.babelrc

{
  "presets": [
    "@babel/preset-react",
    [
      "@babel/preset-env",
      {
        "modules": false,
        "targets": {
          "browsers": [
            "> 1%",
            "last 2 versions",
            "not ie <= 8"
          ]
        }
      }
    ]
  ],
  "plugins": [
    "@babel/plugin-syntax-dynamic-import",
    "@babel/plugin-proposal-class-properties",
    [
      "@babel/plugin-transform-runtime",
      {
        "absoluteRuntime": false,
        "corejs": false,
        "helpers": true,
        "regenerator": true,
        "useESModules": false
      }
    ],
    [
      "import",
      {
        "libraryName": "antd",
        "libraryDirectory": "es",
        "style": "css"
      }
    ]
  ],
  "env": {
    "test": {
      "presets": [
        "@babel/preset-env"
      ],
      "plugins": [
        "react-hot-loader/babel"
      ]
    }
  }
}