arrayEventListener.js

'use strict';
const arrayProto = Array.prototype;
const arrayMethods = Object.create(arrayProto);

const newArrProto = [];


['push','pop','shift','unshift','splice','sort','reverse'].forEach(function (method) {
	let original = arrayMethods[method];
	
	newArrProto[method] = function mutator() {
			console.log('listener working!');
			
			return original.apply(this,arguments);
	}
})

let list = [1,2];
list.__proto__ = newArrProto;
list.push(3);

let list2 = [1,2];

list2.push(3);