Firebase: Error (auth/operation-not-supported-in-this-environment)

Question

JS file config is

import {initializeApp} from 'firebase/app';
import {getAuth, signInWithPopup, GoogleAuthProvider } from "firebase/auth";

const firebaseConfig = {
    apiKey: "",
    authDomain: "",
    databaseURL: "",
    projectId: "",
    storageBucket: "",
    messagingSenderId: "",
    appId: ""
  };
initializeApp(firebaseConfig);

export async function postLogin  (req, res, next) {
    const provider = new GoogleAuthProvider();
    const auth = getAuth();   
    signInWithPopup(auth, provider)
     .then((res)=>{
      console.log(res);
     })
     .catch((err)=>console.log('ERROR : ' + err));
}

And a pug file with a button triggers the "postLogin" function. The result is error Firebase: Error (auth/operation-not-supported-in-this-environment)

I read lots of documents and blogs, unfortunately not solve the case. Many documents are react based. But I don't use react. Is that any solution? Regards

Answer 1

Did you follow steps at https://firebase.google.com/docs/auth/web/google-signin

Before you begin Add Firebase to your JavaScript project. Enable Google as a sign-in method in the Firebase console: In the Firebase console, open the Auth section. On the Sign in method tab, enable the Google sign-in method and click Save.