Function mustNotBeLoggedIn

mustNotBeLoggedIn(auth): {} | {
    redirect: {
        destination: string;
        permanent: false;
    };
}
A utility function that is able to check the user's authentication state on the server side before rendering a page, and redirect them if needed.
Parameters
- auth: StartingPageRenderAuthenticationOptions
  The initial authentication state of the page
Returns {} | {
    redirect: {
        destination: string;
        permanent: false;
    };
}
An object that is able to extend the GetServerSidePropsResult to include a redirect if necessary
- Defined in utils/authentication.ts:166