initAuth.tsx

// ./initAuth.js
import { init } from 'next-firebase-auth';

const initAuth = () => {
  init({
    authPageURL: '/login',
    appPageURL: "/dashboard",
    loginAPIEndpoint: '/api/login', // required
    logoutAPIEndpoint: '/api/logout', // required
    firebaseAuthEmulatorHost: process.env.FIREBASE_AUTH_EMULATOR_HOST,
    // Required in most cases.
    firebaseAdminInitConfig: {
      credential: {
        projectId: 'sweep-7359d',
        clientEmail: 'example-abc123@my-example-app.iam.gserviceaccount.com',
        // The private key must not be accessible on the client side.
        privateKey: process.env.FIREBASE_PRIVATE_KEY ? JSON.parse(process.env.FIREBASE_PRIVATE_KEY) : undefined,
      },
      databaseURL: 'https://my-example-app.firebaseio.com',
    },
    // Use application default credentials (takes precedence over fireaseAdminInitConfig if set)
    // useFirebaseAdminDefaultCredential: true,
    firebaseClientInitConfig: {
      apiKey: 'AIzaSyCkIzSv37sLpgexi6tTkHN2Vrb223q3J5Q', // required
      authDomain: 'sweep-7359d.firebaseapp.com',
      databaseURL: 'https://my-example-app.firebaseio.com',
      projectId: 'sweep-7359d',
    },
    cookies: {
      name: 'ExampleApp', // required
      // Keys are required unless you set `signed` to `false`.
      // The keys cannot be accessible on the client side.
      keys: [process.env.COOKIE_SECRET_CURRENT, process.env.COOKIE_SECRET_PREVIOUS],
      httpOnly: true,
      maxAge: 12 * 60 * 60 * 24 * 1000, // twelve days
      overwrite: true,
      path: '/',
      sameSite: 'strict',
      secure: true, // set this to false in local (non-HTTPS) development
      signed: true,
    },
    /**
     * Optional function: handler called if there's an unexpected error while
     * verifying the user's ID token server-side.
     */
    // onVerifyTokenError: (err) => {}
    /**
     * Optional function: handler called if there's an unexpected error while
     * refreshing the user's ID token server-side.
     */
    // onTokenRefreshError: (err) => {}
  });
};

export default initAuth;