yairEO

var events = (function(){
    function addRemove(op, events, cb){
        if( cb )
            events.split(' ').forEach(name => {
                var ev = name.split('.')[0]
                cb = cb || this._eventsNS[name]

                this[op + 'EventListener'].call(this, ev, cb)

                if(op == 'add')   

devbyray

var domIsReady = (function(domIsReady) {  
  var isBrowserIeOrNot = function() {
    return (!document.attachEvent || typeof document.attachEvent === "undefined" ? 'not-ie' : 'ie');
  }
  
  domIsReady = function(callback) {
    if(callback && typeof callback === 'function'){
      if(isBrowserIeOrNot() !== 'ie') {
        document.addEventListener("DOMContentLoaded", function() {
          return callback();