interface StorageManager<T = any> {
    setItem(val: T): T;
    getItem(defaultVal?: Partial<T>): T;
    removeItem(): void;
    updateItem(val: Partial<T>): T;
}
declare function factory(type: 'sessionStorage' | 'localStorage'): {
    setItem: <T = any>(key: string, val: T) => T;
    getItem: <T_1 = any>(key: string, defaultVal?: Partial<T_1> | null) => T_1;
    removeItem: (key: string) => void;
    updateItem: <T_2 = any>(key: string, val: Partial<T_2>) => T_2;
    clear: () => void;
    generate: <T_3 = any>(key: string) => {
        setItem: (val: T_3) => T_3;
        getItem: (defaultVal?: Partial<T_3> | undefined) => T_3;
        removeItem: () => void;
        updateItem: (val: Partial<T_3>) => T_3;
    };
};

export { type StorageManager, factory };