/**
 * Add class names to an element.
 * @link https://js-toolkit.studiometa.dev/utils/css/addClass.html
*/
export declare function add(element: Element | Element[] | NodeListOf<Element>, classNames: string | string[]): void;
/**
 * Remove class names from an element.
 * @link https://js-toolkit.studiometa.dev/utils/css/removeClass.html
*/
export declare function remove(element: Element | Element[] | NodeListOf<Element>, classNames: string | string[]): void;
/**
 * Toggle class names from an element.
 * @link https://js-toolkit.studiometa.dev/utils/css/toggleClass.html
*/
export declare function toggle(element: Element | Element[] | NodeListOf<Element>, classNames: string | string[], force?: boolean): void;