Element-plus按需引入

按需导入

首先你需要安装unplugin-vue-components 和 unplugin-auto-import这两款插件

npm install -D unplugin-vue-components unplugin-auto-import

然后把下列代码插入到你的 Vite 或 Webpack 的配置文件中

// vite.config.ts
import { defineConfig } from 'vite'
import AutoImport from 'unplugin-auto-import/vite'
import Components from 'unplugin-vue-components/vite'
import { ElementPlusResolver } from 'unplugin-vue-components/resolvers'

export default defineConfig({
  // ...
  plugins: [
    // ...
    AutoImport({
      resolvers: [ElementPlusResolver()],
    }),
    Components({
      resolvers: [ElementPlusResolver()],
    }),
  ],
})

这两个插件会在项目根目录下，生成auto-imports.d.ts和components.d.ts这两个声明文件
- 使用自动导入的组件，会在components.d.ts生成相应的导入类型
```
//auto-imports.d.ts
/* eslint-disable */
/* prettier-ignore */
// @ts-nocheck
// noinspection JSUnusedGlobalSymbols
// Generated by unplugin-auto-import
export {}
declare global {

}
```

//components.d.ts
/* eslint-disable */
/* prettier-ignore */
// @ts-nocheck
// Generated by unplugin-vue-components
// Read more: https://github.com/vuejs/core/pull/3399
export {}

declare module 'vue' {
  export interface GlobalComponents {
    ElButton: typeof import('element-plus/es')['ElButton']
    ElRow: typeof import('element-plus/es')['ElRow']
    HelloWorld: typeof import('./src/components/HelloWorld.vue')['default']
    IconCommunity: typeof import('./src/components/icons/IconCommunity.vue')['default']
    IconDocumentation: typeof import('./src/components/icons/IconDocumentation.vue')['default']
    IconEcosystem: typeof import('./src/components/icons/IconEcosystem.vue')['default']
    IconSupport: typeof import('./src/components/icons/IconSupport.vue')['default']
    IconTooling: typeof import('./src/components/icons/IconTooling.vue')['default']
    RouterLink: typeof import('vue-router')['RouterLink']
    RouterView: typeof import('vue-router')['RouterView']
    TheWelcome: typeof import('./src/components/TheWelcome.vue')['default']
    WelcomeItem: typeof import('./src/components/WelcomeItem.vue')['default']
  }
}

然后我们需要在tsconfig.app.json中包含这两个文件。

{
  "extends": "@vue/tsconfig/tsconfig.dom.json",
  "include": ["env.d.ts", "src/**/*", "src/**/*.vue","auto-imports.d.ts","components.d.ts"],//加上这两个声明文件
  "exclude": ["src/**/__tests__/*"],
  "compilerOptions": {
    "composite": true,
    "baseUrl": ".",
    "paths": {
      "@/*": ["./src/*"]
    }
  }
}

按需导入​

按需导入