TypeScript Promise.resolve方法代碼示例

function testHashSettled() {
    function isFulfilled<T>(state: RSVP.PromiseState<T>): state is RSVP.Resolved<T> {
        return state.state === RSVP.State.fulfilled;
    }
    let promises = {
        myPromise: RSVP.Promise.resolve(1),
        yourPromise: RSVP.Promise.resolve('2'),
        theirPromise: RSVP.Promise.resolve({ key: 3 }),
        notAPromise: 4,
    };
    RSVP.hashSettled(promises).then(function(hash) {
        if (isFulfilled(hash.myPromise)) {
            assertType<number>(hash.myPromise.value);
        }
        if (isFulfilled(hash.yourPromise)) {
            assertType<string>(hash.yourPromise.value);
        }
        if (isFulfilled(hash.theirPromise)) {
            assertType<{ key: number }>(hash.theirPromise.value);
        }
        if (isFulfilled(hash.notAPromise)) {
            assertType<number>(hash.notAPromise.value);
        }
    });
}

function testResolve() {
    assertType<RSVP.Promise<void>>(RSVP.resolve());
    assertType<RSVP.Promise<string>>(RSVP.resolve('this is a string'));
    assertType<RSVP.Promise<string>>(RSVP.resolve(RSVP.resolve('nested')));
    assertType<RSVP.Promise<string>>(RSVP.resolve(Promise.resolve('nested')));

    let promise = RSVP.Promise.resolve(1);
    let imported = resolve(1);
}

    .then(function(result: TransitionState<Route>) {
      let models = [];
      for (let i = 0; i < result.routeInfos.length; i++) {
        models.push(result.routeInfos[i].context);
      }

      assert.equal(models[0], fooModel);
      assert.equal(models[1], barModel);
      return Promise.resolve(new TransitionState());
    })

/**
  Creates an "owner" (an object that either _is_ or duck-types like an
  `Ember.ApplicationInstance`) from the provided options.

  If `options.application` is present (e.g. setup by an earlier call to
  `setApplication`) an `Ember.ApplicationInstance` is built via
  `application.buildInstance()`.

  If `options.application` is not present, we fall back to using
  `options.resolver` instead (setup via `setResolver`). This creates a mock
  "owner" by using a custom created combination of `Ember.Registry`,
  `Ember.Container`, `Ember._ContainerProxyMixin`, and
  `Ember._RegistryProxyMixin`.

  @private
  @param {Ember.Application} [application] the Ember.Application to build an instance from
  @param {Ember.Resolver} [resolver] the resolver to use to back a "mock owner"
  @returns {Promise<Ember.ApplicationInstance>} a promise resolving to the generated "owner"
*/
export default function buildOwner(
  application: Application | undefined | null,
  resolver: Resolver | undefined | null
): Promise<Owner> {
  if (application) {
    return (application.boot().then(app => app.buildInstance().boot()) as unknown) as Promise<
      Owner
    >;
  }

  if (!resolver) {
    throw new Error(
      'You must set up the ember-test-helpers environment with either `setResolver` or `setApplication` before running any tests.'
    );
  }

  let { owner } = legacyBuildRegistry(resolver) as { owner: Owner };
  return Promise.resolve(owner);
}

 getHandler: function(name: string) {
   return Promise.resolve(handlers[name] || (handlers[name] = createHandler('empty')));
 },

 function keepGoing() {
   assert.ok(true, 'continuation function was called');
   return Promise.resolve(false);
 }

 function noop() {
   return Promise.resolve(false);
 }

import RSVP from 'rsvp';

let promise1: RSVP.Promise<number, Error> = RSVP.Promise.resolve(1);
let promise1a: RSVP.Promise<number, Error> = RSVP.resolve(1);

let promise2: RSVP.Promise<number, Error> = RSVP.Promise.resolve(2);

let promise3: RSVP.Promise<number, Error> = RSVP.Promise.reject(new Error('3'));
let promise3a: RSVP.Promise<number, Error> = RSVP.reject(new Error('3'));

let promiseArray = [promise1, promise2, promise3];

let promiseHash = {
    promiseA: promise1,
    promiseB: promise2,
    promiseC: promise3,
    notAPromise: 4,
};

RSVP.Promise.all(promiseArray).then(arr => {}, err => {});
RSVP.all(promiseArray).then(arr => {}, err => {});

RSVP.Promise.race(promiseArray).then(arr => {}, err => {});
RSVP.race(promiseArray).then(arr => {}, err => {});

RSVP.allSettled(promiseArray).then(arr => {}, err => {});

let deferred = RSVP.defer();
deferred.resolve('Success');
deferred.promise.then(value => {});

// eslint-disable-next-line require-jsdoc
function fillOut(element: FormControl, text: string, delay: number) {
  const inputFunctions = text.split('').map(character => keyEntry(element, character));
  return inputFunctions.reduce((currentPromise, func) => {
    return currentPromise.then(() => delayedExecute(delay)).then(func);
  }, Promise.resolve(undefined));
}