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- import { MonoTypeOperatorFunction, ObservableInput } from '../types';
- /**
- * An object interface used by {@link throttle} or {@link throttleTime} that ensure
- * configuration options of these operators.
- *
- * @see {@link throttle}
- * @see {@link throttleTime}
- */
- export interface ThrottleConfig {
- /**
- * If `true`, the resulting Observable will emit the first value from the source
- * Observable at the **start** of the "throttling" process (when starting an
- * internal timer that prevents other emissions from the source to pass through).
- * If `false`, it will not emit the first value from the source Observable at the
- * start of the "throttling" process.
- *
- * If not provided, defaults to: `true`.
- */
- leading?: boolean;
- /**
- * If `true`, the resulting Observable will emit the last value from the source
- * Observable at the **end** of the "throttling" process (when ending an internal
- * timer that prevents other emissions from the source to pass through).
- * If `false`, it will not emit the last value from the source Observable at the
- * end of the "throttling" process.
- *
- * If not provided, defaults to: `false`.
- */
- trailing?: boolean;
- }
- /**
- * Emits a value from the source Observable, then ignores subsequent source
- * values for a duration determined by another Observable, then repeats this
- * process.
- *
- * <span class="informal">It's like {@link throttleTime}, but the silencing
- * duration is determined by a second Observable.</span>
- *
- * 
- *
- * `throttle` emits the source Observable values on the output Observable
- * when its internal timer is disabled, and ignores source values when the timer
- * is enabled. Initially, the timer is disabled. As soon as the first source
- * value arrives, it is forwarded to the output Observable, and then 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, the timer is disabled, 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, throttle, interval } from 'rxjs';
- *
- * const clicks = fromEvent(document, 'click');
- * const result = clicks.pipe(throttle(() => interval(1000)));
- *
- * result.subscribe(x => console.log(x));
- * ```
- *
- * @see {@link audit}
- * @see {@link debounce}
- * @see {@link delayWhen}
- * @see {@link sample}
- * @see {@link throttleTime}
- *
- * @param durationSelector A function that receives a value from the source
- * Observable, for computing the silencing duration for each source value,
- * returned as an `ObservableInput`.
- * @param config A configuration object to define `leading` and `trailing`
- * behavior. Defaults to `{ leading: true, trailing: false }`.
- * @return A function that returns an Observable that performs the throttle
- * operation to limit the rate of emissions from the source.
- */
- export declare function throttle<T>(durationSelector: (value: T) => ObservableInput<any>, config?: ThrottleConfig): MonoTypeOperatorFunction<T>;
- //# sourceMappingURL=throttle.d.ts.map
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