babel/packages/babel-preset-env/test/debug-fixtures/builtins-uglify/options.json

{
  "presets": [
    ["../../lib", {
      "debug": true,
      "targets": {
        "chrome": 55,
        "uglify": true
      },
      "useBuiltIns": "entry",
      "modules": false
    }]
  ]
}