firebase.storage() error firebase.storage is not a function in Next.js

import firebase from "firebase";

// For Firebase JS SDK v7.20.0 and later, measurementId is optional
constfirebaseConfig={
 // config
};

constfirebaseApp=!firebase.apps.length
  ? firebase.initializeApp(firebaseConfig)
  : firebase.app();

const db = firebaseApp.firestore();
const auth = firebase.auth();
const provider = new firebase.auth.GoogleAuthProvider();
const storage=firebaseApp.storage()

export {auth, provider, storage};

export default db;