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PATH: usr / local / lib / node_modules / ghost-cli / node_modules / rxjs / src / internal / operators

import { Operator } from '../Operator';
import { Subscriber } from '../Subscriber';
import { Observable } from '../Observable';
import { SubscribeOnObservable } from '../observable/SubscribeOnObservable';
import { MonoTypeOperatorFunction, SchedulerLike, TeardownLogic } from '../types';

/**
 * Asynchronously subscribes Observers to this Observable on the specified {@link SchedulerLike}.
 *
 * With `subscribeOn` you can decide what type of scheduler a specific Observable will be using when it is subscribed to.
 *
 * Schedulers control the speed and order of emissions to observers from an Observable stream.
 *
 * ![](subscribeOn.png)
 *
 * ## Example
 * Given the following code:
 * ```javascript
 * import { of, merge } from 'rxjs';
 *
 * const a = of(1, 2, 3, 4);
 * const b = of(5, 6, 7, 8, 9);
 * merge(a, b).subscribe(console.log);
 * ```
 *
 * Both Observable `a` and `b` will emit their values directly and synchronously once they are subscribed to.
 * This will result in the output of `1 2 3 4 5 6 7 8 9`.
 *
 * But if we instead us the `subscribeOn` operator declaring that we want to use the {@link asyncScheduler} for values emited by Observable `a`:
 * ```javascript
 * import { of, merge, asyncScheduler } from 'rxjs';
 * import { subscribeOn } from 'rxjs/operators';
 *
 * const a = of(1, 2, 3, 4).pipe(subscribeOn(asyncScheduler));
 * const b = of(5, 6, 7, 8, 9);
 * merge(a, b).subscribe(console.log);
 * ```
 *
 * The output will instead be `5 6 7 8 9 1 2 3 4`.
 * The reason for this is that Observable `b` emits its values directly and synchronously like before
 * but the emissions from `a` are scheduled on the event loop because we are now using the {@link asyncScheduler} for that specific Observable.
 *
 * @param {SchedulerLike} scheduler - The {@link SchedulerLike} to perform subscription actions on.
 * @return {Observable<T>} The source Observable modified so that its subscriptions happen on the specified {@link SchedulerLike}.
 .
 * @method subscribeOn
 * @owner Observable
 */
export function subscribeOn<T>(scheduler: SchedulerLike, delay: number = 0): MonoTypeOperatorFunction<T> {
  return function subscribeOnOperatorFunction(source: Observable<T>): Observable<T> {
    return source.lift(new SubscribeOnOperator<T>(scheduler, delay));
  };
}

class SubscribeOnOperator<T> implements Operator<T, T> {
  constructor(private scheduler: SchedulerLike,
              private delay: number) {
  }
  call(subscriber: Subscriber<T>, source: any): TeardownLogic {
    return new SubscribeOnObservable<T>(
      source, this.delay, this.scheduler
    ).subscribe(subscriber);
  }
}

[-] toArray.ts [edit]
[-] window.ts [edit]
[-] retry.ts [edit]
[-] mergeAll.ts [edit]
[-] windowWhen.ts [edit]
[-] every.ts [edit]
[-] timeout.ts [edit]
[-] debounceTime.ts [edit]
[-] index.ts [edit]
[-] takeWhile.ts [edit]
[-] audit.ts [edit]
[-] reduce.ts [edit]
[-] mapTo.ts [edit]
[-] count.ts [edit]
[-] debounce.ts [edit]
[-] throwIfEmpty.ts [edit]
[-] auditTime.ts [edit]
[-] scan.ts [edit]
[-] switchAll.ts [edit]
[-] map.ts [edit]
[-] bufferCount.ts [edit]
[-] mergeScan.ts [edit]
[-] publish.ts [edit]
[-] min.ts [edit]
[+] ..
[-] publishReplay.ts [edit]
[-] bufferTime.ts [edit]
[-] share.ts [edit]
[-] repeat.ts [edit]
[-] distinct.ts [edit]
[-] concatMapTo.ts [edit]
[-] buffer.ts [edit]
[-] concatMap.ts [edit]
[-] max.ts [edit]
[-] partition.ts [edit]
[-] observeOn.ts [edit]
[-] bufferWhen.ts [edit]
[-] dematerialize.ts [edit]
[-] throttle.ts [edit]
[-] groupBy.ts [edit]
[-] withLatestFrom.ts [edit]
[-] exhaust.ts [edit]
[-] exhaustMap.ts [edit]
[-] retryWhen.ts [edit]
[-] zipAll.ts [edit]
[-] find.ts [edit]
[-] mergeMap.ts [edit]
[-] single.ts [edit]
[-] last.ts [edit]
[-] combineLatest.ts [edit]
[-] publishLast.ts [edit]
[-] pluck.ts [edit]
[-] pairwise.ts [edit]
[-] distinctUntilChanged.ts [edit]
[-] timeInterval.ts [edit]
[-] shareReplay.ts [edit]
[-] skipUntil.ts [edit]
[-] findIndex.ts [edit]
[-] windowToggle.ts [edit]
[-] startWith.ts [edit]
[-] timeoutWith.ts [edit]
[-] concat.ts [edit]
[-] materialize.ts [edit]
[-] timestamp.ts [edit]
[-] onErrorResumeNext.ts [edit]
[-] subscribeOn.ts [edit]
[-] takeUntil.ts [edit]
[-] skipLast.ts [edit]
[-] throttleTime.ts [edit]
[-] mergeMapTo.ts [edit]
[-] multicast.ts [edit]
[-] merge.ts [edit]
[-] takeLast.ts [edit]
[-] delayWhen.ts [edit]
[-] sampleTime.ts [edit]
[-] tap.ts [edit]
[-] take.ts [edit]
[-] sample.ts [edit]
[-] filter.ts [edit]
[-] skip.ts [edit]
[-] expand.ts [edit]
[-] publishBehavior.ts [edit]
[-] sequenceEqual.ts [edit]
[-] ignoreElements.ts [edit]
[-] catchError.ts [edit]
[-] endWith.ts [edit]
[-] refCount.ts [edit]
[-] windowCount.ts [edit]
[-] defaultIfEmpty.ts [edit]
[-] windowTime.ts [edit]
[-] switchMapTo.ts [edit]
[-] switchMap.ts [edit]
[-] delay.ts [edit]
[-] bufferToggle.ts [edit]
[-] repeatWhen.ts [edit]
[-] concatAll.ts [edit]
[-] first.ts [edit]
[-] zip.ts [edit]
[-] elementAt.ts [edit]
[-] skipWhile.ts [edit]
[-] race.ts [edit]
[-] finalize.ts [edit]
[-] combineAll.ts [edit]
[-] distinctUntilKeyChanged.ts [edit]
[-] isEmpty.ts [edit]