How to handle user authentication with Vue.js and Firebase?

Firebase Authentication is commonly used with Vue.js for user authentication. You can use the Firebase Authentication SDK to handle sign-up, sign-in, and other authentication-related operations.

// main.js
import Vue from 'vue';
import App from './App.vue';
import firebase from 'firebase/app';
import 'firebase/auth';

const firebaseConfig = {
  apiKey: 'YOUR_API_KEY',
  authDomain: 'YOUR_AUTH_DOMAIN',
  projectId: 'YOUR_PROJECT_ID',
  storageBucket: 'YOUR_STORAGE_BUCKET',
  messagingSenderId: 'YOUR_MESSAGING_SENDER_ID',
  appId: 'YOUR_APP_ID'
};

firebase.initializeApp(firebaseConfig);

new Vue({
  render: h => h(App),
}).$mount('#app');

You can then use the Firebase Authentication methods in your components.