{
  "presets": [
    [
      "@babel/preset-env",
      {
        "modules": false,
        "corejs": "3.0.1",
        "targets": {
          "browsers": "> 1%, IE 11, not op_mini all, not dead",
          "node": 8
        },
        "debug": false,
        "loose": true,
        // 无需引入babel-polyfill，自动检索所需配置文件
        "useBuiltIns": "usage"
      }
    ]
  ]
}