Is there a 1st party auth package? I can't remember any - They were guiding you to the adoniscasts videos, which some are paid. Very hard to get traction like this.
"AdonisJS ships with a robust and secure authentication system you can use to log in and authenticate users of your application. Be it a server-rendered application, a SPA client, or a mobile app, you can set up authentication for all of them."
