import { Buffer } from 'node:buffer';
/**
 * Processes a PNG buffer synchronously with the specified filtering
 * @param inBuffer - Input buffer containing PNG data
 * @param bitmapInfo - Information about the bitmap format
 * @returns Processed buffer with filtering applied
 */
export declare function processSync(inBuffer: Buffer, bitmapInfo: BitmapInfo): Buffer;
declare interface BitmapInfo {
  width: number
  height: number
  interlace: boolean
  bpp: number
  depth: 1 | 2 | 4 | 8 | 16
}
// Default export for backward compatibility
export default processSync;