expressions
            };
        },

        createSwitchCase: function (test, consequent) {
            return {
                type: Syntax.SwitchCase,
                test: test,
                consequent: consequent
            };
        },

        createSwitchStatement: function (discriminant, cases) {
            return {
                type: Syntax.SwitchStatement,
                discriminant: discriminant,
                cases: cases
            };
        },

        createThisExpression: function () {
            return {
                type: Syntax.ThisExpression
            };
        },

        createThrowStatement: function (argument) {
            return {
                type: Syntax.ThrowStatement,
                argument: argument
            };
        },

        createTryStatement: function (block, guardedHandlers, handlers, finalizer) {
            return {
                type: Syntax.TryStatement,
                block: block,
                guardedHandlers: guardedHandlers,
                handlers: handlers,
                finalizer: finalizer
            };
        },

        createUnaryExpression: function (operator, argument) {
            if (operator === '++' || operator === '--') {
                return {
                    type: Syntax.UpdateExpression,
                    operator: operator,
                    argument: argument,
                    prefix: true
                };
            }
            return {
                type: Syntax.UnaryExpression,
                operator: operator,
                argument: argument,
                prefix: true
            };
        },

        createVariableDeclaration: function (declarations, kind) {
            return {
                type: Syntax.VariableDeclaration,
                declarations: declarations,
                kind: kind
            };
        },

        createVariableDeclarator: function (id, init) {
            return {
                type: Syntax.VariableDeclarator,
                id: id,
                init: init
            };
        },

        createWhileStatement: function (test, body) {
            return {
                type: Syntax.WhileStatement,
                test: test,
                body: body
            };
        },

        createWithStatement: function (object, body) {
            return {
                type: Syntax.WithStatement,
                object: object,
                body: body
            };
        },

        createTemplateElement: function (value, tail) {
            return {
                type: Syntax.TemplateElement,
                value: value,
                tail: tail
            };
        },

        createTemplateLiteral: function (quasis, expressions) {
            return {
                type: Syntax.TemplateLiteral,
                quasis: quasis,
                expressions: expressions
            };
        },

        createSpreadElement: function (argument) {
            return {
                type: Syntax.SpreadElement,
                argument: argument
            };
        },

        createSpreadProperty: function (argument) {
            return {
                type: Syntax.SpreadProperty,
                argument: argument
            };
        },

        createTaggedTemplateExpression: function (tag, quasi) {
            return {
                type: Syntax.TaggedTemplateExpression,
                tag: tag,
                quasi: quasi
            };
        },

        createArrowFunctionExpression: function (params, defaults, body, rest, expression, isAsync) {
            var arrowExpr = {
                type: Syntax.ArrowFunctionExpression,
                id: null,
                params: params,
                defaults: defaults,
                body: body,
                rest: rest,
                generator: false,
                expression: expression
            };

            if (isAsync) {
                arrowExpr.async = true;
            }

            return arrowExpr;
        },

        createMethodDefinition: function (propertyType, kind, key, value) {
            return {
                type: Syntax.MethodDefinition,
                key: key,
                value: value,
                kind: kind,
                'static': propertyType === ClassPropertyType["static"]
            };
        },

        createClassProperty: function (key, typeAnnotation, computed, isStatic) {
            return {
                type: Syntax.ClassProperty,
                key: key,
                typeAnnotation: typeAnnotation,
                computed: computed,
                "static": isStatic
            };
        },

        createClassBody: function (body) {
            return {
                type: Syntax.ClassBody,
                body: body
            };
        },

        createClassImplements: function (id, typeParameters) {
            return {
                type: Syntax.ClassImplements,
                id: id,
                typeParameters: typeParameters
            };
        },

        createClassExpression: function (id, superClass, body, typeParameters, superTypeParameters, implemented) {
            return {
                type: Syntax.ClassExpression,
                id: id,
                superClass: superClass,
                body: body,
                typeParameters: typeParameters,
                superTypeParameters: superTypeParameters,
                "implements": implemented
            };
        },

        createClassDeclaration: function (id, superClass, body, typeParameters, superTypeParameters, implemented) {
            return {
                type: Syntax.ClassDeclaration,
                id: id,
                superClass: superClass,
                body: body,
                typeParameters: typeParameters,
                superTypeParameters: superTypeParameters,
                "implements": implemented
            };
        },

        createModuleSpecifier: function (token) {
            return {
                type: Syntax.ModuleSpecifier,
                value: token.value,
                raw: source.slice(token.range[0], token.range[1])
            };
        },

        createExportSpecifier: function (id, name) {
            return {
                type: Syntax.ExportSpecifier,
                id: id,
                name: name
            };
        },

        createExportBatchSpecifier: function () {
            return {
                type: Syntax.ExportBatchSpecifier
            };
        },

        createImportDefaultSpecifier: function (id) {
            return {
                type: Syntax.ImportDefaultSpecifier,
                id: id
            };
        },

        createImportNamespaceSpecifier: function (id) {
            return {
                type: Syntax.ImportNamespaceSpecifier,
                id: id
            };
        },

        createExportDeclaration: function (isDefault, declaration, specifiers, source) {
            return {
                type: Syntax.ExportDeclaration,
                'default': !!isDefault,
                declaration: declaration,
                specifiers: specifiers,
                source: source
            };
        },

        createImportSpecifier: function (id, name) {
            return {
                type: Syntax.ImportSpecifier,
                id: id,
                name: name
            };
        },

        createImportDeclaration: function (specifiers, source) {
            return {
                type: Syntax.ImportDeclaration,
                specifiers: specifiers,
                source: source
            };
        },

        createYieldExpression: function (argument, delegate) {
            return {
                type: Syntax.YieldExpression,
                argument: argument,
                delegate: delegate
            };
        },

        createAwaitExpression: function (argument) {
            return {
                type: Syntax.AwaitExpression,
                argument: argument
            };
        },

        createComprehensionExpression: function (filter, blocks, body) {
            return {
                type: Syntax.ComprehensionExpression,
                filter: filter,
                blocks: blocks,
                body: body
            };
        }

    };

    // Return true if there is a line terminator before the next token.

    function peekLineTerminator() {
        var pos, line, start, found;

        pos = index;
        line = lineNumber;
        start = lineStart;
        skipComment();
        found = lineNumber !== line;
        index = pos;
        lineNumber = line;
        lineStart = start;

        return found;
    }

    // Throw an exception

    function throwError(token, messageFormat) {
        var error,
            args = Array.prototype.slice.call(arguments, 2),
            msg = messageFormat.replace(
                /%(\d)/g,
                function (whole, index) {
                    assert(index < args.length, 'Message reference must be in range');
                    return args[index];
                }
            );

        if (typeof token.lineNumber === 'number') {
            error = new Error('Line ' + token.lineNumber + ': ' + msg);
            error.index = token.range[0];
            error.lineNumber = token.lineNumber;
            error.column = token.range[0] - lineStart + 1;
        } else {
            error = new Error('Line ' + lineNumber + ': ' + msg);
            error.index = index;
            error.lineNumber = lineNumber;
            error.column = index - lineStart + 1;
        }

        error.description = msg;
        throw error;
    }

    function throwErrorTolerant() {
        try {
            throwError.apply(null, arguments);
        } catch (e) {
            if (extra.errors) {
                extra.errors.push(e);
            } else {
                throw e;
            }
        }
    }


    // Throw an exception because of the token.

    function throwUnexpected(token) {
        if (token.type === Token.EOF) {
            throwError(token, Messages.UnexpectedEOS);
        }

        if (token.type === Token.NumericLiteral) {
            throwError(token, Messages.UnexpectedNumber);
        }

        if (token.type === Token.StringLiteral || token.type === Token.XJSText) {
            throwError(token, Messages.UnexpectedString);
        }

        if (token.type === Token.Identifier) {
            throwError(token, Messages.UnexpectedIdentifier);
        }

        if (token.type === Token.Keyword) {
            if (isFutureReservedWord(token.value)) {
                throwError(token, Messages.UnexpectedReserved);
            } else if (strict && isStrictModeReservedWord(token.value)) {
                throwErrorTolerant(token, Messages.StrictReservedWord);
                return;
            }
            throwError(token, Messages.UnexpectedToken, token.value);
        }

        if (token.type === Token.Template) {
            throwError(token, Messages.UnexpectedTemplate, token.value.raw);
        }

        // BooleanLiteral, NullLiteral, or Punctuator.
        throwError(token, Messages.UnexpectedToken, token.value);
    }

    // Expect the next token to match the specified punctuator.
    // If not, an exception will be thrown.

    function expect(value) {
        var token = lex();
        if (token.type !== Token.Punctuator || token.value !== value) {
            throwUnexpected(token);
        }
    }

    // Expect the next token to match the specified keyword.
    // If not, an exception will be thrown.

    function expectKeyword(keyword, contextual) {
        var token = lex();
        if (token.type !== (contextual ? Token.Identifier : Token.Keyword) ||
                token.value !== keyword) {
            throwUnexpected(token);
        }
    }

    // Expect the next token to match the specified contextual keyword.
    // If not, an exception will be thrown.

    function expectContextualKeyword(keyword) {
        return expectKeyword(keyword, true);
    }

    // Return true if the next token matches the specified punctuator.

    function match(value) {
        return lookahead.type === Token.Punctuator && lookahead.value === value;
    }

    // Return true if the next token matches the specified keyword

    function matchKeyword(keyword, contextual) {
        var expectedType = contextual ? Token.Identifier : Token.Keyword;
        return lookahead.type === expectedType && lookahead.value === keyword;
    }

    // Return true if the next token matches the specified contextual keyword

    function matchContextualKeyword(keyword) {
        return matchKeyword(keyword, true);
    }

    // Return true if the next token is an assignment operator

    function matchAssign() {
        var op;

        if (lookahead.type !== Token.Punctuator) {
            return false;
        }
        op = lookahead.value;
        return op === '=' ||
            op === '*=' ||
            op === '/=' ||
            op === '%=' ||
            op === '+=' ||
            op === '-=' ||
            op === '<<=' ||
            op === '>>=' ||
            op === '>>>=' ||
            op === '&=' ||
            op === '^=' ||
            op === '|=';
    }

    // Note that 'yield' is treated as a keyword in strict mode, but a
    // contextual keyword (identifier) in non-strict mode, so we need to
    // use matchKeyword('yield', false) and matchKeyword('yield', true)
    // (i.e. matchContextualKeyword) appropriately.
    function matchYield() {
        return state.yieldAllowed && matchKeyword('yield', !strict);
    }

    function matchAsync() {
        var backtrackToken = lookahead, matches = false;

        if (matchContextualKeyword('async')) {
            lex(); // Make sure peekLineTerminator() starts after 'async'.
            matches = !peekLineTerminator();
            rewind(backtrackToken); // Revert the lex().
        }

        return matches;
    }

    function matchAwait() {
        return state.awaitAllowed && matchContextualKeyword('await');
    }

    function consumeSemicolon() {
        var line, oldIndex = index, oldLineNumber = lineNumber,
            oldLineStart = lineStart, oldLookahead = lookahead;

        // Catch the very common case first: immediately a semicolon (char #59).
        if (source.charCodeAt(index) === 59) {
            lex();
            return;
        }

        line = lineNumber;
        skipComment();
        if (lineNumber !== line) {
            index = oldIndex;
            lineNumber = oldLineNumber;
            lineStart = oldLineStart;
            lookahead = oldLookahead;
            return;
        }

        if (match(';')) {
            lex();
            return;
        }

        if (lookahead.type !== Token.EOF && !match('}')) {
            throwUnexpected(lookahead);
        }
    }

    // Return true if provided expression is LeftHandSideExpression

    function isLeftHandSide(expr) {
        return expr.type === Syntax.Identifier || expr.type === Syntax.MemberExpression;
    }

    function isAssignableLeftHandSide(expr) {
        return isLeftHandSide(expr) || expr.type === Syntax.ObjectPattern || expr.type === Syntax.ArrayPattern;
    }

    // 11.1.4 Array Initialiser

    function parseArrayInitialiser() {
        var elements = [], blocks = [], filter = null, tmp, possiblecomprehension = true, body,
            marker = markerCreate();

        expect('[');
        while (!match(']')) {
            if (lookahead.value === 'for' &&
                    lookahead.type === Token.Keyword) {
                if (!possiblecomprehension) {
                    throwError({}, Messages.ComprehensionError);
                }
                matchKeyword('for');
                tmp = parseForStatement({ignoreBody: true});
                tmp.of = tmp.type === Syntax.ForOfStatement;
                tmp.type = Syntax.ComprehensionBlock;
                if (tmp.left.kind) { // can't be let or const
                    throwError({}, Messages.ComprehensionError);
                }
                blocks.push(tmp);
            } else if (lookahead.value === 'if' &&
                           lookahead.type === Token.Keyword) {
                if (!possiblecomprehension) {
                    throwError({}, Messages.ComprehensionError);
                }
                expectKeyword('if');
                expect('(');
                filter = parseExpression();
                expect(')');
            } else if (lookahead.value === ',' &&
                           lookahead.type === Token.Punctuator) {
                possiblecomprehension = false; // no longer allowed.
                lex();
                elements.push(null);
            } else {
                tmp = parseSpreadOrAssignmentExpression();
                elements.push(tmp);
                if (tmp && tmp.type === Syntax.SpreadElement) {
                    if (!match(']')) {
                        throwError({}, Messages.ElementAfterSpreadElement);
                    }
                } else if (!(match(']') || matchKeyword('for') || matchKeyword('if'))) {
                    expect(','); // this lexes.
                    possiblecomprehension = false;
                }
            }
        }

        expect(']');

        if (filter && !blocks.length) {
            throwError({}, Messages.ComprehensionRequiresBlock);
        }

        if (blocks.length) {
            if (elements.length !== 1) {
                throwError({}, Messages.ComprehensionError);
            }
            return markerApply(marker, delegate.createComprehensionExpression(filter, blocks, elements[0]));
        }
        return markerApply(marker, delegate.createArrayExpression(elements));
    }

    // 11.1.5 Object Initialiser

    function parsePropertyFunction(options) {
        var previousStrict, previousYieldAllowed, previousAwaitAllowed,
            params, defaults, body, marker = markerCreate();

        previousStrict = strict;
        previousYieldAllowed = state.yieldAllowed;
        state.yieldAllowed = options.generator;
        previousAwaitAllowed = state.awaitAllowed;
        state.awaitAllowed = options.async;
        params = options.params || [];
        defaults = options.defaults || [];

        body = parseConciseBody();
        if (options.name && strict && isRestrictedWord(params[0].name)) {
            throwErrorTolerant(options.name, Messages.StrictParamName);
        }
        strict = previousStrict;
        state.yieldAllowed = previousYieldAllowed;
        state.awaitAllowed = previousAwaitAllowed;

        return markerApply(marker, delegate.createFunctionExpression(
            null,
            params,
            defaults,
            body,
            options.rest || null,
            options.generator,
            body.type !== Syntax.BlockStatement,
            options.async,
            options.returnType,
            options.typeParameters
        ));
    }


    function parsePropertyMethodFunction(options) {
        var previousStrict, tmp, method;

        previousStrict = strict;
        strict = true;

        tmp = parseParams();

        if (tmp.stricted) {
            throwErrorTolerant(tmp.stricted, tmp.message);
        }

        method = parsePropertyFunction({
            params: tmp.params,
            defaults: tmp.defaults,
            rest: tmp.rest,
            generator: options.generator,
            async: options.async,
            returnType: tmp.returnType,
            typeParameters: options.typeParameters
        });

        strict = previousStrict;

        return method;
    }


    function parseObjectPropertyKey() {
        var marker = markerCreate(),
            token = lex(),
            propertyKey,
            result;

        // Note: This function is called only from parseObjectProperty(), where
        // EOF and Punctuator tokens are already filtered out.

        if (token.type === Token.StringLiteral || token.type === Token.NumericLiteral) {
            if (strict && token.octal) {
                throwErrorTolerant(token, Messages.StrictOctalLiteral);
            }
            return markerApply(marker, delegate.createLiteral(token));
        }

        if (token.type === Token.Punctuator && token.value === '[') {
            // For computed properties we should skip the [ and ], and
            // capture in marker only the assignment expression itself.
            marker = markerCreate();
            propertyKey = parseAssignmentExpression();
            result = markerApply(marker, propertyKey);
            expect(']');
            return result;
        }

        return markerApply(marker, delegate.createIdentifier(token.value));
    }

    function parseObjectProperty() {
        var token, key, id, value, param, expr, computed,
            marker = markerCreate(), returnType;

        token = lookahead;
        computed = (token.value === '[');

        if (token.type === Token.Identifier || computed || matchAsync()) {
            id = parseObjectPropertyKey();

            if (match(':')) {
                lex();

                return markerApply(
                    marker,
                    delegate.createProperty(
                        'init',
                        id,
                        parseAssignmentExpression(),
                        false,
                        false,
                        computed
                    )
                );
            }

            if (match('(')) {
                return markerApply(
                    marker,
                    delegate.createProperty(
                        'init',
                        id,
                        parsePropertyMethodFunction({
                            generator: false,
                            async: false
                        }),
                        true,
                        false,
                        computed
                    )
                );
            }

            // Property Assignment: Getter and Setter.

            if (token.value === 'get') {
                computed = (lookahead.value === '[');
                key = parseObjectPropertyKey();

                expect('(');
                expect(')');
                if (match(':')) {
                    returnType = parseTypeAnnotation();
                }

                return markerApply(
                    marker,
                    delegate.createProperty(
                        'get',
                        key,
                        parsePropertyFunction({
                            generator: false,
                            async: false,
                            returnType: returnType
                        }),
                        false,
                        false,
                        computed
                    )
                );
            }

            if (token.value === 'set') {
                computed = (lookahead.value === '[');
                key = parseObjectPropertyKey();

                expect('(');
                token = lookahead;
                param = [ parseTypeAnnotatableIdentifier() ];
                expect(')');
                if (match(':')) {
                    returnType = parseTypeAnnotation();
                }

                return markerApply(
                    marker,
                    delegate.createProperty(
                        'set',
                        key,
                        parsePropertyFunction({
                            params: param,
                            generator: false,
                            async: false,
                            name: token,
                            returnType: returnType
                        }),
                        false,
                        false,
                        computed
                    )
                );
            }

            if (token.value === 'async') {
                computed = (lookahead.value === '[');
                key = parseObjectPropertyKey();

                return markerApply(
                    marker,
                    delegate.createProperty(
                        'init',
                        key,
                        parsePropertyMethodFunction({
                            generator: false,
                            async: true
                        }),
                        true,
                        false,
                        computed
                    )
                );
            }

            if (computed) {
                // Computed properties can only be used with full notation.
                throwUnexpected(lookahead);
            }

            return markerApply(
                marker,
                delegate.createProperty('init', id, id, false, true, false)
            );
        }

        if (token.type === Token.EOF || token.type === Token.Punctuator) {
            if (!match('*')) {
                throwUnexpected(token);
            }
            lex();

            computed = (lookahead.type === Token.Punctuator && lookahead.value === '[');

            id = parseObjectPropertyKey();

            if (!match('(')) {
                throwUnexpected(lex());
            }

            return markerApply(marker, delegate.createProperty('init', id, parsePropertyMethodFunction({ generator: true }), true, false, computed));
        }
        key = parseObjectPropertyKey();
        if (match(':')) {
            lex();
            return markerApply(marker, delegate.createProperty('init', key, parseAssignmentExpression(), false, false, false));
        }
        if (match('(')) {
            return markerApply(marker, delegate.createProperty('init', key, parsePropertyMethodFunction({ generator: false }), true, false, false));
        }
        throwUnexpected(lex());
    }

    function parseObjectSpreadProperty() {
        var marker = markerCreate();
        expect('...');
        return markerApply(marker, delegate.createSpreadProperty(parseAssignmentExpression()));
    }

    function parseObjectInitialiser() {
        var properties = [], property, name, key, kind, map = {}, toString = String,
            marker = markerCreate();

        expect('{');

        while (!match('}')) {
            if (match('...')) {
                property = parseObjectSpreadProperty();
            } else {
                property = parseObjectProperty();

                if (property.key.type === Syntax.Identifier) {
                    name = property.key.name;
                } else {
                    name = toString(property.key.value);
                }
                kind = (property.kind === 'init') ? PropertyKind.Data : (property.kind === 'get') ? PropertyKind.Get : PropertyKind.Set;

                key = '$' + name;
                if (Object.prototype.hasOwnProperty.call(map, key)) {
                    if (map[key] === PropertyKind.Data) {
                        if (strict && kind === PropertyKind.Data) {
                            throwErrorTolerant({}, Messages.StrictDuplicateProperty);
                        } else if (kind !== PropertyKind.Data) {
                            throwErrorTolerant({}, Messages.AccessorDataProperty);
                        }
                    } else {
                        if (kind === PropertyKind.Data) {
                            throwErrorTolerant({}, Messages.AccessorDataProperty);
                        } else if (map[key] & kind) {
                            throwErrorTolerant({}, Messages.AccessorGetSet);
                        }
                    }
                    map[key] |= kind;
                } else {
                    map[key] = kind;
                }
            }

            properties.push(property);

            if (!match('}')) {
                expect(',');
            }
        }

        expect('}');

        return markerApply(marker, delegate.createObjectExpression(properties));
    }

    function parseTemplateElement(option) {
        var marker = markerCreate(),
            token = scanTemplateElement(option);
        if (strict && token.octal) {
            throwError(token, Messages.StrictOctalLiteral);
        }
        return markerApply(marker, delegate.createTemplateElement({ raw: token.value.raw, cooked: token.value.cooked }, token.tail));
    }

    function parseTemplateLiteral() {
        var quasi, quasis, expressions, marker = markerCreate();

        quasi = parseTemplateElement({ head: true });
        quasis = [ quasi ];
        expressions = [];

        while (!quasi.tail) {
            expressions.push(parseExpression());
            quasi = parseTemplateElement({ head: false });
            quasis.push(quasi);
        }

        return markerApply(marker, delegate.createTemplateLiteral(quasis, expressions));
    }

    // 11.1.6 The Grouping Operator

    function parseGroupExpression() {
        var expr;

        expect('(');

        ++state.parenthesizedCount;

        expr = parseExpression();

        expect(')');

        return expr;
    }

    function matchAsyncFuncExprOrDecl() {
        var token;

        if (matchAsync()) {
            token = lookahead2();
            if (token.type === Token.Keyword && token.value === 'function') {
                return true;
            }
        }

        return false;
    }

    // 11.1 Primary Expressions

    function parsePrimaryExpression() {
        var marker, type, token, expr;

        type = lookahead.type;

        if (type === Token.Identifier) {
            marker = markerCreate();
            return markerApply(marker, delegate.createIdentifier(lex().value));
        }

        if (type === Token.StringLiteral || type === Token.NumericLiteral) {
            if (strict && lookahead.octal) {
                throwErrorTolerant(lookahead, Messages.StrictOctalLiteral);
            }
            marker = markerCreate();
            return markerApply(marker, delegate.createLiteral(lex()));
        }

        if (type === Token.Keyword) {
            if (matchKeyword('this')) {
                marker = markerCreate();
                lex();
                return markerApply(marker, delegate.createThisExpression());
            }

            if (matchKeyword('function')) {
                return parseFunctionExpression();
            }

            if (matchKeyword('class')) {
                return parseClassExpression();
            }

            if (matchKeyword('super')) {
                marker = markerCreate();
                lex();
                return markerApply(marker, delegate.createIdentifier('super'));
            }
        }

        if (type === Token.BooleanLiteral) {
            marker = markerCreate();
            token = lex();
            token.value = (token.value === 'true');
            return markerApply(marker, delegate.createLiteral(token));
        }

        if (type === Token.NullLiteral) {
            marker = markerCreate();
            token = lex();
            token.value = null;
            return markerApply(marker, delegate.createLiteral(token));
        }

        if (match('[')) {
            return parseArrayInitialiser();
        }

        if (match('{')) {
            return parseObjectInitialiser();
        }

        if (match('(')) {
            return parseGroupExpression();
        }

        if (match('/') || match('/=')) {
            marker = markerCreate();
            return markerApply(marker, delegate.createLiteral(scanRegExp()));
        }

        if (type === Token.Template) {
            return parseTemplateLiteral();
        }

        if (match('<')) {
            return parseXJSElement();
        }

        throwUnexpected(lex());
    }

    // 11.2 Left-Hand-Side Expressions

    function parseArguments() {
        var args = [], arg;

        expect('(');

        if (!match(')')) {
            while (index < length) {
                arg = parseSpreadOrAssignmentExpression();
                args.push(arg);

                if (match(')')) {
                    break;
                } else if (arg.type === Syntax.SpreadElement) {
                    throwError({}, Messages.ElementAfterSpreadElement);
                }

                expect(',');
            }
        }

        expect(')');

        return args;
    }

    function parseSpreadOrAssignmentExpression() {
        if (match('...')) {
            var marker = markerCreate();
            lex();
            return markerApply(marker, delegate.createSpreadElement(parseAssignmentExpression()));
        }
        return parseAssignmentExpression();
    }

    function parseNonComputedProperty() {
        var marker = markerCreate(),
            token = lex();

        if (!isIdentifierName(token)) {
            throwUnexpected(token);
        }

        return markerApply(marker, delegate.createIdentifier(token.value));
    }

    function parseNonComputedMember() {
        expect('.');

        return parseNonComputedProperty();
    }

    function parseComputedMember() {
        var expr;

        expect('[');

        expr = parseExpression();

        expect(']');

        return expr;
    }

    function parseNewExpression() {
        var callee, args, marker = markerCreate();

        expectKeyword('new');
        callee = parseLeftHandSideExpression();
        args = match('(') ? parseArguments() : [];

        return markerApply(marker, delegate.createNewExpression(callee, args));
    }

    function parseLeftHandSideExpressionAllowCall() {
        var expr, args, marker = markerCreate();

        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();

        while (match('.') || match('[') || match('(') || lookahead.type === Token.Template) {
            if (match('(')) {
                args = parseArguments();
                expr = markerApply(marker, delegate.createCallExpression(expr, args));
            } else if (match('[')) {
                expr = markerApply(marker, delegate.createMemberExpression('[', expr, parseComputedMember()));
            } else if (match('.')) {
                expr = markerApply(marker, delegate.createMemberExpression('.', expr, parseNonComputedMember()));
            } else {
                expr = markerApply(marker, delegate.createTaggedTemplateExpression(expr, parseTemplateLiteral()));
            }
        }

        return expr;
    }

    function parseLeftHandSideExpression() {
        var expr, marker = markerCreate();

        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();

        while (match('.') || match('[') || lookahead.type === Token.Template) {
            if (match('[')) {
                expr = markerApply(marker, delegate.createMemberExpression('[', expr, parseComputedMember()));
            } else if (match('.')) {
                expr = markerApply(marker, delegate.createMemberExpression('.', expr, parseNonComputedMember()));
            } else {
                expr = markerApply(marker, delegate.createTaggedTemplateExpression(expr, parseTemplateLiteral()));
            }
        }

        return expr;
    }

    // 11.3 Postfix Expressions

    function parsePostfixExpression() {
        var marker = markerCreate(),
            expr = parseLeftHandSideExpressionAllowCall(),
            token;

        if (lookahead.type !== Token.Punctuator) {
            return expr;
        }

        if ((match('++') || match('--')) && !peekLineTerminator()) {
            // 11.3.1, 11.3.2
            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
                throwErrorTolerant({}, Messages.StrictLHSPostfix);
            }

            if (!isLeftHandSide(expr)) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }

            token = lex();
            expr = markerApply(marker, delegate.createPostfixExpression(token.value, expr));
        }

        return expr;
    }

    // 11.4 Unary Operators

    function parseUnaryExpression() {
        var marker, token, expr;

        if (lookahead.type !== Token.Punctuator && lookahead.type !== Token.Keyword) {
            return parsePostfixExpression();
        }

        if (match('++') || match('--')) {
            marker = markerCreate();
            token = lex();
            expr = parseUnaryExpression();
            // 11.4.4, 11.4.5
            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
                throwErrorTolerant({}, Messages.StrictLHSPrefix);
            }

            if (!isLeftHandSide(expr)) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }

            return markerApply(marker, delegate.createUnaryExpression(token.value, expr));
        }

        if (match('+') || match('-') || match('~') || match('!')) {
            marker = markerCreate();
            token = lex();
            expr = parseUnaryExpression();
            return markerApply(marker, delegate.createUnaryExpression(token.value, expr));
        }

        if (matchKeyword('delete') || matchKeyword('void') || matchKeyword('typeof')) {
            marker = markerCreate();
            token = lex();
            expr = parseUnaryExpression();
            expr = markerApply(marker, delegate.createUnaryExpression(token.value, expr));
            if (strict && expr.operator === 'delete' && expr.argument.type === Syntax.Identifier) {
                throwErrorTolerant({}, Messages.StrictDelete);
            }
            return expr;
        }

        return parsePostfixExpression();
    }

    function binaryPrecedence(token, allowIn) {
        var prec = 0;

        if (token.type !== Token.Punctuator && token.type !== Token.Keyword) {
            return 0;
        }

        switch (token.value) {
        case '||':
            prec = 1;
            break;

        case '&&':
            prec = 2;
            break;

        case '|':
            prec = 3;
            break;

        case '^':
            prec = 4;
            break;

        case '&':
            prec = 5;
            break;

        case '==':
        case '!=':
        case '===':
        case '!==':
            prec = 6;
            break;

        case '<':
        case '>':
        case '<=':
        case '>=':
        case 'instanceof':
            prec = 7;
            break;

        case 'in':
            prec = allowIn ? 7 : 0;
            break;

        case '<<':
        case '>>':
        case '>>>':
            prec = 8;
            break;

        case '+':
        case '-':
            prec = 9;
            break;

        case '*':
        case '/':
        case '%':
            prec = 11;
            break;

        default:
            break;
        }

        return prec;
    }

    // 11.5 Multiplicative Operators
    // 11.6 Additive Operators
    // 11.7 Bitwise Shift Operators
    // 11.8 Relational Operators
    // 11.9 Equality Operators
    // 11.10 Binary Bitwise Operators
    // 11.11 Binary Logical Operators

    function parseBinaryExpression() {
        var expr, token, prec, previousAllowIn, stack, right, operator, left, i,
            marker, markers;

        previousAllowIn = state.allowIn;
        state.allowIn = true;

        marker = markerCreate();
        left = parseUnaryExpression();

        token = lookahead;
        prec = binaryPrecedence(token, previousAllowIn);
        if (prec === 0) {
            return left;
        }
        token.prec = prec;
        lex();

        markers = [marker, markerCreate()];
        right = parseUnaryExpression();

        stack = [left, token, right];

        while ((prec = binaryPrecedence(lookahead, previousAllowIn)) > 0) {

            // Reduce: make a binary expression from the three topmost entries.
            while ((stack.length > 2) && (prec <= stack[stack.length - 2].prec)) {
                right = stack.pop();
                operator = stack.pop().value;
                left = stack.pop();
                expr = delegate.createBinaryExpression(operator, left, right);
                markers.pop();
                marker = markers.pop();
                markerApply(marker, expr);
                stack.push(expr);
                markers.push(marker);
            }

            // Shift.
            token = lex();
            token.prec = prec;
            stack.push(token);
            markers.push(markerCreate());
            expr = parseUnaryExpression();
            stack.push(expr);
        }

        state.allowIn = previousAllowIn;

        // Final reduce to clean-up the stack.
        i = stack.length - 1;
        expr = stack[i];
        markers.pop();
        while (i > 1) {
            expr = delegate.createBinaryExpression(stack[i - 1].value, stack[i - 2], expr);
            i -= 2;
            marker = markers.pop();
            markerApply(marker, expr);
        }

        return expr;
    }


    // 11.12 Conditional Operator

    function parseConditionalExpression() {
        var expr, previousAllowIn, consequent, alternate, marker = markerCreate();
        expr = parseBinaryExpression();

        if (match('?')) {
            lex();
            previousAllowIn = state.allowIn;
            state.allowIn = true;
            consequent = parseAssignmentExpression();
            state.allowIn = previousAllowIn;
            expect(':');
            alternate = parseAssignmentExpression();

            expr = markerApply(marker, delegate.createConditionalExpression(expr, consequent, alternate));
        }

        return expr;
    }

    // 11.13 Assignment Operators

    function reinterpretAsAssignmentBindingPattern(expr) {
        var i, len, property, element;

        if (expr.type === Syntax.ObjectExpression) {
            expr.type = Syntax.ObjectPattern;
            for (i = 0, len = expr.properties.length; i < len; i += 1) {
                property = expr.properties[i];
                if (property.type === Syntax.SpreadProperty) {
                    if (i < len - 1) {
                        throwError({}, Messages.PropertyAfterSpreadProperty);
                    }
                    reinterpretAsAssignmentBindingPattern(property.argument);
                } else {
                    if (property.kind !== 'init') {
                        throwError({}, Messages.InvalidLHSInAssignment);
                    }
                    reinterpretAsAssignmentBindingPattern(property.value);
                }
            }
        } else if (expr.type === Syntax.ArrayExpression) {
            expr.type = Syntax.ArrayPattern;
            for (i = 0, len = expr.elements.length; i < len; i += 1) {
                element = expr.elements[i];
                if (element) {
                    reinterpretAsAssignmentBindingPattern(element);
                }
            }
        } else if (expr.type === Syntax.Identifier) {
            if (isRestrictedWord(expr.name)) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }
        } else if (expr.type === Syntax.SpreadElement) {
            reinterpretAsAssignmentBindingPattern(expr.argument);
            if (expr.argument.type === Syntax.ObjectPattern) {
                throwError({}, Messages.ObjectPatternAsSpread);
            }
        } else {
            if (expr.type !== Syntax.MemberExpression && expr.type !== Syntax.CallExpression && expr.type !== Syntax.NewExpression) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }
        }
    }


    function reinterpretAsDestructuredParameter(options, expr) {
        var i, len, property, element;

        if (expr.type === Syntax.ObjectExpression) {
            expr.type = Syntax.ObjectPattern;
            for (i = 0, len = expr.properties.length; i < len; i += 1) {
                property = expr.properties[i];
                if (property.type === Syntax.SpreadProperty) {
                    if (i < len - 1) {
                        throwError({}, Messages.PropertyAfterSpreadProperty);
                    }
                    reinterpretAsDestructuredParameter(options, property.argument);
                } else {
                    if (property.kind !== 'init') {
                        throwError({}, Messages.InvalidLHSInFormalsList);
                    }
                    reinterpretAsDestructuredParameter(options, property.value);
                }
            }
        } else if (expr.type === Syntax.ArrayExpression) {
            expr.type = Syntax.ArrayPattern;
            for (i = 0, len = expr.elements.length; i < len; i += 1) {
                element = expr.elements[i];
                if (element) {
                    reinterpretAsDestructuredParameter(options, element);
                }
            }
        } else if (expr.type === Syntax.Identifier) {
            validateParam(options, expr, expr.name);
        } else {
            if (expr.type !== Syntax.MemberExpression) {
                throwError({}, Messages.InvalidLHSInFormalsList);
            }
        }
    }

    function reinterpretAsCoverFormalsList(expressions) {
        var i, len, param, params, defaults, defaultCount, options, rest;

        params = [];
        defaults = [];
        defaultCount = 0;
        rest = null;
        options = {
            paramSet: {}
        };

        for (i = 0, len = expressions.length; i < len; i += 1) {
            param = expressions[i];
            if (param.type === Syntax.Identifier) {
                params.push(param);
                defaults.push(null);
                validateParam(options, param, param.name);
            } else if (param.type === Syntax.ObjectExpression || param.type === Syntax.ArrayExpression) {
                reinterpretAsDestructuredParameter(options, param);
                params.push(param);
                defaults.push(null);
            } else if (param.type === Syntax.SpreadElement) {
                assert(i === len - 1, 'It is guaranteed that SpreadElement is last element by parseExpression');
                reinterpretAsDestructuredParameter(options, param.argument);
                rest = param.argument;
            } else if (param.type === Syntax.AssignmentExpression) {
                params.push(param.left);
                defaults.push(param.right);
                ++defaultCount;
                validateParam(options, param.left, param.left.name);
            } else {
                return null;
            }
        }

        if (options.message === Messages.StrictParamDupe) {
            throwError(
                strict ? options.stricted : options.firstRestricted,
                options.message
            );
        }

        if (defaultCount === 0) {
            defaults = [];
        }

        return {
            params: params,
            defaults: defaults,
            rest: rest,
            stricted: options.stricted,
            firstRestricted: options.firstRestricted,
            message: options.message
        };
    }

    function parseArrowFunctionExpression(options, marker) {
        var previousStrict, previousYieldAllowed, previousAwaitAllowed, body;

        expect('=>');

        previousStrict = strict;
        previousYieldAllowed = state.yieldAllowed;
        state.yieldAllowed = false;
        previousAwaitAllowed = state.awaitAllowed;
        state.awaitAllowed = !!options.async;
        body = parseConciseBody();

        if (strict && options.firstRestricted) {
            throwError(options.firstRestricted, options.message);
        }
        if (strict && options.stricted) {
            throwErrorTolerant(options.stricted, options.message);
        }

        strict = previousStrict;
        state.yieldAllowed = previousYieldAllowed;
        state.awaitAllowed = previousAwaitAllowed;

        return markerApply(marker, delegate.createArrowFunctionExpression(
            options.params,
            options.defaults,
            body,
            options.rest,
            body.type !== Syntax.BlockStatement,
            !!options.async
        ));
    }

    function parseAssignmentExpression() {
        var marker, expr, token, params, oldParenthesizedCount,
            backtrackToken = lookahead, possiblyAsync = false;

        if (matchYield()) {
            return parseYieldExpression();
        }

        if (matchAwait()) {
            return parseAwaitExpression();
        }

        oldParenthesizedCount = state.parenthesizedCount;

        marker = markerCreate();

        if (matchAsyncFuncExprOrDecl()) {
            return parseFunctionExpression();
        }

        if (matchAsync()) {
            // We can't be completely sure that this 'async' token is
            // actually a contextual keyword modifying a function
            // expression, so we might have to un-lex() it later by
            // calling rewind(backtrackToken).
            possiblyAsync = true;
            lex();
        }

        if (match('(')) {
            token = lookahead2();
            if ((token.type === Token.Punctuator && token.value === ')') || token.value === '...') {
                params = parseParams();
                if (!match('=>')) {
                    throwUnexpected(lex());
                }
                params.async = possiblyAsync;
                return parseArrowFunctionExpression(params, marker);
            }
        }

        token = lookahead;

        // If the 'async' keyword is not followed by a '(' character or an
        // identifier, then it can't be an arrow function modifier, and we
        // should interpret it as a normal identifer.
        if (possiblyAsync && !match('(') && token.type !== Token.Identifier) {
            possiblyAsync = false;
            rewind(backtrackToken);
        }

        expr = parseConditionalExpression();

        if (match('=>') &&
                (state.parenthesizedCount === oldParenthesizedCount ||
                state.parenthesizedCount === (oldParenthesizedCount + 1))) {
            if (expr.type === Syntax.Identifier) {
                params = reinterpretAsCoverFormalsList([ expr ]);
            } else if (expr.type === Syntax.SequenceExpression) {
                params = reinterpretAsCoverFormalsList(expr.expressions);
            }
            if (params) {
                params.async = possiblyAsync;
                return parseArrowFunctionExpression(params, marker);
            }
        }

        // If we haven't returned by now, then the 'async' keyword was not
        // a function modifier, and we should rewind and interpret it as a
        // normal identifier.
        if (possiblyAsync) {
            possiblyAsync = false;
            rewind(backtrackToken);
            expr = parseConditionalExpression();
        }

        if (matchAssign()) {
            // 11.13.1
            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
                throwErrorTolerant(token, Messages.StrictLHSAssignment);
            }

            // ES.next draf 11.13 Runtime Semantics step 1
            if (match('=') && (expr.type === Syntax.ObjectExpression || expr.type === Syntax.ArrayExpression)) {
                reinterpretAsAssignmentBindingPattern(expr);
            } else if (!isLeftHandSide(expr)) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }

            expr = markerApply(marker, delegate.createAssignmentExpression(lex().value, expr, parseAssignmentExpression()));
        }

        return expr;
    }

    // 11.14 Comma Operator

    function parseExpression() {
        var marker, expr, expressions, sequence, coverFormalsList, spreadFound, oldParenthesizedCount;

        oldParenthesizedCount = state.parenthesizedCount;

        marker = markerCreate();
        expr = parseAssignmentExpression();
        expressions = [ expr ];

        if (match(',')) {
            while (index < length) {
                if (!match(',')) {
                    break;
                }

                lex();
                expr = parseSpreadOrAssignmentExpression();
                expressions.push(expr);

                if (expr.type === Syntax.SpreadElement) {
                    spreadFound = true;
                    if (!match(')')) {
                        throwError({}, Messages.ElementAfterSpreadElement);
                    }
                    break;
                }
            }

            sequence = markerApply(marker, delegate.createSequenceExpression(expressions));
        }

        if (match('=>')) {
            // Do not allow nested parentheses on the LHS of the =>.
            if (state.parenthesizedCount === oldParenthesizedCount || state.parenthesizedCount === (oldParenthesizedCount + 1)) {
                expr = expr.type === Syntax.SequenceExpression ? expr.expressions : expressions;
                coverFormalsList = reinterpretAsCoverFormalsList(expr);
                if (coverFormalsList) {
                    return parseArrowFunctionExpression(coverFormalsList, marker);
                }
            }
            throwUnexpected(lex());
        }

        if (spreadFound && lookahead2().value !== '=>') {
            throwError({}, Messages.IllegalSpread);
        }

        return sequence || expr;
    }

    // 12.1 Block

    function parseStatementList() {
        var list = [],
            statement;

        while (index < length) {
            if (match('}')) {
                break;
            }
            statement = parseSourceElement();
            if (typeof statement === 'undefined') {
                break;
            }
            list.push(statement);
        }

        return list;
    }

    function parseBlock() {
        var block, marker = markerCreate();

        expect('{');

        block = parseStatementList();

        expect('}');

        return markerApply(marker, delegate.createBlockStatement(block));
    }

    // 12.2 Variable Statement

    function parseTypeParameterDeclaration() {
        var marker = markerCreate(), paramTypes = [];

        expect('<');
        while (!match('>')) {
            paramTypes.push(parseVariableIdentifier());
            if (!match('>')) {
                expect(',');
            }
        }
        expect('>');

        return markerApply(marker, delegate.createTypeParameterDeclaration(
            paramTypes
        ));
    }

    function parseTypeParameterInstantiation() {
        var marker = markerCreate(), oldInType = state.inType, paramTypes = [];

        state.inType = true;

        expect('<');
        while (!match('>')) {
            paramTypes.push(parseType());
            if (!match('>')) {
                expect(',');
            }
        }
        expect('>');

        state.inType = oldInType;

        return markerApply(marker, delegate.createTypeParameterInstantiation(
            paramTypes
        ));
    }

    function parseObjectTypeIndexer(marker, isStatic) {
        var id, key, value;

        expect('[');
        id = parseObjectPropertyKey();
        expect(':');
        key = parseType();
        expect(']');
        expect(':');
        value = parseType();

        return markerApply(marker, delegate.createObjectTypeIndexer(
            id,
            key,
            value,
            isStatic
        ));
    }

    function parseObjectTypeMethodish(marker) {
        var params = [], rest = null, returnType, typeParameters = null;
        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        expect('(');
        while (lookahead.type === Token.Identifier) {
            params.push(parseFunctionTypeParam());
            if (!match(')')) {
                expect(',');
            }
        }

        if (match('...')) {
            lex();
            rest = parseFunctionTypeParam();
        }
        expect(')');
        expect(':');
        returnType = parseType();

        return markerApply(marker, delegate.createFunctionTypeAnnotation(
            params,
            returnType,
            rest,
            typeParameters
        ));
    }

    function parseObjectTypeMethod(marker, isStatic, key) {
        var optional = false, value;
        value = parseObjectTypeMethodish(marker);

        return markerApply(marker, delegate.createObjectTypeProperty(
            key,
            value,
            optional,
            isStatic
        ));
    }

    function parseObjectTypeCallProperty(marker, isStatic) {
        var valueMarker = markerCreate();
        return markerApply(marker, delegate.createObjectTypeCallProperty(
            parseObjectTypeMethodish(valueMarker),
            isStatic
        ));
    }

    function parseObjectType(allowStatic) {
        var callProperties = [], indexers = [], marker, optional = false,
            properties = [], property, propertyKey, propertyTypeAnnotation,
            token, isStatic;

        expect('{');

        while (!match('}')) {
            marker = markerCreate();
            if (allowStatic && matchContextualKeyword('static')) {
                token = lex();
                isStatic = true;
            }

            if (match('[')) {
                indexers.push(parseObjectTypeIndexer(marker, isStatic));
            } else if (match('(') || match('<')) {
                callProperties.push(parseObjectTypeCallProperty(marker, allowStatic));
            } else {
                if (isStatic && match(':')) {
                    propertyKey = markerApply(marker, delegate.createIdentifier(token));
                    throwErrorTolerant(token, Messages.StrictReservedWord);
                } else {
                    propertyKey = parseObjectPropertyKey();
                }
                if (match('<') || match('(')) {
                    // This is a method property
                    properties.push(parseObjectTypeMethod(marker, isStatic, propertyKey));
                } else {
                    if (match('?')) {
                        lex();
                        optional = true;
                    }
                    expect(':');
                    propertyTypeAnnotation = parseType();
                    properties.push(markerApply(marker, delegate.createObjectTypeProperty(
                        propertyKey,
                        propertyTypeAnnotation,
                        optional,
                        isStatic
                    )));
                }
            }

            if (match(';')) {
                lex();
            } else if (!match('}')) {
                throwUnexpected(lookahead);
            }
        }

        expect('}');

        return delegate.createObjectTypeAnnotation(
            properties,
            indexers,
            callProperties
        );
    }

    function parseGenericType() {
        var marker = markerCreate(), returnType = null,
            typeParameters = null, typeIdentifier,
            typeIdentifierMarker = markerCreate;

        typeIdentifier = parseVariableIdentifier();

        while (match('.')) {
            expect('.');
            typeIdentifier = markerApply(marker, delegate.createQualifiedTypeIdentifier(
                typeIdentifier,
                parseVariableIdentifier()
            ));
        }

        if (match('<')) {
            typeParameters = parseTypeParameterInstantiation();
        }

        return markerApply(marker, delegate.createGenericTypeAnnotation(
            typeIdentifier,
            typeParameters
        ));
    }

    function parseVoidType() {
        var marker = markerCreate();
        expectKeyword('void');
        return markerApply(marker, delegate.createVoidTypeAnnotation());
    }

    function parseTypeofType() {
        var argument, marker = markerCreate();
        expectKeyword('typeof');
        argument = parsePrimaryType();
        return markerApply(marker, delegate.createTypeofTypeAnnotation(
            argument
        ));
    }

    function parseTupleType() {
        var marker = markerCreate(), types = [];
        expect('[');
        // We allow trailing commas
        while (index < length && !match(']')) {
            types.push(parseType());
            if (match(']')) {
                break;
            }
            expect(',');
        }
        expect(']');
        return markerApply(marker, delegate.createTupleTypeAnnotation(
            types
        ));
    }

    function parseFunctionTypeParam() {
        var marker = markerCreate(), name, optional = false, typeAnnotation;
        name = parseVariableIdentifier();
        if (match('?')) {
            lex();
            optional = true;
        }
        expect(':');
        typeAnnotation = parseType();
        return markerApply(marker, delegate.createFunctionTypeParam(
            name,
            typeAnnotation,
            optional
        ));
    }

    function parseFunctionTypeParams() {
        var ret = { params: [], rest: null };
        while (lookahead.type === Token.Identifier) {
            ret.params.push(parseFunctionTypeParam());
            if (!match(')')) {
                expect(',');
            }
        }

        if (match('...')) {
            lex();
            ret.rest = parseFunctionTypeParam();
        }
        return ret;
    }

    // The parsing of types roughly parallels the parsing of expressions, and
    // primary types are kind of like primary expressions...they're the
    // primitives with which other types are constructed.
    function parsePrimaryType() {
        var typeIdentifier = null, params = null, returnType = null,
            marker = markerCreate(), rest = null, tmp,
            typeParameters, token, type, isGroupedType = false;

        switch (lookahead.type) {
        case Token.Identifier:
            switch (lookahead.value) {
            case 'any':
                lex();
                return markerApply(marker, delegate.createAnyTypeAnnotation());
            case 'bool':  // fallthrough
            case 'boolean':
                lex();
                return markerApply(marker, delegate.createBooleanTypeAnnotation());
            case 'number':
                lex();
                return markerApply(marker, delegate.createNumberTypeAnnotation());
            case 'string':
                lex();
                return markerApply(marker, delegate.createStringTypeAnnotation());
            }
            return markerApply(marker, parseGenericType());
        case Token.Punctuator:
            switch (lookahead.value) {
            case '{':
                return markerApply(marker, parseObjectType());
            case '[':
                return parseTupleType();
            case '<':
                typeParameters = parseTypeParameterDeclaration();
                expect('(');
                tmp = parseFunctionTypeParams();
                params = tmp.params;
                rest = tmp.rest;
                expect(')');

                expect('=>');

                returnType = parseType();

                return markerApply(marker, delegate.createFunctionTypeAnnotation(
                    params,
                    returnType,
                    rest,
                    typeParameters
                ));
            case '(':
                lex();
                // Check to see if this is actually a grouped type
                if (!match(')') && !match('...')) {
                    if (lookahead.type === Token.Identifier) {
                        token = lookahead2();
                        isGroupedType = token.value !== '?' && token.value !== ':';
                    } else {
                        isGroupedType = true;
                    }
                }

                if (isGroupedType) {
                    type = parseType();
                    expect(')');

                    // If we see a => next then someone was probably confused about
                    // function types, so we can provide a better error message
                    if (match('=>')) {
                        throwError({}, Messages.ConfusedAboutFunctionType);
                    }

                    return type;
                }

                tmp = parseFunctionTypeParams();
                params = tmp.params;
                rest = tmp.rest;

                expect(')');

                expect('=>');

                returnType = parseType();

                return markerApply(marker, delegate.createFunctionTypeAnnotation(
                    params,
                    returnType,
                    rest,
                    null /* typeParameters */
                ));
            }
            break;
        case Token.Keyword:
            switch (lookahead.value) {
            case 'void':
                return markerApply(marker, parseVoidType());
            case 'typeof':
                return markerApply(marker, parseTypeofType());
            }
            break;
        case Token.StringLiteral:
            token = lex();
            if (token.octal) {
                throwError(token, Messages.StrictOctalLiteral);
            }
            return markerApply(marker, delegate.createStringLiteralTypeAnnotation(
                token
            ));
        }

        throwUnexpected(lookahead);
    }

    function parsePostfixType() {
        var marker = markerCreate(), t = parsePrimaryType();
        if (match('[')) {
            expect('[');
            expect(']');
            return markerApply(marker, delegate.createArrayTypeAnnotation(t));
        }
        return t;
    }

    function parsePrefixType() {
        var marker = markerCreate();
        if (match('?')) {
            lex();
            return markerApply(marker, delegate.createNullableTypeAnnotation(
                parsePrefixType()
            ));
        }
        return parsePostfixType();
    }


    function parseIntersectionType() {
        var marker = markerCreate(), type, types;
        type = parsePrefixType();
        types = [type];
        while (match('&')) {
            lex();
            types.push(parsePrefixType());
        }

        return types.length === 1 ?
                type :
                markerApply(marker, delegate.createIntersectionTypeAnnotation(
                    types
                ));
    }

    function parseUnionType() {
        var marker = markerCreate(), type, types;
        type = parseIntersectionType();
        types = [type];
        while (match('|')) {
            lex();
            types.push(parseIntersectionType());
        }
        return types.length === 1 ?
                type :
                markerApply(marker, delegate.createUnionTypeAnnotation(
                    types
                ));
    }

    function parseType() {
        var oldInType = state.inType, type;
        state.inType = true;

        type = parseUnionType();

        state.inType = oldInType;
        return type;
    }

    function parseTypeAnnotation() {
        var marker = markerCreate(), type;

        expect(':');
        type = parseType();

        return markerApply(marker, delegate.createTypeAnnotation(type));
    }

    function parseVariableIdentifier() {
        var marker = markerCreate(),
            token = lex();

        if (token.type !== Token.Identifier) {
            throwUnexpected(token);
        }

        return markerApply(marker, delegate.createIdentifier(token.value));
    }

    function parseTypeAnnotatableIdentifier(requireTypeAnnotation, canBeOptionalParam) {
        var marker = markerCreate(),
            ident = parseVariableIdentifier(),
            isOptionalParam = false;

        if (canBeOptionalParam && match('?')) {
            expect('?');
            isOptionalParam = true;
        }

        if (requireTypeAnnotation || match(':')) {
            ident.typeAnnotation = parseTypeAnnotation();
            ident = markerApply(marker, ident);
        }

        if (isOptionalParam) {
            ident.optional = true;
            ident = markerApply(marker, ident);
        }

        return ident;
    }

    function parseVariableDeclaration(kind) {
        var id,
            marker = markerCreate(),
            init = null,
            typeAnnotationMarker = markerCreate();
        if (match('{')) {
            id = parseObjectInitialiser();
            reinterpretAsAssignmentBindingPattern(id);
            if (match(':')) {
                id.typeAnnotation = parseTypeAnnotation();
                markerApply(typeAnnotationMarker, id);
            }
        } else if (match('[')) {
            id = parseArrayInitialiser();
            reinterpretAsAssignmentBindingPattern(id);
            if (match(':')) {
                id.typeAnnotation = parseTypeAnnotation();
                markerApply(typeAnnotationMarker, id);
            }
        } else {
            id = state.allowKeyword ? parseNonComputedProperty() : parseTypeAnnotatableIdentifier();
            // 12.2.1
            if (strict && isRestrictedWord(id.name)) {
                throwErrorTolerant({}, Messages.StrictVarName);
            }
        }

        if (kind === 'const') {
            if (!match('=')) {
                throwError({}, Messages.NoUnintializedConst);
            }
            expect('=');
            init = parseAssignmentExpression();
        } else if (match('=')) {
            lex();
            init = parseAssignmentExpression();
        }

        return markerApply(marker, delegate.createVariableDeclarator(id, init));
    }

    function parseVariableDeclarationList(kind) {
        var list = [];

        do {
            list.push(parseVariableDeclaration(kind));
            if (!match(',')) {
                break;
            }
            lex();
        } while (index < length);

        return list;
    }

    function parseVariableStatement() {
        var declarations, marker = markerCreate();

        expectKeyword('var');

        declarations = parseVariableDeclarationList();

        consumeSemicolon();

        return markerApply(marker, delegate.createVariableDeclaration(declarations, 'var'));
    }

    // kind may be `const` or `let`
    // Both are experimental and not in the specification yet.
    // see http://wiki.ecmascript.org/doku.php?id=harmony:const
    // and http://wiki.ecmascript.org/doku.php?id=harmony:let
    function parseConstLetDeclaration(kind) {
        var declarations, marker = markerCreate();

        expectKeyword(kind);

        declarations = parseVariableDeclarationList(kind);

        consumeSemicolon();

        return markerApply(marker, delegate.createVariableDeclaration(declarations, kind));
    }

    // people.mozilla.org/~jorendorff/es6-draft.html

    function parseModuleSpecifier() {
        var marker = markerCreate(),
            specifier;

        if (lookahead.type !== Token.StringLiteral) {
            throwError({}, Messages.InvalidModuleSpecifier);
        }
        specifier = delegate.createModuleSpecifier(lookahead);
        lex();
        return markerApply(marker, specifier);
    }

    function parseExportBatchSpecifier() {
        var marker = markerCreate();
        expect('*');
        return markerApply(marker, delegate.createExportBatchSpecifier());
    }

    function parseExportSpecifier() {
        var id, name = null, marker = markerCreate(), from;
        if (matchKeyword('default')) {
            lex();
            id = markerApply(marker, delegate.createIdentifier('default'));
            // export {default} from "something";
        } else {
            id = parseVariableIdentifier();
        }
        if (matchContextualKeyword('as')) {
            lex();
            name = parseNonComputedProperty();
        }

        return markerApply(marker, delegate.createExportSpecifier(id, name));
    }

    function parseExportDeclaration() {
        var backtrackToken, id, previousAllowKeyword, declaration = null,
            isExportFromIdentifier,
            src = null, specifiers = [],
            marker = markerCreate();

        expectKeyword('export');

        if (matchKeyword('default')) {
            // covers:
            // export default ...
            lex();
            if (matchKeyword('function') || matchKeyword('class')) {
                backtrackToken = lookahead;
                lex();
                if (isIdentifierName(lookahead)) {
                    // covers:
                    // export default function foo () {}
                    // export default class foo {}
                    id = parseNonComputedProperty();
                    rewind(backtrackToken);
                    return markerApply(marker, delegate.createExportDeclaration(true, parseSourceElement(), [id], null));
                }
                // covers:
                // export default function () {}
                // export default class {}
                rewind(backtrackToken);
                switch (lookahead.value) {
                case 'class':
                    return markerApply(marker, delegate.createExportDeclaration(true, parseClassExpression(), [], null));
                case 'function':
                    return markerApply(marker, delegate.createExportDeclaration(true, parseFunctionExpression(), [], null));
                }
            }

            if (matchContextualKeyword('from')) {
                throwError({}, Messages.UnexpectedToken, lookahead.value);
            }

            // covers:
            // export default {};
            // export default [];
            if (match('{')) {
                declaration = parseObjectInitialiser();
            } else if (match('[')) {
                declaration = parseArrayInitialiser();
            } else {
                declaration = parseAssignmentExpression();
            }
            consumeSemicolon();
            return markerApply(marker, delegate.createExportDeclaration(true, declaration, [], null));
        }

        // non-default export
        if (lookahead.type === Token.Keyword) {
            // covers:
            // export var f = 1;
            switch (lookahead.value) {
            case 'let':
            case 'const':
            case 'var':
            case 'class':
            case 'function':
                return markerApply(marker, delegate.createExportDeclaration(false, parseSourceElement(), specifiers, null));
            }
        }

        if (match('*')) {
            // covers:
            // export * from "foo";
            specifiers.push(parseExportBatchSpecifier());

            if (!matchContextualKeyword('from')) {
                throwError({}, lookahead.value ?
                        Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
            }
            lex();
            src = parseModuleSpecifier();
            consumeSemicolon();

            return markerApply(marker, delegate.createExportDeclaration(false, null, specifiers, src));
        }

        expect('{');
        do {
            isExportFromIdentifier = isExportFromIdentifier || matchKeyword('default');
            specifiers.push(parseExportSpecifier());
        } while (match(',') && lex());
        expect('}');

        if (matchContextualKeyword('from')) {
            // covering:
            // export {default} from "foo";
            // export {foo} from "foo";
            lex();
            src = parseModuleSpecifier();
            consumeSemicolon();
        } else if (isExportFromIdentifier) {
            // covering:
            // export {default}; // missing fromClause
            throwError({}, lookahead.value ?
                    Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
        } else {
            // cover
            // export {foo};
            consumeSemicolon();
        }
        return markerApply(marker, delegate.createExportDeclaration(false, declaration, specifiers, src));
    }


    function parseImportSpecifier() {
        // import {<foo as bar>} ...;
        var id, name = null, marker = markerCreate();

        id = parseNonComputedProperty();
        if (matchContextualKeyword('as')) {
            lex();
            name = parseVariableIdentifier();
        }

        return markerApply(marker, delegate.createImportSpecifier(id, name));
    }

    function parseNamedImports() {
        var specifiers = [];
        // {foo, bar as bas}
        expect('{');
        do {
            specifiers.push(parseImportSpecifier());
        } while (match(',') && lex());
        expect('}');
        return specifiers;
    }

    function parseImportDefaultSpecifier() {
        // import <foo> ...;
        var id, marker = markerCreate();

        id = parseNonComputedProperty();

        return markerApply(marker, delegate.createImportDefaultSpecifier(id));
    }

    function parseImportNamespaceSpecifier() {
        // import <* as foo> ...;
        var id, marker = markerCreate();

        expect('*');
        if (!matchContextualKeyword('as')) {
            throwError({}, Messages.NoAsAfterImportNamespace);
        }
        lex();
        id = parseNonComputedProperty();

        return markerApply(marker, delegate.createImportNamespaceSpecifier(id));
    }

    function parseImportDeclaration() {
        var specifiers, src, marker = markerCreate();

        expectKeyword('import');
        specifiers = [];

        if (lookahead.type === Token.StringLiteral) {
            // covers:
            // import "foo";
            src = parseModuleSpecifier();
            consumeSemicolon();
            return markerApply(marker, delegate.createImportDeclaration(specifiers, src));
        }

        if (!matchKeyword('default') && isIdentifierName(lookahead)) {
            // covers:
            // import foo
            // import foo, ...
            specifiers.push(parseImportDefaultSpecifier());
            if (match(',')) {
                lex();
            }
        }
        if (match('*')) {
            // covers:
            // import foo, * as foo
            // import * as foo
            specifiers.push(parseImportNamespaceSpecifier());
        } else if (match('{')) {
            // covers:
            // import foo, {bar}
            // import {bar}
            specifiers = specifiers.concat(parseNamedImports());
        }

        if (!matchContextualKeyword('from')) {
            throwError({}, lookahead.value ?
                    Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
        }
        lex();
        src = parseModuleSpecifier();
        consumeSemicolon();

        return markerApply(marker, delegate.createImportDeclaration(specifiers, src));
    }

    // 12.3 Empty Statement

    function parseEmptyStatement() {
        var marker = markerCreate();
        expect(';');
        return markerApply(marker, delegate.createEmptyStatement());
    }

    // 12.4 Expression Statement

    function parseExpressionStatement() {
        var marker = markerCreate(), expr = parseExpression();
        consumeSemicolon();
        return markerApply(marker, delegate.createExpressionStatement(expr));
    }

    // 12.5 If statement

    function parseIfStatement() {
        var test, consequent, alternate, marker = markerCreate();

        expectKeyword('if');

        expect('(');

        test = parseExpression();

        expect(')');

        consequent = parseStatement();

        if (matchKeyword('else')) {
            lex();
            alternate = parseStatement();
        } else {
            alternate = null;
        }

        return markerApply(marker, delegate.createIfStatement(test, consequent, alternate));
    }

    // 12.6 Iteration Statements

    function parseDoWhileStatement() {
        var body, test, oldInIteration, marker = markerCreate();

        expectKeyword('do');

        oldInIteration = state.inIteration;
        state.inIteration = true;

        body = parseStatement();

        state.inIteration = oldInIteration;

        expectKeyword('while');

        expect('(');

        test = parseExpression();

        expect(')');

        if (match(';')) {
            lex();
        }

        return markerApply(marker, delegate.createDoWhileStatement(body, test));
    }

    function parseWhileStatement() {
        var test, body, oldInIteration, marker = markerCreate();

        expectKeyword('while');

        expect('(');

        test = parseExpression();

        expect(')');

        oldInIteration = state.inIteration;
        state.inIteration = true;

        body = parseStatement();

        state.inIteration = oldInIteration;

        return markerApply(marker, delegate.createWhileStatement(test, body));
    }

    function parseForVariableDeclaration() {
        var marker = markerCreate(),
            token = lex(),
            declarations = parseVariableDeclarationList();

        return markerApply(marker, delegate.createVariableDeclaration(declarations, token.value));
    }

    function parseForStatement(opts) {
        var init, test, update, left, right, body, operator, oldInIteration,
            marker = markerCreate();
        init = test = update = null;
        expectKeyword('for');

        // http://wiki.ecmascript.org/doku.php?id=proposals:iterators_and_generators&s=each
        if (matchContextualKeyword('each')) {
            throwError({}, Messages.EachNotAllowed);
        }

        expect('(');

        if (match(';')) {
            lex();
        } else {
            if (matchKeyword('var') || matchKeyword('let') || matchKeyword('const')) {
                state.allowIn = false;
                init = parseForVariableDeclaration();
                state.allowIn = true;

                if (init.declarations.length === 1) {
                    if (matchKeyword('in') || matchContextualKeyword('of')) {
                        operator = lookahead;
                        if (!((operator.value === 'in' || init.kind !== 'var') && init.declarations[0].init)) {
                            lex();
                            left = init;
                            right = parseExpression();
                            init = null;
                        }
                    }
                }
            } else {
                state.allowIn = false;
                init = parseExpression();
                state.allowIn = true;

                if (matchContextualKeyword('of')) {
                    operator = lex();
                    left = init;
                    right = parseExpression();
                    init = null;
                } else if (matchKeyword('in')) {
                    // LeftHandSideExpression
                    if (!isAssignableLeftHandSide(init)) {
                        throwError({}, Messages.InvalidLHSInForIn);
                    }
                    operator = lex();
                    left = init;
                    right = parseExpression();
                    init = null;
                }
            }

            if (typeof left === 'undefined') {
                expect(';');
            }
        }

        if (typeof left === 'undefined') {

            if (!match(';')) {
                test = parseExpression();
            }
            expect(';');

            if (!match(')')) {
                update = parseExpression();
            }
        }

        expect(')');

        oldInIteration = state.inIteration;
        state.inIteration = true;

        if (!(opts !== undefined && opts.ignoreBody)) {
            body = parseStatement();
        }

        state.inIteration = oldInIteration;

        if (typeof left === 'undefined') {
            return markerApply(marker, delegate.createForStatement(init, test, update, body));
        }

        if (operator.value === 'in') {
            return markerApply(marker, delegate.createForInStatement(left, right, body));
        }
        return markerApply(marker, delegate.createForOfStatement(left, right, body));
    }

    // 12.7 The continue statement

    function parseContinueStatement() {
        var label = null, key, marker = markerCreate();

        expectKeyword('continue');

        // Optimize the most common form: 'continue;'.
        if (source.charCodeAt(index) === 59) {
            lex();

            if (!state.inIteration) {
                throwError({}, Messages.IllegalContinue);
            }

            return markerApply(marker, delegate.createContinueStatement(null));
        }

        if (peekLineTerminator()) {
            if (!state.inIteration) {
                throwError({}, Messages.IllegalContinue);
            }

            return markerApply(marker, delegate.createContinueStatement(null));
        }

        if (lookahead.type === Token.Identifier) {
            label = parseVariableIdentifier();

            key = '$' + label.name;
            if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
                throwError({}, Messages.UnknownLabel, label.name);
            }
        }

        consumeSemicolon();

        if (label === null && !state.inIteration) {
            throwError({}, Messages.IllegalContinue);
        }

        return markerApply(marker, delegate.createContinueStatement(label));
    }

    // 12.8 The break statement

    function parseBreakStatement() {
        var label = null, key, marker = markerCreate();

        expectKeyword('break');

        // Catch the very common case first: immediately a semicolon (char #59).
        if (source.charCodeAt(index) === 59) {
            lex();

            if (!(state.inIteration || state.inSwitch)) {
                throwError({}, Messages.IllegalBreak);
            }

            return markerApply(marker, delegate.createBreakStatement(null));
        }

        if (peekLineTerminator()) {
            if (!(state.inIteration || state.inSwitch)) {
                throwError({}, Messages.IllegalBreak);
            }

            return markerApply(marker, delegate.createBreakStatement(null));
        }

        if (lookahead.type === Token.Identifier) {
            label = parseVariableIdentifier();

            key = '$' + label.name;
            if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
                throwError({}, Messages.UnknownLabel, label.name);
            }
        }

        consumeSemicolon();

        if (label === null && !(state.inIteration || state.inSwitch)) {
            throwError({}, Messages.IllegalBreak);
        }

        return markerApply(marker, delegate.createBreakStatement(label));
    }

    // 12.9 The return statement

    function parseReturnStatement() {
        var argument = null, marker = markerCreate();

        expectKeyword('return');

        if (!state.inFunctionBody) {
            throwErrorTolerant({}, Messages.IllegalReturn);
        }

        // 'return' followed by a space and an identifier is very common.
        if (source.charCodeAt(index) === 32) {
            if (isIdentifierStart(source.charCodeAt(index + 1))) {
                argument = parseExpression();
                consumeSemicolon();
                return markerApply(marker, delegate.createReturnStatement(argument));
            }
        }

        if (peekLineTerminator()) {
            return markerApply(marker, delegate.createReturnStatement(null));
        }

        if (!match(';')) {
            if (!match('}') && lookahead.type !== Token.EOF) {
                argument = parseExpression();
            }
        }

        consumeSemicolon();

        return markerApply(marker, delegate.createReturnStatement(argument));
    }

    // 12.10 The with statement

    function parseWithStatement() {
        var object, body, marker = markerCreate();

        if (strict) {
            throwErrorTolerant({}, Messages.StrictModeWith);
        }

        expectKeyword('with');

        expect('(');

        object = parseExpression();

        expect(')');

        body = parseStatement();

        return markerApply(marker, delegate.createWithStatement(object, body));
    }

    // 12.10 The swith statement

    function parseSwitchCase() {
        var test,
            consequent = [],
            sourceElement,
            marker = markerCreate();

        if (matchKeyword('default')) {
            lex();
            test = null;
        } else {
            expectKeyword('case');
            test = parseExpression();
        }
        expect(':');

        while (index < length) {
            if (match('}') || matchKeyword('default') || matchKeyword('case')) {
                break;
            }
            sourceElement = parseSourceElement();
            if (typeof sourceElement === 'undefined') {
                break;
            }
            consequent.push(sourceElement);
        }

        return markerApply(marker, delegate.createSwitchCase(test, consequent));
    }

    function parseSwitchStatement() {
        var discriminant, cases, clause, oldInSwitch, defaultFound, marker = markerCreate();

        expectKeyword('switch');

        expect('(');

        discriminant = parseExpression();

        expect(')');

        expect('{');

        cases = [];

        if (match('}')) {
            lex();
            return markerApply(marker, delegate.createSwitchStatement(discriminant, cases));
        }

        oldInSwitch = state.inSwitch;
        state.inSwitch = true;
        defaultFound = false;

        while (index < length) {
            if (match('}')) {
                break;
            }
            clause = parseSwitchCase();
            if (clause.test === null) {
                if (defaultFound) {
                    throwError({}, Messages.MultipleDefaultsInSwitch);
                }
                defaultFound = true;
            }
            cases.push(clause);
        }

        state.inSwitch = oldInSwitch;

        expect('}');

        return markerApply(marker, delegate.createSwitchStatement(discriminant, cases));
    }

    // 12.13 The throw statement

    function parseThrowStatement() {
        var argument, marker = markerCreate();

        expectKeyword('throw');

        if (peekLineTerminator()) {
            throwError({}, Messages.NewlineAfterThrow);
        }

        argument = parseExpression();

        consumeSemicolon();

        return markerApply(marker, delegate.createThrowStatement(argument));
    }

    // 12.14 The try statement

    function parseCatchClause() {
        var param, body, marker = markerCreate();

        expectKeyword('catch');

        expect('(');
        if (match(')')) {
            throwUnexpected(lookahead);
        }

        param = parseExpression();
        // 12.14.1
        if (strict && param.type === Syntax.Identifier && isRestrictedWord(param.name)) {
            throwErrorTolerant({}, Messages.StrictCatchVariable);
        }

        expect(')');
        body = parseBlock();
        return markerApply(marker, delegate.createCatchClause(param, body));
    }

    function parseTryStatement() {
        var block, handlers = [], finalizer = null, marker = markerCreate();

        expectKeyword('try');

        block = parseBlock();

        if (matchKeyword('catch')) {
            handlers.push(parseCatchClause());
        }

        if (matchKeyword('finally')) {
            lex();
            finalizer = parseBlock();
        }

        if (handlers.length === 0 && !finalizer) {
            throwError({}, Messages.NoCatchOrFinally);
        }

        return markerApply(marker, delegate.createTryStatement(block, [], handlers, finalizer));
    }

    // 12.15 The debugger statement

    function parseDebuggerStatement() {
        var marker = markerCreate();
        expectKeyword('debugger');

        consumeSemicolon();

        return markerApply(marker, delegate.createDebuggerStatement());
    }

    // 12 Statements

    function parseStatement() {
        var type = lookahead.type,
            marker,
            expr,
            labeledBody,
            key;

        if (type === Token.EOF) {
            throwUnexpected(lookahead);
        }

        if (type === Token.Punctuator) {
            switch (lookahead.value) {
            case ';':
                return parseEmptyStatement();
            case '{':
                return parseBlock();
            case '(':
                return parseExpressionStatement();
            default:
                break;
            }
        }

        if (type === Token.Keyword) {
            switch (lookahead.value) {
            case 'break':
                return parseBreakStatement();
            case 'continue':
                return parseContinueStatement();
            case 'debugger':
                return parseDebuggerStatement();
            case 'do':
                return parseDoWhileStatement();
            case 'for':
                return parseForStatement();
            case 'function':
                return parseFunctionDeclaration();
            case 'class':
                return parseClassDeclaration();
            case 'if':
                return parseIfStatement();
            case 'return':
                return parseReturnStatement();
            case 'switch':
                return parseSwitchStatement();
            case 'throw':
                return parseThrowStatement();
            case 'try':
                return parseTryStatement();
            case 'var':
                return parseVariableStatement();
            case 'while':
                return parseWhileStatement();
            case 'with':
                return parseWithStatement();
            default:
                break;
            }
        }

        if (matchAsyncFuncExprOrDecl()) {
            return parseFunctionDeclaration();
        }

        marker = markerCreate();
        expr = parseExpression();

        // 12.12 Labelled Statements
        if ((expr.type === Syntax.Identifier) && match(':')) {
            lex();

            key = '$' + expr.name;
            if (Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
                throwError({}, Messages.Redeclaration, 'Label', expr.name);
            }

            state.labelSet[key] = true;
            labeledBody = parseStatement();
            delete state.labelSet[key];
            return markerApply(marker, delegate.createLabeledStatement(expr, labeledBody));
        }

        consumeSemicolon();

        return markerApply(marker, delegate.createExpressionStatement(expr));
    }

    // 13 Function Definition

    function parseConciseBody() {
        if (match('{')) {
            return parseFunctionSourceElements();
        }
        return parseAssignmentExpression();
    }

    function parseFunctionSourceElements() {
        var sourceElement, sourceElements = [], token, directive, firstRestricted,
            oldLabelSet, oldInIteration, oldInSwitch, oldInFunctionBody, oldParenthesizedCount,
            marker = markerCreate();

        expect('{');

        while (index < length) {
            if (lookahead.type !== Token.StringLiteral) {
                break;
            }
            token = lookahead;

            sourceElement = parseSourceElement();
            sourceElements.push(sourceElement);
            if (sourceElement.expression.type !== Syntax.Literal) {
                // this is not directive
                break;
            }
            directive = source.slice(token.range[0] + 1, token.range[1] - 1);
            if (directive === 'use strict') {
                strict = true;
                if (firstRestricted) {
                    throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
                }
            } else {
                if (!firstRestricted && token.octal) {
                    firstRestricted = token;
                }
            }
        }

        oldLabelSet = state.labelSet;
        oldInIteration = state.inIteration;
        oldInSwitch = state.inSwitch;
        oldInFunctionBody = state.inFunctionBody;
        oldParenthesizedCount = state.parenthesizedCount;

        state.labelSet = {};
        state.inIteration = false;
        state.inSwitch = false;
        state.inFunctionBody = true;
        state.parenthesizedCount = 0;

        while (index < length) {
            if (match('}')) {
                break;
            }
            sourceElement = parseSourceElement();
            if (typeof sourceElement === 'undefined') {
                break;
            }
            sourceElements.push(sourceElement);
        }

        expect('}');

        state.labelSet = oldLabelSet;
        state.inIteration = oldInIteration;
        state.inSwitch = oldInSwitch;
        state.inFunctionBody = oldInFunctionBody;
        state.parenthesizedCount = oldParenthesizedCount;

        return markerApply(marker, delegate.createBlockStatement(sourceElements));
    }

    function validateParam(options, param, name) {
        var key = '$' + name;
        if (strict) {
            if (isRestrictedWord(name)) {
                options.stricted = param;
                options.message = Messages.StrictParamName;
            }
            if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) {
                options.stricted = param;
                options.message = Messages.StrictParamDupe;
            }
        } else if (!options.firstRestricted) {
            if (isRestrictedWord(name)) {
                options.firstRestricted = param;
                options.message = Messages.StrictParamName;
            } else if (isStrictModeReservedWord(name)) {
                options.firstRestricted = param;
                options.message = Messages.StrictReservedWord;
            } else if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) {
                options.firstRestricted = param;
                options.message = Messages.StrictParamDupe;
            }
        }
        options.paramSet[key] = true;
    }

    function parseParam(options) {
        var marker, token, rest, param, def;

        token = lookahead;
        if (token.value === '...') {
            token = lex();
            rest = true;
        }

        if (match('[')) {
            marker = markerCreate();
            param = parseArrayInitialiser();
            reinterpretAsDestructuredParameter(options, param);
            if (match(':')) {
                param.typeAnnotation = parseTypeAnnotation();
                markerApply(marker, param);
            }
        } else if (match('{')) {
            marker = markerCreate();
            if (rest) {
                throwError({}, Messages.ObjectPatternAsRestParameter);
            }
            param = parseObjectInitialiser();
            reinterpretAsDestructuredParameter(options, param);
            if (match(':')) {
                param.typeAnnotation = parseTypeAnnotation();
                markerApply(marker, param);
            }
        } else {
            param =
                rest
                ? parseTypeAnnotatableIdentifier(
                    false, /* requireTypeAnnotation */
                    false /* canBeOptionalParam */
                )
                : parseTypeAnnotatableIdentifier(
                    false, /* requireTypeAnnotation */
                    true /* canBeOptionalParam */
                );

            validateParam(options, token, token.value);
        }

        if (match('=')) {
            if (rest) {
                throwErrorTolerant(lookahead, Messages.DefaultRestParameter);
            }
            lex();
            def = parseAssignmentExpression();
            ++options.defaultCount;
        }

        if (rest) {
            if (!match(')')) {
                throwError({}, Messages.ParameterAfterRestParameter);
            }
            options.rest = param;
            return false;
        }

        options.params.push(param);
        options.defaults.push(def);
        return !match(')');
    }

    function parseParams(firstRestricted) {
        var options, marker = markerCreate();

        options = {
            params: [],
            defaultCount: 0,
            defaults: [],
            rest: null,
            firstRestricted: firstRestricted
        };

        expect('(');

        if (!match(')')) {
            options.paramSet = {};
            while (index < length) {
                if (!parseParam(options)) {
                    break;
                }
                expect(',');
            }
        }

        expect(')');

        if (options.defaultCount === 0) {
            options.defaults = [];
        }

        if (match(':')) {
            options.returnType = parseTypeAnnotation();
        }

        return markerApply(marker, options);
    }

    function parseFunctionDeclaration() {
        var id, body, token, tmp, firstRestricted, message, generator, isAsync,
            previousStrict, previousYieldAllowed, previousAwaitAllowed,
            marker = markerCreate(), typeParameters;

        isAsync = false;
        if (matchAsync()) {
            lex();
            isAsync = true;
        }

        expectKeyword('function');

        generator = false;
        if (match('*')) {
            lex();
            generator = true;
        }

        token = lookahead;

        id = parseVariableIdentifier();

        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        if (strict) {
            if (isRestrictedWord(token.value)) {
                throwErrorTolerant(token, Messages.StrictFunctionName);
            }
        } else {
            if (isRestrictedWord(token.value)) {
                firstRestricted = token;
                message = Messages.StrictFunctionName;
            } else if (isStrictModeReservedWord(token.value)) {
                firstRestricted = token;
                message = Messages.StrictReservedWord;
            }
        }

        tmp = parseParams(firstRestricted);
        firstRestricted = tmp.firstRestricted;
        if (tmp.message) {
            message = tmp.message;
        }

        previousStrict = strict;
        previousYieldAllowed = state.yieldAllowed;
        state.yieldAllowed = generator;
        previousAwaitAllowed = state.awaitAllowed;
        state.awaitAllowed = isAsync;

        body = parseFunctionSourceElements();

        if (strict && firstRestricted) {
            throwError(firstRestricted, message);
        }
        if (strict && tmp.stricted) {
            throwErrorTolerant(tmp.stricted, message);
        }
        strict = previousStrict;
        state.yieldAllowed = previousYieldAllowed;
        state.awaitAllowed = previousAwaitAllowed;

        return markerApply(
            marker,
            delegate.createFunctionDeclaration(
                id,
                tmp.params,
                tmp.defaults,
                body,
                tmp.rest,
                generator,
                false,
                isAsync,
                tmp.returnType,
                typeParameters
            )
        );
    }

    function parseFunctionExpression() {
        var token, id = null, firstRestricted, message, tmp, body, generator, isAsync,
            previousStrict, previousYieldAllowed, previousAwaitAllowed,
            marker = markerCreate(), typeParameters;

        isAsync = false;
        if (matchAsync()) {
            lex();
            isAsync = true;
        }

        expectKeyword('function');

        generator = false;

        if (match('*')) {
            lex();
            generator = true;
        }

        if (!match('(')) {
            if (!match('<')) {
                token = lookahead;
                id = parseVariableIdentifier();

                if (strict) {
                    if (isRestrictedWord(token.value)) {
                        throwErrorTolerant(token, Messages.StrictFunctionName);
                    }
                } else {
                    if (isRestrictedWord(token.value)) {
                        firstRestricted = token;
                        message = Messages.StrictFunctionName;
                    } else if (isStrictModeReservedWord(token.value)) {
                        firstRestricted = token;
                        message = Messages.StrictReservedWord;
                    }
                }
            }

            if (match('<')) {
                typeParameters = parseTypeParameterDeclaration();
            }
        }

        tmp = parseParams(firstRestricted);
        firstRestricted = tmp.firstRestricted;
        if (tmp.message) {
            message = tmp.message;
        }

        previousStrict = strict;
        previousYieldAllowed = state.yieldAllowed;
        state.yieldAllowed = generator;
        previousAwaitAllowed = state.awaitAllowed;
        state.awaitAllowed = isAsync;

        body = parseFunctionSourceElements();

        if (strict && firstRestricted) {
            throwError(firstRestricted, message);
        }
        if (strict && tmp.stricted) {
            throwErrorTolerant(tmp.stricted, message);
        }
        strict = previousStrict;
        state.yieldAllowed = previousYieldAllowed;
        state.awaitAllowed = previousAwaitAllowed;

        return markerApply(
            marker,
            delegate.createFunctionExpression(
                id,
                tmp.params,
                tmp.defaults,
                body,
                tmp.rest,
                generator,
                false,
                isAsync,
                tmp.returnType,
                typeParameters
            )
        );
    }

    function parseYieldExpression() {
        var delegateFlag, expr, marker = markerCreate();

        expectKeyword('yield', !strict);

        delegateFlag = false;
        if (match('*')) {
            lex();
            delegateFlag = true;
        }

        expr = parseAssignmentExpression();

        return markerApply(marker, delegate.createYieldExpression(expr, delegateFlag));
    }

    function parseAwaitExpression() {
        var expr, marker = markerCreate();
        expectContextualKeyword('await');
        expr = parseAssignmentExpression();
        return markerApply(marker, delegate.createAwaitExpression(expr));
    }

    // 14 Classes

    function parseMethodDefinition(existingPropNames, key, isStatic, generator, computed) {
        var token, param, propType, isValidDuplicateProp = false,
            isAsync, typeParameters, tokenValue, returnType,
            annotationMarker;

        propType = isStatic ? ClassPropertyType["static"] : ClassPropertyType.prototype;

        if (generator) {
            return delegate.createMethodDefinition(
                propType,
                '',
                key,
                parsePropertyMethodFunction({ generator: true })
            );
        }

        tokenValue = key.type === 'Identifier' && key.name;

        if (tokenValue === 'get' && !match('(')) {
            key = parseObjectPropertyKey();

            // It is a syntax error if any other properties have a name
            // duplicating this one unless they are a setter
            if (existingPropNames[propType].hasOwnProperty(key.name)) {
                isValidDuplicateProp =
                    // There isn't already a getter for this prop
                    existingPropNames[propType][key.name].get === undefined
                    // There isn't already a data prop by this name
                    && existingPropNames[propType][key.name].data === undefined
                    // The only existing prop by this name is a setter
                    && existingPropNames[propType][key.name].set !== undefined;
                if (!isValidDuplicateProp) {
                    throwError(key, Messages.IllegalDuplicateClassProperty);
                }
            } else {
                existingPropNames[propType][key.name] = {};
            }
            existingPropNames[propType][key.name].get = true;

            expect('(');
            expect(')');
            if (match(':')) {
                returnType = parseTypeAnnotation();
            }
            return delegate.createMethodDefinition(
                propType,
                'get',
                key,
                parsePropertyFunction({ generator: false, returnType: returnType })
            );
        }
        if (tokenValue === 'set' && !match('(')) {
            key = parseObjectPropertyKey();

            // It is a syntax error if any other properties have a name
            // duplicating this one unless they are a getter
            if (existingPropNames[propType].hasOwnProperty(key.name)) {
                isValidDuplicateProp =
                    // There isn't already a setter for this prop
                    existingPropNames[propType][key.name].set === undefined
                    // There isn't already a data prop by this name
                    && existingPropNames[propType][key.name].data === undefined
                    // The only existing prop by this name is a getter
                    && existingPropNames[propType][key.name].get !== undefined;
                if (!isValidDuplicateProp) {
                    throwError(key, Messages.IllegalDuplicateClassProperty);
                }
            } else {
                existingPropNames[propType][key.name] = {};
            }
            existingPropNames[propType][key.name].set = true;

            expect('(');
            token = lookahead;
            param = [ parseTypeAnnotatableIdentifier() ];
            expect(')');
            if (match(':')) {
                returnType = parseTypeAnnotation();
            }
            return delegate.createMethodDefinition(
                propType,
                'set',
                key,
                parsePropertyFunction({
                    params: param,
                    generator: false,
                    name: token,
                    returnType: returnType
                })
            );
        }

        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        isAsync = tokenValue === 'async' && !match('(');
        if (isAsync) {
            key = parseObjectPropertyKey();
        }

        // It is a syntax error if any other properties have the same name as a
        // non-getter, non-setter method
        if (existingPropNames[propType].hasOwnProperty(key.name)) {
            throwError(key, Messages.IllegalDuplicateClassProperty);
        } else {
            existingPropNames[propType][key.name] = {};
        }
        existingPropNames[propType][key.name].data = true;

        return delegate.createMethodDefinition(
            propType,
            '',
            key,
            parsePropertyMethodFunction({
                generator: false,
                async: isAsync,
                typeParameters: typeParameters
            })
        );
    }

    function parseClassProperty(existingPropNames, key, computed, isStatic) {
        var typeAnnotation;

        typeAnnotation = parseTypeAnnotation();
        expect(';');

        return delegate.createClassProperty(
            key,
            typeAnnotation,
            computed,
            isStatic
        );
    }

    function parseClassElement(existingProps) {
        var computed, generator = false, key, marker = markerCreate(),
            isStatic = false;
        if (match(';')) {
            lex();
            return;
        }

        if (lookahead.value === 'static') {
            lex();
            isStatic = true;
        }

        if (match('*')) {
            lex();
            generator = true;
        }

        computed = (lookahead.value === '[');
        key = parseObjectPropertyKey();

        if (!generator && lookahead.value === ':') {
            return markerApply(marker, parseClassProperty(existingProps, key, computed, isStatic));
        }

        return markerApply(marker, parseMethodDefinition(
            existingProps,
            key,
            isStatic,
            generator,
            computed
        ));
    }

    function parseClassBody() {
        var classElement, classElements = [], existingProps = {}, marker = markerCreate();

        existingProps[ClassPropertyType["static"]] = {};
        existingProps[ClassPropertyType.prototype] = {};

        expect('{');

        while (index < length) {
            if (match('}')) {
                break;
            }
            classElement = parseClassElement(existingProps);

            if (typeof classElement !== 'undefined') {
                classElements.push(classElement);
            }
        }

        expect('}');

        return markerApply(marker, delegate.createClassBody(classElements));
    }

    function parseClassImplements() {
        var id, implemented = [], marker, typeParameters;
        expectContextualKeyword('implements');
        while (index < length) {
            marker = markerCreate();
            id = parseVariableIdentifier();
            if (match('<')) {
                typeParameters = parseTypeParameterInstantiation();
            } else {
                typeParameters = null;
            }
            implemented.push(markerApply(marker, delegate.createClassImplements(
                id,
                typeParameters
            )));
            if (!match(',')) {
                break;
            }
            expect(',');
        }
        return implemented;
    }

    function parseClassExpression() {
        var id, implemented, previousYieldAllowed, superClass = null,
            superTypeParameters, marker = markerCreate(), typeParameters;

        expectKeyword('class');

        if (!matchKeyword('extends') && !matchContextualKeyword('implements') && !match('{')) {
            id = parseVariableIdentifier();
        }

        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        if (matchKeyword('extends')) {
            expectKeyword('extends');
            previousYieldAllowed = state.yieldAllowed;
            state.yieldAllowed = false;
            superClass = parseLeftHandSideExpressionAllowCall();
            if (match('<')) {
                superTypeParameters = parseTypeParameterInstantiation();
            }
            state.yieldAllowed = previousYieldAllowed;
        }

        if (matchContextualKeyword('implements')) {
            implemented = parseClassImplements();
        }

        return markerApply(marker, delegate.createClassExpression(
            id,
            superClass,
            parseClassBody(),
            typeParameters,
            superTypeParameters,
            implemented
        ));
    }

    function parseClassDeclaration() {
        var id, implemented, previousYieldAllowed, superClass = null,
            superTypeParameters, marker = markerCreate(), typeParameters;

        expectKeyword('class');

        id = parseVariableIdentifier();

        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        if (matchKeyword('extends')) {
            expectKeyword('extends');
            previousYieldAllowed = state.yieldAllowed;
            state.yieldAllowed = false;
            superClass = parseLeftHandSideExpressionAllowCall();
            if (match('<')) {
                superTypeParameters = parseTypeParameterInstantiation();
            }
            state.yieldAllowed = previousYieldAllowed;
        }

        if (matchContextualKeyword('implements')) {
            implemented = parseClassImplements();
        }

        return markerApply(marker, delegate.createClassDeclaration(
            id,
            superClass,
            parseClassBody(),
            typeParameters,
            superTypeParameters,
            implemented
        ));
    }

    // 15 Program

    function parseSourceElement() {
        var token;
        if (lookahead.type === Token.Keyword) {
            switch (lookahead.value) {
            case 'const':
            case 'let':
                return parseConstLetDeclaration(lookahead.value);
            case 'function':
                return parseFunctionDeclaration();
            default:
                return parseStatement();
            }
        }

        if (matchContextualKeyword('type')
                && lookahead2().type === Token.Identifier) {
            return parseTypeAlias();
        }

        if (matchContextualKeyword('interface')
                && lookahead2().type === Token.Identifier) {
            return parseInterface();
        }

        if (matchContextualKeyword('declare')) {
            token = lookahead2();
            if (token.type === Token.Keyword) {
                switch (token.value) {
                case 'class':
                    return parseDeclareClass();
                case 'function':
                    return parseDeclareFunction();
                case 'var':
                    return parseDeclareVariable();
                }
            } else if (token.type === Token.Identifier
                    && token.value === 'module') {
                return parseDeclareModule();
            }
        }

        if (lookahead.type !== Token.EOF) {
            return parseStatement();
        }
    }

    function parseProgramElement() {
        if (lookahead.type === Token.Keyword) {
            switch (lookahead.value) {
            case 'export':
                return parseExportDeclaration();
            case 'import':
                return parseImportDeclaration();
            }
        }

        return parseSourceElement();
    }

    function parseProgramElements() {
        var sourceElement, sourceElements = [], token, directive, firstRestricted;

        while (index < length) {
            token = lookahead;
            if (token.type !== Token.StringLiteral) {
                break;
            }

            sourceElement = parseProgramElement();
            sourceElements.push(sourceElement);
            if (sourceElement.expression.type !== Syntax.Literal) {
                // this is not directive
                break;
            }
            directive = source.slice(token.range[0] + 1, token.range[1] - 1);
            if (directive === 'use strict') {
                strict = true;
                if (firstRestricted) {
                    throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
                }
            } else {
                if (!firstRestricted && token.octal) {
                    firstRestricted = token;
                }
            }
        }

        while (index < length) {
            sourceElement = parseProgramElement();
            if (typeof sourceElement === 'undefined') {
                break;
            }
            sourceElements.push(sourceElement);
        }
        return sourceElements;
    }

    function parseProgram() {
        var body, marker = markerCreate();
        strict = false;
        peek();
        body = parseProgramElements();
        return markerApply(marker, delegate.createProgram(body));
    }

    // The following functions are needed only when the option to preserve
    // the comments is active.

    function addComment(type, value, start, end, loc) {
        var comment;

        assert(typeof start === 'number', 'Comment must have valid position');

        // Because the way the actual token is scanned, often the comments
        // (if any) are skipped twice during the lexical analysis.
        // Thus, we need to skip adding a comment if the comment array already
        // handled it.
        if (state.lastCommentStart >= start) {
            return;
        }
        state.lastCommentStart = start;

        comment = {
            type: type,
            value: value
        };
        if (extra.range) {
            comment.range = [start, end];
        }
        if (extra.loc) {
            comment.loc = loc;
        }
        extra.comments.push(comment);
        if (extra.attachComment) {
            extra.leadingComments.push(comment);
            extra.trailingComments.push(comment);
        }
    }

    function scanComment() {
        var comment, ch, loc, start, blockComment, lineComment;

        comment = '';
        blockComment = false;
        lineComment = false;

        while (index < length) {
            ch = source[index];

            if (lineComment) {
                ch = source[index++];
                if (isLineTerminator(ch.charCodeAt(0))) {
                    loc.end = {
                        line: lineNumber,
                        column: index - lineStart - 1
                    };
                    lineComment = false;
                    addComment('Line', comment, start, index - 1, loc);
                    if (ch === '\r' && source[index] === '\n') {
                        ++index;
                    }
                    ++lineNumber;
                    lineStart = index;
                    comment = '';
                } else if (index >= length) {
                    lineComment = false;
                    comment += ch;
                    loc.end = {
                        line: lineNumber,
                        column: length - lineStart
                    };
                    addComment('Line', comment, start, length, loc);
                } else {
                    comment += ch;
                }
            } else if (blockComment) {
                if (isLineTerminator(ch.charCodeAt(0))) {
                    if (ch === '\r') {
                        ++index;
                        comment += '\r';
                    }
                    if (ch !== '\r' || source[index] === '\n') {
                        comment += source[index];
                        ++lineNumber;
                        ++index;
                        lineStart = index;
                        if (index >= length) {
                            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                        }
                    }
                } else {
                    ch = source[index++];
                    if (index >= length) {
                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                    }
                    comment += ch;
                    if (ch === '*') {
                        ch = source[index];
                        if (ch === '/') {
                            comment = comment.substr(0, comment.length - 1);
                            blockComment = false;
                            ++index;
                            loc.end = {
                                line: lineNumber,
                                column: index - lineStart
                            };
                            addComment('Block', comment, start, index, loc);
                            comment = '';
                        }
                    }
                }
            } else if (ch === '/') {
                ch = source[index + 1];
                if (ch === '/') {
                    loc = {
                        start: {
                            line: lineNumber,
                            column: index - lineStart
                        }
                    };
                    start = index;
                    index += 2;
                    lineComment = true;
                    if (index >= length) {
                        loc.end = {
                            line: lineNumber,
                            column: index - lineStart
                        };
                        lineComment = false;
                        addComment('Line', comment, start, index, loc);
                    }
                } else if (ch === '*') {
                    start = index;
                    index += 2;
                    blockComment = true;
                    loc = {
                        start: {
                            line: lineNumber,
                            column: index - lineStart - 2
                        }
                    };
                    if (index >= length) {
                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                    }
                } else {
                    break;
                }
            } else if (isWhiteSpace(ch.charCodeAt(0))) {
                ++index;
            } else if (isLineTerminator(ch.charCodeAt(0))) {
                ++index;
                if (ch ===  '\r' && source[index] === '\n') {
                    ++index;
                }
                ++lineNumber;
                lineStart = index;
            } else {
                break;
            }
        }
    }

    // 16 XJS

    XHTMLEntities = {
        quot: '\u0022',
        amp: '&',
        apos: '\u0027',
        lt: '<',
        gt: '>',
        nbsp: '\u00A0',
        iexcl: '\u00A1',
        cent: '\u00A2',
        pound: '\u00A3',
        curren: '\u00A4',
        yen: '\u00A5',
        brvbar: '\u00A6',
        sect: '\u00A7',
        uml: '\u00A8',
        copy: '\u00A9',
        ordf: '\u00AA',
        laquo: '\u00AB',
        not: '\u00AC',
        shy: '\u00AD',
        reg: '\u00AE',
        macr: '\u00AF',
        deg: '\u00B0',
        plusmn: '\u00B1',
        sup2: '\u00B2',
        sup3: '\u00B3',
        acute: '\u00B4',
        micro: '\u00B5',
        para: '\u00B6',
        middot: '\u00B7',
        cedil: '\u00B8',
        sup1: '\u00B9',
        ordm: '\u00BA',
        raquo: '\u00BB',
        frac14: '\u00BC',
        frac12: '\u00BD',
        frac34: '\u00BE',
        iquest: '\u00BF',
        Agrave: '\u00C0',
        Aacute: '\u00C1',
        Acirc: '\u00C2',
        Atilde: '\u00C3',
        Auml: '\u00C4',
        Aring: '\u00C5',
        AElig: '\u00C6',
        Ccedil: '\u00C7',
        Egrave: '\u00C8',
        Eacute: '\u00C9',
        Ecirc: '\u00CA',
        Euml: '\u00CB',
        Igrave: '\u00CC',
        Iacute: '\u00CD',
        Icirc: '\u00CE',
        Iuml: '\u00CF',
        ETH: '\u00D0',
        Ntilde: '\u00D1',
        Ograve: '\u00D2',
        Oacute: '\u00D3',
        Ocirc: '\u00D4',
        Otilde: '\u00D5',
        Ouml: '\u00D6',
        times: '\u00D7',
        Oslash: '\u00D8',
        Ugrave: '\u00D9',
        Uacute: '\u00DA',
        Ucirc: '\u00DB',
        Uuml: '\u00DC',
        Yacute: '\u00DD',
        THORN: '\u00DE',
        szlig: '\u00DF',
        agrave: '\u00E0',
        aacute: '\u00E1',
        acirc: '\u00E2',
        atilde: '\u00E3',
        auml: '\u00E4',
        aring: '\u00E5',
        aelig: '\u00E6',
        ccedil: '\u00E7',
        egrave: '\u00E8',
        eacute: '\u00E9',
        ecirc: '\u00EA',
        euml: '\u00EB',
        igrave: '\u00EC',
        iacute: '\u00ED',
        icirc: '\u00EE',
        iuml: '\u00EF',
        eth: '\u00F0',
        ntilde: '\u00F1',
        ograve: '\u00F2',
        oacute: '\u00F3',
        ocirc: '\u00F4',
        otilde: '\u00F5',
        ouml: '\u00F6',
        divide: '\u00F7',
        oslash: '\u00F8',
        ugrave: '\u00F9',
        uacute: '\u00FA',
        ucirc: '\u00FB',
        uuml: '\u00FC',
        yacute: '\u00FD',
        thorn: '\u00FE',
        yuml: '\u00FF',
        OElig: '\u0152',
        oelig: '\u0153',
        Scaron: '\u0160',
        scaron: '\u0161',
        Yuml: '\u0178',
        fnof: '\u0192',
        circ: '\u02C6',
        tilde: '\u02DC',
        Alpha: '\u0391',
        Beta: '\u0392',
        Gamma: '\u0393',
        Delta: '\u0394',
        Epsilon: '\u0395',
        Zeta: '\u0396',
        Eta: '\u0397',
        Theta: '\u0398',
        Iota: '\u0399',
        Kappa: '\u039A',
        Lambda: '\u039B',
        Mu: '\u039C',
        Nu: '\u039D',
        Xi: '\u039E',
        Omicron: '\u039F',
        Pi: '\u03A0',
        Rho: '\u03A1',
        Sigma: '\u03A3',
        Tau: '\u03A4',
        Upsilon: '\u03A5',
        Phi: '\u03A6',
        Chi: '\u03A7',
        Psi: '\u03A8',
        Omega: '\u03A9',
        alpha: '\u03B1',
        beta: '\u03B2',
        gamma: '\u03B3',
        delta: '\u03B4',
        epsilon: '\u03B5',
        zeta: '\u03B6',
        eta: '\u03B7',
        theta: '\u03B8',
        iota: '\u03B9',
        kappa: '\u03BA',
        lambda: '\u03BB',
        mu: '\u03BC',
        nu: '\u03BD',
        xi: '\u03BE',
        omicron: '\u03BF',
        pi: '\u03C0',
        rho: '\u03C1',
        sigmaf: '\u03C2',
        sigma: '\u03C3',
        tau: '\u03C4',
        upsilon: '\u03C5',
        phi: '\u03C6',
        chi: '\u03C7',
        psi: '\u03C8',
        omega: '\u03C9',
        thetasym: '\u03D1',
        upsih: '\u03D2',
        piv: '\u03D6',
        ensp: '\u2002',
        emsp: '\u2003',
        thinsp: '\u2009',
        zwnj: '\u200C',
        zwj: '\u200D',
        lrm: '\u200E',
        rlm: '\u200F',
        ndash: '\u2013',
        mdash: '\u2014',
        lsquo: '\u2018',
        rsquo: '\u2019',
        sbquo: '\u201A',
        ldquo: '\u201C',
        rdquo: '\u201D',
        bdquo: '\u201E',
        dagger: '\u2020',
        Dagger: '\u2021',
        bull: '\u2022',
        hellip: '\u2026',
        permil: '\u2030',
        prime: '\u2032',
        Prime: '\u2033',
        lsaquo: '\u2039',
        rsaquo: '\u203A',
        oline: '\u203E',
        frasl: '\u2044',
        euro: '\u20AC',
        image: '\u2111',
        weierp: '\u2118',
        real: '\u211C',
        trade: '\u2122',
        alefsym: '\u2135',
        larr: '\u2190',
        uarr: '\u2191',
        rarr: '\u2192',
        darr: '\u2193',
        harr: '\u2194',
        crarr: '\u21B5',
        lArr: '\u21D0',
        uArr: '\u21D1',
        rArr: '\u21D2',
        dArr: '\u21D3',
        hArr: '\u21D4',
        forall: '\u2200',
        part: '\u2202',
        exist: '\u2203',
        empty: '\u2205',
        nabla: '\u2207',
        isin: '\u2208',
        notin: '\u2209',
        ni: '\u220B',
        prod: '\u220F',
        sum: '\u2211',
        minus: '\u2212',
        lowast: '\u2217',
        radic: '\u221A',
        prop: '\u221D',
        infin: '\u221E',
        ang: '\u2220',
        and: '\u2227',
        or: '\u2228',
        cap: '\u2229',
        cup: '\u222A',
        'int': '\u222B',
        there4: '\u2234',
        sim: '\u223C',
        cong: '\u2245',
        asymp: '\u2248',
        ne: '\u2260',
        equiv: '\u2261',
        le: '\u2264',
        ge: '\u2265',
        sub: '\u2282',
        sup: '\u2283',
        nsub: '\u2284',
        sube: '\u2286',
        supe: '\u2287',
        oplus: '\u2295',
        otimes: '\u2297',
        perp: '\u22A5',
        sdot: '\u22C5',
        lceil: '\u2308',
        rceil: '\u2309',
        lfloor: '\u230A',
        rfloor: '\u230B',
        lang: '\u2329',
        rang: '\u232A',
        loz: '\u25CA',
        spades: '\u2660',
        clubs: '\u2663',
        hearts: '\u2665',
        diams: '\u2666'
    };

    function getQualifiedXJSName(object) {
        if (object.type === Syntax.XJSIdentifier) {
            return object.name;
        }
        if (object.type === Syntax.XJSNamespacedName) {
            return object.namespace.name + ':' + object.name.name;
        }
        if (object.type === Syntax.XJSMemberExpression) {
            return (
                getQualifiedXJSName(object.object) + '.' +
                getQualifiedXJSName(object.property)
            );
        }
    }

    function isXJSIdentifierStart(ch) {
        // exclude backslash (\)
        return (ch !== 92) && isIdentifierStart(ch);
    }

    function isXJSIdentifierPart(ch) {
        // exclude backslash (\) and add hyphen (-)
        return (ch !== 92) && (ch === 45 || isIdentifierPart(ch));
    }

    function scanXJSIdentifier() {
        var ch, start, value = '';

        start = index;
        while (index < length) {
            ch = source.charCodeAt(index);
            if (!isXJSIdentifierPart(ch)) {
                break;
            }
            value += source[index++];
        }

        return {
            type: Token.XJSIdentifier,
            value: value,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanXJSEntity() {
        var ch, str = '', start = index, count = 0, code;
        ch = source[index];
        assert(ch === '&', 'Entity must start with an ampersand');
        index++;
        while (index < length && count++ < 10) {
            ch = source[index++];
            if (ch === ';') {
                break;
            }
            str += ch;
        }

        // Well-formed entity (ending was found).
        if (ch === ';') {
            // Numeric entity.
            if (str[0] === '#') {
                if (str[1] === 'x') {
                    code = +('0' + str.substr(1));
                } else {
                    // Removing leading zeros in order to avoid treating as octal in old browsers.
                    code = +str.substr(1).replace(Regex.LeadingZeros, '');
                }

                if (!isNaN(code)) {
                    return String.fromCharCode(code);
                }
            } else if (XHTMLEntities[str]) {
                return XHTMLEntities[str];
            }
        }

        // Treat non-entity sequences as regular text.
        index = start + 1;
        return '&';
    }

    function scanXJSText(stopChars) {
        var ch, str = '', start;
        start = index;
        while (index < length) {
            ch = source[index];
            if (stopChars.indexOf(ch) !== -1) {
                break;
            }
            if (ch === '&') {
                str += scanXJSEntity();
            } else {
                index++;
                if (ch === '\r' && source[index] === '\n') {
                    str += ch;
                    ch = source[index];
                    index++;
                }
                if (isLineTerminator(ch.charCodeAt(0))) {
                    ++lineNumber;
                    lineStart = index;
                }
                str += ch;
            }
        }
        return {
            type: Token.XJSText,
            value: str,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanXJSStringLiteral() {
        var innerToken, quote, start;

        quote = source[index];
        assert((quote === '\'' || quote === '"'),
            'String literal must starts with a quote');

        start = index;
        ++index;

        innerToken = scanXJSText([quote]);

        if (quote !== source[index]) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        ++index;

        innerToken.range = [start, index];

        return innerToken;
    }

    /**
     * Between XJS opening and closing tags (e.g. <foo>HERE</foo>), anything that
     * is not another XJS tag and is not an expression wrapped by {} is text.
     */
    function advanceXJSChild() {
        var ch = source.charCodeAt(index);

        // { (123) and < (60)
        if (ch !== 123 && ch !== 60) {
            return scanXJSText(['<', '{']);
        }

        return scanPunctuator();
    }

    function parseXJSIdentifier() {
        var token, marker = markerCreate();

        if (lookahead.type !== Token.XJSIdentifier) {
            throwUnexpected(lookahead);
        }

        token = lex();
        return markerApply(marker, delegate.createXJSIdentifier(token.value));
    }

    function parseXJSNamespacedName() {
        var namespace, name, marker = markerCreate();

        namespace = parseXJSIdentifier();
        expect(':');
        name = parseXJSIdentifier();

        return markerApply(marker, delegate.createXJSNamespacedName(namespace, name));
    }

    function parseXJSMemberExpression() {
        var marker = markerCreate(),
            expr = parseXJSIdentifier();

        while (match('.')) {
            lex();
            expr = markerApply(marker, delegate.createXJSMemberExpression(expr, parseXJSIdentifier()));
        }

        return expr;
    }

    function parseXJSElementName() {
        if (lookahead2().value === ':') {
            return parseXJSNamespacedName();
        }
        if (lookahead2().value === '.') {
            return parseXJSMemberExpression();
        }

        return parseXJSIdentifier();
    }

    function parseXJSAttributeName() {
        if (lookahead2().value === ':') {
            return parseXJSNamespacedName();
        }

        return parseXJSIdentifier();
    }

    function parseXJSAttributeValue() {
        var value, marker;
        if (match('{')) {
            value = parseXJSExpressionContainer();
            if (value.expression.type === Syntax.XJSEmptyExpression) {
                throwError(
                    value,
                    'XJS attributes must only be assigned a non-empty ' +
                        'expression'
                );
            }
        } else if (match('<')) {
            value = parseXJSElement();
        } else if (lookahead.type === Token.XJSText) {
            marker = markerCreate();
            value = markerApply(marker, delegate.createLiteral(lex()));
        } else {
            throwError({}, Messages.InvalidXJSAttributeValue);
        }
        return value;
    }

    function parseXJSEmptyExpression() {
        var marker = markerCreatePreserveWhitespace();
        while (source.charAt(index) !== '}') {
            index++;
        }
        return markerApply(marker, delegate.createXJSEmptyExpression());
    }

    function parseXJSExpressionContainer() {
        var expression, origInXJSChild, origInXJSTag, marker = markerCreate();

        origInXJSChild = state.inXJSChild;
        origInXJSTag = state.inXJSTag;
        state.inXJSChild = false;
        state.inXJSTag = false;

        expect('{');

        if (match('}')) {
            expression = parseXJSEmptyExpression();
        } else {
            expression = parseExpression();
        }

        state.inXJSChild = origInXJSChild;
        state.inXJSTag = origInXJSTag;

        expect('}');

        return markerApply(marker, delegate.createXJSExpressionContainer(expression));
    }

    function parseXJSSpreadAttribute() {
        var expression, origInXJSChild, origInXJSTag, marker = markerCreate();

        origInXJSChild = state.inXJSChild;
        origInXJSTag = state.inXJSTag;
        state.inXJSChild = false;
        state.inXJSTag = false;

        expect('{');
        expect('...');

        expression = parseAssignmentExpression();

        state.inXJSChild = origInXJSChild;
        state.inXJSTag = origInXJSTag;

        expect('}');

        return markerApply(marker, delegate.createXJSSpreadAttribute(expression));
    }

    function parseXJSAttribute() {
        var name, marker;

        if (match('{')) {
            return parseXJSSpreadAttribute();
        }

        marker = markerCreate();

        name = parseXJSAttributeName();

        // HTML empty attribute
        if (match('=')) {
            lex();
            return markerApply(marker, delegate.createXJSAttribute(name, parseXJSAttributeValue()));
        }

        return markerApply(marker, delegate.createXJSAttribute(name));
    }

    function parseXJSChild() {
        var token, marker;
        if (match('{')) {
            token = parseXJSExpressionContainer();
        } else if (lookahead.type === Token.XJSText) {
            marker = markerCreatePreserveWhitespace();
            token = markerApply(marker, delegate.createLiteral(lex()));
        } else {
            token = parseXJSElement();
        }
        return token;
    }

    function parseXJSClosingElement() {
        var name, origInXJSChild, origInXJSTag, marker = markerCreate();
        origInXJSChild = state.inXJSChild;
        origInXJSTag = state.inXJSTag;
        state.inXJSChild = false;
        state.inXJSTag = true;
        expect('<');
        expect('/');
        name = parseXJSElementName();
        // Because advance() (called by lex() called by expect()) expects there
        // to be a valid token after >, it needs to know whether to look for a
        // standard JS token or an XJS text node
        state.inXJSChild = origInXJSChild;
        state.inXJSTag = origInXJSTag;
        expect('>');
        return markerApply(marker, delegate.createXJSClosingElement(name));
    }

    function parseXJSOpeningElement() {
        var name, attribute, attributes = [], selfClosing = false, origInXJSChild, origInXJSTag, marker = markerCreate();

        origInXJSChild = state.inXJSChild;
        origInXJSTag = state.inXJSTag;
        state.inXJSChild = false;
        state.inXJSTag = true;

        expect('<');

        name = parseXJSElementName();

        while (index < length &&
                lookahead.value !== '/' &&
                lookahead.value !== '>') {
            attributes.push(parseXJSAttribute());
        }

        state.inXJSTag = origInXJSTag;

        if (lookahead.value === '/') {
            expect('/');
            // Because advance() (called by lex() called by expect()) expects
            // there to be a valid token after >, it needs to know whether to
            // look for a standard JS token or an XJS text node
            state.inXJSChild = origInXJSChild;
            expect('>');
            selfClosing = true;
        } else {
            state.inXJSChild = true;
            expect('>');
        }
        return markerApply(marker, delegate.createXJSOpeningElement(name, attributes, selfClosing));
    }

    function parseXJSElement() {
        var openingElement, closingElement = null, children = [], origInXJSChild, origInXJSTag, marker = markerCreate();

        origInXJSChild = state.inXJSChild;
        origInXJSTag = state.inXJSTag;
        openingElement = parseXJSOpeningElement();

        if (!openingElement.selfClosing) {
            while (index < length) {
                state.inXJSChild = false; // Call lookahead2() with inXJSChild = false because </ should not be considered in the child
                if (lookahead.value === '<' && lookahead2().value === '/') {
                    break;
                }
                state.inXJSChild = true;
                children.push(parseXJSChild());
            }
            state.inXJSChild = origInXJSChild;
            state.inXJSTag = origInXJSTag;
            closingElement = parseXJSClosingElement();
            if (getQualifiedXJSName(closingElement.name) !== getQualifiedXJSName(openingElement.name)) {
                throwError({}, Messages.ExpectedXJSClosingTag, getQualifiedXJSName(openingElement.name));
            }
        }

        // When (erroneously) writing two adjacent tags like
        //
        //     var x = <div>one</div><div>two</div>;
        //
        // the default error message is a bit incomprehensible. Since it's
        // rarely (never?) useful to write a less-than sign after an XJS
        // element, we disallow it here in the parser in order to provide a
        // better error message. (In the rare case that the less-than operator
        // was intended, the left tag can be wrapped in parentheses.)
        if (!origInXJSChild && match('<')) {
            throwError(lookahead, Messages.AdjacentXJSElements);
        }

        return markerApply(marker, delegate.createXJSElement(openingElement, closingElement, children));
    }

    function parseTypeAlias() {
        var id, marker = markerCreate(), typeParameters = null, right;
        expectContextualKeyword('type');
        id = parseVariableIdentifier();
        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }
        expect('=');
        right = parseType();
        consumeSemicolon();
        return markerApply(marker, delegate.createTypeAlias(id, typeParameters, right));
    }

    function parseInterfaceExtends() {
        var marker = markerCreate(), id, typeParameters = null;

        id = parseVariableIdentifier();
        if (match('<')) {
            typeParameters = parseTypeParameterInstantiation();
        }

        return markerApply(marker, delegate.createInterfaceExtends(
            id,
            typeParameters
        ));
    }

    function parseInterfaceish(marker, allowStatic) {
        var body, bodyMarker, extended = [], id,
            typeParameters = null;

        id = parseVariableIdentifier();
        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        if (matchKeyword('extends')) {
            expectKeyword('extends');

            while (index < length) {
                extended.push(parseInterfaceExtends());
                if (!match(',')) {
                    break;
                }
                expect(',');
            }
        }

        bodyMarker = markerCreate();
        body = markerApply(bodyMarker, parseObjectType(allowStatic));

        return markerApply(marker, delegate.createInterface(
            id,
            typeParameters,
            body,
            extended
        ));
    }

    function parseInterface() {
        var body, bodyMarker, extended = [], id, marker = markerCreate(),
            typeParameters = null;

        expectContextualKeyword('interface');
        return parseInterfaceish(marker, /* allowStatic */false);
    }

    function parseDeclareClass() {
        var marker = markerCreate(), ret;
        expectContextualKeyword('declare');
        expectKeyword('class');

        ret = parseInterfaceish(marker, /* allowStatic */true);
        ret.type = Syntax.DeclareClass;
        return ret;
    }

    function parseDeclareFunction() {
        var id, idMarker,
            marker = markerCreate(), params, returnType, rest, tmp,
            typeParameters = null, value, valueMarker;

        expectContextualKeyword('declare');
        expectKeyword('function');
        idMarker = markerCreate();
        id = parseVariableIdentifier();

        valueMarker = markerCreate();
        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }
        expect('(');
        tmp = parseFunctionTypeParams();
        params = tmp.params;
        rest = tmp.rest;
        expect(')');

        expect(':');
        returnType = parseType();

        value = markerApply(valueMarker, delegate.createFunctionTypeAnnotation(
            params,
            returnType,
            rest,
            typeParameters
        ));

        id.typeAnnotation = markerApply(valueMarker, delegate.createTypeAnnotation(
            value
        ));
        markerApply(idMarker, id);

        consumeSemicolon();

        return markerApply(marker, delegate.createDeclareFunction(
            id
        ));
    }

    function parseDeclareVariable() {
        var id, marker = markerCreate();
        expectContextualKeyword('declare');
        expectKeyword('var');
        id = parseTypeAnnotatableIdentifier();

        consumeSemicolon();

        return markerApply(marker, delegate.createDeclareVariable(
            id
        ));
    }

    function parseDeclareModule() {
        var body = [], bodyMarker, id, idMarker, marker = markerCreate(), token;
        expectContextualKeyword('declare');
        expectContextualKeyword('module');

        if (lookahead.type === Token.StringLiteral) {
            if (strict && lookahead.octal) {
                throwErrorTolerant(lookahead, Messages.StrictOctalLiteral);
            }
            idMarker = markerCreate();
            id = markerApply(idMarker, delegate.createLiteral(lex()));
        } else {
            id = parseVariableIdentifier();
        }

        bodyMarker = markerCreate();
        expect('{');
        while (index < length && !match('}')) {
            token = lookahead2();
            switch (token.value) {
            case 'class':
                body.push(parseDeclareClass());
                break;
            case 'function':
                body.push(parseDeclareFunction());
                break;
            case 'var':
                body.push(parseDeclareVariable());
                break;
            default:
                throwUnexpected(lookahead);
            }
        }
        expect('}');

        return markerApply(marker, delegate.createDeclareModule(
            id,
            markerApply(bodyMarker, delegate.createBlockStatement(body))
        ));
    }

    function collectToken() {
        var start, loc, token, range, value, entry;

        if (!state.inXJSChild) {
            skipComment();
        }

        start = index;
        loc = {
            start: {
                line: lineNumber,
                column: index - lineStart
            }
        };

        token = extra.advance();
        loc.end = {
            line: lineNumber,
            column: index - lineStart
        };

        if (token.type !== Token.EOF) {
            range = [token.range[0], token.range[1]];
            value = source.slice(token.range[0], token.range[1]);
            entry = {
                type: TokenName[token.type],
                value: value,
                range: range,
                loc: loc
            };
            if (token.regex) {
                entry.regex = {
                    pattern: token.regex.pattern,
                    flags: token.regex.flags
                };
            }
            extra.tokens.push(entry);
        }

        return token;
    }

    function collectRegex() {
        var pos, loc, regex, token;

        skipComment();

        pos = index;
        loc = {
            start: {
                line: lineNumber,
                column: index - lineStart
            }
        };

        regex = extra.scanRegExp();
        loc.end = {
            line: lineNumber,
            column: index - lineStart
        };

        if (!extra.tokenize) {
            // Pop the previous token, which is likely '/' or '/='
            if (extra.tokens.length > 0) {
                token = extra.tokens[extra.tokens.length - 1];
                if (token.range[0] === pos && token.type === 'Punctuator') {
                    if (token.value === '/' || token.value === '/=') {
                        extra.tokens.pop();
                    }
                }
            }

            extra.tokens.push({
                type: 'RegularExpression',
                value: regex.literal,
                regex: regex.regex,
                range: [pos, index],
                loc: loc
            });
        }

        return regex;
    }

    function filterTokenLocation() {
        var i, entry, token, tokens = [];

        for (i = 0; i < extra.tokens.length; ++i) {
            entry = extra.tokens[i];
            token = {
                type: entry.type,
                value: entry.value
            };
            if (entry.regex) {
                token.regex = {
                    pattern: entry.regex.pattern,
                    flags: entry.regex.flags
                };
            }
            if (extra.range) {
                token.range = entry.range;
            }
            if (extra.loc) {
                token.loc = entry.loc;
            }
            tokens.push(token);
        }

        extra.tokens = tokens;
    }

    function patch() {
        if (extra.comments) {
            extra.skipComment = skipComment;
            skipComment = scanComment;
        }

        if (typeof extra.tokens !== 'undefined') {
            extra.advance = advance;
            extra.scanRegExp = scanRegExp;

            advance = collectToken;
            scanRegExp = collectRegex;
        }
    }

    function unpatch() {
        if (typeof extra.skipComment === 'function') {
            skipComment = extra.skipComment;
        }

        if (typeof extra.scanRegExp === 'function') {
            advance = extra.advance;
            scanRegExp = extra.scanRegExp;
        }
    }

    // This is used to modify the delegate.

    function extend(object, properties) {
        var entry, result = {};

        for (entry in object) {
            if (object.hasOwnProperty(entry)) {
                result[entry] = object[entry];
            }
        }

        for (entry in properties) {
            if (properties.hasOwnProperty(entry)) {
                result[entry] = properties[entry];
            }
        }

        return result;
    }

    function tokenize(code, options) {
        var toString,
            token,
            tokens;

        toString = String;
        if (typeof code !== 'string' && !(code instanceof String)) {
            code = toString(code);
        }

        delegate = SyntaxTreeDelegate;
        source = code;
        index = 0;
        lineNumber = (source.length > 0) ? 1 : 0;
        lineStart = 0;
        length = source.length;
        lookahead = null;
        state = {
            allowKeyword: true,
            allowIn: true,
            labelSet: {},
            inFunctionBody: false,
            inIteration: false,
            inSwitch: false,
            lastCommentStart: -1
        };

        extra = {};

        // Options matching.
        options = options || {};

        // Of course we collect tokens here.
        options.tokens = true;
        extra.tokens = [];
        extra.tokenize = true;
        // The following two fields are necessary to compute the Regex tokens.
        extra.openParenToken = -1;
        extra.openCurlyToken = -1;

        extra.range = (typeof options.range === 'boolean') && options.range;
        extra.loc = (typeof options.loc === 'boolean') && options.loc;

        if (typeof options.comment === 'boolean' && options.comment) {
            extra.comments = [];
        }
        if (typeof options.tolerant === 'boolean' && options.tolerant) {
            extra.errors = [];
        }

        if (length > 0) {
            if (typeof source[0] === 'undefined') {
                // Try first to convert to a string. This is good as fast path
                // for old IE which understands string indexing for string
                // literals only and not for string object.
                if (code instanceof String) {
                    source = code.valueOf();
                }
            }
        }

        patch();

        try {
            peek();
            if (lookahead.type === Token.EOF) {
                return extra.tokens;
            }

            token = lex();
            while (lookahead.type !== Token.EOF) {
                try {
                    token = lex();
                } catch (lexError) {
                    token = lookahead;
                    if (extra.errors) {
                        extra.errors.push(lexError);
                        // We have to break on the first error
                        // to avoid infinite loops.
                        break;
                    } else {
                        throw lexError;
                    }
                }
            }

            filterTokenLocation();
            tokens = extra.tokens;
            if (typeof extra.comments !== 'undefined') {
                tokens.comments = extra.comments;
            }
            if (typeof extra.errors !== 'undefined') {
                tokens.errors = extra.errors;
            }
        } catch (e) {
            throw e;
        } finally {
            unpatch();
            extra = {};
        }
        return tokens;
    }

    function parse(code, options) {
        var program, toString;

        toString = String;
        if (typeof code !== 'string' && !(code instanceof String)) {
            code = toString(code);
        }

        delegate = SyntaxTreeDelegate;
        source = code;
        index = 0;
        lineNumber = (source.length > 0) ? 1 : 0;
        lineStart = 0;
        length = source.length;
        lookahead = null;
        state = {
            allowKeyword: false,
            allowIn: true,
            labelSet: {},
            parenthesizedCount: 0,
            inFunctionBody: false,
            inIteration: false,
            inSwitch: false,
            inXJSChild: false,
            inXJSTag: false,
            inType: false,
            lastCommentStart: -1,
            yieldAllowed: false,
            awaitAllowed: false
        };

        extra = {};
        if (typeof options !== 'undefined') {
            extra.range = (typeof options.range === 'boolean') && options.range;
            extra.loc = (typeof options.loc === 'boolean') && options.loc;
            extra.attachComment = (typeof options.attachComment === 'boolean') && options.attachComment;

            if (extra.loc && options.source !== null && options.source !== undefined) {
                delegate = extend(delegate, {
                    'postProcess': function (node) {
                        node.loc.source = toString(options.source);
                        return node;
                    }
                });
            }

            if (typeof options.tokens === 'boolean' && options.tokens) {
                extra.tokens = [];
            }
            if (typeof options.comment === 'boolean' && options.comment) {
                extra.comments = [];
            }
            if (typeof options.tolerant === 'boolean' && options.tolerant) {
                extra.errors = [];
            }
            if (extra.attachComment) {
                extra.range = true;
                extra.comments = [];
                extra.bottomRightStack = [];
                extra.trailingComments = [];
                extra.leadingComments = [];
            }
        }

        if (length > 0) {
            if (typeof source[0] === 'undefined') {
                // Try first to convert to a string. This is good as fast path
                // for old IE which understands string indexing for string
                // literals only and not for string object.
                if (code instanceof String) {
                    source = code.valueOf();
                }
            }
        }

        patch();
        try {
            program = parseProgram();
            if (typeof extra.comments !== 'undefined') {
                program.comments = extra.comments;
            }
            if (typeof extra.tokens !== 'undefined') {
                filterTokenLocation();
                program.tokens = extra.tokens;
            }
            if (typeof extra.errors !== 'undefined') {
                program.errors = extra.errors;
            }
        } catch (e) {
            throw e;
        } finally {
            unpatch();
            extra = {};
        }

        return program;
    }

    // Sync with *.json manifests.
    exports.version = '8001.1001.0-dev-harmony-fb';

    exports.tokenize = tokenize;

    exports.parse = parse;

    // Deep copy.
    exports.Syntax = (function () {
        var name, types = {};

        if (typeof Object.create === 'function') {
            types = Object.create(null);
        }

        for (name in Syntax) {
            if (Syntax.hasOwnProperty(name)) {
                types[name] = Syntax[name];
            }
        }

        if (typeof Object.freeze === 'function') {
            Object.freeze(types);
        }

        return types;
    }());

 }));
 /* vim: set sw=4 ts=4 et tw=80 : */

 },{}],10:[function(_dereq_,module,exports){
 /*
 * Copyright 2009-2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE.txt or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
 exports.SourceMapGenerator = _dereq_('./source-map/source-map-generator').SourceMapGenerator;
 exports.SourceMapConsumer = _dereq_('./source-map/source-map-consumer').SourceMapConsumer;
 exports.SourceNode = _dereq_('./source-map/source-node').SourceNode;

 },{"./source-map/source-map-consumer":15,"./source-map/source-map-generator":16,"./source-map/source-node":17}],11:[function(_dereq_,module,exports){
 /* -*- Mode: js; js-indent-level: 2; -*- */
 /*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
 if (typeof define !== 'function') {
    var define = _dereq_('amdefine')(module, _dereq_);
 }
 define(function (_dereq_, exports, module) {

  var util = _dereq_('./util');

  /**
   * A data structure which is a combination of an array and a set. Adding a new
   * member is O(1), testing for membership is O(1), and finding the index of an
   * element is O(1). Removing elements from the set is not supported. Only
   * strings are supported for membership.
   */
  function ArraySet() {
    this._array = [];
    this._set = {};
  }

  /**
   * Static method for creating ArraySet instances from an existing array.
   */
  ArraySet.fromArray = function ArraySet_fromArray(aArray, aAllowDuplicates) {
    var set = new ArraySet();
    for (var i = 0, len = aArray.length; i < len; i++) {
      set.add(aArray[i], aAllowDuplicates);
    }
    return set;
  };

  /**
   * Add the given string to this set.
   *
   * @param String aStr
   */
  ArraySet.prototype.add = function ArraySet_add(aStr, aAllowDuplicates) {
    var isDuplicate = this.has(aStr);
    var idx = this._array.length;
    if (!isDuplicate || aAllowDuplicates) {
      this._array.push(aStr);
    }
    if (!isDuplicate) {
      this._set[util.toSetString(aStr)] = idx;
    }
  };

  /**
   * Is the given string a member of this set?
   *
   * @param String aStr
   */
  ArraySet.prototype.has = function ArraySet_has(aStr) {
    return Object.prototype.hasOwnProperty.call(this._set,
                                                util.toSetString(aStr));
  };

  /**
   * What is the index of the given string in the array?
   *
   * @param String aStr
   */
  ArraySet.prototype.indexOf = function ArraySet_indexOf(aStr) {
    if (this.has(aStr)) {
      return this._set[util.toSetString(aStr)];
    }
    throw new Error('"' + aStr + '" is not in the set.');
  };

  /**
   * What is the element at the given index?
   *
   * @param Number aIdx
   */
  ArraySet.prototype.at = function ArraySet_at(aIdx) {
    if (aIdx >= 0 && aIdx < this._array.length) {
      return this._array[aIdx];
    }
    throw new Error('No element indexed by ' + aIdx);
  };

  /**
   * Returns the array representation of this set (which has the proper indices
   * indicated by indexOf). Note that this is a copy of the internal array used
   * for storing the members so that no one can mess with internal state.
   */
  ArraySet.prototype.toArray = function ArraySet_toArray() {
    return this._array.slice();
  };

  exports.ArraySet = ArraySet;

 });

 },{"./util":18,"amdefine":19}],12:[function(_dereq_,module,exports){
 /* -*- Mode: js; js-indent-level: 2; -*- */
 /*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 *
 * Based on the Base 64 VLQ implementation in Closure Compiler:
 * https://code.google.com/p/closure-compiler/source/browse/trunk/src/com/google/debugging/sourcemap/Base64VLQ.java
 *
 * Copyright 2011 The Closure Compiler Authors. All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer in the documentation and/or other materials provided
 *    with the distribution.
 *  * Neither the name of Google Inc. nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 if (typeof define !== 'function') {
    var define = _dereq_('amdefine')(module, _dereq_);
 }
 define(function (_dereq_, exports, module) {

  var base64 = _dereq_('./base64');

  // A single base 64 digit can contain 6 bits of data. For the base 64 variable
  // length quantities we use in the source map spec, the first bit is the sign,
  // the next four bits are the actual value, and the 6th bit is the
  // continuation bit. The continuation bit tells us whether there are more
  // digits in this value following this digit.
  //
  //   Continuation
  //   |    Sign
  //   |    |
  //   V    V
  //   101011

  var VLQ_BASE_SHIFT = 5;

  // binary: 100000
  var VLQ_BASE = 1 << VLQ_BASE_SHIFT;

  // binary: 011111
  var VLQ_BASE_MASK = VLQ_BASE - 1;

  // binary: 100000
  var VLQ_CONTINUATION_BIT = VLQ_BASE;

  /**
   * Converts from a two-complement value to a value where the sign bit is
   * is placed in the least significant bit.  For example, as decimals:
   *   1 becomes 2 (10 binary), -1 becomes 3 (11 binary)
   *   2 becomes 4 (100 binary), -2 becomes 5 (101 binary)
   */
  function toVLQSigned(aValue) {
    return aValue < 0
      ? ((-aValue) << 1) + 1
      : (aValue << 1) + 0;
  }

  /**
   * Converts to a two-complement value from a value where the sign bit is
   * is placed in the least significant bit.  For example, as decimals:
   *   2 (10 binary) becomes 1, 3 (11 binary) becomes -1
   *   4 (100 binary) becomes 2, 5 (101 binary) becomes -2
   */
  function fromVLQSigned(aValue) {
    var isNegative = (aValue & 1) === 1;
    var shifted = aValue >> 1;
    return isNegative
      ? -shifted
      : shifted;
  }

  /**
   * Returns the base 64 VLQ encoded value.
   */
  exports.encode = function base64VLQ_encode(aValue) {
    var encoded = "";
    var digit;

    var vlq = toVLQSigned(aValue);

    do {
      digit = vlq & VLQ_BASE_MASK;
      vlq >>>= VLQ_BASE_SHIFT;
      if (vlq > 0) {
        // There are still more digits in this value, so we must make sure the
        // continuation bit is marked.
        digit |= VLQ_CONTINUATION_BIT;
      }
      encoded += base64.encode(digit);
    } while (vlq > 0);

    return encoded;
  };

  /**
   * Decodes the next base 64 VLQ value from the given string and returns the
   * value and the rest of the string.
   */
  exports.decode = function base64VLQ_decode(aStr) {
    var i = 0;
    var strLen = aStr.length;
    var result = 0;
    var shift = 0;
    var continuation, digit;

    do {
      if (i >= strLen) {
        throw new Error("Expected more digits in base 64 VLQ value.");
      }
      digit = base64.decode(aStr.charAt(i++));
      continuation = !!(digit & VLQ_CONTINUATION_BIT);
      digit &= VLQ_BASE_MASK;
      result = result + (digit << shift);
      shift += VLQ_BASE_SHIFT;
    } while (continuation);

    return {
      value: fromVLQSigned(result),
      rest: aStr.slice(i)
    };
  };

 });

 },{"./base64":13,"amdefine":19}],13:[function(_dereq_,module,exports){
 /* -*- Mode: js; js-indent-level: 2; -*- */
 /*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
 if (typeof define !== 'function') {
    var define = _dereq_('amdefine')(module, _dereq_);
 }
 define(function (_dereq_, exports, module) {

  var charToIntMap = {};
  var intToCharMap = {};

  'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
    .split('')
    .forEach(function (ch, index) {
      charToIntMap[ch] = index;
      intToCharMap[index] = ch;
    });

  /**
   * Encode an integer in the range of 0 to 63 to a single base 64 digit.
   */
  exports.encode = function base64_encode(aNumber) {
    if (aNumber in intToCharMap) {
      return intToCharMap[aNumber];
    }
    throw new TypeError("Must be between 0 and 63: " + aNumber);
  };

  /**
   * Decode a single base 64 digit to an integer.
   */
  exports.decode = function base64_decode(aChar) {
    if (aChar in charToIntMap) {
      return charToIntMap[aChar];
    }
    throw new TypeError("Not a valid base 64 digit: " + aChar);
  };

 });

 },{"amdefine":19}],14:[function(_dereq_,module,exports){
 /* -*- Mode: js; js-indent-level: 2; -*- */
 /*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
 if (typeof define !== 'function') {
    var define = _dereq_('amdefine')(module, _dereq_);
 }
 define(function (_dereq_, exports, module) {

  /**
   * Recursive implementation of binary search.
   *
   * @param aLow Indices here and lower do not contain the needle.
   * @param aHigh Indices here and higher do not contain the needle.
   * @param aNeedle The element being searched for.
   * @param aHaystack The non-empty array being searched.
   * @param aCompare Function which takes two elements and returns -1, 0, or 1.
   */
  function recursiveSearch(aLow, aHigh, aNeedle, aHaystack, aCompare) {
    // This function terminates when one of the following is true:
    //
    //   1. We find the exact element we are looking for.
    //
    //   2. We did not find the exact element, but we can return the next
    //      closest element that is less than that element.
    //
    //   3. We did not find the exact element, and there is no next-closest
    //      element which is less than the one we are searching for, so we
    //      return null.
    var mid = Math.floor((aHigh - aLow) / 2) + aLow;
    var cmp = aCompare(aNeedle, aHaystack[mid], true);
    if (cmp === 0) {
      // Found the element we are looking for.
      return aHaystack[mid];
    }
    else if (cmp > 0) {
      // aHaystack[mid] is greater than our needle.
      if (aHigh - mid > 1) {
        // The element is in the upper half.
        return recursiveSearch(mid, aHigh, aNeedle, aHaystack, aCompare);
      }
      // We did not find an exact match, return the next closest one
      // (termination case 2).
      return aHaystack[mid];
    }
    else {
      // aHaystack[mid] is less than our needle.
      if (mid - aLow > 1) {
        // The element is in the lower half.
        return recursiveSearch(aLow, mid, aNeedle, aHaystack, aCompare);
      }
      // The exact needle element was not found in this haystack. Determine if
      // we are in termination case (2) or (3) and return the appropriate thing.
      return aLow < 0
        ? null
        : aHaystack[aLow];
    }
  }

  /**
   * This is an implementation of binary search which will always try and return
   * the next lowest value checked if there is no exact hit. This is because
   * mappings between original and generated line/col pairs are single points,
   * and there is an implicit region between each of them, so a miss just means
   * that you aren't on the very start of a region.
   *
   * @param aNeedle The element you are looking for.
   * @param aHaystack The array that is being searched.
   * @param aCompare A function which takes the needle and an element in the
   *     array and returns -1, 0, or 1 depending on whether the needle is less
   *     than, equal to, or greater than the element, respectively.
   */
  exports.search = function search(aNeedle, aHaystack, aCompare) {
    return aHaystack.length > 0
      ? recursiveSearch(-1, aHaystack.length, aNeedle, aHaystack, aCompare)
      : null;
  };

 });

 },{"amdefine":19}],15:[function(_dereq_,module,exports){
 /* -*- Mode: js; js-indent-level: 2; -*- */
 /*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
 if (typeof define !== 'function') {
    var define = _dereq_('amdefine')(module, _dereq_);
 }
 define(function (_dereq_, exports, module) {

  var util = _dereq_('./util');
  var binarySearch = _dereq_('./binary-search');
  var ArraySet = _dereq_('./array-set').ArraySet;
  var base64VLQ = _dereq_('./base64-vlq');

  /**
   * A SourceMapConsumer instance represents a parsed source map which we can
   * query for information about the original file positions by giving it a file
   * position in the generated source.
   *
   * The only parameter is the raw source map (either as a JSON string, or
   * already parsed to an object). According to the spec, source maps have the
   * following attributes:
   *
   *   - version: Which version of the source map spec this map is following.
   *   - sources: An array of URLs to the original source files.
   *   - names: An array of identifiers which can be referrenced by individual mappings.
   *   - sourceRoot: Optional. The URL root from which all sources are relative.
   *   - sourcesContent: Optional. An array of contents of the original source files.
   *   - mappings: A string of base64 VLQs which contain the actual mappings.
   *   - file: The generated file this source map is associated with.
   *
   * Here is an example source map, taken from the source map spec[0]:
   *
   *     {
   *       version : 3,
   *       file: "out.js",
   *       sourceRoot : "",
   *       sources: ["foo.js", "bar.js"],
   *       names: ["src", "maps", "are", "fun"],
   *       mappings: "AA,AB;;ABCDE;"
   *     }
   *
   * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit?pli=1#
   */
  function SourceMapConsumer(aSourceMap) {
    var sourceMap = aSourceMap;
    if (typeof aSourceMap === 'string') {
      sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
    }

    var version = util.getArg(sourceMap, 'version');
    var sources = util.getArg(sourceMap, 'sources');
    // Sass 3.3 leaves out the 'names' array, so we deviate from the spec (which
    // requires the array) to play nice here.
    var names = util.getArg(sourceMap, 'names', []);
    var sourceRoot = util.getArg(sourceMap, 'sourceRoot', null);
    var sourcesContent = util.getArg(sourceMap, 'sourcesContent', null);
    var mappings = util.getArg(sourceMap, 'mappings');
    var file = util.getArg(sourceMap, 'file', null);

    // Once again, Sass deviates from the spec and supplies the version as a
    // string rather than a number, so we use loose equality checking here.
    if (version != this._version) {
      throw new Error('Unsupported version: ' + version);
    }

    // Pass `true` below to allow duplicate names and sources. While source maps
    // are intended to be compressed and deduplicated, the TypeScript compiler
    // sometimes generates source maps with duplicates in them. See Github issue
    // #72 and bugzil.la/889492.
    this._names = ArraySet.fromArray(names, true);
    this._sources = ArraySet.fromArray(sources, true);

    this.sourceRoot = sourceRoot;
    this.sourcesContent = sourcesContent;
    this._mappings = mappings;
    this.file = file;
  }

  /**
   * Create a SourceMapConsumer from a SourceMapGenerator.
   *
   * @param SourceMapGenerator aSourceMap
   *        The source map that will be consumed.
   * @returns SourceMapConsumer
   */
  SourceMapConsumer.fromSourceMap =
    function SourceMapConsumer_fromSourceMap(aSourceMap) {
      var smc = Object.create(SourceMapConsumer.prototype);

      smc._names = ArraySet.fromArray(aSourceMap._names.toArray(), true);
      smc._sources = ArraySet.fromArray(aSourceMap._sources.toArray(), true);
      smc.sourceRoot = aSourceMap._sourceRoot;
      smc.sourcesContent = aSourceMap._generateSourcesContent(smc._sources.toArray(),
                                                              smc.sourceRoot);
      smc.file = aSourceMap._file;

      smc.__generatedMappings = aSourceMap._mappings.slice()
        .sort(util.compareByGeneratedPositions);
      smc.__originalMappings = aSourceMap._mappings.slice()
        .sort(util.compareByOriginalPositions);

      return smc;
    };

  /**
   * The version of the source mapping spec that we are consuming.
   */
  SourceMapConsumer.prototype._version = 3;

  /**
   * The list of original sources.
   */
  Object.defineProperty(SourceMapConsumer.prototype, 'sources', {
    get: function () {
      return this._sources.toArray().map(function (s) {
        return this.sourceRoot ? util.join(this.sourceRoot, s) : s;
      }, this);
    }
  });

  // `__generatedMappings` and `__originalMappings` are arrays that hold the
  // parsed mapping coordinates from the source map's "mappings" attribute. They
  // are lazily instantiated, accessed via the `_generatedMappings` and
  // `_originalMappings` getters respectively, and we only parse the mappings
  // and create these arrays once queried for a source location. We jump through
  // these hoops because there can be many thousands of mappings, and parsing
  // them is expensive, so we only want to do it if we must.
  //
  // Each object in the arrays is of the form:
  //
  //     {
  //       generatedLine: The line number in the generated code,
  //       generatedColumn: The column number in the generated code,
  //       source: The path to the original source file that generated this
  //               chunk of code,
  //       originalLine: The line number in the original source that
  //                     corresponds to this chunk of generated code,
  //       originalColumn: The column number in the original source that
  //                       corresponds to this chunk of generated code,
  //       name: The name of the original symbol which generated this chunk of
  //             code.
  //     }
  //
  // All properties except for `generatedLine` and `generatedColumn` can be
  // `null`.
  //
  // `_generatedMappings` is ordered by the generated positions.
  //
  // `_originalMappings` is ordered by the original positions.

  SourceMapConsumer.prototype.__generatedMappings = null;
  Object.defineProperty(SourceMapConsumer.prototype, '_generatedMappings', {
    get: function () {
      if (!this.__generatedMappings) {
        this.__generatedMappings = [];
        this.__originalMappings = [];
        this._parseMappings(this._mappings, this.sourceRoot);
      }

      return this.__generatedMappings;
    }
  });

  SourceMapConsumer.prototype.__originalMappings = null;
  Object.defineProperty(SourceMapConsumer.prototype, '_originalMappings', {
    get: function () {
      if (!this.__originalMappings) {
        this.__generatedMappings = [];
        this.__originalMappings = [];
        this._parseMappings(this._mappings, this.sourceRoot);
      }

      return this.__originalMappings;
    }
  });

  /**
   * Parse the mappings in a string in to a data structure which we can easily
   * query (the ordered arrays in the `this.__generatedMappings` and
   * `this.__originalMappings` properties).
   */
  SourceMapConsumer.prototype._parseMappings =
    function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
      var generatedLine = 1;
      var previousGeneratedColumn = 0;
      var previousOriginalLine = 0;
      var previousOriginalColumn = 0;
      var previousSource = 0;
      var previousName = 0;
      var mappingSeparator = /^[,;]/;
      var str = aStr;
      var mapping;
      var temp;

      while (str.length > 0) {
        if (str.charAt(0) === ';') {
          generatedLine++;
          str = str.slice(1);
          previousGeneratedColumn = 0;
        }
        else if (str.charAt(0) === ',') {
          str = str.slice(1);
        }
        else {
          mapping = {};
          mapping.generatedLine = generatedLine;

          // Generated column.
          temp = base64VLQ.decode(str);
          mapping.generatedColumn = previousGeneratedColumn + temp.value;
          previousGeneratedColumn = mapping.generatedColumn;
          str = temp.rest;

          if (str.length > 0 && !mappingSeparator.test(str.charAt(0))) {
            // Original source.
            temp = base64VLQ.decode(str);
            mapping.source = this._sources.at(previousSource + temp.value);
            previousSource += temp.value;
            str = temp.rest;
            if (str.length === 0 || mappingSeparator.test(str.charAt(0))) {
              throw new Error('Found a source, but no line and column');
            }

            // Original line.
            temp = base64VLQ.decode(str);
            mapping.originalLine = previousOriginalLine + temp.value;
            previousOriginalLine = mapping.originalLine;
            // Lines are stored 0-based
            mapping.originalLine += 1;
            str = temp.rest;
            if (str.length === 0 || mappingSeparator.test(str.charAt(0))) {
              throw new Error('Found a source and line, but no column');
            }

            // Original column.
            temp = base64VLQ.decode(str);
            mapping.originalColumn = previousOriginalColumn + temp.value;
            previousOriginalColumn = mapping.originalColumn;
            str = temp.rest;

            if (str.length > 0 && !mappingSeparator.test(str.charAt(0))) {
              // Original name.
              temp = base64VLQ.decode(str);
              mapping.name = this._names.at(previousName + temp.value);
              previousName += temp.value;
              str = temp.rest;
            }
          }

          this.__generatedMappings.push(mapping);
          if (typeof mapping.originalLine === 'number') {
            this.__originalMappings.push(mapping);
          }
        }
      }

      this.__originalMappings.sort(util.compareByOriginalPositions);
    };

  /**
   * Find the mapping that best matches the hypothetical "needle" mapping that
   * we are searching for in the given "haystack" of mappings.
   */
  SourceMapConsumer.prototype._findMapping =
    function SourceMapConsumer_findMapping(aNeedle, aMappings, aLineName,
                                           aColumnName, aComparator) {
      // To return the position we are searching for, we must first find the
      // mapping for the given position and then return the opposite position it
      // points to. Because the mappings are sorted, we can use binary search to
      // find the best mapping.

      if (aNeedle[aLineName] <= 0) {
        throw new TypeError('Line must be greater than or equal to 1, got '
                            + aNeedle[aLineName]);
      }
      if (aNeedle[aColumnName] < 0) {
        throw new TypeError('Column must be greater than or equal to 0, got '
                            + aNeedle[aColumnName]);
      }

      return binarySearch.search(aNeedle, aMappings, aComparator);
    };

  /**
   * Returns the original source, line, and column information for the generated
   * source's line and column positions provided. The only argument is an object
   * with the following properties:
   *
   *   - line: The line number in the generated source.
   *   - column: The column number in the generated source.
   *
   * and an object is returned with the following properties:
   *
   *   - source: The original source file, or null.
   *   - line: The line number in the original source, or null.
   *   - column: The column number in the original source, or null.
   *   - name: The original identifier, or null.
   */
  SourceMapConsumer.prototype.originalPositionFor =
    function SourceMapConsumer_originalPositionFor(aArgs) {
      var needle = {
        generatedLine: util.getArg(aArgs, 'line'),
        generatedColumn: util.getArg(aArgs, 'column')
      };

      var mapping = this._findMapping(needle,
                                      this._generatedMappings,
                                      "generatedLine",
                                      "generatedColumn",
                                      util.compareByGeneratedPositions);

      if (mapping) {
        var source = util.getArg(mapping, 'source', null);
        if (source && this.sourceRoot) {
          source = util.join(this.sourceRoot, source);
        }
        return {
          source: source,
          line: util.getArg(mapping, 'originalLine', null),
          column: util.getArg(mapping, 'originalColumn', null),
          name: util.getArg(mapping, 'name', null)
        };
      }

      return {
        source: null,
        line: null,
        column: null,
        name: null
      };
    };

  /**
   * Returns the original source content. The only argument is the url of the
   * original source file. Returns null if no original source content is
   * availible.
   */
  SourceMapConsumer.prototype.sourceContentFor =
    function SourceMapConsumer_sourceContentFor(aSource) {
      if (!this.sourcesContent) {
        return null;
      }

      if (this.sourceRoot) {
        aSource = util.relative(this.sourceRoot, aSource);
      }

      if (this._sources.has(aSource)) {
        return this.sourcesContent[this._sources.indexOf(aSource)];
      }

      var url;
      if (this.sourceRoot
          && (url = util.urlParse(this.sourceRoot))) {
        // XXX: file:// URIs and absolute paths lead to unexpected behavior for
        // many users. We can help them out when they expect file:// URIs to
        // behave like it would if they were running a local HTTP server. See
        // https://bugzilla.mozilla.org/show_bug.cgi?id=885597.
        var fileUriAbsPath = aSource.replace(/^file:\/\//, "");
        if (url.scheme == "file"
            && this._sources.has(fileUriAbsPath)) {
          return this.sourcesContent[this._sources.indexOf(fileUriAbsPath)]
        }

        if ((!url.path || url.path == "/")
            && this._sources.has("/" + aSource)) {
          return this.sourcesContent[this._sources.indexOf("/" + aSource)];
        }
      }

      throw new Error('"' + aSource + '" is not in the SourceMap.');
    };

  /**
   * Returns the generated line and column information for the original source,
   * line, and column positions provided. The only argument is an object with
   * the following properties:
   *
   *   - source: The filename of the original source.
   *   - line: The line number in the original source.
   *   - column: The column number in the original source.
   *
   * and an object is returned with the following properties:
   *
   *   - line: The line number in the generated source, or null.
   *   - column: The column number in the generated source, or null.
   */
  SourceMapConsumer.prototype.generatedPositionFor =
    function SourceMapConsumer_generatedPositionFor(aArgs) {
      var needle = {
        source: util.getArg(aArgs, 'source'),
        originalLine: util.getArg(aArgs, 'line'),
        originalColumn: util.getArg(aArgs, 'column')
      };

      if (this.sourceRoot) {
        needle.source = util.relative(this.sourceRoot, needle.source);
      }

      var mapping = this._findMapping(needle,
                                      this._originalMappings,
                                      "originalLine",
                                      "originalColumn",
                                      util.compareByOriginalPositions);

      if (mapping) {
        return {
          line: util.getArg(mapping, 'generatedLine', null),
          column: util.getArg(mapping, 'generatedColumn', null)
        };
      }

      return {
        line: null,
        column: null
      };
    };

  SourceMapConsumer.GENERATED_ORDER = 1;
  SourceMapConsumer.ORIGINAL_ORDER = 2;

  /**
   * Iterate over each mapping between an original source/line/column and a
   * generated line/column in this source map.
   *
   * @param Function aCallback
   *        The function that is called with each mapping.
   * @param Object aContext
   *        Optional. If specified, this object will be the value of `this` every
   *        time that `aCallback` is called.
   * @param aOrder
   *        Either `SourceMapConsumer.GENERATED_ORDER` or
   *        `SourceMapConsumer.ORIGINAL_ORDER`. Specifies whether you want to
   *        iterate over the mappings sorted by the generated file's line/column
   *        order or the original's source/line/column order, respectively. Defaults to
   *        `SourceMapConsumer.GENERATED_ORDER`.
   */
  SourceMapConsumer.prototype.eachMapping =
    function SourceMapConsumer_eachMapping(aCallback, aContext, aOrder) {
      var context = aContext || null;
      var order = aOrder || SourceMapConsumer.GENERATED_ORDER;

      var mappings;
      switch (order) {
      case SourceMapConsumer.GENERATED_ORDER:
        mappings = this._generatedMappings;
        break;
      case SourceMapConsumer.ORIGINAL_ORDER:
        mappings = this._originalMappings;
        break;
      default:
        throw new Error("Unknown order of iteration.");
      }

      var sourceRoot = this.sourceRoot;
      mappings.map(function (mapping) {
        var source = mapping.source;
        if (source && sourceRoot) {
          source = util.join(sourceRoot, source);
        }
        return {
          source: source,
          generatedLine: mapping.generatedLine,
          generatedColumn: mapping.generatedColumn,
          originalLine: mapping.originalLine,
          originalColumn: mapping.originalColumn,
          name: mapping.name
        };
      }).forEach(aCallback, context);
    };

  exports.SourceMapConsumer = SourceMapConsumer;

 });

 },{"./array-set":11,"./base64-vlq":12,"./binary-search":14,"./util":18,"amdefine":19}],16:[function(_dereq_,module,exports){
 /* -*- Mode: js; js-indent-level: 2; -*- */
 /*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
 if (typeof define !== 'function') {
    var define = _dereq_('amdefine')(module, _dereq_);
 }
 define(function (_dereq_, exports, module) {

  var base64VLQ = _dereq_('./base64-vlq');
  var util = _dereq_('./util');
  var ArraySet = _dereq_('./array-set').ArraySet;

  /**
   * An instance of the SourceMapGenerator represents a source map which is
   * being built incrementally. To create a new one, you must pass an object
   * with the following properties:
   *
   *   - file: The filename of the generated source.
   *   - sourceRoot: An optional root for all URLs in this source map.
   */
  function SourceMapGenerator(aArgs) {
    this._file = util.getArg(aArgs, 'file');
    this._sourceRoot = util.getArg(aArgs, 'sourceRoot', null);
    this._sources = new ArraySet();
    this._names = new ArraySet();
    this._mappings = [];
    this._sourcesContents = null;
  }

  SourceMapGenerator.prototype._version = 3;

  /**
   * Creates a new SourceMapGenerator based on a SourceMapConsumer
   *
   * @param aSourceMapConsumer The SourceMap.
   */
  SourceMapGenerator.fromSourceMap =
    function SourceMapGenerator_fromSourceMap(aSourceMapConsumer) {
      var sourceRoot = aSourceMapConsumer.sourceRoot;
      var generator = new SourceMapGenerator({
        file: aSourceMapConsumer.file,
        sourceRoot: sourceRoot
      });
      aSourceMapConsumer.eachMapping(function (mapping) {
        var newMapping = {
          generated: {
            line: mapping.generatedLine,
            column: mapping.generatedColumn
          }
        };

        if (mapping.source) {
          newMapping.source = mapping.source;
          if (sourceRoot) {
            newMapping.source = util.relative(sourceRoot, newMapping.source);
          }

          newMapping.original = {
            line: mapping.originalLine,
            column: mapping.originalColumn
          };

          if (mapping.name) {
            newMapping.name = mapping.name;
          }
        }

        generator.addMapping(newMapping);
      });
      aSourceMapConsumer.sources.forEach(function (sourceFile) {
        var content = aSourceMapConsumer.sourceContentFor(sourceFile);
        if (content) {
          generator.setSourceContent(sourceFile, content);
        }
      });
      return generator;
    };

  /**
   * Add a single mapping from original source line and column to the generated
   * source's line and column for this source map being created. The mapping
   * object should have the following properties:
   *
   *   - generated: An object with the generated line and column positions.
   *   - original: An object with the original line and column positions.
   *   - source: The original source file (relative to the sourceRoot).
   *   - name: An optional original token name for this mapping.
   */
  SourceMapGenerator.prototype.addMapping =
    function SourceMapGenerator_addMapping(aArgs) {
      var generated = util.getArg(aArgs, 'generated');
      var original = util.getArg(aArgs, 'original', null);
      var source = util.getArg(aArgs, 'source', null);
      var name = util.getArg(aArgs, 'name', null);

      this._validateMapping(generated, original, source, name);

      if (source && !this._sources.has(source)) {
        this._sources.add(source);
      }

      if (name && !this._names.has(name)) {
        this._names.add(name);
      }

      this._mappings.push({
        generatedLine: generated.line,
        generatedColumn: generated.column,
        originalLine: original != null && original.line,
        originalColumn: original != null && original.column,
        source: source,
        name: name
      });
    };

  /**
   * Set the source content for a source file.
   */
  SourceMapGenerator.prototype.setSourceContent =
    function SourceMapGenerator_setSourceContent(aSourceFile, aSourceContent) {
      var source = aSourceFile;
      if (this._sourceRoot) {
        source = util.relative(this._sourceRoot, source);
      }

      if (aSourceContent !== null) {
        // Add the source content to the _sourcesContents map.
        // Create a new _sourcesContents map if the property is null.
        if (!this._sourcesContents) {
          this._sourcesContents = {};
        }
        this._sourcesContents[util.toSetString(source)] = aSourceContent;
      } else {
        // Remove the source file from the _sourcesContents map.
        // If the _sourcesContents map is empty, set the property to null.
        delete this._sourcesContents[util.toSetString(source)];
        if (Object.keys(this._sourcesContents).length === 0) {
          this._sourcesContents = null;
        }
      }
    };

  /**
   * Applies the mappings of a sub-source-map for a specific source file to the
   * source map being generated. Each mapping to the supplied source file is
   * rewritten using the supplied source map. Note: The resolution for the
   * resulting mappings is the minimium of this map and the supplied map.
   *
   * @param aSourceMapConsumer The source map to be applied.
   * @param aSourceFile Optional. The filename of the source file.
   *        If omitted, SourceMapConsumer's file property will be used.
   */
  SourceMapGenerator.prototype.applySourceMap =
    function SourceMapGenerator_applySourceMap(aSourceMapConsumer, aSourceFile) {
      // If aSourceFile is omitted, we will use the file property of the SourceMap
      if (!aSourceFile) {
        aSourceFile = aSourceMapConsumer.file;
      }
      var sourceRoot = this._sourceRoot;
      // Make "aSourceFile" relative if an absolute Url is passed.
      if (sourceRoot) {
        aSourceFile = util.relative(sourceRoot, aSourceFile);
      }
      // Applying the SourceMap can add and remove items from the sources and
      // the names array.
      var newSources = new ArraySet();
      var newNames = new ArraySet();

      // Find mappings for the "aSourceFile"
      this._mappings.forEach(function (mapping) {
        if (mapping.source === aSourceFile && mapping.originalLine) {
          // Check if it can be mapped by the source map, then update the mapping.
          var original = aSourceMapConsumer.originalPositionFor({
            line: mapping.originalLine,
            column: mapping.originalColumn
          });
          if (original.source !== null) {
            // Copy mapping
            if (sourceRoot) {
              mapping.source = util.relative(sourceRoot, original.source);
            } else {
              mapping.source = original.source;
            }
            mapping.originalLine = original.line;
            mapping.originalColumn = original.column;
            if (original.name !== null && mapping.name !== null) {
              // Only use the identifier name if it's an identifier
              // in both SourceMaps
              mapping.name = original.name;
            }
          }
        }

        var source = mapping.source;
        if (source && !newSources.has(source)) {
          newSources.add(source);
        }

        var name = mapping.name;
        if (name && !newNames.has(name)) {
          newNames.add(name);
        }

      }, this);
      this._sources = newSources;
      this._names = newNames;

      // Copy sourcesContents of applied map.
      aSourceMapConsumer.sources.forEach(function (sourceFile) {
        var content = aSourceMapConsumer.sourceContentFor(sourceFile);
        if (content) {
          if (sourceRoot) {
            sourceFile = util.relative(sourceRoot, sourceFile);
          }
          this.setSourceContent(sourceFile, content);
        }
      }, this);
    };

  /**
   * A mapping can have one of the three levels of data:
   *
   *   1. Just the generated position.
   *   2. The Generated position, original position, and original source.
   *   3. Generated and original position, original source, as well as a name
   *      token.
   *
   * To maintain consistency, we validate that any new mapping being added falls
   * in to one of these categories.
   */
  SourceMapGenerator.prototype._validateMapping =
    function SourceMapGenerator_validateMapping(aGenerated, aOriginal, aSource,
                                                aName) {
      if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
          && aGenerated.line > 0 && aGenerated.column >= 0
          && !aOriginal && !aSource && !aName) {
        // Case 1.
        return;
      }
      else if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
               && aOriginal && 'line' in aOriginal && 'column' in aOriginal
               && aGenerated.line > 0 && aGenerated.column >= 0
               && aOriginal.line > 0 && aOriginal.column >= 0
               && aSource) {
        // Cases 2 and 3.
        return;
      }
      else {
        throw new Error('Invalid mapping: ' + JSON.stringify({
          generated: aGenerated,
          source: aSource,
          orginal: aOriginal,
          name: aName
        }));
      }
    };

  /**
   * Serialize the accumulated mappings in to the stream of base 64 VLQs
   * specified by the source map format.
   */
  SourceMapGenerator.prototype._serializeMappings =
    function SourceMapGenerator_serializeMappings() {
      var previousGeneratedColumn = 0;
      var previousGeneratedLine = 1;
      var previousOriginalColumn = 0;
      var previousOriginalLine = 0;
      var previousName = 0;
      var previousSource = 0;
      var result = '';
      var mapping;

      // The mappings must be guaranteed to be in sorted order before we start
      // serializing them or else the generated line numbers (which are defined
      // via the ';' separators) will be all messed up. Note: it might be more
      // performant to maintain the sorting as we insert them, rather than as we
      // serialize them, but the big O is the same either way.
      this._mappings.sort(util.compareByGeneratedPositions);

      for (var i = 0, len = this._mappings.length; i < len; i++) {
        mapping = this._mappings[i];

        if (mapping.generatedLine !== previousGeneratedLine) {
          previousGeneratedColumn = 0;
          while (mapping.generatedLine !== previousGeneratedLine) {
            result += ';';
            previousGeneratedLine++;
          }
        }
        else {
          if (i > 0) {
            if (!util.compareByGeneratedPositions(mapping, this._mappings[i - 1])) {
              continue;
            }
            result += ',';
          }
        }

        result += base64VLQ.encode(mapping.generatedColumn
                                   - previousGeneratedColumn);
        previousGeneratedColumn = mapping.generatedColumn;

        if (mapping.source) {
          result += base64VLQ.encode(this._sources.indexOf(mapping.source)
                                     - previousSource);
          previousSource = this._sources.indexOf(mapping.source);

          // lines are stored 0-based in SourceMap spec version 3
          result += base64VLQ.encode(mapping.originalLine - 1
                                     - previousOriginalLine);
          previousOriginalLine = mapping.originalLine - 1;

          result += base64VLQ.encode(mapping.originalColumn
                                     - previousOriginalColumn);
          previousOriginalColumn = mapping.originalColumn;

          if (mapping.name) {
            result += base64VLQ.encode(this._names.indexOf(mapping.name)
                                       - previousName);
            previousName = this._names.indexOf(mapping.name);
          }
        }
      }

      return result;
    };

  SourceMapGenerator.prototype._generateSourcesContent =
    function SourceMapGenerator_generateSourcesContent(aSources, aSourceRoot) {
      return aSources.map(function (source) {
        if (!this._sourcesContents) {
          return null;
        }
        if (aSourceRoot) {
          source = util.relative(aSourceRoot, source);
        }
        var key = util.toSetString(source);
        return Object.prototype.hasOwnProperty.call(this._sourcesContents,
                                                    key)
          ? this._sourcesContents[key]
          : null;
      }, this);
    };

  /**
   * Externalize the source map.
   */
  SourceMapGenerator.prototype.toJSON =
    function SourceMapGenerator_toJSON() {
      var map = {
        version: this._version,
        file: this._file,
        sources: this._sources.toArray(),
        names: this._names.toArray(),
        mappings: this._serializeMappings()
      };
      if (this._sourceRoot) {
        map.sourceRoot = this._sourceRoot;
      }
      if (this._sourcesContents) {
        map.sourcesContent = this._generateSourcesContent(map.sources, map.sourceRoot);
      }

      return map;
    };

  /**
   * Render the source map being generated to a string.
   */
  SourceMapGenerator.prototype.toString =
    function SourceMapGenerator_toString() {
      return JSON.stringify(this);
    };

  exports.SourceMapGenerator = SourceMapGenerator;

 });

 },{"./array-set":11,"./base64-vlq":12,"./util":18,"amdefine":19}],17:[function(_dereq_,module,exports){
 /* -*- Mode: js; js-indent-level: 2; -*- */
 /*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
 if (typeof define !== 'function') {
    var define = _dereq_('amdefine')(module, _dereq_);
 }
 define(function (_dereq_, exports, module) {

  var SourceMapGenerator = _dereq_('./source-map-generator').SourceMapGenerator;
  var util = _dereq_('./util');

  /**
   * SourceNodes provide a way to abstract over interpolating/concatenating
   * snippets of generated JavaScript source code while maintaining the line and
   * column information associated with the original source code.
   *
   * @param aLine The original line number.
   * @param aColumn The original column number.
   * @param aSource The original source's filename.
   * @param aChunks Optional. An array of strings which are snippets of
   *        generated JS, or other SourceNodes.
   * @param aName The original identifier.
   */
  function SourceNode(aLine, aColumn, aSource, aChunks, aName) {
    this.children = [];
    this.sourceContents = {};
    this.line = aLine === undefined ? null : aLine;
    this.column = aColumn === undefined ? null : aColumn;
    this.source = aSource === undefined ? null : aSource;
    this.name = aName === undefined ? null : aName;
    if (aChunks != null) this.add(aChunks);
  }

  /**
   * Creates a SourceNode from generated code and a SourceMapConsumer.
   *
   * @param aGeneratedCode The generated code
   * @param aSourceMapConsumer The SourceMap for the generated code
   */
  SourceNode.fromStringWithSourceMap =
    function SourceNode_fromStringWithSourceMap(aGeneratedCode, aSourceMapConsumer) {
      // The SourceNode we want to fill with the generated code
      // and the SourceMap
      var node = new SourceNode();

      // The generated code
      // Processed fragments are removed from this array.
      var remainingLines = aGeneratedCode.split('\n');

      // We need to remember the position of "remainingLines"
      var lastGeneratedLine = 1, lastGeneratedColumn = 0;

      // The generate SourceNodes we need a code range.
      // To extract it current and last mapping is used.
      // Here we store the last mapping.
      var lastMapping = null;

      aSourceMapConsumer.eachMapping(function (mapping) {
        if (lastMapping === null) {
          // We add the generated code until the first mapping
          // to the SourceNode without any mapping.
          // Each line is added as separate string.
          while (lastGeneratedLine < mapping.generatedLine) {
            node.add(remainingLines.shift() + "\n");
            lastGeneratedLine++;
          }
          if (lastGeneratedColumn < mapping.generatedColumn) {
            var nextLine = remainingLines[0];
            node.add(nextLine.substr(0, mapping.generatedColumn));
            remainingLines[0] = nextLine.substr(mapping.generatedColumn);
            lastGeneratedColumn = mapping.generatedColumn;
          }
        } else {
          // We add the code from "lastMapping" to "mapping":
          // First check if there is a new line in between.
          if (lastGeneratedLine < mapping.generatedLine) {
            var code = "";
            // Associate full lines with "lastMapping"
            do {
              code += remainingLines.shift() + "\n";
              lastGeneratedLine++;
              lastGeneratedColumn = 0;
            } while (lastGeneratedLine < mapping.generatedLine);
            // When we reached the correct line, we add code until we
            // reach the correct column too.
            if (lastGeneratedColumn < mapping.generatedColumn) {
              var nextLine = remainingLines[0];
              code += nextLine.substr(0, mapping.generatedColumn);
              remainingLines[0] = nextLine.substr(mapping.generatedColumn);
              lastGeneratedColumn = mapping.generatedColumn;
            }
            // Create the SourceNode.
            addMappingWithCode(lastMapping, code);
          } else {
            // There is no new line in between.
            // Associate the code between "lastGeneratedColumn" and
            // "mapping.generatedColumn" with "lastMapping"
            var nextLine = remainingLines[0];
            var code = nextLine.substr(0, mapping.generatedColumn -
                                          lastGeneratedColumn);
            remainingLines[0] = nextLine.substr(mapping.generatedColumn -
                                                lastGeneratedColumn);
            lastGeneratedColumn = mapping.generatedColumn;
            addMappingWithCode(lastMapping, code);
          }
        }
        lastMapping = mapping;
      }, this);
      // We have processed all mappings.
      // Associate the remaining code in the current line with "lastMapping"
      // and add the remaining lines without any mapping
      addMappingWithCode(lastMapping, remainingLines.join("\n"));

      // Copy sourcesContent into SourceNode
      aSourceMapConsumer.sources.forEach(function (sourceFile) {
        var content = aSourceMapConsumer.sourceContentFor(sourceFile);
        if (content) {
          node.setSourceContent(sourceFile, content);
        }
      });

      return node;

      function addMappingWithCode(mapping, code) {
        if (mapping === null || mapping.source === undefined) {
          node.add(code);
        } else {
          node.add(new SourceNode(mapping.originalLine,
                                  mapping.originalColumn,
                                  mapping.source,
                                  code,
                                  mapping.name));
        }
      }
    };

  /**
   * Add a chunk of generated JS to this source node.
   *
   * @param aChunk A string snippet of generated JS code, another instance of
   *        SourceNode, or an array where each member is one of those things.
   */
  SourceNode.prototype.add = function SourceNode_add(aChunk) {
    if (Array.isArray(aChunk)) {
      aChunk.forEach(function (chunk) {
        this.add(chunk);
      }, this);
    }
    else if (aChunk instanceof SourceNode || typeof aChunk === "string") {
      if (aChunk) {
        this.children.push(aChunk);
      }
    }
    else {
      throw new TypeError(
        "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
      );
    }
    return this;
  };

  /**
   * Add a chunk of generated JS to the beginning of this source node.
   *
   * @param aChunk A string snippet of generated JS code, another instance of
   *        SourceNode, or an array where each member is one of those things.
   */
  SourceNode.prototype.prepend = function SourceNode_prepend(aChunk) {
    if (Array.isArray(aChunk)) {
      for (var i = aChunk.length-1; i >= 0; i--) {
        this.prepend(aChunk[i]);
      }
    }
    else if (aChunk instanceof SourceNode || typeof aChunk === "string") {
      this.children.unshift(aChunk);
    }
    else {
      throw new TypeError(
        "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
      );
    }
    return this;
  };

  /**
   * Walk over the tree of JS snippets in this node and its children. The
   * walking function is called once for each snippet of JS and is passed that
   * snippet and the its original associated source's line/column location.
   *
   * @param aFn The traversal function.
   */
  SourceNode.prototype.walk = function SourceNode_walk(aFn) {
    var chunk;
    for (var i = 0, len = this.children.length; i < len; i++) {
      chunk = this.children[i];
      if (chunk instanceof SourceNode) {
        chunk.walk(aFn);
      }
      else {
        if (chunk !== '') {
          aFn(chunk, { source: this.source,
                       line: this.line,
                       column: this.column,
                       name: this.name });
        }
      }
    }
  };

  /**
   * Like `String.prototype.join` except for SourceNodes. Inserts `aStr` between
   * each of `this.children`.
   *
   * @param aSep The separator.
   */
  SourceNode.prototype.join = function SourceNode_join(aSep) {
    var newChildren;
    var i;
    var len = this.children.length;
    if (len > 0) {
      newChildren = [];
      for (i = 0; i < len-1; i++) {
        newChildren.push(this.children[i]);
        newChildren.push(aSep);
      }
      newChildren.push(this.children[i]);
      this.children = newChildren;
    }
    return this;
  };

  /**
   * Call String.prototype.replace on the very right-most source snippet. Useful
   * for trimming whitespace from the end of a source node, etc.
   *
   * @param aPattern The pattern to replace.
   * @param aReplacement The thing to replace the pattern with.
   */
  SourceNode.prototype.replaceRight = function SourceNode_replaceRight(aPattern, aReplacement) {
    var lastChild = this.children[this.children.length - 1];
    if (lastChild instanceof SourceNode) {
      lastChild.replaceRight(aPattern, aReplacement);
    }
    else if (typeof lastChild === 'string') {
      this.children[this.children.length - 1] = lastChild.replace(aPattern, aReplacement);
    }
    else {
      this.children.push(''.replace(aPattern, aReplacement));
    }
    return this;
  };

  /**
   * Set the source content for a source file. This will be added to the SourceMapGenerator
   * in the sourcesContent field.
   *
   * @param aSourceFile The filename of the source file
   * @param aSourceContent The content of the source file
   */
  SourceNode.prototype.setSourceContent =
    function SourceNode_setSourceContent(aSourceFile, aSourceContent) {
      this.sourceContents[util.toSetString(aSourceFile)] = aSourceContent;
    };

  /**
   * Walk over the tree of SourceNodes. The walking function is called for each
   * source file content and is passed the filename and source content.
   *
   * @param aFn The traversal function.
   */
  SourceNode.prototype.walkSourceContents =
    function SourceNode_walkSourceContents(aFn) {
      for (var i = 0, len = this.children.length; i < len; i++) {
        if (this.children[i] instanceof SourceNode) {
          this.children[i].walkSourceContents(aFn);
        }
      }

      var sources = Object.keys(this.sourceContents);
      for (var i = 0, len = sources.length; i < len; i++) {
        aFn(util.fromSetString(sources[i]), this.sourceContents[sources[i]]);
      }
    };

  /**
   * Return the string representation of this source node. Walks over the tree
   * and concatenates all the various snippets together to one string.
   */
  SourceNode.prototype.toString = function SourceNode_toString() {
    var str = "";
    this.walk(function (chunk) {
      str += chunk;
    });
    return str;
  };

  /**
   * Returns the string representation of this source node along with a source
   * map.
   */
  SourceNode.prototype.toStringWithSourceMap = function SourceNode_toStringWithSourceMap(aArgs) {
    var generated = {
      code: "",
      line: 1,
      column: 0
    };
    var map = new SourceMapGenerator(aArgs);
    var sourceMappingActive = false;
    var lastOriginalSource = null;
    var lastOriginalLine = null;
    var lastOriginalColumn = null;
    var lastOriginalName = null;
    this.walk(function (chunk, original) {
      generated.code += chunk;
      if (original.source !== null
          && original.line !== null
          && original.column !== null) {
        if(lastOriginalSource !== original.source
           || lastOriginalLine !== original.line
           || lastOriginalColumn !== original.column
           || lastOriginalName !== original.name) {
          map.addMapping({
            source: original.source,
            original: {
              line: original.line,
              column: original.column
            },
            generated: {
              line: generated.line,
              column: generated.column
            },
            name: original.name
          });
        }
        lastOriginalSource = original.source;
        lastOriginalLine = original.line;
        lastOriginalColumn = original.column;
        lastOriginalName = original.name;
        sourceMappingActive = true;
      } else if (sourceMappingActive) {
        map.addMapping({
          generated: {
            line: generated.line,
            column: generated.column
          }
        });
        lastOriginalSource = null;
        sourceMappingActive = false;
      }
      chunk.split('').forEach(function (ch) {
        if (ch === '\n') {
          generated.line++;
          generated.column = 0;
        } else {
          generated.column++;
        }
      });
    });
    this.walkSourceContents(function (sourceFile, sourceContent) {
      map.setSourceContent(sourceFile, sourceContent);
    });

    return { code: generated.code, map: map };
  };

  exports.SourceNode = SourceNode;

 });

 },{"./source-map-generator":16,"./util":18,"amdefine":19}],18:[function(_dereq_,module,exports){
 /* -*- Mode: js; js-indent-level: 2; -*- */
 /*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
 if (typeof define !== 'function') {
    var define = _dereq_('amdefine')(module, _dereq_);
 }
 define(function (_dereq_, exports, module) {

  /**
   * This is a helper function for getting values from parameter/options
   * objects.
   *
   * @param args The object we are extracting values from
   * @param name The name of the property we are getting.
   * @param defaultValue An optional value to return if the property is missing
   * from the object. If this is not specified and the property is missing, an
   * error will be thrown.
   */
  function getArg(aArgs, aName, aDefaultValue) {
    if (aName in aArgs) {
      return aArgs[aName];
    } else if (arguments.length === 3) {
      return aDefaultValue;
    } else {
      throw new Error('"' + aName + '" is a required argument.');
    }
  }
  exports.getArg = getArg;

  var urlRegexp = /([\w+\-.]+):\/\/((\w+:\w+)@)?([\w.]+)?(:(\d+))?(\S+)?/;
  var dataUrlRegexp = /^data:.+\,.+/;

  function urlParse(aUrl) {
    var match = aUrl.match(urlRegexp);
    if (!match) {
      return null;
    }
    return {
      scheme: match[1],
      auth: match[3],
      host: match[4],
      port: match[6],
      path: match[7]
    };
  }
  exports.urlParse = urlParse;

  function urlGenerate(aParsedUrl) {
    var url = aParsedUrl.scheme + "://";
    if (aParsedUrl.auth) {
      url += aParsedUrl.auth + "@"
    }
    if (aParsedUrl.host) {
      url += aParsedUrl.host;
    }
    if (aParsedUrl.port) {
      url += ":" + aParsedUrl.port
    }
    if (aParsedUrl.path) {
      url += aParsedUrl.path;
    }
    return url;
  }
  exports.urlGenerate = urlGenerate;

  function join(aRoot, aPath) {
    var url;

    if (aPath.match(urlRegexp) || aPath.match(dataUrlRegexp)) {
      return aPath;
    }

    if (aPath.charAt(0) === '/' && (url = urlParse(aRoot))) {
      url.path = aPath;
      return urlGenerate(url);
    }

    return aRoot.replace(/\/$/, '') + '/' + aPath;
  }
  exports.join = join;

  /**
   * Because behavior goes wacky when you set `__proto__` on objects, we
   * have to prefix all the strings in our set with an arbitrary character.
   *
   * See https://github.com/mozilla/source-map/pull/31 and
   * https://github.com/mozilla/source-map/issues/30
   *
   * @param String aStr
   */
  function toSetString(aStr) {
    return '$' + aStr;
  }
  exports.toSetString = toSetString;

  function fromSetString(aStr) {
    return aStr.substr(1);
  }
  exports.fromSetString = fromSetString;

  function relative(aRoot, aPath) {
    aRoot = aRoot.replace(/\/$/, '');

    var url = urlParse(aRoot);
    if (aPath.charAt(0) == "/" && url && url.path == "/") {
      return aPath.slice(1);
    }

    return aPath.indexOf(aRoot + '/') === 0
      ? aPath.substr(aRoot.length + 1)
      : aPath;
  }
  exports.relative = relative;

  function strcmp(aStr1, aStr2) {
    var s1 = aStr1 || "";
    var s2 = aStr2 || "";
    return (s1 > s2) - (s1 < s2);
  }

  /**
   * Comparator between two mappings where the original positions are compared.
   *
   * Optionally pass in `true` as `onlyCompareGenerated` to consider two
   * mappings with the same original source/line/column, but different generated
   * line and column the same. Useful when searching for a mapping with a
   * stubbed out mapping.
   */
  function compareByOriginalPositions(mappingA, mappingB, onlyCompareOriginal) {
    var cmp;

    cmp = strcmp(mappingA.source, mappingB.source);
    if (cmp) {
      return cmp;
    }

    cmp = mappingA.originalLine - mappingB.originalLine;
    if (cmp) {
      return cmp;
    }

    cmp = mappingA.originalColumn - mappingB.originalColumn;
    if (cmp || onlyCompareOriginal) {
      return cmp;
    }

    cmp = strcmp(mappingA.name, mappingB.name);
    if (cmp) {
      return cmp;
    }

    cmp = mappingA.generatedLine - mappingB.generatedLine;
    if (cmp) {
      return cmp;
    }

    return mappingA.generatedColumn - mappingB.generatedColumn;
  };
  exports.compareByOriginalPositions = compareByOriginalPositions;

  /**
   * Comparator between two mappings where the generated positions are
   * compared.
   *
   * Optionally pass in `true` as `onlyCompareGenerated` to consider two
   * mappings with the same generated line and column, but different
   * source/name/original line and column the same. Useful when searching for a
   * mapping with a stubbed out mapping.
   */
  function compareByGeneratedPositions(mappingA, mappingB, onlyCompareGenerated) {
    var cmp;

    cmp = mappingA.generatedLine - mappingB.generatedLine;
    if (cmp) {
      return cmp;
    }

    cmp = mappingA.generatedColumn - mappingB.generatedColumn;
    if (cmp || onlyCompareGenerated) {
      return cmp;
    }

    cmp = strcmp(mappingA.source, mappingB.source);
    if (cmp) {
      return cmp;
    }

    cmp = mappingA.originalLine - mappingB.originalLine;
    if (cmp) {
      return cmp;
    }

    cmp = mappingA.originalColumn - mappingB.originalColumn;
    if (cmp) {
      return cmp;
    }

    return strcmp(mappingA.name, mappingB.name);
  };
  exports.compareByGeneratedPositions = compareByGeneratedPositions;

 });

 },{"amdefine":19}],19:[function(_dereq_,module,exports){
 (function (process,__filename){
 /** vim: et:ts=4:sw=4:sts=4
 * @license amdefine 0.1.0 Copyright (c) 2011, The Dojo Foundation All Rights Reserved.
 * Available via the MIT or new BSD license.
 * see: http://github.com/jrburke/amdefine for details
 */

 /*jslint node: true */
 /*global module, process */
 'use strict';

 /**
 * Creates a define for node.
 * @param {Object} module the "module" object that is defined by Node for the
 * current module.
 * @param {Function} [requireFn]. Node's require function for the current module.
 * It only needs to be passed in Node versions before 0.5, when module.require
 * did not exist.
 * @returns {Function} a define function that is usable for the current node
 * module.
 */
 function amdefine(module, requireFn) {
    'use strict';
    var defineCache = {},
        loaderCache = {},
        alreadyCalled = false,
        path = _dereq_('path'),
        makeRequire, stringRequire;

    /**
     * Trims the . and .. from an array of path segments.
     * It will keep a leading path segment if a .. will become
     * the first path segment, to help with module name lookups,
     * which act like paths, but can be remapped. But the end result,
     * all paths that use this function should look normalized.
     * NOTE: this method MODIFIES the input array.
     * @param {Array} ary the array of path segments.
     */
    function trimDots(ary) {
        var i, part;
        for (i = 0; ary[i]; i+= 1) {
            part = ary[i];
            if (part === '.') {
                ary.splice(i, 1);
                i -= 1;
            } else if (part === '..') {
                if (i === 1 && (ary[2] === '..' || ary[0] === '..')) {
                    //End of the line. Keep at least one non-dot
                    //path segment at the front so it can be mapped
                    //correctly to disk. Otherwise, there is likely
                    //no path mapping for a path starting with '..'.
                    //This can still fail, but catches the most reasonable
                    //uses of ..
                    break;
                } else if (i > 0) {
                    ary.splice(i - 1, 2);
                    i -= 2;
                }
            }
        }
    }

    function normalize(name, baseName) {
        var baseParts;

        //Adjust any relative paths.
        if (name && name.charAt(0) === '.') {
            //If have a base name, try to normalize against it,
            //otherwise, assume it is a top-level require that will
            //be relative to baseUrl in the end.
            if (baseName) {
                baseParts = baseName.split('/');
                baseParts = baseParts.slice(0, baseParts.length - 1);
                baseParts = baseParts.concat(name.split('/'));
                trimDots(baseParts);
                name = baseParts.join('/');
            }
        }

        return name;
    }

    /**
     * Create the normalize() function passed to a loader plugin's
     * normalize method.
     */
    function makeNormalize(relName) {
        return function (name) {
            return normalize(name, relName);
        };
    }

    function makeLoad(id) {
        function load(value) {
            loaderCache[id] = value;
        }

        load.fromText = function (id, text) {
            //This one is difficult because the text can/probably uses
            //define, and any relative paths and requires should be relative
            //to that id was it would be found on disk. But this would require
            //bootstrapping a module/require fairly deeply from node core.
            //Not sure how best to go about that yet.
            throw new Error('amdefine does not implement load.fromText');
        };

        return load;
    }

    makeRequire = function (systemRequire, exports, module, relId) {
        function amdRequire(deps, callback) {
            if (typeof deps === 'string') {
                //Synchronous, single module require('')
                return stringRequire(systemRequire, exports, module, deps, relId);
            } else {
                //Array of dependencies with a callback.

                //Convert the dependencies to modules.
                deps = deps.map(function (depName) {
                    return stringRequire(systemRequire, exports, module, depName, relId);
                });

                //Wait for next tick to call back the require call.
                process.nextTick(function () {
                    callback.apply(null, deps);
                });
            }
        }

        amdRequire.toUrl = function (filePath) {
            if (filePath.indexOf('.') === 0) {
                return normalize(filePath, path.dirname(module.filename));
            } else {
                return filePath;
            }
        };

        return amdRequire;
    };

    //Favor explicit value, passed in if the module wants to support Node 0.4.
    requireFn = requireFn || function req() {
        return module.require.apply(module, arguments);
    };

    function runFactory(id, deps, factory) {
        var r, e, m, result;

        if (id) {
            e = loaderCache[id] = {};
            m = {
                id: id,
                uri: __filename,
                exports: e
            };
            r = makeRequire(requireFn, e, m, id);
        } else {
            //Only support one define call per file
            if (alreadyCalled) {
                throw new Error('amdefine with no module ID cannot be called more than once per file.');
            }
            alreadyCalled = true;

            //Use the real variables from node
            //Use module.exports for exports, since
            //the exports in here is amdefine exports.
            e = module.exports;
            m = module;
            r = makeRequire(requireFn, e, m, module.id);
        }

        //If there are dependencies, they are strings, so need
        //to convert them to dependency values.
        if (deps) {
            deps = deps.map(function (depName) {
                return r(depName);
            });
        }

        //Call the factory with the right dependencies.
        if (typeof factory === 'function') {
            result = factory.apply(m.exports, deps);
        } else {
            result = factory;
        }

        if (result !== undefined) {
            m.exports = result;
            if (id) {
                loaderCache[id] = m.exports;
            }
        }
    }

    stringRequire = function (systemRequire, exports, module, id, relId) {
        //Split the ID by a ! so that
        var index = id.indexOf('!'),
            originalId = id,
            prefix, plugin;

        if (index === -1) {
            id = normalize(id, relId);

            //Straight module lookup. If it is one of the special dependencies,
            //deal with it, otherwise, delegate to node.
            if (id === 'require') {
                return makeRequire(systemRequire, exports, module, relId);
            } else if (id === 'exports') {
                return exports;
            } else if (id === 'module') {
                return module;
            } else if (loaderCache.hasOwnProperty(id)) {
                return loaderCache[id];
            } else if (defineCache[id]) {
                runFactory.apply(null, defineCache[id]);
                return loaderCache[id];
            } else {
                if(systemRequire) {
                    return systemRequire(originalId);
                } else {
                    throw new Error('No module with ID: ' + id);
                }
            }
        } else {
            //There is a plugin in play.
            prefix = id.substring(0, index);
            id = id.substring(index + 1, id.length);

            plugin = stringRequire(systemRequire, exports, module, prefix, relId);

            if (plugin.normalize) {
                id = plugin.normalize(id, makeNormalize(relId));
            } else {
                //Normalize the ID normally.
                id = normalize(id, relId);
            }

            if (loaderCache[id]) {
                return loaderCache[id];
            } else {
                plugin.load(id, makeRequire(systemRequire, exports, module, relId), makeLoad(id), {});

                return loaderCache[id];
            }
        }
    };

    //Create a define function specific to the module asking for amdefine.
    function define(id, deps, factory) {
        if (Array.isArray(id)) {
            factory = deps;
            deps = id;
            id = undefined;
        } else if (typeof id !== 'string') {
            factory = id;
            id = deps = undefined;
        }

        if (deps && !Array.isArray(deps)) {
            factory = deps;
            deps = undefined;
        }

        if (!deps) {
            deps = ['require', 'exports', 'module'];
        }

        //Set up properties for this module. If an ID, then use
        //internal cache. If no ID, then use the external variables
        //for this node module.
        if (id) {
            //Put the module in deep freeze until there is a
            //require call for it.
            defineCache[id] = [id, deps, factory];
        } else {
            runFactory(id, deps, factory);
        }
    }

    //define.require, which has access to all the values in the
    //cache. Useful for AMD modules that all have IDs in the file,
    //but need to finally export a value to node based on one of those
    //IDs.
    define.require = function (id) {
        if (loaderCache[id]) {
            return loaderCache[id];
        }

        if (defineCache[id]) {
            runFactory.apply(null, defineCache[id]);
            return loaderCache[id];
        }
    };

    define.amd = {};

    return define;
 }

 module.exports = amdefine;

 }).call(this,_dereq_('_process'),"/node_modules/jstransform/node_modules/source-map/node_modules/amdefine/amdefine.js")
 },{"_process":7,"path":6}],20:[function(_dereq_,module,exports){
 /**
 * Copyright 2013 Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

 var docblockRe = /^\s*(\/\*\*(.|\r?\n)*?\*\/)/;
 var ltrimRe = /^\s*/;
 /**
 * @param {String} contents
 * @return {String}
 */
 function extract(contents) {
  var match = contents.match(docblockRe);
  if (match) {
    return match[0].replace(ltrimRe, '') || '';
  }
  return '';
 }


 var commentStartRe = /^\/\*\*?/;
 var commentEndRe = /\*+\/$/;
 var wsRe = /[\t ]+/g;
 var stringStartRe = /(\r?\n|^) *\*/g;
 var multilineRe = /(?:^|\r?\n) *(@[^\r\n]*?) *\r?\n *([^@\r\n\s][^@\r\n]+?) *\r?\n/g;
 var propertyRe = /(?:^|\r?\n) *@(\S+) *([^\r\n]*)/g;

 /**
 * @param {String} contents
 * @return {Array}
 */
 function parse(docblock) {
  docblock = docblock
    .replace(commentStartRe, '')
    .replace(commentEndRe, '')
    .replace(wsRe, ' ')
    .replace(stringStartRe, '$1');

  // Normalize multi-line directives
  var prev = '';
  while (prev != docblock) {
    prev = docblock;
    docblock = docblock.replace(multilineRe, "\n$1 $2\n");
  }
  docblock = docblock.trim();

  var result = [];
  var match;
  while (match = propertyRe.exec(docblock)) {
    result.push([match[1], match[2]]);
  }

  return result;
 }

 /**
 * Same as parse but returns an object of prop: value instead of array of paris
 * If a property appers more than once the last one will be returned
 *
 * @param {String} contents
 * @return {Object}
 */
 function parseAsObject(docblock) {
  var pairs = parse(docblock);
  var result = {};
  for (var i = 0; i < pairs.length; i++) {
    result[pairs[i][0]] = pairs[i][1];
  }
  return result;
 }


 exports.extract = extract;
 exports.parse = parse;
 exports.parseAsObject = parseAsObject;

 },{}],21:[function(_dereq_,module,exports){
 /**
 * Copyright 2013 Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


 /*jslint node: true*/
 "use strict";

 var esprima = _dereq_('esprima-fb');
 var utils = _dereq_('./utils');

 var getBoundaryNode = utils.getBoundaryNode;
 var declareIdentInScope = utils.declareIdentInLocalScope;
 var initScopeMetadata = utils.initScopeMetadata;
 var Syntax = esprima.Syntax;

 /**
 * @param {object} node
 * @param {object} parentNode
 * @return {boolean}
 */
 function _nodeIsClosureScopeBoundary(node, parentNode) {
  if (node.type === Syntax.Program) {
    return true;
  }

  var parentIsFunction =
    parentNode.type === Syntax.FunctionDeclaration
    || parentNode.type === Syntax.FunctionExpression
    || parentNode.type === Syntax.ArrowFunctionExpression;

  return node.type === Syntax.BlockStatement && parentIsFunction;
 }

 function _nodeIsBlockScopeBoundary(node, parentNode) {
  if (node.type === Syntax.Program) {
    return false;
  }

  return node.type === Syntax.BlockStatement
         && parentNode.type === Syntax.CatchClause;
 }

 /**
 * @param {object} node
 * @param {array} path
 * @param {object} state
 */
 function traverse(node, path, state) {
  // Create a scope stack entry if this is the first node we've encountered in
  // its local scope
  var parentNode = path[0];
  if (!Array.isArray(node) && state.localScope.parentNode !== parentNode) {
    if (_nodeIsClosureScopeBoundary(node, parentNode)) {
      var scopeIsStrict =
        state.scopeIsStrict
        || node.body.length > 0
           && node.body[0].type === Syntax.ExpressionStatement
           && node.body[0].expression.type === Syntax.Literal
           && node.body[0].expression.value === 'use strict';

      if (node.type === Syntax.Program) {
        state = utils.updateState(state, {
          scopeIsStrict: scopeIsStrict
        });
      } else {
        state = utils.updateState(state, {
          localScope: {
            parentNode: parentNode,
            parentScope: state.localScope,
            identifiers: {},
            tempVarIndex: 0
          },
          scopeIsStrict: scopeIsStrict
        });

        // All functions have an implicit 'arguments' object in scope
        declareIdentInScope('arguments', initScopeMetadata(node), state);

        // Include function arg identifiers in the scope boundaries of the
        // function
        if (parentNode.params.length > 0) {
          var param;
          for (var i = 0; i < parentNode.params.length; i++) {
            param = parentNode.params[i];
            if (param.type === Syntax.Identifier) {
              declareIdentInScope(
                param.name, initScopeMetadata(parentNode), state
              );
            }
          }
        }

        // Named FunctionExpressions scope their name within the body block of
        // themselves only
        if (parentNode.type === Syntax.FunctionExpression && parentNode.id) {
          var metaData =
            initScopeMetadata(parentNode, path.parentNodeslice, parentNode);
          declareIdentInScope(parentNode.id.name, metaData, state);
        }
      }

      // Traverse and find all local identifiers in this closure first to
      // account for function/variable declaration hoisting
      collectClosureIdentsAndTraverse(node, path, state);
    }

    if (_nodeIsBlockScopeBoundary(node, parentNode)) {
      state = utils.updateState(state, {
        localScope: {
          parentNode: parentNode,
          parentScope: state.localScope,
          identifiers: {}
        }
      });

      if (parentNode.type === Syntax.CatchClause) {
        declareIdentInScope(
          parentNode.param.name, initScopeMetadata(parentNode), state
        );
      }
      collectBlockIdentsAndTraverse(node, path, state);
    }
  }

  // Only catchup() before and after traversing a child node
  function traverser(node, path, state) {
    node.range && utils.catchup(node.range[0], state);
    traverse(node, path, state);
    node.range && utils.catchup(node.range[1], state);
  }

  utils.analyzeAndTraverse(walker, traverser, node, path, state);
 }

 function collectClosureIdentsAndTraverse(node, path, state) {
  utils.analyzeAndTraverse(
    visitLocalClosureIdentifiers,
    collectClosureIdentsAndTraverse,
    node,
    path,
    state
  );
 }

 function collectBlockIdentsAndTraverse(node, path, state) {
  utils.analyzeAndTraverse(
    visitLocalBlockIdentifiers,
    collectBlockIdentsAndTraverse,
    node,
    path,
    state
  );
 }

 function visitLocalClosureIdentifiers(node, path, state) {
  var metaData;
  switch (node.type) {
    case Syntax.FunctionExpression:
      // Function expressions don't get their names (if there is one) added to
      // the closure scope they're defined in
      return false;
    case Syntax.ClassDeclaration:
    case Syntax.ClassExpression:
    case Syntax.FunctionDeclaration:
      if (node.id) {
        metaData = initScopeMetadata(getBoundaryNode(path), path.slice(), node);
        declareIdentInScope(node.id.name, metaData, state);
      }
      return false;
    case Syntax.VariableDeclarator:
      // Variables have function-local scope
      if (path[0].kind === 'var') {
        metaData = initScopeMetadata(getBoundaryNode(path), path.slice(), node);
        declareIdentInScope(node.id.name, metaData, state);
      }
      break;
  }
 }

 function visitLocalBlockIdentifiers(node, path, state) {
  // TODO: Support 'let' here...maybe...one day...or something...
  if (node.type === Syntax.CatchClause) {
    return false;
  }
 }

 function walker(node, path, state) {
  var visitors = state.g.visitors;
  for (var i = 0; i < visitors.length; i++) {
    if (visitors[i].test(node, path, state)) {
      return visitors[i](traverse, node, path, state);
    }
  }
 }

 var _astCache = {};

 /**
 * Applies all available transformations to the source
 * @param {array} visitors
 * @param {string} source
 * @param {?object} options
 * @return {object}
 */
 function transform(visitors, source, options) {
  options = options || {};
  var ast;
  try {
    var cachedAst = _astCache[source];
    ast = cachedAst ||
      (_astCache[source] = esprima.parse(source, {
        comment: true,
        loc: true,
        range: true
      }));
    } catch (e) {
    e.message = 'Parse Error: ' + e.message;
    throw e;
  }
  var state = utils.createState(source, ast, options);
  state.g.visitors = visitors;

  if (options.sourceMap) {
    var SourceMapGenerator = _dereq_('source-map').SourceMapGenerator;
    state.g.sourceMap = new SourceMapGenerator({file: options.filename || 'transformed.js'});
  }

  traverse(ast, [], state);
  utils.catchup(source.length, state);

  var ret = {code: state.g.buffer, extra: state.g.extra};
  if (options.sourceMap) {
    ret.sourceMap = state.g.sourceMap;
    ret.sourceMapFilename =  options.filename || 'source.js';
  }
  return ret;
 }

 exports.transform = transform;
 exports.Syntax = Syntax;

 },{"./utils":22,"esprima-fb":9,"source-map":10}],22:[function(_dereq_,module,exports){
 /**
 * Copyright 2013 Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


 /*jslint node: true*/
 var Syntax = _dereq_('esprima-fb').Syntax;
 var leadingIndentRegexp = /(^|\n)( {2}|\t)/g;
 var nonWhiteRegexp = /(\S)/g;

 /**
 * A `state` object represents the state of the parser. It has "local" and
 * "global" parts. Global contains parser position, source, etc. Local contains
 * scope based properties like current class name. State should contain all the
 * info required for transformation. It's the only mandatory object that is
 * being passed to every function in transform chain.
 *
 * @param  {string} source
 * @param  {object} transformOptions
 * @return {object}
 */
 function createState(source, rootNode, transformOptions) {
  return {
    /**
     * A tree representing the current local scope (and its lexical scope chain)
     * Useful for tracking identifiers from parent scopes, etc.
     * @type {Object}
     */
    localScope: {
      parentNode: rootNode,
      parentScope: null,
      identifiers: {},
      tempVarIndex: 0
    },
    /**
     * The name (and, if applicable, expression) of the super class
     * @type {Object}
     */
    superClass: null,
    /**
     * The namespace to use when munging identifiers
     * @type {String}
     */
    mungeNamespace: '',
    /**
     * Ref to the node for the current MethodDefinition
     * @type {Object}
     */
    methodNode: null,
    /**
     * Ref to the node for the FunctionExpression of the enclosing
     * MethodDefinition
     * @type {Object}
     */
    methodFuncNode: null,
    /**
     * Name of the enclosing class
     * @type {String}
     */
    className: null,
    /**
     * Whether we're currently within a `strict` scope
     * @type {Bool}
     */
    scopeIsStrict: null,
    /**
     * Indentation offset
     * @type {Number}
     */
    indentBy: 0,
    /**
     * Global state (not affected by updateState)
     * @type {Object}
     */
    g: {
      /**
       * A set of general options that transformations can consider while doing
       * a transformation:
       *
       * - minify
       *   Specifies that transformation steps should do their best to minify
       *   the output source when possible. This is useful for places where
       *   minification optimizations are possible with higher-level context
       *   info than what jsxmin can provide.
       *
       *   For example, the ES6 class transform will minify munged private
       *   variables if this flag is set.
       */
      opts: transformOptions,
      /**
       * Current position in the source code
       * @type {Number}
       */
      position: 0,
      /**
       * Auxiliary data to be returned by transforms
       * @type {Object}
       */
      extra: {},
      /**
       * Buffer containing the result
       * @type {String}
       */
      buffer: '',
      /**
       * Source that is being transformed
       * @type {String}
       */
      source: source,

      /**
       * Cached parsed docblock (see getDocblock)
       * @type {object}
       */
      docblock: null,

      /**
       * Whether the thing was used
       * @type {Boolean}
       */
      tagNamespaceUsed: false,

      /**
       * If using bolt xjs transformation
       * @type {Boolean}
       */
      isBolt: undefined,

      /**
       * Whether to record source map (expensive) or not
       * @type {SourceMapGenerator|null}
       */
      sourceMap: null,

      /**
       * Filename of the file being processed. Will be returned as a source
       * attribute in the source map
       */
      sourceMapFilename: 'source.js',

      /**
       * Only when source map is used: last line in the source for which
       * source map was generated
       * @type {Number}
       */
      sourceLine: 1,

      /**
       * Only when source map is used: last line in the buffer for which
       * source map was generated
       * @type {Number}
       */
      bufferLine: 1,

      /**
       * The top-level Program AST for the original file.
       */
      originalProgramAST: null,

      sourceColumn: 0,
      bufferColumn: 0
    }
  };
 }

 /**
 * Updates a copy of a given state with "update" and returns an updated state.
 *
 * @param  {object} state
 * @param  {object} update
 * @return {object}
 */
 function updateState(state, update) {
  var ret = Object.create(state);
  Object.keys(update).forEach(function(updatedKey) {
    ret[updatedKey] = update[updatedKey];
  });
  return ret;
 }

 /**
 * Given a state fill the resulting buffer from the original source up to
 * the end
 *
 * @param {number} end
 * @param {object} state
 * @param {?function} contentTransformer Optional callback to transform newly
 *                                       added content.
 */
 function catchup(end, state, contentTransformer) {
  if (end < state.g.position) {
    // cannot move backwards
    return;
  }
  var source = state.g.source.substring(state.g.position, end);
  var transformed = updateIndent(source, state);
  if (state.g.sourceMap && transformed) {
    // record where we are
    state.g.sourceMap.addMapping({
      generated: { line: state.g.bufferLine, column: state.g.bufferColumn },
      original: { line: state.g.sourceLine, column: state.g.sourceColumn },
      source: state.g.sourceMapFilename
    });

    // record line breaks in transformed source
    var sourceLines = source.split('\n');
    var transformedLines = transformed.split('\n');
    // Add line break mappings between last known mapping and the end of the
    // added piece. So for the code piece
    //  (foo, bar);
    // > var x = 2;
    // > var b = 3;
    //   var c =
    // only add lines marked with ">": 2, 3.
    for (var i = 1; i < sourceLines.length - 1; i++) {
      state.g.sourceMap.addMapping({
        generated: { line: state.g.bufferLine, column: 0 },
        original: { line: state.g.sourceLine, column: 0 },
        source: state.g.sourceMapFilename
      });
      state.g.sourceLine++;
      state.g.bufferLine++;
    }
    // offset for the last piece
    if (sourceLines.length > 1) {
      state.g.sourceLine++;
      state.g.bufferLine++;
      state.g.sourceColumn = 0;
      state.g.bufferColumn = 0;
    }
    state.g.sourceColumn += sourceLines[sourceLines.length - 1].length;
    state.g.bufferColumn +=
      transformedLines[transformedLines.length - 1].length;
  }
  state.g.buffer +=
    contentTransformer ? contentTransformer(transformed) : transformed;
  state.g.position = end;
 }

 /**
 * Returns original source for an AST node.
 * @param {object} node
 * @param {object} state
 * @return {string}
 */
 function getNodeSourceText(node, state) {
  return state.g.source.substring(node.range[0], node.range[1]);
 }

 function replaceNonWhite(value) {
  return value.replace(nonWhiteRegexp, ' ');
 }

 /**
 * Removes all non-whitespace characters
 */
 function stripNonWhite(value) {
  return value.replace(nonWhiteRegexp, '');
 }

 /**
 * Catches up as `catchup` but replaces non-whitespace chars with spaces.
 */
 function catchupWhiteOut(end, state) {
  catchup(end, state, replaceNonWhite);
 }

 /**
 * Catches up as `catchup` but removes all non-whitespace characters.
 */
 function catchupWhiteSpace(end, state) {
  catchup(end, state, stripNonWhite);
 }

 /**
 * Removes all non-newline characters
 */
 var reNonNewline = /[^\n]/g;
 function stripNonNewline(value) {
  return value.replace(reNonNewline, function() {
    return '';
  });
 }

 /**
 * Catches up as `catchup` but removes all non-newline characters.
 *
 * Equivalent to appending as many newlines as there are in the original source
 * between the current position and `end`.
 */
 function catchupNewlines(end, state) {
  catchup(end, state, stripNonNewline);
 }


 /**
 * Same as catchup but does not touch the buffer
 *
 * @param  {number} end
 * @param  {object} state
 */
 function move(end, state) {
  // move the internal cursors
  if (state.g.sourceMap) {
    if (end < state.g.position) {
      state.g.position = 0;
      state.g.sourceLine = 1;
      state.g.sourceColumn = 0;
    }

    var source = state.g.source.substring(state.g.position, end);
    var sourceLines = source.split('\n');
    if (sourceLines.length > 1) {
      state.g.sourceLine += sourceLines.length - 1;
      state.g.sourceColumn = 0;
    }
    state.g.sourceColumn += sourceLines[sourceLines.length - 1].length;
  }
  state.g.position = end;
 }

 /**
 * Appends a string of text to the buffer
 *
 * @param {string} str
 * @param {object} state
 */
 function append(str, state) {
  if (state.g.sourceMap && str) {
    state.g.sourceMap.addMapping({
      generated: { line: state.g.bufferLine, column: state.g.bufferColumn },
      original: { line: state.g.sourceLine, column: state.g.sourceColumn },
      source: state.g.sourceMapFilename
    });
    var transformedLines = str.split('\n');
    if (transformedLines.length > 1) {
      state.g.bufferLine += transformedLines.length - 1;
      state.g.bufferColumn = 0;
    }
    state.g.bufferColumn +=
      transformedLines[transformedLines.length - 1].length;
  }
  state.g.buffer += str;
 }

 /**
 * Update indent using state.indentBy property. Indent is measured in
 * double spaces. Updates a single line only.
 *
 * @param {string} str
 * @param {object} state
 * @return {string}
 */
 function updateIndent(str, state) {
  var indentBy = state.indentBy;
  if (indentBy < 0) {
    for (var i = 0; i < -indentBy; i++) {
      str = str.replace(leadingIndentRegexp, '$1');
    }
  } else {
    for (var i = 0; i < indentBy; i++) {
      str = str.replace(leadingIndentRegexp, '$1$2$2');
    }
  }
  return str;
 }

 /**
 * Calculates indent from the beginning of the line until "start" or the first
 * character before start.
 * @example
 *   "  foo.bar()"
 *         ^
 *       start
 *   indent will be "  "
 *
 * @param  {number} start
 * @param  {object} state
 * @return {string}
 */
 function indentBefore(start, state) {
  var end = start;
  start = start - 1;

  while (start > 0 && state.g.source[start] != '\n') {
    if (!state.g.source[start].match(/[ \t]/)) {
      end = start;
    }
    start--;
  }
  return state.g.source.substring(start + 1, end);
 }

 function getDocblock(state) {
  if (!state.g.docblock) {
    var docblock = _dereq_('./docblock');
    state.g.docblock =
      docblock.parseAsObject(docblock.extract(state.g.source));
  }
  return state.g.docblock;
 }

 function identWithinLexicalScope(identName, state, stopBeforeNode) {
  var currScope = state.localScope;
  while (currScope) {
    if (currScope.identifiers[identName] !== undefined) {
      return true;
    }

    if (stopBeforeNode && currScope.parentNode === stopBeforeNode) {
      break;
    }

    currScope = currScope.parentScope;
  }
  return false;
 }

 function identInLocalScope(identName, state) {
  return state.localScope.identifiers[identName] !== undefined;
 }

 /**
 * @param {object} boundaryNode
 * @param {?array} path
 * @return {?object} node
 */
 function initScopeMetadata(boundaryNode, path, node) {
  return {
    boundaryNode: boundaryNode,
    bindingPath: path,
    bindingNode: node
  };
 }

 function declareIdentInLocalScope(identName, metaData, state) {
  state.localScope.identifiers[identName] = {
    boundaryNode: metaData.boundaryNode,
    path: metaData.bindingPath,
    node: metaData.bindingNode,
    state: Object.create(state)
  };
 }

 function getLexicalBindingMetadata(identName, state) {
  return state.localScope.identifiers[identName];
 }

 /**
 * Apply the given analyzer function to the current node. If the analyzer
 * doesn't return false, traverse each child of the current node using the given
 * traverser function.
 *
 * @param {function} analyzer
 * @param {function} traverser
 * @param {object} node
 * @param {array} path
 * @param {object} state
 */
 function analyzeAndTraverse(analyzer, traverser, node, path, state) {
  if (node.type) {
    if (analyzer(node, path, state) === false) {
      return;
    }
    path.unshift(node);
  }

  getOrderedChildren(node).forEach(function(child) {
    traverser(child, path, state);
  });

  node.type && path.shift();
 }

 /**
 * It is crucial that we traverse in order, or else catchup() on a later
 * node that is processed out of order can move the buffer past a node
 * that we haven't handled yet, preventing us from modifying that node.
 *
 * This can happen when a node has multiple properties containing children.
 * For example, XJSElement nodes have `openingElement`, `closingElement` and
 * `children`. If we traverse `openingElement`, then `closingElement`, then
 * when we get to `children`, the buffer has already caught up to the end of
 * the closing element, after the children.
 *
 * This is basically a Schwartzian transform. Collects an array of children,
 * each one represented as [child, startIndex]; sorts the array by start
 * index; then traverses the children in that order.
 */
 function getOrderedChildren(node) {
  var queue = [];
  for (var key in node) {
    if (node.hasOwnProperty(key)) {
      enqueueNodeWithStartIndex(queue, node[key]);
    }
  }
  queue.sort(function(a, b) { return a[1] - b[1]; });
  return queue.map(function(pair) { return pair[0]; });
 }

 /**
 * Helper function for analyzeAndTraverse which queues up all of the children
 * of the given node.
 *
 * Children can also be found in arrays, so we basically want to merge all of
 * those arrays together so we can sort them and then traverse the children
 * in order.
 *
 * One example is the Program node. It contains `body` and `comments`, both
 * arrays. Lexographically, comments are interspersed throughout the body
 * nodes, but esprima's AST groups them together.
 */
 function enqueueNodeWithStartIndex(queue, node) {
  if (typeof node !== 'object' || node === null) {
    return;
  }
  if (node.range) {
    queue.push([node, node.range[0]]);
  } else if (Array.isArray(node)) {
    for (var ii = 0; ii < node.length; ii++) {
      enqueueNodeWithStartIndex(queue, node[ii]);
    }
  }
 }

 /**
 * Checks whether a node or any of its sub-nodes contains
 * a syntactic construct of the passed type.
 * @param {object} node - AST node to test.
 * @param {string} type - node type to lookup.
 */
 function containsChildOfType(node, type) {
  return containsChildMatching(node, function(node) {
    return node.type === type;
  });
 }

 function containsChildMatching(node, matcher) {
  var foundMatchingChild = false;
  function nodeTypeAnalyzer(node) {
    if (matcher(node) === true) {
      foundMatchingChild = true;
      return false;
    }
  }
  function nodeTypeTraverser(child, path, state) {
    if (!foundMatchingChild) {
      foundMatchingChild = containsChildMatching(child, matcher);
    }
  }
  analyzeAndTraverse(
    nodeTypeAnalyzer,
    nodeTypeTraverser,
    node,
    []
  );
  return foundMatchingChild;
 }

 var scopeTypes = {};
 scopeTypes[Syntax.FunctionExpression] = true;
 scopeTypes[Syntax.FunctionDeclaration] = true;
 scopeTypes[Syntax.Program] = true;

 function getBoundaryNode(path) {
  for (var ii = 0; ii < path.length; ++ii) {
    if (scopeTypes[path[ii].type]) {
      return path[ii];
    }
  }
  throw new Error(
    'Expected to find a node with one of the following types in path:\n' +
    JSON.stringify(Object.keys(scopeTypes))
  );
 }

 function getTempVar(tempVarIndex) {
  return '$__' + tempVarIndex;
 }

 function getTempVarWithValue(tempVarIndex, tempVarValue) {
  return getTempVar(tempVarIndex) + '=' + tempVarValue;
 }

 exports.append = append;
 exports.catchup = catchup;
 exports.catchupWhiteOut = catchupWhiteOut;
 exports.catchupWhiteSpace = catchupWhiteSpace;
 exports.catchupNewlines = catchupNewlines;
 exports.containsChildMatching = containsChildMatching;
 exports.containsChildOfType = containsChildOfType;
 exports.createState = createState;
 exports.declareIdentInLocalScope = declareIdentInLocalScope;
 exports.getBoundaryNode = getBoundaryNode;
 exports.getDocblock = getDocblock;
 exports.getLexicalBindingMetadata = getLexicalBindingMetadata;
 exports.initScopeMetadata = initScopeMetadata;
 exports.identWithinLexicalScope = identWithinLexicalScope;
 exports.identInLocalScope = identInLocalScope;
 exports.indentBefore = indentBefore;
 exports.move = move;
 exports.scopeTypes = scopeTypes;
 exports.updateIndent = updateIndent;
 exports.updateState = updateState;
 exports.analyzeAndTraverse = analyzeAndTraverse;
 exports.getOrderedChildren = getOrderedChildren;
 exports.getNodeSourceText = getNodeSourceText;
 exports.getTempVar = getTempVar;
 exports.getTempVarWithValue = getTempVarWithValue;

 },{"./docblock":20,"esprima-fb":9}],23:[function(_dereq_,module,exports){
 /**
 * Copyright 2013 Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

 /*global exports:true*/

 /**
 * Desugars ES6 Arrow functions to ES3 function expressions.
 * If the function contains `this` expression -- automatically
 * binds the function to current value of `this`.
 *
 * Single parameter, simple expression:
 *
 * [1, 2, 3].map(x => x * x);
 *
 * [1, 2, 3].map(function(x) { return x * x; });
 *
 * Several parameters, complex block:
 *
 * this.users.forEach((user, idx) => {
 *   return this.isActive(idx) && this.send(user);
 * });
 *
 * this.users.forEach(function(user, idx) {
 *   return this.isActive(idx) && this.send(user);
 * }.bind(this));
 *
 */
 var restParamVisitors = _dereq_('./es6-rest-param-visitors');
 var destructuringVisitors = _dereq_('./es6-destructuring-visitors');

 var Syntax = _dereq_('esprima-fb').Syntax;
 var utils = _dereq_('../src/utils');

 /**
 * @public
 */
 function visitArrowFunction(traverse, node, path, state) {
  var notInExpression = (path[0].type === Syntax.ExpressionStatement);

  // Wrap a function into a grouping operator, if it's not
  // in the expression position.
  if (notInExpression) {
    utils.append('(', state);
  }

  utils.append('function', state);
  renderParams(traverse, node, path, state);

  // Skip arrow.
  utils.catchupWhiteSpace(node.body.range[0], state);

  var renderBody = node.body.type == Syntax.BlockStatement
    ? renderStatementBody
    : renderExpressionBody;

  path.unshift(node);
  renderBody(traverse, node, path, state);
  path.shift();

  // Bind the function only if `this` value is used
  // inside it or inside any sub-expression.
  var containsBindingSyntax =
    utils.containsChildMatching(node.body, function(node) {
      return node.type === Syntax.ThisExpression
             || (node.type === Syntax.Identifier
                 && node.name === "super");
    });

  if (containsBindingSyntax) {
    utils.append('.bind(this)', state);
  }

  utils.catchupWhiteSpace(node.range[1], state);

  // Close wrapper if not in the expression.
  if (notInExpression) {
    utils.append(')', state);
  }

  return false;
 }

 function renderParams(traverse, node, path, state) {
  // To preserve inline typechecking directives, we
  // distinguish between parens-free and paranthesized single param.
  if (isParensFreeSingleParam(node, state) || !node.params.length) {
    utils.append('(', state);
  }
  if (node.params.length !== 0) {
    path.unshift(node);
    traverse(node.params, path, state);
    path.unshift();
  }
  utils.append(')', state);
 }

 function isParensFreeSingleParam(node, state) {
  return node.params.length === 1 &&
    state.g.source[state.g.position] !== '(';
 }

 function renderExpressionBody(traverse, node, path, state) {
  // Wrap simple expression bodies into a block
  // with explicit return statement.
  utils.append('{', state);

  // Special handling of rest param.
  if (node.rest) {
    utils.append(
      restParamVisitors.renderRestParamSetup(node, state),
      state
    );
  }

  // Special handling of destructured params.
  destructuringVisitors.renderDestructuredComponents(
    node,
    utils.updateState(state, {
      localScope: {
        parentNode: state.parentNode,
        parentScope: state.parentScope,
        identifiers: state.identifiers,
        tempVarIndex: 0
      }
    })
  );

  utils.append('return ', state);
  renderStatementBody(traverse, node, path, state);
  utils.append(';}', state);
 }

 function renderStatementBody(traverse, node, path, state) {
  traverse(node.body, path, state);
  utils.catchup(node.body.range[1], state);
 }

 visitArrowFunction.test = function(node, path, state) {
  return node.type === Syntax.ArrowFunctionExpression;
 };

 exports.visitorList = [
  visitArrowFunction
 ];


 },{"../src/utils":22,"./es6-destructuring-visitors":25,"./es6-rest-param-visitors":28,"esprima-fb":9}],24:[function(_dereq_,module,exports){
 /**
 * Copyright 2013 Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

 /*jslint node:true*/

 /**
 * @typechecks
 */
 'use strict';

 var base62 = _dereq_('base62');
 var Syntax = _dereq_('esprima-fb').Syntax;
 var utils = _dereq_('../src/utils');
 var reservedWordsHelper = _dereq_('./reserved-words-helper');

 var declareIdentInLocalScope = utils.declareIdentInLocalScope;
 var initScopeMetadata = utils.initScopeMetadata;

 var SUPER_PROTO_IDENT_PREFIX = '____SuperProtoOf';

 var _anonClassUUIDCounter = 0;
 var _mungedSymbolMaps = {};

 function resetSymbols() {
  _anonClassUUIDCounter = 0;
  _mungedSymbolMaps = {};
 }

 /**
 * Used to generate a unique class for use with code-gens for anonymous class
 * expressions.
 *
 * @param {object} state
 * @return {string}
 */
 function _generateAnonymousClassName(state) {
  var mungeNamespace = state.mungeNamespace || '';
  return '____Class' + mungeNamespace + base62.encode(_anonClassUUIDCounter++);
 }

 /**
 * Given an identifier name, munge it using the current state's mungeNamespace.
 *
 * @param {string} identName
 * @param {object} state
 * @return {string}
 */
 function _getMungedName(identName, state) {
  var mungeNamespace = state.mungeNamespace;
  var shouldMinify = state.g.opts.minify;

  if (shouldMinify) {
    if (!_mungedSymbolMaps[mungeNamespace]) {
      _mungedSymbolMaps[mungeNamespace] = {
        symbolMap: {},
        identUUIDCounter: 0
      };
    }

    var symbolMap = _mungedSymbolMaps[mungeNamespace].symbolMap;
    if (!symbolMap[identName]) {
      symbolMap[identName] =
        base62.encode(_mungedSymbolMaps[mungeNamespace].identUUIDCounter++);
    }
    identName = symbolMap[identName];
  }
  return '$' + mungeNamespace + identName;
 }

 /**
 * Extracts super class information from a class node.
 *
 * Information includes name of the super class and/or the expression string
 * (if extending from an expression)
 *
 * @param {object} node
 * @param {object} state
 * @return {object}
 */
 function _getSuperClassInfo(node, state) {
  var ret = {
    name: null,
    expression: null
  };
  if (node.superClass) {
    if (node.superClass.type === Syntax.Identifier) {
      ret.name = node.superClass.name;
    } else {
      // Extension from an expression
      ret.name = _generateAnonymousClassName(state);
      ret.expression = state.g.source.substring(
        node.superClass.range[0],
        node.superClass.range[1]
      );
    }
  }
  return ret;
 }

 /**
 * Used with .filter() to find the constructor method in a list of
 * MethodDefinition nodes.
 *
 * @param {object} classElement
 * @return {boolean}
 */
 function _isConstructorMethod(classElement) {
  return classElement.type === Syntax.MethodDefinition &&
         classElement.key.type === Syntax.Identifier &&
         classElement.key.name === 'constructor';
 }

 /**
 * @param {object} node
 * @param {object} state
 * @return {boolean}
 */
 function _shouldMungeIdentifier(node, state) {
  return (
    !!state.methodFuncNode &&
    !utils.getDocblock(state).hasOwnProperty('preventMunge') &&
    /^_(?!_)/.test(node.name)
  );
 }

 /**
 * @param {function} traverse
 * @param {object} node
 * @param {array} path
 * @param {object} state
 */
 function visitClassMethod(traverse, node, path, state) {
  if (!state.g.opts.es5 && (node.kind === 'get' || node.kind === 'set')) {
    throw new Error(
      'This transform does not support ' + node.kind + 'ter methods for ES6 ' +
      'classes. (line: ' + node.loc.start.line + ', col: ' +
      node.loc.start.column + ')'
    );
  }
  state = utils.updateState(state, {
    methodNode: node
  });
  utils.catchup(node.range[0], state);
  path.unshift(node);
  traverse(node.value, path, state);
  path.shift();
  return false;
 }
 visitClassMethod.test = function(node, path, state) {
  return node.type === Syntax.MethodDefinition;
 };

 /**
 * @param {function} traverse
 * @param {object} node
 * @param {array} path
 * @param {object} state
 */
 function visitClassFunctionExpression(traverse, node, path, state) {
  var methodNode = path[0];
  var isGetter = methodNode.kind === 'get';
  var isSetter = methodNode.kind === 'set';

  state = utils.updateState(state, {
    methodFuncNode: node
  });

  if (methodNode.key.name === 'constructor') {
    utils.append('function ' + state.className, state);
  } else {
    var methodAccessor;
    var prototypeOrStatic = methodNode["static"] ? '' : '.prototype';
    var objectAccessor = state.className + prototypeOrStatic;

    if (methodNode.key.type === Syntax.Identifier) {
      // foo() {}
      methodAccessor = methodNode.key.name;
      if (_shouldMungeIdentifier(methodNode.key, state)) {
        methodAccessor = _getMungedName(methodAccessor, state);
      }
      if (isGetter || isSetter) {
        methodAccessor = JSON.stringify(methodAccessor);
      } else if (reservedWordsHelper.isReservedWord(methodAccessor)) {
        methodAccessor = '[' + JSON.stringify(methodAccessor) + ']';
      } else {
        methodAccessor = '.' + methodAccessor;
      }
    } else if (methodNode.key.type === Syntax.Literal) {
      // 'foo bar'() {}  | get 'foo bar'() {} | set 'foo bar'() {}
      methodAccessor = JSON.stringify(methodNode.key.value);
      if (!(isGetter || isSetter)) {
        methodAccessor = '[' + methodAccessor + ']';
      }
    }

    if (isSetter || isGetter) {
      utils.append(
        'Object.defineProperty(' +
          objectAccessor + ',' +
          methodAccessor + ',' +
          '{enumerable:true,configurable:true,' +
          methodNode.kind + ':function',
        state
      );
    } else {
      utils.append(
        objectAccessor +
        methodAccessor + '=function' + (node.generator ? '*' : ''),
        state
      );
    }
  }
  utils.move(methodNode.key.range[1], state);
  utils.append('(', state);

  var params = node.params;
  if (params.length > 0) {
    utils.catchupNewlines(params[0].range[0], state);
    for (var i = 0; i < params.length; i++) {
      utils.catchup(node.params[i].range[0], state);
      path.unshift(node);
      traverse(params[i], path, state);
      path.shift();
    }
  }
  utils.append(')', state);
  utils.catchupWhiteSpace(node.body.range[0], state);
  utils.append('{', state);
  if (!state.scopeIsStrict) {
    utils.append('"use strict";', state);
    state = utils.updateState(state, {
      scopeIsStrict: true
    });
  }
  utils.move(node.body.range[0] + '{'.length, state);

  path.unshift(node);
  traverse(node.body, path, state);
  path.shift();
  utils.catchup(node.body.range[1], state);

  if (methodNode.key.name !== 'constructor') {
    if (isGetter || isSetter) {
      utils.append('})', state);
    }
    utils.append(';', state);
  }
  return false;
 }
 visitClassFunctionExpression.test = function(node, path, state) {
  return node.type === Syntax.FunctionExpression
         && path[0].type === Syntax.MethodDefinition;
 };

 function visitClassMethodParam(traverse, node, path, state) {
  var paramName = node.name;
  if (_shouldMungeIdentifier(node, state)) {
    paramName = _getMungedName(node.name, state);
  }
  utils.append(paramName, state);
  utils.move(node.range[1], state);
 }
 visitClassMethodParam.test = function(node, path, state) {
  if (!path[0] || !path[1]) {
    return;
  }

  var parentFuncExpr = path[0];
  var parentClassMethod = path[1];

  return parentFuncExpr.type === Syntax.FunctionExpression
         && parentClassMethod.type === Syntax.MethodDefinition
         && node.type === Syntax.Identifier;
 };

 /**
 * @param {function} traverse
 * @param {object} node
 * @param {array} path
 * @param {object} state
 */
 function _renderClassBody(traverse, node, path, state) {
  var className = state.className;
  var superClass = state.superClass;

  // Set up prototype of constructor on same line as `extends` for line-number
  // preservation. This relies on function-hoisting if a constructor function is
  // defined in the class body.
  if (superClass.name) {
    // If the super class is an expression, we need to memoize the output of the
    // expression into the generated class name variable and use that to refer
    // to the super class going forward. Example:
    //
    //   class Foo extends mixin(Bar, Baz) {}
    //     --transforms to--
    //   function Foo() {} var ____Class0Blah = mixin(Bar, Baz);
    if (superClass.expression !== null) {
      utils.append(
        'var ' + superClass.name + '=' + superClass.expression + ';',
        state
      );
    }

    var keyName = superClass.name + '____Key';
    var keyNameDeclarator = '';
    if (!utils.identWithinLexicalScope(keyName, state)) {
      keyNameDeclarator = 'var ';
      declareIdentInLocalScope(keyName, initScopeMetadata(node), state);
    }
    utils.append(
      'for(' + keyNameDeclarator + keyName + ' in ' + superClass.name + '){' +
        'if(' + superClass.name + '.hasOwnProperty(' + keyName + ')){' +
          className + '[' + keyName + ']=' +
            superClass.name + '[' + keyName + '];' +
        '}' +
      '}',
      state
    );

    var superProtoIdentStr = SUPER_PROTO_IDENT_PREFIX + superClass.name;
    if (!utils.identWithinLexicalScope(superProtoIdentStr, state)) {
      utils.append(
        'var ' + superProtoIdentStr + '=' + superClass.name + '===null?' +
        'null:' + superClass.name + '.prototype;',
        state
      );
      declareIdentInLocalScope(superProtoIdentStr, initScopeMetadata(node), state);
    }

    utils.append(
      className + '.prototype=Object.create(' + superProtoIdentStr + ');',
      state
    );
    utils.append(
      className + '.prototype.constructor=' + className + ';',
      state
    );
    utils.append(
      className + '.__superConstructor__=' + superClass.name + ';',
      state
    );
  }

  // If there's no constructor method specified in the class body, create an
  // empty constructor function at the top (same line as the class keyword)
  if (!node.body.body.filter(_isConstructorMethod).pop()) {
    utils.append('function ' + className + '(){', state);
    if (!state.scopeIsStrict) {
      utils.append('"use strict";', state);
    }
    if (superClass.name) {
      utils.append(
        'if(' + superClass.name + '!==null){' +
        superClass.name + '.apply(this,arguments);}',
        state
      );
    }
    utils.append('}', state);
  }

  utils.move(node.body.range[0] + '{'.length, state);
  traverse(node.body, path, state);
  utils.catchupWhiteSpace(node.range[1], state);
 }

 /**
 * @param {function} traverse
 * @param {object} node
 * @param {array} path
 * @param {object} state
 */
 function visitClassDeclaration(traverse, node, path, state) {
  var className = node.id.name;
  var superClass = _getSuperClassInfo(node, state);

  state = utils.updateState(state, {
    mungeNamespace: className,
    className: className,
    superClass: superClass
  });

  _renderClassBody(traverse, node, path, state);

  return false;
 }
 visitClassDeclaration.test = function(node, path, state) {
  return node.type === Syntax.ClassDeclaration;
 };

 /**
 * @param {function} traverse
 * @param {object} node
 * @param {array} path
 * @param {object} state
 */
 function visitClassExpression(traverse, node, path, state) {
  var className = node.id && node.id.name || _generateAnonymousClassName(state);
  var superClass = _getSuperClassInfo(node, state);

  utils.append('(function(){', state);

  state = utils.updateState(state, {
    mungeNamespace: className,
    className: className,
    superClass: superClass
  });

  _renderClassBody(traverse, node, path, state);

  utils.append('return ' + className + ';})()', state);
  return false;
 }
 visitClassExpression.test = function(node, path, state) {
  return node.type === Syntax.ClassExpression;
 };

 /**
 * @param {function} traverse
 * @param {object} node
 * @param {array} path
 * @param {object} state
 */
 function visitPrivateIdentifier(traverse, node, path, state) {
  utils.append(_getMungedName(node.name, state), state);
  utils.move(node.range[1], state);
 }
 visitPrivateIdentifier.test = function(node, path, state) {
  if (node.type === Syntax.Identifier && _shouldMungeIdentifier(node, state)) {
    // Always munge non-computed properties of MemberExpressions
    // (a la preventing access of properties of unowned objects)
    if (path[0].type === Syntax.MemberExpression && path[0].object !== node
        && path[0].computed === false) {
      return true;
    }

    // Always munge identifiers that were declared within the method function
    // scope
    if (utils.identWithinLexicalScope(node.name, state, state.methodFuncNode)) {
      return true;
    }

    // Always munge private keys on object literals defined within a method's
    // scope.
    if (path[0].type === Syntax.Property
        && path[1].type === Syntax.ObjectExpression) {
      return true;
    }

    // Always munge function parameters
    if (path[0].type === Syntax.FunctionExpression
        || path[0].type === Syntax.FunctionDeclaration
        || path[0].type === Syntax.ArrowFunctionExpression) {
      for (var i = 0; i < path[0].params.length; i++) {
        if (path[0].params[i] === node) {
          return true;
        }
      }
    }
  }
  return false;
 };

 /**
 * @param {function} traverse
 * @param {object} node
 * @param {array} path
 * @param {object} state
 */
 function visitSuperCallExpression(traverse, node, path, state) {
  var superClassName = state.superClass.name;

  if (node.callee.type === Syntax.Identifier) {
    if (_isConstructorMethod(state.methodNode)) {
      utils.append(superClassName + '.call(', state);
    } else {
      var protoProp = SUPER_PROTO_IDENT_PREFIX + superClassName;
      if (state.methodNode.key.type === Syntax.Identifier) {
        protoProp += '.' + state.methodNode.key.name;
      } else if (state.methodNode.key.type === Syntax.Literal) {
        protoProp += '[' + JSON.stringify(state.methodNode.key.value) + ']';
      }
      utils.append(protoProp + ".call(", state);
    }
    utils.move(node.callee.range[1], state);
  } else if (node.callee.type === Syntax.MemberExpression) {
    utils.append(SUPER_PROTO_IDENT_PREFIX + superClassName, state);
    utils.move(node.callee.object.range[1], state);

    if (node.callee.computed) {
      // ["a" + "b"]
      utils.catchup(node.callee.property.range[1] + ']'.length, state);
    } else {
      // .ab
      utils.append('.' + node.callee.property.name, state);
    }

    utils.append('.call(', state);
    utils.move(node.callee.range[1], state);
  }

  utils.append('this', state);
  if (node.arguments.length > 0) {
    utils.append(',', state);
    utils.catchupWhiteSpace(node.arguments[0].range[0], state);
    traverse(node.arguments, path, state);
  }

  utils.catchupWhiteSpace(node.range[1], state);
  utils.append(')', state);
  return false;
 }
 visitSuperCallExpression.test = function(node, path, state) {
  if (state.superClass && node.type === Syntax.CallExpression) {
    var callee = node.callee;
    if (callee.type === Syntax.Identifier && callee.name === 'super'
        || callee.type == Syntax.MemberExpression
           && callee.object.name === 'super') {
      return true;
    }
  }
  return false;
 };

 /**
 * @param {function} traverse
 * @param {object} node
 * @param {array} path
 * @param {object} state
 */
 function visitSuperMemberExpression(traverse, node, path, state) {
  var superClassName = state.superClass.name;

  utils.append(SUPER_PROTO_IDENT_PREFIX + superClassName, state);
  utils.move(node.object.range[1], state);
 }
 visitSuperMemberExpression.test = function(node, path, state) {
  return state.superClass
         && node.type === Syntax.MemberExpression
         && node.object.type === Syntax.Identifier
         && node.object.name === 'super';
 };

 exports.resetSymbols = resetSymbols;

 exports.visitorList = [
  visitClassDeclaration,
  visitClassExpression,
  visitClassFunctionExpression,
  visitClassMethod,
  visitClassMethodParam,
  visitPrivateIdentifier,
  visitSuperCallExpression,
  visitSuperMemberExpression
 ];

 },{"../src/utils":22,"./reserved-words-helper":32,"base62":8,"esprima-fb":9}],25:[function(_dereq_,module,exports){
 /**
 * Copyright 2014 Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 /*global exports:true*/

 /**
 * Implements ES6 destructuring assignment and pattern matchng.
 *
 * function init({port, ip, coords: [x, y]}) {
 *   return (x && y) ? {id, port} : {ip};
 * };
 *
 * function init($__0) {
 *   var
 *    port = $__0.port,
 *    ip = $__0.ip,
 *    $__1 = $__0.coords,
 *    x = $__1[0],
 *    y = $__1[1];
 *   return (x && y) ? {id, port} : {ip};
 * }
 *
 * var x, {ip, port} = init({ip, port});
 *
 * var x, $__0 = init({ip, port}), ip = $__0.ip, port = $__0.port;
 *
 */
 var Syntax = _dereq_('esprima-fb').Syntax;
 var utils = _dereq_('../src/utils');

 var reservedWordsHelper = _dereq_('./reserved-words-helper');
 var restParamVisitors = _dereq_('./es6-rest-param-visitors');
 var restPropertyHelpers = _dereq_('./es7-rest-property-helpers');

 // -------------------------------------------------------
 // 1. Structured variable declarations.
 //
 // var [a, b] = [b, a];
 // var {x, y} = {y, x};
 // -------------------------------------------------------

 function visitStructuredVariable(traverse, node, path, state) {
  // Allocate new temp for the pattern.
  utils.append(utils.getTempVar(state.localScope.tempVarIndex) + '=', state);
  // Skip the pattern and assign the init to the temp.
  utils.catchupWhiteSpace(node.init.range[0], state);
  traverse(node.init, path, state);
  utils.catchup(node.init.range[1], state);
  // Render the destructured data.
  utils.append(',' + getDestructuredComponents(node.id, state), state);
  state.localScope.tempVarIndex++;
  return false;
 }

 visitStructuredVariable.test = function(node, path, state) {
  return node.type === Syntax.VariableDeclarator &&
    isStructuredPattern(node.id);
 };

 function isStructuredPattern(node) {
  return node.type === Syntax.ObjectPattern ||
    node.type === Syntax.ArrayPattern;
 }

 // Main function which does actual recursive destructuring
 // of nested complex structures.
 function getDestructuredComponents(node, state) {
  var tmpIndex = state.localScope.tempVarIndex;
  var components = [];
  var patternItems = getPatternItems(node);

  for (var idx = 0; idx < patternItems.length; idx++) {
    var item = patternItems[idx];
    if (!item) {
      continue;
    }

    if (item.type === Syntax.SpreadElement) {
      // Spread/rest of an array.
      // TODO(dmitrys): support spread in the middle of a pattern
      // and also for function param patterns: [x, ...xs, y]
      components.push(item.argument.name +
        '=Array.prototype.slice.call(' +
        utils.getTempVar(tmpIndex) + ',' + idx + ')'
      );
      continue;
    }

    if (item.type === Syntax.SpreadProperty) {
      var restExpression = restPropertyHelpers.renderRestExpression(
        utils.getTempVar(tmpIndex),
        patternItems
      );
      components.push(item.argument.name + '=' + restExpression);
      continue;
    }

    // Depending on pattern type (Array or Object), we get
    // corresponding pattern item parts.
    var accessor = getPatternItemAccessor(node, item, tmpIndex, idx);
    var value = getPatternItemValue(node, item);

    // TODO(dmitrys): implement default values: {x, y=5}
    if (value.type === Syntax.Identifier) {
      // Simple pattern item.
      components.push(value.name + '=' + accessor);
    } else {
      // Complex sub-structure.
      components.push(
        utils.getTempVarWithValue(++state.localScope.tempVarIndex, accessor) +
        ',' + getDestructuredComponents(value, state)
      );
    }
  }

  return components.join(',');
 }

 function getPatternItems(node) {
  return node.properties || node.elements;
 }

 function getPatternItemAccessor(node, patternItem, tmpIndex, idx) {
  var tmpName = utils.getTempVar(tmpIndex);
  if (node.type === Syntax.ObjectPattern) {
    if (reservedWordsHelper.isReservedWord(patternItem.key.name)) {
      return tmpName + '["' + patternItem.key.name + '"]';
    } else if (patternItem.key.type === Syntax.Literal) {
      return tmpName + '[' + JSON.stringify(patternItem.key.value) + ']';
    } else if (patternItem.key.type === Syntax.Identifier) {
      return tmpName + '.' + patternItem.key.name;
    }
  } else if (node.type === Syntax.ArrayPattern) {
    return tmpName + '[' + idx + ']';
  }
 }

 function getPatternItemValue(node, patternItem) {
  return node.type === Syntax.ObjectPattern
    ? patternItem.value
    : patternItem;
 }

 // -------------------------------------------------------
 // 2. Assignment expression.
 //
 // [a, b] = [b, a];
 // ({x, y} = {y, x});
 // -------------------------------------------------------

 function visitStructuredAssignment(traverse, node, path, state) {
  var exprNode = node.expression;
  utils.append('var ' + utils.getTempVar(state.localScope.tempVarIndex) + '=', state);

  utils.catchupWhiteSpace(exprNode.right.range[0], state);
  traverse(exprNode.right, path, state);
  utils.catchup(exprNode.right.range[1], state);

  utils.append(
    ';' + getDestructuredComponents(exprNode.left, state) + ';',
    state
  );

  utils.catchupWhiteSpace(node.range[1], state);
  state.localScope.tempVarIndex++;
  return false;
 }

 visitStructuredAssignment.test = function(node, path, state) {
  // We consider the expression statement rather than just assignment
  // expression to cover case with object patters which should be
  // wrapped in grouping operator: ({x, y} = {y, x});
  return node.type === Syntax.ExpressionStatement &&
    node.expression.type === Syntax.AssignmentExpression &&
    isStructuredPattern(node.expression.left);
 };

 // -------------------------------------------------------
 // 3. Structured parameter.
 //
 // function foo({x, y}) { ... }
 // -------------------------------------------------------

 function visitStructuredParameter(traverse, node, path, state) {
  utils.append(utils.getTempVar(getParamIndex(node, path)), state);
  utils.catchupWhiteSpace(node.range[1], state);
  return true;
 }

 function getParamIndex(paramNode, path) {
  var funcNode = path[0];
  var tmpIndex = 0;
  for (var k = 0; k < funcNode.params.length; k++) {
    var param = funcNode.params[k];
    if (param === paramNode) {
      break;
    }
    if (isStructuredPattern(param)) {
      tmpIndex++;
    }
  }
  return tmpIndex;
 }

 visitStructuredParameter.test = function(node, path, state) {
  return isStructuredPattern(node) && isFunctionNode(path[0]);
 };

 function isFunctionNode(node) {
  return (node.type == Syntax.FunctionDeclaration ||
    node.type == Syntax.FunctionExpression ||
    node.type == Syntax.MethodDefinition ||
    node.type == Syntax.ArrowFunctionExpression);
 }

 // -------------------------------------------------------
 // 4. Function body for structured parameters.
 //
 // function foo({x, y}) { x; y; }
 // -------------------------------------------------------

 function visitFunctionBodyForStructuredParameter(traverse, node, path, state) {
  var funcNode = path[0];

  utils.catchup(funcNode.body.range[0] + 1, state);
  renderDestructuredComponents(funcNode, state);

  if (funcNode.rest) {
    utils.append(
      restParamVisitors.renderRestParamSetup(funcNode, state),
      state
    );
  }

  return true;
 }

 function renderDestructuredComponents(funcNode, state) {
  var destructuredComponents = [];

  for (var k = 0; k < funcNode.params.length; k++) {
    var param = funcNode.params[k];
    if (isStructuredPattern(param)) {
      destructuredComponents.push(
        getDestructuredComponents(param, state)
      );
      state.localScope.tempVarIndex++;
    }
  }

  if (destructuredComponents.length) {
    utils.append('var ' + destructuredComponents.join(',') + ';', state);
  }
 }

 visitFunctionBodyForStructuredParameter.test = function(node, path, state) {
  return node.type === Syntax.BlockStatement && isFunctionNode(path[0]);
 };

 exports.visitorList = [
  visitStructuredVariable,
  visitStructuredAssignment,
  visitStructuredParameter,
  visitFunctionBodyForStructuredParameter
 ];

 exports.renderDestructuredComponents = renderDestructuredComponents;


 },{"../src/utils":22,"./es6-rest-param-visitors":28,"./es7-rest-property-helpers":30,"./reserved-words-helper":32,"esprima-fb":9}],26:[function(_dereq_,module,exports){
 /**
 * Copyright 2013 Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

 /*jslint node:true*/

 /**
 * Desugars concise methods of objects to function expressions.
 *
 * var foo = {
 *   method(x, y) { ... }
 * };
 *
 * var foo = {
 *   method: function(x, y) { ... }
 * };
 *
 */

 var Syntax = _dereq_('esprima-fb').Syntax;
 var utils = _dereq_('../src/utils');
 var reservedWordsHelper = _dereq_('./reserved-words-helper');

 function visitObjectConciseMethod(traverse, node, path, state) {
  var isGenerator = node.value.generator;
  if (isGenerator) {
    utils.catchupWhiteSpace(node.range[0] + 1, state);
  }
  if (node.computed) { // [<expr>]() { ...}
    utils.catchup(node.key.range[1] + 1, state);
  } else if (reservedWordsHelper.isReservedWord(node.key.name)) {
    utils.catchup(node.key.range[0], state);
    utils.append('"', state);
    utils.catchup(node.key.range[1], state);
    utils.append('"', state);
  }

  utils.catchup(node.key.range[1], state);
  utils.append(
    ':function' + (isGenerator ? '*' : ''),
    state
  );
  path.unshift(node);
  traverse(node.value, path, state);
  path.shift();
  return false;
 }

 visitObjectConciseMethod.test = function(node, path, state) {
  return node.type === Syntax.Property &&
    node.value.type === Syntax.FunctionExpression &&
    node.method === true;
 };

 exports.visitorList = [
  visitObjectConciseMethod
 ];

 },{"../src/utils":22,"./reserved-words-helper":32,"esprima-fb":9}],27:[function(_dereq_,module,exports){
 /**
 * Copyright 2013 Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

 /*jslint node: true*/

 /**
 * Desugars ES6 Object Literal short notations into ES3 full notation.
 *
 * // Easier return values.
 * function foo(x, y) {
 *   return {x, y}; // {x: x, y: y}
 * };
 *
 * // Destructuring.
 * function init({port, ip, coords: {x, y}}) { ... }
 *
 */
 var Syntax = _dereq_('esprima-fb').Syntax;
 var utils = _dereq_('../src/utils');

 /**
 * @public
 */
 function visitObjectLiteralShortNotation(traverse, node, path, state) {
  utils.catchup(node.key.range[1], state);
  utils.append(':' + node.key.name, state);
  return false;
 }

 visitObjectLiteralShortNotation.test = function(node, path, state) {
  return node.type === Syntax.Property &&
    node.kind === 'init' &&
    node.shorthand === true &&
    path[0].type !== Syntax.ObjectPattern;
 };

 exports.visitorList = [
  visitObjectLiteralShortNotation
 ];


 },{"../src/utils":22,"esprima-fb":9}],28:[function(_dereq_,module,exports){
 /**
 * Copyright 2013 Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

 /*jslint node:true*/

 /**
 * Desugars ES6 rest parameters into an ES3 arguments array.
 *
 * function printf(template, ...args) {
 *   args.forEach(...);
 * }
 *
 * We could use `Array.prototype.slice.call`, but that usage of arguments causes
 * functions to be deoptimized in V8, so instead we use a for-loop.
 *
 * function printf(template) {
 *   for (var args = [], $__0 = 1, $__1 = arguments.length; $__0 < $__1; $__0++)
 *     args.push(arguments[$__0]);
 *   args.forEach(...);
 * }
 *
 */
 var Syntax = _dereq_('esprima-fb').Syntax;
 var utils = _dereq_('../src/utils');



 function _nodeIsFunctionWithRestParam(node) {
  return (node.type === Syntax.FunctionDeclaration
          || node.type === Syntax.FunctionExpression
          || node.type === Syntax.ArrowFunctionExpression)
         && node.rest;
 }

 function visitFunctionParamsWithRestParam(traverse, node, path, state) {
  if (node.parametricType) {
    utils.catchup(node.parametricType.range[0], state);
    path.unshift(node);
    traverse(node.parametricType, path, state);
    path.shift();
  }

  // Render params.
  if (node.params.length) {
    path.unshift(node);
    traverse(node.params, path, state);
    path.shift();
  } else {
    // -3 is for ... of the rest.
    utils.catchup(node.rest.range[0] - 3, state);
  }
  utils.catchupWhiteSpace(node.rest.range[1], state);

  path.unshift(node);
  traverse(node.body, path, state);
  path.shift();

  return false;
 }

 visitFunctionParamsWithRestParam.test = function(node, path, state) {
  return _nodeIsFunctionWithRestParam(node);
 };

 function renderRestParamSetup(functionNode, state) {
  var idx = state.localScope.tempVarIndex++;
  var len = state.localScope.tempVarIndex++;

  return 'for (var ' + functionNode.rest.name + '=[],' +
    utils.getTempVarWithValue(idx, functionNode.params.length) + ',' +
    utils.getTempVarWithValue(len, 'arguments.length') + ';' +
    utils.getTempVar(idx) + '<' +  utils.getTempVar(len) + ';' +
    utils.getTempVar(idx) + '++) ' +
    functionNode.rest.name + '.push(arguments[' + utils.getTempVar(idx) + ']);';
 }

 function visitFunctionBodyWithRestParam(traverse, node, path, state) {
  utils.catchup(node.range[0] + 1, state);
  var parentNode = path[0];
  utils.append(renderRestParamSetup(parentNode, state), state);
  return true;
 }

 visitFunctionBodyWithRestParam.test = function(node, path, state) {
  return node.type === Syntax.BlockStatement
         && _nodeIsFunctionWithRestParam(path[0]);
 };

 exports.renderRestParamSetup = renderRestParamSetup;
 exports.visitorList = [
  visitFunctionParamsWithRestParam,
  visitFunctionBodyWithRestParam
 ];

 },{"../src/utils":22,"esprima-fb":9}],29:[function(_dereq_,module,exports){
 /**
 * Copyright 2013 Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

 /*jslint node:true*/

 /**
 * @typechecks
 */
 'use strict';

 var Syntax = _dereq_('esprima-fb').Syntax;
 var utils = _dereq_('../src/utils');

 /**
 * http://people.mozilla.org/~jorendorff/es6-draft.html#sec-12.1.9
 */
 function visitTemplateLiteral(traverse, node, path, state) {
  var templateElements = node.quasis;

  utils.append('(', state);
  for (var ii = 0; ii < templateElements.length; ii++) {
    var templateElement = templateElements[ii];
    if (templateElement.value.raw !== '') {
      utils.append(getCookedValue(templateElement), state);
      if (!templateElement.tail) {
        // + between element and substitution
        utils.append(' + ', state);
      }
      // maintain line numbers
      utils.move(templateElement.range[0], state);
      utils.catchupNewlines(templateElement.range[1], state);
    } else {  // templateElement.value.raw === ''
      // Concatenat adjacent substitutions, e.g. `${x}${y}`. Empty templates
      // appear before the first and after the last element - nothing to add in
      // those cases.
      if (ii > 0 && !templateElement.tail) {
        // + between substitution and substitution
        utils.append(' + ', state);
      }
    }

    utils.move(templateElement.range[1], state);
    if (!templateElement.tail) {
      var substitution = node.expressions[ii];
      if (substitution.type === Syntax.Identifier ||
          substitution.type === Syntax.MemberExpression ||
          substitution.type === Syntax.CallExpression) {
        utils.catchup(substitution.range[1], state);
      } else {
        utils.append('(', state);
        traverse(substitution, path, state);
        utils.catchup(substitution.range[1], state);
        utils.append(')', state);
      }
      // if next templateElement isn't empty...
      if (templateElements[ii + 1].value.cooked !== '') {
        utils.append(' + ', state);
      }
    }
  }
  utils.move(node.range[1], state);
  utils.append(')', state);
  return false;
 }

 visitTemplateLiteral.test = function(node, path, state) {
  return node.type === Syntax.TemplateLiteral;
 };

 /**
 * http://people.mozilla.org/~jorendorff/es6-draft.html#sec-12.2.6
 */
 function visitTaggedTemplateExpression(traverse, node, path, state) {
  var template = node.quasi;
  var numQuasis = template.quasis.length;

  // print the tag
  utils.move(node.tag.range[0], state);
  traverse(node.tag, path, state);
  utils.catchup(node.tag.range[1], state);

  // print array of template elements
  utils.append('(function() { var siteObj = [', state);
  for (var ii = 0; ii < numQuasis; ii++) {
    utils.append(getCookedValue(template.quasis[ii]), state);
    if (ii !== numQuasis - 1) {
      utils.append(', ', state);
    }
  }
  utils.append(']; siteObj.raw = [', state);
  for (ii = 0; ii < numQuasis; ii++) {
    utils.append(getRawValue(template.quasis[ii]), state);
    if (ii !== numQuasis - 1) {
      utils.append(', ', state);
    }
  }
  utils.append(
    ']; Object.freeze(siteObj.raw); Object.freeze(siteObj); return siteObj; }()',
    state
  );

  // print substitutions
  if (numQuasis > 1) {
    for (ii = 0; ii < template.expressions.length; ii++) {
      var expression = template.expressions[ii];
      utils.append(', ', state);

      // maintain line numbers by calling catchupWhiteSpace over the whole
      // previous TemplateElement
      utils.move(template.quasis[ii].range[0], state);
      utils.catchupNewlines(template.quasis[ii].range[1], state);

      utils.move(expression.range[0], state);
      traverse(expression, path, state);
      utils.catchup(expression.range[1], state);
    }
  }

  // print blank lines to push the closing ) down to account for the final
  // TemplateElement.
  utils.catchupNewlines(node.range[1], state);

  utils.append(')', state);

  return false;
 }

 visitTaggedTemplateExpression.test = function(node, path, state) {
  return node.type === Syntax.TaggedTemplateExpression;
 };

 function getCookedValue(templateElement) {
  return JSON.stringify(templateElement.value.cooked);
 }

 function getRawValue(templateElement) {
  return JSON.stringify(templateElement.value.raw);
 }

 exports.visitorList = [
  visitTemplateLiteral,
  visitTaggedTemplateExpression
 ];

 },{"../src/utils":22,"esprima-fb":9}],30:[function(_dereq_,module,exports){
 /**
 * Copyright 2013 Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

 /*jslint node:true*/

 /**
 * Desugars ES7 rest properties into ES5 object iteration.
 */

 var Syntax = _dereq_('esprima-fb').Syntax;
 var utils = _dereq_('../src/utils');

 // TODO: This is a pretty massive helper, it should only be defined once, in the
 // transform's runtime environment. We don't currently have a runtime though.
 var restFunction =
  '(function(source, exclusion) {' +
    'var rest = {};' +
    'var hasOwn = Object.prototype.hasOwnProperty;' +
    'if (source == null) {' +
      'throw new TypeError();' +
    '}' +
    'for (var key in source) {' +
      'if (hasOwn.call(source, key) && !hasOwn.call(exclusion, key)) {' +
        'rest[key] = source[key];' +
      '}' +
    '}' +
    'return rest;' +
  '})';

 function getPropertyNames(properties) {
  var names = [];
  for (var i = 0; i < properties.length; i++) {
    var property = properties[i];
    if (property.type === Syntax.SpreadProperty) {
      continue;
    }
    if (property.type === Syntax.Identifier) {
      names.push(property.name);
    } else {
      names.push(property.key.name);
    }
  }
  return names;
 }

 function getRestFunctionCall(source, exclusion) {
  return restFunction + '(' + source + ',' + exclusion + ')';
 }

 function getSimpleShallowCopy(accessorExpression) {
  // This could be faster with 'Object.assign({}, ' + accessorExpression + ')'
  // but to unify code paths and avoid a ES6 dependency we use the same
  // helper as for the exclusion case.
  return getRestFunctionCall(accessorExpression, '{}');
 }

 function renderRestExpression(accessorExpression, excludedProperties) {
  var excludedNames = getPropertyNames(excludedProperties);
  if (!excludedNames.length) {
    return getSimpleShallowCopy(accessorExpression);
  }
  return getRestFunctionCall(
    accessorExpression,
    '{' + excludedNames.join(':1,') + ':1}'
  );
 }

 exports.renderRestExpression = renderRestExpression;

 },{"../src/utils":22,"esprima-fb":9}],31:[function(_dereq_,module,exports){
 /**
 * Copyright 2004-present Facebook. All Rights Reserved.
 */
 /*global exports:true*/

 /**
 * Implements ES7 object spread property.
 * https://gist.github.com/sebmarkbage/aa849c7973cb4452c547
 *
 * { ...a, x: 1 }
 *
 * Object.assign({}, a, {x: 1 })
 *
 */

 var Syntax = _dereq_('esprima-fb').Syntax;
 var utils = _dereq_('../src/utils');

 function visitObjectLiteralSpread(traverse, node, path, state) {
  utils.catchup(node.range[0], state);

  utils.append('Object.assign({', state);

  // Skip the original {
  utils.move(node.range[0] + 1, state);

  var previousWasSpread = false;

  for (var i = 0; i < node.properties.length; i++) {
    var property = node.properties[i];
    if (property.type === Syntax.SpreadProperty) {

      // Close the previous object or initial object
      if (!previousWasSpread) {
        utils.append('}', state);
      }

      if (i === 0) {
        // Normally there will be a comma when we catch up, but not before
        // the first property.
        utils.append(',', state);
      }

      utils.catchup(property.range[0], state);

      // skip ...
      utils.move(property.range[0] + 3, state);

      traverse(property.argument, path, state);

      utils.catchup(property.range[1], state);

      previousWasSpread = true;

    } else {

      utils.catchup(property.range[0], state);

      if (previousWasSpread) {
        utils.append('{', state);
      }

      traverse(property, path, state);

      utils.catchup(property.range[1], state);

      previousWasSpread = false;

    }
  }

  // Strip any non-whitespace between the last item and the end.
  // We only catch up on whitespace so that we ignore any trailing commas which
  // are stripped out for IE8 support. Unfortunately, this also strips out any
  // trailing comments.
  utils.catchupWhiteSpace(node.range[1] - 1, state);

  // Skip the trailing }
  utils.move(node.range[1], state);

  if (!previousWasSpread) {
    utils.append('}', state);
  }

  utils.append(')', state);
  return false;
 }

 visitObjectLiteralSpread.test = function(node, path, state) {
  if (node.type !== Syntax.ObjectExpression) {
    return false;
  }
  // Tight loop optimization
  var hasAtLeastOneSpreadProperty = false;
  for (var i = 0; i < node.properties.length; i++) {
    var property = node.properties[i];
    if (property.type === Syntax.SpreadProperty) {
      hasAtLeastOneSpreadProperty = true;
    } else if (property.kind !== 'init') {
      return false;
    }
  }
  return hasAtLeastOneSpreadProperty;
 };

 exports.visitorList = [
  visitObjectLiteralSpread
 ];

 },{"../src/utils":22,"esprima-fb":9}],32:[function(_dereq_,module,exports){
 /**
 * Copyright 2014 Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

 var KEYWORDS = [
  'break', 'do', 'in', 'typeof', 'case', 'else', 'instanceof', 'var', 'catch',
  'export', 'new', 'void', 'class', 'extends', 'return', 'while', 'const',
  'finally', 'super', 'with', 'continue', 'for', 'switch', 'yield', 'debugger',
  'function', 'this', 'default', 'if', 'throw', 'delete', 'import', 'try'
 ];

 var FUTURE_RESERVED_WORDS = [
  'enum', 'await', 'implements', 'package', 'protected', 'static', 'interface',
  'private', 'public'
 ];

 var LITERALS = [
  'null',
  'true',
  'false'
 ];

 // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-reserved-words
 var RESERVED_WORDS = [].concat(
  KEYWORDS,
  FUTURE_RESERVED_WORDS,
  LITERALS
 );

 var reservedWordsMap = Object.create(null);
 RESERVED_WORDS.forEach(function(k) {
    reservedWordsMap[k] = true;
 });

 exports.isReservedWord = function(word) {
  return !!reservedWordsMap[word];
 };

 },{}],33:[function(_dereq_,module,exports){
 var esprima = _dereq_('esprima-fb');
 var utils = _dereq_('../src/utils');

 var Syntax = esprima.Syntax;

 function _isFunctionNode(node) {
  return node.type === Syntax.FunctionDeclaration
         || node.type === Syntax.FunctionExpression
         || node.type === Syntax.ArrowFunctionExpression;
 }

 function visitClassProperty(traverse, node, path, state) {
  utils.catchup(node.range[0], state);
  utils.catchupWhiteOut(node.range[1], state);
  return false;
 }
 visitClassProperty.test = function(node, path, state) {
  return node.type === Syntax.ClassProperty;
 };

 function visitTypeAlias(traverse, node, path, state) {
  utils.catchupWhiteOut(node.range[1], state);
  return false;
 }
 visitTypeAlias.test = function(node, path, state) {
  return node.type === Syntax.TypeAlias;
 };

 function visitInterfaceDeclaration(traverse, node, path, state) {
  utils.catchupWhiteOut(node.range[1], state);
  return false;
 }
 visitInterfaceDeclaration.test = function(node, path, state) {
  return node.type === Syntax.InterfaceDeclaration;
 };

 function visitDeclare(traverse, node, path, state) {
  utils.catchupWhiteOut(node.range[1], state);
  return false;
 }
 visitDeclare.test = function(node, path, state) {
  switch (node.type) {
  case Syntax.DeclareVariable:
  case Syntax.DeclareFunction:
  case Syntax.DeclareClass:
  case Syntax.DeclareModule: return true
  }
  return false;
 }

 function visitFunctionParametricAnnotation(traverse, node, path, state) {
  utils.catchup(node.range[0], state);
  utils.catchupWhiteOut(node.range[1], state);
  return false;
 }
 visitFunctionParametricAnnotation.test = function(node, path, state) {
  return node.type === Syntax.TypeParameterDeclaration
         && path[0]
         && _isFunctionNode(path[0])
         && node === path[0].typeParameters;
 };

 function visitFunctionReturnAnnotation(traverse, node, path, state) {
  utils.catchup(node.range[0], state);
  utils.catchupWhiteOut(node.range[1], state);
  return false;
 }
 visitFunctionReturnAnnotation.test = function(node, path, state) {
  return path[0] && _isFunctionNode(path[0]) && node === path[0].returnType;
 };

 function visitOptionalFunctionParameterAnnotation(traverse, node, path, state) {
  utils.catchup(node.range[0] + node.name.length, state);
  utils.catchupWhiteOut(node.range[1], state);
  return false;
 }
 visitOptionalFunctionParameterAnnotation.test = function(node, path, state) {
  return node.type === Syntax.Identifier
         && node.optional
         && path[0]
         && _isFunctionNode(path[0]);
 };

 function visitTypeAnnotatedIdentifier(traverse, node, path, state) {
  utils.catchup(node.typeAnnotation.range[0], state);
  utils.catchupWhiteOut(node.typeAnnotation.range[1], state);
  return false;
 }
 visitTypeAnnotatedIdentifier.test = function(node, path, state) {
  return node.type === Syntax.Identifier && node.typeAnnotation;
 };

 function visitTypeAnnotatedObjectOrArrayPattern(traverse, node, path, state) {
  utils.catchup(node.typeAnnotation.range[0], state);
  utils.catchupWhiteOut(node.typeAnnotation.range[1], state);
  return false;
 }
 visitTypeAnnotatedObjectOrArrayPattern.test = function(node, path, state) {
  var rightType = node.type === Syntax.ObjectPattern
                || node.type === Syntax.ArrayPattern;
  return rightType && node.typeAnnotation;
 };

 /**
 * Methods cause trouble, since esprima parses them as a key/value pair, where
 * the location of the value starts at the method body. For example
 * { bar(x:number,...y:Array<number>):number {} }
 * is parsed as
 * { bar: function(x: number, ...y:Array<number>): number {} }
 * except that the location of the FunctionExpression value is 40-something,
 * which is the location of the function body. This means that by the time we
 * visit the params, rest param, and return type organically, we've already
 * catchup()'d passed them.
 */
 function visitMethod(traverse, node, path, state) {
  path.unshift(node);
  traverse(node.key, path, state);

  path.unshift(node.value);
  traverse(node.value.params, path, state);
  node.value.rest && traverse(node.value.rest, path, state);
  node.value.returnType && traverse(node.value.returnType, path, state);
  traverse(node.value.body, path, state);

  path.shift();

  path.shift();
  return false;
 }

 visitMethod.test = function(node, path, state) {
  return (node.type === "Property" && (node.method || node.kind === "set" || node.kind === "get"))
      || (node.type === "MethodDefinition");
 };

 exports.visitorList = [
  visitClassProperty,
  visitDeclare,
  visitInterfaceDeclaration,
  visitFunctionParametricAnnotation,
  visitFunctionReturnAnnotation,
  visitMethod,
  visitOptionalFunctionParameterAnnotation,
  visitTypeAlias,
  visitTypeAnnotatedIdentifier,
  visitTypeAnnotatedObjectOrArrayPattern
 ];

 },{"../src/utils":22,"esprima-fb":9}],34:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */
 /*global exports:true*/
 "use strict";

 var Syntax = _dereq_('jstransform').Syntax;
 var utils = _dereq_('jstransform/src/utils');

 var FALLBACK_TAGS = _dereq_('./xjs').knownTags;
 var renderXJSExpressionContainer =
  _dereq_('./xjs').renderXJSExpressionContainer;
 var renderXJSLiteral = _dereq_('./xjs').renderXJSLiteral;
 var quoteAttrName = _dereq_('./xjs').quoteAttrName;

 var trimLeft = _dereq_('./xjs').trimLeft;

 /**
 * Customized desugar processor for React JSX. Currently:
 *
 * <X> </X> => React.createElement(X, null)
 * <X prop="1" /> => React.createElement(X, {prop: '1'}, null)
 * <X prop="2"><Y /></X> => React.createElement(X, {prop:'2'},
 *   React.createElement(Y, null)
 * )
 * <div /> => React.createElement("div", null)
 */

 /**
 * Removes all non-whitespace/parenthesis characters
 */
 var reNonWhiteParen = /([^\s\(\)])/g;
 function stripNonWhiteParen(value) {
  return value.replace(reNonWhiteParen, '');
 }

 var tagConvention = /^[a-z]|\-/;
 function isTagName(name) {
  return tagConvention.test(name);
 }

 function visitReactTag(traverse, object, path, state) {
  var openingElement = object.openingElement;
  var nameObject = openingElement.name;
  var attributesObject = openingElement.attributes;

  utils.catchup(openingElement.range[0], state, trimLeft);

  if (nameObject.type === Syntax.XJSNamespacedName && nameObject.namespace) {
    throw new Error('Namespace tags are not supported. ReactJSX is not XML.');
  }

  // We assume that the React runtime is already in scope
  utils.append('React.createElement(', state);

  // Identifiers with lower case or hypthens are fallback tags (strings).
  // XJSMemberExpressions are not.
  if (nameObject.type === Syntax.XJSIdentifier && isTagName(nameObject.name)) {
    // This is a temporary error message to assist upgrades
    if (!FALLBACK_TAGS.hasOwnProperty(nameObject.name)) {
      throw new Error(
        'Lower case component names (' + nameObject.name + ') are no longer ' +
        'supported in JSX: See http://fb.me/react-jsx-lower-case'
      );
    }

    utils.append('"' + nameObject.name + '"', state);
    utils.move(nameObject.range[1], state);
  } else {
    // Use utils.catchup in this case so we can easily handle
    // XJSMemberExpressions which look like Foo.Bar.Baz. This also handles
    // XJSIdentifiers that aren't fallback tags.
    utils.move(nameObject.range[0], state);
    utils.catchup(nameObject.range[1], state);
  }

  utils.append(', ', state);

  var hasAttributes = attributesObject.length;

  var hasAtLeastOneSpreadProperty = attributesObject.some(function(attr) {
    return attr.type === Syntax.XJSSpreadAttribute;
  });

  // if we don't have any attributes, pass in null
  if (hasAtLeastOneSpreadProperty) {
    utils.append('React.__spread({', state);
  } else if (hasAttributes) {
    utils.append('{', state);
  } else {
    utils.append('null', state);
  }

  // keep track of if the previous attribute was a spread attribute
  var previousWasSpread = false;

  // write attributes
  attributesObject.forEach(function(attr, index) {
    var isLast = index === attributesObject.length - 1;

    if (attr.type === Syntax.XJSSpreadAttribute) {
      // Close the previous object or initial object
      if (!previousWasSpread) {
        utils.append('}, ', state);
      }

      // Move to the expression start, ignoring everything except parenthesis
      // and whitespace.
      utils.catchup(attr.range[0], state, stripNonWhiteParen);
      // Plus 1 to skip `{`.
      utils.move(attr.range[0] + 1, state);
      utils.catchup(attr.argument.range[0], state, stripNonWhiteParen);

      traverse(attr.argument, path, state);

      utils.catchup(attr.argument.range[1], state);

      // Move to the end, ignoring parenthesis and the closing `}`
      utils.catchup(attr.range[1] - 1, state, stripNonWhiteParen);

      if (!isLast) {
        utils.append(', ', state);
      }

      utils.move(attr.range[1], state);

      previousWasSpread = true;

      return;
    }

    // If the next attribute is a spread, we're effective last in this object
    if (!isLast) {
      isLast = attributesObject[index + 1].type === Syntax.XJSSpreadAttribute;
    }

    if (attr.name.namespace) {
      throw new Error(
         'Namespace attributes are not supported. ReactJSX is not XML.');
    }
    var name = attr.name.name;

    utils.catchup(attr.range[0], state, trimLeft);

    if (previousWasSpread) {
      utils.append('{', state);
    }

    utils.append(quoteAttrName(name), state);
    utils.append(': ', state);

    if (!attr.value) {
      state.g.buffer += 'true';
      state.g.position = attr.name.range[1];
      if (!isLast) {
        utils.append(', ', state);
      }
    } else {
      utils.move(attr.name.range[1], state);
      // Use catchupNewlines to skip over the '=' in the attribute
      utils.catchupNewlines(attr.value.range[0], state);
      if (attr.value.type === Syntax.Literal) {
        renderXJSLiteral(attr.value, isLast, state);
      } else {
        renderXJSExpressionContainer(traverse, attr.value, isLast, path, state);
      }
    }

    utils.catchup(attr.range[1], state, trimLeft);

    previousWasSpread = false;

  });

  if (!openingElement.selfClosing) {
    utils.catchup(openingElement.range[1] - 1, state, trimLeft);
    utils.move(openingElement.range[1], state);
  }

  if (hasAttributes && !previousWasSpread) {
    utils.append('}', state);
  }

  if (hasAtLeastOneSpreadProperty) {
    utils.append(')', state);
  }

  // filter out whitespace
  var childrenToRender = object.children.filter(function(child) {
    return !(child.type === Syntax.Literal
             && typeof child.value === 'string'
             && child.value.match(/^[ \t]*[\r\n][ \t\r\n]*$/));
  });
  if (childrenToRender.length > 0) {
    var lastRenderableIndex;

    childrenToRender.forEach(function(child, index) {
      if (child.type !== Syntax.XJSExpressionContainer ||
          child.expression.type !== Syntax.XJSEmptyExpression) {
        lastRenderableIndex = index;
      }
    });

    if (lastRenderableIndex !== undefined) {
      utils.append(', ', state);
    }

    childrenToRender.forEach(function(child, index) {
      utils.catchup(child.range[0], state, trimLeft);

      var isLast = index >= lastRenderableIndex;

      if (child.type === Syntax.Literal) {
        renderXJSLiteral(child, isLast, state);
      } else if (child.type === Syntax.XJSExpressionContainer) {
        renderXJSExpressionContainer(traverse, child, isLast, path, state);
      } else {
        traverse(child, path, state);
        if (!isLast) {
          utils.append(', ', state);
        }
      }

      utils.catchup(child.range[1], state, trimLeft);
    });
  }

  if (openingElement.selfClosing) {
    // everything up to />
    utils.catchup(openingElement.range[1] - 2, state, trimLeft);
    utils.move(openingElement.range[1], state);
  } else {
    // everything up to </ sdflksjfd>
    utils.catchup(object.closingElement.range[0], state, trimLeft);
    utils.move(object.closingElement.range[1], state);
  }

  utils.append(')', state);
  return false;
 }

 visitReactTag.test = function(object, path, state) {
  return object.type === Syntax.XJSElement;
 };

 exports.visitorList = [
  visitReactTag
 ];

 },{"./xjs":36,"jstransform":21,"jstransform/src/utils":22}],35:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */
 /*global exports:true*/
 "use strict";

 var Syntax = _dereq_('jstransform').Syntax;
 var utils = _dereq_('jstransform/src/utils');

 function addDisplayName(displayName, object, state) {
  if (object &&
      object.type === Syntax.CallExpression &&
      object.callee.type === Syntax.MemberExpression &&
      object.callee.object.type === Syntax.Identifier &&
      object.callee.object.name === 'React' &&
      object.callee.property.type === Syntax.Identifier &&
      object.callee.property.name === 'createClass' &&
      object['arguments'].length === 1 &&
      object['arguments'][0].type === Syntax.ObjectExpression) {
    // Verify that the displayName property isn't already set
    var properties = object['arguments'][0].properties;
    var safe = properties.every(function(property) {
      var value = property.key.type === Syntax.Identifier ?
        property.key.name :
        property.key.value;
      return value !== 'displayName';
    });

    if (safe) {
      utils.catchup(object['arguments'][0].range[0] + 1, state);
      utils.append("displayName: '" + displayName + "',", state);
    }
  }
 }

 /**
 * Transforms the following:
 *
 * var MyComponent = React.createClass({
 *    render: ...
 * });
 *
 * into:
 *
 * var MyComponent = React.createClass({
 *    displayName: 'MyComponent',
 *    render: ...
 * });
 *
 * Also catches:
 *
 * MyComponent = React.createClass(...);
 * exports.MyComponent = React.createClass(...);
 * module.exports = {MyComponent: React.createClass(...)};
 */
 function visitReactDisplayName(traverse, object, path, state) {
  var left, right;

  if (object.type === Syntax.AssignmentExpression) {
    left = object.left;
    right = object.right;
  } else if (object.type === Syntax.Property) {
    left = object.key;
    right = object.value;
  } else if (object.type === Syntax.VariableDeclarator) {
    left = object.id;
    right = object.init;
  }

  if (left && left.type === Syntax.MemberExpression) {
    left = left.property;
  }
  if (left && left.type === Syntax.Identifier) {
    addDisplayName(left.name, right, state);
  }
 }

 visitReactDisplayName.test = function(object, path, state) {
  return (
    object.type === Syntax.AssignmentExpression ||
    object.type === Syntax.Property ||
    object.type === Syntax.VariableDeclarator
  );
 };

 exports.visitorList = [
  visitReactDisplayName
 ];

 },{"jstransform":21,"jstransform/src/utils":22}],36:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */
 /*global exports:true*/
 "use strict";
 var Syntax = _dereq_('jstransform').Syntax;
 var utils = _dereq_('jstransform/src/utils');

 var knownTags = {
  a: true,
  abbr: true,
  address: true,
  applet: true,
  area: true,
  article: true,
  aside: true,
  audio: true,
  b: true,
  base: true,
  bdi: true,
  bdo: true,
  big: true,
  blockquote: true,
  body: true,
  br: true,
  button: true,
  canvas: true,
  caption: true,
  circle: true,
  cite: true,
  code: true,
  col: true,
  colgroup: true,
  command: true,
  data: true,
  datalist: true,
  dd: true,
  defs: true,
  del: true,
  details: true,
  dfn: true,
  dialog: true,
  div: true,
  dl: true,
  dt: true,
  ellipse: true,
  em: true,
  embed: true,
  fieldset: true,
  figcaption: true,
  figure: true,
  footer: true,
  form: true,
  g: true,
  h1: true,
  h2: true,
  h3: true,
  h4: true,
  h5: true,
  h6: true,
  head: true,
  header: true,
  hgroup: true,
  hr: true,
  html: true,
  i: true,
  iframe: true,
  img: true,
  input: true,
  ins: true,
  kbd: true,
  keygen: true,
  label: true,
  legend: true,
  li: true,
  line: true,
  linearGradient: true,
  link: true,
  main: true,
  map: true,
  mark: true,
  marquee: true,
  mask: false,
  menu: true,
  menuitem: true,
  meta: true,
  meter: true,
  nav: true,
  noscript: true,
  object: true,
  ol: true,
  optgroup: true,
  option: true,
  output: true,
  p: true,
  param: true,
  path: true,
  pattern: false,
  picture: true,
  polygon: true,
  polyline: true,
  pre: true,
  progress: true,
  q: true,
  radialGradient: true,
  rect: true,
  rp: true,
  rt: true,
  ruby: true,
  s: true,
  samp: true,
  script: true,
  section: true,
  select: true,
  small: true,
  source: true,
  span: true,
  stop: true,
  strong: true,
  style: true,
  sub: true,
  summary: true,
  sup: true,
  svg: true,
  table: true,
  tbody: true,
  td: true,
  text: true,
  textarea: true,
  tfoot: true,
  th: true,
  thead: true,
  time: true,
  title: true,
  tr: true,
  track: true,
  tspan: true,
  u: true,
  ul: true,
  'var': true,
  video: true,
  wbr: true
 };

 function renderXJSLiteral(object, isLast, state, start, end) {
  var lines = object.value.split(/\r\n|\n|\r/);

  if (start) {
    utils.append(start, state);
  }

  var lastNonEmptyLine = 0;

  lines.forEach(function (line, index) {
    if (line.match(/[^ \t]/)) {
      lastNonEmptyLine = index;
    }
  });

  lines.forEach(function (line, index) {
    var isFirstLine = index === 0;
    var isLastLine = index === lines.length - 1;
    var isLastNonEmptyLine = index === lastNonEmptyLine;

    // replace rendered whitespace tabs with spaces
    var trimmedLine = line.replace(/\t/g, ' ');

    // trim whitespace touching a newline
    if (!isFirstLine) {
      trimmedLine = trimmedLine.replace(/^[ ]+/, '');
    }
    if (!isLastLine) {
      trimmedLine = trimmedLine.replace(/[ ]+$/, '');
    }

    if (!isFirstLine) {
      utils.append(line.match(/^[ \t]*/)[0], state);
    }

    if (trimmedLine || isLastNonEmptyLine) {
      utils.append(
        JSON.stringify(trimmedLine) +
        (!isLastNonEmptyLine ? " + ' ' +" : ''),
        state);

      if (isLastNonEmptyLine) {
        if (end) {
          utils.append(end, state);
        }
        if (!isLast) {
          utils.append(', ', state);
        }
      }

      // only restore tail whitespace if line had literals
      if (trimmedLine && !isLastLine) {
        utils.append(line.match(/[ \t]*$/)[0], state);
      }
    }

    if (!isLastLine) {
      utils.append('\n', state);
    }
  });

  utils.move(object.range[1], state);
 }

 function renderXJSExpressionContainer(traverse, object, isLast, path, state) {
  // Plus 1 to skip `{`.
  utils.move(object.range[0] + 1, state);
  traverse(object.expression, path, state);

  if (!isLast && object.expression.type !== Syntax.XJSEmptyExpression) {
    // If we need to append a comma, make sure to do so after the expression.
    utils.catchup(object.expression.range[1], state, trimLeft);
    utils.append(', ', state);
  }

  // Minus 1 to skip `}`.
  utils.catchup(object.range[1] - 1, state, trimLeft);
  utils.move(object.range[1], state);
  return false;
 }

 function quoteAttrName(attr) {
  // Quote invalid JS identifiers.
  if (!/^[a-z_$][a-z\d_$]*$/i.test(attr)) {
    return "'" + attr + "'";
  }
  return attr;
 }

 function trimLeft(value) {
  return value.replace(/^[ ]+/, '');
 }

 exports.knownTags = knownTags;
 exports.renderXJSExpressionContainer = renderXJSExpressionContainer;
 exports.renderXJSLiteral = renderXJSLiteral;
 exports.quoteAttrName = quoteAttrName;
 exports.trimLeft = trimLeft;

 },{"jstransform":21,"jstransform/src/utils":22}],37:[function(_dereq_,module,exports){
 /*global exports:true*/
 var es6ArrowFunctions = _dereq_('jstransform/visitors/es6-arrow-function-visitors');
 var es6Classes = _dereq_('jstransform/visitors/es6-class-visitors');
 var es6Destructuring = _dereq_('jstransform/visitors/es6-destructuring-visitors');
 var es6ObjectConciseMethod = _dereq_('jstransform/visitors/es6-object-concise-method-visitors');
 var es6ObjectShortNotation = _dereq_('jstransform/visitors/es6-object-short-notation-visitors');
 var es6RestParameters = _dereq_('jstransform/visitors/es6-rest-param-visitors');
 var es6Templates = _dereq_('jstransform/visitors/es6-template-visitors');
 var es7SpreadProperty = _dereq_('jstransform/visitors/es7-spread-property-visitors');
 var react = _dereq_('./transforms/react');
 var reactDisplayName = _dereq_('./transforms/reactDisplayName');

 /**
 * Map from transformName => orderedListOfVisitors.
 */
 var transformVisitors = {
  'es6-arrow-functions': es6ArrowFunctions.visitorList,
  'es6-classes': es6Classes.visitorList,
  'es6-destructuring': es6Destructuring.visitorList,
  'es6-object-concise-method': es6ObjectConciseMethod.visitorList,
  'es6-object-short-notation': es6ObjectShortNotation.visitorList,
  'es6-rest-params': es6RestParameters.visitorList,
  'es6-templates': es6Templates.visitorList,
  'es7-spread-property': es7SpreadProperty.visitorList,
  'react': react.visitorList.concat(reactDisplayName.visitorList)
 };

 var transformSets = {
  'harmony': [
    'es6-arrow-functions',
    'es6-object-concise-method',
    'es6-object-short-notation',
    'es6-classes',
    'es6-rest-params',
    'es6-templates',
    'es6-destructuring',
    'es7-spread-property'
  ],
  'react': [
    'react'
  ]
 };

 /**
 * Specifies the order in which each transform should run.
 */
 var transformRunOrder = [
  'es6-arrow-functions',
  'es6-object-concise-method',
  'es6-object-short-notation',
  'es6-classes',
  'es6-rest-params',
  'es6-templates',
  'es6-destructuring',
  'es7-spread-property',
  'react'
 ];

 /**
 * Given a list of transform names, return the ordered list of visitors to be
 * passed to the transform() function.
 *
 * @param {array?} excludes
 * @return {array}
 */
 function getAllVisitors(excludes) {
  var ret = [];
  for (var i = 0, il = transformRunOrder.length; i < il; i++) {
    if (!excludes || excludes.indexOf(transformRunOrder[i]) === -1) {
      ret = ret.concat(transformVisitors[transformRunOrder[i]]);
    }
  }
  return ret;
 }

 /**
 * Given a list of visitor set names, return the ordered list of visitors to be
 * passed to jstransform.
 *
 * @param {array}
 * @return {array}
 */
 function getVisitorsBySet(sets) {
  var visitorsToInclude = sets.reduce(function(visitors, set) {
    if (!transformSets.hasOwnProperty(set)) {
      throw new Error('Unknown visitor set: ' + set);
    }
    transformSets[set].forEach(function(visitor) {
      visitors[visitor] = true;
    });
    return visitors;
  }, {});

  var visitorList = [];
  for (var i = 0; i < transformRunOrder.length; i++) {
    if (visitorsToInclude.hasOwnProperty(transformRunOrder[i])) {
      visitorList = visitorList.concat(transformVisitors[transformRunOrder[i]]);
    }
  }

  return visitorList;
 }

 exports.getVisitorsBySet = getVisitorsBySet;
 exports.getAllVisitors = getAllVisitors;
 exports.transformVisitors = transformVisitors;

 },{"./transforms/react":34,"./transforms/reactDisplayName":35,"jstransform/visitors/es6-arrow-function-visitors":23,"jstransform/visitors/es6-class-visitors":24,"jstransform/visitors/es6-destructuring-visitors":25,"jstransform/visitors/es6-object-concise-method-visitors":26,"jstransform/visitors/es6-object-short-notation-visitors":27,"jstransform/visitors/es6-rest-param-visitors":28,"jstransform/visitors/es6-template-visitors":29,"jstransform/visitors/es7-spread-property-visitors":31}]},{},[1])(1)
 });
diff --git a/todo-world_js_libs_react-0.12.1.js b/todo-world_js_libs_react-0.12.1.js
 /**
 * React v0.12.1
 */
 !function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.React=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule React
 */

 "use strict";

 var DOMPropertyOperations = _dereq_("./DOMPropertyOperations");
 var EventPluginUtils = _dereq_("./EventPluginUtils");
 var ReactChildren = _dereq_("./ReactChildren");
 var ReactComponent = _dereq_("./ReactComponent");
 var ReactCompositeComponent = _dereq_("./ReactCompositeComponent");
 var ReactContext = _dereq_("./ReactContext");
 var ReactCurrentOwner = _dereq_("./ReactCurrentOwner");
 var ReactElement = _dereq_("./ReactElement");
 var ReactElementValidator = _dereq_("./ReactElementValidator");
 var ReactDOM = _dereq_("./ReactDOM");
 var ReactDOMComponent = _dereq_("./ReactDOMComponent");
 var ReactDefaultInjection = _dereq_("./ReactDefaultInjection");
 var ReactInstanceHandles = _dereq_("./ReactInstanceHandles");
 var ReactLegacyElement = _dereq_("./ReactLegacyElement");
 var ReactMount = _dereq_("./ReactMount");
 var ReactMultiChild = _dereq_("./ReactMultiChild");
 var ReactPerf = _dereq_("./ReactPerf");
 var ReactPropTypes = _dereq_("./ReactPropTypes");
 var ReactServerRendering = _dereq_("./ReactServerRendering");
 var ReactTextComponent = _dereq_("./ReactTextComponent");

 var assign = _dereq_("./Object.assign");
 var deprecated = _dereq_("./deprecated");
 var onlyChild = _dereq_("./onlyChild");

 ReactDefaultInjection.inject();

 var createElement = ReactElement.createElement;
 var createFactory = ReactElement.createFactory;

 if ("production" !== "development") {
  createElement = ReactElementValidator.createElement;
  createFactory = ReactElementValidator.createFactory;
 }

 // TODO: Drop legacy elements once classes no longer export these factories
 createElement = ReactLegacyElement.wrapCreateElement(
  createElement
 );
 createFactory = ReactLegacyElement.wrapCreateFactory(
  createFactory
 );

 var render = ReactPerf.measure('React', 'render', ReactMount.render);

 var React = {
  Children: {
    map: ReactChildren.map,
    forEach: ReactChildren.forEach,
    count: ReactChildren.count,
    only: onlyChild
  },
  DOM: ReactDOM,
  PropTypes: ReactPropTypes,
  initializeTouchEvents: function(shouldUseTouch) {
    EventPluginUtils.useTouchEvents = shouldUseTouch;
  },
  createClass: ReactCompositeComponent.createClass,
  createElement: createElement,
  createFactory: createFactory,
  constructAndRenderComponent: ReactMount.constructAndRenderComponent,
  constructAndRenderComponentByID: ReactMount.constructAndRenderComponentByID,
  render: render,
  renderToString: ReactServerRendering.renderToString,
  renderToStaticMarkup: ReactServerRendering.renderToStaticMarkup,
  unmountComponentAtNode: ReactMount.unmountComponentAtNode,
  isValidClass: ReactLegacyElement.isValidClass,
  isValidElement: ReactElement.isValidElement,
  withContext: ReactContext.withContext,

  // Hook for JSX spread, don't use this for anything else.
  __spread: assign,

  // Deprecations (remove for 0.13)
  renderComponent: deprecated(
    'React',
    'renderComponent',
    'render',
    this,
    render
  ),
  renderComponentToString: deprecated(
    'React',
    'renderComponentToString',
    'renderToString',
    this,
    ReactServerRendering.renderToString
  ),
  renderComponentToStaticMarkup: deprecated(
    'React',
    'renderComponentToStaticMarkup',
    'renderToStaticMarkup',
    this,
    ReactServerRendering.renderToStaticMarkup
  ),
  isValidComponent: deprecated(
    'React',
    'isValidComponent',
    'isValidElement',
    this,
    ReactElement.isValidElement
  )
 };

 // Inject the runtime into a devtools global hook regardless of browser.
 // Allows for debugging when the hook is injected on the page.
 if (
  typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' &&
  typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.inject === 'function') {
  __REACT_DEVTOOLS_GLOBAL_HOOK__.inject({
    Component: ReactComponent,
    CurrentOwner: ReactCurrentOwner,
    DOMComponent: ReactDOMComponent,
    DOMPropertyOperations: DOMPropertyOperations,
    InstanceHandles: ReactInstanceHandles,
    Mount: ReactMount,
    MultiChild: ReactMultiChild,
    TextComponent: ReactTextComponent
  });
 }

 if ("production" !== "development") {
  var ExecutionEnvironment = _dereq_("./ExecutionEnvironment");
  if (ExecutionEnvironment.canUseDOM && window.top === window.self) {

    // If we're in Chrome, look for the devtools marker and provide a download
    // link if not installed.
    if (navigator.userAgent.indexOf('Chrome') > -1) {
      if (typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ === 'undefined') {
        console.debug(
          'Download the React DevTools for a better development experience: ' +
          'http://fb.me/react-devtools'
        );
      }
    }

    var expectedFeatures = [
      // shims
      Array.isArray,
      Array.prototype.every,
      Array.prototype.forEach,
      Array.prototype.indexOf,
      Array.prototype.map,
      Date.now,
      Function.prototype.bind,
      Object.keys,
      String.prototype.split,
      String.prototype.trim,

      // shams
      Object.create,
      Object.freeze
    ];

    for (var i = 0; i < expectedFeatures.length; i++) {
      if (!expectedFeatures[i]) {
        console.error(
          'One or more ES5 shim/shams expected by React are not available: ' +
          'http://fb.me/react-warning-polyfills'
        );
        break;
      }
    }
  }
 }

 // Version exists only in the open-source version of React, not in Facebook's
 // internal version.
 React.version = '0.12.1';

 module.exports = React;

 },{"./DOMPropertyOperations":12,"./EventPluginUtils":20,"./ExecutionEnvironment":22,"./Object.assign":27,"./ReactChildren":31,"./ReactComponent":32,"./ReactCompositeComponent":34,"./ReactContext":35,"./ReactCurrentOwner":36,"./ReactDOM":37,"./ReactDOMComponent":39,"./ReactDefaultInjection":49,"./ReactElement":52,"./ReactElementValidator":53,"./ReactInstanceHandles":60,"./ReactLegacyElement":61,"./ReactMount":63,"./ReactMultiChild":64,"./ReactPerf":68,"./ReactPropTypes":72,"./ReactServerRendering":76,"./ReactTextComponent":78,"./deprecated":106,"./onlyChild":137}],2:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule AutoFocusMixin
 * @typechecks static-only
 */

 "use strict";

 var focusNode = _dereq_("./focusNode");

 var AutoFocusMixin = {
  componentDidMount: function() {
    if (this.props.autoFocus) {
      focusNode(this.getDOMNode());
    }
  }
 };

 module.exports = AutoFocusMixin;

 },{"./focusNode":111}],3:[function(_dereq_,module,exports){
 /**
 * Copyright 2013 Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule BeforeInputEventPlugin
 * @typechecks static-only
 */

 "use strict";

 var EventConstants = _dereq_("./EventConstants");
 var EventPropagators = _dereq_("./EventPropagators");
 var ExecutionEnvironment = _dereq_("./ExecutionEnvironment");
 var SyntheticInputEvent = _dereq_("./SyntheticInputEvent");

 var keyOf = _dereq_("./keyOf");

 var canUseTextInputEvent = (
  ExecutionEnvironment.canUseDOM &&
  'TextEvent' in window &&
  !('documentMode' in document || isPresto())
 );

 /**
 * Opera <= 12 includes TextEvent in window, but does not fire
 * text input events. Rely on keypress instead.
 */
 function isPresto() {
  var opera = window.opera;
  return (
    typeof opera === 'object' &&
    typeof opera.version === 'function' &&
    parseInt(opera.version(), 10) <= 12
  );
 }

 var SPACEBAR_CODE = 32;
 var SPACEBAR_CHAR = String.fromCharCode(SPACEBAR_CODE);

 var topLevelTypes = EventConstants.topLevelTypes;

 // Events and their corresponding property names.
 var eventTypes = {
  beforeInput: {
    phasedRegistrationNames: {
      bubbled: keyOf({onBeforeInput: null}),
      captured: keyOf({onBeforeInputCapture: null})
    },
    dependencies: [
      topLevelTypes.topCompositionEnd,
      topLevelTypes.topKeyPress,
      topLevelTypes.topTextInput,
      topLevelTypes.topPaste
    ]
  }
 };

 // Track characters inserted via keypress and composition events.
 var fallbackChars = null;

 // Track whether we've ever handled a keypress on the space key.
 var hasSpaceKeypress = false;

 /**
 * Return whether a native keypress event is assumed to be a command.
 * This is required because Firefox fires `keypress` events for key commands
 * (cut, copy, select-all, etc.) even though no character is inserted.
 */
 function isKeypressCommand(nativeEvent) {
  return (
    (nativeEvent.ctrlKey || nativeEvent.altKey || nativeEvent.metaKey) &&
    // ctrlKey && altKey is equivalent to AltGr, and is not a command.
    !(nativeEvent.ctrlKey && nativeEvent.altKey)
  );
 }

 /**
 * Create an `onBeforeInput` event to match
 * http://www.w3.org/TR/2013/WD-DOM-Level-3-Events-20131105/#events-inputevents.
 *
 * This event plugin is based on the native `textInput` event
 * available in Chrome, Safari, Opera, and IE. This event fires after
 * `onKeyPress` and `onCompositionEnd`, but before `onInput`.
 *
 * `beforeInput` is spec'd but not implemented in any browsers, and
 * the `input` event does not provide any useful information about what has
 * actually been added, contrary to the spec. Thus, `textInput` is the best
 * available event to identify the characters that have actually been inserted
 * into the target node.
 */
 var BeforeInputEventPlugin = {

  eventTypes: eventTypes,

  /**
   * @param {string} topLevelType Record from `EventConstants`.
   * @param {DOMEventTarget} topLevelTarget The listening component root node.
   * @param {string} topLevelTargetID ID of `topLevelTarget`.
   * @param {object} nativeEvent Native browser event.
   * @return {*} An accumulation of synthetic events.
   * @see {EventPluginHub.extractEvents}
   */
  extractEvents: function(
      topLevelType,
      topLevelTarget,
      topLevelTargetID,
      nativeEvent) {

    var chars;

    if (canUseTextInputEvent) {
      switch (topLevelType) {
        case topLevelTypes.topKeyPress:
          /**
           * If native `textInput` events are available, our goal is to make
           * use of them. However, there is a special case: the spacebar key.
           * In Webkit, preventing default on a spacebar `textInput` event
           * cancels character insertion, but it *also* causes the browser
           * to fall back to its default spacebar behavior of scrolling the
           * page.
           *
           * Tracking at:
           * https://code.google.com/p/chromium/issues/detail?id=355103
           *
           * To avoid this issue, use the keypress event as if no `textInput`
           * event is available.
           */
          var which = nativeEvent.which;
          if (which !== SPACEBAR_CODE) {
            return;
          }

          hasSpaceKeypress = true;
          chars = SPACEBAR_CHAR;
          break;

        case topLevelTypes.topTextInput:
          // Record the characters to be added to the DOM.
          chars = nativeEvent.data;

          // If it's a spacebar character, assume that we have already handled
          // it at the keypress level and bail immediately. Android Chrome
          // doesn't give us keycodes, so we need to blacklist it.
          if (chars === SPACEBAR_CHAR && hasSpaceKeypress) {
            return;
          }

          // Otherwise, carry on.
          break;

        default:
          // For other native event types, do nothing.
          return;
      }
    } else {
      switch (topLevelType) {
        case topLevelTypes.topPaste:
          // If a paste event occurs after a keypress, throw out the input
          // chars. Paste events should not lead to BeforeInput events.
          fallbackChars = null;
          break;
        case topLevelTypes.topKeyPress:
          /**
           * As of v27, Firefox may fire keypress events even when no character
           * will be inserted. A few possibilities:
           *
           * - `which` is `0`. Arrow keys, Esc key, etc.
           *
           * - `which` is the pressed key code, but no char is available.
           *   Ex: 'AltGr + d` in Polish. There is no modified character for
           *   this key combination and no character is inserted into the
           *   document, but FF fires the keypress for char code `100` anyway.
           *   No `input` event will occur.
           *
           * - `which` is the pressed key code, but a command combination is
           *   being used. Ex: `Cmd+C`. No character is inserted, and no
           *   `input` event will occur.
           */
          if (nativeEvent.which && !isKeypressCommand(nativeEvent)) {
            fallbackChars = String.fromCharCode(nativeEvent.which);
          }
          break;
        case topLevelTypes.topCompositionEnd:
          fallbackChars = nativeEvent.data;
          break;
      }

      // If no changes have occurred to the fallback string, no relevant
      // event has fired and we're done.
      if (fallbackChars === null) {
        return;
      }

      chars = fallbackChars;
    }

    // If no characters are being inserted, no BeforeInput event should
    // be fired.
    if (!chars) {
      return;
    }

    var event = SyntheticInputEvent.getPooled(
      eventTypes.beforeInput,
      topLevelTargetID,
      nativeEvent
    );

    event.data = chars;
    fallbackChars = null;
    EventPropagators.accumulateTwoPhaseDispatches(event);
    return event;
  }
 };

 module.exports = BeforeInputEventPlugin;

 },{"./EventConstants":16,"./EventPropagators":21,"./ExecutionEnvironment":22,"./SyntheticInputEvent":89,"./keyOf":133}],4:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule CSSProperty
 */

 "use strict";

 /**
 * CSS properties which accept numbers but are not in units of "px".
 */
 var isUnitlessNumber = {
  columnCount: true,
  fillOpacity: true,
  flex: true,
  flexGrow: true,
  flexShrink: true,
  fontWeight: true,
  lineClamp: true,
  lineHeight: true,
  opacity: true,
  order: true,
  orphans: true,
  widows: true,
  zIndex: true,
  zoom: true
 };

 /**
 * @param {string} prefix vendor-specific prefix, eg: Webkit
 * @param {string} key style name, eg: transitionDuration
 * @return {string} style name prefixed with `prefix`, properly camelCased, eg:
 * WebkitTransitionDuration
 */
 function prefixKey(prefix, key) {
  return prefix + key.charAt(0).toUpperCase() + key.substring(1);
 }

 /**
 * Support style names that may come passed in prefixed by adding permutations
 * of vendor prefixes.
 */
 var prefixes = ['Webkit', 'ms', 'Moz', 'O'];

 // Using Object.keys here, or else the vanilla for-in loop makes IE8 go into an
 // infinite loop, because it iterates over the newly added props too.
 Object.keys(isUnitlessNumber).forEach(function(prop) {
  prefixes.forEach(function(prefix) {
    isUnitlessNumber[prefixKey(prefix, prop)] = isUnitlessNumber[prop];
  });
 });

 /**
 * Most style properties can be unset by doing .style[prop] = '' but IE8
 * doesn't like doing that with shorthand properties so for the properties that
 * IE8 breaks on, which are listed here, we instead unset each of the
 * individual properties. See http://bugs.jquery.com/ticket/12385.
 * The 4-value 'clock' properties like margin, padding, border-width seem to
 * behave without any problems. Curiously, list-style works too without any
 * special prodding.
 */
 var shorthandPropertyExpansions = {
  background: {
    backgroundImage: true,
    backgroundPosition: true,
    backgroundRepeat: true,
    backgroundColor: true
  },
  border: {
    borderWidth: true,
    borderStyle: true,
    borderColor: true
  },
  borderBottom: {
    borderBottomWidth: true,
    borderBottomStyle: true,
    borderBottomColor: true
  },
  borderLeft: {
    borderLeftWidth: true,
    borderLeftStyle: true,
    borderLeftColor: true
  },
  borderRight: {
    borderRightWidth: true,
    borderRightStyle: true,
    borderRightColor: true
  },
  borderTop: {
    borderTopWidth: true,
    borderTopStyle: true,
    borderTopColor: true
  },
  font: {
    fontStyle: true,
    fontVariant: true,
    fontWeight: true,
    fontSize: true,
    lineHeight: true,
    fontFamily: true
  }
 };

 var CSSProperty = {
  isUnitlessNumber: isUnitlessNumber,
  shorthandPropertyExpansions: shorthandPropertyExpansions
 };

 module.exports = CSSProperty;

 },{}],5:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule CSSPropertyOperations
 * @typechecks static-only
 */

 "use strict";

 var CSSProperty = _dereq_("./CSSProperty");
 var ExecutionEnvironment = _dereq_("./ExecutionEnvironment");

 var camelizeStyleName = _dereq_("./camelizeStyleName");
 var dangerousStyleValue = _dereq_("./dangerousStyleValue");
 var hyphenateStyleName = _dereq_("./hyphenateStyleName");
 var memoizeStringOnly = _dereq_("./memoizeStringOnly");
 var warning = _dereq_("./warning");

 var processStyleName = memoizeStringOnly(function(styleName) {
  return hyphenateStyleName(styleName);
 });

 var styleFloatAccessor = 'cssFloat';
 if (ExecutionEnvironment.canUseDOM) {
  // IE8 only supports accessing cssFloat (standard) as styleFloat
  if (document.documentElement.style.cssFloat === undefined) {
    styleFloatAccessor = 'styleFloat';
  }
 }

 if ("production" !== "development") {
  var warnedStyleNames = {};

  var warnHyphenatedStyleName = function(name) {
    if (warnedStyleNames.hasOwnProperty(name) && warnedStyleNames[name]) {
      return;
    }

    warnedStyleNames[name] = true;
    ("production" !== "development" ? warning(
      false,
      'Unsupported style property ' + name + '. Did you mean ' +
      camelizeStyleName(name) + '?'
    ) : null);
  };
 }

 /**
 * Operations for dealing with CSS properties.
 */
 var CSSPropertyOperations = {

  /**
   * Serializes a mapping of style properties for use as inline styles:
   *
   *   > createMarkupForStyles({width: '200px', height: 0})
   *   "width:200px;height:0;"
   *
   * Undefined values are ignored so that declarative programming is easier.
   * The result should be HTML-escaped before insertion into the DOM.
   *
   * @param {object} styles
   * @return {?string}
   */
  createMarkupForStyles: function(styles) {
    var serialized = '';
    for (var styleName in styles) {
      if (!styles.hasOwnProperty(styleName)) {
        continue;
      }
      if ("production" !== "development") {
        if (styleName.indexOf('-') > -1) {
          warnHyphenatedStyleName(styleName);
        }
      }
      var styleValue = styles[styleName];
      if (styleValue != null) {
        serialized += processStyleName(styleName) + ':';
        serialized += dangerousStyleValue(styleName, styleValue) + ';';
      }
    }
    return serialized || null;
  },

  /**
   * Sets the value for multiple styles on a node.  If a value is specified as
   * '' (empty string), the corresponding style property will be unset.
   *
   * @param {DOMElement} node
   * @param {object} styles
   */
  setValueForStyles: function(node, styles) {
    var style = node.style;
    for (var styleName in styles) {
      if (!styles.hasOwnProperty(styleName)) {
        continue;
      }
      if ("production" !== "development") {
        if (styleName.indexOf('-') > -1) {
          warnHyphenatedStyleName(styleName);
        }
      }
      var styleValue = dangerousStyleValue(styleName, styles[styleName]);
      if (styleName === 'float') {
        styleName = styleFloatAccessor;
      }
      if (styleValue) {
        style[styleName] = styleValue;
      } else {
        var expansion = CSSProperty.shorthandPropertyExpansions[styleName];
        if (expansion) {
          // Shorthand property that IE8 won't like unsetting, so unset each
          // component to placate it
          for (var individualStyleName in expansion) {
            style[individualStyleName] = '';
          }
        } else {
          style[styleName] = '';
        }
      }
    }
  }

 };

 module.exports = CSSPropertyOperations;

 },{"./CSSProperty":4,"./ExecutionEnvironment":22,"./camelizeStyleName":100,"./dangerousStyleValue":105,"./hyphenateStyleName":124,"./memoizeStringOnly":135,"./warning":145}],6:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule CallbackQueue
 */

 "use strict";

 var PooledClass = _dereq_("./PooledClass");

 var assign = _dereq_("./Object.assign");
 var invariant = _dereq_("./invariant");

 /**
 * A specialized pseudo-event module to help keep track of components waiting to
 * be notified when their DOM representations are available for use.
 *
 * This implements `PooledClass`, so you should never need to instantiate this.
 * Instead, use `CallbackQueue.getPooled()`.
 *
 * @class ReactMountReady
 * @implements PooledClass
 * @internal
 */
 function CallbackQueue() {
  this._callbacks = null;
  this._contexts = null;
 }

 assign(CallbackQueue.prototype, {

  /**
   * Enqueues a callback to be invoked when `notifyAll` is invoked.
   *
   * @param {function} callback Invoked when `notifyAll` is invoked.
   * @param {?object} context Context to call `callback` with.
   * @internal
   */
  enqueue: function(callback, context) {
    this._callbacks = this._callbacks || [];
    this._contexts = this._contexts || [];
    this._callbacks.push(callback);
    this._contexts.push(context);
  },

  /**
   * Invokes all enqueued callbacks and clears the queue. This is invoked after
   * the DOM representation of a component has been created or updated.
   *
   * @internal
   */
  notifyAll: function() {
    var callbacks = this._callbacks;
    var contexts = this._contexts;
    if (callbacks) {
      ("production" !== "development" ? invariant(
        callbacks.length === contexts.length,
        "Mismatched list of contexts in callback queue"
      ) : invariant(callbacks.length === contexts.length));
      this._callbacks = null;
      this._contexts = null;
      for (var i = 0, l = callbacks.length; i < l; i++) {
        callbacks[i].call(contexts[i]);
      }
      callbacks.length = 0;
      contexts.length = 0;
    }
  },

  /**
   * Resets the internal queue.
   *
   * @internal
   */
  reset: function() {
    this._callbacks = null;
    this._contexts = null;
  },

  /**
   * `PooledClass` looks for this.
   */
  destructor: function() {
    this.reset();
  }

 });

 PooledClass.addPoolingTo(CallbackQueue);

 module.exports = CallbackQueue;

 },{"./Object.assign":27,"./PooledClass":28,"./invariant":126}],7:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ChangeEventPlugin
 */

 "use strict";

 var EventConstants = _dereq_("./EventConstants");
 var EventPluginHub = _dereq_("./EventPluginHub");
 var EventPropagators = _dereq_("./EventPropagators");
 var ExecutionEnvironment = _dereq_("./ExecutionEnvironment");
 var ReactUpdates = _dereq_("./ReactUpdates");
 var SyntheticEvent = _dereq_("./SyntheticEvent");

 var isEventSupported = _dereq_("./isEventSupported");
 var isTextInputElement = _dereq_("./isTextInputElement");
 var keyOf = _dereq_("./keyOf");

 var topLevelTypes = EventConstants.topLevelTypes;

 var eventTypes = {
  change: {
    phasedRegistrationNames: {
      bubbled: keyOf({onChange: null}),
      captured: keyOf({onChangeCapture: null})
    },
    dependencies: [
      topLevelTypes.topBlur,
      topLevelTypes.topChange,
      topLevelTypes.topClick,
      topLevelTypes.topFocus,
      topLevelTypes.topInput,
      topLevelTypes.topKeyDown,
      topLevelTypes.topKeyUp,
      topLevelTypes.topSelectionChange
    ]
  }
 };

 /**
 * For IE shims
 */
 var activeElement = null;
 var activeElementID = null;
 var activeElementValue = null;
 var activeElementValueProp = null;

 /**
 * SECTION: handle `change` event
 */
 function shouldUseChangeEvent(elem) {
  return (
    elem.nodeName === 'SELECT' ||
    (elem.nodeName === 'INPUT' && elem.type === 'file')
  );
 }

 var doesChangeEventBubble = false;
 if (ExecutionEnvironment.canUseDOM) {
  // See `handleChange` comment below
  doesChangeEventBubble = isEventSupported('change') && (
    !('documentMode' in document) || document.documentMode > 8
  );
 }

 function manualDispatchChangeEvent(nativeEvent) {
  var event = SyntheticEvent.getPooled(
    eventTypes.change,
    activeElementID,
    nativeEvent
  );
  EventPropagators.accumulateTwoPhaseDispatches(event);

  // If change and propertychange bubbled, we'd just bind to it like all the
  // other events and have it go through ReactBrowserEventEmitter. Since it
  // doesn't, we manually listen for the events and so we have to enqueue and
  // process the abstract event manually.
  //
  // Batching is necessary here in order to ensure that all event handlers run
  // before the next rerender (including event handlers attached to ancestor
  // elements instead of directly on the input). Without this, controlled
  // components don't work properly in conjunction with event bubbling because
  // the component is rerendered and the value reverted before all the event
  // handlers can run. See https://github.com/facebook/react/issues/708.
  ReactUpdates.batchedUpdates(runEventInBatch, event);
 }

 function runEventInBatch(event) {
  EventPluginHub.enqueueEvents(event);
  EventPluginHub.processEventQueue();
 }

 function startWatchingForChangeEventIE8(target, targetID) {
  activeElement = target;
  activeElementID = targetID;
  activeElement.attachEvent('onchange', manualDispatchChangeEvent);
 }

 function stopWatchingForChangeEventIE8() {
  if (!activeElement) {
    return;
  }
  activeElement.detachEvent('onchange', manualDispatchChangeEvent);
  activeElement = null;
  activeElementID = null;
 }

 function getTargetIDForChangeEvent(
    topLevelType,
    topLevelTarget,
    topLevelTargetID) {
  if (topLevelType === topLevelTypes.topChange) {
    return topLevelTargetID;
  }
 }
 function handleEventsForChangeEventIE8(
    topLevelType,
    topLevelTarget,
    topLevelTargetID) {
  if (topLevelType === topLevelTypes.topFocus) {
    // stopWatching() should be a noop here but we call it just in case we
    // missed a blur event somehow.
    stopWatchingForChangeEventIE8();
    startWatchingForChangeEventIE8(topLevelTarget, topLevelTargetID);
  } else if (topLevelType === topLevelTypes.topBlur) {
    stopWatchingForChangeEventIE8();
  }
 }


 /**
 * SECTION: handle `input` event
 */
 var isInputEventSupported = false;
 if (ExecutionEnvironment.canUseDOM) {
  // IE9 claims to support the input event but fails to trigger it when
  // deleting text, so we ignore its input events
  isInputEventSupported = isEventSupported('input') && (
    !('documentMode' in document) || document.documentMode > 9
  );
 }

 /**
 * (For old IE.) Replacement getter/setter for the `value` property that gets
 * set on the active element.
 */
 var newValueProp =  {
  get: function() {
    return activeElementValueProp.get.call(this);
  },
  set: function(val) {
    // Cast to a string so we can do equality checks.
    activeElementValue = '' + val;
    activeElementValueProp.set.call(this, val);
  }
 };

 /**
 * (For old IE.) Starts tracking propertychange events on the passed-in element
 * and override the value property so that we can distinguish user events from
 * value changes in JS.
 */
 function startWatchingForValueChange(target, targetID) {
  activeElement = target;
  activeElementID = targetID;
  activeElementValue = target.value;
  activeElementValueProp = Object.getOwnPropertyDescriptor(
    target.constructor.prototype,
    'value'
  );

  Object.defineProperty(activeElement, 'value', newValueProp);
  activeElement.attachEvent('onpropertychange', handlePropertyChange);
 }

 /**
 * (For old IE.) Removes the event listeners from the currently-tracked element,
 * if any exists.
 */
 function stopWatchingForValueChange() {
  if (!activeElement) {
    return;
  }

  // delete restores the original property definition
  delete activeElement.value;
  activeElement.detachEvent('onpropertychange', handlePropertyChange);

  activeElement = null;
  activeElementID = null;
  activeElementValue = null;
  activeElementValueProp = null;
 }

 /**
 * (For old IE.) Handles a propertychange event, sending a `change` event if
 * the value of the active element has changed.
 */
 function handlePropertyChange(nativeEvent) {
  if (nativeEvent.propertyName !== 'value') {
    return;
  }
  var value = nativeEvent.srcElement.value;
  if (value === activeElementValue) {
    return;
  }
  activeElementValue = value;

  manualDispatchChangeEvent(nativeEvent);
 }

 /**
 * If a `change` event should be fired, returns the target's ID.
 */
 function getTargetIDForInputEvent(
    topLevelType,
    topLevelTarget,
    topLevelTargetID) {
  if (topLevelType === topLevelTypes.topInput) {
    // In modern browsers (i.e., not IE8 or IE9), the input event is exactly
    // what we want so fall through here and trigger an abstract event
    return topLevelTargetID;
  }
 }

 // For IE8 and IE9.
 function handleEventsForInputEventIE(
    topLevelType,
    topLevelTarget,
    topLevelTargetID) {
  if (topLevelType === topLevelTypes.topFocus) {
    // In IE8, we can capture almost all .value changes by adding a
    // propertychange handler and looking for events with propertyName
    // equal to 'value'
    // In IE9, propertychange fires for most input events but is buggy and
    // doesn't fire when text is deleted, but conveniently, selectionchange
    // appears to fire in all of the remaining cases so we catch those and
    // forward the event if the value has changed
    // In either case, we don't want to call the event handler if the value
    // is changed from JS so we redefine a setter for `.value` that updates
    // our activeElementValue variable, allowing us to ignore those changes
    //
    // stopWatching() should be a noop here but we call it just in case we
    // missed a blur event somehow.
    stopWatchingForValueChange();
    startWatchingForValueChange(topLevelTarget, topLevelTargetID);
  } else if (topLevelType === topLevelTypes.topBlur) {
    stopWatchingForValueChange();
  }
 }

 // For IE8 and IE9.
 function getTargetIDForInputEventIE(
    topLevelType,
    topLevelTarget,
    topLevelTargetID) {
  if (topLevelType === topLevelTypes.topSelectionChange ||
      topLevelType === topLevelTypes.topKeyUp ||
      topLevelType === topLevelTypes.topKeyDown) {
    // On the selectionchange event, the target is just document which isn't
    // helpful for us so just check activeElement instead.
    //
    // 99% of the time, keydown and keyup aren't necessary. IE8 fails to fire
    // propertychange on the first input event after setting `value` from a
    // script and fires only keydown, keypress, keyup. Catching keyup usually
    // gets it and catching keydown lets us fire an event for the first
    // keystroke if user does a key repeat (it'll be a little delayed: right
    // before the second keystroke). Other input methods (e.g., paste) seem to
    // fire selectionchange normally.
    if (activeElement && activeElement.value !== activeElementValue) {
      activeElementValue = activeElement.value;
      return activeElementID;
    }
  }
 }


 /**
 * SECTION: handle `click` event
 */
 function shouldUseClickEvent(elem) {
  // Use the `click` event to detect changes to checkbox and radio inputs.
  // This approach works across all browsers, whereas `change` does not fire
  // until `blur` in IE8.
  return (
    elem.nodeName === 'INPUT' &&
    (elem.type === 'checkbox' || elem.type === 'radio')
  );
 }

 function getTargetIDForClickEvent(
    topLevelType,
    topLevelTarget,
    topLevelTargetID) {
  if (topLevelType === topLevelTypes.topClick) {
    return topLevelTargetID;
  }
 }

 /**
 * This plugin creates an `onChange` event that normalizes change events
 * across form elements. This event fires at a time when it's possible to
 * change the element's value without seeing a flicker.
 *
 * Supported elements are:
 * - input (see `isTextInputElement`)
 * - textarea
 * - select
 */
 var ChangeEventPlugin = {

  eventTypes: eventTypes,

  /**
   * @param {string} topLevelType Record from `EventConstants`.
   * @param {DOMEventTarget} topLevelTarget The listening component root node.
   * @param {string} topLevelTargetID ID of `topLevelTarget`.
   * @param {object} nativeEvent Native browser event.
   * @return {*} An accumulation of synthetic events.
   * @see {EventPluginHub.extractEvents}
   */
  extractEvents: function(
      topLevelType,
      topLevelTarget,
      topLevelTargetID,
      nativeEvent) {

    var getTargetIDFunc, handleEventFunc;
    if (shouldUseChangeEvent(topLevelTarget)) {
      if (doesChangeEventBubble) {
        getTargetIDFunc = getTargetIDForChangeEvent;
      } else {
        handleEventFunc = handleEventsForChangeEventIE8;
      }
    } else if (isTextInputElement(topLevelTarget)) {
      if (isInputEventSupported) {
        getTargetIDFunc = getTargetIDForInputEvent;
      } else {
        getTargetIDFunc = getTargetIDForInputEventIE;
        handleEventFunc = handleEventsForInputEventIE;
      }
    } else if (shouldUseClickEvent(topLevelTarget)) {
      getTargetIDFunc = getTargetIDForClickEvent;
    }

    if (getTargetIDFunc) {
      var targetID = getTargetIDFunc(
        topLevelType,
        topLevelTarget,
        topLevelTargetID
      );
      if (targetID) {
        var event = SyntheticEvent.getPooled(
          eventTypes.change,
          targetID,
          nativeEvent
        );
        EventPropagators.accumulateTwoPhaseDispatches(event);
        return event;
      }
    }

    if (handleEventFunc) {
      handleEventFunc(
        topLevelType,
        topLevelTarget,
        topLevelTargetID
      );
    }
  }

 };

 module.exports = ChangeEventPlugin;

 },{"./EventConstants":16,"./EventPluginHub":18,"./EventPropagators":21,"./ExecutionEnvironment":22,"./ReactUpdates":79,"./SyntheticEvent":87,"./isEventSupported":127,"./isTextInputElement":129,"./keyOf":133}],8:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ClientReactRootIndex
 * @typechecks
 */

 "use strict";

 var nextReactRootIndex = 0;

 var ClientReactRootIndex = {
  createReactRootIndex: function() {
    return nextReactRootIndex++;
  }
 };

 module.exports = ClientReactRootIndex;

 },{}],9:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule CompositionEventPlugin
 * @typechecks static-only
 */

 "use strict";

 var EventConstants = _dereq_("./EventConstants");
 var EventPropagators = _dereq_("./EventPropagators");
 var ExecutionEnvironment = _dereq_("./ExecutionEnvironment");
 var ReactInputSelection = _dereq_("./ReactInputSelection");
 var SyntheticCompositionEvent = _dereq_("./SyntheticCompositionEvent");

 var getTextContentAccessor = _dereq_("./getTextContentAccessor");
 var keyOf = _dereq_("./keyOf");

 var END_KEYCODES = [9, 13, 27, 32]; // Tab, Return, Esc, Space
 var START_KEYCODE = 229;

 var useCompositionEvent = (
  ExecutionEnvironment.canUseDOM &&
  'CompositionEvent' in window
 );

 // In IE9+, we have access to composition events, but the data supplied
 // by the native compositionend event may be incorrect. In Korean, for example,
 // the compositionend event contains only one character regardless of
 // how many characters have been composed since compositionstart.
 // We therefore use the fallback data while still using the native
 // events as triggers.
 var useFallbackData = (
  !useCompositionEvent ||
  (
    'documentMode' in document &&
    document.documentMode > 8 &&
    document.documentMode <= 11
  )
 );

 var topLevelTypes = EventConstants.topLevelTypes;
 var currentComposition = null;

 // Events and their corresponding property names.
 var eventTypes = {
  compositionEnd: {
    phasedRegistrationNames: {
      bubbled: keyOf({onCompositionEnd: null}),
      captured: keyOf({onCompositionEndCapture: null})
    },
    dependencies: [
      topLevelTypes.topBlur,
      topLevelTypes.topCompositionEnd,
      topLevelTypes.topKeyDown,
      topLevelTypes.topKeyPress,
      topLevelTypes.topKeyUp,
      topLevelTypes.topMouseDown
    ]
  },
  compositionStart: {
    phasedRegistrationNames: {
      bubbled: keyOf({onCompositionStart: null}),
      captured: keyOf({onCompositionStartCapture: null})
    },
    dependencies: [
      topLevelTypes.topBlur,
      topLevelTypes.topCompositionStart,
      topLevelTypes.topKeyDown,
      topLevelTypes.topKeyPress,
      topLevelTypes.topKeyUp,
      topLevelTypes.topMouseDown
    ]
  },
  compositionUpdate: {
    phasedRegistrationNames: {
      bubbled: keyOf({onCompositionUpdate: null}),
      captured: keyOf({onCompositionUpdateCapture: null})
    },
    dependencies: [
      topLevelTypes.topBlur,
      topLevelTypes.topCompositionUpdate,
      topLevelTypes.topKeyDown,
      topLevelTypes.topKeyPress,
      topLevelTypes.topKeyUp,
      topLevelTypes.topMouseDown
    ]
  }
 };

 /**
 * Translate native top level events into event types.
 *
 * @param {string} topLevelType
 * @return {object}
 */
 function getCompositionEventType(topLevelType) {
  switch (topLevelType) {
    case topLevelTypes.topCompositionStart:
      return eventTypes.compositionStart;
    case topLevelTypes.topCompositionEnd:
      return eventTypes.compositionEnd;
    case topLevelTypes.topCompositionUpdate:
      return eventTypes.compositionUpdate;
  }
 }

 /**
 * Does our fallback best-guess model think this event signifies that
 * composition has begun?
 *
 * @param {string} topLevelType
 * @param {object} nativeEvent
 * @return {boolean}
 */
 function isFallbackStart(topLevelType, nativeEvent) {
  return (
    topLevelType === topLevelTypes.topKeyDown &&
    nativeEvent.keyCode === START_KEYCODE
  );
 }

 /**
 * Does our fallback mode think that this event is the end of composition?
 *
 * @param {string} topLevelType
 * @param {object} nativeEvent
 * @return {boolean}
 */
 function isFallbackEnd(topLevelType, nativeEvent) {
  switch (topLevelType) {
    case topLevelTypes.topKeyUp:
      // Command keys insert or clear IME input.
      return (END_KEYCODES.indexOf(nativeEvent.keyCode) !== -1);
    case topLevelTypes.topKeyDown:
      // Expect IME keyCode on each keydown. If we get any other
      // code we must have exited earlier.
      return (nativeEvent.keyCode !== START_KEYCODE);
    case topLevelTypes.topKeyPress:
    case topLevelTypes.topMouseDown:
    case topLevelTypes.topBlur:
      // Events are not possible without cancelling IME.
      return true;
    default:
      return false;
  }
 }

 /**
 * Helper class stores information about selection and document state
 * so we can figure out what changed at a later date.
 *
 * @param {DOMEventTarget} root
 */
 function FallbackCompositionState(root) {
  this.root = root;
  this.startSelection = ReactInputSelection.getSelection(root);
  this.startValue = this.getText();
 }

 /**
 * Get current text of input.
 *
 * @return {string}
 */
 FallbackCompositionState.prototype.getText = function() {
  return this.root.value || this.root[getTextContentAccessor()];
 };

 /**
 * Text that has changed since the start of composition.
 *
 * @return {string}
 */
 FallbackCompositionState.prototype.getData = function() {
  var endValue = this.getText();
  var prefixLength = this.startSelection.start;
  var suffixLength = this.startValue.length - this.startSelection.end;

  return endValue.substr(
    prefixLength,
    endValue.length - suffixLength - prefixLength
  );
 };

 /**
 * This plugin creates `onCompositionStart`, `onCompositionUpdate` and
 * `onCompositionEnd` events on inputs, textareas and contentEditable
 * nodes.
 */
 var CompositionEventPlugin = {

  eventTypes: eventTypes,

  /**
   * @param {string} topLevelType Record from `EventConstants`.
   * @param {DOMEventTarget} topLevelTarget The listening component root node.
   * @param {string} topLevelTargetID ID of `topLevelTarget`.
   * @param {object} nativeEvent Native browser event.
   * @return {*} An accumulation of synthetic events.
   * @see {EventPluginHub.extractEvents}
   */
  extractEvents: function(
      topLevelType,
      topLevelTarget,
      topLevelTargetID,
      nativeEvent) {

    var eventType;
    var data;

    if (useCompositionEvent) {
      eventType = getCompositionEventType(topLevelType);
    } else if (!currentComposition) {
      if (isFallbackStart(topLevelType, nativeEvent)) {
        eventType = eventTypes.compositionStart;
      }
    } else if (isFallbackEnd(topLevelType, nativeEvent)) {
      eventType = eventTypes.compositionEnd;
    }

    if (useFallbackData) {
      // The current composition is stored statically and must not be
      // overwritten while composition continues.
      if (!currentComposition && eventType === eventTypes.compositionStart) {
        currentComposition = new FallbackCompositionState(topLevelTarget);
      } else if (eventType === eventTypes.compositionEnd) {
        if (currentComposition) {
          data = currentComposition.getData();
          currentComposition = null;
        }
      }
    }

    if (eventType) {
      var event = SyntheticCompositionEvent.getPooled(
        eventType,
        topLevelTargetID,
        nativeEvent
      );
      if (data) {
        // Inject data generated from fallback path into the synthetic event.
        // This matches the property of native CompositionEventInterface.
        event.data = data;
      }
      EventPropagators.accumulateTwoPhaseDispatches(event);
      return event;
    }
  }
 };

 module.exports = CompositionEventPlugin;

 },{"./EventConstants":16,"./EventPropagators":21,"./ExecutionEnvironment":22,"./ReactInputSelection":59,"./SyntheticCompositionEvent":85,"./getTextContentAccessor":121,"./keyOf":133}],10:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule DOMChildrenOperations
 * @typechecks static-only
 */

 "use strict";

 var Danger = _dereq_("./Danger");
 var ReactMultiChildUpdateTypes = _dereq_("./ReactMultiChildUpdateTypes");

 var getTextContentAccessor = _dereq_("./getTextContentAccessor");
 var invariant = _dereq_("./invariant");

 /**
 * The DOM property to use when setting text content.
 *
 * @type {string}
 * @private
 */
 var textContentAccessor = getTextContentAccessor();

 /**
 * Inserts `childNode` as a child of `parentNode` at the `index`.
 *
 * @param {DOMElement} parentNode Parent node in which to insert.
 * @param {DOMElement} childNode Child node to insert.
 * @param {number} index Index at which to insert the child.
 * @internal
 */
 function insertChildAt(parentNode, childNode, index) {
  // By exploiting arrays returning `undefined` for an undefined index, we can
  // rely exclusively on `insertBefore(node, null)` instead of also using
  // `appendChild(node)`. However, using `undefined` is not allowed by all
  // browsers so we must replace it with `null`.
  parentNode.insertBefore(
    childNode,
    parentNode.childNodes[index] || null
  );
 }

 var updateTextContent;
 if (textContentAccessor === 'textContent') {
  /**
   * Sets the text content of `node` to `text`.
   *
   * @param {DOMElement} node Node to change
   * @param {string} text New text content
   */
  updateTextContent = function(node, text) {
    node.textContent = text;
  };
 } else {
  /**
   * Sets the text content of `node` to `text`.
   *
   * @param {DOMElement} node Node to change
   * @param {string} text New text content
   */
  updateTextContent = function(node, text) {
    // In order to preserve newlines correctly, we can't use .innerText to set
    // the contents (see #1080), so we empty the element then append a text node
    while (node.firstChild) {
      node.removeChild(node.firstChild);
    }
    if (text) {
      var doc = node.ownerDocument || document;
      node.appendChild(doc.createTextNode(text));
    }
  };
 }

 /**
 * Operations for updating with DOM children.
 */
 var DOMChildrenOperations = {

  dangerouslyReplaceNodeWithMarkup: Danger.dangerouslyReplaceNodeWithMarkup,

  updateTextContent: updateTextContent,

  /**
   * Updates a component's children by processing a series of updates. The
   * update configurations are each expected to have a `parentNode` property.
   *
   * @param {array<object>} updates List of update configurations.
   * @param {array<string>} markupList List of markup strings.
   * @internal
   */
  processUpdates: function(updates, markupList) {
    var update;
    // Mapping from parent IDs to initial child orderings.
    var initialChildren = null;
    // List of children that will be moved or removed.
    var updatedChildren = null;

    for (var i = 0; update = updates[i]; i++) {
      if (update.type === ReactMultiChildUpdateTypes.MOVE_EXISTING ||
          update.type === ReactMultiChildUpdateTypes.REMOVE_NODE) {
        var updatedIndex = update.fromIndex;
        var updatedChild = update.parentNode.childNodes[updatedIndex];
        var parentID = update.parentID;

        ("production" !== "development" ? invariant(
          updatedChild,
          'processUpdates(): Unable to find child %s of element. This ' +
          'probably means the DOM was unexpectedly mutated (e.g., by the ' +
          'browser), usually due to forgetting a <tbody> when using tables, ' +
          'nesting tags like <form>, <p>, or <a>, or using non-SVG elements '+
          'in an <svg> parent. Try inspecting the child nodes of the element ' +
          'with React ID `%s`.',
          updatedIndex,
          parentID
        ) : invariant(updatedChild));

        initialChildren = initialChildren || {};
        initialChildren[parentID] = initialChildren[parentID] || [];
        initialChildren[parentID][updatedIndex] = updatedChild;

        updatedChildren = updatedChildren || [];
        updatedChildren.push(updatedChild);
      }
    }

    var renderedMarkup = Danger.dangerouslyRenderMarkup(markupList);

    // Remove updated children first so that `toIndex` is consistent.
    if (updatedChildren) {
      for (var j = 0; j < updatedChildren.length; j++) {
        updatedChildren[j].parentNode.removeChild(updatedChildren[j]);
      }
    }

    for (var k = 0; update = updates[k]; k++) {
      switch (update.type) {
        case ReactMultiChildUpdateTypes.INSERT_MARKUP:
          insertChildAt(
            update.parentNode,
            renderedMarkup[update.markupIndex],
            update.toIndex
          );
          break;
        case ReactMultiChildUpdateTypes.MOVE_EXISTING:
          insertChildAt(
            update.parentNode,
            initialChildren[update.parentID][update.fromIndex],
            update.toIndex
          );
          break;
        case ReactMultiChildUpdateTypes.TEXT_CONTENT:
          updateTextContent(
            update.parentNode,
            update.textContent
          );
          break;
        case ReactMultiChildUpdateTypes.REMOVE_NODE:
          // Already removed by the for-loop above.
          break;
      }
    }
  }

 };

 module.exports = DOMChildrenOperations;

 },{"./Danger":13,"./ReactMultiChildUpdateTypes":65,"./getTextContentAccessor":121,"./invariant":126}],11:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule DOMProperty
 * @typechecks static-only
 */

 /*jslint bitwise: true */

 "use strict";

 var invariant = _dereq_("./invariant");

 function checkMask(value, bitmask) {
  return (value & bitmask) === bitmask;
 }

 var DOMPropertyInjection = {
  /**
   * Mapping from normalized, camelcased property names to a configuration that
   * specifies how the associated DOM property should be accessed or rendered.
   */
  MUST_USE_ATTRIBUTE: 0x1,
  MUST_USE_PROPERTY: 0x2,
  HAS_SIDE_EFFECTS: 0x4,
  HAS_BOOLEAN_VALUE: 0x8,
  HAS_NUMERIC_VALUE: 0x10,
  HAS_POSITIVE_NUMERIC_VALUE: 0x20 | 0x10,
  HAS_OVERLOADED_BOOLEAN_VALUE: 0x40,

  /**
   * Inject some specialized knowledge about the DOM. This takes a config object
   * with the following properties:
   *
   * isCustomAttribute: function that given an attribute name will return true
   * if it can be inserted into the DOM verbatim. Useful for data-* or aria-*
   * attributes where it's impossible to enumerate all of the possible
   * attribute names,
   *
   * Properties: object mapping DOM property name to one of the
   * DOMPropertyInjection constants or null. If your attribute isn't in here,
   * it won't get written to the DOM.
   *
   * DOMAttributeNames: object mapping React attribute name to the DOM
   * attribute name. Attribute names not specified use the **lowercase**
   * normalized name.
   *
   * DOMPropertyNames: similar to DOMAttributeNames but for DOM properties.
   * Property names not specified use the normalized name.
   *
   * DOMMutationMethods: Properties that require special mutation methods. If
   * `value` is undefined, the mutation method should unset the property.
   *
   * @param {object} domPropertyConfig the config as described above.
   */
  injectDOMPropertyConfig: function(domPropertyConfig) {
    var Properties = domPropertyConfig.Properties || {};
    var DOMAttributeNames = domPropertyConfig.DOMAttributeNames || {};
    var DOMPropertyNames = domPropertyConfig.DOMPropertyNames || {};
    var DOMMutationMethods = domPropertyConfig.DOMMutationMethods || {};

    if (domPropertyConfig.isCustomAttribute) {
      DOMProperty._isCustomAttributeFunctions.push(
        domPropertyConfig.isCustomAttribute
      );
    }

    for (var propName in Properties) {
      ("production" !== "development" ? invariant(
        !DOMProperty.isStandardName.hasOwnProperty(propName),
        'injectDOMPropertyConfig(...): You\'re trying to inject DOM property ' +
        '\'%s\' which has already been injected. You may be accidentally ' +
        'injecting the same DOM property config twice, or you may be ' +
        'injecting two configs that have conflicting property names.',
        propName
      ) : invariant(!DOMProperty.isStandardName.hasOwnProperty(propName)));

      DOMProperty.isStandardName[propName] = true;

      var lowerCased = propName.toLowerCase();
      DOMProperty.getPossibleStandardName[lowerCased] = propName;

      if (DOMAttributeNames.hasOwnProperty(propName)) {
        var attributeName = DOMAttributeNames[propName];
        DOMProperty.getPossibleStandardName[attributeName] = propName;
        DOMProperty.getAttributeName[propName] = attributeName;
      } else {
        DOMProperty.getAttributeName[propName] = lowerCased;
      }

      DOMProperty.getPropertyName[propName] =
        DOMPropertyNames.hasOwnProperty(propName) ?
          DOMPropertyNames[propName] :
          propName;

      if (DOMMutationMethods.hasOwnProperty(propName)) {
        DOMProperty.getMutationMethod[propName] = DOMMutationMethods[propName];
      } else {
        DOMProperty.getMutationMethod[propName] = null;
      }

      var propConfig = Properties[propName];
      DOMProperty.mustUseAttribute[propName] =
        checkMask(propConfig, DOMPropertyInjection.MUST_USE_ATTRIBUTE);
      DOMProperty.mustUseProperty[propName] =
        checkMask(propConfig, DOMPropertyInjection.MUST_USE_PROPERTY);
      DOMProperty.hasSideEffects[propName] =
        checkMask(propConfig, DOMPropertyInjection.HAS_SIDE_EFFECTS);
      DOMProperty.hasBooleanValue[propName] =
        checkMask(propConfig, DOMPropertyInjection.HAS_BOOLEAN_VALUE);
      DOMProperty.hasNumericValue[propName] =
        checkMask(propConfig, DOMPropertyInjection.HAS_NUMERIC_VALUE);
      DOMProperty.hasPositiveNumericValue[propName] =
        checkMask(propConfig, DOMPropertyInjection.HAS_POSITIVE_NUMERIC_VALUE);
      DOMProperty.hasOverloadedBooleanValue[propName] =
        checkMask(propConfig, DOMPropertyInjection.HAS_OVERLOADED_BOOLEAN_VALUE);

      ("production" !== "development" ? invariant(
        !DOMProperty.mustUseAttribute[propName] ||
          !DOMProperty.mustUseProperty[propName],
        'DOMProperty: Cannot require using both attribute and property: %s',
        propName
      ) : invariant(!DOMProperty.mustUseAttribute[propName] ||
        !DOMProperty.mustUseProperty[propName]));
      ("production" !== "development" ? invariant(
        DOMProperty.mustUseProperty[propName] ||
          !DOMProperty.hasSideEffects[propName],
        'DOMProperty: Properties that have side effects must use property: %s',
        propName
      ) : invariant(DOMProperty.mustUseProperty[propName] ||
        !DOMProperty.hasSideEffects[propName]));
      ("production" !== "development" ? invariant(
        !!DOMProperty.hasBooleanValue[propName] +
          !!DOMProperty.hasNumericValue[propName] +
          !!DOMProperty.hasOverloadedBooleanValue[propName] <= 1,
        'DOMProperty: Value can be one of boolean, overloaded boolean, or ' +
        'numeric value, but not a combination: %s',
        propName
      ) : invariant(!!DOMProperty.hasBooleanValue[propName] +
        !!DOMProperty.hasNumericValue[propName] +
        !!DOMProperty.hasOverloadedBooleanValue[propName] <= 1));
    }
  }
 };
 var defaultValueCache = {};

 /**
 * DOMProperty exports lookup objects that can be used like functions:
 *
 *   > DOMProperty.isValid['id']
 *   true
 *   > DOMProperty.isValid['foobar']
 *   undefined
 *
 * Although this may be confusing, it performs better in general.
 *
 * @see http://jsperf.com/key-exists
 * @see http://jsperf.com/key-missing
 */
 var DOMProperty = {

  ID_ATTRIBUTE_NAME: 'data-reactid',

  /**
   * Checks whether a property name is a standard property.
   * @type {Object}
   */
  isStandardName: {},

  /**
   * Mapping from lowercase property names to the properly cased version, used
   * to warn in the case of missing properties.
   * @type {Object}
   */
  getPossibleStandardName: {},

  /**
   * Mapping from normalized names to attribute names that differ. Attribute
   * names are used when rendering markup or with `*Attribute()`.
   * @type {Object}
   */
  getAttributeName: {},

  /**
   * Mapping from normalized names to properties on DOM node instances.
   * (This includes properties that mutate due to external factors.)
   * @type {Object}
   */
  getPropertyName: {},

  /**
   * Mapping from normalized names to mutation methods. This will only exist if
   * mutation cannot be set simply by the property or `setAttribute()`.
   * @type {Object}
   */
  getMutationMethod: {},

  /**
   * Whether the property must be accessed and mutated as an object property.
   * @type {Object}
   */
  mustUseAttribute: {},

  /**
   * Whether the property must be accessed and mutated using `*Attribute()`.
   * (This includes anything that fails `<propName> in <element>`.)
   * @type {Object}
   */
  mustUseProperty: {},

  /**
   * Whether or not setting a value causes side effects such as triggering
   * resources to be loaded or text selection changes. We must ensure that
   * the value is only set if it has changed.
   * @type {Object}
   */
  hasSideEffects: {},

  /**
   * Whether the property should be removed when set to a falsey value.
   * @type {Object}
   */
  hasBooleanValue: {},

  /**
   * Whether the property must be numeric or parse as a
   * numeric and should be removed when set to a falsey value.
   * @type {Object}
   */
  hasNumericValue: {},

  /**
   * Whether the property must be positive numeric or parse as a positive
   * numeric and should be removed when set to a falsey value.
   * @type {Object}
   */
  hasPositiveNumericValue: {},

  /**
   * Whether the property can be used as a flag as well as with a value. Removed
   * when strictly equal to false; present without a value when strictly equal
   * to true; present with a value otherwise.
   * @type {Object}
   */
  hasOverloadedBooleanValue: {},

  /**
   * All of the isCustomAttribute() functions that have been injected.
   */
  _isCustomAttributeFunctions: [],

  /**
   * Checks whether a property name is a custom attribute.
   * @method
   */
  isCustomAttribute: function(attributeName) {
    for (var i = 0; i < DOMProperty._isCustomAttributeFunctions.length; i++) {
      var isCustomAttributeFn = DOMProperty._isCustomAttributeFunctions[i];
      if (isCustomAttributeFn(attributeName)) {
        return true;
      }
    }
    return false;
  },

  /**
   * Returns the default property value for a DOM property (i.e., not an
   * attribute). Most default values are '' or false, but not all. Worse yet,
   * some (in particular, `type`) vary depending on the type of element.
   *
   * TODO: Is it better to grab all the possible properties when creating an
   * element to avoid having to create the same element twice?
   */
  getDefaultValueForProperty: function(nodeName, prop) {
    var nodeDefaults = defaultValueCache[nodeName];
    var testElement;
    if (!nodeDefaults) {
      defaultValueCache[nodeName] = nodeDefaults = {};
    }
    if (!(prop in nodeDefaults)) {
      testElement = document.createElement(nodeName);
      nodeDefaults[prop] = testElement[prop];
    }
    return nodeDefaults[prop];
  },

  injection: DOMPropertyInjection
 };

 module.exports = DOMProperty;

 },{"./invariant":126}],12:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule DOMPropertyOperations
 * @typechecks static-only
 */

 "use strict";

 var DOMProperty = _dereq_("./DOMProperty");

 var escapeTextForBrowser = _dereq_("./escapeTextForBrowser");
 var memoizeStringOnly = _dereq_("./memoizeStringOnly");
 var warning = _dereq_("./warning");

 function shouldIgnoreValue(name, value) {
  return value == null ||
    (DOMProperty.hasBooleanValue[name] && !value) ||
    (DOMProperty.hasNumericValue[name] && isNaN(value)) ||
    (DOMProperty.hasPositiveNumericValue[name] && (value < 1)) ||
    (DOMProperty.hasOverloadedBooleanValue[name] && value === false);
 }

 var processAttributeNameAndPrefix = memoizeStringOnly(function(name) {
  return escapeTextForBrowser(name) + '="';
 });

 if ("production" !== "development") {
  var reactProps = {
    children: true,
    dangerouslySetInnerHTML: true,
    key: true,
    ref: true
  };
  var warnedProperties = {};

  var warnUnknownProperty = function(name) {
    if (reactProps.hasOwnProperty(name) && reactProps[name] ||
        warnedProperties.hasOwnProperty(name) && warnedProperties[name]) {
      return;
    }

    warnedProperties[name] = true;
    var lowerCasedName = name.toLowerCase();

    // data-* attributes should be lowercase; suggest the lowercase version
    var standardName = (
      DOMProperty.isCustomAttribute(lowerCasedName) ?
        lowerCasedName :
      DOMProperty.getPossibleStandardName.hasOwnProperty(lowerCasedName) ?
        DOMProperty.getPossibleStandardName[lowerCasedName] :
        null
    );

    // For now, only warn when we have a suggested correction. This prevents
    // logging too much when using transferPropsTo.
    ("production" !== "development" ? warning(
      standardName == null,
      'Unknown DOM property ' + name + '. Did you mean ' + standardName + '?'
    ) : null);

  };
 }

 /**
 * Operations for dealing with DOM properties.
 */
 var DOMPropertyOperations = {

  /**
   * Creates markup for the ID property.
   *
   * @param {string} id Unescaped ID.
   * @return {string} Markup string.
   */
  createMarkupForID: function(id) {
    return processAttributeNameAndPrefix(DOMProperty.ID_ATTRIBUTE_NAME) +
      escapeTextForBrowser(id) + '"';
  },

  /**
   * Creates markup for a property.
   *
   * @param {string} name
   * @param {*} value
   * @return {?string} Markup string, or null if the property was invalid.
   */
  createMarkupForProperty: function(name, value) {
    if (DOMProperty.isStandardName.hasOwnProperty(name) &&
        DOMProperty.isStandardName[name]) {
      if (shouldIgnoreValue(name, value)) {
        return '';
      }
      var attributeName = DOMProperty.getAttributeName[name];
      if (DOMProperty.hasBooleanValue[name] ||
          (DOMProperty.hasOverloadedBooleanValue[name] && value === true)) {
        return escapeTextForBrowser(attributeName);
      }
      return processAttributeNameAndPrefix(attributeName) +
        escapeTextForBrowser(value) + '"';
    } else if (DOMProperty.isCustomAttribute(name)) {
      if (value == null) {
        return '';
      }
      return processAttributeNameAndPrefix(name) +
        escapeTextForBrowser(value) + '"';
    } else if ("production" !== "development") {
      warnUnknownProperty(name);
    }
    return null;
  },

  /**
   * Sets the value for a property on a node.
   *
   * @param {DOMElement} node
   * @param {string} name
   * @param {*} value
   */
  setValueForProperty: function(node, name, value) {
    if (DOMProperty.isStandardName.hasOwnProperty(name) &&
        DOMProperty.isStandardName[name]) {
      var mutationMethod = DOMProperty.getMutationMethod[name];
      if (mutationMethod) {
        mutationMethod(node, value);
      } else if (shouldIgnoreValue(name, value)) {
        this.deleteValueForProperty(node, name);
      } else if (DOMProperty.mustUseAttribute[name]) {
        // `setAttribute` with objects becomes only `[object]` in IE8/9,
        // ('' + value) makes it output the correct toString()-value.
        node.setAttribute(DOMProperty.getAttributeName[name], '' + value);
      } else {
        var propName = DOMProperty.getPropertyName[name];
        // Must explicitly cast values for HAS_SIDE_EFFECTS-properties to the
        // property type before comparing; only `value` does and is string.
        if (!DOMProperty.hasSideEffects[name] ||
            ('' + node[propName]) !== ('' + value)) {
          // Contrary to `setAttribute`, object properties are properly
          // `toString`ed by IE8/9.
          node[propName] = value;
        }
      }
    } else if (DOMProperty.isCustomAttribute(name)) {
      if (value == null) {
        node.removeAttribute(name);
      } else {
        node.setAttribute(name, '' + value);
      }
    } else if ("production" !== "development") {
      warnUnknownProperty(name);
    }
  },

  /**
   * Deletes the value for a property on a node.
   *
   * @param {DOMElement} node
   * @param {string} name
   */
  deleteValueForProperty: function(node, name) {
    if (DOMProperty.isStandardName.hasOwnProperty(name) &&
        DOMProperty.isStandardName[name]) {
      var mutationMethod = DOMProperty.getMutationMethod[name];
      if (mutationMethod) {
        mutationMethod(node, undefined);
      } else if (DOMProperty.mustUseAttribute[name]) {
        node.removeAttribute(DOMProperty.getAttributeName[name]);
      } else {
        var propName = DOMProperty.getPropertyName[name];
        var defaultValue = DOMProperty.getDefaultValueForProperty(
          node.nodeName,
          propName
        );
        if (!DOMProperty.hasSideEffects[name] ||
            ('' + node[propName]) !== defaultValue) {
          node[propName] = defaultValue;
        }
      }
    } else if (DOMProperty.isCustomAttribute(name)) {
      node.removeAttribute(name);
    } else if ("production" !== "development") {
      warnUnknownProperty(name);
    }
  }

 };

 module.exports = DOMPropertyOperations;

 },{"./DOMProperty":11,"./escapeTextForBrowser":109,"./memoizeStringOnly":135,"./warning":145}],13:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule Danger
 * @typechecks static-only
 */

 /*jslint evil: true, sub: true */

 "use strict";

 var ExecutionEnvironment = _dereq_("./ExecutionEnvironment");

 var createNodesFromMarkup = _dereq_("./createNodesFromMarkup");
 var emptyFunction = _dereq_("./emptyFunction");
 var getMarkupWrap = _dereq_("./getMarkupWrap");
 var invariant = _dereq_("./invariant");

 var OPEN_TAG_NAME_EXP = /^(<[^ \/>]+)/;
 var RESULT_INDEX_ATTR = 'data-danger-index';

 /**
 * Extracts the `nodeName` from a string of markup.
 *
 * NOTE: Extracting the `nodeName` does not require a regular expression match
 * because we make assumptions about React-generated markup (i.e. there are no
 * spaces surrounding the opening tag and there is at least one attribute).
 *
 * @param {string} markup String of markup.
 * @return {string} Node name of the supplied markup.
 * @see http://jsperf.com/extract-nodename
 */
 function getNodeName(markup) {
  return markup.substring(1, markup.indexOf(' '));
 }

 var Danger = {

  /**
   * Renders markup into an array of nodes. The markup is expected to render
   * into a list of root nodes. Also, the length of `resultList` and
   * `markupList` should be the same.
   *
   * @param {array<string>} markupList List of markup strings to render.
   * @return {array<DOMElement>} List of rendered nodes.
   * @internal
   */
  dangerouslyRenderMarkup: function(markupList) {
    ("production" !== "development" ? invariant(
      ExecutionEnvironment.canUseDOM,
      'dangerouslyRenderMarkup(...): Cannot render markup in a worker ' +
      'thread. Make sure `window` and `document` are available globally ' +
      'before requiring React when unit testing or use ' +
      'React.renderToString for server rendering.'
    ) : invariant(ExecutionEnvironment.canUseDOM));
    var nodeName;
    var markupByNodeName = {};
    // Group markup by `nodeName` if a wrap is necessary, else by '*'.
    for (var i = 0; i < markupList.length; i++) {
      ("production" !== "development" ? invariant(
        markupList[i],
        'dangerouslyRenderMarkup(...): Missing markup.'
      ) : invariant(markupList[i]));
      nodeName = getNodeName(markupList[i]);
      nodeName = getMarkupWrap(nodeName) ? nodeName : '*';
      markupByNodeName[nodeName] = markupByNodeName[nodeName] || [];
      markupByNodeName[nodeName][i] = markupList[i];
    }
    var resultList = [];
    var resultListAssignmentCount = 0;
    for (nodeName in markupByNodeName) {
      if (!markupByNodeName.hasOwnProperty(nodeName)) {
        continue;
      }
      var markupListByNodeName = markupByNodeName[nodeName];

      // This for-in loop skips the holes of the sparse array. The order of
      // iteration should follow the order of assignment, which happens to match
      // numerical index order, but we don't rely on that.
      for (var resultIndex in markupListByNodeName) {
        if (markupListByNodeName.hasOwnProperty(resultIndex)) {
          var markup = markupListByNodeName[resultIndex];

          // Push the requested markup with an additional RESULT_INDEX_ATTR
          // attribute.  If the markup does not start with a < character, it
          // will be discarded below (with an appropriate console.error).
          markupListByNodeName[resultIndex] = markup.replace(
            OPEN_TAG_NAME_EXP,
            // This index will be parsed back out below.
            '$1 ' + RESULT_INDEX_ATTR + '="' + resultIndex + '" '
          );
        }
      }

      // Render each group of markup with similar wrapping `nodeName`.
      var renderNodes = createNodesFromMarkup(
        markupListByNodeName.join(''),
        emptyFunction // Do nothing special with <script> tags.
      );

      for (i = 0; i < renderNodes.length; ++i) {
        var renderNode = renderNodes[i];
        if (renderNode.hasAttribute &&
            renderNode.hasAttribute(RESULT_INDEX_ATTR)) {

          resultIndex = +renderNode.getAttribute(RESULT_INDEX_ATTR);
          renderNode.removeAttribute(RESULT_INDEX_ATTR);

          ("production" !== "development" ? invariant(
            !resultList.hasOwnProperty(resultIndex),
            'Danger: Assigning to an already-occupied result index.'
          ) : invariant(!resultList.hasOwnProperty(resultIndex)));

          resultList[resultIndex] = renderNode;

          // This should match resultList.length and markupList.length when
          // we're done.
          resultListAssignmentCount += 1;

        } else if ("production" !== "development") {
          console.error(
            "Danger: Discarding unexpected node:",
            renderNode
          );
        }
      }
    }

    // Although resultList was populated out of order, it should now be a dense
    // array.
    ("production" !== "development" ? invariant(
      resultListAssignmentCount === resultList.length,
      'Danger: Did not assign to every index of resultList.'
    ) : invariant(resultListAssignmentCount === resultList.length));

    ("production" !== "development" ? invariant(
      resultList.length === markupList.length,
      'Danger: Expected markup to render %s nodes, but rendered %s.',
      markupList.length,
      resultList.length
    ) : invariant(resultList.length === markupList.length));

    return resultList;
  },

  /**
   * Replaces a node with a string of markup at its current position within its
   * parent. The markup must render into a single root node.
   *
   * @param {DOMElement} oldChild Child node to replace.
   * @param {string} markup Markup to render in place of the child node.
   * @internal
   */
  dangerouslyReplaceNodeWithMarkup: function(oldChild, markup) {
    ("production" !== "development" ? invariant(
      ExecutionEnvironment.canUseDOM,
      'dangerouslyReplaceNodeWithMarkup(...): Cannot render markup in a ' +
      'worker thread. Make sure `window` and `document` are available ' +
      'globally before requiring React when unit testing or use ' +
      'React.renderToString for server rendering.'
    ) : invariant(ExecutionEnvironment.canUseDOM));
    ("production" !== "development" ? invariant(markup, 'dangerouslyReplaceNodeWithMarkup(...): Missing markup.') : invariant(markup));
    ("production" !== "development" ? invariant(
      oldChild.tagName.toLowerCase() !== 'html',
      'dangerouslyReplaceNodeWithMarkup(...): Cannot replace markup of the ' +
      '<html> node. This is because browser quirks make this unreliable ' +
      'and/or slow. If you want to render to the root you must use ' +
      'server rendering. See renderComponentToString().'
    ) : invariant(oldChild.tagName.toLowerCase() !== 'html'));

    var newChild = createNodesFromMarkup(markup, emptyFunction)[0];
    oldChild.parentNode.replaceChild(newChild, oldChild);
  }

 };

 module.exports = Danger;

 },{"./ExecutionEnvironment":22,"./createNodesFromMarkup":104,"./emptyFunction":107,"./getMarkupWrap":118,"./invariant":126}],14:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule DefaultEventPluginOrder
 */

 "use strict";

 var keyOf = _dereq_("./keyOf");

 /**
 * Module that is injectable into `EventPluginHub`, that specifies a
 * deterministic ordering of `EventPlugin`s. A convenient way to reason about
 * plugins, without having to package every one of them. This is better than
 * having plugins be ordered in the same order that they are injected because
 * that ordering would be influenced by the packaging order.
 * `ResponderEventPlugin` must occur before `SimpleEventPlugin` so that
 * preventing default on events is convenient in `SimpleEventPlugin` handlers.
 */
 var DefaultEventPluginOrder = [
  keyOf({ResponderEventPlugin: null}),
  keyOf({SimpleEventPlugin: null}),
  keyOf({TapEventPlugin: null}),
  keyOf({EnterLeaveEventPlugin: null}),
  keyOf({ChangeEventPlugin: null}),
  keyOf({SelectEventPlugin: null}),
  keyOf({CompositionEventPlugin: null}),
  keyOf({BeforeInputEventPlugin: null}),
  keyOf({AnalyticsEventPlugin: null}),
  keyOf({MobileSafariClickEventPlugin: null})
 ];

 module.exports = DefaultEventPluginOrder;

 },{"./keyOf":133}],15:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule EnterLeaveEventPlugin
 * @typechecks static-only
 */

 "use strict";

 var EventConstants = _dereq_("./EventConstants");
 var EventPropagators = _dereq_("./EventPropagators");
 var SyntheticMouseEvent = _dereq_("./SyntheticMouseEvent");

 var ReactMount = _dereq_("./ReactMount");
 var keyOf = _dereq_("./keyOf");

 var topLevelTypes = EventConstants.topLevelTypes;
 var getFirstReactDOM = ReactMount.getFirstReactDOM;

 var eventTypes = {
  mouseEnter: {
    registrationName: keyOf({onMouseEnter: null}),
    dependencies: [
      topLevelTypes.topMouseOut,
      topLevelTypes.topMouseOver
    ]
  },
  mouseLeave: {
    registrationName: keyOf({onMouseLeave: null}),
    dependencies: [
      topLevelTypes.topMouseOut,
      topLevelTypes.topMouseOver
    ]
  }
 };

 var extractedEvents = [null, null];

 var EnterLeaveEventPlugin = {

  eventTypes: eventTypes,

  /**
   * For almost every interaction we care about, there will be both a top-level
   * `mouseover` and `mouseout` event that occurs. Only use `mouseout` so that
   * we do not extract duplicate events. However, moving the mouse into the
   * browser from outside will not fire a `mouseout` event. In this case, we use
   * the `mouseover` top-level event.
   *
   * @param {string} topLevelType Record from `EventConstants`.
   * @param {DOMEventTarget} topLevelTarget The listening component root node.
   * @param {string} topLevelTargetID ID of `topLevelTarget`.
   * @param {object} nativeEvent Native browser event.
   * @return {*} An accumulation of synthetic events.
   * @see {EventPluginHub.extractEvents}
   */
  extractEvents: function(
      topLevelType,
      topLevelTarget,
      topLevelTargetID,
      nativeEvent) {
    if (topLevelType === topLevelTypes.topMouseOver &&
        (nativeEvent.relatedTarget || nativeEvent.fromElement)) {
      return null;
    }
    if (topLevelType !== topLevelTypes.topMouseOut &&
        topLevelType !== topLevelTypes.topMouseOver) {
      // Must not be a mouse in or mouse out - ignoring.
      return null;
    }

    var win;
    if (topLevelTarget.window === topLevelTarget) {
      // `topLevelTarget` is probably a window object.
      win = topLevelTarget;
    } else {
      // TODO: Figure out why `ownerDocument` is sometimes undefined in IE8.
      var doc = topLevelTarget.ownerDocument;
      if (doc) {
        win = doc.defaultView || doc.parentWindow;
      } else {
        win = window;
      }
    }

    var from, to;
    if (topLevelType === topLevelTypes.topMouseOut) {
      from = topLevelTarget;
      to =
        getFirstReactDOM(nativeEvent.relatedTarget || nativeEvent.toElement) ||
        win;
    } else {
      from = win;
      to = topLevelTarget;
    }

    if (from === to) {
      // Nothing pertains to our managed components.
      return null;
    }

    var fromID = from ? ReactMount.getID(from) : '';
    var toID = to ? ReactMount.getID(to) : '';

    var leave = SyntheticMouseEvent.getPooled(
      eventTypes.mouseLeave,
      fromID,
      nativeEvent
    );
    leave.type = 'mouseleave';
    leave.target = from;
    leave.relatedTarget = to;

    var enter = SyntheticMouseEvent.getPooled(
      eventTypes.mouseEnter,
      toID,
      nativeEvent
    );
    enter.type = 'mouseenter';
    enter.target = to;
    enter.relatedTarget = from;

    EventPropagators.accumulateEnterLeaveDispatches(leave, enter, fromID, toID);

    extractedEvents[0] = leave;
    extractedEvents[1] = enter;

    return extractedEvents;
  }

 };

 module.exports = EnterLeaveEventPlugin;

 },{"./EventConstants":16,"./EventPropagators":21,"./ReactMount":63,"./SyntheticMouseEvent":91,"./keyOf":133}],16:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule EventConstants
 */

 "use strict";

 var keyMirror = _dereq_("./keyMirror");

 var PropagationPhases = keyMirror({bubbled: null, captured: null});

 /**
 * Types of raw signals from the browser caught at the top level.
 */
 var topLevelTypes = keyMirror({
  topBlur: null,
  topChange: null,
  topClick: null,
  topCompositionEnd: null,
  topCompositionStart: null,
  topCompositionUpdate: null,
  topContextMenu: null,
  topCopy: null,
  topCut: null,
  topDoubleClick: null,
  topDrag: null,
  topDragEnd: null,
  topDragEnter: null,
  topDragExit: null,
  topDragLeave: null,
  topDragOver: null,
  topDragStart: null,
  topDrop: null,
  topError: null,
  topFocus: null,
  topInput: null,
  topKeyDown: null,
  topKeyPress: null,
  topKeyUp: null,
  topLoad: null,
  topMouseDown: null,
  topMouseMove: null,
  topMouseOut: null,
  topMouseOver: null,
  topMouseUp: null,
  topPaste: null,
  topReset: null,
  topScroll: null,
  topSelectionChange: null,
  topSubmit: null,
  topTextInput: null,
  topTouchCancel: null,
  topTouchEnd: null,
  topTouchMove: null,
  topTouchStart: null,
  topWheel: null
 });

 var EventConstants = {
  topLevelTypes: topLevelTypes,
  PropagationPhases: PropagationPhases
 };

 module.exports = EventConstants;

 },{"./keyMirror":132}],17:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014 Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * @providesModule EventListener
 * @typechecks
 */

 var emptyFunction = _dereq_("./emptyFunction");

 /**
 * Upstream version of event listener. Does not take into account specific
 * nature of platform.
 */
 var EventListener = {
  /**
   * Listen to DOM events during the bubble phase.
   *
   * @param {DOMEventTarget} target DOM element to register listener on.
   * @param {string} eventType Event type, e.g. 'click' or 'mouseover'.
   * @param {function} callback Callback function.
   * @return {object} Object with a `remove` method.
   */
  listen: function(target, eventType, callback) {
    if (target.addEventListener) {
      target.addEventListener(eventType, callback, false);
      return {
        remove: function() {
          target.removeEventListener(eventType, callback, false);
        }
      };
    } else if (target.attachEvent) {
      target.attachEvent('on' + eventType, callback);
      return {
        remove: function() {
          target.detachEvent('on' + eventType, callback);
        }
      };
    }
  },

  /**
   * Listen to DOM events during the capture phase.
   *
   * @param {DOMEventTarget} target DOM element to register listener on.
   * @param {string} eventType Event type, e.g. 'click' or 'mouseover'.
   * @param {function} callback Callback function.
   * @return {object} Object with a `remove` method.
   */
  capture: function(target, eventType, callback) {
    if (!target.addEventListener) {
      if ("production" !== "development") {
        console.error(
          'Attempted to listen to events during the capture phase on a ' +
          'browser that does not support the capture phase. Your application ' +
          'will not receive some events.'
        );
      }
      return {
        remove: emptyFunction
      };
    } else {
      target.addEventListener(eventType, callback, true);
      return {
        remove: function() {
          target.removeEventListener(eventType, callback, true);
        }
      };
    }
  },

  registerDefault: function() {}
 };

 module.exports = EventListener;

 },{"./emptyFunction":107}],18:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule EventPluginHub
 */

 "use strict";

 var EventPluginRegistry = _dereq_("./EventPluginRegistry");
 var EventPluginUtils = _dereq_("./EventPluginUtils");

 var accumulateInto = _dereq_("./accumulateInto");
 var forEachAccumulated = _dereq_("./forEachAccumulated");
 var invariant = _dereq_("./invariant");

 /**
 * Internal store for event listeners
 */
 var listenerBank = {};

 /**
 * Internal queue of events that have accumulated their dispatches and are
 * waiting to have their dispatches executed.
 */
 var eventQueue = null;

 /**
 * Dispatches an event and releases it back into the pool, unless persistent.
 *
 * @param {?object} event Synthetic event to be dispatched.
 * @private
 */
 var executeDispatchesAndRelease = function(event) {
  if (event) {
    var executeDispatch = EventPluginUtils.executeDispatch;
    // Plugins can provide custom behavior when dispatching events.
    var PluginModule = EventPluginRegistry.getPluginModuleForEvent(event);
    if (PluginModule && PluginModule.executeDispatch) {
      executeDispatch = PluginModule.executeDispatch;
    }
    EventPluginUtils.executeDispatchesInOrder(event, executeDispatch);

    if (!event.isPersistent()) {
      event.constructor.release(event);
    }
  }
 };

 /**
 * - `InstanceHandle`: [required] Module that performs logical traversals of DOM
 *   hierarchy given ids of the logical DOM elements involved.
 */
 var InstanceHandle = null;

 function validateInstanceHandle() {
  var invalid = !InstanceHandle||
    !InstanceHandle.traverseTwoPhase ||
    !InstanceHandle.traverseEnterLeave;
  if (invalid) {
    throw new Error('InstanceHandle not injected before use!');
  }
 }

 /**
 * This is a unified interface for event plugins to be installed and configured.
 *
 * Event plugins can implement the following properties:
 *
 *   `extractEvents` {function(string, DOMEventTarget, string, object): *}
 *     Required. When a top-level event is fired, this method is expected to
 *     extract synthetic events that will in turn be queued and dispatched.
 *
 *   `eventTypes` {object}
 *     Optional, plugins that fire events must publish a mapping of registration
 *     names that are used to register listeners. Values of this mapping must
 *     be objects that contain `registrationName` or `phasedRegistrationNames`.
 *
 *   `executeDispatch` {function(object, function, string)}
 *     Optional, allows plugins to override how an event gets dispatched. By
 *     default, the listener is simply invoked.
 *
 * Each plugin that is injected into `EventsPluginHub` is immediately operable.
 *
 * @public
 */
 var EventPluginHub = {

  /**
   * Methods for injecting dependencies.
   */
  injection: {

    /**
     * @param {object} InjectedMount
     * @public
     */
    injectMount: EventPluginUtils.injection.injectMount,

    /**
     * @param {object} InjectedInstanceHandle
     * @public
     */
    injectInstanceHandle: function(InjectedInstanceHandle) {
      InstanceHandle = InjectedInstanceHandle;
      if ("production" !== "development") {
        validateInstanceHandle();
      }
    },

    getInstanceHandle: function() {
      if ("production" !== "development") {
        validateInstanceHandle();
      }
      return InstanceHandle;
    },

    /**
     * @param {array} InjectedEventPluginOrder
     * @public
     */
    injectEventPluginOrder: EventPluginRegistry.injectEventPluginOrder,

    /**
     * @param {object} injectedNamesToPlugins Map from names to plugin modules.
     */
    injectEventPluginsByName: EventPluginRegistry.injectEventPluginsByName

  },

  eventNameDispatchConfigs: EventPluginRegistry.eventNameDispatchConfigs,

  registrationNameModules: EventPluginRegistry.registrationNameModules,

  /**
   * Stores `listener` at `listenerBank[registrationName][id]`. Is idempotent.
   *
   * @param {string} id ID of the DOM element.
   * @param {string} registrationName Name of listener (e.g. `onClick`).
   * @param {?function} listener The callback to store.
   */
  putListener: function(id, registrationName, listener) {
    ("production" !== "development" ? invariant(
      !listener || typeof listener === 'function',
      'Expected %s listener to be a function, instead got type %s',
      registrationName, typeof listener
    ) : invariant(!listener || typeof listener === 'function'));

    var bankForRegistrationName =
      listenerBank[registrationName] || (listenerBank[registrationName] = {});
    bankForRegistrationName[id] = listener;
  },

  /**
   * @param {string} id ID of the DOM element.
   * @param {string} registrationName Name of listener (e.g. `onClick`).
   * @return {?function} The stored callback.
   */
  getListener: function(id, registrationName) {
    var bankForRegistrationName = listenerBank[registrationName];
    return bankForRegistrationName && bankForRegistrationName[id];
  },

  /**
   * Deletes a listener from the registration bank.
   *
   * @param {string} id ID of the DOM element.
   * @param {string} registrationName Name of listener (e.g. `onClick`).
   */
  deleteListener: function(id, registrationName) {
    var bankForRegistrationName = listenerBank[registrationName];
    if (bankForRegistrationName) {
      delete bankForRegistrationName[id];
    }
  },

  /**
   * Deletes all listeners for the DOM element with the supplied ID.
   *
   * @param {string} id ID of the DOM element.
   */
  deleteAllListeners: function(id) {
    for (var registrationName in listenerBank) {
      delete listenerBank[registrationName][id];
    }
  },

  /**
   * Allows registered plugins an opportunity to extract events from top-level
   * native browser events.
   *
   * @param {string} topLevelType Record from `EventConstants`.
   * @param {DOMEventTarget} topLevelTarget The listening component root node.
   * @param {string} topLevelTargetID ID of `topLevelTarget`.
   * @param {object} nativeEvent Native browser event.
   * @return {*} An accumulation of synthetic events.
   * @internal
   */
  extractEvents: function(
      topLevelType,
      topLevelTarget,
      topLevelTargetID,
      nativeEvent) {
    var events;
    var plugins = EventPluginRegistry.plugins;
    for (var i = 0, l = plugins.length; i < l; i++) {
      // Not every plugin in the ordering may be loaded at runtime.
      var possiblePlugin = plugins[i];
      if (possiblePlugin) {
        var extractedEvents = possiblePlugin.extractEvents(
          topLevelType,
          topLevelTarget,
          topLevelTargetID,
          nativeEvent
        );
        if (extractedEvents) {
          events = accumulateInto(events, extractedEvents);
        }
      }
    }
    return events;
  },

  /**
   * Enqueues a synthetic event that should be dispatched when
   * `processEventQueue` is invoked.
   *
   * @param {*} events An accumulation of synthetic events.
   * @internal
   */
  enqueueEvents: function(events) {
    if (events) {
      eventQueue = accumulateInto(eventQueue, events);
    }
  },

  /**
   * Dispatches all synthetic events on the event queue.
   *
   * @internal
   */
  processEventQueue: function() {
    // Set `eventQueue` to null before processing it so that we can tell if more
    // events get enqueued while processing.
    var processingEventQueue = eventQueue;
    eventQueue = null;
    forEachAccumulated(processingEventQueue, executeDispatchesAndRelease);
    ("production" !== "development" ? invariant(
      !eventQueue,
      'processEventQueue(): Additional events were enqueued while processing ' +
      'an event queue. Support for this has not yet been implemented.'
    ) : invariant(!eventQueue));
  },

  /**
   * These are needed for tests only. Do not use!
   */
  __purge: function() {
    listenerBank = {};
  },

  __getListenerBank: function() {
    return listenerBank;
  }

 };

 module.exports = EventPluginHub;

 },{"./EventPluginRegistry":19,"./EventPluginUtils":20,"./accumulateInto":97,"./forEachAccumulated":112,"./invariant":126}],19:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule EventPluginRegistry
 * @typechecks static-only
 */

 "use strict";

 var invariant = _dereq_("./invariant");

 /**
 * Injectable ordering of event plugins.
 */
 var EventPluginOrder = null;

 /**
 * Injectable mapping from names to event plugin modules.
 */
 var namesToPlugins = {};

 /**
 * Recomputes the plugin list using the injected plugins and plugin ordering.
 *
 * @private
 */
 function recomputePluginOrdering() {
  if (!EventPluginOrder) {
    // Wait until an `EventPluginOrder` is injected.
    return;
  }
  for (var pluginName in namesToPlugins) {
    var PluginModule = namesToPlugins[pluginName];
    var pluginIndex = EventPluginOrder.indexOf(pluginName);
    ("production" !== "development" ? invariant(
      pluginIndex > -1,
      'EventPluginRegistry: Cannot inject event plugins that do not exist in ' +
      'the plugin ordering, `%s`.',
      pluginName
    ) : invariant(pluginIndex > -1));
    if (EventPluginRegistry.plugins[pluginIndex]) {
      continue;
    }
    ("production" !== "development" ? invariant(
      PluginModule.extractEvents,
      'EventPluginRegistry: Event plugins must implement an `extractEvents` ' +
      'method, but `%s` does not.',
      pluginName
    ) : invariant(PluginModule.extractEvents));
    EventPluginRegistry.plugins[pluginIndex] = PluginModule;
    var publishedEvents = PluginModule.eventTypes;
    for (var eventName in publishedEvents) {
      ("production" !== "development" ? invariant(
        publishEventForPlugin(
          publishedEvents[eventName],
          PluginModule,
          eventName
        ),
        'EventPluginRegistry: Failed to publish event `%s` for plugin `%s`.',
        eventName,
        pluginName
      ) : invariant(publishEventForPlugin(
        publishedEvents[eventName],
        PluginModule,
        eventName
      )));
    }
  }
 }

 /**
 * Publishes an event so that it can be dispatched by the supplied plugin.
 *
 * @param {object} dispatchConfig Dispatch configuration for the event.
 * @param {object} PluginModule Plugin publishing the event.
 * @return {boolean} True if the event was successfully published.
 * @private
 */
 function publishEventForPlugin(dispatchConfig, PluginModule, eventName) {
  ("production" !== "development" ? invariant(
    !EventPluginRegistry.eventNameDispatchConfigs.hasOwnProperty(eventName),
    'EventPluginHub: More than one plugin attempted to publish the same ' +
    'event name, `%s`.',
    eventName
  ) : invariant(!EventPluginRegistry.eventNameDispatchConfigs.hasOwnProperty(eventName)));
  EventPluginRegistry.eventNameDispatchConfigs[eventName] = dispatchConfig;

  var phasedRegistrationNames = dispatchConfig.phasedRegistrationNames;
  if (phasedRegistrationNames) {
    for (var phaseName in phasedRegistrationNames) {
      if (phasedRegistrationNames.hasOwnProperty(phaseName)) {
        var phasedRegistrationName = phasedRegistrationNames[phaseName];
        publishRegistrationName(
          phasedRegistrationName,
          PluginModule,
          eventName
        );
      }
    }
    return true;
  } else if (dispatchConfig.registrationName) {
    publishRegistrationName(
      dispatchConfig.registrationName,
      PluginModule,
      eventName
    );
    return true;
  }
  return false;
 }

 /**
 * Publishes a registration name that is used to identify dispatched events and
 * can be used with `EventPluginHub.putListener` to register listeners.
 *
 * @param {string} registrationName Registration name to add.
 * @param {object} PluginModule Plugin publishing the event.
 * @private
 */
 function publishRegistrationName(registrationName, PluginModule, eventName) {
  ("production" !== "development" ? invariant(
    !EventPluginRegistry.registrationNameModules[registrationName],
    'EventPluginHub: More than one plugin attempted to publish the same ' +
    'registration name, `%s`.',
    registrationName
  ) : invariant(!EventPluginRegistry.registrationNameModules[registrationName]));
  EventPluginRegistry.registrationNameModules[registrationName] = PluginModule;
  EventPluginRegistry.registrationNameDependencies[registrationName] =
    PluginModule.eventTypes[eventName].dependencies;
 }

 /**
 * Registers plugins so that they can extract and dispatch events.
 *
 * @see {EventPluginHub}
 */
 var EventPluginRegistry = {

  /**
   * Ordered list of injected plugins.
   */
  plugins: [],

  /**
   * Mapping from event name to dispatch config
   */
  eventNameDispatchConfigs: {},

  /**
   * Mapping from registration name to plugin module
   */
  registrationNameModules: {},

  /**
   * Mapping from registration name to event name
   */
  registrationNameDependencies: {},

  /**
   * Injects an ordering of plugins (by plugin name). This allows the ordering
   * to be decoupled from injection of the actual plugins so that ordering is
   * always deterministic regardless of packaging, on-the-fly injection, etc.
   *
   * @param {array} InjectedEventPluginOrder
   * @internal
   * @see {EventPluginHub.injection.injectEventPluginOrder}
   */
  injectEventPluginOrder: function(InjectedEventPluginOrder) {
    ("production" !== "development" ? invariant(
      !EventPluginOrder,
      'EventPluginRegistry: Cannot inject event plugin ordering more than ' +
      'once. You are likely trying to load more than one copy of React.'
    ) : invariant(!EventPluginOrder));
    // Clone the ordering so it cannot be dynamically mutated.
    EventPluginOrder = Array.prototype.slice.call(InjectedEventPluginOrder);
    recomputePluginOrdering();
  },

  /**
   * Injects plugins to be used by `EventPluginHub`. The plugin names must be
   * in the ordering injected by `injectEventPluginOrder`.
   *
   * Plugins can be injected as part of page initialization or on-the-fly.
   *
   * @param {object} injectedNamesToPlugins Map from names to plugin modules.
   * @internal
   * @see {EventPluginHub.injection.injectEventPluginsByName}
   */
  injectEventPluginsByName: function(injectedNamesToPlugins) {
    var isOrderingDirty = false;
    for (var pluginName in injectedNamesToPlugins) {
      if (!injectedNamesToPlugins.hasOwnProperty(pluginName)) {
        continue;
      }
      var PluginModule = injectedNamesToPlugins[pluginName];
      if (!namesToPlugins.hasOwnProperty(pluginName) ||
          namesToPlugins[pluginName] !== PluginModule) {
        ("production" !== "development" ? invariant(
          !namesToPlugins[pluginName],
          'EventPluginRegistry: Cannot inject two different event plugins ' +
          'using the same name, `%s`.',
          pluginName
        ) : invariant(!namesToPlugins[pluginName]));
        namesToPlugins[pluginName] = PluginModule;
        isOrderingDirty = true;
      }
    }
    if (isOrderingDirty) {
      recomputePluginOrdering();
    }
  },

  /**
   * Looks up the plugin for the supplied event.
   *
   * @param {object} event A synthetic event.
   * @return {?object} The plugin that created the supplied event.
   * @internal
   */
  getPluginModuleForEvent: function(event) {
    var dispatchConfig = event.dispatchConfig;
    if (dispatchConfig.registrationName) {
      return EventPluginRegistry.registrationNameModules[
        dispatchConfig.registrationName
      ] || null;
    }
    for (var phase in dispatchConfig.phasedRegistrationNames) {
      if (!dispatchConfig.phasedRegistrationNames.hasOwnProperty(phase)) {
        continue;
      }
      var PluginModule = EventPluginRegistry.registrationNameModules[
        dispatchConfig.phasedRegistrationNames[phase]
      ];
      if (PluginModule) {
        return PluginModule;
      }
    }
    return null;
  },

  /**
   * Exposed for unit testing.
   * @private
   */
  _resetEventPlugins: function() {
    EventPluginOrder = null;
    for (var pluginName in namesToPlugins) {
      if (namesToPlugins.hasOwnProperty(pluginName)) {
        delete namesToPlugins[pluginName];
      }
    }
    EventPluginRegistry.plugins.length = 0;

    var eventNameDispatchConfigs = EventPluginRegistry.eventNameDispatchConfigs;
    for (var eventName in eventNameDispatchConfigs) {
      if (eventNameDispatchConfigs.hasOwnProperty(eventName)) {
        delete eventNameDispatchConfigs[eventName];
      }
    }

    var registrationNameModules = EventPluginRegistry.registrationNameModules;
    for (var registrationName in registrationNameModules) {
      if (registrationNameModules.hasOwnProperty(registrationName)) {
        delete registrationNameModules[registrationName];
      }
    }
  }

 };

 module.exports = EventPluginRegistry;

 },{"./invariant":126}],20:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule EventPluginUtils
 */

 "use strict";

 var EventConstants = _dereq_("./EventConstants");

 var invariant = _dereq_("./invariant");

 /**
 * Injected dependencies:
 */

 /**
 * - `Mount`: [required] Module that can convert between React dom IDs and
 *   actual node references.
 */
 var injection = {
  Mount: null,
  injectMount: function(InjectedMount) {
    injection.Mount = InjectedMount;
    if ("production" !== "development") {
      ("production" !== "development" ? invariant(
        InjectedMount && InjectedMount.getNode,
        'EventPluginUtils.injection.injectMount(...): Injected Mount module ' +
        'is missing getNode.'
      ) : invariant(InjectedMount && InjectedMount.getNode));
    }
  }
 };

 var topLevelTypes = EventConstants.topLevelTypes;

 function isEndish(topLevelType) {
  return topLevelType === topLevelTypes.topMouseUp ||
         topLevelType === topLevelTypes.topTouchEnd ||
         topLevelType === topLevelTypes.topTouchCancel;
 }

 function isMoveish(topLevelType) {
  return topLevelType === topLevelTypes.topMouseMove ||
         topLevelType === topLevelTypes.topTouchMove;
 }
 function isStartish(topLevelType) {
  return topLevelType === topLevelTypes.topMouseDown ||
         topLevelType === topLevelTypes.topTouchStart;
 }


 var validateEventDispatches;
 if ("production" !== "development") {
  validateEventDispatches = function(event) {
    var dispatchListeners = event._dispatchListeners;
    var dispatchIDs = event._dispatchIDs;

    var listenersIsArr = Array.isArray(dispatchListeners);
    var idsIsArr = Array.isArray(dispatchIDs);
    var IDsLen = idsIsArr ? dispatchIDs.length : dispatchIDs ? 1 : 0;
    var listenersLen = listenersIsArr ?
      dispatchListeners.length :
      dispatchListeners ? 1 : 0;

    ("production" !== "development" ? invariant(
      idsIsArr === listenersIsArr && IDsLen === listenersLen,
      'EventPluginUtils: Invalid `event`.'
    ) : invariant(idsIsArr === listenersIsArr && IDsLen === listenersLen));
  };
 }

 /**
 * Invokes `cb(event, listener, id)`. Avoids using call if no scope is
 * provided. The `(listener,id)` pair effectively forms the "dispatch" but are
 * kept separate to conserve memory.
 */
 function forEachEventDispatch(event, cb) {
  var dispatchListeners = event._dispatchListeners;
  var dispatchIDs = event._dispatchIDs;
  if ("production" !== "development") {
    validateEventDispatches(event);
  }
  if (Array.isArray(dispatchListeners)) {
    for (var i = 0; i < dispatchListeners.length; i++) {
      if (event.isPropagationStopped()) {
        break;
      }
      // Listeners and IDs are two parallel arrays that are always in sync.
      cb(event, dispatchListeners[i], dispatchIDs[i]);
    }
  } else if (dispatchListeners) {
    cb(event, dispatchListeners, dispatchIDs);
  }
 }

 /**
 * Default implementation of PluginModule.executeDispatch().
 * @param {SyntheticEvent} SyntheticEvent to handle
 * @param {function} Application-level callback
 * @param {string} domID DOM id to pass to the callback.
 */
 function executeDispatch(event, listener, domID) {
  event.currentTarget = injection.Mount.getNode(domID);
  var returnValue = listener(event, domID);
  event.currentTarget = null;
  return returnValue;
 }

 /**
 * Standard/simple iteration through an event's collected dispatches.
 */
 function executeDispatchesInOrder(event, executeDispatch) {
  forEachEventDispatch(event, executeDispatch);
  event._dispatchListeners = null;
  event._dispatchIDs = null;
 }

 /**
 * Standard/simple iteration through an event's collected dispatches, but stops
 * at the first dispatch execution returning true, and returns that id.
 *
 * @return id of the first dispatch execution who's listener returns true, or
 * null if no listener returned true.
 */
 function executeDispatchesInOrderStopAtTrueImpl(event) {
  var dispatchListeners = event._dispatchListeners;
  var dispatchIDs = event._dispatchIDs;
  if ("production" !== "development") {
    validateEventDispatches(event);
  }
  if (Array.isArray(dispatchListeners)) {
    for (var i = 0; i < dispatchListeners.length; i++) {
      if (event.isPropagationStopped()) {
        break;
      }
      // Listeners and IDs are two parallel arrays that are always in sync.
      if (dispatchListeners[i](event, dispatchIDs[i])) {
        return dispatchIDs[i];
      }
    }
  } else if (dispatchListeners) {
    if (dispatchListeners(event, dispatchIDs)) {
      return dispatchIDs;
    }
  }
  return null;
 }

 /**
 * @see executeDispatchesInOrderStopAtTrueImpl
 */
 function executeDispatchesInOrderStopAtTrue(event) {
  var ret = executeDispatchesInOrderStopAtTrueImpl(event);
  event._dispatchIDs = null;
  event._dispatchListeners = null;
  return ret;
 }

 /**
 * Execution of a "direct" dispatch - there must be at most one dispatch
 * accumulated on the event or it is considered an error. It doesn't really make
 * sense for an event with multiple dispatches (bubbled) to keep track of the
 * return values at each dispatch execution, but it does tend to make sense when
 * dealing with "direct" dispatches.
 *
 * @return The return value of executing the single dispatch.
 */
 function executeDirectDispatch(event) {
  if ("production" !== "development") {
    validateEventDispatches(event);
  }
  var dispatchListener = event._dispatchListeners;
  var dispatchID = event._dispatchIDs;
  ("production" !== "development" ? invariant(
    !Array.isArray(dispatchListener),
    'executeDirectDispatch(...): Invalid `event`.'
  ) : invariant(!Array.isArray(dispatchListener)));
  var res = dispatchListener ?
    dispatchListener(event, dispatchID) :
    null;
  event._dispatchListeners = null;
  event._dispatchIDs = null;
  return res;
 }

 /**
 * @param {SyntheticEvent} event
 * @return {bool} True iff number of dispatches accumulated is greater than 0.
 */
 function hasDispatches(event) {
  return !!event._dispatchListeners;
 }

 /**
 * General utilities that are useful in creating custom Event Plugins.
 */
 var EventPluginUtils = {
  isEndish: isEndish,
  isMoveish: isMoveish,
  isStartish: isStartish,

  executeDirectDispatch: executeDirectDispatch,
  executeDispatch: executeDispatch,
  executeDispatchesInOrder: executeDispatchesInOrder,
  executeDispatchesInOrderStopAtTrue: executeDispatchesInOrderStopAtTrue,
  hasDispatches: hasDispatches,
  injection: injection,
  useTouchEvents: false
 };

 module.exports = EventPluginUtils;

 },{"./EventConstants":16,"./invariant":126}],21:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule EventPropagators
 */

 "use strict";

 var EventConstants = _dereq_("./EventConstants");
 var EventPluginHub = _dereq_("./EventPluginHub");

 var accumulateInto = _dereq_("./accumulateInto");
 var forEachAccumulated = _dereq_("./forEachAccumulated");

 var PropagationPhases = EventConstants.PropagationPhases;
 var getListener = EventPluginHub.getListener;

 /**
 * Some event types have a notion of different registration names for different
 * "phases" of propagation. This finds listeners by a given phase.
 */
 function listenerAtPhase(id, event, propagationPhase) {
  var registrationName =
    event.dispatchConfig.phasedRegistrationNames[propagationPhase];
  return getListener(id, registrationName);
 }

 /**
 * Tags a `SyntheticEvent` with dispatched listeners. Creating this function
 * here, allows us to not have to bind or create functions for each event.
 * Mutating the event's members allows us to not have to create a wrapping
 * "dispatch" object that pairs the event with the listener.
 */
 function accumulateDirectionalDispatches(domID, upwards, event) {
  if ("production" !== "development") {
    if (!domID) {
      throw new Error('Dispatching id must not be null');
    }
  }
  var phase = upwards ? PropagationPhases.bubbled : PropagationPhases.captured;
  var listener = listenerAtPhase(domID, event, phase);
  if (listener) {
    event._dispatchListeners =
      accumulateInto(event._dispatchListeners, listener);
    event._dispatchIDs = accumulateInto(event._dispatchIDs, domID);
  }
 }

 /**
 * Collect dispatches (must be entirely collected before dispatching - see unit
 * tests). Lazily allocate the array to conserve memory.  We must loop through
 * each event and perform the traversal for each one. We can not perform a
 * single traversal for the entire collection of events because each event may
 * have a different target.
 */
 function accumulateTwoPhaseDispatchesSingle(event) {
  if (event && event.dispatchConfig.phasedRegistrationNames) {
    EventPluginHub.injection.getInstanceHandle().traverseTwoPhase(
      event.dispatchMarker,
      accumulateDirectionalDispatches,
      event
    );
  }
 }


 /**
 * Accumulates without regard to direction, does not look for phased
 * registration names. Same as `accumulateDirectDispatchesSingle` but without
 * requiring that the `dispatchMarker` be the same as the dispatched ID.
 */
 function accumulateDispatches(id, ignoredDirection, event) {
  if (event && event.dispatchConfig.registrationName) {
    var registrationName = event.dispatchConfig.registrationName;
    var listener = getListener(id, registrationName);
    if (listener) {
      event._dispatchListeners =
        accumulateInto(event._dispatchListeners, listener);
      event._dispatchIDs = accumulateInto(event._dispatchIDs, id);
    }
  }
 }

 /**
 * Accumulates dispatches on an `SyntheticEvent`, but only for the
 * `dispatchMarker`.
 * @param {SyntheticEvent} event
 */
 function accumulateDirectDispatchesSingle(event) {
  if (event && event.dispatchConfig.registrationName) {
    accumulateDispatches(event.dispatchMarker, null, event);
  }
 }

 function accumulateTwoPhaseDispatches(events) {
  forEachAccumulated(events, accumulateTwoPhaseDispatchesSingle);
 }

 function accumulateEnterLeaveDispatches(leave, enter, fromID, toID) {
  EventPluginHub.injection.getInstanceHandle().traverseEnterLeave(
    fromID,
    toID,
    accumulateDispatches,
    leave,
    enter
  );
 }


 function accumulateDirectDispatches(events) {
  forEachAccumulated(events, accumulateDirectDispatchesSingle);
 }



 /**
 * A small set of propagation patterns, each of which will accept a small amount
 * of information, and generate a set of "dispatch ready event objects" - which
 * are sets of events that have already been annotated with a set of dispatched
 * listener functions/ids. The API is designed this way to discourage these
 * propagation strategies from actually executing the dispatches, since we
 * always want to collect the entire set of dispatches before executing event a
 * single one.
 *
 * @constructor EventPropagators
 */
 var EventPropagators = {
  accumulateTwoPhaseDispatches: accumulateTwoPhaseDispatches,
  accumulateDirectDispatches: accumulateDirectDispatches,
  accumulateEnterLeaveDispatches: accumulateEnterLeaveDispatches
 };

 module.exports = EventPropagators;

 },{"./EventConstants":16,"./EventPluginHub":18,"./accumulateInto":97,"./forEachAccumulated":112}],22:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ExecutionEnvironment
 */

 /*jslint evil: true */

 "use strict";

 var canUseDOM = !!(
  typeof window !== 'undefined' &&
  window.document &&
  window.document.createElement
 );

 /**
 * Simple, lightweight module assisting with the detection and context of
 * Worker. Helps avoid circular dependencies and allows code to reason about
 * whether or not they are in a Worker, even if they never include the main
 * `ReactWorker` dependency.
 */
 var ExecutionEnvironment = {

  canUseDOM: canUseDOM,

  canUseWorkers: typeof Worker !== 'undefined',

  canUseEventListeners:
    canUseDOM && !!(window.addEventListener || window.attachEvent),

  canUseViewport: canUseDOM && !!window.screen,

  isInWorker: !canUseDOM // For now, this is true - might change in the future.

 };

 module.exports = ExecutionEnvironment;

 },{}],23:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule HTMLDOMPropertyConfig
 */

 /*jslint bitwise: true*/

 "use strict";

 var DOMProperty = _dereq_("./DOMProperty");
 var ExecutionEnvironment = _dereq_("./ExecutionEnvironment");

 var MUST_USE_ATTRIBUTE = DOMProperty.injection.MUST_USE_ATTRIBUTE;
 var MUST_USE_PROPERTY = DOMProperty.injection.MUST_USE_PROPERTY;
 var HAS_BOOLEAN_VALUE = DOMProperty.injection.HAS_BOOLEAN_VALUE;
 var HAS_SIDE_EFFECTS = DOMProperty.injection.HAS_SIDE_EFFECTS;
 var HAS_NUMERIC_VALUE = DOMProperty.injection.HAS_NUMERIC_VALUE;
 var HAS_POSITIVE_NUMERIC_VALUE =
  DOMProperty.injection.HAS_POSITIVE_NUMERIC_VALUE;
 var HAS_OVERLOADED_BOOLEAN_VALUE =
  DOMProperty.injection.HAS_OVERLOADED_BOOLEAN_VALUE;

 var hasSVG;
 if (ExecutionEnvironment.canUseDOM) {
  var implementation = document.implementation;
  hasSVG = (
    implementation &&
    implementation.hasFeature &&
    implementation.hasFeature(
      'http://www.w3.org/TR/SVG11/feature#BasicStructure',
      '1.1'
    )
  );
 }


 var HTMLDOMPropertyConfig = {
  isCustomAttribute: RegExp.prototype.test.bind(
    /^(data|aria)-[a-z_][a-z\d_.\-]*$/
  ),
  Properties: {
    /**
     * Standard Properties
     */
    accept: null,
    acceptCharset: null,
    accessKey: null,
    action: null,
    allowFullScreen: MUST_USE_ATTRIBUTE | HAS_BOOLEAN_VALUE,
    allowTransparency: MUST_USE_ATTRIBUTE,
    alt: null,
    async: HAS_BOOLEAN_VALUE,
    autoComplete: null,
    // autoFocus is polyfilled/normalized by AutoFocusMixin
    // autoFocus: HAS_BOOLEAN_VALUE,
    autoPlay: HAS_BOOLEAN_VALUE,
    cellPadding: null,
    cellSpacing: null,
    charSet: MUST_USE_ATTRIBUTE,
    checked: MUST_USE_PROPERTY | HAS_BOOLEAN_VALUE,
    classID: MUST_USE_ATTRIBUTE,
    // To set className on SVG elements, it's necessary to use .setAttribute;
    // this works on HTML elements too in all browsers except IE8. Conveniently,
    // IE8 doesn't support SVG and so we can simply use the attribute in
    // browsers that support SVG and the property in browsers that don't,
    // regardless of whether the element is HTML or SVG.
    className: hasSVG ? MUST_USE_ATTRIBUTE : MUST_USE_PROPERTY,
    cols: MUST_USE_ATTRIBUTE | HAS_POSITIVE_NUMERIC_VALUE,
    colSpan: null,
    content: null,
    contentEditable: null,
    contextMenu: MUST_USE_ATTRIBUTE,
    controls: MUST_USE_PROPERTY | HAS_BOOLEAN_VALUE,
    coords: null,
    crossOrigin: null,
    data: null, // For `<object />` acts as `src`.
    dateTime: MUST_USE_ATTRIBUTE,
    defer: HAS_BOOLEAN_VALUE,
    dir: null,
    disabled: MUST_USE_ATTRIBUTE | HAS_BOOLEAN_VALUE,
    download: HAS_OVERLOADED_BOOLEAN_VALUE,
    draggable: null,
    encType: null,
    form: MUST_USE_ATTRIBUTE,
    formNoValidate: HAS_BOOLEAN_VALUE,
    frameBorder: MUST_USE_ATTRIBUTE,
    height: MUST_USE_ATTRIBUTE,
    hidden: MUST_USE_ATTRIBUTE | HAS_BOOLEAN_VALUE,
    href: null,
    hrefLang: null,
    htmlFor: null,
    httpEquiv: null,
    icon: null,
    id: MUST_USE_PROPERTY,
    label: null,
    lang: null,
    list: MUST_USE_ATTRIBUTE,
    loop: MUST_USE_PROPERTY | HAS_BOOLEAN_VALUE,
    manifest: MUST_USE_ATTRIBUTE,
    max: null,
    maxLength: MUST_USE_ATTRIBUTE,
    media: MUST_USE_ATTRIBUTE,
    mediaGroup: null,
    method: null,
    min: null,
    multiple: MUST_USE_PROPERTY | HAS_BOOLEAN_VALUE,
    muted: MUST_USE_PROPERTY | HAS_BOOLEAN_VALUE,
    name: null,
    noValidate: HAS_BOOLEAN_VALUE,
    open: null,
    pattern: null,
    placeholder: null,
    poster: null,
    preload: null,
    radioGroup: null,
    readOnly: MUST_USE_PROPERTY | HAS_BOOLEAN_VALUE,
    rel: null,
    required: HAS_BOOLEAN_VALUE,
    role: MUST_USE_ATTRIBUTE,
    rows: MUST_USE_ATTRIBUTE | HAS_POSITIVE_NUMERIC_VALUE,
    rowSpan: null,
    sandbox: null,
    scope: null,
    scrolling: null,
    seamless: MUST_USE_ATTRIBUTE | HAS_BOOLEAN_VALUE,
    selected: MUST_USE_PROPERTY | HAS_BOOLEAN_VALUE,
    shape: null,
    size: MUST_USE_ATTRIBUTE | HAS_POSITIVE_NUMERIC_VALUE,
    sizes: MUST_USE_ATTRIBUTE,
    span: HAS_POSITIVE_NUMERIC_VALUE,
    spellCheck: null,
    src: null,
    srcDoc: MUST_USE_PROPERTY,
    srcSet: MUST_USE_ATTRIBUTE,
    start: HAS_NUMERIC_VALUE,
    step: null,
    style: null,
    tabIndex: null,
    target: null,
    title: null,
    type: null,
    useMap: null,
    value: MUST_USE_PROPERTY | HAS_SIDE_EFFECTS,
    width: MUST_USE_ATTRIBUTE,
    wmode: MUST_USE_ATTRIBUTE,

    /**
     * Non-standard Properties
     */
    autoCapitalize: null, // Supported in Mobile Safari for keyboard hints
    autoCorrect: null, // Supported in Mobile Safari for keyboard hints
    itemProp: MUST_USE_ATTRIBUTE, // Microdata: http://schema.org/docs/gs.html
    itemScope: MUST_USE_ATTRIBUTE | HAS_BOOLEAN_VALUE, // Microdata: http://schema.org/docs/gs.html
    itemType: MUST_USE_ATTRIBUTE, // Microdata: http://schema.org/docs/gs.html
    property: null // Supports OG in meta tags
  },
  DOMAttributeNames: {
    acceptCharset: 'accept-charset',
    className: 'class',
    htmlFor: 'for',
    httpEquiv: 'http-equiv'
  },
  DOMPropertyNames: {
    autoCapitalize: 'autocapitalize',
    autoComplete: 'autocomplete',
    autoCorrect: 'autocorrect',
    autoFocus: 'autofocus',
    autoPlay: 'autoplay',
    encType: 'enctype',
    hrefLang: 'hreflang',
    radioGroup: 'radiogroup',
    spellCheck: 'spellcheck',
    srcDoc: 'srcdoc',
    srcSet: 'srcset'
  }
 };

 module.exports = HTMLDOMPropertyConfig;

 },{"./DOMProperty":11,"./ExecutionEnvironment":22}],24:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule LinkedValueUtils
 * @typechecks static-only
 */

 "use strict";

 var ReactPropTypes = _dereq_("./ReactPropTypes");

 var invariant = _dereq_("./invariant");

 var hasReadOnlyValue = {
  'button': true,
  'checkbox': true,
  'image': true,
  'hidden': true,
  'radio': true,
  'reset': true,
  'submit': true
 };

 function _assertSingleLink(input) {
  ("production" !== "development" ? invariant(
    input.props.checkedLink == null || input.props.valueLink == null,
    'Cannot provide a checkedLink and a valueLink. If you want to use ' +
    'checkedLink, you probably don\'t want to use valueLink and vice versa.'
  ) : invariant(input.props.checkedLink == null || input.props.valueLink == null));
 }
 function _assertValueLink(input) {
  _assertSingleLink(input);
  ("production" !== "development" ? invariant(
    input.props.value == null && input.props.onChange == null,
    'Cannot provide a valueLink and a value or onChange event. If you want ' +
    'to use value or onChange, you probably don\'t want to use valueLink.'
  ) : invariant(input.props.value == null && input.props.onChange == null));
 }

 function _assertCheckedLink(input) {
  _assertSingleLink(input);
  ("production" !== "development" ? invariant(
    input.props.checked == null && input.props.onChange == null,
    'Cannot provide a checkedLink and a checked property or onChange event. ' +
    'If you want to use checked or onChange, you probably don\'t want to ' +
    'use checkedLink'
  ) : invariant(input.props.checked == null && input.props.onChange == null));
 }

 /**
 * @param {SyntheticEvent} e change event to handle
 */
 function _handleLinkedValueChange(e) {
  /*jshint validthis:true */
  this.props.valueLink.requestChange(e.target.value);
 }

 /**
  * @param {SyntheticEvent} e change event to handle
  */
 function _handleLinkedCheckChange(e) {
  /*jshint validthis:true */
  this.props.checkedLink.requestChange(e.target.checked);
 }

 /**
 * Provide a linked `value` attribute for controlled forms. You should not use
 * this outside of the ReactDOM controlled form components.
 */
 var LinkedValueUtils = {
  Mixin: {
    propTypes: {
      value: function(props, propName, componentName) {
        if (!props[propName] ||
            hasReadOnlyValue[props.type] ||
            props.onChange ||
            props.readOnly ||
            props.disabled) {
          return;
        }
        return new Error(
          'You provided a `value` prop to a form field without an ' +
          '`onChange` handler. This will render a read-only field. If ' +
          'the field should be mutable use `defaultValue`. Otherwise, ' +
          'set either `onChange` or `readOnly`.'
        );
      },
      checked: function(props, propName, componentName) {
        if (!props[propName] ||
            props.onChange ||
            props.readOnly ||
            props.disabled) {
          return;
        }
        return new Error(
          'You provided a `checked` prop to a form field without an ' +
          '`onChange` handler. This will render a read-only field. If ' +
          'the field should be mutable use `defaultChecked`. Otherwise, ' +
          'set either `onChange` or `readOnly`.'
        );
      },
      onChange: ReactPropTypes.func
    }
  },

  /**
   * @param {ReactComponent} input Form component
   * @return {*} current value of the input either from value prop or link.
   */
  getValue: function(input) {
    if (input.props.valueLink) {
      _assertValueLink(input);
      return input.props.valueLink.value;
    }
    return input.props.value;
  },

  /**
   * @param {ReactComponent} input Form component
   * @return {*} current checked status of the input either from checked prop
   *             or link.
   */
  getChecked: function(input) {
    if (input.props.checkedLink) {
      _assertCheckedLink(input);
      return input.props.checkedLink.value;
    }
    return input.props.checked;
  },

  /**
   * @param {ReactComponent} input Form component
   * @return {function} change callback either from onChange prop or link.
   */
  getOnChange: function(input) {
    if (input.props.valueLink) {
      _assertValueLink(input);
      return _handleLinkedValueChange;
    } else if (input.props.checkedLink) {
      _assertCheckedLink(input);
      return _handleLinkedCheckChange;
    }
    return input.props.onChange;
  }
 };

 module.exports = LinkedValueUtils;

 },{"./ReactPropTypes":72,"./invariant":126}],25:[function(_dereq_,module,exports){
 /**
 * Copyright 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule LocalEventTrapMixin
 */

 "use strict";

 var ReactBrowserEventEmitter = _dereq_("./ReactBrowserEventEmitter");

 var accumulateInto = _dereq_("./accumulateInto");
 var forEachAccumulated = _dereq_("./forEachAccumulated");
 var invariant = _dereq_("./invariant");

 function remove(event) {
  event.remove();
 }

 var LocalEventTrapMixin = {
  trapBubbledEvent:function(topLevelType, handlerBaseName) {
    ("production" !== "development" ? invariant(this.isMounted(), 'Must be mounted to trap events') : invariant(this.isMounted()));
    var listener = ReactBrowserEventEmitter.trapBubbledEvent(
      topLevelType,
      handlerBaseName,
      this.getDOMNode()
    );
    this._localEventListeners =
      accumulateInto(this._localEventListeners, listener);
  },

  // trapCapturedEvent would look nearly identical. We don't implement that
  // method because it isn't currently needed.

  componentWillUnmount:function() {
    if (this._localEventListeners) {
      forEachAccumulated(this._localEventListeners, remove);
    }
  }
 };

 module.exports = LocalEventTrapMixin;

 },{"./ReactBrowserEventEmitter":30,"./accumulateInto":97,"./forEachAccumulated":112,"./invariant":126}],26:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule MobileSafariClickEventPlugin
 * @typechecks static-only
 */

 "use strict";

 var EventConstants = _dereq_("./EventConstants");

 var emptyFunction = _dereq_("./emptyFunction");

 var topLevelTypes = EventConstants.topLevelTypes;

 /**
 * Mobile Safari does not fire properly bubble click events on non-interactive
 * elements, which means delegated click listeners do not fire. The workaround
 * for this bug involves attaching an empty click listener on the target node.
 *
 * This particular plugin works around the bug by attaching an empty click
 * listener on `touchstart` (which does fire on every element).
 */
 var MobileSafariClickEventPlugin = {

  eventTypes: null,

  /**
   * @param {string} topLevelType Record from `EventConstants`.
   * @param {DOMEventTarget} topLevelTarget The listening component root node.
   * @param {string} topLevelTargetID ID of `topLevelTarget`.
   * @param {object} nativeEvent Native browser event.
   * @return {*} An accumulation of synthetic events.
   * @see {EventPluginHub.extractEvents}
   */
  extractEvents: function(
      topLevelType,
      topLevelTarget,
      topLevelTargetID,
      nativeEvent) {
    if (topLevelType === topLevelTypes.topTouchStart) {
      var target = nativeEvent.target;
      if (target && !target.onclick) {
        target.onclick = emptyFunction;
      }
    }
  }

 };

 module.exports = MobileSafariClickEventPlugin;

 },{"./EventConstants":16,"./emptyFunction":107}],27:[function(_dereq_,module,exports){
 /**
 * Copyright 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule Object.assign
 */

 // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.assign

 function assign(target, sources) {
  if (target == null) {
    throw new TypeError('Object.assign target cannot be null or undefined');
  }

  var to = Object(target);
  var hasOwnProperty = Object.prototype.hasOwnProperty;

  for (var nextIndex = 1; nextIndex < arguments.length; nextIndex++) {
    var nextSource = arguments[nextIndex];
    if (nextSource == null) {
      continue;
    }

    var from = Object(nextSource);

    // We don't currently support accessors nor proxies. Therefore this
    // copy cannot throw. If we ever supported this then we must handle
    // exceptions and side-effects. We don't support symbols so they won't
    // be transferred.

    for (var key in from) {
      if (hasOwnProperty.call(from, key)) {
        to[key] = from[key];
      }
    }
  }

  return to;
 };

 module.exports = assign;

 },{}],28:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule PooledClass
 */

 "use strict";

 var invariant = _dereq_("./invariant");

 /**
 * Static poolers. Several custom versions for each potential number of
 * arguments. A completely generic pooler is easy to implement, but would
 * require accessing the `arguments` object. In each of these, `this` refers to
 * the Class itself, not an instance. If any others are needed, simply add them
 * here, or in their own files.
 */
 var oneArgumentPooler = function(copyFieldsFrom) {
  var Klass = this;
  if (Klass.instancePool.length) {
    var instance = Klass.instancePool.pop();
    Klass.call(instance, copyFieldsFrom);
    return instance;
  } else {
    return new Klass(copyFieldsFrom);
  }
 };

 var twoArgumentPooler = function(a1, a2) {
  var Klass = this;
  if (Klass.instancePool.length) {
    var instance = Klass.instancePool.pop();
    Klass.call(instance, a1, a2);
    return instance;
  } else {
    return new Klass(a1, a2);
  }
 };

 var threeArgumentPooler = function(a1, a2, a3) {
  var Klass = this;
  if (Klass.instancePool.length) {
    var instance = Klass.instancePool.pop();
    Klass.call(instance, a1, a2, a3);
    return instance;
  } else {
    return new Klass(a1, a2, a3);
  }
 };

 var fiveArgumentPooler = function(a1, a2, a3, a4, a5) {
  var Klass = this;
  if (Klass.instancePool.length) {
    var instance = Klass.instancePool.pop();
    Klass.call(instance, a1, a2, a3, a4, a5);
    return instance;
  } else {
    return new Klass(a1, a2, a3, a4, a5);
  }
 };

 var standardReleaser = function(instance) {
  var Klass = this;
  ("production" !== "development" ? invariant(
    instance instanceof Klass,
    'Trying to release an instance into a pool of a different type.'
  ) : invariant(instance instanceof Klass));
  if (instance.destructor) {
    instance.destructor();
  }
  if (Klass.instancePool.length < Klass.poolSize) {
    Klass.instancePool.push(instance);
  }
 };

 var DEFAULT_POOL_SIZE = 10;
 var DEFAULT_POOLER = oneArgumentPooler;

 /**
 * Augments `CopyConstructor` to be a poolable class, augmenting only the class
 * itself (statically) not adding any prototypical fields. Any CopyConstructor
 * you give this may have a `poolSize` property, and will look for a
 * prototypical `destructor` on instances (optional).
 *
 * @param {Function} CopyConstructor Constructor that can be used to reset.
 * @param {Function} pooler Customizable pooler.
 */
 var addPoolingTo = function(CopyConstructor, pooler) {
  var NewKlass = CopyConstructor;
  NewKlass.instancePool = [];
  NewKlass.getPooled = pooler || DEFAULT_POOLER;
  if (!NewKlass.poolSize) {
    NewKlass.poolSize = DEFAULT_POOL_SIZE;
  }
  NewKlass.release = standardReleaser;
  return NewKlass;
 };

 var PooledClass = {
  addPoolingTo: addPoolingTo,
  oneArgumentPooler: oneArgumentPooler,
  twoArgumentPooler: twoArgumentPooler,
  threeArgumentPooler: threeArgumentPooler,
  fiveArgumentPooler: fiveArgumentPooler
 };

 module.exports = PooledClass;

 },{"./invariant":126}],29:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactBrowserComponentMixin
 */

 "use strict";

 var ReactEmptyComponent = _dereq_("./ReactEmptyComponent");
 var ReactMount = _dereq_("./ReactMount");

 var invariant = _dereq_("./invariant");

 var ReactBrowserComponentMixin = {
  /**
   * Returns the DOM node rendered by this component.
   *
   * @return {DOMElement} The root node of this component.
   * @final
   * @protected
   */
  getDOMNode: function() {
    ("production" !== "development" ? invariant(
      this.isMounted(),
      'getDOMNode(): A component must be mounted to have a DOM node.'
    ) : invariant(this.isMounted()));
    if (ReactEmptyComponent.isNullComponentID(this._rootNodeID)) {
      return null;
    }
    return ReactMount.getNode(this._rootNodeID);
  }
 };

 module.exports = ReactBrowserComponentMixin;

 },{"./ReactEmptyComponent":54,"./ReactMount":63,"./invariant":126}],30:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactBrowserEventEmitter
 * @typechecks static-only
 */

 "use strict";

 var EventConstants = _dereq_("./EventConstants");
 var EventPluginHub = _dereq_("./EventPluginHub");
 var EventPluginRegistry = _dereq_("./EventPluginRegistry");
 var ReactEventEmitterMixin = _dereq_("./ReactEventEmitterMixin");
 var ViewportMetrics = _dereq_("./ViewportMetrics");

 var assign = _dereq_("./Object.assign");
 var isEventSupported = _dereq_("./isEventSupported");

 /**
 * Summary of `ReactBrowserEventEmitter` event handling:
 *
 *  - Top-level delegation is used to trap most native browser events. This
 *    may only occur in the main thread and is the responsibility of
 *    ReactEventListener, which is injected and can therefore support pluggable
 *    event sources. This is the only work that occurs in the main thread.
 *
 *  - We normalize and de-duplicate events to account for browser quirks. This
 *    may be done in the worker thread.
 *
 *  - Forward these native events (with the associated top-level type used to
 *    trap it) to `EventPluginHub`, which in turn will ask plugins if they want
 *    to extract any synthetic events.
 *
 *  - The `EventPluginHub` will then process each event by annotating them with
 *    "dispatches", a sequence of listeners and IDs that care about that event.
 *
 *  - The `EventPluginHub` then dispatches the events.
 *
 * Overview of React and the event system:
 *
 * +------------+    .
 * |    DOM     |    .
 * +------------+    .
 *       |           .
 *       v           .
 * +------------+    .
 * | ReactEvent |    .
 * |  Listener  |    .
 * +------------+    .                         +-----------+
 *       |           .               +--------+|SimpleEvent|
 *       |           .               |         |Plugin     |
 * +-----|------+    .               v         +-----------+
 * |     |      |    .    +--------------+                    +------------+
 * |     +-----------.--->|EventPluginHub|                    |    Event   |
 * |            |    .    |              |     +-----------+  | Propagators|
 * | ReactEvent |    .    |              |     |TapEvent   |  |------------|
 * |  Emitter   |    .    |              |<---+|Plugin     |  |other plugin|
 * |            |    .    |              |     +-----------+  |  utilities |
 * |     +-----------.--->|              |                    +------------+
 * |     |      |    .    +--------------+
 * +-----|------+    .                ^        +-----------+
 *       |           .                |        |Enter/Leave|
 *       +           .                +-------+|Plugin     |
 * +-------------+   .                         +-----------+
 * | application |   .
 * |-------------|   .
 * |             |   .
 * |             |   .
 * +-------------+   .
 *                   .
 *    React Core     .  General Purpose Event Plugin System
 */

 var alreadyListeningTo = {};
 var isMonitoringScrollValue = false;
 var reactTopListenersCounter = 0;

 // For events like 'submit' which don't consistently bubble (which we trap at a
 // lower node than `document`), binding at `document` would cause duplicate
 // events so we don't include them here
 var topEventMapping = {
  topBlur: 'blur',
  topChange: 'change',
  topClick: 'click',
  topCompositionEnd: 'compositionend',
  topCompositionStart: 'compositionstart',
  topCompositionUpdate: 'compositionupdate',
  topContextMenu: 'contextmenu',
  topCopy: 'copy',
  topCut: 'cut',
  topDoubleClick: 'dblclick',
  topDrag: 'drag',
  topDragEnd: 'dragend',
  topDragEnter: 'dragenter',
  topDragExit: 'dragexit',
  topDragLeave: 'dragleave',
  topDragOver: 'dragover',
  topDragStart: 'dragstart',
  topDrop: 'drop',
  topFocus: 'focus',
  topInput: 'input',
  topKeyDown: 'keydown',
  topKeyPress: 'keypress',
  topKeyUp: 'keyup',
  topMouseDown: 'mousedown',
  topMouseMove: 'mousemove',
  topMouseOut: 'mouseout',
  topMouseOver: 'mouseover',
  topMouseUp: 'mouseup',
  topPaste: 'paste',
  topScroll: 'scroll',
  topSelectionChange: 'selectionchange',
  topTextInput: 'textInput',
  topTouchCancel: 'touchcancel',
  topTouchEnd: 'touchend',
  topTouchMove: 'touchmove',
  topTouchStart: 'touchstart',
  topWheel: 'wheel'
 };

 /**
 * To ensure no conflicts with other potential React instances on the page
 */
 var topListenersIDKey = "_reactListenersID" + String(Math.random()).slice(2);

 function getListeningForDocument(mountAt) {
  // In IE8, `mountAt` is a host object and doesn't have `hasOwnProperty`
  // directly.
  if (!Object.prototype.hasOwnProperty.call(mountAt, topListenersIDKey)) {
    mountAt[topListenersIDKey] = reactTopListenersCounter++;
    alreadyListeningTo[mountAt[topListenersIDKey]] = {};
  }
  return alreadyListeningTo[mountAt[topListenersIDKey]];
 }

 /**
 * `ReactBrowserEventEmitter` is used to attach top-level event listeners. For
 * example:
 *
 *   ReactBrowserEventEmitter.putListener('myID', 'onClick', myFunction);
 *
 * This would allocate a "registration" of `('onClick', myFunction)` on 'myID'.
 *
 * @internal
 */
 var ReactBrowserEventEmitter = assign({}, ReactEventEmitterMixin, {

  /**
   * Injectable event backend
   */
  ReactEventListener: null,

  injection: {
    /**
     * @param {object} ReactEventListener
     */
    injectReactEventListener: function(ReactEventListener) {
      ReactEventListener.setHandleTopLevel(
        ReactBrowserEventEmitter.handleTopLevel
      );
      ReactBrowserEventEmitter.ReactEventListener = ReactEventListener;
    }
  },

  /**
   * Sets whether or not any created callbacks should be enabled.
   *
   * @param {boolean} enabled True if callbacks should be enabled.
   */
  setEnabled: function(enabled) {
    if (ReactBrowserEventEmitter.ReactEventListener) {
      ReactBrowserEventEmitter.ReactEventListener.setEnabled(enabled);
    }
  },

  /**
   * @return {boolean} True if callbacks are enabled.
   */
  isEnabled: function() {
    return !!(
      ReactBrowserEventEmitter.ReactEventListener &&
      ReactBrowserEventEmitter.ReactEventListener.isEnabled()
    );
  },

  /**
   * We listen for bubbled touch events on the document object.
   *
   * Firefox v8.01 (and possibly others) exhibited strange behavior when
   * mounting `onmousemove` events at some node that was not the document
   * element. The symptoms were that if your mouse is not moving over something
   * contained within that mount point (for example on the background) the
   * top-level listeners for `onmousemove` won't be called. However, if you
   * register the `mousemove` on the document object, then it will of course
   * catch all `mousemove`s. This along with iOS quirks, justifies restricting
   * top-level listeners to the document object only, at least for these
   * movement types of events and possibly all events.
   *
   * @see http://www.quirksmode.org/blog/archives/2010/09/click_event_del.html
   *
   * Also, `keyup`/`keypress`/`keydown` do not bubble to the window on IE, but
   * they bubble to document.
   *
   * @param {string} registrationName Name of listener (e.g. `onClick`).
   * @param {object} contentDocumentHandle Document which owns the container
   */
  listenTo: function(registrationName, contentDocumentHandle) {
    var mountAt = contentDocumentHandle;
    var isListening = getListeningForDocument(mountAt);
    var dependencies = EventPluginRegistry.
      registrationNameDependencies[registrationName];

    var topLevelTypes = EventConstants.topLevelTypes;
    for (var i = 0, l = dependencies.length; i < l; i++) {
      var dependency = dependencies[i];
      if (!(
            isListening.hasOwnProperty(dependency) &&
            isListening[dependency]
          )) {
        if (dependency === topLevelTypes.topWheel) {
          if (isEventSupported('wheel')) {
            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent(
              topLevelTypes.topWheel,
              'wheel',
              mountAt
            );
          } else if (isEventSupported('mousewheel')) {
            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent(
              topLevelTypes.topWheel,
              'mousewheel',
              mountAt
            );
          } else {
            // Firefox needs to capture a different mouse scroll event.
            // @see http://www.quirksmode.org/dom/events/tests/scroll.html
            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent(
              topLevelTypes.topWheel,
              'DOMMouseScroll',
              mountAt
            );
          }
        } else if (dependency === topLevelTypes.topScroll) {

          if (isEventSupported('scroll', true)) {
            ReactBrowserEventEmitter.ReactEventListener.trapCapturedEvent(
              topLevelTypes.topScroll,
              'scroll',
              mountAt
            );
          } else {
            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent(
              topLevelTypes.topScroll,
              'scroll',
              ReactBrowserEventEmitter.ReactEventListener.WINDOW_HANDLE
            );
          }
        } else if (dependency === topLevelTypes.topFocus ||
            dependency === topLevelTypes.topBlur) {

          if (isEventSupported('focus', true)) {
            ReactBrowserEventEmitter.ReactEventListener.trapCapturedEvent(
              topLevelTypes.topFocus,
              'focus',
              mountAt
            );
            ReactBrowserEventEmitter.ReactEventListener.trapCapturedEvent(
              topLevelTypes.topBlur,
              'blur',
              mountAt
            );
          } else if (isEventSupported('focusin')) {
            // IE has `focusin` and `focusout` events which bubble.
            // @see http://www.quirksmode.org/blog/archives/2008/04/delegating_the.html
            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent(
              topLevelTypes.topFocus,
              'focusin',
              mountAt
            );
            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent(
              topLevelTypes.topBlur,
              'focusout',
              mountAt
            );
          }

          // to make sure blur and focus event listeners are only attached once
          isListening[topLevelTypes.topBlur] = true;
          isListening[topLevelTypes.topFocus] = true;
        } else if (topEventMapping.hasOwnProperty(dependency)) {
          ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent(
            dependency,
            topEventMapping[dependency],
            mountAt
          );
        }

        isListening[dependency] = true;
      }
    }
  },

  trapBubbledEvent: function(topLevelType, handlerBaseName, handle) {
    return ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent(
      topLevelType,
      handlerBaseName,
      handle
    );
  },

  trapCapturedEvent: function(topLevelType, handlerBaseName, handle) {
    return ReactBrowserEventEmitter.ReactEventListener.trapCapturedEvent(
      topLevelType,
      handlerBaseName,
      handle
    );
  },

  /**
   * Listens to window scroll and resize events. We cache scroll values so that
   * application code can access them without triggering reflows.
   *
   * NOTE: Scroll events do not bubble.
   *
   * @see http://www.quirksmode.org/dom/events/scroll.html
   */
  ensureScrollValueMonitoring: function(){
    if (!isMonitoringScrollValue) {
      var refresh = ViewportMetrics.refreshScrollValues;
      ReactBrowserEventEmitter.ReactEventListener.monitorScrollValue(refresh);
      isMonitoringScrollValue = true;
    }
  },

  eventNameDispatchConfigs: EventPluginHub.eventNameDispatchConfigs,

  registrationNameModules: EventPluginHub.registrationNameModules,

  putListener: EventPluginHub.putListener,

  getListener: EventPluginHub.getListener,

  deleteListener: EventPluginHub.deleteListener,

  deleteAllListeners: EventPluginHub.deleteAllListeners

 });

 module.exports = ReactBrowserEventEmitter;

 },{"./EventConstants":16,"./EventPluginHub":18,"./EventPluginRegistry":19,"./Object.assign":27,"./ReactEventEmitterMixin":56,"./ViewportMetrics":96,"./isEventSupported":127}],31:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactChildren
 */

 "use strict";

 var PooledClass = _dereq_("./PooledClass");

 var traverseAllChildren = _dereq_("./traverseAllChildren");
 var warning = _dereq_("./warning");

 var twoArgumentPooler = PooledClass.twoArgumentPooler;
 var threeArgumentPooler = PooledClass.threeArgumentPooler;

 /**
 * PooledClass representing the bookkeeping associated with performing a child
 * traversal. Allows avoiding binding callbacks.
 *
 * @constructor ForEachBookKeeping
 * @param {!function} forEachFunction Function to perform traversal with.
 * @param {?*} forEachContext Context to perform context with.
 */
 function ForEachBookKeeping(forEachFunction, forEachContext) {
  this.forEachFunction = forEachFunction;
  this.forEachContext = forEachContext;
 }
 PooledClass.addPoolingTo(ForEachBookKeeping, twoArgumentPooler);

 function forEachSingleChild(traverseContext, child, name, i) {
  var forEachBookKeeping = traverseContext;
  forEachBookKeeping.forEachFunction.call(
    forEachBookKeeping.forEachContext, child, i);
 }

 /**
 * Iterates through children that are typically specified as `props.children`.
 *
 * The provided forEachFunc(child, index) will be called for each
 * leaf child.
 *
 * @param {?*} children Children tree container.
 * @param {function(*, int)} forEachFunc.
 * @param {*} forEachContext Context for forEachContext.
 */
 function forEachChildren(children, forEachFunc, forEachContext) {
  if (children == null) {
    return children;
  }

  var traverseContext =
    ForEachBookKeeping.getPooled(forEachFunc, forEachContext);
  traverseAllChildren(children, forEachSingleChild, traverseContext);
  ForEachBookKeeping.release(traverseContext);
 }

 /**
 * PooledClass representing the bookkeeping associated with performing a child
 * mapping. Allows avoiding binding callbacks.
 *
 * @constructor MapBookKeeping
 * @param {!*} mapResult Object containing the ordered map of results.
 * @param {!function} mapFunction Function to perform mapping with.
 * @param {?*} mapContext Context to perform mapping with.
 */
 function MapBookKeeping(mapResult, mapFunction, mapContext) {
  this.mapResult = mapResult;
  this.mapFunction = mapFunction;
  this.mapContext = mapContext;
 }
 PooledClass.addPoolingTo(MapBookKeeping, threeArgumentPooler);

 function mapSingleChildIntoContext(traverseContext, child, name, i) {
  var mapBookKeeping = traverseContext;
  var mapResult = mapBookKeeping.mapResult;

  var keyUnique = !mapResult.hasOwnProperty(name);
  ("production" !== "development" ? warning(
    keyUnique,
    'ReactChildren.map(...): Encountered two children with the same key, ' +
    '`%s`. Child keys must be unique; when two children share a key, only ' +
    'the first child will be used.',
    name
  ) : null);

  if (keyUnique) {
    var mappedChild =
      mapBookKeeping.mapFunction.call(mapBookKeeping.mapContext, child, i);
    mapResult[name] = mappedChild;
  }
 }

 /**
 * Maps children that are typically specified as `props.children`.
 *
 * The provided mapFunction(child, key, index) will be called for each
 * leaf child.
 *
 * TODO: This may likely break any calls to `ReactChildren.map` that were
 * previously relying on the fact that we guarded against null children.
 *
 * @param {?*} children Children tree container.
 * @param {function(*, int)} mapFunction.
 * @param {*} mapContext Context for mapFunction.
 * @return {object} Object containing the ordered map of results.
 */
 function mapChildren(children, func, context) {
  if (children == null) {
    return children;
  }

  var mapResult = {};
  var traverseContext = MapBookKeeping.getPooled(mapResult, func, context);
  traverseAllChildren(children, mapSingleChildIntoContext, traverseContext);
  MapBookKeeping.release(traverseContext);
  return mapResult;
 }

 function forEachSingleChildDummy(traverseContext, child, name, i) {
  return null;
 }

 /**
 * Count the number of children that are typically specified as
 * `props.children`.
 *
 * @param {?*} children Children tree container.
 * @return {number} The number of children.
 */
 function countChildren(children, context) {
  return traverseAllChildren(children, forEachSingleChildDummy, null);
 }

 var ReactChildren = {
  forEach: forEachChildren,
  map: mapChildren,
  count: countChildren
 };

 module.exports = ReactChildren;

 },{"./PooledClass":28,"./traverseAllChildren":144,"./warning":145}],32:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactComponent
 */

 "use strict";

 var ReactElement = _dereq_("./ReactElement");
 var ReactOwner = _dereq_("./ReactOwner");
 var ReactUpdates = _dereq_("./ReactUpdates");

 var assign = _dereq_("./Object.assign");
 var invariant = _dereq_("./invariant");
 var keyMirror = _dereq_("./keyMirror");

 /**
 * Every React component is in one of these life cycles.
 */
 var ComponentLifeCycle = keyMirror({
  /**
   * Mounted components have a DOM node representation and are capable of
   * receiving new props.
   */
  MOUNTED: null,
  /**
   * Unmounted components are inactive and cannot receive new props.
   */
  UNMOUNTED: null
 });

 var injected = false;

 /**
 * Optionally injectable environment dependent cleanup hook. (server vs.
 * browser etc). Example: A browser system caches DOM nodes based on component
 * ID and must remove that cache entry when this instance is unmounted.
 *
 * @private
 */
 var unmountIDFromEnvironment = null;

 /**
 * The "image" of a component tree, is the platform specific (typically
 * serialized) data that represents a tree of lower level UI building blocks.
 * On the web, this "image" is HTML markup which describes a construction of
 * low level `div` and `span` nodes. Other platforms may have different
 * encoding of this "image". This must be injected.
 *
 * @private
 */
 var mountImageIntoNode = null;

 /**
 * Components are the basic units of composition in React.
 *
 * Every component accepts a set of keyed input parameters known as "props" that
 * are initialized by the constructor. Once a component is mounted, the props
 * can be mutated using `setProps` or `replaceProps`.
 *
 * Every component is capable of the following operations:
 *
 *   `mountComponent`
 *     Initializes the component, renders markup, and registers event listeners.
 *
 *   `receiveComponent`
 *     Updates the rendered DOM nodes to match the given component.
 *
 *   `unmountComponent`
 *     Releases any resources allocated by this component.
 *
 * Components can also be "owned" by other components. Being owned by another
 * component means being constructed by that component. This is different from
 * being the child of a component, which means having a DOM representation that
 * is a child of the DOM representation of that component.
 *
 * @class ReactComponent
 */
 var ReactComponent = {

  injection: {
    injectEnvironment: function(ReactComponentEnvironment) {
      ("production" !== "development" ? invariant(
        !injected,
        'ReactComponent: injectEnvironment() can only be called once.'
      ) : invariant(!injected));
      mountImageIntoNode = ReactComponentEnvironment.mountImageIntoNode;
      unmountIDFromEnvironment =
        ReactComponentEnvironment.unmountIDFromEnvironment;
      ReactComponent.BackendIDOperations =
        ReactComponentEnvironment.BackendIDOperations;
      injected = true;
    }
  },

  /**
   * @internal
   */
  LifeCycle: ComponentLifeCycle,

  /**
   * Injected module that provides ability to mutate individual properties.
   * Injected into the base class because many different subclasses need access
   * to this.
   *
   * @internal
   */
  BackendIDOperations: null,

  /**
   * Base functionality for every ReactComponent constructor. Mixed into the
   * `ReactComponent` prototype, but exposed statically for easy access.
   *
   * @lends {ReactComponent.prototype}
   */
  Mixin: {

    /**
     * Checks whether or not this component is mounted.
     *
     * @return {boolean} True if mounted, false otherwise.
     * @final
     * @protected
     */
    isMounted: function() {
      return this._lifeCycleState === ComponentLifeCycle.MOUNTED;
    },

    /**
     * Sets a subset of the props.
     *
     * @param {object} partialProps Subset of the next props.
     * @param {?function} callback Called after props are updated.
     * @final
     * @public
     */
    setProps: function(partialProps, callback) {
      // Merge with the pending element if it exists, otherwise with existing
      // element props.
      var element = this._pendingElement || this._currentElement;
      this.replaceProps(
        assign({}, element.props, partialProps),
        callback
      );
    },

    /**
     * Replaces all of the props.
     *
     * @param {object} props New props.
     * @param {?function} callback Called after props are updated.
     * @final
     * @public
     */
    replaceProps: function(props, callback) {
      ("production" !== "development" ? invariant(
        this.isMounted(),
        'replaceProps(...): Can only update a mounted component.'
      ) : invariant(this.isMounted()));
      ("production" !== "development" ? invariant(
        this._mountDepth === 0,
        'replaceProps(...): You called `setProps` or `replaceProps` on a ' +
        'component with a parent. This is an anti-pattern since props will ' +
        'get reactively updated when rendered. Instead, change the owner\'s ' +
        '`render` method to pass the correct value as props to the component ' +
        'where it is created.'
      ) : invariant(this._mountDepth === 0));
      // This is a deoptimized path. We optimize for always having a element.
      // This creates an extra internal element.
      this._pendingElement = ReactElement.cloneAndReplaceProps(
        this._pendingElement || this._currentElement,
        props
      );
      ReactUpdates.enqueueUpdate(this, callback);
    },

    /**
     * Schedule a partial update to the props. Only used for internal testing.
     *
     * @param {object} partialProps Subset of the next props.
     * @param {?function} callback Called after props are updated.
     * @final
     * @internal
     */
    _setPropsInternal: function(partialProps, callback) {
      // This is a deoptimized path. We optimize for always having a element.
      // This creates an extra internal element.
      var element = this._pendingElement || this._currentElement;
      this._pendingElement = ReactElement.cloneAndReplaceProps(
        element,
        assign({}, element.props, partialProps)
      );
      ReactUpdates.enqueueUpdate(this, callback);
    },

    /**
     * Base constructor for all React components.
     *
     * Subclasses that override this method should make sure to invoke
     * `ReactComponent.Mixin.construct.call(this, ...)`.
     *
     * @param {ReactElement} element
     * @internal
     */
    construct: function(element) {
      // This is the public exposed props object after it has been processed
      // with default props. The element's props represents the true internal
      // state of the props.
      this.props = element.props;
      // Record the component responsible for creating this component.
      // This is accessible through the element but we maintain an extra
      // field for compatibility with devtools and as a way to make an
      // incremental update. TODO: Consider deprecating this field.
      this._owner = element._owner;

      // All components start unmounted.
      this._lifeCycleState = ComponentLifeCycle.UNMOUNTED;

      // See ReactUpdates.
      this._pendingCallbacks = null;

      // We keep the old element and a reference to the pending element
      // to track updates.
      this._currentElement = element;
      this._pendingElement = null;
    },

    /**
     * Initializes the component, renders markup, and registers event listeners.
     *
     * NOTE: This does not insert any nodes into the DOM.
     *
     * Subclasses that override this method should make sure to invoke
     * `ReactComponent.Mixin.mountComponent.call(this, ...)`.
     *
     * @param {string} rootID DOM ID of the root node.
     * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction
     * @param {number} mountDepth number of components in the owner hierarchy.
     * @return {?string} Rendered markup to be inserted into the DOM.
     * @internal
     */
    mountComponent: function(rootID, transaction, mountDepth) {
      ("production" !== "development" ? invariant(
        !this.isMounted(),
        'mountComponent(%s, ...): Can only mount an unmounted component. ' +
        'Make sure to avoid storing components between renders or reusing a ' +
        'single component instance in multiple places.',
        rootID
      ) : invariant(!this.isMounted()));
      var ref = this._currentElement.ref;
      if (ref != null) {
        var owner = this._currentElement._owner;
        ReactOwner.addComponentAsRefTo(this, ref, owner);
      }
      this._rootNodeID = rootID;
      this._lifeCycleState = ComponentLifeCycle.MOUNTED;
      this._mountDepth = mountDepth;
      // Effectively: return '';
    },

    /**
     * Releases any resources allocated by `mountComponent`.
     *
     * NOTE: This does not remove any nodes from the DOM.
     *
     * Subclasses that override this method should make sure to invoke
     * `ReactComponent.Mixin.unmountComponent.call(this)`.
     *
     * @internal
     */
    unmountComponent: function() {
      ("production" !== "development" ? invariant(
        this.isMounted(),
        'unmountComponent(): Can only unmount a mounted component.'
      ) : invariant(this.isMounted()));
      var ref = this._currentElement.ref;
      if (ref != null) {
        ReactOwner.removeComponentAsRefFrom(this, ref, this._owner);
      }
      unmountIDFromEnvironment(this._rootNodeID);
      this._rootNodeID = null;
      this._lifeCycleState = ComponentLifeCycle.UNMOUNTED;
    },

    /**
     * Given a new instance of this component, updates the rendered DOM nodes
     * as if that instance was rendered instead.
     *
     * Subclasses that override this method should make sure to invoke
     * `ReactComponent.Mixin.receiveComponent.call(this, ...)`.
     *
     * @param {object} nextComponent Next set of properties.
     * @param {ReactReconcileTransaction} transaction
     * @internal
     */
    receiveComponent: function(nextElement, transaction) {
      ("production" !== "development" ? invariant(
        this.isMounted(),
        'receiveComponent(...): Can only update a mounted component.'
      ) : invariant(this.isMounted()));
      this._pendingElement = nextElement;
      this.performUpdateIfNecessary(transaction);
    },

    /**
     * If `_pendingElement` is set, update the component.
     *
     * @param {ReactReconcileTransaction} transaction
     * @internal
     */
    performUpdateIfNecessary: function(transaction) {
      if (this._pendingElement == null) {
        return;
      }
      var prevElement = this._currentElement;
      var nextElement = this._pendingElement;
      this._currentElement = nextElement;
      this.props = nextElement.props;
      this._owner = nextElement._owner;
      this._pendingElement = null;
      this.updateComponent(transaction, prevElement);
    },

    /**
     * Updates the component's currently mounted representation.
     *
     * @param {ReactReconcileTransaction} transaction
     * @param {object} prevElement
     * @internal
     */
    updateComponent: function(transaction, prevElement) {
      var nextElement = this._currentElement;

      // If either the owner or a `ref` has changed, make sure the newest owner
      // has stored a reference to `this`, and the previous owner (if different)
      // has forgotten the reference to `this`. We use the element instead
      // of the public this.props because the post processing cannot determine
      // a ref. The ref conceptually lives on the element.

      // TODO: Should this even be possible? The owner cannot change because
      // it's forbidden by shouldUpdateReactComponent. The ref can change
      // if you swap the keys of but not the refs. Reconsider where this check
      // is made. It probably belongs where the key checking and
      // instantiateReactComponent is done.

      if (nextElement._owner !== prevElement._owner ||
          nextElement.ref !== prevElement.ref) {
        if (prevElement.ref != null) {
          ReactOwner.removeComponentAsRefFrom(
            this, prevElement.ref, prevElement._owner
          );
        }
        // Correct, even if the owner is the same, and only the ref has changed.
        if (nextElement.ref != null) {
          ReactOwner.addComponentAsRefTo(
            this,
            nextElement.ref,
            nextElement._owner
          );
        }
      }
    },

    /**
     * Mounts this component and inserts it into the DOM.
     *
     * @param {string} rootID DOM ID of the root node.
     * @param {DOMElement} container DOM element to mount into.
     * @param {boolean} shouldReuseMarkup If true, do not insert markup
     * @final
     * @internal
     * @see {ReactMount.render}
     */
    mountComponentIntoNode: function(rootID, container, shouldReuseMarkup) {
      var transaction = ReactUpdates.ReactReconcileTransaction.getPooled();
      transaction.perform(
        this._mountComponentIntoNode,
        this,
        rootID,
        container,
        transaction,
        shouldReuseMarkup
      );
      ReactUpdates.ReactReconcileTransaction.release(transaction);
    },

    /**
     * @param {string} rootID DOM ID of the root node.
     * @param {DOMElement} container DOM element to mount into.
     * @param {ReactReconcileTransaction} transaction
     * @param {boolean} shouldReuseMarkup If true, do not insert markup
     * @final
     * @private
     */
    _mountComponentIntoNode: function(
        rootID,
        container,
        transaction,
        shouldReuseMarkup) {
      var markup = this.mountComponent(rootID, transaction, 0);
      mountImageIntoNode(markup, container, shouldReuseMarkup);
    },

    /**
     * Checks if this component is owned by the supplied `owner` component.
     *
     * @param {ReactComponent} owner Component to check.
     * @return {boolean} True if `owners` owns this component.
     * @final
     * @internal
     */
    isOwnedBy: function(owner) {
      return this._owner === owner;
    },

    /**
     * Gets another component, that shares the same owner as this one, by ref.
     *
     * @param {string} ref of a sibling Component.
     * @return {?ReactComponent} the actual sibling Component.
     * @final
     * @internal
     */
    getSiblingByRef: function(ref) {
      var owner = this._owner;
      if (!owner || !owner.refs) {
        return null;
      }
      return owner.refs[ref];
    }
  }
 };

 module.exports = ReactComponent;

 },{"./Object.assign":27,"./ReactElement":52,"./ReactOwner":67,"./ReactUpdates":79,"./invariant":126,"./keyMirror":132}],33:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactComponentBrowserEnvironment
 */

 /*jslint evil: true */

 "use strict";

 var ReactDOMIDOperations = _dereq_("./ReactDOMIDOperations");
 var ReactMarkupChecksum = _dereq_("./ReactMarkupChecksum");
 var ReactMount = _dereq_("./ReactMount");
 var ReactPerf = _dereq_("./ReactPerf");
 var ReactReconcileTransaction = _dereq_("./ReactReconcileTransaction");

 var getReactRootElementInContainer = _dereq_("./getReactRootElementInContainer");
 var invariant = _dereq_("./invariant");
 var setInnerHTML = _dereq_("./setInnerHTML");


 var ELEMENT_NODE_TYPE = 1;
 var DOC_NODE_TYPE = 9;


 /**
 * Abstracts away all functionality of `ReactComponent` requires knowledge of
 * the browser context.
 */
 var ReactComponentBrowserEnvironment = {
  ReactReconcileTransaction: ReactReconcileTransaction,

  BackendIDOperations: ReactDOMIDOperations,

  /**
   * If a particular environment requires that some resources be cleaned up,
   * specify this in the injected Mixin. In the DOM, we would likely want to
   * purge any cached node ID lookups.
   *
   * @private
   */
  unmountIDFromEnvironment: function(rootNodeID) {
    ReactMount.purgeID(rootNodeID);
  },

  /**
   * @param {string} markup Markup string to place into the DOM Element.
   * @param {DOMElement} container DOM Element to insert markup into.
   * @param {boolean} shouldReuseMarkup Should reuse the existing markup in the
   * container if possible.
   */
  mountImageIntoNode: ReactPerf.measure(
    'ReactComponentBrowserEnvironment',
    'mountImageIntoNode',
    function(markup, container, shouldReuseMarkup) {
      ("production" !== "development" ? invariant(
        container && (
          container.nodeType === ELEMENT_NODE_TYPE ||
            container.nodeType === DOC_NODE_TYPE
        ),
        'mountComponentIntoNode(...): Target container is not valid.'
      ) : invariant(container && (
        container.nodeType === ELEMENT_NODE_TYPE ||
          container.nodeType === DOC_NODE_TYPE
      )));

      if (shouldReuseMarkup) {
        if (ReactMarkupChecksum.canReuseMarkup(
          markup,
          getReactRootElementInContainer(container))) {
          return;
        } else {
          ("production" !== "development" ? invariant(
            container.nodeType !== DOC_NODE_TYPE,
            'You\'re trying to render a component to the document using ' +
            'server rendering but the checksum was invalid. This usually ' +
            'means you rendered a different component type or props on ' +
            'the client from the one on the server, or your render() ' +
            'methods are impure. React cannot handle this case due to ' +
            'cross-browser quirks by rendering at the document root. You ' +
            'should look for environment dependent code in your components ' +
            'and ensure the props are the same client and server side.'
          ) : invariant(container.nodeType !== DOC_NODE_TYPE));

          if ("production" !== "development") {
            console.warn(
              'React attempted to use reuse markup in a container but the ' +
              'checksum was invalid. This generally means that you are ' +
              'using server rendering and the markup generated on the ' +
              'server was not what the client was expecting. React injected ' +
              'new markup to compensate which works but you have lost many ' +
              'of the benefits of server rendering. Instead, figure out ' +
              'why the markup being generated is different on the client ' +
              'or server.'
            );
          }
        }
      }

      ("production" !== "development" ? invariant(
        container.nodeType !== DOC_NODE_TYPE,
        'You\'re trying to render a component to the document but ' +
          'you didn\'t use server rendering. We can\'t do this ' +
          'without using server rendering due to cross-browser quirks. ' +
          'See renderComponentToString() for server rendering.'
      ) : invariant(container.nodeType !== DOC_NODE_TYPE));

      setInnerHTML(container, markup);
    }
  )
 };

 module.exports = ReactComponentBrowserEnvironment;

 },{"./ReactDOMIDOperations":41,"./ReactMarkupChecksum":62,"./ReactMount":63,"./ReactPerf":68,"./ReactReconcileTransaction":74,"./getReactRootElementInContainer":120,"./invariant":126,"./setInnerHTML":140}],34:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactCompositeComponent
 */

 "use strict";

 var ReactComponent = _dereq_("./ReactComponent");
 var ReactContext = _dereq_("./ReactContext");
 var ReactCurrentOwner = _dereq_("./ReactCurrentOwner");
 var ReactElement = _dereq_("./ReactElement");
 var ReactElementValidator = _dereq_("./ReactElementValidator");
 var ReactEmptyComponent = _dereq_("./ReactEmptyComponent");
 var ReactErrorUtils = _dereq_("./ReactErrorUtils");
 var ReactLegacyElement = _dereq_("./ReactLegacyElement");
 var ReactOwner = _dereq_("./ReactOwner");
 var ReactPerf = _dereq_("./ReactPerf");
 var ReactPropTransferer = _dereq_("./ReactPropTransferer");
 var ReactPropTypeLocations = _dereq_("./ReactPropTypeLocations");
 var ReactPropTypeLocationNames = _dereq_("./ReactPropTypeLocationNames");
 var ReactUpdates = _dereq_("./ReactUpdates");

 var assign = _dereq_("./Object.assign");
 var instantiateReactComponent = _dereq_("./instantiateReactComponent");
 var invariant = _dereq_("./invariant");
 var keyMirror = _dereq_("./keyMirror");
 var keyOf = _dereq_("./keyOf");
 var monitorCodeUse = _dereq_("./monitorCodeUse");
 var mapObject = _dereq_("./mapObject");
 var shouldUpdateReactComponent = _dereq_("./shouldUpdateReactComponent");
 var warning = _dereq_("./warning");

 var MIXINS_KEY = keyOf({mixins: null});

 /**
 * Policies that describe methods in `ReactCompositeComponentInterface`.
 */
 var SpecPolicy = keyMirror({
  /**
   * These methods may be defined only once by the class specification or mixin.
   */
  DEFINE_ONCE: null,
  /**
   * These methods may be defined by both the class specification and mixins.
   * Subsequent definitions will be chained. These methods must return void.
   */
  DEFINE_MANY: null,
  /**
   * These methods are overriding the base ReactCompositeComponent class.
   */
  OVERRIDE_BASE: null,
  /**
   * These methods are similar to DEFINE_MANY, except we assume they return
   * objects. We try to merge the keys of the return values of all the mixed in
   * functions. If there is a key conflict we throw.
   */
  DEFINE_MANY_MERGED: null
 });


 var injectedMixins = [];

 /**
 * Composite components are higher-level components that compose other composite
 * or native components.
 *
 * To create a new type of `ReactCompositeComponent`, pass a specification of
 * your new class to `React.createClass`. The only requirement of your class
 * specification is that you implement a `render` method.
 *
 *   var MyComponent = React.createClass({
 *     render: function() {
 *       return <div>Hello World</div>;
 *     }
 *   });
 *
 * The class specification supports a specific protocol of methods that have
 * special meaning (e.g. `render`). See `ReactCompositeComponentInterface` for
 * more the comprehensive protocol. Any other properties and methods in the
 * class specification will available on the prototype.
 *
 * @interface ReactCompositeComponentInterface
 * @internal
 */
 var ReactCompositeComponentInterface = {

  /**
   * An array of Mixin objects to include when defining your component.
   *
   * @type {array}
   * @optional
   */
  mixins: SpecPolicy.DEFINE_MANY,

  /**
   * An object containing properties and methods that should be defined on
   * the component's constructor instead of its prototype (static methods).
   *
   * @type {object}
   * @optional
   */
  statics: SpecPolicy.DEFINE_MANY,

  /**
   * Definition of prop types for this component.
   *
   * @type {object}
   * @optional
   */
  propTypes: SpecPolicy.DEFINE_MANY,

  /**
   * Definition of context types for this component.
   *
   * @type {object}
   * @optional
   */
  contextTypes: SpecPolicy.DEFINE_MANY,

  /**
   * Definition of context types this component sets for its children.
   *
   * @type {object}
   * @optional
   */
  childContextTypes: SpecPolicy.DEFINE_MANY,

  // ==== Definition methods ====

  /**
   * Invoked when the component is mounted. Values in the mapping will be set on
   * `this.props` if that prop is not specified (i.e. using an `in` check).
   *
   * This method is invoked before `getInitialState` and therefore cannot rely
   * on `this.state` or use `this.setState`.
   *
   * @return {object}
   * @optional
   */
  getDefaultProps: SpecPolicy.DEFINE_MANY_MERGED,

  /**
   * Invoked once before the component is mounted. The return value will be used
   * as the initial value of `this.state`.
   *
   *   getInitialState: function() {
   *     return {
   *       isOn: false,
   *       fooBaz: new BazFoo()
   *     }
   *   }
   *
   * @return {object}
   * @optional
   */
  getInitialState: SpecPolicy.DEFINE_MANY_MERGED,

  /**
   * @return {object}
   * @optional
   */
  getChildContext: SpecPolicy.DEFINE_MANY_MERGED,

  /**
   * Uses props from `this.props` and state from `this.state` to render the
   * structure of the component.
   *
   * No guarantees are made about when or how often this method is invoked, so
   * it must not have side effects.
   *
   *   render: function() {
   *     var name = this.props.name;
   *     return <div>Hello, {name}!</div>;
   *   }
   *
   * @return {ReactComponent}
   * @nosideeffects
   * @required
   */
  render: SpecPolicy.DEFINE_ONCE,



  // ==== Delegate methods ====

  /**
   * Invoked when the component is initially created and about to be mounted.
   * This may have side effects, but any external subscriptions or data created
   * by this method must be cleaned up in `componentWillUnmount`.
   *
   * @optional
   */
  componentWillMount: SpecPolicy.DEFINE_MANY,

  /**
   * Invoked when the component has been mounted and has a DOM representation.
   * However, there is no guarantee that the DOM node is in the document.
   *
   * Use this as an opportunity to operate on the DOM when the component has
   * been mounted (initialized and rendered) for the first time.
   *
   * @param {DOMElement} rootNode DOM element representing the component.
   * @optional
   */
  componentDidMount: SpecPolicy.DEFINE_MANY,

  /**
   * Invoked before the component receives new props.
   *
   * Use this as an opportunity to react to a prop transition by updating the
   * state using `this.setState`. Current props are accessed via `this.props`.
   *
   *   componentWillReceiveProps: function(nextProps, nextContext) {
   *     this.setState({
   *       likesIncreasing: nextProps.likeCount > this.props.likeCount
   *     });
   *   }
   *
   * NOTE: There is no equivalent `componentWillReceiveState`. An incoming prop
   * transition may cause a state change, but the opposite is not true. If you
   * need it, you are probably looking for `componentWillUpdate`.
   *
   * @param {object} nextProps
   * @optional
   */
  componentWillReceiveProps: SpecPolicy.DEFINE_MANY,

  /**
   * Invoked while deciding if the component should be updated as a result of
   * receiving new props, state and/or context.
   *
   * Use this as an opportunity to `return false` when you're certain that the
   * transition to the new props/state/context will not require a component
   * update.
   *
   *   shouldComponentUpdate: function(nextProps, nextState, nextContext) {
   *     return !equal(nextProps, this.props) ||
   *       !equal(nextState, this.state) ||
   *       !equal(nextContext, this.context);
   *   }
   *
   * @param {object} nextProps
   * @param {?object} nextState
   * @param {?object} nextContext
   * @return {boolean} True if the component should update.
   * @optional
   */
  shouldComponentUpdate: SpecPolicy.DEFINE_ONCE,

  /**
   * Invoked when the component is about to update due to a transition from
   * `this.props`, `this.state` and `this.context` to `nextProps`, `nextState`
   * and `nextContext`.
   *
   * Use this as an opportunity to perform preparation before an update occurs.
   *
   * NOTE: You **cannot** use `this.setState()` in this method.
   *
   * @param {object} nextProps
   * @param {?object} nextState
   * @param {?object} nextContext
   * @param {ReactReconcileTransaction} transaction
   * @optional
   */
  componentWillUpdate: SpecPolicy.DEFINE_MANY,

  /**
   * Invoked when the component's DOM representation has been updated.
   *
   * Use this as an opportunity to operate on the DOM when the component has
   * been updated.
   *
   * @param {object} prevProps
   * @param {?object} prevState
   * @param {?object} prevContext
   * @param {DOMElement} rootNode DOM element representing the component.
   * @optional
   */
  componentDidUpdate: SpecPolicy.DEFINE_MANY,

  /**
   * Invoked when the component is about to be removed from its parent and have
   * its DOM representation destroyed.
   *
   * Use this as an opportunity to deallocate any external resources.
   *
   * NOTE: There is no `componentDidUnmount` since your component will have been
   * destroyed by that point.
   *
   * @optional
   */
  componentWillUnmount: SpecPolicy.DEFINE_MANY,



  // ==== Advanced methods ====

  /**
   * Updates the component's currently mounted DOM representation.
   *
   * By default, this implements React's rendering and reconciliation algorithm.
   * Sophisticated clients may wish to override this.
   *
   * @param {ReactReconcileTransaction} transaction
   * @internal
   * @overridable
   */
  updateComponent: SpecPolicy.OVERRIDE_BASE

 };

 /**
 * Mapping from class specification keys to special processing functions.
 *
 * Although these are declared like instance properties in the specification
 * when defining classes using `React.createClass`, they are actually static
 * and are accessible on the constructor instead of the prototype. Despite
 * being static, they must be defined outside of the "statics" key under
 * which all other static methods are defined.
 */
 var RESERVED_SPEC_KEYS = {
  displayName: function(Constructor, displayName) {
    Constructor.displayName = displayName;
  },
  mixins: function(Constructor, mixins) {
    if (mixins) {
      for (var i = 0; i < mixins.length; i++) {
        mixSpecIntoComponent(Constructor, mixins[i]);
      }
    }
  },
  childContextTypes: function(Constructor, childContextTypes) {
    validateTypeDef(
      Constructor,
      childContextTypes,
      ReactPropTypeLocations.childContext
    );
    Constructor.childContextTypes = assign(
      {},
      Constructor.childContextTypes,
      childContextTypes
    );
  },
  contextTypes: function(Constructor, contextTypes) {
    validateTypeDef(
      Constructor,
      contextTypes,
      ReactPropTypeLocations.context
    );
    Constructor.contextTypes = assign(
      {},
      Constructor.contextTypes,
      contextTypes
    );
  },
  /**
   * Special case getDefaultProps which should move into statics but requires
   * automatic merging.
   */
  getDefaultProps: function(Constructor, getDefaultProps) {
    if (Constructor.getDefaultProps) {
      Constructor.getDefaultProps = createMergedResultFunction(
        Constructor.getDefaultProps,
        getDefaultProps
      );
    } else {
      Constructor.getDefaultProps = getDefaultProps;
    }
  },
  propTypes: function(Constructor, propTypes) {
    validateTypeDef(
      Constructor,
      propTypes,
      ReactPropTypeLocations.prop
    );
    Constructor.propTypes = assign(
      {},
      Constructor.propTypes,
      propTypes
    );
  },
  statics: function(Constructor, statics) {
    mixStaticSpecIntoComponent(Constructor, statics);
  }
 };

 function getDeclarationErrorAddendum(component) {
  var owner = component._owner || null;
  if (owner && owner.constructor && owner.constructor.displayName) {
    return ' Check the render method of `' + owner.constructor.displayName +
      '`.';
  }
  return '';
 }

 function validateTypeDef(Constructor, typeDef, location) {
  for (var propName in typeDef) {
    if (typeDef.hasOwnProperty(propName)) {
      ("production" !== "development" ? invariant(
        typeof typeDef[propName] == 'function',
        '%s: %s type `%s` is invalid; it must be a function, usually from ' +
        'React.PropTypes.',
        Constructor.displayName || 'ReactCompositeComponent',
        ReactPropTypeLocationNames[location],
        propName
      ) : invariant(typeof typeDef[propName] == 'function'));
    }
  }
 }

 function validateMethodOverride(proto, name) {
  var specPolicy = ReactCompositeComponentInterface.hasOwnProperty(name) ?
    ReactCompositeComponentInterface[name] :
    null;

  // Disallow overriding of base class methods unless explicitly allowed.
  if (ReactCompositeComponentMixin.hasOwnProperty(name)) {
    ("production" !== "development" ? invariant(
      specPolicy === SpecPolicy.OVERRIDE_BASE,
      'ReactCompositeComponentInterface: You are attempting to override ' +
      '`%s` from your class specification. Ensure that your method names ' +
      'do not overlap with React methods.',
      name
    ) : invariant(specPolicy === SpecPolicy.OVERRIDE_BASE));
  }

  // Disallow defining methods more than once unless explicitly allowed.
  if (proto.hasOwnProperty(name)) {
    ("production" !== "development" ? invariant(
      specPolicy === SpecPolicy.DEFINE_MANY ||
      specPolicy === SpecPolicy.DEFINE_MANY_MERGED,
      'ReactCompositeComponentInterface: You are attempting to define ' +
      '`%s` on your component more than once. This conflict may be due ' +
      'to a mixin.',
      name
    ) : invariant(specPolicy === SpecPolicy.DEFINE_MANY ||
    specPolicy === SpecPolicy.DEFINE_MANY_MERGED));
  }
 }

 function validateLifeCycleOnReplaceState(instance) {
  var compositeLifeCycleState = instance._compositeLifeCycleState;
  ("production" !== "development" ? invariant(
    instance.isMounted() ||
      compositeLifeCycleState === CompositeLifeCycle.MOUNTING,
    'replaceState(...): Can only update a mounted or mounting component.'
  ) : invariant(instance.isMounted() ||
    compositeLifeCycleState === CompositeLifeCycle.MOUNTING));
  ("production" !== "development" ? invariant(
    ReactCurrentOwner.current == null,
    'replaceState(...): Cannot update during an existing state transition ' +
    '(such as within `render`). Render methods should be a pure function ' +
    'of props and state.'
  ) : invariant(ReactCurrentOwner.current == null));
  ("production" !== "development" ? invariant(compositeLifeCycleState !== CompositeLifeCycle.UNMOUNTING,
    'replaceState(...): Cannot update while unmounting component. This ' +
    'usually means you called setState() on an unmounted component.'
  ) : invariant(compositeLifeCycleState !== CompositeLifeCycle.UNMOUNTING));
 }

 /**
 * Mixin helper which handles policy validation and reserved
 * specification keys when building `ReactCompositeComponent` classses.
 */
 function mixSpecIntoComponent(Constructor, spec) {
  if (!spec) {
    return;
  }

  ("production" !== "development" ? invariant(
    !ReactLegacyElement.isValidFactory(spec),
    'ReactCompositeComponent: You\'re attempting to ' +
    'use a component class as a mixin. Instead, just use a regular object.'
  ) : invariant(!ReactLegacyElement.isValidFactory(spec)));
  ("production" !== "development" ? invariant(
    !ReactElement.isValidElement(spec),
    'ReactCompositeComponent: You\'re attempting to ' +
    'use a component as a mixin. Instead, just use a regular object.'
  ) : invariant(!ReactElement.isValidElement(spec)));

  var proto = Constructor.prototype;

  // By handling mixins before any other properties, we ensure the same
  // chaining order is applied to methods with DEFINE_MANY policy, whether
  // mixins are listed before or after these methods in the spec.
  if (spec.hasOwnProperty(MIXINS_KEY)) {
    RESERVED_SPEC_KEYS.mixins(Constructor, spec.mixins);
  }

  for (var name in spec) {
    if (!spec.hasOwnProperty(name)) {
      continue;
    }

    if (name === MIXINS_KEY) {
      // We have already handled mixins in a special case above
      continue;
    }

    var property = spec[name];
    validateMethodOverride(proto, name);

    if (RESERVED_SPEC_KEYS.hasOwnProperty(name)) {
      RESERVED_SPEC_KEYS[name](Constructor, property);
    } else {
      // Setup methods on prototype:
      // The following member methods should not be automatically bound:
      // 1. Expected ReactCompositeComponent methods (in the "interface").
      // 2. Overridden methods (that were mixed in).
      var isCompositeComponentMethod =
        ReactCompositeComponentInterface.hasOwnProperty(name);
      var isAlreadyDefined = proto.hasOwnProperty(name);
      var markedDontBind = property && property.__reactDontBind;
      var isFunction = typeof property === 'function';
      var shouldAutoBind =
        isFunction &&
        !isCompositeComponentMethod &&
        !isAlreadyDefined &&
        !markedDontBind;

      if (shouldAutoBind) {
        if (!proto.__reactAutoBindMap) {
          proto.__reactAutoBindMap = {};
        }
        proto.__reactAutoBindMap[name] = property;
        proto[name] = property;
      } else {
        if (isAlreadyDefined) {
          var specPolicy = ReactCompositeComponentInterface[name];

          // These cases should already be caught by validateMethodOverride
          ("production" !== "development" ? invariant(
            isCompositeComponentMethod && (
              specPolicy === SpecPolicy.DEFINE_MANY_MERGED ||
              specPolicy === SpecPolicy.DEFINE_MANY
            ),
            'ReactCompositeComponent: Unexpected spec policy %s for key %s ' +
            'when mixing in component specs.',
            specPolicy,
            name
          ) : invariant(isCompositeComponentMethod && (
            specPolicy === SpecPolicy.DEFINE_MANY_MERGED ||
            specPolicy === SpecPolicy.DEFINE_MANY
          )));

          // For methods which are defined more than once, call the existing
          // methods before calling the new property, merging if appropriate.
          if (specPolicy === SpecPolicy.DEFINE_MANY_MERGED) {
            proto[name] = createMergedResultFunction(proto[name], property);
          } else if (specPolicy === SpecPolicy.DEFINE_MANY) {
            proto[name] = createChainedFunction(proto[name], property);
          }
        } else {
          proto[name] = property;
          if ("production" !== "development") {
            // Add verbose displayName to the function, which helps when looking
            // at profiling tools.
            if (typeof property === 'function' && spec.displayName) {
              proto[name].displayName = spec.displayName + '_' + name;
            }
          }
        }
      }
    }
  }
 }

 function mixStaticSpecIntoComponent(Constructor, statics) {
  if (!statics) {
    return;
  }
  for (var name in statics) {
    var property = statics[name];
    if (!statics.hasOwnProperty(name)) {
      continue;
    }

    var isReserved = name in RESERVED_SPEC_KEYS;
    ("production" !== "development" ? invariant(
      !isReserved,
      'ReactCompositeComponent: You are attempting to define a reserved ' +
      'property, `%s`, that shouldn\'t be on the "statics" key. Define it ' +
      'as an instance property instead; it will still be accessible on the ' +
      'constructor.',
      name
    ) : invariant(!isReserved));

    var isInherited = name in Constructor;
    ("production" !== "development" ? invariant(
      !isInherited,
      'ReactCompositeComponent: You are attempting to define ' +
      '`%s` on your component more than once. This conflict may be ' +
      'due to a mixin.',
      name
    ) : invariant(!isInherited));
    Constructor[name] = property;
  }
 }

 /**
 * Merge two objects, but throw if both contain the same key.
 *
 * @param {object} one The first object, which is mutated.
 * @param {object} two The second object
 * @return {object} one after it has been mutated to contain everything in two.
 */
 function mergeObjectsWithNoDuplicateKeys(one, two) {
  ("production" !== "development" ? invariant(
    one && two && typeof one === 'object' && typeof two === 'object',
    'mergeObjectsWithNoDuplicateKeys(): Cannot merge non-objects'
  ) : invariant(one && two && typeof one === 'object' && typeof two === 'object'));

  mapObject(two, function(value, key) {
    ("production" !== "development" ? invariant(
      one[key] === undefined,
      'mergeObjectsWithNoDuplicateKeys(): ' +
      'Tried to merge two objects with the same key: `%s`. This conflict ' +
      'may be due to a mixin; in particular, this may be caused by two ' +
      'getInitialState() or getDefaultProps() methods returning objects ' +
      'with clashing keys.',
      key
    ) : invariant(one[key] === undefined));
    one[key] = value;
  });
  return one;
 }

 /**
 * Creates a function that invokes two functions and merges their return values.
 *
 * @param {function} one Function to invoke first.
 * @param {function} two Function to invoke second.
 * @return {function} Function that invokes the two argument functions.
 * @private
 */
 function createMergedResultFunction(one, two) {
  return function mergedResult() {
    var a = one.apply(this, arguments);
    var b = two.apply(this, arguments);
    if (a == null) {
      return b;
    } else if (b == null) {
      return a;
    }
    return mergeObjectsWithNoDuplicateKeys(a, b);
  };
 }

 /**
 * Creates a function that invokes two functions and ignores their return vales.
 *
 * @param {function} one Function to invoke first.
 * @param {function} two Function to invoke second.
 * @return {function} Function that invokes the two argument functions.
 * @private
 */
 function createChainedFunction(one, two) {
  return function chainedFunction() {
    one.apply(this, arguments);
    two.apply(this, arguments);
  };
 }

 /**
 * `ReactCompositeComponent` maintains an auxiliary life cycle state in
 * `this._compositeLifeCycleState` (which can be null).
 *
 * This is different from the life cycle state maintained by `ReactComponent` in
 * `this._lifeCycleState`. The following diagram shows how the states overlap in
 * time. There are times when the CompositeLifeCycle is null - at those times it
 * is only meaningful to look at ComponentLifeCycle alone.
 *
 * Top Row: ReactComponent.ComponentLifeCycle
 * Low Row: ReactComponent.CompositeLifeCycle
 *
 * +-------+---------------------------------+--------+
 * |  UN   |             MOUNTED             |   UN   |
 * |MOUNTED|                                 | MOUNTED|
 * +-------+---------------------------------+--------+
 * |       ^--------+   +-------+   +--------^        |
 * |       |        |   |       |   |        |        |
 * |    0--|MOUNTING|-0-|RECEIVE|-0-|   UN   |--->0   |
 * |       |        |   |PROPS  |   |MOUNTING|        |
 * |       |        |   |       |   |        |        |
 * |       |        |   |       |   |        |        |
 * |       +--------+   +-------+   +--------+        |
 * |       |                                 |        |
 * +-------+---------------------------------+--------+
 */
 var CompositeLifeCycle = keyMirror({
  /**
   * Components in the process of being mounted respond to state changes
   * differently.
   */
  MOUNTING: null,
  /**
   * Components in the process of being unmounted are guarded against state
   * changes.
   */
  UNMOUNTING: null,
  /**
   * Components that are mounted and receiving new props respond to state
   * changes differently.
   */
  RECEIVING_PROPS: null
 });

 /**
 * @lends {ReactCompositeComponent.prototype}
 */
 var ReactCompositeComponentMixin = {

  /**
   * Base constructor for all composite component.
   *
   * @param {ReactElement} element
   * @final
   * @internal
   */
  construct: function(element) {
    // Children can be either an array or more than one argument
    ReactComponent.Mixin.construct.apply(this, arguments);
    ReactOwner.Mixin.construct.apply(this, arguments);

    this.state = null;
    this._pendingState = null;

    // This is the public post-processed context. The real context and pending
    // context lives on the element.
    this.context = null;

    this._compositeLifeCycleState = null;
  },

  /**
   * Checks whether or not this composite component is mounted.
   * @return {boolean} True if mounted, false otherwise.
   * @protected
   * @final
   */
  isMounted: function() {
    return ReactComponent.Mixin.isMounted.call(this) &&
      this._compositeLifeCycleState !== CompositeLifeCycle.MOUNTING;
  },

  /**
   * Initializes the component, renders markup, and registers event listeners.
   *
   * @param {string} rootID DOM ID of the root node.
   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction
   * @param {number} mountDepth number of components in the owner hierarchy
   * @return {?string} Rendered markup to be inserted into the DOM.
   * @final
   * @internal
   */
  mountComponent: ReactPerf.measure(
    'ReactCompositeComponent',
    'mountComponent',
    function(rootID, transaction, mountDepth) {
      ReactComponent.Mixin.mountComponent.call(
        this,
        rootID,
        transaction,
        mountDepth
      );
      this._compositeLifeCycleState = CompositeLifeCycle.MOUNTING;

      if (this.__reactAutoBindMap) {
        this._bindAutoBindMethods();
      }

      this.context = this._processContext(this._currentElement._context);
      this.props = this._processProps(this.props);

      this.state = this.getInitialState ? this.getInitialState() : null;
      ("production" !== "development" ? invariant(
        typeof this.state === 'object' && !Array.isArray(this.state),
        '%s.getInitialState(): must return an object or null',
        this.constructor.displayName || 'ReactCompositeComponent'
      ) : invariant(typeof this.state === 'object' && !Array.isArray(this.state)));

      this._pendingState = null;
      this._pendingForceUpdate = false;

      if (this.componentWillMount) {
        this.componentWillMount();
        // When mounting, calls to `setState` by `componentWillMount` will set
        // `this._pendingState` without triggering a re-render.
        if (this._pendingState) {
          this.state = this._pendingState;
          this._pendingState = null;
        }
      }

      this._renderedComponent = instantiateReactComponent(
        this._renderValidatedComponent(),
        this._currentElement.type // The wrapping type
      );

      // Done with mounting, `setState` will now trigger UI changes.
      this._compositeLifeCycleState = null;
      var markup = this._renderedComponent.mountComponent(
        rootID,
        transaction,
        mountDepth + 1
      );
      if (this.componentDidMount) {
        transaction.getReactMountReady().enqueue(this.componentDidMount, this);
      }
      return markup;
    }
  ),

  /**
   * Releases any resources allocated by `mountComponent`.
   *
   * @final
   * @internal
   */
  unmountComponent: function() {
    this._compositeLifeCycleState = CompositeLifeCycle.UNMOUNTING;
    if (this.componentWillUnmount) {
      this.componentWillUnmount();
    }
    this._compositeLifeCycleState = null;

    this._renderedComponent.unmountComponent();
    this._renderedComponent = null;

    ReactComponent.Mixin.unmountComponent.call(this);

    // Some existing components rely on this.props even after they've been
    // destroyed (in event handlers).
    // TODO: this.props = null;
    // TODO: this.state = null;
  },

  /**
   * Sets a subset of the state. Always use this or `replaceState` to mutate
   * state. You should treat `this.state` as immutable.
   *
   * There is no guarantee that `this.state` will be immediately updated, so
   * accessing `this.state` after calling this method may return the old value.
   *
   * There is no guarantee that calls to `setState` will run synchronously,
   * as they may eventually be batched together.  You can provide an optional
   * callback that will be executed when the call to setState is actually
   * completed.
   *
   * @param {object} partialState Next partial state to be merged with state.
   * @param {?function} callback Called after state is updated.
   * @final
   * @protected
   */
  setState: function(partialState, callback) {
    ("production" !== "development" ? invariant(
      typeof partialState === 'object' || partialState == null,
      'setState(...): takes an object of state variables to update.'
    ) : invariant(typeof partialState === 'object' || partialState == null));
    if ("production" !== "development"){
      ("production" !== "development" ? warning(
        partialState != null,
        'setState(...): You passed an undefined or null state object; ' +
        'instead, use forceUpdate().'
      ) : null);
    }
    // Merge with `_pendingState` if it exists, otherwise with existing state.
    this.replaceState(
      assign({}, this._pendingState || this.state, partialState),
      callback
    );
  },

  /**
   * Replaces all of the state. Always use this or `setState` to mutate state.
   * You should treat `this.state` as immutable.
   *
   * There is no guarantee that `this.state` will be immediately updated, so
   * accessing `this.state` after calling this method may return the old value.
   *
   * @param {object} completeState Next state.
   * @param {?function} callback Called after state is updated.
   * @final
   * @protected
   */
  replaceState: function(completeState, callback) {
    validateLifeCycleOnReplaceState(this);
    this._pendingState = completeState;
    if (this._compositeLifeCycleState !== CompositeLifeCycle.MOUNTING) {
      // If we're in a componentWillMount handler, don't enqueue a rerender
      // because ReactUpdates assumes we're in a browser context (which is wrong
      // for server rendering) and we're about to do a render anyway.
      // TODO: The callback here is ignored when setState is called from
      // componentWillMount. Either fix it or disallow doing so completely in
      // favor of getInitialState.
      ReactUpdates.enqueueUpdate(this, callback);
    }
  },

  /**
   * Filters the context object to only contain keys specified in
   * `contextTypes`, and asserts that they are valid.
   *
   * @param {object} context
   * @return {?object}
   * @private
   */
  _processContext: function(context) {
    var maskedContext = null;
    var contextTypes = this.constructor.contextTypes;
    if (contextTypes) {
      maskedContext = {};
      for (var contextName in contextTypes) {
        maskedContext[contextName] = context[contextName];
      }
      if ("production" !== "development") {
        this._checkPropTypes(
          contextTypes,
          maskedContext,
          ReactPropTypeLocations.context
        );
      }
    }
    return maskedContext;
  },

  /**
   * @param {object} currentContext
   * @return {object}
   * @private
   */
  _processChildContext: function(currentContext) {
    var childContext = this.getChildContext && this.getChildContext();
    var displayName = this.constructor.displayName || 'ReactCompositeComponent';
    if (childContext) {
      ("production" !== "development" ? invariant(
        typeof this.constructor.childContextTypes === 'object',
        '%s.getChildContext(): childContextTypes must be defined in order to ' +
        'use getChildContext().',
        displayName
      ) : invariant(typeof this.constructor.childContextTypes === 'object'));
      if ("production" !== "development") {
        this._checkPropTypes(
          this.constructor.childContextTypes,
          childContext,
          ReactPropTypeLocations.childContext
        );
      }
      for (var name in childContext) {
        ("production" !== "development" ? invariant(
          name in this.constructor.childContextTypes,
          '%s.getChildContext(): key "%s" is not defined in childContextTypes.',
          displayName,
          name
        ) : invariant(name in this.constructor.childContextTypes));
      }
      return assign({}, currentContext, childContext);
    }
    return currentContext;
  },

  /**
   * Processes props by setting default values for unspecified props and
   * asserting that the props are valid. Does not mutate its argument; returns
   * a new props object with defaults merged in.
   *
   * @param {object} newProps
   * @return {object}
   * @private
   */
  _processProps: function(newProps) {
    if ("production" !== "development") {
      var propTypes = this.constructor.propTypes;
      if (propTypes) {
        this._checkPropTypes(propTypes, newProps, ReactPropTypeLocations.prop);
      }
    }
    return newProps;
  },

  /**
   * Assert that the props are valid
   *
   * @param {object} propTypes Map of prop name to a ReactPropType
   * @param {object} props
   * @param {string} location e.g. "prop", "context", "child context"
   * @private
   */
  _checkPropTypes: function(propTypes, props, location) {
    // TODO: Stop validating prop types here and only use the element
    // validation.
    var componentName = this.constructor.displayName;
    for (var propName in propTypes) {
      if (propTypes.hasOwnProperty(propName)) {
        var error =
          propTypes[propName](props, propName, componentName, location);
        if (error instanceof Error) {
          // We may want to extend this logic for similar errors in
          // renderComponent calls, so I'm abstracting it away into
          // a function to minimize refactoring in the future
          var addendum = getDeclarationErrorAddendum(this);
          ("production" !== "development" ? warning(false, error.message + addendum) : null);
        }
      }
    }
  },

  /**
   * If any of `_pendingElement`, `_pendingState`, or `_pendingForceUpdate`
   * is set, update the component.
   *
   * @param {ReactReconcileTransaction} transaction
   * @internal
   */
  performUpdateIfNecessary: function(transaction) {
    var compositeLifeCycleState = this._compositeLifeCycleState;
    // Do not trigger a state transition if we are in the middle of mounting or
    // receiving props because both of those will already be doing this.
    if (compositeLifeCycleState === CompositeLifeCycle.MOUNTING ||
        compositeLifeCycleState === CompositeLifeCycle.RECEIVING_PROPS) {
      return;
    }

    if (this._pendingElement == null &&
        this._pendingState == null &&
        !this._pendingForceUpdate) {
      return;
    }

    var nextContext = this.context;
    var nextProps = this.props;
    var nextElement = this._currentElement;
    if (this._pendingElement != null) {
      nextElement = this._pendingElement;
      nextContext = this._processContext(nextElement._context);
      nextProps = this._processProps(nextElement.props);
      this._pendingElement = null;

      this._compositeLifeCycleState = CompositeLifeCycle.RECEIVING_PROPS;
      if (this.componentWillReceiveProps) {
        this.componentWillReceiveProps(nextProps, nextContext);
      }
    }

    this._compositeLifeCycleState = null;

    var nextState = this._pendingState || this.state;
    this._pendingState = null;

    var shouldUpdate =
      this._pendingForceUpdate ||
      !this.shouldComponentUpdate ||
      this.shouldComponentUpdate(nextProps, nextState, nextContext);

    if ("production" !== "development") {
      if (typeof shouldUpdate === "undefined") {
        console.warn(
          (this.constructor.displayName || 'ReactCompositeComponent') +
          '.shouldComponentUpdate(): Returned undefined instead of a ' +
          'boolean value. Make sure to return true or false.'
        );
      }
    }

    if (shouldUpdate) {
      this._pendingForceUpdate = false;
      // Will set `this.props`, `this.state` and `this.context`.
      this._performComponentUpdate(
        nextElement,
        nextProps,
        nextState,
        nextContext,
        transaction
      );
    } else {
      // If it's determined that a component should not update, we still want
      // to set props and state.
      this._currentElement = nextElement;
      this.props = nextProps;
      this.state = nextState;
      this.context = nextContext;

      // Owner cannot change because shouldUpdateReactComponent doesn't allow
      // it. TODO: Remove this._owner completely.
      this._owner = nextElement._owner;
    }
  },

  /**
   * Merges new props and state, notifies delegate methods of update and
   * performs update.
   *
   * @param {ReactElement} nextElement Next element
   * @param {object} nextProps Next public object to set as properties.
   * @param {?object} nextState Next object to set as state.
   * @param {?object} nextContext Next public object to set as context.
   * @param {ReactReconcileTransaction} transaction
   * @private
   */
  _performComponentUpdate: function(
    nextElement,
    nextProps,
    nextState,
    nextContext,
    transaction
  ) {
    var prevElement = this._currentElement;
    var prevProps = this.props;
    var prevState = this.state;
    var prevContext = this.context;

    if (this.componentWillUpdate) {
      this.componentWillUpdate(nextProps, nextState, nextContext);
    }

    this._currentElement = nextElement;
    this.props = nextProps;
    this.state = nextState;
    this.context = nextContext;

    // Owner cannot change because shouldUpdateReactComponent doesn't allow
    // it. TODO: Remove this._owner completely.
    this._owner = nextElement._owner;

    this.updateComponent(
      transaction,
      prevElement
    );

    if (this.componentDidUpdate) {
      transaction.getReactMountReady().enqueue(
        this.componentDidUpdate.bind(this, prevProps, prevState, prevContext),
        this
      );
    }
  },

  receiveComponent: function(nextElement, transaction) {
    if (nextElement === this._currentElement &&
        nextElement._owner != null) {
      // Since elements are immutable after the owner is rendered,
      // we can do a cheap identity compare here to determine if this is a
      // superfluous reconcile. It's possible for state to be mutable but such
      // change should trigger an update of the owner which would recreate
      // the element. We explicitly check for the existence of an owner since
      // it's possible for a element created outside a composite to be
      // deeply mutated and reused.
      return;
    }

    ReactComponent.Mixin.receiveComponent.call(
      this,
      nextElement,
      transaction
    );
  },

  /**
   * Updates the component's currently mounted DOM representation.
   *
   * By default, this implements React's rendering and reconciliation algorithm.
   * Sophisticated clients may wish to override this.
   *
   * @param {ReactReconcileTransaction} transaction
   * @param {ReactElement} prevElement
   * @internal
   * @overridable
   */
  updateComponent: ReactPerf.measure(
    'ReactCompositeComponent',
    'updateComponent',
    function(transaction, prevParentElement) {
      ReactComponent.Mixin.updateComponent.call(
        this,
        transaction,
        prevParentElement
      );

      var prevComponentInstance = this._renderedComponent;
      var prevElement = prevComponentInstance._currentElement;
      var nextElement = this._renderValidatedComponent();
      if (shouldUpdateReactComponent(prevElement, nextElement)) {
        prevComponentInstance.receiveComponent(nextElement, transaction);
      } else {
        // These two IDs are actually the same! But nothing should rely on that.
        var thisID = this._rootNodeID;
        var prevComponentID = prevComponentInstance._rootNodeID;
        prevComponentInstance.unmountComponent();
        this._renderedComponent = instantiateReactComponent(
          nextElement,
          this._currentElement.type
        );
        var nextMarkup = this._renderedComponent.mountComponent(
          thisID,
          transaction,
          this._mountDepth + 1
        );
        ReactComponent.BackendIDOperations.dangerouslyReplaceNodeWithMarkupByID(
          prevComponentID,
          nextMarkup
        );
      }
    }
  ),

  /**
   * Forces an update. This should only be invoked when it is known with
   * certainty that we are **not** in a DOM transaction.
   *
   * You may want to call this when you know that some deeper aspect of the
   * component's state has changed but `setState` was not called.
   *
   * This will not invoke `shouldUpdateComponent`, but it will invoke
   * `componentWillUpdate` and `componentDidUpdate`.
   *
   * @param {?function} callback Called after update is complete.
   * @final
   * @protected
   */
  forceUpdate: function(callback) {
    var compositeLifeCycleState = this._compositeLifeCycleState;
    ("production" !== "development" ? invariant(
      this.isMounted() ||
        compositeLifeCycleState === CompositeLifeCycle.MOUNTING,
      'forceUpdate(...): Can only force an update on mounted or mounting ' +
        'components.'
    ) : invariant(this.isMounted() ||
      compositeLifeCycleState === CompositeLifeCycle.MOUNTING));
    ("production" !== "development" ? invariant(
      compositeLifeCycleState !== CompositeLifeCycle.UNMOUNTING &&
      ReactCurrentOwner.current == null,
      'forceUpdate(...): Cannot force an update while unmounting component ' +
      'or within a `render` function.'
    ) : invariant(compositeLifeCycleState !== CompositeLifeCycle.UNMOUNTING &&
    ReactCurrentOwner.current == null));
    this._pendingForceUpdate = true;
    ReactUpdates.enqueueUpdate(this, callback);
  },

  /**
   * @private
   */
  _renderValidatedComponent: ReactPerf.measure(
    'ReactCompositeComponent',
    '_renderValidatedComponent',
    function() {
      var renderedComponent;
      var previousContext = ReactContext.current;
      ReactContext.current = this._processChildContext(
        this._currentElement._context
      );
      ReactCurrentOwner.current = this;
      try {
        renderedComponent = this.render();
        if (renderedComponent === null || renderedComponent === false) {
          renderedComponent = ReactEmptyComponent.getEmptyComponent();
          ReactEmptyComponent.registerNullComponentID(this._rootNodeID);
        } else {
          ReactEmptyComponent.deregisterNullComponentID(this._rootNodeID);
        }
      } finally {
        ReactContext.current = previousContext;
        ReactCurrentOwner.current = null;
      }
      ("production" !== "development" ? invariant(
        ReactElement.isValidElement(renderedComponent),
        '%s.render(): A valid ReactComponent must be returned. You may have ' +
          'returned undefined, an array or some other invalid object.',
        this.constructor.displayName || 'ReactCompositeComponent'
      ) : invariant(ReactElement.isValidElement(renderedComponent)));
      return renderedComponent;
    }
  ),

  /**
   * @private
   */
  _bindAutoBindMethods: function() {
    for (var autoBindKey in this.__reactAutoBindMap) {
      if (!this.__reactAutoBindMap.hasOwnProperty(autoBindKey)) {
        continue;
      }
      var method = this.__reactAutoBindMap[autoBindKey];
      this[autoBindKey] = this._bindAutoBindMethod(ReactErrorUtils.guard(
        method,
        this.constructor.displayName + '.' + autoBindKey
      ));
    }
  },

  /**
   * Binds a method to the component.
   *
   * @param {function} method Method to be bound.
   * @private
   */
  _bindAutoBindMethod: function(method) {
    var component = this;
    var boundMethod = method.bind(component);
    if ("production" !== "development") {
      boundMethod.__reactBoundContext = component;
      boundMethod.__reactBoundMethod = method;
      boundMethod.__reactBoundArguments = null;
      var componentName = component.constructor.displayName;
      var _bind = boundMethod.bind;
      boundMethod.bind = function(newThis ) {for (var args=[],$__0=1,$__1=arguments.length;$__0<$__1;$__0++) args.push(arguments[$__0]);
        // User is trying to bind() an autobound method; we effectively will
        // ignore the value of "this" that the user is trying to use, so
        // let's warn.
        if (newThis !== component && newThis !== null) {
          monitorCodeUse('react_bind_warning', { component: componentName });
          console.warn(
            'bind(): React component methods may only be bound to the ' +
            'component instance. See ' + componentName
          );
        } else if (!args.length) {
          monitorCodeUse('react_bind_warning', { component: componentName });
          console.warn(
            'bind(): You are binding a component method to the component. ' +
            'React does this for you automatically in a high-performance ' +
            'way, so you can safely remove this call. See ' + componentName
          );
          return boundMethod;
        }
        var reboundMethod = _bind.apply(boundMethod, arguments);
        reboundMethod.__reactBoundContext = component;
        reboundMethod.__reactBoundMethod = method;
        reboundMethod.__reactBoundArguments = args;
        return reboundMethod;
      };
    }
    return boundMethod;
  }
 };

 var ReactCompositeComponentBase = function() {};
 assign(
  ReactCompositeComponentBase.prototype,
  ReactComponent.Mixin,
  ReactOwner.Mixin,
  ReactPropTransferer.Mixin,
  ReactCompositeComponentMixin
 );

 /**
 * Module for creating composite components.
 *
 * @class ReactCompositeComponent
 * @extends ReactComponent
 * @extends ReactOwner
 * @extends ReactPropTransferer
 */
 var ReactCompositeComponent = {

  LifeCycle: CompositeLifeCycle,

  Base: ReactCompositeComponentBase,

  /**
   * Creates a composite component class given a class specification.
   *
   * @param {object} spec Class specification (which must define `render`).
   * @return {function} Component constructor function.
   * @public
   */
  createClass: function(spec) {
    var Constructor = function(props) {
      // This constructor is overridden by mocks. The argument is used
      // by mocks to assert on what gets mounted. This will later be used
      // by the stand-alone class implementation.
    };
    Constructor.prototype = new ReactCompositeComponentBase();
    Constructor.prototype.constructor = Constructor;

    injectedMixins.forEach(
      mixSpecIntoComponent.bind(null, Constructor)
    );

    mixSpecIntoComponent(Constructor, spec);

    // Initialize the defaultProps property after all mixins have been merged
    if (Constructor.getDefaultProps) {
      Constructor.defaultProps = Constructor.getDefaultProps();
    }

    ("production" !== "development" ? invariant(
      Constructor.prototype.render,
      'createClass(...): Class specification must implement a `render` method.'
    ) : invariant(Constructor.prototype.render));

    if ("production" !== "development") {
      if (Constructor.prototype.componentShouldUpdate) {
        monitorCodeUse(
          'react_component_should_update_warning',
          { component: spec.displayName }
        );
        console.warn(
          (spec.displayName || 'A component') + ' has a method called ' +
          'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' +
          'The name is phrased as a question because the function is ' +
          'expected to return a value.'
         );
      }
    }

    // Reduce time spent doing lookups by setting these on the prototype.
    for (var methodName in ReactCompositeComponentInterface) {
      if (!Constructor.prototype[methodName]) {
        Constructor.prototype[methodName] = null;
      }
    }

    if ("production" !== "development") {
      return ReactLegacyElement.wrapFactory(
        ReactElementValidator.createFactory(Constructor)
      );
    }
    return ReactLegacyElement.wrapFactory(
      ReactElement.createFactory(Constructor)
    );
  },

  injection: {
    injectMixin: function(mixin) {
      injectedMixins.push(mixin);
    }
  }
 };

 module.exports = ReactCompositeComponent;

 },{"./Object.assign":27,"./ReactComponent":32,"./ReactContext":35,"./ReactCurrentOwner":36,"./ReactElement":52,"./ReactElementValidator":53,"./ReactEmptyComponent":54,"./ReactErrorUtils":55,"./ReactLegacyElement":61,"./ReactOwner":67,"./ReactPerf":68,"./ReactPropTransferer":69,"./ReactPropTypeLocationNames":70,"./ReactPropTypeLocations":71,"./ReactUpdates":79,"./instantiateReactComponent":125,"./invariant":126,"./keyMirror":132,"./keyOf":133,"./mapObject":134,"./monitorCodeUse":136,"./shouldUpdateReactComponent":142,"./warning":145}],35:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactContext
 */

 "use strict";

 var assign = _dereq_("./Object.assign");

 /**
 * Keeps track of the current context.
 *
 * The context is automatically passed down the component ownership hierarchy
 * and is accessible via `this.context` on ReactCompositeComponents.
 */
 var ReactContext = {

  /**
   * @internal
   * @type {object}
   */
  current: {},

  /**
   * Temporarily extends the current context while executing scopedCallback.
   *
   * A typical use case might look like
   *
   *  render: function() {
   *    var children = ReactContext.withContext({foo: 'foo'}, () => (
   *
   *    ));
   *    return <div>{children}</div>;
   *  }
   *
   * @param {object} newContext New context to merge into the existing context
   * @param {function} scopedCallback Callback to run with the new context
   * @return {ReactComponent|array<ReactComponent>}
   */
  withContext: function(newContext, scopedCallback) {
    var result;
    var previousContext = ReactContext.current;
    ReactContext.current = assign({}, previousContext, newContext);
    try {
      result = scopedCallback();
    } finally {
      ReactContext.current = previousContext;
    }
    return result;
  }

 };

 module.exports = ReactContext;

 },{"./Object.assign":27}],36:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactCurrentOwner
 */

 "use strict";

 /**
 * Keeps track of the current owner.
 *
 * The current owner is the component who should own any components that are
 * currently being constructed.
 *
 * The depth indicate how many composite components are above this render level.
 */
 var ReactCurrentOwner = {

  /**
   * @internal
   * @type {ReactComponent}
   */
  current: null

 };

 module.exports = ReactCurrentOwner;

 },{}],37:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOM
 * @typechecks static-only
 */

 "use strict";

 var ReactElement = _dereq_("./ReactElement");
 var ReactElementValidator = _dereq_("./ReactElementValidator");
 var ReactLegacyElement = _dereq_("./ReactLegacyElement");

 var mapObject = _dereq_("./mapObject");

 /**
 * Create a factory that creates HTML tag elements.
 *
 * @param {string} tag Tag name (e.g. `div`).
 * @private
 */
 function createDOMFactory(tag) {
  if ("production" !== "development") {
    return ReactLegacyElement.markNonLegacyFactory(
      ReactElementValidator.createFactory(tag)
    );
  }
  return ReactLegacyElement.markNonLegacyFactory(
    ReactElement.createFactory(tag)
  );
 }

 /**
 * Creates a mapping from supported HTML tags to `ReactDOMComponent` classes.
 * This is also accessible via `React.DOM`.
 *
 * @public
 */
 var ReactDOM = mapObject({
  a: 'a',
  abbr: 'abbr',
  address: 'address',
  area: 'area',
  article: 'article',
  aside: 'aside',
  audio: 'audio',
  b: 'b',
  base: 'base',
  bdi: 'bdi',
  bdo: 'bdo',
  big: 'big',
  blockquote: 'blockquote',
  body: 'body',
  br: 'br',
  button: 'button',
  canvas: 'canvas',
  caption: 'caption',
  cite: 'cite',
  code: 'code',
  col: 'col',
  colgroup: 'colgroup',
  data: 'data',
  datalist: 'datalist',
  dd: 'dd',
  del: 'del',
  details: 'details',
  dfn: 'dfn',
  dialog: 'dialog',
  div: 'div',
  dl: 'dl',
  dt: 'dt',
  em: 'em',
  embed: 'embed',
  fieldset: 'fieldset',
  figcaption: 'figcaption',
  figure: 'figure',
  footer: 'footer',
  form: 'form',
  h1: 'h1',
  h2: 'h2',
  h3: 'h3',
  h4: 'h4',
  h5: 'h5',
  h6: 'h6',
  head: 'head',
  header: 'header',
  hr: 'hr',
  html: 'html',
  i: 'i',
  iframe: 'iframe',
  img: 'img',
  input: 'input',
  ins: 'ins',
  kbd: 'kbd',
  keygen: 'keygen',
  label: 'label',
  legend: 'legend',
  li: 'li',
  link: 'link',
  main: 'main',
  map: 'map',
  mark: 'mark',
  menu: 'menu',
  menuitem: 'menuitem',
  meta: 'meta',
  meter: 'meter',
  nav: 'nav',
  noscript: 'noscript',
  object: 'object',
  ol: 'ol',
  optgroup: 'optgroup',
  option: 'option',
  output: 'output',
  p: 'p',
  param: 'param',
  picture: 'picture',
  pre: 'pre',
  progress: 'progress',
  q: 'q',
  rp: 'rp',
  rt: 'rt',
  ruby: 'ruby',
  s: 's',
  samp: 'samp',
  script: 'script',
  section: 'section',
  select: 'select',
  small: 'small',
  source: 'source',
  span: 'span',
  strong: 'strong',
  style: 'style',
  sub: 'sub',
  summary: 'summary',
  sup: 'sup',
  table: 'table',
  tbody: 'tbody',
  td: 'td',
  textarea: 'textarea',
  tfoot: 'tfoot',
  th: 'th',
  thead: 'thead',
  time: 'time',
  title: 'title',
  tr: 'tr',
  track: 'track',
  u: 'u',
  ul: 'ul',
  'var': 'var',
  video: 'video',
  wbr: 'wbr',

  // SVG
  circle: 'circle',
  defs: 'defs',
  ellipse: 'ellipse',
  g: 'g',
  line: 'line',
  linearGradient: 'linearGradient',
  mask: 'mask',
  path: 'path',
  pattern: 'pattern',
  polygon: 'polygon',
  polyline: 'polyline',
  radialGradient: 'radialGradient',
  rect: 'rect',
  stop: 'stop',
  svg: 'svg',
  text: 'text',
  tspan: 'tspan'

 }, createDOMFactory);

 module.exports = ReactDOM;

 },{"./ReactElement":52,"./ReactElementValidator":53,"./ReactLegacyElement":61,"./mapObject":134}],38:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMButton
 */

 "use strict";

 var AutoFocusMixin = _dereq_("./AutoFocusMixin");
 var ReactBrowserComponentMixin = _dereq_("./ReactBrowserComponentMixin");
 var ReactCompositeComponent = _dereq_("./ReactCompositeComponent");
 var ReactElement = _dereq_("./ReactElement");
 var ReactDOM = _dereq_("./ReactDOM");

 var keyMirror = _dereq_("./keyMirror");

 // Store a reference to the <button> `ReactDOMComponent`. TODO: use string
 var button = ReactElement.createFactory(ReactDOM.button.type);

 var mouseListenerNames = keyMirror({
  onClick: true,
  onDoubleClick: true,
  onMouseDown: true,
  onMouseMove: true,
  onMouseUp: true,
  onClickCapture: true,
  onDoubleClickCapture: true,
  onMouseDownCapture: true,
  onMouseMoveCapture: true,
  onMouseUpCapture: true
 });

 /**
 * Implements a <button> native component that does not receive mouse events
 * when `disabled` is set.
 */
 var ReactDOMButton = ReactCompositeComponent.createClass({
  displayName: 'ReactDOMButton',

  mixins: [AutoFocusMixin, ReactBrowserComponentMixin],

  render: function() {
    var props = {};

    // Copy the props; except the mouse listeners if we're disabled
    for (var key in this.props) {
      if (this.props.hasOwnProperty(key) &&
          (!this.props.disabled || !mouseListenerNames[key])) {
        props[key] = this.props[key];
      }
    }

    return button(props, this.props.children);
  }

 });

 module.exports = ReactDOMButton;

 },{"./AutoFocusMixin":2,"./ReactBrowserComponentMixin":29,"./ReactCompositeComponent":34,"./ReactDOM":37,"./ReactElement":52,"./keyMirror":132}],39:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMComponent
 * @typechecks static-only
 */

 "use strict";

 var CSSPropertyOperations = _dereq_("./CSSPropertyOperations");
 var DOMProperty = _dereq_("./DOMProperty");
 var DOMPropertyOperations = _dereq_("./DOMPropertyOperations");
 var ReactBrowserComponentMixin = _dereq_("./ReactBrowserComponentMixin");
 var ReactComponent = _dereq_("./ReactComponent");
 var ReactBrowserEventEmitter = _dereq_("./ReactBrowserEventEmitter");
 var ReactMount = _dereq_("./ReactMount");
 var ReactMultiChild = _dereq_("./ReactMultiChild");
 var ReactPerf = _dereq_("./ReactPerf");

 var assign = _dereq_("./Object.assign");
 var escapeTextForBrowser = _dereq_("./escapeTextForBrowser");
 var invariant = _dereq_("./invariant");
 var isEventSupported = _dereq_("./isEventSupported");
 var keyOf = _dereq_("./keyOf");
 var monitorCodeUse = _dereq_("./monitorCodeUse");

 var deleteListener = ReactBrowserEventEmitter.deleteListener;
 var listenTo = ReactBrowserEventEmitter.listenTo;
 var registrationNameModules = ReactBrowserEventEmitter.registrationNameModules;

 // For quickly matching children type, to test if can be treated as content.
 var CONTENT_TYPES = {'string': true, 'number': true};

 var STYLE = keyOf({style: null});

 var ELEMENT_NODE_TYPE = 1;

 /**
 * @param {?object} props
 */
 function assertValidProps(props) {
  if (!props) {
    return;
  }
  // Note the use of `==` which checks for null or undefined.
  ("production" !== "development" ? invariant(
    props.children == null || props.dangerouslySetInnerHTML == null,
    'Can only set one of `children` or `props.dangerouslySetInnerHTML`.'
  ) : invariant(props.children == null || props.dangerouslySetInnerHTML == null));
  if ("production" !== "development") {
    if (props.contentEditable && props.children != null) {
      console.warn(
        'A component is `contentEditable` and contains `children` managed by ' +
        'React. It is now your responsibility to guarantee that none of those '+
        'nodes are unexpectedly modified or duplicated. This is probably not ' +
        'intentional.'
      );
    }
  }
  ("production" !== "development" ? invariant(
    props.style == null || typeof props.style === 'object',
    'The `style` prop expects a mapping from style properties to values, ' +
    'not a string.'
  ) : invariant(props.style == null || typeof props.style === 'object'));
 }

 function putListener(id, registrationName, listener, transaction) {
  if ("production" !== "development") {
    // IE8 has no API for event capturing and the `onScroll` event doesn't
    // bubble.
    if (registrationName === 'onScroll' &&
        !isEventSupported('scroll', true)) {
      monitorCodeUse('react_no_scroll_event');
      console.warn('This browser doesn\'t support the `onScroll` event');
    }
  }
  var container = ReactMount.findReactContainerForID(id);
  if (container) {
    var doc = container.nodeType === ELEMENT_NODE_TYPE ?
      container.ownerDocument :
      container;
    listenTo(registrationName, doc);
  }
  transaction.getPutListenerQueue().enqueuePutListener(
    id,
    registrationName,
    listener
  );
 }

 // For HTML, certain tags should omit their close tag. We keep a whitelist for
 // those special cased tags.

 var omittedCloseTags = {
  'area': true,
  'base': true,
  'br': true,
  'col': true,
  'embed': true,
  'hr': true,
  'img': true,
  'input': true,
  'keygen': true,
  'link': true,
  'meta': true,
  'param': true,
  'source': true,
  'track': true,
  'wbr': true
  // NOTE: menuitem's close tag should be omitted, but that causes problems.
 };

 // We accept any tag to be rendered but since this gets injected into abitrary
 // HTML, we want to make sure that it's a safe tag.
 // http://www.w3.org/TR/REC-xml/#NT-Name

 var VALID_TAG_REGEX = /^[a-zA-Z][a-zA-Z:_\.\-\d]*$/; // Simplified subset
 var validatedTagCache = {};
 var hasOwnProperty = {}.hasOwnProperty;

 function validateDangerousTag(tag) {
  if (!hasOwnProperty.call(validatedTagCache, tag)) {
    ("production" !== "development" ? invariant(VALID_TAG_REGEX.test(tag), 'Invalid tag: %s', tag) : invariant(VALID_TAG_REGEX.test(tag)));
    validatedTagCache[tag] = true;
  }
 }

 /**
 * Creates a new React class that is idempotent and capable of containing other
 * React components. It accepts event listeners and DOM properties that are
 * valid according to `DOMProperty`.
 *
 *  - Event listeners: `onClick`, `onMouseDown`, etc.
 *  - DOM properties: `className`, `name`, `title`, etc.
 *
 * The `style` property functions differently from the DOM API. It accepts an
 * object mapping of style properties to values.
 *
 * @constructor ReactDOMComponent
 * @extends ReactComponent
 * @extends ReactMultiChild
 */
 function ReactDOMComponent(tag) {
  validateDangerousTag(tag);
  this._tag = tag;
  this.tagName = tag.toUpperCase();
 }

 ReactDOMComponent.displayName = 'ReactDOMComponent';

 ReactDOMComponent.Mixin = {

  /**
   * Generates root tag markup then recurses. This method has side effects and
   * is not idempotent.
   *
   * @internal
   * @param {string} rootID The root DOM ID for this node.
   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction
   * @param {number} mountDepth number of components in the owner hierarchy
   * @return {string} The computed markup.
   */
  mountComponent: ReactPerf.measure(
    'ReactDOMComponent',
    'mountComponent',
    function(rootID, transaction, mountDepth) {
      ReactComponent.Mixin.mountComponent.call(
        this,
        rootID,
        transaction,
        mountDepth
      );
      assertValidProps(this.props);
      var closeTag = omittedCloseTags[this._tag] ? '' : '</' + this._tag + '>';
      return (
        this._createOpenTagMarkupAndPutListeners(transaction) +
        this._createContentMarkup(transaction) +
        closeTag
      );
    }
  ),

  /**
   * Creates markup for the open tag and all attributes.
   *
   * This method has side effects because events get registered.
   *
   * Iterating over object properties is faster than iterating over arrays.
   * @see http://jsperf.com/obj-vs-arr-iteration
   *
   * @private
   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction
   * @return {string} Markup of opening tag.
   */
  _createOpenTagMarkupAndPutListeners: function(transaction) {
    var props = this.props;
    var ret = '<' + this._tag;

    for (var propKey in props) {
      if (!props.hasOwnProperty(propKey)) {
        continue;
      }
      var propValue = props[propKey];
      if (propValue == null) {
        continue;
      }
      if (registrationNameModules.hasOwnProperty(propKey)) {
        putListener(this._rootNodeID, propKey, propValue, transaction);
      } else {
        if (propKey === STYLE) {
          if (propValue) {
            propValue = props.style = assign({}, props.style);
          }
          propValue = CSSPropertyOperations.createMarkupForStyles(propValue);
        }
        var markup =
          DOMPropertyOperations.createMarkupForProperty(propKey, propValue);
        if (markup) {
          ret += ' ' + markup;
        }
      }
    }

    // For static pages, no need to put React ID and checksum. Saves lots of
    // bytes.
    if (transaction.renderToStaticMarkup) {
      return ret + '>';
    }

    var markupForID = DOMPropertyOperations.createMarkupForID(this._rootNodeID);
    return ret + ' ' + markupForID + '>';
  },

  /**
   * Creates markup for the content between the tags.
   *
   * @private
   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction
   * @return {string} Content markup.
   */
  _createContentMarkup: function(transaction) {
    // Intentional use of != to avoid catching zero/false.
    var innerHTML = this.props.dangerouslySetInnerHTML;
    if (innerHTML != null) {
      if (innerHTML.__html != null) {
        return innerHTML.__html;
      }
    } else {
      var contentToUse =
        CONTENT_TYPES[typeof this.props.children] ? this.props.children : null;
      var childrenToUse = contentToUse != null ? null : this.props.children;
      if (contentToUse != null) {
        return escapeTextForBrowser(contentToUse);
      } else if (childrenToUse != null) {
        var mountImages = this.mountChildren(
          childrenToUse,
          transaction
        );
        return mountImages.join('');
      }
    }
    return '';
  },

  receiveComponent: function(nextElement, transaction) {
    if (nextElement === this._currentElement &&
        nextElement._owner != null) {
      // Since elements are immutable after the owner is rendered,
      // we can do a cheap identity compare here to determine if this is a
      // superfluous reconcile. It's possible for state to be mutable but such
      // change should trigger an update of the owner which would recreate
      // the element. We explicitly check for the existence of an owner since
      // it's possible for a element created outside a composite to be
      // deeply mutated and reused.
      return;
    }

    ReactComponent.Mixin.receiveComponent.call(
      this,
      nextElement,
      transaction
    );
  },

  /**
   * Updates a native DOM component after it has already been allocated and
   * attached to the DOM. Reconciles the root DOM node, then recurses.
   *
   * @param {ReactReconcileTransaction} transaction
   * @param {ReactElement} prevElement
   * @internal
   * @overridable
   */
  updateComponent: ReactPerf.measure(
    'ReactDOMComponent',
    'updateComponent',
    function(transaction, prevElement) {
      assertValidProps(this._currentElement.props);
      ReactComponent.Mixin.updateComponent.call(
        this,
        transaction,
        prevElement
      );
      this._updateDOMProperties(prevElement.props, transaction);
      this._updateDOMChildren(prevElement.props, transaction);
    }
  ),

  /**
   * Reconciles the properties by detecting differences in property values and
   * updating the DOM as necessary. This function is probably the single most
   * critical path for performance optimization.
   *
   * TODO: Benchmark whether checking for changed values in memory actually
   *       improves performance (especially statically positioned elements).
   * TODO: Benchmark the effects of putting this at the top since 99% of props
   *       do not change for a given reconciliation.
   * TODO: Benchmark areas that can be improved with caching.
   *
   * @private
   * @param {object} lastProps
   * @param {ReactReconcileTransaction} transaction
   */
  _updateDOMProperties: function(lastProps, transaction) {
    var nextProps = this.props;
    var propKey;
    var styleName;
    var styleUpdates;
    for (propKey in lastProps) {
      if (nextProps.hasOwnProperty(propKey) ||
         !lastProps.hasOwnProperty(propKey)) {
        continue;
      }
      if (propKey === STYLE) {
        var lastStyle = lastProps[propKey];
        for (styleName in lastStyle) {
          if (lastStyle.hasOwnProperty(styleName)) {
            styleUpdates = styleUpdates || {};
            styleUpdates[styleName] = '';
          }
        }
      } else if (registrationNameModules.hasOwnProperty(propKey)) {
        deleteListener(this._rootNodeID, propKey);
      } else if (
          DOMProperty.isStandardName[propKey] ||
          DOMProperty.isCustomAttribute(propKey)) {
        ReactComponent.BackendIDOperations.deletePropertyByID(
          this._rootNodeID,
          propKey
        );
      }
    }
    for (propKey in nextProps) {
      var nextProp = nextProps[propKey];
      var lastProp = lastProps[propKey];
      if (!nextProps.hasOwnProperty(propKey) || nextProp === lastProp) {
        continue;
      }
      if (propKey === STYLE) {
        if (nextProp) {
          nextProp = nextProps.style = assign({}, nextProp);
        }
        if (lastProp) {
          // Unset styles on `lastProp` but not on `nextProp`.
          for (styleName in lastProp) {
            if (lastProp.hasOwnProperty(styleName) &&
                (!nextProp || !nextProp.hasOwnProperty(styleName))) {
              styleUpdates = styleUpdates || {};
              styleUpdates[styleName] = '';
            }
          }
          // Update styles that changed since `lastProp`.
          for (styleName in nextProp) {
            if (nextProp.hasOwnProperty(styleName) &&
                lastProp[styleName] !== nextProp[styleName]) {
              styleUpdates = styleUpdates || {};
              styleUpdates[styleName] = nextProp[styleName];
            }
          }
        } else {
          // Relies on `updateStylesByID` not mutating `styleUpdates`.
          styleUpdates = nextProp;
        }
      } else if (registrationNameModules.hasOwnProperty(propKey)) {
        putListener(this._rootNodeID, propKey, nextProp, transaction);
      } else if (
          DOMProperty.isStandardName[propKey] ||
          DOMProperty.isCustomAttribute(propKey)) {
        ReactComponent.BackendIDOperations.updatePropertyByID(
          this._rootNodeID,
          propKey,
          nextProp
        );
      }
    }
    if (styleUpdates) {
      ReactComponent.BackendIDOperations.updateStylesByID(
        this._rootNodeID,
        styleUpdates
      );
    }
  },

  /**
   * Reconciles the children with the various properties that affect the
   * children content.
   *
   * @param {object} lastProps
   * @param {ReactReconcileTransaction} transaction
   */
  _updateDOMChildren: function(lastProps, transaction) {
    var nextProps = this.props;

    var lastContent =
      CONTENT_TYPES[typeof lastProps.children] ? lastProps.children : null;
    var nextContent =
      CONTENT_TYPES[typeof nextProps.children] ? nextProps.children : null;

    var lastHtml =
      lastProps.dangerouslySetInnerHTML &&
      lastProps.dangerouslySetInnerHTML.__html;
    var nextHtml =
      nextProps.dangerouslySetInnerHTML &&
      nextProps.dangerouslySetInnerHTML.__html;

    // Note the use of `!=` which checks for null or undefined.
    var lastChildren = lastContent != null ? null : lastProps.children;
    var nextChildren = nextContent != null ? null : nextProps.children;

    // If we're switching from children to content/html or vice versa, remove
    // the old content
    var lastHasContentOrHtml = lastContent != null || lastHtml != null;
    var nextHasContentOrHtml = nextContent != null || nextHtml != null;
    if (lastChildren != null && nextChildren == null) {
      this.updateChildren(null, transaction);
    } else if (lastHasContentOrHtml && !nextHasContentOrHtml) {
      this.updateTextContent('');
    }

    if (nextContent != null) {
      if (lastContent !== nextContent) {
        this.updateTextContent('' + nextContent);
      }
    } else if (nextHtml != null) {
      if (lastHtml !== nextHtml) {
        ReactComponent.BackendIDOperations.updateInnerHTMLByID(
          this._rootNodeID,
          nextHtml
        );
      }
    } else if (nextChildren != null) {
      this.updateChildren(nextChildren, transaction);
    }
  },

  /**
   * Destroys all event registrations for this instance. Does not remove from
   * the DOM. That must be done by the parent.
   *
   * @internal
   */
  unmountComponent: function() {
    this.unmountChildren();
    ReactBrowserEventEmitter.deleteAllListeners(this._rootNodeID);
    ReactComponent.Mixin.unmountComponent.call(this);
  }

 };

 assign(
  ReactDOMComponent.prototype,
  ReactComponent.Mixin,
  ReactDOMComponent.Mixin,
  ReactMultiChild.Mixin,
  ReactBrowserComponentMixin
 );

 module.exports = ReactDOMComponent;

 },{"./CSSPropertyOperations":5,"./DOMProperty":11,"./DOMPropertyOperations":12,"./Object.assign":27,"./ReactBrowserComponentMixin":29,"./ReactBrowserEventEmitter":30,"./ReactComponent":32,"./ReactMount":63,"./ReactMultiChild":64,"./ReactPerf":68,"./escapeTextForBrowser":109,"./invariant":126,"./isEventSupported":127,"./keyOf":133,"./monitorCodeUse":136}],40:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMForm
 */

 "use strict";

 var EventConstants = _dereq_("./EventConstants");
 var LocalEventTrapMixin = _dereq_("./LocalEventTrapMixin");
 var ReactBrowserComponentMixin = _dereq_("./ReactBrowserComponentMixin");
 var ReactCompositeComponent = _dereq_("./ReactCompositeComponent");
 var ReactElement = _dereq_("./ReactElement");
 var ReactDOM = _dereq_("./ReactDOM");

 // Store a reference to the <form> `ReactDOMComponent`. TODO: use string
 var form = ReactElement.createFactory(ReactDOM.form.type);

 /**
 * Since onSubmit doesn't bubble OR capture on the top level in IE8, we need
 * to capture it on the <form> element itself. There are lots of hacks we could
 * do to accomplish this, but the most reliable is to make <form> a
 * composite component and use `componentDidMount` to attach the event handlers.
 */
 var ReactDOMForm = ReactCompositeComponent.createClass({
  displayName: 'ReactDOMForm',

  mixins: [ReactBrowserComponentMixin, LocalEventTrapMixin],

  render: function() {
    // TODO: Instead of using `ReactDOM` directly, we should use JSX. However,
    // `jshint` fails to parse JSX so in order for linting to work in the open
    // source repo, we need to just use `ReactDOM.form`.
    return form(this.props);
  },

  componentDidMount: function() {
    this.trapBubbledEvent(EventConstants.topLevelTypes.topReset, 'reset');
    this.trapBubbledEvent(EventConstants.topLevelTypes.topSubmit, 'submit');
  }
 });

 module.exports = ReactDOMForm;

 },{"./EventConstants":16,"./LocalEventTrapMixin":25,"./ReactBrowserComponentMixin":29,"./ReactCompositeComponent":34,"./ReactDOM":37,"./ReactElement":52}],41:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMIDOperations
 * @typechecks static-only
 */

 /*jslint evil: true */

 "use strict";

 var CSSPropertyOperations = _dereq_("./CSSPropertyOperations");
 var DOMChildrenOperations = _dereq_("./DOMChildrenOperations");
 var DOMPropertyOperations = _dereq_("./DOMPropertyOperations");
 var ReactMount = _dereq_("./ReactMount");
 var ReactPerf = _dereq_("./ReactPerf");

 var invariant = _dereq_("./invariant");
 var setInnerHTML = _dereq_("./setInnerHTML");

 /**
 * Errors for properties that should not be updated with `updatePropertyById()`.
 *
 * @type {object}
 * @private
 */
 var INVALID_PROPERTY_ERRORS = {
  dangerouslySetInnerHTML:
    '`dangerouslySetInnerHTML` must be set using `updateInnerHTMLByID()`.',
  style: '`style` must be set using `updateStylesByID()`.'
 };

 /**
 * Operations used to process updates to DOM nodes. This is made injectable via
 * `ReactComponent.BackendIDOperations`.
 */
 var ReactDOMIDOperations = {

  /**
   * Updates a DOM node with new property values. This should only be used to
   * update DOM properties in `DOMProperty`.
   *
   * @param {string} id ID of the node to update.
   * @param {string} name A valid property name, see `DOMProperty`.
   * @param {*} value New value of the property.
   * @internal
   */
  updatePropertyByID: ReactPerf.measure(
    'ReactDOMIDOperations',
    'updatePropertyByID',
    function(id, name, value) {
      var node = ReactMount.getNode(id);
      ("production" !== "development" ? invariant(
        !INVALID_PROPERTY_ERRORS.hasOwnProperty(name),
        'updatePropertyByID(...): %s',
        INVALID_PROPERTY_ERRORS[name]
      ) : invariant(!INVALID_PROPERTY_ERRORS.hasOwnProperty(name)));

      // If we're updating to null or undefined, we should remove the property
      // from the DOM node instead of inadvertantly setting to a string. This
      // brings us in line with the same behavior we have on initial render.
      if (value != null) {
        DOMPropertyOperations.setValueForProperty(node, name, value);
      } else {
        DOMPropertyOperations.deleteValueForProperty(node, name);
      }
    }
  ),

  /**
   * Updates a DOM node to remove a property. This should only be used to remove
   * DOM properties in `DOMProperty`.
   *
   * @param {string} id ID of the node to update.
   * @param {string} name A property name to remove, see `DOMProperty`.
   * @internal
   */
  deletePropertyByID: ReactPerf.measure(
    'ReactDOMIDOperations',
    'deletePropertyByID',
    function(id, name, value) {
      var node = ReactMount.getNode(id);
      ("production" !== "development" ? invariant(
        !INVALID_PROPERTY_ERRORS.hasOwnProperty(name),
        'updatePropertyByID(...): %s',
        INVALID_PROPERTY_ERRORS[name]
      ) : invariant(!INVALID_PROPERTY_ERRORS.hasOwnProperty(name)));
      DOMPropertyOperations.deleteValueForProperty(node, name, value);
    }
  ),

  /**
   * Updates a DOM node with new style values. If a value is specified as '',
   * the corresponding style property will be unset.
   *
   * @param {string} id ID of the node to update.
   * @param {object} styles Mapping from styles to values.
   * @internal
   */
  updateStylesByID: ReactPerf.measure(
    'ReactDOMIDOperations',
    'updateStylesByID',
    function(id, styles) {
      var node = ReactMount.getNode(id);
      CSSPropertyOperations.setValueForStyles(node, styles);
    }
  ),

  /**
   * Updates a DOM node's innerHTML.
   *
   * @param {string} id ID of the node to update.
   * @param {string} html An HTML string.
   * @internal
   */
  updateInnerHTMLByID: ReactPerf.measure(
    'ReactDOMIDOperations',
    'updateInnerHTMLByID',
    function(id, html) {
      var node = ReactMount.getNode(id);
      setInnerHTML(node, html);
    }
  ),

  /**
   * Updates a DOM node's text content set by `props.content`.
   *
   * @param {string} id ID of the node to update.
   * @param {string} content Text content.
   * @internal
   */
  updateTextContentByID: ReactPerf.measure(
    'ReactDOMIDOperations',
    'updateTextContentByID',
    function(id, content) {
      var node = ReactMount.getNode(id);
      DOMChildrenOperations.updateTextContent(node, content);
    }
  ),

  /**
   * Replaces a DOM node that exists in the document with markup.
   *
   * @param {string} id ID of child to be replaced.
   * @param {string} markup Dangerous markup to inject in place of child.
   * @internal
   * @see {Danger.dangerouslyReplaceNodeWithMarkup}
   */
  dangerouslyReplaceNodeWithMarkupByID: ReactPerf.measure(
    'ReactDOMIDOperations',
    'dangerouslyReplaceNodeWithMarkupByID',
    function(id, markup) {
      var node = ReactMount.getNode(id);
      DOMChildrenOperations.dangerouslyReplaceNodeWithMarkup(node, markup);
    }
  ),

  /**
   * Updates a component's children by processing a series of updates.
   *
   * @param {array<object>} updates List of update configurations.
   * @param {array<string>} markup List of markup strings.
   * @internal
   */
  dangerouslyProcessChildrenUpdates: ReactPerf.measure(
    'ReactDOMIDOperations',
    'dangerouslyProcessChildrenUpdates',
    function(updates, markup) {
      for (var i = 0; i < updates.length; i++) {
        updates[i].parentNode = ReactMount.getNode(updates[i].parentID);
      }
      DOMChildrenOperations.processUpdates(updates, markup);
    }
  )
 };

 module.exports = ReactDOMIDOperations;

 },{"./CSSPropertyOperations":5,"./DOMChildrenOperations":10,"./DOMPropertyOperations":12,"./ReactMount":63,"./ReactPerf":68,"./invariant":126,"./setInnerHTML":140}],42:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMImg
 */

 "use strict";

 var EventConstants = _dereq_("./EventConstants");
 var LocalEventTrapMixin = _dereq_("./LocalEventTrapMixin");
 var ReactBrowserComponentMixin = _dereq_("./ReactBrowserComponentMixin");
 var ReactCompositeComponent = _dereq_("./ReactCompositeComponent");
 var ReactElement = _dereq_("./ReactElement");
 var ReactDOM = _dereq_("./ReactDOM");

 // Store a reference to the <img> `ReactDOMComponent`. TODO: use string
 var img = ReactElement.createFactory(ReactDOM.img.type);

 /**
 * Since onLoad doesn't bubble OR capture on the top level in IE8, we need to
 * capture it on the <img> element itself. There are lots of hacks we could do
 * to accomplish this, but the most reliable is to make <img> a composite
 * component and use `componentDidMount` to attach the event handlers.
 */
 var ReactDOMImg = ReactCompositeComponent.createClass({
  displayName: 'ReactDOMImg',
  tagName: 'IMG',

  mixins: [ReactBrowserComponentMixin, LocalEventTrapMixin],

  render: function() {
    return img(this.props);
  },

  componentDidMount: function() {
    this.trapBubbledEvent(EventConstants.topLevelTypes.topLoad, 'load');
    this.trapBubbledEvent(EventConstants.topLevelTypes.topError, 'error');
  }
 });

 module.exports = ReactDOMImg;

 },{"./EventConstants":16,"./LocalEventTrapMixin":25,"./ReactBrowserComponentMixin":29,"./ReactCompositeComponent":34,"./ReactDOM":37,"./ReactElement":52}],43:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMInput
 */

 "use strict";

 var AutoFocusMixin = _dereq_("./AutoFocusMixin");
 var DOMPropertyOperations = _dereq_("./DOMPropertyOperations");
 var LinkedValueUtils = _dereq_("./LinkedValueUtils");
 var ReactBrowserComponentMixin = _dereq_("./ReactBrowserComponentMixin");
 var ReactCompositeComponent = _dereq_("./ReactCompositeComponent");
 var ReactElement = _dereq_("./ReactElement");
 var ReactDOM = _dereq_("./ReactDOM");
 var ReactMount = _dereq_("./ReactMount");
 var ReactUpdates = _dereq_("./ReactUpdates");

 var assign = _dereq_("./Object.assign");
 var invariant = _dereq_("./invariant");

 // Store a reference to the <input> `ReactDOMComponent`. TODO: use string
 var input = ReactElement.createFactory(ReactDOM.input.type);

 var instancesByReactID = {};

 function forceUpdateIfMounted() {
  /*jshint validthis:true */
  if (this.isMounted()) {
    this.forceUpdate();
  }
 }

 /**
 * Implements an <input> native component that allows setting these optional
 * props: `checked`, `value`, `defaultChecked`, and `defaultValue`.
 *
 * If `checked` or `value` are not supplied (or null/undefined), user actions
 * that affect the checked state or value will trigger updates to the element.
 *
 * If they are supplied (and not null/undefined), the rendered element will not
 * trigger updates to the element. Instead, the props must change in order for
 * the rendered element to be updated.
 *
 * The rendered element will be initialized as unchecked (or `defaultChecked`)
 * with an empty value (or `defaultValue`).
 *
 * @see http://www.w3.org/TR/2012/WD-html5-20121025/the-input-element.html
 */
 var ReactDOMInput = ReactCompositeComponent.createClass({
  displayName: 'ReactDOMInput',

  mixins: [AutoFocusMixin, LinkedValueUtils.Mixin, ReactBrowserComponentMixin],

  getInitialState: function() {
    var defaultValue = this.props.defaultValue;
    return {
      initialChecked: this.props.defaultChecked || false,
      initialValue: defaultValue != null ? defaultValue : null
    };
  },

  render: function() {
    // Clone `this.props` so we don't mutate the input.
    var props = assign({}, this.props);

    props.defaultChecked = null;
    props.defaultValue = null;

    var value = LinkedValueUtils.getValue(this);
    props.value = value != null ? value : this.state.initialValue;

    var checked = LinkedValueUtils.getChecked(this);
    props.checked = checked != null ? checked : this.state.initialChecked;

    props.onChange = this._handleChange;

    return input(props, this.props.children);
  },

  componentDidMount: function() {
    var id = ReactMount.getID(this.getDOMNode());
    instancesByReactID[id] = this;
  },

  componentWillUnmount: function() {
    var rootNode = this.getDOMNode();
    var id = ReactMount.getID(rootNode);
    delete instancesByReactID[id];
  },

  componentDidUpdate: function(prevProps, prevState, prevContext) {
    var rootNode = this.getDOMNode();
    if (this.props.checked != null) {
      DOMPropertyOperations.setValueForProperty(
        rootNode,
        'checked',
        this.props.checked || false
      );
    }

    var value = LinkedValueUtils.getValue(this);
    if (value != null) {
      // Cast `value` to a string to ensure the value is set correctly. While
      // browsers typically do this as necessary, jsdom doesn't.
      DOMPropertyOperations.setValueForProperty(rootNode, 'value', '' + value);
    }
  },

  _handleChange: function(event) {
    var returnValue;
    var onChange = LinkedValueUtils.getOnChange(this);
    if (onChange) {
      returnValue = onChange.call(this, event);
    }
    // Here we use asap to wait until all updates have propagated, which
    // is important when using controlled components within layers:
    // https://github.com/facebook/react/issues/1698
    ReactUpdates.asap(forceUpdateIfMounted, this);

    var name = this.props.name;
    if (this.props.type === 'radio' && name != null) {
      var rootNode = this.getDOMNode();
      var queryRoot = rootNode;

      while (queryRoot.parentNode) {
        queryRoot = queryRoot.parentNode;
      }

      // If `rootNode.form` was non-null, then we could try `form.elements`,
      // but that sometimes behaves strangely in IE8. We could also try using
      // `form.getElementsByName`, but that will only return direct children
      // and won't include inputs that use the HTML5 `form=` attribute. Since
      // the input might not even be in a form, let's just use the global
      // `querySelectorAll` to ensure we don't miss anything.
      var group = queryRoot.querySelectorAll(
        'input[name=' + JSON.stringify('' + name) + '][type="radio"]');

      for (var i = 0, groupLen = group.length; i < groupLen; i++) {
        var otherNode = group[i];
        if (otherNode === rootNode ||
            otherNode.form !== rootNode.form) {
          continue;
        }
        var otherID = ReactMount.getID(otherNode);
        ("production" !== "development" ? invariant(
          otherID,
          'ReactDOMInput: Mixing React and non-React radio inputs with the ' +
          'same `name` is not supported.'
        ) : invariant(otherID));
        var otherInstance = instancesByReactID[otherID];
        ("production" !== "development" ? invariant(
          otherInstance,
          'ReactDOMInput: Unknown radio button ID %s.',
          otherID
        ) : invariant(otherInstance));
        // If this is a controlled radio button group, forcing the input that
        // was previously checked to update will cause it to be come re-checked
        // as appropriate.
        ReactUpdates.asap(forceUpdateIfMounted, otherInstance);
      }
    }

    return returnValue;
  }

 });

 module.exports = ReactDOMInput;

 },{"./AutoFocusMixin":2,"./DOMPropertyOperations":12,"./LinkedValueUtils":24,"./Object.assign":27,"./ReactBrowserComponentMixin":29,"./ReactCompositeComponent":34,"./ReactDOM":37,"./ReactElement":52,"./ReactMount":63,"./ReactUpdates":79,"./invariant":126}],44:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMOption
 */

 "use strict";

 var ReactBrowserComponentMixin = _dereq_("./ReactBrowserComponentMixin");
 var ReactCompositeComponent = _dereq_("./ReactCompositeComponent");
 var ReactElement = _dereq_("./ReactElement");
 var ReactDOM = _dereq_("./ReactDOM");

 var warning = _dereq_("./warning");

 // Store a reference to the <option> `ReactDOMComponent`. TODO: use string
 var option = ReactElement.createFactory(ReactDOM.option.type);

 /**
 * Implements an <option> native component that warns when `selected` is set.
 */
 var ReactDOMOption = ReactCompositeComponent.createClass({
  displayName: 'ReactDOMOption',

  mixins: [ReactBrowserComponentMixin],

  componentWillMount: function() {
    // TODO (yungsters): Remove support for `selected` in <option>.
    if ("production" !== "development") {
      ("production" !== "development" ? warning(
        this.props.selected == null,
        'Use the `defaultValue` or `value` props on <select> instead of ' +
        'setting `selected` on <option>.'
      ) : null);
    }
  },

  render: function() {
    return option(this.props, this.props.children);
  }

 });

 module.exports = ReactDOMOption;

 },{"./ReactBrowserComponentMixin":29,"./ReactCompositeComponent":34,"./ReactDOM":37,"./ReactElement":52,"./warning":145}],45:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMSelect
 */

 "use strict";

 var AutoFocusMixin = _dereq_("./AutoFocusMixin");
 var LinkedValueUtils = _dereq_("./LinkedValueUtils");
 var ReactBrowserComponentMixin = _dereq_("./ReactBrowserComponentMixin");
 var ReactCompositeComponent = _dereq_("./ReactCompositeComponent");
 var ReactElement = _dereq_("./ReactElement");
 var ReactDOM = _dereq_("./ReactDOM");
 var ReactUpdates = _dereq_("./ReactUpdates");

 var assign = _dereq_("./Object.assign");

 // Store a reference to the <select> `ReactDOMComponent`. TODO: use string
 var select = ReactElement.createFactory(ReactDOM.select.type);

 function updateWithPendingValueIfMounted() {
  /*jshint validthis:true */
  if (this.isMounted()) {
    this.setState({value: this._pendingValue});
    this._pendingValue = 0;
  }
 }

 /**
 * Validation function for `value` and `defaultValue`.
 * @private
 */
 function selectValueType(props, propName, componentName) {
  if (props[propName] == null) {
    return;
  }
  if (props.multiple) {
    if (!Array.isArray(props[propName])) {
      return new Error(
        ("The `" + propName + "` prop supplied to <select> must be an array if ") +
        ("`multiple` is true.")
      );
    }
  } else {
    if (Array.isArray(props[propName])) {
      return new Error(
        ("The `" + propName + "` prop supplied to <select> must be a scalar ") +
        ("value if `multiple` is false.")
      );
    }
  }
 }

 /**
 * If `value` is supplied, updates <option> elements on mount and update.
 * @param {ReactComponent} component Instance of ReactDOMSelect
 * @param {?*} propValue For uncontrolled components, null/undefined. For
 * controlled components, a string (or with `multiple`, a list of strings).
 * @private
 */
 function updateOptions(component, propValue) {
  var multiple = component.props.multiple;
  var value = propValue != null ? propValue : component.state.value;
  var options = component.getDOMNode().options;
  var selectedValue, i, l;
  if (multiple) {
    selectedValue = {};
    for (i = 0, l = value.length; i < l; ++i) {
      selectedValue['' + value[i]] = true;
    }
  } else {
    selectedValue = '' + value;
  }
  for (i = 0, l = options.length; i < l; i++) {
    var selected = multiple ?
      selectedValue.hasOwnProperty(options[i].value) :
      options[i].value === selectedValue;

    if (selected !== options[i].selected) {
      options[i].selected = selected;
    }
  }
 }

 /**
 * Implements a <select> native component that allows optionally setting the
 * props `value` and `defaultValue`. If `multiple` is false, the prop must be a
 * string. If `multiple` is true, the prop must be an array of strings.
 *
 * If `value` is not supplied (or null/undefined), user actions that change the
 * selected option will trigger updates to the rendered options.
 *
 * If it is supplied (and not null/undefined), the rendered options will not
 * update in response to user actions. Instead, the `value` prop must change in
 * order for the rendered options to update.
 *
 * If `defaultValue` is provided, any options with the supplied values will be
 * selected.
 */
 var ReactDOMSelect = ReactCompositeComponent.createClass({
  displayName: 'ReactDOMSelect',

  mixins: [AutoFocusMixin, LinkedValueUtils.Mixin, ReactBrowserComponentMixin],

  propTypes: {
    defaultValue: selectValueType,
    value: selectValueType
  },

  getInitialState: function() {
    return {value: this.props.defaultValue || (this.props.multiple ? [] : '')};
  },

  componentWillMount: function() {
    this._pendingValue = null;
  },

  componentWillReceiveProps: function(nextProps) {
    if (!this.props.multiple && nextProps.multiple) {
      this.setState({value: [this.state.value]});
    } else if (this.props.multiple && !nextProps.multiple) {
      this.setState({value: this.state.value[0]});
    }
  },

  render: function() {
    // Clone `this.props` so we don't mutate the input.
    var props = assign({}, this.props);

    props.onChange = this._handleChange;
    props.value = null;

    return select(props, this.props.children);
  },

  componentDidMount: function() {
    updateOptions(this, LinkedValueUtils.getValue(this));
  },

  componentDidUpdate: function(prevProps) {
    var value = LinkedValueUtils.getValue(this);
    var prevMultiple = !!prevProps.multiple;
    var multiple = !!this.props.multiple;
    if (value != null || prevMultiple !== multiple) {
      updateOptions(this, value);
    }
  },

  _handleChange: function(event) {
    var returnValue;
    var onChange = LinkedValueUtils.getOnChange(this);
    if (onChange) {
      returnValue = onChange.call(this, event);
    }

    var selectedValue;
    if (this.props.multiple) {
      selectedValue = [];
      var options = event.target.options;
      for (var i = 0, l = options.length; i < l; i++) {
        if (options[i].selected) {
          selectedValue.push(options[i].value);
        }
      }
    } else {
      selectedValue = event.target.value;
    }

    this._pendingValue = selectedValue;
    ReactUpdates.asap(updateWithPendingValueIfMounted, this);
    return returnValue;
  }

 });

 module.exports = ReactDOMSelect;

 },{"./AutoFocusMixin":2,"./LinkedValueUtils":24,"./Object.assign":27,"./ReactBrowserComponentMixin":29,"./ReactCompositeComponent":34,"./ReactDOM":37,"./ReactElement":52,"./ReactUpdates":79}],46:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMSelection
 */

 "use strict";

 var ExecutionEnvironment = _dereq_("./ExecutionEnvironment");

 var getNodeForCharacterOffset = _dereq_("./getNodeForCharacterOffset");
 var getTextContentAccessor = _dereq_("./getTextContentAccessor");

 /**
 * While `isCollapsed` is available on the Selection object and `collapsed`
 * is available on the Range object, IE11 sometimes gets them wrong.
 * If the anchor/focus nodes and offsets are the same, the range is collapsed.
 */
 function isCollapsed(anchorNode, anchorOffset, focusNode, focusOffset) {
  return anchorNode === focusNode && anchorOffset === focusOffset;
 }

 /**
 * Get the appropriate anchor and focus node/offset pairs for IE.
 *
 * The catch here is that IE's selection API doesn't provide information
 * about whether the selection is forward or backward, so we have to
 * behave as though it's always forward.
 *
 * IE text differs from modern selection in that it behaves as though
 * block elements end with a new line. This means character offsets will
 * differ between the two APIs.
 *
 * @param {DOMElement} node
 * @return {object}
 */
 function getIEOffsets(node) {
  var selection = document.selection;
  var selectedRange = selection.createRange();
  var selectedLength = selectedRange.text.length;

  // Duplicate selection so we can move range without breaking user selection.
  var fromStart = selectedRange.duplicate();
  fromStart.moveToElementText(node);
  fromStart.setEndPoint('EndToStart', selectedRange);

  var startOffset = fromStart.text.length;
  var endOffset = startOffset + selectedLength;

  return {
    start: startOffset,
    end: endOffset
  };
 }

 /**
 * @param {DOMElement} node
 * @return {?object}
 */
 function getModernOffsets(node) {
  var selection = window.getSelection && window.getSelection();

  if (!selection || selection.rangeCount === 0) {
    return null;
  }

  var anchorNode = selection.anchorNode;
  var anchorOffset = selection.anchorOffset;
  var focusNode = selection.focusNode;
  var focusOffset = selection.focusOffset;

  var currentRange = selection.getRangeAt(0);

  // If the node and offset values are the same, the selection is collapsed.
  // `Selection.isCollapsed` is available natively, but IE sometimes gets
  // this value wrong.
  var isSelectionCollapsed = isCollapsed(
    selection.anchorNode,
    selection.anchorOffset,
    selection.focusNode,
    selection.focusOffset
  );

  var rangeLength = isSelectionCollapsed ? 0 : currentRange.toString().length;

  var tempRange = currentRange.cloneRange();
  tempRange.selectNodeContents(node);
  tempRange.setEnd(currentRange.startContainer, currentRange.startOffset);

  var isTempRangeCollapsed = isCollapsed(
    tempRange.startContainer,
    tempRange.startOffset,
    tempRange.endContainer,
    tempRange.endOffset
  );

  var start = isTempRangeCollapsed ? 0 : tempRange.toString().length;
  var end = start + rangeLength;

  // Detect whether the selection is backward.
  var detectionRange = document.createRange();
  detectionRange.setStart(anchorNode, anchorOffset);
  detectionRange.setEnd(focusNode, focusOffset);
  var isBackward = detectionRange.collapsed;

  return {
    start: isBackward ? end : start,
    end: isBackward ? start : end
  };
 }

 /**
 * @param {DOMElement|DOMTextNode} node
 * @param {object} offsets
 */
 function setIEOffsets(node, offsets) {
  var range = document.selection.createRange().duplicate();
  var start, end;

  if (typeof offsets.end === 'undefined') {
    start = offsets.start;
    end = start;
  } else if (offsets.start > offsets.end) {
    start = offsets.end;
    end = offsets.start;
  } else {
    start = offsets.start;
    end = offsets.end;
  }

  range.moveToElementText(node);
  range.moveStart('character', start);
  range.setEndPoint('EndToStart', range);
  range.moveEnd('character', end - start);
  range.select();
 }

 /**
 * In modern non-IE browsers, we can support both forward and backward
 * selections.
 *
 * Note: IE10+ supports the Selection object, but it does not support
 * the `extend` method, which means that even in modern IE, it's not possible
 * to programatically create a backward selection. Thus, for all IE
 * versions, we use the old IE API to create our selections.
 *
 * @param {DOMElement|DOMTextNode} node
 * @param {object} offsets
 */
 function setModernOffsets(node, offsets) {
  if (!window.getSelection) {
    return;
  }

  var selection = window.getSelection();
  var length = node[getTextContentAccessor()].length;
  var start = Math.min(offsets.start, length);
  var end = typeof offsets.end === 'undefined' ?
            start : Math.min(offsets.end, length);

  // IE 11 uses modern selection, but doesn't support the extend method.
  // Flip backward selections, so we can set with a single range.
  if (!selection.extend && start > end) {
    var temp = end;
    end = start;
    start = temp;
  }

  var startMarker = getNodeForCharacterOffset(node, start);
  var endMarker = getNodeForCharacterOffset(node, end);

  if (startMarker && endMarker) {
    var range = document.createRange();
    range.setStart(startMarker.node, startMarker.offset);
    selection.removeAllRanges();

    if (start > end) {
      selection.addRange(range);
      selection.extend(endMarker.node, endMarker.offset);
    } else {
      range.setEnd(endMarker.node, endMarker.offset);
      selection.addRange(range);
    }
  }
 }

 var useIEOffsets = ExecutionEnvironment.canUseDOM && document.selection;

 var ReactDOMSelection = {
  /**
   * @param {DOMElement} node
   */
  getOffsets: useIEOffsets ? getIEOffsets : getModernOffsets,

  /**
   * @param {DOMElement|DOMTextNode} node
   * @param {object} offsets
   */
  setOffsets: useIEOffsets ? setIEOffsets : setModernOffsets
 };

 module.exports = ReactDOMSelection;

 },{"./ExecutionEnvironment":22,"./getNodeForCharacterOffset":119,"./getTextContentAccessor":121}],47:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMTextarea
 */

 "use strict";

 var AutoFocusMixin = _dereq_("./AutoFocusMixin");
 var DOMPropertyOperations = _dereq_("./DOMPropertyOperations");
 var LinkedValueUtils = _dereq_("./LinkedValueUtils");
 var ReactBrowserComponentMixin = _dereq_("./ReactBrowserComponentMixin");
 var ReactCompositeComponent = _dereq_("./ReactCompositeComponent");
 var ReactElement = _dereq_("./ReactElement");
 var ReactDOM = _dereq_("./ReactDOM");
 var ReactUpdates = _dereq_("./ReactUpdates");

 var assign = _dereq_("./Object.assign");
 var invariant = _dereq_("./invariant");

 var warning = _dereq_("./warning");

 // Store a reference to the <textarea> `ReactDOMComponent`. TODO: use string
 var textarea = ReactElement.createFactory(ReactDOM.textarea.type);

 function forceUpdateIfMounted() {
  /*jshint validthis:true */
  if (this.isMounted()) {
    this.forceUpdate();
  }
 }

 /**
 * Implements a <textarea> native component that allows setting `value`, and
 * `defaultValue`. This differs from the traditional DOM API because value is
 * usually set as PCDATA children.
 *
 * If `value` is not supplied (or null/undefined), user actions that affect the
 * value will trigger updates to the element.
 *
 * If `value` is supplied (and not null/undefined), the rendered element will
 * not trigger updates to the element. Instead, the `value` prop must change in
 * order for the rendered element to be updated.
 *
 * The rendered element will be initialized with an empty value, the prop
 * `defaultValue` if specified, or the children content (deprecated).
 */
 var ReactDOMTextarea = ReactCompositeComponent.createClass({
  displayName: 'ReactDOMTextarea',

  mixins: [AutoFocusMixin, LinkedValueUtils.Mixin, ReactBrowserComponentMixin],

  getInitialState: function() {
    var defaultValue = this.props.defaultValue;
    // TODO (yungsters): Remove support for children content in <textarea>.
    var children = this.props.children;
    if (children != null) {
      if ("production" !== "development") {
        ("production" !== "development" ? warning(
          false,
          'Use the `defaultValue` or `value` props instead of setting ' +
          'children on <textarea>.'
        ) : null);
      }
      ("production" !== "development" ? invariant(
        defaultValue == null,
        'If you supply `defaultValue` on a <textarea>, do not pass children.'
      ) : invariant(defaultValue == null));
      if (Array.isArray(children)) {
        ("production" !== "development" ? invariant(
          children.length <= 1,
          '<textarea> can only have at most one child.'
        ) : invariant(children.length <= 1));
        children = children[0];
      }

      defaultValue = '' + children;
    }
    if (defaultValue == null) {
      defaultValue = '';
    }
    var value = LinkedValueUtils.getValue(this);
    return {
      // We save the initial value so that `ReactDOMComponent` doesn't update
      // `textContent` (unnecessary since we update value).
      // The initial value can be a boolean or object so that's why it's
      // forced to be a string.
      initialValue: '' + (value != null ? value : defaultValue)
    };
  },

  render: function() {
    // Clone `this.props` so we don't mutate the input.
    var props = assign({}, this.props);

    ("production" !== "development" ? invariant(
      props.dangerouslySetInnerHTML == null,
      '`dangerouslySetInnerHTML` does not make sense on <textarea>.'
    ) : invariant(props.dangerouslySetInnerHTML == null));

    props.defaultValue = null;
    props.value = null;
    props.onChange = this._handleChange;

    // Always set children to the same thing. In IE9, the selection range will
    // get reset if `textContent` is mutated.
    return textarea(props, this.state.initialValue);
  },

  componentDidUpdate: function(prevProps, prevState, prevContext) {
    var value = LinkedValueUtils.getValue(this);
    if (value != null) {
      var rootNode = this.getDOMNode();
      // Cast `value` to a string to ensure the value is set correctly. While
      // browsers typically do this as necessary, jsdom doesn't.
      DOMPropertyOperations.setValueForProperty(rootNode, 'value', '' + value);
    }
  },

  _handleChange: function(event) {
    var returnValue;
    var onChange = LinkedValueUtils.getOnChange(this);
    if (onChange) {
      returnValue = onChange.call(this, event);
    }
    ReactUpdates.asap(forceUpdateIfMounted, this);
    return returnValue;
  }

 });

 module.exports = ReactDOMTextarea;

 },{"./AutoFocusMixin":2,"./DOMPropertyOperations":12,"./LinkedValueUtils":24,"./Object.assign":27,"./ReactBrowserComponentMixin":29,"./ReactCompositeComponent":34,"./ReactDOM":37,"./ReactElement":52,"./ReactUpdates":79,"./invariant":126,"./warning":145}],48:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDefaultBatchingStrategy
 */

 "use strict";

 var ReactUpdates = _dereq_("./ReactUpdates");
 var Transaction = _dereq_("./Transaction");

 var assign = _dereq_("./Object.assign");
 var emptyFunction = _dereq_("./emptyFunction");

 var RESET_BATCHED_UPDATES = {
  initialize: emptyFunction,
  close: function() {
    ReactDefaultBatchingStrategy.isBatchingUpdates = false;
  }
 };

 var FLUSH_BATCHED_UPDATES = {
  initialize: emptyFunction,
  close: ReactUpdates.flushBatchedUpdates.bind(ReactUpdates)
 };

 var TRANSACTION_WRAPPERS = [FLUSH_BATCHED_UPDATES, RESET_BATCHED_UPDATES];

 function ReactDefaultBatchingStrategyTransaction() {
  this.reinitializeTransaction();
 }

 assign(
  ReactDefaultBatchingStrategyTransaction.prototype,
  Transaction.Mixin,
  {
    getTransactionWrappers: function() {
      return TRANSACTION_WRAPPERS;
    }
  }
 );

 var transaction = new ReactDefaultBatchingStrategyTransaction();

 var ReactDefaultBatchingStrategy = {
  isBatchingUpdates: false,

  /**
   * Call the provided function in a context within which calls to `setState`
   * and friends are batched such that components aren't updated unnecessarily.
   */
  batchedUpdates: function(callback, a, b) {
    var alreadyBatchingUpdates = ReactDefaultBatchingStrategy.isBatchingUpdates;

    ReactDefaultBatchingStrategy.isBatchingUpdates = true;

    // The code is written this way to avoid extra allocations
    if (alreadyBatchingUpdates) {
      callback(a, b);
    } else {
      transaction.perform(callback, null, a, b);
    }
  }
 };

 module.exports = ReactDefaultBatchingStrategy;

 },{"./Object.assign":27,"./ReactUpdates":79,"./Transaction":95,"./emptyFunction":107}],49:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDefaultInjection
 */

 "use strict";

 var BeforeInputEventPlugin = _dereq_("./BeforeInputEventPlugin");
 var ChangeEventPlugin = _dereq_("./ChangeEventPlugin");
 var ClientReactRootIndex = _dereq_("./ClientReactRootIndex");
 var CompositionEventPlugin = _dereq_("./CompositionEventPlugin");
 var DefaultEventPluginOrder = _dereq_("./DefaultEventPluginOrder");
 var EnterLeaveEventPlugin = _dereq_("./EnterLeaveEventPlugin");
 var ExecutionEnvironment = _dereq_("./ExecutionEnvironment");
 var HTMLDOMPropertyConfig = _dereq_("./HTMLDOMPropertyConfig");
 var MobileSafariClickEventPlugin = _dereq_("./MobileSafariClickEventPlugin");
 var ReactBrowserComponentMixin = _dereq_("./ReactBrowserComponentMixin");
 var ReactComponentBrowserEnvironment =
  _dereq_("./ReactComponentBrowserEnvironment");
 var ReactDefaultBatchingStrategy = _dereq_("./ReactDefaultBatchingStrategy");
 var ReactDOMComponent = _dereq_("./ReactDOMComponent");
 var ReactDOMButton = _dereq_("./ReactDOMButton");
 var ReactDOMForm = _dereq_("./ReactDOMForm");
 var ReactDOMImg = _dereq_("./ReactDOMImg");
 var ReactDOMInput = _dereq_("./ReactDOMInput");
 var ReactDOMOption = _dereq_("./ReactDOMOption");
 var ReactDOMSelect = _dereq_("./ReactDOMSelect");
 var ReactDOMTextarea = _dereq_("./ReactDOMTextarea");
 var ReactEventListener = _dereq_("./ReactEventListener");
 var ReactInjection = _dereq_("./ReactInjection");
 var ReactInstanceHandles = _dereq_("./ReactInstanceHandles");
 var ReactMount = _dereq_("./ReactMount");
 var SelectEventPlugin = _dereq_("./SelectEventPlugin");
 var ServerReactRootIndex = _dereq_("./ServerReactRootIndex");
 var SimpleEventPlugin = _dereq_("./SimpleEventPlugin");
 var SVGDOMPropertyConfig = _dereq_("./SVGDOMPropertyConfig");

 var createFullPageComponent = _dereq_("./createFullPageComponent");

 function inject() {
  ReactInjection.EventEmitter.injectReactEventListener(
    ReactEventListener
  );

  /**
   * Inject modules for resolving DOM hierarchy and plugin ordering.
   */
  ReactInjection.EventPluginHub.injectEventPluginOrder(DefaultEventPluginOrder);
  ReactInjection.EventPluginHub.injectInstanceHandle(ReactInstanceHandles);
  ReactInjection.EventPluginHub.injectMount(ReactMount);

  /**
   * Some important event plugins included by default (without having to require
   * them).
   */
  ReactInjection.EventPluginHub.injectEventPluginsByName({
    SimpleEventPlugin: SimpleEventPlugin,
    EnterLeaveEventPlugin: EnterLeaveEventPlugin,
    ChangeEventPlugin: ChangeEventPlugin,
    CompositionEventPlugin: CompositionEventPlugin,
    MobileSafariClickEventPlugin: MobileSafariClickEventPlugin,
    SelectEventPlugin: SelectEventPlugin,
    BeforeInputEventPlugin: BeforeInputEventPlugin
  });

  ReactInjection.NativeComponent.injectGenericComponentClass(
    ReactDOMComponent
  );

  ReactInjection.NativeComponent.injectComponentClasses({
    'button': ReactDOMButton,
    'form': ReactDOMForm,
    'img': ReactDOMImg,
    'input': ReactDOMInput,
    'option': ReactDOMOption,
    'select': ReactDOMSelect,
    'textarea': ReactDOMTextarea,

    'html': createFullPageComponent('html'),
    'head': createFullPageComponent('head'),
    'body': createFullPageComponent('body')
  });

  // This needs to happen after createFullPageComponent() otherwise the mixin
  // gets double injected.
  ReactInjection.CompositeComponent.injectMixin(ReactBrowserComponentMixin);

  ReactInjection.DOMProperty.injectDOMPropertyConfig(HTMLDOMPropertyConfig);
  ReactInjection.DOMProperty.injectDOMPropertyConfig(SVGDOMPropertyConfig);

  ReactInjection.EmptyComponent.injectEmptyComponent('noscript');

  ReactInjection.Updates.injectReconcileTransaction(
    ReactComponentBrowserEnvironment.ReactReconcileTransaction
  );
  ReactInjection.Updates.injectBatchingStrategy(
    ReactDefaultBatchingStrategy
  );

  ReactInjection.RootIndex.injectCreateReactRootIndex(
    ExecutionEnvironment.canUseDOM ?
      ClientReactRootIndex.createReactRootIndex :
      ServerReactRootIndex.createReactRootIndex
  );

  ReactInjection.Component.injectEnvironment(ReactComponentBrowserEnvironment);

  if ("production" !== "development") {
    var url = (ExecutionEnvironment.canUseDOM && window.location.href) || '';
    if ((/[?&]react_perf\b/).test(url)) {
      var ReactDefaultPerf = _dereq_("./ReactDefaultPerf");
      ReactDefaultPerf.start();
    }
  }
 }

 module.exports = {
  inject: inject
 };

 },{"./BeforeInputEventPlugin":3,"./ChangeEventPlugin":7,"./ClientReactRootIndex":8,"./CompositionEventPlugin":9,"./DefaultEventPluginOrder":14,"./EnterLeaveEventPlugin":15,"./ExecutionEnvironment":22,"./HTMLDOMPropertyConfig":23,"./MobileSafariClickEventPlugin":26,"./ReactBrowserComponentMixin":29,"./ReactComponentBrowserEnvironment":33,"./ReactDOMButton":38,"./ReactDOMComponent":39,"./ReactDOMForm":40,"./ReactDOMImg":42,"./ReactDOMInput":43,"./ReactDOMOption":44,"./ReactDOMSelect":45,"./ReactDOMTextarea":47,"./ReactDefaultBatchingStrategy":48,"./ReactDefaultPerf":50,"./ReactEventListener":57,"./ReactInjection":58,"./ReactInstanceHandles":60,"./ReactMount":63,"./SVGDOMPropertyConfig":80,"./SelectEventPlugin":81,"./ServerReactRootIndex":82,"./SimpleEventPlugin":83,"./createFullPageComponent":103}],50:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDefaultPerf
 * @typechecks static-only
 */

 "use strict";

 var DOMProperty = _dereq_("./DOMProperty");
 var ReactDefaultPerfAnalysis = _dereq_("./ReactDefaultPerfAnalysis");
 var ReactMount = _dereq_("./ReactMount");
 var ReactPerf = _dereq_("./ReactPerf");

 var performanceNow = _dereq_("./performanceNow");

 function roundFloat(val) {
  return Math.floor(val * 100) / 100;
 }

 function addValue(obj, key, val) {
  obj[key] = (obj[key] || 0) + val;
 }

 var ReactDefaultPerf = {
  _allMeasurements: [], // last item in the list is the current one
  _mountStack: [0],
  _injected: false,

  start: function() {
    if (!ReactDefaultPerf._injected) {
      ReactPerf.injection.injectMeasure(ReactDefaultPerf.measure);
    }

    ReactDefaultPerf._allMeasurements.length = 0;
    ReactPerf.enableMeasure = true;
  },

  stop: function() {
    ReactPerf.enableMeasure = false;
  },

  getLastMeasurements: function() {
    return ReactDefaultPerf._allMeasurements;
  },

  printExclusive: function(measurements) {
    measurements = measurements || ReactDefaultPerf._allMeasurements;
    var summary = ReactDefaultPerfAnalysis.getExclusiveSummary(measurements);
    console.table(summary.map(function(item) {
      return {
        'Component class name': item.componentName,
        'Total inclusive time (ms)': roundFloat(item.inclusive),
        'Exclusive mount time (ms)': roundFloat(item.exclusive),
        'Exclusive render time (ms)': roundFloat(item.render),
        'Mount time per instance (ms)': roundFloat(item.exclusive / item.count),
        'Render time per instance (ms)': roundFloat(item.render / item.count),
        'Instances': item.count
      };
    }));
    // TODO: ReactDefaultPerfAnalysis.getTotalTime() does not return the correct
    // number.
  },

  printInclusive: function(measurements) {
    measurements = measurements || ReactDefaultPerf._allMeasurements;
    var summary = ReactDefaultPerfAnalysis.getInclusiveSummary(measurements);
    console.table(summary.map(function(item) {
      return {
        'Owner > component': item.componentName,
        'Inclusive time (ms)': roundFloat(item.time),
        'Instances': item.count
      };
    }));
    console.log(
      'Total time:',
      ReactDefaultPerfAnalysis.getTotalTime(measurements).toFixed(2) + ' ms'
    );
  },

  getMeasurementsSummaryMap: function(measurements) {
    var summary = ReactDefaultPerfAnalysis.getInclusiveSummary(
      measurements,
      true
    );
    return summary.map(function(item) {
      return {
        'Owner > component': item.componentName,
        'Wasted time (ms)': item.time,
        'Instances': item.count
      };
    });
  },

  printWasted: function(measurements) {
    measurements = measurements || ReactDefaultPerf._allMeasurements;
    console.table(ReactDefaultPerf.getMeasurementsSummaryMap(measurements));
    console.log(
      'Total time:',
      ReactDefaultPerfAnalysis.getTotalTime(measurements).toFixed(2) + ' ms'
    );
  },

  printDOM: function(measurements) {
    measurements = measurements || ReactDefaultPerf._allMeasurements;
    var summary = ReactDefaultPerfAnalysis.getDOMSummary(measurements);
    console.table(summary.map(function(item) {
      var result = {};
      result[DOMProperty.ID_ATTRIBUTE_NAME] = item.id;
      result['type'] = item.type;
      result['args'] = JSON.stringify(item.args);
      return result;
    }));
    console.log(
      'Total time:',
      ReactDefaultPerfAnalysis.getTotalTime(measurements).toFixed(2) + ' ms'
    );
  },

  _recordWrite: function(id, fnName, totalTime, args) {
    // TODO: totalTime isn't that useful since it doesn't count paints/reflows
    var writes =
      ReactDefaultPerf
        ._allMeasurements[ReactDefaultPerf._allMeasurements.length - 1]
        .writes;
    writes[id] = writes[id] || [];
    writes[id].push({
      type: fnName,
      time: totalTime,
      args: args
    });
  },

  measure: function(moduleName, fnName, func) {
    return function() {for (var args=[],$__0=0,$__1=arguments.length;$__0<$__1;$__0++) args.push(arguments[$__0]);
      var totalTime;
      var rv;
      var start;

      if (fnName === '_renderNewRootComponent' ||
          fnName === 'flushBatchedUpdates') {
        // A "measurement" is a set of metrics recorded for each flush. We want
        // to group the metrics for a given flush together so we can look at the
        // components that rendered and the DOM operations that actually
        // happened to determine the amount of "wasted work" performed.
        ReactDefaultPerf._allMeasurements.push({
          exclusive: {},
          inclusive: {},
          render: {},
          counts: {},
          writes: {},
          displayNames: {},
          totalTime: 0
        });
        start = performanceNow();
        rv = func.apply(this, args);
        ReactDefaultPerf._allMeasurements[
          ReactDefaultPerf._allMeasurements.length - 1
        ].totalTime = performanceNow() - start;
        return rv;
      } else if (moduleName === 'ReactDOMIDOperations' ||
        moduleName === 'ReactComponentBrowserEnvironment') {
        start = performanceNow();
        rv = func.apply(this, args);
        totalTime = performanceNow() - start;

        if (fnName === 'mountImageIntoNode') {
          var mountID = ReactMount.getID(args[1]);
          ReactDefaultPerf._recordWrite(mountID, fnName, totalTime, args[0]);
        } else if (fnName === 'dangerouslyProcessChildrenUpdates') {
          // special format
          args[0].forEach(function(update) {
            var writeArgs = {};
            if (update.fromIndex !== null) {
              writeArgs.fromIndex = update.fromIndex;
            }
            if (update.toIndex !== null) {
              writeArgs.toIndex = update.toIndex;
            }
            if (update.textContent !== null) {
              writeArgs.textContent = update.textContent;
            }
            if (update.markupIndex !== null) {
              writeArgs.markup = args[1][update.markupIndex];
            }
            ReactDefaultPerf._recordWrite(
              update.parentID,
              update.type,
              totalTime,
              writeArgs
            );
          });
        } else {
          // basic format
          ReactDefaultPerf._recordWrite(
            args[0],
            fnName,
            totalTime,
            Array.prototype.slice.call(args, 1)
          );
        }
        return rv;
      } else if (moduleName === 'ReactCompositeComponent' && (
        fnName === 'mountComponent' ||
        fnName === 'updateComponent' || // TODO: receiveComponent()?
        fnName === '_renderValidatedComponent')) {

        var rootNodeID = fnName === 'mountComponent' ?
          args[0] :
          this._rootNodeID;
        var isRender = fnName === '_renderValidatedComponent';
        var isMount = fnName === 'mountComponent';

        var mountStack = ReactDefaultPerf._mountStack;
        var entry = ReactDefaultPerf._allMeasurements[
          ReactDefaultPerf._allMeasurements.length - 1
        ];

        if (isRender) {
          addValue(entry.counts, rootNodeID, 1);
        } else if (isMount) {
          mountStack.push(0);
        }

        start = performanceNow();
        rv = func.apply(this, args);
        totalTime = performanceNow() - start;

        if (isRender) {
          addValue(entry.render, rootNodeID, totalTime);
        } else if (isMount) {
          var subMountTime = mountStack.pop();
          mountStack[mountStack.length - 1] += totalTime;
          addValue(entry.exclusive, rootNodeID, totalTime - subMountTime);
          addValue(entry.inclusive, rootNodeID, totalTime);
        } else {
          addValue(entry.inclusive, rootNodeID, totalTime);
        }

        entry.displayNames[rootNodeID] = {
          current: this.constructor.displayName,
          owner: this._owner ? this._owner.constructor.displayName : '<root>'
        };

        return rv;
      } else {
        return func.apply(this, args);
      }
    };
  }
 };

 module.exports = ReactDefaultPerf;

 },{"./DOMProperty":11,"./ReactDefaultPerfAnalysis":51,"./ReactMount":63,"./ReactPerf":68,"./performanceNow":139}],51:[function(_dereq_,module,exports){
 /**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDefaultPerfAnalysis
 */

 var assign = _dereq_("./Object.assign");

 // Don't try to save users less than 1.2ms (a number I made up)
 var DONT_CARE_THRESHOLD = 1.2;
 var DOM_OPERATION_TYPES = {
  'mountImageIntoNode': 'set innerHTML',
  INSERT_MARKUP: 'set innerHTML',
  MOVE_EXISTING: 'move',
  REMOVE_NODE: 'remove',
  TEXT_CONTENT: 'set textContent',
  'updatePropertyByID': 'update attribute',
  'deletePropertyByID': 'delete attribute',
  'updateStylesByID': 'update styles',
  'updateInnerHTMLByID': 'set innerHTML',
  'dangerouslyReplaceNodeWithMarkupByID': 'replace'
 };

 function getTotalTime(measurements) {
  // TODO: return number of DOM ops? could be misleading.
  // TODO: measure dropped frames after reconcile?
  // TODO: log total time of each reconcile and the top-level component
  // class that triggered it.
  var totalTime = 0;
  for (var i = 0; i < measurements.length; i++) {
    var measurement = measurements[i];
    totalTime += measurement.totalTime;
  }
  return totalTime;
 }

 function getDOMSummary(measurements) {
  var items = [];
  for (var i = 0; i < measurements.length; i++) {
    var measurement = measurements[i];
    var id;

    for (id in measurement.writes) {
      measurement.writes[id].forEach(function(write) {
        items.push({
          id: id,
          type: DOM_OPERATION_TYPES[write.type] || write.type,
          args: write.args
        });
      });
    }
  }
  return items;
 }

 function getExclusiveSummary(measurements) {
  var candidates = {};
  var displayName;

  for (var i = 0; i < measurements.length; i++) {
    var measurement = measurements[i];
    var allIDs = assign(
      {},
      measurement.exclusive,
      measurement.inclusive
    );

    for (var id in allIDs) {
      displayName = measurement.displayNames[id].current;

      candidates[displayName] = candidates[displayName] || {
        componentName: displayName,
        inclusive: 0,
        exclusive: 0,
        render: 0,
        count: 0
      };
      if (measurement.render[id]) {
        candidates[displayName].render += measurement.render[id];
      }
      if (measurement.exclusive[id]) {
        candidates[displayName].exclusive += measurement.exclusive[id];
      }
      if (measurement.inclusive[id]) {
        candidates[displayName].inclusive += measurement.inclusive[id];
      }
      if (measurement.counts[id]) {
        candidates[displayName].count += measurement.counts[id];
      }
    }
  }

  // Now make a sorted array with the results.
  var arr = [];
  for (displayName in candidates) {
    if (candidates[displayName].exclusive >= DONT_CARE_THRESHOLD) {
      arr.push(candidates[displayName]);
    }
  }

  arr.sort(function(a, b) {
    return b.exclusive - a.exclusive;
  });

  return arr;
 }

 function getInclusiveSummary(measurements, onlyClean) {
  var candidates = {};
  var inclusiveKey;

  for (var i = 0; i < measurements.length; i++) {
    var measurement = measurements[i];
    var allIDs = assign(
      {},
      measurement.exclusive,
      measurement.inclusive
    );
    var cleanComponents;

    if (onlyClean) {
      cleanComponents = getUnchangedComponents(measurement);
    }

    for (var id in allIDs) {
      if (onlyClean && !cleanComponents[id]) {
        continue;
      }

      var displayName = measurement.displayNames[id];

      // Inclusive time is not useful for many components without knowing where
      // they are instantiated. So we aggregate inclusive time with both the
      // owner and current displayName as the key.
      inclusiveKey = displayName.owner + ' > ' + displayName.current;

      candidates[inclusiveKey] = candidates[inclusiveKey] || {
        componentName: inclusiveKey,
        time: 0,
        count: 0
      };

      if (measurement.inclusive[id]) {
        candidates[inclusiveKey].time += measurement.inclusive[id];
      }
      if (measurement.counts[id]) {
        candidates[inclusiveKey].count += measurement.counts[id];
      }
    }
  }

  // Now make a sorted array with the results.
  var arr = [];
  for (inclusiveKey in candidates) {
    if (candidates[inclusiveKey].time >= DONT_CARE_THRESHOLD) {
      arr.push(candidates[inclusiveKey]);
    }
  }

  arr.sort(function(a, b) {
    return b.time - a.time;
  });

  return arr;
 }

 function getUnchangedComponents(measurement) {
  // For a given reconcile, look at which components did not actually
  // render anything to the DOM and return a mapping of their ID to
  // the amount of time it took to render the entire subtree.
  var cleanComponents = {};
  var dirtyLeafIDs = Object.keys(measurement.writes);
  var allIDs = assign({}, measurement.exclusive, measurement.inclusive);

  for (var id in allIDs) {
    var isDirty = false;
    // For each component that rendered, see if a component that triggered
    // a DOM op is in its subtree.
    for (var i = 0; i < dirtyLeafIDs.length; i++) {
      if (dirtyLeafIDs[i].indexOf(id) === 0) {
        isDirty = true;
        break;
      }
    }
    if (!isDirty && measurement.counts[id] > 0) {
      cleanComponents[id] = true;
    }
  }
  return cleanComponents;
 }

 var ReactDefaultPerfAnalysis = {
  getExclusiveSummary: getExclusiveSummary,
  getInclusiveSummary: getInclusiveSummary,
  getDOMSummary: getDOMSummary,
  getTotalTime: getTotalTime
 };

 module.exports = ReactDefaultPerfAnalysis;

 },{"./Object.assign":27}],52:[function(_dereq_,module,exports){
 /**
 * Copyright 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactElement
 */

 "use strict";

 var ReactContext = _dereq_("./ReactContext");
 var ReactCurrentOwner = _dereq_("./ReactCurrentOwner");

 var warning = _dereq_("./warning");

 var RESERVED_PROPS = {
  key: true,
  ref: true
 };

 /**
 * Warn for mutations.
 *
 * @internal
 * @param {object} object
 * @param {string} key
 */
 function defineWarningProperty(object, key) {
  Object.defineProperty(object, key, {

    configurable: false,
    enumerable: true,

    get: function() {
      if (!this._store) {
        return null;
      }
      return this._store[key];
    },

    set: function(value) {
      ("production" !== "development" ? warning(
        false,
        'Don\'t set the ' + key + ' property of the component. ' +
        'Mutate the existing props object instead.'
      ) : null);
      this._store[key] = value;
    }

  });
 }

 /**
 * This is updated to true if the membrane is successfully created.
 */
 var useMutationMembrane = false;

 /**
 * Warn for mutations.
 *
 * @internal
 * @param {object} element
 */
 function defineMutationMembrane(prototype) {
  try {
    var pseudoFrozenProperties = {
      props: true
    };
    for (var key in pseudoFrozenProperties) {
      defineWarningProperty(prototype, key);
    }
    useMutationMembrane = true;
  } catch (x) {
    // IE will fail on defineProperty
  }
 }

 /**
 * Base constructor for all React elements. This is only used to make this
 * work with a dynamic instanceof check. Nothing should live on this prototype.
 *
 * @param {*} type
 * @param {string|object} ref
 * @param {*} key
 * @param {*} props
 * @internal
 */
 var ReactElement = function(type, key, ref, owner, context, props) {
  // Built-in properties that belong on the element
  this.type = type;
  this.key = key;
  this.ref = ref;

  // Record the component responsible for creating this element.
  this._owner = owner;

  // TODO: Deprecate withContext, and then the context becomes accessible
  // through the owner.
  this._context = context;

  if ("production" !== "development") {
    // The validation flag and props are currently mutative. We put them on
    // an external backing store so that we can freeze the whole object.
    // This can be replaced with a WeakMap once they are implemented in
    // commonly used development environments.
    this._store = { validated: false, props: props };

    // We're not allowed to set props directly on the object so we early
    // return and rely on the prototype membrane to forward to the backing
    // store.
    if (useMutationMembrane) {
      Object.freeze(this);
      return;
    }
  }

  this.props = props;
 };

 // We intentionally don't expose the function on the constructor property.
 // ReactElement should be indistinguishable from a plain object.
 ReactElement.prototype = {
  _isReactElement: true
 };

 if ("production" !== "development") {
  defineMutationMembrane(ReactElement.prototype);
 }

 ReactElement.createElement = function(type, config, children) {
  var propName;

  // Reserved names are extracted
  var props = {};

  var key = null;
  var ref = null;

  if (config != null) {
    ref = config.ref === undefined ? null : config.ref;
    if ("production" !== "development") {
      ("production" !== "development" ? warning(
        config.key !== null,
        'createElement(...): Encountered component with a `key` of null. In ' +
        'a future version, this will be treated as equivalent to the string ' +
        '\'null\'; instead, provide an explicit key or use undefined.'
      ) : null);
    }
    // TODO: Change this back to `config.key === undefined`
    key = config.key == null ? null : '' + config.key;
    // Remaining properties are added to a new props object
    for (propName in config) {
      if (config.hasOwnProperty(propName) &&
          !RESERVED_PROPS.hasOwnProperty(propName)) {
        props[propName] = config[propName];
      }
    }
  }

  // Children can be more than one argument, and those are transferred onto
  // the newly allocated props object.
  var childrenLength = arguments.length - 2;
  if (childrenLength === 1) {
    props.children = children;
  } else if (childrenLength > 1) {
    var childArray = Array(childrenLength);
    for (var i = 0; i < childr
diff --git a/todo-world_js_libs_underscore-min.js b/todo-world_js_libs_underscore-min.js
	<?xml version="1.0" encoding="UTF-8"?>
	<project version="4">
	<component name="Encoding" useUTFGuessing="true" native2AsciiForPropertiesFiles="false" />
	</project>
	<?xml version="1.0" encoding="UTF-8"?>
	<project version="4">
	<component name="ProjectRootManager" version="2" />
	</project>
	<?xml version="1.0" encoding="UTF-8"?>
	<project version="4">
	<component name="ProjectModuleManager">
	<modules>
	<module fileurl="file://$PROJECT_DIR$/.idea/todo-world.iml" filepath="$PROJECT_DIR$/.idea/todo-world.iml" />
	</modules>
	</component>
	</project>
	<component name="DependencyValidationManager">
	<state>
	<option name="SKIP_IMPORT_STATEMENTS" value="false" />
	</state>
	</component>
	<?xml version="1.0" encoding="UTF-8"?>
	<module type="WEB_MODULE" version="4">
	<component name="NewModuleRootManager">
	<content url="file://$MODULE_DIR$" />
	<orderEntry type="inheritedJdk" />
	<orderEntry type="sourceFolder" forTests="false" />
	</component>
	</module>
	<?xml version="1.0" encoding="UTF-8"?>
	<project version="4">
	<component name="VcsDirectoryMappings">
	<mapping directory="" vcs="" />
	</component>
	</project>
	<!-- template.html -->
	<html>
	<head>
	<title>Hello React</title>
	<script src="/js/libs/react-0.12.1.js"></script>
	<script src="/js/libs/JSXTransformer-0.12.1.js"></script>
	<script src="/js/libs/jquery-1.10.0.min.js"></script>
	<script src="/js/libs/underscore-min.js"></script>
	<script src="/js/libs/backbone-min.js"></script>
	</head>
	<body>
	<div id="content"></div>
	<script type="text/jsx">
	var TodoModel = Backbone.Model.extend({
	defaults: {
	title: '',
	isCompleted: false
	}
	});

	var TodoCollection = Backbone.Collection.extend({
	model: TodoModel
	});

	var todos = new TodoCollection();
	todos.add([
	{ title: 'do task a' },
	{ title: 'do task b' },
	{ title: 'do task c' },
	{ title: 'do task d' }
	]);

	var TodoBox = React.createClass({
	getInitialState: function() {
	return { data: this.props.data };
	},

	handleSubmit: function(title) {
	this.state.data.add({ title: title });
	this.setState({ data: this.state.data });
	},

	render: function() {
	return (
	<div className="todoBox">
	Welcome to Todo .next
	<TodoForm handleSubmit={this.handleSubmit}/>
	<TodoList data={this.state.data} />
	</div>
	)
	}
	})

	var TodoList = React.createClass({
	render: function() {
	var models = this.props.data.toJSON();
	var todoNodes = models.map(function(model) {
	return <Todo data={model} />
	});

	return (
	<ul>
	{todoNodes}
	</ul>
	);
	}
	});

	var Todo = React.createClass({
	render: function() {
	return (
	<li className="todo">
	{this.props.data.title}
	</li>
	);
	}
	});

	var TodoForm = React.createClass({
	handleSubmit: function(e) {
	e.preventDefault();
	var title = this.refs.title.getDOMNode().value.trim();
	if (!title) return;
	this.props.handleSubmit(title);
	this.refs.title.getDOMNode().value = '';
	return;
	},

	render: function() {
	return (
	<form className="todoForm" onSubmit={this.handleSubmit}>
	<input type="text" placeholder="insert todo text here..." ref="title" />
	<input type="submit" value="Submit" />
	</form>
	);
	}
	});

	React.render(
	<TodoBox data={todos} />,
	document.querySelector('#content')
	);
	</script>
	</body>
	</html>