Universal JavaScript Module, supports AMD (RequireJS), Node.js, and the browser.

universal-module.js

/*jslint plusplus: true */
/*global define: false, require: false, module: false, exports: false */
(function (root, name, deps, factory) {
    "use strict";
    if (typeof exports === 'object') {
        // Node. Does not work with strict CommonJS, but
        // only CommonJS-like enviroments that support module.exports,
        // like Node.
        module.exports = factory.apply(root, deps.map(require));
    } else if (typeof define === 'function' && define.amd) {
        // Registering as an unnamed module, more flexible and match CommonJS
        define(deps, factory);
    } else {
        // Browser globals
        var d, i = 0, global = root, old = global[name], mod;
        while((d = deps[i]) !== undefined) {
            deps[i] = root[d];
            i++;
        }
        global[name] = mod = factory.apply(global, deps);
        mod.noConflict = function(){
            global[name] = old;
            return mod;
        };
    }
}(this, "myModule", ['someDependency', 'somethingElse'], function (someDependency, somethingElse) {
    "use strict";

    return {

    };
}));

usage.js

// AMD
require(['myModule'], function (myModule){
  // use myModule here
});

// Node.js
var myModule = require('myModule');

// Global
myModule
// if myModule is already defined, `noConflict` gives it back
var myNonConflictingModule = myModule.noConflict();