Error on firebase require in node JS

[ahmad1508]

I'm trying to use firebase auth in the backend for authentification i tried to follow the firebase documentation to import these functions which does not work for nodeJS

import { getAuth, createUserWithEmailAndPassword } from "firebase/auth";
const auth = getAuth();
createUserWithEmailAndPassword(auth, email, password)
  .then((userCredential) => {
    Signed in 
    const user = userCredential.user;
  })
  .catch((error) => {
    const errorCode = error.code;
    const errorMessage = error.message;  });

i tried to change the into a const ... = require() instead of an import
but now i'm getting this error
FirebaseError: Firebase: No Firebase App '[DEFAULT]' has been created - call Firebase App.initializeApp() (app/no-app).

if i use the old version with firebase 8 requiring firebase i'm getting this error,
[Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: No "exports" - Firebase](https://stackoverflow.com/questions/69200493/error-err-package-path-not-exported-no-exports-firebase)

i'm trying to create a user in a express app endpoint:

   app.post('/signup', (req, res) => {
    const newUser = {
        email: req.body.email,
        password: req.body.password,
        confirmPassword: req.body.confirmPassword,
        handle: req.body.handle,
    }

    createUserWithEmailAndPassword(auth, newUser.email, newUser.password)
        .then(data => {
            return res.status(201).json({ message: `user${data.user.uid} signed up succesfully` })
        })
        .catch(err => {
            console.error(err)
            return res.status(500).json({ error: err.code })
        })
   })

How can i solve my problem ??