.babelrc

{
  "presets": [
    "stage-0",
    "stage-1",
    "stage-2",
    [
      "env",
      {
        "modules": false,
        "targets": {
          "node": "4.8",
          "browsers": ["last 2 versions"],
          "ie": 8
        }
      }
    ]
  ],
  "plugins": ["transform-object-rest-spread"]
}