From 6a9db2ebdb2af2655328e2c9e24a02486994baff Mon Sep 17 00:00:00 2001
From: Henadzi <74081058+Gena888@users.noreply.github.com>
Date: Tue, 2 Nov 2021 21:52:43 +0300
Subject: [PATCH] doc: add explicit declaration of fd with null val
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In example of implementing a writable stream with extending on
Writable add explicit declaration of 'fd' (file descriptor)
variable with null value.
It will make this example more similar to readable stream's one.
And will make it easier to figure out in topic.

PR-URL: https://github.com/nodejs/node/pull/40704
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Minwoo Jung <nodecorelab@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
---
 doc/api/stream.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/doc/api/stream.md b/doc/api/stream.md
index 1c1aa9289f0aa3..a461eb2aef41e4 100644
--- a/doc/api/stream.md
+++ b/doc/api/stream.md
@@ -2470,6 +2470,7 @@ class WriteStream extends Writable {
   constructor(filename) {
     super();
     this.filename = filename;
+    this.fd = null;
   }
   _construct(callback) {
     fs.open(this.filename, (err, fd) => {