import { Buffer } from 'node:buffer';
import type { PackerOptions } from './packer';
/**
 * Synchronously packs PNG data into a buffer
 * @param metaData - The PNG metadata and pixel data
 * @param options - Packer options
 * @returns Packed PNG data as a buffer
 * @throws {Error} If sync capability is not available or if compression fails
 */
export declare function packSync(metaData: PNGMetaData, options?: PackerOptions): Buffer;
// Check if we have synchronous zlib support
declare interface PNGMetaData {
  width: number
  height: number
  data: Buffer
  gamma?: number
}
// Default export for backward compatibility
export default packSync;