/**
 * Decodes BlurHash image
 * @param blurHash BlurHash image string
 * @param width Output image width
 * @param height Output image height
 * @param punch Contrast adjustment
 */
export declare function decodeBlurHash(
    blurHash: string,
    width: number,
    height: number,
    punch?: number,
): Uint8ClampedArray;

/**
 * Extracts average color from BlurHash image
 * @param blurHash BlurHash image string
 * @returns Image average color in [r, g, b];
 */
export declare function getBlurHashAverageColor(
    blurHash: string,
): [number, number, number];