This site describes solve-engine as it is on main: 2.43.0, which npm does not have yet. npm installs 2.40.0, so a page may show an answer that version does not give yet.

WorkerToMainMessage

type WorkerToMainMessage =
  | ReadyMessage
  | ResultMessage
  | ErrorMessage
  | AsyncUpdateMessage
  | AsyncErrorMessage;

Defined in: packages/engine/src/worker/protocol.ts:166

Everything the worker sends back.