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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 { Subscription } from '../Subscription';
import { MonoTypeOperatorFunction, SubscribableOrPromise, TeardownLogic } from '../types';

import { OuterSubscriber } from '../OuterSubscriber';
import { subscribeToResult } from '../util/subscribeToResult';

/**
 * Ignores source values for a duration determined by another Observable, then
 * emits the most recent value from the source Observable, then repeats this
 * process.
 *
 * <span class="informal">It's like {@link auditTime}, but the silencing
 * duration is determined by a second Observable.</span>
 *
 * ![](audit.png)
 *
 * `audit` is similar to `throttle`, but emits the last value from the silenced
 * time window, instead of the first value. `audit` emits the most recent value
 * from the source Observable on the output Observable as soon as its internal
 * timer becomes disabled, and ignores source values while the timer is enabled.
 * Initially, the timer is disabled. As soon as the first source value arrives,
 * the timer is enabled by calling the `durationSelector` function with the
 * source value, which returns the "duration" Observable. When the duration
 * Observable emits a value or completes, the timer is disabled, then the most
 * recent source value is emitted on the output Observable, and this process
 * repeats for the next source value.
 *
 * ## Example
 *
 * Emit clicks at a rate of at most one click per second
 * ```ts
 * import { fromEvent, interval } from 'rxjs';
 * import { audit } from 'rxjs/operators'
 *
 * const clicks = fromEvent(document, 'click');
 * const result = clicks.pipe(audit(ev => interval(1000)));
 * result.subscribe(x => console.log(x));
 * ```
 * @see {@link auditTime}
 * @see {@link debounce}
 * @see {@link delayWhen}
 * @see {@link sample}
 * @see {@link throttle}
 *
 * @param {function(value: T): SubscribableOrPromise} durationSelector A function
 * that receives a value from the source Observable, for computing the silencing
 * duration, returned as an Observable or a Promise.
 * @return {Observable<T>} An Observable that performs rate-limiting of
 * emissions from the source Observable.
 * @method audit
 * @owner Observable
 */
export function audit<T>(durationSelector: (value: T) => SubscribableOrPromise<any>): MonoTypeOperatorFunction<T> {
  return function auditOperatorFunction(source: Observable<T>) {
    return source.lift(new AuditOperator(durationSelector));
  };
}

class AuditOperator<T> implements Operator<T, T> {
  constructor(private durationSelector: (value: T) => SubscribableOrPromise<any>) {
  }

call(subscriber: Subscriber<T>, source: any): TeardownLogic {
    return source.subscribe(new AuditSubscriber<T, T>(subscriber, this.durationSelector));
  }
}

/**
 * We need this JSDoc comment for affecting ESDoc.
 * @ignore
 * @extends {Ignored}
 */
class AuditSubscriber<T, R> extends OuterSubscriber<T, R> {

private value: T;
  private hasValue: boolean = false;
  private throttled: Subscription;

constructor(destination: Subscriber<T>,
              private durationSelector: (value: T) => SubscribableOrPromise<any>) {
    super(destination);
  }

protected _next(value: T): void {
    this.value = value;
    this.hasValue = true;
    if (!this.throttled) {
      let duration;
      try {
        const { durationSelector } = this;
        duration = durationSelector(value);
      } catch (err) {
        return this.destination.error(err);
      }
      const innerSubscription = subscribeToResult(this, duration);
      if (!innerSubscription || innerSubscription.closed) {
        this.clearThrottle();
      } else {
        this.add(this.throttled = innerSubscription);
      }
    }
  }

clearThrottle() {
    const { value, hasValue, throttled } = this;
    if (throttled) {
      this.remove(throttled);
      this.throttled = null;
      throttled.unsubscribe();
    }
    if (hasValue) {
      this.value = null;
      this.hasValue = false;
      this.destination.next(value);
    }
  }

notifyNext(outerValue: T, innerValue: R, outerIndex: number, innerIndex: number): void {
    this.clearThrottle();
  }

notifyComplete(): void {
    this.clearThrottle();
  }
}

[-] 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]