.babelrc

{
  "env": {
    "test": {
      "presets": [
        [
          "env",
          {
            "modules": false,
            "useBuiltIns": "usage",
            "debug": true
          }
        ],
        "react",
        "jest"
      ],
      "plugins": [
        "transform-es2015-modules-commonjs",
        "transform-decorators-legacy",
        [
          "transform-runtime",
          {
            "helpers": false,
            "polyfill": false,
            "regenerator": true,
            "moduleName": "babel-runtime"
          }
        ]
      ]
    }
  },
  "presets": [
    [
      "env",
      {
        "modules": false,
        "useBuiltIns": "usage",
        "debug": false
      }
    ],
    "react",
    "stage-2"
  ],
  "plugins": [
    "transform-decorators-legacy",
    [
      "transform-runtime",
      {
        "helpers": false,
        "polyfill": false,
        "regenerator": true,
        "moduleName": "babel-runtime"
      }
    ]
  ]
}