.babelrc

{
  "env": {
    "build": {
      "presets": [["env", { "modules": false }], "stage-3", "react"],
      "plugins": ["external-helpers", "transform-class-properties"]
    },
    "buildProd": {
      "presets": [["env", { "modules": false }], "stage-3", "react"],
      "plugins": [
        "external-helpers",
        "transform-class-properties",
        [
          "transform-react-remove-prop-types",
          { "mode": "remove", "removeImport": true }
        ]
      ]
    },
    "es": {
      "presets": [["env", { "modules": false }], "stage-3", "react"],
      "plugins": ["transform-class-properties"]
    },
    "commonjs": {
      "plugins": [
        ["transform-es2015-modules-commonjs", { "loose": true }],
        "transform-class-properties"
      ],
      "presets": ["stage-3", "react"]
    },
    "test": {
      "presets": ["env", "stage-3", "react"],
      "plugins": ["transform-class-properties"]
    }
  }
}