promises.js

const writeJoke = async (joke, path) => {
  const filehandle = await fs.open(path, 'w');
  try {
    return await filehandle.write(joke);
  } finally {
    await filehandle.close();
  }
};
(async () => {
  const [j1, j2] = await gfunction();
  const results = await Promise.all([
    writeJoke(j1, './joke1'),
    writeJoke(j2, './joke2'),
  ]);
  console.log(results);
})()
  .catch(e => console.error(`Unexpected exception ${e.message}`));