/***
 *
 * @param red - number value from 0 to 255
 * @param green - number value from 0 to 255
 * @param blue - number value from 0 to 255
 * @param opacity - number value from 0 to 255
 * @returns pixel in hex format: opacity, red, green, blue. For example: "0xff0000ff" - blue pixel with no opacity
 */
export declare const convertToPixel: (red: number, green: number, blue: number, opacity: number) => number;