/docs/node_modules/vitepress/dist/client/app/index.js
 const data = initData(router.route);
 app.provide(dataSymbol, data); 

/docs/node_modules/vitepress/dist/client/app/data.js
 export function useData() {
 const data = inject(dataSymbol); 
 if (!data) {
 throw new Error('vitepress data not properly injected in app');
 }
 return data;
 }

import Theme from '@nativescript/vitepress-theme'
import '@nativescript/vitepress-theme/theme/style.css'
import Layout from './Layout.vue'
export default {
 extends: Theme(),
 Layout,
}

<script setup>
import DefaultTheme from 'vitepress/theme'
</script>
<template>
 <DefaultTheme.Layout />
</template>