Fix FrozenElementListIterator.

sdk/lib/html/dart2js/html_dart2js.dart

 library html;
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:html_common';
 import 'dart:indexed_db';
 import 'dart:isolate';
 import 'dart:json' as json;
 import 'dart:math';
 import 'dart:svg' as svg;
@@ skipping 7504 matching lines @@
   }
 
   Element max([int compare(Element a, Element b)]) {
     return _Collections.maxInList(this, compare);
   }
 }
 
 class _FrozenElementListIterator implements Iterator<Element> {
   final _FrozenElementList _list;
   int _index = 0;
+  Element _current;
 
   _FrozenElementListIterator(this._list);
 
   /**
    * Moves to the next element. Returns true if the iterator is positioned
    * at an element. Returns false if it is positioned after the last element.
    */
   bool moveNext() {
     int nextIndex = _index + 1;
     if (nextIndex < _list.length) {
       _current = _list[nextIndex];
       _index = nextIndex;
       return true;
     }
     _index = _list.length;
     _current = null;
     return false;
   }
 
   /**
    * Returns the element the [Iterator] is positioned at.
    *
    * Return [:null:] if the iterator is positioned before the first, or
    * after the last element.
    */
-  E get current => _current;
+  Element get current => _current;
 }
 
 class _ElementCssClassSet extends CssClassSet {
 
   final Element _element;
 
   _ElementCssClassSet(this._element);
 
   Set<String> readClasses() {
     var s = new Set<String>();
@@ skipping 13658 matching lines @@
   num get _wheelDeltaX => JS('num', '#.wheelDeltaX', this);
   num get _detail => JS('num', '#.detail', this);
   int get _deltaMode => JS('int', '#.deltaMode', this);
 
 }
 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 
-/// @domName Window
-class Window extends EventTarget implements WindowBase native "@*DOMWindow" {
-
-  Document get document => JS('Document', '#.document', this);
-
-  WindowBase _open2(url, name) => JS('Window', '#.open(#,#)', this, url, name);
-
-  WindowBase _open3(url, name, options) =>
-      JS('Window', '#.open(#,#,#)', this, url, name, options);
-
-  WindowBase open(String url, String name, [String options]) {
-    if (options == null) {
-      return _DOMWindowCrossFrame._createSafe(_open2(url, name));
-    } else {
-      return _DOMWindowCrossFrame._createSafe(_open3(url, name, options));
-    }
-  }
-
-  // API level getter and setter for Location.
-  // TODO: The cross domain safe wrapper can be inserted here or folded into
-  // _LocationWrapper.
-  Location get location {
-    // Firefox work-around for Location.  The Firefox location object cannot be
-    // made to behave like a Dart object so must be wrapped.
-    var result = _location;
-    if (_isDartLocation(result)) return result;  // e.g. on Chrome.
-    if (null == _location_wrapper) {
-      _location_wrapper = new _LocationWrapper(result);
-    }
-    return _location_wrapper;
-  }
-
-  // TODO: consider forcing users to do: window.location.assign('string').
-  /**
-   * Sets the window's location, which causes the browser to navigate to the new
-   * location. [value] may be a Location object or a string.
-   */
-  void set location(value) {
-    if (value is _LocationWrapper) {
-      _location = value._ptr;
-    } else {
-      _location = value;
-    }
-  }
-
-  _LocationWrapper _location_wrapper;  // Cached wrapped Location object.
-
-  // Native getter and setter to access raw Location object.
-  dynamic get _location => JS('Location|=Object', '#.location', this);
-  void set _location(value) {
-    JS('void', '#.location = #', this, value);
-  }
-  // Prevent compiled from thinking 'location' property is available for a Dart
-  // member.
-  @JSName('location')
-  _protect_location() native;
-
-  static _isDartLocation(thing) {
-    // On Firefox the code that implements 'is Location' fails to find the patch
-    // stub on Object.prototype and throws an exception.
-    try {
-      return thing is Location;
-    } catch (e) {
-      return false;
-    }
-  }
-
-  /**
-   * Executes a [callback] after the next batch of browser layout measurements
-   * has completed or would have completed if any browser layout measurements
-   * had been scheduled.
-   */
-  void requestLayoutFrame(TimeoutHandler callback) {
-    _addMeasurementFrameCallback(callback);
-  }
-
-  /** @domName DOMWindow.requestAnimationFrame */
-  int requestAnimationFrame(RequestAnimationFrameCallback callback) {
-    _ensureRequestAnimationFrame();
-    return _requestAnimationFrame(callback);
-  }
-
-  void cancelAnimationFrame(id) {
-    _ensureRequestAnimationFrame();
-    _cancelAnimationFrame(id);
-  }
-
-  @JSName('requestAnimationFrame')
-  int _requestAnimationFrame(RequestAnimationFrameCallback callback) native;
-
-  @JSName('cancelAnimationFrame')
-  void _cancelAnimationFrame(int id) native;
-
-  _ensureRequestAnimationFrame() {
-    if (JS('bool',
-           '!!(#.requestAnimationFrame && #.cancelAnimationFrame)', this, this))
-      return;
-
-    JS('void',
-       r"""
-  (function($this) {
-   var vendors = ['ms', 'moz', 'webkit', 'o'];
-   for (var i = 0; i < vendors.length && !$this.requestAnimationFrame; ++i) {
-     $this.requestAnimationFrame = $this[vendors[i] + 'RequestAnimationFrame'];
-     $this.cancelAnimationFrame =
-         $this[vendors[i]+'CancelAnimationFrame'] ||
-         $this[vendors[i]+'CancelRequestAnimationFrame'];
-   }
-   if ($this.requestAnimationFrame && $this.cancelAnimationFrame) return;
-   $this.requestAnimationFrame = function(callback) {
-      return window.setTimeout(function() {
-        callback(Date.now());
-      }, 16 /* 16ms ~= 60fps */);
-   };
-   $this.cancelAnimationFrame = function(id) { clearTimeout(id); }
-  })(#)""",
-       this);
-  }
-
-  /**
-   * Gets an instance of the Indexed DB factory to being using Indexed DB.
-   *
-   * Use [IdbFactory.supported] to check if Indexed DB is supported on the
-   * current platform.
-   */
-  @SupportedBrowser(SupportedBrowser.CHROME, '23.0')
-  @SupportedBrowser(SupportedBrowser.FIREFOX, '15.0')
-  @SupportedBrowser(SupportedBrowser.IE, '10.0')
-  @Experimental()
-  IdbFactory get indexedDB =>
-      JS('IdbFactory',
-         '#.indexedDB || #.webkitIndexedDB || #.mozIndexedDB',
-         this, this, this);
-
-  /**
-   * Lookup a port by its [name].  Return null if no port is
-   * registered under [name].
-   */
-  SendPortSync lookupPort(String name) {
-    var port = json.parse(document.documentElement.attributes['dart-port:$name']);
-    return _deserialize(port);
-  }
-
-  /**
-   * Register a [port] on this window under the given [name].  This
-   * port may be retrieved by any isolate (or JavaScript script)
-   * running in this window.
-   */
-  void registerPort(String name, var port) {
-    var serialized = _serialize(port);
-    document.documentElement.attributes['dart-port:$name'] = json.stringify(serialized);
-  }
-
-  /// @domName Window.console; @docsEditable true
-  Console get console => Console.safeConsole;
-
-
-  /// @domName EventTarget.addEventListener, EventTarget.removeEventListener, EventTarget.dispatchEvent; @docsEditable true
-  WindowEvents get on =>
-    new WindowEvents(this);
-
-  static const int PERSISTENT = 1;
-
-  static const int TEMPORARY = 0;
-
-  /// @domName Window.applicationCache; @docsEditable true
-  final ApplicationCache applicationCache;
-
-  /// @domName Window.closed; @docsEditable true
-  final bool closed;
-
-  /// @domName Window.crypto; @docsEditable true
-  final Crypto crypto;
-
-  /// @domName Window.defaultStatus; @docsEditable true
-  String defaultStatus;
-
-  /// @domName Window.defaultstatus; @docsEditable true
-  String defaultstatus;
-
-  /// @domName Window.devicePixelRatio; @docsEditable true
-  final num devicePixelRatio;
-
-  /// @domName Window.event; @docsEditable true
-  final Event event;
-
-  /// @domName Window.history; @docsEditable true
-  final History history;
-
-  /// @domName Window.innerHeight; @docsEditable true
-  final int innerHeight;
-
-  /// @domName Window.innerWidth; @docsEditable true
-  final int innerWidth;
-
-  /// @domName Window.localStorage; @docsEditable true
-  final Storage localStorage;
-
-  /// @domName Window.locationbar; @docsEditable true
-  final BarInfo locationbar;
-
-  /// @domName Window.menubar; @docsEditable true
-  final BarInfo menubar;
-
-  /// @domName Window.name; @docsEditable true
-  String name;
-
-  /// @domName Window.navigator; @docsEditable true
-  final Navigator navigator;
-
-  /// @domName Window.offscreenBuffering; @docsEditable true
-  final bool offscreenBuffering;
-
-  /// @domName Window.opener; @docsEditable true
-  WindowBase get opener => _convertNativeToDart_Window(this._opener);
-  @JSName('opener')
-  @Creates('Window|=Object') @Returns('Window|=Object')
-  final dynamic _opener;
-
-  /// @domName Window.outerHeight; @docsEditable true
-  final int outerHeight;
-
-  /// @domName Window.outerWidth; @docsEditable true
-  final int outerWidth;
-
-  /// @domName DOMWindow.pagePopupController; @docsEditable true
-  final PagePopupController pagePopupController;
-
-  /// @domName Window.pageXOffset; @docsEditable true
-  final int pageXOffset;
-
-  /// @domName Window.pageYOffset; @docsEditable true
-  final int pageYOffset;
-
-  /// @domName Window.parent; @docsEditable true
-  WindowBase get parent => _convertNativeToDart_Window(this._parent);
-  @JSName('parent')
-  @Creates('Window|=Object') @Returns('Window|=Object')
-  final dynamic _parent;
-
-  /// @domName Window.performance; @docsEditable true
-  final Performance performance;
-
-  /// @domName Window.personalbar; @docsEditable true
-  final BarInfo personalbar;
-
-  /// @domName Window.screen; @docsEditable true
-  final Screen screen;
-
-  /// @domName Window.screenLeft; @docsEditable true
-  final int screenLeft;
-
-  /// @domName Window.screenTop; @docsEditable true
-  final int screenTop;
-
-  /// @domName Window.screenX; @docsEditable true
-  final int screenX;
-
-  /// @domName Window.screenY; @docsEditable true
-  final int screenY;
-
-  /// @domName Window.scrollX; @docsEditable true
-  final int scrollX;
-
-  /// @domName Window.scrollY; @docsEditable true
-  final int scrollY;
-
-  /// @domName Window.scrollbars; @docsEditable true
-  final BarInfo scrollbars;
-
-  /// @domName Window.self; @docsEditable true
-  WindowBase get self => _convertNativeToDart_Window(this._self);
-  @JSName('self')
-  @Creates('Window|=Object') @Returns('Window|=Object')
-  final dynamic _self;
-
-  /// @domName Window.sessionStorage; @docsEditable true
-  final Storage sessionStorage;
-
-  /// @domName Window.status; @docsEditable true
-  String status;
-
-  /// @domName Window.statusbar; @docsEditable true
-  final BarInfo statusbar;
-
-  /// @domName Window.styleMedia; @docsEditable true
-  final StyleMedia styleMedia;
-
-  /// @domName Window.toolbar; @docsEditable true
-  final BarInfo toolbar;
-
-  /// @domName Window.top; @docsEditable true
-  WindowBase get top => _convertNativeToDart_Window(this._top);
-  @JSName('top')
-  @Creates('Window|=Object') @Returns('Window|=Object')
-  final dynamic _top;
-
-  /// @domName DOMWindow.webkitNotifications; @docsEditable true
-  final NotificationCenter webkitNotifications;
-
-  /// @domName DOMWindow.webkitStorageInfo; @docsEditable true
-  final StorageInfo webkitStorageInfo;
-
-  /// @domName Window.window; @docsEditable true
-  WindowBase get window => _convertNativeToDart_Window(this._window);
-  @JSName('window')
-  @Creates('Window|=Object') @Returns('Window|=Object')
-  final dynamic _window;
-
-  /// @domName Window.addEventListener; @docsEditable true
-  @JSName('addEventListener')
-  void $dom_addEventListener(String type, EventListener listener, [bool useCapture]) native;
-
-  /// @domName Window.alert; @docsEditable true
-  void alert(String message) native;
-
-  /// @domName Window.atob; @docsEditable true
-  String atob(String string) native;
-
-  /// @domName Window.btoa; @docsEditable true
-  String btoa(String string) native;
-
-  /// @domName Window.captureEvents; @docsEditable true
-  void captureEvents() native;
-
-  /// @domName Window.clearInterval; @docsEditable true
-  void clearInterval(int handle) native;
-
-  /// @domName Window.clearTimeout; @docsEditable true
-  void clearTimeout(int handle) native;
-
-  /// @domName Window.close; @docsEditable true
-  void close() native;
-
-  /// @domName Window.confirm; @docsEditable true
-  bool confirm(String message) native;
-
-  /// @domName Window.dispatchEvent; @docsEditable true
-  @JSName('dispatchEvent')
-  bool $dom_dispatchEvent(Event evt) native;
-
-  /// @domName Window.find; @docsEditable true
-  bool find(String string, bool caseSensitive, bool backwards, bool wrap, bool wholeWord, bool searchInFrames, bool showDialog) native;
-
-  /// @domName Window.getComputedStyle; @docsEditable true
-  @JSName('getComputedStyle')
-  CssStyleDeclaration $dom_getComputedStyle(Element element, String pseudoElement) native;
-
-  /// @domName Window.getMatchedCSSRules; @docsEditable true
-  @JSName('getMatchedCSSRules')
-  @Returns('_CssRuleList') @Creates('_CssRuleList')
-  List<CssRule> getMatchedCssRules(Element element, String pseudoElement) native;
-
-  /// @domName Window.getSelection; @docsEditable true
-  DomSelection getSelection() native;
-
-  /// @domName Window.matchMedia; @docsEditable true
-  MediaQueryList matchMedia(String query) native;
-
-  /// @domName Window.moveBy; @docsEditable true
-  void moveBy(num x, num y) native;
-
-  /// @domName Window.moveTo; @docsEditable true
-  void moveTo(num x, num y) native;
-
-  /// @domName DOMWindow.openDatabase; @docsEditable true
-  @Creates('Database') @Creates('DatabaseSync')
-  Database openDatabase(String name, String version, String displayName, int estimatedSize, [DatabaseCallback creationCallback]) native;
-
-  /// @domName Window.postMessage; @docsEditable true
-  void postMessage(/*SerializedScriptValue*/ message, String targetOrigin, [List messagePorts]) {
-    if (?message &&
-        !?messagePorts) {
-      var message_1 = convertDartToNative_SerializedScriptValue(message);
-      _postMessage_1(message_1, targetOrigin);
-      return;
-    }
-    if (?message) {
-      var message_2 = convertDartToNative_SerializedScriptValue(message);
-      _postMessage_2(message_2, targetOrigin, messagePorts);
-      return;
-    }
-    throw new ArgumentError("Incorrect number or type of arguments");
-  }
-  @JSName('postMessage')
-  void _postMessage_1(message, targetOrigin) native;
-  @JSName('postMessage')
-  void _postMessage_2(message, targetOrigin, List messagePorts) native;
-
-  /// @domName Window.print; @docsEditable true
-  void print() native;
-
-  /// @domName Window.releaseEvents; @docsEditable true
-  void releaseEvents() native;
-
-  /// @domName Window.removeEventListener; @docsEditable true
-  @JSName('removeEventListener')
-  void $dom_removeEventListener(String type, EventListener listener, [bool useCapture]) native;
-
-  /// @domName Window.resizeBy; @docsEditable true
-  void resizeBy(num x, num y) native;
-
-  /// @domName Window.resizeTo; @docsEditable true
-  void resizeTo(num width, num height) native;
-
-  /// @domName Window.scroll; @docsEditable true
-  void scroll(int x, int y) native;
-
-  /// @domName Window.scrollBy; @docsEditable true
-  void scrollBy(int x, int y) native;
-
-  /// @domName Window.scrollTo; @docsEditable true
-  void scrollTo(int x, int y) native;
-
-  /// @domName Window.setInterval; @docsEditable true
-  int setInterval(TimeoutHandler handler, int timeout) native;
-
-  /// @domName Window.setTimeout; @docsEditable true
-  int setTimeout(TimeoutHandler handler, int timeout) native;
-
-  /// @domName Window.showModalDialog; @docsEditable true
-  Object showModalDialog(String url, [Object dialogArgs, String featureArgs]) native;
-
-  /// @domName Window.stop; @docsEditable true
-  void stop() native;
-
-  /// @domName Window.webkitConvertPointFromNodeToPage; @docsEditable true
-  Point webkitConvertPointFromNodeToPage(Node node, Point p) native;
-
-  /// @domName Window.webkitConvertPointFromPageToNode; @docsEditable true
-  Point webkitConvertPointFromPageToNode(Node node, Point p) native;
-
-  /// @domName DOMWindow.webkitRequestFileSystem; @docsEditable true
-  void webkitRequestFileSystem(int type, int size, FileSystemCallback successCallback, [ErrorCallback errorCallback]) native;
-
-  /// @domName DOMWindow.webkitResolveLocalFileSystemURL; @docsEditable true
-  @JSName('webkitResolveLocalFileSystemURL')
-  void webkitResolveLocalFileSystemUrl(String url, EntryCallback successCallback, [ErrorCallback errorCallback]) native;
-
-}
-
-/// @docsEditable true
-class WindowEvents extends Events {
-  /// @docsEditable true
-  WindowEvents(EventTarget _ptr) : super(_ptr);
-
-  /// @docsEditable true
-  EventListenerList get contentLoaded => this['DOMContentLoaded'];
-
-  /// @docsEditable true
-  EventListenerList get abort => this['abort'];
-
-  /// @docsEditable true
-  EventListenerList get beforeUnload => this['beforeunload'];
-
-  /// @docsEditable true
-  EventListenerList get blur => this['blur'];
-
-  /// @docsEditable true
-  EventListenerList get canPlay => this['canplay'];
-
-  /// @docsEditable true
-  EventListenerList get canPlayThrough => this['canplaythrough'];
-
-  /// @docsEditable true
-  EventListenerList get change => this['change'];
-
-  /// @docsEditable true
-  EventListenerList get click => this['click'];
-
-  /// @docsEditable true
-  EventListenerList get contextMenu => this['contextmenu'];
-
-  /// @docsEditable true
-  EventListenerList get doubleClick => this['dblclick'];
-
-  /// @docsEditable true
-  EventListenerList get deviceMotion => this['devicemotion'];
-
-  /// @docsEditable true
-  EventListenerList get deviceOrientation => this['deviceorientation'];
-
-  /// @docsEditable true
-  EventListenerList get drag => this['drag'];
-
-  /// @docsEditable true
-  EventListenerList get dragEnd => this['dragend'];
-
-  /// @docsEditable true
-  EventListenerList get dragEnter => this['dragenter'];
-
-  /// @docsEditable true
-  EventListenerList get dragLeave => this['dragleave'];
-
-  /// @docsEditable true
-  EventListenerList get dragOver => this['dragover'];
-
-  /// @docsEditable true
-  EventListenerList get dragStart => this['dragstart'];
-
-  /// @docsEditable true
-  EventListenerList get drop => this['drop'];
-
-  /// @docsEditable true
-  EventListenerList get durationChange => this['durationchange'];
-
-  /// @docsEditable true
-  EventListenerList get emptied => this['emptied'];
-
-  /// @docsEditable true
-  EventListenerList get ended => this['ended'];
-
-  /// @docsEditable true
-  EventListenerList get error => this['error'];
-
-  /// @docsEditable true
-  EventListenerList get focus => this['focus'];
-
-  /// @docsEditable true
-  EventListenerList get hashChange => this['hashchange'];
-
-  /// @docsEditable true
-  EventListenerList get input => this['input'];
-
-  /// @docsEditable true
-  EventListenerList get invalid => this['invalid'];
-
-  /// @docsEditable true
-  EventListenerList get keyDown => this['keydown'];
-
-  /// @docsEditable true
-  EventListenerList get keyPress => this['keypress'];
-
-  /// @docsEditable true
-  EventListenerList get keyUp => this['keyup'];
-
-  /// @docsEditable true
-  EventListenerList get load => this['load'];
-
-  /// @docsEditable true
-  EventListenerList get loadedData => this['loadeddata'];
-
-  /// @docsEditable true
-  EventListenerList get loadedMetadata => this['loadedmetadata'];
-
-  /// @docsEditable true
-  EventListenerList get loadStart => this['loadstart'];
-
-  /// @docsEditable true
-  EventListenerList get message => this['message'];
-
-  /// @docsEditable true
-  EventListenerList get mouseDown => this['mousedown'];
-
-  /// @docsEditable true
-  EventListenerList get mouseMove => this['mousemove'];
-
-  /// @docsEditable true
-  EventListenerList get mouseOut => this['mouseout'];
-
-  /// @docsEditable true
-  EventListenerList get mouseOver => this['mouseover'];
-
-  /// @docsEditable true
-  EventListenerList get mouseUp => this['mouseup'];
-
-  /// @docsEditable true
-  EventListenerList get mouseWheel => this['mousewheel'];
-
-  /// @docsEditable true
-  EventListenerList get offline => this['offline'];
-
-  /// @docsEditable true
-  EventListenerList get online => this['online'];
-
-  /// @docsEditable true
-  EventListenerList get pageHide => this['pagehide'];
-
-  /// @docsEditable true
-  EventListenerList get pageShow => this['pageshow'];
-
-  /// @docsEditable true
-  EventListenerList get pause => this['pause'];
-
-  /// @docsEditable true
-  EventListenerList get play => this['play'];
-
-  /// @docsEditable true
-  EventListenerList get playing => this['playing'];
-
-  /// @docsEditable true
-  EventListenerList get popState => this['popstate'];
-
-  /// @docsEditable true
-  EventListenerList get progress => this['progress'];
-
-  /// @docsEditable true
-  EventListenerList get rateChange => this['ratechange'];
-
-  /// @docsEditable true
-  EventListenerList get reset => this['reset'];
-
-  /// @docsEditable true
-  EventListenerList get resize => this['resize'];
-
-  /// @docsEditable true
-  EventListenerList get scroll => this['scroll'];
-
-  /// @docsEditable true
-  EventListenerList get search => this['search'];
-
-  /// @docsEditable true
-  EventListenerList get seeked => this['seeked'];
-
-  /// @docsEditable true
-  EventListenerList get seeking => this['seeking'];
-
-  /// @docsEditable true
-  EventListenerList get select => this['select'];
-
-  /// @docsEditable true
-  EventListenerList get stalled => this['stalled'];
-
-  /// @docsEditable true
-  EventListenerList get storage => this['storage'];
-
-  /// @docsEditable true
-  EventListenerList get submit => this['submit'];
-
-  /// @docsEditable true
-  EventListenerList get suspend => this['suspend'];
-
-  /// @docsEditable true
-  EventListenerList get timeUpdate => this['timeupdate'];
-
-  /// @docsEditable true
-  EventListenerList get touchCancel => this['touchcancel'];
-
-  /// @docsEditable true
-  EventListenerList get touchEnd => this['touchend'];
-
-  /// @docsEditable true
-  EventListenerList get touchMove => this['touchmove'];
-
-  /// @docsEditable true
-  EventListenerList get touchStart => this['touchstart'];
-
-  /// @docsEditable true
-  EventListenerList get unload => this['unload'];
-
-  /// @docsEditable true
-  EventListenerList get volumeChange => this['volumechange'];
-
-  /// @docsEditable true
-  EventListenerList get waiting => this['waiting'];
-
-  /// @docsEditable true
-  EventListenerList get animationEnd => this['webkitAnimationEnd'];
-
-  /// @docsEditable true
-  EventListenerList get animationIteration => this['webkitAnimationIteration'];
-
-  /// @docsEditable true
-  EventListenerList get animationStart => this['webkitAnimationStart'];
-
-  /// @docsEditable true
-  EventListenerList get transitionEnd => this['webkitTransitionEnd'];
-}
-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-
 /// @domName Worker; @docsEditable true
 class Worker extends AbstractWorker native "*Worker" {
 
   ///@docsEditable true
   factory Worker(String scriptUrl) => Worker._create(scriptUrl);
   static Worker _create(String scriptUrl) => JS('Worker', 'new Worker(#)', scriptUrl);
 
   /// @domName EventTarget.addEventListener, EventTarget.removeEventListener, EventTarget.dispatchEvent; @docsEditable true
   WorkerEvents get on =>
     new WorkerEvents(this);
@@ skipping 5002 matching lines @@
       _position = nextPosition;
       return true;
     }
     _current = null;
     _position = _array.length;
     return false;
   }
 
   T get current => _current;
 }