Vanilla JS throttle, vanilla JS debounce

debounce.js

// https://vanillajstoolkit.com/helpers/debounce/

var debounce = function (fn) {
	// Setup a timer
	var timeout;

	// Return a function to run debounced
	return function () {

		// Setup the arguments
		var context = this;
		var args = arguments;

		// If there's a timer, cancel it
		if (timeout) {
			window.cancelAnimationFrame(timeout);
		}

		// Setup the new requestAnimationFrame()
		timeout = window.requestAnimationFrame(function () {
			fn.apply(context, args);
		});
	}
};

throttle.js

// doing this to show/hide the tooltips based on mobile size.
function throttle(func, alternateFunc, minimumInterval) {
  var executeImmediately = true, freshEvt = null;
  return function (Evt) {
    if (executeImmediately) { // Execute immediately
      executeImmediately = false;
      setTimeout(function (f) { // handle further calls
        executeImmediately = true;
        if (freshEvt !== null) func(freshEvt);
        freshEvt = null;
      }, minimumInterval);
      return func(Evt);
    } else { // Delayed execute
      freshEvt = Evt;
      if (typeof alternateFunc === "function") alternateFunc(Evt);
    }
  };
}