babel/packages/babel-parser/test/fixtures/experimental/pipeline-operator-hack/hack-hash-proposal-v8intrinsic/options.json

{
  "plugins": [
    ["pipelineOperator", { "proposal": "hack", "topicToken": "#" }],
    "v8intrinsic"
  ],
  "throws": "Cannot combine v8intrinsic plugin and Hack-style pipes."
}