import gm from 'gm';
import fs from 'fs';
import { BufferResponse, ToBase64Response, WriteImageResponse } from './types/convertResponse';
import { Options } from './types/options';
export declare class Graphics {
    private quality;
    private format;
    private width;
    private height;
    private preserveAspectRatio;
    private density;
    private savePath;
    private saveFilename;
    private compression;
    private units;
    private gm;
    generateValidFilename(page?: number): string;
    gmBaseCommand(stream: fs.ReadStream, filename: string): gm.State;
    toBase64(stream: fs.ReadStream, page?: number): Promise<ToBase64Response>;
    toBuffer(stream: fs.ReadStream, page?: number): Promise<BufferResponse>;
    writeImage(stream: fs.ReadStream, page?: number): Promise<WriteImageResponse>;
    identify(filepath: string | fs.ReadStream, argument?: string): Promise<gm.ImageInfo | string>;
    setQuality(quality: number): Graphics;
    setFormat(format: string): Graphics;
    setSize(width: number, height?: number): Graphics;
    setPreserveAspectRatio(preserveAspectRatio: boolean): Graphics;
    setDensity(density: number): Graphics;
    setSavePath(savePath: string): Graphics;
    setSaveFilename(filename: string): Graphics;
    setUnits(units: 'Undefined' | 'PixelsPerInch' | 'PixelsPerCentimeter'): Graphics;
    setCompression(compression: string): Graphics;
    setGMClass(gmClass: string | boolean): Graphics;
    getOptions(): Options;
}