doc: add withFileTypes option to fsPromises.readdir

PR-URL: #22833
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

Author: bengl

doc/api/fs.md

@@ -4191,11 +4191,16 @@ a colon, Node.js will open a file system stream, as described by
 ### fsPromises.readdir(path[, options])
 <!-- YAML
 added: v10.0.0
+changes:
+  - version: REPLACEME
+    pr-url: https://github.com/nodejs/node/pull/22020
+    description: New option `withFileTypes` was added.
 -->
 
 * `path` {string|Buffer|URL}
 * `options` {string|Object}
   * `encoding` {string} **Default:** `'utf8'`
+  * `withFileTypes` {boolean} **Default:** `false`
 * Returns: {Promise}
 
 Reads the contents of a directory then resolves the `Promise` with an array
@@ -4206,6 +4211,9 @@ object with an `encoding` property specifying the character encoding to use for
 the filenames. If the `encoding` is set to `'buffer'`, the filenames returned
 will be passed as `Buffer` objects.
 
+If `options.withFileTypes` is set to `true`, the resolved array will contain
+[`fs.Dirent`][] objects.
+
 ### fsPromises.readFile(path[, options])
 <!-- YAML
 added: v10.0.0