// No server-rendered flag for this exists, and adding one would be more
// plumbing than reusing what's already on the page: the topbar's own
// logged_in check (views/index.erb) already renders a "Log out" link only
// when logged in. Login state never changes without a full page reload
// (there's no client-side login/logout), so this only needs checking once
// per use, not reactively/on an event.
export function isLoggedIn() {
  return !!document.querySelector('a[href="/logout"]');
}