Clean dynamic Python/Java package-style pattern for JavaScript modules

main.js

// Example directory structure
// js/
//    package.js
//    package/
//        mod1.js
//        mod2.js
//        mod3.js
require(['package'], function(pack) {
    var obj1 = new pack.Mod1Class(),
        obj2 = new pack.Mod2Class();

    // ...
});

// loading individual modules still work
require(['package', 'package/mod3'], function(pack, mod3) {
    var obj1 = new pack.Mod1Class(),
        obj2 = new pack.Mod2Class(),
        obj3 = new mod3.Mod3Class();

    // ...
});

package.coffee

# using underscore and coffeescript's splats
define ['underscore', 'package/mod1', 'package/mod2', 'package/mod3'], (_, modules...) ->
    return _.extend {}, modules...

package.js

// pure javascript
define(['package/mod1', 'package/mod2', 'package/mod3'], function() {
    var i, key, module, pack = {};
    for (i = arguments.length; i--;) {
        module = arguments[i];
        for (key in module) {
            pack[key] = module[key];
        }
    }
    return pack;
});