Created
April 26, 2019 17:40
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DebounceTime(0) is BAD
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// Write any JavaScript you want, just make sure that | |
// the last expression is an Rx.Observable | |
const { asapScheduler, animationFrameScheduler, asyncScheduler, queueScheduler, merge, EMPTY } = Rx; | |
const { map, debounceTime, startWith, filter } = RxOperators; | |
// New macro-task (long-running task) | |
const asyncScheduler$ = EMPTY.pipe( | |
startWith('async', asyncScheduler) | |
) | |
// (same micro-task) (short task, [in the current "tick"]) | |
const asapScheduler$ = EMPTY.pipe( | |
startWith('asap', asapScheduler) | |
); | |
// Used for (same macrotask [just after every other current work]) | |
const queueScheduler$ = EMPTY.pipe( | |
startWith('queue', queueScheduler) | |
); | |
// Used for (same macrotask that is Before repaint) | |
const animationFrameScheduler$ = EMPTY.pipe( | |
startWith('animationFrame', animationFrameScheduler) | |
); | |
// Used when value is iterable and not promiseLike, can produce many subtle 🐛 | |
const nullScheduler$ = EMPTY.pipe( | |
startWith('noScheduler', null) | |
); | |
merge(asyncScheduler$, asapScheduler$, queueScheduler$, animationFrameScheduler$, nullScheduler$).pipe( | |
debounceTime(0), | |
filter(x => !!x), | |
) |
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