Standalone version looks for ReactDOM common.js module.

[bencooling]

React is handled correctly, but not ReactDOM.

Source Code

// line 9545 Looks for stand-alone version of React
var React = (typeof window !== "undefined" ? window['React'] : typeof global !== "undefined" ? global['React'] : null);

// line 9546 Looks for commonjs module of ReactDOM
var ReactDOM = require('react-dom');