/**
 * CSS class manipulation utilities.
 *
 * Allows manipulating with CSS classes with the following set of sub-features:
 * - JQuery-like enumeration - you can pass multiple tokens separated by space
 * - safe checks - empty or falsy token sting will be ignored without throwing an error
 * - inversion syntax - tokens that start from '!' will be processed with inverted action
 * (e.g. addCls(el, '!class') - will remove 'class' from the element, while removeCls(el, '!class') adds 'class' to the element)
 * - class locks - you can manipulate with classes using `locker` option that takes into account the modification initiator.
 * That means the class added in 'locker' mode will not be removed until all initiators that requested add class have requested its removal.
 * */
export declare abstract class CSSClassUtils {
    /** Splitting passed token string into CSS class names array. */
    static splitTokens(tokenString: string | null | undefined): string[];
    /**
     * Add all classes from the class token string to the element.
     * @see CSSClassUtils
     * */
    static add(els: Element | Element[], cls: string | null | undefined, locker?: Element): void;
    /**
     * Remove all classes from the class token string to the element.
     * @see CSSClassUtils
     * */
    static remove(els: Element | Element[], cls: string | null | undefined, locker?: Element): void;
    /**
     * Toggle all classes from the class token string on the element to the passed state.
     * @see CSSClassUtils
     * */
    static toggle(els: Element | Element[], cls: string | null | undefined, state: boolean, locker?: Element): void;
    /**
     * Check if all class from token string matches to the element or elements.
     * @see CSSClassUtils
     * */
    static has(els: Element | Element[], cls: string): boolean;
    /** Remove all lockers for the element or passed element className */
    static unlock(els: Element | Element[], className?: string): void;
}