在utils/index.js下引入element-ui组件引起启动错误 document is not defined

最近在vue的开发中，昨天运行还是正常的，但是第二天启动就启动不起来，报错的源头也是element组件，让人有些头大

下面是错误报警，让人看不出源头

Starting development server...
 10% building 2/2 modules 0 active ERROR  ReferenceError: document is not defined
ReferenceError: document is not defined
    at Object.<anonymous> (G:\cd\node_modules\element-ui\lib\utils\dom.js:22:39)
    at Module._compile (internal/modules/cjs/loader.js:689:30)
    at Module._compile (G:\cd\node_modules\pirates\lib\index.js:99:24)
    at Module._extensions..js (internal/modules/cjs/loader.js:700:10)
    at Object.newLoader [as .js] (G:\cd\node_modules\pirates\lib\index.js:104:7)
    at Module.load (internal/modules/cjs/loader.js:599:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
    at Function.Module._load (internal/modules/cjs/loader.js:530:3)
    at Module.require (internal/modules/cjs/loader.js:637:17)
    at require (internal/modules/cjs/helpers.js:22:18)
    at Object.<anonymous> (G:\cd\node_modules\element-ui\lib\utils\popup\popup-manager.js:9:12)
    at Module._compile (internal/modules/cjs/loader.js:689:30)
    at Module._compile (G:\cd\node_modules\pirates\lib\index.js:99:24)
    at Module._extensions..js (internal/modules/cjs/loader.js:700:10)
    at Object.newLoader [as .js] (G:\cd\node_modules\pirates\lib\index.js:104:7)
    at Module.load (internal/modules/cjs/loader.js:599:32)

查了很久 才知道原来是index.js文件下引入element-ui的Message组件引起的，取消引入启动正常
但是如果就是需要弹出组件 可以用下面的方法

//1.首先引入`vue`
import Vue from 'vue'
//2.创建vue的实例
let v = new Vue()
//3.通过vue实例调用组件
v.$message.success('内容')