/// <reference types="node" />
import { InternalFillImageOptions } from './models/base';
export declare function numberArrayToString(array: number[]): string;
export declare function imageToByteArray(imageBuffer: Buffer, sourceOptions: InternalFillImageOptions, destPadding: number, transformCoordinates: (x: number, y: number) => {
    x: number;
    y: number;
}, colorMode: 'bgr' | 'rgba', imageSize: number): Buffer;
export declare const BMP_HEADER_LENGTH = 54;
export declare function writeBMPHeader(buf: Buffer, iconSize: number, iconBytes: number, imagePPM: number): void;