/**
 * Hierarchical sheet generation utilities
 * Shared logic for building child sheets with export connectors
 */
import type { LayoutResult, NetworkGraph } from './models/types.js';
export interface SheetData {
    graph: NetworkGraph;
    layout: LayoutResult;
}
export interface LayoutEngine {
    layoutAsync(graph: NetworkGraph): Promise<LayoutResult>;
}
/**
 * Check if a node is a virtual export connector
 */
export declare function isExportNode(nodeId: string): boolean;
/**
 * Check if a link is a virtual export connector link
 */
export declare function isExportLink(linkId: string): boolean;
/**
 * Build hierarchical sheets from a root graph
 *
 * Creates child sheets for each subgraph with:
 * - Filtered nodes (only those belonging to the subgraph)
 * - Internal links (both endpoints in subgraph)
 * - Export connector nodes/links for boundary connections
 *
 * @param graph - Root network graph with subgraphs
 * @param rootLayout - Layout result for the root graph
 * @param layoutEngine - Engine to layout child sheets
 * @returns Map of sheet ID to SheetData (includes 'root')
 */
export declare function buildHierarchicalSheets(graph: NetworkGraph, rootLayout: LayoutResult, layoutEngine: LayoutEngine): Promise<Map<string, SheetData>>;
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