From 3dabd92bd17c8a9d36eb19f398b74c04ebaa59bb Mon Sep 17 00:00:00 2001
From: Cefn Hoile <github.com@cefn.com>
Date: Mon, 12 Nov 2018 16:00:50 +0000
Subject: [PATCH] Fix handling of Vary Headers in Redis Backend

This should fix the bug documented at https://github.com/gitterHQ/request-http-cache/issues/12 which ensures that all resources without Vary headers cannot be cached at all by the Redis backend.
---
 lib/redis-backend.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/redis-backend.js b/lib/redis-backend.js
index 1a170a8..dc48d6d 100644
--- a/lib/redis-backend.js
+++ b/lib/redis-backend.js
@@ -17,8 +17,8 @@ var JSONBSerializer = require('./jsonb-serializer');
 var NullCompressor = require('./null-compressor');
 
 function bufferToString(buffer) {
-  if (!buffer) return null;
   if (typeof buffer === 'string') return buffer;
+  if (!buffer) return null;
 
   return buffer.toString('utf8');
 }