/**
 * @param ctx - The canvas rendering context.
 * @param x - The x-coordinate of the top-left corner of the rectangle.
 * @param y - The y-coordinate of the top-left corner of the rectangle.
 * @param width - The width of the rectangle.
 * @param height - The height of the rectangle.
 * @param radius - The radius of the rounded corners.
 */
export declare function drawRoundRect(ctx: CanvasRenderingContext2D, x: number, y: number, width: number, height: number, radius: number): void;