From f5f40c808858abfc30daba71207150b7b68a36fc Mon Sep 17 00:00:00 2001
From: Robert Nagy <ronagy@icloud.com>
Date: Tue, 13 Aug 2024 18:19:05 +0200
Subject: [PATCH] buffer: optimize for common encodings

PR-URL: https://github.com/nodejs/node/pull/54319
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Bryan English <bryan@bryanenglish.com>
---
 lib/buffer.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/buffer.js b/lib/buffer.js
index 591d13537990ce..6faab3096542d4 100644
--- a/lib/buffer.js
+++ b/lib/buffer.js
@@ -1106,8 +1106,10 @@ Buffer.prototype.write = function write(string, offset, length, encoding) {
     }
   }
 
-  if (!encoding)
+  if (!encoding || encoding === 'utf8')
     return this.utf8Write(string, offset, length);
+  if (encoding === 'ascii')
+    return this.asciiWrite(string, offset, length);
 
   const ops = getEncodingOps(encoding);
   if (ops === undefined)