import type { Server } from './server';
type MessageHandler = (message: unknown) => Promise<void> | void;
export declare class NativeMessagingHost {
    private associatedServer;
    private pendingRequests;
    private messageHandlers;
    constructor();
    setServer(serverInstance: Server): void;
    start(): void;
    private setupMessageHandling;
    private handleMessage;
    private handleStart;
    private handleStop;
    private handlePing;
    private handleToolListUpdated;
    sendRequestToExtensionAndWait(messagePayload: unknown, messageType?: string, timeoutMs?: number): Promise<unknown>;
    private startServer;
    private stopServer;
    sendMessage(message: unknown): void;
    private sendError;
    private cleanup;
    addMessageHandler(type: string, handler: MessageHandler): void;
}
declare const nativeMessagingHostInstance: NativeMessagingHost;
export default nativeMessagingHostInstance;