/**
 *  BOM 模块
 *  @module $ui/utils/bom
 */
/**
 * 浏览器全屏
 * @param {HTMLElement} [el=document] 全屏元素
 */
export declare function fullScreen(el: any): void;
/**
 * 退出全屏
 */
export declare function exitFullScreen(): void;
/**
 * 浏览器当前是否全屏
 * @return {*|boolean}
 */
export declare function isFullScreen(): any;
export declare function addClass(el: any, cls: any): void;
export declare function removeClass(el: any, cls: any): void;