handy addEventListener wrapper

ael.js

function ael(dest, type, fn, ops){
   let ret={ dest, type, fn, ops, elm: dest };

   if(typeof dest === "string"){
      ret.elm = document;
      ret.fn = function(e){ if(e.target.matches(dest)) return ret.fn.call(this, e, ret); };
   }

   ret.remove = x=>ret.elm.removeEventListener(ret.elm, type, ret.fn, ops);
   ret.add = ael.bind(this, dest);
   ret.elm.addEventListener(type, ret.fn, ops);
 return ret;
}