import type { ResizeFit } from 'ts-images';
export declare function transform(pipeline: (image: NativeImagePipeline) => NativeImagePipeline | Promise<NativeImagePipeline>): (input: Uint8Array | Buffer | ArrayBuffer) => Promise<Buffer>;
export declare function avatar(size?: number, quality?: number): (input: Uint8Array | Buffer | ArrayBuffer) => Promise<Buffer>;
export declare function resize(width: number, height: number, fit?: ResizeFit): (input: Uint8Array | Buffer | ArrayBuffer) => Promise<Buffer>;
export declare function stripMetadata(format?: NativeImageFormat): (input: Uint8Array | Buffer | ArrayBuffer) => Promise<Buffer>;
export declare interface NativeEncodeOptions { quality?: number, progressive?: boolean, lossless?: boolean, effort?: number }
export declare interface NativeResizeOptions { fit?: ResizeFit, withoutEnlargement?: boolean }
export declare interface NativeImagePipeline {
  resize: (width?: number, height?: number, options?: NativeResizeOptions) => NativeImagePipeline
  jpeg: (options?: NativeEncodeOptions) => NativeImagePipeline
  png: (options?: NativeEncodeOptions) => NativeImagePipeline
  webp: (options?: NativeEncodeOptions) => NativeImagePipeline
  avif: (options?: NativeEncodeOptions) => NativeImagePipeline
  rotate: (degrees?: number) => NativeImagePipeline
  blur: (sigma?: number) => NativeImagePipeline
  withMetadata: () => NativeImagePipeline
  toBuffer: () => Promise<Buffer>
}
export type NativeImageFormat = 'jpeg' | 'png' | 'webp' | 'avif';
declare class Pipeline implements NativeImagePipeline {
  constructor(input: Uint8Array);
  resize(width?: number, height?: number, options?: NativeResizeOptions): NativeImagePipeline;
  jpeg(options?: NativeEncodeOptions): NativeImagePipeline;
  png(options?: NativeEncodeOptions): NativeImagePipeline;
  webp(options?: NativeEncodeOptions): NativeImagePipeline;
  avif(options?: NativeEncodeOptions): NativeImagePipeline;
  rotate(degrees?: number): NativeImagePipeline;
  blur(sigma?: number): NativeImagePipeline;
  withMetadata(): NativeImagePipeline;
  toBuffer(): Promise<Buffer>;
}