Function sendMappedError

packages/server/src/routes/tasks.ts:217–241

* Map a thrown error to the right envelope. See module header for the table. * * `TaskAlreadyFinishedError` is a SPECIAL case — REST.md §3.7 mandates * envelope `code: 40904` + `data: {cancelled: false}` for the idempotent * cancellation shape.

(
  reply: { send(payload: unknown): unknown },
  requestId: string,
  err: unknown,
)

 * cancellation shape.
 */
function sendMappedError(
  reply: { send(payload: unknown): unknown },
  requestId: string,
  err: unknown,
): void {
  if (err instanceof TaskAlreadyFinishedError) {
    reply.send({
      code: ErrorCode.TASK_ALREADY_FINISHED,
      msg: err.message,
      data: { cancelled: false },
      request_id: requestId,
      details: { current_status: err.currentStatus },
    });
    return;
  }
  if (err instanceof TaskNotFoundError) {
    reply.send(errEnvelope(ErrorCode.TASK_NOT_FOUND, err.message, requestId));
    return;
  }
  if (err instanceof SessionNotFoundError) {
    reply.send(errEnvelope(ErrorCode.SESSION_NOT_FOUND, err.message, requestId));
    return;
  }
  throw err;
}