import { DataInfo, DataProvider, DataStorage } from '@narik/infrastructure';
import { Observable } from 'rxjs';
import { Injector } from '@angular/core';
import { NarikBaseDataStorage, StorageModel } from '../../base/narik-base-data-storage';
import * as i0 from "@angular/core";
export declare class SessionStorageDataProvider extends NarikBaseDataStorage implements DataProvider, DataStorage {
    key: string;
    order: number;
    supportAdd: boolean;
    belongsInChain: boolean;
    constructor(injector: Injector, validityLen: number);
    getStorageModel<T>(dataInfo: DataInfo): Observable<StorageModel>;
    isDataProviderFor(dataInfo: DataInfo): boolean;
    addItem(dataItmes: {
        dataInfo: DataInfo;
        data: any;
    }[]): Observable<any>;
    clear(): Observable<any>;
    removeItems(items: DataInfo[]): Observable<any>;
    static ɵfac: i0.ɵɵFactoryDeclaration<SessionStorageDataProvider, [null, { optional: true; }]>;
    static ɵprov: i0.ɵɵInjectableDeclaration<SessionStorageDataProvider>;
}