interface Comparator<T> {
    (a: T, b: T): number;
    reversed(): Comparator<T>;
    then(compare: (a: T, b: T) => number): Comparator<T>;
    thenDescending(compare: (a: T, b: T) => number): Comparator<T>;
    thenBy(selector: (value: T) => any): Comparator<T>;
    thenByDescending(selector: (value: T) => any): Comparator<T>;
}
export default Comparator;
export declare function compare<T>(comparison: (a: T, b: T) => number): Comparator<T>;