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!
switch (bundleType) {
    case FB_WWW_DEV:
    case FB_WWW_PROD:
    case NODE_DEV:
    case NODE_PROD:
    case RN_FB_DEV:
    case RN_FB_PROD:
    case RN_OSS_DEV:
    case RN_OSS_PROD:
    case UMD_DEV:
    case UMD_PROD:
      return false;
    case FB_WWW_PROFILING:
    case NODE_PROFILING:
    case RN_FB_PROFILING:
    case RN_OSS_PROFILING:
      return true;
    default:
      throw new Error(`Unknown type: ${bundleType}`);
  }
}
function forbidFBJSImports() {