link-stack/apps/bridge-frontend/app/_lib/authentication.ts

import NextAuth from "next-auth"
import GoogleProvider from "next-auth/providers/google"
import { KyselyAdapter } from "@auth/kysely-adapter"
import { db } from "./database";

export const authOptions = NextAuth({
  // @ts-ignore
  adapter: KyselyAdapter(db),
  providers: [
    GoogleProvider({
      clientId: process.env.GOOGLE_CLIENT_ID!,
      clientSecret: process.env.GOOGLE_CLIENT_SECRET!,
    }),
  ],
})