import { TestGraph } from '../generation/generators/types';
import { PropertyValidationResult } from './types';
/**
 * Validate flow network properties.
 *
 * A flow network must satisfy:
 * 1. Directed graph with source and sink nodes
 * 2. Non-negative edge capacities (weights)
 * 3. Every node lies on some path from source to sink
 * 4. No edges enter the source
 * 5. No edges leave the sink
 *
 * @param graph - The graph to validate
 * @returns PropertyValidationResult with flow network validation
 */
export declare const validateFlowNetwork: (graph: TestGraph) => PropertyValidationResult;
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