RequireJS with non-AMD modules

requireNonAMD.js

// 1. Add definition to foot of module.js (the required file)

// AMD Define
define(function(){
    return baron;
});

// 2. Add the path to main.js (requireJS config) as normal
require.config({
  baseUrl: "/sites/all/themes/base/js/",
  paths: {
    "underscore": "../vendor/underscore-min",
    "baron": "../vendor/baron"
  },
  shim: {
    underscore: {
      exports: "_"
    }
  }
});

// 3. Require the file in app.js
define(["underscore", "../vendor/baron"], function(_, Baron) {
// use non-AMD module here
});