Class PromptCancelledError

Awaiting prompt promises reject with this when the prompt is cancelled — by the player (prompt-cancel wire message or the prompt cancel verb), by server-side PromptApi.cancel / cancelAll, or by disconnect cleanup.

Codebase precedent: MqlPermissionError, SecurityError, ContainmentError. Typed Error subclasses give clean instanceof branching at controller catch sites.

try { const sword = await PromptApi.mqlObject(iact, label, matches); } catch (err) { if (err instanceof PromptCancelledError) { // err.reason discriminates 'cancelled' vs 'host-disconnected' return abortCommand(); } throw err; }