/**
 * File Organizer MCP Server v3.4.2
 * Hash Calculator Service
 */
import fs from "fs/promises";
import type { FileWithSize, DuplicateGroup } from "../types.js";
/**
 * Hash Calculator Service - file hashing and duplicate detection
 */
export declare class HashCalculatorService {
    private readonly maxFileSize;
    constructor(maxFileSize?: number);
    /**
     * Calculate SHA-256 hash of a file
     * Accepts path string or FileHandle
     */
    calculateHash(fileInput: string | fs.FileHandle, options?: {
        timeoutMs?: number;
    }): Promise<string>;
    /**
     * Find duplicate files based on content hash
     */
    findDuplicates(files: FileWithSize[], options?: {
        timeoutMs?: number;
    }): Promise<DuplicateGroup[]>;
}
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