Hooks like `useEffect` or `useLayoutEffect` will _never_ have names, so if a the only hooks for a given source file are these "unnamed" built-in hooks, we should skip loading the source code.
if (typeof atob === 'function') {
    return atob(encoded);
  } else if (
    typeof Buffer !== 'undefined' &&
    Buffer !== null &&
    typeof Buffer.from === 'function'
  ) {
    return Buffer.from(encoded, 'base64');
  } else {
    throw Error('Cannot decode base64 string');
  }
}
function extractAndLoadSourceMaps(
  locationKeyToHookSourceData: Map<string, HookSourceData>,
): Promise<*> {
  
  
  
  if (!__TEST__) {
    if (__DEBUG__) {