1. 安装插件

npm install unplugin-auto-import @vitejs/plugin-vue -D

2. vite.config.ts中引入插件

import AutoImport from "unplugin-auto-import/vite"

export default defineConfig({
  plugins: [
    vue(), 
    AutoImport({
      imports: ["vue", "vue-router"],
      dts: "auto-imports.d.ts",
    }),
  ],
})

3. 配置tsconfig.json