[6a3a178] | 1 | import { AsyncAction } from './AsyncAction';
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| 2 | import { AsyncScheduler } from './AsyncScheduler';
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| 3 |
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| 4 | /**
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| 5 | *
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| 6 | * Async Scheduler
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| 7 | *
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| 8 | * <span class="informal">Schedule task as if you used setTimeout(task, duration)</span>
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| 9 | *
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| 10 | * `async` scheduler schedules tasks asynchronously, by putting them on the JavaScript
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| 11 | * event loop queue. It is best used to delay tasks in time or to schedule tasks repeating
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| 12 | * in intervals.
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| 13 | *
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| 14 | * If you just want to "defer" task, that is to perform it right after currently
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| 15 | * executing synchronous code ends (commonly achieved by `setTimeout(deferredTask, 0)`),
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| 16 | * better choice will be the {@link asapScheduler} scheduler.
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| 17 | *
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| 18 | * ## Examples
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| 19 | * Use async scheduler to delay task
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| 20 | * ```ts
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| 21 | * import { asyncScheduler } from 'rxjs';
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| 22 | *
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| 23 | * const task = () => console.log('it works!');
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| 24 | *
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| 25 | * asyncScheduler.schedule(task, 2000);
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| 26 | *
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| 27 | * // After 2 seconds logs:
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| 28 | * // "it works!"
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| 29 | * ```
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| 30 | *
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| 31 | * Use async scheduler to repeat task in intervals
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| 32 | * ```ts
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| 33 | * import { asyncScheduler } from 'rxjs';
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| 34 | *
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| 35 | * function task(state) {
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| 36 | * console.log(state);
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| 37 | * this.schedule(state + 1, 1000); // `this` references currently executing Action,
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| 38 | * // which we reschedule with new state and delay
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| 39 | * }
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| 40 | *
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| 41 | * asyncScheduler.schedule(task, 3000, 0);
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| 42 | *
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| 43 | * // Logs:
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| 44 | * // 0 after 3s
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| 45 | * // 1 after 4s
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| 46 | * // 2 after 5s
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| 47 | * // 3 after 6s
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| 48 | * ```
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| 49 | */
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| 50 | export const asyncScheduler = new AsyncScheduler(AsyncAction);
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| 51 |
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| 52 | /**
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| 53 | * @deprecated renamed. Use {@link asyncScheduler}
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| 54 | */
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| 55 | export const async = asyncScheduler; |
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