@prefecthq/prefect-ui-library/src/compositions/useOptionalRules.ts

This library is the Vue and Typescript component library for [Prefect 2](https://github.com/PrefectHQ/prefect) and [Prefect Cloud 2](https://www.prefect.io/cloud/). _The components and utilities in this project are not meant to be used independently_.

import { computed, Ref } from 'vue'

// copied and slightly modified from vee-validate since its not exported...
type GenericValidateFunction = (value: unknown) => boolean | string | Promise<boolean | string>
type Rules = GenericValidateFunction | GenericValidateFunction[] | undefined

export function useOptionalRules(rules: Rules, apply: Ref<boolean>): Ref<Rules> {
  return computed(() => apply.value ? rules : undefined)
}