SuperTokens is an open source authentication solution offering features like: Different types of login: Email / password, Passwordless (OTP or Magic link based).

SuperTokens.com

screenshot-from-2022-11-10-13-19-35

How can I find whether it is a existing user/new user?

if the status is `OK`, then the `response` variable should contain a boolean like `createNewUser`

I also want to fetch user details using access token & store it in my db. Should i write the logic for fetching user details in frontend/backend?

just like shown in the code snippet above

but I am getting the access token in the frontend right?

the google' access token is on the backend

the code snippet above is on the backend init function