/**
 * @fileoverview Type-safe local storage utility functions
 * Provides methods for managing data in localStorage with proper error handling
 */
/**
 * Interface for key-value pair storage operations
 */
interface StorageItem {
    key: string;
    value: unknown;
}
/**
 * Gets an item from localStorage with type safety
 * @param key - Storage key
 * @returns Parsed value or null if not found
 */
export declare function getLocalStorageItem<T>(key: string): T | null;
/**
 * Sets multiple items in localStorage
 * @param items - Array of key-value pairs to store
 */
export declare function setLocalStorageItems(items: StorageItem[]): void;
/**
 * Removes multiple items from localStorage
 * @param keys - Array of keys to remove
 */
export declare function removeLocalStorageItems(keys: string[]): void;
/**
 * Clears all items from localStorage
 */
export declare function clearLocalStorage(): void;
/**
 * Gets the size of localStorage in bytes
 * @returns Size in bytes or 0 if not available
 */
export declare function getLocalStorageSize(): number;
/**
 * Checks if localStorage is available
 * @returns boolean indicating if localStorage is available
 */
export declare function isLocalStorageAvailable(): boolean;
/**
 * Gets all keys in localStorage
 * @returns Array of localStorage keys
 */
export declare function getLocalStorageKeys(): string[];
/**
 * Checks if a key exists in localStorage
 * @param key - Key to check
 * @returns boolean indicating if key exists
 */
export declare function hasLocalStorageItem(key: string): boolean;
export {};