advanced patterns with Nested Async/Await in React Functional Components - Need Insights
I'm prototyping a solution and I'm dealing with I'm working on a project and hit a roadblock. I've been banging my head against this for hours. I'm working on a project and hit a roadblock. I'm experiencing an unexpected behavior in my React functional component when using nested `async/await` calls. I have a component that fetches user data and then attempts to fetch related posts for that user. When I run the following code, it seems that the posts data is always returned as `undefined`, even though the user data fetch seems to complete successfully. Here’s the code snippet: ```javascript import React, { useEffect, useState } from 'react'; const UserProfile = ({ userId }) => { const [user, setUser] = useState(null); const [posts, setPosts] = useState([]); const fetchUserData = async (id) => { const response = await fetch(`https://api.example.com/users/${id}`); const data = await response.json(); return data; }; const fetchUserPosts = async (userId) => { const response = await fetch(`https://api.example.com/users/${userId}/posts`); const data = await response.json(); return data; }; useEffect(() => { const fetchData = async () => { const userData = await fetchUserData(userId); setUser(userData); const userPosts = await fetchUserPosts(userData.id); setPosts(userPosts); }; fetchData(); }, [userId]); if (!user) return <div>Loading...</div>; return ( <div> <h1>{user.name}</h1> <ul> {posts.length ? posts.map(post => <li key={post.id}>{post.title}</li>) : <li>No posts available</li>} </ul> </div> ); }; export default UserProfile; ``` I've verified that the `fetchUserData` is returning the correct user data, but when I log the `userPosts` variable, it always shows `undefined`. I'm not seeing any errors in the console, but I suspect there may be an scenario with the way the fetch calls are structured. Is there something I'm missing in the way I'm handling the response or the user state? I'm using React 17.0.2 and fetching data from a REST API that I have access to. This is part of a larger API I'm building. What am I doing wrong? Has anyone else encountered this? For context: I'm using Javascript on macOS. This is my first time working with Javascript 3.9. This is my first time working with Javascript 3.10.