import { IterableX } from '../iterable';
export declare function memoize<TSource>(source: Iterable<TSource>, readerCount?: number): IterableX<TSource>;
export declare function memoize<TSource, TResult>(source: Iterable<TSource>, readerCount?: number, selector?: (value: Iterable<TSource>) => Iterable<TResult>): IterableX<TResult>;