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scenarios: 'how to read property of undefined' when using context in a nested component with React Hooks

👀 Views: 69 đŸ’Ŧ Answers: 1 📅 Created: 2025-05-31
react context-api hooks JavaScript

After trying multiple solutions online, I still can't figure this out. I'm working with an scenario with accessing context values in a deeply nested component. I have a React application using React 18 and React Router 6, and I'm trying to access a context value that is provided at a higher level in the component tree. However, when I attempt to access this context in a child component, I get an behavior: 'want to read property of undefined'. Here's how my context provider looks: ```javascript import React, { createContext, useState } from 'react'; const AppContext = createContext(); export const AppProvider = ({ children }) => { const [user, setUser] = useState(null); return ( <AppContext.Provider value={{ user, setUser }}> {children} </AppContext.Provider> ); }; export default AppContext; ``` I wrap my main application with this provider like this: ```javascript import { AppProvider } from './AppContext'; function App() { return ( <AppProvider> <Routes> <Route path='/' element={<Home />} /> <Route path='/profile' element={<Profile />} /> </Routes> </AppProvider> ); } ``` In my `Profile` component (which is nested under `AppProvider`), I try to access the context: ```javascript import React, { useContext } from 'react'; import AppContext from './AppContext'; const Profile = () => { const { user } = useContext(AppContext); return <div>{user ? `Welcome, ${user.name}` : 'Please log in.'}</div>; }; ``` This setup seems correct, but I'm getting the behavior when the `Profile` component tries to access `user`. I already checked that the `AppProvider` is properly wrapping the routes, and I'm certain that I'm not trying to access the context before it gets defined. I've also tried using the `useContext` hook in various places within the `Profile` component but still get the same behavior. Any insights on what might be going wrong here or how to debug this scenario further? Am I missing something obvious?