babel/packages/babel-plugin-proposal-pipeline-operator/test/fixtures/hack-double-at/transform-arrow-functions/options.json

{
  "plugins": [
    ["proposal-pipeline-operator", { "proposal": "hack", "topicToken": "@@" }],
    "transform-arrow-functions"
  ],
  "parserOpts": {
    "allowReturnOutsideFunction": true
  }
}