work.suroh.tk/node_modules/rxjs/operator/delay.d.ts

43 lines
1.9 KiB
TypeScript

import { IScheduler } from '../Scheduler';
import { Observable } from '../Observable';
/**
* Delays the emission of items from the source Observable by a given timeout or
* until a given Date.
*
* <span class="informal">Time shifts each item by some specified amount of
* milliseconds.</span>
*
* <img src="./img/delay.png" width="100%">
*
* If the delay argument is a Number, this operator time shifts the source
* Observable by that amount of time expressed in milliseconds. The relative
* time intervals between the values are preserved.
*
* If the delay argument is a Date, this operator time shifts the start of the
* Observable execution until the given date occurs.
*
* @example <caption>Delay each click by one second</caption>
* var clicks = Rx.Observable.fromEvent(document, 'click');
* var delayedClicks = clicks.delay(1000); // each click emitted after 1 second
* delayedClicks.subscribe(x => console.log(x));
*
* @example <caption>Delay all clicks until a future date happens</caption>
* var clicks = Rx.Observable.fromEvent(document, 'click');
* var date = new Date('March 15, 2050 12:00:00'); // in the future
* var delayedClicks = clicks.delay(date); // click emitted only after that date
* delayedClicks.subscribe(x => console.log(x));
*
* @see {@link debounceTime}
* @see {@link delayWhen}
*
* @param {number|Date} delay The delay duration in milliseconds (a `number`) or
* a `Date` until which the emission of the source items is delayed.
* @param {Scheduler} [scheduler=async] The IScheduler to use for
* managing the timers that handle the time-shift for each item.
* @return {Observable} An Observable that delays the emissions of the source
* Observable by the specified timeout or Date.
* @method delay
* @owner Observable
*/
export declare function delay<T>(this: Observable<T>, delay: number | Date, scheduler?: IScheduler): Observable<T>;