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!
return [`build/facebook-www/${filename}`];
    case RN_OSS_DEV:
    case RN_OSS_PROD:
    case RN_OSS_PROFILING:
      switch (packageName) {
        case 'react-native-renderer':
          return [`build/react-native/oss/${filename}`];
        default:
          throw new Error('Unknown RN package.');
      }
    case RN_FB_DEV:
    case RN_FB_PROD:
    case RN_FB_PROFILING:
      switch (packageName) {
        case 'react-native-renderer':
          return [`build/react-native/fb/${filename}`];
        default:
          throw new Error('Unknown RN package.');
      }
    default:
      throw new Error('Unknown bundle type.');
  }
}
async function copyWWWShims() {
  await asyncCopyTo(
    `${__dirname}/shims/facebook-www`,
    'build/facebook-www/shims'
  );
}
async function copyRNShims() {