import type { FirebaseApp } from '@react-native-firebase/app';
import './types/internal';
import type { EmulatorMockTokenOptions, FirebaseStorage, FullMetadata, ListOptions, ListResult, SettableMetadata, StorageReference, Task, UploadMetadata, UploadResult, UploadTask } from './types/storage';
export declare const SDK_VERSION = "26.2.0";
export declare function getStorage(app?: FirebaseApp, bucketUrl?: string): FirebaseStorage;
export type * from './types/storage';
export { StringFormat, TaskEvent, TaskState } from './StorageStatics';
/**
 * Modify this Storage instance to communicate with the Firebase Storage emulator.
 * @param storage - Storage instance.
 * @param host - emulator host (e.g. - 'localhost')
 * @param port - emulator port (e.g. -  9199)
 * @param options - `EmulatorMockTokenOptions` instance. Optional. Web only.
 * @returns {void}
 */
export declare function connectStorageEmulator(storage: FirebaseStorage, host: string, port: number, options?: EmulatorMockTokenOptions): void;
/**
 * Returns a StorageReference for the given URL or path in the default bucket.
 * @param storage - FirebaseStorage instance.
 * @param url - Optional gs:// or https:// URL, or path. If empty, returns root reference.
 * @returns {StorageReference}
 */
export declare function ref(storage: FirebaseStorage, url?: string): StorageReference;
/**
 * Returns a StorageReference for the given path, or the same reference if path is omitted.
 * @param storageRef - StorageReference instance.
 * @param path - Optional child path. If omitted, returns the same reference.
 * @returns {StorageReference}
 */
export declare function ref(storageRef: StorageReference, path?: string): StorageReference;
/**
 * Deletes the object at this reference's location.
 * @param storageRef - Storage `Reference` instance.
 * @returns {Promise<void>}
 */
export declare function deleteObject(storageRef: StorageReference): Promise<void>;
/**
 * Downloads the data at the object's location. Returns an error if the object is not found.
 * @param _storageRef - Storage `Reference` instance.
 * @param _maxDownloadSizeBytes - The maximum allowed size in bytes to retrieve. Web only.
 * @returns {Promise<Blob>}
 */
export declare function getBlob(_storageRef: StorageReference, _maxDownloadSizeBytes?: number): Promise<Blob>;
/**
 * Downloads the data at the object's location. Returns an error if the object is not found.
 * @param _storageRef - Storage `Reference` instance.
 * @param _maxDownloadSizeBytes - The maximum allowed size in bytes to retrieve. Web only.
 * @returns {Promise<ArrayBuffer>}
 */
export declare function getBytes(_storageRef: StorageReference, _maxDownloadSizeBytes?: number): Promise<ArrayBuffer>;
/**
 * Deletes the object at this reference's location.
 * @param storageRef - Storage `Reference` instance.
 * @returns {Promise<string>}
 */
export declare function getDownloadURL(storageRef: StorageReference): Promise<string>;
/**
 * Fetches metadata for the object at this location, if one exists.
 * @param storageRef - Storage `Reference` instance.
 * @returns {Promise<FullMetadata>}
 */
export declare function getMetadata(storageRef: StorageReference): Promise<FullMetadata>;
/**
 * Downloads the data at the object's location. This API is only available in Nodejs.
 * @param _storageRef - Storage `Reference` instance.
 * @param _maxDownloadSizeBytes - The maximum allowed size in bytes to retrieve. Web only.
 * @returns {NodeJS.ReadableStream;}
 */
export declare function getStream(_storageRef: StorageReference, _maxDownloadSizeBytes?: number): NodeJS.ReadableStream;
/**
 * List items (files) and prefixes (folders) under this storage reference
 * @param storageRef - Storage `Reference` instance.
 * @param options - Storage `ListOptions` instance. The options list() accepts.
 * @returns {Promise<ListResult>}
 */
export declare function list(storageRef: StorageReference, options?: ListOptions): Promise<ListResult>;
/**
 * List all items (files) and prefixes (folders) under this storage reference.
 * @param storageRef - Storage `Reference` instance.
 * @returns {Promise<ListResult>}
 */
export declare function listAll(storageRef: StorageReference): Promise<ListResult>;
/**
 * Updates the metadata for this object.
 * @param storageRef - Storage `Reference` instance.
 * @param metadata - A Storage `SettableMetadata` instance to update.
 * @returns {Promise<FullMetadata>}
 */
export declare function updateMetadata(storageRef: StorageReference, metadata: SettableMetadata): Promise<FullMetadata>;
/**
 * Uploads data to this object's location. The upload is not resumable.
 * @param _storageRef - Storage `Reference` instance.
 * @param _data - The data (Blob | Uint8Array | ArrayBuffer) to upload to the storage bucket at the reference location.
 * @param _metadata - A Storage `UploadMetadata` instance to update. Optional.
 * @returns {Promise<UploadResult>}
 */
export declare function uploadBytes(_storageRef: StorageReference, _data: Blob | Uint8Array | ArrayBuffer, _metadata?: UploadMetadata): Promise<UploadResult>;
/**
 * Uploads data to this object's location. The upload is not resumable.
 * @param storageRef - Storage `Reference` instance.
 * @param data - The data (Blob | Uint8Array | ArrayBuffer) to upload to the storage bucket at the reference location.
 * @param metadata - A Storage `UploadMetadata` instance to update. Optional.
 * @returns {UploadTask}
 */
export declare function uploadBytesResumable(storageRef: StorageReference, data: Blob | Uint8Array | ArrayBuffer, metadata?: UploadMetadata): UploadTask;
/**
 * Uploads data to this object's location. The upload is not resumable.
 * @param storageRef - Storage `Reference` instance.
 * @param data - The string to upload.
 * @param format - The format of the string to upload ('raw' | 'base64' | 'base64url' | 'data_url'). Optional.
 * @param metadata - A Storage `UploadMetadata` instance to update. Optional.
 * @returns {Task}
 */
export declare function uploadString(storageRef: StorageReference, data: string, format?: 'raw' | 'base64' | 'base64url' | 'data_url', metadata?: UploadMetadata): Task;
/**
 * Sets the maximum time in milliseconds to retry non-upload/download operations.
 *
 * @remarks React Native Firebase-specific modular helper. The firebase-js-sdk exposes this as a
 * writable property on the `FirebaseStorage` instance. **Android and iOS only.**
 */
export declare function setMaxOperationRetryTime(storage: FirebaseStorage, time: number): Promise<void>;
/**
 * Sets the maximum time in milliseconds to retry an upload if a failure occurs.
 *
 * @remarks React Native Firebase-specific modular helper. The firebase-js-sdk exposes this as a
 * writable property on the `FirebaseStorage` instance. **Android and iOS only.**
 */
export declare function setMaxUploadRetryTime(storage: FirebaseStorage, time: number): Promise<void>;
/**
 * Uploads a file from a local device path to Cloud Storage.
 *
 * @remarks React Native Firebase-specific API with **no firebase-js-sdk equivalent**. Use
 * `FilePath` from `@react-native-firebase/app` for portable device paths. **Native only**
 * — throws on Web interop.
 */
export declare function putFile(storageRef: StorageReference, filePath: string, metadata?: UploadMetadata): Task;
/**
 * Downloads a Cloud Storage object to a local device file path.
 *
 * @remarks React Native Firebase-specific API with **no firebase-js-sdk equivalent**. Use
 * `FilePath` from `@react-native-firebase/app` for portable device paths. **Native only**
 * — throws on Web interop.
 */
export declare function writeToFile(storageRef: StorageReference, filePath: string): Task;
/**
 * Sets the maximum time in milliseconds to retry a download if a failure occurs.
 *
 * @remarks React Native Firebase-specific modular helper with no direct firebase-js-sdk equivalent.
 * **Android and iOS only.**
 */
export declare function setMaxDownloadRetryTime(storage: FirebaseStorage, time: number): Promise<void>;
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