firebase-auth-lite

import Auth from 'firebase-auth-lite'; // Ensure you set your Firebase API Key, e.g., via environment variable const API_KEY = process.env.FIREBASE_API_KEY ?? 'YOUR_FIREBASE_API_KEY_HERE'; // Instantiate the Auth client const auth = new Auth({ apiKey: API_KEY, // Optional: Add a custom app name if needed // appName: 'my-web-app' }); async function runAuthDemo() { try { console.log('Attempting to sign up a new user...'); // Example: Sign up with email and password const newUser = await auth.signUpWithEmailAndPassword('test@example.com', 'password123'); console.log('New user signed up:', newUser.uid, newUser.email); console.log('\nAttempting to sign in existing user...'); // Example: Sign in with email and password const user = await auth.signInWithEmailAndPassword('test@example.com', 'password123'); console.log('User signed in:', user.uid, user.email); console.log('\nGetting current user session...'); // Example: Get the currently signed-in user const currentUser = await auth.getCurrentUser(); if (currentUser) { console.log('Current active user:', currentUser.uid); } else { console.log('No user currently signed in.'); } console.log('\nAttempting to sign out user...'); // Example: Sign out await auth.signOut(); console.log('User successfully signed out.'); } catch (error) { console.error('Authentication failed:', error.code || error.message); // As of v0.8.1, error messages are Firebase error codes. // Map these codes to user-friendly messages using the official Firebase docs or the library's wiki. } } runAuthDemo();