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