import { IDataProvider, FilterCallback, MapCallback } from "./DataProvider";
export declare class ItemsStore implements IDataProvider {
    protected itemsById: {
        [id: number]: object;
    };
    protected items: [number, object][];
    constructor(items: [number, object][]);
    get(id: string | number): any;
    filter(precicate: FilterCallback): any;
    map(iterator: MapCallback): any[];
    readonly length: number;
}
export declare class MutableItemsStore extends ItemsStore {
    private lastItemId;
    constructor(items: object[]);
    add(item: object): number;
}