async_await_all.js

async function publishPipeline(post){
  if (!validate(post)){
    return { post, status: "failed" };
  }
  try {
    await publish(post)
    return { post, status: "published" };
  } catch (e) {
    return { post, status: "failed", error: e };
  }
}

async function publishAll() {
  const posts = await getPosts();
  const publishTasks = posts.map(publishPipeline);
  const results = await Promise.all(publishTasks);
  const successes = results.filter(post => post.status === "published");
  const failures = results.filter(post => post.status === "failed");
  return {
    successes,
    failures
  };
}