const Lamp = (function() { return function meCoolLamp() { meCoolLamp.prototype.turnOn = function() { console.log('Lamp is On!')} meCoolLamp.prototype.turnOff = function() { console.log('Lamp is Off!')} };})() const myCoolLamp = new Lamp(); var startDate = new Date(2017, 3, 19, 15, 00); var now = new Date(); if (now > startDate) { myCoolLamp.turnOn(); } else { myCoolLamp.turnOff(); }