Function fsync

lib/internal/fs/promises.js:1581–1587

(handle)

}

async function fsync(handle) {
  return await PromisePrototypeThen(
    binding.fsync(handle.fd, kUsePromises),
    undefined,
    handleErrorFromBinding,
  );
}

async function mkdir(path, options) {
  const h = vfsState.handlers;