From 68a79e34545f161f8ff7e8d23a8a2b65b886053a Mon Sep 17 00:00:00 2001
From: Jeff Garzik <jeff@bloq.com>
Date: Mon, 20 Mar 2017 12:34:35 -0400
Subject: [PATCH] lib/util/preconditions: Directly use Buffer.isBuffer
 (Cordova, RN workaround)

Using "./buffer" fails on some browserify-esque platforms
such as Cordova and React.Native.

Fixes #108
---
 lib/util/preconditions.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/util/preconditions.js b/lib/util/preconditions.js
index 25a33b0..43afc04 100644
--- a/lib/util/preconditions.js
+++ b/lib/util/preconditions.js
@@ -18,8 +18,8 @@ module.exports = {
     argumentName = argumentName || '(unknown name)';
     if (_.isString(type)) {
       if (type === 'Buffer') {
-        var BufferUtil = require('./buffer');
-        if (!BufferUtil.isBuffer(argument)) {
+        var buffer = require('buffer'); // './buffer' fails on cordova & RN
+        if (!buffer.Buffer.isBuffer(argument)) {
           throw new errors.InvalidArgumentType(argument, type, argumentName);
         }
       } else if (typeof argument !== type) {