export declare class CookieStorage {
    static getCookieValue(name: string, cookieString: string): string | undefined;
    static get<T>(key: string, defaultValue: T): T;
    static set<T>(key: string, value: T, days?: number): void;
    static remove(key: string): void;
    static removeItems(keys: string[]): void;
    static clear(): void;
}