import { BasicEnumerable } from './BasicEnumerable';
import { Comparer, IEnumerableFactory, IOrderedEnumerable } from '../types';
/**
 * Represents a sorted sequence.
 * @typeparam TSource The type of the elements of the sequence.
 */
export declare class OrderedEnumerable<TSource> extends BasicEnumerable<TSource> implements IOrderedEnumerable<TSource> {
    private readonly orderedPairs;
    constructor(factory: IEnumerableFactory, orderedPairs: () => Generator<TSource[]>);
    /**
     * Performs a subsequent ordering of the elements in a sequence in ascending order.
     * @typeparam TKey The type of the key returned by keySelector.
     * @param keySelector A function to extract a key from each element.
     * @returns An IOrderedEnumerable<TSource> whose elements are sorted according to a key.
     */
    thenBy<TKey>(keySelector: (item: TSource) => TKey): IOrderedEnumerable<TSource>;
    /**
     * Performs a subsequent ordering of the elements in a sequence in ascending order.
     * @typeparam TKey The type of the key returned by keySelector.
     * @param keySelector A function to extract a key from each element.
     * @param comparer An Comparer<T> to compare keys.
     * @returns An IOrderedEnumerable<TSource> whose elements are sorted according to a key.
     */
    thenBy<TKey>(keySelector: (item: TSource) => TKey, comparer: Comparer<TKey>): IOrderedEnumerable<TSource>;
    /**
     * Performs a subsequent ordering of the elements in a sequence in descending order.
     * @typeparam TKey The type of the key returned by keySelector.
     * @param keySelector A function to extract a key from each element.
     * @returns An IOrderedEnumerable<TSource> whose elements are sorted according to a key.
     */
    thenByDescending<TKey>(keySelector: (item: TSource) => TKey): IOrderedEnumerable<TSource>;
    /**
     * Performs a subsequent ordering of the elements in a sequence in descending order.
     * @typeparam TKey The type of the key returned by keySelector.
     * @param keySelector A function to extract a key from each element.
     * @param comparer An Comparer<T> to compare keys.
     * @returns An IOrderedEnumerable<TSource> whose elements are sorted according to a key.
     */
    thenByDescending<TKey>(keySelector: (item: TSource) => TKey, comparer: Comparer<TKey>): IOrderedEnumerable<TSource>;
}
//# sourceMappingURL=OrderedEnumerable.d.ts.map