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]; module.prototype = new ExtensibleObject({ factory: this, notificationCenter: this.notificationCenter }); return new (module.bind.apply(module, arguments))(); } function ExtensibleObject(properties) { for(var propertyName in properties) { this[propertyName] = properties[propertyName]; } } 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").notificationCenter.alert("foo"); /* Lala:chuck.js jeena$ node Factory.js foo */