import { Comparer, EqualityComparer } from '../types';
export declare function getIterableGenerator<TSource>(src: Iterable<TSource>): () => Generator<TSource>;
export declare function getKeySelectorAndComparer<TSource, TSecond, TKey>(overrideKeySelector: ((item: TSource) => TKey) | null, others: (Iterable<TSecond> | ((item: TSource) => TKey) | EqualityComparer<TKey>)[]): [others: Iterable<TSecond>[], keySelector: (item: TSource) => TKey, equalityComparer?: EqualityComparer<TKey>];
export declare function toKeyMap<TKey, T>(src: Iterable<T>, keySelector: (item: T) => TKey): Map<TKey, T[]>;
export declare function orderByGenerator<TSource, TKey>(src: Iterable<TSource>, ascending: boolean, selector: (item: TSource) => TKey, comparer?: Comparer<TKey>): Generator<TSource[]>;
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