/**
 * Graph Builder - Document Graph with Dual Index
 * Converts document metadata to efficient graph representation using Typed Arrays
 */
export interface DocumentMetadata {
    id: string;
    title: string;
    tags: string[];
    links: {
        target: string;
        type: string;
    }[];
    x?: number;
    y?: number;
}
export interface GraphNode {
    id: number;
    originalId: string;
    title: string;
    tags: string[];
    x: number;
    y: number;
    vx: number;
    vy: number;
    mass: number;
}
export interface GraphEdge {
    source: number;
    target: number;
    type: string;
}
/**
 * Document Graph with Dual Index
 * - Forward edges: source → targets
 * - Backward edges: target → sources (for O(1) backlink lookup)
 */
export declare class DocumentGraph {
    private nodeIdMap;
    private nodeIdReverse;
    private nodes;
    private forward;
    private backward;
    private edgeTypes;
    /**
     * Build graph from document metadata
     */
    buildFromDocuments(documents: DocumentMetadata[]): void;
    /**
     * Get all nodes
     */
    getNodes(): GraphNode[];
    /**
     * Get node by ID
     */
    getNode(id: number): GraphNode | undefined;
    /**
     * Get node by original string ID
     */
    getNodeByOriginalId(originalId: string): GraphNode | undefined;
    /**
     * Get forward edges (outgoing links from node)
     */
    getForwardEdges(nodeId: number): Uint32Array | undefined;
    /**
     * Get backward edges (incoming links to node) - O(1) backlink lookup!
     */
    getBackwardEdges(nodeId: number): Uint32Array | undefined;
    /**
     * Get all edges as array
     */
    getEdges(): GraphEdge[];
    /**
     * Get edge type
     */
    getEdgeType(source: number, target: number): string | undefined;
    /**
     * Update node position (for layout algorithm)
     */
    updateNodePosition(nodeId: number, x: number, y: number): void;
    /**
     * Update node velocity (for physics simulation)
     */
    updateNodeVelocity(nodeId: number, vx: number, vy: number): void;
    /**
     * Get graph statistics
     */
    getStats(): {
        nodeCount: number;
        edgeCount: number;
        avgDegree: number;
        maxDegree: number;
    };
}