Simple map function for JS objects.

object-map.js

/*
Use like 
{key: "value"}.map((object, key) => { console.log(key) })
*/
if (typeof Object.prototype.map != 'function') {
  Object.prototype.map = function(callback) {
    'use strict';
    if (this == null) {
      throw new TypeError('Cannot convert undefined or null to object');
    }

    var target = Object(this);

    return Object.keys(target).map(callback.bind(this, target));
  };
}