.babelrc

{
  "presets": [
    [
      "@babel/preset-env",
      {
        "modules": false,
        "targets": {
          "browsers": [
            "last 2 versions"
          ]
        }
      }
    ]
  ],
  "comments": false,
  "env": {
    "test": {
      "plugins": [
        "@babel/plugin-transform-modules-commonjs"
      ]
    }
  }
}