import type { Message } from "./Message" ; /** Should be implemented by Serial API responses and callbacks which indicate success of the operation */ export interface SuccessIndicator { /** Whether the operation was successful */ isOK ( ) : boolean ; } export function isSuccessIndicator < T extends Message > ( msg ) { return typeof ( msg as any ) . isOK === "function" ; } /**
 * Should be implemented by Serial API callbacks which are received multiple times to indicate whether further callbacks are expected
 */ export interface MultiStageCallback { /** Whether this callback is the final one */ isFinal ( ) : boolean ; } export function isMultiStageCallback < T extends Message > ( msg ) { return typeof ( msg as any ) . isFinal === "function" ; }