text: import { combineAll as higherOrder } from 'rxjs/operators';
  /**
   * Converts a higher-order Observable into a first-order Observable by waiting
   * for the outer Observable to complete, then applying {@link combineLatest}.
   *
   * <span class="informal">Flattens an Observable-of-Observables by applying
   * {@link combineLatest} when the Observable-of-Observables completes.</span>
   *
   * <img src="./img/combineAll.png" width="100%">
   *
   * Takes an Observable of Observables, and collects all Observables from it.
   * Once the outer Observable completes, it subscribes to all collected
   * Observables and combines their values using the {@link combineLatest}
   * strategy, such that:
   * - Every time an inner Observable emits, the output Observable emits.
   * - When the returned observable emits, it emits all of the latest values by:
   *   - If a `project` function is provided, it is called with each recent value
   *     from each inner Observable in whatever order they arrived, and the result
   *     of the `project` function is what is emitted by the output Observable.
   *   - If there is no `project` function, an array of all of the most recent
   *     values is emitted by the output Observable.
   *
   * @example <caption>Map two click events to a finite interval Observable, then apply combineAll</caption>
   * var clicks = Rx.Observable.fromEvent(document, 'click');
   * var higherOrder = clicks.map(ev =>
   *   Rx.Observable.interval(Math.random()*2000).take(3)
   * ).take(2);
   * var result = higherOrder.combineAll();
   * result.subscribe(x => console.log(x));
   *
   * @see {@link combineLatest}
   * @see {@link mergeAll}
   *
   * @param {function} [project] An optional function to map the most recent
   * values from each inner Observable into a new result. Takes each of the most
   * recent values from each collected inner Observable as arguments, in order.
   * @return {Observable} An Observable of projected results or arrays of recent
   * values.
   * @method combineAll
   * @owner Observable
   */
  export function combineAll(project) {
      return higherOrder(project)(this);
  }
  //# sourceMappingURL=combineAll.js.map