import { BaseInterface } from '../BaseInterface';
import { DateTimeCurrentFactory } from 'md-library-test-first-version';
export declare class Variable implements BaseInterface {
    static readonly INFINITY_LIFETIME: number;
    static readonly DEFAULT_LIFETIME: number;
    private dateTimeCurrentFactory;
    private keys;
    private tagsTimestamp;
    private tagsKeys;
    constructor(dateTimeCurrentFactory: DateTimeCurrentFactory);
    has(key: string): boolean;
    set(key: string, value: any, lifeTime?: number, tags?: any[]): void;
    get(key: string): any;
    clear(): void;
    getByTags(tags: any[]): object;
    remove(key: string): void;
    removeByTag(tag: string): void;
    removeByTags(tags: any[]): void;
    removeMulti(keys: any[]): void;
    private arrayUnique(array);
}