ie11对es6支持的问题

Question

.babelrc文件如下

{

  "presets": [

    [

      "latest",

      {

        "modules": false

      }

    ],

    "react",

    "stage-2"

  ],

  "plugins": [

    "transform-async-to-generator",

    "transform-decorators-legacy",

    "transform-runtime",

    [

      "import",

      {

        "libraryName": "antd",

        "style": true

      }

    ]

  ]

}

babel-polyfill也在项目入口引用了　但是ie11还是报错对象不支持startsWith