From cbfb25d36823708cecbcbc9c681557b88feb5fba Mon Sep 17 00:00:00 2001
From: Katherine Walker <kvwalker@users.noreply.github.com>
Date: Thu, 17 May 2018 15:23:06 -0400
Subject: [PATCH] fix(binary): add type checking for buffer

---
 lib/bson/binary.js | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/lib/bson/binary.js b/lib/bson/binary.js
index b1ccccef..26351917 100644
--- a/lib/bson/binary.js
+++ b/lib/bson/binary.js
@@ -30,6 +30,16 @@ if (typeof global !== 'undefined') {
 function Binary(buffer, subType) {
   if (!(this instanceof Binary)) return new Binary(buffer, subType);
 
+  if (
+    buffer != null &&
+    !(typeof buffer === 'string') &&
+    !Buffer.isBuffer(buffer) &&
+    !(buffer instanceof Uint8Array) &&
+    !Array.isArray(buffer)
+  ) {
+    throw new Error('only String, Buffer, Uint8Array or Array accepted');
+  }
+
   this._bsontype = 'Binary';
 
   if (buffer instanceof Number) {