js module definition

myclass.js

// UMD (Universal Module Definition)
(function(global, factory, name) {
if (typeof define === 'function' && define.amd) { define([], factory); /* AMD*/ }
else if (typeof exports === 'object') { module.exports = factory(); /* CommonJS */ }
else { global[name] = factory(); /* Global*/ }
})(this, function() {
    'use strict';

    var MyClass = {
        hoge: function () {
            console.log('test');
        }
    }
    return MyClass;
}, "MyClass");

使うときは、
var MyClass = MyClass || require('./myclass');
MyClass.hoge();