import { WebSocket } from 'ws';
export type CLIWebSocketMessage = {
    type: string;
    data?: unknown;
};
declare class CLIWebSocketServer {
    private server?;
    private instanceId;
    private logPrefix?;
    private debug?;
    constructor({ instanceId, logPrefix, debug, }: {
        instanceId: string;
        logPrefix?: string;
        debug?: boolean;
    });
    private log;
    private logError;
    sendMessage(websocket: WebSocket, message: CLIWebSocketMessage): void;
    private sendCliMetadata;
    start({ onConnection, onMessage, onClose, metadata, }: {
        onConnection?: (websocket: WebSocket) => void;
        onMessage?: (websocket: WebSocket, message: CLIWebSocketMessage) => boolean;
        onClose?: () => void;
        metadata?: Record<string, unknown>;
    }): Promise<void>;
    shutdown(): void;
}
export default CLIWebSocketServer;