import type { Buffer } from 'node:buffer';
/**
 * Implementation of CRC-32 calculation for PNG chunks
 * Uses a pre-computed lookup table for better performance
 */
// Pre-compute CRC lookup table
declare const CRC_TABLE: Uint32Array;
// Constants for CRC calculation
export declare const CRC_CONSTANTS: {
  /** Initial CRC value */
  INITIAL_CRC: -1;
  /** Final XOR value for CRC */
  FINAL_XOR: -1;
  /** CRC polynomial value */
  POLYNOMIAL: unknown
};
/**
 * Class for calculating CRC-32 values incrementally
 */
export declare class CrcCalculator {
  constructor();
  write(data: Buffer | Uint8Array): boolean;
  crc32(): number;
  static crc32(buf: Buffer | Uint8Array): number;
}
// Export the pre-computed table if needed
export { CRC_TABLE };
// Default export for backward compatibility
export default CrcCalculator;