/**
 * In-Memory Delegation Graph Storage Provider
 *
 * Memory-based implementation for testing and development.
 * NOT suitable for production (no persistence).
 *
 * SOLID: Implements DelegationGraphStorageProvider interface
 */
import type { DelegationGraphStorageProvider, DelegationNode } from '../delegation-graph';
/**
 * Memory-based Delegation Graph storage
 *
 * Stores delegation nodes in memory with efficient graph queries.
 * Useful for:
 * - Unit tests
 * - Integration tests
 * - Development/debugging
 * - Examples
 */
export declare class MemoryDelegationGraphStorage implements DelegationGraphStorageProvider {
    private nodes;
    /**
     * Get a delegation node by ID
     */
    getNode(delegationId: string): Promise<DelegationNode | null>;
    /**
     * Save a delegation node
     */
    setNode(node: DelegationNode): Promise<void>;
    /**
     * Get all children of a delegation
     */
    getChildren(delegationId: string): Promise<DelegationNode[]>;
    /**
     * Get the full chain from root to this delegation
     */
    getChain(delegationId: string): Promise<DelegationNode[]>;
    /**
     * Get all descendants (children, grandchildren, etc.)
     *
     * Uses BFS for efficiency.
     */
    getDescendants(delegationId: string): Promise<DelegationNode[]>;
    /**
     * Delete a node
     */
    deleteNode(delegationId: string): Promise<void>;
    /**
     * Clear all data (for testing)
     */
    clear(): void;
    /**
     * Get all node IDs (for testing)
     */
    getAllNodeIds(): string[];
    /**
     * Get graph statistics (for testing/debugging)
     */
    getStats(): {
        totalNodes: number;
        rootNodes: number;
        leafNodes: number;
        maxDepth: number;
    };
    /**
     * Synchronous chain retrieval (for stats)
     */
    private getChainSync;
}
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