angular-docs-cn/packages/zone.js/lib/zone.configurations.api.ts

/**
 * @license
 * Copyright Google Inc. 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
 */

/**
 * Interface of zone.js configurations.
 *
 * You can define the following configurations on the window/global object before
 * importing `dist/zone.js` to change zone.js default behaviors.
 */
interface ZoneGlobalConfigurations {
  /**
   * Disable the monkey patch of the `Node.js` `EventEmitter` API.
   *
   * By default, the `zone.js` monkey patches the `Node.js` `EventEmitter` APIs to make async
   * callbacks of those APIs in the same zone when scheduled.
   *
   * Consider the following example:
   *
   * ```
   * const EventEmitter = require('events');
   * class MyEmitter extends EventEmitter {}
   * const myEmitter = new MyEmitter();
   *
   * const zone = Zone.current.fork({name: 'myZone'});
   * zone.run(() => {
   *   myEmitter.on('event', () => {
   *     console.log('an event occurs in the zone', Zone.current.name);
   *     // the callback runs in the zone when it is scheduled,
   *     // so the output is 'an event occurs in the zone myZone'.
   *   });
   * });
   * myEmitter.emit('event');
   * ```
   *
   * If you set `__Zone_disable_EventEmtter = true` before importing zone.js,
   * `zone.js` does not monkey patch the `EventEmitter` API and the above code
   * outputs 'an event occurred <root>'.
   */
  __Zone_disable_EventEmitter?: boolean;

  /**
   * Disable the monkey patch of the `Node.js` `fs` API.
   *
   * By default, the `zone.js` monkey patches `Node.js` `fs` APIs to make async callbacks of those
   * APIs in the same zone when scheduled.
   *
   * Consider the following example:
   *
   * ```
   * const fs = require('fs');
   *
   * const zone = Zone.current.fork({name: 'myZone'});
   * zone.run(() => {
   *   fs.stat('/tmp/world', (err, stats) => {
   *     console.log('fs.stats() callback is invoked in the zone', Zone.current.name);
   *     // since the callback of the `fs.stat()` runs in the same zone
   *     // when it is called, so the output is 'fs.stats() callback is invoked in the zone myZone'.
   *   });
   * });
   * ```
   *
   * If you set `__Zone_disable_fs = true` before importing zone.js,
   * `zone.js` does not monkey patch the `fs` API and the above code
   * outputs 'get stats occurred <root>'.
   */
  __Zone_disable_fs?: boolean;

  /**
   * Disable the monkey patch of the `Node.js` `timer` API.
   *
   * By default, the `zone.js` monkey patches the `Node.js` `timer` APIs to make async callbacks of
   * those APIs in the same zone when scheduled.
   *
   * Consider the following example:
   *
   * ```
   * const zone = Zone.current.fork({name: 'myZone'});
   * zone.run(() => {
   *   setTimeout(() => {
   *     console.log('setTimeout() callback is invoked in the zone', Zone.current.name);
   *     // since the callback of `setTimeout()` runs in the same zone
   *     // when it is scheduled, so the output is 'setTimeout() callback is invoked in the zone
   *     // myZone'.
   *   });
   * });
   * ```
   *
   * If you set `__Zone_disable_timers = true` before importing zone.js,
   * `zone.js` does not monkey patch the `timer` APIs and the above code
   * outputs 'timeout <root>'.
   */
  __Zone_disable_node_timers?: boolean;

  /**
   * Disable the monkey patch of the `Node.js` `process.nextTick()` API.
   *
   * By default, `zone.js` monkey patches the `Node.js` `process.nextTick()` API to make the
   * callback in the same zone when calling `process.nextTick()`.
   *
   * Consider the following example:
   *
   * ```
   * const zone = Zone.current.fork({name: 'myZone'});
   * zone.run(() => {
   *   process.nextTick(() => {
   *     console.log('process.nextTick() callback is invoked in the zone', Zone.current.name);
   *     // since the callback of `process.nextTick()` runs in the same zone
   *     // when it is scheduled, so the output is 'process.nextTick() callback is invoked in the
   *     // zone myZone'.
   *   });
   * });
   * ```
   *
   * If you set `__Zone_disable_nextTick = true` before importing zone.js,
   * `zone.js` does not monkey patch the `process.nextTick()` API and the above code
   * outputs 'nextTick <root>'.
   */
  __Zone_disable_nextTick?: boolean;

  /**
   * Disable the monkey patch of the `Node.js` `crypto` API.
   *
   * By default, `zone.js` monkey patches the `Node.js` `crypto` APIs to make async callbacks of
   * those APIs in the same zone when called.
   *
   * Consider the following example:
   *
   * ```
   * const crypto = require('crypto');
   *
   * const zone = Zone.current.fork({name: 'myZone'});
   * zone.run(() => {
   *   crypto.randomBytes(() => {
   *     console.log('crypto.randomBytes() callback is invoked in the zone', Zone.current.name);
   *     // since the callback of `crypto.randomBytes()` runs in the same zone
   *     // when it is called, so the output is 'crypto.randomBytes() callback is invoked in the
   *     // zone myZone'.
   *   });
   * });
   * ```
   *
   * If you set `__Zone_disable_crypto = true` before importing zone.js,
   * `zone.js` does not monkey patch the `crypto` API and the above code
   * outputs 'crypto <root>'.
   */
  __Zone_disable_crypto?: boolean;

  /**
   * Disable the monkey patch of the `Object.defineProperty()` API.
   *
   * NOTE: this configuration is only available in the legacy bundle (dist/zone.js), this
   * module is not available in the evergreen bundle (zone-evergreen.js).
   *
   * In the legacy browser, by default, `zone.js` monkey patches `Object.defineProperty()`
   * `Object.create()` to try to ensure all property's configurable to be true. This patch is only
   * needed in some old mobile browsers.
   *
   * If you set `__Zone_disable_defineProperty = true` before importing zone.js,
   * `zone.js` does not monkey patch the `Object.defineProperty()` API and does not
   * modify desc.configurable to true.
   *
   */
  __Zone_disable_defineProperty?: boolean;

  /**
   * Disable the monkey patch of the browser `registerElement()` API.
   *
   * NOTE: This configuration is only available in the legacy bundle (dist/zone.js), this
   * module is not available in the evergreen bundle (zone-evergreen.js).
   *
   * In the legacy bundle, by default, `zone.js` monkey patches `registerElement()` API to make
   * async callbacks of the API in the same zone when `registerElement()` is called.
   *
   * Consider the following example:
   *
   * ```
   * const proto = Object.create(HTMLElement.prototype);
   * proto.createdCallback = function() {
   *   console.log('createdCallback is invoked in the zone', Zone.current.name);
   * };
   * proto.attachedCallback = function() {
   *   console.log('attachedCallback is invoked in the zone', Zone.current.name);
   * };
   * proto.detachedCallback = function() {
   *   console.log('detachedCallback is invoked in the zone', Zone.current.name);
   * };
   * proto.attributeChangedCallback = function() {
   *   console.log('attributeChangedCallback is invoked in the zone', Zone.current.name);
   * };
   *
   * const zone = Zone.current.fork({name: 'myZone'});
   * zone.run(() => {
   *   document.registerElement('x-elem', {prototype: proto});
   * });
   * ```
   *
   * When those callbacks are invoked, those callbacks will be in the zone when
   * `registerElement()` is called.
   *
   * If you set `__Zone_disable_registerElement = true` before importing zone.js,
   * `zone.js` does not monkey patch `registerElement()` API and the above code
   * outputs '<root>'.
   */
  __Zone_disable_registerElement?: boolean;

  /**
   * Disable the monkey patch of the browser legacy `EventTarget` API.
   *
   * NOTE: This configuration is only available in the legacy bundle (dist/zone.js), this module
   * is not available in the evergreen bundle (zone-evergreen.js).
   *
   * In some old browsers, the `EventTarget` is not available, so `zone.js` can not directly monkey
   * patch the `EventTarget`, instead zone.js patches all known Html Elements' prototypes(such as
   * HtmlDivElement). So the callback of the `addEventListener()` will be in the same zone when
   * the `addEventListener()` is called.
   *
   * Consider the following example:
   *
   * ```
   * const zone = Zone.current.fork({name: 'myZone'});
   * zone.run(() => {
   *   div.addEventListener('click', () => {
   *     console.log('div click event listener is invoked in the zone', Zone.current.name);
   *     // the output is 'div click event listener is invoked in the zone myZone'.
   *   });
   * });
   * ```
   *
   * If you set `__Zone_disable_EventTargetLegacy = true` before importing zone.js
   * in some old browsers (`EventTarget` not available).
   * `zone.js` does not monkey patch all Html Elements APIs and the above code
   * outputs 'clicked <root>'.
   */
  __Zone_disable_EventTargetLegacy?: boolean;

  /**
   * Disable the monkey patch of the browser `timer` APIs.
   *
   * By default, `zone.js` monkey patches browser timer
   * APIs(`setTimeout()`/`setInterval()`/`setImmediate()`) to make async callbacks of those APIs in
   * the same zone when scheduled.
   *
   * Consider the following example:
   *
   * ```
   * const zone = Zone.current.fork({name: 'myZone'});
   * zone.run(() => {
   *   setTimeout(() => {
   *     console.log('setTimeout() callback is invoked in the zone', Zone.current.name);
   *     // since the callback of `setTimeout()` runs in the same zone
   *     // when it is scheduled, so the output is 'setTimeout() callback is invoked in the zone
   *     // myZone'.
   *   });
   * });
   * ```
   *
   * If you set `__Zone_disable_timers = true` before importing zone.js,
   * `zone.js` does not monkey patch `timer` API and the above code
   * outputs 'timeout <root>'.
   *
   */
  __Zone_disable_timers?: boolean;

  /**
   * Disable the monkey patch of the browser `requestAnimationFrame()` API.
   *
   * By default, zone.js monkey patches the browser `requestAnimationFrame()` API
   * to make the async callback of the `requestAnimationFrame()` in the same zone when scheduled.
   *
   * Consider the following example:
   *
   * ```
   * const zone = Zone.current.fork({name: 'myZone'});
   * zone.run(() => {
   *   requestAnimationFrame(() => {
   *     console.log('requestAnimationFrame() callback is invoked in the zone', Zone.current.name);
   *     // since the callback of `requestAnimationFrame()` will be in the same zone
   *     // when it is scheduled, so the output will be 'requestAnimationFrame() callback is invoked
   *     // in the zone myZone'
   *   });
   * });
   * ```
   *
   * If you set `__Zone_disable_requestAnimationframe = true` before importing zone.js,
   * `zone.js` does not monkey patch the `requestAnimationFrame()` API and the above code
   * outputs 'raf <root>'.
   */
  __Zone_disable_requestAnimationFrame?: boolean;

  /**
   *
   * Disable the monkey patch of the browser blocking APIs(`alert()`/`prompt()`/`confirm()`).
   */
  __Zone_disable_blocking?: boolean;

  /**
   * Disable the monkey patch of the browser `EventTarget` APIs.
   *
   * By default, `zone.js` monkey patches EventTarget APIs. So the callbacks of the
   * `addEventListener()` runs in the same zone when the `addEventListener()` is called.
   *
   * Consider the following example:
   *
   * ```
   * const zone = Zone.current.fork({name: 'myZone'});
   * zone.run(() => {
   *   div.addEventListener('click', () => {
   *     console.log('div event listener is invoked in the zone', Zone.current.name);
   *     // the output is 'div event listener is invoked in the zone myZone'.
   *   });
   * });
   * ```
   *
   * If you set `__Zone_disable_EventTarget = true` before importing zone.js,
   * `zone.js` does not monkey patch EventTarget API and the above code
   * outputs 'clicked <root>'.
   *
   */
  __Zone_disable_EventTarget?: boolean;

  /**
   * Disable the monkey patch of the browser onProperty APIs(such as onclick).
   *
   * By default, zone.js monkey patches onXXX properties(such as onclick). So the callbacks of onXXX
   * properties runs in the same zone when the onXXX properties is set.
   *
   * Consider the following example:
   *
   * ```
   * const zone = Zone.current.fork({name: 'myZone'});
   * zone.run(() => {
   *   div.onclick = () => {
   *     console.log('div click event listener is invoked in the zone', Zone.current.name);
   *     // the output will be 'div click event listener is invoked in the zone myZone'
   *   }
   * });
   * ```
   *
   * If you set `__Zone_disable_on_property = true` before importing zone.js,
   * `zone.js` does not monkey patch onXXX properties and the above code
   * outputs 'clicked <root>'.
   *
   */
  __Zone_disable_on_property?: boolean;

  /**
   * Disable the monkey patch of the browser `customElements` APIs.
   *
   * By default, zone.js monkey patches `customElements` APIs to make callbacks of the custom
   * Element run in the same zone when the element is defined.
   *
   * Consider the following example:
   *
   * ```
   * class TestCustomElement extends HTMLElement {
   *   constructor() { super(); }
   *   connectedCallback() {}
   *   disconnectedCallback() {}
   *   attributeChangedCallback(attrName, oldVal, newVal) {}
   *   adoptedCallback() {}
   * }
   *
   * const zone = Zone.fork({name: 'myZone'});
   * zone.run(() => {
   *   customElements.define('x-elem', TestCustomElement);
   * });
   * ```
   *
   * All those callbacks defined in TestCustomElement runs in the zone when
   * the `customElements.define()` is called.
   *
   * If you set `__Zone_disable_customElements = true` before importing zone.js,
   * `zone.js` does not monkey patch `customElements` APIs and the above code
   * runs inside <root> zone.
   */
  __Zone_disable_customElements?: boolean;

  /**
   * Disable the monkey patch of the browser `XMLHttpRequest` APIs.
   *
   * By default, zone.js monkey patches `XMLHttpRequest` APIs to make XMLHttpRequest act
   * as macroTask.
   *
   * Consider the following example:
   *
   * ```
   * const zone = Zone.current.fork({
   *   name: 'myZone',
   *   onScheduleTask: (delegate, curr, target, task) => {
   *     console.log('task is scheduled', task.type, task.source, task.zone.name);
   *     return delegate.scheduleTask(target, task);
   *   }
   * })
   * const xhr = new XMLHttpRequest();
   * zone.run(() => {
   *   xhr.onload = function() {};
   *   xhr.open('get', '/', true);
   *   xhr.send();
   * });
   * ```
   *
   * In this example, the instance of the `XMLHttpRequest` runs in the zone and acts as macroTask,
   * so the output is 'task is scheduled macroTask, XMLHttpRequest.send, zone'.
   *
   * If you set __Zone_disable_XHR = true before importing zone.js,
   * `zone.js` does not monkey patch `XMLHttpRequest` APIs and the above onScheduleTask callback
   * will not be called.
   *
   */
  __Zone_disable_XHR?: boolean;

  /**
   * Disable the monkey patch of the browser geolocation APIs.
   *
   * By default, Zone.js monkey patches geolcation APIs to make callbacks run in the same zone
   * when those APIs are called.
   *
   * Consider the following examples:
   *
   * ```
   * const zone = Zone.current.fork({
   *   name: 'myZone'
   * });
   *
   * zone.run(() => {
   *   navigator.geolocation.getCurrentPosition(pos => {
   *     console.log('navigator.getCurrentPosition() callback is invoked in the zone',
   *     Zone.current.name);
   *     // output is 'navigator.getCurrentPosition() callback is invoked in the zone myZone'.
   *   }
   * });
   * ```
   *
   * If set you `__Zone_disable_geolocation = true` before importing zone.js,
   * `zone.js` does not monkey patch geolocation APIs and the above code
   * outputs 'getCurrentPosition <root>'.
   *
   */
  __Zone_disable_geolocation?: boolean;

  /**
   * Disable the monkey patch of the browser `canvas` APIs.
   *
   * By default, Zone.js monkey patches `canvas` APIs to make callbacks run in the same zone when
   * those APIs are called.
   *
   * Consider the following example:
   *
   * ```
   * const zone = Zone.current.fork({
   *   name: 'myZone'
   * });
   *
   * zone.run(() => {
   *   canvas.toBlob(blog => {
   *     console.log('canvas.toBlob() callback is invoked in the zone', Zone.current.name);
   *     // output is 'canvas.toBlob() callback is invoked in the zone myZone'.
   *   }
   * });
   * ```
   *
   * If you set `__Zone_disable_canvas = true` before importing zone.js,
   * `zone.js` does not monkey patch `canvas` APIs and the above code
   * outputs 'canvas.toBlob <root>'.
   */
  __Zone_disable_canvas?: boolean;

  /**
   * Disable the `Promise` monkey patch.
   *
   * By default, zone.js monkey patckes `Promise` APIs to make the `then()/catch()` callbacks in the
   * same zone when those callbacks are called.
   *
   * Consider the following examples:
   *
   * ```
   * const zone = Zone.current.fork({name: 'myZone'});
   *
   * const p = Promise.resolve(1);
   *
   * zone.run(() => {
   *   p.then(() => {
   *     console.log('then() callback is invoked in the zone', Zone.current.name);
   *     // output is 'then() callback is invoked in the zone myZone'.
   *   });
   * });
   * ```
   *
   * If you set `__Zone_disable_ZoneAwarePromise = true` before importing zone.js,
   * `zone.js` does not monkey patch `Promise` APIs and the above code
   * outputs 'promise then callback <root>'.
   */
  __Zone_disable_ZoneAwarePromise?: boolean;

  /**
   * Define event names that users don't want monkey patched by the `zone.js`.
   *
   * By default, zone.js monkey patches `EventTarget.addEventListener()`, so the event listener
   * callback runs in the zone when `addEventListener()` is called.
   *
   * But sometimes, users don't want all the event names use this patched version because it
   * has performance impact. For example, in some cases, users want `scroll` or `mousemove` event
   * listeners run with native `addEventListener()` for better performance.
   *
   * Users can achieve this goal by defining `__zone_symbol__UNPATCHED_EVENTS = ['scroll',
   * 'mousemove'];` before imporing `zone.js`.
   */
  __zone_symbol__UNPATCHED_EVENTS?: boolean;

  /**
   * Define the event names of the passive listeners.
   *
   * Now Angular doesn't support to add event listeners as passive very easily. User needs to use
   * `elem.addEventListener('scroll', listener, {passive: true});` or implements their own
   * EventManagerPlugin to do that. Angular may finally support new template syntax to support
   * passive event, for now, this configuration allows the user to define the
   * passive event names in zone.js configurations.
   *
   * User can define a global varibale like this.
   *
   * ```
   * __zone_symbol__PASSIVE_EVENTS = ['scroll'];
   * ```
   *
   * to let all `scroll` event listeners passive.
   */
  __zone_symbol__PASSIVE_EVENTS?: boolean;
}

/**
 * Interface of zone.js test configurations.
 *
 * You can define the following  configurations on the `window` or `global` object before
 * importing `dist/zone-testing.js` to change zone.js default behaviors in the test runner.
 */
interface ZoneTestConfigurations {
  /**
   * Disable the jasmine integration.
   *
   * In the zone-testing.js bundle, by default, zone monkey patches jasmine APIs
   * to make jasmine APIs run in specified zone.
   *
   * 1. Make the `describe()`/`xdescribe()`/`fdescribe()` run in the syncTestZone.
   * 2. Make the `it()`/`xit()`/`fit()`/`beforeEach()`/`afterEach()`/`beforeAll()`/`afterAll()` run
   * in the ProxyZone.
   *
   * With this patch, `async()`/`fakeAsync()` can work with the jasmine runner.
   *
   * If you set `__Zone_disable_jasmine = true` before importing `dist/zone-testing.js`,
   * `zone.js` does not monkey patch the jasmine APIs and the `async()`/`fakeAsync()` can not
   * work with the jasmine runner any longer.
   */
  __Zone_disable_jasmine?: boolean;

  /**
   * Disable the mocha integration.
   *
   * In the `zone-testing.js` bundle, by default, zone monkey patches the mocha APIs
   * to make mocha APIs run in the specified zone.
   *
   * 1. Make the `describe()`/`xdescribe()`/`fdescribe()` run in the syncTestZone.
   * 2. Make the `it()`/`xit()`/`fit()`/`beforeEach()`/`afterEach()`/`beforeAll()`/`afterAll()` run
   * in the ProxyZone.
   *
   * With this patch, `async()`/`fakeAsync()` can work with the mocha runner.
   *
   * If you set `__Zone_disable_mocha = true` before importing zone-testing.js,
   * `zone.js` does not monkey patch the mocha APIs and the `async()/`fakeAsync()` can not
   * work with the mocha runner any longer.
   */
  __Zone_disable_mocha?: boolean;

  /**
   * Disable the jest integration.
   *
   * In the zone-testing.js bundle, by default, zone monkey patches jest APIs
   * to make jest APIs run in the specified zone.
   *
   * 1. Make the `describe()`/`xdescribe()`/`fdescribe()` run in the syncTestZone.
   * 2. Make the `it()`/`xit()`/`fit()`/`beforeEach()`/`afterEach()`/`before()`/`after()` run
   * in the ProxyZone.
   *
   * With this patch, `async()`/`fakeAsync()` can work with the jest runner.
   *
   * If you set `__Zone_disable_jest = true` before importing zone-testing.js,
   * `zone.js` does not monkey patch the jest APIs and `async()`/`fakeAsync()` can not
   * work with the jest runner any longer.
   */
  __Zone_disable_jest?: boolean;

  /**
   * Disable monkey patch the jasmine clock APIs.
   *
   * By default, zone-testing.js monkey patches the `jasmine.clock()` API,
   * so the `jasmine.clock()` can work with the `fakeAsync()/tick()` API.
   *
   * Consider the following example:
   *
   * ```
   * describe('jasmine.clock integration', () => {
   *   beforeEach(() => {
   *     jasmine.clock().install();
   *   });
   *   afterEach(() => {
   *     jasmine.clock().uninstall();
   *   });
   *   it('fakeAsync test', fakeAsync(() => {
   *     setTimeout(spy, 100);
   *     expect(spy).not.toHaveBeenCalled();
   *     jasmine.clock().tick(100);
   *     expect(spy).toHaveBeenCalled();
   *   }));
   * });
   * ```
   *
   * So in the `fakeAsync()`, `jasmine.clock().tick()` works just like `tick()`.
   *
   * If you set `__zone_symbol__fakeAsyncDisablePatchingClock = true` before importing
   * zone-testing.js,`zone.js` does not monkey patch the `jasmine.clock()` APIs and the
   * `jasmine.clock()` can not work with `fakeAsync()` any longer.
   */
  __zone_symbol__fakeAsyncDisablePatchingClock?: boolean;

  /**
   * Enable auto running into `fakeAsync()` when installing the `jasmine.clock()`.
   *
   * By default, zone-testing.js does not automatically run into `fakeAsync()`
   * if the `jasmine.clock().install()` is called.
   *
   * Consider the following example:
   *
   * ```
   * describe('jasmine.clock integration', () => {
   *   beforeEach(() => {
   *     jasmine.clock().install();
   *   });
   *   afterEach(() => {
   *     jasmine.clock().uninstall();
   *   });
   *   it('fakeAsync test', fakeAsync(() => {
   *     setTimeout(spy, 100);
   *     expect(spy).not.toHaveBeenCalled();
   *     jasmine.clock().tick(100);
   *     expect(spy).toHaveBeenCalled();
   *   }));
   * });
   * ```
   *
   * So we still need to run `fakeAsync()` to make a test case in the `FakeAsyncTestZone`.
   *
   * If you set `__zone_symbol__fakeAsyncAutoFakeAsyncWhenClockPatched = true` before importing
   * zone-testing.js, `zone.js` can run test case automatically into the `FakeAsyncTestZone` without
   * calling the `fakeAsync()`.
   *
   * Consider the following example:
   *
   * ```
   * describe('jasmine.clock integration', () => {
   *   beforeEach(() => {
   *     jasmine.clock().install();
   *   });
   *   afterEach(() => {
   *     jasmine.clock().uninstall();
   *   });
   *   it('fakeAsync test', () => { // here we don't need to call fakeAsync
   *     setTimeout(spy, 100);
   *     expect(spy).not.toHaveBeenCalled();
   *     jasmine.clock().tick(100);
   *     expect(spy).toHaveBeenCalled();
   *   });
   * });
   * ```
   *
   */
  __zone_symbol__fakeAsyncAutoFakeAsyncWhenClockPatched?: boolean;

  /**
   * Enable waiting for the unresolved promise in the `async()` test.
   *
   * In the `async()` test, `AsyncTestZone` waits for all the async tasks to be finished. But if
   * some promises never resolved, by default, `AsyncTestZone` does not wait and report unexpected
   * result.
   *
   * Consider the following example:
   *
   * ```
   * describe('wait never resolved promise', () => {
   *   it('async with never resolved promise test', async(() => {
   *     const p = new Promise(() => {});
   *     p.then(() => {
   *       // do some expection.
   *     });
   *   }))
   * });
   * ```
   *
   * By default, this case passes, because the callback of `p.then()` does not
   * be called, and the `async()` does not wait there, because p is an unresolved
   * promise, so there is no pending async task.
   *
   * If you set `__zone_symbol__supportWaitUnResolvedChainedPromise = true`, the above case
   * timeouts, becasue `async()` will wait for the unresolved promise.
   */
  __zone_symbol__supportWaitUnResolvedChainedPromise?: boolean;
}

/**
 * The interface of the zone runtime configurations.
 *
 * Those configurations can be defined on the `Zone` object after
 * importing zone.js to change behaviors. The differences between
 * the `ZoneRuntimeConfigurations` and the `ZoneGlobalConfigurations` are
 *
 * 1. the `ZoneGlobalConfigurations` need to be defined on the global/window object before
 * importing `dist/zone.js`, the value of the configuration can not be changed at runtime.
 *
 * 2. the `ZoneRuntimeConfigurations` need to be defined on Zone object after importing
 * `dist/zone.js`, the value of the configuration canbe changed at runtime.
 *
 */
interface ZoneRuntimeConfigurations {
  /**
   * Ignore outputing error to console when uncaught Promise error occurs.
   *
   * By default, if uncaught Promise error occurs, zone.js outputs the
   * error to the console by calling `console.error()`.
   *
   * If you set `__zone_symbol__ignoreConsoleErrorUncaughtError = true`, `zone.js` does not output
   * uncaught error to `console.error()`.
   */
  __zone_symbol__ignoreConsoleErrorUncaughtError?: boolean;
}