/**
 * Checks if localStorage is available and accessible.
 * In some environments (like iframes with different origins or blocked cookies),
 * even accessing window.localStorage can throw an "Access is denied" error.
 */
export declare const isLocalStorageAvailable: () => boolean;
/**
 * Safely gets an item from localStorage.
 */
export declare const safeGetItem: (key: string) => string | null;
/**
 * Safely sets an item in localStorage.
 */
export declare const safeSetItem: (key: string, value: string) => void;
/**
 * Safely removes an item from localStorage.
 */
export declare const safeRemoveItem: (key: string) => void;