Firebase Authentication not persisting

Question

Authentication doesn\'t seem to persist after page has been refreshed. Even after using firebase.auth.Auth.Persistence.LOCAL.

Whenever I log into my app

Answer 1

You need to use onAuthStateChanged listener to detect the initial auth state:

firebase.auth().onAuthStateChanged(user => {
  if (user) {
    // User is signed in.
  } else {
    // User is signed out.
  }
});