From: Volker Mische <volker.mische@gmail.com>
Date: Sun, 21 Jan 2018 00:34:50 +0000 (+0100)
Subject: Add .offset property
X-Git-Url: https://zoso.dev/?a=commitdiff_plain;h=7d18659634e3c44db3692f03a4e84a37e3bcc426;p=buffer.git

Add .offset property
---

diff --git a/index.js b/index.js
index f8f5184..c4576d7 100644
--- a/index.js
+++ b/index.js
@@ -53,6 +53,16 @@ function typedArraySupport () {
   }
 }
 
+Object.defineProperty(Buffer.prototype, 'offset', {
+  enumerable: true,
+  get () {
+    if (!(this instanceof Buffer)) {
+      return undefined
+    }
+    return this.byteOffset
+  }
+})
+
 function createBuffer (length) {
   if (length > K_MAX_LENGTH) {
     throw new RangeError('Invalid typed array length')
diff --git a/test/node/test-buffer-alloc.js b/test/node/test-buffer-alloc.js
index bbba135..9802b52 100644
--- a/test/node/test-buffer-alloc.js
+++ b/test/node/test-buffer-alloc.js
@@ -32,7 +32,7 @@ assert.strictEqual(0, d.length);
   var b = Buffer.alloc(128);
   assert.strictEqual(128, b.length);
   assert.strictEqual(0, b.byteOffset);
-  //assert.strictEqual(0, b.offset);
+  assert.strictEqual(0, b.offset);
 }
 
 // Test creating a Buffer from a Uint32Array