was just following this guide: https://authjs.dev/getting-started/installation?framework=Next.js

and was getting this error: TypeError: (0 , {imported module [project]/src/auth.js [app-rsc] (ecmascript)}.signIn) is not a function

// @/app/api/auth/[...nextauth]/route.js
import { handlers } from "@/auth"
export const { GET, POST } = handlers

// @/auth.js
import NextAuth from "next-auth"
import Google from "next-auth/providers/google"
 
export const { handlers, signIn, signOut, auth } = NextAuth({
  providers: [Google],
})

// @/signup/page.js
import { signIn } from "@/auth"
 
export default function SignIn() {
  return (
    <form
      action={async () => {
        "use server"
        await signIn("google")
      }}
    >
      <button type="submit">Signin with Google</button>
    </form>
  )
} 

Its just basic code straight from the guide, idk where its wrong