/**
 * Template Hasher
 *
 * Hash generation utilities for template files.
 * Uses SHA-256 with 16-character slice for consistency with DatabaseClient.
 */
/**
 * Template hasher - generates content hashes
 *
 * Uses the same hashing algorithm as DatabaseClient.hashContent() for consistency:
 * - SHA-256 hash
 * - Sliced to 16 characters
 */
export declare class TemplateHasher {
    /**
     * Hash file content using SHA256 (16 char slice for consistency)
     *
     * @param content - File content to hash
     * @returns 16-character hash string
     */
    static hashContent(content: string): string;
    /**
     * Hash a file by reading its content
     *
     * @param filePath - Absolute path to the file
     * @returns 16-character hash string
     * @throws Error if file cannot be read
     */
    static hashFile(filePath: string): Promise<string>;
    /**
     * Hash a file by path with error handling
     *
     * @param filePath - Absolute path to the file
     * @returns 16-character hash string, or empty string if file doesn't exist
     */
    static hashFileSafe(filePath: string): Promise<string>;
    /**
     * Compare two hashes for equality
     *
     * @param hash1 - First hash
     * @param hash2 - Second hash
     * @returns true if hashes are identical
     */
    static compare(hash1: string, hash2: string): boolean;
    /**
     * Check if a hash is valid (non-empty, 16 characters, hexadecimal)
     *
     * @param hash - Hash string to validate
     * @returns true if hash is valid
     */
    static isValidHash(hash: string): boolean;
    /**
     * Hash multiple files in parallel
     *
     * @param filePaths - Array of absolute file paths
     * @returns Map of file path to hash
     */
    static hashFiles(filePaths: string[]): Promise<Map<string, string>>;
    /**
     * Generate a hash from a buffer
     *
     * @param buffer - Buffer to hash
     * @returns 16-character hash string
     */
    static hashBuffer(buffer: Buffer): string;
}
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