// 安装core-js@3.0 和 regenerator-runtime

npm install --save core-js@3
npm install --save regenerator-runtime

// babel.config.js

presets: [
  [
  	"@babel/preset-env", 
  	{
    	useBuiltIns: "entry", // or "usage"
    	corejs: 3,
  	}
  ]
]

// 入口文件main.js最上面

import "core-js/stable";
import "regenerator-runtime/runtime";