declare namespace Opti {
    class Cookie<T = string> {
        private name;
        private value;
        private expiry;
        private path;
        constructor(name: string, valueIfNotExist?: T | null, days?: number, path?: string);
        static set<T = string>(name: string, value: T, days?: number, path?: string): void;
        static get<T = string>(name: string): T | null;
        static delete(name: string, path?: string): void;
        /** Instance methods */
        update(value: T, days?: number, path?: string): void;
        delete(): void;
        getValue(): T | null;
        getName(): string;
        getExpiry(): number;
        getPath(): string;
    }
    class LocalStorage<T> {
        private name;
        private value;
        constructor(name: string, valueIfNotExist?: T | null);
        static set<T = string>(key: string, value: T): void;
        static get<T = string>(key: string): T | null;
        static remove(key: string): void;
        static clear(): void;
        /** Instance methods to interact with this specific cookie */
        update(value: T): void;
        delete(): void;
        getValue(): T | null;
        getName(): string;
    }
    class SessionStorage<T> {
        private name;
        private value;
        constructor(name: string, valueIfNotExist?: T | null);
        static set<T = string>(key: string, value: T): void;
        static get<T = string>(key: string): T | null;
        static remove(key: string): void;
        static clear(): void;
        /** Instance methods to interact with this specific cookie */
        update(value: T): void;
        delete(): void;
        getValue(): T | null;
        getName(): string;
    }
}