import { defineComponent , ref } from 'vue' ; import App from './app' ; const h2 = 1 ; export default defineComponent ( { name : 'Index' , setup ( ) { const count = ref ( 0 ) ; count ++ ; count + 1 ; 1 + count ; return ( ) => ( < > < h1 > About < /h1> < App / > < />); } , } ) ;