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Diffstat (limited to 'bin/wiki/ImportarDesdeURL/node_modules/@types/node/fs.d.ts')
| -rw-r--r-- | bin/wiki/ImportarDesdeURL/node_modules/@types/node/fs.d.ts | 2297 |
1 files changed, 2297 insertions, 0 deletions
diff --git a/bin/wiki/ImportarDesdeURL/node_modules/@types/node/fs.d.ts b/bin/wiki/ImportarDesdeURL/node_modules/@types/node/fs.d.ts new file mode 100644 index 00000000..bc015cec --- /dev/null +++ b/bin/wiki/ImportarDesdeURL/node_modules/@types/node/fs.d.ts @@ -0,0 +1,2297 @@ +declare module "fs" { + import * as stream from "stream"; + import * as events from "events"; + import { URL } from "url"; + + /** + * Valid types for path values in "fs". + */ + type PathLike = string | Buffer | URL; + + type BinaryData = DataView | NodeJS.TypedArray; + class Stats { + isFile(): boolean; + isDirectory(): boolean; + isBlockDevice(): boolean; + isCharacterDevice(): boolean; + isSymbolicLink(): boolean; + isFIFO(): boolean; + isSocket(): boolean; + dev: number; + ino: number; + mode: number; + nlink: number; + uid: number; + gid: number; + rdev: number; + size: number; + blksize: number; + blocks: number; + atimeMs: number; + mtimeMs: number; + ctimeMs: number; + birthtimeMs: number; + atime: Date; + mtime: Date; + ctime: Date; + birthtime: Date; + } + + class Dirent { + isFile(): boolean; + isDirectory(): boolean; + isBlockDevice(): boolean; + isCharacterDevice(): boolean; + isSymbolicLink(): boolean; + isFIFO(): boolean; + isSocket(): boolean; + name: string; + } + + interface FSWatcher extends events.EventEmitter { + close(): void; + + /** + * events.EventEmitter + * 1. change + * 2. error + */ + addListener(event: string, listener: (...args: any[]) => void): this; + addListener(event: "change", listener: (eventType: string, filename: string | Buffer) => void): this; + addListener(event: "error", listener: (error: Error) => void): this; + + on(event: string, listener: (...args: any[]) => void): this; + on(event: "change", listener: (eventType: string, filename: string | Buffer) => void): this; + on(event: "error", listener: (error: Error) => void): this; + + once(event: string, listener: (...args: any[]) => void): this; + once(event: "change", listener: (eventType: string, filename: string | Buffer) => void): this; + once(event: "error", listener: (error: Error) => void): this; + + prependListener(event: string, listener: (...args: any[]) => void): this; + prependListener(event: "change", listener: (eventType: string, filename: string | Buffer) => void): this; + prependListener(event: "error", listener: (error: Error) => void): this; + + prependOnceListener(event: string, listener: (...args: any[]) => void): this; + prependOnceListener(event: "change", listener: (eventType: string, filename: string | Buffer) => void): this; + prependOnceListener(event: "error", listener: (error: Error) => void): this; + } + + class ReadStream extends stream.Readable { + close(): void; + bytesRead: number; + path: string | Buffer; + + /** + * events.EventEmitter + * 1. open + * 2. close + */ + addListener(event: string, listener: (...args: any[]) => void): this; + addListener(event: "open", listener: (fd: number) => void): this; + addListener(event: "close", listener: () => void): this; + + on(event: string, listener: (...args: any[]) => void): this; + on(event: "open", listener: (fd: number) => void): this; + on(event: "close", listener: () => void): this; + + once(event: string, listener: (...args: any[]) => void): this; + once(event: "open", listener: (fd: number) => void): this; + once(event: "close", listener: () => void): this; + + prependListener(event: string, listener: (...args: any[]) => void): this; + prependListener(event: "open", listener: (fd: number) => void): this; + prependListener(event: "close", listener: () => void): this; + + prependOnceListener(event: string, listener: (...args: any[]) => void): this; + prependOnceListener(event: "open", listener: (fd: number) => void): this; + prependOnceListener(event: "close", listener: () => void): this; + } + + class WriteStream extends stream.Writable { + close(): void; + bytesWritten: number; + path: string | Buffer; + + /** + * events.EventEmitter + * 1. open + * 2. close + */ + addListener(event: string, listener: (...args: any[]) => void): this; + addListener(event: "open", listener: (fd: number) => void): this; + addListener(event: "close", listener: () => void): this; + + on(event: string, listener: (...args: any[]) => void): this; + on(event: "open", listener: (fd: number) => void): this; + on(event: "close", listener: () => void): this; + + once(event: string, listener: (...args: any[]) => void): this; + once(event: "open", listener: (fd: number) => void): this; + once(event: "close", listener: () => void): this; + + prependListener(event: string, listener: (...args: any[]) => void): this; + prependListener(event: "open", listener: (fd: number) => void): this; + prependListener(event: "close", listener: () => void): this; + + prependOnceListener(event: string, listener: (...args: any[]) => void): this; + prependOnceListener(event: "open", listener: (fd: number) => void): this; + prependOnceListener(event: "close", listener: () => void): this; + } + + /** + * Asynchronous rename(2) - Change the name or location of a file or directory. + * @param oldPath A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * @param newPath A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + */ + function rename(oldPath: PathLike, newPath: PathLike, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace rename { + /** + * Asynchronous rename(2) - Change the name or location of a file or directory. + * @param oldPath A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * @param newPath A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + */ + function __promisify__(oldPath: PathLike, newPath: PathLike): Promise<void>; + } + + /** + * Synchronous rename(2) - Change the name or location of a file or directory. + * @param oldPath A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * @param newPath A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + */ + function renameSync(oldPath: PathLike, newPath: PathLike): void; + + /** + * Asynchronous truncate(2) - Truncate a file to a specified length. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param len If not specified, defaults to `0`. + */ + function truncate(path: PathLike, len: number | undefined | null, callback: (err: NodeJS.ErrnoException | null) => void): void; + + /** + * Asynchronous truncate(2) - Truncate a file to a specified length. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + */ + function truncate(path: PathLike, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace truncate { + /** + * Asynchronous truncate(2) - Truncate a file to a specified length. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param len If not specified, defaults to `0`. + */ + function __promisify__(path: PathLike, len?: number | null): Promise<void>; + } + + /** + * Synchronous truncate(2) - Truncate a file to a specified length. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param len If not specified, defaults to `0`. + */ + function truncateSync(path: PathLike, len?: number | null): void; + + /** + * Asynchronous ftruncate(2) - Truncate a file to a specified length. + * @param fd A file descriptor. + * @param len If not specified, defaults to `0`. + */ + function ftruncate(fd: number, len: number | undefined | null, callback: (err: NodeJS.ErrnoException | null) => void): void; + + /** + * Asynchronous ftruncate(2) - Truncate a file to a specified length. + * @param fd A file descriptor. + */ + function ftruncate(fd: number, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace ftruncate { + /** + * Asynchronous ftruncate(2) - Truncate a file to a specified length. + * @param fd A file descriptor. + * @param len If not specified, defaults to `0`. + */ + function __promisify__(fd: number, len?: number | null): Promise<void>; + } + + /** + * Synchronous ftruncate(2) - Truncate a file to a specified length. + * @param fd A file descriptor. + * @param len If not specified, defaults to `0`. + */ + function ftruncateSync(fd: number, len?: number | null): void; + + /** + * Asynchronous chown(2) - Change ownership of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function chown(path: PathLike, uid: number, gid: number, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace chown { + /** + * Asynchronous chown(2) - Change ownership of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function __promisify__(path: PathLike, uid: number, gid: number): Promise<void>; + } + + /** + * Synchronous chown(2) - Change ownership of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function chownSync(path: PathLike, uid: number, gid: number): void; + + /** + * Asynchronous fchown(2) - Change ownership of a file. + * @param fd A file descriptor. + */ + function fchown(fd: number, uid: number, gid: number, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace fchown { + /** + * Asynchronous fchown(2) - Change ownership of a file. + * @param fd A file descriptor. + */ + function __promisify__(fd: number, uid: number, gid: number): Promise<void>; + } + + /** + * Synchronous fchown(2) - Change ownership of a file. + * @param fd A file descriptor. + */ + function fchownSync(fd: number, uid: number, gid: number): void; + + /** + * Asynchronous lchown(2) - Change ownership of a file. Does not dereference symbolic links. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function lchown(path: PathLike, uid: number, gid: number, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace lchown { + /** + * Asynchronous lchown(2) - Change ownership of a file. Does not dereference symbolic links. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function __promisify__(path: PathLike, uid: number, gid: number): Promise<void>; + } + + /** + * Synchronous lchown(2) - Change ownership of a file. Does not dereference symbolic links. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function lchownSync(path: PathLike, uid: number, gid: number): void; + + /** + * Asynchronous chmod(2) - Change permissions of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param mode A file mode. If a string is passed, it is parsed as an octal integer. + */ + function chmod(path: PathLike, mode: string | number, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace chmod { + /** + * Asynchronous chmod(2) - Change permissions of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param mode A file mode. If a string is passed, it is parsed as an octal integer. + */ + function __promisify__(path: PathLike, mode: string | number): Promise<void>; + } + + /** + * Synchronous chmod(2) - Change permissions of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param mode A file mode. If a string is passed, it is parsed as an octal integer. + */ + function chmodSync(path: PathLike, mode: string | number): void; + + /** + * Asynchronous fchmod(2) - Change permissions of a file. + * @param fd A file descriptor. + * @param mode A file mode. If a string is passed, it is parsed as an octal integer. + */ + function fchmod(fd: number, mode: string | number, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace fchmod { + /** + * Asynchronous fchmod(2) - Change permissions of a file. + * @param fd A file descriptor. + * @param mode A file mode. If a string is passed, it is parsed as an octal integer. + */ + function __promisify__(fd: number, mode: string | number): Promise<void>; + } + + /** + * Synchronous fchmod(2) - Change permissions of a file. + * @param fd A file descriptor. + * @param mode A file mode. If a string is passed, it is parsed as an octal integer. + */ + function fchmodSync(fd: number, mode: string | number): void; + + /** + * Asynchronous lchmod(2) - Change permissions of a file. Does not dereference symbolic links. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param mode A file mode. If a string is passed, it is parsed as an octal integer. + */ + function lchmod(path: PathLike, mode: string | number, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace lchmod { + /** + * Asynchronous lchmod(2) - Change permissions of a file. Does not dereference symbolic links. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param mode A file mode. If a string is passed, it is parsed as an octal integer. + */ + function __promisify__(path: PathLike, mode: string | number): Promise<void>; + } + + /** + * Synchronous lchmod(2) - Change permissions of a file. Does not dereference symbolic links. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param mode A file mode. If a string is passed, it is parsed as an octal integer. + */ + function lchmodSync(path: PathLike, mode: string | number): void; + + /** + * Asynchronous stat(2) - Get file status. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function stat(path: PathLike, callback: (err: NodeJS.ErrnoException | null, stats: Stats) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace stat { + /** + * Asynchronous stat(2) - Get file status. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function __promisify__(path: PathLike): Promise<Stats>; + } + + /** + * Synchronous stat(2) - Get file status. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function statSync(path: PathLike): Stats; + + /** + * Asynchronous fstat(2) - Get file status. + * @param fd A file descriptor. + */ + function fstat(fd: number, callback: (err: NodeJS.ErrnoException | null, stats: Stats) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace fstat { + /** + * Asynchronous fstat(2) - Get file status. + * @param fd A file descriptor. + */ + function __promisify__(fd: number): Promise<Stats>; + } + + /** + * Synchronous fstat(2) - Get file status. + * @param fd A file descriptor. + */ + function fstatSync(fd: number): Stats; + + /** + * Asynchronous lstat(2) - Get file status. Does not dereference symbolic links. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function lstat(path: PathLike, callback: (err: NodeJS.ErrnoException | null, stats: Stats) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace lstat { + /** + * Asynchronous lstat(2) - Get file status. Does not dereference symbolic links. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function __promisify__(path: PathLike): Promise<Stats>; + } + + /** + * Synchronous lstat(2) - Get file status. Does not dereference symbolic links. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function lstatSync(path: PathLike): Stats; + + /** + * Asynchronous link(2) - Create a new link (also known as a hard link) to an existing file. + * @param existingPath A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param newPath A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function link(existingPath: PathLike, newPath: PathLike, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace link { + /** + * Asynchronous link(2) - Create a new link (also known as a hard link) to an existing file. + * @param existingPath A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param newPath A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function link(existingPath: PathLike, newPath: PathLike): Promise<void>; + } + + /** + * Synchronous link(2) - Create a new link (also known as a hard link) to an existing file. + * @param existingPath A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param newPath A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function linkSync(existingPath: PathLike, newPath: PathLike): void; + + /** + * Asynchronous symlink(2) - Create a new symbolic link to an existing file. + * @param target A path to an existing file. If a URL is provided, it must use the `file:` protocol. + * @param path A path to the new symlink. If a URL is provided, it must use the `file:` protocol. + * @param type May be set to `'dir'`, `'file'`, or `'junction'` (default is `'file'`) and is only available on Windows (ignored on other platforms). + * When using `'junction'`, the `target` argument will automatically be normalized to an absolute path. + */ + function symlink(target: PathLike, path: PathLike, type: symlink.Type | undefined | null, callback: (err: NodeJS.ErrnoException | null) => void): void; + + /** + * Asynchronous symlink(2) - Create a new symbolic link to an existing file. + * @param target A path to an existing file. If a URL is provided, it must use the `file:` protocol. + * @param path A path to the new symlink. If a URL is provided, it must use the `file:` protocol. + */ + function symlink(target: PathLike, path: PathLike, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace symlink { + /** + * Asynchronous symlink(2) - Create a new symbolic link to an existing file. + * @param target A path to an existing file. If a URL is provided, it must use the `file:` protocol. + * @param path A path to the new symlink. If a URL is provided, it must use the `file:` protocol. + * @param type May be set to `'dir'`, `'file'`, or `'junction'` (default is `'file'`) and is only available on Windows (ignored on other platforms). + * When using `'junction'`, the `target` argument will automatically be normalized to an absolute path. + */ + function __promisify__(target: PathLike, path: PathLike, type?: string | null): Promise<void>; + + type Type = "dir" | "file" | "junction"; + } + + /** + * Synchronous symlink(2) - Create a new symbolic link to an existing file. + * @param target A path to an existing file. If a URL is provided, it must use the `file:` protocol. + * @param path A path to the new symlink. If a URL is provided, it must use the `file:` protocol. + * @param type May be set to `'dir'`, `'file'`, or `'junction'` (default is `'file'`) and is only available on Windows (ignored on other platforms). + * When using `'junction'`, the `target` argument will automatically be normalized to an absolute path. + */ + function symlinkSync(target: PathLike, path: PathLike, type?: symlink.Type | null): void; + + /** + * Asynchronous readlink(2) - read value of a symbolic link. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function readlink( + path: PathLike, + options: { encoding?: BufferEncoding | null } | BufferEncoding | undefined | null, + callback: (err: NodeJS.ErrnoException | null, linkString: string) => void + ): void; + + /** + * Asynchronous readlink(2) - read value of a symbolic link. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function readlink(path: PathLike, options: { encoding: "buffer" } | "buffer", callback: (err: NodeJS.ErrnoException | null, linkString: Buffer) => void): void; + + /** + * Asynchronous readlink(2) - read value of a symbolic link. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function readlink(path: PathLike, options: { encoding?: string | null } | string | undefined | null, callback: (err: NodeJS.ErrnoException | null, linkString: string | Buffer) => void): void; + + /** + * Asynchronous readlink(2) - read value of a symbolic link. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function readlink(path: PathLike, callback: (err: NodeJS.ErrnoException | null, linkString: string) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace readlink { + /** + * Asynchronous readlink(2) - read value of a symbolic link. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function __promisify__(path: PathLike, options?: { encoding?: BufferEncoding | null } | BufferEncoding | null): Promise<string>; + + /** + * Asynchronous readlink(2) - read value of a symbolic link. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function __promisify__(path: PathLike, options: { encoding: "buffer" } | "buffer"): Promise<Buffer>; + + /** + * Asynchronous readlink(2) - read value of a symbolic link. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function __promisify__(path: PathLike, options?: { encoding?: string | null } | string | null): Promise<string | Buffer>; + } + + /** + * Synchronous readlink(2) - read value of a symbolic link. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function readlinkSync(path: PathLike, options?: { encoding?: BufferEncoding | null } | BufferEncoding | null): string; + + /** + * Synchronous readlink(2) - read value of a symbolic link. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function readlinkSync(path: PathLike, options: { encoding: "buffer" } | "buffer"): Buffer; + + /** + * Synchronous readlink(2) - read value of a symbolic link. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function readlinkSync(path: PathLike, options?: { encoding?: string | null } | string | null): string | Buffer; + + /** + * Asynchronous realpath(3) - return the canonicalized absolute pathname. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function realpath( + path: PathLike, + options: { encoding?: BufferEncoding | null } | BufferEncoding | undefined | null, + callback: (err: NodeJS.ErrnoException | null, resolvedPath: string) => void + ): void; + + /** + * Asynchronous realpath(3) - return the canonicalized absolute pathname. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function realpath(path: PathLike, options: { encoding: "buffer" } | "buffer", callback: (err: NodeJS.ErrnoException | null, resolvedPath: Buffer) => void): void; + + /** + * Asynchronous realpath(3) - return the canonicalized absolute pathname. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function realpath(path: PathLike, options: { encoding?: string | null } | string | undefined | null, callback: (err: NodeJS.ErrnoException | null, resolvedPath: string | Buffer) => void): void; + + /** + * Asynchronous realpath(3) - return the canonicalized absolute pathname. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function realpath(path: PathLike, callback: (err: NodeJS.ErrnoException | null, resolvedPath: string) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace realpath { + /** + * Asynchronous realpath(3) - return the canonicalized absolute pathname. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function __promisify__(path: PathLike, options?: { encoding?: BufferEncoding | null } | BufferEncoding | null): Promise<string>; + + /** + * Asynchronous realpath(3) - return the canonicalized absolute pathname. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function __promisify__(path: PathLike, options: { encoding: "buffer" } | "buffer"): Promise<Buffer>; + + /** + * Asynchronous realpath(3) - return the canonicalized absolute pathname. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function __promisify__(path: PathLike, options?: { encoding?: string | null } | string | null): Promise<string | Buffer>; + + function native( + path: PathLike, + options: { encoding?: BufferEncoding | null } | BufferEncoding | undefined | null, + callback: (err: NodeJS.ErrnoException | null, resolvedPath: string) => void + ): void; + function native(path: PathLike, options: { encoding: "buffer" } | "buffer", callback: (err: NodeJS.ErrnoException | null, resolvedPath: Buffer) => void): void; + function native(path: PathLike, options: { encoding?: string | null } | string | undefined | null, callback: (err: NodeJS.ErrnoException | null, resolvedPath: string | Buffer) => void): void; + function native(path: PathLike, callback: (err: NodeJS.ErrnoException | null, resolvedPath: string) => void): void; + } + + /** + * Synchronous realpath(3) - return the canonicalized absolute pathname. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function realpathSync(path: PathLike, options?: { encoding?: BufferEncoding | null } | BufferEncoding | null): string; + + /** + * Synchronous realpath(3) - return the canonicalized absolute pathname. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function realpathSync(path: PathLike, options: { encoding: "buffer" } | "buffer"): Buffer; + + /** + * Synchronous realpath(3) - return the canonicalized absolute pathname. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function realpathSync(path: PathLike, options?: { encoding?: string | null } | string | null): string | Buffer; + + namespace realpathSync { + function native(path: PathLike, options?: { encoding?: BufferEncoding | null } | BufferEncoding | null): string; + function native(path: PathLike, options: { encoding: "buffer" } | "buffer"): Buffer; + function native(path: PathLike, options?: { encoding?: string | null } | string | null): string | Buffer; + } + + /** + * Asynchronous unlink(2) - delete a name and possibly the file it refers to. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function unlink(path: PathLike, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace unlink { + /** + * Asynchronous unlink(2) - delete a name and possibly the file it refers to. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function __promisify__(path: PathLike): Promise<void>; + } + + /** + * Synchronous unlink(2) - delete a name and possibly the file it refers to. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function unlinkSync(path: PathLike): void; + + /** + * Asynchronous rmdir(2) - delete a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function rmdir(path: PathLike, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace rmdir { + /** + * Asynchronous rmdir(2) - delete a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function __promisify__(path: PathLike): Promise<void>; + } + + /** + * Synchronous rmdir(2) - delete a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function rmdirSync(path: PathLike): void; + + export interface MakeDirectoryOptions { + /** + * Indicates whether parent folders should be created. + * @default false + */ + recursive?: boolean; + /** + * A file mode. If a string is passed, it is parsed as an octal integer. If not specified + * @default 0o777. + */ + mode?: number; + } + + /** + * Asynchronous mkdir(2) - create a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders + * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`. + */ + function mkdir(path: PathLike, options: number | string | MakeDirectoryOptions | undefined | null, callback: (err: NodeJS.ErrnoException | null) => void): void; + + /** + * Asynchronous mkdir(2) - create a directory with a mode of `0o777`. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function mkdir(path: PathLike, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace mkdir { + /** + * Asynchronous mkdir(2) - create a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders + * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`. + */ + function __promisify__(path: PathLike, options?: number | string | MakeDirectoryOptions | null): Promise<void>; + } + + /** + * Synchronous mkdir(2) - create a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders + * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`. + */ + function mkdirSync(path: PathLike, options?: number | string | MakeDirectoryOptions | null): void; + + /** + * Asynchronously creates a unique temporary directory. + * Generates six random characters to be appended behind a required prefix to create a unique temporary directory. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function mkdtemp(prefix: string, options: { encoding?: BufferEncoding | null } | BufferEncoding | undefined | null, callback: (err: NodeJS.ErrnoException | null, folder: string) => void): void; + + /** + * Asynchronously creates a unique temporary directory. + * Generates six random characters to be appended behind a required prefix to create a unique temporary directory. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function mkdtemp(prefix: string, options: "buffer" | { encoding: "buffer" }, callback: (err: NodeJS.ErrnoException | null, folder: Buffer) => void): void; + + /** + * Asynchronously creates a unique temporary directory. + * Generates six random characters to be appended behind a required prefix to create a unique temporary directory. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function mkdtemp(prefix: string, options: { encoding?: string | null } | string | undefined | null, callback: (err: NodeJS.ErrnoException | null, folder: string | Buffer) => void): void; + + /** + * Asynchronously creates a unique temporary directory. + * Generates six random characters to be appended behind a required prefix to create a unique temporary directory. + */ + function mkdtemp(prefix: string, callback: (err: NodeJS.ErrnoException | null, folder: string) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace mkdtemp { + /** + * Asynchronously creates a unique temporary directory. + * Generates six random characters to be appended behind a required prefix to create a unique temporary directory. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function __promisify__(prefix: string, options?: { encoding?: BufferEncoding | null } | BufferEncoding | null): Promise<string>; + + /** + * Asynchronously creates a unique temporary directory. + * Generates six random characters to be appended behind a required prefix to create a unique temporary directory. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function __promisify__(prefix: string, options: { encoding: "buffer" } | "buffer"): Promise<Buffer>; + + /** + * Asynchronously creates a unique temporary directory. + * Generates six random characters to be appended behind a required prefix to create a unique temporary directory. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function __promisify__(prefix: string, options?: { encoding?: string | null } | string | null): Promise<string | Buffer>; + } + + /** + * Synchronously creates a unique temporary directory. + * Generates six random characters to be appended behind a required prefix to create a unique temporary directory. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function mkdtempSync(prefix: string, options?: { encoding?: BufferEncoding | null } | BufferEncoding | null): string; + + /** + * Synchronously creates a unique temporary directory. + * Generates six random characters to be appended behind a required prefix to create a unique temporary directory. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function mkdtempSync(prefix: string, options: { encoding: "buffer" } | "buffer"): Buffer; + + /** + * Synchronously creates a unique temporary directory. + * Generates six random characters to be appended behind a required prefix to create a unique temporary directory. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function mkdtempSync(prefix: string, options?: { encoding?: string | null } | string | null): string | Buffer; + + /** + * Asynchronous readdir(3) - read a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function readdir( + path: PathLike, + options: { encoding: BufferEncoding | null; withFileTypes?: false } | BufferEncoding | undefined | null, + callback: (err: NodeJS.ErrnoException | null, files: string[]) => void, + ): void; + + /** + * Asynchronous readdir(3) - read a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function readdir(path: PathLike, options: { encoding: "buffer"; withFileTypes?: false } | "buffer", callback: (err: NodeJS.ErrnoException | null, files: Buffer[]) => void): void; + + /** + * Asynchronous readdir(3) - read a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function readdir( + path: PathLike, + options: { encoding?: string | null; withFileTypes?: false } | string | undefined | null, + callback: (err: NodeJS.ErrnoException | null, files: string[] | Buffer[]) => void, + ): void; + + /** + * Asynchronous readdir(3) - read a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function readdir(path: PathLike, callback: (err: NodeJS.ErrnoException | null, files: string[]) => void): void; + + /** + * Asynchronous readdir(3) - read a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options If called with `withFileTypes: true` the result data will be an array of Dirent. + */ + function readdir(path: PathLike, options: { encoding?: string | null; withFileTypes: true }, callback: (err: NodeJS.ErrnoException | null, files: Dirent[]) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace readdir { + /** + * Asynchronous readdir(3) - read a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function __promisify__(path: PathLike, options?: { encoding: BufferEncoding | null; withFileTypes?: false } | BufferEncoding | null): Promise<string[]>; + + /** + * Asynchronous readdir(3) - read a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function __promisify__(path: PathLike, options: "buffer" | { encoding: "buffer"; withFileTypes?: false }): Promise<Buffer[]>; + + /** + * Asynchronous readdir(3) - read a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function __promisify__(path: PathLike, options?: { encoding?: string | null; withFileTypes?: false } | string | null): Promise<string[] | Buffer[]>; + + /** + * Asynchronous readdir(3) - read a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options If called with `withFileTypes: true` the result data will be an array of Dirent + */ + function __promisify__(path: PathLike, options: { encoding?: string | null; withFileTypes: true }): Promise<Dirent[]>; + } + + /** + * Synchronous readdir(3) - read a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function readdirSync(path: PathLike, options?: { encoding: BufferEncoding | null; withFileTypes?: false } | BufferEncoding | null): string[]; + + /** + * Synchronous readdir(3) - read a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function readdirSync(path: PathLike, options: { encoding: "buffer"; withFileTypes?: false } | "buffer"): Buffer[]; + + /** + * Synchronous readdir(3) - read a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function readdirSync(path: PathLike, options?: { encoding?: string | null; withFileTypes?: false } | string | null): string[] | Buffer[]; + + /** + * Synchronous readdir(3) - read a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options If called with `withFileTypes: true` the result data will be an array of Dirent. + */ + function readdirSync(path: PathLike, options: { encoding?: string | null; withFileTypes: true }): Dirent[]; + + /** + * Asynchronous close(2) - close a file descriptor. + * @param fd A file descriptor. + */ + function close(fd: number, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace close { + /** + * Asynchronous close(2) - close a file descriptor. + * @param fd A file descriptor. + */ + function __promisify__(fd: number): Promise<void>; + } + + /** + * Synchronous close(2) - close a file descriptor. + * @param fd A file descriptor. + */ + function closeSync(fd: number): void; + + /** + * Asynchronous open(2) - open and possibly create a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param mode A file mode. If a string is passed, it is parsed as an octal integer. If not supplied, defaults to `0o666`. + */ + function open(path: PathLike, flags: string | number, mode: string | number | undefined | null, callback: (err: NodeJS.ErrnoException | null, fd: number) => void): void; + + /** + * Asynchronous open(2) - open and possibly create a file. If the file is created, its mode will be `0o666`. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function open(path: PathLike, flags: string | number, callback: (err: NodeJS.ErrnoException | null, fd: number) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace open { + /** + * Asynchronous open(2) - open and possibly create a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param mode A file mode. If a string is passed, it is parsed as an octal integer. If not supplied, defaults to `0o666`. + */ + function __promisify__(path: PathLike, flags: string | number, mode?: string | number | null): Promise<number>; + } + + /** + * Synchronous open(2) - open and possibly create a file, returning a file descriptor.. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param mode A file mode. If a string is passed, it is parsed as an octal integer. If not supplied, defaults to `0o666`. + */ + function openSync(path: PathLike, flags: string | number, mode?: string | number | null): number; + + /** + * Asynchronously change file timestamps of the file referenced by the supplied path. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param atime The last access time. If a string is provided, it will be coerced to number. + * @param mtime The last modified time. If a string is provided, it will be coerced to number. + */ + function utimes(path: PathLike, atime: string | number | Date, mtime: string | number | Date, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace utimes { + /** + * Asynchronously change file timestamps of the file referenced by the supplied path. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param atime The last access time. If a string is provided, it will be coerced to number. + * @param mtime The last modified time. If a string is provided, it will be coerced to number. + */ + function __promisify__(path: PathLike, atime: string | number | Date, mtime: string | number | Date): Promise<void>; + } + + /** + * Synchronously change file timestamps of the file referenced by the supplied path. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param atime The last access time. If a string is provided, it will be coerced to number. + * @param mtime The last modified time. If a string is provided, it will be coerced to number. + */ + function utimesSync(path: PathLike, atime: string | number | Date, mtime: string | number | Date): void; + + /** + * Asynchronously change file timestamps of the file referenced by the supplied file descriptor. + * @param fd A file descriptor. + * @param atime The last access time. If a string is provided, it will be coerced to number. + * @param mtime The last modified time. If a string is provided, it will be coerced to number. + */ + function futimes(fd: number, atime: string | number | Date, mtime: string | number | Date, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace futimes { + /** + * Asynchronously change file timestamps of the file referenced by the supplied file descriptor. + * @param fd A file descriptor. + * @param atime The last access time. If a string is provided, it will be coerced to number. + * @param mtime The last modified time. If a string is provided, it will be coerced to number. + */ + function __promisify__(fd: number, atime: string | number | Date, mtime: string | number | Date): Promise<void>; + } + + /** + * Synchronously change file timestamps of the file referenced by the supplied file descriptor. + * @param fd A file descriptor. + * @param atime The last access time. If a string is provided, it will be coerced to number. + * @param mtime The last modified time. If a string is provided, it will be coerced to number. + */ + function futimesSync(fd: number, atime: string | number | Date, mtime: string | number | Date): void; + + /** + * Asynchronous fsync(2) - synchronize a file's in-core state with the underlying storage device. + * @param fd A file descriptor. + */ + function fsync(fd: number, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace fsync { + /** + * Asynchronous fsync(2) - synchronize a file's in-core state with the underlying storage device. + * @param fd A file descriptor. + */ + function __promisify__(fd: number): Promise<void>; + } + + /** + * Synchronous fsync(2) - synchronize a file's in-core state with the underlying storage device. + * @param fd A file descriptor. + */ + function fsyncSync(fd: number): void; + + /** + * Asynchronously writes `buffer` to the file referenced by the supplied file descriptor. + * @param fd A file descriptor. + * @param offset The part of the buffer to be written. If not supplied, defaults to `0`. + * @param length The number of bytes to write. If not supplied, defaults to `buffer.length - offset`. + * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position. + */ + function write<TBuffer extends BinaryData>( + fd: number, + buffer: TBuffer, + offset: number | undefined | null, + length: number | undefined | null, + position: number | undefined | null, + callback: (err: NodeJS.ErrnoException | null, written: number, buffer: TBuffer) => void, + ): void; + + /** + * Asynchronously writes `buffer` to the file referenced by the supplied file descriptor. + * @param fd A file descriptor. + * @param offset The part of the buffer to be written. If not supplied, defaults to `0`. + * @param length The number of bytes to write. If not supplied, defaults to `buffer.length - offset`. + */ + function write<TBuffer extends BinaryData>( + fd: number, + buffer: TBuffer, + offset: number | undefined | null, + length: number | undefined | null, + callback: (err: NodeJS.ErrnoException | null, written: number, buffer: TBuffer) => void, + ): void; + + /** + * Asynchronously writes `buffer` to the file referenced by the supplied file descriptor. + * @param fd A file descriptor. + * @param offset The part of the buffer to be written. If not supplied, defaults to `0`. + */ + function write<TBuffer extends BinaryData>( + fd: number, + buffer: TBuffer, + offset: number | undefined | null, + callback: (err: NodeJS.ErrnoException | null, written: number, buffer: TBuffer) => void + ): void; + + /** + * Asynchronously writes `buffer` to the file referenced by the supplied file descriptor. + * @param fd A file descriptor. + */ + function write<TBuffer extends BinaryData>(fd: number, buffer: TBuffer, callback: (err: NodeJS.ErrnoException | null, written: number, buffer: TBuffer) => void): void; + + /** + * Asynchronously writes `string` to the file referenced by the supplied file descriptor. + * @param fd A file descriptor. + * @param string A string to write. If something other than a string is supplied it will be coerced to a string. + * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position. + * @param encoding The expected string encoding. + */ + function write( + fd: number, + string: any, + position: number | undefined | null, + encoding: string | undefined | null, + callback: (err: NodeJS.ErrnoException | null, written: number, str: string) => void, + ): void; + + /** + * Asynchronously writes `string` to the file referenced by the supplied file descriptor. + * @param fd A file descriptor. + * @param string A string to write. If something other than a string is supplied it will be coerced to a string. + * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position. + */ + function write(fd: number, string: any, position: number | undefined | null, callback: (err: NodeJS.ErrnoException | null, written: number, str: string) => void): void; + + /** + * Asynchronously writes `string` to the file referenced by the supplied file descriptor. + * @param fd A file descriptor. + * @param string A string to write. If something other than a string is supplied it will be coerced to a string. + */ + function write(fd: number, string: any, callback: (err: NodeJS.ErrnoException | null, written: number, str: string) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace write { + /** + * Asynchronously writes `buffer` to the file referenced by the supplied file descriptor. + * @param fd A file descriptor. + * @param offset The part of the buffer to be written. If not supplied, defaults to `0`. + * @param length The number of bytes to write. If not supplied, defaults to `buffer.length - offset`. + * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position. + */ + function __promisify__<TBuffer extends BinaryData>( + fd: number, + buffer?: TBuffer, + offset?: number, + length?: number, + position?: number | null, + ): Promise<{ bytesWritten: number, buffer: TBuffer }>; + + /** + * Asynchronously writes `string` to the file referenced by the supplied file descriptor. + * @param fd A file descriptor. + * @param string A string to write. If something other than a string is supplied it will be coerced to a string. + * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position. + * @param encoding The expected string encoding. + */ + function __promisify__(fd: number, string: any, position?: number | null, encoding?: string | null): Promise<{ bytesWritten: number, buffer: string }>; + } + + /** + * Synchronously writes `buffer` to the file referenced by the supplied file descriptor, returning the number of bytes written. + * @param fd A file descriptor. + * @param offset The part of the buffer to be written. If not supplied, defaults to `0`. + * @param length The number of bytes to write. If not supplied, defaults to `buffer.length - offset`. + * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position. + */ + function writeSync(fd: number, buffer: BinaryData, offset?: number | null, length?: number | null, position?: number | null): number; + + /** + * Synchronously writes `string` to the file referenced by the supplied file descriptor, returning the number of bytes written. + * @param fd A file descriptor. + * @param string A string to write. If something other than a string is supplied it will be coerced to a string. + * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position. + * @param encoding The expected string encoding. + */ + function writeSync(fd: number, string: any, position?: number | null, encoding?: string | null): number; + + /** + * Asynchronously reads data from the file referenced by the supplied file descriptor. + * @param fd A file descriptor. + * @param buffer The buffer that the data will be written to. + * @param offset The offset in the buffer at which to start writing. + * @param length The number of bytes to read. + * @param position The offset from the beginning of the file from which data should be read. If `null`, data will be read from the current position. + */ + function read<TBuffer extends BinaryData>( + fd: number, + buffer: TBuffer, + offset: number, + length: number, + position: number | null, + callback: (err: NodeJS.ErrnoException | null, bytesRead: number, buffer: TBuffer) => void, + ): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace read { + /** + * @param fd A file descriptor. + * @param buffer The buffer that the data will be written to. + * @param offset The offset in the buffer at which to start writing. + * @param length The number of bytes to read. + * @param position The offset from the beginning of the file from which data should be read. If `null`, data will be read from the current position. + */ + function __promisify__<TBuffer extends BinaryData>(fd: number, buffer: TBuffer, offset: number, length: number, position: number | null): Promise<{ bytesRead: number, buffer: TBuffer }>; + } + + /** + * Synchronously reads data from the file referenced by the supplied file descriptor, returning the number of bytes read. + * @param fd A file descriptor. + * @param buffer The buffer that the data will be written to. + * @param offset The offset in the buffer at which to start writing. + * @param length The number of bytes to read. + * @param position The offset from the beginning of the file from which data should be read. If `null`, data will be read from the current position. + */ + function readSync(fd: number, buffer: BinaryData, offset: number, length: number, position: number | null): number; + + /** + * Asynchronously reads the entire contents of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * If a file descriptor is provided, the underlying file will _not_ be closed automatically. + * @param options An object that may contain an optional flag. + * If a flag is not provided, it defaults to `'r'`. + */ + function readFile(path: PathLike | number, options: { encoding?: null; flag?: string; } | undefined | null, callback: (err: NodeJS.ErrnoException | null, data: Buffer) => void): void; + + /** + * Asynchronously reads the entire contents of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * If a file descriptor is provided, the underlying file will _not_ be closed automatically. + * @param options Either the encoding for the result, or an object that contains the encoding and an optional flag. + * If a flag is not provided, it defaults to `'r'`. + */ + function readFile(path: PathLike | number, options: { encoding: string; flag?: string; } | string, callback: (err: NodeJS.ErrnoException | null, data: string) => void): void; + + /** + * Asynchronously reads the entire contents of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * If a file descriptor is provided, the underlying file will _not_ be closed automatically. + * @param options Either the encoding for the result, or an object that contains the encoding and an optional flag. + * If a flag is not provided, it defaults to `'r'`. + */ + function readFile( + path: PathLike | number, + options: { encoding?: string | null; flag?: string; } | string | undefined | null, + callback: (err: NodeJS.ErrnoException | null, data: string | Buffer) => void, + ): void; + + /** + * Asynchronously reads the entire contents of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * If a file descriptor is provided, the underlying file will _not_ be closed automatically. + */ + function readFile(path: PathLike | number, callback: (err: NodeJS.ErrnoException | null, data: Buffer) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace readFile { + /** + * Asynchronously reads the entire contents of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * If a file descriptor is provided, the underlying file will _not_ be closed automatically. + * @param options An object that may contain an optional flag. + * If a flag is not provided, it defaults to `'r'`. + */ + function __promisify__(path: PathLike | number, options?: { encoding?: null; flag?: string; } | null): Promise<Buffer>; + + /** + * Asynchronously reads the entire contents of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * If a file descriptor is provided, the underlying file will _not_ be closed automatically. + * @param options Either the encoding for the result, or an object that contains the encoding and an optional flag. + * If a flag is not provided, it defaults to `'r'`. + */ + function __promisify__(path: PathLike | number, options: { encoding: string; flag?: string; } | string): Promise<string>; + + /** + * Asynchronously reads the entire contents of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * If a file descriptor is provided, the underlying file will _not_ be closed automatically. + * @param options Either the encoding for the result, or an object that contains the encoding and an optional flag. + * If a flag is not provided, it defaults to `'r'`. + */ + function __promisify__(path: PathLike | number, options?: { encoding?: string | null; flag?: string; } | string | null): Promise<string | Buffer>; + } + + /** + * Synchronously reads the entire contents of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * If a file descriptor is provided, the underlying file will _not_ be closed automatically. + * @param options An object that may contain an optional flag. If a flag is not provided, it defaults to `'r'`. + */ + function readFileSync(path: PathLike | number, options?: { encoding?: null; flag?: string; } | null): Buffer; + + /** + * Synchronously reads the entire contents of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * If a file descriptor is provided, the underlying file will _not_ be closed automatically. + * @param options Either the encoding for the result, or an object that contains the encoding and an optional flag. + * If a flag is not provided, it defaults to `'r'`. + */ + function readFileSync(path: PathLike | number, options: { encoding: string; flag?: string; } | string): string; + + /** + * Synchronously reads the entire contents of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * If a file descriptor is provided, the underlying file will _not_ be closed automatically. + * @param options Either the encoding for the result, or an object that contains the encoding and an optional flag. + * If a flag is not provided, it defaults to `'r'`. + */ + function readFileSync(path: PathLike | number, options?: { encoding?: string | null; flag?: string; } | string | null): string | Buffer; + + type WriteFileOptions = { encoding?: string | null; mode?: number | string; flag?: string; } | string | null; + + /** + * Asynchronously writes data to a file, replacing the file if it already exists. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * If a file descriptor is provided, the underlying file will _not_ be closed automatically. + * @param data The data to write. If something other than a Buffer or Uint8Array is provided, the value is coerced to a string. + * @param options Either the encoding for the file, or an object optionally specifying the encoding, file mode, and flag. + * If `encoding` is not supplied, the default of `'utf8'` is used. + * If `mode` is not supplied, the default of `0o666` is used. + * If `mode` is a string, it is parsed as an octal integer. + * If `flag` is not supplied, the default of `'w'` is used. + */ + function writeFile(path: PathLike | number, data: any, options: WriteFileOptions, callback: (err: NodeJS.ErrnoException | null) => void): void; + + /** + * Asynchronously writes data to a file, replacing the file if it already exists. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * If a file descriptor is provided, the underlying file will _not_ be closed automatically. + * @param data The data to write. If something other than a Buffer or Uint8Array is provided, the value is coerced to a string. + */ + function writeFile(path: PathLike | number, data: any, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace writeFile { + /** + * Asynchronously writes data to a file, replacing the file if it already exists. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * If a file descriptor is provided, the underlying file will _not_ be closed automatically. + * @param data The data to write. If something other than a Buffer or Uint8Array is provided, the value is coerced to a string. + * @param options Either the encoding for the file, or an object optionally specifying the encoding, file mode, and flag. + * If `encoding` is not supplied, the default of `'utf8'` is used. + * If `mode` is not supplied, the default of `0o666` is used. + * If `mode` is a string, it is parsed as an octal integer. + * If `flag` is not supplied, the default of `'w'` is used. + */ + function __promisify__(path: PathLike | number, data: any, options?: WriteFileOptions): Promise<void>; + } + + /** + * Synchronously writes data to a file, replacing the file if it already exists. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * If a file descriptor is provided, the underlying file will _not_ be closed automatically. + * @param data The data to write. If something other than a Buffer or Uint8Array is provided, the value is coerced to a string. + * @param options Either the encoding for the file, or an object optionally specifying the encoding, file mode, and flag. + * If `encoding` is not supplied, the default of `'utf8'` is used. + * If `mode` is not supplied, the default of `0o666` is used. + * If `mode` is a string, it is parsed as an octal integer. + * If `flag` is not supplied, the default of `'w'` is used. + */ + function writeFileSync(path: PathLike | number, data: any, options?: WriteFileOptions): void; + + /** + * Asynchronously append data to a file, creating the file if it does not exist. + * @param file A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * If a file descriptor is provided, the underlying file will _not_ be closed automatically. + * @param data The data to write. If something other than a Buffer or Uint8Array is provided, the value is coerced to a string. + * @param options Either the encoding for the file, or an object optionally specifying the encoding, file mode, and flag. + * If `encoding` is not supplied, the default of `'utf8'` is used. + * If `mode` is not supplied, the default of `0o666` is used. + * If `mode` is a string, it is parsed as an octal integer. + * If `flag` is not supplied, the default of `'a'` is used. + */ + function appendFile(file: PathLike | number, data: any, options: WriteFileOptions, callback: (err: NodeJS.ErrnoException | null) => void): void; + + /** + * Asynchronously append data to a file, creating the file if it does not exist. + * @param file A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * If a file descriptor is provided, the underlying file will _not_ be closed automatically. + * @param data The data to write. If something other than a Buffer or Uint8Array is provided, the value is coerced to a string. + */ + function appendFile(file: PathLike | number, data: any, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace appendFile { + /** + * Asynchronously append data to a file, creating the file if it does not exist. + * @param file A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * If a file descriptor is provided, the underlying file will _not_ be closed automatically. + * @param data The data to write. If something other than a Buffer or Uint8Array is provided, the value is coerced to a string. + * @param options Either the encoding for the file, or an object optionally specifying the encoding, file mode, and flag. + * If `encoding` is not supplied, the default of `'utf8'` is used. + * If `mode` is not supplied, the default of `0o666` is used. + * If `mode` is a string, it is parsed as an octal integer. + * If `flag` is not supplied, the default of `'a'` is used. + */ + function __promisify__(file: PathLike | number, data: any, options?: WriteFileOptions): Promise<void>; + } + + /** + * Synchronously append data to a file, creating the file if it does not exist. + * @param file A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * If a file descriptor is provided, the underlying file will _not_ be closed automatically. + * @param data The data to write. If something other than a Buffer or Uint8Array is provided, the value is coerced to a string. + * @param options Either the encoding for the file, or an object optionally specifying the encoding, file mode, and flag. + * If `encoding` is not supplied, the default of `'utf8'` is used. + * If `mode` is not supplied, the default of `0o666` is used. + * If `mode` is a string, it is parsed as an octal integer. + * If `flag` is not supplied, the default of `'a'` is used. + */ + function appendFileSync(file: PathLike | number, data: any, options?: WriteFileOptions): void; + + /** + * Watch for changes on `filename`. The callback `listener` will be called each time the file is accessed. + */ + function watchFile(filename: PathLike, options: { persistent?: boolean; interval?: number; } | undefined, listener: (curr: Stats, prev: Stats) => void): void; + + /** + * Watch for changes on `filename`. The callback `listener` will be called each time the file is accessed. + * @param filename A path to a file or directory. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + */ + function watchFile(filename: PathLike, listener: (curr: Stats, prev: Stats) => void): void; + + /** + * Stop watching for changes on `filename`. + * @param filename A path to a file or directory. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + */ + function unwatchFile(filename: PathLike, listener?: (curr: Stats, prev: Stats) => void): void; + + /** + * Watch for changes on `filename`, where `filename` is either a file or a directory, returning an `FSWatcher`. + * @param filename A path to a file or directory. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * @param options Either the encoding for the filename provided to the listener, or an object optionally specifying encoding, persistent, and recursive options. + * If `encoding` is not supplied, the default of `'utf8'` is used. + * If `persistent` is not supplied, the default of `true` is used. + * If `recursive` is not supplied, the default of `false` is used. + */ + function watch( + filename: PathLike, + options: { encoding?: BufferEncoding | null, persistent?: boolean, recursive?: boolean } | BufferEncoding | undefined | null, + listener?: (event: string, filename: string) => void, + ): FSWatcher; + + /** + * Watch for changes on `filename`, where `filename` is either a file or a directory, returning an `FSWatcher`. + * @param filename A path to a file or directory. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * @param options Either the encoding for the filename provided to the listener, or an object optionally specifying encoding, persistent, and recursive options. + * If `encoding` is not supplied, the default of `'utf8'` is used. + * If `persistent` is not supplied, the default of `true` is used. + * If `recursive` is not supplied, the default of `false` is used. + */ + function watch(filename: PathLike, options: { encoding: "buffer", persistent?: boolean, recursive?: boolean } | "buffer", listener?: (event: string, filename: Buffer) => void): FSWatcher; + + /** + * Watch for changes on `filename`, where `filename` is either a file or a directory, returning an `FSWatcher`. + * @param filename A path to a file or directory. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * @param options Either the encoding for the filename provided to the listener, or an object optionally specifying encoding, persistent, and recursive options. + * If `encoding` is not supplied, the default of `'utf8'` is used. + * If `persistent` is not supplied, the default of `true` is used. + * If `recursive` is not supplied, the default of `false` is used. + */ + function watch( + filename: PathLike, + options: { encoding?: string | null, persistent?: boolean, recursive?: boolean } | string | null, + listener?: (event: string, filename: string | Buffer) => void, + ): FSWatcher; + + /** + * Watch for changes on `filename`, where `filename` is either a file or a directory, returning an `FSWatcher`. + * @param filename A path to a file or directory. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + */ + function watch(filename: PathLike, listener?: (event: string, filename: string) => any): FSWatcher; + + /** + * Asynchronously tests whether or not the given path exists by checking with the file system. + * @deprecated + * @param path A path to a file or directory. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + */ + function exists(path: PathLike, callback: (exists: boolean) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace exists { + /** + * @param path A path to a file or directory. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + */ + function __promisify__(path: PathLike): Promise<boolean>; + } + + /** + * Synchronously tests whether or not the given path exists by checking with the file system. + * @param path A path to a file or directory. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + */ + function existsSync(path: PathLike): boolean; + + namespace constants { + // File Access Constants + + /** Constant for fs.access(). File is visible to the calling process. */ + const F_OK: number; + + /** Constant for fs.access(). File can be read by the calling process. */ + const R_OK: number; + + /** Constant for fs.access(). File can be written by the calling process. */ + const W_OK: number; + + /** Constant for fs.access(). File can be executed by the calling process. */ + const X_OK: number; + + // File Copy Constants + + /** Constant for fs.copyFile. Flag indicating the destination file should not be overwritten if it already exists. */ + const COPYFILE_EXCL: number; + + /** + * Constant for fs.copyFile. copy operation will attempt to create a copy-on-write reflink. + * If the underlying platform does not support copy-on-write, then a fallback copy mechanism is used. + */ + const COPYFILE_FICLONE: number; + + /** + * Constant for fs.copyFile. Copy operation will attempt to create a copy-on-write reflink. + * If the underlying platform does not support copy-on-write, then the operation will fail with an error. + */ + const COPYFILE_FICLONE_FORCE: number; + + // File Open Constants + + /** Constant for fs.open(). Flag indicating to open a file for read-only access. */ + const O_RDONLY: number; + + /** Constant for fs.open(). Flag indicating to open a file for write-only access. */ + const O_WRONLY: number; + + /** Constant for fs.open(). Flag indicating to open a file for read-write access. */ + const O_RDWR: number; + + /** Constant for fs.open(). Flag indicating to create the file if it does not already exist. */ + const O_CREAT: number; + + /** Constant for fs.open(). Flag indicating that opening a file should fail if the O_CREAT flag is set and the file already exists. */ + const O_EXCL: number; + + /** + * Constant for fs.open(). Flag indicating that if path identifies a terminal device, + * opening the path shall not cause that terminal to become the controlling terminal for the process + * (if the process does not already have one). + */ + const O_NOCTTY: number; + + /** Constant for fs.open(). Flag indicating that if the file exists and is a regular file, and the file is opened successfully for write access, its length shall be truncated to zero. */ + const O_TRUNC: number; + + /** Constant for fs.open(). Flag indicating that data will be appended to the end of the file. */ + const O_APPEND: number; + + /** Constant for fs.open(). Flag indicating that the open should fail if the path is not a directory. */ + const O_DIRECTORY: number; + + /** + * constant for fs.open(). + * Flag indicating reading accesses to the file system will no longer result in + * an update to the atime information associated with the file. + * This flag is available on Linux operating systems only. + */ + const O_NOATIME: number; + + /** Constant for fs.open(). Flag indicating that the open should fail if the path is a symbolic link. */ + const O_NOFOLLOW: number; + + /** Constant for fs.open(). Flag indicating that the file is opened for synchronous I/O. */ + const O_SYNC: number; + + /** Constant for fs.open(). Flag indicating that the file is opened for synchronous I/O with write operations waiting for data integrity. */ + const O_DSYNC: number; + + /** Constant for fs.open(). Flag indicating to open the symbolic link itself rather than the resource it is pointing to. */ + const O_SYMLINK: number; + + /** Constant for fs.open(). When set, an attempt will be made to minimize caching effects of file I/O. */ + const O_DIRECT: number; + + /** Constant for fs.open(). Flag indicating to open the file in nonblocking mode when possible. */ + const O_NONBLOCK: number; + + // File Type Constants + + /** Constant for fs.Stats mode property for determining a file's type. Bit mask used to extract the file type code. */ + const S_IFMT: number; + + /** Constant for fs.Stats mode property for determining a file's type. File type constant for a regular file. */ + const S_IFREG: number; + + /** Constant for fs.Stats mode property for determining a file's type. File type constant for a directory. */ + const S_IFDIR: number; + + /** Constant for fs.Stats mode property for determining a file's type. File type constant for a character-oriented device file. */ + const S_IFCHR: number; + + /** Constant for fs.Stats mode property for determining a file's type. File type constant for a block-oriented device file. */ + const S_IFBLK: number; + + /** Constant for fs.Stats mode property for determining a file's type. File type constant for a FIFO/pipe. */ + const S_IFIFO: number; + + /** Constant for fs.Stats mode property for determining a file's type. File type constant for a symbolic link. */ + const S_IFLNK: number; + + /** Constant for fs.Stats mode property for determining a file's type. File type constant for a socket. */ + const S_IFSOCK: number; + + // File Mode Constants + + /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating readable, writable and executable by owner. */ + const S_IRWXU: number; + + /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating readable by owner. */ + const S_IRUSR: number; + + /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating writable by owner. */ + const S_IWUSR: number; + + /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating executable by owner. */ + const S_IXUSR: number; + + /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating readable, writable and executable by group. */ + const S_IRWXG: number; + + /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating readable by group. */ + const S_IRGRP: number; + + /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating writable by group. */ + const S_IWGRP: number; + + /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating executable by group. */ + const S_IXGRP: number; + + /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating readable, writable and executable by others. */ + const S_IRWXO: number; + + /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating readable by others. */ + const S_IROTH: number; + + /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating writable by others. */ + const S_IWOTH: number; + + /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating executable by others. */ + const S_IXOTH: number; + } + + /** + * Asynchronously tests a user's permissions for the file specified by path. + * @param path A path to a file or directory. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + */ + function access(path: PathLike, mode: number | undefined, callback: (err: NodeJS.ErrnoException | null) => void): void; + + /** + * Asynchronously tests a user's permissions for the file specified by path. + * @param path A path to a file or directory. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + */ + function access(path: PathLike, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace access { + /** + * Asynchronously tests a user's permissions for the file specified by path. + * @param path A path to a file or directory. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + */ + function __promisify__(path: PathLike, mode?: number): Promise<void>; + } + + /** + * Synchronously tests a user's permissions for the file specified by path. + * @param path A path to a file or directory. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + */ + function accessSync(path: PathLike, mode?: number): void; + + /** + * Returns a new `ReadStream` object. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + */ + function createReadStream(path: PathLike, options?: string | { + flags?: string; + encoding?: string; + fd?: number; + mode?: number; + autoClose?: boolean; + start?: number; + end?: number; + highWaterMark?: number; + }): ReadStream; + + /** + * Returns a new `WriteStream` object. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + */ + function createWriteStream(path: PathLike, options?: string | { + flags?: string; + encoding?: string; + fd?: number; + mode?: number; + autoClose?: boolean; + start?: number; + highWaterMark?: number; + }): WriteStream; + + /** + * Asynchronous fdatasync(2) - synchronize a file's in-core state with storage device. + * @param fd A file descriptor. + */ + function fdatasync(fd: number, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace fdatasync { + /** + * Asynchronous fdatasync(2) - synchronize a file's in-core state with storage device. + * @param fd A file descriptor. + */ + function __promisify__(fd: number): Promise<void>; + } + + /** + * Synchronous fdatasync(2) - synchronize a file's in-core state with storage device. + * @param fd A file descriptor. + */ + function fdatasyncSync(fd: number): void; + + /** + * Asynchronously copies src to dest. By default, dest is overwritten if it already exists. + * No arguments other than a possible exception are given to the callback function. + * Node.js makes no guarantees about the atomicity of the copy operation. + * If an error occurs after the destination file has been opened for writing, Node.js will attempt + * to remove the destination. + * @param src A path to the source file. + * @param dest A path to the destination file. + */ + function copyFile(src: PathLike, dest: PathLike, callback: (err: NodeJS.ErrnoException | null) => void): void; + /** + * Asynchronously copies src to dest. By default, dest is overwritten if it already exists. + * No arguments other than a possible exception are given to the callback function. + * Node.js makes no guarantees about the atomicity of the copy operation. + * If an error occurs after the destination file has been opened for writing, Node.js will attempt + * to remove the destination. + * @param src A path to the source file. + * @param dest A path to the destination file. + * @param flags An integer that specifies the behavior of the copy operation. The only supported flag is fs.constants.COPYFILE_EXCL, which causes the copy operation to fail if dest already exists. + */ + function copyFile(src: PathLike, dest: PathLike, flags: number, callback: (err: NodeJS.ErrnoException | null) => void): void; + + // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime. + namespace copyFile { + /** + * Asynchronously copies src to dest. By default, dest is overwritten if it already exists. + * No arguments other than a possible exception are given to the callback function. + * Node.js makes no guarantees about the atomicity of the copy operation. + * If an error occurs after the destination file has been opened for writing, Node.js will attempt + * to remove the destination. + * @param src A path to the source file. + * @param dest A path to the destination file. + * @param flags An optional integer that specifies the behavior of the copy operation. + * The only supported flag is fs.constants.COPYFILE_EXCL, + * which causes the copy operation to fail if dest already exists. + */ + function __promisify__(src: PathLike, dst: PathLike, flags?: number): Promise<void>; + } + + /** + * Synchronously copies src to dest. By default, dest is overwritten if it already exists. + * Node.js makes no guarantees about the atomicity of the copy operation. + * If an error occurs after the destination file has been opened for writing, Node.js will attempt + * to remove the destination. + * @param src A path to the source file. + * @param dest A path to the destination file. + * @param flags An optional integer that specifies the behavior of the copy operation. + * The only supported flag is fs.constants.COPYFILE_EXCL, which causes the copy operation to fail if dest already exists. + */ + function copyFileSync(src: PathLike, dest: PathLike, flags?: number): void; + + namespace promises { + interface FileHandle { + /** + * Gets the file descriptor for this file handle. + */ + readonly fd: number; + + /** + * Asynchronously append data to a file, creating the file if it does not exist. The underlying file will _not_ be closed automatically. + * The `FileHandle` must have been opened for appending. + * @param data The data to write. If something other than a `Buffer` or `Uint8Array` is provided, the value is coerced to a string. + * @param options Either the encoding for the file, or an object optionally specifying the encoding, file mode, and flag. + * If `encoding` is not supplied, the default of `'utf8'` is used. + * If `mode` is not supplied, the default of `0o666` is used. + * If `mode` is a string, it is parsed as an octal integer. + * If `flag` is not supplied, the default of `'a'` is used. + */ + appendFile(data: any, options?: { encoding?: string | null, mode?: string | number, flag?: string | number } | string | null): Promise<void>; + + /** + * Asynchronous fchown(2) - Change ownership of a file. + */ + chown(uid: number, gid: number): Promise<void>; + + /** + * Asynchronous fchmod(2) - Change permissions of a file. + * @param mode A file mode. If a string is passed, it is parsed as an octal integer. + */ + chmod(mode: string | number): Promise<void>; + + /** + * Asynchronous fdatasync(2) - synchronize a file's in-core state with storage device. + */ + datasync(): Promise<void>; + + /** + * Asynchronous fsync(2) - synchronize a file's in-core state with the underlying storage device. + */ + sync(): Promise<void>; + + /** + * Asynchronously reads data from the file. + * The `FileHandle` must have been opened for reading. + * @param buffer The buffer that the data will be written to. + * @param offset The offset in the buffer at which to start writing. + * @param length The number of bytes to read. + * @param position The offset from the beginning of the file from which data should be read. If `null`, data will be read from the current position. + */ + read<TBuffer extends Uint8Array>(buffer: TBuffer, offset?: number | null, length?: number | null, position?: number | null): Promise<{ bytesRead: number, buffer: TBuffer }>; + + /** + * Asynchronously reads the entire contents of a file. The underlying file will _not_ be closed automatically. + * The `FileHandle` must have been opened for reading. + * @param options An object that may contain an optional flag. + * If a flag is not provided, it defaults to `'r'`. + */ + readFile(options?: { encoding?: null, flag?: string | number } | null): Promise<Buffer>; + + /** + * Asynchronously reads the entire contents of a file. The underlying file will _not_ be closed automatically. + * The `FileHandle` must have been opened for reading. + * @param options An object that may contain an optional flag. + * If a flag is not provided, it defaults to `'r'`. + */ + readFile(options: { encoding: BufferEncoding, flag?: string | number } | BufferEncoding): Promise<string>; + + /** + * Asynchronously reads the entire contents of a file. The underlying file will _not_ be closed automatically. + * The `FileHandle` must have been opened for reading. + * @param options An object that may contain an optional flag. + * If a flag is not provided, it defaults to `'r'`. + */ + readFile(options?: { encoding?: string | null, flag?: string | number } | string | null): Promise<string | Buffer>; + + /** + * Asynchronous fstat(2) - Get file status. + */ + stat(): Promise<Stats>; + + /** + * Asynchronous ftruncate(2) - Truncate a file to a specified length. + * @param len If not specified, defaults to `0`. + */ + truncate(len?: number): Promise<void>; + + /** + * Asynchronously change file timestamps of the file. + * @param atime The last access time. If a string is provided, it will be coerced to number. + * @param mtime The last modified time. If a string is provided, it will be coerced to number. + */ + utimes(atime: string | number | Date, mtime: string | number | Date): Promise<void>; + + /** + * Asynchronously writes `buffer` to the file. + * The `FileHandle` must have been opened for writing. + * @param buffer The buffer that the data will be written to. + * @param offset The part of the buffer to be written. If not supplied, defaults to `0`. + * @param length The number of bytes to write. If not supplied, defaults to `buffer.length - offset`. + * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position. + */ + write<TBuffer extends Uint8Array>(buffer: TBuffer, offset?: number | null, length?: number | null, position?: number | null): Promise<{ bytesWritten: number, buffer: TBuffer }>; + + /** + * Asynchronously writes `string` to the file. + * The `FileHandle` must have been opened for writing. + * It is unsafe to call `write()` multiple times on the same file without waiting for the `Promise` + * to be resolved (or rejected). For this scenario, `fs.createWriteStream` is strongly recommended. + * @param string A string to write. If something other than a string is supplied it will be coerced to a string. + * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position. + * @param encoding The expected string encoding. + */ + write(data: any, position?: number | null, encoding?: string | null): Promise<{ bytesWritten: number, buffer: string }>; + + /** + * Asynchronously writes data to a file, replacing the file if it already exists. The underlying file will _not_ be closed automatically. + * The `FileHandle` must have been opened for writing. + * It is unsafe to call `writeFile()` multiple times on the same file without waiting for the `Promise` to be resolved (or rejected). + * @param data The data to write. If something other than a `Buffer` or `Uint8Array` is provided, the value is coerced to a string. + * @param options Either the encoding for the file, or an object optionally specifying the encoding, file mode, and flag. + * If `encoding` is not supplied, the default of `'utf8'` is used. + * If `mode` is not supplied, the default of `0o666` is used. + * If `mode` is a string, it is parsed as an octal integer. + * If `flag` is not supplied, the default of `'w'` is used. + */ + writeFile(data: any, options?: { encoding?: string | null, mode?: string | number, flag?: string | number } | string | null): Promise<void>; + + /** + * Asynchronous close(2) - close a `FileHandle`. + */ + close(): Promise<void>; + } + + /** + * Asynchronously tests a user's permissions for the file specified by path. + * @param path A path to a file or directory. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + */ + function access(path: PathLike, mode?: number): Promise<void>; + + /** + * Asynchronously copies `src` to `dest`. By default, `dest` is overwritten if it already exists. + * Node.js makes no guarantees about the atomicity of the copy operation. + * If an error occurs after the destination file has been opened for writing, Node.js will attempt + * to remove the destination. + * @param src A path to the source file. + * @param dest A path to the destination file. + * @param flags An optional integer that specifies the behavior of the copy operation. The only + * supported flag is `fs.constants.COPYFILE_EXCL`, which causes the copy operation to fail if + * `dest` already exists. + */ + function copyFile(src: PathLike, dest: PathLike, flags?: number): Promise<void>; + + /** + * Asynchronous open(2) - open and possibly create a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param mode A file mode. If a string is passed, it is parsed as an octal integer. If not + * supplied, defaults to `0o666`. + */ + function open(path: PathLike, flags: string | number, mode?: string | number): Promise<FileHandle>; + + /** + * Asynchronously reads data from the file referenced by the supplied `FileHandle`. + * @param handle A `FileHandle`. + * @param buffer The buffer that the data will be written to. + * @param offset The offset in the buffer at which to start writing. + * @param length The number of bytes to read. + * @param position The offset from the beginning of the file from which data should be read. If + * `null`, data will be read from the current position. + */ + function read<TBuffer extends Uint8Array>( + handle: FileHandle, + buffer: TBuffer, + offset?: number | null, + length?: number | null, + position?: number | null, + ): Promise<{ bytesRead: number, buffer: TBuffer }>; + + /** + * Asynchronously writes `buffer` to the file referenced by the supplied `FileHandle`. + * It is unsafe to call `fsPromises.write()` multiple times on the same file without waiting for the `Promise` + * to be resolved (or rejected). For this scenario, `fs.createWriteStream` is strongly recommended. + * @param handle A `FileHandle`. + * @param buffer The buffer that the data will be written to. + * @param offset The part of the buffer to be written. If not supplied, defaults to `0`. + * @param length The number of bytes to write. If not supplied, defaults to `buffer.length - offset`. + * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position. + */ + function write<TBuffer extends Uint8Array>( + handle: FileHandle, + buffer: TBuffer, + offset?: number | null, + length?: number | null, position?: number | null): Promise<{ bytesWritten: number, buffer: TBuffer }>; + + /** + * Asynchronously writes `string` to the file referenced by the supplied `FileHandle`. + * It is unsafe to call `fsPromises.write()` multiple times on the same file without waiting for the `Promise` + * to be resolved (or rejected). For this scenario, `fs.createWriteStream` is strongly recommended. + * @param handle A `FileHandle`. + * @param string A string to write. If something other than a string is supplied it will be coerced to a string. + * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position. + * @param encoding The expected string encoding. + */ + function write(handle: FileHandle, string: any, position?: number | null, encoding?: string | null): Promise<{ bytesWritten: number, buffer: string }>; + + /** + * Asynchronous rename(2) - Change the name or location of a file or directory. + * @param oldPath A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * @param newPath A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + */ + function rename(oldPath: PathLike, newPath: PathLike): Promise<void>; + + /** + * Asynchronous truncate(2) - Truncate a file to a specified length. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param len If not specified, defaults to `0`. + */ + function truncate(path: PathLike, len?: number): Promise<void>; + + /** + * Asynchronous ftruncate(2) - Truncate a file to a specified length. + * @param handle A `FileHandle`. + * @param len If not specified, defaults to `0`. + */ + function ftruncate(handle: FileHandle, len?: number): Promise<void>; + + /** + * Asynchronous rmdir(2) - delete a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function rmdir(path: PathLike): Promise<void>; + + /** + * Asynchronous fdatasync(2) - synchronize a file's in-core state with storage device. + * @param handle A `FileHandle`. + */ + function fdatasync(handle: FileHandle): Promise<void>; + + /** + * Asynchronous fsync(2) - synchronize a file's in-core state with the underlying storage device. + * @param handle A `FileHandle`. + */ + function fsync(handle: FileHandle): Promise<void>; + + /** + * Asynchronous mkdir(2) - create a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders + * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`. + */ + function mkdir(path: PathLike, options?: number | string | MakeDirectoryOptions | null): Promise<void>; + + /** + * Asynchronous readdir(3) - read a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function readdir(path: PathLike, options?: { encoding?: BufferEncoding | null; withFileTypes?: false } | BufferEncoding | null): Promise<string[]>; + + /** + * Asynchronous readdir(3) - read a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function readdir(path: PathLike, options: { encoding: "buffer"; withFileTypes?: false } | "buffer"): Promise<Buffer[]>; + + /** + * Asynchronous readdir(3) - read a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function readdir(path: PathLike, options?: { encoding?: string | null; withFileTypes?: false } | string | null): Promise<string[] | Buffer[]>; + + /** + * Asynchronous readdir(3) - read a directory. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options If called with `withFileTypes: true` the result data will be an array of Dirent. + */ + function readdir(path: PathLike, options: { encoding?: string | null; withFileTypes: true }): Promise<Dirent[]>; + + /** + * Asynchronous readlink(2) - read value of a symbolic link. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function readlink(path: PathLike, options?: { encoding?: BufferEncoding | null } | BufferEncoding | null): Promise<string>; + + /** + * Asynchronous readlink(2) - read value of a symbolic link. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function readlink(path: PathLike, options: { encoding: "buffer" } | "buffer"): Promise<Buffer>; + + /** + * Asynchronous readlink(2) - read value of a symbolic link. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function readlink(path: PathLike, options?: { encoding?: string | null } | string | null): Promise<string | Buffer>; + + /** + * Asynchronous symlink(2) - Create a new symbolic link to an existing file. + * @param target A path to an existing file. If a URL is provided, it must use the `file:` protocol. + * @param path A path to the new symlink. If a URL is provided, it must use the `file:` protocol. + * @param type May be set to `'dir'`, `'file'`, or `'junction'` (default is `'file'`) and is only available on Windows (ignored on other platforms). + * When using `'junction'`, the `target` argument will automatically be normalized to an absolute path. + */ + function symlink(target: PathLike, path: PathLike, type?: string | null): Promise<void>; + + /** + * Asynchronous fstat(2) - Get file status. + * @param handle A `FileHandle`. + */ + function fstat(handle: FileHandle): Promise<Stats>; + + /** + * Asynchronous lstat(2) - Get file status. Does not dereference symbolic links. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function lstat(path: PathLike): Promise<Stats>; + + /** + * Asynchronous stat(2) - Get file status. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function stat(path: PathLike): Promise<Stats>; + + /** + * Asynchronous link(2) - Create a new link (also known as a hard link) to an existing file. + * @param existingPath A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param newPath A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function link(existingPath: PathLike, newPath: PathLike): Promise<void>; + + /** + * Asynchronous unlink(2) - delete a name and possibly the file it refers to. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function unlink(path: PathLike): Promise<void>; + + /** + * Asynchronous fchmod(2) - Change permissions of a file. + * @param handle A `FileHandle`. + * @param mode A file mode. If a string is passed, it is parsed as an octal integer. + */ + function fchmod(handle: FileHandle, mode: string | number): Promise<void>; + + /** + * Asynchronous chmod(2) - Change permissions of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param mode A file mode. If a string is passed, it is parsed as an octal integer. + */ + function chmod(path: PathLike, mode: string | number): Promise<void>; + + /** + * Asynchronous lchmod(2) - Change permissions of a file. Does not dereference symbolic links. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param mode A file mode. If a string is passed, it is parsed as an octal integer. + */ + function lchmod(path: PathLike, mode: string | number): Promise<void>; + + /** + * Asynchronous lchown(2) - Change ownership of a file. Does not dereference symbolic links. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function lchown(path: PathLike, uid: number, gid: number): Promise<void>; + + /** + * Asynchronous fchown(2) - Change ownership of a file. + * @param handle A `FileHandle`. + */ + function fchown(handle: FileHandle, uid: number, gid: number): Promise<void>; + + /** + * Asynchronous chown(2) - Change ownership of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + */ + function chown(path: PathLike, uid: number, gid: number): Promise<void>; + + /** + * Asynchronously change file timestamps of the file referenced by the supplied path. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param atime The last access time. If a string is provided, it will be coerced to number. + * @param mtime The last modified time. If a string is provided, it will be coerced to number. + */ + function utimes(path: PathLike, atime: string | number | Date, mtime: string | number | Date): Promise<void>; + + /** + * Asynchronously change file timestamps of the file referenced by the supplied `FileHandle`. + * @param handle A `FileHandle`. + * @param atime The last access time. If a string is provided, it will be coerced to number. + * @param mtime The last modified time. If a string is provided, it will be coerced to number. + */ + function futimes(handle: FileHandle, atime: string | number | Date, mtime: string | number | Date): Promise<void>; + + /** + * Asynchronous realpath(3) - return the canonicalized absolute pathname. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function realpath(path: PathLike, options?: { encoding?: BufferEncoding | null } | BufferEncoding | null): Promise<string>; + + /** + * Asynchronous realpath(3) - return the canonicalized absolute pathname. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function realpath(path: PathLike, options: { encoding: "buffer" } | "buffer"): Promise<Buffer>; + + /** + * Asynchronous realpath(3) - return the canonicalized absolute pathname. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function realpath(path: PathLike, options?: { encoding?: string | null } | string | null): Promise<string | Buffer>; + + /** + * Asynchronously creates a unique temporary directory. + * Generates six random characters to be appended behind a required `prefix` to create a unique temporary directory. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function mkdtemp(prefix: string, options?: { encoding?: BufferEncoding | null } | BufferEncoding | null): Promise<string>; + + /** + * Asynchronously creates a unique temporary directory. + * Generates six random characters to be appended behind a required `prefix` to create a unique temporary directory. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function mkdtemp(prefix: string, options: { encoding: "buffer" } | "buffer"): Promise<Buffer>; + + /** + * Asynchronously creates a unique temporary directory. + * Generates six random characters to be appended behind a required `prefix` to create a unique temporary directory. + * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used. + */ + function mkdtemp(prefix: string, options?: { encoding?: string | null } | string | null): Promise<string | Buffer>; + + /** + * Asynchronously writes data to a file, replacing the file if it already exists. + * It is unsafe to call `fsPromises.writeFile()` multiple times on the same file without waiting for the `Promise` to be resolved (or rejected). + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * If a `FileHandle` is provided, the underlying file will _not_ be closed automatically. + * @param data The data to write. If something other than a `Buffer` or `Uint8Array` is provided, the value is coerced to a string. + * @param options Either the encoding for the file, or an object optionally specifying the encoding, file mode, and flag. + * If `encoding` is not supplied, the default of `'utf8'` is used. + * If `mode` is not supplied, the default of `0o666` is used. + * If `mode` is a string, it is parsed as an octal integer. + * If `flag` is not supplied, the default of `'w'` is used. + */ + function writeFile(path: PathLike | FileHandle, data: any, options?: { encoding?: string | null, mode?: string | number, flag?: string | number } | string | null): Promise<void>; + + /** + * Asynchronously append data to a file, creating the file if it does not exist. + * @param file A path to a file. If a URL is provided, it must use the `file:` protocol. + * URL support is _experimental_. + * If a `FileHandle` is provided, the underlying file will _not_ be closed automatically. + * @param data The data to write. If something other than a `Buffer` or `Uint8Array` is provided, the value is coerced to a string. + * @param options Either the encoding for the file, or an object optionally specifying the encoding, file mode, and flag. + * If `encoding` is not supplied, the default of `'utf8'` is used. + * If `mode` is not supplied, the default of `0o666` is used. + * If `mode` is a string, it is parsed as an octal integer. + * If `flag` is not supplied, the default of `'a'` is used. + */ + function appendFile(path: PathLike | FileHandle, data: any, options?: { encoding?: string | null, mode?: string | number, flag?: string | number } | string | null): Promise<void>; + + /** + * Asynchronously reads the entire contents of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * If a `FileHandle` is provided, the underlying file will _not_ be closed automatically. + * @param options An object that may contain an optional flag. + * If a flag is not provided, it defaults to `'r'`. + */ + function readFile(path: PathLike | FileHandle, options?: { encoding?: null, flag?: string | number } | null): Promise<Buffer>; + + /** + * Asynchronously reads the entire contents of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * If a `FileHandle` is provided, the underlying file will _not_ be closed automatically. + * @param options An object that may contain an optional flag. + * If a flag is not provided, it defaults to `'r'`. + */ + function readFile(path: PathLike | FileHandle, options: { encoding: BufferEncoding, flag?: string | number } | BufferEncoding): Promise<string>; + + /** + * Asynchronously reads the entire contents of a file. + * @param path A path to a file. If a URL is provided, it must use the `file:` protocol. + * If a `FileHandle` is provided, the underlying file will _not_ be closed automatically. + * @param options An object that may contain an optional flag. + * If a flag is not provided, it defaults to `'r'`. + */ + function readFile(path: PathLike | FileHandle, options?: { encoding?: string | null, flag?: string | number } | string | null): Promise<string | Buffer>; + } +} |