work.suroh.tk/node_modules/rxjs/_esm5/scheduler/asap.js

40 lines
1.7 KiB
JavaScript

/** PURE_IMPORTS_START ._AsapAction,._AsapScheduler PURE_IMPORTS_END */
import { AsapAction } from './AsapAction';
import { AsapScheduler } from './AsapScheduler';
/**
*
* Asap Scheduler
*
* <span class="informal">Perform task as fast as it can be performed asynchronously</span>
*
* `asap` scheduler behaves the same as {@link async} scheduler when you use it to delay task
* in time. If however you set delay to `0`, `asap` will wait for current synchronously executing
* code to end and then it will try to execute given task as fast as possible.
*
* `asap` scheduler will do its best to minimize time between end of currently executing code
* and start of scheduled task. This makes it best candidate for performing so called "deferring".
* Traditionally this was achieved by calling `setTimeout(deferredTask, 0)`, but that technique involves
* some (although minimal) unwanted delay.
*
* Note that using `asap` scheduler does not necessarily mean that your task will be first to process
* after currently executing code. In particular, if some task was also scheduled with `asap` before,
* that task will execute first. That being said, if you need to schedule task asynchronously, but
* as soon as possible, `asap` scheduler is your best bet.
*
* @example <caption>Compare async and asap scheduler</caption>
*
* Rx.Scheduler.async.schedule(() => console.log('async')); // scheduling 'async' first...
* Rx.Scheduler.asap.schedule(() => console.log('asap'));
*
* // Logs:
* // "asap"
* // "async"
* // ... but 'asap' goes first!
*
* @static true
* @name asap
* @owner Scheduler
*/
export var asap = /*@__PURE__*/ new AsapScheduler(AsapAction);
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