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                var counter = 1;

function printMessage() {
  console.log(`message ${counter++}`);

var schedule = Scheduler(/* debounceMinimum = */50,/* throttleMaximum = */500);

// try to schedule a message to be printed (after approx 50ms of debounce)

setTimeout(function waitAWhile(){
    // try to schedule next message to be printed (after approx 50ms of debounce)

  // but now keep flooding the scheduling, so it keeps debouncing, up to the 500ms max throttling
  var intv = setInterval(function(){ schedule(printMessage); },30);
  // stop the madness, after about 10 seconds!
  setTimeout(function(){ clearInterval(intv); },10*1000);

// "message 1" (printed after about 50ms)

// (waiting about 3.5 seconds)

// "message 2"
// "message 3"  (after another 500ms)
// "message 4"  (after another 500ms)
// ..

// ***********************

function Scheduler(debounceMin,throttleMax) {
	var entries = new WeakMap();

	return schedule;

	// ***********************

	function schedule(fn) {
		var entry;

		if (entries.has(fn)) {
			entry = entries.get(fn);
		else {
			entry = {
				last: 0,
				timer: null,

		var now =;

		if (!entry.timer) {
			entry.last = now;

		if (
			// no timer running yet?
			entry.timer == null ||
			// room left to debounce while still under the throttle-max?
			(now - entry.last) < throttleMax
		) {
			if (entry.timer) {

			let time = Math.min(debounceMin,Math.max(0,(entry.last + throttleMax) - now));
			entry.timer = setTimeout(run,time,fn,entry);

	function run(fn,entry) {
		entry.timer = null;
		entry.last =;