From ed421855d70c64f55a5cb15a1a46798457697d3e Mon Sep 17 00:00:00 2001
From: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>
Date: Sat, 21 Jan 2023 04:06:06 -0800
Subject: [buffer] Add faster path for Uint8Array

---
 src/bun.js/builtins/js/JSBufferConstructor.js | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/bun.js/builtins/js/JSBufferConstructor.js')

diff --git a/src/bun.js/builtins/js/JSBufferConstructor.js b/src/bun.js/builtins/js/JSBufferConstructor.js
index 9f61220cc..4c3650360 100644
--- a/src/bun.js/builtins/js/JSBufferConstructor.js
+++ b/src/bun.js/builtins/js/JSBufferConstructor.js
@@ -36,6 +36,12 @@ function from(items) {
       "The first argument must be one of type string, Buffer, ArrayBuffer, Array, or Array-like Object.",
     );
 
+  if (@argumentCount() === 1 && @isTypedArrayView(items)) {
+    var out = this.allocUnsafe(items.byteLength);
+    out.copy(items);
+    return out;
+  }
+
   // TODO: figure out why private symbol not found
   if (
     typeof items === "string" ||
-- 
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