Angular 2+ Firebase Authentication - Set Login State Persistence

Question

I\'ve set up authentication using firebase for an angular app in an auth service, and I\'m trying to ensure session state persistence following successful login.

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Answer 1

It is likely you are not using onAuthStateChanged listener to detect the initial Auth state on page load.

firebase.auth().onAuthStateChanged(user => {
  if (user) {
    // User signed in.
  } else {
    // User not signed in.
  }
});