advanced patterns of Promises in Nested Async Functions with React 18
I'm writing unit tests and I've been struggling with this for a few days now and could really use some help... I'm working with an scenario with promises inside nested async functions when using React 18. I have a scenario where I chain multiple API calls, and I noticed that the results are not what I expected. The outer async function calls an API to get user data, then based on that data, it calls another API to fetch user posts. However, the data from the posts API appears to be outdated or sometimes even empty. Here's the relevant code snippet: ```javascript const fetchUserData = async (userId) => { const response = await fetch(`https://api.example.com/users/${userId}`); const user = await response.json(); return user; }; const fetchUserPosts = async (userId) => { const response = await fetch(`https://api.example.com/users/${userId}/posts`); const posts = await response.json(); return posts; }; const loadUserData = async (userId) => { const user = await fetchUserData(userId); const posts = await fetchUserPosts(user.id); console.log('User:', user); console.log('Posts:', posts); }; // In my component: useEffect(() => { loadUserData(1); }, []); ``` When I log `posts`, sometimes it returns an empty array or outdated posts, but the user data seems to be fetched correctly. I checked the API responses in Postman and they return the correct data. I'm using React 18 with hooks and I suspect it might be related to how I handle the state or the async functions. I've also tried wrapping the `loadUserData` call in a try/catch block, but it doesn't seem to throw any errors. Any insights on why this might be happening? Am I missing something in the async flow or state update mechanism? This is part of a larger CLI tool I'm building. Am I missing something obvious? I'm working on a service that needs to handle this. My development environment is macOS. Could this be a known issue?