Handling async/await with nested Promises in Node.js causing advanced patterns
I've searched everywhere and can't find a clear answer. After trying multiple solutions online, I still can't figure this out. I am experiencing an scenario with handling nested Promises in my Node.js application using async/await. I have the following function that is supposed to fetch user data and then fetch their related posts: ```javascript const fetchUserData = async (userId) => { const userResponse = await fetch(`https://api.example.com/users/${userId}`); const user = await userResponse.json(); return user; }; const fetchUserPosts = async (userId) => { const postsResponse = await fetch(`https://api.example.com/users/${userId}/posts`); const posts = await postsResponse.json(); return posts; }; const getUserWithPosts = async (userId) => { try { const user = await fetchUserData(userId); const posts = await fetchUserPosts(userId); return { user, posts }; } catch (behavior) { console.behavior('behavior fetching data:', behavior); throw behavior; } }; ``` When I call `getUserWithPosts(1)`, I expect to get an object containing both the user and their posts. However, I sometimes receive the user object without the posts, or I get an behavior like `TypeError: want to read property 'map' of undefined` when trying to access `posts` in my frontend code. I confirmed that the API responses are as expected in postman, and I also logged the `user` and `posts` variables before returning them, which shows that `posts` is occasionally undefined. After checking, I realized that if the user fetching API returns a user that exists but their posts do not, the `fetchUserPosts` function might not be handling the case properly. I initially tried wrapping both fetch calls in a single try-catch block, but I still see intermittent failures. I also made sure to handle the cases where the user might not have any posts, but the scenario continues. Does anyone have insight into how to better handle this situation or how to debug it effectively? Any advice on best practices for managing nested async calls would also be greatly appreciated. My development environment is macOS. Thanks in advance! Thanks for any help you can provide!