VueCli3 兼容IE11 配置艰苦历程

由于目前项目是采用VueCli3 搭建的项目，对google，火狐、eage 、360等浏览器兼容不错，但是对IE确出现了问题，目前项目要上线，那个着急啊，花了将近两天的时间从网上那个度娘，必应啊，但还好最终还是完美解决了。现在对自己这两天的辛苦做个总结，也当是记录一下自己的感悟。
当前项目前端版本：
package.json 

{
  "name": "vue-antd-pro",
  "version": "1.2.0",
  "private": true,
  "scripts": {
    "serve": "vue-cli-service serve",
    "build": "vue-cli-service build",
    "lint": "vue-cli-service lint",
    "test:unit": "vue-cli-service test:unit"
  },
  "dependencies": {
    "@antv/data-set": "^0.10.1",
    "@fortawesome/fontawesome-svg-core": "^1.2.25",
    "@fortawesome/free-solid-svg-icons": "^5.11.2",
    "@fortawesome/vue-fontawesome": "^0.1.8",
    "ant-design-vue": "^1.6.2",
    "axios": "^0.18.0",
    "babel-polyfill": "^6.26.0",
    "browserslist": "^4.12.0",
    "caniuse-lite": "^1.0.30001062",
    "core-js": "^2.6.11",
    "echarts": "^4.6.0",
    "enquire.js": "^2.1.6",
    "js-cookie": "^2.2.0",
    "lodash.get": "^4.4.2",
    "lodash.pick": "^4.4.0",
    "md5": "^2.2.1",
    "moment": "^2.24.0",
    "nprogress": "^0.2.0",
    "viser-vue": "^2.3.3",
    "vue"