Function setup

packages/runtime-core/__tests__/helpers/useModel.spec.ts:33–39

(props)

      props: ['modelValue'],
      emits: ['update:modelValue'],
      setup(props) {
        foo = useModel(props, 'modelValue')
        return () => {
          compRender()
          return foo.value
        }
      },
    })

    const msg = ref('')