/**
 * Graph Comparator
 *
 * Compares the current generated graph with the saved (blessed) graph.
 * Used in validate mode to ensure developers have updated the graph file.
 */
import type { EnhancedGraph } from './graph-sorter';
/**
 * Difference between two graphs
 */
export interface GraphDiff {
    added: string[];
    removed: string[];
    modified: {
        project: string;
        addedDeps: string[];
        removedDeps: string[];
        levelChanged: {
            from: number;
            to: number;
        } | null;
    }[];
}
/**
 * Comparison result
 */
export interface ComparisonResult {
    identical: boolean;
    diff: GraphDiff;
    summary: string;
}
/**
 * Compare two graphs and return the differences
 *
 * @param current - Currently generated graph
 * @param saved - Previously saved (blessed) graph
 * @returns Comparison result with detailed diff
 */
export declare function compareGraphs(current: EnhancedGraph, saved: EnhancedGraph): ComparisonResult;