import type { ContextPackage } from '../types/context-curator.js';
export interface CacheMetadata {
    cacheKey: string;
    cachedAt: Date;
    ttlMs: number;
    sizeBytes: number;
    hitCount: number;
    lastAccessed: Date;
    version: string;
}
export interface CachedPackage {
    package: ContextPackage;
    metadata: CacheMetadata;
}
export declare class PackageCache {
    private static readonly CACHE_DIR;
    private static readonly CACHE_VERSION;
    private static readonly DEFAULT_TTL_MS;
    private static readonly MAX_CACHE_SIZE_MB;
    static initialize(): Promise<void>;
    static generateCacheKey(projectPath: string, userPrompt: string, taskType: string): string;
    static getCachedPackage(cacheKey: string): Promise<CachedPackage | null>;
    static cachePackage(cacheKey: string, contextPackage: ContextPackage, ttlMs?: number): Promise<void>;
    static removeCacheEntry(cacheKey: string): Promise<void>;
    static clearCache(): Promise<void>;
    static getCacheStats(): Promise<{
        totalEntries: number;
        totalSizeBytes: number;
        totalSizeMB: number;
        oldestEntry: Date | null;
        newestEntry: Date | null;
        totalHits: number;
    }>;
    private static enforceMaxCacheSize;
}
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