export declare function getValue(key: string): string | null;
export declare function setValue(key: string, value: string): void;
export interface StoredItemMeta {
    ckStoreKey: string;
    timestamp: string;
}
export type StoredItem<T> = T & StoredItemMeta;
export declare function save<T>(storageKey: string, data: StoredItem<T>[]): StoredItem<T>[];
export declare function get<T>(storageKey: string): StoredItem<T>[];
export declare function add<T>(storageKey: string, item: T): StoredItem<T>[];
export declare function remove<T>(storageKey: string, item: StoredItem<T>): StoredItem<T>[];
export declare function clear<T>(storageKey: string): StoredItem<T>[];
/**
 * Creates a typed storage instance for a specific key and data type.
 * Provides better Dev experience by not requiring the generic type on each call.
 *
 * @example
 * const walletStorage = createStorage<{ address: string }>('recent-wallets')
 * walletStorage.add({ address: '0x...' })
 * const wallets = walletStorage.get()
 */
export declare function createStorage<T>(storageKey: string): {
    get: () => StoredItem<T>[];
    save: (data: StoredItem<T>[]) => StoredItem<T>[];
    add: (item: T) => StoredItem<T>[];
    remove: (item: StoredItem<T>) => StoredItem<T>[];
    clear: () => StoredItem<T>[];
};