import type { TerraformState, ResourceDependency, CascadeImpact } from '../resources/types.js';
export interface DependencyGraph {
    dependents: Map<string, ResourceDependency[]>;
    dependencies: Map<string, ResourceDependency[]>;
    resourceTypes: Map<string, string>;
}
export declare function buildDependencyGraph(state: TerraformState): DependencyGraph;
/**
 * Find all resources that depend on the given address.
 * Returns CascadeImpact objects with depth tracking.
 */
export declare function findDependents(graph: DependencyGraph, address: string, visited?: Set<string>, depth?: number): CascadeImpact[];
/**
 * Legacy function for compatibility - returns just ResourceDependency[]
 */
export declare function findDependentsLegacy(graph: DependencyGraph, address: string, visited?: Set<string>): ResourceDependency[];
export declare function findAllAffectedResources(graph: DependencyGraph, addresses: string[]): Map<string, CascadeImpact[]>;
/**
 * Build a human-readable summary of cascade impacts by type.
 * Example: "3 subnets, 2 NAT gateways, 14 EC2 instances"
 */
export declare function buildCascadeSummary(impacts: CascadeImpact[]): {
    byType: Record<string, number>;
    maxDepth: number;
    humanReadable: string;
};
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