Generic Event Debouncer (f.e. for resize event)

Debouncer.js

"use strict";

function Debouncer() {
  var deb_record = {
    exists: false,
    fn: null,
    delay: 0,
    registered: 0,
    invoke: false,
    handler: null
  };
  
  return {
    reset: function() {
      if(deb_record.exists !== false) {
        try {
          deb_record.handler = null;
          deb_record.fn = null;
        } catch (e) {
          // pass
        }
        deb_record.exists = false;
      }
    },
  
    fire: function(fn, debounce_delay = 100) {
      if(deb_record.exists !== false) {
        if(deb_record.invoke) {
          deb_record.registered = new Date();
        }
        return;
      }

      deb_record.exists = true;
      deb_record.fn = fn;
      deb_record.delay = debounce_delay;
      deb_record.registered = new Date();
      deb_record.invoke = true;
      
      function handler() {
      	if((new Date() - deb_record.registered) < deb_record.delay) {
          setTimeout(handler, deb_record.delay);
        } else {
          deb_record.invoke = false;
          fn();
        }
      };
      
      deb_record.handler = handler;
      setTimeout(handler, deb_record.delay);
    },
    
    refire: function(fn, debounce_delay = 100) {
      var _reset = this.reset;
      this.fire(function() {
        fn();
        _reset();
      }, debounce_delay);
    }
  };
};

// testing
$(document).ready(function() {
  var debouncer = new Debouncer();
  $(window).resize(function(event) {
    debouncer.refire(function(){
      console.log("debounced event fired");
    }, 200);
  });	
});