/**
 * Generate SHA256 hash of a file's contents
 */
export declare function hashFile(filePath: string): Promise<string>;
/**
 * Generate SHA256 hash of a string
 */
export declare function hashString(content: string): string;
/**
 * Generate SHA256 hash of a SQL file's parsed and cleaned AST
 */
export declare function hashSqlFile(filePath: string): Promise<string>;