Firebase authentication

If you need fast and simple authentication for your web app, Firebase is the right tool for you. You can support custom email and password authentication and/or services like Google, Facebook, etc.

React/Redux app usage

Everything about web authentication is well documented in Firebase docs.


  • Install firebase through npm: npm i --save firebase
  • Initialize Firebase among with store (typically in createStore.js file)
  • Save info about authenticated user in Redux store
  • Wrapp your App component with higher order component observing user's authentication state
  • Use Redux Saga channels for Firebase auth state observing logic
// Login handler
function* handleLoginForm(action) {
    yield firebase.auth().signInWithEmailAndPassword(email, password);

// Factory function returning channel with Firebase auth state observer
function getAuthChannel() {
    return eventChannel(emit => {
        return firebase.auth().onAuthStateChanged(user => emit({ user }));

// Auth state observing logic
function* observeUserFirebase() {
    yield put(authActions.firebaseAuthFetching(true));
    const authChannel = yield call(getAuthChannel);

    while (true) {
        const { user } = yield take(authChannel);
        yield put(authActions.setUser(user));

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