Require.js, nodejs and vanilla module definition (jQuery like).

module.js

;(function (window, undefined) { // undefined as an undefined parameter
    'use strict';
    
    var Module = null; // module definition here
    
    if (typeof module === "object" && module && typeof module.exports === "object") {
        module.exports = Module; // commonjs module (ndoejs...)
    } else if (typeof define === "function" && define.amd) {
        define([], function () {return Module;}); // amd module (requirejs...)
    } else if (typeof window === "object" && typeof window.document === "object") {
        window.Module = Module; // Browser global namespace
    }

})(window);