interface FileHashCache {
    version: string;
    timestamp: string;
    hashes: Record<string, string>;
}
export declare class FileHashService {
    private logger;
    private static instance;
    private readonly CACHE_VERSION;
    private constructor();
    static getInstance(): FileHashService;
    calculateFileHash(filePath: string): Promise<string>;
    loadHashCache(cacheDir: string): Promise<FileHashCache | null>;
    saveHashCache(cacheDir: string, hashes: Record<string, string>): Promise<void>;
    getChangedFiles(projectPath: string, currentFiles: string[], cacheDir: string): Promise<{
        changed: string[];
        new: string[];
        deleted: string[];
        unchanged: string[];
    }>;
    buildHashCache(projectPath: string, files: string[], cacheDir: string): Promise<void>;
}
export {};
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