[memo] Enable Firebase Auth (Google Login) with Flutter Web App

Posted: September 1, 2020

Use the right version

https://github.com/flutter/flutter/issues/54538#issuecomment-616733091

# pubspec.yml
dependencies:
...
  google_sign_in: ^4.4.3

Configure Auth setting

Follow the instruction below

https://github.com/flutter/plugins/blob/master/packages/google_sign_in/google_sign_in_web/README.md#web-integration

add tag into web/index.html
configure credentials https://console.developers.google.com/apis/credentials

Add the Web App to Firebase

https://github.com/FirebaseExtended/flutterfire/issues/1688#issuecomment-581014238