npm install --save babel-polyfill在package.json中添加依赖，devDependencies：{
…
"babel-polyfill": "^6.22.0"
}
在app.vue中添加引用“import ‘babel-polyfill‘”在webpack.config.js文件中使用module.exports = {
entry: {
app: ["babel-polyfill", "./src/main.js"]
}
};
原文：https://www.cnblogs.com/lgjc/p/9899887.html