How to programmatically create a JWT using next-auth ?

[shessafridi]

I am trying to implement auth in a way that works on both my Next JS app and any other public clients.
In Expo I integrated the Google login feature which provides me an access token, The flow I want to implement is:

1 Send access token to server
2 Verify the token
3 If all is well then issue a JWT

I am struggling with the step 3, how can I programmatically generate a JWT with the existing logic I have defined in the auth options for next-auth ?