buffer: optimize for common encodings

PR-URL: #54319 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Bryan English <[email protected]>
nodejs · Oct 2, 2024 · f5f40c8 · f5f40c8
1 parent 27da75a
commit f5f40c8
Showing 1 changed file with 3 additions and 1 deletion.
diff --git 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)