/**
 * Graph service handles graph management operations.
 */
import { ServiceContext } from './service-context';
import { GraphInfo, GraphType } from '../types';
/**
 * Graph service for managing graphs.
 */
export declare class GraphService {
    private ctx;
    constructor(ctx: ServiceContext);
    /**
     * Create a new graph.
     */
    createGraph(name: string, graphType?: GraphType, description?: string): Promise<void>;
    /**
     * Delete a graph.
     */
    dropGraph(name: string, ifExists?: boolean): Promise<void>;
    /**
     * Set the current graph for the session.
     */
    useGraph(name: string): Promise<void>;
    /**
     * Return all available graphs.
     */
    listGraphs(): Promise<GraphInfo[]>;
    /**
     * Return information about a specific graph.
     */
    getGraphInfo(name: string): Promise<GraphInfo>;
}