I am having issues implementing firebase authentication with Google Provider in NextJS. I set up the environment variables and am successfully connecting to firebase. I am receiving the following error and cant seem to figure out a solution, TypeError: Cannot read properties of undefined (reading 'initializeApp'). Below is my code.
//firebaseApp.js
import { initializeApp } from "firebase/app";
import { getAuth } from "firebase/auth";
import { getDatabase } from "firebase/database";
const firebaseConfig = {//ENV Variables};
// Initialize Firebase
const app = initializeApp(firebaseConfig);
const db = getDatabase(app);
const auth = getAuth(app);
export { db, auth };
//firebaseAuthUI.config.js
import { GoogleAuthProvider } from "firebase/auth"
export const uiConfig = (firebase) => {
return {
signInFlow: "popup",
signInSuccessUrl: "/",
signInOptions: [GoogleAuthProvider.PROVIDER_ID],
};
};
//login.js
import Head from 'next/head';
import { useRouter } from 'next/router';
import { useAuthState } from 'react-firebase-hooks/auth';
import StyledFirebaseAuth from 'react-firebaseui/StyledFirebaseAuth';
import { auth } from '../app/firebaseApp';
import { uiConfig } from '../config/firebaseAuthUI.config';
export default function Login() {
const [user, loading, error] = useAuthState(auth);
const router = useRouter();
if (loading) return 'loading'
else if (error) return error
else if (user) {
router.push('/');
}
const authConfig = uiConfig(auth);
return (
<>
<Head>
<title>Login</title>
</Head>
<StyledFirebaseAuth uiConfig={authConfig} firebaseAuth={auth} />
</>
)
}Maybe you make mistake while creating env files? Maybe you forgot to add NEXT_PUBLIC to env files.
Next.js env files should be like this:
NEXT_PUBLIC_EXAMPLE=123