.babelrc

{
  "presets": [
    [
      "es2015", {"modules": false}
    ],
    "es2016",
    "es2017",
    "react"
  ],
  "plugins": [
    "transform-object-rest-spread"
  ],
  "env": {
    "test": {
      "plugins": ["transform-es2015-modules-commonjs"]
    }
  }
}