If the minifier doesn't eliminate constant expressions (like Uglify does), with the way our flat bundles currently work you would ship two bundles.

We should warn prominently in this case, as you would effectively ship a double bundle to production.
'use strict';
if (process.env.NODE_ENV === 'production') {
  module.exports = require('./cjs/react.production.min.js');
} else {
  module.exports = require('./cjs/react.development.js');
}