UMD wrapper

umd.js

// https://toddmotto.com/what-function-window-document-undefined-iife-really-means/
(function (root, factory) {
  if (typeof define === 'function' && define.amd) {
    define(factory);
  } else if (typeof exports === 'object') {
    module.exports = factory;
  } else {
    root.MYMODULE = factory();
  }
})(this, function () {
  // code
});