https://opticaboavista.com/polyfills.js

116need
117    // to throw an error, but sometimes user may not want this error.
118    // For example,
119    // we have two web pages, page1 includes zone.js, page2 doesn't.
120    // and the 1st time user load page1 and page2, everything work fine,
121    // but when user load page2 again, error occurs because global['Zone'] already exists.
122    // so we add a flag to let user choose whether to throw this error or not.
123    // By default, if existing Zone is from zone.js, we will not throw the error.
124    if (checkDuplicate || typeof global['Zone'].__symbol__ !== 'function') {
125      throw new Error('Zone already loaded.');
126    } else {
127      return global['Zone'];
128    }
129  }
130
131  class Zone {
132    constructor(parent, zoneSpec) {
133      this._parent = parent;
134      this._name = zoneSpec ? zoneSpec.name || 'unnamed' : '<root>';
135      this._properties = zoneSpec && zoneSpec.properties || {};
136      this._zoneDelegate = new _ZoneDelegate(this, this._parent && this._parent._zoneDelegate, zoneSpec);
137    }
138
139    static assertZonePatched() {
140      if (global['Promise'] !== patches['ZoneAwarePromise']) {
141        throw new Error('Zone.js has detected that ZoneAwarePromise `(window|global).Promise` ' + 'has been overwritten.\n' + 'Most likely cause is that a Promise polyfill has been loaded ' + 'after Zone.js (Polyfilling Promise api is not necessary when zone.js is loaded. ' + 'If you must load one, do so before loading zone.js.)');
142      }
143    }
144
145    static get root() {
146      let zone = Zone.current;
147
148      while (zone.parent) {
149        zone = zone.parent;
150      }
151
152      return zone;
153    }
154
155    static get current() {
156      return _currentZoneFrame.zone;
157    }
158
159    static get currentTask() {
160      return _currentTask;
161    } // tslint:disable-next-line:require-internal-with-underscore
162
163
164    static __load_patch(name, fn, ignoreDuplicate = false) {
165      if (patches.hasOwnProperty(name)) {
166        // `checkDuplicate` option is defined from global variable
167        // so it works for all modules.
168        // `ignoreDuplicate` can work for the specified module
169        if (!ignoreDuplicate && checkDuplicate) {
170          throw Error('Already loaded patch: ' + name);
171        }
172      } else if (!global['__Zone_disable_' + name]) {
173        const perfName = 'Zone:' + name;
174        mark(perfName);
175        patches[name] = fn(global, Zone, _api);
176        performanceMeasure(perfName, perfName);
177      }
178    }
179
180    get parent() {
181      return this._parent;
182    }
183
184    get name() {
185      return this._name;
186    }
187
188    get(key) {
189      const zone = this.getZoneWith(key);
190      if (zone) return zone._properties[key];
191    }
192
193    getZoneWith(key) {
194      let current = this;
195
196      while (current) {
197        if (current._properties.hasOwnProperty(key)) {
198          return current;
199        }
200
201        current = current._parent;
202      }
203
204      return null;
205    }
206
207    fork(zoneSpec) {
208      if (!zoneSpec) throw new Error('ZoneSpec required!');
209      return this._zoneDelegate.fork(this, zoneSpec);
210    }
211
212    wrap(callback, source) {
213      if (typeof callback !== 'function') {
214        throw new Error('Expecting function got: ' + callback);
215      }
216
217      const _callback = this._zoneDelegate.intercept(this, callback, source);
218
219      const zone = this;
220      return function () {
221        return zone.runGuarded(_callback, this, arguments, source);
222      };
223    }
224
225    run(callback, applyThis, applyArgs, source) {
226      _currentZoneFrame = {
227        parent: _currentZoneFrame,
228        zone: this
229      };
230
231      try {
232        return this._zoneDelegate.invoke(this, callback, applyThis, applyArgs, source);
233      } finally {
234        _currentZoneFrame = _currentZoneFrame.parent;
235      }
236    }
237
238    runGuarded(callback, applyThis = null, applyArgs, source) {
239      _currentZoneFrame = {
240        parent: _currentZoneFrame,
241        zone: this
242      };
243
244      try {
245        try {
246          return this._zoneDelegate.invoke(this, callback, applyThis, applyArgs, source);
247        } catch (error) {
248          if (this._zoneDelegate.handleError(this, error)) {
249            throw error;
250          }
251        }
252      } finally {
253        _currentZoneFrame = _currentZoneFrame.parent;
254      }
255    }
256
257    runTask(task, applyThis, applyArgs) {
258      if (task.zone != this) {
259        throw new Error('A task can only be run in the zone of creation! (Creation: ' + (task.zone || NO_ZONE).name + '; Execution: ' + this.name + ')');
260      } // https://github.com/angular/zone.js/issues/778, sometimes eventTask
261      // will run in notScheduled(canceled) state, we should not try to
262      // run such kind of task but just return
263
264
265      if (task.state === notScheduled && (task.type === eventTask || task.type === macroTask)) {
266        return;
267      }
268
269      const reEntryGuard = task.state != running;
270      reEntryGuard && task._transitionTo(running, scheduled);
271      task.runCount++;
272      const previousTask = _currentTask;
273      _currentTask = task;
274      _currentZoneFrame = {
275        parent: _currentZoneFrame,
276        zone: this
277      };
278
279      try {
280        if (task.type == macroTask && task.data && !task.data.isPeriodic) {
281          task.cancelFn = undefined;
282        }
283
284        try {
285          return this._zoneDelegate.invokeTask(this, task, applyThis, applyArgs);
286        } catch (error) {
287          if (this._zoneDelegate.handleError(this, error)) {
288            throw error;
289          }
290        }
291      } finally {
292        // if the task's state is notScheduled or unknown, then it has already been cancelled
293        // we should not reset the state to scheduled
294        if (task.state !== notScheduled && task.state !== unknown) {
295          if (task.type == eventTask || task.data && task.data.isPeriodic) {
296            reEntryGuard && task._transitionTo(scheduled, running);
297          } else {
298            task.runCount = 0;
299
300            this._updateTaskCount(task, -1);
301
302            reEntryGuard && task._transitionTo(notScheduled, running, notScheduled);
303          }
304        }
305
306        _currentZoneFrame = _currentZoneFrame.parent;
307        _currentTask = previousTask;
308      }
309    }
310
311    scheduleTask(task) {
312      if (task.zone && task.zone !== this) {
313        // check if the task was rescheduled, the newZone
314        // should not be the children of the original zone
315        let newZone = this;
316
317        while (newZone) {
318          if (newZone === task.zone) {
319            throw Error(`can not reschedule task to ${this.name} which is descendants of the original zone ${task.zone.name}`);
320          }
321
322          newZone = newZone.parent;
323        }
324      }
325
326      task._transitionTo(scheduling, notScheduled);
327
328      const zoneDelegates = [];
329      task._zoneDelegates = zoneDelegates;
330      task._zone = this;
331
332      try {
333        task = this._zoneDelegate.scheduleTask(this, task);
334      } catch (err) {
335        // should set task's state to unknown when scheduleTask throw error
336        // because the err may from reschedule, so the fromState maybe notScheduled
337        task._transitionTo(unknown, scheduling, notScheduled); // TODO: @JiaLiPassion, should we check the result from handleError?
338
339
340        this._zoneDelegate.handleError(this, err);
341
342        throw err;
343      }
344
345      if (task._zoneDelegates === zoneDelegates) {
346        // we have to check because internally the delegate can reschedule the task.
347        this._updateTaskCount(task, 1);
348      }
349
350      if (task.state == scheduling) {
351        task._transitionTo(scheduled, scheduling);
352      }
353
354      return task;
355    }
356
357    scheduleMicroTask(source, callback, data, customSchedule) {
358      return this.scheduleTask(new ZoneTask(microTask, source, callback, data, customSchedule, undefined));
359    }
360
361    scheduleMacroTask(source, callback, data, customSchedule, customCancel) {
362      return this.scheduleTask(new ZoneTask(macroTask, source, callback, data, customSchedule, customCancel));
363    }
364
365    scheduleEventTask(source, callback, data, customSchedule, customCancel) {
366      return this.scheduleTask(new ZoneTask(eventTask, source, callback, data, customSchedule, customCancel));
367    }
368
369    cancelTask(task) {
370      if (task.zone != this) throw new Error('A task can only be cancelled in the zone of creation! (Creation: ' + (task.zone || NO_ZONE).name + '; Execution: ' + this.name + ')');
371
372      task._transitionTo(canceling, scheduled, running);
373
374      try {
375        this._zoneDelegate.cancelTask(this, task);
376      } catch (err) {
377        // if error occurs when cancelTask, transit the state to unknown
378        task._transitionTo(unknown, canceling);
379
380        this._zoneDelegate.handleError(this, err);
381
382        throw err;
383      }
384
385      this._updateTaskCount(task, -1);
386
387      task._transitionTo(notScheduled, canceling);
388
389      task.runCount = 0;
390      return task;
391    }
392
393    _updateTaskCount(task, count) {
394      const zoneDelegates = task._zoneDelegates;
395
396      if (count == -1) {
397        task._zoneDelegates = null;
398      }
399
400      for (let i = 0; i < zoneDelegates.length; i++) {
401        zoneDelegates[i]._updateTaskCount(task.type, count);
402      }
403    }
404
405  } // tslint:disable-next-line:require-internal-with-underscore
406
407
408  Zone.__symbol__ = __symbol__;
409  const DELEGATE_ZS = {
410    name: '',
411    onHasTask: (delegate, _, target, hasTaskState) => delegate.hasTask(target, hasTaskState),
412    onScheduleTask: (delegate, _, target, task) => delegate.scheduleTask(target, task),
413    onInvokeTask: (delegate, _, target, task, applyThis, applyArgs) => delegate.invokeTask(target, task, applyThis, applyArgs),
414    onCancelTask: (delegate, _, target, task) => delegate.cancelTask(target, task)
415  };
416
417  class _ZoneDelegate {
418    constructor(zone, parentDelegate, zoneSpec) {
419      this._taskCounts = {
420        'microTask': 0,
421        'macroTask': 0,
422        'eventTask': 0
423      };
424      this.zone = zone;
425      this._parentDelegate = parentDelegate;
426      this._forkZS = zoneSpec && (zoneSpec && zoneSpec.onFork ? zoneSpec : parentDelegate._forkZS);
427      this._forkDlgt = zoneSpec && (zoneSpec.onFork ? parentDelegate : parentDelegate._forkDlgt);
428      this._forkCurrZone = zoneSpec && (zoneSpec.onFork ? this.zone : parentDelegate._forkCurrZone);
429      this._interceptZS = zoneSpec && (zoneSpec.onIntercept ? zoneSpec : parentDelegate._interceptZS);
430      this._interceptDlgt = zoneSpec && (zoneSpec.onIntercept ? parentDelegate : parentDelegate._interceptDlgt);
431      this._interceptCurrZone = zoneSpec && (zoneSpec.onIntercept ? this.zone : parentDelegate._interceptCurrZone);
432      this._invokeZS = zoneSpec && (zoneSpec.onInvoke ? zoneSpec : parentDelegate._invokeZS);
433      this._invokeDlgt = zoneSpec && (zoneSpec.onInvoke ? parentDelegate : parentDelegate._invokeDlgt);
434      this._invokeCurrZone = zoneSpec && (zoneSpec.onInvoke ? this.zone : parentDelegate._invokeCurrZone);
435      this._handleErrorZS = zoneSpec && (zoneSpec.onHandleError ? zoneSpec : parentDelegate._handleErrorZS);
436      this._handleErrorDlgt = zoneSpec && (zoneSpec.onHandleError ? parentDelegate : parentDelegate._handleErrorDlgt);
437      this._handleErrorCurrZone = zoneSpec && (zoneSpec.onHandleError ? this.zone : parentDelegate._handleErrorCurrZone);
438      this._scheduleTaskZS = zoneSpec && (zoneSpec.onScheduleTask ? zoneSpec : parentDelegate._scheduleTaskZS);
439      this._scheduleTaskDlgt = zoneSpec && (zoneSpec.onScheduleTask ? parentDelegate : parentDelegate._scheduleTaskDlgt);
440      this._scheduleTaskCurrZone = zoneSpec && (zoneSpec.onScheduleTask ? this.zone : parentDelegate._scheduleTaskCurrZone);
441      this._invokeTaskZS = zoneSpec && (zoneSpec.onInvokeTask ? zoneSpec : parentDelegate._invokeTaskZS);
442      this._invokeTaskDlgt = zoneSpec && (zoneSpec.onInvokeTask ? parentDelegate : parentDelegate._invokeTaskDlgt);
443      this._invokeTaskCurrZone = zoneSpec && (zoneSpec.onInvokeTask ? this.zone : parentDelegate._invokeTaskCurrZone);
444      this._cancelTaskZS = zoneSpec && (zoneSpec.onCancelTask ? zoneSpec : parentDelegate._cancelTaskZS);
445      this._cancelTaskDlgt = zoneSpec && (zoneSpec.onCancelTask ? parentDelegate : parentDelegate._cancelTaskDlgt);
446      this._cancelTaskCurrZone = zoneSpec && (zoneSpec.onCancelTask ? this.zone : parentDelegate._cancelTaskCurrZone);
447      this._hasTaskZS = null;
448      this._hasTaskDlgt = null;
449      this._hasTaskDlgtOwner = null;
450      this._hasTaskCurrZone = null;
451      const zoneSpecHasTask = zoneSpec && zoneSpec.onHasTask;
452      const parentHasTask = parentDelegate && parentDelegate._hasTaskZS;
453
454      if (zoneSpecHasTask || parentHasTask) {
455        // If we need to report hasTask, than this ZS needs to do ref counting on tasks. In such
456        // a case all task related interceptors must go through this ZD. We can't short circuit it.
457        this._hasTaskZS = zoneSpecHasTask ? zoneSpec : DELEGATE_ZS;
458        this._hasTaskDlgt = parentDelegate;
459        this._hasTaskDlgtOwner = this;
460        this._hasTaskCurrZone = zone;
461
462        if (!zoneSpec.onScheduleTask) {
463          this._scheduleTaskZS = DELEGATE_ZS;
464          this._scheduleTaskDlgt = parentDelegate;
465          this._scheduleTaskCurrZone = this.zone;
466        }
467
468        if (!zoneSpec.onInvokeTask) {
469          this._invokeTaskZS = DELEGATE_ZS;
470          this._invokeTaskDlgt = parentDelegate;
471          this._invokeTaskCurrZone = this.zone;
472        }
473
474        if (!zoneSpec.onCancelTask) {
475          this._cancelTaskZS = DELEGATE_ZS;
476          this._cancelTaskDlgt = parentDelegate;
477          this._cancelTaskCurrZone = this.zone;
478        }
479      }
480    }
481
482    fork(targetZone, zoneSpec) {
483      return this._forkZS ? this._forkZS.onFork(this._forkDlgt, this.zone, targetZone, zoneSpec) : new Zone(targetZone, zoneSpec);
484    }
485
486    intercept(targetZone, callback, source) {
487      return this._interceptZS ? this._interceptZS.onIntercept(this._interceptDlgt, this._interceptCurrZone, targetZone, callback, source) : callback;
488    }
489
490    invoke(targetZone, callback, applyThis, applyArgs, source) {
491      return this._invokeZS ? this._invokeZS.onInvoke(this._invokeDlgt, this._invokeCurrZone, targetZone, callback, applyThis, applyArgs, source) : callback.apply(applyThis, applyArgs);
492    }
493
494    handleError(targetZone, error) {
495      return this._handleErrorZS ? this._handleErrorZS.onHandleError(this._handleErrorDlgt, this._handleErrorCurrZone, targetZone, error) : true;
496    }
497
498    scheduleTask(targetZone, task) {
499      let returnTask = task;
500
501      if (this._scheduleTaskZS) {
502        if (this._hasTaskZS) {
503          returnTask._zoneDelegates.push(this._hasTaskDlgtOwner);
504        } // clang-format off
505
506
507        returnTask = this._scheduleTaskZS.onScheduleTask(this._scheduleTaskDlgt, this._scheduleTaskCurrZone, targetZone, task); // clang-format on
508
509        if (!returnTask) returnTask = task;
510      } else {
511        if (task.scheduleFn) {
512          task.scheduleFn(task);
513        } else if (task.type == microTask) {
514          scheduleMicroTask(task);
515        } else {
516          throw new Error('Task is missing scheduleFn.');
517        }
518      }
519
520      return returnTask;
521    }
522
523    invokeTask(targetZone, task, applyThis, applyArgs) {
524      return this._invokeTaskZS ? this._invokeTaskZS.onInvokeTask(this._invokeTaskDlgt, this._invokeTaskCurrZone, targetZone, task, applyThis, applyArgs) : task.callback.apply(applyThis, applyArgs);
525    }
526
527    cancelTask(targetZone, task) {
528      let value;
529
530      if (this._cancelTaskZS) {
531        value = this._cancelTaskZS.onCancelTask(this._cancelTaskDlgt, this._cancelTaskCurrZone, targetZone, task);
532      } else {
533        if (!task.cancelFn) {
534          throw Error('Task is not cancelable');
535        }
536
537        value = task.cancelFn(task);
538      }
539
540      return value;
541    }
542
543    hasTask(targetZone, isEmpty) {
544      // hasTask should not throw error so other ZoneDelegate
545      // can still trigger hasTask callback
546      try {
547        this._hasTaskZS && this._hasTaskZS.onHasTask(this._hasTaskDlgt, this._hasTaskCurrZone, targetZone, isEmpty);
548      } catch (err) {
549        this.handleError(targetZone, err);
550      }
551    } // tslint:disable-next-line:require-internal-with-underscore
552
553
554    _updateTaskCount(type, count) {
555      const counts = this._taskCounts;
556      const prev = counts[type];
557      const next = counts[type] = prev + count;
558
559      if (next < 0) {
560        throw new Error('More tasks executed then were scheduled.');
561      }
562
563      if (prev == 0 || next == 0) {
564        const isEmpty = {
565          microTask: counts['microTask'] > 0,
566          macroTask: counts['macroTask'] > 0,
567          eventTask: counts['eventTask'] > 0,
568          change: type
569        };
570        this.hasTask(this.zone, isEmpty);
571      }
572    }
573
574  }
575
576  class ZoneTask {
577    constructor(type, source, callback, options, scheduleFn, cancelFn) {
578      // tslint:disable-next-line:require-internal-with-underscore
579      this._zone = null;
580      this.runCount = 0; // tslint:disable-next-line:require-internal-with-underscore
581
582      this._zoneDelegates = null; // tslint:disable-next-line:require-internal-with-underscore
583
584      this._state = 'notScheduled';
585      this.type = type;
586      this.source = source;
587      this.data = options;
588      this.scheduleFn = scheduleFn;
589      this.cancelFn = cancelFn;
590
591      if (!callback) {
592        throw new Error('callback is not defined');
593      }
594
595      this.callback = callback;
596      const self = this; // TODO: @JiaLiPassion options should have interface
597
598      if (type === eventTask && options && options.useG) {
599        this.invoke = ZoneTask.invokeTask;
600      } else {
601        this.invoke = function () {
602          return ZoneTask.invokeTask.call(global, self, this, arguments);
603        };
604      }
605    }
606
607    static invokeTask(task, target, args) {
608      if (!task) {
609        task = this;
610      }
611
612      _numberOfNestedTaskFrames++;
613
614      try {
615        task.runCount++;
616        return task.zone.runTask(task, target, args);
617      } finally {
618        if (_numberOfNestedTaskFrames == 1) {
619          drainMicroTaskQueue();
620        }
621
622        _numberOfNestedTaskFrames--;
623      }
624    }
625
626    get zone() {
627      return this._zone;
628    }
629
630    get state() {
631      return this._state;
632    }
633
634    cancelScheduleRequest() {
635      this._transitionTo(notScheduled, scheduling);
636    } // tslint:disable-next-line:require-internal-with-underscore
637
638
639    _transitionTo(toState, fromState1, fromState2) {
640      if (this._state === fromState1 || this._state === fromState2) {
641        this._state = toState;
642
643        if (toState == notScheduled) {
644          this._zoneDelegates = null;
645        }
646      } else {
647        throw new Error(`${this.type} '${this.source}': can not transition to '${toState}', expecting state '${fromState1}'${fromState2 ? ' or \'' + fromState2 + '\'' : ''}, was '${this._state}'.`);
648      }
649    }
650
651    toString() {
652      if (this.data && typeof this.data.handleId !== 'undefined') {
653        return this.data.handleId.toString();
654      } else {
655        return Object.prototype.toString.call(this);
656      }
657    } // add toJSON method to prevent cyclic error when
658    // call JSON.stringify(zoneTask)
659
660
661    toJSON() {
662      return {
663        type: this.type,
664        state: this.state,
665        source: this.source,
666        zone: this.zone.name,
667        runCount: this.runCount
668      };
669    }
670
671  } //////////////////////////////////////////////////////
672  //////////////////////////////////////////////////////
673  ///  MICROTASK QUEUE
674  //////////////////////////////////////////////////////
675  //////////////////////////////////////////////////////
676
677
678  const symbolSetTimeout = __symbol__('setTimeout');
679
680  const symbolPromise = __symbol__('Promise');
681
682  const symbolThen = __symbol__('then');
683
684  let _microTaskQueue = [];
685  let _isDrainingMicrotaskQueue = false;
686  let nativeMicroTaskQueuePromise;
687
688  function nativeScheduleMicroTask(func) {
689    if (!nativeMicroTaskQueuePromise) {
690      if (global[symbolPromise]) {
691        nativeMicroTaskQueuePromise = global[symbolPromise].resolve(0);
692      }
693    }
694
695    if (nativeMicroTaskQueuePromise) {
696      let nativeThen = nativeMicroTaskQueuePromise[symbolThen];
697
698      if (!nativeThen) {
699        // native Promise is not patchable, we need to use `then` directly
700        // issue 1078
701        nativeThen = nativeMicroTaskQueuePromise['then'];
702      }
703
704      nativeThen.call(nativeMicroTaskQueuePromise, func);
705    } else {
706      global[symbolSetTimeout](func, 0);
707    }
708  }
709
710  function scheduleMicroTask(task) {
711    // if we are not running in any task, and there has not been anything scheduled
712    // we must bootstrap the initial task creation by manually scheduling the drain
713    if (_numberOfNestedTaskFrames === 0 && _microTaskQueue.length === 0) {
714      // We are not running in Task, so we need to kickstart the microtask queue.
715      nativeScheduleMicroTask(drainMicroTaskQueue);
716    }
717
718    task && _microTaskQueue.push(task);
719  }
720
721  function drainMicroTaskQueue() {
722    if (!_isDrainingMicrotaskQueue) {
723      _isDrainingMicrotaskQueue = true;
724
725      while (_microTaskQueue.length) {
726        const queue = _microTaskQueue;
727        _microTaskQueue = [];
728
729        for (let i = 0; i < queue.length; i++) {
730          const task = queue[i];
731
732          try {
733            task.zone.runTask(task, null, null);
734          } catch (error) {
735            _api.onUnhandledError(error);
736          }
737        }
738      }
739
740      _api.microtaskDrainDone();
741
742      _isDrainingMicrotaskQueue = false;

980    const prototypeDesc = ObjectGetOwnPropertyDescriptor(prototype, prop);
981
982    if (prototypeDesc) {
983      desc = {
984        enumerable: true,
985        configurable: true
986      };
987    }
988  } // if the descriptor not exists or is not configurable
989  // just return
990
991
992  if (!desc || !desc.configurable) {
993    return;
994  }
995
996  const onPropPatchedSymbol = zoneSymbol('on' + prop + 'patched');
997
998  if (obj.hasOwnProperty(onPropPatchedSymbol) && obj[onPropPatchedSymbol]) {
999    return;
1000  } // A property descriptor cannot have getter/setter and be writable
1001  // deleting the writable and value properties avoids this error:
1002  //
1003  // TypeError: property descriptors must not specify a value or be writable when a
1004  // getter or setter has been specified
1005
1006
1007  delete desc.writable;
1008  delete desc.value;
1009  const originalDescGet = desc.get;
1010  const originalDescSet = desc.set; // slice(2) cuz 'onclick' -> 'click', etc
1011
1012  const eventName = prop.slice(2);
1013  let eventNameSymbol = zoneSymbolEventNames$1[eventName];
1014
1015  if (!eventNameSymbol) {
1016    eventNameSymbol = zoneSymbolEventNames$1[eventName] = zoneSymbol('ON_PROPERTY' + eventName);
1017  }
1018
1019  desc.set = function (newValue) {
1020    // in some of windows's onproperty callback, this is undefined
1021    // so we need to check it
1022    let target = this;
1023
1024    if (!target && obj === _global) {
1025      target = _global;
1026    }
1027
1028    if (!target) {
1029      return;
1030    }
1031
1032    const previousValue = target[eventNameSymbol];
1033
1034    if (typeof previousValue === 'function') {
1035      target.removeEventListener(eventName, wrapFn);
1036    } // issue #978, when onload handler was added before loading zone.js
1037    // we should remove it with originalDescSet
1038
1039
1040    originalDescSet && originalDescSet.call(target, null);
1041    target[eventNameSymbol] = newValue;
1042
1043    if (typeof newValue === 'function') {
1044      target.addEventListener(eventName, wrapFn, false);
1045    }
1046  }; // The getter would return undefined for unassigned properties but the default value of an
1047  // unassigned property is null
1048
1049
1050  desc.get = function () {
1051    // in some of windows's onproperty callback, this is undefined
1052    // so we need to check it
1053    let target = this;
1054
1055    if (!target && obj === _global) {
1056      target = _global;
1057    }
1058
1059    if (!target) {
1060      return null;
1061    }
1062
1063    const listener = target[eventNameSymbol];
1064
1065    if (listener) {
1066      return listener;
1067    } else if (originalDescGet) {
1068      // result will be null when use inline event attribute,
1069      // such as <button onclick="func();">OK</button>
1070      // because the onclick function is internal raw uncompiled handler
1071      // the onclick will be evaluated when first time event was triggered or
1072      // the property is accessed, https://github.com/angular/zone.js/issues/525
1073      // so we should use original native get to retrieve the handler
1074      let value = originalDescGet.call(this);
1075
1076      if (value) {
1077        desc.set.call(this, value);
1078
1079        if (typeof target[REMOVE_ATTRIBUTE] === 'function') {
1080          target.removeAttribute(prop);
1081        }
1082
1083        return value;
1084      }
1085    }
1086
1087    return null;
1088  };
1089
1090  ObjectDefineProperty(obj, prop, desc);
1091  obj[onPropPatchedSymbol] = true;
1092}
1093
1094function patchOnProperties(obj, properties, prototype) {
1095  if (properties) {
1096    for (let i = 0; i < properties.length; i++) {
1097      patchProperty(obj, 'on' + properties[i], prototype);
1098    }
1099  } else {
1100    const onProperties = [];
1101
1102    for (const prop in obj) {
1103      if (prop.slice(0, 2) == 'on') {
1104        onProperties.push(prop);
1105      }
1106    }
1107
1108    for (let j = 0; j < onProperties.length; j++) {
1109      patchProperty(obj, onProperties[j], prototype);
1110    }
1111  }
1112}
1113
1114const originalInstanceKey = zoneSymbol('originalInstance'); // wrap some native API on `window`
1115
1116function patchClass(className) {
1117  const OriginalClass = _global[className];
1118  if (!OriginalClass) return; // keep original class in global
1119
1120  _global[zoneSymbol(className)] = OriginalClass;
1121
1122  _global[className] = function () {
1123    const a = bindArguments(arguments, className);
1124
1125    switch (a.length) {
1126      case 0:
1127        this[originalInstanceKey] = new OriginalClass();
1128        break;
1129
1130      case 1:
1131        this[originalInstanceKey] = new OriginalClass(a[0]);
1132        break;
1133
1134      case 2:
1135        this[originalInstanceKey] = new OriginalClass(a[0], a[1]);
1136        break;
1137
1138      case 3:
1139        this[originalInstanceKey] = new OriginalClass(a[0], a[1], a[2]);
1140        break;
1141
1142      case 4:
1143        this[originalInstanceKey] = new OriginalClass(a[0], a[1], a[2], a[3]);
1144        break;
1145
1146      default:
1147        throw new Error('Arg list too long.');
1148    }
1149  }; // attach original delegate to patched function
1150
1151
1152  attachOriginToPatched(_global[className], OriginalClass);
1153  const instance = new OriginalClass(function () {});
1154  let prop;
1155
1156  for (prop in instance) {
1157    // https://bugs.webkit.org/show_bug.cgi?id=44721
1158    if (className === 'XMLHttpRequest' && prop === 'responseBlob') continue;
1159
1160    (function (prop) {
1161      if (typeof instance[prop] === 'function') {
1162        _global[className].prototype[prop] = function () {
1163          return this[originalInstanceKey][prop].apply(this[originalInstanceKey], arguments);
1164        };
1165      } else {
1166        ObjectDefineProperty(_global[className].prototype, prop, {
1167          set: function (fn) {
1168            if (typeof fn === 'function') {
1169              this[originalInstanceKey][prop] = wrapWithCurrentZone(fn, className + '.' + prop); // keep callback in wrapped function so we can
1170              // use it in Function.prototype.toString to return
1171              // the native one.
1172
1173              attachOriginToPatched(this[originalInstanceKey][prop], fn);
1174            } else {
1175              this[originalInstanceKey][prop] = fn;
1176            }
1177          },
1178          get: function () {
1179            return this[originalInstanceKey][prop];
1180          }
1181        });
1182      }
1183    })(prop);
1184  }
1185
1186  for (prop in OriginalClass) {
1187    if (prop !== 'prototype' && OriginalClass.hasOwnProperty(prop)) {
1188      _global[className][prop] = OriginalClass[prop];
1189    }
1190  }
1191}
1192
1193function patchMethod(target, name, patchFn) {
1194  let proto = target;
1195
1196  while (proto && !proto.hasOwnProperty(name)) {
1197    proto = ObjectGetPrototypeOf(proto);
1198  }
1199
1200  if (!proto && target[name]) {
1201    // somehow we did not find it, but we can see it. This happens on IE for Window properties.
1202    proto = target;
1203  }
1204
1205  const delegateName = zoneSymbol(name);
1206  let delegate = null;
1207
1208  if (proto && (!(delegate = proto[delegateName]) || !proto.hasOwnProperty(delegateName))) {
1209    delegate = proto[delegateName] = proto[name]; // check whether proto[name] is writable
1210    // some property is readonly in safari, such as HtmlCanvasElement.prototype.toBlob
1211
1212    const desc = proto && ObjectGetOwnPropertyDescriptor(proto, name);
1213
1214    if (isPropertyWritable(desc)) {
1215      const patchDelegate = patchFn(delegate, delegateName, name);
1216
1217      proto[name] = function () {
1218        return patchDelegate(this, arguments);
1219      };
1220
1221      attachOriginToPatched(proto[name], delegate);
1222    }
1223  }
1224
1225  return delegate;
1226} // TODO: @JiaLiPassion, support cancel task later if necessary
1227
1228
1229function patchMacroTask(obj, funcName, metaCreator) {
1230  let setNative = null;
1231
1232  function scheduleTask(task) {
1233    const data = task.data;
1234
1235    data.args[data.cbIdx] = function () {
1236      task.invoke.apply(this, arguments);
1237    };
1238
1239    setNative.apply(data.target, data.args);
1240    return task;
1241  }
1242
1243  setNative = patchMethod(obj, funcName, delegate => function (self, args) {
1244    const meta = metaCreator(self, args);
1245
1246    if (meta.cbIdx >= 0 && typeof args[meta.cbIdx] === 'function') {
1247      return scheduleMacroTaskWithCurrentZone(meta.name, args[meta.cbIdx], meta, scheduleTask);
1248    } else {
1249      // cause an error by calling it directly.
1250      return delegate.apply(self, args);
1251    }
1252  });
1253}
1254
1255function attachOriginToPatched(patched, original) {
1256  patched[zoneSymbol('OriginalDelegate')] = original;
1257}
1258
1259let isDetectedIEOrEdge = false;
1260let ieOrEdge = false;
1261
1262function isIE() {
1263  try {
1264    const ua = internalWindow.navigator.userAgent;
1265
1266    if (ua.indexOf('MSIE ') !== -1 || ua.indexOf('Trident/') !== -1) {
1267      return true;
1268    }
1269  } catch (error) {}
1270
1271  return false;
1272}
1273
1274function isIEOrEdge() {
1275  if (isDetectedIEOrEdge) {
1276    return ieOrEdge;
1277  }
1278
1279  isDetectedIEOrEdge = true;
1280
1281  try {
1282    const ua = internalWindow.navigator.userAgent;
1283
1284    if (ua.indexOf('MSIE ') !== -1 || ua.indexOf('Trident/') !== -1 || ua.indexOf('Edge/') !== -1) {
1285      ieOrEdge = true;
1286    }
1287  } catch (error) {}
1288
1289  return ieOrEdge;
1290}
1291/**
1292 * @license
1293 * Copyright Google LLC All Rights Reserved.
1294 *
1295 * Use of this source code is governed by an MIT-style license that can be
1296 * found in the LICENSE file at https://angular.io/license
1297 */
1298
1299
1300Zone.__load_patch('ZoneAwarePromise', (global, Zone, api) => {
1301  const ObjectGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
1302  const ObjectDefineProperty = Object.defineProperty;
1303
1304  function readableObjectToString(obj) {
1305    if (obj && obj.toString === Object.prototype.toString) {
1306      const className = obj.constructor && obj.constructor.name;
1307      return (className ? className : '') + ': ' + JSON.stringify(obj);
1308    }
1309
1310    return obj ? obj.toString() : Object.prototype.toString.call(obj);
1311  }
1312
1313  const __symbol__ = api.symbol;
1314  const _uncaughtPromiseErrors = [];
1315  const isDisableWrappingUncaughtPromiseRejection = global[__symbol__('DISABLE_WRAPPING_UNCAUGHT_PROMISE_REJECTION')] === true;
1316
1317  const symbolPromise = __symbol__('Promise');
1318
1319  const symbolThen = __symbol__('then');
1320
1321  const creationTrace = '__creationTrace__';
1322
1323  api.onUnhandledError = e => {
1324    if (api.showUncaughtError()) {
1325      const rejection = e && e.rejection;
1326
1327      if (rejection) {
1328        console.error('Unhandled Promise rejection:', rejection instanceof Error ? rejection.message : rejection, '; Zone:', e.zone.name, '; Task:', e.task && e.task.source, '; Value:', rejection, rejection instanceof Error ? rejection.stack : undefined);
1329      } else {
1330        console.error(e);
1331      }
1332    }
1333  };
1334
1335  api.microtaskDrainDone = () => {
1336    while (_uncaughtPromiseErrors.length) {
1337      const uncaughtPromiseError = _uncaughtPromiseErrors.shift();
1338
1339      try {
1340        uncaughtPromiseError.zone.runGuarded(() => {
1341          if (uncaughtPromiseError.throwOriginal) {
1342            throw uncaughtPromiseError.rejection;
1343          }
1344
1345          throw uncaughtPromiseError;
1346        });
1347      } catch (error) {
1348        handleUnhandledRejection(error);
1349      }
1350    }
1351  };
1352
1353  const UNHANDLED_PROMISE_REJECTION_HANDLER_SYMBOL = __symbol__('unhandledPromiseRejectionHandler');
1354
1355  function handleUnhandledRejection(e) {
1356    api.onUnhandledError(e);
1357
1358    try {
1359      const handler = Zone[UNHANDLED_PROMISE_REJECTION_HANDLER_SYMBOL];
1360
1361      if (typeof handler === 'function') {
1362        handler.call(this, e);
1363      }
1364    } catch (err) {}
1365  }
1366
1367  function isThenable(value) {
1368    return value && value.then;
1369  }
1370
1371  function forwardResolution(value) {
1372    return value;
1373  }
1374
1375  function forwardRejection(rejection) {
1376    return ZoneAwarePromise.reject(rejection);
1377  }
1378
1379  const symbolState = __symbol__('state');
1380
1381  const symbolValue = __symbol__('value');
1382
1383  const symbolFinally = __symbol__('finally');
1384
1385  const symbolParentPromiseValue = __symbol__('parentPromiseValue');
1386
1387  const symbolParentPromiseState = __symbol__('parentPromiseState');
1388
1389  const source = 'Promise.then';
1390  const UNRESOLVED = null;
1391  const RESOLVED = true;
1392  const REJECTED = false;
1393  const REJECTED_NO_CATCH = 0;
1394
1395  function makeResolver(promise, state) {
1396    return v => {
1397      try {
1398        resolvePromise(promise, state, v);
1399      } catch (err) {
1400        resolvePromise(promise, false, err);
1401      } // Do not return value or you will break the Promise spec.
1402
1403    };
1404  }
1405
1406  const once = function () {
1407    let wasCalled = false;
1408    return function wrapper(wrappedFunction) {
1409      return function () {
1410        if (wasCalled) {
1411          return;
1412        }
1413
1414        wasCalled = true;
1415        wrappedFunction.apply(null, arguments);
1416      };
1417    };
1418  };
1419
1420  const TYPE_ERROR = 'Promise resolved with itself';
1421
1422  const CURRENT_TASK_TRACE_SYMBOL = __symbol__('currentTaskTrace'); // Promise Resolution
1423
1424
1425  function resolvePromise(promise, state, value) {
1426    const onceWrapper = once();
1427
1428    if (promise === value) {
1429      throw new TypeError(TYPE_ERROR);
1430    }
1431
1432    if (promise[symbolState] === UNRESOLVED) {
1433      // should only get value.then once based on promise spec.
1434      let then = null;
1435
1436      try {
1437        if (typeof value === 'object' || typeof value === 'function') {
1438          then = value && value.then;
1439        }
1440      } catch (err) {
1441        onceWrapper(() => {
1442          resolvePromise(promise, false, err);
1443        })();
1444        return promise;
1445      } // if (value instanceof ZoneAwarePromise) {
1446
1447
1448      if (state !== REJECTED && value instanceof ZoneAwarePromise && value.hasOwnProperty(symbolState) && value.hasOwnProperty(symbolValue) && value[symbolState] !== UNRESOLVED) {
1449        clearRejectedNoCatch(value);
1450        resolvePromise(promise, value[symbolState], value[symbolValue]);
1451      } else if (state !== REJECTED && typeof then === 'function') {
1452        try {
1453          then.call(value, onceWrapper(makeResolver(promise, state)), onceWrapper(makeResolver(promise, false)));
1454        } catch (err) {
1455          onceWrapper(() => {
1456            resolvePromise(promise, false, err);
1457          })();
1458        }
1459      } else {
1460        promise[symbolState] = state;
1461        const queue = promise[symbolValue];
1462        promise[symbolValue] = value;
1463
1464        if (promise[symbolFinally] === symbolFinally) {
1465          // the promise is generated by Promise.prototype.finally
1466          if (state === RESOLVED) {
1467            // the state is resolved, should ignore the value
1468            // and use parent promise value
1469            promise[symbolState] = promise[symbolParentPromiseState];
1470            promise[symbolValue] = promise[symbolParentPromiseValue];
1471          }
1472        } // record task information in value when error occurs, so we can
1473        // do some additional work such as render longStackTrace
1474
1475
1476        if (state === REJECTED && value instanceof Error) {
1477          // check if longStackTraceZone is here
1478          const trace = Zone.currentTask && Zone.currentTask.data && Zone.currentTask.data[creationTrace];
1479
1480          if (trace) {
1481            // only keep the long stack trace into error when in longStackTraceZone
1482            ObjectDefineProperty(value, CURRENT_TASK_TRACE_SYMBOL, {
1483              configurable: true,
1484              enumerable: false,
1485              writable: true,
1486              value: trace
1487            });
1488          }
1489        }
1490
1491        for (let i = 0; i < queue.length;) {
1492          scheduleResolveOrReject(promise, queue[i++], queue[i++], queue[i++], queue[i++]);
1493        }
1494
1495        if (queue.length == 0 && state == REJECTED) {
1496          promise[symbolState] = REJECTED_NO_CATCH;
1497          let uncaughtPromiseError = value;
1498
1499          try {
1500            // Here we throws a new Error to print more readable error log
1501            // and if the value is not an error, zone.js builds an `Error`
1502            // Object here to attach the stack information.
1503            throw new Error('Uncaught (in promise): ' + readableObjectToString(value) + (value && value.stack ? '\n' + value.stack : ''));
1504          } catch (err) {
1505            uncaughtPromiseError = err;
1506          }
1507
1508          if (isDisableWrappingUncaughtPromiseRejection) {
1509            // If disable wrapping uncaught promise reject
1510            // use the value instead of wrapping it.
1511            uncaughtPromiseError.throwOriginal = true;
1512          }
1513
1514          uncaughtPromiseError.rejection = value;
1515          uncaughtPromiseError.promise = promise;
1516          uncaughtPromiseError.zone = Zone.current;
1517          uncaughtPromiseError.task = Zone.currentTask;
1518
1519          _uncaughtPromiseErrors.push(uncaughtPromiseError);
1520
1521          api.scheduleMicroTask(); // to make sure that it is running
1522        }
1523      }
1524    } // Resolving an already resolved promise is a noop.
1525
1526
1527    return promise;
1528  }
1529
1530  const REJECTION_HANDLED_HANDLER = __symbol__('rejectionHandledHandler');
1531
1532  function clearRejectedNoCatch(promise) {
1533    if (promise[symbolState] === REJECTED_NO_CATCH) {
1534      // if the promise is rejected no catch status
1535      // and queue.length > 0, means there is a error handler
1536      // here to handle the rejected promise, we should trigger
1537      // windows.rejectionhandled eventHandler or nodejs rejectionHandled
1538      // eventHandler
1539      try {
1540        const handler = Zone[REJECTION_HANDLED_HANDLER];
1541
1542        if (handler && typeof handler === 'function') {
1543          handler.call(this, {
1544            rejection: promise[symbolValue],
1545            promise: promise
1546          });
1547        }
1548      } catch (err) {}
1549
1550      promise[symbolState] = REJECTED;
1551
1552      for (let i = 0; i < _uncaughtPromiseErrors.length; i++) {
1553        if (promise === _uncaughtPromiseErrors[i].promise) {
1554          _uncaughtPromiseErrors.splice(i, 1);
1555        }
1556      }
1557    }
1558  }
1559
1560  function scheduleResolveOrReject(promise, zone, chainPromise, onFulfilled, onRejected) {
1561    clearRejectedNoCatch(promise);
1562    const promiseState = promise[symbolState];
1563    const delegate = promiseState ? typeof onFulfilled === 'function' ? onFulfilled : forwardResolution : typeof onRejected === 'function' ? onRejected : forwardRejection;
1564    zone.scheduleMicroTask(source, () => {
1565      try {
1566        const parentPromiseValue = promise[symbolValue];
1567        const isFinallyPromise = !!chainPromise && symbolFinally === chainPromise[symbolFinally];
1568
1569        if (isFinallyPromise) {
1570          // if the promise is generated from finally call, keep parent promise's state and value
1571          chainPromise[symbolParentPromiseValue] = parentPromiseValue;
1572          chainPromise[symbolParentPromiseState] = promiseState;
1573        } // should not pass value to finally callback
1574
1575
1576        const value = zone.run(delegate, undefined, isFinallyPromise && delegate !== forwardRejection && delegate !== forwardResolution ? [] : [parentPromiseValue]);
1577        resolvePromise(chainPromise, true, value);
1578      } catch (error) {
1579        // if error occurs, should always return this error
1580        resolvePromise(chainPromise, false, error);
1581      }
1582    }, chainPromise);
1583  }
1584
1585  const ZONE_AWARE_PROMISE_TO_STRING = 'function ZoneAwarePromise() { [native code] }';
1586
1587  const noop = function () {};
1588
1589  const AggregateError = global.AggregateError;
1590
1591  class ZoneAwarePromise {
1592    static toString() {
1593      return ZONE_AWARE_PROMISE_TO_STRING;
1594    }
1595
1596    static resolve(value) {
1597      return resolvePromise(new this(null), RESOLVED, value);
1598    }
1599
1600    static reject(error) {
1601      return resolvePromise(new this(null), REJECTED, error);
1602    }
1603
1604    static any(values) {
1605      if (!values || typeof values[Symbol.iterator] !== 'function') {
1606        return Promise.reject(new AggregateError([], 'All promises were rejected'));
1607      }
1608
1609      const promises = [];
1610      let count = 0;
1611
1612      try {
1613        for (let v of values) {
1614          count++;
1615          promises.push(ZoneAwarePromise.resolve(v));
1616        }
1617      } catch (err) {
1618        return Promise.reject(new AggregateError([], 'All promises were rejected'));
1619      }
1620
1621      if (count === 0) {
1622        return Promise.reject(new AggregateError([], 'All promises were rejected'));
1623      }
1624
1625      let finished = false;
1626      const errors = [];
1627      return new ZoneAwarePromise((resolve, reject) => {
1628        for (let i = 0; i < promises.length; i++) {
1629          promises[i].then(v => {
1630            if (finished) {
1631              return;
1632            }
1633
1634            finished = true;
1635            resolve(v);
1636          }, err => {
1637            errors.push(err);
1638            count--;
1639
1640            if (count === 0) {
1641              finished = true;
1642              reject(new AggregateError(errors, 'All promises were rejected'));
1643            }
1644          });
1645        }
1646      });
1647    }
1648
1649    static race(values) {
1650      let resolve;
1651      let reject;
1652      let promise = new this((res, rej) => {
1653        resolve = res;
1654        reject = rej;
1655      });
1656
1657      function onResolve(value) {
1658        resolve(value);
1659      }
1660
1661      function onReject(error) {
1662        reject(error);
1663      }
1664
1665      for (let value of values) {
1666        if (!isThenable(value)) {
1667          value = this.resolve(value);
1668        }
1669
1670        value.then(onResolve, onReject);
1671      }
1672
1673      return promise;
1674    }
1675
1676    static all(values) {
1677      return ZoneAwarePromise.allWithCallback(values);
1678    }
1679
1680    static allSettled(values) {
1681      const P = this && this.prototype instanceof ZoneAwarePromise ? this : ZoneAwarePromise;
1682      return P.allWithCallback(values, {
1683        thenCallback: value => ({
1684          status: 'fulfilled',
1685          value
1686        }),
1687        errorCallback: err => ({
1688          status: 'rejected',
1689          reason: err
1690        })
1691      });
1692    }
1693
1694    static allWithCallback(values, callback) {
1695      let resolve;
1696      let reject;
1697      let promise = new this((res, rej) => {
1698        resolve = res;
1699        reject = rej;
1700      }); // Start at 2 to prevent prematurely resolving if .then is called immediately.
1701
1702      let unresolvedCount = 2;
1703      let valueIndex = 0;
1704      const resolvedValues = [];
1705
1706      for (let value of values) {
1707        if (!isThenable(value)) {
1708          value = this.resolve(value);
1709        }
1710
1711        const curValueIndex = valueIndex;
1712
1713        try {
1714          value.then(value => {
1715            resolvedValues[curValueIndex] = callback ? callback.thenCallback(value) : value;
1716            unresolvedCount--;
1717
1718            if (unresolvedCount === 0) {
1719              resolve(resolvedValues);
1720            }
1721          }, err => {
1722            if (!callback) {
1723              reject(err);
1724            } else {
1725              resolvedValues[curValueIndex] = callback.errorCallback(err);
1726              unresolvedCount--;
1727
1728              if (unresolvedCount === 0) {
1729                resolve(resolvedValues);
1730              }
1731            }
1732          });
1733        } catch (thenErr) {
1734          reject(thenErr);
1735        }
1736
1737        unresolvedCount++;
1738        valueIndex++;
1739      } // Make the unresolvedCount zero-based again.
1740
1741
1742      unresolvedCount -= 2;
1743
1744      if (unresolvedCount === 0) {
1745        resolve(resolvedValues);
1746      }
1747
1748      return promise;
1749    }
1750
1751    constructor(executor) {
1752      const promise = this;
1753
1754      if (!(promise instanceof ZoneAwarePromise)) {
1755        throw new Error('Must be an instanceof Promise.');
1756      }
1757
1758      promise[symbolState] = UNRESOLVED;
1759      promise[symbolValue] = []; // queue;
1760
1761      try {
1762        const onceWrapper = once();
1763        executor && executor(onceWrapper(makeResolver(promise, RESOLVED)), onceWrapper(makeResolver(promise, REJECTED)));
1764      } catch (error) {
1765        resolvePromise(promise, false, error);
1766      }
1767    }
1768
1769    get [Symbol.toStringTag]() {
1770      return 'Promise';
1771    }
1772
1773    get [Symbol.species]() {
1774      return ZoneAwarePromise;
1775    }
1776
1777    then(onFulfilled, onRejected) {
1778      var _a; // We must read `Symbol.species` safely because `this` may be anything. For instance, `this`
1779      // may be an object without a prototype (created through `Object.create(null)`); thus
1780      // `this.constructor` will be undefined. One of the use cases is SystemJS creating
1781      // prototype-less objects (modules) via `Object.create(null)`. The SystemJS creates an empty
1782      // object and copies promise properties into that object (within the `getOrCreateLoad`
1783      // function). The zone.js then checks if the resolved value has the `then` method and invokes
1784      // it with the `value` context. Otherwise, this will throw an error: `TypeError: Cannot read
1785      // properties of undefined (reading 'Symbol(Symbol.species)')`.
1786
1787
1788      let C = (_a = this.constructor) === null || _a === void 0 ? void 0 : _a[Symbol.species];
1789
1790      if (!C || typeof C !== 'function') {
1791        C = this.constructor || ZoneAwarePromise;
1792      }
1793
1794      const chainPromise = new C(noop);
1795      const zone = Zone.current;
1796
1797      if (this[symbolState] == UNRESOLVED) {
1798        this[symbolValue].push(zone, chainPromise, onFulfilled, onRejected);
1799      } else {
1800        scheduleResolveOrReject(this, zone, chainPromise, onFulfilled, onRejected);
1801      }
1802
1803      return chainPromise;
1804    }
1805
1806    catch(onRejected) {
1807      return this.then(null, onRejected);
1808    }
1809
1810    finally(onFinally) {
1811      var _a; // See comment on the call to `then` about why thee `Symbol.species` is safely accessed.
1812
1813
1814      let C = (_a = this.constructor) === null || _a === void 0 ? void 0 : _a[Symbol.species];
1815
1816      if (!C || typeof C !== 'function') {
1817        C = ZoneAwarePromise;
1818      }
1819
1820      const chainPromise = new C(noop);
1821      chainPromise[symbolFinally] = symbolFinally;
1822      const zone = Zone.current;
1823
1824      if (this[symbolState] == UNRESOLVED) {
1825        this[symbolValue].push(zone, chainPromise, onFinally, onFinally);
1826      } else {
1827        scheduleResolveOrReject(this, zone, chainPromise, onFinally, onFinally);
1828      }
1829
1830      return chainPromise;
1831    }
1832
1833  } // Protect against aggressive optimizers dropping seemingly unused properties.
1834  // E.g. Closure Compiler in advanced mode.
1835
1836
1837  ZoneAwarePromise['resolve'] = ZoneAwarePromise.resolve;
1838  ZoneAwarePromise['reject'] = ZoneAwarePromise.reject;
1839  ZoneAwarePromise['race'] = ZoneAwarePromise.race;
1840  ZoneAwarePromise['all'] = ZoneAwarePromise.all;
1841  const NativePromise = global[symbolPromise] = global['Promise'];
1842  global['Promise'] = ZoneAwarePromise;
1843
1844  const symbolThenPatched = __symbol__('thenPatched');
1845
1846  function patchThen(Ctor) {
1847    const proto = Ctor.prototype;
1848    const prop = ObjectGetOwnPropertyDescriptor(proto, 'then');
1849
1850    if (prop && (prop.writable === false || !prop.configurable)) {
1851      // check Ctor.prototype.then propertyDescriptor is writable or not
1852      // in meteor env, writable is false, we should ignore such case
1853      return;
1854    }
1855
1856    const originalThen = proto.then; // Keep a reference to the original method.
1857
1858    proto[symbolThen] = originalThen;
1859
1860    Ctor.prototype.then = function (onResolve, onReject) {
1861      const wrapped = new ZoneAwarePromise((resolve, reject) => {
1862        originalThen.call(this, resolve, reject);
1863      });
1864      return wrapped.then(onResolve, onReject);
1865    };
1866
1867    Ctor[symbolThenPatched] = true;
1868  }
1869
1870  api.patchThen = patchThen;
1871
1872  function zoneify(fn) {
1873    return function (self, args) {
1874      let resultPromise = fn.apply(self, args);
1875
1876      if (resultPromise instanceof ZoneAwarePromise) {
1877        return resultPromise;
1878      }
1879
1880      let ctor = resultPromise.constructor;
1881
1882      if (!ctor[symbolThenPatched]) {
1883        patchThen(ctor);
1884      }
1885
1886      return resultPromise;
1887    };
1888  }
1889
1890  if (NativePromise) {
1891    patchThen(NativePromise);
1892    patchMethod(global, 'fetch', delegate => zoneify(delegate));
1893  } // This is not part of public API, but it is useful for tests, so we expose it.
1894
1895
1896  Promise[Zone.__symbol__('uncaughtPromiseErrors')] = _uncaughtPromiseErrors;
1897  return ZoneAwarePromise;
1898});
1899/**
1900 * @license
1901 * Copyright Google LLC All Rights Reserved.
1902 *
1903 * Use of this source code is governed by an MIT-style license that can be
1904 * found in the LICENSE file at https://angular.io/license
1905 */
1906// override Function.prototype.toString to make zone.js patched function
1907// look like native function
1908
1909
1910Zone.__load_patch('toString', global => {
1911  // patch Func.prototype.toString to let them look like native
1912  const originalFunctionToString = Function.prototype.toString;
1913  const ORIGINAL_DELEGATE_SYMBOL = zoneSymbol('OriginalDelegate');
1914  const PROMISE_SYMBOL = zoneSymbol('Promise');
1915  const ERROR_SYMBOL = zoneSymbol('Error');
1916
1917  const newFunctionToString = function toString() {
1918    if (typeof this === 'function') {
1919      const originalDelegate = this[ORIGINAL_DELEGATE_SYMBOL];
1920
1921      if (originalDelegate) {
1922        if (typeof originalDelegate === 'function') {
1923          return originalFunctionToString.call(originalDelegate);
1924        } else {
1925          return Object.prototype.toString.call(originalDelegate);
1926        }
1927      }
1928
1929      if (this === Promise) {
1930        const nativePromise = global[PROMISE_SYMBOL];
1931
1932        if (nativePromise) {
1933          return originalFunctionToString.call(nativePromise);
1934        }
1935      }
1936
1937      if (this === Error) {
1938        const nativeError = global[ERROR_SYMBOL];
1939
1940        if (nativeError) {
1941          return originalFunctionToString.call(nativeError);
1942        }
1943      }
1944    }
1945
1946    return originalFunctionToString.call(this);
1947  };
1948
1949  newFunctionToString[ORIGINAL_DELEGATE_SYMBOL] = originalFunctionToString;
1950  Function.prototype.toString = newFunctionToString; // patch Object.prototype.toString to let them look like native
1951
1952  const originalObjectToString = Object.prototype.toString;
1953  const PROMISE_OBJECT_TO_STRING = '[object Promise]';
1954
1955  Object.prototype.toString = function () {
1956    if (typeof Promise === 'function' && this instanceof Promise) {
1957      return PROMISE_OBJECT_TO_STRING;
1958    }
1959
1960    return originalObjectToString.call(this);
1961  };
1962});
1963/**
1964 * @license
1965 * Copyright Google LLC All Rights Reserved.
1966 *
1967 * Use of this source code is governed by an MIT-style license that can be
1968 * found in the LICENSE file at https://angular.io/license
1969 */
1970
1971
1972let passiveSupported = false;
1973
1974if (typeof window !== 'undefined') {
1975  try {
1976    const options = Object.defineProperty({}, 'passive', {
1977      get: function () {
1978        passiveSupported = true;
1979      }
1980    }); // Note: We pass the `options` object as the event handler too. This is not compatible with the
1981    // signature of `addEventListener` or `removeEventListener` but enables us to remove the handler
1982    // without an actual handler.
1983
1984    window.addEventListener('test', options, options);
1985    window.removeEventListener('test', options, options);
1986  } catch (err) {
1987    passiveSupported = false;
1988  }
1989} // an identifier to tell ZoneTask do not create a new invoke closure
1990
1991
1992const OPTIMIZED_ZONE_EVENT_TASK_DATA = {
1993  useG: true
1994};
1995const zoneSymbolEventNames = {};
1996const globalSources = {};
1997const EVENT_NAME_SYMBOL_REGX = new RegExp('^' + ZONE_SYMBOL_PREFIX + '(\\w+)(true|false)$');
1998const IMMEDIATE_PROPAGATION_SYMBOL = zoneSymbol('propagationStopped');
1999
2000function prepareEventNames(eventName, eventNameToString) {
2001  const falseEventName = (eventNameToString ? eventNameToString(eventName) : eventName) + FALSE_STR;
2002  const trueEventName = (eventNameToString ? eventNameToString(eventName) : eventName) + TRUE_STR;
2003  const symbol = ZONE_SYMBOL_PREFIX + falseEventName;
2004  const symbolCapture = ZONE_SYMBOL_PREFIX + trueEventName;
2005  zoneSymbolEventNames[eventName] = {};
2006  zoneSymbolEventNames[eventName][FALSE_STR] = symbol;
2007  zoneSymbolEventNames[eventName][TRUE_STR] = symbolCapture;
2008}
2009
2010function patchEventTarget(_global, api, apis, patchOptions) {
2011  const ADD_EVENT_LISTENER = patchOptions && patchOptions.add || ADD_EVENT_LISTENER_STR;
2012  const REMOVE_EVENT_LISTENER = patchOptions && patchOptions.rm || REMOVE_EVENT_LISTENER_STR;
2013  const LISTENERS_EVENT_LISTENER = patchOptions && patchOptions.listeners || 'eventListeners';
2014  const REMOVE_ALL_LISTENERS_EVENT_LISTENER = patchOptions && patchOptions.rmAll || 'removeAllListeners';
2015  const zoneSymbolAddEventListener = zoneSymbol(ADD_EVENT_LISTENER);
2016  const ADD_EVENT_LISTENER_SOURCE = '.' + ADD_EVENT_LISTENER + ':';
2017  const PREPEND_EVENT_LISTENER = 'prependListener';
2018  const PREPEND_EVENT_LISTENER_SOURCE = '.' + PREPEND_EVENT_LISTENER + ':';
2019
2020  const invokeTask = function (task, target, event) {
2021    // for better performance, check isRemoved which is set
2022    // by removeEventListener
2023    if (task.isRemoved) {
2024      return;
2025    }
2026
2027    const delegate = task.callback;
2028
2029    if (typeof delegate === 'object' && delegate.handleEvent) {
2030      // create the bind version of handleEvent when invoke
2031      task.callback = event => delegate.handleEvent(event);
2032
2033      task.originalDelegate = delegate;
2034    } // invoke static task.invoke
2035    // need to try/catch error here, otherwise, the error in one event listener
2036    // will break the executions of the other event listeners. Also error will
2037    // not remove the event listener when `once` options is true.
2038
2039
2040    let error;
2041
2042    try {
2043      task.invoke(task, target, [event]);
2044    } catch (err) {
2045      error = err;
2046    }
2047
2048    const options = task.options;
2049
2050    if (options && typeof options === 'object' && options.once) {
2051      // if options.once is true, after invoke once remove listener here
2052      // only browser need to do this, nodejs eventEmitter will cal removeListener
2053      // inside EventEmitter.once
2054      const delegate = task.originalDelegate ? task.originalDelegate : task.callback;
2055      target[REMOVE_EVENT_LISTENER].call(target, event.type, delegate, options);
2056    }
2057
2058    return error;
2059  };
2060
2061  function globalCallback(context, event, isCapture) {
2062    // https://github.com/angular/zone.js/issues/911, in IE, sometimes
2063    // event will be undefined, so we need to use window.event
2064    event = event || _global.event;
2065
2066    if (!event) {
2067      return;
2068    } // event.target is needed for Samsung TV and SourceBuffer
2069    // || global is needed https://github.com/angular/zone.js/issues/190
2070
2071
2072    const target = context || event.target || _global;
2073    const tasks = target[zoneSymbolEventNames[event.type][isCapture ? TRUE_STR : FALSE_STR]];
2074
2075    if (tasks) {
2076      const errors = []; // invoke all tasks which attached to current target with given event.type and capture = false
2077      // for performance concern, if task.length === 1, just invoke
2078
2079      if (tasks.length === 1) {
2080        const err = invokeTask(tasks[0], target, event);
2081        err && errors.push(err);
2082      } else {
2083        // https://github.com/angular/zone.js/issues/836
2084        // copy the tasks array before invoke, to avoid
2085        // the callback will remove itself or other listener
2086        const copyTasks = tasks.slice();
2087
2088        for (let i = 0; i < copyTasks.length; i++) {
2089          if (event && event[IMMEDIATE_PROPAGATION_SYMBOL] === true) {
2090            break;
2091          }
2092
2093          const err = invokeTask(copyTasks[i], target, event);
2094          err && errors.push(err);
2095        }
2096      } // Since there is only one error, we don't need to schedule microTask
2097      // to throw the error.
2098
2099
2100      if (errors.length === 1) {
2101        throw errors[0];
2102      } else {
2103        for (let i = 0; i < errors.length; i++) {
2104          const err = errors[i];
2105          api.nativeScheduleMicroTask(() => {
2106            throw err;
2107          });
2108        }
2109      }
2110    }
2111  } // global shared zoneAwareCallback to handle all event callback with capture = false
2112
2113
2114  const globalZoneAwareCallback = function (event) {
2115    return globalCallback(this, event, false);
2116  }; // global shared zoneAwareCallback to handle all event callback with capture = true
2117
2118
2119  const globalZoneAwareCaptureCallback = function (event) {
2120    return globalCallback(this, event, true);
2121  };
2122
2123  function patchEventTargetMethods(obj, patchOptions) {
2124    if (!obj) {
2125      return false;
2126    }
2127
2128    let useGlobalCallback = true;
2129
2130    if (patchOptions && patchOptions.useG !== undefined) {
2131      useGlobalCallback = patchOptions.useG;
2132    }
2133
2134    const validateHandler = patchOptions && patchOptions.vh;
2135    let checkDuplicate = true;
2136
2137    if (patchOptions && patchOptions.chkDup !== undefined) {
2138      checkDuplicate = patchOptions.chkDup;
2139    }
2140
2141    let returnTarget = false;
2142
2143    if (patchOptions && patchOptions.rt !== undefined) {
2144      returnTarget = patchOptions.rt;
2145    }
2146
2147    let proto = obj;
2148
2149    while (proto && !proto.hasOwnProperty(ADD_EVENT_LISTENER)) {
2150      proto = ObjectGetPrototypeOf(proto);
2151    }
2152
2153    if (!proto && obj[ADD_EVENT_LISTENER]) {
2154      // somehow we did not find it, but we can see it. This happens on IE for Window properties.
2155      proto = obj;
2156    }
2157
2158    if (!proto) {
2159      return false;
2160    }
2161
2162    if (proto[zoneSymbolAddEventListener]) {
2163      return false;
2164    }
2165
2166    const eventNameToString = patchOptions && patchOptions.eventNameToString; // a shared global taskData to pass data for scheduleEventTask
2167    // so we do not need to create a new object just for pass some data
2168
2169    const taskData = {};
2170    const nativeAddEventListener = proto[zoneSymbolAddEventListener] = proto[ADD_EVENT_LISTENER];
2171    const nativeRemoveEventListener = proto[zoneSymbol(REMOVE_EVENT_LISTENER)] = proto[REMOVE_EVENT_LISTENER];
2172    const nativeListeners = proto[zoneSymbol(LISTENERS_EVENT_LISTENER)] = proto[LISTENERS_EVENT_LISTENER];
2173    const nativeRemoveAllListeners = proto[zoneSymbol(REMOVE_ALL_LISTENERS_EVENT_LISTENER)] = proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER];
2174    let nativePrependEventListener;
2175
2176    if (patchOptions && patchOptions.prepend) {
2177      nativePrependEventListener = proto[zoneSymbol(patchOptions.prepend)] = proto[patchOptions.prepend];
2178    }
2179    /**
2180     * This util function will build an option object with passive option
2181     * to handle all possible input from the user.
2182     */
2183
2184
2185    function buildEventListenerOptions(options, passive) {
2186      if (!passiveSupported && typeof options === 'object' && options) {
2187        // doesn't support passive but user want to pass an object as options.
2188        // this will not work on some old browser, so we just pass a boolean
2189        // as useCapture parameter
2190        return !!options.capture;
2191      }
2192
2193      if (!passiveSupported || !passive) {
2194        return options;
2195      }
2196
2197      if (typeof options === 'boolean') {
2198        return {
2199          capture: options,
2200          passive: true
2201        };
2202      }
2203
2204      if (!options) {
2205        return {
2206          passive: true
2207        };
2208      }
2209
2210      if (typeof options === 'object' && options.passive !== false) {
2211        return Object.assign(Object.assign({}, options), {
2212          passive: true
2213        });
2214      }
2215
2216      return options;
2217    }
2218
2219    const customScheduleGlobal = function (task) {
2220      // if there is already a task for the eventName + capture,
2221      // just return, because we use the shared globalZoneAwareCallback here.
2222      if (taskData.isExisting) {
2223        return;
2224      }
2225
2226      return nativeAddEventListener.call(taskData.target, taskData.eventName, taskData.capture ? globalZoneAwareCaptureCallback : globalZoneAwareCallback, taskData.options);
2227    };
2228
2229    const customCancelGlobal = function (task) {
2230      // if task is not marked as isRemoved, this call is directly
2231      // from Zone.prototype.cancelTask, we should remove the task
2232      // from tasksList of target first
2233      if (!task.isRemoved) {
2234        const symbolEventNames = zoneSymbolEventNames[task.eventName];
2235        let symbolEventName;
2236
2237        if (symbolEventNames) {
2238          symbolEventName = symbolEventNames[task.capture ? TRUE_STR : FALSE_STR];
2239        }
2240
2241        const existingTasks = symbolEventName && task.target[symbolEventName];
2242
2243        if (existingTasks) {
2244          for (let i = 0; i < existingTasks.length; i++) {
2245            const existingTask = existingTasks[i];
2246
2247            if (existingTask === task) {
2248              existingTasks.splice(i, 1); // set isRemoved to data for faster invokeTask check
2249
2250              task.isRemoved = true;
2251
2252              if (existingTasks.length === 0) {
2253                // all tasks for the eventName + capture have gone,
2254                // remove globalZoneAwareCallback and remove the task cache from target
2255                task.allRemoved = true;
2256                task.target[symbolEventName] = null;
2257              }
2258
2259              break;
2260            }
2261          }
2262        }
2263      } // if all tasks for the eventName + capture have gone,
2264      // we will really remove the global event callback,
2265      // if not, return
2266
2267
2268      if (!task.allRemoved) {
2269        return;
2270      }
2271
2272      return nativeRemoveEventListener.call(task.target, task.eventName, task.capture ? globalZoneAwareCaptureCallback : globalZoneAwareCallback, task.options);
2273    };
2274
2275    const customScheduleNonGlobal = function (task) {
2276      return nativeAddEventListener.call(taskData.target, taskData.eventName, task.invoke, taskData.options);
2277    };
2278
2279    const customSchedulePrepend = function (task) {
2280      return nativePrependEventListener.call(taskData.target, taskData.eventName, task.invoke, taskData.options);
2281    };
2282
2283    const customCancelNonGlobal = function (task) {
2284      return nativeRemoveEventListener.call(task.target, task.eventName, task.invoke, task.options);
2285    };
2286
2287    const customSchedule = useGlobalCallback ? customScheduleGlobal : customScheduleNonGlobal;
2288    const customCancel = useGlobalCallback ? customCancelGlobal : customCancelNonGlobal;
2289
2290    const compareTaskCallbackVsDelegate = function (task, delegate) {
2291      const typeOfDelegate = typeof delegate;
2292      return typeOfDelegate === 'function' && task.callback === delegate || typeOfDelegate === 'object' && task.originalDelegate === delegate;
2293    };
2294
2295    const compare = patchOptions && patchOptions.diff ? patchOptions.diff : compareTaskCallbackVsDelegate;
2296    const unpatchedEvents = Zone[zoneSymbol('UNPATCHED_EVENTS')];
2297
2298    const passiveEvents = _global[zoneSymbol('PASSIVE_EVENTS')];
2299
2300    const makeAddListener = function (nativeListener, addSource, customScheduleFn, customCancelFn, returnTarget = false, prepend = false) {
2301      return function () {
2302        const target = this || _global;
2303        let eventName = arguments[0];
2304
2305        if (patchOptions && patchOptions.transferEventName) {
2306          eventName = patchOptions.transferEventName(eventName);
2307        }
2308
2309        let delegate = arguments[1];
2310
2311        if (!delegate) {
2312          return nativeListener.apply(this, arguments);
2313        }
2314
2315        if (isNode && eventName === 'uncaughtException') {
2316          // don't patch uncaughtException of nodejs to prevent endless loop
2317          return nativeListener.apply(this, arguments);
2318        } // don't create the bind delegate function for handleEvent
2319        // case here to improve addEventListener performance
2320        // we will create the bind delegate when invoke
2321
2322
2323        let isHandleEvent = false;
2324
2325        if (typeof delegate !== 'function') {
2326          if (!delegate.handleEvent) {
2327            return nativeListener.apply(this, arguments);
2328          }
2329
2330          isHandleEvent = true;
2331        }
2332
2333        if (validateHandler && !validateHandler(nativeListener, delegate, target, arguments)) {
2334          return;
2335        }
2336
2337        const passive = passiveSupported && !!passiveEvents && passiveEvents.indexOf(eventName) !== -1;
2338        const options = buildEventListenerOptions(arguments[2], passive);
2339
2340        if (unpatchedEvents) {
2341          // check unpatched list
2342          for (let i = 0; i < unpatchedEvents.length; i++) {
2343            if (eventName === unpatchedEvents[i]) {
2344              if (passive) {
2345                return nativeListener.call(target, eventName, delegate, options);
2346              } else {
2347                return nativeListener.apply(this, arguments);
2348              }
2349            }
2350          }
2351        }
2352
2353        const capture = !options ? false : typeof options === 'boolean' ? true : options.capture;
2354        const once = options && typeof options === 'object' ? options.once : false;
2355        const zone = Zone.current;
2356        let symbolEventNames = zoneSymbolEventNames[eventName];
2357
2358        if (!symbolEventNames) {
2359          prepareEventNames(eventName, eventNameToString);
2360          symbolEventNames = zoneSymbolEventNames[eventName];
2361        }
2362
2363        const symbolEventName = symbolEventNames[capture ? TRUE_STR : FALSE_STR];
2364        let existingTasks = target[symbolEventName];
2365        let isExisting = false;
2366
2367        if (existingTasks) {
2368          // already have task registered
2369          isExisting = true;
2370
2371          if (checkDuplicate) {
2372            for (let i = 0; i < existingTasks.length; i++) {
2373              if (compare(existingTasks[i], delegate)) {
2374                // same callback, same capture, same event name, just return
2375                return;
2376              }
2377            }
2378          }
2379        } else {
2380          existingTasks = target[symbolEventName] = [];
2381        }
2382
2383        let source;
2384        const constructorName = target.constructor['name'];
2385        const targetSource = globalSources[constructorName];
2386
2387        if (targetSource) {
2388          source = targetSource[eventName];
2389        }
2390
2391        if (!source) {
2392          source = constructorName + addSource + (eventNameToString ? eventNameToString(eventName) : eventName);
2393        } // do not create a new object as task.data to pass those things
2394        // just use the global shared one
2395
2396
2397        taskData.options = options;
2398
2399        if (once) {
2400          // if addEventListener with once options, we don't pass it to
2401          // native addEventListener, instead we keep the once setting
2402          // and handle ourselves.
2403          taskData.options.once = false;
2404        }
2405
2406        taskData.target = target;
2407        taskData.capture = capture;
2408        taskData.eventName = eventName;
2409        taskData.isExisting = isExisting;
2410        const data = useGlobalCallback ? OPTIMIZED_ZONE_EVENT_TASK_DATA : undefined; // keep taskData into data to allow onScheduleEventTask to access the task information
2411
2412        if (data) {
2413          data.taskData = taskData;
2414        }
2415
2416        const task = zone.scheduleEventTask(source, delegate, data, customScheduleFn, customCancelFn); // should clear taskData.target to avoid memory leak
2417        // issue, https://github.com/angular/angular/issues/20442
2418
2419        taskData.target = null; // need to clear up taskData because it is a global object
2420
2421        if (data) {
2422          data.taskData = null;
2423        } // have to save those information to task in case
2424        // application may call task.zone.cancelTask() directly
2425
2426
2427        if (once) {
2428          options.once = true;
2429        }
2430
2431        if (!(!passiveSupported && typeof task.options === 'boolean')) {
2432          // if not support passive, and we pass an option object
2433          // to addEventListener, we should save the options to task
2434          task.options = options;
2435        }
2436
2437        task.target = target;
2438        task.capture = capture;
2439        task.eventName = eventName;
2440
2441        if (isHandleEvent) {
2442          // save original delegate for compare to check duplicate
2443          task.originalDelegate = delegate;
2444        }
2445
2446        if (!prepend) {
2447          existingTasks.push(task);
2448        } else {
2449          existingTasks.unshift(task);
2450        }
2451
2452        if (returnTarget) {
2453          return target;
2454        }
2455      };
2456    };
2457
2458    proto[ADD_EVENT_LISTENER] = makeAddListener(nativeAddEventListener, ADD_EVENT_LISTENER_SOURCE, customSchedule, customCancel, returnTarget);
2459
2460    if (nativePrependEventListener) {
2461      proto[PREPEND_EVENT_LISTENER] = makeAddListener(nativePrependEventListener, PREPEND_EVENT_LISTENER_SOURCE, customSchedulePrepend, customCancel, returnTarget, true);
2462    }
2463
2464    proto[REMOVE_EVENT_LISTENER] = function () {
2465      const target = this || _global;
2466      let eventName = arguments[0];
2467
2468      if (patchOptions && patchOptions.transferEventName) {
2469        eventName = patchOptions.transferEventName(eventName);
2470      }
2471
2472      const options = arguments[2];
2473      const capture = !options ? false : typeof options === 'boolean' ? true : options.capture;
2474      const delegate = arguments[1];
2475
2476      if (!delegate) {
2477        return nativeRemoveEventListener.apply(this, arguments);
2478      }
2479
2480      if (validateHandler && !validateHandler(nativeRemoveEventListener, delegate, target, arguments)) {
2481        return;
2482      }
2483
2484      const symbolEventNames = zoneSymbolEventNames[eventName];
2485      let symbolEventName;
2486
2487      if (symbolEventNames) {
2488        symbolEventName = symbolEventNames[capture ? TRUE_STR : FALSE_STR];
2489      }
2490
2491      const existingTasks = symbolEventName && target[symbolEventName];
2492
2493      if (existingTasks) {
2494        for (let i = 0; i < existingTasks.length; i++) {
2495          const existingTask = existingTasks[i];
2496
2497          if (compare(existingTask, delegate)) {
2498            existingTasks.splice(i, 1); // set isRemoved to data for faster invokeTask check
2499
2500            existingTask.isRemoved = true;
2501
2502            if (existingTasks.length === 0) {
2503              // all tasks for the eventName + capture have gone,
2504              // remove globalZoneAwareCallback and remove the task cache from target
2505              existingTask.allRemoved = true;
2506              target[symbolEventName] = null; // in the target, we have an event listener which is added by on_property
2507              // such as target.onclick = function() {}, so we need to clear this internal
2508              // property too if all delegates all removed
2509
2510              if (typeof eventName === 'string') {
2511                const onPropertySymbol = ZONE_SYMBOL_PREFIX + 'ON_PROPERTY' + eventName;
2512                target[onPropertySymbol] = null;
2513              }
2514            }
2515
2516            existingTask.zone.cancelTask(existingTask);
2517
2518            if (returnTarget) {
2519              return target;
2520            }
2521
2522            return;
2523          }
2524        }
2525      } // issue 930, didn't find the event name or callback
2526      // from zone kept existingTasks, the callback maybe
2527      // added outside of zone, we need to call native removeEventListener
2528      // to try to remove it.
2529
2530
2531      return nativeRemoveEventListener.apply(this, arguments);
2532    };
2533
2534    proto[LISTENERS_EVENT_LISTENER] = function () {
2535      const target = this || _global;
2536      let eventName = arguments[0];
2537
2538      if (patchOptions && patchOptions.transferEventName) {
2539        eventName = patchOptions.transferEventName(eventName);
2540      }
2541
2542      const listeners = [];
2543      const tasks = findEventTasks(target, eventNameToString ? eventNameToString(eventName) : eventName);
2544
2545      for (let i = 0; i < tasks.length; i++) {
2546        const task = tasks[i];
2547        let delegate = task.originalDelegate ? task.originalDelegate : task.callback;
2548        listeners.push(delegate);
2549      }
2550
2551      return listeners;
2552    };
2553
2554    proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER] = function () {
2555      const target = this || _global;
2556      let eventName = arguments[0];
2557
2558      if (!eventName) {
2559        const keys = Object.keys(target);
2560
2561        for (let i = 0; i < keys.length; i++) {
2562          const prop = keys[i];
2563          const match = EVENT_NAME_SYMBOL_REGX.exec(prop);
2564          let evtName = match && match[1]; // in nodejs EventEmitter, removeListener event is
2565          // used for monitoring the removeListener call,
2566          // so just keep removeListener eventListener until
2567          // all other eventListeners are removed
2568
2569          if (evtName && evtName !== 'removeListener') {
2570            this[REMOVE_ALL_LISTENERS_EVENT_LISTENER].call(this, evtName);
2571          }
2572        } // remove removeListener listener finally
2573
2574
2575        this[REMOVE_ALL_LISTENERS_EVENT_LISTENER].call(this, 'removeListener');
2576      } else {
2577        if (patchOptions && patchOptions.transferEventName) {
2578          eventName = patchOptions.transferEventName(eventName);
2579        }
2580
2581        const symbolEventNames = zoneSymbolEventNames[eventName];
2582
2583        if (symbolEventNames) {
2584          const symbolEventName = symbolEventNames[FALSE_STR];
2585          const symbolCaptureEventName = symbolEventNames[TRUE_STR];
2586          const tasks = target[symbolEventName];
2587          const captureTasks = target[symbolCaptureEventName];
2588
2589          if (tasks) {
2590            const removeTasks = tasks.slice();
2591
2592            for (let i = 0; i < removeTasks.length; i++) {
2593              const task = removeTasks[i];
2594              let delegate = task.originalDelegate ? task.originalDelegate : task.callback;
2595              this[REMOVE_EVENT_LISTENER].call(this, eventName, delegate, task.options);
2596            }
2597          }
2598
2599          if (captureTasks) {
2600            const removeTasks = captureTasks.slice();
2601
2602            for (let i = 0; i < removeTasks.length; i++) {
2603              const task = removeTasks[i];
2604              let delegate = task.originalDelegate ? task.originalDelegate : task.callback;
2605              this[REMOVE_EVENT_LISTENER].call(this, eventName, delegate, task.options);
2606            }
2607          }
2608        }
2609      }
2610
2611      if (returnTarget) {
2612        return this;
2613      }
2614    }; // for native toString patch
2615
2616
2617    attachOriginToPatched(proto[ADD_EVENT_LISTENER], nativeAddEventListener);
2618    attachOriginToPatched(proto[REMOVE_EVENT_LISTENER], nativeRemoveEventListener);
2619
2620    if (nativeRemoveAllListeners) {
2621      attachOriginToPatched(proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER], nativeRemoveAllListeners);
2622    }
2623
2624    if (nativeListeners) {
2625      attachOriginToPatched(proto[LISTENERS_EVENT_LISTENER], nativeListeners);
2626    }
2627
2628    return true;
2629  }
2630
2631  let results = [];
2632
2633  for (let i = 0; i < apis.length; i++) {
2634    results[i] = patchEventTargetMethods(apis[i], patchOptions);
2635  }
2636
2637  return results;
2638}
2639
2640function findEventTasks(target, eventName) {
2641  if (!eventName) {
2642    const foundTasks = [];
2643
2644    for (let prop in target) {
2645      const match = EVENT_NAME_SYMBOL_REGX.exec(prop);
2646      let evtName = match && match[1];
2647
2648      if (evtName && (!eventName || evtName === eventName)) {
2649        const tasks = target[prop];
2650
2651        if (tasks) {
2652          for (let i = 0; i < tasks.length; i++) {
2653            foundTasks.push(tasks[i]);
2654          }
2655        }
2656      }
2657    }
2658
2659    return foundTasks;
2660  }
2661
2662  let symbolEventName = zoneSymbolEventNames[eventName];
2663
2664  if (!symbolEventName) {
2665    prepareEventNames(eventName);
2666    symbolEventName = zoneSymbolEventNames[eventName];
2667  }
2668
2669  const captureFalseTasks = target[symbolEventName[FALSE_STR]];
2670  const captureTrueTasks = target[symbolEventName[TRUE_STR]];
2671
2672  if (!captureFalseTasks) {
2673    return captureTrueTasks ? captureTrueTasks.slice() : [];
2674  } else {
2675    return captureTrueTasks ? captureFalseTasks.concat(captureTrueTasks) : captureFalseTasks.slice();
2676  }
2677}
2678
2679function patchEventPrototype(global, api) {
2680  const Event = global['Event'];
2681
2682  if (Event && Event.prototype) {
2683    api.patchMethod(Event.prototype, 'stopImmediatePropagation', delegate => function (self, args) {
2684      self[IMMEDIATE_PROPAGATION_SYMBOL] = true; // we need to call the native stopImmediatePropagation
2685      // in case in some hybrid application, some part of
2686      // application will be controlled by zone, some are not
2687
2688      delegate && delegate.apply(self, args);
2689    });
2690  }
2691}
2692/**
2693 * @license
2694 * Copyright Google LLC All Rights Reserved.
2695 *
2696 * Use of this source code is governed by an MIT-style license that can be
2697 * found in the LICENSE file at https://angular.io/license
2698 */
2699
2700
2701function patchCallbacks(api, target, targetName, method, callbacks) {
2702  const symbol = Zone.__symbol__(method);
2703
2704  if (target[symbol]) {
2705    return;
2706  }
2707
2708  const nativeDelegate = target[symbol] = target[method];
2709
2710  target[method] = function (name, opts, options) {
2711    if (opts && opts.prototype) {
2712      callbacks.forEach(function (callback) {
2713        const source = `${targetName}.${method}::` + callback;
2714        const prototype = opts.prototype; // Note: the `patchCallbacks` is used for patching the `document.registerElement` and
2715        // `customElements.define`. We explicitly wrap the patching code into try-catch since
2716        // callbacks may be already patched by other web components frameworks (e.g. LWC