declare class Classes {
    el: Element;
    list: Element['classList'];
    constructor(el: Element);
    /**
     * Add class `name` if not already present.
     */
    add(name: string): this;
    /**
     * Remove class `name` when present, or
     * pass a regular expression to remove
     * any which match.
     */
    remove(name: string | RegExp): this;
    /**
     * Toggle class `name`, can force state via `force`.
     *
     * For browsers that support classList, but do not support `force` yet,
     * the mistake will be detected and corrected.
     */
    toggle(name: string, force?: boolean): this;
    /**
     * Return an array of classes.
     */
    array(): string[];
    /**
     * Check if class `name` is present.
     */
    contains(name: string): boolean;
    /**
     * aka contains
     */
    has(name: string): boolean;
    /**
     * Remove all classes matching `re`.
     */
    private removeMatching;
}
/**
 * Wrap `el` in a `ClassList`.
 */
export declare function classes(el: Element): Classes;
export declare function hasClass(el: Element | null | undefined, className: string): boolean;
export declare function addClass(el: Element | null | undefined, className: string): void;
export declare function removeClass(el: Element | null | undefined, className: string): void;
export {};