text: /** PURE_IMPORTS_START .._util_root,.._Observable PURE_IMPORTS_END */
  var __extends = (this && this.__extends) || /*@__PURE__*/ (function () {
      var extendStatics = Object.setPrototypeOf ||
          ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
          function (d, b) { for (var p in b)
              if (b.hasOwnProperty(p))
                  d[p] = b[p]; };
      return function (d, b) {
          extendStatics(d, b);
          function __() { this.constructor = d; }
          d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
      };
  })();
  import { root } from '../util/root';
  import { Observable } from '../Observable';
  /**
   * We need this JSDoc comment for affecting ESDoc.
   * @extends {Ignored}
   * @hide true
   */
  var PromiseObservable = /*@__PURE__*/ (/*@__PURE__*/ function (_super) {
      __extends(PromiseObservable, _super);
      function PromiseObservable(promise, scheduler) {
          var _this = _super.call(this) || this;
          _this.promise = promise;
          _this.scheduler = scheduler;
          return _this;
      }
      /**
       * Converts a Promise to an Observable.
       *
       * <span class="informal">Returns an Observable that just emits the Promise's
       * resolved value, then completes.</span>
       *
       * Converts an ES2015 Promise or a Promises/A+ spec compliant Promise to an
       * Observable. If the Promise resolves with a value, the output Observable
       * emits that resolved value as a `next`, and then completes. If the Promise
       * is rejected, then the output Observable emits the corresponding Error.
       *
       * @example <caption>Convert the Promise returned by Fetch to an Observable</caption>
       * var result = Rx.Observable.fromPromise(fetch('http://myserver.com/'));
       * result.subscribe(x => console.log(x), e => console.error(e));
       *
       * @see {@link bindCallback}
       * @see {@link from}
       *
       * @param {PromiseLike<T>} promise The promise to be converted.
       * @param {Scheduler} [scheduler] An optional IScheduler to use for scheduling
       * the delivery of the resolved value (or the rejection).
       * @return {Observable<T>} An Observable which wraps the Promise.
       * @static true
       * @name fromPromise
       * @owner Observable
       */
      PromiseObservable.create = function (promise, scheduler) {
          return new PromiseObservable(promise, scheduler);
      };
      PromiseObservable.prototype._subscribe = function (subscriber) {
          var _this = this;
          var promise = this.promise;
          var scheduler = this.scheduler;
          if (scheduler == null) {
              if (this._isScalar) {
                  if (!subscriber.closed) {
                      subscriber.next(this.value);
                      subscriber.complete();
                  }
              }
              else {
                  promise.then(function (value) {
                      _this.value = value;
                      _this._isScalar = true;
                      if (!subscriber.closed) {
                          subscriber.next(value);
                          subscriber.complete();
                      }
                  }, function (err) {
                      if (!subscriber.closed) {
                          subscriber.error(err);
                      }
                  })
                      .then(null, function (err) {
                      // escape the promise trap, throw unhandled errors
                      root.setTimeout(function () { throw err; });
                  });
              }
          }
          else {
              if (this._isScalar) {
                  if (!subscriber.closed) {
                      return scheduler.schedule(dispatchNext, 0, { value: this.value, subscriber: subscriber });
                  }
              }
              else {
                  promise.then(function (value) {
                      _this.value = value;
                      _this._isScalar = true;
                      if (!subscriber.closed) {
                          subscriber.add(scheduler.schedule(dispatchNext, 0, { value: value, subscriber: subscriber }));
                      }
                  }, function (err) {
                      if (!subscriber.closed) {
                          subscriber.add(scheduler.schedule(dispatchError, 0, { err: err, subscriber: subscriber }));
                      }
                  })
                      .then(null, function (err) {
                      // escape the promise trap, throw unhandled errors
                      root.setTimeout(function () { throw err; });
                  });
              }
          }
      };
      return PromiseObservable;
  }(Observable));
  export { PromiseObservable };
  function dispatchNext(arg) {
      var value = arg.value, subscriber = arg.subscriber;
      if (!subscriber.closed) {
          subscriber.next(value);
          subscriber.complete();
      }
  }
  function dispatchError(arg) {
      var err = arg.err, subscriber = arg.subscriber;
      if (!subscriber.closed) {
          subscriber.error(err);
      }
  }
  //# sourceMappingURL=PromiseObservable.js.map 
  