import { AbortablePromise } from 'better-promises';
import { InvokeCustomMethodOptions } from '@telegram-apps/bridge';
/**
 * Signal indicating if the Cloud Storage is supported.
 */
export declare const isSupported: import('@telegram-apps/signals').Computed<boolean>;
/**
 * Deletes specified key or keys from the cloud storage.
 * @param keyOrKeys - key or keys to delete.
 * @param options - request execution options.
 * @since Mini Apps v6.9
 * @throws {FunctionNotAvailableError} The environment is unknown
 * @throws {FunctionNotAvailableError} The SDK is not initialized
 * @throws {FunctionNotAvailableError} The function is not supported
 * @example Deleting a single key
 * if (deleteItem.isAvailable()) {
 *   await deleteItem('my-key');
 * }
 * @example Deleting multiple keys
 * if (deleteItem.isAvailable()) {
 *   await deleteItem(['key1', 'key2']);
 * }
 */
export declare const deleteItem: import('../../wrappers/wrapSafe.js').SafeWrapped<(keyOrKeys: string | string[], options?: InvokeCustomMethodOptions) => AbortablePromise<void>, true, never>;
/**
 * Gets multiple keys' values from the cloud storage.
 * @param keys - keys list.
 * @param options - request execution options.
 * @returns Map, where a key is one of the specified in the `keys` argument,
 * and a value is a corresponding storage value.
 * @since Mini Apps v6.9
 * @throws {FunctionNotAvailableError} The environment is unknown
 * @throws {FunctionNotAvailableError} The SDK is not initialized
 * @throws {FunctionNotAvailableError} The function is not supported
 * @example
 * if (deleteItem.isAvailable()) {
 *   const { key1, key2 } = await getItem(['key1', 'key2']);
 * }
 */
declare function _getItem<K extends string>(keys: K[], options?: InvokeCustomMethodOptions): AbortablePromise<Record<K, string>>;
/**
 * Gets a single key value from the cloud storage.
 * @param key - cloud storage key.
 * @param options - request execution options.
 * @return Value of the specified key. If the key was not created previously,
 * the function will return an empty string.
 * @since Mini Apps v6.9
 * @throws {FunctionNotAvailableError} The environment is unknown
 * @throws {FunctionNotAvailableError} The SDK is not initialized
 * @throws {FunctionNotAvailableError} The function is not supported
 * @example
 * if (getItem.isAvailable()) {
 *   const keyValue = await getItem('my-key');
 * }
 */
declare function _getItem(key: string, options?: InvokeCustomMethodOptions): AbortablePromise<string>;
export declare const getItem: import('../../wrappers/wrapSafe.js').SafeWrapped<typeof _getItem, true, never>;
/**
 * Returns a list of all keys presented in the cloud storage.
 * @param options - request execution options.
 * @since Mini Apps v6.9
 * @throws {FunctionNotAvailableError} The environment is unknown
 * @throws {FunctionNotAvailableError} The SDK is not initialized
 * @throws {FunctionNotAvailableError} The function is not supported
 * @example
 * if (getKeys.isAvailable()) {
 *   const keysArray = await getKeys();
 * }
 */
export declare const getKeys: import('../../wrappers/wrapSafe.js').SafeWrapped<(options?: InvokeCustomMethodOptions) => AbortablePromise<string[]>, true, never>;
/**
 * Saves the specified value by a key.
 * @param key - storage key.
 * @param value - storage value.
 * @param options - request execution options.
 * @since Mini Apps v6.9
 * @throws {FunctionNotAvailableError} The environment is unknown
 * @throws {FunctionNotAvailableError} The SDK is not initialized
 * @throws {FunctionNotAvailableError} The function is not supported
 * @example
 * if (setItem.isAvailable()) {
 *   await setItem('key', 'value');
 * }
 */
export declare const setItem: import('../../wrappers/wrapSafe.js').SafeWrapped<(key: string, value: string, options?: InvokeCustomMethodOptions) => AbortablePromise<void>, true, never>;
/**
 * Clears the cloud storage.
 * @param options - additional options.
 * @since Mini Apps v6.9
 * @throws {FunctionNotAvailableError} The environment is unknown
 * @throws {FunctionNotAvailableError} The SDK is not initialized
 * @throws {FunctionNotAvailableError} The function is not supported
 * @example
 * if (clear.isAvailable()) {
 *   await clear();
 * }
 */
export declare const clear: import('../../wrappers/wrapSafe.js').SafeWrapped<(options?: InvokeCustomMethodOptions) => AbortablePromise<void>, true, never>;
export {};