vue项目在IE报错ReferenceError: “Promise”未定义

vue-cli项目在IE下运行，会在钩子函数出现 ReferenceError: “Promise”未定义

1.安装最新的web-pack-server 命令行

npm install --save-dev webpack-server

2.安装Babel Polyfill 

npm install --save babel-polyfill

2.1在webpack.base.conf.js文件引入babel-polyfill

require("babel-polyfill")

2.2在main.js文件引入babel-polyfill

import "babel-polyfill";

3.运行vue-cli项目 

npm run dev