import { EventEmitter } from "events";
import { Graph, GraphNode, VisualizationConfig } from "@/types/interfaces/visualization";
export declare class VizServer extends EventEmitter {
    private readonly wss;
    private readonly httpServer;
    private readonly clients;
    private currentGraph;
    private readonly config;
    constructor(port?: number, config?: Partial<VisualizationConfig>);
    private setupWebSocket;
    private handleClientMessage;
    private getGraphMetadata;
    private getNodesByType;
    private getNodesByStatus;
    private sendToClient;
    private broadcast;
    private getClientHtml;
    private processGraph;
    pinNode(nodeId: string, position?: {
        x: number;
        y: number;
    }): void;
    unpinNode(nodeId: string): void;
    private mergeGraphs;
    updateGraph(updates: Partial<Graph>): void;
    updateNode(nodeId: string, updates: Partial<GraphNode>): void;
    close(): void;
}