43 lines
2.0 KiB
TypeScript
43 lines
2.0 KiB
TypeScript
import { Observable, SubscribableOrPromise } from '../Observable';
|
|
/**
|
|
* 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>
|
|
*
|
|
* <img src="./img/audit.png" width="100%">
|
|
*
|
|
* `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 <caption>Emit clicks at a rate of at most one click per second</caption>
|
|
* var clicks = Rx.Observable.fromEvent(document, 'click');
|
|
* var result = clicks.audit(ev => Rx.Observable.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 declare function audit<T>(this: Observable<T>, durationSelector: (value: T) => SubscribableOrPromise<any>): Observable<T>;
|