Function setup

packages/server-renderer/__tests__/ssrDirectives.spec.ts:601–610

(props, { expose })

    const renderString = await renderToString(
      createApp({
        setup(props, { expose }) {
          const x = ref('foo')
          expose({ x })
          const __returned__ = { useTestDirective, vTest, ref, x }
          Object.defineProperty(__returned__, '__isScriptSetup', {
            enumerable: false,
            value: true,
          })
          return __returned__
        },
        ssrRender(_ctx, _push, _parent, _attrs) {
          _push(
            `<div${ssrRenderAttrs(