babel/packages/babel-parser/test/fixtures/experimental/pipeline-operator-hack/hack-hash-proposal-caret-topic-then-equality/options.json

{
  "plugins": [["pipelineOperator", { "proposal": "hack", "topicToken": "#" }]],
  "throws": "Invalid topic token ^. In order to use ^ as a topic reference, the pipelineOperator plugin must be configured with { \"proposal\": \"hack\", \"topicToken\": \"^\" }. (1:9)"
}