Firebase Service named 'auth' already registered about firebaseui-web HOT 3 CLOSED

Thanks for the tip! Got it resolved.

I had included the latest versions of firebase.js and angularfire.js from bower. I copied the code in the readme and removed the firebase-app.js line because I assumed it's the same as firebase.js

I just realized auth is already baked in to either firebase.js or angularfire.js. Removing the firebase-auth.js line in your sample code solved the issue.

from firebaseui-web.

Are you double including the library src file?

from firebaseui-web.

Got same error, in my case, I am using both

import '@firebase/auth';
import firebase from 'firebase/app';

in my client.

So I actually have both in my package.json,

"@firebase/auth": "0.11.3",
"firebase": "5.9.3",

After I remove @firebase/auth from package.json, the error is gone.

Seems firebase package includes @firebase/auth already.

from firebaseui-web.