metamaps/metamaps

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    eval("/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n/* global hasOwnProperty:true */\n\n'use strict';\n\nvar _prodInvariant = __webpack_require__(208),\n    _assign = __webpack_require__(176);\n\nvar AutoFocusUtils = __webpack_require__(266);\nvar CSSPropertyOperations = __webpack_require__(268);\nvar DOMLazyTree = __webpack_require__(254);\nvar DOMNamespaces = __webpack_require__(255);\nvar DOMProperty = __webpack_require__(209);\nvar DOMPropertyOperations = __webpack_require__(276);\nvar EventPluginHub = __webpack_require__(215);\nvar EventPluginRegistry = __webpack_require__(216);\nvar ReactBrowserEventEmitter = __webpack_require__(278);\nvar ReactDOMComponentFlags = __webpack_require__(210);\nvar ReactDOMComponentTree = __webpack_require__(207);\nvar ReactDOMInput = __webpack_require__(281);\nvar ReactDOMOption = __webpack_require__(284);\nvar ReactDOMSelect = __webpack_require__(285);\nvar ReactDOMTextarea = __webpack_require__(286);\nvar ReactInstrumentation = __webpack_require__(235);\nvar ReactMultiChild = __webpack_require__(287);\nvar ReactServerRenderingTransaction = __webpack_require__(306);\n\nvar emptyFunction = __webpack_require__(184);\nvar escapeTextContentForBrowser = __webpack_require__(259);\nvar invariant = __webpack_require__(180);\nvar isEventSupported = __webpack_require__(243);\nvar shallowEqual = __webpack_require__(296);\nvar validateDOMNesting = __webpack_require__(309);\nvar warning = __webpack_require__(183);\n\nvar Flags = ReactDOMComponentFlags;\nvar deleteListener = EventPluginHub.deleteListener;\nvar getNode = ReactDOMComponentTree.getNodeFromInstance;\nvar listenTo = ReactBrowserEventEmitter.listenTo;\nvar registrationNameModules = EventPluginRegistry.registrationNameModules;\n\n// For quickly matching children type, to test if can be treated as content.\nvar CONTENT_TYPES = { 'string': true, 'number': true };\n\nvar STYLE = 'style';\nvar HTML = '__html';\nvar RESERVED_PROPS = {\n  children: null,\n  dangerouslySetInnerHTML: null,\n  suppressContentEditableWarning: null\n};\n\n// Node type for document fragments (Node.DOCUMENT_FRAGMENT_NODE).\nvar DOC_FRAGMENT_TYPE = 11;\n\nfunction getDeclarationErrorAddendum(internalInstance) {\n  if (internalInstance) {\n    var owner = internalInstance._currentElement._owner || null;\n    if (owner) {\n      var name = owner.getName();\n      if (name) {\n        return ' This DOM node was rendered by `' + name + '`.';\n      }\n    }\n  }\n  return '';\n}\n\nfunction friendlyStringify(obj) {\n  if (typeof obj === 'object') {\n    if (Array.isArray(obj)) {\n      return '[' + obj.map(friendlyStringify).join(', ') + ']';\n    } else {\n      var pairs = [];\n      for (var key in obj) {\n        if (Object.prototype.hasOwnProperty.call(obj, key)) {\n          var keyEscaped = /^[a-z$_][\\w$_]*$/i.test(key) ? key : JSON.stringify(key);\n          pairs.push(keyEscaped + ': ' + friendlyStringify(obj[key]));\n        }\n      }\n      return '{' + pairs.join(', ') + '}';\n    }\n  } else if (typeof obj === 'string') {\n    return JSON.stringify(obj);\n  } else if (typeof obj === 'function') {\n    return '[function object]';\n  }\n  // Differs from JSON.stringify in that undefined because undefined and that\n  // inf and nan don't become null\n  return String(obj);\n}\n\nvar styleMutationWarning = {};\n\nfunction checkAndWarnForMutatedStyle(style1, style2, component) {\n  if (style1 == null || style2 == null) {\n    return;\n  }\n  if (shallowEqual(style1, style2)) {\n    return;\n  }\n\n  var componentName = component._tag;\n  var owner = component._currentElement._owner;\n  var ownerName;\n  if (owner) {\n    ownerName = owner.getName();\n  }\n\n  var hash = ownerName + '|' + componentName;\n\n  if (styleMutationWarning.hasOwnProperty(hash)) {\n    return;\n  }\n\n  styleMutationWarning[hash] = true;\n\n   true ? warning(false, '`%s` was passed a style object that has previously been mutated. ' + 'Mutating `style` is deprecated. Consider cloning it beforehand. Check ' + 'the `render` %s. Previous style: %s. Mutated style: %s.', componentName, owner ? 'of `' + ownerName + '`' : 'using <' + componentName + '>', friendlyStringify(style1), friendlyStringify(style2)) : void 0;\n}\n\n/**\n * @param {object} component\n * @param {?object} props\n */\nfunction assertValidProps(component, props) {\n  if (!props) {\n    return;\n  }\n  // Note the use of `==` which checks for null or undefined.\n  if (voidElementTags[component._tag]) {\n    !(props.children == null && props.dangerouslySetInnerHTML == null) ?  true ? invariant(false, '%s is a void element tag and must neither have `children` nor use `dangerouslySetInnerHTML`.%s', component._tag, component._currentElement._owner ? ' Check the render method of ' + component._currentElement._owner.getName() + '.' : '') : _prodInvariant('137', component._tag, component._currentElement._owner ? ' Check the render method of ' + component._currentElement._owner.getName() + '.' : '') : void 0;\n  }\n  if (props.dangerouslySetInnerHTML != null) {\n    !(props.children == null) ?  true ? invariant(false, 'Can only set one of `children` or `props.dangerouslySetInnerHTML`.') : _prodInvariant('60') : void 0;\n    !(typeof props.dangerouslySetInnerHTML === 'object' && HTML in props.dangerouslySetInnerHTML) ?  true ? invariant(false, '`props.dangerouslySetInnerHTML` must be in the form `{__html: ...}`. Please visit https://fb.me/react-invariant-dangerously-set-inner-html for more information.') : _prodInvariant('61') : void 0;\n  }\n  if (true) {\n     true ? warning(props.innerHTML == null, 'Directly setting property `innerHTML` is not permitted. ' + 'For more information, lookup documentation on `dangerouslySetInnerHTML`.') : void 0;\n     true ? warning(props.suppressContentEditableWarning || !props.contentEditable || props.children == null, '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.') : void 0;\n     true ? warning(props.onFocusIn == null && props.onFocusOut == null, 'React uses onFocus and onBlur instead of onFocusIn and onFocusOut. ' + 'All React events are normalized to bubble, so onFocusIn and onFocusOut ' + 'are not needed/supported by React.') : void 0;\n  }\n  !(props.style == null || typeof props.style === 'object') ?  true ? invariant(false, 'The `style` prop expects a mapping from style properties to values, not a string. For example, style={{marginRight: spacing + \\'em\\'}} when using JSX.%s', getDeclarationErrorAddendum(component)) : _prodInvariant('62', getDeclarationErrorAddendum(component)) : void 0;\n}\n\nfunction enqueuePutListener(inst, registrationName, listener, transaction) {\n  if (transaction instanceof ReactServerRenderingTransaction) {\n    return;\n  }\n  if (true) {\n    // IE8 has no API for event capturing and the `onScroll` event doesn't\n    // bubble.\n     true ? warning(registrationName !== 'onScroll' || isEventSupported('scroll', true), 'This browser doesn\\'t support the `onScroll` event') : void 0;\n  }\n  var containerInfo = inst._hostContainerInfo;\n  var isDocumentFragment = containerInfo._node && containerInfo._node.nodeType === DOC_FRAGMENT_TYPE;\n  var doc = isDocumentFragment ? containerInfo._node : containerInfo._ownerDocument;\n  listenTo(registrationName, doc);\n  transaction.getReactMountReady().enqueue(putListener, {\n    inst: inst,\n    registrationName: registrationName,\n    listener: listener\n  });\n}\n\nfunction putListener() {\n  var listenerToPut = this;\n  EventPluginHub.putListener(listenerToPut.inst, listenerToPut.registrationName, listenerToPut.listener);\n}\n\nfunction inputPostMount() {\n  var inst = this;\n  ReactDOMInput.postMountWrapper(inst);\n}\n\nfunction textareaPostMount() {\n  var inst = this;\n  ReactDOMTextarea.postMountWrapper(inst);\n}\n\nfunction optionPostMount() {\n  var inst = this;\n  ReactDOMOption.postMountWrapper(inst);\n}\n\nvar setAndValidateContentChildDev = emptyFunction;\nif (true) {\n  setAndValidateContentChildDev = function (content) {\n    var hasExistingContent = this._contentDebugID != null;\n    var debugID = this._debugID;\n    // This ID represents the inlined child that has no backing instance:\n    var contentDebugID = -debugID;\n\n    if (content == null) {\n      if (hasExistingContent) {\n        ReactInstrumentation.debugTool.onUnmountComponent(this._contentDebugID);\n      }\n      this._contentDebugID = null;\n      return;\n    }\n\n    validateDOMNesting(null, String(content), this, this._ancestorInfo);\n    this._contentDebugID = contentDebugID;\n    if (hasExistingContent) {\n      ReactInstrumentation.debugTool.onBeforeUpdateComponent(contentDebugID, content);\n      ReactInstrumentation.debugTool.onUpdateComponent(contentDebugID);\n    } else {\n      ReactInstrumentation.debugTool.onBeforeMountComponent(contentDebugID, content, debugID);\n      ReactInstrumentation.debugTool.onMountComponent(contentDebugID);\n      ReactInstrumentation.debugTool.onSetChildren(debugID, [contentDebugID]);\n    }\n  };\n}\n\n// There are so many media events, it makes sense to just\n// maintain a list rather than create a `trapBubbledEvent` for each\nvar mediaEvents = {\n  topAbort: 'abort',\n  topCanPlay: 'canplay',\n  topCanPlayThrough: 'canplaythrough',\n  topDurationChange: 'durationchange',\n  topEmptied: 'emptied',\n  topEncrypted: 'encrypted',\n  topEnded: 'ended',\n  topError: 'error',\n  topLoadedData: 'loadeddata',\n  topLoadedMetadata: 'loadedmetadata',\n  topLoadStart: 'loadstart',\n  topPause: 'pause',\n  topPlay: 'play',\n  topPlaying: 'playing',\n  topProgress: 'progress',\n  topRateChange: 'ratechange',\n  topSeeked: 'seeked',\n  topSeeking: 'seeking',\n  topStalled: 'stalled',\n  topSuspend: 'suspend',\n  topTimeUpdate: 'timeupdate',\n  topVolumeChange: 'volumechange',\n  topWaiting: 'waiting'\n};\n\nfunction trapBubbledEventsLocal() {\n  var inst = this;\n  // If a component renders to null or if another component fatals and causes\n  // the state of the tree to be corrupted, `node` here can be null.\n  !inst._rootNodeID ?  true ? invariant(false, 'Must be mounted to trap events') : _prodInvariant('63') : void 0;\n  var node = getNode(inst);\n  !node ?  true ? invariant(false, 'trapBubbledEvent(...): Requires node to be rendered.') : _prodInvariant('64') : void 0;\n\n  switch (inst._tag) {\n    case 'iframe':\n    case 'object':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topLoad', 'load', node)];\n      break;\n    case 'video':\n    case 'audio':\n\n      inst._wrapperState.listeners = [];\n      // Create listener for each media event\n      for (var event in mediaEvents) {\n        if (mediaEvents.hasOwnProperty(event)) {\n          inst._wrapperState.listeners.push(ReactBrowserEventEmitter.trapBubbledEvent(event, mediaEvents[event], node));\n        }\n      }\n      break;\n    case 'source':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topError', 'error', node)];\n      break;\n    case 'img':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topError', 'error', node), ReactBrowserEventEmitter.trapBubbledEvent('topLoad', 'load', node)];\n      break;\n    case 'form':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topReset', 'reset', node), ReactBrowserEventEmitter.trapBubbledEvent('topSubmit', 'submit', node)];\n      break;\n    case 'input':\n    case 'select':\n    case 'textarea':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topInvalid', 'invalid', node)];\n      break;\n  }\n}\n\nfunction postUpdateSelectWrapper() {\n  ReactDOMSelect.postUpdateWrapper(this);\n}\n\n// For HTML, certain tags should omit their close tag. We keep a whitelist for\n// those special-case tags.\n\nvar omittedCloseTags = {\n  'area': true,\n  'base': true,\n  'br': true,\n  'col': true,\n  'embed': true,\n  'hr': true,\n  'img': true,\n  'input': true,\n  'keygen': true,\n  'link': true,\n  'meta': true,\n  'param': true,\n  'source': true,\n  'track': true,\n  'wbr': true\n};\n\nvar newlineEatingTags = {\n  'listing': true,\n  'pre': true,\n  'textarea': true\n};\n\n// For HTML, certain tags cannot have children. This has the same purpose as\n// `omittedCloseTags` except that `menuitem` should still have its closing tag.\n\nvar voidElementTags = _assign({\n  'menuitem': true\n}, omittedCloseTags);\n\n// We accept any tag to be rendered but since this gets injected into arbitrary\n// HTML, we want to make sure that it's a safe tag.\n// http://www.w3.org/TR/REC-xml/#NT-Name\n\nvar VALID_TAG_REGEX = /^[a-zA-Z][a-zA-Z:_\\.\\-\\d]*$/; // Simplified subset\nvar validatedTagCache = {};\nvar hasOwnProperty = {}.hasOwnProperty;\n\nfunction validateDangerousTag(tag) {\n  if (!hasOwnProperty.call(validatedTagCache, tag)) {\n    !VALID_TAG_REGEX.test(tag) ?  true ? invariant(false, 'Invalid tag: %s', tag) : _prodInvariant('65', tag) : void 0;\n    validatedTagCache[tag] = true;\n  }\n}\n\nfunction isCustomComponent(tagName, props) {\n  return tagName.indexOf('-') >= 0 || props.is != null;\n}\n\nvar globalIdCounter = 1;\n\n/**\n * Creates a new React class that is idempotent and capable of containing other\n * React components. It accepts event listeners and DOM properties that are\n * valid according to `DOMProperty`.\n *\n *  - Event listeners: `onClick`, `onMouseDown`, etc.\n *  - DOM properties: `className`, `name`, `title`, etc.\n *\n * The `style` property functions differently from the DOM API. It accepts an\n * object mapping of style properties to values.\n *\n * @constructor ReactDOMComponent\n * @extends ReactMultiChild\n */\nfunction ReactDOMComponent(element) {\n  var tag = element.type;\n  validateDangerousTag(tag);\n  this._currentElement = element;\n  this._tag = tag.toLowerCase();\n  this._namespaceURI = null;\n  this._renderedChildren = null;\n  this._previousStyle = null;\n  this._previousStyleCopy = null;\n  this._hostNode = null;\n  this._hostParent = null;\n  this._rootNodeID = 0;\n  this._domID = 0;\n  this._hostContainerInfo = null;\n  this._wrapperState = null;\n  this._topLevelWrapper = null;\n  this._flags = 0;\n  if (true) {\n    this._ancestorInfo = null;\n    setAndValidateContentChildDev.call(this, null);\n  }\n}\n\nReactDOMComponent.displayName = 'ReactDOMComponent';\n\nReactDOMComponent.Mixin = {\n\n  /**\n   * Generates root tag markup then recurses. This method has side effects and\n   * is not idempotent.\n   *\n   * @internal\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {?ReactDOMComponent} the parent component instance\n   * @param {?object} info about the host container\n   * @param {object} context\n   * @return {string} The computed markup.\n   */\n  mountComponent: function (transaction, hostParent, hostContainerInfo, context) {\n    this._rootNodeID = globalIdCounter++;\n    this._domID = hostContainerInfo._idCounter++;\n    this._hostParent = hostParent;\n    this._hostContainerInfo = hostContainerInfo;\n\n    var props = this._currentElement.props;\n\n    switch (this._tag) {\n      case 'audio':\n      case 'form':\n      case 'iframe':\n      case 'img':\n      case 'link':\n      case 'object':\n      case 'source':\n      case 'video':\n        this._wrapperState = {\n          listeners: null\n        };\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n      case 'input':\n        ReactDOMInput.mountWrapper(this, props, hostParent);\n        props = ReactDOMInput.getHostProps(this, props);\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n      case 'option':\n        ReactDOMOption.mountWrapper(this, props, hostParent);\n        props = ReactDOMOption.getHostProps(this, props);\n        break;\n      case 'select':\n        ReactDOMSelect.mountWrapper(this, props, hostParent);\n        props = ReactDOMSelect.getHostProps(this, props);\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n      case 'textarea':\n        ReactDOMTextarea.mountWrapper(this, props, hostParent);\n        props = ReactDOMTextarea.getHostProps(this, props);\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n    }\n\n    assertValidProps(this, props);\n\n    // We create tags in the namespace of their parent container, except HTML\n    // tags get no namespace.\n    var namespaceURI;\n    var parentTag;\n    if (hostParent != null) {\n      namespaceURI = hostParent._namespaceURI;\n      parentTag = hostParent._tag;\n    } else if (hostContainerInfo._tag) {\n      namespaceURI = hostContainerInfo._namespaceURI;\n      parentTag = hostContainerInfo._tag;\n    }\n    if (namespaceURI == null || namespaceURI === DOMNamespaces.svg && parentTag === 'foreignobject') {\n      namespaceURI = DOMNamespaces.html;\n    }\n    if (namespaceURI === DOMNamespaces.html) {\n      if (this._tag === 'svg') {\n        namespaceURI = DOMNamespaces.svg;\n      } else if (this._tag === 'math') {\n        namespaceURI = DOMNamespaces.mathml;\n      }\n    }\n    this._namespaceURI = namespaceURI;\n\n    if (true) {\n      var parentInfo;\n      if (hostParent != null) {\n        parentInfo = hostParent._ancestorInfo;\n      } else if (hostContainerInfo._tag) {\n        parentInfo = hostContainerInfo._ancestorInfo;\n      }\n      if (parentInfo) {\n        // parentInfo should always be present except for the top-level\n        // component when server rendering\n        validateDOMNesting(this._tag, null, this, parentInfo);\n      }\n      this._ancestorInfo = validateDOMNesting.updatedAncestorInfo(parentInfo, this._tag, this);\n    }\n\n    var mountImage;\n    if (transaction.useCreateElement) {\n      var ownerDocument = hostContainerInfo._ownerDocument;\n      var el;\n      if (namespaceURI === DOMNamespaces.html) {\n        if (this._tag === 'script') {\n          // Create the script via .innerHTML so its \"parser-inserted\" flag is\n          // set to true and it does not execute\n          var div = ownerDocument.createElement('div');\n          var type = this._currentElement.type;\n          div.innerHTML = '<' + type + '></' + type + '>';\n          el = div.removeChild(div.firstChild);\n        } else if (props.is) {\n          el = ownerDocument.createElement(this._currentElement.type, props.is);\n        } else {\n          // Separate else branch instead of using `props.is || undefined` above becuase of a Firefox bug.\n          // See discussion in https://github.com/facebook/react/pull/6896\n          // and discussion in https://bugzilla.mozilla.org/show_bug.cgi?id=1276240\n          el = ownerDocument.createElement(this._currentElement.type);\n        }\n      } else {\n        el = ownerDocument.createElementNS(namespaceURI, this._currentElement.type);\n      }\n      ReactDOMComponentTree.precacheNode(this, el);\n      this._flags |= Flags.hasCachedChildNodes;\n      if (!this._hostParent) {\n        DOMPropertyOperations.setAttributeForRoot(el);\n      }\n      this._updateDOMProperties(null, props, transaction);\n      var lazyTree = DOMLazyTree(el);\n      this._createInitialChildren(transaction, props, context, lazyTree);\n      mountImage = lazyTree;\n    } else {\n      var tagOpen = this._createOpenTagMarkupAndPutListeners(transaction, props);\n      var tagContent = this._createContentMarkup(transaction, props, context);\n      if (!tagContent && omittedCloseTags[this._tag]) {\n        mountImage = tagOpen + '/>';\n      } else {\n        mountImage = tagOpen + '>' + tagContent + '</' + this._currentElement.type + '>';\n      }\n    }\n\n    switch (this._tag) {\n      case 'input':\n        transaction.getReactMountReady().enqueue(inputPostMount, this);\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'textarea':\n        transaction.getReactMountReady().enqueue(textareaPostMount, this);\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'select':\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'button':\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'option':\n        transaction.getReactMountReady().enqueue(optionPostMount, this);\n        break;\n    }\n\n    return mountImage;\n  },\n\n  /**\n   * Creates markup for the open tag and all attributes.\n   *\n   * This method has side effects because events get registered.\n   *\n   * Iterating over object properties is faster than iterating over arrays.\n   * @see http://jsperf.com/obj-vs-arr-iteration\n   *\n   * @private\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {object} props\n   * @return {string} Markup of opening tag.\n   */\n  _createOpenTagMarkupAndPutListeners: function (transaction, props) {\n    var ret = '<' + this._currentElement.type;\n\n    for (var propKey in props) {\n      if (!props.hasOwnProperty(propKey)) {\n        continue;\n      }\n      var propValue = props[propKey];\n      if (propValue == null) {\n        continue;\n      }\n      if (registrationNameModules.hasOwnProperty(propKey)) {\n        if (propValue) {\n          enqueuePutListener(this, propKey, propValue, transaction);\n        }\n      } else {\n        if (propKey === STYLE) {\n          if (propValue) {\n            if (true) {\n              // See `_updateDOMProperties`. style block\n              this._previousStyle = propValue;\n            }\n            propValue = this._previousStyleCopy = _assign({}, props.style);\n          }\n          propValue = CSSPropertyOperations.createMarkupForStyles(propValue, this);\n        }\n        var markup = null;\n        if (this._tag != null && isCustomComponent(this._tag, props)) {\n          if (!RESERVED_PROPS.hasOwnProperty(propKey)) {\n            markup = DOMPropertyOperations.createMarkupForCustomAttribute(propKey, propValue);\n          }\n        } else {\n          markup = DOMPropertyOperations.createMarkupForProperty(propKey, propValue);\n        }\n        if (markup) {\n          ret += ' ' + markup;\n        }\n      }\n    }\n\n    // For static pages, no need to put React ID and checksum. Saves lots of\n    // bytes.\n    if (transaction.renderToStaticMarkup) {\n      return ret;\n    }\n\n    if (!this._hostParent) {\n      ret += ' ' + DOMPropertyOperations.createMarkupForRoot();\n    }\n    ret += ' ' + DOMPropertyOperations.createMarkupForID(this._domID);\n    return ret;\n  },\n\n  /**\n   * Creates markup for the content between the tags.\n   *\n   * @private\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {object} props\n   * @param {object} context\n   * @return {string} Content markup.\n   */\n  _createContentMarkup: function (transaction, props, context) {\n    var ret = '';\n\n    // Intentional use of != to avoid catching zero/false.\n    var innerHTML = props.dangerouslySetInnerHTML;\n    if (innerHTML != null) {\n      if (innerHTML.__html != null) {\n        ret = innerHTML.__html;\n      }\n    } else {\n      var contentToUse = CONTENT_TYPES[typeof props.children] ? props.children : null;\n      var childrenToUse = contentToUse != null ? null : props.children;\n      if (contentToUse != null) {\n        // TODO: Validate that text is allowed as a child of this node\n        ret = escapeTextContentForBrowser(contentToUse);\n        if (true) {\n          setAndValidateContentChildDev.call(this, contentToUse);\n        }\n      } else if (childrenToUse != null) {\n        var mountImages = this.mountChildren(childrenToUse, transaction, context);\n        ret = mountImages.join('');\n      }\n    }\n    if (newlineEatingTags[this._tag] && ret.charAt(0) === '\\n') {\n      // text/html ignores the first character in these tags if it's a newline\n      // Prefer to break application/xml over text/html (for now) by adding\n      // a newline specifically to get eaten by the parser. (Alternately for\n      // textareas, replacing \"^\\n\" with \"\\r\\n\" doesn't get eaten, and the first\n      // \\r is normalized out by HTMLTextAreaElement#value.)\n      // See: <http://www.w3.org/TR/html-polyglot/#newlines-in-textarea-and-pre>\n      // See: <http://www.w3.org/TR/html5/syntax.html#element-restrictions>\n      // See: <http://www.w3.org/TR/html5/syntax.html#newlines>\n      // See: Parsing of \"textarea\" \"listing\" and \"pre\" elements\n      //  from <http://www.w3.org/TR/html5/syntax.html#parsing-main-inbody>\n      return '\\n' + ret;\n    } else {\n      return ret;\n    }\n  },\n\n  _createInitialChildren: function (transaction, props, context, lazyTree) {\n    // Intentional use of != to avoid catching zero/false.\n    var innerHTML = props.dangerouslySetInnerHTML;\n    if (innerHTML != null) {\n      if (innerHTML.__html != null) {\n        DOMLazyTree.queueHTML(lazyTree, innerHTML.__html);\n      }\n    } else {\n      var contentToUse = CONTENT_TYPES[typeof props.children] ? props.children : null;\n      var childrenToUse = contentToUse != null ? null : props.children;\n      // TODO: Validate that text is allowed as a child of this node\n      if (contentToUse != null) {\n        // Avoid setting textContent when the text is empty. In IE11 setting\n        // textContent on a text area will cause the placeholder to not\n        // show within the textarea until it has been focused and blurred again.\n        // https://github.com/facebook/react/issues/6731#issuecomment-254874553\n        if (contentToUse !== '') {\n          if (true) {\n            setAndValidateContentChildDev.call(this, contentToUse);\n          }\n          DOMLazyTree.queueText(lazyTree, contentToUse);\n        }\n      } else if (childrenToUse != null) {\n        var mountImages = this.mountChildren(childrenToUse, transaction, context);\n        for (var i = 0; i < mountImages.length; i++) {\n          DOMLazyTree.queueChild(lazyTree, mountImages[i]);\n        }\n      }\n    }\n  },\n\n  /**\n   * Receives a next element and updates the component.\n   *\n   * @internal\n   * @param {ReactElement} nextElement\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {object} context\n   */\n  receiveComponent: function (nextElement, transaction, context) {\n    var prevElement = this._currentElement;\n    this._currentElement = nextElement;\n    this.updateComponent(transaction, prevElement, nextElement, context);\n  },\n\n  /**\n   * Updates a DOM component after it has already been allocated and\n   * attached to the DOM. Reconciles the root DOM node, then recurses.\n   *\n   * @param {ReactReconcileTransaction} transaction\n   * @param {ReactElement} prevElement\n   * @param {ReactElement} nextElement\n   * @internal\n   * @overridable\n   */\n  updateComponent: function (transaction, prevElement, nextElement, context) {\n    var lastProps = prevElement.props;\n    var nextProps = this._currentElement.props;\n\n    switch (this._tag) {\n      case 'input':\n        lastProps = ReactDOMInput.getHostProps(this, lastProps);\n        nextProps = ReactDOMInput.getHostProps(this, nextProps);\n        break;\n      case 'option':\n        lastProps = ReactDOMOption.getHostProps(this, lastProps);\n        nextProps = ReactDOMOption.getHostProps(this, nextProps);\n        break;\n      case 'select':\n        lastProps = ReactDOMSelect.getHostProps(this, lastProps);\n        nextProps = ReactDOMSelect.getHostProps(this, nextProps);\n        break;\n      case 'textarea':\n        lastProps = ReactDOMTextarea.getHostProps(this, lastProps);\n        nextProps = ReactDOMTextarea.getHostProps(this, nextProps);\n        break;\n    }\n\n    assertValidProps(this, nextProps);\n    this._updateDOMProperties(lastProps, nextProps, transaction);\n    this._updateDOMChildren(lastProps, nextProps, transaction, context);\n\n    switch (this._tag) {\n      case 'input':\n        // Update the wrapper around inputs *after* updating props. This has to\n        // happen after `_updateDOMProperties`. Otherwise HTML5 input validations\n        // raise warnings and prevent the new value from being assigned.\n        ReactDOMInput.updateWrapper(this);\n        break;\n      case 'textarea':\n        ReactDOMTextarea.updateWrapper(this);\n        break;\n      case 'select':\n        // <select> value update needs to occur after <option> children\n        // reconciliation\n        transaction.getReactMountReady().enqueue(postUpdateSelectWrapper, this);\n        break;\n    }\n  },\n\n  /**\n   * Reconciles the properties by detecting differences in property values and\n   * updating the DOM as necessary. This function is probably the single most\n   * critical path for performance optimization.\n   *\n   * TODO: Benchmark whether checking for changed values in memory actually\n   *       improves performance (especially statically positioned elements).\n   * TODO: Benchmark the effects of putting this at the top since 99% of props\n   *       do not change for a given reconciliation.\n   * TODO: Benchmark areas that can be improved with caching.\n   *\n   * @private\n   * @param {object} lastProps\n   * @param {object} nextProps\n   * @param {?DOMElement} node\n   */\n  _updateDOMProperties: function (lastProps, nextProps, transaction) {\n    var propKey;\n    var styleName;\n    var styleUpdates;\n    for (propKey in lastProps) {\n      if (nextProps.hasOwnProperty(propKey) || !lastProps.hasOwnProperty(propKey) || lastProps[propKey] == null) {\n        continue;\n      }\n      if (propKey === STYLE) {\n        var lastStyle = this._previousStyleCopy;\n        for (styleName in lastStyle) {\n          if (lastStyle.hasOwnProperty(styleName)) {\n            styleUpdates = styleUpdates || {};\n            styleUpdates[styleName] = '';\n          }\n        }\n        this._previousStyleCopy = null;\n      } else if (registrationNameModules.hasOwnProperty(propKey)) {\n        if (lastProps[propKey]) {\n          // Only call deleteListener if there was a listener previously or\n          // else willDeleteListener gets called when there wasn't actually a\n          // listener (e.g., onClick={null})\n          deleteListener(this, propKey);\n        }\n      } else if (isCustomComponent(this._tag, lastProps)) {\n        if (!RESERVED_PROPS.hasOwnProperty(propKey)) {\n          DOMPropertyOperations.deleteValueForAttribute(getNode(this), propKey);\n        }\n      } else if (DOMProperty.properties[propKey] || DOMProperty.isCustomAttribute(propKey)) {\n        DOMPropertyOperations.deleteValueForProperty(getNode(this), propKey);\n      }\n    }\n    for (propKey in nextProps) {\n      var nextProp = nextProps[propKey];\n      var lastProp = propKey === STYLE ? this._previousStyleCopy : lastProps != null ? lastProps[propKey] : undefined;\n      if (!nextProps.hasOwnProperty(propKey) || nextProp === lastProp || nextProp == null && lastProp == null) {\n        continue;\n      }\n      if (propKey === STYLE) {\n        if (nextProp) {\n          if (true) {\n            checkAndWarnForMutatedStyle(this._previousStyleCopy, this._previousStyle, this);\n            this._previousStyle = nextProp;\n          }\n          nextProp = this._previousStyleCopy = _assign({}, nextProp);\n        } else {\n          this._previousStyleCopy = null;\n        }\n        if (lastProp) {\n          // Unset styles on `lastProp` but not on `nextProp`.\n          for (styleName in lastProp) {\n            if (lastProp.hasOwnProperty(styleName) && (!nextProp || !nextProp.hasOwnProperty(styleName))) {\n              styleUpdates = styleUpdates || {};\n              styleUpdates[styleName] = '';\n            }\n          }\n          // Update styles that changed since `lastProp`.\n          for (styleName in nextProp) {\n            if (nextProp.hasOwnProperty(styleName) && lastProp[styleName] !== nextProp[styleName]) {\n              styleUpdates = styleUpdates || {};\n              styleUpdates[styleName] = nextProp[styleName];\n            }\n          }\n        } else {\n          // Relies on `updateStylesByID` not mutating `styleUpdates`.\n          styleUpdates = nextProp;\n        }\n      } else if (registrationNameModules.hasOwnProperty(propKey)) {\n        if (nextProp) {\n          enqueuePutListener(this, propKey, nextProp, transaction);\n        } else if (lastProp) {\n          deleteListener(this, propKey);\n        }\n      } else if (isCustomComponent(this._tag, nextProps)) {\n        if (!RESERVED_PROPS.hasOwnProperty(propKey)) {\n          DOMPropertyOperations.setValueForAttribute(getNode(this), propKey, nextProp);\n        }\n      } else if (DOMProperty.properties[propKey] || DOMProperty.isCustomAttribute(propKey)) {\n        var node = getNode(this);\n        // If we're updating to null or undefined, we should remove the property\n        // from the DOM node instead of inadvertently setting to a string. This\n        // brings us in line with the same behavior we have on initial render.\n        if (nextProp != null) {\n          DOMPropertyOperations.setValueForProperty(node, propKey, nextProp);\n        } else {\n          DOMPropertyOperations.deleteValueForProperty(node, propKey);\n        }\n      }\n    }\n    if (styleUpdates) {\n      CSSPropertyOperations.setValueForStyles(getNode(this), styleUpdates, this);\n    }\n  },\n\n  /**\n   * Reconciles the children with the various properties that affect the\n   * children content.\n   *\n   * @param {object} lastProps\n   * @param {object} nextProps\n   * @param {ReactReconcileTransaction} transaction\n   * @param {object} context\n   */\n  _updateDOMChildren: function (lastProps, nextProps, transaction, context) {\n    var lastContent = CONTENT_TYPES[typeof lastProps.children] ? lastProps.children : null;\n    var nextContent = CONTENT_TYPES[typeof nextProps.children] ? nextProps.children : null;\n\n    var lastHtml = lastProps.dangerouslySetInnerHTML && lastProps.dangerouslySetInnerHTML.__html;\n    var nextHtml = nextProps.dangerouslySetInnerHTML && nextProps.dangerouslySetInnerHTML.__html;\n\n    // Note the use of `!=` which checks for null or undefined.\n    var lastChildren = lastContent != null ? null : lastProps.children;\n    var nextChildren = nextContent != null ? null : nextProps.children;\n\n    // If we're switching from children to content/html or vice versa, remove\n    // the old content\n    var lastHasContentOrHtml = lastContent != null || lastHtml != null;\n    var nextHasContentOrHtml = nextContent != null || nextHtml != null;\n    if (lastChildren != null && nextChildren == null) {\n      this.updateChildren(null, transaction, context);\n    } else if (lastHasContentOrHtml && !nextHasContentOrHtml) {\n      this.updateTextContent('');\n      if (true) {\n        ReactInstrumentation.debugTool.onSetChildren(this._debugID, []);\n      }\n    }\n\n    if (nextContent != null) {\n      if (lastContent !== nextContent) {\n        this.updateTextContent('' + nextContent);\n        if (true) {\n          setAndValidateContentChildDev.call(this, nextContent);\n        }\n      }\n    } else if (nextHtml != null) {\n      if (lastHtml !== nextHtml) {\n        this.updateMarkup('' + nextHtml);\n      }\n      if (true) {\n        ReactInstrumentation.debugTool.onSetChildren(this._debugID, []);\n      }\n    } else if (nextChildren != null) {\n      if (true) {\n        setAndValidateContentChildDev.call(this, null);\n      }\n\n      this.updateChildren(nextChildren, transaction, context);\n    }\n  },\n\n  getHostNode: function () {\n    return getNode(this);\n  },\n\n  /**\n   * Destroys all event registrations for this instance. Does not remove from\n   * the DOM. That must be done by the parent.\n   *\n   * @internal\n   */\n  unmountComponent: function (safely) {\n    switch (this._tag) {\n      case 'audio':\n      case 'form':\n      case 'iframe':\n      case 'img':\n      case 'link':\n      case 'object':\n      case 'source':\n      case 'video':\n        var listeners = this._wrapperState.listeners;\n        if (listeners) {\n          for (var i = 0; i < listeners.length; i++) {\n            listeners[i].remove();\n          }\n        }\n        break;\n      case 'html':\n      case 'head':\n      case 'body':\n        /**\n         * Components like <html> <head> and <body> can't be removed or added\n         * easily in a cross-browser way, however it's valuable to be able to\n         * take advantage of React's reconciliation for styling and <title>\n         * management. So we just document it and throw in dangerous cases.\n         */\n         true ?  true ? invariant(false, '<%s> tried to unmount. Because of cross-browser quirks it is impossible to unmount some top-level components (eg <html>, <head>, and <body>) reliably and efficiently. To fix this, have a single top-level component that never unmounts render these elements.', this._tag) : _prodInvariant('66', this._tag) : void 0;\n        break;\n    }\n\n    this.unmountChildren(safely);\n    ReactDOMComponentTree.uncacheNode(this);\n    EventPluginHub.deleteAllListeners(this);\n    this._rootNodeID = 0;\n    this._domID = 0;\n    this._wrapperState = null;\n\n    if (true) {\n      setAndValidateContentChildDev.call(this, null);\n    }\n  },\n\n  getPublicInstance: function () {\n    return getNode(this);\n  }\n\n};\n\n_assign(ReactDOMComponent.prototype, ReactDOMComponent.Mixin, ReactMultiChild.Mixin);\n\nmodule.exports = ReactDOMComponent;//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"265.js","sources":["/home/ubuntu/workspace/node_modules/react-dom/lib/ReactDOMComponent.js"],"sourcesContent":["/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n/* global hasOwnProperty:true */\n\n'use strict';\n\nvar _prodInvariant = require('./reactProdInvariant'),\n    _assign = require('object-assign');\n\nvar AutoFocusUtils = require('./AutoFocusUtils');\nvar CSSPropertyOperations = require('./CSSPropertyOperations');\nvar DOMLazyTree = require('./DOMLazyTree');\nvar DOMNamespaces = require('./DOMNamespaces');\nvar DOMProperty = require('./DOMProperty');\nvar DOMPropertyOperations = require('./DOMPropertyOperations');\nvar EventPluginHub = require('./EventPluginHub');\nvar EventPluginRegistry = require('./EventPluginRegistry');\nvar ReactBrowserEventEmitter = require('./ReactBrowserEventEmitter');\nvar ReactDOMComponentFlags = require('./ReactDOMComponentFlags');\nvar ReactDOMComponentTree = require('./ReactDOMComponentTree');\nvar ReactDOMInput = require('./ReactDOMInput');\nvar ReactDOMOption = require('./ReactDOMOption');\nvar ReactDOMSelect = require('./ReactDOMSelect');\nvar ReactDOMTextarea = require('./ReactDOMTextarea');\nvar ReactInstrumentation = require('./ReactInstrumentation');\nvar ReactMultiChild = require('./ReactMultiChild');\nvar ReactServerRenderingTransaction = require('./ReactServerRenderingTransaction');\n\nvar emptyFunction = require('fbjs/lib/emptyFunction');\nvar escapeTextContentForBrowser = require('./escapeTextContentForBrowser');\nvar invariant = require('fbjs/lib/invariant');\nvar isEventSupported = require('./isEventSupported');\nvar shallowEqual = require('fbjs/lib/shallowEqual');\nvar validateDOMNesting = require('./validateDOMNesting');\nvar warning = require('fbjs/lib/warning');\n\nvar Flags = ReactDOMComponentFlags;\nvar deleteListener = EventPluginHub.deleteListener;\nvar getNode = ReactDOMComponentTree.getNodeFromInstance;\nvar listenTo = ReactBrowserEventEmitter.listenTo;\nvar registrationNameModules = EventPluginRegistry.registrationNameModules;\n\n// For quickly matching children type, to test if can be treated as content.\nvar CONTENT_TYPES = { 'string': true, 'number': true };\n\nvar STYLE = 'style';\nvar HTML = '__html';\nvar RESERVED_PROPS = {\n  children: null,\n  dangerouslySetInnerHTML: null,\n  suppressContentEditableWarning: null\n};\n\n// Node type for document fragments (Node.DOCUMENT_FRAGMENT_NODE).\nvar DOC_FRAGMENT_TYPE = 11;\n\nfunction getDeclarationErrorAddendum(internalInstance) {\n  if (internalInstance) {\n    var owner = internalInstance._currentElement._owner || null;\n    if (owner) {\n      var name = owner.getName();\n      if (name) {\n        return ' This DOM node was rendered by `' + name + '`.';\n      }\n    }\n  }\n  return '';\n}\n\nfunction friendlyStringify(obj) {\n  if (typeof obj === 'object') {\n    if (Array.isArray(obj)) {\n      return '[' + obj.map(friendlyStringify).join(', ') + ']';\n    } else {\n      var pairs = [];\n      for (var key in obj) {\n        if (Object.prototype.hasOwnProperty.call(obj, key)) {\n          var keyEscaped = /^[a-z$_][\\w$_]*$/i.test(key) ? key : JSON.stringify(key);\n          pairs.push(keyEscaped + ': ' + friendlyStringify(obj[key]));\n        }\n      }\n      return '{' + pairs.join(', ') + '}';\n    }\n  } else if (typeof obj === 'string') {\n    return JSON.stringify(obj);\n  } else if (typeof obj === 'function') {\n    return '[function object]';\n  }\n  // Differs from JSON.stringify in that undefined because undefined and that\n  // inf and nan don't become null\n  return String(obj);\n}\n\nvar styleMutationWarning = {};\n\nfunction checkAndWarnForMutatedStyle(style1, style2, component) {\n  if (style1 == null || style2 == null) {\n    return;\n  }\n  if (shallowEqual(style1, style2)) {\n    return;\n  }\n\n  var componentName = component._tag;\n  var owner = component._currentElement._owner;\n  var ownerName;\n  if (owner) {\n    ownerName = owner.getName();\n  }\n\n  var hash = ownerName + '|' + componentName;\n\n  if (styleMutationWarning.hasOwnProperty(hash)) {\n    return;\n  }\n\n  styleMutationWarning[hash] = true;\n\n  process.env.NODE_ENV !== 'production' ? warning(false, '`%s` was passed a style object that has previously been mutated. ' + 'Mutating `style` is deprecated. Consider cloning it beforehand. Check ' + 'the `render` %s. Previous style: %s. Mutated style: %s.', componentName, owner ? 'of `' + ownerName + '`' : 'using <' + componentName + '>', friendlyStringify(style1), friendlyStringify(style2)) : void 0;\n}\n\n/**\n * @param {object} component\n * @param {?object} props\n */\nfunction assertValidProps(component, props) {\n  if (!props) {\n    return;\n  }\n  // Note the use of `==` which checks for null or undefined.\n  if (voidElementTags[component._tag]) {\n    !(props.children == null && props.dangerouslySetInnerHTML == null) ? process.env.NODE_ENV !== 'production' ? invariant(false, '%s is a void element tag and must neither have `children` nor use `dangerouslySetInnerHTML`.%s', component._tag, component._currentElement._owner ? ' Check the render method of ' + component._currentElement._owner.getName() + '.' : '') : _prodInvariant('137', component._tag, component._currentElement._owner ? ' Check the render method of ' + component._currentElement._owner.getName() + '.' : '') : void 0;\n  }\n  if (props.dangerouslySetInnerHTML != null) {\n    !(props.children == null) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Can only set one of `children` or `props.dangerouslySetInnerHTML`.') : _prodInvariant('60') : void 0;\n    !(typeof props.dangerouslySetInnerHTML === 'object' && HTML in props.dangerouslySetInnerHTML) ? process.env.NODE_ENV !== 'production' ? invariant(false, '`props.dangerouslySetInnerHTML` must be in the form `{__html: ...}`. Please visit https://fb.me/react-invariant-dangerously-set-inner-html for more information.') : _prodInvariant('61') : void 0;\n  }\n  if (process.env.NODE_ENV !== 'production') {\n    process.env.NODE_ENV !== 'production' ? warning(props.innerHTML == null, 'Directly setting property `innerHTML` is not permitted. ' + 'For more information, lookup documentation on `dangerouslySetInnerHTML`.') : void 0;\n    process.env.NODE_ENV !== 'production' ? warning(props.suppressContentEditableWarning || !props.contentEditable || props.children == null, '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.') : void 0;\n    process.env.NODE_ENV !== 'production' ? warning(props.onFocusIn == null && props.onFocusOut == null, 'React uses onFocus and onBlur instead of onFocusIn and onFocusOut. ' + 'All React events are normalized to bubble, so onFocusIn and onFocusOut ' + 'are not needed/supported by React.') : void 0;\n  }\n  !(props.style == null || typeof props.style === 'object') ? process.env.NODE_ENV !== 'production' ? invariant(false, 'The `style` prop expects a mapping from style properties to values, not a string. For example, style={{marginRight: spacing + \\'em\\'}} when using JSX.%s', getDeclarationErrorAddendum(component)) : _prodInvariant('62', getDeclarationErrorAddendum(component)) : void 0;\n}\n\nfunction enqueuePutListener(inst, registrationName, listener, transaction) {\n  if (transaction instanceof ReactServerRenderingTransaction) {\n    return;\n  }\n  if (process.env.NODE_ENV !== 'production') {\n    // IE8 has no API for event capturing and the `onScroll` event doesn't\n    // bubble.\n    process.env.NODE_ENV !== 'production' ? warning(registrationName !== 'onScroll' || isEventSupported('scroll', true), 'This browser doesn\\'t support the `onScroll` event') : void 0;\n  }\n  var containerInfo = inst._hostContainerInfo;\n  var isDocumentFragment = containerInfo._node && containerInfo._node.nodeType === DOC_FRAGMENT_TYPE;\n  var doc = isDocumentFragment ? containerInfo._node : containerInfo._ownerDocument;\n  listenTo(registrationName, doc);\n  transaction.getReactMountReady().enqueue(putListener, {\n    inst: inst,\n    registrationName: registrationName,\n    listener: listener\n  });\n}\n\nfunction putListener() {\n  var listenerToPut = this;\n  EventPluginHub.putListener(listenerToPut.inst, listenerToPut.registrationName, listenerToPut.listener);\n}\n\nfunction inputPostMount() {\n  var inst = this;\n  ReactDOMInput.postMountWrapper(inst);\n}\n\nfunction textareaPostMount() {\n  var inst = this;\n  ReactDOMTextarea.postMountWrapper(inst);\n}\n\nfunction optionPostMount() {\n  var inst = this;\n  ReactDOMOption.postMountWrapper(inst);\n}\n\nvar setAndValidateContentChildDev = emptyFunction;\nif (process.env.NODE_ENV !== 'production') {\n  setAndValidateContentChildDev = function (content) {\n    var hasExistingContent = this._contentDebugID != null;\n    var debugID = this._debugID;\n    // This ID represents the inlined child that has no backing instance:\n    var contentDebugID = -debugID;\n\n    if (content == null) {\n      if (hasExistingContent) {\n        ReactInstrumentation.debugTool.onUnmountComponent(this._contentDebugID);\n      }\n      this._contentDebugID = null;\n      return;\n    }\n\n    validateDOMNesting(null, String(content), this, this._ancestorInfo);\n    this._contentDebugID = contentDebugID;\n    if (hasExistingContent) {\n      ReactInstrumentation.debugTool.onBeforeUpdateComponent(contentDebugID, content);\n      ReactInstrumentation.debugTool.onUpdateComponent(contentDebugID);\n    } else {\n      ReactInstrumentation.debugTool.onBeforeMountComponent(contentDebugID, content, debugID);\n      ReactInstrumentation.debugTool.onMountComponent(contentDebugID);\n      ReactInstrumentation.debugTool.onSetChildren(debugID, [contentDebugID]);\n    }\n  };\n}\n\n// There are so many media events, it makes sense to just\n// maintain a list rather than create a `trapBubbledEvent` for each\nvar mediaEvents = {\n  topAbort: 'abort',\n  topCanPlay: 'canplay',\n  topCanPlayThrough: 'canplaythrough',\n  topDurationChange: 'durationchange',\n  topEmptied: 'emptied',\n  topEncrypted: 'encrypted',\n  topEnded: 'ended',\n  topError: 'error',\n  topLoadedData: 'loadeddata',\n  topLoadedMetadata: 'loadedmetadata',\n  topLoadStart: 'loadstart',\n  topPause: 'pause',\n  topPlay: 'play',\n  topPlaying: 'playing',\n  topProgress: 'progress',\n  topRateChange: 'ratechange',\n  topSeeked: 'seeked',\n  topSeeking: 'seeking',\n  topStalled: 'stalled',\n  topSuspend: 'suspend',\n  topTimeUpdate: 'timeupdate',\n  topVolumeChange: 'volumechange',\n  topWaiting: 'waiting'\n};\n\nfunction trapBubbledEventsLocal() {\n  var inst = this;\n  // If a component renders to null or if another component fatals and causes\n  // the state of the tree to be corrupted, `node` here can be null.\n  !inst._rootNodeID ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Must be mounted to trap events') : _prodInvariant('63') : void 0;\n  var node = getNode(inst);\n  !node ? process.env.NODE_ENV !== 'production' ? invariant(false, 'trapBubbledEvent(...): Requires node to be rendered.') : _prodInvariant('64') : void 0;\n\n  switch (inst._tag) {\n    case 'iframe':\n    case 'object':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topLoad', 'load', node)];\n      break;\n    case 'video':\n    case 'audio':\n\n      inst._wrapperState.listeners = [];\n      // Create listener for each media event\n      for (var event in mediaEvents) {\n        if (mediaEvents.hasOwnProperty(event)) {\n          inst._wrapperState.listeners.push(ReactBrowserEventEmitter.trapBubbledEvent(event, mediaEvents[event], node));\n        }\n      }\n      break;\n    case 'source':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topError', 'error', node)];\n      break;\n    case 'img':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topError', 'error', node), ReactBrowserEventEmitter.trapBubbledEvent('topLoad', 'load', node)];\n      break;\n    case 'form':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topReset', 'reset', node), ReactBrowserEventEmitter.trapBubbledEvent('topSubmit', 'submit', node)];\n      break;\n    case 'input':\n    case 'select':\n    case 'textarea':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topInvalid', 'invalid', node)];\n      break;\n  }\n}\n\nfunction postUpdateSelectWrapper() {\n  ReactDOMSelect.postUpdateWrapper(this);\n}\n\n// For HTML, certain tags should omit their close tag. We keep a whitelist for\n// those special-case tags.\n\nvar omittedCloseTags = {\n  'area': true,\n  'base': true,\n  'br': true,\n  'col': true,\n  'embed': true,\n  'hr': true,\n  'img': true,\n  'input': true,\n  'keygen': true,\n  'link': true,\n  'meta': true,\n  'param': true,\n  'source': true,\n  'track': true,\n  'wbr': true\n};\n\nvar newlineEatingTags = {\n  'listing': true,\n  'pre': true,\n  'textarea': true\n};\n\n// For HTML, certain tags cannot have children. This has the same purpose as\n// `omittedCloseTags` except that `menuitem` should still have its closing tag.\n\nvar voidElementTags = _assign({\n  'menuitem': true\n}, omittedCloseTags);\n\n// We accept any tag to be rendered but since this gets injected into arbitrary\n// HTML, we want to make sure that it's a safe tag.\n// http://www.w3.org/TR/REC-xml/#NT-Name\n\nvar VALID_TAG_REGEX = /^[a-zA-Z][a-zA-Z:_\\.\\-\\d]*$/; // Simplified subset\nvar validatedTagCache = {};\nvar hasOwnProperty = {}.hasOwnProperty;\n\nfunction validateDangerousTag(tag) {\n  if (!hasOwnProperty.call(validatedTagCache, tag)) {\n    !VALID_TAG_REGEX.test(tag) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Invalid tag: %s', tag) : _prodInvariant('65', tag) : void 0;\n    validatedTagCache[tag] = true;\n  }\n}\n\nfunction isCustomComponent(tagName, props) {\n  return tagName.indexOf('-') >= 0 || props.is != null;\n}\n\nvar globalIdCounter = 1;\n\n/**\n * Creates a new React class that is idempotent and capable of containing other\n * React components. It accepts event listeners and DOM properties that are\n * valid according to `DOMProperty`.\n *\n *  - Event listeners: `onClick`, `onMouseDown`, etc.\n *  - DOM properties: `className`, `name`, `title`, etc.\n *\n * The `style` property functions differently from the DOM API. It accepts an\n * object mapping of style properties to values.\n *\n * @constructor ReactDOMComponent\n * @extends ReactMultiChild\n */\nfunction ReactDOMComponent(element) {\n  var tag = element.type;\n  validateDangerousTag(tag);\n  this._currentElement = element;\n  this._tag = tag.toLowerCase();\n  this._namespaceURI = null;\n  this._renderedChildren = null;\n  this._previousStyle = null;\n  this._previousStyleCopy = null;\n  this._hostNode = null;\n  this._hostParent = null;\n  this._rootNodeID = 0;\n  this._domID = 0;\n  this._hostContainerInfo = null;\n  this._wrapperState = null;\n  this._topLevelWrapper = null;\n  this._flags = 0;\n  if (process.env.NODE_ENV !== 'production') {\n    this._ancestorInfo = null;\n    setAndValidateContentChildDev.call(this, null);\n  }\n}\n\nReactDOMComponent.displayName = 'ReactDOMComponent';\n\nReactDOMComponent.Mixin = {\n\n  /**\n   * Generates root tag markup then recurses. This method has side effects and\n   * is not idempotent.\n   *\n   * @internal\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {?ReactDOMComponent} the parent component instance\n   * @param {?object} info about the host container\n   * @param {object} context\n   * @return {string} The computed markup.\n   */\n  mountComponent: function (transaction, hostParent, hostContainerInfo, context) {\n    this._rootNodeID = globalIdCounter++;\n    this._domID = hostContainerInfo._idCounter++;\n    this._hostParent = hostParent;\n    this._hostContainerInfo = hostContainerInfo;\n\n    var props = this._currentElement.props;\n\n    switch (this._tag) {\n      case 'audio':\n      case 'form':\n      case 'iframe':\n      case 'img':\n      case 'link':\n      case 'object':\n      case 'source':\n      case 'video':\n        this._wrapperState = {\n          listeners: null\n        };\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n      case 'input':\n        ReactDOMInput.mountWrapper(this, props, hostParent);\n        props = ReactDOMInput.getHostProps(this, props);\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n      case 'option':\n        ReactDOMOption.mountWrapper(this, props, hostParent);\n        props = ReactDOMOption.getHostProps(this, props);\n        break;\n      case 'select':\n        ReactDOMSelect.mountWrapper(this, props, hostParent);\n        props = ReactDOMSelect.getHostProps(this, props);\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n      case 'textarea':\n        ReactDOMTextarea.mountWrapper(this, props, hostParent);\n        props = ReactDOMTextarea.getHostProps(this, props);\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n    }\n\n    assertValidProps(this, props);\n\n    // We create tags in the namespace of their parent container, except HTML\n    // tags get no namespace.\n    var namespaceURI;\n    var parentTag;\n    if (hostParent != null) {\n      namespaceURI = hostParent._namespaceURI;\n      parentTag = hostParent._tag;\n    } else if (hostContainerInfo._tag) {\n      namespaceURI = hostContainerInfo._namespaceURI;\n      parentTag = hostContainerInfo._tag;\n    }\n    if (namespaceURI == null || namespaceURI === DOMNamespaces.svg && parentTag === 'foreignobject') {\n      namespaceURI = DOMNamespaces.html;\n    }\n    if (namespaceURI === DOMNamespaces.html) {\n      if (this._tag === 'svg') {\n        namespaceURI = DOMNamespaces.svg;\n      } else if (this._tag === 'math') {\n        namespaceURI = DOMNamespaces.mathml;\n      }\n    }\n    this._namespaceURI = namespaceURI;\n\n    if (process.env.NODE_ENV !== 'production') {\n      var parentInfo;\n      if (hostParent != null) {\n        parentInfo = hostParent._ancestorInfo;\n      } else if (hostContainerInfo._tag) {\n        parentInfo = hostContainerInfo._ancestorInfo;\n      }\n      if (parentInfo) {\n        // parentInfo should always be present except for the top-level\n        // component when server rendering\n        validateDOMNesting(this._tag, null, this, parentInfo);\n      }\n      this._ancestorInfo = validateDOMNesting.updatedAncestorInfo(parentInfo, this._tag, this);\n    }\n\n    var mountImage;\n    if (transaction.useCreateElement) {\n      var ownerDocument = hostContainerInfo._ownerDocument;\n      var el;\n      if (namespaceURI === DOMNamespaces.html) {\n        if (this._tag === 'script') {\n          // Create the script via .innerHTML so its \"parser-inserted\" flag is\n          // set to true and it does not execute\n          var div = ownerDocument.createElement('div');\n          var type = this._currentElement.type;\n          div.innerHTML = '<' + type + '></' + type + '>';\n          el = div.removeChild(div.firstChild);\n        } else if (props.is) {\n          el = ownerDocument.createElement(this._currentElement.type, props.is);\n        } else {\n          // Separate else branch instead of using `props.is || undefined` above becuase of a Firefox bug.\n          // See discussion in https://github.com/facebook/react/pull/6896\n          // and discussion in https://bugzilla.mozilla.org/show_bug.cgi?id=1276240\n          el = ownerDocument.createElement(this._currentElement.type);\n        }\n      } else {\n        el = ownerDocument.createElementNS(namespaceURI, this._currentElement.type);\n      }\n      ReactDOMComponentTree.precacheNode(this, el);\n      this._flags |= Flags.hasCachedChildNodes;\n      if (!this._hostParent) {\n        DOMPropertyOperations.setAttributeForRoot(el);\n      }\n      this._updateDOMProperties(null, props, transaction);\n      var lazyTree = DOMLazyTree(el);\n      this._createInitialChildren(transaction, props, context, lazyTree);\n      mountImage = lazyTree;\n    } else {\n      var tagOpen = this._createOpenTagMarkupAndPutListeners(transaction, props);\n      var tagContent = this._createContentMarkup(transaction, props, context);\n      if (!tagContent && omittedCloseTags[this._tag]) {\n        mountImage = tagOpen + '/>';\n      } else {\n        mountImage = tagOpen + '>' + tagContent + '</' + this._currentElement.type + '>';\n      }\n    }\n\n    switch (this._tag) {\n      case 'input':\n        transaction.getReactMountReady().enqueue(inputPostMount, this);\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'textarea':\n        transaction.getReactMountReady().enqueue(textareaPostMount, this);\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'select':\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'button':\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'option':\n        transaction.getReactMountReady().enqueue(optionPostMount, this);\n        break;\n    }\n\n    return mountImage;\n  },\n\n  /**\n   * Creates markup for the open tag and all attributes.\n   *\n   * This method has side effects because events get registered.\n   *\n   * Iterating over object properties is faster than iterating over arrays.\n   * @see http://jsperf.com/obj-vs-arr-iteration\n   *\n   * @private\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {object} props\n   * @return {string} Markup of opening tag.\n   */\n  _createOpenTagMarkupAndPutListeners: function (transaction, props) {\n    var ret = '<' + this._currentElement.type;\n\n    for (var propKey in props) {\n      if (!props.hasOwnProperty(propKey)) {\n        continue;\n      }\n      var propValue = props[propKey];\n      if (propValue == null) {\n        continue;\n      }\n      if (registrationNameModules.hasOwnProperty(propKey)) {\n        if (propValue) {\n          enqueuePutListener(this, propKey, propValue, transaction);\n        }\n      } else {\n        if (propKey === STYLE) {\n          if (propValue) {\n            if (process.env.NODE_ENV !== 'production') {\n              // See `_updateDOMProperties`. style block\n              this._previousStyle = propValue;\n            }\n            propValue = this._previousStyleCopy = _assign({}, props.style);\n          }\n          propValue = CSSPropertyOperations.createMarkupForStyles(propValue, this);\n        }\n        var markup = null;\n        if (this._tag != null && isCustomComponent(this._tag, props)) {\n          if (!RESERVED_PROPS.hasOwnProperty(propKey)) {\n            markup = DOMPropertyOperations.createMarkupForCustomAttribute(propKey, propValue);\n          }\n        } else {\n          markup = DOMPropertyOperations.createMarkupForProperty(propKey, propValue);\n        }\n        if (markup) {\n          ret += ' ' + markup;\n        }\n      }\n    }\n\n    // For static pages, no need to put React ID and checksum. Saves lots of\n    // bytes.\n    if (transaction.renderToStaticMarkup) {\n      return ret;\n    }\n\n    if (!this._hostParent) {\n      ret += ' ' + DOMPropertyOperations.createMarkupForRoot();\n    }\n    ret += ' ' + DOMPropertyOperations.createMarkupForID(this._domID);\n    return ret;\n  },\n\n  /**\n   * Creates markup for the content between the tags.\n   *\n   * @private\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {object} props\n   * @param {object} context\n   * @return {string} Content markup.\n   */\n  _createContentMarkup: function (transaction, props, context) {\n    var ret = '';\n\n    // Intentional use of != to avoid catching zero/false.\n    var innerHTML = props.dangerouslySetInnerHTML;\n    if (innerHTML != null) {\n      if (innerHTML.__html != null) {\n        ret = innerHTML.__html;\n      }\n    } else {\n      var contentToUse = CONTENT_TYPES[typeof props.children] ? props.children : null;\n      var childrenToUse = contentToUse != null ? null : props.children;\n      if (contentToUse != null) {\n        // TODO: Validate that text is allowed as a child of this node\n        ret = escapeTextContentForBrowser(contentToUse);\n        if (process.env.NODE_ENV !== 'production') {\n          setAndValidateContentChildDev.call(this, contentToUse);\n        }\n      } else if (childrenToUse != null) {\n        var mountImages = this.mountChildren(childrenToUse, transaction, context);\n        ret = mountImages.join('');\n      }\n    }\n    if (newlineEatingTags[this._tag] && ret.charAt(0) === '\\n') {\n      // text/html ignores the first character in these tags if it's a newline\n      // Prefer to break application/xml over text/html (for now) by adding\n      // a newline specifically to get eaten by the parser. (Alternately for\n      // textareas, replacing \"^\\n\" with \"\\r\\n\" doesn't get eaten, and the first\n      // \\r is normalized out by HTMLTextAreaElement#value.)\n      // See: <http://www.w3.org/TR/html-polyglot/#newlines-in-textarea-and-pre>\n      // See: <http://www.w3.org/TR/html5/syntax.html#element-restrictions>\n      // See: <http://www.w3.org/TR/html5/syntax.html#newlines>\n      // See: Parsing of \"textarea\" \"listing\" and \"pre\" elements\n      //  from <http://www.w3.org/TR/html5/syntax.html#parsing-main-inbody>\n      return '\\n' + ret;\n    } else {\n      return ret;\n    }\n  },\n\n  _createInitialChildren: function (transaction, props, context, lazyTree) {\n    // Intentional use of != to avoid catching zero/false.\n    var innerHTML = props.dangerouslySetInnerHTML;\n    if (innerHTML != null) {\n      if (innerHTML.__html != null) {\n        DOMLazyTree.queueHTML(lazyTree, innerHTML.__html);\n      }\n    } else {\n      var contentToUse = CONTENT_TYPES[typeof props.children] ? props.children : null;\n      var childrenToUse = contentToUse != null ? null : props.children;\n      // TODO: Validate that text is allowed as a child of this node\n      if (contentToUse != null) {\n        // Avoid setting textContent when the text is empty. In IE11 setting\n        // textContent on a text area will cause the placeholder to not\n        // show within the textarea until it has been focused and blurred again.\n        // https://github.com/facebook/react/issues/6731#issuecomment-254874553\n        if (contentToUse !== '') {\n          if (process.env.NODE_ENV !== 'production') {\n            setAndValidateContentChildDev.call(this, contentToUse);\n          }\n          DOMLazyTree.queueText(lazyTree, contentToUse);\n        }\n      } else if (childrenToUse != null) {\n        var mountImages = this.mountChildren(childrenToUse, transaction, context);\n        for (var i = 0; i < mountImages.length; i++) {\n          DOMLazyTree.queueChild(lazyTree, mountImages[i]);\n        }\n      }\n    }\n  },\n\n  /**\n   * Receives a next element and updates the component.\n   *\n   * @internal\n   * @param {ReactElement} nextElement\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {object} context\n   */\n  receiveComponent: function (nextElement, transaction, context) {\n    var prevElement = this._currentElement;\n    this._currentElement = nextElement;\n    this.updateComponent(transaction, prevElement, nextElement, context);\n  },\n\n  /**\n   * Updates a DOM component after it has already been allocated and\n   * attached to the DOM. Reconciles the root DOM node, then recurses.\n   *\n   * @param {ReactReconcileTransaction} transaction\n   * @param {ReactElement} prevElement\n   * @param {ReactElement} nextElement\n   * @internal\n   * @overridable\n   */\n  updateComponent: function (transaction, prevElement, nextElement, context) {\n    var lastProps = prevElement.props;\n    var nextProps = this._currentElement.props;\n\n    switch (this._tag) {\n      case 'input':\n        lastProps = ReactDOMInput.getHostProps(this, lastProps);\n        nextProps = ReactDOMInput.getHostProps(this, nextProps);\n        break;\n      case 'option':\n        lastProps = ReactDOMOption.getHostProps(this, lastProps);\n        nextProps = ReactDOMOption.getHostProps(this, nextProps);\n        break;\n      case 'select':\n        lastProps = ReactDOMSelect.getHostProps(this, lastProps);\n        nextProps = ReactDOMSelect.getHostProps(this, nextProps);\n        break;\n      case 'textarea':\n        lastProps = ReactDOMTextarea.getHostProps(this, lastProps);\n        nextProps = ReactDOMTextarea.getHostProps(this, nextProps);\n        break;\n    }\n\n    assertValidProps(this, nextProps);\n    this._updateDOMProperties(lastProps, nextProps, transaction);\n    this._updateDOMChildren(lastProps, nextProps, transaction, context);\n\n    switch (this._tag) {\n      case 'input':\n        // Update the wrapper around inputs *after* updating props. This has to\n        // happen after `_updateDOMProperties`. Otherwise HTML5 input validations\n        // raise warnings and prevent the new value from being assigned.\n        ReactDOMInput.updateWrapper(this);\n        break;\n      case 'textarea':\n        ReactDOMTextarea.updateWrapper(this);\n        break;\n      case 'select':\n        // <select> value update needs to occur after <option> children\n        // reconciliation\n        transaction.getReactMountReady().enqueue(postUpdateSelectWrapper, this);\n        break;\n    }\n  },\n\n  /**\n   * Reconciles the properties by detecting differences in property values and\n   * updating the DOM as necessary. This function is probably the single most\n   * critical path for performance optimization.\n   *\n   * TODO: Benchmark whether checking for changed values in memory actually\n   *       improves performance (especially statically positioned elements).\n   * TODO: Benchmark the effects of putting this at the top since 99% of props\n   *       do not change for a given reconciliation.\n   * TODO: Benchmark areas that can be improved with caching.\n   *\n   * @private\n   * @param {object} lastProps\n   * @param {object} nextProps\n   * @param {?DOMElement} node\n   */\n  _updateDOMProperties: function (lastProps, nextProps, transaction) {\n    var propKey;\n    var styleName;\n    var styleUpdates;\n    for (propKey in lastProps) {\n      if (nextProps.hasOwnProperty(propKey) || !lastProps.hasOwnProperty(propKey) || lastProps[propKey] == null) {\n        continue;\n      }\n      if (propKey === STYLE) {\n        var lastStyle = this._previousStyleCopy;\n        for (styleName in lastStyle) {\n          if (lastStyle.hasOwnProperty(styleName)) {\n            styleUpdates = styleUpdates || {};\n            styleUpdates[styleName] = '';\n          }\n        }\n        this._previousStyleCopy = null;\n      } else if (registrationNameModules.hasOwnProperty(propKey)) {\n        if (lastProps[propKey]) {\n          // Only call deleteListener if there was a listener previously or\n          // else willDeleteListener gets called when there wasn't actually a\n          // listener (e.g., onClick={null})\n          deleteListener(this, propKey);\n        }\n      } else if (isCustomComponent(this._tag, lastProps)) {\n        if (!RESERVED_PROPS.hasOwnProperty(propKey)) {\n          DOMPropertyOperations.deleteValueForAttribute(getNode(this), propKey);\n        }\n      } else if (DOMProperty.properties[propKey] || DOMProperty.isCustomAttribute(propKey)) {\n        DOMPropertyOperations.deleteValueForProperty(getNode(this), propKey);\n      }\n    }\n    for (propKey in nextProps) {\n      var nextProp = nextProps[propKey];\n      var lastProp = propKey === STYLE ? this._previousStyleCopy : lastProps != null ? lastProps[propKey] : undefined;\n      if (!nextProps.hasOwnProperty(propKey) || nextProp === lastProp || nextProp == null && lastProp == null) {\n        continue;\n      }\n      if (propKey === STYLE) {\n        if (nextProp) {\n          if (process.env.NODE_ENV !== 'production') {\n            checkAndWarnForMutatedStyle(this._previousStyleCopy, this._previousStyle, this);\n            this._previousStyle = nextProp;\n          }\n          nextProp = this._previousStyleCopy = _assign({}, nextProp);\n        } else {\n          this._previousStyleCopy = null;\n        }\n        if (lastProp) {\n          // Unset styles on `lastProp` but not on `nextProp`.\n          for (styleName in lastProp) {\n            if (lastProp.hasOwnProperty(styleName) && (!nextProp || !nextProp.hasOwnProperty(styleName))) {\n              styleUpdates = styleUpdates || {};\n              styleUpdates[styleName] = '';\n            }\n          }\n          // Update styles that changed since `lastProp`.\n          for (styleName in nextProp) {\n            if (nextProp.hasOwnProperty(styleName) && lastProp[styleName] !== nextProp[styleName]) {\n              styleUpdates = styleUpdates || {};\n              styleUpdates[styleName] = nextProp[styleName];\n            }\n          }\n        } else {\n          // Relies on `updateStylesByID` not mutating `styleUpdates`.\n          styleUpdates = nextProp;\n        }\n      } else if (registrationNameModules.hasOwnProperty(propKey)) {\n        if (nextProp) {\n          enqueuePutListener(this, propKey, nextProp, transaction);\n        } else if (lastProp) {\n          deleteListener(this, propKey);\n        }\n      } else if (isCustomComponent(this._tag, nextProps)) {\n        if (!RESERVED_PROPS.hasOwnProperty(propKey)) {\n          DOMPropertyOperations.setValueForAttribute(getNode(this), propKey, nextProp);\n        }\n      } else if (DOMProperty.properties[propKey] || DOMProperty.isCustomAttribute(propKey)) {\n        var node = getNode(this);\n        // If we're updating to null or undefined, we should remove the property\n        // from the DOM node instead of inadvertently setting to a string. This\n        // brings us in line with the same behavior we have on initial render.\n        if (nextProp != null) {\n          DOMPropertyOperations.setValueForProperty(node, propKey, nextProp);\n        } else {\n          DOMPropertyOperations.deleteValueForProperty(node, propKey);\n        }\n      }\n    }\n    if (styleUpdates) {\n      CSSPropertyOperations.setValueForStyles(getNode(this), styleUpdates, this);\n    }\n  },\n\n  /**\n   * Reconciles the children with the various properties that affect the\n   * children content.\n   *\n   * @param {object} lastProps\n   * @param {object} nextProps\n   * @param {ReactReconcileTransaction} transaction\n   * @param {object} context\n   */\n  _updateDOMChildren: function (lastProps, nextProps, transaction, context) {\n    var lastContent = CONTENT_TYPES[typeof lastProps.children] ? lastProps.children : null;\n    var nextContent = CONTENT_TYPES[typeof nextProps.children] ? nextProps.children : null;\n\n    var lastHtml = lastProps.dangerouslySetInnerHTML && lastProps.dangerouslySetInnerHTML.__html;\n    var nextHtml = nextProps.dangerouslySetInnerHTML && nextProps.dangerouslySetInnerHTML.__html;\n\n    // Note the use of `!=` which checks for null or undefined.\n    var lastChildren = lastContent != null ? null : lastProps.children;\n    var nextChildren = nextContent != null ? null : nextProps.children;\n\n    // If we're switching from children to content/html or vice versa, remove\n    // the old content\n    var lastHasContentOrHtml = lastContent != null || lastHtml != null;\n    var nextHasContentOrHtml = nextContent != null || nextHtml != null;\n    if (lastChildren != null && nextChildren == null) {\n      this.updateChildren(null, transaction, context);\n    } else if (lastHasContentOrHtml && !nextHasContentOrHtml) {\n      this.updateTextContent('');\n      if (process.env.NODE_ENV !== 'production') {\n        ReactInstrumentation.debugTool.onSetChildren(this._debugID, []);\n      }\n    }\n\n    if (nextContent != null) {\n      if (lastContent !== nextContent) {\n        this.updateTextContent('' + nextContent);\n        if (process.env.NODE_ENV !== 'production') {\n          setAndValidateContentChildDev.call(this, nextContent);\n        }\n      }\n    } else if (nextHtml != null) {\n      if (lastHtml !== nextHtml) {\n        this.updateMarkup('' + nextHtml);\n      }\n      if (process.env.NODE_ENV !== 'production') {\n        ReactInstrumentation.debugTool.onSetChildren(this._debugID, []);\n      }\n    } else if (nextChildren != null) {\n      if (process.env.NODE_ENV !== 'production') {\n        setAndValidateContentChildDev.call(this, null);\n      }\n\n      this.updateChildren(nextChildren, transaction, context);\n    }\n  },\n\n  getHostNode: function () {\n    return getNode(this);\n  },\n\n  /**\n   * Destroys all event registrations for this instance. Does not remove from\n   * the DOM. That must be done by the parent.\n   *\n   * @internal\n   */\n  unmountComponent: function (safely) {\n    switch (this._tag) {\n      case 'audio':\n      case 'form':\n      case 'iframe':\n      case 'img':\n      case 'link':\n      case 'object':\n      case 'source':\n      case 'video':\n        var listeners = this._wrapperState.listeners;\n        if (listeners) {\n          for (var i = 0; i < listeners.length; i++) {\n            listeners[i].remove();\n          }\n        }\n        break;\n      case 'html':\n      case 'head':\n      case 'body':\n        /**\n         * Components like <html> <head> and <body> can't be removed or added\n         * easily in a cross-browser way, however it's valuable to be able to\n         * take advantage of React's reconciliation for styling and <title>\n         * management. So we just document it and throw in dangerous cases.\n         */\n        !false ? process.env.NODE_ENV !== 'production' ? invariant(false, '<%s> tried to unmount. Because of cross-browser quirks it is impossible to unmount some top-level components (eg <html>, <head>, and <body>) reliably and efficiently. To fix this, have a single top-level component that never unmounts render these elements.', this._tag) : _prodInvariant('66', this._tag) : void 0;\n        break;\n    }\n\n    this.unmountChildren(safely);\n    ReactDOMComponentTree.uncacheNode(this);\n    EventPluginHub.deleteAllListeners(this);\n    this._rootNodeID = 0;\n    this._domID = 0;\n    this._wrapperState = null;\n\n    if (process.env.NODE_ENV !== 'production') {\n      setAndValidateContentChildDev.call(this, null);\n    }\n  },\n\n  getPublicInstance: function () {\n    return getNode(this);\n  }\n\n};\n\n_assign(ReactDOMComponent.prototype, ReactDOMComponent.Mixin, ReactMultiChild.Mixin);\n\nmodule.exports = ReactDOMComponent;\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/react-dom/lib/ReactDOMComponent.js\n// module id = 265\n// module chunks = 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TODO found
Open

    eval("/* WEBPACK VAR INJECTION */(function(process) {/**\n * Copyright 2014-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n'use strict';\n\nvar ReactReconciler = __webpack_require__(232);\n\nvar instantiateReactComponent = __webpack_require__(291);\nvar KeyEscapeUtils = __webpack_require__(301);\nvar shouldUpdateReactComponent = __webpack_require__(297);\nvar traverseAllChildren = __webpack_require__(302);\nvar warning = __webpack_require__(183);\n\nvar ReactComponentTreeHook;\n\nif (typeof process !== 'undefined' && process.env && (\"development\") === 'test') {\n  // Temporary hack.\n  // Inline requires don't work well with Jest:\n  // https://github.com/facebook/react/issues/7240\n  // Remove the inline requires when we don't need them anymore:\n  // https://github.com/facebook/react/pull/7178\n  ReactComponentTreeHook = __webpack_require__(198);\n}\n\nfunction instantiateChild(childInstances, child, name, selfDebugID) {\n  // We found a component instance.\n  var keyUnique = childInstances[name] === undefined;\n  if (true) {\n    if (!ReactComponentTreeHook) {\n      ReactComponentTreeHook = __webpack_require__(198);\n    }\n    if (!keyUnique) {\n       true ? warning(false, 'flattenChildren(...): 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.%s', KeyEscapeUtils.unescape(name), ReactComponentTreeHook.getStackAddendumByID(selfDebugID)) : void 0;\n    }\n  }\n  if (child != null && keyUnique) {\n    childInstances[name] = instantiateReactComponent(child, true);\n  }\n}\n\n/**\n * ReactChildReconciler provides helpers for initializing or updating a set of\n * children. Its output is suitable for passing it onto ReactMultiChild which\n * does diffed reordering and insertion.\n */\nvar ReactChildReconciler = {\n  /**\n   * Generates a \"mount image\" for each of the supplied children. In the case\n   * of `ReactDOMComponent`, a mount image is a string of markup.\n   *\n   * @param {?object} nestedChildNodes Nested child maps.\n   * @return {?object} A set of child instances.\n   * @internal\n   */\n  instantiateChildren: function (nestedChildNodes, transaction, context, selfDebugID // 0 in production and for roots\n  ) {\n    if (nestedChildNodes == null) {\n      return null;\n    }\n    var childInstances = {};\n\n    if (true) {\n      traverseAllChildren(nestedChildNodes, function (childInsts, child, name) {\n        return instantiateChild(childInsts, child, name, selfDebugID);\n      }, childInstances);\n    } else {\n      traverseAllChildren(nestedChildNodes, instantiateChild, childInstances);\n    }\n    return childInstances;\n  },\n\n  /**\n   * Updates the rendered children and returns a new set of children.\n   *\n   * @param {?object} prevChildren Previously initialized set of children.\n   * @param {?object} nextChildren Flat child element maps.\n   * @param {ReactReconcileTransaction} transaction\n   * @param {object} context\n   * @return {?object} A new set of child instances.\n   * @internal\n   */\n  updateChildren: function (prevChildren, nextChildren, mountImages, removedNodes, transaction, hostParent, hostContainerInfo, context, selfDebugID // 0 in production and for roots\n  ) {\n    // We currently don't have a way to track moves here but if we use iterators\n    // instead of for..in we can zip the iterators and check if an item has\n    // moved.\n    // TODO: If nothing has changed, return the prevChildren object so that we\n    // can quickly bailout if nothing has changed.\n    if (!nextChildren && !prevChildren) {\n      return;\n    }\n    var name;\n    var prevChild;\n    for (name in nextChildren) {\n      if (!nextChildren.hasOwnProperty(name)) {\n        continue;\n      }\n      prevChild = prevChildren && prevChildren[name];\n      var prevElement = prevChild && prevChild._currentElement;\n      var nextElement = nextChildren[name];\n      if (prevChild != null && shouldUpdateReactComponent(prevElement, nextElement)) {\n        ReactReconciler.receiveComponent(prevChild, nextElement, transaction, context);\n        nextChildren[name] = prevChild;\n      } else {\n        if (prevChild) {\n          removedNodes[name] = ReactReconciler.getHostNode(prevChild);\n          ReactReconciler.unmountComponent(prevChild, false);\n        }\n        // The child must be instantiated before it's mounted.\n        var nextChildInstance = instantiateReactComponent(nextElement, true);\n        nextChildren[name] = nextChildInstance;\n        // Creating mount image now ensures refs are resolved in right order\n        // (see https://github.com/facebook/react/pull/7101 for explanation).\n        var nextChildMountImage = ReactReconciler.mountComponent(nextChildInstance, transaction, hostParent, hostContainerInfo, context, selfDebugID);\n        mountImages.push(nextChildMountImage);\n      }\n    }\n    // Unmount children that are no longer present.\n    for (name in prevChildren) {\n      if (prevChildren.hasOwnProperty(name) && !(nextChildren && nextChildren.hasOwnProperty(name))) {\n        prevChild = prevChildren[name];\n        removedNodes[name] = ReactReconciler.getHostNode(prevChild);\n        ReactReconciler.unmountComponent(prevChild, false);\n      }\n    }\n  },\n\n  /**\n   * Unmounts all rendered children. This should be used to clean up children\n   * when this component is unmounted.\n   *\n   * @param {?object} renderedChildren Previously initialized set of children.\n   * @internal\n   */\n  unmountChildren: function (renderedChildren, safely) {\n    for (var name in renderedChildren) {\n      if (renderedChildren.hasOwnProperty(name)) {\n        var renderedChild = renderedChildren[name];\n        ReactReconciler.unmountComponent(renderedChild, safely);\n      }\n    }\n  }\n\n};\n\nmodule.exports = ReactChildReconciler;\n/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(200)))//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"290.js","sources":["/home/ubuntu/workspace/node_modules/react-dom/lib/ReactChildReconciler.js"],"sourcesContent":["/**\n * Copyright 2014-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n'use strict';\n\nvar ReactReconciler = require('./ReactReconciler');\n\nvar instantiateReactComponent = require('./instantiateReactComponent');\nvar KeyEscapeUtils = require('./KeyEscapeUtils');\nvar shouldUpdateReactComponent = require('./shouldUpdateReactComponent');\nvar traverseAllChildren = require('./traverseAllChildren');\nvar warning = require('fbjs/lib/warning');\n\nvar ReactComponentTreeHook;\n\nif (typeof process !== 'undefined' && process.env && process.env.NODE_ENV === 'test') {\n  // Temporary hack.\n  // Inline requires don't work well with Jest:\n  // https://github.com/facebook/react/issues/7240\n  // Remove the inline requires when we don't need them anymore:\n  // https://github.com/facebook/react/pull/7178\n  ReactComponentTreeHook = require('react/lib/ReactComponentTreeHook');\n}\n\nfunction instantiateChild(childInstances, child, name, selfDebugID) {\n  // We found a component instance.\n  var keyUnique = childInstances[name] === undefined;\n  if (process.env.NODE_ENV !== 'production') {\n    if (!ReactComponentTreeHook) {\n      ReactComponentTreeHook = require('react/lib/ReactComponentTreeHook');\n    }\n    if (!keyUnique) {\n      process.env.NODE_ENV !== 'production' ? warning(false, 'flattenChildren(...): 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.%s', KeyEscapeUtils.unescape(name), ReactComponentTreeHook.getStackAddendumByID(selfDebugID)) : void 0;\n    }\n  }\n  if (child != null && keyUnique) {\n    childInstances[name] = instantiateReactComponent(child, true);\n  }\n}\n\n/**\n * ReactChildReconciler provides helpers for initializing or updating a set of\n * children. Its output is suitable for passing it onto ReactMultiChild which\n * does diffed reordering and insertion.\n */\nvar ReactChildReconciler = {\n  /**\n   * Generates a \"mount image\" for each of the supplied children. In the case\n   * of `ReactDOMComponent`, a mount image is a string of markup.\n   *\n   * @param {?object} nestedChildNodes Nested child maps.\n   * @return {?object} A set of child instances.\n   * @internal\n   */\n  instantiateChildren: function (nestedChildNodes, transaction, context, selfDebugID // 0 in production and for roots\n  ) {\n    if (nestedChildNodes == null) {\n      return null;\n    }\n    var childInstances = {};\n\n    if (process.env.NODE_ENV !== 'production') {\n      traverseAllChildren(nestedChildNodes, function (childInsts, child, name) {\n        return instantiateChild(childInsts, child, name, selfDebugID);\n      }, childInstances);\n    } else {\n      traverseAllChildren(nestedChildNodes, instantiateChild, childInstances);\n    }\n    return childInstances;\n  },\n\n  /**\n   * Updates the rendered children and returns a new set of children.\n   *\n   * @param {?object} prevChildren Previously initialized set of children.\n   * @param {?object} nextChildren Flat child element maps.\n   * @param {ReactReconcileTransaction} transaction\n   * @param {object} context\n   * @return {?object} A new set of child instances.\n   * @internal\n   */\n  updateChildren: function (prevChildren, nextChildren, mountImages, removedNodes, transaction, hostParent, hostContainerInfo, context, selfDebugID // 0 in production and for roots\n  ) {\n    // We currently don't have a way to track moves here but if we use iterators\n    // instead of for..in we can zip the iterators and check if an item has\n    // moved.\n    // TODO: If nothing has changed, return the prevChildren object so that we\n    // can quickly bailout if nothing has changed.\n    if (!nextChildren && !prevChildren) {\n      return;\n    }\n    var name;\n    var prevChild;\n    for (name in nextChildren) {\n      if (!nextChildren.hasOwnProperty(name)) {\n        continue;\n      }\n      prevChild = prevChildren && prevChildren[name];\n      var prevElement = prevChild && prevChild._currentElement;\n      var nextElement = nextChildren[name];\n      if (prevChild != null && shouldUpdateReactComponent(prevElement, nextElement)) {\n        ReactReconciler.receiveComponent(prevChild, nextElement, transaction, context);\n        nextChildren[name] = prevChild;\n      } else {\n        if (prevChild) {\n          removedNodes[name] = ReactReconciler.getHostNode(prevChild);\n          ReactReconciler.unmountComponent(prevChild, false);\n        }\n        // The child must be instantiated before it's mounted.\n        var nextChildInstance = instantiateReactComponent(nextElement, true);\n        nextChildren[name] = nextChildInstance;\n        // Creating mount image now ensures refs are resolved in right order\n        // (see https://github.com/facebook/react/pull/7101 for explanation).\n        var nextChildMountImage = ReactReconciler.mountComponent(nextChildInstance, transaction, hostParent, hostContainerInfo, context, selfDebugID);\n        mountImages.push(nextChildMountImage);\n      }\n    }\n    // Unmount children that are no longer present.\n    for (name in prevChildren) {\n      if (prevChildren.hasOwnProperty(name) && !(nextChildren && nextChildren.hasOwnProperty(name))) {\n        prevChild = prevChildren[name];\n        removedNodes[name] = ReactReconciler.getHostNode(prevChild);\n        ReactReconciler.unmountComponent(prevChild, false);\n      }\n    }\n  },\n\n  /**\n   * Unmounts all rendered children. This should be used to clean up children\n   * when this component is unmounted.\n   *\n   * @param {?object} renderedChildren Previously initialized set of children.\n   * @internal\n   */\n  unmountChildren: function (renderedChildren, safely) {\n    for (var name in renderedChildren) {\n      if (renderedChildren.hasOwnProperty(name)) {\n        var renderedChild = renderedChildren[name];\n        ReactReconciler.unmountComponent(renderedChild, safely);\n      }\n    }\n  }\n\n};\n\nmodule.exports = ReactChildReconciler;\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/react-dom/lib/ReactChildReconciler.js\n// module id = 290\n// module chunks = 0"],"mappings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sourceRoot":""}");

TODO found
Open

    eval("/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n'use strict';\n\nvar _prodInvariant = __webpack_require__(208),\n    _assign = __webpack_require__(176);\n\nvar React = __webpack_require__(175);\nvar ReactComponentEnvironment = __webpack_require__(288);\nvar ReactCurrentOwner = __webpack_require__(182);\nvar ReactErrorUtils = __webpack_require__(218);\nvar ReactInstanceMap = __webpack_require__(289);\nvar ReactInstrumentation = __webpack_require__(235);\nvar ReactNodeTypes = __webpack_require__(293);\nvar ReactReconciler = __webpack_require__(232);\n\nif (true) {\n  var checkReactTypeSpec = __webpack_require__(294);\n}\n\nvar emptyObject = __webpack_require__(192);\nvar invariant = __webpack_require__(180);\nvar shallowEqual = __webpack_require__(296);\nvar shouldUpdateReactComponent = __webpack_require__(297);\nvar warning = __webpack_require__(183);\n\nvar CompositeTypes = {\n  ImpureClass: 0,\n  PureClass: 1,\n  StatelessFunctional: 2\n};\n\nfunction StatelessComponent(Component) {}\nStatelessComponent.prototype.render = function () {\n  var Component = ReactInstanceMap.get(this)._currentElement.type;\n  var element = Component(this.props, this.context, this.updater);\n  warnIfInvalidElement(Component, element);\n  return element;\n};\n\nfunction warnIfInvalidElement(Component, element) {\n  if (true) {\n     true ? warning(element === null || element === false || React.isValidElement(element), '%s(...): A valid React element (or null) must be returned. You may have ' + 'returned undefined, an array or some other invalid object.', Component.displayName || Component.name || 'Component') : void 0;\n     true ? warning(!Component.childContextTypes, '%s(...): childContextTypes cannot be defined on a functional component.', Component.displayName || Component.name || 'Component') : void 0;\n  }\n}\n\nfunction shouldConstruct(Component) {\n  return !!(Component.prototype && Component.prototype.isReactComponent);\n}\n\nfunction isPureComponent(Component) {\n  return !!(Component.prototype && Component.prototype.isPureReactComponent);\n}\n\n// Separated into a function to contain deoptimizations caused by try/finally.\nfunction measureLifeCyclePerf(fn, debugID, timerType) {\n  if (debugID === 0) {\n    // Top-level wrappers (see ReactMount) and empty components (see\n    // ReactDOMEmptyComponent) are invisible to hooks and devtools.\n    // Both are implementation details that should go away in the future.\n    return fn();\n  }\n\n  ReactInstrumentation.debugTool.onBeginLifeCycleTimer(debugID, timerType);\n  try {\n    return fn();\n  } finally {\n    ReactInstrumentation.debugTool.onEndLifeCycleTimer(debugID, timerType);\n  }\n}\n\n/**\n * ------------------ The Life-Cycle of a Composite Component ------------------\n *\n * - constructor: Initialization of state. The instance is now retained.\n *   - componentWillMount\n *   - render\n *   - [children's constructors]\n *     - [children's componentWillMount and render]\n *     - [children's componentDidMount]\n *     - componentDidMount\n *\n *       Update Phases:\n *       - componentWillReceiveProps (only called if parent updated)\n *       - shouldComponentUpdate\n *         - componentWillUpdate\n *           - render\n *           - [children's constructors or receive props phases]\n *         - componentDidUpdate\n *\n *     - componentWillUnmount\n *     - [children's componentWillUnmount]\n *   - [children destroyed]\n * - (destroyed): The instance is now blank, released by React and ready for GC.\n *\n * -----------------------------------------------------------------------------\n */\n\n/**\n * An incrementing ID assigned to each component when it is mounted. This is\n * used to enforce the order in which `ReactUpdates` updates dirty components.\n *\n * @private\n */\nvar nextMountID = 1;\n\n/**\n * @lends {ReactCompositeComponent.prototype}\n */\nvar ReactCompositeComponent = {\n\n  /**\n   * Base constructor for all composite component.\n   *\n   * @param {ReactElement} element\n   * @final\n   * @internal\n   */\n  construct: function (element) {\n    this._currentElement = element;\n    this._rootNodeID = 0;\n    this._compositeType = null;\n    this._instance = null;\n    this._hostParent = null;\n    this._hostContainerInfo = null;\n\n    // See ReactUpdateQueue\n    this._updateBatchNumber = null;\n    this._pendingElement = null;\n    this._pendingStateQueue = null;\n    this._pendingReplaceState = false;\n    this._pendingForceUpdate = false;\n\n    this._renderedNodeType = null;\n    this._renderedComponent = null;\n    this._context = null;\n    this._mountOrder = 0;\n    this._topLevelWrapper = null;\n\n    // See ReactUpdates and ReactUpdateQueue.\n    this._pendingCallbacks = null;\n\n    // ComponentWillUnmount shall only be called once\n    this._calledComponentWillUnmount = false;\n\n    if (true) {\n      this._warnedAboutRefsInRender = false;\n    }\n  },\n\n  /**\n   * Initializes the component, renders markup, and registers event listeners.\n   *\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {?object} hostParent\n   * @param {?object} hostContainerInfo\n   * @param {?object} context\n   * @return {?string} Rendered markup to be inserted into the DOM.\n   * @final\n   * @internal\n   */\n  mountComponent: function (transaction, hostParent, hostContainerInfo, context) {\n    var _this = this;\n\n    this._context = context;\n    this._mountOrder = nextMountID++;\n    this._hostParent = hostParent;\n    this._hostContainerInfo = hostContainerInfo;\n\n    var publicProps = this._currentElement.props;\n    var publicContext = this._processContext(context);\n\n    var Component = this._currentElement.type;\n\n    var updateQueue = transaction.getUpdateQueue();\n\n    // Initialize the public class\n    var doConstruct = shouldConstruct(Component);\n    var inst = this._constructComponent(doConstruct, publicProps, publicContext, updateQueue);\n    var renderedElement;\n\n    // Support functional components\n    if (!doConstruct && (inst == null || inst.render == null)) {\n      renderedElement = inst;\n      warnIfInvalidElement(Component, renderedElement);\n      !(inst === null || inst === false || React.isValidElement(inst)) ?  true ? invariant(false, '%s(...): A valid React element (or null) must be returned. You may have returned undefined, an array or some other invalid object.', Component.displayName || Component.name || 'Component') : _prodInvariant('105', Component.displayName || Component.name || 'Component') : void 0;\n      inst = new StatelessComponent(Component);\n      this._compositeType = CompositeTypes.StatelessFunctional;\n    } else {\n      if (isPureComponent(Component)) {\n        this._compositeType = CompositeTypes.PureClass;\n      } else {\n        this._compositeType = CompositeTypes.ImpureClass;\n      }\n    }\n\n    if (true) {\n      // This will throw later in _renderValidatedComponent, but add an early\n      // warning now to help debugging\n      if (inst.render == null) {\n         true ? warning(false, '%s(...): No `render` method found on the returned component ' + 'instance: you may have forgotten to define `render`.', Component.displayName || Component.name || 'Component') : void 0;\n      }\n\n      var propsMutated = inst.props !== publicProps;\n      var componentName = Component.displayName || Component.name || 'Component';\n\n       true ? warning(inst.props === undefined || !propsMutated, '%s(...): When calling super() in `%s`, make sure to pass ' + 'up the same props that your component\\'s constructor was passed.', componentName, componentName) : void 0;\n    }\n\n    // These should be set up in the constructor, but as a convenience for\n    // simpler class abstractions, we set them up after the fact.\n    inst.props = publicProps;\n    inst.context = publicContext;\n    inst.refs = emptyObject;\n    inst.updater = updateQueue;\n\n    this._instance = inst;\n\n    // Store a reference from the instance back to the internal representation\n    ReactInstanceMap.set(inst, this);\n\n    if (true) {\n      // Since plain JS classes are defined without any special initialization\n      // logic, we can not catch common errors early. Therefore, we have to\n      // catch them here, at initialization time, instead.\n       true ? warning(!inst.getInitialState || inst.getInitialState.isReactClassApproved || inst.state, 'getInitialState was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Did you mean to define a state property instead?', this.getName() || 'a component') : void 0;\n       true ? warning(!inst.getDefaultProps || inst.getDefaultProps.isReactClassApproved, 'getDefaultProps was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Use a static property to define defaultProps instead.', this.getName() || 'a component') : void 0;\n       true ? warning(!inst.propTypes, 'propTypes was defined as an instance property on %s. Use a static ' + 'property to define propTypes instead.', this.getName() || 'a component') : void 0;\n       true ? warning(!inst.contextTypes, 'contextTypes was defined as an instance property on %s. Use a ' + 'static property to define contextTypes instead.', this.getName() || 'a component') : void 0;\n       true ? warning(typeof inst.componentShouldUpdate !== 'function', '%s 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.', this.getName() || 'A component') : void 0;\n       true ? warning(typeof inst.componentDidUnmount !== 'function', '%s has a method called ' + 'componentDidUnmount(). But there is no such lifecycle method. ' + 'Did you mean componentWillUnmount()?', this.getName() || 'A component') : void 0;\n       true ? warning(typeof inst.componentWillRecieveProps !== 'function', '%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', this.getName() || 'A component') : void 0;\n    }\n\n    var initialState = inst.state;\n    if (initialState === undefined) {\n      inst.state = initialState = null;\n    }\n    !(typeof initialState === 'object' && !Array.isArray(initialState)) ?  true ? invariant(false, '%s.state: must be set to an object or null', this.getName() || 'ReactCompositeComponent') : _prodInvariant('106', this.getName() || 'ReactCompositeComponent') : void 0;\n\n    this._pendingStateQueue = null;\n    this._pendingReplaceState = false;\n    this._pendingForceUpdate = false;\n\n    var markup;\n    if (inst.unstable_handleError) {\n      markup = this.performInitialMountWithErrorHandling(renderedElement, hostParent, hostContainerInfo, transaction, context);\n    } else {\n      markup = this.performInitialMount(renderedElement, hostParent, hostContainerInfo, transaction, context);\n    }\n\n    if (inst.componentDidMount) {\n      if (true) {\n        transaction.getReactMountReady().enqueue(function () {\n          measureLifeCyclePerf(function () {\n            return inst.componentDidMount();\n          }, _this._debugID, 'componentDidMount');\n        });\n      } else {\n        transaction.getReactMountReady().enqueue(inst.componentDidMount, inst);\n      }\n    }\n\n    return markup;\n  },\n\n  _constructComponent: function (doConstruct, publicProps, publicContext, updateQueue) {\n    if (true) {\n      ReactCurrentOwner.current = this;\n      try {\n        return this._constructComponentWithoutOwner(doConstruct, publicProps, publicContext, updateQueue);\n      } finally {\n        ReactCurrentOwner.current = null;\n      }\n    } else {\n      return this._constructComponentWithoutOwner(doConstruct, publicProps, publicContext, updateQueue);\n    }\n  },\n\n  _constructComponentWithoutOwner: function (doConstruct, publicProps, publicContext, updateQueue) {\n    var Component = this._currentElement.type;\n\n    if (doConstruct) {\n      if (true) {\n        return measureLifeCyclePerf(function () {\n          return new Component(publicProps, publicContext, updateQueue);\n        }, this._debugID, 'ctor');\n      } else {\n        return new Component(publicProps, publicContext, updateQueue);\n      }\n    }\n\n    // This can still be an instance in case of factory components\n    // but we'll count this as time spent rendering as the more common case.\n    if (true) {\n      return measureLifeCyclePerf(function () {\n        return Component(publicProps, publicContext, updateQueue);\n      }, this._debugID, 'render');\n    } else {\n      return Component(publicProps, publicContext, updateQueue);\n    }\n  },\n\n  performInitialMountWithErrorHandling: function (renderedElement, hostParent, hostContainerInfo, transaction, context) {\n    var markup;\n    var checkpoint = transaction.checkpoint();\n    try {\n      markup = this.performInitialMount(renderedElement, hostParent, hostContainerInfo, transaction, context);\n    } catch (e) {\n      // Roll back to checkpoint, handle error (which may add items to the transaction), and take a new checkpoint\n      transaction.rollback(checkpoint);\n      this._instance.unstable_handleError(e);\n      if (this._pendingStateQueue) {\n        this._instance.state = this._processPendingState(this._instance.props, this._instance.context);\n      }\n      checkpoint = transaction.checkpoint();\n\n      this._renderedComponent.unmountComponent(true);\n      transaction.rollback(checkpoint);\n\n      // Try again - we've informed the component about the error, so they can render an error message this time.\n      // If this throws again, the error will bubble up (and can be caught by a higher error boundary).\n      markup = this.performInitialMount(renderedElement, hostParent, hostContainerInfo, transaction, context);\n    }\n    return markup;\n  },\n\n  performInitialMount: function (renderedElement, hostParent, hostContainerInfo, transaction, context) {\n    var inst = this._instance;\n\n    var debugID = 0;\n    if (true) {\n      debugID = this._debugID;\n    }\n\n    if (inst.componentWillMount) {\n      if (true) {\n        measureLifeCyclePerf(function () {\n          return inst.componentWillMount();\n        }, debugID, 'componentWillMount');\n      } else {\n        inst.componentWillMount();\n      }\n      // When mounting, calls to `setState` by `componentWillMount` will set\n      // `this._pendingStateQueue` without triggering a re-render.\n      if (this._pendingStateQueue) {\n        inst.state = this._processPendingState(inst.props, inst.context);\n      }\n    }\n\n    // If not a stateless component, we now render\n    if (renderedElement === undefined) {\n      renderedElement = this._renderValidatedComponent();\n    }\n\n    var nodeType = ReactNodeTypes.getType(renderedElement);\n    this._renderedNodeType = nodeType;\n    var child = this._instantiateReactComponent(renderedElement, nodeType !== ReactNodeTypes.EMPTY /* shouldHaveDebugID */\n    );\n    this._renderedComponent = child;\n\n    var markup = ReactReconciler.mountComponent(child, transaction, hostParent, hostContainerInfo, this._processChildContext(context), debugID);\n\n    if (true) {\n      if (debugID !== 0) {\n        var childDebugIDs = child._debugID !== 0 ? [child._debugID] : [];\n        ReactInstrumentation.debugTool.onSetChildren(debugID, childDebugIDs);\n      }\n    }\n\n    return markup;\n  },\n\n  getHostNode: function () {\n    return ReactReconciler.getHostNode(this._renderedComponent);\n  },\n\n  /**\n   * Releases any resources allocated by `mountComponent`.\n   *\n   * @final\n   * @internal\n   */\n  unmountComponent: function (safely) {\n    if (!this._renderedComponent) {\n      return;\n    }\n\n    var inst = this._instance;\n\n    if (inst.componentWillUnmount && !inst._calledComponentWillUnmount) {\n      inst._calledComponentWillUnmount = true;\n\n      if (safely) {\n        var name = this.getName() + '.componentWillUnmount()';\n        ReactErrorUtils.invokeGuardedCallback(name, inst.componentWillUnmount.bind(inst));\n      } else {\n        if (true) {\n          measureLifeCyclePerf(function () {\n            return inst.componentWillUnmount();\n          }, this._debugID, 'componentWillUnmount');\n        } else {\n          inst.componentWillUnmount();\n        }\n      }\n    }\n\n    if (this._renderedComponent) {\n      ReactReconciler.unmountComponent(this._renderedComponent, safely);\n      this._renderedNodeType = null;\n      this._renderedComponent = null;\n      this._instance = null;\n    }\n\n    // Reset pending fields\n    // Even if this component is scheduled for another update in ReactUpdates,\n    // it would still be ignored because these fields are reset.\n    this._pendingStateQueue = null;\n    this._pendingReplaceState = false;\n    this._pendingForceUpdate = false;\n    this._pendingCallbacks = null;\n    this._pendingElement = null;\n\n    // These fields do not really need to be reset since this object is no\n    // longer accessible.\n    this._context = null;\n    this._rootNodeID = 0;\n    this._topLevelWrapper = null;\n\n    // Delete the reference from the instance to this internal representation\n    // which allow the internals to be properly cleaned up even if the user\n    // leaks a reference to the public instance.\n    ReactInstanceMap.remove(inst);\n\n    // Some existing components rely on inst.props even after they've been\n    // destroyed (in event handlers).\n    // TODO: inst.props = null;\n    // TODO: inst.state = null;\n    // TODO: inst.context = null;\n  },\n\n  /**\n   * Filters the context object to only contain keys specified in\n   * `contextTypes`\n   *\n   * @param {object} context\n   * @return {?object}\n   * @private\n   */\n  _maskContext: function (context) {\n    var Component = this._currentElement.type;\n    var contextTypes = Component.contextTypes;\n    if (!contextTypes) {\n      return emptyObject;\n    }\n    var maskedContext = {};\n    for (var contextName in contextTypes) {\n      maskedContext[contextName] = context[contextName];\n    }\n    return maskedContext;\n  },\n\n  /**\n   * Filters the context object to only contain keys specified in\n   * `contextTypes`, and asserts that they are valid.\n   *\n   * @param {object} context\n   * @return {?object}\n   * @private\n   */\n  _processContext: function (context) {\n    var maskedContext = this._maskContext(context);\n    if (true) {\n      var Component = this._currentElement.type;\n      if (Component.contextTypes) {\n        this._checkContextTypes(Component.contextTypes, maskedContext, 'context');\n      }\n    }\n    return maskedContext;\n  },\n\n  /**\n   * @param {object} currentContext\n   * @return {object}\n   * @private\n   */\n  _processChildContext: function (currentContext) {\n    var Component = this._currentElement.type;\n    var inst = this._instance;\n    var childContext;\n\n    if (inst.getChildContext) {\n      if (true) {\n        ReactInstrumentation.debugTool.onBeginProcessingChildContext();\n        try {\n          childContext = inst.getChildContext();\n        } finally {\n          ReactInstrumentation.debugTool.onEndProcessingChildContext();\n        }\n      } else {\n        childContext = inst.getChildContext();\n      }\n    }\n\n    if (childContext) {\n      !(typeof Component.childContextTypes === 'object') ?  true ? invariant(false, '%s.getChildContext(): childContextTypes must be defined in order to use getChildContext().', this.getName() || 'ReactCompositeComponent') : _prodInvariant('107', this.getName() || 'ReactCompositeComponent') : void 0;\n      if (true) {\n        this._checkContextTypes(Component.childContextTypes, childContext, 'childContext');\n      }\n      for (var name in childContext) {\n        !(name in Component.childContextTypes) ?  true ? invariant(false, '%s.getChildContext(): key \"%s\" is not defined in childContextTypes.', this.getName() || 'ReactCompositeComponent', name) : _prodInvariant('108', this.getName() || 'ReactCompositeComponent', name) : void 0;\n      }\n      return _assign({}, currentContext, childContext);\n    }\n    return currentContext;\n  },\n\n  /**\n   * Assert that the context types are valid\n   *\n   * @param {object} typeSpecs Map of context field to a ReactPropType\n   * @param {object} values Runtime values that need to be type-checked\n   * @param {string} location e.g. \"prop\", \"context\", \"child context\"\n   * @private\n   */\n  _checkContextTypes: function (typeSpecs, values, location) {\n    if (true) {\n      checkReactTypeSpec(typeSpecs, values, location, this.getName(), null, this._debugID);\n    }\n  },\n\n  receiveComponent: function (nextElement, transaction, nextContext) {\n    var prevElement = this._currentElement;\n    var prevContext = this._context;\n\n    this._pendingElement = null;\n\n    this.updateComponent(transaction, prevElement, nextElement, prevContext, nextContext);\n  },\n\n  /**\n   * If any of `_pendingElement`, `_pendingStateQueue`, or `_pendingForceUpdate`\n   * is set, update the component.\n   *\n   * @param {ReactReconcileTransaction} transaction\n   * @internal\n   */\n  performUpdateIfNecessary: function (transaction) {\n    if (this._pendingElement != null) {\n      ReactReconciler.receiveComponent(this, this._pendingElement, transaction, this._context);\n    } else if (this._pendingStateQueue !== null || this._pendingForceUpdate) {\n      this.updateComponent(transaction, this._currentElement, this._currentElement, this._context, this._context);\n    } else {\n      this._updateBatchNumber = null;\n    }\n  },\n\n  /**\n   * Perform an update to a mounted component. The componentWillReceiveProps and\n   * shouldComponentUpdate methods are called, then (assuming the update isn't\n   * skipped) the remaining update lifecycle methods are called and the DOM\n   * representation is updated.\n   *\n   * By default, this implements React's rendering and reconciliation algorithm.\n   * Sophisticated clients may wish to override this.\n   *\n   * @param {ReactReconcileTransaction} transaction\n   * @param {ReactElement} prevParentElement\n   * @param {ReactElement} nextParentElement\n   * @internal\n   * @overridable\n   */\n  updateComponent: function (transaction, prevParentElement, nextParentElement, prevUnmaskedContext, nextUnmaskedContext) {\n    var inst = this._instance;\n    !(inst != null) ?  true ? invariant(false, 'Attempted to update component `%s` that has already been unmounted (or failed to mount).', this.getName() || 'ReactCompositeComponent') : _prodInvariant('136', this.getName() || 'ReactCompositeComponent') : void 0;\n\n    var willReceive = false;\n    var nextContext;\n\n    // Determine if the context has changed or not\n    if (this._context === nextUnmaskedContext) {\n      nextContext = inst.context;\n    } else {\n      nextContext = this._processContext(nextUnmaskedContext);\n      willReceive = true;\n    }\n\n    var prevProps = prevParentElement.props;\n    var nextProps = nextParentElement.props;\n\n    // Not a simple state update but a props update\n    if (prevParentElement !== nextParentElement) {\n      willReceive = true;\n    }\n\n    // An update here will schedule an update but immediately set\n    // _pendingStateQueue which will ensure that any state updates gets\n    // immediately reconciled instead of waiting for the next batch.\n    if (willReceive && inst.componentWillReceiveProps) {\n      if (true) {\n        measureLifeCyclePerf(function () {\n          return inst.componentWillReceiveProps(nextProps, nextContext);\n        }, this._debugID, 'componentWillReceiveProps');\n      } else {\n        inst.componentWillReceiveProps(nextProps, nextContext);\n      }\n    }\n\n    var nextState = this._processPendingState(nextProps, nextContext);\n    var shouldUpdate = true;\n\n    if (!this._pendingForceUpdate) {\n      if (inst.shouldComponentUpdate) {\n        if (true) {\n          shouldUpdate = measureLifeCyclePerf(function () {\n            return inst.shouldComponentUpdate(nextProps, nextState, nextContext);\n          }, this._debugID, 'shouldComponentUpdate');\n        } else {\n          shouldUpdate = inst.shouldComponentUpdate(nextProps, nextState, nextContext);\n        }\n      } else {\n        if (this._compositeType === CompositeTypes.PureClass) {\n          shouldUpdate = !shallowEqual(prevProps, nextProps) || !shallowEqual(inst.state, nextState);\n        }\n      }\n    }\n\n    if (true) {\n       true ? warning(shouldUpdate !== undefined, '%s.shouldComponentUpdate(): Returned undefined instead of a ' + 'boolean value. Make sure to return true or false.', this.getName() || 'ReactCompositeComponent') : void 0;\n    }\n\n    this._updateBatchNumber = null;\n    if (shouldUpdate) {\n      this._pendingForceUpdate = false;\n      // Will set `this.props`, `this.state` and `this.context`.\n      this._performComponentUpdate(nextParentElement, nextProps, nextState, nextContext, transaction, nextUnmaskedContext);\n    } else {\n      // If it's determined that a component should not update, we still want\n      // to set props and state but we shortcut the rest of the update.\n      this._currentElement = nextParentElement;\n      this._context = nextUnmaskedContext;\n      inst.props = nextProps;\n      inst.state = nextState;\n      inst.context = nextContext;\n    }\n  },\n\n  _processPendingState: function (props, context) {\n    var inst = this._instance;\n    var queue = this._pendingStateQueue;\n    var replace = this._pendingReplaceState;\n    this._pendingReplaceState = false;\n    this._pendingStateQueue = null;\n\n    if (!queue) {\n      return inst.state;\n    }\n\n    if (replace && queue.length === 1) {\n      return queue[0];\n    }\n\n    var nextState = _assign({}, replace ? queue[0] : inst.state);\n    for (var i = replace ? 1 : 0; i < queue.length; i++) {\n      var partial = queue[i];\n      _assign(nextState, typeof partial === 'function' ? partial.call(inst, nextState, props, context) : partial);\n    }\n\n    return nextState;\n  },\n\n  /**\n   * Merges new props and state, notifies delegate methods of update and\n   * performs update.\n   *\n   * @param {ReactElement} nextElement Next element\n   * @param {object} nextProps Next public object to set as properties.\n   * @param {?object} nextState Next object to set as state.\n   * @param {?object} nextContext Next public object to set as context.\n   * @param {ReactReconcileTransaction} transaction\n   * @param {?object} unmaskedContext\n   * @private\n   */\n  _performComponentUpdate: function (nextElement, nextProps, nextState, nextContext, transaction, unmaskedContext) {\n    var _this2 = this;\n\n    var inst = this._instance;\n\n    var hasComponentDidUpdate = Boolean(inst.componentDidUpdate);\n    var prevProps;\n    var prevState;\n    var prevContext;\n    if (hasComponentDidUpdate) {\n      prevProps = inst.props;\n      prevState = inst.state;\n      prevContext = inst.context;\n    }\n\n    if (inst.componentWillUpdate) {\n      if (true) {\n        measureLifeCyclePerf(function () {\n          return inst.componentWillUpdate(nextProps, nextState, nextContext);\n        }, this._debugID, 'componentWillUpdate');\n      } else {\n        inst.componentWillUpdate(nextProps, nextState, nextContext);\n      }\n    }\n\n    this._currentElement = nextElement;\n    this._context = unmaskedContext;\n    inst.props = nextProps;\n    inst.state = nextState;\n    inst.context = nextContext;\n\n    this._updateRenderedComponent(transaction, unmaskedContext);\n\n    if (hasComponentDidUpdate) {\n      if (true) {\n        transaction.getReactMountReady().enqueue(function () {\n          measureLifeCyclePerf(inst.componentDidUpdate.bind(inst, prevProps, prevState, prevContext), _this2._debugID, 'componentDidUpdate');\n        });\n      } else {\n        transaction.getReactMountReady().enqueue(inst.componentDidUpdate.bind(inst, prevProps, prevState, prevContext), inst);\n      }\n    }\n  },\n\n  /**\n   * Call the component's `render` method and update the DOM accordingly.\n   *\n   * @param {ReactReconcileTransaction} transaction\n   * @internal\n   */\n  _updateRenderedComponent: function (transaction, context) {\n    var prevComponentInstance = this._renderedComponent;\n    var prevRenderedElement = prevComponentInstance._currentElement;\n    var nextRenderedElement = this._renderValidatedComponent();\n\n    var debugID = 0;\n    if (true) {\n      debugID = this._debugID;\n    }\n\n    if (shouldUpdateReactComponent(prevRenderedElement, nextRenderedElement)) {\n      ReactReconciler.receiveComponent(prevComponentInstance, nextRenderedElement, transaction, this._processChildContext(context));\n    } else {\n      var oldHostNode = ReactReconciler.getHostNode(prevComponentInstance);\n      ReactReconciler.unmountComponent(prevComponentInstance, false);\n\n      var nodeType = ReactNodeTypes.getType(nextRenderedElement);\n      this._renderedNodeType = nodeType;\n      var child = this._instantiateReactComponent(nextRenderedElement, nodeType !== ReactNodeTypes.EMPTY /* shouldHaveDebugID */\n      );\n      this._renderedComponent = child;\n\n      var nextMarkup = ReactReconciler.mountComponent(child, transaction, this._hostParent, this._hostContainerInfo, this._processChildContext(context), debugID);\n\n      if (true) {\n        if (debugID !== 0) {\n          var childDebugIDs = child._debugID !== 0 ? [child._debugID] : [];\n          ReactInstrumentation.debugTool.onSetChildren(debugID, childDebugIDs);\n        }\n      }\n\n      this._replaceNodeWithMarkup(oldHostNode, nextMarkup, prevComponentInstance);\n    }\n  },\n\n  /**\n   * Overridden in shallow rendering.\n   *\n   * @protected\n   */\n  _replaceNodeWithMarkup: function (oldHostNode, nextMarkup, prevInstance) {\n    ReactComponentEnvironment.replaceNodeWithMarkup(oldHostNode, nextMarkup, prevInstance);\n  },\n\n  /**\n   * @protected\n   */\n  _renderValidatedComponentWithoutOwnerOrContext: function () {\n    var inst = this._instance;\n    var renderedElement;\n\n    if (true) {\n      renderedElement = measureLifeCyclePerf(function () {\n        return inst.render();\n      }, this._debugID, 'render');\n    } else {\n      renderedElement = inst.render();\n    }\n\n    if (true) {\n      // We allow auto-mocks to proceed as if they're returning null.\n      if (renderedElement === undefined && inst.render._isMockFunction) {\n        // This is probably bad practice. Consider warning here and\n        // deprecating this convenience.\n        renderedElement = null;\n      }\n    }\n\n    return renderedElement;\n  },\n\n  /**\n   * @private\n   */\n  _renderValidatedComponent: function () {\n    var renderedElement;\n    if (true) {\n      ReactCurrentOwner.current = this;\n      try {\n        renderedElement = this._renderValidatedComponentWithoutOwnerOrContext();\n      } finally {\n        ReactCurrentOwner.current = null;\n      }\n    } else {\n      renderedElement = this._renderValidatedComponentWithoutOwnerOrContext();\n    }\n    !(\n    // TODO: An `isValidNode` function would probably be more appropriate\n    renderedElement === null || renderedElement === false || React.isValidElement(renderedElement)) ?  true ? invariant(false, '%s.render(): A valid React element (or null) must be returned. You may have returned undefined, an array or some other invalid object.', this.getName() || 'ReactCompositeComponent') : _prodInvariant('109', this.getName() || 'ReactCompositeComponent') : void 0;\n\n    return renderedElement;\n  },\n\n  /**\n   * Lazily allocates the refs object and stores `component` as `ref`.\n   *\n   * @param {string} ref Reference name.\n   * @param {component} component Component to store as `ref`.\n   * @final\n   * @private\n   */\n  attachRef: function (ref, component) {\n    var inst = this.getPublicInstance();\n    !(inst != null) ?  true ? invariant(false, 'Stateless function components cannot have refs.') : _prodInvariant('110') : void 0;\n    var publicComponentInstance = component.getPublicInstance();\n    if (true) {\n      var componentName = component && component.getName ? component.getName() : 'a component';\n       true ? warning(publicComponentInstance != null || component._compositeType !== CompositeTypes.StatelessFunctional, 'Stateless function components cannot be given refs ' + '(See ref \"%s\" in %s created by %s). ' + 'Attempts to access this ref will fail.', ref, componentName, this.getName()) : void 0;\n    }\n    var refs = inst.refs === emptyObject ? inst.refs = {} : inst.refs;\n    refs[ref] = publicComponentInstance;\n  },\n\n  /**\n   * Detaches a reference name.\n   *\n   * @param {string} ref Name to dereference.\n   * @final\n   * @private\n   */\n  detachRef: function (ref) {\n    var refs = this.getPublicInstance().refs;\n    delete refs[ref];\n  },\n\n  /**\n   * Get a text description of the component that can be used to identify it\n   * in error messages.\n   * @return {string} The name or null.\n   * @internal\n   */\n  getName: function () {\n    var type = this._currentElement.type;\n    var constructor = this._instance && this._instance.constructor;\n    return type.displayName || constructor && constructor.displayName || type.name || constructor && constructor.name || null;\n  },\n\n  /**\n   * Get the publicly accessible representation of this component - i.e. what\n   * is exposed by refs and returned by render. Can be null for stateless\n   * components.\n   *\n   * @return {ReactComponent} the public component instance.\n   * @internal\n   */\n  getPublicInstance: function () {\n    var inst = this._instance;\n    if (this._compositeType === CompositeTypes.StatelessFunctional) {\n      return null;\n    }\n    return inst;\n  },\n\n  // Stub\n  _instantiateReactComponent: null\n\n};\n\nmodule.exports = ReactCompositeComponent;//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"292.js","sources":["/home/ubuntu/workspace/node_modules/react-dom/lib/ReactCompositeComponent.js"],"sourcesContent":["/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n'use strict';\n\nvar _prodInvariant = require('./reactProdInvariant'),\n    _assign = require('object-assign');\n\nvar React = require('react/lib/React');\nvar ReactComponentEnvironment = require('./ReactComponentEnvironment');\nvar ReactCurrentOwner = require('react/lib/ReactCurrentOwner');\nvar ReactErrorUtils = require('./ReactErrorUtils');\nvar ReactInstanceMap = require('./ReactInstanceMap');\nvar ReactInstrumentation = require('./ReactInstrumentation');\nvar ReactNodeTypes = require('./ReactNodeTypes');\nvar ReactReconciler = require('./ReactReconciler');\n\nif (process.env.NODE_ENV !== 'production') {\n  var checkReactTypeSpec = require('./checkReactTypeSpec');\n}\n\nvar emptyObject = require('fbjs/lib/emptyObject');\nvar invariant = require('fbjs/lib/invariant');\nvar shallowEqual = require('fbjs/lib/shallowEqual');\nvar shouldUpdateReactComponent = require('./shouldUpdateReactComponent');\nvar warning = require('fbjs/lib/warning');\n\nvar CompositeTypes = {\n  ImpureClass: 0,\n  PureClass: 1,\n  StatelessFunctional: 2\n};\n\nfunction StatelessComponent(Component) {}\nStatelessComponent.prototype.render = function () {\n  var Component = ReactInstanceMap.get(this)._currentElement.type;\n  var element = Component(this.props, this.context, this.updater);\n  warnIfInvalidElement(Component, element);\n  return element;\n};\n\nfunction warnIfInvalidElement(Component, element) {\n  if (process.env.NODE_ENV !== 'production') {\n    process.env.NODE_ENV !== 'production' ? warning(element === null || element === false || React.isValidElement(element), '%s(...): A valid React element (or null) must be returned. You may have ' + 'returned undefined, an array or some other invalid object.', Component.displayName || Component.name || 'Component') : void 0;\n    process.env.NODE_ENV !== 'production' ? warning(!Component.childContextTypes, '%s(...): childContextTypes cannot be defined on a functional component.', Component.displayName || Component.name || 'Component') : void 0;\n  }\n}\n\nfunction shouldConstruct(Component) {\n  return !!(Component.prototype && Component.prototype.isReactComponent);\n}\n\nfunction isPureComponent(Component) {\n  return !!(Component.prototype && Component.prototype.isPureReactComponent);\n}\n\n// Separated into a function to contain deoptimizations caused by try/finally.\nfunction measureLifeCyclePerf(fn, debugID, timerType) {\n  if (debugID === 0) {\n    // Top-level wrappers (see ReactMount) and empty components (see\n    // ReactDOMEmptyComponent) are invisible to hooks and devtools.\n    // Both are implementation details that should go away in the future.\n    return fn();\n  }\n\n  ReactInstrumentation.debugTool.onBeginLifeCycleTimer(debugID, timerType);\n  try {\n    return fn();\n  } finally {\n    ReactInstrumentation.debugTool.onEndLifeCycleTimer(debugID, timerType);\n  }\n}\n\n/**\n * ------------------ The Life-Cycle of a Composite Component ------------------\n *\n * - constructor: Initialization of state. The instance is now retained.\n *   - componentWillMount\n *   - render\n *   - [children's constructors]\n *     - [children's componentWillMount and render]\n *     - [children's componentDidMount]\n *     - componentDidMount\n *\n *       Update Phases:\n *       - componentWillReceiveProps (only called if parent updated)\n *       - shouldComponentUpdate\n *         - componentWillUpdate\n *           - render\n *           - [children's constructors or receive props phases]\n *         - componentDidUpdate\n *\n *     - componentWillUnmount\n *     - [children's componentWillUnmount]\n *   - [children destroyed]\n * - (destroyed): The instance is now blank, released by React and ready for GC.\n *\n * -----------------------------------------------------------------------------\n */\n\n/**\n * An incrementing ID assigned to each component when it is mounted. This is\n * used to enforce the order in which `ReactUpdates` updates dirty components.\n *\n * @private\n */\nvar nextMountID = 1;\n\n/**\n * @lends {ReactCompositeComponent.prototype}\n */\nvar ReactCompositeComponent = {\n\n  /**\n   * Base constructor for all composite component.\n   *\n   * @param {ReactElement} element\n   * @final\n   * @internal\n   */\n  construct: function (element) {\n    this._currentElement = element;\n    this._rootNodeID = 0;\n    this._compositeType = null;\n    this._instance = null;\n    this._hostParent = null;\n    this._hostContainerInfo = null;\n\n    // See ReactUpdateQueue\n    this._updateBatchNumber = null;\n    this._pendingElement = null;\n    this._pendingStateQueue = null;\n    this._pendingReplaceState = false;\n    this._pendingForceUpdate = false;\n\n    this._renderedNodeType = null;\n    this._renderedComponent = null;\n    this._context = null;\n    this._mountOrder = 0;\n    this._topLevelWrapper = null;\n\n    // See ReactUpdates and ReactUpdateQueue.\n    this._pendingCallbacks = null;\n\n    // ComponentWillUnmount shall only be called once\n    this._calledComponentWillUnmount = false;\n\n    if (process.env.NODE_ENV !== 'production') {\n      this._warnedAboutRefsInRender = false;\n    }\n  },\n\n  /**\n   * Initializes the component, renders markup, and registers event listeners.\n   *\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {?object} hostParent\n   * @param {?object} hostContainerInfo\n   * @param {?object} context\n   * @return {?string} Rendered markup to be inserted into the DOM.\n   * @final\n   * @internal\n   */\n  mountComponent: function (transaction, hostParent, hostContainerInfo, context) {\n    var _this = this;\n\n    this._context = context;\n    this._mountOrder = nextMountID++;\n    this._hostParent = hostParent;\n    this._hostContainerInfo = hostContainerInfo;\n\n    var publicProps = this._currentElement.props;\n    var publicContext = this._processContext(context);\n\n    var Component = this._currentElement.type;\n\n    var updateQueue = transaction.getUpdateQueue();\n\n    // Initialize the public class\n    var doConstruct = shouldConstruct(Component);\n    var inst = this._constructComponent(doConstruct, publicProps, publicContext, updateQueue);\n    var renderedElement;\n\n    // Support functional components\n    if (!doConstruct && (inst == null || inst.render == null)) {\n      renderedElement = inst;\n      warnIfInvalidElement(Component, renderedElement);\n      !(inst === null || inst === false || React.isValidElement(inst)) ? process.env.NODE_ENV !== 'production' ? invariant(false, '%s(...): A valid React element (or null) must be returned. You may have returned undefined, an array or some other invalid object.', Component.displayName || Component.name || 'Component') : _prodInvariant('105', Component.displayName || Component.name || 'Component') : void 0;\n      inst = new StatelessComponent(Component);\n      this._compositeType = CompositeTypes.StatelessFunctional;\n    } else {\n      if (isPureComponent(Component)) {\n        this._compositeType = CompositeTypes.PureClass;\n      } else {\n        this._compositeType = CompositeTypes.ImpureClass;\n      }\n    }\n\n    if (process.env.NODE_ENV !== 'production') {\n      // This will throw later in _renderValidatedComponent, but add an early\n      // warning now to help debugging\n      if (inst.render == null) {\n        process.env.NODE_ENV !== 'production' ? warning(false, '%s(...): No `render` method found on the returned component ' + 'instance: you may have forgotten to define `render`.', Component.displayName || Component.name || 'Component') : void 0;\n      }\n\n      var propsMutated = inst.props !== publicProps;\n      var componentName = Component.displayName || Component.name || 'Component';\n\n      process.env.NODE_ENV !== 'production' ? warning(inst.props === undefined || !propsMutated, '%s(...): When calling super() in `%s`, make sure to pass ' + 'up the same props that your component\\'s constructor was passed.', componentName, componentName) : void 0;\n    }\n\n    // These should be set up in the constructor, but as a convenience for\n    // simpler class abstractions, we set them up after the fact.\n    inst.props = publicProps;\n    inst.context = publicContext;\n    inst.refs = emptyObject;\n    inst.updater = updateQueue;\n\n    this._instance = inst;\n\n    // Store a reference from the instance back to the internal representation\n    ReactInstanceMap.set(inst, this);\n\n    if (process.env.NODE_ENV !== 'production') {\n      // Since plain JS classes are defined without any special initialization\n      // logic, we can not catch common errors early. Therefore, we have to\n      // catch them here, at initialization time, instead.\n      process.env.NODE_ENV !== 'production' ? warning(!inst.getInitialState || inst.getInitialState.isReactClassApproved || inst.state, 'getInitialState was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Did you mean to define a state property instead?', this.getName() || 'a component') : void 0;\n      process.env.NODE_ENV !== 'production' ? warning(!inst.getDefaultProps || inst.getDefaultProps.isReactClassApproved, 'getDefaultProps was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Use a static property to define defaultProps instead.', this.getName() || 'a component') : void 0;\n      process.env.NODE_ENV !== 'production' ? warning(!inst.propTypes, 'propTypes was defined as an instance property on %s. Use a static ' + 'property to define propTypes instead.', this.getName() || 'a component') : void 0;\n      process.env.NODE_ENV !== 'production' ? warning(!inst.contextTypes, 'contextTypes was defined as an instance property on %s. Use a ' + 'static property to define contextTypes instead.', this.getName() || 'a component') : void 0;\n      process.env.NODE_ENV !== 'production' ? warning(typeof inst.componentShouldUpdate !== 'function', '%s 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.', this.getName() || 'A component') : void 0;\n      process.env.NODE_ENV !== 'production' ? warning(typeof inst.componentDidUnmount !== 'function', '%s has a method called ' + 'componentDidUnmount(). But there is no such lifecycle method. ' + 'Did you mean componentWillUnmount()?', this.getName() || 'A component') : void 0;\n      process.env.NODE_ENV !== 'production' ? warning(typeof inst.componentWillRecieveProps !== 'function', '%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', this.getName() || 'A component') : void 0;\n    }\n\n    var initialState = inst.state;\n    if (initialState === undefined) {\n      inst.state = initialState = null;\n    }\n    !(typeof initialState === 'object' && !Array.isArray(initialState)) ? process.env.NODE_ENV !== 'production' ? invariant(false, '%s.state: must be set to an object or null', this.getName() || 'ReactCompositeComponent') : _prodInvariant('106', this.getName() || 'ReactCompositeComponent') : void 0;\n\n    this._pendingStateQueue = null;\n    this._pendingReplaceState = false;\n    this._pendingForceUpdate = false;\n\n    var markup;\n    if (inst.unstable_handleError) {\n      markup = this.performInitialMountWithErrorHandling(renderedElement, hostParent, hostContainerInfo, transaction, context);\n    } else {\n      markup = this.performInitialMount(renderedElement, hostParent, hostContainerInfo, transaction, context);\n    }\n\n    if (inst.componentDidMount) {\n      if (process.env.NODE_ENV !== 'production') {\n        transaction.getReactMountReady().enqueue(function () {\n          measureLifeCyclePerf(function () {\n            return inst.componentDidMount();\n          }, _this._debugID, 'componentDidMount');\n        });\n      } else {\n        transaction.getReactMountReady().enqueue(inst.componentDidMount, inst);\n      }\n    }\n\n    return markup;\n  },\n\n  _constructComponent: function (doConstruct, publicProps, publicContext, updateQueue) {\n    if (process.env.NODE_ENV !== 'production') {\n      ReactCurrentOwner.current = this;\n      try {\n        return this._constructComponentWithoutOwner(doConstruct, publicProps, publicContext, updateQueue);\n      } finally {\n        ReactCurrentOwner.current = null;\n      }\n    } else {\n      return this._constructComponentWithoutOwner(doConstruct, publicProps, publicContext, updateQueue);\n    }\n  },\n\n  _constructComponentWithoutOwner: function (doConstruct, publicProps, publicContext, updateQueue) {\n    var Component = this._currentElement.type;\n\n    if (doConstruct) {\n      if (process.env.NODE_ENV !== 'production') {\n        return measureLifeCyclePerf(function () {\n          return new Component(publicProps, publicContext, updateQueue);\n        }, this._debugID, 'ctor');\n      } else {\n        return new Component(publicProps, publicContext, updateQueue);\n      }\n    }\n\n    // This can still be an instance in case of factory components\n    // but we'll count this as time spent rendering as the more common case.\n    if (process.env.NODE_ENV !== 'production') {\n      return measureLifeCyclePerf(function () {\n        return Component(publicProps, publicContext, updateQueue);\n      }, this._debugID, 'render');\n    } else {\n      return Component(publicProps, publicContext, updateQueue);\n    }\n  },\n\n  performInitialMountWithErrorHandling: function (renderedElement, hostParent, hostContainerInfo, transaction, context) {\n    var markup;\n    var checkpoint = transaction.checkpoint();\n    try {\n      markup = this.performInitialMount(renderedElement, hostParent, hostContainerInfo, transaction, context);\n    } catch (e) {\n      // Roll back to checkpoint, handle error (which may add items to the transaction), and take a new checkpoint\n      transaction.rollback(checkpoint);\n      this._instance.unstable_handleError(e);\n      if (this._pendingStateQueue) {\n        this._instance.state = this._processPendingState(this._instance.props, this._instance.context);\n      }\n      checkpoint = transaction.checkpoint();\n\n      this._renderedComponent.unmountComponent(true);\n      transaction.rollback(checkpoint);\n\n      // Try again - we've informed the component about the error, so they can render an error message this time.\n      // If this throws again, the error will bubble up (and can be caught by a higher error boundary).\n      markup = this.performInitialMount(renderedElement, hostParent, hostContainerInfo, transaction, context);\n    }\n    return markup;\n  },\n\n  performInitialMount: function (renderedElement, hostParent, hostContainerInfo, transaction, context) {\n    var inst = this._instance;\n\n    var debugID = 0;\n    if (process.env.NODE_ENV !== 'production') {\n      debugID = this._debugID;\n    }\n\n    if (inst.componentWillMount) {\n      if (process.env.NODE_ENV !== 'production') {\n        measureLifeCyclePerf(function () {\n          return inst.componentWillMount();\n        }, debugID, 'componentWillMount');\n      } else {\n        inst.componentWillMount();\n      }\n      // When mounting, calls to `setState` by `componentWillMount` will set\n      // `this._pendingStateQueue` without triggering a re-render.\n      if (this._pendingStateQueue) {\n        inst.state = this._processPendingState(inst.props, inst.context);\n      }\n    }\n\n    // If not a stateless component, we now render\n    if (renderedElement === undefined) {\n      renderedElement = this._renderValidatedComponent();\n    }\n\n    var nodeType = ReactNodeTypes.getType(renderedElement);\n    this._renderedNodeType = nodeType;\n    var child = this._instantiateReactComponent(renderedElement, nodeType !== ReactNodeTypes.EMPTY /* shouldHaveDebugID */\n    );\n    this._renderedComponent = child;\n\n    var markup = ReactReconciler.mountComponent(child, transaction, hostParent, hostContainerInfo, this._processChildContext(context), debugID);\n\n    if (process.env.NODE_ENV !== 'production') {\n      if (debugID !== 0) {\n        var childDebugIDs = child._debugID !== 0 ? [child._debugID] : [];\n        ReactInstrumentation.debugTool.onSetChildren(debugID, childDebugIDs);\n      }\n    }\n\n    return markup;\n  },\n\n  getHostNode: function () {\n    return ReactReconciler.getHostNode(this._renderedComponent);\n  },\n\n  /**\n   * Releases any resources allocated by `mountComponent`.\n   *\n   * @final\n   * @internal\n   */\n  unmountComponent: function (safely) {\n    if (!this._renderedComponent) {\n      return;\n    }\n\n    var inst = this._instance;\n\n    if (inst.componentWillUnmount && !inst._calledComponentWillUnmount) {\n      inst._calledComponentWillUnmount = true;\n\n      if (safely) {\n        var name = this.getName() + '.componentWillUnmount()';\n        ReactErrorUtils.invokeGuardedCallback(name, inst.componentWillUnmount.bind(inst));\n      } else {\n        if (process.env.NODE_ENV !== 'production') {\n          measureLifeCyclePerf(function () {\n            return inst.componentWillUnmount();\n          }, this._debugID, 'componentWillUnmount');\n        } else {\n          inst.componentWillUnmount();\n        }\n      }\n    }\n\n    if (this._renderedComponent) {\n      ReactReconciler.unmountComponent(this._renderedComponent, safely);\n      this._renderedNodeType = null;\n      this._renderedComponent = null;\n      this._instance = null;\n    }\n\n    // Reset pending fields\n    // Even if this component is scheduled for another update in ReactUpdates,\n    // it would still be ignored because these fields are reset.\n    this._pendingStateQueue = null;\n    this._pendingReplaceState = false;\n    this._pendingForceUpdate = false;\n    this._pendingCallbacks = null;\n    this._pendingElement = null;\n\n    // These fields do not really need to be reset since this object is no\n    // longer accessible.\n    this._context = null;\n    this._rootNodeID = 0;\n    this._topLevelWrapper = null;\n\n    // Delete the reference from the instance to this internal representation\n    // which allow the internals to be properly cleaned up even if the user\n    // leaks a reference to the public instance.\n    ReactInstanceMap.remove(inst);\n\n    // Some existing components rely on inst.props even after they've been\n    // destroyed (in event handlers).\n    // TODO: inst.props = null;\n    // TODO: inst.state = null;\n    // TODO: inst.context = null;\n  },\n\n  /**\n   * Filters the context object to only contain keys specified in\n   * `contextTypes`\n   *\n   * @param {object} context\n   * @return {?object}\n   * @private\n   */\n  _maskContext: function (context) {\n    var Component = this._currentElement.type;\n    var contextTypes = Component.contextTypes;\n    if (!contextTypes) {\n      return emptyObject;\n    }\n    var maskedContext = {};\n    for (var contextName in contextTypes) {\n      maskedContext[contextName] = context[contextName];\n    }\n    return maskedContext;\n  },\n\n  /**\n   * Filters the context object to only contain keys specified in\n   * `contextTypes`, and asserts that they are valid.\n   *\n   * @param {object} context\n   * @return {?object}\n   * @private\n   */\n  _processContext: function (context) {\n    var maskedContext = this._maskContext(context);\n    if (process.env.NODE_ENV !== 'production') {\n      var Component = this._currentElement.type;\n      if (Component.contextTypes) {\n        this._checkContextTypes(Component.contextTypes, maskedContext, 'context');\n      }\n    }\n    return maskedContext;\n  },\n\n  /**\n   * @param {object} currentContext\n   * @return {object}\n   * @private\n   */\n  _processChildContext: function (currentContext) {\n    var Component = this._currentElement.type;\n    var inst = this._instance;\n    var childContext;\n\n    if (inst.getChildContext) {\n      if (process.env.NODE_ENV !== 'production') {\n        ReactInstrumentation.debugTool.onBeginProcessingChildContext();\n        try {\n          childContext = inst.getChildContext();\n        } finally {\n          ReactInstrumentation.debugTool.onEndProcessingChildContext();\n        }\n      } else {\n        childContext = inst.getChildContext();\n      }\n    }\n\n    if (childContext) {\n      !(typeof Component.childContextTypes === 'object') ? process.env.NODE_ENV !== 'production' ? invariant(false, '%s.getChildContext(): childContextTypes must be defined in order to use getChildContext().', this.getName() || 'ReactCompositeComponent') : _prodInvariant('107', this.getName() || 'ReactCompositeComponent') : void 0;\n      if (process.env.NODE_ENV !== 'production') {\n        this._checkContextTypes(Component.childContextTypes, childContext, 'childContext');\n      }\n      for (var name in childContext) {\n        !(name in Component.childContextTypes) ? process.env.NODE_ENV !== 'production' ? invariant(false, '%s.getChildContext(): key \"%s\" is not defined in childContextTypes.', this.getName() || 'ReactCompositeComponent', name) : _prodInvariant('108', this.getName() || 'ReactCompositeComponent', name) : void 0;\n      }\n      return _assign({}, currentContext, childContext);\n    }\n    return currentContext;\n  },\n\n  /**\n   * Assert that the context types are valid\n   *\n   * @param {object} typeSpecs Map of context field to a ReactPropType\n   * @param {object} values Runtime values that need to be type-checked\n   * @param {string} location e.g. \"prop\", \"context\", \"child context\"\n   * @private\n   */\n  _checkContextTypes: function (typeSpecs, values, location) {\n    if (process.env.NODE_ENV !== 'production') {\n      checkReactTypeSpec(typeSpecs, values, location, this.getName(), null, this._debugID);\n    }\n  },\n\n  receiveComponent: function (nextElement, transaction, nextContext) {\n    var prevElement = this._currentElement;\n    var prevContext = this._context;\n\n    this._pendingElement = null;\n\n    this.updateComponent(transaction, prevElement, nextElement, prevContext, nextContext);\n  },\n\n  /**\n   * If any of `_pendingElement`, `_pendingStateQueue`, or `_pendingForceUpdate`\n   * is set, update the component.\n   *\n   * @param {ReactReconcileTransaction} transaction\n   * @internal\n   */\n  performUpdateIfNecessary: function (transaction) {\n    if (this._pendingElement != null) {\n      ReactReconciler.receiveComponent(this, this._pendingElement, transaction, this._context);\n    } else if (this._pendingStateQueue !== null || this._pendingForceUpdate) {\n      this.updateComponent(transaction, this._currentElement, this._currentElement, this._context, this._context);\n    } else {\n      this._updateBatchNumber = null;\n    }\n  },\n\n  /**\n   * Perform an update to a mounted component. The componentWillReceiveProps and\n   * shouldComponentUpdate methods are called, then (assuming the update isn't\n   * skipped) the remaining update lifecycle methods are called and the DOM\n   * representation is updated.\n   *\n   * By default, this implements React's rendering and reconciliation algorithm.\n   * Sophisticated clients may wish to override this.\n   *\n   * @param {ReactReconcileTransaction} transaction\n   * @param {ReactElement} prevParentElement\n   * @param {ReactElement} nextParentElement\n   * @internal\n   * @overridable\n   */\n  updateComponent: function (transaction, prevParentElement, nextParentElement, prevUnmaskedContext, nextUnmaskedContext) {\n    var inst = this._instance;\n    !(inst != null) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Attempted to update component `%s` that has already been unmounted (or failed to mount).', this.getName() || 'ReactCompositeComponent') : _prodInvariant('136', this.getName() || 'ReactCompositeComponent') : void 0;\n\n    var willReceive = false;\n    var nextContext;\n\n    // Determine if the context has changed or not\n    if (this._context === nextUnmaskedContext) {\n      nextContext = inst.context;\n    } else {\n      nextContext = this._processContext(nextUnmaskedContext);\n      willReceive = true;\n    }\n\n    var prevProps = prevParentElement.props;\n    var nextProps = nextParentElement.props;\n\n    // Not a simple state update but a props update\n    if (prevParentElement !== nextParentElement) {\n      willReceive = true;\n    }\n\n    // An update here will schedule an update but immediately set\n    // _pendingStateQueue which will ensure that any state updates gets\n    // immediately reconciled instead of waiting for the next batch.\n    if (willReceive && inst.componentWillReceiveProps) {\n      if (process.env.NODE_ENV !== 'production') {\n        measureLifeCyclePerf(function () {\n          return inst.componentWillReceiveProps(nextProps, nextContext);\n        }, this._debugID, 'componentWillReceiveProps');\n      } else {\n        inst.componentWillReceiveProps(nextProps, nextContext);\n      }\n    }\n\n    var nextState = this._processPendingState(nextProps, nextContext);\n    var shouldUpdate = true;\n\n    if (!this._pendingForceUpdate) {\n      if (inst.shouldComponentUpdate) {\n        if (process.env.NODE_ENV !== 'production') {\n          shouldUpdate = measureLifeCyclePerf(function () {\n            return inst.shouldComponentUpdate(nextProps, nextState, nextContext);\n          }, this._debugID, 'shouldComponentUpdate');\n        } else {\n          shouldUpdate = inst.shouldComponentUpdate(nextProps, nextState, nextContext);\n        }\n      } else {\n        if (this._compositeType === CompositeTypes.PureClass) {\n          shouldUpdate = !shallowEqual(prevProps, nextProps) || !shallowEqual(inst.state, nextState);\n        }\n      }\n    }\n\n    if (process.env.NODE_ENV !== 'production') {\n      process.env.NODE_ENV !== 'production' ? warning(shouldUpdate !== undefined, '%s.shouldComponentUpdate(): Returned undefined instead of a ' + 'boolean value. Make sure to return true or false.', this.getName() || 'ReactCompositeComponent') : void 0;\n    }\n\n    this._updateBatchNumber = null;\n    if (shouldUpdate) {\n      this._pendingForceUpdate = false;\n      // Will set `this.props`, `this.state` and `this.context`.\n      this._performComponentUpdate(nextParentElement, nextProps, nextState, nextContext, transaction, nextUnmaskedContext);\n    } else {\n      // If it's determined that a component should not update, we still want\n      // to set props and state but we shortcut the rest of the update.\n      this._currentElement = nextParentElement;\n      this._context = nextUnmaskedContext;\n      inst.props = nextProps;\n      inst.state = nextState;\n      inst.context = nextContext;\n    }\n  },\n\n  _processPendingState: function (props, context) {\n    var inst = this._instance;\n    var queue = this._pendingStateQueue;\n    var replace = this._pendingReplaceState;\n    this._pendingReplaceState = false;\n    this._pendingStateQueue = null;\n\n    if (!queue) {\n      return inst.state;\n    }\n\n    if (replace && queue.length === 1) {\n      return queue[0];\n    }\n\n    var nextState = _assign({}, replace ? queue[0] : inst.state);\n    for (var i = replace ? 1 : 0; i < queue.length; i++) {\n      var partial = queue[i];\n      _assign(nextState, typeof partial === 'function' ? partial.call(inst, nextState, props, context) : partial);\n    }\n\n    return nextState;\n  },\n\n  /**\n   * Merges new props and state, notifies delegate methods of update and\n   * performs update.\n   *\n   * @param {ReactElement} nextElement Next element\n   * @param {object} nextProps Next public object to set as properties.\n   * @param {?object} nextState Next object to set as state.\n   * @param {?object} nextContext Next public object to set as context.\n   * @param {ReactReconcileTransaction} transaction\n   * @param {?object} unmaskedContext\n   * @private\n   */\n  _performComponentUpdate: function (nextElement, nextProps, nextState, nextContext, transaction, unmaskedContext) {\n    var _this2 = this;\n\n    var inst = this._instance;\n\n    var hasComponentDidUpdate = Boolean(inst.componentDidUpdate);\n    var prevProps;\n    var prevState;\n    var prevContext;\n    if (hasComponentDidUpdate) {\n      prevProps = inst.props;\n      prevState = inst.state;\n      prevContext = inst.context;\n    }\n\n    if (inst.componentWillUpdate) {\n      if (process.env.NODE_ENV !== 'production') {\n        measureLifeCyclePerf(function () {\n          return inst.componentWillUpdate(nextProps, nextState, nextContext);\n        }, this._debugID, 'componentWillUpdate');\n      } else {\n        inst.componentWillUpdate(nextProps, nextState, nextContext);\n      }\n    }\n\n    this._currentElement = nextElement;\n    this._context = unmaskedContext;\n    inst.props = nextProps;\n    inst.state = nextState;\n    inst.context = nextContext;\n\n    this._updateRenderedComponent(transaction, unmaskedContext);\n\n    if (hasComponentDidUpdate) {\n      if (process.env.NODE_ENV !== 'production') {\n        transaction.getReactMountReady().enqueue(function () {\n          measureLifeCyclePerf(inst.componentDidUpdate.bind(inst, prevProps, prevState, prevContext), _this2._debugID, 'componentDidUpdate');\n        });\n      } else {\n        transaction.getReactMountReady().enqueue(inst.componentDidUpdate.bind(inst, prevProps, prevState, prevContext), inst);\n      }\n    }\n  },\n\n  /**\n   * Call the component's `render` method and update the DOM accordingly.\n   *\n   * @param {ReactReconcileTransaction} transaction\n   * @internal\n   */\n  _updateRenderedComponent: function (transaction, context) {\n    var prevComponentInstance = this._renderedComponent;\n    var prevRenderedElement = prevComponentInstance._currentElement;\n    var nextRenderedElement = this._renderValidatedComponent();\n\n    var debugID = 0;\n    if (process.env.NODE_ENV !== 'production') {\n      debugID = this._debugID;\n    }\n\n    if (shouldUpdateReactComponent(prevRenderedElement, nextRenderedElement)) {\n      ReactReconciler.receiveComponent(prevComponentInstance, nextRenderedElement, transaction, this._processChildContext(context));\n    } else {\n      var oldHostNode = ReactReconciler.getHostNode(prevComponentInstance);\n      ReactReconciler.unmountComponent(prevComponentInstance, false);\n\n      var nodeType = ReactNodeTypes.getType(nextRenderedElement);\n      this._renderedNodeType = nodeType;\n      var child = this._instantiateReactComponent(nextRenderedElement, nodeType !== ReactNodeTypes.EMPTY /* shouldHaveDebugID */\n      );\n      this._renderedComponent = child;\n\n      var nextMarkup = ReactReconciler.mountComponent(child, transaction, this._hostParent, this._hostContainerInfo, this._processChildContext(context), debugID);\n\n      if (process.env.NODE_ENV !== 'production') {\n        if (debugID !== 0) {\n          var childDebugIDs = child._debugID !== 0 ? [child._debugID] : [];\n          ReactInstrumentation.debugTool.onSetChildren(debugID, childDebugIDs);\n        }\n      }\n\n      this._replaceNodeWithMarkup(oldHostNode, nextMarkup, prevComponentInstance);\n    }\n  },\n\n  /**\n   * Overridden in shallow rendering.\n   *\n   * @protected\n   */\n  _replaceNodeWithMarkup: function (oldHostNode, nextMarkup, prevInstance) {\n    ReactComponentEnvironment.replaceNodeWithMarkup(oldHostNode, nextMarkup, prevInstance);\n  },\n\n  /**\n   * @protected\n   */\n  _renderValidatedComponentWithoutOwnerOrContext: function () {\n    var inst = this._instance;\n    var renderedElement;\n\n    if (process.env.NODE_ENV !== 'production') {\n      renderedElement = measureLifeCyclePerf(function () {\n        return inst.render();\n      }, this._debugID, 'render');\n    } else {\n      renderedElement = inst.render();\n    }\n\n    if (process.env.NODE_ENV !== 'production') {\n      // We allow auto-mocks to proceed as if they're returning null.\n      if (renderedElement === undefined && inst.render._isMockFunction) {\n        // This is probably bad practice. Consider warning here and\n        // deprecating this convenience.\n        renderedElement = null;\n      }\n    }\n\n    return renderedElement;\n  },\n\n  /**\n   * @private\n   */\n  _renderValidatedComponent: function () {\n    var renderedElement;\n    if (process.env.NODE_ENV !== 'production' || this._compositeType !== CompositeTypes.StatelessFunctional) {\n      ReactCurrentOwner.current = this;\n      try {\n        renderedElement = this._renderValidatedComponentWithoutOwnerOrContext();\n      } finally {\n        ReactCurrentOwner.current = null;\n      }\n    } else {\n      renderedElement = this._renderValidatedComponentWithoutOwnerOrContext();\n    }\n    !(\n    // TODO: An `isValidNode` function would probably be more appropriate\n    renderedElement === null || renderedElement === false || React.isValidElement(renderedElement)) ? process.env.NODE_ENV !== 'production' ? invariant(false, '%s.render(): A valid React element (or null) must be returned. You may have returned undefined, an array or some other invalid object.', this.getName() || 'ReactCompositeComponent') : _prodInvariant('109', this.getName() || 'ReactCompositeComponent') : void 0;\n\n    return renderedElement;\n  },\n\n  /**\n   * Lazily allocates the refs object and stores `component` as `ref`.\n   *\n   * @param {string} ref Reference name.\n   * @param {component} component Component to store as `ref`.\n   * @final\n   * @private\n   */\n  attachRef: function (ref, component) {\n    var inst = this.getPublicInstance();\n    !(inst != null) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Stateless function components cannot have refs.') : _prodInvariant('110') : void 0;\n    var publicComponentInstance = component.getPublicInstance();\n    if (process.env.NODE_ENV !== 'production') {\n      var componentName = component && component.getName ? component.getName() : 'a component';\n      process.env.NODE_ENV !== 'production' ? warning(publicComponentInstance != null || component._compositeType !== CompositeTypes.StatelessFunctional, 'Stateless function components cannot be given refs ' + '(See ref \"%s\" in %s created by %s). ' + 'Attempts to access this ref will fail.', ref, componentName, this.getName()) : void 0;\n    }\n    var refs = inst.refs === emptyObject ? inst.refs = {} : inst.refs;\n    refs[ref] = publicComponentInstance;\n  },\n\n  /**\n   * Detaches a reference name.\n   *\n   * @param {string} ref Name to dereference.\n   * @final\n   * @private\n   */\n  detachRef: function (ref) {\n    var refs = this.getPublicInstance().refs;\n    delete refs[ref];\n  },\n\n  /**\n   * Get a text description of the component that can be used to identify it\n   * in error messages.\n   * @return {string} The name or null.\n   * @internal\n   */\n  getName: function () {\n    var type = this._currentElement.type;\n    var constructor = this._instance && this._instance.constructor;\n    return type.displayName || constructor && constructor.displayName || type.name || constructor && constructor.name || null;\n  },\n\n  /**\n   * Get the publicly accessible representation of this component - i.e. what\n   * is exposed by refs and returned by render. Can be null for stateless\n   * components.\n   *\n   * @return {ReactComponent} the public component instance.\n   * @internal\n   */\n  getPublicInstance: function () {\n    var inst = this._instance;\n    if (this._compositeType === CompositeTypes.StatelessFunctional) {\n      return null;\n    }\n    return inst;\n  },\n\n  // Stub\n  _instantiateReactComponent: null\n\n};\n\nmodule.exports = ReactCompositeComponent;\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/react-dom/lib/ReactCompositeComponent.js\n// module id = 292\n// module chunks = 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TODO found
Open

    eval("/**\n * Copyright 2015-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n'use strict';\n\nvar _prodInvariant = __webpack_require__(208);\n\nvar ReactCurrentOwner = __webpack_require__(182);\nvar ReactInstanceMap = __webpack_require__(289);\nvar ReactInstrumentation = __webpack_require__(235);\nvar ReactUpdates = __webpack_require__(229);\n\nvar invariant = __webpack_require__(180);\nvar warning = __webpack_require__(183);\n\nfunction enqueueUpdate(internalInstance) {\n  ReactUpdates.enqueueUpdate(internalInstance);\n}\n\nfunction formatUnexpectedArgument(arg) {\n  var type = typeof arg;\n  if (type !== 'object') {\n    return type;\n  }\n  var displayName = arg.constructor && arg.constructor.name || type;\n  var keys = Object.keys(arg);\n  if (keys.length > 0 && keys.length < 20) {\n    return displayName + ' (keys: ' + keys.join(', ') + ')';\n  }\n  return displayName;\n}\n\nfunction getInternalInstanceReadyForUpdate(publicInstance, callerName) {\n  var internalInstance = ReactInstanceMap.get(publicInstance);\n  if (!internalInstance) {\n    if (true) {\n      var ctor = publicInstance.constructor;\n      // Only warn when we have a callerName. Otherwise we should be silent.\n      // We're probably calling from enqueueCallback. We don't want to warn\n      // there because we already warned for the corresponding lifecycle method.\n       true ? warning(!callerName, '%s(...): Can only update a mounted or mounting component. ' + 'This usually means you called %s() on an unmounted component. ' + 'This is a no-op. Please check the code for the %s component.', callerName, callerName, ctor && (ctor.displayName || ctor.name) || 'ReactClass') : void 0;\n    }\n    return null;\n  }\n\n  if (true) {\n     true ? warning(ReactCurrentOwner.current == null, '%s(...): Cannot update during an existing state transition (such as ' + 'within `render` or another component\\'s constructor). Render methods ' + 'should be a pure function of props and state; constructor ' + 'side-effects are an anti-pattern, but can be moved to ' + '`componentWillMount`.', callerName) : void 0;\n  }\n\n  return internalInstance;\n}\n\n/**\n * ReactUpdateQueue allows for state updates to be scheduled into a later\n * reconciliation step.\n */\nvar ReactUpdateQueue = {\n\n  /**\n   * Checks whether or not this composite component is mounted.\n   * @param {ReactClass} publicInstance The instance we want to test.\n   * @return {boolean} True if mounted, false otherwise.\n   * @protected\n   * @final\n   */\n  isMounted: function (publicInstance) {\n    if (true) {\n      var owner = ReactCurrentOwner.current;\n      if (owner !== null) {\n         true ? warning(owner._warnedAboutRefsInRender, '%s is accessing isMounted inside its render() function. ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', owner.getName() || 'A component') : void 0;\n        owner._warnedAboutRefsInRender = true;\n      }\n    }\n    var internalInstance = ReactInstanceMap.get(publicInstance);\n    if (internalInstance) {\n      // During componentWillMount and render this will still be null but after\n      // that will always render to something. At least for now. So we can use\n      // this hack.\n      return !!internalInstance._renderedComponent;\n    } else {\n      return false;\n    }\n  },\n\n  /**\n   * Enqueue a callback that will be executed after all the pending updates\n   * have processed.\n   *\n   * @param {ReactClass} publicInstance The instance to use as `this` context.\n   * @param {?function} callback Called after state is updated.\n   * @param {string} callerName Name of the calling function in the public API.\n   * @internal\n   */\n  enqueueCallback: function (publicInstance, callback, callerName) {\n    ReactUpdateQueue.validateCallback(callback, callerName);\n    var internalInstance = getInternalInstanceReadyForUpdate(publicInstance);\n\n    // Previously we would throw an error if we didn't have an internal\n    // instance. Since we want to make it a no-op instead, we mirror the same\n    // behavior we have in other enqueue* methods.\n    // We also need to ignore callbacks in componentWillMount. See\n    // enqueueUpdates.\n    if (!internalInstance) {\n      return null;\n    }\n\n    if (internalInstance._pendingCallbacks) {\n      internalInstance._pendingCallbacks.push(callback);\n    } else {\n      internalInstance._pendingCallbacks = [callback];\n    }\n    // TODO: The callback here is ignored when setState is called from\n    // componentWillMount. Either fix it or disallow doing so completely in\n    // favor of getInitialState. Alternatively, we can disallow\n    // componentWillMount during server-side rendering.\n    enqueueUpdate(internalInstance);\n  },\n\n  enqueueCallbackInternal: function (internalInstance, callback) {\n    if (internalInstance._pendingCallbacks) {\n      internalInstance._pendingCallbacks.push(callback);\n    } else {\n      internalInstance._pendingCallbacks = [callback];\n    }\n    enqueueUpdate(internalInstance);\n  },\n\n  /**\n   * Forces an update. This should only be invoked when it is known with\n   * certainty that we are **not** in a DOM transaction.\n   *\n   * You may want to call this when you know that some deeper aspect of the\n   * component's state has changed but `setState` was not called.\n   *\n   * This will not invoke `shouldComponentUpdate`, but it will invoke\n   * `componentWillUpdate` and `componentDidUpdate`.\n   *\n   * @param {ReactClass} publicInstance The instance that should rerender.\n   * @internal\n   */\n  enqueueForceUpdate: function (publicInstance) {\n    var internalInstance = getInternalInstanceReadyForUpdate(publicInstance, 'forceUpdate');\n\n    if (!internalInstance) {\n      return;\n    }\n\n    internalInstance._pendingForceUpdate = true;\n\n    enqueueUpdate(internalInstance);\n  },\n\n  /**\n   * Replaces all of the state. Always use this or `setState` to mutate state.\n   * You should treat `this.state` as immutable.\n   *\n   * There is no guarantee that `this.state` will be immediately updated, so\n   * accessing `this.state` after calling this method may return the old value.\n   *\n   * @param {ReactClass} publicInstance The instance that should rerender.\n   * @param {object} completeState Next state.\n   * @internal\n   */\n  enqueueReplaceState: function (publicInstance, completeState) {\n    var internalInstance = getInternalInstanceReadyForUpdate(publicInstance, 'replaceState');\n\n    if (!internalInstance) {\n      return;\n    }\n\n    internalInstance._pendingStateQueue = [completeState];\n    internalInstance._pendingReplaceState = true;\n\n    enqueueUpdate(internalInstance);\n  },\n\n  /**\n   * Sets a subset of the state. This only exists because _pendingState is\n   * internal. This provides a merging strategy that is not available to deep\n   * properties which is confusing. TODO: Expose pendingState or don't use it\n   * during the merge.\n   *\n   * @param {ReactClass} publicInstance The instance that should rerender.\n   * @param {object} partialState Next partial state to be merged with state.\n   * @internal\n   */\n  enqueueSetState: function (publicInstance, partialState) {\n    if (true) {\n      ReactInstrumentation.debugTool.onSetState();\n       true ? warning(partialState != null, 'setState(...): You passed an undefined or null state object; ' + 'instead, use forceUpdate().') : void 0;\n    }\n\n    var internalInstance = getInternalInstanceReadyForUpdate(publicInstance, 'setState');\n\n    if (!internalInstance) {\n      return;\n    }\n\n    var queue = internalInstance._pendingStateQueue || (internalInstance._pendingStateQueue = []);\n    queue.push(partialState);\n\n    enqueueUpdate(internalInstance);\n  },\n\n  enqueueElementInternal: function (internalInstance, nextElement, nextContext) {\n    internalInstance._pendingElement = nextElement;\n    // TODO: introduce _pendingContext instead of setting it directly.\n    internalInstance._context = nextContext;\n    enqueueUpdate(internalInstance);\n  },\n\n  validateCallback: function (callback, callerName) {\n    !(!callback || typeof callback === 'function') ?  true ? invariant(false, '%s(...): Expected the last optional `callback` argument to be a function. Instead received: %s.', callerName, formatUnexpectedArgument(callback)) : _prodInvariant('122', callerName, formatUnexpectedArgument(callback)) : void 0;\n  }\n\n};\n\nmodule.exports = ReactUpdateQueue;//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"308.js","sources":["/home/ubuntu/workspace/node_modules/react-dom/lib/ReactUpdateQueue.js"],"sourcesContent":["/**\n * Copyright 2015-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n'use strict';\n\nvar _prodInvariant = require('./reactProdInvariant');\n\nvar ReactCurrentOwner = require('react/lib/ReactCurrentOwner');\nvar ReactInstanceMap = require('./ReactInstanceMap');\nvar ReactInstrumentation = require('./ReactInstrumentation');\nvar ReactUpdates = require('./ReactUpdates');\n\nvar invariant = require('fbjs/lib/invariant');\nvar warning = require('fbjs/lib/warning');\n\nfunction enqueueUpdate(internalInstance) {\n  ReactUpdates.enqueueUpdate(internalInstance);\n}\n\nfunction formatUnexpectedArgument(arg) {\n  var type = typeof arg;\n  if (type !== 'object') {\n    return type;\n  }\n  var displayName = arg.constructor && arg.constructor.name || type;\n  var keys = Object.keys(arg);\n  if (keys.length > 0 && keys.length < 20) {\n    return displayName + ' (keys: ' + keys.join(', ') + ')';\n  }\n  return displayName;\n}\n\nfunction getInternalInstanceReadyForUpdate(publicInstance, callerName) {\n  var internalInstance = ReactInstanceMap.get(publicInstance);\n  if (!internalInstance) {\n    if (process.env.NODE_ENV !== 'production') {\n      var ctor = publicInstance.constructor;\n      // Only warn when we have a callerName. Otherwise we should be silent.\n      // We're probably calling from enqueueCallback. We don't want to warn\n      // there because we already warned for the corresponding lifecycle method.\n      process.env.NODE_ENV !== 'production' ? warning(!callerName, '%s(...): Can only update a mounted or mounting component. ' + 'This usually means you called %s() on an unmounted component. ' + 'This is a no-op. Please check the code for the %s component.', callerName, callerName, ctor && (ctor.displayName || ctor.name) || 'ReactClass') : void 0;\n    }\n    return null;\n  }\n\n  if (process.env.NODE_ENV !== 'production') {\n    process.env.NODE_ENV !== 'production' ? warning(ReactCurrentOwner.current == null, '%s(...): Cannot update during an existing state transition (such as ' + 'within `render` or another component\\'s constructor). Render methods ' + 'should be a pure function of props and state; constructor ' + 'side-effects are an anti-pattern, but can be moved to ' + '`componentWillMount`.', callerName) : void 0;\n  }\n\n  return internalInstance;\n}\n\n/**\n * ReactUpdateQueue allows for state updates to be scheduled into a later\n * reconciliation step.\n */\nvar ReactUpdateQueue = {\n\n  /**\n   * Checks whether or not this composite component is mounted.\n   * @param {ReactClass} publicInstance The instance we want to test.\n   * @return {boolean} True if mounted, false otherwise.\n   * @protected\n   * @final\n   */\n  isMounted: function (publicInstance) {\n    if (process.env.NODE_ENV !== 'production') {\n      var owner = ReactCurrentOwner.current;\n      if (owner !== null) {\n        process.env.NODE_ENV !== 'production' ? warning(owner._warnedAboutRefsInRender, '%s is accessing isMounted inside its render() function. ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', owner.getName() || 'A component') : void 0;\n        owner._warnedAboutRefsInRender = true;\n      }\n    }\n    var internalInstance = ReactInstanceMap.get(publicInstance);\n    if (internalInstance) {\n      // During componentWillMount and render this will still be null but after\n      // that will always render to something. At least for now. So we can use\n      // this hack.\n      return !!internalInstance._renderedComponent;\n    } else {\n      return false;\n    }\n  },\n\n  /**\n   * Enqueue a callback that will be executed after all the pending updates\n   * have processed.\n   *\n   * @param {ReactClass} publicInstance The instance to use as `this` context.\n   * @param {?function} callback Called after state is updated.\n   * @param {string} callerName Name of the calling function in the public API.\n   * @internal\n   */\n  enqueueCallback: function (publicInstance, callback, callerName) {\n    ReactUpdateQueue.validateCallback(callback, callerName);\n    var internalInstance = getInternalInstanceReadyForUpdate(publicInstance);\n\n    // Previously we would throw an error if we didn't have an internal\n    // instance. Since we want to make it a no-op instead, we mirror the same\n    // behavior we have in other enqueue* methods.\n    // We also need to ignore callbacks in componentWillMount. See\n    // enqueueUpdates.\n    if (!internalInstance) {\n      return null;\n    }\n\n    if (internalInstance._pendingCallbacks) {\n      internalInstance._pendingCallbacks.push(callback);\n    } else {\n      internalInstance._pendingCallbacks = [callback];\n    }\n    // TODO: The callback here is ignored when setState is called from\n    // componentWillMount. Either fix it or disallow doing so completely in\n    // favor of getInitialState. Alternatively, we can disallow\n    // componentWillMount during server-side rendering.\n    enqueueUpdate(internalInstance);\n  },\n\n  enqueueCallbackInternal: function (internalInstance, callback) {\n    if (internalInstance._pendingCallbacks) {\n      internalInstance._pendingCallbacks.push(callback);\n    } else {\n      internalInstance._pendingCallbacks = [callback];\n    }\n    enqueueUpdate(internalInstance);\n  },\n\n  /**\n   * Forces an update. This should only be invoked when it is known with\n   * certainty that we are **not** in a DOM transaction.\n   *\n   * You may want to call this when you know that some deeper aspect of the\n   * component's state has changed but `setState` was not called.\n   *\n   * This will not invoke `shouldComponentUpdate`, but it will invoke\n   * `componentWillUpdate` and `componentDidUpdate`.\n   *\n   * @param {ReactClass} publicInstance The instance that should rerender.\n   * @internal\n   */\n  enqueueForceUpdate: function (publicInstance) {\n    var internalInstance = getInternalInstanceReadyForUpdate(publicInstance, 'forceUpdate');\n\n    if (!internalInstance) {\n      return;\n    }\n\n    internalInstance._pendingForceUpdate = true;\n\n    enqueueUpdate(internalInstance);\n  },\n\n  /**\n   * Replaces all of the state. Always use this or `setState` to mutate state.\n   * You should treat `this.state` as immutable.\n   *\n   * There is no guarantee that `this.state` will be immediately updated, so\n   * accessing `this.state` after calling this method may return the old value.\n   *\n   * @param {ReactClass} publicInstance The instance that should rerender.\n   * @param {object} completeState Next state.\n   * @internal\n   */\n  enqueueReplaceState: function (publicInstance, completeState) {\n    var internalInstance = getInternalInstanceReadyForUpdate(publicInstance, 'replaceState');\n\n    if (!internalInstance) {\n      return;\n    }\n\n    internalInstance._pendingStateQueue = [completeState];\n    internalInstance._pendingReplaceState = true;\n\n    enqueueUpdate(internalInstance);\n  },\n\n  /**\n   * Sets a subset of the state. This only exists because _pendingState is\n   * internal. This provides a merging strategy that is not available to deep\n   * properties which is confusing. TODO: Expose pendingState or don't use it\n   * during the merge.\n   *\n   * @param {ReactClass} publicInstance The instance that should rerender.\n   * @param {object} partialState Next partial state to be merged with state.\n   * @internal\n   */\n  enqueueSetState: function (publicInstance, partialState) {\n    if (process.env.NODE_ENV !== 'production') {\n      ReactInstrumentation.debugTool.onSetState();\n      process.env.NODE_ENV !== 'production' ? warning(partialState != null, 'setState(...): You passed an undefined or null state object; ' + 'instead, use forceUpdate().') : void 0;\n    }\n\n    var internalInstance = getInternalInstanceReadyForUpdate(publicInstance, 'setState');\n\n    if (!internalInstance) {\n      return;\n    }\n\n    var queue = internalInstance._pendingStateQueue || (internalInstance._pendingStateQueue = []);\n    queue.push(partialState);\n\n    enqueueUpdate(internalInstance);\n  },\n\n  enqueueElementInternal: function (internalInstance, nextElement, nextContext) {\n    internalInstance._pendingElement = nextElement;\n    // TODO: introduce _pendingContext instead of setting it directly.\n    internalInstance._context = nextContext;\n    enqueueUpdate(internalInstance);\n  },\n\n  validateCallback: function (callback, callerName) {\n    !(!callback || typeof callback === 'function') ? process.env.NODE_ENV !== 'production' ? invariant(false, '%s(...): Expected the last optional `callback` argument to be a function. Instead received: %s.', callerName, formatUnexpectedArgument(callback)) : _prodInvariant('122', callerName, formatUnexpectedArgument(callback)) : void 0;\n  }\n\n};\n\nmodule.exports = ReactUpdateQueue;\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/react-dom/lib/ReactUpdateQueue.js\n// module id = 308\n// module chunks = 0"],"mappings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sourceRoot":""}");

FIXME found
Open

    eval("/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = __webpack_require__(452);\nvar logging = __webpack_require__(448).log;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1;\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      this.localStreams.push(stream.clone());\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate &&\n                  lCodec.numChannels === rCodec.numChannels) {\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // FIXME: also need to determine intersection between\n                // .rtcpFeedback and .parameters\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates').length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                // FIXME: actually more complicated, needs to match types etc\n                var localtrack = self.localStreams[0]\n                    .getTracks()[sdpMLineIndex];\n                rtpSender = new RTCRtpSender(localtrack,\n                    transports.dtlsTransport);\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (candidate === null) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && cand.port === 0) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n          arguments[1];\n      return new Promise(function(resolve) {\n        // shim getStats with maplike support\n        var results = new Map();\n        Promise.all(promises).then(function(res) {\n          res.forEach(function(result) {\n            Object.keys(result).forEach(function(id) {\n              results.set(id, result[id]);\n              results[id] = result[id];\n            });\n          });\n          if (cb) {\n            window.setTimeout(cb, 0, results);\n          }\n          resolve(results);\n        });\n      });\n    };\n  },\n\n  // Attach a media stream to an element.\n  attachMediaStream: function(element, stream) {\n    logging('DEPRECATED, attachMediaStream will soon be removed.');\n    element.srcObject = stream;\n  },\n\n  reattachMediaStream: function(to, from) {\n    logging('DEPRECATED, reattachMediaStream will soon be removed.');\n    to.srcObject = from.srcObject;\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimPeerConnection: edgeShim.shimPeerConnection,\n  shimGetUserMedia: __webpack_require__(453),\n  attachMediaStream: edgeShim.attachMediaStream,\n  reattachMediaStream: edgeShim.reattachMediaStream\n};\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"451.js","sources":["/home/ubuntu/workspace/node_modules/localmedia/node_modules/webrtc-adapter/src/js/edge/edge_shim.js"],"sourcesContent":["/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = require('sdp');\nvar logging = require('../utils').log;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1;\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      this.localStreams.push(stream.clone());\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate &&\n                  lCodec.numChannels === rCodec.numChannels) {\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // FIXME: also need to determine intersection between\n                // .rtcpFeedback and .parameters\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates').length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                // FIXME: actually more complicated, needs to match types etc\n                var localtrack = self.localStreams[0]\n                    .getTracks()[sdpMLineIndex];\n                rtpSender = new RTCRtpSender(localtrack,\n                    transports.dtlsTransport);\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (candidate === null) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && cand.port === 0) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n          arguments[1];\n      return new Promise(function(resolve) {\n        // shim getStats with maplike support\n        var results = new Map();\n        Promise.all(promises).then(function(res) {\n          res.forEach(function(result) {\n            Object.keys(result).forEach(function(id) {\n              results.set(id, result[id]);\n              results[id] = result[id];\n            });\n          });\n          if (cb) {\n            window.setTimeout(cb, 0, results);\n          }\n          resolve(results);\n        });\n      });\n    };\n  },\n\n  // Attach a media stream to an element.\n  attachMediaStream: function(element, stream) {\n    logging('DEPRECATED, attachMediaStream will soon be removed.');\n    element.srcObject = stream;\n  },\n\n  reattachMediaStream: function(to, from) {\n    logging('DEPRECATED, reattachMediaStream will soon be removed.');\n    to.srcObject = from.srcObject;\n  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FIXME found
Open

    eval("/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = __webpack_require__(452);\nvar logging = __webpack_require__(448).log;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1;\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      this.localStreams.push(stream.clone());\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate &&\n                  lCodec.numChannels === rCodec.numChannels) {\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // FIXME: also need to determine intersection between\n                // .rtcpFeedback and .parameters\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates').length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                // FIXME: actually more complicated, needs to match types etc\n                var localtrack = self.localStreams[0]\n                    .getTracks()[sdpMLineIndex];\n                rtpSender = new RTCRtpSender(localtrack,\n                    transports.dtlsTransport);\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (candidate === null) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && cand.port === 0) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n          arguments[1];\n      return new Promise(function(resolve) {\n        // shim getStats with maplike support\n        var results = new Map();\n        Promise.all(promises).then(function(res) {\n          res.forEach(function(result) {\n            Object.keys(result).forEach(function(id) {\n              results.set(id, result[id]);\n              results[id] = result[id];\n            });\n          });\n          if (cb) {\n            window.setTimeout(cb, 0, results);\n          }\n          resolve(results);\n        });\n      });\n    };\n  },\n\n  // Attach a media stream to an element.\n  attachMediaStream: function(element, stream) {\n    logging('DEPRECATED, attachMediaStream will soon be removed.');\n    element.srcObject = stream;\n  },\n\n  reattachMediaStream: function(to, from) {\n    logging('DEPRECATED, reattachMediaStream will soon be removed.');\n    to.srcObject = from.srcObject;\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimPeerConnection: edgeShim.shimPeerConnection,\n  shimGetUserMedia: __webpack_require__(453),\n  attachMediaStream: edgeShim.attachMediaStream,\n  reattachMediaStream: edgeShim.reattachMediaStream\n};\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"451.js","sources":["/home/ubuntu/workspace/node_modules/localmedia/node_modules/webrtc-adapter/src/js/edge/edge_shim.js"],"sourcesContent":["/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = require('sdp');\nvar logging = require('../utils').log;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1;\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      this.localStreams.push(stream.clone());\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate &&\n                  lCodec.numChannels === rCodec.numChannels) {\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // FIXME: also need to determine intersection between\n                // .rtcpFeedback and .parameters\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates').length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                // FIXME: actually more complicated, needs to match types etc\n                var localtrack = self.localStreams[0]\n                    .getTracks()[sdpMLineIndex];\n                rtpSender = new RTCRtpSender(localtrack,\n                    transports.dtlsTransport);\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (candidate === null) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && cand.port === 0) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n          arguments[1];\n      return new Promise(function(resolve) {\n        // shim getStats with maplike support\n        var results = new Map();\n        Promise.all(promises).then(function(res) {\n          res.forEach(function(result) {\n            Object.keys(result).forEach(function(id) {\n              results.set(id, result[id]);\n              results[id] = result[id];\n            });\n          });\n          if (cb) {\n            window.setTimeout(cb, 0, results);\n          }\n          resolve(results);\n        });\n      });\n    };\n  },\n\n  // Attach a media stream to an element.\n  attachMediaStream: function(element, stream) {\n    logging('DEPRECATED, attachMediaStream will soon be removed.');\n    element.srcObject = stream;\n  },\n\n  reattachMediaStream: function(to, from) {\n    logging('DEPRECATED, reattachMediaStream will soon be removed.');\n    to.srcObject = from.srcObject;\n  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TODO found
Open

    eval("/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n'use strict';\nvar safariShim = {\n  // TODO: DrAlex, should be here, double check against LayoutTests\n  // shimOnTrack: function() { },\n\n  // TODO: DrAlex\n  // attachMediaStream: function(element, stream) { },\n  // reattachMediaStream: function(to, from) { },\n\n  // TODO: once the back-end for the mac port is done, add.\n  // TODO: check for webkitGTK+\n  // shimPeerConnection: function() { },\n\n  shimGetUserMedia: function() {\n    navigator.getUserMedia = navigator.webkitGetUserMedia;\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimGetUserMedia: safariShim.shimGetUserMedia\n  // TODO\n  // shimOnTrack: safariShim.shimOnTrack,\n  // shimPeerConnection: safariShim.shimPeerConnection,\n  // attachMediaStream: safariShim.attachMediaStream,\n  // reattachMediaStream: safariShim.reattachMediaStream\n};\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,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");

TODO found
Open

    eval("/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n'use strict';\nvar safariShim = {\n  // TODO: DrAlex, should be here, double check against LayoutTests\n  // shimOnTrack: function() { },\n\n  // TODO: DrAlex\n  // attachMediaStream: function(element, stream) { },\n  // reattachMediaStream: function(to, from) { },\n\n  // TODO: once the back-end for the mac port is done, add.\n  // TODO: check for webkitGTK+\n  // shimPeerConnection: function() { },\n\n  shimGetUserMedia: function() {\n    navigator.getUserMedia = navigator.webkitGetUserMedia;\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimGetUserMedia: safariShim.shimGetUserMedia\n  // TODO\n  // shimOnTrack: safariShim.shimOnTrack,\n  // shimPeerConnection: safariShim.shimPeerConnection,\n  // attachMediaStream: safariShim.attachMediaStream,\n  // reattachMediaStream: safariShim.reattachMediaStream\n};\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,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");

TODO found
Open

    eval("/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\nvar logging = __webpack_require__(460).log;\n\n// Expose public methods.\nmodule.exports = function() {\n  var constraintsToChrome_ = function(c) {\n    if (typeof c !== 'object' || c.mandatory || c.optional) {\n      return c;\n    }\n    var cc = {};\n    Object.keys(c).forEach(function(key) {\n      if (key === 'require' || key === 'advanced' || key === 'mediaSource') {\n        return;\n      }\n      var r = (typeof c[key] === 'object') ? c[key] : {ideal: c[key]};\n      if (r.exact !== undefined && typeof r.exact === 'number') {\n        r.min = r.max = r.exact;\n      }\n      var oldname_ = function(prefix, name) {\n        if (prefix) {\n          return prefix + name.charAt(0).toUpperCase() + name.slice(1);\n        }\n        return (name === 'deviceId') ? 'sourceId' : name;\n      };\n      if (r.ideal !== undefined) {\n        cc.optional = cc.optional || [];\n        var oc = {};\n        if (typeof r.ideal === 'number') {\n          oc[oldname_('min', key)] = r.ideal;\n          cc.optional.push(oc);\n          oc = {};\n          oc[oldname_('max', key)] = r.ideal;\n          cc.optional.push(oc);\n        } else {\n          oc[oldname_('', key)] = r.ideal;\n          cc.optional.push(oc);\n        }\n      }\n      if (r.exact !== undefined && typeof r.exact !== 'number') {\n        cc.mandatory = cc.mandatory || {};\n        cc.mandatory[oldname_('', key)] = r.exact;\n      } else {\n        ['min', 'max'].forEach(function(mix) {\n          if (r[mix] !== undefined) {\n            cc.mandatory = cc.mandatory || {};\n            cc.mandatory[oldname_(mix, key)] = r[mix];\n          }\n        });\n      }\n    });\n    if (c.advanced) {\n      cc.optional = (cc.optional || []).concat(c.advanced);\n    }\n    return cc;\n  };\n\n  var shimConstraints_ = function(constraints, func) {\n    constraints = JSON.parse(JSON.stringify(constraints));\n    if (constraints && constraints.audio) {\n      constraints.audio = constraintsToChrome_(constraints.audio);\n    }\n    if (constraints && typeof constraints.video === 'object') {\n      // Shim facingMode for mobile, where it defaults to \"user\".\n      var face = constraints.video.facingMode;\n      face = face && ((typeof face === 'object') ? face : {ideal: face});\n\n      if ((face && (face.exact === 'user' || face.exact === 'environment' ||\n                    face.ideal === 'user' || face.ideal === 'environment')) &&\n          !(navigator.mediaDevices.getSupportedConstraints &&\n            navigator.mediaDevices.getSupportedConstraints().facingMode)) {\n        delete constraints.video.facingMode;\n        if (face.exact === 'environment' || face.ideal === 'environment') {\n          // Look for \"back\" in label, or use last cam (typically back cam).\n          return navigator.mediaDevices.enumerateDevices()\n          .then(function(devices) {\n            devices = devices.filter(function(d) {\n              return d.kind === 'videoinput';\n            });\n            var back = devices.find(function(d) {\n              return d.label.toLowerCase().indexOf('back') !== -1;\n            }) || (devices.length && devices[devices.length - 1]);\n            if (back) {\n              constraints.video.deviceId = face.exact ? {exact: back.deviceId} :\n                                                        {ideal: back.deviceId};\n            }\n            constraints.video = constraintsToChrome_(constraints.video);\n            logging('chrome: ' + JSON.stringify(constraints));\n            return func(constraints);\n          });\n        }\n      }\n      constraints.video = constraintsToChrome_(constraints.video);\n    }\n    logging('chrome: ' + JSON.stringify(constraints));\n    return func(constraints);\n  };\n\n  var shimError_ = function(e) {\n    return {\n      name: {\n        PermissionDeniedError: 'NotAllowedError',\n        ConstraintNotSatisfiedError: 'OverconstrainedError'\n      }[e.name] || e.name,\n      message: e.message,\n      constraint: e.constraintName,\n      toString: function() {\n        return this.name + (this.message && ': ') + this.message;\n      }\n    };\n  };\n\n  var getUserMedia_ = function(constraints, onSuccess, onError) {\n    shimConstraints_(constraints, function(c) {\n      navigator.webkitGetUserMedia(c, onSuccess, function(e) {\n        onError(shimError_(e));\n      });\n    });\n  };\n\n  navigator.getUserMedia = getUserMedia_;\n\n  // Returns the result of getUserMedia as a Promise.\n  var getUserMediaPromise_ = function(constraints) {\n    return new Promise(function(resolve, reject) {\n      navigator.getUserMedia(constraints, resolve, reject);\n    });\n  };\n\n  if (!navigator.mediaDevices) {\n    navigator.mediaDevices = {\n      getUserMedia: getUserMediaPromise_,\n      enumerateDevices: function() {\n        return new Promise(function(resolve) {\n          var kinds = {audio: 'audioinput', video: 'videoinput'};\n          return MediaStreamTrack.getSources(function(devices) {\n            resolve(devices.map(function(device) {\n              return {label: device.label,\n                      kind: kinds[device.kind],\n                      deviceId: device.id,\n                      groupId: ''};\n            }));\n          });\n        });\n      }\n    };\n  }\n\n  // A shim for getUserMedia method on the mediaDevices object.\n  // TODO(KaptenJansson) remove once implemented in Chrome stable.\n  if (!navigator.mediaDevices.getUserMedia) {\n    navigator.mediaDevices.getUserMedia = function(constraints) {\n      return getUserMediaPromise_(constraints);\n    };\n  } else {\n    // Even though Chrome 45 has navigator.mediaDevices and a getUserMedia\n    // function which returns a Promise, it does not accept spec-style\n    // constraints.\n    var origGetUserMedia = navigator.mediaDevices.getUserMedia.\n        bind(navigator.mediaDevices);\n    navigator.mediaDevices.getUserMedia = function(cs) {\n      return shimConstraints_(cs, function(c) {\n        return origGetUserMedia(c).then(function(stream) {\n          if (c.audio && !stream.getAudioTracks().length ||\n              c.video && !stream.getVideoTracks().length) {\n            stream.getTracks().forEach(function(track) {\n              track.stop();\n            });\n            throw new DOMException('', 'NotFoundError');\n          }\n          return stream;\n        }, function(e) {\n          return Promise.reject(shimError_(e));\n        });\n      });\n    };\n  }\n\n  // Dummy devicechange event methods.\n  // TODO(KaptenJansson) remove once implemented in Chrome stable.\n  if (typeof navigator.mediaDevices.addEventListener === 'undefined') {\n    navigator.mediaDevices.addEventListener = function() {\n      logging('Dummy mediaDevices.addEventListener called.');\n    };\n  }\n  if (typeof navigator.mediaDevices.removeEventListener === 'undefined') {\n    navigator.mediaDevices.removeEventListener = function() {\n      logging('Dummy mediaDevices.removeEventListener called.');\n    };\n  }\n};\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"462.js","sources":["/home/ubuntu/workspace/node_modules/webrtc-adapter/src/js/chrome/getusermedia.js"],"sourcesContent":["/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\nvar logging = require('../utils.js').log;\n\n// Expose public methods.\nmodule.exports = function() {\n  var constraintsToChrome_ = function(c) {\n    if (typeof c !== 'object' || c.mandatory || c.optional) {\n      return c;\n    }\n    var cc = {};\n    Object.keys(c).forEach(function(key) {\n      if (key === 'require' || key === 'advanced' || key === 'mediaSource') {\n        return;\n      }\n      var r = (typeof c[key] === 'object') ? c[key] : {ideal: c[key]};\n      if (r.exact !== undefined && typeof r.exact === 'number') {\n        r.min = r.max = r.exact;\n      }\n      var oldname_ = function(prefix, name) {\n        if (prefix) {\n          return prefix + name.charAt(0).toUpperCase() + name.slice(1);\n        }\n        return (name === 'deviceId') ? 'sourceId' : name;\n      };\n      if (r.ideal !== undefined) {\n        cc.optional = cc.optional || [];\n        var oc = {};\n        if (typeof r.ideal === 'number') {\n          oc[oldname_('min', key)] = r.ideal;\n          cc.optional.push(oc);\n          oc = {};\n          oc[oldname_('max', key)] = r.ideal;\n          cc.optional.push(oc);\n        } else {\n          oc[oldname_('', key)] = r.ideal;\n          cc.optional.push(oc);\n        }\n      }\n      if (r.exact !== undefined && typeof r.exact !== 'number') {\n        cc.mandatory = cc.mandatory || {};\n        cc.mandatory[oldname_('', key)] = r.exact;\n      } else {\n        ['min', 'max'].forEach(function(mix) {\n          if (r[mix] !== undefined) {\n            cc.mandatory = cc.mandatory || {};\n            cc.mandatory[oldname_(mix, key)] = r[mix];\n          }\n        });\n      }\n    });\n    if (c.advanced) {\n      cc.optional = (cc.optional || []).concat(c.advanced);\n    }\n    return cc;\n  };\n\n  var shimConstraints_ = function(constraints, func) {\n    constraints = JSON.parse(JSON.stringify(constraints));\n    if (constraints && constraints.audio) {\n      constraints.audio = constraintsToChrome_(constraints.audio);\n    }\n    if (constraints && typeof constraints.video === 'object') {\n      // Shim facingMode for mobile, where it defaults to \"user\".\n      var face = constraints.video.facingMode;\n      face = face && ((typeof face === 'object') ? face : {ideal: face});\n\n      if ((face && (face.exact === 'user' || face.exact === 'environment' ||\n                    face.ideal === 'user' || face.ideal === 'environment')) &&\n          !(navigator.mediaDevices.getSupportedConstraints &&\n            navigator.mediaDevices.getSupportedConstraints().facingMode)) {\n        delete constraints.video.facingMode;\n        if (face.exact === 'environment' || face.ideal === 'environment') {\n          // Look for \"back\" in label, or use last cam (typically back cam).\n          return navigator.mediaDevices.enumerateDevices()\n          .then(function(devices) {\n            devices = devices.filter(function(d) {\n              return d.kind === 'videoinput';\n            });\n            var back = devices.find(function(d) {\n              return d.label.toLowerCase().indexOf('back') !== -1;\n            }) || (devices.length && devices[devices.length - 1]);\n            if (back) {\n              constraints.video.deviceId = face.exact ? {exact: back.deviceId} :\n                                                        {ideal: back.deviceId};\n            }\n            constraints.video = constraintsToChrome_(constraints.video);\n            logging('chrome: ' + JSON.stringify(constraints));\n            return func(constraints);\n          });\n        }\n      }\n      constraints.video = constraintsToChrome_(constraints.video);\n    }\n    logging('chrome: ' + JSON.stringify(constraints));\n    return func(constraints);\n  };\n\n  var shimError_ = function(e) {\n    return {\n      name: {\n        PermissionDeniedError: 'NotAllowedError',\n        ConstraintNotSatisfiedError: 'OverconstrainedError'\n      }[e.name] || e.name,\n      message: e.message,\n      constraint: e.constraintName,\n      toString: function() {\n        return this.name + (this.message && ': ') + this.message;\n      }\n    };\n  };\n\n  var getUserMedia_ = function(constraints, onSuccess, onError) {\n    shimConstraints_(constraints, function(c) {\n      navigator.webkitGetUserMedia(c, onSuccess, function(e) {\n        onError(shimError_(e));\n      });\n    });\n  };\n\n  navigator.getUserMedia = getUserMedia_;\n\n  // Returns the result of getUserMedia as a Promise.\n  var getUserMediaPromise_ = function(constraints) {\n    return new Promise(function(resolve, reject) {\n      navigator.getUserMedia(constraints, resolve, reject);\n    });\n  };\n\n  if (!navigator.mediaDevices) {\n    navigator.mediaDevices = {\n      getUserMedia: getUserMediaPromise_,\n      enumerateDevices: function() {\n        return new Promise(function(resolve) {\n          var kinds = {audio: 'audioinput', video: 'videoinput'};\n          return MediaStreamTrack.getSources(function(devices) {\n            resolve(devices.map(function(device) {\n              return {label: device.label,\n                      kind: kinds[device.kind],\n                      deviceId: device.id,\n                      groupId: ''};\n            }));\n          });\n        });\n      }\n    };\n  }\n\n  // A shim for getUserMedia method on the mediaDevices object.\n  // TODO(KaptenJansson) remove once implemented in Chrome stable.\n  if (!navigator.mediaDevices.getUserMedia) {\n    navigator.mediaDevices.getUserMedia = function(constraints) {\n      return getUserMediaPromise_(constraints);\n    };\n  } else {\n    // Even though Chrome 45 has navigator.mediaDevices and a getUserMedia\n    // function which returns a Promise, it does not accept spec-style\n    // constraints.\n    var origGetUserMedia = navigator.mediaDevices.getUserMedia.\n        bind(navigator.mediaDevices);\n    navigator.mediaDevices.getUserMedia = function(cs) {\n      return shimConstraints_(cs, function(c) {\n        return origGetUserMedia(c).then(function(stream) {\n          if (c.audio && !stream.getAudioTracks().length ||\n              c.video && !stream.getVideoTracks().length) {\n            stream.getTracks().forEach(function(track) {\n              track.stop();\n            });\n            throw new DOMException('', 'NotFoundError');\n          }\n          return stream;\n        }, function(e) {\n          return Promise.reject(shimError_(e));\n        });\n      });\n    };\n  }\n\n  // Dummy devicechange event methods.\n  // TODO(KaptenJansson) remove once implemented in Chrome stable.\n  if (typeof navigator.mediaDevices.addEventListener === 'undefined') {\n    navigator.mediaDevices.addEventListener = function() {\n      logging('Dummy mediaDevices.addEventListener called.');\n    };\n  }\n  if (typeof navigator.mediaDevices.removeEventListener === 'undefined') {\n    navigator.mediaDevices.removeEventListener = function() {\n      logging('Dummy mediaDevices.removeEventListener called.');\n    };\n  }\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/webrtc-adapter/src/js/chrome/getusermedia.js\n// module id = 462\n// module chunks = 0"],"mappings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sourceRoot":""}");

FIXME found
Open

    eval("/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = __webpack_require__(452);\nvar browserDetails = __webpack_require__(460).browserDetails;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n      // this adds an additional event listener to MediaStrackTrack that signals\n      // when a tracks enabled property was changed.\n      var origMSTEnabled = Object.getOwnPropertyDescriptor(\n          MediaStreamTrack.prototype, 'enabled');\n      Object.defineProperty(MediaStreamTrack.prototype, 'enabled', {\n        set: function(value) {\n          origMSTEnabled.set.call(this, value);\n          var ev = new Event('enabled');\n          ev.enabled = value;\n          this.dispatchEvent(ev);\n        }\n      });\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        // 3) turn: with ipv6 addresses\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return (url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1 &&\n                  url.indexOf('turn:[') === -1) ||\n                  (url.indexOf('stun:') === 0 &&\n                    browserDetails.version >= 14393);\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n      this._config = config;\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.getConfiguration = function() {\n      return this._config;\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      var clonedStream = stream.clone();\n      stream.getTracks().forEach(function(track, idx) {\n        var clonedTrack = clonedStream.getTracks()[idx];\n        track.addEventListener('enabled', function(event) {\n          clonedTrack.enabled = event.enabled;\n        });\n      });\n      this.localStreams.push(clonedStream);\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate) {\n                // number of channels is the highest common number of channels\n                rCodec.numChannels = Math.min(lCodec.numChannels,\n                    rCodec.numChannels);\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // determine common feedback mechanisms\n                rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) {\n                  for (var j = 0; j < lCodec.rtcpFeedback.length; j++) {\n                    if (lCodec.rtcpFeedback[j].type === fb.type &&\n                        lCodec.rtcpFeedback[j].parameter === fb.parameter) {\n                      return true;\n                    }\n                  }\n                  return false;\n                });\n                // FIXME: also need to determine .parameters\n                //  see https://github.com/openpeer/ortc/issues/569\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        // remove RTX field in Edge 14942\n        if (transceiver.kind === 'video'\n            && transceiver.recvEncodingParameters) {\n          transceiver.recvEncodingParameters.forEach(function(p) {\n            delete p.rtx;\n          });\n        }\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected && !transceiver.isDatachannel) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            // Reject datachannels which are not implemented yet.\n            if (kind === 'application' && mline[2] === 'DTLS/SCTP') {\n              self.transceivers[sdpMLineIndex] = {\n                mid: mid,\n                isDatachannel: true\n              };\n              return;\n            }\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates', sessionpart).length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n\n              // filter RTX until additional stuff needed for RTX is implemented\n              // in adapter.js\n              localCapabilities.codecs = localCapabilities.codecs.filter(\n                  function(codec) {\n                    return codec.name !== 'rtx';\n                  });\n\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                var localTrack;\n                if (kind === 'audio') {\n                  localTrack = self.localStreams[0].getAudioTracks()[0];\n                } else if (kind === 'video') {\n                  localTrack = self.localStreams[0].getVideoTracks()[0];\n                }\n                if (localTrack) {\n                  rtpSender = new RTCRtpSender(localTrack,\n                      transports.dtlsTransport);\n                }\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        // filter RTX until additional stuff needed for RTX is implemented\n        // in adapter.js\n        localCapabilities.codecs = localCapabilities.codecs.filter(\n            function(codec) {\n              return codec.name !== 'rtx';\n            });\n        localCapabilities.codecs.forEach(function(codec) {\n          // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552\n          // by adding level-asymmetry-allowed=1\n          if (codec.name === 'H264' &&\n              codec.parameters['level-asymmetry-allowed'] === undefined) {\n            codec.parameters['level-asymmetry-allowed'] = '1';\n          }\n        });\n\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        if (transceiver.isDatachannel) {\n          sdp += 'm=application 0 DTLS/SCTP 5000\\r\\n' +\n              'c=IN IP4 0.0.0.0\\r\\n' +\n              'a=mid:' + transceiver.mid + '\\r\\n';\n          return;\n        }\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (!candidate) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n          arguments[1];\n      return new Promise(function(resolve) {\n        // shim getStats with maplike support\n        var results = new Map();\n        Promise.all(promises).then(function(res) {\n          res.forEach(function(result) {\n            Object.keys(result).forEach(function(id) {\n              results.set(id, result[id]);\n              results[id] = result[id];\n            });\n          });\n          if (cb) {\n            window.setTimeout(cb, 0, results);\n          }\n          resolve(results);\n        });\n      });\n    };\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimPeerConnection: edgeShim.shimPeerConnection,\n  shimGetUserMedia: __webpack_require__(464)\n};\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"463.js","sources":["/home/ubuntu/workspace/node_modules/webrtc-adapter/src/js/edge/edge_shim.js"],"sourcesContent":["/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = require('sdp');\nvar browserDetails = require('../utils').browserDetails;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n      // this adds an additional event listener to MediaStrackTrack that signals\n      // when a tracks enabled property was changed.\n      var origMSTEnabled = Object.getOwnPropertyDescriptor(\n          MediaStreamTrack.prototype, 'enabled');\n      Object.defineProperty(MediaStreamTrack.prototype, 'enabled', {\n        set: function(value) {\n          origMSTEnabled.set.call(this, value);\n          var ev = new Event('enabled');\n          ev.enabled = value;\n          this.dispatchEvent(ev);\n        }\n      });\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        // 3) turn: with ipv6 addresses\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return (url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1 &&\n                  url.indexOf('turn:[') === -1) ||\n                  (url.indexOf('stun:') === 0 &&\n                    browserDetails.version >= 14393);\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n      this._config = config;\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.getConfiguration = function() {\n      return this._config;\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      var clonedStream = stream.clone();\n      stream.getTracks().forEach(function(track, idx) {\n        var clonedTrack = clonedStream.getTracks()[idx];\n        track.addEventListener('enabled', function(event) {\n          clonedTrack.enabled = event.enabled;\n        });\n      });\n      this.localStreams.push(clonedStream);\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate) {\n                // number of channels is the highest common number of channels\n                rCodec.numChannels = Math.min(lCodec.numChannels,\n                    rCodec.numChannels);\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // determine common feedback mechanisms\n                rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) {\n                  for (var j = 0; j < lCodec.rtcpFeedback.length; j++) {\n                    if (lCodec.rtcpFeedback[j].type === fb.type &&\n                        lCodec.rtcpFeedback[j].parameter === fb.parameter) {\n                      return true;\n                    }\n                  }\n                  return false;\n                });\n                // FIXME: also need to determine .parameters\n                //  see https://github.com/openpeer/ortc/issues/569\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        // remove RTX field in Edge 14942\n        if (transceiver.kind === 'video'\n            && transceiver.recvEncodingParameters) {\n          transceiver.recvEncodingParameters.forEach(function(p) {\n            delete p.rtx;\n          });\n        }\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected && !transceiver.isDatachannel) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            // Reject datachannels which are not implemented yet.\n            if (kind === 'application' && mline[2] === 'DTLS/SCTP') {\n              self.transceivers[sdpMLineIndex] = {\n                mid: mid,\n                isDatachannel: true\n              };\n              return;\n            }\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates', sessionpart).length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n\n              // filter RTX until additional stuff needed for RTX is implemented\n              // in adapter.js\n              localCapabilities.codecs = localCapabilities.codecs.filter(\n                  function(codec) {\n                    return codec.name !== 'rtx';\n                  });\n\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                var localTrack;\n                if (kind === 'audio') {\n                  localTrack = self.localStreams[0].getAudioTracks()[0];\n                } else if (kind === 'video') {\n                  localTrack = self.localStreams[0].getVideoTracks()[0];\n                }\n                if (localTrack) {\n                  rtpSender = new RTCRtpSender(localTrack,\n                      transports.dtlsTransport);\n                }\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        // filter RTX until additional stuff needed for RTX is implemented\n        // in adapter.js\n        localCapabilities.codecs = localCapabilities.codecs.filter(\n            function(codec) {\n              return codec.name !== 'rtx';\n            });\n        localCapabilities.codecs.forEach(function(codec) {\n          // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552\n          // by adding level-asymmetry-allowed=1\n          if (codec.name === 'H264' &&\n              codec.parameters['level-asymmetry-allowed'] === undefined) {\n            codec.parameters['level-asymmetry-allowed'] = '1';\n          }\n        });\n\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        if (transceiver.isDatachannel) {\n          sdp += 'm=application 0 DTLS/SCTP 5000\\r\\n' +\n              'c=IN IP4 0.0.0.0\\r\\n' +\n              'a=mid:' + transceiver.mid + '\\r\\n';\n          return;\n        }\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (!candidate) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n     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TODO found
Open

    eval("/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n'use strict';\n\nvar _prodInvariant = __webpack_require__(208);\n\nvar EventPluginRegistry = __webpack_require__(216);\nvar EventPluginUtils = __webpack_require__(217);\nvar ReactErrorUtils = __webpack_require__(218);\n\nvar accumulateInto = __webpack_require__(219);\nvar forEachAccumulated = __webpack_require__(220);\nvar invariant = __webpack_require__(180);\n\n/**\n * Internal store for event listeners\n */\nvar listenerBank = {};\n\n/**\n * Internal queue of events that have accumulated their dispatches and are\n * waiting to have their dispatches executed.\n */\nvar eventQueue = null;\n\n/**\n * Dispatches an event and releases it back into the pool, unless persistent.\n *\n * @param {?object} event Synthetic event to be dispatched.\n * @param {boolean} simulated If the event is simulated (changes exn behavior)\n * @private\n */\nvar executeDispatchesAndRelease = function (event, simulated) {\n  if (event) {\n    EventPluginUtils.executeDispatchesInOrder(event, simulated);\n\n    if (!event.isPersistent()) {\n      event.constructor.release(event);\n    }\n  }\n};\nvar executeDispatchesAndReleaseSimulated = function (e) {\n  return executeDispatchesAndRelease(e, true);\n};\nvar executeDispatchesAndReleaseTopLevel = function (e) {\n  return executeDispatchesAndRelease(e, false);\n};\n\nvar getDictionaryKey = function (inst) {\n  // Prevents V8 performance issue:\n  // https://github.com/facebook/react/pull/7232\n  return '.' + inst._rootNodeID;\n};\n\nfunction isInteractive(tag) {\n  return tag === 'button' || tag === 'input' || tag === 'select' || tag === 'textarea';\n}\n\nfunction shouldPreventMouseEvent(name, type, props) {\n  switch (name) {\n    case 'onClick':\n    case 'onClickCapture':\n    case 'onDoubleClick':\n    case 'onDoubleClickCapture':\n    case 'onMouseDown':\n    case 'onMouseDownCapture':\n    case 'onMouseMove':\n    case 'onMouseMoveCapture':\n    case 'onMouseUp':\n    case 'onMouseUpCapture':\n      return !!(props.disabled && isInteractive(type));\n    default:\n      return false;\n  }\n}\n\n/**\n * This is a unified interface for event plugins to be installed and configured.\n *\n * Event plugins can implement the following properties:\n *\n *   `extractEvents` {function(string, DOMEventTarget, string, object): *}\n *     Required. When a top-level event is fired, this method is expected to\n *     extract synthetic events that will in turn be queued and dispatched.\n *\n *   `eventTypes` {object}\n *     Optional, plugins that fire events must publish a mapping of registration\n *     names that are used to register listeners. Values of this mapping must\n *     be objects that contain `registrationName` or `phasedRegistrationNames`.\n *\n *   `executeDispatch` {function(object, function, string)}\n *     Optional, allows plugins to override how an event gets dispatched. By\n *     default, the listener is simply invoked.\n *\n * Each plugin that is injected into `EventsPluginHub` is immediately operable.\n *\n * @public\n */\nvar EventPluginHub = {\n\n  /**\n   * Methods for injecting dependencies.\n   */\n  injection: {\n\n    /**\n     * @param {array} InjectedEventPluginOrder\n     * @public\n     */\n    injectEventPluginOrder: EventPluginRegistry.injectEventPluginOrder,\n\n    /**\n     * @param {object} injectedNamesToPlugins Map from names to plugin modules.\n     */\n    injectEventPluginsByName: EventPluginRegistry.injectEventPluginsByName\n\n  },\n\n  /**\n   * Stores `listener` at `listenerBank[registrationName][key]`. Is idempotent.\n   *\n   * @param {object} inst The instance, which is the source of events.\n   * @param {string} registrationName Name of listener (e.g. `onClick`).\n   * @param {function} listener The callback to store.\n   */\n  putListener: function (inst, registrationName, listener) {\n    !(typeof listener === 'function') ?  true ? invariant(false, 'Expected %s listener to be a function, instead got type %s', registrationName, typeof listener) : _prodInvariant('94', registrationName, typeof listener) : void 0;\n\n    var key = getDictionaryKey(inst);\n    var bankForRegistrationName = listenerBank[registrationName] || (listenerBank[registrationName] = {});\n    bankForRegistrationName[key] = listener;\n\n    var PluginModule = EventPluginRegistry.registrationNameModules[registrationName];\n    if (PluginModule && PluginModule.didPutListener) {\n      PluginModule.didPutListener(inst, registrationName, listener);\n    }\n  },\n\n  /**\n   * @param {object} inst The instance, which is the source of events.\n   * @param {string} registrationName Name of listener (e.g. `onClick`).\n   * @return {?function} The stored callback.\n   */\n  getListener: function (inst, registrationName) {\n    // TODO: shouldPreventMouseEvent is DOM-specific and definitely should not\n    // live here; needs to be moved to a better place soon\n    var bankForRegistrationName = listenerBank[registrationName];\n    if (shouldPreventMouseEvent(registrationName, inst._currentElement.type, inst._currentElement.props)) {\n      return null;\n    }\n    var key = getDictionaryKey(inst);\n    return bankForRegistrationName && bankForRegistrationName[key];\n  },\n\n  /**\n   * Deletes a listener from the registration bank.\n   *\n   * @param {object} inst The instance, which is the source of events.\n   * @param {string} registrationName Name of listener (e.g. `onClick`).\n   */\n  deleteListener: function (inst, registrationName) {\n    var PluginModule = EventPluginRegistry.registrationNameModules[registrationName];\n    if (PluginModule && PluginModule.willDeleteListener) {\n      PluginModule.willDeleteListener(inst, registrationName);\n    }\n\n    var bankForRegistrationName = listenerBank[registrationName];\n    // TODO: This should never be null -- when is it?\n    if (bankForRegistrationName) {\n      var key = getDictionaryKey(inst);\n      delete bankForRegistrationName[key];\n    }\n  },\n\n  /**\n   * Deletes all listeners for the DOM element with the supplied ID.\n   *\n   * @param {object} inst The instance, which is the source of events.\n   */\n  deleteAllListeners: function (inst) {\n    var key = getDictionaryKey(inst);\n    for (var registrationName in listenerBank) {\n      if (!listenerBank.hasOwnProperty(registrationName)) {\n        continue;\n      }\n\n      if (!listenerBank[registrationName][key]) {\n        continue;\n      }\n\n      var PluginModule = EventPluginRegistry.registrationNameModules[registrationName];\n      if (PluginModule && PluginModule.willDeleteListener) {\n        PluginModule.willDeleteListener(inst, registrationName);\n      }\n\n      delete listenerBank[registrationName][key];\n    }\n  },\n\n  /**\n   * Allows registered plugins an opportunity to extract events from top-level\n   * native browser events.\n   *\n   * @return {*} An accumulation of synthetic events.\n   * @internal\n   */\n  extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget) {\n    var events;\n    var plugins = EventPluginRegistry.plugins;\n    for (var i = 0; i < plugins.length; i++) {\n      // Not every plugin in the ordering may be loaded at runtime.\n      var possiblePlugin = plugins[i];\n      if (possiblePlugin) {\n        var extractedEvents = possiblePlugin.extractEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget);\n        if (extractedEvents) {\n          events = accumulateInto(events, extractedEvents);\n        }\n      }\n    }\n    return events;\n  },\n\n  /**\n   * Enqueues a synthetic event that should be dispatched when\n   * `processEventQueue` is invoked.\n   *\n   * @param {*} events An accumulation of synthetic events.\n   * @internal\n   */\n  enqueueEvents: function (events) {\n    if (events) {\n      eventQueue = accumulateInto(eventQueue, events);\n    }\n  },\n\n  /**\n   * Dispatches all synthetic events on the event queue.\n   *\n   * @internal\n   */\n  processEventQueue: function (simulated) {\n    // Set `eventQueue` to null before processing it so that we can tell if more\n    // events get enqueued while processing.\n    var processingEventQueue = eventQueue;\n    eventQueue = null;\n    if (simulated) {\n      forEachAccumulated(processingEventQueue, executeDispatchesAndReleaseSimulated);\n    } else {\n      forEachAccumulated(processingEventQueue, executeDispatchesAndReleaseTopLevel);\n    }\n    !!eventQueue ?  true ? invariant(false, 'processEventQueue(): Additional events were enqueued while processing an event queue. Support for this has not yet been implemented.') : _prodInvariant('95') : void 0;\n    // This would be a good time to rethrow if any of the event handlers threw.\n    ReactErrorUtils.rethrowCaughtError();\n  },\n\n  /**\n   * These are needed for tests only. Do not use!\n   */\n  __purge: function () {\n    listenerBank = {};\n  },\n\n  __getListenerBank: function () {\n    return listenerBank;\n  }\n\n};\n\nmodule.exports = EventPluginHub;//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"215.js","sources":["/home/ubuntu/workspace/node_modules/react-dom/lib/EventPluginHub.js"],"sourcesContent":["/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n'use strict';\n\nvar _prodInvariant = require('./reactProdInvariant');\n\nvar EventPluginRegistry = require('./EventPluginRegistry');\nvar EventPluginUtils = require('./EventPluginUtils');\nvar ReactErrorUtils = require('./ReactErrorUtils');\n\nvar accumulateInto = require('./accumulateInto');\nvar forEachAccumulated = require('./forEachAccumulated');\nvar invariant = require('fbjs/lib/invariant');\n\n/**\n * Internal store for event listeners\n */\nvar listenerBank = {};\n\n/**\n * Internal queue of events that have accumulated their dispatches and are\n * waiting to have their dispatches executed.\n */\nvar eventQueue = null;\n\n/**\n * Dispatches an event and releases it back into the pool, unless persistent.\n *\n * @param {?object} event Synthetic event to be dispatched.\n * @param {boolean} simulated If the event is simulated (changes exn behavior)\n * @private\n */\nvar executeDispatchesAndRelease = function (event, simulated) {\n  if (event) {\n    EventPluginUtils.executeDispatchesInOrder(event, simulated);\n\n    if (!event.isPersistent()) {\n      event.constructor.release(event);\n    }\n  }\n};\nvar executeDispatchesAndReleaseSimulated = function (e) {\n  return executeDispatchesAndRelease(e, true);\n};\nvar executeDispatchesAndReleaseTopLevel = function (e) {\n  return executeDispatchesAndRelease(e, false);\n};\n\nvar getDictionaryKey = function (inst) {\n  // Prevents V8 performance issue:\n  // https://github.com/facebook/react/pull/7232\n  return '.' + inst._rootNodeID;\n};\n\nfunction isInteractive(tag) {\n  return tag === 'button' || tag === 'input' || tag === 'select' || tag === 'textarea';\n}\n\nfunction shouldPreventMouseEvent(name, type, props) {\n  switch (name) {\n    case 'onClick':\n    case 'onClickCapture':\n    case 'onDoubleClick':\n    case 'onDoubleClickCapture':\n    case 'onMouseDown':\n    case 'onMouseDownCapture':\n    case 'onMouseMove':\n    case 'onMouseMoveCapture':\n    case 'onMouseUp':\n    case 'onMouseUpCapture':\n      return !!(props.disabled && isInteractive(type));\n    default:\n      return false;\n  }\n}\n\n/**\n * This is a unified interface for event plugins to be installed and configured.\n *\n * Event plugins can implement the following properties:\n *\n *   `extractEvents` {function(string, DOMEventTarget, string, object): *}\n *     Required. When a top-level event is fired, this method is expected to\n *     extract synthetic events that will in turn be queued and dispatched.\n *\n *   `eventTypes` {object}\n *     Optional, plugins that fire events must publish a mapping of registration\n *     names that are used to register listeners. Values of this mapping must\n *     be objects that contain `registrationName` or `phasedRegistrationNames`.\n *\n *   `executeDispatch` {function(object, function, string)}\n *     Optional, allows plugins to override how an event gets dispatched. By\n *     default, the listener is simply invoked.\n *\n * Each plugin that is injected into `EventsPluginHub` is immediately operable.\n *\n * @public\n */\nvar EventPluginHub = {\n\n  /**\n   * Methods for injecting dependencies.\n   */\n  injection: {\n\n    /**\n     * @param {array} InjectedEventPluginOrder\n     * @public\n     */\n    injectEventPluginOrder: EventPluginRegistry.injectEventPluginOrder,\n\n    /**\n     * @param {object} injectedNamesToPlugins Map from names to plugin modules.\n     */\n    injectEventPluginsByName: EventPluginRegistry.injectEventPluginsByName\n\n  },\n\n  /**\n   * Stores `listener` at `listenerBank[registrationName][key]`. Is idempotent.\n   *\n   * @param {object} inst The instance, which is the source of events.\n   * @param {string} registrationName Name of listener (e.g. `onClick`).\n   * @param {function} listener The callback to store.\n   */\n  putListener: function (inst, registrationName, listener) {\n    !(typeof listener === 'function') ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Expected %s listener to be a function, instead got type %s', registrationName, typeof listener) : _prodInvariant('94', registrationName, typeof listener) : void 0;\n\n    var key = getDictionaryKey(inst);\n    var bankForRegistrationName = listenerBank[registrationName] || (listenerBank[registrationName] = {});\n    bankForRegistrationName[key] = listener;\n\n    var PluginModule = EventPluginRegistry.registrationNameModules[registrationName];\n    if (PluginModule && PluginModule.didPutListener) {\n      PluginModule.didPutListener(inst, registrationName, listener);\n    }\n  },\n\n  /**\n   * @param {object} inst The instance, which is the source of events.\n   * @param {string} registrationName Name of listener (e.g. `onClick`).\n   * @return {?function} The stored callback.\n   */\n  getListener: function (inst, registrationName) {\n    // TODO: shouldPreventMouseEvent is DOM-specific and definitely should not\n    // live here; needs to be moved to a better place soon\n    var bankForRegistrationName = listenerBank[registrationName];\n    if (shouldPreventMouseEvent(registrationName, inst._currentElement.type, inst._currentElement.props)) {\n      return null;\n    }\n    var key = getDictionaryKey(inst);\n    return bankForRegistrationName && bankForRegistrationName[key];\n  },\n\n  /**\n   * Deletes a listener from the registration bank.\n   *\n   * @param {object} inst The instance, which is the source of events.\n   * @param {string} registrationName Name of listener (e.g. `onClick`).\n   */\n  deleteListener: function (inst, registrationName) {\n    var PluginModule = EventPluginRegistry.registrationNameModules[registrationName];\n    if (PluginModule && PluginModule.willDeleteListener) {\n      PluginModule.willDeleteListener(inst, registrationName);\n    }\n\n    var bankForRegistrationName = listenerBank[registrationName];\n    // TODO: This should never be null -- when is it?\n    if (bankForRegistrationName) {\n      var key = getDictionaryKey(inst);\n      delete bankForRegistrationName[key];\n    }\n  },\n\n  /**\n   * Deletes all listeners for the DOM element with the supplied ID.\n   *\n   * @param {object} inst The instance, which is the source of events.\n   */\n  deleteAllListeners: function (inst) {\n    var key = getDictionaryKey(inst);\n    for (var registrationName in listenerBank) {\n      if (!listenerBank.hasOwnProperty(registrationName)) {\n        continue;\n      }\n\n      if (!listenerBank[registrationName][key]) {\n        continue;\n      }\n\n      var PluginModule = EventPluginRegistry.registrationNameModules[registrationName];\n      if (PluginModule && PluginModule.willDeleteListener) {\n        PluginModule.willDeleteListener(inst, registrationName);\n      }\n\n      delete listenerBank[registrationName][key];\n    }\n  },\n\n  /**\n   * Allows registered plugins an opportunity to extract events from top-level\n   * native browser events.\n   *\n   * @return {*} An accumulation of synthetic events.\n   * @internal\n   */\n  extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget) {\n    var events;\n    var plugins = EventPluginRegistry.plugins;\n    for (var i = 0; i < plugins.length; i++) {\n      // Not every plugin in the ordering may be loaded at runtime.\n      var possiblePlugin = plugins[i];\n      if (possiblePlugin) {\n        var extractedEvents = possiblePlugin.extractEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget);\n        if (extractedEvents) {\n          events = accumulateInto(events, extractedEvents);\n        }\n      }\n    }\n    return events;\n  },\n\n  /**\n   * Enqueues a synthetic event that should be dispatched when\n   * `processEventQueue` is invoked.\n   *\n   * @param {*} events An accumulation of synthetic events.\n   * @internal\n   */\n  enqueueEvents: function (events) {\n    if (events) {\n      eventQueue = accumulateInto(eventQueue, events);\n    }\n  },\n\n  /**\n   * Dispatches all synthetic events on the event queue.\n   *\n   * @internal\n   */\n  processEventQueue: function (simulated) {\n    // Set `eventQueue` to null before processing it so that we can tell if more\n    // events get enqueued while processing.\n    var processingEventQueue = eventQueue;\n    eventQueue = null;\n    if (simulated) {\n      forEachAccumulated(processingEventQueue, executeDispatchesAndReleaseSimulated);\n    } else {\n      forEachAccumulated(processingEventQueue, executeDispatchesAndReleaseTopLevel);\n    }\n    !!eventQueue ? 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Support for this has not yet been implemented.') : _prodInvariant('95') : void 0;\n    // This would be a good time to rethrow if any of the event handlers threw.\n    ReactErrorUtils.rethrowCaughtError();\n  },\n\n  /**\n   * These are needed for tests only. Do not use!\n   */\n  __purge: function () {\n    listenerBank = {};\n  },\n\n  __getListenerBank: function () {\n    return listenerBank;\n  }\n\n};\n\nmodule.exports = EventPluginHub;\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/react-dom/lib/EventPluginHub.js\n// module id = 215\n// module chunks = 0"],"mappings":"AAAA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA","sourceRoot":""}");

TODO found
Open

    eval("/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n'use strict';\n\nvar _prodInvariant = __webpack_require__(208),\n    _assign = __webpack_require__(176);\n\nvar DOMChildrenOperations = __webpack_require__(253);\nvar DOMLazyTree = __webpack_require__(254);\nvar ReactDOMComponentTree = __webpack_require__(207);\n\nvar escapeTextContentForBrowser = __webpack_require__(259);\nvar invariant = __webpack_require__(180);\nvar validateDOMNesting = __webpack_require__(309);\n\n/**\n * Text nodes violate a couple assumptions that React makes about components:\n *\n *  - When mounting text into the DOM, adjacent text nodes are merged.\n *  - Text nodes cannot be assigned a React root ID.\n *\n * This component is used to wrap strings between comment nodes so that they\n * can undergo the same reconciliation that is applied to elements.\n *\n * TODO: Investigate representing React components in the DOM with text nodes.\n *\n * @class ReactDOMTextComponent\n * @extends ReactComponent\n * @internal\n */\nvar ReactDOMTextComponent = function (text) {\n  // TODO: This is really a ReactText (ReactNode), not a ReactElement\n  this._currentElement = text;\n  this._stringText = '' + text;\n  // ReactDOMComponentTree uses these:\n  this._hostNode = null;\n  this._hostParent = null;\n\n  // Properties\n  this._domID = 0;\n  this._mountIndex = 0;\n  this._closingComment = null;\n  this._commentNodes = null;\n};\n\n_assign(ReactDOMTextComponent.prototype, {\n\n  /**\n   * Creates the markup for this text node. This node is not intended to have\n   * any features besides containing text content.\n   *\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @return {string} Markup for this text node.\n   * @internal\n   */\n  mountComponent: function (transaction, hostParent, hostContainerInfo, context) {\n    if (true) {\n      var parentInfo;\n      if (hostParent != null) {\n        parentInfo = hostParent._ancestorInfo;\n      } else if (hostContainerInfo != null) {\n        parentInfo = hostContainerInfo._ancestorInfo;\n      }\n      if (parentInfo) {\n        // parentInfo should always be present except for the top-level\n        // component when server rendering\n        validateDOMNesting(null, this._stringText, this, parentInfo);\n      }\n    }\n\n    var domID = hostContainerInfo._idCounter++;\n    var openingValue = ' react-text: ' + domID + ' ';\n    var closingValue = ' /react-text ';\n    this._domID = domID;\n    this._hostParent = hostParent;\n    if (transaction.useCreateElement) {\n      var ownerDocument = hostContainerInfo._ownerDocument;\n      var openingComment = ownerDocument.createComment(openingValue);\n      var closingComment = ownerDocument.createComment(closingValue);\n      var lazyTree = DOMLazyTree(ownerDocument.createDocumentFragment());\n      DOMLazyTree.queueChild(lazyTree, DOMLazyTree(openingComment));\n      if (this._stringText) {\n        DOMLazyTree.queueChild(lazyTree, DOMLazyTree(ownerDocument.createTextNode(this._stringText)));\n      }\n      DOMLazyTree.queueChild(lazyTree, DOMLazyTree(closingComment));\n      ReactDOMComponentTree.precacheNode(this, openingComment);\n      this._closingComment = closingComment;\n      return lazyTree;\n    } else {\n      var escapedText = escapeTextContentForBrowser(this._stringText);\n\n      if (transaction.renderToStaticMarkup) {\n        // Normally we'd wrap this between comment nodes for the reasons stated\n        // above, but since this is a situation where React won't take over\n        // (static pages), we can simply return the text as it is.\n        return escapedText;\n      }\n\n      return '<!--' + openingValue + '-->' + escapedText + '<!--' + closingValue + '-->';\n    }\n  },\n\n  /**\n   * Updates this component by updating the text content.\n   *\n   * @param {ReactText} nextText The next text content\n   * @param {ReactReconcileTransaction} transaction\n   * @internal\n   */\n  receiveComponent: function (nextText, transaction) {\n    if (nextText !== this._currentElement) {\n      this._currentElement = nextText;\n      var nextStringText = '' + nextText;\n      if (nextStringText !== this._stringText) {\n        // TODO: Save this as pending props and use performUpdateIfNecessary\n        // and/or updateComponent to do the actual update for consistency with\n        // other component types?\n        this._stringText = nextStringText;\n        var commentNodes = this.getHostNode();\n        DOMChildrenOperations.replaceDelimitedText(commentNodes[0], commentNodes[1], nextStringText);\n      }\n    }\n  },\n\n  getHostNode: function () {\n    var hostNode = this._commentNodes;\n    if (hostNode) {\n      return hostNode;\n    }\n    if (!this._closingComment) {\n      var openingComment = ReactDOMComponentTree.getNodeFromInstance(this);\n      var node = openingComment.nextSibling;\n      while (true) {\n        !(node != null) ?  true ? invariant(false, 'Missing closing comment for text component %s', this._domID) : _prodInvariant('67', this._domID) : void 0;\n        if (node.nodeType === 8 && node.nodeValue === ' /react-text ') {\n          this._closingComment = node;\n          break;\n        }\n        node = node.nextSibling;\n      }\n    }\n    hostNode = [this._hostNode, this._closingComment];\n    this._commentNodes = hostNode;\n    return hostNode;\n  },\n\n  unmountComponent: function () {\n    this._closingComment = null;\n    this._commentNodes = null;\n    ReactDOMComponentTree.uncacheNode(this);\n  }\n\n});\n\nmodule.exports = ReactDOMTextComponent;//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"312.js","sources":["/home/ubuntu/workspace/node_modules/react-dom/lib/ReactDOMTextComponent.js"],"sourcesContent":["/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n'use strict';\n\nvar _prodInvariant = require('./reactProdInvariant'),\n    _assign = require('object-assign');\n\nvar DOMChildrenOperations = require('./DOMChildrenOperations');\nvar DOMLazyTree = require('./DOMLazyTree');\nvar ReactDOMComponentTree = require('./ReactDOMComponentTree');\n\nvar escapeTextContentForBrowser = require('./escapeTextContentForBrowser');\nvar invariant = require('fbjs/lib/invariant');\nvar validateDOMNesting = require('./validateDOMNesting');\n\n/**\n * Text nodes violate a couple assumptions that React makes about components:\n *\n *  - When mounting text into the DOM, adjacent text nodes are merged.\n *  - Text nodes cannot be assigned a React root ID.\n *\n * This component is used to wrap strings between comment nodes so that they\n * can undergo the same reconciliation that is applied to elements.\n *\n * TODO: Investigate representing React components in the DOM with text nodes.\n *\n * @class ReactDOMTextComponent\n * @extends ReactComponent\n * @internal\n */\nvar ReactDOMTextComponent = function (text) {\n  // TODO: This is really a ReactText (ReactNode), not a ReactElement\n  this._currentElement = text;\n  this._stringText = '' + text;\n  // ReactDOMComponentTree uses these:\n  this._hostNode = null;\n  this._hostParent = null;\n\n  // Properties\n  this._domID = 0;\n  this._mountIndex = 0;\n  this._closingComment = null;\n  this._commentNodes = null;\n};\n\n_assign(ReactDOMTextComponent.prototype, {\n\n  /**\n   * Creates the markup for this text node. This node is not intended to have\n   * any features besides containing text content.\n   *\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @return {string} Markup for this text node.\n   * @internal\n   */\n  mountComponent: function (transaction, hostParent, hostContainerInfo, context) {\n    if (process.env.NODE_ENV !== 'production') {\n      var parentInfo;\n      if (hostParent != null) {\n        parentInfo = hostParent._ancestorInfo;\n      } else if (hostContainerInfo != null) {\n        parentInfo = hostContainerInfo._ancestorInfo;\n      }\n      if (parentInfo) {\n        // parentInfo should always be present except for the top-level\n        // component when server rendering\n        validateDOMNesting(null, this._stringText, this, parentInfo);\n      }\n    }\n\n    var domID = hostContainerInfo._idCounter++;\n    var openingValue = ' react-text: ' + domID + ' ';\n    var closingValue = ' /react-text ';\n    this._domID = domID;\n    this._hostParent = hostParent;\n    if (transaction.useCreateElement) {\n      var ownerDocument = hostContainerInfo._ownerDocument;\n      var openingComment = ownerDocument.createComment(openingValue);\n      var closingComment = ownerDocument.createComment(closingValue);\n      var lazyTree = DOMLazyTree(ownerDocument.createDocumentFragment());\n      DOMLazyTree.queueChild(lazyTree, DOMLazyTree(openingComment));\n      if (this._stringText) {\n        DOMLazyTree.queueChild(lazyTree, DOMLazyTree(ownerDocument.createTextNode(this._stringText)));\n      }\n      DOMLazyTree.queueChild(lazyTree, DOMLazyTree(closingComment));\n      ReactDOMComponentTree.precacheNode(this, openingComment);\n      this._closingComment = closingComment;\n      return lazyTree;\n    } else {\n      var escapedText = escapeTextContentForBrowser(this._stringText);\n\n      if (transaction.renderToStaticMarkup) {\n        // Normally we'd wrap this between comment nodes for the reasons stated\n        // above, but since this is a situation where React won't take over\n        // (static pages), we can simply return the text as it is.\n        return escapedText;\n      }\n\n      return '<!--' + openingValue + '-->' + escapedText + '<!--' + closingValue + '-->';\n    }\n  },\n\n  /**\n   * Updates this component by updating the text content.\n   *\n   * @param {ReactText} nextText The next text content\n   * @param {ReactReconcileTransaction} transaction\n   * @internal\n   */\n  receiveComponent: function (nextText, transaction) {\n    if (nextText !== this._currentElement) {\n      this._currentElement = nextText;\n      var nextStringText = '' + nextText;\n      if (nextStringText !== this._stringText) {\n        // TODO: Save this as pending props and use performUpdateIfNecessary\n        // and/or updateComponent to do the actual update for consistency with\n        // other component types?\n        this._stringText = nextStringText;\n        var commentNodes = this.getHostNode();\n        DOMChildrenOperations.replaceDelimitedText(commentNodes[0], commentNodes[1], nextStringText);\n      }\n    }\n  },\n\n  getHostNode: function () {\n    var hostNode = this._commentNodes;\n    if (hostNode) {\n      return hostNode;\n    }\n    if (!this._closingComment) {\n      var openingComment = ReactDOMComponentTree.getNodeFromInstance(this);\n      var node = openingComment.nextSibling;\n      while (true) {\n        !(node != null) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Missing closing comment for text component %s', this._domID) : _prodInvariant('67', this._domID) : void 0;\n        if (node.nodeType === 8 && node.nodeValue === ' /react-text ') {\n          this._closingComment = node;\n          break;\n        }\n        node = node.nextSibling;\n      }\n    }\n    hostNode = [this._hostNode, this._closingComment];\n    this._commentNodes = hostNode;\n    return hostNode;\n  },\n\n  unmountComponent: function () {\n    this._closingComment = null;\n    this._commentNodes = null;\n    ReactDOMComponentTree.uncacheNode(this);\n  }\n\n});\n\nmodule.exports = ReactDOMTextComponent;\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/react-dom/lib/ReactDOMTextComponent.js\n// module id = 312\n// module chunks = 0"],"mappings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sourceRoot":""}");

TODO found
Open

    eval("/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n'use strict';\n\nvar _prodInvariant = __webpack_require__(208),\n    _assign = __webpack_require__(176);\n\nvar DOMChildrenOperations = __webpack_require__(253);\nvar DOMLazyTree = __webpack_require__(254);\nvar ReactDOMComponentTree = __webpack_require__(207);\n\nvar escapeTextContentForBrowser = __webpack_require__(259);\nvar invariant = __webpack_require__(180);\nvar validateDOMNesting = __webpack_require__(309);\n\n/**\n * Text nodes violate a couple assumptions that React makes about components:\n *\n *  - When mounting text into the DOM, adjacent text nodes are merged.\n *  - Text nodes cannot be assigned a React root ID.\n *\n * This component is used to wrap strings between comment nodes so that they\n * can undergo the same reconciliation that is applied to elements.\n *\n * TODO: Investigate representing React components in the DOM with text nodes.\n *\n * @class ReactDOMTextComponent\n * @extends ReactComponent\n * @internal\n */\nvar ReactDOMTextComponent = function (text) {\n  // TODO: This is really a ReactText (ReactNode), not a ReactElement\n  this._currentElement = text;\n  this._stringText = '' + text;\n  // ReactDOMComponentTree uses these:\n  this._hostNode = null;\n  this._hostParent = null;\n\n  // Properties\n  this._domID = 0;\n  this._mountIndex = 0;\n  this._closingComment = null;\n  this._commentNodes = null;\n};\n\n_assign(ReactDOMTextComponent.prototype, {\n\n  /**\n   * Creates the markup for this text node. This node is not intended to have\n   * any features besides containing text content.\n   *\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @return {string} Markup for this text node.\n   * @internal\n   */\n  mountComponent: function (transaction, hostParent, hostContainerInfo, context) {\n    if (true) {\n      var parentInfo;\n      if (hostParent != null) {\n        parentInfo = hostParent._ancestorInfo;\n      } else if (hostContainerInfo != null) {\n        parentInfo = hostContainerInfo._ancestorInfo;\n      }\n      if (parentInfo) {\n        // parentInfo should always be present except for the top-level\n        // component when server rendering\n        validateDOMNesting(null, this._stringText, this, parentInfo);\n      }\n    }\n\n    var domID = hostContainerInfo._idCounter++;\n    var openingValue = ' react-text: ' + domID + ' ';\n    var closingValue = ' /react-text ';\n    this._domID = domID;\n    this._hostParent = hostParent;\n    if (transaction.useCreateElement) {\n      var ownerDocument = hostContainerInfo._ownerDocument;\n      var openingComment = ownerDocument.createComment(openingValue);\n      var closingComment = ownerDocument.createComment(closingValue);\n      var lazyTree = DOMLazyTree(ownerDocument.createDocumentFragment());\n      DOMLazyTree.queueChild(lazyTree, DOMLazyTree(openingComment));\n      if (this._stringText) {\n        DOMLazyTree.queueChild(lazyTree, DOMLazyTree(ownerDocument.createTextNode(this._stringText)));\n      }\n      DOMLazyTree.queueChild(lazyTree, DOMLazyTree(closingComment));\n      ReactDOMComponentTree.precacheNode(this, openingComment);\n      this._closingComment = closingComment;\n      return lazyTree;\n    } else {\n      var escapedText = escapeTextContentForBrowser(this._stringText);\n\n      if (transaction.renderToStaticMarkup) {\n        // Normally we'd wrap this between comment nodes for the reasons stated\n        // above, but since this is a situation where React won't take over\n        // (static pages), we can simply return the text as it is.\n        return escapedText;\n      }\n\n      return '<!--' + openingValue + '-->' + escapedText + '<!--' + closingValue + '-->';\n    }\n  },\n\n  /**\n   * Updates this component by updating the text content.\n   *\n   * @param {ReactText} nextText The next text content\n   * @param {ReactReconcileTransaction} transaction\n   * @internal\n   */\n  receiveComponent: function (nextText, transaction) {\n    if (nextText !== this._currentElement) {\n      this._currentElement = nextText;\n      var nextStringText = '' + nextText;\n      if (nextStringText !== this._stringText) {\n        // TODO: Save this as pending props and use performUpdateIfNecessary\n        // and/or updateComponent to do the actual update for consistency with\n        // other component types?\n        this._stringText = nextStringText;\n        var commentNodes = this.getHostNode();\n        DOMChildrenOperations.replaceDelimitedText(commentNodes[0], commentNodes[1], nextStringText);\n      }\n    }\n  },\n\n  getHostNode: function () {\n    var hostNode = this._commentNodes;\n    if (hostNode) {\n      return hostNode;\n    }\n    if (!this._closingComment) {\n      var openingComment = ReactDOMComponentTree.getNodeFromInstance(this);\n      var node = openingComment.nextSibling;\n      while (true) {\n        !(node != null) ?  true ? invariant(false, 'Missing closing comment for text component %s', this._domID) : _prodInvariant('67', this._domID) : void 0;\n        if (node.nodeType === 8 && node.nodeValue === ' /react-text ') {\n          this._closingComment = node;\n          break;\n        }\n        node = node.nextSibling;\n      }\n    }\n    hostNode = [this._hostNode, this._closingComment];\n    this._commentNodes = hostNode;\n    return hostNode;\n  },\n\n  unmountComponent: function () {\n    this._closingComment = null;\n    this._commentNodes = null;\n    ReactDOMComponentTree.uncacheNode(this);\n  }\n\n});\n\nmodule.exports = ReactDOMTextComponent;//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"312.js","sources":["/home/ubuntu/workspace/node_modules/react-dom/lib/ReactDOMTextComponent.js"],"sourcesContent":["/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n'use strict';\n\nvar _prodInvariant = require('./reactProdInvariant'),\n    _assign = require('object-assign');\n\nvar DOMChildrenOperations = require('./DOMChildrenOperations');\nvar DOMLazyTree = require('./DOMLazyTree');\nvar ReactDOMComponentTree = require('./ReactDOMComponentTree');\n\nvar escapeTextContentForBrowser = require('./escapeTextContentForBrowser');\nvar invariant = require('fbjs/lib/invariant');\nvar validateDOMNesting = require('./validateDOMNesting');\n\n/**\n * Text nodes violate a couple assumptions that React makes about components:\n *\n *  - When mounting text into the DOM, adjacent text nodes are merged.\n *  - Text nodes cannot be assigned a React root ID.\n *\n * This component is used to wrap strings between comment nodes so that they\n * can undergo the same reconciliation that is applied to elements.\n *\n * TODO: Investigate representing React components in the DOM with text nodes.\n *\n * @class ReactDOMTextComponent\n * @extends ReactComponent\n * @internal\n */\nvar ReactDOMTextComponent = function (text) {\n  // TODO: This is really a ReactText (ReactNode), not a ReactElement\n  this._currentElement = text;\n  this._stringText = '' + text;\n  // ReactDOMComponentTree uses these:\n  this._hostNode = null;\n  this._hostParent = null;\n\n  // Properties\n  this._domID = 0;\n  this._mountIndex = 0;\n  this._closingComment = null;\n  this._commentNodes = null;\n};\n\n_assign(ReactDOMTextComponent.prototype, {\n\n  /**\n   * Creates the markup for this text node. This node is not intended to have\n   * any features besides containing text content.\n   *\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @return {string} Markup for this text node.\n   * @internal\n   */\n  mountComponent: function (transaction, hostParent, hostContainerInfo, context) {\n    if (process.env.NODE_ENV !== 'production') {\n      var parentInfo;\n      if (hostParent != null) {\n        parentInfo = hostParent._ancestorInfo;\n      } else if (hostContainerInfo != null) {\n        parentInfo = hostContainerInfo._ancestorInfo;\n      }\n      if (parentInfo) {\n        // parentInfo should always be present except for the top-level\n        // component when server rendering\n        validateDOMNesting(null, this._stringText, this, parentInfo);\n      }\n    }\n\n    var domID = hostContainerInfo._idCounter++;\n    var openingValue = ' react-text: ' + domID + ' ';\n    var closingValue = ' /react-text ';\n    this._domID = domID;\n    this._hostParent = hostParent;\n    if (transaction.useCreateElement) {\n      var ownerDocument = hostContainerInfo._ownerDocument;\n      var openingComment = ownerDocument.createComment(openingValue);\n      var closingComment = ownerDocument.createComment(closingValue);\n      var lazyTree = DOMLazyTree(ownerDocument.createDocumentFragment());\n      DOMLazyTree.queueChild(lazyTree, DOMLazyTree(openingComment));\n      if (this._stringText) {\n        DOMLazyTree.queueChild(lazyTree, DOMLazyTree(ownerDocument.createTextNode(this._stringText)));\n      }\n      DOMLazyTree.queueChild(lazyTree, DOMLazyTree(closingComment));\n      ReactDOMComponentTree.precacheNode(this, openingComment);\n      this._closingComment = closingComment;\n      return lazyTree;\n    } else {\n      var escapedText = escapeTextContentForBrowser(this._stringText);\n\n      if (transaction.renderToStaticMarkup) {\n        // Normally we'd wrap this between comment nodes for the reasons stated\n        // above, but since this is a situation where React won't take over\n        // (static pages), we can simply return the text as it is.\n        return escapedText;\n      }\n\n      return '<!--' + openingValue + '-->' + escapedText + '<!--' + closingValue + '-->';\n    }\n  },\n\n  /**\n   * Updates this component by updating the text content.\n   *\n   * @param {ReactText} nextText The next text content\n   * @param {ReactReconcileTransaction} transaction\n   * @internal\n   */\n  receiveComponent: function (nextText, transaction) {\n    if (nextText !== this._currentElement) {\n      this._currentElement = nextText;\n      var nextStringText = '' + nextText;\n      if (nextStringText !== this._stringText) {\n        // TODO: Save this as pending props and use performUpdateIfNecessary\n        // and/or updateComponent to do the actual update for consistency with\n        // other component types?\n        this._stringText = nextStringText;\n        var commentNodes = this.getHostNode();\n        DOMChildrenOperations.replaceDelimitedText(commentNodes[0], commentNodes[1], nextStringText);\n      }\n    }\n  },\n\n  getHostNode: function () {\n    var hostNode = this._commentNodes;\n    if (hostNode) {\n      return hostNode;\n    }\n    if (!this._closingComment) {\n      var openingComment = ReactDOMComponentTree.getNodeFromInstance(this);\n      var node = openingComment.nextSibling;\n      while (true) {\n        !(node != null) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Missing closing comment for text component %s', this._domID) : _prodInvariant('67', this._domID) : void 0;\n        if (node.nodeType === 8 && node.nodeValue === ' /react-text ') {\n          this._closingComment = node;\n          break;\n        }\n        node = node.nextSibling;\n      }\n    }\n    hostNode = [this._hostNode, this._closingComment];\n    this._commentNodes = hostNode;\n    return hostNode;\n  },\n\n  unmountComponent: function () {\n    this._closingComment = null;\n    this._commentNodes = null;\n    ReactDOMComponentTree.uncacheNode(this);\n  }\n\n});\n\nmodule.exports = ReactDOMTextComponent;\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/react-dom/lib/ReactDOMTextComponent.js\n// module id = 312\n// module chunks = 0"],"mappings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sourceRoot":""}");

TODO found
Open

    eval("/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n * \n */\n\n'use strict';\n\nvar _prodInvariant = __webpack_require__(208);\n\nvar EventListener = __webpack_require__(315);\nvar EventPropagators = __webpack_require__(214);\nvar ReactDOMComponentTree = __webpack_require__(207);\nvar SyntheticAnimationEvent = __webpack_require__(329);\nvar SyntheticClipboardEvent = __webpack_require__(330);\nvar SyntheticEvent = __webpack_require__(226);\nvar SyntheticFocusEvent = __webpack_require__(331);\nvar SyntheticKeyboardEvent = __webpack_require__(332);\nvar SyntheticMouseEvent = __webpack_require__(247);\nvar SyntheticDragEvent = __webpack_require__(335);\nvar SyntheticTouchEvent = __webpack_require__(336);\nvar SyntheticTransitionEvent = __webpack_require__(337);\nvar SyntheticUIEvent = __webpack_require__(248);\nvar SyntheticWheelEvent = __webpack_require__(338);\n\nvar emptyFunction = __webpack_require__(184);\nvar getEventCharCode = __webpack_require__(333);\nvar invariant = __webpack_require__(180);\n\n/**\n * Turns\n * ['abort', ...]\n * into\n * eventTypes = {\n *   'abort': {\n *     phasedRegistrationNames: {\n *       bubbled: 'onAbort',\n *       captured: 'onAbortCapture',\n *     },\n *     dependencies: ['topAbort'],\n *   },\n *   ...\n * };\n * topLevelEventsToDispatchConfig = {\n *   'topAbort': { sameConfig }\n * };\n */\nvar eventTypes = {};\nvar topLevelEventsToDispatchConfig = {};\n['abort', 'animationEnd', 'animationIteration', 'animationStart', 'blur', 'canPlay', 'canPlayThrough', 'click', 'contextMenu', 'copy', 'cut', 'doubleClick', 'drag', 'dragEnd', 'dragEnter', 'dragExit', 'dragLeave', 'dragOver', 'dragStart', 'drop', 'durationChange', 'emptied', 'encrypted', 'ended', 'error', 'focus', 'input', 'invalid', 'keyDown', 'keyPress', 'keyUp', 'load', 'loadedData', 'loadedMetadata', 'loadStart', 'mouseDown', 'mouseMove', 'mouseOut', 'mouseOver', 'mouseUp', 'paste', 'pause', 'play', 'playing', 'progress', 'rateChange', 'reset', 'scroll', 'seeked', 'seeking', 'stalled', 'submit', 'suspend', 'timeUpdate', 'touchCancel', 'touchEnd', 'touchMove', 'touchStart', 'transitionEnd', 'volumeChange', 'waiting', 'wheel'].forEach(function (event) {\n  var capitalizedEvent = event[0].toUpperCase() + event.slice(1);\n  var onEvent = 'on' + capitalizedEvent;\n  var topEvent = 'top' + capitalizedEvent;\n\n  var type = {\n    phasedRegistrationNames: {\n      bubbled: onEvent,\n      captured: onEvent + 'Capture'\n    },\n    dependencies: [topEvent]\n  };\n  eventTypes[event] = type;\n  topLevelEventsToDispatchConfig[topEvent] = type;\n});\n\nvar onClickListeners = {};\n\nfunction getDictionaryKey(inst) {\n  // Prevents V8 performance issue:\n  // https://github.com/facebook/react/pull/7232\n  return '.' + inst._rootNodeID;\n}\n\nfunction isInteractive(tag) {\n  return tag === 'button' || tag === 'input' || tag === 'select' || tag === 'textarea';\n}\n\nvar SimpleEventPlugin = {\n\n  eventTypes: eventTypes,\n\n  extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget) {\n    var dispatchConfig = topLevelEventsToDispatchConfig[topLevelType];\n    if (!dispatchConfig) {\n      return null;\n    }\n    var EventConstructor;\n    switch (topLevelType) {\n      case 'topAbort':\n      case 'topCanPlay':\n      case 'topCanPlayThrough':\n      case 'topDurationChange':\n      case 'topEmptied':\n      case 'topEncrypted':\n      case 'topEnded':\n      case 'topError':\n      case 'topInput':\n      case 'topInvalid':\n      case 'topLoad':\n      case 'topLoadedData':\n      case 'topLoadedMetadata':\n      case 'topLoadStart':\n      case 'topPause':\n      case 'topPlay':\n      case 'topPlaying':\n      case 'topProgress':\n      case 'topRateChange':\n      case 'topReset':\n      case 'topSeeked':\n      case 'topSeeking':\n      case 'topStalled':\n      case 'topSubmit':\n      case 'topSuspend':\n      case 'topTimeUpdate':\n      case 'topVolumeChange':\n      case 'topWaiting':\n        // HTML Events\n        // @see http://www.w3.org/TR/html5/index.html#events-0\n        EventConstructor = SyntheticEvent;\n        break;\n      case 'topKeyPress':\n        // Firefox creates a keypress event for function keys too. This removes\n        // the unwanted keypress events. Enter is however both printable and\n        // non-printable. One would expect Tab to be as well (but it isn't).\n        if (getEventCharCode(nativeEvent) === 0) {\n          return null;\n        }\n      /* falls through */\n      case 'topKeyDown':\n      case 'topKeyUp':\n        EventConstructor = SyntheticKeyboardEvent;\n        break;\n      case 'topBlur':\n      case 'topFocus':\n        EventConstructor = SyntheticFocusEvent;\n        break;\n      case 'topClick':\n        // Firefox creates a click event on right mouse clicks. This removes the\n        // unwanted click events.\n        if (nativeEvent.button === 2) {\n          return null;\n        }\n      /* falls through */\n      case 'topDoubleClick':\n      case 'topMouseDown':\n      case 'topMouseMove':\n      case 'topMouseUp':\n      // TODO: Disabled elements should not respond to mouse events\n      /* falls through */\n      case 'topMouseOut':\n      case 'topMouseOver':\n      case 'topContextMenu':\n        EventConstructor = SyntheticMouseEvent;\n        break;\n      case 'topDrag':\n      case 'topDragEnd':\n      case 'topDragEnter':\n      case 'topDragExit':\n      case 'topDragLeave':\n      case 'topDragOver':\n      case 'topDragStart':\n      case 'topDrop':\n        EventConstructor = SyntheticDragEvent;\n        break;\n      case 'topTouchCancel':\n      case 'topTouchEnd':\n      case 'topTouchMove':\n      case 'topTouchStart':\n        EventConstructor = SyntheticTouchEvent;\n        break;\n      case 'topAnimationEnd':\n      case 'topAnimationIteration':\n      case 'topAnimationStart':\n        EventConstructor = SyntheticAnimationEvent;\n        break;\n      case 'topTransitionEnd':\n        EventConstructor = SyntheticTransitionEvent;\n        break;\n      case 'topScroll':\n        EventConstructor = SyntheticUIEvent;\n        break;\n      case 'topWheel':\n        EventConstructor = SyntheticWheelEvent;\n        break;\n      case 'topCopy':\n      case 'topCut':\n      case 'topPaste':\n        EventConstructor = SyntheticClipboardEvent;\n        break;\n    }\n    !EventConstructor ?  true ? invariant(false, 'SimpleEventPlugin: Unhandled event type, `%s`.', topLevelType) : _prodInvariant('86', topLevelType) : void 0;\n    var event = EventConstructor.getPooled(dispatchConfig, targetInst, nativeEvent, nativeEventTarget);\n    EventPropagators.accumulateTwoPhaseDispatches(event);\n    return event;\n  },\n\n  didPutListener: function (inst, registrationName, listener) {\n    // Mobile Safari does not fire properly bubble click events on\n    // non-interactive elements, which means delegated click listeners do not\n    // fire. The workaround for this bug involves attaching an empty click\n    // listener on the target node.\n    // http://www.quirksmode.org/blog/archives/2010/09/click_event_del.html\n    if (registrationName === 'onClick' && !isInteractive(inst._tag)) {\n      var key = getDictionaryKey(inst);\n      var node = ReactDOMComponentTree.getNodeFromInstance(inst);\n      if (!onClickListeners[key]) {\n        onClickListeners[key] = EventListener.listen(node, 'click', emptyFunction);\n      }\n    }\n  },\n\n  willDeleteListener: function (inst, registrationName) {\n    if (registrationName === 'onClick' && !isInteractive(inst._tag)) {\n      var key = getDictionaryKey(inst);\n      onClickListeners[key].remove();\n      delete onClickListeners[key];\n    }\n  }\n\n};\n\nmodule.exports = SimpleEventPlugin;//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"328.js","sources":["/home/ubuntu/workspace/node_modules/react-dom/lib/SimpleEventPlugin.js"],"sourcesContent":["/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n * \n */\n\n'use strict';\n\nvar _prodInvariant = require('./reactProdInvariant');\n\nvar EventListener = require('fbjs/lib/EventListener');\nvar EventPropagators = require('./EventPropagators');\nvar ReactDOMComponentTree = require('./ReactDOMComponentTree');\nvar SyntheticAnimationEvent = require('./SyntheticAnimationEvent');\nvar SyntheticClipboardEvent = require('./SyntheticClipboardEvent');\nvar SyntheticEvent = require('./SyntheticEvent');\nvar SyntheticFocusEvent = require('./SyntheticFocusEvent');\nvar SyntheticKeyboardEvent = require('./SyntheticKeyboardEvent');\nvar SyntheticMouseEvent = require('./SyntheticMouseEvent');\nvar SyntheticDragEvent = require('./SyntheticDragEvent');\nvar SyntheticTouchEvent = require('./SyntheticTouchEvent');\nvar SyntheticTransitionEvent = require('./SyntheticTransitionEvent');\nvar SyntheticUIEvent = require('./SyntheticUIEvent');\nvar SyntheticWheelEvent = require('./SyntheticWheelEvent');\n\nvar emptyFunction = require('fbjs/lib/emptyFunction');\nvar getEventCharCode = require('./getEventCharCode');\nvar invariant = require('fbjs/lib/invariant');\n\n/**\n * Turns\n * ['abort', ...]\n * into\n * eventTypes = {\n *   'abort': {\n *     phasedRegistrationNames: {\n *       bubbled: 'onAbort',\n *       captured: 'onAbortCapture',\n *     },\n *     dependencies: ['topAbort'],\n *   },\n *   ...\n * };\n * topLevelEventsToDispatchConfig = {\n *   'topAbort': { sameConfig }\n * };\n */\nvar eventTypes = {};\nvar topLevelEventsToDispatchConfig = {};\n['abort', 'animationEnd', 'animationIteration', 'animationStart', 'blur', 'canPlay', 'canPlayThrough', 'click', 'contextMenu', 'copy', 'cut', 'doubleClick', 'drag', 'dragEnd', 'dragEnter', 'dragExit', 'dragLeave', 'dragOver', 'dragStart', 'drop', 'durationChange', 'emptied', 'encrypted', 'ended', 'error', 'focus', 'input', 'invalid', 'keyDown', 'keyPress', 'keyUp', 'load', 'loadedData', 'loadedMetadata', 'loadStart', 'mouseDown', 'mouseMove', 'mouseOut', 'mouseOver', 'mouseUp', 'paste', 'pause', 'play', 'playing', 'progress', 'rateChange', 'reset', 'scroll', 'seeked', 'seeking', 'stalled', 'submit', 'suspend', 'timeUpdate', 'touchCancel', 'touchEnd', 'touchMove', 'touchStart', 'transitionEnd', 'volumeChange', 'waiting', 'wheel'].forEach(function (event) {\n  var capitalizedEvent = event[0].toUpperCase() + event.slice(1);\n  var onEvent = 'on' + capitalizedEvent;\n  var topEvent = 'top' + capitalizedEvent;\n\n  var type = {\n    phasedRegistrationNames: {\n      bubbled: onEvent,\n      captured: onEvent + 'Capture'\n    },\n    dependencies: [topEvent]\n  };\n  eventTypes[event] = type;\n  topLevelEventsToDispatchConfig[topEvent] = type;\n});\n\nvar onClickListeners = {};\n\nfunction getDictionaryKey(inst) {\n  // Prevents V8 performance issue:\n  // https://github.com/facebook/react/pull/7232\n  return '.' + inst._rootNodeID;\n}\n\nfunction isInteractive(tag) {\n  return tag === 'button' || tag === 'input' || tag === 'select' || tag === 'textarea';\n}\n\nvar SimpleEventPlugin = {\n\n  eventTypes: eventTypes,\n\n  extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget) {\n    var dispatchConfig = topLevelEventsToDispatchConfig[topLevelType];\n    if (!dispatchConfig) {\n      return null;\n    }\n    var EventConstructor;\n    switch (topLevelType) {\n      case 'topAbort':\n      case 'topCanPlay':\n      case 'topCanPlayThrough':\n      case 'topDurationChange':\n      case 'topEmptied':\n      case 'topEncrypted':\n      case 'topEnded':\n      case 'topError':\n      case 'topInput':\n      case 'topInvalid':\n      case 'topLoad':\n      case 'topLoadedData':\n      case 'topLoadedMetadata':\n      case 'topLoadStart':\n      case 'topPause':\n      case 'topPlay':\n      case 'topPlaying':\n      case 'topProgress':\n      case 'topRateChange':\n      case 'topReset':\n      case 'topSeeked':\n      case 'topSeeking':\n      case 'topStalled':\n      case 'topSubmit':\n      case 'topSuspend':\n      case 'topTimeUpdate':\n      case 'topVolumeChange':\n      case 'topWaiting':\n        // HTML Events\n        // @see http://www.w3.org/TR/html5/index.html#events-0\n        EventConstructor = SyntheticEvent;\n        break;\n      case 'topKeyPress':\n        // Firefox creates a keypress event for function keys too. This removes\n        // the unwanted keypress events. Enter is however both printable and\n        // non-printable. One would expect Tab to be as well (but it isn't).\n        if (getEventCharCode(nativeEvent) === 0) {\n          return null;\n        }\n      /* falls through */\n      case 'topKeyDown':\n      case 'topKeyUp':\n        EventConstructor = SyntheticKeyboardEvent;\n        break;\n      case 'topBlur':\n      case 'topFocus':\n        EventConstructor = SyntheticFocusEvent;\n        break;\n      case 'topClick':\n        // Firefox creates a click event on right mouse clicks. This removes the\n        // unwanted click events.\n        if (nativeEvent.button === 2) {\n          return null;\n        }\n      /* falls through */\n      case 'topDoubleClick':\n      case 'topMouseDown':\n      case 'topMouseMove':\n      case 'topMouseUp':\n      // TODO: Disabled elements should not respond to mouse events\n      /* falls through */\n      case 'topMouseOut':\n      case 'topMouseOver':\n      case 'topContextMenu':\n        EventConstructor = SyntheticMouseEvent;\n        break;\n      case 'topDrag':\n      case 'topDragEnd':\n      case 'topDragEnter':\n      case 'topDragExit':\n      case 'topDragLeave':\n      case 'topDragOver':\n      case 'topDragStart':\n      case 'topDrop':\n        EventConstructor = SyntheticDragEvent;\n        break;\n      case 'topTouchCancel':\n      case 'topTouchEnd':\n      case 'topTouchMove':\n      case 'topTouchStart':\n        EventConstructor = SyntheticTouchEvent;\n        break;\n      case 'topAnimationEnd':\n      case 'topAnimationIteration':\n      case 'topAnimationStart':\n        EventConstructor = SyntheticAnimationEvent;\n        break;\n      case 'topTransitionEnd':\n        EventConstructor = SyntheticTransitionEvent;\n        break;\n      case 'topScroll':\n        EventConstructor = SyntheticUIEvent;\n        break;\n      case 'topWheel':\n        EventConstructor = SyntheticWheelEvent;\n        break;\n      case 'topCopy':\n      case 'topCut':\n      case 'topPaste':\n        EventConstructor = SyntheticClipboardEvent;\n        break;\n    }\n    !EventConstructor ? process.env.NODE_ENV !== 'production' ? invariant(false, 'SimpleEventPlugin: Unhandled event type, `%s`.', topLevelType) : _prodInvariant('86', topLevelType) : void 0;\n    var event = EventConstructor.getPooled(dispatchConfig, targetInst, nativeEvent, nativeEventTarget);\n    EventPropagators.accumulateTwoPhaseDispatches(event);\n    return event;\n  },\n\n  didPutListener: function (inst, registrationName, listener) {\n    // Mobile Safari does not fire properly bubble click events on\n    // non-interactive elements, which means delegated click listeners do not\n    // fire. The workaround for this bug involves attaching an empty click\n    // listener on the target node.\n    // http://www.quirksmode.org/blog/archives/2010/09/click_event_del.html\n    if (registrationName === 'onClick' && !isInteractive(inst._tag)) {\n      var key = getDictionaryKey(inst);\n      var node = ReactDOMComponentTree.getNodeFromInstance(inst);\n      if (!onClickListeners[key]) {\n        onClickListeners[key] = EventListener.listen(node, 'click', emptyFunction);\n      }\n    }\n  },\n\n  willDeleteListener: function (inst, registrationName) {\n    if (registrationName === 'onClick' && !isInteractive(inst._tag)) {\n      var key = getDictionaryKey(inst);\n      onClickListeners[key].remove();\n      delete onClickListeners[key];\n    }\n  }\n\n};\n\nmodule.exports = SimpleEventPlugin;\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/react-dom/lib/SimpleEventPlugin.js\n// module id = 328\n// module chunks = 0"],"mappings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sourceRoot":""}");

TODO found
Open

    eval("var entityMap = __webpack_require__(421),\n    legacyMap = __webpack_require__(423),\n    xmlMap    = __webpack_require__(420),\n    decodeCodePoint = __webpack_require__(424);\n\nvar decodeXMLStrict  = getStrictDecoder(xmlMap),\n    decodeHTMLStrict = getStrictDecoder(entityMap);\n\nfunction getStrictDecoder(map){\n\tvar keys = Object.keys(map).join(\"|\"),\n\t    replace = getReplacer(map);\n\n\tkeys += \"|#[xX][\\\\da-fA-F]+|#\\\\d+\";\n\n\tvar re = new RegExp(\"&(?:\" + keys + \");\", \"g\");\n\n\treturn function(str){\n\t\treturn String(str).replace(re, replace);\n\t};\n}\n\nvar decodeHTML = (function(){\n\tvar legacy = Object.keys(legacyMap)\n\t\t.sort(sorter);\n\n\tvar keys = Object.keys(entityMap)\n\t\t.sort(sorter);\n\n\tfor(var i = 0, j = 0; i < keys.length; i++){\n\t\tif(legacy[j] === keys[i]){\n\t\t\tkeys[i] += \";?\";\n\t\t\tj++;\n\t\t} else {\n\t\t\tkeys[i] += \";\";\n\t\t}\n\t}\n\n\tvar re = new RegExp(\"&(?:\" + keys.join(\"|\") + \"|#[xX][\\\\da-fA-F]+;?|#\\\\d+;?)\", \"g\"),\n\t    replace = getReplacer(entityMap);\n\n\tfunction replacer(str){\n\t\tif(str.substr(-1) !== \";\") str += \";\";\n\t\treturn replace(str);\n\t}\n\n\t//TODO consider creating a merged map\n\treturn function(str){\n\t\treturn String(str).replace(re, replacer);\n\t};\n}());\n\nfunction sorter(a, b){\n\treturn a < b ? 1 : -1;\n}\n\nfunction getReplacer(map){\n\treturn function replace(str){\n\t\tif(str.charAt(1) === \"#\"){\n\t\t\tif(str.charAt(2) === \"X\" || str.charAt(2) === \"x\"){\n\t\t\t\treturn decodeCodePoint(parseInt(str.substr(3), 16));\n\t\t\t}\n\t\t\treturn decodeCodePoint(parseInt(str.substr(2), 10));\n\t\t}\n\t\treturn map[str.slice(1, -1)];\n\t};\n}\n\nmodule.exports = {\n\tXML: decodeXMLStrict,\n\tHTML: decodeHTML,\n\tHTMLStrict: decodeHTMLStrict\n};//# sourceMappingURL=data:application/json;charset=utf-8;base64,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");

FIXME found
Open

    eval(" /* eslint-env node */\n'use strict';\n\n// SDP helpers.\nvar SDPUtils = {};\n\n// Generate an alphanumeric identifier for cname or mids.\n// TODO: use UUIDs instead? https://gist.github.com/jed/982883\nSDPUtils.generateIdentifier = function() {\n  return Math.random().toString(36).substr(2, 10);\n};\n\n// The RTCP CNAME used by all peerconnections from the same JS.\nSDPUtils.localCName = SDPUtils.generateIdentifier();\n\n// Splits SDP into lines, dealing with both CRLF and LF.\nSDPUtils.splitLines = function(blob) {\n  return blob.trim().split('\\n').map(function(line) {\n    return line.trim();\n  });\n};\n// Splits SDP into sessionpart and mediasections. Ensures CRLF.\nSDPUtils.splitSections = function(blob) {\n  var parts = blob.split('\\nm=');\n  return parts.map(function(part, index) {\n    return (index > 0 ? 'm=' + part : part).trim() + '\\r\\n';\n  });\n};\n\n// Returns lines that start with a certain prefix.\nSDPUtils.matchPrefix = function(blob, prefix) {\n  return SDPUtils.splitLines(blob).filter(function(line) {\n    return line.indexOf(prefix) === 0;\n  });\n};\n\n// Parses an ICE candidate line. Sample input:\n// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8\n// rport 55996\"\nSDPUtils.parseCandidate = function(line) {\n  var parts;\n  // Parse both variants.\n  if (line.indexOf('a=candidate:') === 0) {\n    parts = line.substring(12).split(' ');\n  } else {\n    parts = line.substring(10).split(' ');\n  }\n\n  var candidate = {\n    foundation: parts[0],\n    component: parts[1],\n    protocol: parts[2].toLowerCase(),\n    priority: parseInt(parts[3], 10),\n    ip: parts[4],\n    port: parseInt(parts[5], 10),\n    // skip parts[6] == 'typ'\n    type: parts[7]\n  };\n\n  for (var i = 8; i < parts.length; i += 2) {\n    switch (parts[i]) {\n      case 'raddr':\n        candidate.relatedAddress = parts[i + 1];\n        break;\n      case 'rport':\n        candidate.relatedPort = parseInt(parts[i + 1], 10);\n        break;\n      case 'tcptype':\n        candidate.tcpType = parts[i + 1];\n        break;\n      default: // Unknown extensions are silently ignored.\n        break;\n    }\n  }\n  return candidate;\n};\n\n// Translates a candidate object into SDP candidate attribute.\nSDPUtils.writeCandidate = function(candidate) {\n  var sdp = [];\n  sdp.push(candidate.foundation);\n  sdp.push(candidate.component);\n  sdp.push(candidate.protocol.toUpperCase());\n  sdp.push(candidate.priority);\n  sdp.push(candidate.ip);\n  sdp.push(candidate.port);\n\n  var type = candidate.type;\n  sdp.push('typ');\n  sdp.push(type);\n  if (type !== 'host' && candidate.relatedAddress &&\n      candidate.relatedPort) {\n    sdp.push('raddr');\n    sdp.push(candidate.relatedAddress); // was: relAddr\n    sdp.push('rport');\n    sdp.push(candidate.relatedPort); // was: relPort\n  }\n  if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {\n    sdp.push('tcptype');\n    sdp.push(candidate.tcpType);\n  }\n  return 'candidate:' + sdp.join(' ');\n};\n\n// Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input:\n// a=rtpmap:111 opus/48000/2\nSDPUtils.parseRtpMap = function(line) {\n  var parts = line.substr(9).split(' ');\n  var parsed = {\n    payloadType: parseInt(parts.shift(), 10) // was: id\n  };\n\n  parts = parts[0].split('/');\n\n  parsed.name = parts[0];\n  parsed.clockRate = parseInt(parts[1], 10); // was: clockrate\n  // was: channels\n  parsed.numChannels = parts.length === 3 ? parseInt(parts[2], 10) : 1;\n  return parsed;\n};\n\n// Generate an a=rtpmap line from RTCRtpCodecCapability or\n// RTCRtpCodecParameters.\nSDPUtils.writeRtpMap = function(codec) {\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate +\n      (codec.numChannels !== 1 ? '/' + codec.numChannels : '') + '\\r\\n';\n};\n\n// Parses an a=extmap line (headerextension from RFC 5285). Sample input:\n// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset\nSDPUtils.parseExtmap = function(line) {\n  var parts = line.substr(9).split(' ');\n  return {\n    id: parseInt(parts[0], 10),\n    uri: parts[1]\n  };\n};\n\n// Generates a=extmap line from RTCRtpHeaderExtensionParameters or\n// RTCRtpHeaderExtension.\nSDPUtils.writeExtmap = function(headerExtension) {\n  return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) +\n       ' ' + headerExtension.uri + '\\r\\n';\n};\n\n// Parses an ftmp line, returns dictionary. Sample input:\n// a=fmtp:96 vbr=on;cng=on\n// Also deals with vbr=on; cng=on\nSDPUtils.parseFmtp = function(line) {\n  var parsed = {};\n  var kv;\n  var parts = line.substr(line.indexOf(' ') + 1).split(';');\n  for (var j = 0; j < parts.length; j++) {\n    kv = parts[j].trim().split('=');\n    parsed[kv[0].trim()] = kv[1];\n  }\n  return parsed;\n};\n\n// Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeFmtp = function(codec) {\n  var line = '';\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  if (codec.parameters && Object.keys(codec.parameters).length) {\n    var params = [];\n    Object.keys(codec.parameters).forEach(function(param) {\n      params.push(param + '=' + codec.parameters[param]);\n    });\n    line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\\r\\n';\n  }\n  return line;\n};\n\n// Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:\n// a=rtcp-fb:98 nack rpsi\nSDPUtils.parseRtcpFb = function(line) {\n  var parts = line.substr(line.indexOf(' ') + 1).split(' ');\n  return {\n    type: parts.shift(),\n    parameter: parts.join(' ')\n  };\n};\n// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeRtcpFb = function(codec) {\n  var lines = '';\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  if (codec.rtcpFeedback && codec.rtcpFeedback.length) {\n    // FIXME: special handling for trr-int?\n    codec.rtcpFeedback.forEach(function(fb) {\n      lines += 'a=rtcp-fb:' + pt + ' ' + fb.type +\n      (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') +\n          '\\r\\n';\n    });\n  }\n  return lines;\n};\n\n// Parses an RFC 5576 ssrc media attribute. Sample input:\n// a=ssrc:3735928559 cname:something\nSDPUtils.parseSsrcMedia = function(line) {\n  var sp = line.indexOf(' ');\n  var parts = {\n    ssrc: parseInt(line.substr(7, sp - 7), 10)\n  };\n  var colon = line.indexOf(':', sp);\n  if (colon > -1) {\n    parts.attribute = line.substr(sp + 1, colon - sp - 1);\n    parts.value = line.substr(colon + 1);\n  } else {\n    parts.attribute = line.substr(sp + 1);\n  }\n  return parts;\n};\n\n// Extracts DTLS parameters from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n//   get the fingerprint line as input. See also getIceParameters.\nSDPUtils.getDtlsParameters = function(mediaSection, sessionpart) {\n  var lines = SDPUtils.splitLines(mediaSection);\n  // Search in session part, too.\n  lines = lines.concat(SDPUtils.splitLines(sessionpart));\n  var fpLine = lines.filter(function(line) {\n    return line.indexOf('a=fingerprint:') === 0;\n  })[0].substr(14);\n  // Note: a=setup line is ignored since we use the 'auto' role.\n  var dtlsParameters = {\n    role: 'auto',\n    fingerprints: [{\n      algorithm: fpLine.split(' ')[0],\n      value: fpLine.split(' ')[1]\n    }]\n  };\n  return dtlsParameters;\n};\n\n// Serializes DTLS parameters to SDP.\nSDPUtils.writeDtlsParameters = function(params, setupType) {\n  var sdp = 'a=setup:' + setupType + '\\r\\n';\n  params.fingerprints.forEach(function(fp) {\n    sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\\r\\n';\n  });\n  return sdp;\n};\n// Parses ICE information from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n//   get the ice-ufrag and ice-pwd lines as input.\nSDPUtils.getIceParameters = function(mediaSection, sessionpart) {\n  var lines = SDPUtils.splitLines(mediaSection);\n  // Search in session part, too.\n  lines = lines.concat(SDPUtils.splitLines(sessionpart));\n  var iceParameters = {\n    usernameFragment: lines.filter(function(line) {\n      return line.indexOf('a=ice-ufrag:') === 0;\n    })[0].substr(12),\n    password: lines.filter(function(line) {\n      return line.indexOf('a=ice-pwd:') === 0;\n    })[0].substr(10)\n  };\n  return iceParameters;\n};\n\n// Serializes ICE parameters to SDP.\nSDPUtils.writeIceParameters = function(params) {\n  return 'a=ice-ufrag:' + params.usernameFragment + '\\r\\n' +\n      'a=ice-pwd:' + params.password + '\\r\\n';\n};\n\n// Parses the SDP media section and returns RTCRtpParameters.\nSDPUtils.parseRtpParameters = function(mediaSection) {\n  var description = {\n    codecs: [],\n    headerExtensions: [],\n    fecMechanisms: [],\n    rtcp: []\n  };\n  var lines = SDPUtils.splitLines(mediaSection);\n  var mline = lines[0].split(' ');\n  for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..]\n    var pt = mline[i];\n    var rtpmapline = SDPUtils.matchPrefix(\n        mediaSection, 'a=rtpmap:' + pt + ' ')[0];\n    if (rtpmapline) {\n      var codec = SDPUtils.parseRtpMap(rtpmapline);\n      var fmtps = SDPUtils.matchPrefix(\n          mediaSection, 'a=fmtp:' + pt + ' ');\n      // Only the first a=fmtp:<pt> is considered.\n      codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};\n      codec.rtcpFeedback = SDPUtils.matchPrefix(\n          mediaSection, 'a=rtcp-fb:' + pt + ' ')\n        .map(SDPUtils.parseRtcpFb);\n      description.codecs.push(codec);\n      // parse FEC mechanisms from rtpmap lines.\n      switch (codec.name.toUpperCase()) {\n        case 'RED':\n        case 'ULPFEC':\n          description.fecMechanisms.push(codec.name.toUpperCase());\n          break;\n        default: // only RED and ULPFEC are recognized as FEC mechanisms.\n          break;\n      }\n    }\n  }\n  SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) {\n    description.headerExtensions.push(SDPUtils.parseExtmap(line));\n  });\n  // FIXME: parse rtcp.\n  return description;\n};\n\n// Generates parts of the SDP media section describing the capabilities /\n// parameters.\nSDPUtils.writeRtpDescription = function(kind, caps) {\n  var sdp = '';\n\n  // Build the mline.\n  sdp += 'm=' + kind + ' ';\n  sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.\n  sdp += ' UDP/TLS/RTP/SAVPF ';\n  sdp += caps.codecs.map(function(codec) {\n    if (codec.preferredPayloadType !== undefined) {\n      return codec.preferredPayloadType;\n    }\n    return codec.payloadType;\n  }).join(' ') + '\\r\\n';\n\n  sdp += 'c=IN IP4 0.0.0.0\\r\\n';\n  sdp += 'a=rtcp:9 IN IP4 0.0.0.0\\r\\n';\n\n  // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.\n  caps.codecs.forEach(function(codec) {\n    sdp += SDPUtils.writeRtpMap(codec);\n    sdp += SDPUtils.writeFmtp(codec);\n    sdp += SDPUtils.writeRtcpFb(codec);\n  });\n  sdp += 'a=rtcp-mux\\r\\n';\n\n  caps.headerExtensions.forEach(function(extension) {\n    sdp += SDPUtils.writeExtmap(extension);\n  });\n  // FIXME: write fecMechanisms.\n  return sdp;\n};\n\n// Parses the SDP media section and returns an array of\n// RTCRtpEncodingParameters.\nSDPUtils.parseRtpEncodingParameters = function(mediaSection) {\n  var encodingParameters = [];\n  var description = SDPUtils.parseRtpParameters(mediaSection);\n  var hasRed = description.fecMechanisms.indexOf('RED') !== -1;\n  var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;\n\n  // filter a=ssrc:... cname:, ignore PlanB-msid\n  var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n  .map(function(line) {\n    return SDPUtils.parseSsrcMedia(line);\n  })\n  .filter(function(parts) {\n    return parts.attribute === 'cname';\n  });\n  var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;\n  var secondarySsrc;\n\n  var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID')\n  .map(function(line) {\n    var parts = line.split(' ');\n    parts.shift();\n    return parts.map(function(part) {\n      return parseInt(part, 10);\n    });\n  });\n  if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {\n    secondarySsrc = flows[0][1];\n  }\n\n  description.codecs.forEach(function(codec) {\n    if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {\n      var encParam = {\n        ssrc: primarySsrc,\n        codecPayloadType: parseInt(codec.parameters.apt, 10),\n        rtx: {\n          payloadType: codec.payloadType,\n          ssrc: secondarySsrc\n        }\n      };\n      encodingParameters.push(encParam);\n      if (hasRed) {\n        encParam = JSON.parse(JSON.stringify(encParam));\n        encParam.fec = {\n          ssrc: secondarySsrc,\n          mechanism: hasUlpfec ? 'red+ulpfec' : 'red'\n        };\n        encodingParameters.push(encParam);\n      }\n    }\n  });\n  if (encodingParameters.length === 0 && primarySsrc) {\n    encodingParameters.push({\n      ssrc: primarySsrc\n    });\n  }\n\n  // we support both b=AS and b=TIAS but interpret AS as TIAS.\n  var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');\n  if (bandwidth.length) {\n    if (bandwidth[0].indexOf('b=TIAS:') === 0) {\n      bandwidth = parseInt(bandwidth[0].substr(7), 10);\n    } else if (bandwidth[0].indexOf('b=AS:') === 0) {\n      bandwidth = parseInt(bandwidth[0].substr(5), 10);\n    }\n    encodingParameters.forEach(function(params) {\n      params.maxBitrate = bandwidth;\n    });\n  }\n  return encodingParameters;\n};\n\nSDPUtils.writeSessionBoilerplate = function() {\n  // FIXME: sess-id should be an NTP timestamp.\n  return 'v=0\\r\\n' +\n      'o=thisisadapterortc 8169639915646943137 2 IN IP4 127.0.0.1\\r\\n' +\n      's=-\\r\\n' +\n      't=0 0\\r\\n';\n};\n\nSDPUtils.writeMediaSection = function(transceiver, caps, type, stream) {\n  var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);\n\n  // Map ICE parameters (ufrag, pwd) to SDP.\n  sdp += SDPUtils.writeIceParameters(\n      transceiver.iceGatherer.getLocalParameters());\n\n  // Map DTLS parameters to SDP.\n  sdp += SDPUtils.writeDtlsParameters(\n      transceiver.dtlsTransport.getLocalParameters(),\n      type === 'offer' ? 'actpass' : 'active');\n\n  sdp += 'a=mid:' + transceiver.mid + '\\r\\n';\n\n  if (transceiver.rtpSender && transceiver.rtpReceiver) {\n    sdp += 'a=sendrecv\\r\\n';\n  } else if (transceiver.rtpSender) {\n    sdp += 'a=sendonly\\r\\n';\n  } else if (transceiver.rtpReceiver) {\n    sdp += 'a=recvonly\\r\\n';\n  } else {\n    sdp += 'a=inactive\\r\\n';\n  }\n\n  // FIXME: for RTX there might be multiple SSRCs. Not implemented in Edge yet.\n  if (transceiver.rtpSender) {\n    var msid = 'msid:' + stream.id + ' ' +\n        transceiver.rtpSender.track.id + '\\r\\n';\n    sdp += 'a=' + msid;\n    sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n        ' ' + msid;\n  }\n  // FIXME: this should be written by writeRtpDescription.\n  sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n      ' cname:' + SDPUtils.localCName + '\\r\\n';\n  return sdp;\n};\n\n// Gets the direction from the mediaSection or the sessionpart.\nSDPUtils.getDirection = function(mediaSection, sessionpart) {\n  // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.\n  var lines = SDPUtils.splitLines(mediaSection);\n  for (var i = 0; i < lines.length; i++) {\n    switch (lines[i]) {\n      case 'a=sendrecv':\n      case 'a=sendonly':\n      case 'a=recvonly':\n      case 'a=inactive':\n        return lines[i].substr(2);\n      default:\n        // FIXME: What should happen here?\n    }\n  }\n  if (sessionpart) {\n    return SDPUtils.getDirection(sessionpart);\n  }\n  return 'sendrecv';\n};\n\n// Expose public methods.\nmodule.exports = SDPUtils;\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"452.js","sources":["/home/ubuntu/workspace/node_modules/sdp/sdp.js"],"sourcesContent":[" /* eslint-env node */\n'use strict';\n\n// SDP helpers.\nvar SDPUtils = {};\n\n// Generate an alphanumeric identifier for cname or mids.\n// TODO: use UUIDs instead? https://gist.github.com/jed/982883\nSDPUtils.generateIdentifier = function() {\n  return Math.random().toString(36).substr(2, 10);\n};\n\n// The RTCP CNAME used by all peerconnections from the same JS.\nSDPUtils.localCName = SDPUtils.generateIdentifier();\n\n// Splits SDP into lines, dealing with both CRLF and LF.\nSDPUtils.splitLines = function(blob) {\n  return blob.trim().split('\\n').map(function(line) {\n    return line.trim();\n  });\n};\n// Splits SDP into sessionpart and mediasections. Ensures CRLF.\nSDPUtils.splitSections = function(blob) {\n  var parts = blob.split('\\nm=');\n  return parts.map(function(part, index) {\n    return (index > 0 ? 'm=' + part : part).trim() + '\\r\\n';\n  });\n};\n\n// Returns lines that start with a certain prefix.\nSDPUtils.matchPrefix = function(blob, prefix) {\n  return SDPUtils.splitLines(blob).filter(function(line) {\n    return line.indexOf(prefix) === 0;\n  });\n};\n\n// Parses an ICE candidate line. Sample input:\n// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8\n// rport 55996\"\nSDPUtils.parseCandidate = function(line) {\n  var parts;\n  // Parse both variants.\n  if (line.indexOf('a=candidate:') === 0) {\n    parts = line.substring(12).split(' ');\n  } else {\n    parts = line.substring(10).split(' ');\n  }\n\n  var candidate = {\n    foundation: parts[0],\n    component: parts[1],\n    protocol: parts[2].toLowerCase(),\n    priority: parseInt(parts[3], 10),\n    ip: parts[4],\n    port: parseInt(parts[5], 10),\n    // skip parts[6] == 'typ'\n    type: parts[7]\n  };\n\n  for (var i = 8; i < parts.length; i += 2) {\n    switch (parts[i]) {\n      case 'raddr':\n        candidate.relatedAddress = parts[i + 1];\n        break;\n      case 'rport':\n        candidate.relatedPort = parseInt(parts[i + 1], 10);\n        break;\n      case 'tcptype':\n        candidate.tcpType = parts[i + 1];\n        break;\n      default: // Unknown extensions are silently ignored.\n        break;\n    }\n  }\n  return candidate;\n};\n\n// Translates a candidate object into SDP candidate attribute.\nSDPUtils.writeCandidate = function(candidate) {\n  var sdp = [];\n  sdp.push(candidate.foundation);\n  sdp.push(candidate.component);\n  sdp.push(candidate.protocol.toUpperCase());\n  sdp.push(candidate.priority);\n  sdp.push(candidate.ip);\n  sdp.push(candidate.port);\n\n  var type = candidate.type;\n  sdp.push('typ');\n  sdp.push(type);\n  if (type !== 'host' && candidate.relatedAddress &&\n      candidate.relatedPort) {\n    sdp.push('raddr');\n    sdp.push(candidate.relatedAddress); // was: relAddr\n    sdp.push('rport');\n    sdp.push(candidate.relatedPort); // was: relPort\n  }\n  if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {\n    sdp.push('tcptype');\n    sdp.push(candidate.tcpType);\n  }\n  return 'candidate:' + sdp.join(' ');\n};\n\n// Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input:\n// a=rtpmap:111 opus/48000/2\nSDPUtils.parseRtpMap = function(line) {\n  var parts = line.substr(9).split(' ');\n  var parsed = {\n    payloadType: parseInt(parts.shift(), 10) // was: id\n  };\n\n  parts = parts[0].split('/');\n\n  parsed.name = parts[0];\n  parsed.clockRate = parseInt(parts[1], 10); // was: clockrate\n  // was: channels\n  parsed.numChannels = parts.length === 3 ? parseInt(parts[2], 10) : 1;\n  return parsed;\n};\n\n// Generate an a=rtpmap line from RTCRtpCodecCapability or\n// RTCRtpCodecParameters.\nSDPUtils.writeRtpMap = function(codec) {\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate +\n      (codec.numChannels !== 1 ? '/' + codec.numChannels : '') + '\\r\\n';\n};\n\n// Parses an a=extmap line (headerextension from RFC 5285). Sample input:\n// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset\nSDPUtils.parseExtmap = function(line) {\n  var parts = line.substr(9).split(' ');\n  return {\n    id: parseInt(parts[0], 10),\n    uri: parts[1]\n  };\n};\n\n// Generates a=extmap line from RTCRtpHeaderExtensionParameters or\n// RTCRtpHeaderExtension.\nSDPUtils.writeExtmap = function(headerExtension) {\n  return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) +\n       ' ' + headerExtension.uri + '\\r\\n';\n};\n\n// Parses an ftmp line, returns dictionary. Sample input:\n// a=fmtp:96 vbr=on;cng=on\n// Also deals with vbr=on; cng=on\nSDPUtils.parseFmtp = function(line) {\n  var parsed = {};\n  var kv;\n  var parts = line.substr(line.indexOf(' ') + 1).split(';');\n  for (var j = 0; j < parts.length; j++) {\n    kv = parts[j].trim().split('=');\n    parsed[kv[0].trim()] = kv[1];\n  }\n  return parsed;\n};\n\n// Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeFmtp = function(codec) {\n  var line = '';\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  if (codec.parameters && Object.keys(codec.parameters).length) {\n    var params = [];\n    Object.keys(codec.parameters).forEach(function(param) {\n      params.push(param + '=' + codec.parameters[param]);\n    });\n    line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\\r\\n';\n  }\n  return line;\n};\n\n// Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:\n// a=rtcp-fb:98 nack rpsi\nSDPUtils.parseRtcpFb = function(line) {\n  var parts = line.substr(line.indexOf(' ') + 1).split(' ');\n  return {\n    type: parts.shift(),\n    parameter: parts.join(' ')\n  };\n};\n// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeRtcpFb = function(codec) {\n  var lines = '';\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  if (codec.rtcpFeedback && codec.rtcpFeedback.length) {\n    // FIXME: special handling for trr-int?\n    codec.rtcpFeedback.forEach(function(fb) {\n      lines += 'a=rtcp-fb:' + pt + ' ' + fb.type +\n      (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') +\n          '\\r\\n';\n    });\n  }\n  return lines;\n};\n\n// Parses an RFC 5576 ssrc media attribute. Sample input:\n// a=ssrc:3735928559 cname:something\nSDPUtils.parseSsrcMedia = function(line) {\n  var sp = line.indexOf(' ');\n  var parts = {\n    ssrc: parseInt(line.substr(7, sp - 7), 10)\n  };\n  var colon = line.indexOf(':', sp);\n  if (colon > -1) {\n    parts.attribute = line.substr(sp + 1, colon - sp - 1);\n    parts.value = line.substr(colon + 1);\n  } else {\n    parts.attribute = line.substr(sp + 1);\n  }\n  return parts;\n};\n\n// Extracts DTLS parameters from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n//   get the fingerprint line as input. See also getIceParameters.\nSDPUtils.getDtlsParameters = function(mediaSection, sessionpart) {\n  var lines = SDPUtils.splitLines(mediaSection);\n  // Search in session part, too.\n  lines = lines.concat(SDPUtils.splitLines(sessionpart));\n  var fpLine = lines.filter(function(line) {\n    return line.indexOf('a=fingerprint:') === 0;\n  })[0].substr(14);\n  // Note: a=setup line is ignored since we use the 'auto' role.\n  var dtlsParameters = {\n    role: 'auto',\n    fingerprints: [{\n      algorithm: fpLine.split(' ')[0],\n      value: fpLine.split(' ')[1]\n    }]\n  };\n  return dtlsParameters;\n};\n\n// Serializes DTLS parameters to SDP.\nSDPUtils.writeDtlsParameters = function(params, setupType) {\n  var sdp = 'a=setup:' + setupType + '\\r\\n';\n  params.fingerprints.forEach(function(fp) {\n    sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\\r\\n';\n  });\n  return sdp;\n};\n// Parses ICE information from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n//   get the ice-ufrag and ice-pwd lines as input.\nSDPUtils.getIceParameters = function(mediaSection, sessionpart) {\n  var lines = SDPUtils.splitLines(mediaSection);\n  // Search in session part, too.\n  lines = lines.concat(SDPUtils.splitLines(sessionpart));\n  var iceParameters = {\n    usernameFragment: lines.filter(function(line) {\n      return line.indexOf('a=ice-ufrag:') === 0;\n    })[0].substr(12),\n    password: lines.filter(function(line) {\n      return line.indexOf('a=ice-pwd:') === 0;\n    })[0].substr(10)\n  };\n  return iceParameters;\n};\n\n// Serializes ICE parameters to SDP.\nSDPUtils.writeIceParameters = function(params) {\n  return 'a=ice-ufrag:' + params.usernameFragment + '\\r\\n' +\n      'a=ice-pwd:' + params.password + '\\r\\n';\n};\n\n// Parses the SDP media section and returns RTCRtpParameters.\nSDPUtils.parseRtpParameters = function(mediaSection) {\n  var description = {\n    codecs: [],\n    headerExtensions: [],\n    fecMechanisms: [],\n    rtcp: []\n  };\n  var lines = SDPUtils.splitLines(mediaSection);\n  var mline = lines[0].split(' ');\n  for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..]\n    var pt = mline[i];\n    var rtpmapline = SDPUtils.matchPrefix(\n        mediaSection, 'a=rtpmap:' + pt + ' ')[0];\n    if (rtpmapline) {\n      var codec = SDPUtils.parseRtpMap(rtpmapline);\n      var fmtps = SDPUtils.matchPrefix(\n          mediaSection, 'a=fmtp:' + pt + ' ');\n      // Only the first a=fmtp:<pt> is considered.\n      codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};\n      codec.rtcpFeedback = SDPUtils.matchPrefix(\n          mediaSection, 'a=rtcp-fb:' + pt + ' ')\n        .map(SDPUtils.parseRtcpFb);\n      description.codecs.push(codec);\n      // parse FEC mechanisms from rtpmap lines.\n      switch (codec.name.toUpperCase()) {\n        case 'RED':\n        case 'ULPFEC':\n          description.fecMechanisms.push(codec.name.toUpperCase());\n          break;\n        default: // only RED and ULPFEC are recognized as FEC mechanisms.\n          break;\n      }\n    }\n  }\n  SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) {\n    description.headerExtensions.push(SDPUtils.parseExtmap(line));\n  });\n  // FIXME: parse rtcp.\n  return description;\n};\n\n// Generates parts of the SDP media section describing the capabilities /\n// parameters.\nSDPUtils.writeRtpDescription = function(kind, caps) {\n  var sdp = '';\n\n  // Build the mline.\n  sdp += 'm=' + kind + ' ';\n  sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.\n  sdp += ' UDP/TLS/RTP/SAVPF ';\n  sdp += caps.codecs.map(function(codec) {\n    if (codec.preferredPayloadType !== undefined) {\n      return codec.preferredPayloadType;\n    }\n    return codec.payloadType;\n  }).join(' ') + '\\r\\n';\n\n  sdp += 'c=IN IP4 0.0.0.0\\r\\n';\n  sdp += 'a=rtcp:9 IN IP4 0.0.0.0\\r\\n';\n\n  // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.\n  caps.codecs.forEach(function(codec) {\n    sdp += SDPUtils.writeRtpMap(codec);\n    sdp += SDPUtils.writeFmtp(codec);\n    sdp += SDPUtils.writeRtcpFb(codec);\n  });\n  sdp += 'a=rtcp-mux\\r\\n';\n\n  caps.headerExtensions.forEach(function(extension) {\n    sdp += SDPUtils.writeExtmap(extension);\n  });\n  // FIXME: write fecMechanisms.\n  return sdp;\n};\n\n// Parses the SDP media section and returns an array of\n// RTCRtpEncodingParameters.\nSDPUtils.parseRtpEncodingParameters = function(mediaSection) {\n  var encodingParameters = [];\n  var description = SDPUtils.parseRtpParameters(mediaSection);\n  var hasRed = description.fecMechanisms.indexOf('RED') !== -1;\n  var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;\n\n  // filter a=ssrc:... cname:, ignore PlanB-msid\n  var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n  .map(function(line) {\n    return SDPUtils.parseSsrcMedia(line);\n  })\n  .filter(function(parts) {\n    return parts.attribute === 'cname';\n  });\n  var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;\n  var secondarySsrc;\n\n  var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID')\n  .map(function(line) {\n    var parts = line.split(' ');\n    parts.shift();\n    return parts.map(function(part) {\n      return parseInt(part, 10);\n    });\n  });\n  if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {\n    secondarySsrc = flows[0][1];\n  }\n\n  description.codecs.forEach(function(codec) {\n    if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {\n      var encParam = {\n        ssrc: primarySsrc,\n        codecPayloadType: parseInt(codec.parameters.apt, 10),\n        rtx: {\n          payloadType: codec.payloadType,\n          ssrc: secondarySsrc\n        }\n      };\n      encodingParameters.push(encParam);\n      if (hasRed) {\n        encParam = JSON.parse(JSON.stringify(encParam));\n        encParam.fec = {\n          ssrc: secondarySsrc,\n          mechanism: hasUlpfec ? 'red+ulpfec' : 'red'\n        };\n        encodingParameters.push(encParam);\n      }\n    }\n  });\n  if (encodingParameters.length === 0 && primarySsrc) {\n    encodingParameters.push({\n      ssrc: primarySsrc\n    });\n  }\n\n  // we support both b=AS and b=TIAS but interpret AS as TIAS.\n  var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');\n  if (bandwidth.length) {\n    if (bandwidth[0].indexOf('b=TIAS:') === 0) {\n      bandwidth = parseInt(bandwidth[0].substr(7), 10);\n    } else if (bandwidth[0].indexOf('b=AS:') === 0) {\n      bandwidth = parseInt(bandwidth[0].substr(5), 10);\n    }\n    encodingParameters.forEach(function(params) {\n      params.maxBitrate = bandwidth;\n    });\n  }\n  return encodingParameters;\n};\n\nSDPUtils.writeSessionBoilerplate = function() {\n  // FIXME: sess-id should be an NTP timestamp.\n  return 'v=0\\r\\n' +\n      'o=thisisadapterortc 8169639915646943137 2 IN IP4 127.0.0.1\\r\\n' +\n      's=-\\r\\n' +\n      't=0 0\\r\\n';\n};\n\nSDPUtils.writeMediaSection = function(transceiver, caps, type, stream) {\n  var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);\n\n  // Map ICE parameters (ufrag, pwd) to SDP.\n  sdp += SDPUtils.writeIceParameters(\n      transceiver.iceGatherer.getLocalParameters());\n\n  // Map DTLS parameters to SDP.\n  sdp += SDPUtils.writeDtlsParameters(\n      transceiver.dtlsTransport.getLocalParameters(),\n      type === 'offer' ? 'actpass' : 'active');\n\n  sdp += 'a=mid:' + transceiver.mid + '\\r\\n';\n\n  if (transceiver.rtpSender && transceiver.rtpReceiver) {\n    sdp += 'a=sendrecv\\r\\n';\n  } else if (transceiver.rtpSender) {\n    sdp += 'a=sendonly\\r\\n';\n  } else if (transceiver.rtpReceiver) {\n    sdp += 'a=recvonly\\r\\n';\n  } else {\n    sdp += 'a=inactive\\r\\n';\n  }\n\n  // FIXME: for RTX there might be multiple SSRCs. Not implemented in Edge yet.\n  if (transceiver.rtpSender) {\n    var msid = 'msid:' + stream.id + ' ' +\n        transceiver.rtpSender.track.id + '\\r\\n';\n    sdp += 'a=' + msid;\n    sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n        ' ' + msid;\n  }\n  // FIXME: this should be written by writeRtpDescription.\n  sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n      ' cname:' + SDPUtils.localCName + '\\r\\n';\n  return sdp;\n};\n\n// Gets the direction from the mediaSection or the sessionpart.\nSDPUtils.getDirection = function(mediaSection, sessionpart) {\n  // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.\n  var lines = SDPUtils.splitLines(mediaSection);\n  for (var i = 0; i < lines.length; i++) {\n    switch (lines[i]) {\n      case 'a=sendrecv':\n      case 'a=sendonly':\n      case 'a=recvonly':\n      case 'a=inactive':\n        return lines[i].substr(2);\n      default:\n        // FIXME: What should happen here?\n    }\n  }\n  if (sessionpart) {\n    return SDPUtils.getDirection(sessionpart);\n  }\n  return 'sendrecv';\n};\n\n// Expose public methods.\nmodule.exports = SDPUtils;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/sdp/sdp.js\n// module id = 452\n// module chunks = 0"],"mappings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sourceRoot":""}");

TODO found
Open

    eval("/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n'use strict';\nvar safariShim = {\n  // TODO: DrAlex, should be here, double check against LayoutTests\n  // shimOnTrack: function() { },\n\n  // TODO: DrAlex\n  // attachMediaStream: function(element, stream) { },\n  // reattachMediaStream: function(to, from) { },\n\n  // TODO: once the back-end for the mac port is done, add.\n  // TODO: check for webkitGTK+\n  // shimPeerConnection: function() { },\n\n  shimGetUserMedia: function() {\n    navigator.getUserMedia = navigator.webkitGetUserMedia;\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimGetUserMedia: safariShim.shimGetUserMedia\n  // TODO\n  // shimOnTrack: safariShim.shimOnTrack,\n  // shimPeerConnection: safariShim.shimPeerConnection,\n  // attachMediaStream: safariShim.attachMediaStream,\n  // reattachMediaStream: safariShim.reattachMediaStream\n};\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,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");

TODO found
Open

  # TODO: update this function to enable some flag in the interface
Severity: Minor
Found in app/policies/application_policy.rb by fixme

TODO found
Open

    eval("/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n'use strict';\n\nvar _prodInvariant = __webpack_require__(208);\n\nvar ReactCurrentOwner = __webpack_require__(182);\nvar REACT_ELEMENT_TYPE = __webpack_require__(303);\n\nvar getIteratorFn = __webpack_require__(304);\nvar invariant = __webpack_require__(180);\nvar KeyEscapeUtils = __webpack_require__(301);\nvar warning = __webpack_require__(183);\n\nvar SEPARATOR = '.';\nvar SUBSEPARATOR = ':';\n\n/**\n * This is inlined from ReactElement since this file is shared between\n * isomorphic and renderers. We could extract this to a\n *\n */\n\n/**\n * TODO: Test that a single child and an array with one item have the same key\n * pattern.\n */\n\nvar didWarnAboutMaps = false;\n\n/**\n * Generate a key string that identifies a component within a set.\n *\n * @param {*} component A component that could contain a manual key.\n * @param {number} index Index that is used if a manual key is not provided.\n * @return {string}\n */\nfunction getComponentKey(component, index) {\n  // Do some typechecking here since we call this blindly. We want to ensure\n  // that we don't block potential future ES APIs.\n  if (component && typeof component === 'object' && component.key != null) {\n    // Explicit key\n    return KeyEscapeUtils.escape(component.key);\n  }\n  // Implicit key determined by the index in the set\n  return index.toString(36);\n}\n\n/**\n * @param {?*} children Children tree container.\n * @param {!string} nameSoFar Name of the key path so far.\n * @param {!function} callback Callback to invoke with each child found.\n * @param {?*} traverseContext Used to pass information throughout the traversal\n * process.\n * @return {!number} The number of children in this subtree.\n */\nfunction traverseAllChildrenImpl(children, nameSoFar, callback, traverseContext) {\n  var type = typeof children;\n\n  if (type === 'undefined' || type === 'boolean') {\n    // All of the above are perceived as null.\n    children = null;\n  }\n\n  if (children === null || type === 'string' || type === 'number' ||\n  // The following is inlined from ReactElement. This means we can optimize\n  // some checks. React Fiber also inlines this logic for similar purposes.\n  type === 'object' && children.$$typeof === REACT_ELEMENT_TYPE) {\n    callback(traverseContext, children,\n    // If it's the only child, treat the name as if it was wrapped in an array\n    // so that it's consistent if the number of children grows.\n    nameSoFar === '' ? SEPARATOR + getComponentKey(children, 0) : nameSoFar);\n    return 1;\n  }\n\n  var child;\n  var nextName;\n  var subtreeCount = 0; // Count of children found in the current subtree.\n  var nextNamePrefix = nameSoFar === '' ? SEPARATOR : nameSoFar + SUBSEPARATOR;\n\n  if (Array.isArray(children)) {\n    for (var i = 0; i < children.length; i++) {\n      child = children[i];\n      nextName = nextNamePrefix + getComponentKey(child, i);\n      subtreeCount += traverseAllChildrenImpl(child, nextName, callback, traverseContext);\n    }\n  } else {\n    var iteratorFn = getIteratorFn(children);\n    if (iteratorFn) {\n      var iterator = iteratorFn.call(children);\n      var step;\n      if (iteratorFn !== children.entries) {\n        var ii = 0;\n        while (!(step = iterator.next()).done) {\n          child = step.value;\n          nextName = nextNamePrefix + getComponentKey(child, ii++);\n          subtreeCount += traverseAllChildrenImpl(child, nextName, callback, traverseContext);\n        }\n      } else {\n        if (true) {\n          var mapsAsChildrenAddendum = '';\n          if (ReactCurrentOwner.current) {\n            var mapsAsChildrenOwnerName = ReactCurrentOwner.current.getName();\n            if (mapsAsChildrenOwnerName) {\n              mapsAsChildrenAddendum = ' Check the render method of `' + mapsAsChildrenOwnerName + '`.';\n            }\n          }\n           true ? warning(didWarnAboutMaps, 'Using Maps as children is not yet fully supported. It is an ' + 'experimental feature that might be removed. Convert it to a ' + 'sequence / iterable of keyed ReactElements instead.%s', mapsAsChildrenAddendum) : void 0;\n          didWarnAboutMaps = true;\n        }\n        // Iterator will provide entry [k,v] tuples rather than values.\n        while (!(step = iterator.next()).done) {\n          var entry = step.value;\n          if (entry) {\n            child = entry[1];\n            nextName = nextNamePrefix + KeyEscapeUtils.escape(entry[0]) + SUBSEPARATOR + getComponentKey(child, 0);\n            subtreeCount += traverseAllChildrenImpl(child, nextName, callback, traverseContext);\n          }\n        }\n      }\n    } else if (type === 'object') {\n      var addendum = '';\n      if (true) {\n        addendum = ' If you meant to render a collection of children, use an array ' + 'instead or wrap the object using createFragment(object) from the ' + 'React add-ons.';\n        if (children._isReactElement) {\n          addendum = ' It looks like you\\'re using an element created by a different ' + 'version of React. Make sure to use only one copy of React.';\n        }\n        if (ReactCurrentOwner.current) {\n          var name = ReactCurrentOwner.current.getName();\n          if (name) {\n            addendum += ' Check the render method of `' + name + '`.';\n          }\n        }\n      }\n      var childrenString = String(children);\n       true ?  true ? invariant(false, 'Objects are not valid as a React child (found: %s).%s', childrenString === '[object Object]' ? 'object with keys {' + Object.keys(children).join(', ') + '}' : childrenString, addendum) : _prodInvariant('31', childrenString === '[object Object]' ? 'object with keys {' + Object.keys(children).join(', ') + '}' : childrenString, addendum) : void 0;\n    }\n  }\n\n  return subtreeCount;\n}\n\n/**\n * Traverses children that are typically specified as `props.children`, but\n * might also be specified through attributes:\n *\n * - `traverseAllChildren(this.props.children, ...)`\n * - `traverseAllChildren(this.props.leftPanelChildren, ...)`\n *\n * The `traverseContext` is an optional argument that is passed through the\n * entire traversal. It can be used to store accumulations or anything else that\n * the callback might find relevant.\n *\n * @param {?*} children Children tree object.\n * @param {!function} callback To invoke upon traversing each child.\n * @param {?*} traverseContext Context for traversal.\n * @return {!number} The number of children in this subtree.\n */\nfunction traverseAllChildren(children, callback, traverseContext) {\n  if (children == null) {\n    return 0;\n  }\n\n  return traverseAllChildrenImpl(children, '', callback, traverseContext);\n}\n\nmodule.exports = traverseAllChildren;//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"302.js","sources":["/home/ubuntu/workspace/node_modules/react-dom/lib/traverseAllChildren.js"],"sourcesContent":["/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n'use strict';\n\nvar _prodInvariant = require('./reactProdInvariant');\n\nvar ReactCurrentOwner = require('react/lib/ReactCurrentOwner');\nvar REACT_ELEMENT_TYPE = require('./ReactElementSymbol');\n\nvar getIteratorFn = require('./getIteratorFn');\nvar invariant = require('fbjs/lib/invariant');\nvar KeyEscapeUtils = require('./KeyEscapeUtils');\nvar warning = require('fbjs/lib/warning');\n\nvar SEPARATOR = '.';\nvar SUBSEPARATOR = ':';\n\n/**\n * This is inlined from ReactElement since this file is shared between\n * isomorphic and renderers. We could extract this to a\n *\n */\n\n/**\n * TODO: Test that a single child and an array with one item have the same key\n * pattern.\n */\n\nvar didWarnAboutMaps = false;\n\n/**\n * Generate a key string that identifies a component within a set.\n *\n * @param {*} component A component that could contain a manual key.\n * @param {number} index Index that is used if a manual key is not provided.\n * @return {string}\n */\nfunction getComponentKey(component, index) {\n  // Do some typechecking here since we call this blindly. We want to ensure\n  // that we don't block potential future ES APIs.\n  if (component && typeof component === 'object' && component.key != null) {\n    // Explicit key\n    return KeyEscapeUtils.escape(component.key);\n  }\n  // Implicit key determined by the index in the set\n  return index.toString(36);\n}\n\n/**\n * @param {?*} children Children tree container.\n * @param {!string} nameSoFar Name of the key path so far.\n * @param {!function} callback Callback to invoke with each child found.\n * @param {?*} traverseContext Used to pass information throughout the traversal\n * process.\n * @return {!number} The number of children in this subtree.\n */\nfunction traverseAllChildrenImpl(children, nameSoFar, callback, traverseContext) {\n  var type = typeof children;\n\n  if (type === 'undefined' || type === 'boolean') {\n    // All of the above are perceived as null.\n    children = null;\n  }\n\n  if (children === null || type === 'string' || type === 'number' ||\n  // The following is inlined from ReactElement. This means we can optimize\n  // some checks. React Fiber also inlines this logic for similar purposes.\n  type === 'object' && children.$$typeof === REACT_ELEMENT_TYPE) {\n    callback(traverseContext, children,\n    // If it's the only child, treat the name as if it was wrapped in an array\n    // so that it's consistent if the number of children grows.\n    nameSoFar === '' ? SEPARATOR + getComponentKey(children, 0) : nameSoFar);\n    return 1;\n  }\n\n  var child;\n  var nextName;\n  var subtreeCount = 0; // Count of children found in the current subtree.\n  var nextNamePrefix = nameSoFar === '' ? SEPARATOR : nameSoFar + SUBSEPARATOR;\n\n  if (Array.isArray(children)) {\n    for (var i = 0; i < children.length; i++) {\n      child = children[i];\n      nextName = nextNamePrefix + getComponentKey(child, i);\n      subtreeCount += traverseAllChildrenImpl(child, nextName, callback, traverseContext);\n    }\n  } else {\n    var iteratorFn = getIteratorFn(children);\n    if (iteratorFn) {\n      var iterator = iteratorFn.call(children);\n      var step;\n      if (iteratorFn !== children.entries) {\n        var ii = 0;\n        while (!(step = iterator.next()).done) {\n          child = step.value;\n          nextName = nextNamePrefix + getComponentKey(child, ii++);\n          subtreeCount += traverseAllChildrenImpl(child, nextName, callback, traverseContext);\n        }\n      } else {\n        if (process.env.NODE_ENV !== 'production') {\n          var mapsAsChildrenAddendum = '';\n          if (ReactCurrentOwner.current) {\n            var mapsAsChildrenOwnerName = ReactCurrentOwner.current.getName();\n            if (mapsAsChildrenOwnerName) {\n              mapsAsChildrenAddendum = ' Check the render method of `' + mapsAsChildrenOwnerName + '`.';\n            }\n          }\n          process.env.NODE_ENV !== 'production' ? warning(didWarnAboutMaps, 'Using Maps as children is not yet fully supported. It is an ' + 'experimental feature that might be removed. Convert it to a ' + 'sequence / iterable of keyed ReactElements instead.%s', mapsAsChildrenAddendum) : void 0;\n          didWarnAboutMaps = true;\n        }\n        // Iterator will provide entry [k,v] tuples rather than values.\n        while (!(step = iterator.next()).done) {\n          var entry = step.value;\n          if (entry) {\n            child = entry[1];\n            nextName = nextNamePrefix + KeyEscapeUtils.escape(entry[0]) + SUBSEPARATOR + getComponentKey(child, 0);\n            subtreeCount += traverseAllChildrenImpl(child, nextName, callback, traverseContext);\n          }\n        }\n      }\n    } else if (type === 'object') {\n      var addendum = '';\n      if (process.env.NODE_ENV !== 'production') {\n        addendum = ' If you meant to render a collection of children, use an array ' + 'instead or wrap the object using createFragment(object) from the ' + 'React add-ons.';\n        if (children._isReactElement) {\n          addendum = ' It looks like you\\'re using an element created by a different ' + 'version of React. Make sure to use only one copy of React.';\n        }\n        if (ReactCurrentOwner.current) {\n          var name = ReactCurrentOwner.current.getName();\n          if (name) {\n            addendum += ' Check the render method of `' + name + '`.';\n          }\n        }\n      }\n      var childrenString = String(children);\n      !false ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Objects are not valid as a React child (found: %s).%s', childrenString === '[object Object]' ? 'object with keys {' + Object.keys(children).join(', ') + '}' : childrenString, addendum) : _prodInvariant('31', childrenString === '[object Object]' ? 'object with keys {' + Object.keys(children).join(', ') + '}' : childrenString, addendum) : void 0;\n    }\n  }\n\n  return subtreeCount;\n}\n\n/**\n * Traverses children that are typically specified as `props.children`, but\n * might also be specified through attributes:\n *\n * - `traverseAllChildren(this.props.children, ...)`\n * - `traverseAllChildren(this.props.leftPanelChildren, ...)`\n *\n * The `traverseContext` is an optional argument that is passed through the\n * entire traversal. It can be used to store accumulations or anything else that\n * the callback might find relevant.\n *\n * @param {?*} children Children tree object.\n * @param {!function} callback To invoke upon traversing each child.\n * @param {?*} traverseContext Context for traversal.\n * @return {!number} The number of children in this subtree.\n */\nfunction traverseAllChildren(children, callback, traverseContext) {\n  if (children == null) {\n    return 0;\n  }\n\n  return traverseAllChildrenImpl(children, '', callback, traverseContext);\n}\n\nmodule.exports = traverseAllChildren;\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/react-dom/lib/traverseAllChildren.js\n// module id = 302\n// module chunks = 0"],"mappings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sourceRoot":""}");

FIXME found
Open

    eval("/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = __webpack_require__(452);\nvar logging = __webpack_require__(448).log;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1;\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      this.localStreams.push(stream.clone());\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate &&\n                  lCodec.numChannels === rCodec.numChannels) {\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // FIXME: also need to determine intersection between\n                // .rtcpFeedback and .parameters\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates').length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                // FIXME: actually more complicated, needs to match types etc\n                var localtrack = self.localStreams[0]\n                    .getTracks()[sdpMLineIndex];\n                rtpSender = new RTCRtpSender(localtrack,\n                    transports.dtlsTransport);\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (candidate === null) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && cand.port === 0) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n          arguments[1];\n      return new Promise(function(resolve) {\n        // shim getStats with maplike support\n        var results = new Map();\n        Promise.all(promises).then(function(res) {\n          res.forEach(function(result) {\n            Object.keys(result).forEach(function(id) {\n              results.set(id, result[id]);\n              results[id] = result[id];\n            });\n          });\n          if (cb) {\n            window.setTimeout(cb, 0, results);\n          }\n          resolve(results);\n        });\n      });\n    };\n  },\n\n  // Attach a media stream to an element.\n  attachMediaStream: function(element, stream) {\n    logging('DEPRECATED, attachMediaStream will soon be removed.');\n    element.srcObject = stream;\n  },\n\n  reattachMediaStream: function(to, from) {\n    logging('DEPRECATED, reattachMediaStream will soon be removed.');\n    to.srcObject = from.srcObject;\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimPeerConnection: edgeShim.shimPeerConnection,\n  shimGetUserMedia: __webpack_require__(453),\n  attachMediaStream: edgeShim.attachMediaStream,\n  reattachMediaStream: edgeShim.reattachMediaStream\n};\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"451.js","sources":["/home/ubuntu/workspace/node_modules/localmedia/node_modules/webrtc-adapter/src/js/edge/edge_shim.js"],"sourcesContent":["/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = require('sdp');\nvar logging = require('../utils').log;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1;\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      this.localStreams.push(stream.clone());\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate &&\n                  lCodec.numChannels === rCodec.numChannels) {\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // FIXME: also need to determine intersection between\n                // .rtcpFeedback and .parameters\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates').length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                // FIXME: actually more complicated, needs to match types etc\n                var localtrack = self.localStreams[0]\n                    .getTracks()[sdpMLineIndex];\n                rtpSender = new RTCRtpSender(localtrack,\n                    transports.dtlsTransport);\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (candidate === null) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && cand.port === 0) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n          arguments[1];\n      return new Promise(function(resolve) {\n        // shim getStats with maplike support\n        var results = new Map();\n        Promise.all(promises).then(function(res) {\n          res.forEach(function(result) {\n            Object.keys(result).forEach(function(id) {\n              results.set(id, result[id]);\n              results[id] = result[id];\n            });\n          });\n          if (cb) {\n            window.setTimeout(cb, 0, results);\n          }\n          resolve(results);\n        });\n      });\n    };\n  },\n\n  // Attach a media stream to an element.\n  attachMediaStream: function(element, stream) {\n    logging('DEPRECATED, attachMediaStream will soon be removed.');\n    element.srcObject = stream;\n  },\n\n  reattachMediaStream: function(to, from) {\n    logging('DEPRECATED, reattachMediaStream will soon be removed.');\n    to.srcObject = from.srcObject;\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimPeerConnection: edgeShim.shimPeerConnection,\n  shimGetUserMedia: require('./getusermedia'),\n  attachMediaStream: edgeShim.attachMediaStream,\n  reattachMediaStream: edgeShim.reattachMediaStream\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/localmedia/~/webrtc-adapter/src/js/edge/edge_shim.js\n// module id = 451\n// module chunks = 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