Is this a bad way of setting up next auth v5 callbacks?

import { PrismaAdapter } from "@auth/prisma-adapter"
import { type User } from "@prisma/client"
import NextAuth, { type DefaultSession } from "next-auth"

import { getUserById } from "@/lib/data/user"
import authConfig from "@/server/auth.config"
import { db } from "@/server/db"

declare module "next-auth" {
    interface Session extends DefaultSession {
        user: Omit<User, "password" | "emailVerified">
    }
}

export const {
    handlers: { GET, POST },
    auth,
    signIn,
    signOut,
} = NextAuth({
    adapter: PrismaAdapter(db),
    session: {
        strategy: "jwt",
    },
    callbacks: {
        session: async ({ session, token }) => {
            if (token) session.user = { ...token, ...session.user }

            return session
        },
        jwt: async ({ token, user }) => {
            if (!token.sub) return token

            const dbUser = await getUserById(token.sub)

            if (!dbUser) return token

            const userFields = {
                id: dbUser.id,
                name: dbUser.name,
                email: dbUser.email,
                image: dbUser.image,
                role: dbUser.role,
            }

            return { ...userFields, ...user }
        },
    },
    ...authConfig,
})

import { PrismaAdapter } from "@auth/prisma-adapter"
import { type User } from "@prisma/client"
import NextAuth, { type DefaultSession } from "next-auth"

import { getUserById } from "@/lib/data/user"
import authConfig from "@/server/auth.config"
import { db } from "@/server/db"

declare module "next-auth" {
    interface Session extends DefaultSession {
        user: Omit<User, "password" | "emailVerified">
    }
}

export const {
    handlers: { GET, POST },
    auth,
    signIn,
    signOut,
} = NextAuth({
    adapter: PrismaAdapter(db),
    session: {
        strategy: "jwt",
    },
    callbacks: {
        session: async ({ session, token }) => {
            if (token) session.user = { ...token, ...session.user }

            return session
        },
        jwt: async ({ token, user }) => {
            if (!token.sub) return token

            const dbUser = await getUserById(token.sub)

            if (!dbUser) return token

            const userFields = {
                id: dbUser.id,
                name: dbUser.name,
                email: dbUser.email,
                image: dbUser.image,
                role: dbUser.role,
            }

            return { ...userFields, ...user }
        },
    },
    ...authConfig,
})