From 147b14dc7d07e0f481550a0783c048701aef5b97 Mon Sep 17 00:00:00 2001
From: Robert Nagy <ronagy@icloud.com>
Date: Sun, 28 Jul 2024 23:14:29 +0200
Subject: [PATCH] buffer: use native copy impl

---
 lib/buffer.js | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/lib/buffer.js b/lib/buffer.js
index 59a125960c276f..19261b9ad26e75 100644
--- a/lib/buffer.js
+++ b/lib/buffer.js
@@ -58,6 +58,7 @@ const {
   byteLengthUtf8,
   compare: _compare,
   compareOffset,
+  copyArrayBuffer,
   createFromString,
   fill: bindingFill,
   isAscii: bindingIsAscii,
@@ -248,10 +249,17 @@ function _copyActual(source, target, targetStart, sourceStart, sourceEnd) {
   if (nb > sourceLen)
     nb = sourceLen;
 
-  if (sourceStart !== 0 || sourceEnd < source.length)
-    source = new Uint8Array(source.buffer, source.byteOffset + sourceStart, nb);
-
-  TypedArrayPrototypeSet(target, source, targetStart);
+  if (sourceStart !== 0 || sourceEnd < source.length) {
+    copyArrayBuffer(
+      target.buffer,
+      target.byteOffset + targetStart,
+      source.buffer,
+      source.byteOffset + sourceStart,
+      nb,
+    );
+  } else {
+    TypedArrayPrototypeSet(target, source, targetStart);
+  }
 
   return nb;
 }