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# @nodelib/fs.scandir

> List files and directories inside the specified directory.

## :bulb: Highlights

The package is aimed at obtaining information about entries in the directory.

* :moneybag: Returns useful information: `name`, `path`, `dirent` and `stats` (optional).
* :gear: On Node.js 10.10+ uses the mechanism without additional calls to determine the entry type. See [`old` and `modern` mode](#old-and-modern-mode).
* :link: Can safely work with broken symbolic links.

## Install

```console
npm install @nodelib/fs.scandir
```

## Usage

```ts
import * as fsScandir from '@nodelib/fs.scandir';

fsScandir.scandir('path', (error, stats) => { /* … */ });
```

## API

### .scandir(path, [optionsOrSettings], callback)

Returns an array of plain objects ([`Entry`](#entry)) with information about entry for provided path with standard callback-style.

```ts
fsScandir.scandir('path', (error, entries) => { /* … */ });
fsScandir.scandir('path', {}, (error, entries) => { /* … */ });
fsScandir.scandir('path', new fsScandir.Settings(), (error, entries) => { /* … */ });
```

### .scandirSync(path, [optionsOrSettings])

Returns an array of plain objects ([`Entry`](#entry)) with information about entry for provided path.

```ts
const entries = fsScandir.scandirSync('path');
const entries = fsScandir.scandirSync('path', {});
const entries = fsScandir.scandirSync(('path', new fsScandir.Settings());
```

#### path

* Required: `true`
* Type: `string | Buffer | URL`

A path to a file. If a URL is provided, it must use the `file:` protocol.

#### optionsOrSettings

* Required: `false`
* Type: `Options | Settings`
* Default: An instance of `Settings` class

An [`Options`](#options) object or an instance of [`Settings`](#settingsoptions) class.

> :book: When you pass a plain object, an instance of the `Settings` class will be created automatically. If you plan to call the method frequently, use a pre-created instance of the `Settings` class.

### Settings([options])

A class of full settings of the package.

```ts
const settings = new fsScandir.Settings({ followSymbolicLinks: false });

const entries = fsScandir.scandirSync('path', settings);
```

## Entry

* `name` — The name of the entry (`unknown.txt`).
* `path` — The path of the entry relative to call directory (`root/unknown.txt`).
* `dirent` — An instance of [`fs.Dirent`](./src/types/index.ts) class. On Node.js below 10.10 will be emulated by [`DirentFromStats`](./src/utils/fs.ts) class.
* `stats` (optional) — An instance of `fs.Stats` class.

For example, the `scandir` call for `tools` directory with one directory inside:

```ts
{
	dirent: Dirent { name: 'typedoc', /* … */ },
	name: 'typedoc',
	path: 'tools/typedoc'
}
```

## Options

### stats

* Type: `boolean`
* Default: `false`

Adds an instance of `fs.Stats` class to the [`Entry`](#entry).

> :book: Always use `fs.readdir` without the `withFileTypes` option. ??TODO??

### followSymbolicLinks

* Type: `boolean`
* Default: `false`

Follow symbolic links or not. Call `fs.stat` on symbolic link if `true`.

### `throwErrorOnBrokenSymbolicLink`

* Type: `boolean`
* Default: `true`

Throw an error when symbolic link is broken if `true` or safely use `lstat` call if `false`.

### `pathSegmentSeparator`

* Type: `string`
* Default: `path.sep`

By default, this package uses the correct path separator for your OS (`\` on Windows, `/` on Unix-like systems). But you can set this option to any separator character(s) that you want to use instead.

### `fs`

* Type: [`FileSystemAdapter`](./src/adapters/fs.ts)
* Default: A default FS methods

By default, the built-in Node.js module (`fs`) is used to work with the file system. You can replace any method with your own.

```ts
interface FileSystemAdapter {
	lstat?: typeof fs.lstat;
	stat?: typeof fs.stat;
	lstatSync?: typeof fs.lstatSync;
	statSync?: typeof fs.statSync;
	readdir?: typeof fs.readdir;
	readdirSync?: typeof fs.readdirSync;
}

const settings = new fsScandir.Settings({
	fs: { lstat: fakeLstat }
});
```

## `old` and `modern` mode

This package has two modes that are used depending on the environment and parameters of use.

### old

* Node.js below `10.10` or when the `stats` option is enabled

When working in the old mode, the directory is read first (`fs.readdir`), then the type of entries is determined (`fs.lstat` and/or `fs.stat` for symbolic links).

### modern

* Node.js 10.10+ and the `stats` option is disabled

In the modern mode, reading the directory (`fs.readdir` with the `withFileTypes` option) is combined with obtaining information about its entries. An additional call for symbolic links (`fs.stat`) is still present.

This mode makes fewer calls to the file system. It's faster.

## Changelog

See the [Releases section of our GitHub project](https://github.com/nodelib/nodelib/releases) for changelog for each release version.

## License

This software is released under the terms of the MIT license.