unicorn/no-await-expression-member

(await getUser(id)).name needs parentheses, and they're easy to forget. Without them, await getUser(id).name reads name from the promise and gives you undefined. If you destructure, or put the awaited value in a variable, you don't need parentheses and the code reads from left to right.

--fix-dangerously rewrites const name = (await getUser(id)).name and const first = (await getPosts(id))[0] to destructuring. You need to rewrite other forms by hand.

Configure

Off by default. To turn it on:

[lint.rules]
"unicorn/no-await-expression-member" = "error" # or "warn"

Examples

Reported:

async function show(id) {
  const name = (await getUser(id)).name;
  const first = (await getPosts(id))[0];
  render(name, first);
}

async function load(url) {
  return (await fetch(url)).json();
}

Not reported:

async function show(id) {
  const { name } = await getUser(id);
  const [first] = await getPosts(id);
  render(name, first);
}

async function load(url) {
  const response = await fetch(url);
  return response.json();
}