// main.ts import { createApp } from 'vue' import App from './App.vue' const app = createApp(App)// 解决 ts 报错 type Filter = {format<T>(str: T): string } declare module 'vue' {export interface ComponentCustomProperties {$filters: Filter,$myArgs: string} }app.config.globalProperties.$myArgs = 'args' app.config.globalProperties.$filters = {format<T>(str: T) {return `xiuxiu-${str}`} } app.mount('#app') <!-- App.vue --> <template><div>{{ $myArgs }}<hr>{{ $filters.format('的杯子') }}</div> </template><script setup lang="ts"> import { getCurrentInstance } from 'vue'; const app = getCurrentInstance() // 利用组件实例输出{{ $filter.format('的杯子') }} console.log(app?.proxy?.$filters.format('的杯子')); </script><style scoped></style>