function Factory() { this.notificationCenter = new NotificationCenter(); } Factory.prototype.new = function () { if (arguments.length < 1) throw 'Too fiew arguments'; if (typeof arguments[0] != 'function') throw arguments[0] + ' is not a function'; var module = arguments[0]; var o = Object.create(module.prototype, { factory: {value: this}, notificationCenter: {value: this.notificationCenter} }); return new (o.call(arguments))(); } function Player(name) { this.name = name; } function NotificationCenter() { this.foo = "a" } NotificationCenter.prototype.alert = function(a) { console.log(a) } var factory = new Factory(); var player = factory.new(Player, "jeena"); player.factory.new(Player, "logsol").name; /* Lala:chuck.js jeena$ node Factory.js foo */