lunaisadev-website-old/node_modules/rxjs/observable/PromiseObservable.js.map

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If the Promise resolves with a value, the output Observable\n   * emits that resolved value as a `next`, and then completes. If the Promise\n   * is rejected, then the output Observable emits the corresponding Error.\n   *\n   * @example <caption>Convert the Promise returned by Fetch to an Observable</caption>\n   * var result = Rx.Observable.fromPromise(fetch('http://myserver.com/'));\n   * result.subscribe(x => console.log(x), e => console.error(e));\n   *\n   * @see {@link bindCallback}\n   * @see {@link from}\n   *\n   * @param {PromiseLike<T>} promise The promise to be converted.\n   * @param {Scheduler} [scheduler] An optional IScheduler to use for scheduling\n   * the delivery of the resolved value (or the rejection).\n   * @return {Observable<T>} An Observable which wraps the Promise.\n   * @static true\n   * @name fromPromise\n   * @owner Observable\n   */\n  static create<T>(promise: PromiseLike<T>, scheduler?: IScheduler): Observable<T> {\n    return new PromiseObservable(promise, scheduler);\n  }\n\n  constructor(private promise: PromiseLike<T>, private scheduler?: IScheduler) {\n    super();\n  }\n\n  /** @deprecated internal use only */ _subscribe(subscriber: Subscriber<T>): TeardownLogic {\n    const promise = this.promise;\n    const scheduler = this.scheduler;\n\n    if (scheduler == null) {\n      if (this._isScalar) {\n        if (!subscriber.closed) {\n          subscriber.next(this.value);\n          subscriber.complete();\n        }\n      } else {\n        promise.then(\n          (value) => {\n            this.value = value;\n            this._isScalar = true;\n            if (!subscriber.closed) {\n              subscriber.next(value);\n              subscriber.complete();\n            }\n          },\n          (err) => {\n            if (!subscriber.closed) {\n              subscriber.error(err);\n            }\n          }\n        )\n        .then(null, err => {\n          // escape the promise trap, throw unhandled errors\n          root.setTimeout(() => { throw err; });\n        });\n      }\n    } else {\n      if (this._isScalar) {\n        if (!subscriber.closed) {\n          return scheduler.schedule(dispatchNext, 0, { value: this.value, subscriber });\n        }\n      } else {\n        promise.then(\n          (value) => {\n            this.value = value;\n            this._isScalar = true;\n            if (!subscriber.closed) {\n              subscriber.add(scheduler.schedule(dispatchNext, 0, { value, subscriber }));\n            }\n          },\n          (err) => {\n            if (!subscriber.closed) {\n              subscriber.add(scheduler.schedule(dispatchError, 0, { err, subscriber }));\n            }\n          })\n          .then(null, (err) => {\n            // escape the promise trap, throw unhandled errors\n            root.setTimeout(() => { throw err; });\n          });\n      }\n    }\n  }\n}\n\ninterface DispatchNextArg<T> {\n  subscriber: Subscriber<T>;\n  value: T;\n}\nfunction dispatchNext<T>(arg: DispatchNextArg<T>) {\n  const { value, subscriber } = arg;\n  if (!subscriber.closed) {\n    subscriber.next(value);\n    subscriber.complete();\n  }\n}\n\ninterface DispatchErrorArg<T> {\n  subscriber: Subscriber<T>;\n  err: any;\n}\nfunction dispatchError<T>(arg: DispatchErrorArg<T>) {\n  const { err, subscriber } = arg;\n  if (!subscriber.closed) {\n    subscriber.error(err);\n  }\n}\n"]}