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53 lines
1.4 KiB
53 lines
1.4 KiB
4 years ago
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import { AsyncScheduler } from './AsyncScheduler';
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/**
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*
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* Async Scheduler
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*
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* <span class="informal">Schedule task as if you used setTimeout(task, duration)</span>
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*
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* `async` scheduler schedules tasks asynchronously, by putting them on the JavaScript
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* event loop queue. It is best used to delay tasks in time or to schedule tasks repeating
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* in intervals.
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*
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* If you just want to "defer" task, that is to perform it right after currently
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* executing synchronous code ends (commonly achieved by `setTimeout(deferredTask, 0)`),
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* better choice will be the {@link asapScheduler} scheduler.
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*
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* ## Examples
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* Use async scheduler to delay task
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* ```ts
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* import { asyncScheduler } from 'rxjs';
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*
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* const task = () => console.log('it works!');
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*
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* asyncScheduler.schedule(task, 2000);
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*
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* // After 2 seconds logs:
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* // "it works!"
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* ```
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*
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* Use async scheduler to repeat task in intervals
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* ```ts
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* import { asyncScheduler } from 'rxjs';
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*
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* function task(state) {
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* console.log(state);
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* this.schedule(state + 1, 1000); // `this` references currently executing Action,
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* // which we reschedule with new state and delay
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* }
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*
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* asyncScheduler.schedule(task, 3000, 0);
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*
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* // Logs:
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* // 0 after 3s
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* // 1 after 4s
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* // 2 after 5s
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* // 3 after 6s
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* ```
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*
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* @static true
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* @name async
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* @owner Scheduler
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*/
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export declare const async: AsyncScheduler;
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