keygenServer/client/libs/firebase.ts

// lib/firebase.ts
import { initializeApp, getApps } from 'firebase/app';
import { getAuth, GoogleAuthProvider } from 'firebase/auth';


const firebaseConfig = {
  apiKey: process.env.NEXT_PUBLIC_FIREBASE_API_KEY,
  authDomain: process.env.NEXT_PUBLIC_FIREBASE_AUTH_DOMAIN,
  projectId: process.env.NEXT_PUBLIC_FIREBASE_PROJECT_ID,
  storageBucket: process.env.NEXT_PUBLIC_FIREBASE_STORAGE_BUCKET,
  messagingSenderId: process.env.NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID,
  appId: process.env.NEXT_PUBLIC_FIREBASE_APP_ID,
  measurementId: process.env.NEXT_PUBLIC_FIREBASE_MEASUREMENT_ID
};

const app = getApps().length ? getApps()[0] : initializeApp(firebaseConfig);
export const auth = getAuth(app);
export const googleProvider = new GoogleAuthProvider();