import { BasicEnumerable } from './BasicEnumerable';
import { IEnumerableFactory, IGrouping } from '../types';
/**
 * Represents a collection of objects that have a common key.
 * @typeparam TKey The type of the key.
 * @typeparam TSource The type of the values.
 */
export declare class Grouping<TKey, TSource> extends BasicEnumerable<TSource> implements IGrouping<TKey, TSource> {
    /**
     * Gets the key of the IGrouping<TKey, TSource>.
     */
    readonly key: TKey;
    constructor(factory: IEnumerableFactory, key: TKey, src: () => Generator<TSource>);
}
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