.babelrc

{
  "presets": ["react"],
  "env": {
    "development": {
      "presets": [
        [
          "env",
          {
            "modules": false
          }
        ],
        "stage-0"
      ]
    },
    "test": {
      "presets": ["env", "stage-0"]
    },
    "production": {
      "presets": [
        [
          "env",
          {
            "targets": {
              "browsers": ["last 2 versions", "ie >= 8"]
            },
            "useBuiltIns": true,
            "debug": true
          }
        ]
      ],
      "plugins": [
        "add-module-exports",
        "transform-class-properties",
        "syntax-async-generators",
        "transform-react-remove-prop-types",
        "transform-react-constant-elements",
        "transform-react-inline-elements"
      ]
    }
  }
}