import type { Buffer } from 'node:buffer';
import type { DecodeOptions } from './decode-budget';
import type { PNG } from './png';
/**
 * Synchronously reads a PNG buffer and returns the decoded image data
 * @param buffer The PNG file data as a buffer
 * @param options Optional configuration for reading
 * @returns Decoded PNG data including dimensions and pixel data
 */
export declare function read(buffer: Buffer, options?: PNGSyncOptions): PNGReadResult;
/**
 * Synchronously encodes PNG data into a buffer
 * @param png The PNG instance or data to encode
 * @param options Optional configuration for writing
 * @returns Encoded PNG data as a buffer
 */
export declare function write(png: PNG | PNGReadResult, options?: PNGSyncOptions): Buffer;
declare const PNGSync: { write: typeof write, read: typeof read };
declare interface PNGSyncOptions extends DecodeOptions {
  skipRescale?: boolean
  checkCRC?: boolean
  deflateChunkSize?: number
  deflateLevel?: number
  deflateStrategy?: number
  inputHasAlpha?: boolean
  bitDepth?: 8 | 16
  colorType?: number
  inputColorType?: number
}
declare interface PNGReadResult {
  width: number
  height: number
  data: Buffer
  gamma?: number
}
export default PNGSync;