export declare class DataStoreService {
    protected store: any;
    constructor();
    readonly local: any;
    readonly session: any;
    protected getItem(type: string, key: string): Promise<string>;
    protected setItem(type: string, key: string, value: string): Promise<string>;
    protected removeItem(type: string, key: string): Promise<string>;
    protected keys(type: string): Promise<any[]>;
}