Just like regular visits, you may pass errors (as a string) or a callback to the preserveScroll and preserveState options of Client Side Visits. With regular visits, this will be resolved based on the page props from the response (see RequestParams.resolvePreserveOption()). This PR makes sure this also happens on Client Side Visits.

router.push({
  url: '/users',
  component: 'Users',
  props: { errors: {} },
  preserveScroll: 'errors',
  preserveState: 'errors',
})

This was originally planned in PR #2549, but I decided to split it up into multiple PRs for clarity.