export interface Sorter<T> {
    property: Extract<keyof T, string | number | Date>;
    isDescending: boolean;
    dataType?: 'string' | 'number' | 'date';
}
export declare const sortGeneric: <T>(objX: T, objY: T, sortParams: Sorter<T>) => number;
export declare const removeNullUndefineds: <T>(obj: any, exceptProperties?: string[]) => T;
export declare const removeEmpty: <T>(o: any, exceptProperties?: string[]) => T;
export declare function getRandomItems<U>(items: U[], count: number): U[];