{
  "env": {
    "development": {
      "presets": ["es2015", "stage-0"],
      "plugins": [
        "add-module-exports",
        ["__coverage__", { "ignore": "test/" }],
        "transform-runtime"
      ]
    },
    "production": {
      "presets": ["es2015-rollup", "stage-0"]
    }
  }
}