import Vue2 from 'vue' import * as Vue3 from 'vue3' window.onload = () => { const App2 = Vue2.extend({ name: 'App2', data() { return {message: 'Vue 2!'} }, template: `<p>Hello {{message}}</p>`, created() { console.log(`created v2`) } }) const app2 = new Vue2({ components: {App2}, template: `<App2 />`, }) app2.$mount('#vue2') const App3 = { data() { return {message: 'Vue 3!'} }, template: `<p>Hello