import { IChangeSet } from './IChangeSet';
import { ICacheUpdater } from './ICacheUpdater';
import { ISourceUpdater } from './ISourceUpdater';
import { ChangeSet } from './ChangeSet';
export declare class ReaderWriter<TObject, TKey> {
    private readonly _keySelector?;
    private _data;
    private _activeUpdater?;
    private readonly _deepEqual;
    constructor(deepEqual: boolean);
    constructor(keySelector?: (object: TObject) => TKey, deepEqual?: boolean);
    write(changes: IChangeSet<TObject, TKey> | ((updater: ICacheUpdater<TObject, TKey>) => void) | ((updater: ISourceUpdater<TObject, TKey>) => void), previewHandler: ((changes: ChangeSet<TObject, TKey>) => void) | undefined, collectChanges: boolean): ChangeSet<TObject, TKey>;
    private doUpdate;
    /**
     * @internal
     **/
    writeNested(updateAction: ((updater: ICacheUpdater<TObject, TKey>) => void) | ((updater: ISourceUpdater<TObject, TKey>) => void)): void;
    getInitialUpdates(filter?: (value: TObject) => boolean): ChangeSet<TObject, TKey>;
    get keys(): TKey[];
    get entries(): [TKey, TObject][];
    get values(): TObject[];
    lookup(key: TKey): TObject | undefined;
    get size(): number;
}