React 18: implementing state updates in nested components using useContext and useMemo
I'm working with a question with state management in my React 18 application where I'm using `useContext` and `useMemo` to manage the state across nested components. I have a context that provides user data, and a nested component that depends on this context to render user-specific information. However, when I update the user data in the context, the nested component doesn’t re-render as expected. Here’s a simplified version of my code: ```javascript import React, { createContext, useContext, useState, useMemo } from 'react'; const UserContext = createContext(); const UserProvider = ({ children }) => { const [user, setUser] = useState({ name: 'John', age: 30 }); const value = useMemo(() => ({ user, setUser }), [user]); return <UserContext.Provider value={value}>{children}</UserContext.Provider>; }; const UserProfile = () => { const { user } = useContext(UserContext); return <div>Name: {user.name}, Age: {user.age}</div>; }; const UpdateUser = () => { const { setUser } = useContext(UserContext); return <button onClick={() => setUser(prev => ({ ...prev, age: prev.age + 1 }))}>Increment Age</button>; }; const App = () => { return ( <UserProvider> <UserProfile /> <UpdateUser /> </UserProvider> ); }; export default App; ``` I have tried several things, including ensuring that the state update is done immutably and checking that I am indeed receiving the proper context values in the nested components. However, when I click the button to increment the user's age, the `UserProfile` component does not update, even though the console shows that the user state is being updated correctly. I also verified that the `value` in the context provider is being updated since it is memoized. The message in the console shows that the `UserProfile` is not re-rendering, but it doesn't provide much detail. Can anyone guide to figure out why the nested component isn't updating as expected? Are there any specific pitfalls with using `useMemo` that I might be missing?