/**
 * @title hasClass
 * @description 查询元素是否存在某个class
 * @param {HTMLElement} element
 * @param {string|string[]} className
 * @param {boolean} [strict=false] true: 要 className 全部符合
 * @returns {boolean}
 */
export declare function hasClass(element: HTMLElement, className: string | string[], strict?: boolean): boolean;
/**
 * @title addClass
 * @description 给某个元素添加class元素
 * @param {HTMLElement element
 * @param {string} className
 * @returns {boolean}
 */
export declare function addClass(element: HTMLElement, className: string | string[]): boolean;
/**
 * @title removeClass
 * @description 删除指定class
 * @param {HTMLElement} element
 * @param {string|string[]} className
 * @returns {boolean}
 */
export declare function removeClass(element: HTMLElement, className: string | string[]): boolean;
/**
 * @title clearClass
 * @description 清空 class
 * @returns {boolean}
 */
export declare function clearClass(element: HTMLElement): boolean;
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