/**
 * Adjusts a HEX color's brightness, supporting 3-character (#RGB), 6-character (#RRGGBB),
 * and 8-character (#RRGGBBAA) formats.
 * @param color - The HEX color to adjust (e.g., "#RGB", "#RRGGBB", "#RRGGBBAA").
 * @param weight - The amount to adjust the brightness (-100 to 100).
 *                 Positive values make the color brighter, negative values make it darker.
 * @returns The adjusted HEX color.
 */
declare function shade(color: string, weight: number): string;

export { shade };