Vue babel-polyfill 解决IE兼容问题

一、下载 babel-polyfill 依赖

npm install babel-polyfill -S

二、在main.js 中引入

 import "babel-polyfill";

三、在vue.config.js中配置

module.exports = {
	chainWeback:config => {
			config.entry.app=["@babel/polyfill","./src/main.js"];
	}
}

四、在vue.config.js 同级目录创建babel.config.js

module.exports = { 
	presets:[
		[
			"@vue/app",
			{
				useBuiltIns:"entry",
				polufills:[ "es6.promise"," es6.symbol " ]
			}
		]
	]
};