| import { debounce as higherOrder } from '../operators/debounce'; |
| /** |
| * Emits a value from the source Observable only after a particular time span |
| * determined by another Observable has passed without another source emission. |
| * |
| * <span class="informal">It's like {@link debounceTime}, but the time span of |
| * emission silence is determined by a second Observable.</span> |
| * |
| * <img src="./img/debounce.png" width="100%"> |
| * |
| * `debounce` delays values emitted by the source Observable, but drops previous |
| * pending delayed emissions if a new value arrives on the source Observable. |
| * This operator keeps track of the most recent value from the source |
| * Observable, and spawns a duration Observable by calling the |
| * `durationSelector` function. The value is emitted only when the duration |
| * Observable emits a value or completes, and if no other value was emitted on |
| * the source Observable since the duration Observable was spawned. If a new |
| * value appears before the duration Observable emits, the previous value will |
| * be dropped and will not be emitted on the output Observable. |
| * |
| * Like {@link debounceTime}, this is a rate-limiting operator, and also a |
| * delay-like operator since output emissions do not necessarily occur at the |
| * same time as they did on the source Observable. |
| * |
| * @example <caption>Emit the most recent click after a burst of clicks</caption> |
| * var clicks = Rx.Observable.fromEvent(document, 'click'); |
| * var result = clicks.debounce(() => Rx.Observable.interval(1000)); |
| * result.subscribe(x => console.log(x)); |
| * |
| * @see {@link audit} |
| * @see {@link debounceTime} |
| * @see {@link delayWhen} |
| * @see {@link throttle} |
| * |
| * @param {function(value: T): SubscribableOrPromise} durationSelector A function |
| * that receives a value from the source Observable, for computing the timeout |
| * duration for each source value, returned as an Observable or a Promise. |
| * @return {Observable} An Observable that delays the emissions of the source |
| * Observable by the specified duration Observable returned by |
| * `durationSelector`, and may drop some values if they occur too frequently. |
| * @method debounce |
| * @owner Observable |
| */ |
| export function debounce(durationSelector) { |
| return higherOrder(durationSelector)(this); |
| } |
| //# sourceMappingURL=debounce.js.map |
