import { IChangeSet } from './IChangeSet';
import { ChangeSet } from './ChangeSet';
import { ArrayOrIterable } from '../util/ArrayOrIterable';
import { Change } from './Change';
import { IObservableCache } from './IObservableCache';
import { IntermediateCache } from './IntermediateCache';
import { ICacheUpdater } from './ICacheUpdater';
export declare type Group<TObject, TKey, TGroupKey> = Iterable<TObject> & {
    key: TGroupKey;
    cache: IObservableCache<TObject, TKey>;
};
export declare class ManagedGroup<TObject, TKey, TGroupKey> implements Group<TObject, TKey, TGroupKey> {
    readonly key: TGroupKey;
    private readonly _cache;
    constructor(key: TGroupKey);
    [Symbol.iterator](): IterableIterator<TObject>;
    get cache(): IntermediateCache<TObject, TKey>;
    /**
     * @internal
     */
    update(updateAction: (updater: ICacheUpdater<TObject, TKey>) => void): void;
    get size(): number;
    /**
     * @internal
     */
    getInitialUpdates(): ChangeSet<TObject, TKey>;
}
export declare class GroupChangeSet<TObject, TKey, TGroupKey> extends ChangeSet<Group<TObject, TKey, TGroupKey>, TGroupKey> implements IChangeSet<Group<TObject, TKey, TGroupKey>, TGroupKey> {
    constructor(collection?: ArrayOrIterable<Change<Group<TObject, TKey, TGroupKey>, TGroupKey>>);
}