auth.ts

import { NextResponse } from 'next/server'
import NextAuth from '@auth/nextjs'
import GitHub from '@auth/nextjs/providers/github'

export const {
  handlers: { GET, POST },
  auth,
  CSRF_experimental
} = NextAuth({
  // @ts-ignore
  providers: [GitHub],
  session: { strategy: 'jwt' },
  async authorized({ request, auth }: any) {
    const url = request.nextUrl

    if (request.method === 'POST') {
      const { authToken } = (await request.json()) ?? {}
      // If the request has a valid auth token, it is authorized
      const valid = true
      if (valid) return true
      return NextResponse.json('Invalid auth token', { status: 401 })
    }

    // Logged in users are authenticated, otherwise redirect to login page
    return !!auth
  }
})