import { DecoderFn, EncoderFn, ImageCallback } from '@jimp/core'; interface JpegClass { MIME_JPEG: 'image/jpeg'; _quality: number; quality: (n: number, cb?: ImageCallback) => this; } interface Jpeg { mime: { 'image/jpeg': string[] }, constants: { 'image/jpeg': string } encoders: { 'image/jpeg': EncoderFn } decoders: { 'image/jpeg': DecoderFn } class: JpegClass } export default function(): Jpeg;