writing-asyncawait.md-async-await.js

const run = async userId => {
  const [user, posts] = await Promise.all([
    getUser(userId),
    getPosts(userId),
  ]);

  const comments = await getComments(posts);
  return await parsePostsWithComments(user, posts, comments);
}

try {
  console.log('postsWithComments', run(userId);
} catch (err) {
  console.log('err', err);
}