.babelrc

{
  "env": {
    "production": {
      "presets": [
        ["minify",
          {
            "builtIns": false
          }
        ]
      ]
    },
    "test": {
      "plugins": [
        [
          "istanbul",
          {
            "include": [
              "src/**/*.js"
            ]
          }
        ]
      ]
    }
  },
  "plugins": [
    [
      "@babel/plugin-transform-runtime",
      {
        "regenerator": true
      }
    ]
  ],
  "presets": [
    "@babel/preset-env",
    "@babel/preset-flow",
    "@babel/preset-react"
  ]
}