{
  "env": {
    "test": {
      "presets": ["env", "react"],
      "plugins": ["transform-object-rest-spread", "transform-class-properties", "transform-es2015-modules-commonjs"]
    },
    "build": {
      "presets": [
          ["env", { "modules": false} ],
          "react"
      ],
      "plugins": ["external-helpers", "transform-object-rest-spread", "transform-class-properties"]
    }
  }
}