{
  "presets": [
    ["env", {
      "modules": false,
      "targets": {
        "spec":true,
        "node": "current",
        "browsers": "last 3 versions"
      },
      "production": {
        "presets": ["minify"]
      }
    }]
  ],
  "plugins": ["transform-async-generator-functions"]
}