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!
if (name.indexOf('/') !== -1) {
    return name.split('/')[0];
  }
  return name;
}
function getBundleOutputPaths(bundleType, filename, packageName) {
  switch (bundleType) {
    case NODE_DEV:
    case NODE_PROD:
    case NODE_PROFILING:
      return [`build/node_modules/${packageName}/cjs/${filename}`];
    case UMD_DEV:
    case UMD_PROD:
      return [
        `build/node_modules/${packageName}/umd/${filename}`,
        `build/dist/${filename}`,
      ];
    case FB_WWW_DEV:
    case FB_WWW_PROD:
    case FB_WWW_PROFILING: