Cannot export const revalidate in server component

[anarkrypto]

I'm having this error in appDir with v13.4.2

'use server';

export const revalidate = 60;

export default async function Test () {
    return <></>
}

Error:
x Only async functions are allowed to be exported in a "use server" file.

Only occurs with the 'use client' directive.

But anyway caching is not happening.

Reproduce: https://codesandbox.io/p/sandbox/cannot-revalidate-server-component-dj8bin?file=%2Fapp%2Fpage.tsx%3A12%2C1

[fuma-nama]

The "use server" is used for server actions only, it expects you to export an async function.

By default, Pages are considered as a server component, you don't have to specify use server at the top of the file

[Ra0R]

But why would adding "use server" lead to an error?