personae/app/composables/useOptionsCache.js

export default function useOptionsCache() {
  const queryCache = useQueryCache()
  const oldOptions = ref()

  const update = () => {
    oldOptions.value = queryCache.getQueryData(characterListQuery.key)

    queryCache.setQueryData(characterOptionsQuery.key, () =>
      getCharacterOptions(queryCache.getQueryData(characterOptionsQuery.key))
    )
  }

  const rollback = () =>
    queryCache.setQueryData(characterOptionsQuery.key, () => oldOptions.value)

  return { update, rollback }
}