/**
 * VncBridge — TCP connection to a local VNC server.
 *
 * Handles RFB protocol version negotiation (3.3 / 3.7 / 3.8) and
 * security types: None (1), VNC auth/DES (2), VeNCrypt (19).
 *
 * Emits:
 *   'frame'  (rect: VncRect)  — one decoded framebuffer rectangle
 *   'error'  (err:  Error)    — unrecoverable error (connection closed)
 *   'close'  ()               — TCP connection closed
 */
import { EventEmitter } from 'events';
import type { VncInfo } from './types';
export declare class VncBridge extends EventEmitter {
    private _sock;
    private _width;
    private _height;
    private _bypp;
    private _recvBuf;
    private _closed;
    get width(): number;
    get height(): number;
    /** Connect to a VNC server at 127.0.0.1:port.  Resolves once handshake is done. */
    connect(port: number, password?: string, username?: string): Promise<VncInfo>;
    /** Request a framebuffer update. */
    requestUpdate(x?: number, y?: number, w?: number, h?: number, incremental?: number): void;
    /** Send a key event. */
    sendKey(keysym: number, down: boolean): void;
    /** Send a ClientCutText message (push local clipboard to remote). */
    sendClientCutText(text: string): void;
    /** Send a pointer (mouse) event. */
    sendMouse(x: number, y: number, buttonMask: number): void;
    close(): void;
    private _handleVeNCrypt;
    private _runRunning;
    private _sendSetPixelFormat;
    private _sendSetEncodings;
    private _parseServerMessage;
    private _parseFBU;
}