import { IndexedSelector } from '../IndexedSelector';
import { EqualityComparer } from '../blinq';
declare module '../Enumerable' {
    interface Enumerable<T> {
        groupAdjacent<TSource, TKey, TElement, TResult>(this: Enumerable<TSource>, keySelector: IndexedSelector<TSource, TKey>, elementSelector: IndexedSelector<TSource, TElement>, resultSelector: (key: TKey, items: Enumerable<TElement>) => TResult, equalityComparer?: EqualityComparer<TKey>): Enumerable<TResult>;
    }
}