Sample usage of Sign in with google
https://developers.google.com/identity/gsi/web?hl=en
Not the legacy Google sign-in
npm install
npm start
Runs the app in the development mode.
Open http://localhost:3000 to view it in your browser.
The page will reload when you make changes.
You may also see any lint errors in the console.
Login.js
for google default simple login button & One Tap.
Auth.js
for oauth2.0 client login.