Should I use environment variables for Firebase config in React?
Yes. Use environment variables for the Firebase config so you do not hardcode it, even though some of it is partly public. This keeps different environments separate and is good practice.
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More FAQs in How to Set Up Firebase Auth in a React Netflix Clone
Create a Firebase project, install the SDK, initialize it, create an AuthContext that tracks the user and exposes sign up, sign in, and sign out, build login and signup pages, protect routes, and listen to auth state changes so the user persists across reloads.
Create an AuthContext provider that listens to Firebase auth state changes and exposes the current user plus signup, signin, and signout functions. Wrap your app in the provider so any component can access auth state.
Create a ProtectedRoute component that checks the auth state and redirects unauthenticated users to the login page. Wrap your authenticated pages like browse in it so only logged-in users can access them.
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