Requiring global properties like CommonJS modules

gistfile1.js

(function() {
  var modules = {};

  var require = function(name) {
    var globals = Object.keys(window);

    if (Object.keys(modules).length !== globals.length) {
      globals.forEach(function(item) {
        if (!Object.hasOwnProperty.call(modules, item)) {
          modules[item] = window[item];
        }
      });

      
    }
    return modules[name];
  };

  window.require = require;
})();