babel7.0 兼容ie瀏覽器

替代 @babel/polyfill

// 入口文件出引入
import "core-js/stable";
import "regenerator-runtime/runtime";

// .babelrc 下添加
[
    "@babel/env",
    {
        "corejs": "3",
        "useBuiltIns": "entry",
        "targets": {
            "chrome": "58",
            "ie": "10"
        }
    }
],