How can I access to request object from [...nextauth]/route? (NextJS 13/14, App Router)

[prunusnira]

What I want to do?

access to query params from req object. by using

req.nextUrl.searchParams

as third party i use response several information with query parameter

What I tried

https://next-auth.js.org/configuration/initialization#route-handlers-app

In this doc, I can see there's no example to access req: NextRequest from App Router. there's only example for page router, which i also tried but not worked for app router as it is.

but as i got some idea from that document, i tried something like this

const createHandler = (req: NextRequest) => NextAuth({
    .... authOptions here, referring req
})

export async function GET(req: NextRequest) {
    return await createHandler(req);
}

export async function POST(req: NextRequest) {
    return await createHandler(req);
}

But this results error

Error: No response is returned from route handler '/[...nextauth]/route.ts'. Ensure you return a `Response` or a `NextResponse` in all branches of your handler.

As we basically use

export { handler as GET, handler as POST };

so i thought above method would work, but it was not.
is there any workaround to get request object from app router?

i already googled, but i can't find how to get it.
thanks in advance