/**
 * Represents a dependency edge in the service dependency graph.
 */
export interface ServiceDependency {
    from: string;
    to: string;
}
/**
 * Builds and analyzes dependency graph of focused services.
 *
 * Tracks which services depend on which other services and
 * detects circular dependencies.
 */
export declare class DependencyGraphBuilder {
    private readonly dependencies;
    /**
     * Adds a dependency edge to the graph.
     *
     * @param from - Source service name
     * @param to - Target service name
     */
    addDependency(from: string, to: string): void;
    /**
     * Detects circular dependencies in the graph.
     *
     * Uses depth-first search to find cycles.
     *
     * @returns Array of circular dependency paths (e.g., ['A → B → C → A'])
     */
    detectCircularDependencies(): string[];
    /**
     * Depth-first search to detect cycles.
     *
     * @param service - Current service being visited
     * @param visited - Set of all visited services
     * @param recursionStack - Set of services in current DFS path
     * @param path - Current path being explored
     * @param cycles - Array to collect detected cycles
     */
    private dfs;
    /**
     * Gets all dependencies for a given service.
     *
     * @param serviceName - Service name
     * @returns Array of service names that this service depends on
     */
    getDependencies(serviceName: string): string[];
    /**
     * Gets the full dependency graph.
     *
     * @returns Array of all dependency edges
     */
    getGraph(): ServiceDependency[];
}
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