https://nationaltrailraceway.com/core/misc/debounce.js?v=8.9.11

1/**
2* DO NOT EDIT THIS FILE.
3* See the following change record for more information,
4* https://www.drupal.org/node/2815083
5* @preserve
6**/
7
8Drupal.debounce = function (func, wait, immediate) {
9  var timeout = void 0;
10  var result = void 0;
11  return function () {
12    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
13      args[_key] = arguments[_key];
14    }
15
16    var context = this;
17    var later = function later() {
18      timeout = null;
19      if (!immediate) {
20        result = func.apply(context, args);
21      }
22    };
23    var callNow = immediate && !timeout;
24    clearTimeout(timeout);
25    timeout = setTimeout(later, wait);
26    if (callNow) {
27      result = func.apply(context, args);
28    }
29    return result;
30  };
31};