From e8a70bd5e1f203d75a2bc31db178a6a322bbefbf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C3=ABl=20Zasso?= <targos@protonmail.com>
Date: Sat, 24 Sep 2016 00:46:03 +0200
Subject: [PATCH] buffer: fix performance regression

V8 5.4 changed the way that the default constructor of derived classes
is called. It introduced a significant performance regression in the
buffer module for the creation of pooled buffers. This commit forces the
definition back to how it was.

Ref: https://bugs.chromium.org/p/v8/issues/detail?id=4890
---
 lib/buffer.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/buffer.js b/lib/buffer.js
index 876bdbe1cfde61..86aa2e512ea352 100644
--- a/lib/buffer.js
+++ b/lib/buffer.js
@@ -6,7 +6,11 @@ const { isArrayBuffer, isSharedArrayBuffer } = process.binding('util');
 const bindingObj = {};
 const internalUtil = require('internal/util');
 
-class FastBuffer extends Uint8Array {}
+class FastBuffer extends Uint8Array {
+  constructor(arg1, arg2, arg3) {
+    super(arg1, arg2, arg3);
+  }
+}
 
 FastBuffer.prototype.constructor = Buffer;
 Buffer.prototype = FastBuffer.prototype;