umd

gistfile1.txt

(function (root, factory) {

  if (typeof define === 'function' && define.amd) {
    // AMD
    define(['underscore'], factory);
  } else if (typeof exports === 'object') {
    // Node, CommonJS-like
    module.exports = factory(require('underscore'));
  } else {
    // Browser globals (root is window)
    root._ = factory(root._);
  }

}(this, function (_) {
 ...
 return {};
}));