import { fs, IFileInfo, IStat } from './interfaces.js';
import { Abortable } from 'events';
/**
 * Functional-style wrappers kept for compatibility and composability -
 * each delegates to its imperative counterpart in helpers.ts.
 */
/**
 * Gets filesystem by its name
 *
 * @param fileSystem filesystem name ( must be defined in config file) or instance
 * @returns
 */
export declare function _fs(fileSystem: string | fs): () => fs | undefined;
/**
 *
 * Zips files to file
 *
 * @param srcPath files or dirs to zip ( absolute path, or relative to src fs ). if no provided, temp fs is used
 * @param dstName - relative to dst fs
 * @param srcFs - source provider name / instance ( temp fs when omitted )
 * @param dstFs - optional destination provider - archive lands in srcFs when omitted
 * @returns absolute path to zipped file
 */
export declare function _zip(srcPath: string[], dstName: string, srcFs?: string | fs, dstFs?: string | fs): Promise<import("./interfaces.js").IZipResult>;
export declare function _unzip(srcPath: string, dstName: string, srcFs?: string | fs): Promise<string>;
/**
 *
 * Gets file information ( extended file information eg. movie fps, coded etc.)
 *
 * @param path abs path to file
 * @returns
 */
export declare function _fileInfo(path: string): Promise<IFileInfo>;
/**
 * Calculates file hash
 * @param path  abs path to file
 * @returns
 */
export declare function _fileHash(path: string): Promise<string>;
/**
 * Checks if a path exists.
 *
 * Without a filesystem, checks an absolute local path directly. With a filesystem
 * ( name or instance ), delegates to that provider ( path relative to its base ).
 *
 * @param path path to check
 * @param fileSystem optional provider name / instance
 */
export declare function _exists(path: string, fileSystem?: string | fs): () => Promise<boolean>;
/**
 * Reads whole file content through a filesystem provider.
 *
 * @param path path relative to provider base
 * @param encoding optional encoding ( raw Buffer when omitted )
 * @param fileSystem provider name / instance, or default provider
 */
export declare function _read(path: string, encoding?: BufferEncoding, fileSystem?: string | fs): Promise<string | Buffer>;
/**
 * Writes data to a file through a filesystem provider.
 */
export declare function _write(path: string, data: string | Uint8Array, encoding?: BufferEncoding, fileSystem?: string | fs): Promise<void>;
/**
 * Appends data to a file through a filesystem provider.
 */
export declare function _append(path: string, data: string | Uint8Array, encoding?: BufferEncoding, fileSystem?: string | fs): Promise<void>;
/**
 * Copies a file / dir, optionally into another filesystem.
 *
 * @param src source path ( relative to srcFs )
 * @param dst destination path
 * @param srcFs source provider name / instance ( default provider when omitted )
 * @param dstFs optional destination provider - copy within srcFs when omitted
 */
export declare function _copy(src: string, dst: string, srcFs?: string | fs, dstFs?: string | fs): Promise<void>;
/**
 * Moves a file / dir, optionally into another filesystem.
 */
export declare function _move(src: string, dst: string, srcFs?: string | fs, dstFs?: string | fs): Promise<void>;
/**
 * Renames a file within a single filesystem.
 */
export declare function _rename(oldPath: string, newPath: string, fileSystem?: string | fs): Promise<void>;
/**
 * Removes a file or a directory ( recursively ).
 */
export declare function _rm(path: string, fileSystem?: string | fs): Promise<void>;
/**
 * Creates a directory ( recursively ).
 */
export declare function _mkdir(path: string, fileSystem?: string | fs): Promise<void>;
/**
 * Lists directory content.
 */
export declare function _list(path: string, fileSystem?: string | fs): Promise<string[]>;
/**
 * Returns file / dir statistics.
 */
export declare function _stat(path: string, fileSystem?: string | fs): Promise<IStat>;
/**
 * Checks if a path is an existing directory.
 */
export declare function _dirExists(path: string, fileSystem?: string | fs): Promise<boolean>;
/**
 * Checks if a path is a directory.
 */
export declare function _isDir(path: string, fileSystem?: string | fs): Promise<boolean>;
/**
 * Downloads a file to local storage and returns the local path.
 */
export declare function _download(path: string, fileSystem?: string | fs): Promise<string>;
/**
 * Uploads a local file into a filesystem provider.
 */
export declare function _upload(srcPath: string, dstPath?: string, fileSystem?: string | fs): Promise<void>;
/**
 * Hashes a file through a filesystem provider.
 */
export declare function _hash(path: string, algo?: string, fileSystem?: string | fs): Promise<string>;
export declare function _isOfType(path: string, extension: string): () => Promise<void>;
export declare function _isOfMimetype(path: string, mimetype: string): () => Promise<void>;
export declare function _readFile(path: string, options?: ({
    encoding?: null | undefined;
    flag?: string | undefined;
} & Abortable) | undefined | null): () => Promise<Buffer>;
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