import type { IEnumerable, IEqualityComparer, SelectorKeyType } from "../../types";
export declare const groupByWithResultAndSelector: <TSource, TKey extends SelectorKeyType, TElement, TResult>(source: Iterable<TSource>, keySelector: (x: TSource) => TKey, elementSelector: (x: TSource) => TElement, resultSelector: (key: TKey, values: IEnumerable<TElement>) => TResult, comparer?: IEqualityComparer<TKey>) => IEnumerable<TResult>;