Apollo Client SSR and HTTP error codes

Help
,
1

Hey everyone,
we use following pattern in our app:

export default function ProductPage() {
  const pageContext = usePageContext();
  const { loading, error, data } = useGetProductByHandleQuery({
    variables: { handle: pageContext.routeParams.handle },
  });

  if (loading) {
    return <FullPageLoading />;
  }

  if (error) {
    return <FullPageError message="500 Server Error" />;
  }

  if (data?.product) {
    return <ProductPageTemplate product={data.product} />;
  } else {
    return <FullPageError message="404 Not Found" />;
  }
}

It works just fine; however, we cannot figure out how to return the 500 / 404 errors, so our server can pick them up from the React DOM tree and respond with proper HTTP code.

How this is typically handled?