• app.component
• app.config
• app.directive
• app.mount
• app.unmount
• app.use

main.ts

import {createApp} from 'vue'
import App from'./App.vue'
import Hello from'./Hello.vue'
// 创建应用
const app = createApp(App)//全局组件
app.component('Hello',Hello)//全局属性
app.config.globalProperties.x=99
declare module 'vue' {interface ComponentcustomProperties {x:number}
}//全局指令
app.directive('beauty',(element,{value})=>{element.innerText += valueelement.style.color='green'element.style.backgroundcolor ='yellow'
})

TypeScript 与选项式 API | Vue.js