.babelrc

{
  "presets": [
    ["env", {
      "targets": { "electron": 1.6 },
      "modules": false
    }],
    "react"
  ],
  "plugins": [
    "transform-class-properties",
    "transform-export-extensions",
    "transform-decorators-legacy",
    "transform-object-rest-spread",
    ["transform-runtime", { "polyfill": false }]
  ],
  "env": {
    "build": {
      "presets": ["react-optimize"]
    },
    "electron": {
      "presets": [
        ["env", {
          "targets": { "node": 7.4 }
        }]
      ]
    },
    "electron-build": {
      "presets": [
        ["env", {
          "targets": { "node": 7.4 },
          "modules": false
        }],
        "react-optimize"
      ]
    },
    "test": {
      "presets": [
        ["env", {
          "targets": { "node": "current" }
        }]
      ],
      "sourceMaps": "inline"
    }
  }
}