React 18: Issue with Updating Context Value After State Change in Functional Component
I've hit a wall trying to I've been researching this but I'm learning this framework and I've been banging my head against this for hours... I'm facing an issue where updating a context value does not seem to trigger a re-render in my functional component. I'm using React 18 with the latest version of React Router. I've implemented a simple context provider for user authentication, but after I update the user state, the components consuming this context do not re-render as expected. Here's a simplified version of my context setup: ```javascript import React, { createContext, useContext, useState } from 'react'; const AuthContext = createContext(); const AuthProvider = ({ children }) => { const [user, setUser] = useState(null); const login = (userData) => { setUser(userData); }; const logout = () => { setUser(null); }; return ( <AuthContext.Provider value={{ user, login, logout }}> {children} </AuthContext.Provider> ); }; export const useAuth = () => useContext(AuthContext); export default AuthProvider; ``` In my component where I consume the context, I have the following code: ```javascript import React from 'react'; import { useAuth } from './AuthProvider'; const UserProfile = () => { const { user, logout } = useAuth(); if (!user) return <div>Please log in.</div>; return ( <div> <h1>Welcome, {user.name}!</h1> <button onClick={logout}>Logout</button> </div> ); }; export default UserProfile; ``` When I call the `login` function from a different component, the `user` state updates, but `UserProfile` does not re-render. I checked that `UserProfile` is indeed wrapped in `AuthProvider`. I suspect it may be related to how I’m updating the context or possibly an issue with the React 18 rendering behavior. I’ve tried moving the context value into a separate state variable to see if that would help, but the issue persists. Here’s an example of how I call the `login` function: ```javascript const handleLogin = () => { const mockUser = { name: 'John Doe' }; login(mockUser); }; ``` After calling `handleLogin`, I expected `UserProfile` to re-render and display the logged-in user's name. Instead, I still see the 'Please log in.' message. I’ve also checked the React DevTools to confirm that the context value is indeed changing, but it does not seem to reflect in the UI. Can anyone provide insights on what might be going wrong here? I'm developing on Ubuntu 20.04 with Javascript. Any suggestions would be helpful. I'm on Debian using the latest version of Javascript. This is for a microservice running on Windows 10. I'd be grateful for any help.