The 16.5.0 package released to unpkg currently has the production/profiling variant present for cjs builds but there is no equivalent for umd builds. 

i.e. There is the file https://unpkg.com/react@16.5.0/cjs/react.profiling.min.js but there is no https://unpkg.com/react@16.5.0/umd/react.profiling.min.js

It would be great if a future release had the profiling variant packaged as umd as well.

Also thanks for the awesome framework!
bundleTypes: [
      UMD_DEV,
      UMD_PROD,
      NODE_DEV,
      NODE_PROD,
      NODE_PROFILING,
      FB_WWW_DEV,
      FB_WWW_PROD,
      FB_WWW_PROFILING,
    ],
    moduleType: ISOMORPHIC,
    entry: 'react',
    global: 'React',
    externals: [],
  },
  
  {
    label: 'dom-client',
    bundleTypes: [
      UMD_DEV,
      UMD_PROD,
      NODE_DEV,
      NODE_PROD,
      NODE_PROFILING,
      FB_WWW_DEV,
      FB_WWW_PROD,
      FB_WWW_PROFILING,
    ],
    moduleType: RENDERER,
    entry: 'react-dom',