.babelrc

{
  "presets": [["es2015", {"modules": false}]],
  "env": {
    "test": {
      "presets": ["es2015"],
      "plugins": [
        [
          "babel-plugin-espower",
          {
            "embedAst": true
          }
        ]
      ]
    },
    "test:coverage": {
      "presets": ["es2015"],
      "plugins": [
        [
          "babel-plugin-espower",
          {
            "embedAst": true
          }
        ],
        "babel-plugin-istanbul"
      ]
    }
  }
}