首先安装babel-polyfill

npm install babel-polyfill --save-dev

入口文件引用，在main.js中引用

import 'babel-polyfill'

配置文件webpack.base.conf.js修改

entry: {
app: './src/main.js'
}

修改为

entry: {
app: ["babel-polyfill", "./src/main.js"]
}

发现页面还是空白，无法正确解析，一直app.js一直报错，语法错误

再次修改配置文件webpack.base.conf.js之后运行正常，我用的是iview，如果用的是element-ui把iview对应着把element-ui即可

{
test: /\.js$/,
loader: 'babel-loader',
include: [resolve('src'), resolve('test'), resolve('/node_modules/iview/src'), resolve('node_modules/webpack-dev-server/client')]
}

参考：https://blog.csdn.net/A_one2010/article/details/79153388

参考： https://www.cnblogs.com/tmsdxcz/p/9117834.html

参考：https://blog.csdn.net/u012733501/article/details/82665736