import { IndexedSelector } from '../IndexedSelector';
import { EqualityComparer } from '../blinq';
declare module '../Enumerable' {
    interface Enumerable<T> {
        fullOuterGroupJoin<T, TRight, TKey, TOut>(this: Enumerable<T>, rightSeq: Iterable<TRight>, leftKeySelector: IndexedSelector<T, TKey>, rightKeySelector: IndexedSelector<TRight, TKey>, selector: (o: Enumerable<T>, v: Enumerable<TRight>, k: TKey) => TOut, equalityComparer?: EqualityComparer<TKey>): Enumerable<TOut>;
    }
}