import { type NapCatEvent } from './protocol.js';
import { type NapCatPendingAction, type NapCatWsSocket } from './ws-types.js';
export declare function decodeWsPayload(data: unknown): string;
export declare function handleNapCatWsMessage(data: unknown, options: {
    readonly endpointId: string;
    readonly pending: Map<string, NapCatPendingAction>;
    readonly admit: (ev: NapCatEvent) => void;
}): void;
export declare function callNapCatWsAction(ws: NapCatWsSocket | undefined, pending: Map<string, NapCatPendingAction>, requestId: {
    value: number;
}, action: string, params: Record<string, unknown>): Promise<unknown>;
export declare function startNapCatHeartbeat(ws: NapCatWsSocket | undefined, intervalMs: number, existingTimer?: NodeJS.Timeout): NodeJS.Timeout;
export declare function rejectAllPending(pending: Map<string, NapCatPendingAction>, message?: string): void;