"use strict";
(self["webpackChunkroadrecon"] = self["webpackChunkroadrecon"] || []).push([["polyfills"],{

/***/ 7435:
/*!**************************!*\
  !*** ./src/polyfills.ts ***!
  \**************************/
/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {

__webpack_require__.r(__webpack_exports__);
/* harmony import */ var zone_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! zone.js */ 4946);
/* harmony import */ var zone_js__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(zone_js__WEBPACK_IMPORTED_MODULE_0__);
/**
 * This file includes polyfills needed by Angular and is loaded before the app.
 * You can add your own extra polyfills to this file.
 *
 * This file is divided into 2 sections:
 *   1. Browser polyfills. These are applied before loading ZoneJS and are sorted by browsers.
 *   2. Application imports. Files imported after ZoneJS that should be loaded before your main
 *      file.
 *
 * The current setup is for so-called "evergreen" browsers; the last versions of browsers that
 * automatically update themselves. This includes Safari >= 10, Chrome >= 55 (including Opera),
 * Edge >= 13 on the desktop, and iOS 10 and Chrome on mobile.
 *
 * Learn more in https://angular.io/guide/browser-support
 */
/***************************************************************************************************
 * BROWSER POLYFILLS
 */
/**
 * By default, zone.js will patch all possible macroTask and DomEvents
 * user can disable parts of macroTask/DomEvents patch by setting following flags
 * because those flags need to be set before `zone.js` being loaded, and webpack
 * will put import in the top of bundle, so user need to create a separate file
 * in this directory (for example: zone-flags.ts), and put the following flags
 * into that file, and then add the following code before importing zone.js.
 * import './zone-flags.ts';
 *
 * The flags allowed in zone-flags.ts are listed here.
 *
 * The following flags will work for all browsers.
 *
 * (window as any).__Zone_disable_requestAnimationFrame = true; // disable patch requestAnimationFrame
 * (window as any).__Zone_disable_on_property = true; // disable patch onProperty such as onclick
 * (window as any).__zone_symbol__UNPATCHED_EVENTS = ['scroll', 'mousemove']; // disable patch specified eventNames
 *
 *  in IE/Edge developer tools, the addEventListener will also be wrapped by zone.js
 *  with the following flag, it will bypass `zone.js` patch for IE/Edge
 *
 *  (window as any).__Zone_enable_cross_context_check = true;
 *
 */
/***************************************************************************************************
 * Zone JS is required by default for Angular itself.
 */
 // Included with Angular CLI.
/***************************************************************************************************
 * APPLICATION IMPORTS
 */


/***/ }),

/***/ 4946:
/*!***********************************************!*\
  !*** ./node_modules/zone.js/fesm2015/zone.js ***!
  \***********************************************/
/***/ (() => {


/**
 * @license Angular v12.0.0-next.0
 * (c) 2010-2020 Google LLC. https://angular.io/
 * License: MIT
 */

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

const Zone$1 = function (global) {
  const performance = global['performance'];

  function mark(name) {
    performance && performance['mark'] && performance['mark'](name);
  }

  function performanceMeasure(name, label) {
    performance && performance['measure'] && performance['measure'](name, label);
  }

  mark('Zone'); // Initialize before it's accessed below.
  // __Zone_symbol_prefix global can be used to override the default zone
  // symbol prefix with a custom one if needed.

  const symbolPrefix = global['__Zone_symbol_prefix'] || '__zone_symbol__';

  function __symbol__(name) {
    return symbolPrefix + name;
  }

  const checkDuplicate = global[__symbol__('forceDuplicateZoneCheck')] === true;

  if (global['Zone']) {
    // if global['Zone'] already exists (maybe zone.js was already loaded or
    // some other lib also registered a global object named Zone), we may need
    // to throw an error, but sometimes user may not want this error.
    // For example,
    // we have two web pages, page1 includes zone.js, page2 doesn't.
    // and the 1st time user load page1 and page2, everything work fine,
    // but when user load page2 again, error occurs because global['Zone'] already exists.
    // so we add a flag to let user choose whether to throw this error or not.
    // By default, if existing Zone is from zone.js, we will not throw the error.
    if (checkDuplicate || typeof global['Zone'].__symbol__ !== 'function') {
      throw new Error('Zone already loaded.');
    } else {
      return global['Zone'];
    }
  }

  class Zone {
    constructor(parent, zoneSpec) {
      this._parent = parent;
      this._name = zoneSpec ? zoneSpec.name || 'unnamed' : '<root>';
      this._properties = zoneSpec && zoneSpec.properties || {};
      this._zoneDelegate = new ZoneDelegate(this, this._parent && this._parent._zoneDelegate, zoneSpec);
    }

    static assertZonePatched() {
      if (global['Promise'] !== patches['ZoneAwarePromise']) {
        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.)');
      }
    }

    static get root() {
      let zone = Zone.current;

      while (zone.parent) {
        zone = zone.parent;
      }

      return zone;
    }

    static get current() {
      return _currentZoneFrame.zone;
    }

    static get currentTask() {
      return _currentTask;
    } // tslint:disable-next-line:require-internal-with-underscore


    static __load_patch(name, fn, ignoreDuplicate = false) {
      if (patches.hasOwnProperty(name)) {
        // `checkDuplicate` option is defined from global variable
        // so it works for all modules.
        // `ignoreDuplicate` can work for the specified module
        if (!ignoreDuplicate && checkDuplicate) {
          throw Error('Already loaded patch: ' + name);
        }
      } else if (!global['__Zone_disable_' + name]) {
        const perfName = 'Zone:' + name;
        mark(perfName);
        patches[name] = fn(global, Zone, _api);
        performanceMeasure(perfName, perfName);
      }
    }

    get parent() {
      return this._parent;
    }

    get name() {
      return this._name;
    }

    get(key) {
      const zone = this.getZoneWith(key);
      if (zone) return zone._properties[key];
    }

    getZoneWith(key) {
      let current = this;

      while (current) {
        if (current._properties.hasOwnProperty(key)) {
          return current;
        }

        current = current._parent;
      }

      return null;
    }

    fork(zoneSpec) {
      if (!zoneSpec) throw new Error('ZoneSpec required!');
      return this._zoneDelegate.fork(this, zoneSpec);
    }

    wrap(callback, source) {
      if (typeof callback !== 'function') {
        throw new Error('Expecting function got: ' + callback);
      }

      const _callback = this._zoneDelegate.intercept(this, callback, source);

      const zone = this;
      return function () {
        return zone.runGuarded(_callback, this, arguments, source);
      };
    }

    run(callback, applyThis, applyArgs, source) {
      _currentZoneFrame = {
        parent: _currentZoneFrame,
        zone: this
      };

      try {
        return this._zoneDelegate.invoke(this, callback, applyThis, applyArgs, source);
      } finally {
        _currentZoneFrame = _currentZoneFrame.parent;
      }
    }

    runGuarded(callback, applyThis = null, applyArgs, source) {
      _currentZoneFrame = {
        parent: _currentZoneFrame,
        zone: this
      };

      try {
        try {
          return this._zoneDelegate.invoke(this, callback, applyThis, applyArgs, source);
        } catch (error) {
          if (this._zoneDelegate.handleError(this, error)) {
            throw error;
          }
        }
      } finally {
        _currentZoneFrame = _currentZoneFrame.parent;
      }
    }

    runTask(task, applyThis, applyArgs) {
      if (task.zone != this) {
        throw new Error('A task can only be run in the zone of creation! (Creation: ' + (task.zone || NO_ZONE).name + '; Execution: ' + this.name + ')');
      } // https://github.com/angular/zone.js/issues/778, sometimes eventTask
      // will run in notScheduled(canceled) state, we should not try to
      // run such kind of task but just return


      if (task.state === notScheduled && (task.type === eventTask || task.type === macroTask)) {
        return;
      }

      const reEntryGuard = task.state != running;
      reEntryGuard && task._transitionTo(running, scheduled);
      task.runCount++;
      const previousTask = _currentTask;
      _currentTask = task;
      _currentZoneFrame = {
        parent: _currentZoneFrame,
        zone: this
      };

      try {
        if (task.type == macroTask && task.data && !task.data.isPeriodic) {
          task.cancelFn = undefined;
        }

        try {
          return this._zoneDelegate.invokeTask(this, task, applyThis, applyArgs);
        } catch (error) {
          if (this._zoneDelegate.handleError(this, error)) {
            throw error;
          }
        }
      } finally {
        // if the task's state is notScheduled or unknown, then it has already been cancelled
        // we should not reset the state to scheduled
        if (task.state !== notScheduled && task.state !== unknown) {
          if (task.type == eventTask || task.data && task.data.isPeriodic) {
            reEntryGuard && task._transitionTo(scheduled, running);
          } else {
            task.runCount = 0;

            this._updateTaskCount(task, -1);

            reEntryGuard && task._transitionTo(notScheduled, running, notScheduled);
          }
        }

        _currentZoneFrame = _currentZoneFrame.parent;
        _currentTask = previousTask;
      }
    }

    scheduleTask(task) {
      if (task.zone && task.zone !== this) {
        // check if the task was rescheduled, the newZone
        // should not be the children of the original zone
        let newZone = this;

        while (newZone) {
          if (newZone === task.zone) {
            throw Error(`can not reschedule task to ${this.name} which is descendants of the original zone ${task.zone.name}`);
          }

          newZone = newZone.parent;
        }
      }

      task._transitionTo(scheduling, notScheduled);

      const zoneDelegates = [];
      task._zoneDelegates = zoneDelegates;
      task._zone = this;

      try {
        task = this._zoneDelegate.scheduleTask(this, task);
      } catch (err) {
        // should set task's state to unknown when scheduleTask throw error
        // because the err may from reschedule, so the fromState maybe notScheduled
        task._transitionTo(unknown, scheduling, notScheduled); // TODO: @JiaLiPassion, should we check the result from handleError?


        this._zoneDelegate.handleError(this, err);

        throw err;
      }

      if (task._zoneDelegates === zoneDelegates) {
        // we have to check because internally the delegate can reschedule the task.
        this._updateTaskCount(task, 1);
      }

      if (task.state == scheduling) {
        task._transitionTo(scheduled, scheduling);
      }

      return task;
    }

    scheduleMicroTask(source, callback, data, customSchedule) {
      return this.scheduleTask(new ZoneTask(microTask, source, callback, data, customSchedule, undefined));
    }

    scheduleMacroTask(source, callback, data, customSchedule, customCancel) {
      return this.scheduleTask(new ZoneTask(macroTask, source, callback, data, customSchedule, customCancel));
    }

    scheduleEventTask(source, callback, data, customSchedule, customCancel) {
      return this.scheduleTask(new ZoneTask(eventTask, source, callback, data, customSchedule, customCancel));
    }

    cancelTask(task) {
      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 + ')');

      task._transitionTo(canceling, scheduled, running);

      try {
        this._zoneDelegate.cancelTask(this, task);
      } catch (err) {
        // if error occurs when cancelTask, transit the state to unknown
        task._transitionTo(unknown, canceling);

        this._zoneDelegate.handleError(this, err);

        throw err;
      }

      this._updateTaskCount(task, -1);

      task._transitionTo(notScheduled, canceling);

      task.runCount = 0;
      return task;
    }

    _updateTaskCount(task, count) {
      const zoneDelegates = task._zoneDelegates;

      if (count == -1) {
        task._zoneDelegates = null;
      }

      for (let i = 0; i < zoneDelegates.length; i++) {
        zoneDelegates[i]._updateTaskCount(task.type, count);
      }
    }

  } // tslint:disable-next-line:require-internal-with-underscore


  Zone.__symbol__ = __symbol__;
  const DELEGATE_ZS = {
    name: '',
    onHasTask: (delegate, _, target, hasTaskState) => delegate.hasTask(target, hasTaskState),
    onScheduleTask: (delegate, _, target, task) => delegate.scheduleTask(target, task),
    onInvokeTask: (delegate, _, target, task, applyThis, applyArgs) => delegate.invokeTask(target, task, applyThis, applyArgs),
    onCancelTask: (delegate, _, target, task) => delegate.cancelTask(target, task)
  };

  class ZoneDelegate {
    constructor(zone, parentDelegate, zoneSpec) {
      this._taskCounts = {
        'microTask': 0,
        'macroTask': 0,
        'eventTask': 0
      };
      this.zone = zone;
      this._parentDelegate = parentDelegate;
      this._forkZS = zoneSpec && (zoneSpec && zoneSpec.onFork ? zoneSpec : parentDelegate._forkZS);
      this._forkDlgt = zoneSpec && (zoneSpec.onFork ? parentDelegate : parentDelegate._forkDlgt);
      this._forkCurrZone = zoneSpec && (zoneSpec.onFork ? this.zone : parentDelegate._forkCurrZone);
      this._interceptZS = zoneSpec && (zoneSpec.onIntercept ? zoneSpec : parentDelegate._interceptZS);
      this._interceptDlgt = zoneSpec && (zoneSpec.onIntercept ? parentDelegate : parentDelegate._interceptDlgt);
      this._interceptCurrZone = zoneSpec && (zoneSpec.onIntercept ? this.zone : parentDelegate._interceptCurrZone);
      this._invokeZS = zoneSpec && (zoneSpec.onInvoke ? zoneSpec : parentDelegate._invokeZS);
      this._invokeDlgt = zoneSpec && (zoneSpec.onInvoke ? parentDelegate : parentDelegate._invokeDlgt);
      this._invokeCurrZone = zoneSpec && (zoneSpec.onInvoke ? this.zone : parentDelegate._invokeCurrZone);
      this._handleErrorZS = zoneSpec && (zoneSpec.onHandleError ? zoneSpec : parentDelegate._handleErrorZS);
      this._handleErrorDlgt = zoneSpec && (zoneSpec.onHandleError ? parentDelegate : parentDelegate._handleErrorDlgt);
      this._handleErrorCurrZone = zoneSpec && (zoneSpec.onHandleError ? this.zone : parentDelegate._handleErrorCurrZone);
      this._scheduleTaskZS = zoneSpec && (zoneSpec.onScheduleTask ? zoneSpec : parentDelegate._scheduleTaskZS);
      this._scheduleTaskDlgt = zoneSpec && (zoneSpec.onScheduleTask ? parentDelegate : parentDelegate._scheduleTaskDlgt);
      this._scheduleTaskCurrZone = zoneSpec && (zoneSpec.onScheduleTask ? this.zone : parentDelegate._scheduleTaskCurrZone);
      this._invokeTaskZS = zoneSpec && (zoneSpec.onInvokeTask ? zoneSpec : parentDelegate._invokeTaskZS);
      this._invokeTaskDlgt = zoneSpec && (zoneSpec.onInvokeTask ? parentDelegate : parentDelegate._invokeTaskDlgt);
      this._invokeTaskCurrZone = zoneSpec && (zoneSpec.onInvokeTask ? this.zone : parentDelegate._invokeTaskCurrZone);
      this._cancelTaskZS = zoneSpec && (zoneSpec.onCancelTask ? zoneSpec : parentDelegate._cancelTaskZS);
      this._cancelTaskDlgt = zoneSpec && (zoneSpec.onCancelTask ? parentDelegate : parentDelegate._cancelTaskDlgt);
      this._cancelTaskCurrZone = zoneSpec && (zoneSpec.onCancelTask ? this.zone : parentDelegate._cancelTaskCurrZone);
      this._hasTaskZS = null;
      this._hasTaskDlgt = null;
      this._hasTaskDlgtOwner = null;
      this._hasTaskCurrZone = null;
      const zoneSpecHasTask = zoneSpec && zoneSpec.onHasTask;
      const parentHasTask = parentDelegate && parentDelegate._hasTaskZS;

      if (zoneSpecHasTask || parentHasTask) {
        // If we need to report hasTask, than this ZS needs to do ref counting on tasks. In such
        // a case all task related interceptors must go through this ZD. We can't short circuit it.
        this._hasTaskZS = zoneSpecHasTask ? zoneSpec : DELEGATE_ZS;
        this._hasTaskDlgt = parentDelegate;
        this._hasTaskDlgtOwner = this;
        this._hasTaskCurrZone = zone;

        if (!zoneSpec.onScheduleTask) {
          this._scheduleTaskZS = DELEGATE_ZS;
          this._scheduleTaskDlgt = parentDelegate;
          this._scheduleTaskCurrZone = this.zone;
        }

        if (!zoneSpec.onInvokeTask) {
          this._invokeTaskZS = DELEGATE_ZS;
          this._invokeTaskDlgt = parentDelegate;
          this._invokeTaskCurrZone = this.zone;
        }

        if (!zoneSpec.onCancelTask) {
          this._cancelTaskZS = DELEGATE_ZS;
          this._cancelTaskDlgt = parentDelegate;
          this._cancelTaskCurrZone = this.zone;
        }
      }
    }

    fork(targetZone, zoneSpec) {
      return this._forkZS ? this._forkZS.onFork(this._forkDlgt, this.zone, targetZone, zoneSpec) : new Zone(targetZone, zoneSpec);
    }

    intercept(targetZone, callback, source) {
      return this._interceptZS ? this._interceptZS.onIntercept(this._interceptDlgt, this._interceptCurrZone, targetZone, callback, source) : callback;
    }

    invoke(targetZone, callback, applyThis, applyArgs, source) {
      return this._invokeZS ? this._invokeZS.onInvoke(this._invokeDlgt, this._invokeCurrZone, targetZone, callback, applyThis, applyArgs, source) : callback.apply(applyThis, applyArgs);
    }

    handleError(targetZone, error) {
      return this._handleErrorZS ? this._handleErrorZS.onHandleError(this._handleErrorDlgt, this._handleErrorCurrZone, targetZone, error) : true;
    }

    scheduleTask(targetZone, task) {
      let returnTask = task;

      if (this._scheduleTaskZS) {
        if (this._hasTaskZS) {
          returnTask._zoneDelegates.push(this._hasTaskDlgtOwner);
        } // clang-format off


        returnTask = this._scheduleTaskZS.onScheduleTask(this._scheduleTaskDlgt, this._scheduleTaskCurrZone, targetZone, task); // clang-format on

        if (!returnTask) returnTask = task;
      } else {
        if (task.scheduleFn) {
          task.scheduleFn(task);
        } else if (task.type == microTask) {
          scheduleMicroTask(task);
        } else {
          throw new Error('Task is missing scheduleFn.');
        }
      }

      return returnTask;
    }

    invokeTask(targetZone, task, applyThis, applyArgs) {
      return this._invokeTaskZS ? this._invokeTaskZS.onInvokeTask(this._invokeTaskDlgt, this._invokeTaskCurrZone, targetZone, task, applyThis, applyArgs) : task.callback.apply(applyThis, applyArgs);
    }

    cancelTask(targetZone, task) {
      let value;

      if (this._cancelTaskZS) {
        value = this._cancelTaskZS.onCancelTask(this._cancelTaskDlgt, this._cancelTaskCurrZone, targetZone, task);
      } else {
        if (!task.cancelFn) {
          throw Error('Task is not cancelable');
        }

        value = task.cancelFn(task);
      }

      return value;
    }

    hasTask(targetZone, isEmpty) {
      // hasTask should not throw error so other ZoneDelegate
      // can still trigger hasTask callback
      try {
        this._hasTaskZS && this._hasTaskZS.onHasTask(this._hasTaskDlgt, this._hasTaskCurrZone, targetZone, isEmpty);
      } catch (err) {
        this.handleError(targetZone, err);
      }
    } // tslint:disable-next-line:require-internal-with-underscore


    _updateTaskCount(type, count) {
      const counts = this._taskCounts;
      const prev = counts[type];
      const next = counts[type] = prev + count;

      if (next < 0) {
        throw new Error('More tasks executed then were scheduled.');
      }

      if (prev == 0 || next == 0) {
        const isEmpty = {
          microTask: counts['microTask'] > 0,
          macroTask: counts['macroTask'] > 0,
          eventTask: counts['eventTask'] > 0,
          change: type
        };
        this.hasTask(this.zone, isEmpty);
      }
    }

  }

  class ZoneTask {
    constructor(type, source, callback, options, scheduleFn, cancelFn) {
      // tslint:disable-next-line:require-internal-with-underscore
      this._zone = null;
      this.runCount = 0; // tslint:disable-next-line:require-internal-with-underscore

      this._zoneDelegates = null; // tslint:disable-next-line:require-internal-with-underscore

      this._state = 'notScheduled';
      this.type = type;
      this.source = source;
      this.data = options;
      this.scheduleFn = scheduleFn;
      this.cancelFn = cancelFn;

      if (!callback) {
        throw new Error('callback is not defined');
      }

      this.callback = callback;
      const self = this; // TODO: @JiaLiPassion options should have interface

      if (type === eventTask && options && options.useG) {
        this.invoke = ZoneTask.invokeTask;
      } else {
        this.invoke = function () {
          return ZoneTask.invokeTask.call(global, self, this, arguments);
        };
      }
    }

    static invokeTask(task, target, args) {
      if (!task) {
        task = this;
      }

      _numberOfNestedTaskFrames++;

      try {
        task.runCount++;
        return task.zone.runTask(task, target, args);
      } finally {
        if (_numberOfNestedTaskFrames == 1) {
          drainMicroTaskQueue();
        }

        _numberOfNestedTaskFrames--;
      }
    }

    get zone() {
      return this._zone;
    }

    get state() {
      return this._state;
    }

    cancelScheduleRequest() {
      this._transitionTo(notScheduled, scheduling);
    } // tslint:disable-next-line:require-internal-with-underscore


    _transitionTo(toState, fromState1, fromState2) {
      if (this._state === fromState1 || this._state === fromState2) {
        this._state = toState;

        if (toState == notScheduled) {
          this._zoneDelegates = null;
        }
      } else {
        throw new Error(`${this.type} '${this.source}': can not transition to '${toState}', expecting state '${fromState1}'${fromState2 ? ' or \'' + fromState2 + '\'' : ''}, was '${this._state}'.`);
      }
    }

    toString() {
      if (this.data && typeof this.data.handleId !== 'undefined') {
        return this.data.handleId.toString();
      } else {
        return Object.prototype.toString.call(this);
      }
    } // add toJSON method to prevent cyclic error when
    // call JSON.stringify(zoneTask)


    toJSON() {
      return {
        type: this.type,
        state: this.state,
        source: this.source,
        zone: this.zone.name,
        runCount: this.runCount
      };
    }

  } //////////////////////////////////////////////////////
  //////////////////////////////////////////////////////
  ///  MICROTASK QUEUE
  //////////////////////////////////////////////////////
  //////////////////////////////////////////////////////


  const symbolSetTimeout = __symbol__('setTimeout');

  const symbolPromise = __symbol__('Promise');

  const symbolThen = __symbol__('then');

  let _microTaskQueue = [];
  let _isDrainingMicrotaskQueue = false;
  let nativeMicroTaskQueuePromise;

  function scheduleMicroTask(task) {
    // if we are not running in any task, and there has not been anything scheduled
    // we must bootstrap the initial task creation by manually scheduling the drain
    if (_numberOfNestedTaskFrames === 0 && _microTaskQueue.length === 0) {
      // We are not running in Task, so we need to kickstart the microtask queue.
      if (!nativeMicroTaskQueuePromise) {
        if (global[symbolPromise]) {
          nativeMicroTaskQueuePromise = global[symbolPromise].resolve(0);
        }
      }

      if (nativeMicroTaskQueuePromise) {
        let nativeThen = nativeMicroTaskQueuePromise[symbolThen];

        if (!nativeThen) {
          // native Promise is not patchable, we need to use `then` directly
          // issue 1078
          nativeThen = nativeMicroTaskQueuePromise['then'];
        }

        nativeThen.call(nativeMicroTaskQueuePromise, drainMicroTaskQueue);
      } else {
        global[symbolSetTimeout](drainMicroTaskQueue, 0);
      }
    }

    task && _microTaskQueue.push(task);
  }

  function drainMicroTaskQueue() {
    if (!_isDrainingMicrotaskQueue) {
      _isDrainingMicrotaskQueue = true;

      while (_microTaskQueue.length) {
        const queue = _microTaskQueue;
        _microTaskQueue = [];

        for (let i = 0; i < queue.length; i++) {
          const task = queue[i];

          try {
            task.zone.runTask(task, null, null);
          } catch (error) {
            _api.onUnhandledError(error);
          }
        }
      }

      _api.microtaskDrainDone();

      _isDrainingMicrotaskQueue = false;
    }
  } //////////////////////////////////////////////////////
  //////////////////////////////////////////////////////
  ///  BOOTSTRAP
  //////////////////////////////////////////////////////
  //////////////////////////////////////////////////////


  const NO_ZONE = {
    name: 'NO ZONE'
  };
  const notScheduled = 'notScheduled',
        scheduling = 'scheduling',
        scheduled = 'scheduled',
        running = 'running',
        canceling = 'canceling',
        unknown = 'unknown';
  const microTask = 'microTask',
        macroTask = 'macroTask',
        eventTask = 'eventTask';
  const patches = {};
  const _api = {
    symbol: __symbol__,
    currentZoneFrame: () => _currentZoneFrame,
    onUnhandledError: noop,
    microtaskDrainDone: noop,
    scheduleMicroTask: scheduleMicroTask,
    showUncaughtError: () => !Zone[__symbol__('ignoreConsoleErrorUncaughtError')],
    patchEventTarget: () => [],
    patchOnProperties: noop,
    patchMethod: () => noop,
    bindArguments: () => [],
    patchThen: () => noop,
    patchMacroTask: () => noop,
    patchEventPrototype: () => noop,
    isIEOrEdge: () => false,
    getGlobalObjects: () => undefined,
    ObjectDefineProperty: () => noop,
    ObjectGetOwnPropertyDescriptor: () => undefined,
    ObjectCreate: () => undefined,
    ArraySlice: () => [],
    patchClass: () => noop,
    wrapWithCurrentZone: () => noop,
    filterProperties: () => [],
    attachOriginToPatched: () => noop,
    _redefineProperty: () => noop,
    patchCallbacks: () => noop
  };
  let _currentZoneFrame = {
    parent: null,
    zone: new Zone(null, null)
  };
  let _currentTask = null;
  let _numberOfNestedTaskFrames = 0;

  function noop() {}

  performanceMeasure('Zone', 'Zone');
  return global['Zone'] = Zone;
}(typeof window !== 'undefined' && window || typeof self !== 'undefined' && self || global);
/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

/**
 * Suppress closure compiler errors about unknown 'Zone' variable
 * @fileoverview
 * @suppress {undefinedVars,globalThis,missingRequire}
 */
/// <reference types="node"/>
// issue #989, to reduce bundle size, use short name

/** Object.getOwnPropertyDescriptor */


const ObjectGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
/** Object.defineProperty */

const ObjectDefineProperty = Object.defineProperty;
/** Object.getPrototypeOf */

const ObjectGetPrototypeOf = Object.getPrototypeOf;
/** Object.create */

const ObjectCreate = Object.create;
/** Array.prototype.slice */

const ArraySlice = Array.prototype.slice;
/** addEventListener string const */

const ADD_EVENT_LISTENER_STR = 'addEventListener';
/** removeEventListener string const */

const REMOVE_EVENT_LISTENER_STR = 'removeEventListener';
/** zoneSymbol addEventListener */

const ZONE_SYMBOL_ADD_EVENT_LISTENER = Zone.__symbol__(ADD_EVENT_LISTENER_STR);
/** zoneSymbol removeEventListener */


const ZONE_SYMBOL_REMOVE_EVENT_LISTENER = Zone.__symbol__(REMOVE_EVENT_LISTENER_STR);
/** true string const */


const TRUE_STR = 'true';
/** false string const */

const FALSE_STR = 'false';
/** Zone symbol prefix string const. */

const ZONE_SYMBOL_PREFIX = Zone.__symbol__('');

function wrapWithCurrentZone(callback, source) {
  return Zone.current.wrap(callback, source);
}

function scheduleMacroTaskWithCurrentZone(source, callback, data, customSchedule, customCancel) {
  return Zone.current.scheduleMacroTask(source, callback, data, customSchedule, customCancel);
}

const zoneSymbol = Zone.__symbol__;
const isWindowExists = typeof window !== 'undefined';
const internalWindow = isWindowExists ? window : undefined;

const _global = isWindowExists && internalWindow || typeof self === 'object' && self || global;

const REMOVE_ATTRIBUTE = 'removeAttribute';
const NULL_ON_PROP_VALUE = [null];

function bindArguments(args, source) {
  for (let i = args.length - 1; i >= 0; i--) {
    if (typeof args[i] === 'function') {
      args[i] = wrapWithCurrentZone(args[i], source + '_' + i);
    }
  }

  return args;
}

function patchPrototype(prototype, fnNames) {
  const source = prototype.constructor['name'];

  for (let i = 0; i < fnNames.length; i++) {
    const name = fnNames[i];
    const delegate = prototype[name];

    if (delegate) {
      const prototypeDesc = ObjectGetOwnPropertyDescriptor(prototype, name);

      if (!isPropertyWritable(prototypeDesc)) {
        continue;
      }

      prototype[name] = (delegate => {
        const patched = function () {
          return delegate.apply(this, bindArguments(arguments, source + '.' + name));
        };

        attachOriginToPatched(patched, delegate);
        return patched;
      })(delegate);
    }
  }
}

function isPropertyWritable(propertyDesc) {
  if (!propertyDesc) {
    return true;
  }

  if (propertyDesc.writable === false) {
    return false;
  }

  return !(typeof propertyDesc.get === 'function' && typeof propertyDesc.set === 'undefined');
}

const isWebWorker = typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope; // Make sure to access `process` through `_global` so that WebPack does not accidentally browserify
// this code.

const isNode = !('nw' in _global) && typeof _global.process !== 'undefined' && {}.toString.call(_global.process) === '[object process]';
const isBrowser = !isNode && !isWebWorker && !!(isWindowExists && internalWindow['HTMLElement']); // we are in electron of nw, so we are both browser and nodejs
// Make sure to access `process` through `_global` so that WebPack does not accidentally browserify
// this code.

const isMix = typeof _global.process !== 'undefined' && {}.toString.call(_global.process) === '[object process]' && !isWebWorker && !!(isWindowExists && internalWindow['HTMLElement']);
const zoneSymbolEventNames = {};

const wrapFn = function (event) {
  // https://github.com/angular/zone.js/issues/911, in IE, sometimes
  // event will be undefined, so we need to use window.event
  event = event || _global.event;

  if (!event) {
    return;
  }

  let eventNameSymbol = zoneSymbolEventNames[event.type];

  if (!eventNameSymbol) {
    eventNameSymbol = zoneSymbolEventNames[event.type] = zoneSymbol('ON_PROPERTY' + event.type);
  }

  const target = this || event.target || _global;
  const listener = target[eventNameSymbol];
  let result;

  if (isBrowser && target === internalWindow && event.type === 'error') {
    // window.onerror have different signiture
    // https://developer.mozilla.org/en-US/docs/Web/API/GlobalEventHandlers/onerror#window.onerror
    // and onerror callback will prevent default when callback return true
    const errorEvent = event;
    result = listener && listener.call(this, errorEvent.message, errorEvent.filename, errorEvent.lineno, errorEvent.colno, errorEvent.error);

    if (result === true) {
      event.preventDefault();
    }
  } else {
    result = listener && listener.apply(this, arguments);

    if (result != undefined && !result) {
      event.preventDefault();
    }
  }

  return result;
};

function patchProperty(obj, prop, prototype) {
  let desc = ObjectGetOwnPropertyDescriptor(obj, prop);

  if (!desc && prototype) {
    // when patch window object, use prototype to check prop exist or not
    const prototypeDesc = ObjectGetOwnPropertyDescriptor(prototype, prop);

    if (prototypeDesc) {
      desc = {
        enumerable: true,
        configurable: true
      };
    }
  } // if the descriptor not exists or is not configurable
  // just return


  if (!desc || !desc.configurable) {
    return;
  }

  const onPropPatchedSymbol = zoneSymbol('on' + prop + 'patched');

  if (obj.hasOwnProperty(onPropPatchedSymbol) && obj[onPropPatchedSymbol]) {
    return;
  } // A property descriptor cannot have getter/setter and be writable
  // deleting the writable and value properties avoids this error:
  //
  // TypeError: property descriptors must not specify a value or be writable when a
  // getter or setter has been specified


  delete desc.writable;
  delete desc.value;
  const originalDescGet = desc.get;
  const originalDescSet = desc.set; // substr(2) cuz 'onclick' -> 'click', etc

  const eventName = prop.substr(2);
  let eventNameSymbol = zoneSymbolEventNames[eventName];

  if (!eventNameSymbol) {
    eventNameSymbol = zoneSymbolEventNames[eventName] = zoneSymbol('ON_PROPERTY' + eventName);
  }

  desc.set = function (newValue) {
    // in some of windows's onproperty callback, this is undefined
    // so we need to check it
    let target = this;

    if (!target && obj === _global) {
      target = _global;
    }

    if (!target) {
      return;
    }

    let previousValue = target[eventNameSymbol];

    if (previousValue) {
      target.removeEventListener(eventName, wrapFn);
    } // issue #978, when onload handler was added before loading zone.js
    // we should remove it with originalDescSet


    if (originalDescSet) {
      originalDescSet.apply(target, NULL_ON_PROP_VALUE);
    }

    if (typeof newValue === 'function') {
      target[eventNameSymbol] = newValue;
      target.addEventListener(eventName, wrapFn, false);
    } else {
      target[eventNameSymbol] = null;
    }
  }; // The getter would return undefined for unassigned properties but the default value of an
  // unassigned property is null


  desc.get = function () {
    // in some of windows's onproperty callback, this is undefined
    // so we need to check it
    let target = this;

    if (!target && obj === _global) {
      target = _global;
    }

    if (!target) {
      return null;
    }

    const listener = target[eventNameSymbol];

    if (listener) {
      return listener;
    } else if (originalDescGet) {
      // result will be null when use inline event attribute,
      // such as <button onclick="func();">OK</button>
      // because the onclick function is internal raw uncompiled handler
      // the onclick will be evaluated when first time event was triggered or
      // the property is accessed, https://github.com/angular/zone.js/issues/525
      // so we should use original native get to retrieve the handler
      let value = originalDescGet && originalDescGet.call(this);

      if (value) {
        desc.set.call(this, value);

        if (typeof target[REMOVE_ATTRIBUTE] === 'function') {
          target.removeAttribute(prop);
        }

        return value;
      }
    }

    return null;
  };

  ObjectDefineProperty(obj, prop, desc);
  obj[onPropPatchedSymbol] = true;
}

function patchOnProperties(obj, properties, prototype) {
  if (properties) {
    for (let i = 0; i < properties.length; i++) {
      patchProperty(obj, 'on' + properties[i], prototype);
    }
  } else {
    const onProperties = [];

    for (const prop in obj) {
      if (prop.substr(0, 2) == 'on') {
        onProperties.push(prop);
      }
    }

    for (let j = 0; j < onProperties.length; j++) {
      patchProperty(obj, onProperties[j], prototype);
    }
  }
}

const originalInstanceKey = zoneSymbol('originalInstance'); // wrap some native API on `window`

function patchClass(className) {
  const OriginalClass = _global[className];
  if (!OriginalClass) return; // keep original class in global

  _global[zoneSymbol(className)] = OriginalClass;

  _global[className] = function () {
    const a = bindArguments(arguments, className);

    switch (a.length) {
      case 0:
        this[originalInstanceKey] = new OriginalClass();
        break;

      case 1:
        this[originalInstanceKey] = new OriginalClass(a[0]);
        break;

      case 2:
        this[originalInstanceKey] = new OriginalClass(a[0], a[1]);
        break;

      case 3:
        this[originalInstanceKey] = new OriginalClass(a[0], a[1], a[2]);
        break;

      case 4:
        this[originalInstanceKey] = new OriginalClass(a[0], a[1], a[2], a[3]);
        break;

      default:
        throw new Error('Arg list too long.');
    }
  }; // attach original delegate to patched function


  attachOriginToPatched(_global[className], OriginalClass);
  const instance = new OriginalClass(function () {});
  let prop;

  for (prop in instance) {
    // https://bugs.webkit.org/show_bug.cgi?id=44721
    if (className === 'XMLHttpRequest' && prop === 'responseBlob') continue;

    (function (prop) {
      if (typeof instance[prop] === 'function') {
        _global[className].prototype[prop] = function () {
          return this[originalInstanceKey][prop].apply(this[originalInstanceKey], arguments);
        };
      } else {
        ObjectDefineProperty(_global[className].prototype, prop, {
          set: function (fn) {
            if (typeof fn === 'function') {
              this[originalInstanceKey][prop] = wrapWithCurrentZone(fn, className + '.' + prop); // keep callback in wrapped function so we can
              // use it in Function.prototype.toString to return
              // the native one.

              attachOriginToPatched(this[originalInstanceKey][prop], fn);
            } else {
              this[originalInstanceKey][prop] = fn;
            }
          },
          get: function () {
            return this[originalInstanceKey][prop];
          }
        });
      }
    })(prop);
  }

  for (prop in OriginalClass) {
    if (prop !== 'prototype' && OriginalClass.hasOwnProperty(prop)) {
      _global[className][prop] = OriginalClass[prop];
    }
  }
}

function patchMethod(target, name, patchFn) {
  let proto = target;

  while (proto && !proto.hasOwnProperty(name)) {
    proto = ObjectGetPrototypeOf(proto);
  }

  if (!proto && target[name]) {
    // somehow we did not find it, but we can see it. This happens on IE for Window properties.
    proto = target;
  }

  const delegateName = zoneSymbol(name);
  let delegate = null;

  if (proto && (!(delegate = proto[delegateName]) || !proto.hasOwnProperty(delegateName))) {
    delegate = proto[delegateName] = proto[name]; // check whether proto[name] is writable
    // some property is readonly in safari, such as HtmlCanvasElement.prototype.toBlob

    const desc = proto && ObjectGetOwnPropertyDescriptor(proto, name);

    if (isPropertyWritable(desc)) {
      const patchDelegate = patchFn(delegate, delegateName, name);

      proto[name] = function () {
        return patchDelegate(this, arguments);
      };

      attachOriginToPatched(proto[name], delegate);
    }
  }

  return delegate;
} // TODO: @JiaLiPassion, support cancel task later if necessary


function patchMacroTask(obj, funcName, metaCreator) {
  let setNative = null;

  function scheduleTask(task) {
    const data = task.data;

    data.args[data.cbIdx] = function () {
      task.invoke.apply(this, arguments);
    };

    setNative.apply(data.target, data.args);
    return task;
  }

  setNative = patchMethod(obj, funcName, delegate => function (self, args) {
    const meta = metaCreator(self, args);

    if (meta.cbIdx >= 0 && typeof args[meta.cbIdx] === 'function') {
      return scheduleMacroTaskWithCurrentZone(meta.name, args[meta.cbIdx], meta, scheduleTask);
    } else {
      // cause an error by calling it directly.
      return delegate.apply(self, args);
    }
  });
}

function attachOriginToPatched(patched, original) {
  patched[zoneSymbol('OriginalDelegate')] = original;
}

let isDetectedIEOrEdge = false;
let ieOrEdge = false;

function isIE() {
  try {
    const ua = internalWindow.navigator.userAgent;

    if (ua.indexOf('MSIE ') !== -1 || ua.indexOf('Trident/') !== -1) {
      return true;
    }
  } catch (error) {}

  return false;
}

function isIEOrEdge() {
  if (isDetectedIEOrEdge) {
    return ieOrEdge;
  }

  isDetectedIEOrEdge = true;

  try {
    const ua = internalWindow.navigator.userAgent;

    if (ua.indexOf('MSIE ') !== -1 || ua.indexOf('Trident/') !== -1 || ua.indexOf('Edge/') !== -1) {
      ieOrEdge = true;
    }
  } catch (error) {}

  return ieOrEdge;
}
/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */


Zone.__load_patch('ZoneAwarePromise', (global, Zone, api) => {
  const ObjectGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
  const ObjectDefineProperty = Object.defineProperty;

  function readableObjectToString(obj) {
    if (obj && obj.toString === Object.prototype.toString) {
      const className = obj.constructor && obj.constructor.name;
      return (className ? className : '') + ': ' + JSON.stringify(obj);
    }

    return obj ? obj.toString() : Object.prototype.toString.call(obj);
  }

  const __symbol__ = api.symbol;
  const _uncaughtPromiseErrors = [];
  const isDisableWrappingUncaughtPromiseRejection = global[__symbol__('DISABLE_WRAPPING_UNCAUGHT_PROMISE_REJECTION')] === true;

  const symbolPromise = __symbol__('Promise');

  const symbolThen = __symbol__('then');

  const creationTrace = '__creationTrace__';

  api.onUnhandledError = e => {
    if (api.showUncaughtError()) {
      const rejection = e && e.rejection;

      if (rejection) {
        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);
      } else {
        console.error(e);
      }
    }
  };

  api.microtaskDrainDone = () => {
    while (_uncaughtPromiseErrors.length) {
      const uncaughtPromiseError = _uncaughtPromiseErrors.shift();

      try {
        uncaughtPromiseError.zone.runGuarded(() => {
          if (uncaughtPromiseError.throwOriginal) {
            throw uncaughtPromiseError.rejection;
          }

          throw uncaughtPromiseError;
        });
      } catch (error) {
        handleUnhandledRejection(error);
      }
    }
  };

  const UNHANDLED_PROMISE_REJECTION_HANDLER_SYMBOL = __symbol__('unhandledPromiseRejectionHandler');

  function handleUnhandledRejection(e) {
    api.onUnhandledError(e);

    try {
      const handler = Zone[UNHANDLED_PROMISE_REJECTION_HANDLER_SYMBOL];

      if (typeof handler === 'function') {
        handler.call(this, e);
      }
    } catch (err) {}
  }

  function isThenable(value) {
    return value && value.then;
  }

  function forwardResolution(value) {
    return value;
  }

  function forwardRejection(rejection) {
    return ZoneAwarePromise.reject(rejection);
  }

  const symbolState = __symbol__('state');

  const symbolValue = __symbol__('value');

  const symbolFinally = __symbol__('finally');

  const symbolParentPromiseValue = __symbol__('parentPromiseValue');

  const symbolParentPromiseState = __symbol__('parentPromiseState');

  const source = 'Promise.then';
  const UNRESOLVED = null;
  const RESOLVED = true;
  const REJECTED = false;
  const REJECTED_NO_CATCH = 0;

  function makeResolver(promise, state) {
    return v => {
      try {
        resolvePromise(promise, state, v);
      } catch (err) {
        resolvePromise(promise, false, err);
      } // Do not return value or you will break the Promise spec.

    };
  }

  const once = function () {
    let wasCalled = false;
    return function wrapper(wrappedFunction) {
      return function () {
        if (wasCalled) {
          return;
        }

        wasCalled = true;
        wrappedFunction.apply(null, arguments);
      };
    };
  };

  const TYPE_ERROR = 'Promise resolved with itself';

  const CURRENT_TASK_TRACE_SYMBOL = __symbol__('currentTaskTrace'); // Promise Resolution


  function resolvePromise(promise, state, value) {
    const onceWrapper = once();

    if (promise === value) {
      throw new TypeError(TYPE_ERROR);
    }

    if (promise[symbolState] === UNRESOLVED) {
      // should only get value.then once based on promise spec.
      let then = null;

      try {
        if (typeof value === 'object' || typeof value === 'function') {
          then = value && value.then;
        }
      } catch (err) {
        onceWrapper(() => {
          resolvePromise(promise, false, err);
        })();
        return promise;
      } // if (value instanceof ZoneAwarePromise) {


      if (state !== REJECTED && value instanceof ZoneAwarePromise && value.hasOwnProperty(symbolState) && value.hasOwnProperty(symbolValue) && value[symbolState] !== UNRESOLVED) {
        clearRejectedNoCatch(value);
        resolvePromise(promise, value[symbolState], value[symbolValue]);
      } else if (state !== REJECTED && typeof then === 'function') {
        try {
          then.call(value, onceWrapper(makeResolver(promise, state)), onceWrapper(makeResolver(promise, false)));
        } catch (err) {
          onceWrapper(() => {
            resolvePromise(promise, false, err);
          })();
        }
      } else {
        promise[symbolState] = state;
        const queue = promise[symbolValue];
        promise[symbolValue] = value;

        if (promise[symbolFinally] === symbolFinally) {
          // the promise is generated by Promise.prototype.finally
          if (state === RESOLVED) {
            // the state is resolved, should ignore the value
            // and use parent promise value
            promise[symbolState] = promise[symbolParentPromiseState];
            promise[symbolValue] = promise[symbolParentPromiseValue];
          }
        } // record task information in value when error occurs, so we can
        // do some additional work such as render longStackTrace


        if (state === REJECTED && value instanceof Error) {
          // check if longStackTraceZone is here
          const trace = Zone.currentTask && Zone.currentTask.data && Zone.currentTask.data[creationTrace];

          if (trace) {
            // only keep the long stack trace into error when in longStackTraceZone
            ObjectDefineProperty(value, CURRENT_TASK_TRACE_SYMBOL, {
              configurable: true,
              enumerable: false,
              writable: true,
              value: trace
            });
          }
        }

        for (let i = 0; i < queue.length;) {
          scheduleResolveOrReject(promise, queue[i++], queue[i++], queue[i++], queue[i++]);
        }

        if (queue.length == 0 && state == REJECTED) {
          promise[symbolState] = REJECTED_NO_CATCH;
          let uncaughtPromiseError = value;

          try {
            // Here we throws a new Error to print more readable error log
            // and if the value is not an error, zone.js builds an `Error`
            // Object here to attach the stack information.
            throw new Error('Uncaught (in promise): ' + readableObjectToString(value) + (value && value.stack ? '\n' + value.stack : ''));
          } catch (err) {
            uncaughtPromiseError = err;
          }

          if (isDisableWrappingUncaughtPromiseRejection) {
            // If disable wrapping uncaught promise reject
            // use the value instead of wrapping it.
            uncaughtPromiseError.throwOriginal = true;
          }

          uncaughtPromiseError.rejection = value;
          uncaughtPromiseError.promise = promise;
          uncaughtPromiseError.zone = Zone.current;
          uncaughtPromiseError.task = Zone.currentTask;

          _uncaughtPromiseErrors.push(uncaughtPromiseError);

          api.scheduleMicroTask(); // to make sure that it is running
        }
      }
    } // Resolving an already resolved promise is a noop.


    return promise;
  }

  const REJECTION_HANDLED_HANDLER = __symbol__('rejectionHandledHandler');

  function clearRejectedNoCatch(promise) {
    if (promise[symbolState] === REJECTED_NO_CATCH) {
      // if the promise is rejected no catch status
      // and queue.length > 0, means there is a error handler
      // here to handle the rejected promise, we should trigger
      // windows.rejectionhandled eventHandler or nodejs rejectionHandled
      // eventHandler
      try {
        const handler = Zone[REJECTION_HANDLED_HANDLER];

        if (handler && typeof handler === 'function') {
          handler.call(this, {
            rejection: promise[symbolValue],
            promise: promise
          });
        }
      } catch (err) {}

      promise[symbolState] = REJECTED;

      for (let i = 0; i < _uncaughtPromiseErrors.length; i++) {
        if (promise === _uncaughtPromiseErrors[i].promise) {
          _uncaughtPromiseErrors.splice(i, 1);
        }
      }
    }
  }

  function scheduleResolveOrReject(promise, zone, chainPromise, onFulfilled, onRejected) {
    clearRejectedNoCatch(promise);
    const promiseState = promise[symbolState];
    const delegate = promiseState ? typeof onFulfilled === 'function' ? onFulfilled : forwardResolution : typeof onRejected === 'function' ? onRejected : forwardRejection;
    zone.scheduleMicroTask(source, () => {
      try {
        const parentPromiseValue = promise[symbolValue];
        const isFinallyPromise = !!chainPromise && symbolFinally === chainPromise[symbolFinally];

        if (isFinallyPromise) {
          // if the promise is generated from finally call, keep parent promise's state and value
          chainPromise[symbolParentPromiseValue] = parentPromiseValue;
          chainPromise[symbolParentPromiseState] = promiseState;
        } // should not pass value to finally callback


        const value = zone.run(delegate, undefined, isFinallyPromise && delegate !== forwardRejection && delegate !== forwardResolution ? [] : [parentPromiseValue]);
        resolvePromise(chainPromise, true, value);
      } catch (error) {
        // if error occurs, should always return this error
        resolvePromise(chainPromise, false, error);
      }
    }, chainPromise);
  }

  const ZONE_AWARE_PROMISE_TO_STRING = 'function ZoneAwarePromise() { [native code] }';

  const noop = function () {};

  class ZoneAwarePromise {
    static toString() {
      return ZONE_AWARE_PROMISE_TO_STRING;
    }

    static resolve(value) {
      return resolvePromise(new this(null), RESOLVED, value);
    }

    static reject(error) {
      return resolvePromise(new this(null), REJECTED, error);
    }

    static race(values) {
      let resolve;
      let reject;
      let promise = new this((res, rej) => {
        resolve = res;
        reject = rej;
      });

      function onResolve(value) {
        resolve(value);
      }

      function onReject(error) {
        reject(error);
      }

      for (let value of values) {
        if (!isThenable(value)) {
          value = this.resolve(value);
        }

        value.then(onResolve, onReject);
      }

      return promise;
    }

    static all(values) {
      return ZoneAwarePromise.allWithCallback(values);
    }

    static allSettled(values) {
      const P = this && this.prototype instanceof ZoneAwarePromise ? this : ZoneAwarePromise;
      return P.allWithCallback(values, {
        thenCallback: value => ({
          status: 'fulfilled',
          value
        }),
        errorCallback: err => ({
          status: 'rejected',
          reason: err
        })
      });
    }

    static allWithCallback(values, callback) {
      let resolve;
      let reject;
      let promise = new this((res, rej) => {
        resolve = res;
        reject = rej;
      }); // Start at 2 to prevent prematurely resolving if .then is called immediately.

      let unresolvedCount = 2;
      let valueIndex = 0;
      const resolvedValues = [];

      for (let value of values) {
        if (!isThenable(value)) {
          value = this.resolve(value);
        }

        const curValueIndex = valueIndex;

        try {
          value.then(value => {
            resolvedValues[curValueIndex] = callback ? callback.thenCallback(value) : value;
            unresolvedCount--;

            if (unresolvedCount === 0) {
              resolve(resolvedValues);
            }
          }, err => {
            if (!callback) {
              reject(err);
            } else {
              resolvedValues[curValueIndex] = callback.errorCallback(err);
              unresolvedCount--;

              if (unresolvedCount === 0) {
                resolve(resolvedValues);
              }
            }
          });
        } catch (thenErr) {
          reject(thenErr);
        }

        unresolvedCount++;
        valueIndex++;
      } // Make the unresolvedCount zero-based again.


      unresolvedCount -= 2;

      if (unresolvedCount === 0) {
        resolve(resolvedValues);
      }

      return promise;
    }

    constructor(executor) {
      const promise = this;

      if (!(promise instanceof ZoneAwarePromise)) {
        throw new Error('Must be an instanceof Promise.');
      }

      promise[symbolState] = UNRESOLVED;
      promise[symbolValue] = []; // queue;

      try {
        executor && executor(makeResolver(promise, RESOLVED), makeResolver(promise, REJECTED));
      } catch (error) {
        resolvePromise(promise, false, error);
      }
    }

    get [Symbol.toStringTag]() {
      return 'Promise';
    }

    get [Symbol.species]() {
      return ZoneAwarePromise;
    }

    then(onFulfilled, onRejected) {
      let C = this.constructor[Symbol.species];

      if (!C || typeof C !== 'function') {
        C = this.constructor || ZoneAwarePromise;
      }

      const chainPromise = new C(noop);
      const zone = Zone.current;

      if (this[symbolState] == UNRESOLVED) {
        this[symbolValue].push(zone, chainPromise, onFulfilled, onRejected);
      } else {
        scheduleResolveOrReject(this, zone, chainPromise, onFulfilled, onRejected);
      }

      return chainPromise;
    }

    catch(onRejected) {
      return this.then(null, onRejected);
    }

    finally(onFinally) {
      let C = this.constructor[Symbol.species];

      if (!C || typeof C !== 'function') {
        C = ZoneAwarePromise;
      }

      const chainPromise = new C(noop);
      chainPromise[symbolFinally] = symbolFinally;
      const zone = Zone.current;

      if (this[symbolState] == UNRESOLVED) {
        this[symbolValue].push(zone, chainPromise, onFinally, onFinally);
      } else {
        scheduleResolveOrReject(this, zone, chainPromise, onFinally, onFinally);
      }

      return chainPromise;
    }

  } // Protect against aggressive optimizers dropping seemingly unused properties.
  // E.g. Closure Compiler in advanced mode.


  ZoneAwarePromise['resolve'] = ZoneAwarePromise.resolve;
  ZoneAwarePromise['reject'] = ZoneAwarePromise.reject;
  ZoneAwarePromise['race'] = ZoneAwarePromise.race;
  ZoneAwarePromise['all'] = ZoneAwarePromise.all;
  const NativePromise = global[symbolPromise] = global['Promise'];
  global['Promise'] = ZoneAwarePromise;

  const symbolThenPatched = __symbol__('thenPatched');

  function patchThen(Ctor) {
    const proto = Ctor.prototype;
    const prop = ObjectGetOwnPropertyDescriptor(proto, 'then');

    if (prop && (prop.writable === false || !prop.configurable)) {
      // check Ctor.prototype.then propertyDescriptor is writable or not
      // in meteor env, writable is false, we should ignore such case
      return;
    }

    const originalThen = proto.then; // Keep a reference to the original method.

    proto[symbolThen] = originalThen;

    Ctor.prototype.then = function (onResolve, onReject) {
      const wrapped = new ZoneAwarePromise((resolve, reject) => {
        originalThen.call(this, resolve, reject);
      });
      return wrapped.then(onResolve, onReject);
    };

    Ctor[symbolThenPatched] = true;
  }

  api.patchThen = patchThen;

  function zoneify(fn) {
    return function (self, args) {
      let resultPromise = fn.apply(self, args);

      if (resultPromise instanceof ZoneAwarePromise) {
        return resultPromise;
      }

      let ctor = resultPromise.constructor;

      if (!ctor[symbolThenPatched]) {
        patchThen(ctor);
      }

      return resultPromise;
    };
  }

  if (NativePromise) {
    patchThen(NativePromise);
    patchMethod(global, 'fetch', delegate => zoneify(delegate));
  } // This is not part of public API, but it is useful for tests, so we expose it.


  Promise[Zone.__symbol__('uncaughtPromiseErrors')] = _uncaughtPromiseErrors;
  return ZoneAwarePromise;
});
/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
// override Function.prototype.toString to make zone.js patched function
// look like native function


Zone.__load_patch('toString', global => {
  // patch Func.prototype.toString to let them look like native
  const originalFunctionToString = Function.prototype.toString;
  const ORIGINAL_DELEGATE_SYMBOL = zoneSymbol('OriginalDelegate');
  const PROMISE_SYMBOL = zoneSymbol('Promise');
  const ERROR_SYMBOL = zoneSymbol('Error');

  const newFunctionToString = function toString() {
    if (typeof this === 'function') {
      const originalDelegate = this[ORIGINAL_DELEGATE_SYMBOL];

      if (originalDelegate) {
        if (typeof originalDelegate === 'function') {
          return originalFunctionToString.call(originalDelegate);
        } else {
          return Object.prototype.toString.call(originalDelegate);
        }
      }

      if (this === Promise) {
        const nativePromise = global[PROMISE_SYMBOL];

        if (nativePromise) {
          return originalFunctionToString.call(nativePromise);
        }
      }

      if (this === Error) {
        const nativeError = global[ERROR_SYMBOL];

        if (nativeError) {
          return originalFunctionToString.call(nativeError);
        }
      }
    }

    return originalFunctionToString.call(this);
  };

  newFunctionToString[ORIGINAL_DELEGATE_SYMBOL] = originalFunctionToString;
  Function.prototype.toString = newFunctionToString; // patch Object.prototype.toString to let them look like native

  const originalObjectToString = Object.prototype.toString;
  const PROMISE_OBJECT_TO_STRING = '[object Promise]';

  Object.prototype.toString = function () {
    if (typeof Promise === 'function' && this instanceof Promise) {
      return PROMISE_OBJECT_TO_STRING;
    }

    return originalObjectToString.call(this);
  };
});
/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */


let passiveSupported = false;

if (typeof window !== 'undefined') {
  try {
    const options = Object.defineProperty({}, 'passive', {
      get: function () {
        passiveSupported = true;
      }
    });
    window.addEventListener('test', options, options);
    window.removeEventListener('test', options, options);
  } catch (err) {
    passiveSupported = false;
  }
} // an identifier to tell ZoneTask do not create a new invoke closure


const OPTIMIZED_ZONE_EVENT_TASK_DATA = {
  useG: true
};
const zoneSymbolEventNames$1 = {};
const globalSources = {};
const EVENT_NAME_SYMBOL_REGX = new RegExp('^' + ZONE_SYMBOL_PREFIX + '(\\w+)(true|false)$');
const IMMEDIATE_PROPAGATION_SYMBOL = zoneSymbol('propagationStopped');

function prepareEventNames(eventName, eventNameToString) {
  const falseEventName = (eventNameToString ? eventNameToString(eventName) : eventName) + FALSE_STR;
  const trueEventName = (eventNameToString ? eventNameToString(eventName) : eventName) + TRUE_STR;
  const symbol = ZONE_SYMBOL_PREFIX + falseEventName;
  const symbolCapture = ZONE_SYMBOL_PREFIX + trueEventName;
  zoneSymbolEventNames$1[eventName] = {};
  zoneSymbolEventNames$1[eventName][FALSE_STR] = symbol;
  zoneSymbolEventNames$1[eventName][TRUE_STR] = symbolCapture;
}

function patchEventTarget(_global, apis, patchOptions) {
  const ADD_EVENT_LISTENER = patchOptions && patchOptions.add || ADD_EVENT_LISTENER_STR;
  const REMOVE_EVENT_LISTENER = patchOptions && patchOptions.rm || REMOVE_EVENT_LISTENER_STR;
  const LISTENERS_EVENT_LISTENER = patchOptions && patchOptions.listeners || 'eventListeners';
  const REMOVE_ALL_LISTENERS_EVENT_LISTENER = patchOptions && patchOptions.rmAll || 'removeAllListeners';
  const zoneSymbolAddEventListener = zoneSymbol(ADD_EVENT_LISTENER);
  const ADD_EVENT_LISTENER_SOURCE = '.' + ADD_EVENT_LISTENER + ':';
  const PREPEND_EVENT_LISTENER = 'prependListener';
  const PREPEND_EVENT_LISTENER_SOURCE = '.' + PREPEND_EVENT_LISTENER + ':';

  const invokeTask = function (task, target, event) {
    // for better performance, check isRemoved which is set
    // by removeEventListener
    if (task.isRemoved) {
      return;
    }

    const delegate = task.callback;

    if (typeof delegate === 'object' && delegate.handleEvent) {
      // create the bind version of handleEvent when invoke
      task.callback = event => delegate.handleEvent(event);

      task.originalDelegate = delegate;
    } // invoke static task.invoke


    task.invoke(task, target, [event]);
    const options = task.options;

    if (options && typeof options === 'object' && options.once) {
      // if options.once is true, after invoke once remove listener here
      // only browser need to do this, nodejs eventEmitter will cal removeListener
      // inside EventEmitter.once
      const delegate = task.originalDelegate ? task.originalDelegate : task.callback;
      target[REMOVE_EVENT_LISTENER].call(target, event.type, delegate, options);
    }
  }; // global shared zoneAwareCallback to handle all event callback with capture = false


  const globalZoneAwareCallback = function (event) {
    // https://github.com/angular/zone.js/issues/911, in IE, sometimes
    // event will be undefined, so we need to use window.event
    event = event || _global.event;

    if (!event) {
      return;
    } // event.target is needed for Samsung TV and SourceBuffer
    // || global is needed https://github.com/angular/zone.js/issues/190


    const target = this || event.target || _global;
    const tasks = target[zoneSymbolEventNames$1[event.type][FALSE_STR]];

    if (tasks) {
      // invoke all tasks which attached to current target with given event.type and capture = false
      // for performance concern, if task.length === 1, just invoke
      if (tasks.length === 1) {
        invokeTask(tasks[0], target, event);
      } else {
        // https://github.com/angular/zone.js/issues/836
        // copy the tasks array before invoke, to avoid
        // the callback will remove itself or other listener
        const copyTasks = tasks.slice();

        for (let i = 0; i < copyTasks.length; i++) {
          if (event && event[IMMEDIATE_PROPAGATION_SYMBOL] === true) {
            break;
          }

          invokeTask(copyTasks[i], target, event);
        }
      }
    }
  }; // global shared zoneAwareCallback to handle all event callback with capture = true


  const globalZoneAwareCaptureCallback = function (event) {
    // https://github.com/angular/zone.js/issues/911, in IE, sometimes
    // event will be undefined, so we need to use window.event
    event = event || _global.event;

    if (!event) {
      return;
    } // event.target is needed for Samsung TV and SourceBuffer
    // || global is needed https://github.com/angular/zone.js/issues/190


    const target = this || event.target || _global;
    const tasks = target[zoneSymbolEventNames$1[event.type][TRUE_STR]];

    if (tasks) {
      // invoke all tasks which attached to current target with given event.type and capture = false
      // for performance concern, if task.length === 1, just invoke
      if (tasks.length === 1) {
        invokeTask(tasks[0], target, event);
      } else {
        // https://github.com/angular/zone.js/issues/836
        // copy the tasks array before invoke, to avoid
        // the callback will remove itself or other listener
        const copyTasks = tasks.slice();

        for (let i = 0; i < copyTasks.length; i++) {
          if (event && event[IMMEDIATE_PROPAGATION_SYMBOL] === true) {
            break;
          }

          invokeTask(copyTasks[i], target, event);
        }
      }
    }
  };

  function patchEventTargetMethods(obj, patchOptions) {
    if (!obj) {
      return false;
    }

    let useGlobalCallback = true;

    if (patchOptions && patchOptions.useG !== undefined) {
      useGlobalCallback = patchOptions.useG;
    }

    const validateHandler = patchOptions && patchOptions.vh;
    let checkDuplicate = true;

    if (patchOptions && patchOptions.chkDup !== undefined) {
      checkDuplicate = patchOptions.chkDup;
    }

    let returnTarget = false;

    if (patchOptions && patchOptions.rt !== undefined) {
      returnTarget = patchOptions.rt;
    }

    let proto = obj;

    while (proto && !proto.hasOwnProperty(ADD_EVENT_LISTENER)) {
      proto = ObjectGetPrototypeOf(proto);
    }

    if (!proto && obj[ADD_EVENT_LISTENER]) {
      // somehow we did not find it, but we can see it. This happens on IE for Window properties.
      proto = obj;
    }

    if (!proto) {
      return false;
    }

    if (proto[zoneSymbolAddEventListener]) {
      return false;
    }

    const eventNameToString = patchOptions && patchOptions.eventNameToString; // a shared global taskData to pass data for scheduleEventTask
    // so we do not need to create a new object just for pass some data

    const taskData = {};
    const nativeAddEventListener = proto[zoneSymbolAddEventListener] = proto[ADD_EVENT_LISTENER];
    const nativeRemoveEventListener = proto[zoneSymbol(REMOVE_EVENT_LISTENER)] = proto[REMOVE_EVENT_LISTENER];
    const nativeListeners = proto[zoneSymbol(LISTENERS_EVENT_LISTENER)] = proto[LISTENERS_EVENT_LISTENER];
    const nativeRemoveAllListeners = proto[zoneSymbol(REMOVE_ALL_LISTENERS_EVENT_LISTENER)] = proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER];
    let nativePrependEventListener;

    if (patchOptions && patchOptions.prepend) {
      nativePrependEventListener = proto[zoneSymbol(patchOptions.prepend)] = proto[patchOptions.prepend];
    }
    /**
     * This util function will build an option object with passive option
     * to handle all possible input from the user.
     */


    function buildEventListenerOptions(options, passive) {
      if (!passiveSupported && typeof options === 'object' && options) {
        // doesn't support passive but user want to pass an object as options.
        // this will not work on some old browser, so we just pass a boolean
        // as useCapture parameter
        return !!options.capture;
      }

      if (!passiveSupported || !passive) {
        return options;
      }

      if (typeof options === 'boolean') {
        return {
          capture: options,
          passive: true
        };
      }

      if (!options) {
        return {
          passive: true
        };
      }

      if (typeof options === 'object' && options.passive !== false) {
        return Object.assign(Object.assign({}, options), {
          passive: true
        });
      }

      return options;
    }

    const customScheduleGlobal = function (task) {
      // if there is already a task for the eventName + capture,
      // just return, because we use the shared globalZoneAwareCallback here.
      if (taskData.isExisting) {
        return;
      }

      return nativeAddEventListener.call(taskData.target, taskData.eventName, taskData.capture ? globalZoneAwareCaptureCallback : globalZoneAwareCallback, taskData.options);
    };

    const customCancelGlobal = function (task) {
      // if task is not marked as isRemoved, this call is directly
      // from Zone.prototype.cancelTask, we should remove the task
      // from tasksList of target first
      if (!task.isRemoved) {
        const symbolEventNames = zoneSymbolEventNames$1[task.eventName];
        let symbolEventName;

        if (symbolEventNames) {
          symbolEventName = symbolEventNames[task.capture ? TRUE_STR : FALSE_STR];
        }

        const existingTasks = symbolEventName && task.target[symbolEventName];

        if (existingTasks) {
          for (let i = 0; i < existingTasks.length; i++) {
            const existingTask = existingTasks[i];

            if (existingTask === task) {
              existingTasks.splice(i, 1); // set isRemoved to data for faster invokeTask check

              task.isRemoved = true;

              if (existingTasks.length === 0) {
                // all tasks for the eventName + capture have gone,
                // remove globalZoneAwareCallback and remove the task cache from target
                task.allRemoved = true;
                task.target[symbolEventName] = null;
              }

              break;
            }
          }
        }
      } // if all tasks for the eventName + capture have gone,
      // we will really remove the global event callback,
      // if not, return


      if (!task.allRemoved) {
        return;
      }

      return nativeRemoveEventListener.call(task.target, task.eventName, task.capture ? globalZoneAwareCaptureCallback : globalZoneAwareCallback, task.options);
    };

    const customScheduleNonGlobal = function (task) {
      return nativeAddEventListener.call(taskData.target, taskData.eventName, task.invoke, taskData.options);
    };

    const customSchedulePrepend = function (task) {
      return nativePrependEventListener.call(taskData.target, taskData.eventName, task.invoke, taskData.options);
    };

    const customCancelNonGlobal = function (task) {
      return nativeRemoveEventListener.call(task.target, task.eventName, task.invoke, task.options);
    };

    const customSchedule = useGlobalCallback ? customScheduleGlobal : customScheduleNonGlobal;
    const customCancel = useGlobalCallback ? customCancelGlobal : customCancelNonGlobal;

    const compareTaskCallbackVsDelegate = function (task, delegate) {
      const typeOfDelegate = typeof delegate;
      return typeOfDelegate === 'function' && task.callback === delegate || typeOfDelegate === 'object' && task.originalDelegate === delegate;
    };

    const compare = patchOptions && patchOptions.diff ? patchOptions.diff : compareTaskCallbackVsDelegate;
    const unpatchedEvents = Zone[zoneSymbol('UNPATCHED_EVENTS')];

    const passiveEvents = _global[zoneSymbol('PASSIVE_EVENTS')];

    const makeAddListener = function (nativeListener, addSource, customScheduleFn, customCancelFn, returnTarget = false, prepend = false) {
      return function () {
        const target = this || _global;
        let eventName = arguments[0];

        if (patchOptions && patchOptions.transferEventName) {
          eventName = patchOptions.transferEventName(eventName);
        }

        let delegate = arguments[1];

        if (!delegate) {
          return nativeListener.apply(this, arguments);
        }

        if (isNode && eventName === 'uncaughtException') {
          // don't patch uncaughtException of nodejs to prevent endless loop
          return nativeListener.apply(this, arguments);
        } // don't create the bind delegate function for handleEvent
        // case here to improve addEventListener performance
        // we will create the bind delegate when invoke


        let isHandleEvent = false;

        if (typeof delegate !== 'function') {
          if (!delegate.handleEvent) {
            return nativeListener.apply(this, arguments);
          }

          isHandleEvent = true;
        }

        if (validateHandler && !validateHandler(nativeListener, delegate, target, arguments)) {
          return;
        }

        const passive = passiveSupported && !!passiveEvents && passiveEvents.indexOf(eventName) !== -1;
        const options = buildEventListenerOptions(arguments[2], passive);

        if (unpatchedEvents) {
          // check upatched list
          for (let i = 0; i < unpatchedEvents.length; i++) {
            if (eventName === unpatchedEvents[i]) {
              if (passive) {
                return nativeListener.call(target, eventName, delegate, options);
              } else {
                return nativeListener.apply(this, arguments);
              }
            }
          }
        }

        const capture = !options ? false : typeof options === 'boolean' ? true : options.capture;
        const once = options && typeof options === 'object' ? options.once : false;
        const zone = Zone.current;
        let symbolEventNames = zoneSymbolEventNames$1[eventName];

        if (!symbolEventNames) {
          prepareEventNames(eventName, eventNameToString);
          symbolEventNames = zoneSymbolEventNames$1[eventName];
        }

        const symbolEventName = symbolEventNames[capture ? TRUE_STR : FALSE_STR];
        let existingTasks = target[symbolEventName];
        let isExisting = false;

        if (existingTasks) {
          // already have task registered
          isExisting = true;

          if (checkDuplicate) {
            for (let i = 0; i < existingTasks.length; i++) {
              if (compare(existingTasks[i], delegate)) {
                // same callback, same capture, same event name, just return
                return;
              }
            }
          }
        } else {
          existingTasks = target[symbolEventName] = [];
        }

        let source;
        const constructorName = target.constructor['name'];
        const targetSource = globalSources[constructorName];

        if (targetSource) {
          source = targetSource[eventName];
        }

        if (!source) {
          source = constructorName + addSource + (eventNameToString ? eventNameToString(eventName) : eventName);
        } // do not create a new object as task.data to pass those things
        // just use the global shared one


        taskData.options = options;

        if (once) {
          // if addEventListener with once options, we don't pass it to
          // native addEventListener, instead we keep the once setting
          // and handle ourselves.
          taskData.options.once = false;
        }

        taskData.target = target;
        taskData.capture = capture;
        taskData.eventName = eventName;
        taskData.isExisting = isExisting;
        const data = useGlobalCallback ? OPTIMIZED_ZONE_EVENT_TASK_DATA : undefined; // keep taskData into data to allow onScheduleEventTask to access the task information

        if (data) {
          data.taskData = taskData;
        }

        const task = zone.scheduleEventTask(source, delegate, data, customScheduleFn, customCancelFn); // should clear taskData.target to avoid memory leak
        // issue, https://github.com/angular/angular/issues/20442

        taskData.target = null; // need to clear up taskData because it is a global object

        if (data) {
          data.taskData = null;
        } // have to save those information to task in case
        // application may call task.zone.cancelTask() directly


        if (once) {
          options.once = true;
        }

        if (!(!passiveSupported && typeof task.options === 'boolean')) {
          // if not support passive, and we pass an option object
          // to addEventListener, we should save the options to task
          task.options = options;
        }

        task.target = target;
        task.capture = capture;
        task.eventName = eventName;

        if (isHandleEvent) {
          // save original delegate for compare to check duplicate
          task.originalDelegate = delegate;
        }

        if (!prepend) {
          existingTasks.push(task);
        } else {
          existingTasks.unshift(task);
        }

        if (returnTarget) {
          return target;
        }
      };
    };

    proto[ADD_EVENT_LISTENER] = makeAddListener(nativeAddEventListener, ADD_EVENT_LISTENER_SOURCE, customSchedule, customCancel, returnTarget);

    if (nativePrependEventListener) {
      proto[PREPEND_EVENT_LISTENER] = makeAddListener(nativePrependEventListener, PREPEND_EVENT_LISTENER_SOURCE, customSchedulePrepend, customCancel, returnTarget, true);
    }

    proto[REMOVE_EVENT_LISTENER] = function () {
      const target = this || _global;
      let eventName = arguments[0];

      if (patchOptions && patchOptions.transferEventName) {
        eventName = patchOptions.transferEventName(eventName);
      }

      const options = arguments[2];
      const capture = !options ? false : typeof options === 'boolean' ? true : options.capture;
      const delegate = arguments[1];

      if (!delegate) {
        return nativeRemoveEventListener.apply(this, arguments);
      }

      if (validateHandler && !validateHandler(nativeRemoveEventListener, delegate, target, arguments)) {
        return;
      }

      const symbolEventNames = zoneSymbolEventNames$1[eventName];
      let symbolEventName;

      if (symbolEventNames) {
        symbolEventName = symbolEventNames[capture ? TRUE_STR : FALSE_STR];
      }

      const existingTasks = symbolEventName && target[symbolEventName];

      if (existingTasks) {
        for (let i = 0; i < existingTasks.length; i++) {
          const existingTask = existingTasks[i];

          if (compare(existingTask, delegate)) {
            existingTasks.splice(i, 1); // set isRemoved to data for faster invokeTask check

            existingTask.isRemoved = true;

            if (existingTasks.length === 0) {
              // all tasks for the eventName + capture have gone,
              // remove globalZoneAwareCallback and remove the task cache from target
              existingTask.allRemoved = true;
              target[symbolEventName] = null; // in the target, we have an event listener which is added by on_property
              // such as target.onclick = function() {}, so we need to clear this internal
              // property too if all delegates all removed

              if (typeof eventName === 'string') {
                const onPropertySymbol = ZONE_SYMBOL_PREFIX + 'ON_PROPERTY' + eventName;
                target[onPropertySymbol] = null;
              }
            }

            existingTask.zone.cancelTask(existingTask);

            if (returnTarget) {
              return target;
            }

            return;
          }
        }
      } // issue 930, didn't find the event name or callback
      // from zone kept existingTasks, the callback maybe
      // added outside of zone, we need to call native removeEventListener
      // to try to remove it.


      return nativeRemoveEventListener.apply(this, arguments);
    };

    proto[LISTENERS_EVENT_LISTENER] = function () {
      const target = this || _global;
      let eventName = arguments[0];

      if (patchOptions && patchOptions.transferEventName) {
        eventName = patchOptions.transferEventName(eventName);
      }

      const listeners = [];
      const tasks = findEventTasks(target, eventNameToString ? eventNameToString(eventName) : eventName);

      for (let i = 0; i < tasks.length; i++) {
        const task = tasks[i];
        let delegate = task.originalDelegate ? task.originalDelegate : task.callback;
        listeners.push(delegate);
      }

      return listeners;
    };

    proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER] = function () {
      const target = this || _global;
      let eventName = arguments[0];

      if (!eventName) {
        const keys = Object.keys(target);

        for (let i = 0; i < keys.length; i++) {
          const prop = keys[i];
          const match = EVENT_NAME_SYMBOL_REGX.exec(prop);
          let evtName = match && match[1]; // in nodejs EventEmitter, removeListener event is
          // used for monitoring the removeListener call,
          // so just keep removeListener eventListener until
          // all other eventListeners are removed

          if (evtName && evtName !== 'removeListener') {
            this[REMOVE_ALL_LISTENERS_EVENT_LISTENER].call(this, evtName);
          }
        } // remove removeListener listener finally


        this[REMOVE_ALL_LISTENERS_EVENT_LISTENER].call(this, 'removeListener');
      } else {
        if (patchOptions && patchOptions.transferEventName) {
          eventName = patchOptions.transferEventName(eventName);
        }

        const symbolEventNames = zoneSymbolEventNames$1[eventName];

        if (symbolEventNames) {
          const symbolEventName = symbolEventNames[FALSE_STR];
          const symbolCaptureEventName = symbolEventNames[TRUE_STR];
          const tasks = target[symbolEventName];
          const captureTasks = target[symbolCaptureEventName];

          if (tasks) {
            const removeTasks = tasks.slice();

            for (let i = 0; i < removeTasks.length; i++) {
              const task = removeTasks[i];
              let delegate = task.originalDelegate ? task.originalDelegate : task.callback;
              this[REMOVE_EVENT_LISTENER].call(this, eventName, delegate, task.options);
            }
          }

          if (captureTasks) {
            const removeTasks = captureTasks.slice();

            for (let i = 0; i < removeTasks.length; i++) {
              const task = removeTasks[i];
              let delegate = task.originalDelegate ? task.originalDelegate : task.callback;
              this[REMOVE_EVENT_LISTENER].call(this, eventName, delegate, task.options);
            }
          }
        }
      }

      if (returnTarget) {
        return this;
      }
    }; // for native toString patch


    attachOriginToPatched(proto[ADD_EVENT_LISTENER], nativeAddEventListener);
    attachOriginToPatched(proto[REMOVE_EVENT_LISTENER], nativeRemoveEventListener);

    if (nativeRemoveAllListeners) {
      attachOriginToPatched(proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER], nativeRemoveAllListeners);
    }

    if (nativeListeners) {
      attachOriginToPatched(proto[LISTENERS_EVENT_LISTENER], nativeListeners);
    }

    return true;
  }

  let results = [];

  for (let i = 0; i < apis.length; i++) {
    results[i] = patchEventTargetMethods(apis[i], patchOptions);
  }

  return results;
}

function findEventTasks(target, eventName) {
  if (!eventName) {
    const foundTasks = [];

    for (let prop in target) {
      const match = EVENT_NAME_SYMBOL_REGX.exec(prop);
      let evtName = match && match[1];

      if (evtName && (!eventName || evtName === eventName)) {
        const tasks = target[prop];

        if (tasks) {
          for (let i = 0; i < tasks.length; i++) {
            foundTasks.push(tasks[i]);
          }
        }
      }
    }

    return foundTasks;
  }

  let symbolEventName = zoneSymbolEventNames$1[eventName];

  if (!symbolEventName) {
    prepareEventNames(eventName);
    symbolEventName = zoneSymbolEventNames$1[eventName];
  }

  const captureFalseTasks = target[symbolEventName[FALSE_STR]];
  const captureTrueTasks = target[symbolEventName[TRUE_STR]];

  if (!captureFalseTasks) {
    return captureTrueTasks ? captureTrueTasks.slice() : [];
  } else {
    return captureTrueTasks ? captureFalseTasks.concat(captureTrueTasks) : captureFalseTasks.slice();
  }
}

function patchEventPrototype(global, api) {
  const Event = global['Event'];

  if (Event && Event.prototype) {
    api.patchMethod(Event.prototype, 'stopImmediatePropagation', delegate => function (self, args) {
      self[IMMEDIATE_PROPAGATION_SYMBOL] = true; // we need to call the native stopImmediatePropagation
      // in case in some hybrid application, some part of
      // application will be controlled by zone, some are not

      delegate && delegate.apply(self, args);
    });
  }
}
/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */


function patchCallbacks(api, target, targetName, method, callbacks) {
  const symbol = Zone.__symbol__(method);

  if (target[symbol]) {
    return;
  }

  const nativeDelegate = target[symbol] = target[method];

  target[method] = function (name, opts, options) {
    if (opts && opts.prototype) {
      callbacks.forEach(function (callback) {
        const source = `${targetName}.${method}::` + callback;
        const prototype = opts.prototype;

        if (prototype.hasOwnProperty(callback)) {
          const descriptor = api.ObjectGetOwnPropertyDescriptor(prototype, callback);

          if (descriptor && descriptor.value) {
            descriptor.value = api.wrapWithCurrentZone(descriptor.value, source);

            api._redefineProperty(opts.prototype, callback, descriptor);
          } else if (prototype[callback]) {
            prototype[callback] = api.wrapWithCurrentZone(prototype[callback], source);
          }
        } else if (prototype[callback]) {
          prototype[callback] = api.wrapWithCurrentZone(prototype[callback], source);
        }
      });
    }

    return nativeDelegate.call(target, name, opts, options);
  };

  api.attachOriginToPatched(target[method], nativeDelegate);
}
/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */


const globalEventHandlersEventNames = ['abort', 'animationcancel', 'animationend', 'animationiteration', 'auxclick', 'beforeinput', 'blur', 'cancel', 'canplay', 'canplaythrough', 'change', 'compositionstart', 'compositionupdate', 'compositionend', 'cuechange', 'click', 'close', 'contextmenu', 'curechange', 'dblclick', 'drag', 'dragend', 'dragenter', 'dragexit', 'dragleave', 'dragover', 'drop', 'durationchange', 'emptied', 'ended', 'error', 'focus', 'focusin', 'focusout', 'gotpointercapture', 'input', 'invalid', 'keydown', 'keypress', 'keyup', 'load', 'loadstart', 'loadeddata', 'loadedmetadata', 'lostpointercapture', 'mousedown', 'mouseenter', 'mouseleave', 'mousemove', 'mouseout', 'mouseover', 'mouseup', 'mousewheel', 'orientationchange', 'pause', 'play', 'playing', 'pointercancel', 'pointerdown', 'pointerenter', 'pointerleave', 'pointerlockchange', 'mozpointerlockchange', 'webkitpointerlockerchange', 'pointerlockerror', 'mozpointerlockerror', 'webkitpointerlockerror', 'pointermove', 'pointout', 'pointerover', 'pointerup', 'progress', 'ratechange', 'reset', 'resize', 'scroll', 'seeked', 'seeking', 'select', 'selectionchange', 'selectstart', 'show', 'sort', 'stalled', 'submit', 'suspend', 'timeupdate', 'volumechange', 'touchcancel', 'touchmove', 'touchstart', 'touchend', 'transitioncancel', 'transitionend', 'waiting', 'wheel'];
const documentEventNames = ['afterscriptexecute', 'beforescriptexecute', 'DOMContentLoaded', 'freeze', 'fullscreenchange', 'mozfullscreenchange', 'webkitfullscreenchange', 'msfullscreenchange', 'fullscreenerror', 'mozfullscreenerror', 'webkitfullscreenerror', 'msfullscreenerror', 'readystatechange', 'visibilitychange', 'resume'];
const windowEventNames = ['absolutedeviceorientation', 'afterinput', 'afterprint', 'appinstalled', 'beforeinstallprompt', 'beforeprint', 'beforeunload', 'devicelight', 'devicemotion', 'deviceorientation', 'deviceorientationabsolute', 'deviceproximity', 'hashchange', 'languagechange', 'message', 'mozbeforepaint', 'offline', 'online', 'paint', 'pageshow', 'pagehide', 'popstate', 'rejectionhandled', 'storage', 'unhandledrejection', 'unload', 'userproximity', 'vrdisplayconnected', 'vrdisplaydisconnected', 'vrdisplaypresentchange'];
const htmlElementEventNames = ['beforecopy', 'beforecut', 'beforepaste', 'copy', 'cut', 'paste', 'dragstart', 'loadend', 'animationstart', 'search', 'transitionrun', 'transitionstart', 'webkitanimationend', 'webkitanimationiteration', 'webkitanimationstart', 'webkittransitionend'];
const mediaElementEventNames = ['encrypted', 'waitingforkey', 'msneedkey', 'mozinterruptbegin', 'mozinterruptend'];
const ieElementEventNames = ['activate', 'afterupdate', 'ariarequest', 'beforeactivate', 'beforedeactivate', 'beforeeditfocus', 'beforeupdate', 'cellchange', 'controlselect', 'dataavailable', 'datasetchanged', 'datasetcomplete', 'errorupdate', 'filterchange', 'layoutcomplete', 'losecapture', 'move', 'moveend', 'movestart', 'propertychange', 'resizeend', 'resizestart', 'rowenter', 'rowexit', 'rowsdelete', 'rowsinserted', 'command', 'compassneedscalibration', 'deactivate', 'help', 'mscontentzoom', 'msmanipulationstatechanged', 'msgesturechange', 'msgesturedoubletap', 'msgestureend', 'msgesturehold', 'msgesturestart', 'msgesturetap', 'msgotpointercapture', 'msinertiastart', 'mslostpointercapture', 'mspointercancel', 'mspointerdown', 'mspointerenter', 'mspointerhover', 'mspointerleave', 'mspointermove', 'mspointerout', 'mspointerover', 'mspointerup', 'pointerout', 'mssitemodejumplistitemremoved', 'msthumbnailclick', 'stop', 'storagecommit'];
const webglEventNames = ['webglcontextrestored', 'webglcontextlost', 'webglcontextcreationerror'];
const formEventNames = ['autocomplete', 'autocompleteerror'];
const detailEventNames = ['toggle'];
const frameEventNames = ['load'];
const frameSetEventNames = ['blur', 'error', 'focus', 'load', 'resize', 'scroll', 'messageerror'];
const marqueeEventNames = ['bounce', 'finish', 'start'];
const XMLHttpRequestEventNames = ['loadstart', 'progress', 'abort', 'error', 'load', 'progress', 'timeout', 'loadend', 'readystatechange'];
const IDBIndexEventNames = ['upgradeneeded', 'complete', 'abort', 'success', 'error', 'blocked', 'versionchange', 'close'];
const websocketEventNames = ['close', 'error', 'open', 'message'];
const workerEventNames = ['error', 'message'];
const eventNames = globalEventHandlersEventNames.concat(webglEventNames, formEventNames, detailEventNames, documentEventNames, windowEventNames, htmlElementEventNames, ieElementEventNames);

function filterProperties(target, onProperties, ignoreProperties) {
  if (!ignoreProperties || ignoreProperties.length === 0) {
    return onProperties;
  }

  const tip = ignoreProperties.filter(ip => ip.target === target);

  if (!tip || tip.length === 0) {
    return onProperties;
  }

  const targetIgnoreProperties = tip[0].ignoreProperties;
  return onProperties.filter(op => targetIgnoreProperties.indexOf(op) === -1);
}

function patchFilteredProperties(target, onProperties, ignoreProperties, prototype) {
  // check whether target is available, sometimes target will be undefined
  // because different browser or some 3rd party plugin.
  if (!target) {
    return;
  }

  const filteredProperties = filterProperties(target, onProperties, ignoreProperties);
  patchOnProperties(target, filteredProperties, prototype);
}

function propertyDescriptorPatch(api, _global) {
  if (isNode && !isMix) {
    return;
  }

  if (Zone[api.symbol('patchEvents')]) {
    // events are already been patched by legacy patch.
    return;
  }

  const supportsWebSocket = typeof WebSocket !== 'undefined';
  const ignoreProperties = _global['__Zone_ignore_on_properties']; // for browsers that we can patch the descriptor:  Chrome & Firefox

  if (isBrowser) {
    const internalWindow = window;
    const ignoreErrorProperties = isIE() ? [{
      target: internalWindow,
      ignoreProperties: ['error']
    }] : []; // in IE/Edge, onProp not exist in window object, but in WindowPrototype
    // so we need to pass WindowPrototype to check onProp exist or not

    patchFilteredProperties(internalWindow, eventNames.concat(['messageerror']), ignoreProperties ? ignoreProperties.concat(ignoreErrorProperties) : ignoreProperties, ObjectGetPrototypeOf(internalWindow));
    patchFilteredProperties(Document.prototype, eventNames, ignoreProperties);

    if (typeof internalWindow['SVGElement'] !== 'undefined') {
      patchFilteredProperties(internalWindow['SVGElement'].prototype, eventNames, ignoreProperties);
    }

    patchFilteredProperties(Element.prototype, eventNames, ignoreProperties);
    patchFilteredProperties(HTMLElement.prototype, eventNames, ignoreProperties);
    patchFilteredProperties(HTMLMediaElement.prototype, mediaElementEventNames, ignoreProperties);
    patchFilteredProperties(HTMLFrameSetElement.prototype, windowEventNames.concat(frameSetEventNames), ignoreProperties);
    patchFilteredProperties(HTMLBodyElement.prototype, windowEventNames.concat(frameSetEventNames), ignoreProperties);
    patchFilteredProperties(HTMLFrameElement.prototype, frameEventNames, ignoreProperties);
    patchFilteredProperties(HTMLIFrameElement.prototype, frameEventNames, ignoreProperties);
    const HTMLMarqueeElement = internalWindow['HTMLMarqueeElement'];

    if (HTMLMarqueeElement) {
      patchFilteredProperties(HTMLMarqueeElement.prototype, marqueeEventNames, ignoreProperties);
    }

    const Worker = internalWindow['Worker'];

    if (Worker) {
      patchFilteredProperties(Worker.prototype, workerEventNames, ignoreProperties);
    }
  }

  const XMLHttpRequest = _global['XMLHttpRequest'];

  if (XMLHttpRequest) {
    // XMLHttpRequest is not available in ServiceWorker, so we need to check here
    patchFilteredProperties(XMLHttpRequest.prototype, XMLHttpRequestEventNames, ignoreProperties);
  }

  const XMLHttpRequestEventTarget = _global['XMLHttpRequestEventTarget'];

  if (XMLHttpRequestEventTarget) {
    patchFilteredProperties(XMLHttpRequestEventTarget && XMLHttpRequestEventTarget.prototype, XMLHttpRequestEventNames, ignoreProperties);
  }

  if (typeof IDBIndex !== 'undefined') {
    patchFilteredProperties(IDBIndex.prototype, IDBIndexEventNames, ignoreProperties);
    patchFilteredProperties(IDBRequest.prototype, IDBIndexEventNames, ignoreProperties);
    patchFilteredProperties(IDBOpenDBRequest.prototype, IDBIndexEventNames, ignoreProperties);
    patchFilteredProperties(IDBDatabase.prototype, IDBIndexEventNames, ignoreProperties);
    patchFilteredProperties(IDBTransaction.prototype, IDBIndexEventNames, ignoreProperties);
    patchFilteredProperties(IDBCursor.prototype, IDBIndexEventNames, ignoreProperties);
  }

  if (supportsWebSocket) {
    patchFilteredProperties(WebSocket.prototype, websocketEventNames, ignoreProperties);
  }
}
/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */


Zone.__load_patch('util', (global, Zone, api) => {
  api.patchOnProperties = patchOnProperties;
  api.patchMethod = patchMethod;
  api.bindArguments = bindArguments;
  api.patchMacroTask = patchMacroTask; // In earlier version of zone.js (<0.9.0), we use env name `__zone_symbol__BLACK_LISTED_EVENTS` to
  // define which events will not be patched by `Zone.js`.
  // In newer version (>=0.9.0), we change the env name to `__zone_symbol__UNPATCHED_EVENTS` to keep
  // the name consistent with angular repo.
  // The  `__zone_symbol__BLACK_LISTED_EVENTS` is deprecated, but it is still be supported for
  // backwards compatibility.

  const SYMBOL_BLACK_LISTED_EVENTS = Zone.__symbol__('BLACK_LISTED_EVENTS');

  const SYMBOL_UNPATCHED_EVENTS = Zone.__symbol__('UNPATCHED_EVENTS');

  if (global[SYMBOL_UNPATCHED_EVENTS]) {
    global[SYMBOL_BLACK_LISTED_EVENTS] = global[SYMBOL_UNPATCHED_EVENTS];
  }

  if (global[SYMBOL_BLACK_LISTED_EVENTS]) {
    Zone[SYMBOL_BLACK_LISTED_EVENTS] = Zone[SYMBOL_UNPATCHED_EVENTS] = global[SYMBOL_BLACK_LISTED_EVENTS];
  }

  api.patchEventPrototype = patchEventPrototype;
  api.patchEventTarget = patchEventTarget;
  api.isIEOrEdge = isIEOrEdge;
  api.ObjectDefineProperty = ObjectDefineProperty;
  api.ObjectGetOwnPropertyDescriptor = ObjectGetOwnPropertyDescriptor;
  api.ObjectCreate = ObjectCreate;
  api.ArraySlice = ArraySlice;
  api.patchClass = patchClass;
  api.wrapWithCurrentZone = wrapWithCurrentZone;
  api.filterProperties = filterProperties;
  api.attachOriginToPatched = attachOriginToPatched;
  api._redefineProperty = Object.defineProperty;
  api.patchCallbacks = patchCallbacks;

  api.getGlobalObjects = () => ({
    globalSources,
    zoneSymbolEventNames: zoneSymbolEventNames$1,
    eventNames,
    isBrowser,
    isMix,
    isNode,
    TRUE_STR,
    FALSE_STR,
    ZONE_SYMBOL_PREFIX,
    ADD_EVENT_LISTENER_STR,
    REMOVE_EVENT_LISTENER_STR
  });
});
/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */


const taskSymbol = zoneSymbol('zoneTask');

function patchTimer(window, setName, cancelName, nameSuffix) {
  let setNative = null;
  let clearNative = null;
  setName += nameSuffix;
  cancelName += nameSuffix;
  const tasksByHandleId = {};

  function scheduleTask(task) {
    const data = task.data;

    data.args[0] = function () {
      return task.invoke.apply(this, arguments);
    };

    data.handleId = setNative.apply(window, data.args);
    return task;
  }

  function clearTask(task) {
    return clearNative.call(window, task.data.handleId);
  }

  setNative = patchMethod(window, setName, delegate => function (self, args) {
    if (typeof args[0] === 'function') {
      const options = {
        isPeriodic: nameSuffix === 'Interval',
        delay: nameSuffix === 'Timeout' || nameSuffix === 'Interval' ? args[1] || 0 : undefined,
        args: args
      };
      const callback = args[0];

      args[0] = function timer() {
        try {
          return callback.apply(this, arguments);
        } finally {
          // issue-934, task will be cancelled
          // even it is a periodic task such as
          // setInterval
          // https://github.com/angular/angular/issues/40387
          // Cleanup tasksByHandleId should be handled before scheduleTask
          // Since some zoneSpec may intercept and doesn't trigger
          // scheduleFn(scheduleTask) provided here.
          if (!options.isPeriodic) {
            if (typeof options.handleId === 'number') {
              // in non-nodejs env, we remove timerId
              // from local cache
              delete tasksByHandleId[options.handleId];
            } else if (options.handleId) {
              // Node returns complex objects as handleIds
              // we remove task reference from timer object
              options.handleId[taskSymbol] = null;
            }
          }
        }
      };

      const task = scheduleMacroTaskWithCurrentZone(setName, args[0], options, scheduleTask, clearTask);

      if (!task) {
        return task;
      } // Node.js must additionally support the ref and unref functions.


      const handle = task.data.handleId;

      if (typeof handle === 'number') {
        // for non nodejs env, we save handleId: task
        // mapping in local cache for clearTimeout
        tasksByHandleId[handle] = task;
      } else if (handle) {
        // for nodejs env, we save task
        // reference in timerId Object for clearTimeout
        handle[taskSymbol] = task;
      } // check whether handle is null, because some polyfill or browser
      // may return undefined from setTimeout/setInterval/setImmediate/requestAnimationFrame


      if (handle && handle.ref && handle.unref && typeof handle.ref === 'function' && typeof handle.unref === 'function') {
        task.ref = handle.ref.bind(handle);
        task.unref = handle.unref.bind(handle);
      }

      if (typeof handle === 'number' || handle) {
        return handle;
      }

      return task;
    } else {
      // cause an error by calling it directly.
      return delegate.apply(window, args);
    }
  });
  clearNative = patchMethod(window, cancelName, delegate => function (self, args) {
    const id = args[0];
    let task;

    if (typeof id === 'number') {
      // non nodejs env.
      task = tasksByHandleId[id];
    } else {
      // nodejs env.
      task = id && id[taskSymbol]; // other environments.

      if (!task) {
        task = id;
      }
    }

    if (task && typeof task.type === 'string') {
      if (task.state !== 'notScheduled' && (task.cancelFn && task.data.isPeriodic || task.runCount === 0)) {
        if (typeof id === 'number') {
          delete tasksByHandleId[id];
        } else if (id) {
          id[taskSymbol] = null;
        } // Do not cancel already canceled functions


        task.zone.cancelTask(task);
      }
    } else {
      // cause an error by calling it directly.
      delegate.apply(window, args);
    }
  });
}
/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */


function patchCustomElements(_global, api) {
  const {
    isBrowser,
    isMix
  } = api.getGlobalObjects();

  if (!isBrowser && !isMix || !_global['customElements'] || !('customElements' in _global)) {
    return;
  }

  const callbacks = ['connectedCallback', 'disconnectedCallback', 'adoptedCallback', 'attributeChangedCallback'];
  api.patchCallbacks(api, _global.customElements, 'customElements', 'define', callbacks);
}
/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */


function eventTargetPatch(_global, api) {
  if (Zone[api.symbol('patchEventTarget')]) {
    // EventTarget is already patched.
    return;
  }

  const {
    eventNames,
    zoneSymbolEventNames,
    TRUE_STR,
    FALSE_STR,
    ZONE_SYMBOL_PREFIX
  } = api.getGlobalObjects(); //  predefine all __zone_symbol__ + eventName + true/false string

  for (let i = 0; i < eventNames.length; i++) {
    const eventName = eventNames[i];
    const falseEventName = eventName + FALSE_STR;
    const trueEventName = eventName + TRUE_STR;
    const symbol = ZONE_SYMBOL_PREFIX + falseEventName;
    const symbolCapture = ZONE_SYMBOL_PREFIX + trueEventName;
    zoneSymbolEventNames[eventName] = {};
    zoneSymbolEventNames[eventName][FALSE_STR] = symbol;
    zoneSymbolEventNames[eventName][TRUE_STR] = symbolCapture;
  }

  const EVENT_TARGET = _global['EventTarget'];

  if (!EVENT_TARGET || !EVENT_TARGET.prototype) {
    return;
  }

  api.patchEventTarget(_global, [EVENT_TARGET && EVENT_TARGET.prototype]);
  return true;
}

function patchEvent(global, api) {
  api.patchEventPrototype(global, api);
}
/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */


Zone.__load_patch('legacy', global => {
  const legacyPatch = global[Zone.__symbol__('legacyPatch')];

  if (legacyPatch) {
    legacyPatch();
  }
});

Zone.__load_patch('queueMicrotask', (global, Zone, api) => {
  api.patchMethod(global, 'queueMicrotask', delegate => {
    return function (self, args) {
      Zone.current.scheduleMicroTask('queueMicrotask', args[0]);
    };
  });
});

Zone.__load_patch('timers', global => {
  const set = 'set';
  const clear = 'clear';
  patchTimer(global, set, clear, 'Timeout');
  patchTimer(global, set, clear, 'Interval');
  patchTimer(global, set, clear, 'Immediate');
});

Zone.__load_patch('requestAnimationFrame', global => {
  patchTimer(global, 'request', 'cancel', 'AnimationFrame');
  patchTimer(global, 'mozRequest', 'mozCancel', 'AnimationFrame');
  patchTimer(global, 'webkitRequest', 'webkitCancel', 'AnimationFrame');
});

Zone.__load_patch('blocking', (global, Zone) => {
  const blockingMethods = ['alert', 'prompt', 'confirm'];

  for (let i = 0; i < blockingMethods.length; i++) {
    const name = blockingMethods[i];
    patchMethod(global, name, (delegate, symbol, name) => {
      return function (s, args) {
        return Zone.current.run(delegate, global, args, name);
      };
    });
  }
});

Zone.__load_patch('EventTarget', (global, Zone, api) => {
  patchEvent(global, api);
  eventTargetPatch(global, api); // patch XMLHttpRequestEventTarget's addEventListener/removeEventListener

  const XMLHttpRequestEventTarget = global['XMLHttpRequestEventTarget'];

  if (XMLHttpRequestEventTarget && XMLHttpRequestEventTarget.prototype) {
    api.patchEventTarget(global, [XMLHttpRequestEventTarget.prototype]);
  }
});

Zone.__load_patch('MutationObserver', (global, Zone, api) => {
  patchClass('MutationObserver');
  patchClass('WebKitMutationObserver');
});

Zone.__load_patch('IntersectionObserver', (global, Zone, api) => {
  patchClass('IntersectionObserver');
});

Zone.__load_patch('FileReader', (global, Zone, api) => {
  patchClass('FileReader');
});

Zone.__load_patch('on_property', (global, Zone, api) => {
  propertyDescriptorPatch(api, global);
});

Zone.__load_patch('customElements', (global, Zone, api) => {
  patchCustomElements(global, api);
});

Zone.__load_patch('XHR', (global, Zone) => {
  // Treat XMLHttpRequest as a macrotask.
  patchXHR(global);
  const XHR_TASK = zoneSymbol('xhrTask');
  const XHR_SYNC = zoneSymbol('xhrSync');
  const XHR_LISTENER = zoneSymbol('xhrListener');
  const XHR_SCHEDULED = zoneSymbol('xhrScheduled');
  const XHR_URL = zoneSymbol('xhrURL');
  const XHR_ERROR_BEFORE_SCHEDULED = zoneSymbol('xhrErrorBeforeScheduled');

  function patchXHR(window) {
    const XMLHttpRequest = window['XMLHttpRequest'];

    if (!XMLHttpRequest) {
      // XMLHttpRequest is not available in service worker
      return;
    }

    const XMLHttpRequestPrototype = XMLHttpRequest.prototype;

    function findPendingTask(target) {
      return target[XHR_TASK];
    }

    let oriAddListener = XMLHttpRequestPrototype[ZONE_SYMBOL_ADD_EVENT_LISTENER];
    let oriRemoveListener = XMLHttpRequestPrototype[ZONE_SYMBOL_REMOVE_EVENT_LISTENER];

    if (!oriAddListener) {
      const XMLHttpRequestEventTarget = window['XMLHttpRequestEventTarget'];

      if (XMLHttpRequestEventTarget) {
        const XMLHttpRequestEventTargetPrototype = XMLHttpRequestEventTarget.prototype;
        oriAddListener = XMLHttpRequestEventTargetPrototype[ZONE_SYMBOL_ADD_EVENT_LISTENER];
        oriRemoveListener = XMLHttpRequestEventTargetPrototype[ZONE_SYMBOL_REMOVE_EVENT_LISTENER];
      }
    }

    const READY_STATE_CHANGE = 'readystatechange';
    const SCHEDULED = 'scheduled';

    function scheduleTask(task) {
      const data = task.data;
      const target = data.target;
      target[XHR_SCHEDULED] = false;
      target[XHR_ERROR_BEFORE_SCHEDULED] = false; // remove existing event listener

      const listener = target[XHR_LISTENER];

      if (!oriAddListener) {
        oriAddListener = target[ZONE_SYMBOL_ADD_EVENT_LISTENER];
        oriRemoveListener = target[ZONE_SYMBOL_REMOVE_EVENT_LISTENER];
      }

      if (listener) {
        oriRemoveListener.call(target, READY_STATE_CHANGE, listener);
      }

      const newListener = target[XHR_LISTENER] = () => {
        if (target.readyState === target.DONE) {
          // sometimes on some browsers XMLHttpRequest will fire onreadystatechange with
          // readyState=4 multiple times, so we need to check task state here
          if (!data.aborted && target[XHR_SCHEDULED] && task.state === SCHEDULED) {
            // check whether the xhr has registered onload listener
            // if that is the case, the task should invoke after all
            // onload listeners finish.
            // Also if the request failed without response (status = 0), the load event handler
            // will not be triggered, in that case, we should also invoke the placeholder callback
            // to close the XMLHttpRequest::send macroTask.
            // https://github.com/angular/angular/issues/38795
            const loadTasks = target[Zone.__symbol__('loadfalse')];

            if (target.status !== 0 && loadTasks && loadTasks.length > 0) {
              const oriInvoke = task.invoke;

              task.invoke = function () {
                // need to load the tasks again, because in other
                // load listener, they may remove themselves
                const loadTasks = target[Zone.__symbol__('loadfalse')];

                for (let i = 0; i < loadTasks.length; i++) {
                  if (loadTasks[i] === task) {
                    loadTasks.splice(i, 1);
                  }
                }

                if (!data.aborted && task.state === SCHEDULED) {
                  oriInvoke.call(task);
                }
              };

              loadTasks.push(task);
            } else {
              task.invoke();
            }
          } else if (!data.aborted && target[XHR_SCHEDULED] === false) {
            // error occurs when xhr.send()
            target[XHR_ERROR_BEFORE_SCHEDULED] = true;
          }
        }
      };

      oriAddListener.call(target, READY_STATE_CHANGE, newListener);
      const storedTask = target[XHR_TASK];

      if (!storedTask) {
        target[XHR_TASK] = task;
      }

      sendNative.apply(target, data.args);
      target[XHR_SCHEDULED] = true;
      return task;
    }

    function placeholderCallback() {}

    function clearTask(task) {
      const data = task.data; // Note - ideally, we would call data.target.removeEventListener here, but it's too late
      // to prevent it from firing. So instead, we store info for the event listener.

      data.aborted = true;
      return abortNative.apply(data.target, data.args);
    }

    const openNative = patchMethod(XMLHttpRequestPrototype, 'open', () => function (self, args) {
      self[XHR_SYNC] = args[2] == false;
      self[XHR_URL] = args[1];
      return openNative.apply(self, args);
    });
    const XMLHTTPREQUEST_SOURCE = 'XMLHttpRequest.send';
    const fetchTaskAborting = zoneSymbol('fetchTaskAborting');
    const fetchTaskScheduling = zoneSymbol('fetchTaskScheduling');
    const sendNative = patchMethod(XMLHttpRequestPrototype, 'send', () => function (self, args) {
      if (Zone.current[fetchTaskScheduling] === true) {
        // a fetch is scheduling, so we are using xhr to polyfill fetch
        // and because we already schedule macroTask for fetch, we should
        // not schedule a macroTask for xhr again
        return sendNative.apply(self, args);
      }

      if (self[XHR_SYNC]) {
        // if the XHR is sync there is no task to schedule, just execute the code.
        return sendNative.apply(self, args);
      } else {
        const options = {
          target: self,
          url: self[XHR_URL],
          isPeriodic: false,
          args: args,
          aborted: false
        };
        const task = scheduleMacroTaskWithCurrentZone(XMLHTTPREQUEST_SOURCE, placeholderCallback, options, scheduleTask, clearTask);

        if (self && self[XHR_ERROR_BEFORE_SCHEDULED] === true && !options.aborted && task.state === SCHEDULED) {
          // xhr request throw error when send
          // we should invoke task instead of leaving a scheduled
          // pending macroTask
          task.invoke();
        }
      }
    });
    const abortNative = patchMethod(XMLHttpRequestPrototype, 'abort', () => function (self, args) {
      const task = findPendingTask(self);

      if (task && typeof task.type == 'string') {
        // If the XHR has already completed, do nothing.
        // If the XHR has already been aborted, do nothing.
        // Fix #569, call abort multiple times before done will cause
        // macroTask task count be negative number
        if (task.cancelFn == null || task.data && task.data.aborted) {
          return;
        }

        task.zone.cancelTask(task);
      } else if (Zone.current[fetchTaskAborting] === true) {
        // the abort is called from fetch polyfill, we need to call native abort of XHR.
        return abortNative.apply(self, args);
      } // Otherwise, we are trying to abort an XHR which has not yet been sent, so there is no
      // task
      // to cancel. Do nothing.

    });
  }
});

Zone.__load_patch('geolocation', global => {
  /// GEO_LOCATION
  if (global['navigator'] && global['navigator'].geolocation) {
    patchPrototype(global['navigator'].geolocation, ['getCurrentPosition', 'watchPosition']);
  }
});

Zone.__load_patch('PromiseRejectionEvent', (global, Zone) => {
  // handle unhandled promise rejection
  function findPromiseRejectionHandler(evtName) {
    return function (e) {
      const eventTasks = findEventTasks(global, evtName);
      eventTasks.forEach(eventTask => {
        // windows has added unhandledrejection event listener
        // trigger the event listener
        const PromiseRejectionEvent = global['PromiseRejectionEvent'];

        if (PromiseRejectionEvent) {
          const evt = new PromiseRejectionEvent(evtName, {
            promise: e.promise,
            reason: e.rejection
          });
          eventTask.invoke(evt);
        }
      });
    };
  }

  if (global['PromiseRejectionEvent']) {
    Zone[zoneSymbol('unhandledPromiseRejectionHandler')] = findPromiseRejectionHandler('unhandledrejection');
    Zone[zoneSymbol('rejectionHandledHandler')] = findPromiseRejectionHandler('rejectionhandled');
  }
});

/***/ })

},
/******/ __webpack_require__ => { // webpackRuntimeModules
/******/ var __webpack_exec__ = (moduleId) => (__webpack_require__(__webpack_require__.s = moduleId))
/******/ var __webpack_exports__ = (__webpack_exec__(7435));
/******/ }
]);
//# sourceMappingURL=polyfills.js.map