export declare function queryCheckedElement(parentEl: HTMLElement | null): HTMLElement | null;
export declare function valueComparator<T>(value: T | T[] | undefined, currentValue: T, comparator?: string | ((a: T, b: T) => boolean)): boolean;
export declare function compare<T>(value?: T, currentValue?: T, comparator?: string | ((a: T, b: T) => boolean)): boolean;