declare namespace Util {

    const isMobile: boolean;

    function pushArrayItems(ary: any[]|null, items: any[]|null): any[]|null;

    function insertEmptyItems(ary: any[]|null, at: number, chunkSize: number): void;

    function cycleArray(ary: any[]|null, numItems: number): any[]|null;

    function closestElement(elem: Element|Node|undefined|null, classStr: string): Element|null;

}

declare function item(ary: any[]|null, items: any[]|null): any[]|null;

export default Util;
export { Util };