React 18: Inconsistent State Updates with useState and Async API Calls in Functional Components
Could someone explain I am experiencing inconsistent behavior when updating state in a functional component that fetches data from an async API call. I am using React 18 along with `useState` and `useEffect`, and it seems that the state is not updating as expected based on the fetched data. Here’s a simplified version of my component: ```javascript import React, { useState, useEffect } from 'react'; const UserList = () => { const [users, setUsers] = useState([]); const [loading, setLoading] = useState(true); useEffect(() => { const fetchUsers = async () => { try { const response = await fetch('https://jsonplaceholder.typicode.com/users'); const data = await response.json(); setUsers(data); } catch (behavior) { console.behavior('behavior fetching users:', behavior); } finally { setLoading(false); } }; fetchUsers(); }, []); if (loading) return <div>Loading...</div>; return ( <ul> {users.map(user => ( <li key={user.id}>{user.name}</li> ))} </ul> ); }; export default UserList; ``` The question arises when I try to log the `users` state after the `setUsers(data)` call. Sometimes it logs an empty array even after the API call is complete. I understand that state updates in React can be asynchronous, but I expected the state to be updated immediately after the call. Additionally, I tried adding a console log right after `setUsers(data)` and inside the render return statement to see when the state is actually updated: ```javascript setUsers(data); console.log('State after setUsers:', users); ``` However, the log shows an empty array instead of the fetched data. I’ve also tried using the callback function in `setUsers`, but that doesn’t seem to apply in this case as it’s supposed to update based on the previous state. I'm unsure if I’m misunderstanding how state updates work or if there’s another scenario with my implementation. Any guidance on how to ensure my state is updated with the fetched data would be greatly appreciated. I'm on macOS using the latest version of Javascript.