import { Bitmap } from "@jimp/types";
export declare function hashForEach<Hash extends Record<string, any>>(hash: Hash, func: (key: keyof Hash, value: Hash[keyof Hash]) => void): void;
export declare function makeTestImage(...args: string[]): Bitmap;
export declare function testImageReadableMatrix(img: Bitmap): string;
/** Helps to debug image data */
export declare function testImgToStr(testImage: Bitmap): string;
export declare function makeDonutTestImage(_: number, i: number, X: number): {
    width: number;
    height: number;
    data: number[];
};
export declare function getTestImagePath(name: "cops.jpg" | "dice.png" | "flower.gif" | "animated.gif" | "mask.png" | "panoramic.jpg" | "rgb.tiff" | "windows95.png" | "windows95.bmp" | "fillbytes.jpg" | "hands.jpg" | "hands_mx200_rp255.jpg"): string;
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