import { ISourceCache } from './ISourceCache';
import { ISourceUpdater } from './ISourceUpdater';
import { Observable } from 'rxjs';
import { Change } from './Change';
import { IChangeSet } from './IChangeSet';
/**
 * An observable cache which exposes an update API.  Used at the root
 * of all observable chains
 * @typeparam TObject The type of the object
 * @typeparam TKey The type of the key
 */
export declare class SourceCache<TObject, TKey> implements ISourceCache<TObject, TKey> {
    private readonly _innerCache;
    /**
     * Initializes a new instance of the <see cref="SourceCache{TObject, TKey}"/> class.
     * @param keySelector The key selector.
     * @param deepEqual Use deep equal comparisons
     */
    constructor(keySelector: (value: TObject) => TKey, deepEqual?: boolean);
    [Symbol.toStringTag]: 'ObservableCache';
    edit(updateAction: (updater: ISourceUpdater<TObject, TKey>) => void): void;
    watch(key: TKey): Observable<Change<TObject, TKey>>;
    connect(predicate?: ((object: TObject) => boolean) | undefined): Observable<IChangeSet<TObject, TKey>>;
    preview(predicate?: ((object: TObject) => boolean) | undefined): Observable<IChangeSet<TObject, TKey>>;
    get countChanged(): Observable<number>;
    keys(): IterableIterator<TKey>;
    values(): IterableIterator<TObject>;
    entries(): IterableIterator<[TKey, TObject]>;
    lookup(key: TKey): TObject | undefined;
    get size(): number;
    [Symbol.iterator](): IterableIterator<[TKey, TObject]>;
    dispose(): void;
    getKey(item: TObject): NonNullable<TKey>;
}
export declare function updateable<TObject, TKey>(sourceCache: ISourceCache<TObject, TKey>): ISourceCache<TObject, TKey> & ISourceUpdater<TObject, TKey>;