Not sure what’s up yet but putting this up so I don’t forget to check it later.
In the past, I could put this into Webpack config:

``` js
    resolve: {
        alias: {
            react: 'react/dist/react',
            'react-dom': 'react-dom/dist/react-dom',
        },
      }
```

Many people do that to improve build times.

This works with 0.14.x and 15.3.0 but not in master.
Most likely related to recent @sebmarkbage changes.

It fails like this:

<img width="760" alt="screen shot 2016-08-12 at 14 55 55" src="https://cloud.githubusercontent.com/assets/810438/17624533/e8b7c366-609c-11e6-8fe6-9adb951f12a8.png">

Seems like it claims to be a UMD shim but assumes global environment (whereas a true UMD shim would detect environment and fallback to `require` when available).

cc @zpao 

standalone: 'React',
  
  globalTransforms: [envifyDev],
  plugins: [collapser],
  after: [derequire, simpleBannerify],
};
var min = {
  entries: [
    './build/node_modules/react/lib/ReactUMDEntry.js',
  ],
  outfile: './build/react.min.js',
  debug: false,
  standalone: 'React',
  
  
  transforms: [envifyProd, uglifyify],
  globalTransforms: [envifyProd],
  plugins: [collapser],
  
  
  after: [minify, bannerify],
};
var addons = {
  entries: [
    './build/node_modules/react/lib/ReactWithAddonsUMDEntry.js',
  ],
  outfile: './build/react-with-addons.js',
  debug: false,
  standalone: 'React',
  packageName: 'React (with addons)',