From: Feross Aboukhadijeh <feross@feross.org>
Date: Wed, 16 Sep 2015 05:29:21 +0000 (-0700)
Subject: Add `instanceof Buffer` support (fix #40)
X-Git-Url: https://zoso.dev/?a=commitdiff_plain;h=1d20f50f8b4c62779c0dbfb1fa401168ab52dce0;p=buffer.git

Add `instanceof Buffer` support (fix #40)
---

diff --git a/index.js b/index.js
index 1ff1731..5a68f2c 100644
--- a/index.js
+++ b/index.js
@@ -4,6 +4,7 @@
  * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
  * @license  MIT
  */
+/* eslint-disable no-proto */
 
 var base64 = require('base64-js')
 var ieee754 = require('ieee754')
@@ -214,10 +215,16 @@ function fromJsonObject (that, object) {
   return that
 }
 
+if (Buffer.TYPED_ARRAY_SUPPORT) {
+  Buffer.prototype.__proto__ = Uint8Array.prototype
+  Buffer.__proto__ = Uint8Array
+}
+
 function allocate (that, length) {
   if (Buffer.TYPED_ARRAY_SUPPORT) {
     // Return an augmented `Uint8Array` instance, for best performance
     that = Buffer._augment(new Uint8Array(length))
+    that.__proto__ = Buffer.prototype
   } else {
     // Fallback: Return an object instance of the Buffer class
     that.length = length
diff --git a/test/basic.js b/test/basic.js
index de47970..f093f8e 100644
--- a/test/basic.js
+++ b/test/basic.js
@@ -8,6 +8,12 @@ test('buf.constructor is Buffer', function (t) {
   t.end()
 })
 
+test('instanceof Buffer', function (t) {
+  var buf = new B([1, 2])
+  t.ok(buf instanceof B)
+  t.end()
+})
+
 test('convert to Uint8Array in modern browsers', function (t) {
   if (B.TYPED_ARRAY_SUPPORT) {
     var buf = new B([1, 2])