DebounceTime(0) is BAD

debounceTimeJustWhy.ts

// 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),
)