/**
 * In-memory store for delegated tool results.
 *
 * Stores full tool results that were replaced by summaries, allowing
 * the agent to recall them via `recall_full_result`. Implements TTL
 * expiration and LRU eviction.
 */
import type { StoredResult } from './delegation-types.js';
/**
 * Statistics about the delegation store.
 */
export interface DelegatedResultStoreStats {
    /** Number of currently stored results */
    size: number;
    /** Maximum capacity (LRU limit) */
    maxSize: number;
    /** Total results stored since creation */
    totalStored: number;
    /** Total results evicted (TTL or LRU) */
    totalEvicted: number;
    /** Total results successfully recalled */
    totalRecalled: number;
}
/**
 * In-memory store for delegated results with TTL expiration and LRU eviction.
 */
export declare class DelegatedResultStore {
    private readonly results;
    private readonly maxSize;
    private readonly defaultTTL;
    private counter;
    private totalStored;
    private totalEvicted;
    private totalRecalled;
    constructor(options?: {
        maxSize?: number;
        defaultTTL?: number;
    });
    /**
     * Generate a unique delegation ID.
     */
    generateId(): string;
    /**
     * Store a delegated result. Evicts oldest entries if at capacity.
     */
    add(result: StoredResult): void;
    /**
     * Get a stored result by ID. Returns undefined if not found or expired.
     */
    get(id: string): StoredResult | undefined;
    /**
     * Remove all expired entries.
     */
    cleanup(): void;
    /**
     * Clear all stored results.
     */
    clear(): void;
    /**
     * Get the default TTL for this store.
     */
    getDefaultTTL(): number;
    /**
     * Get store statistics.
     */
    getStats(): DelegatedResultStoreStats;
}