From 4a28dd0e4ab71bb1fdf4d0bf83219326832c8b37 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=8E=E8=B2=8C?= <710898853@qq.com>
Date: Tue, 23 Jan 2018 15:35:46 +0800
Subject: [PATCH] Update index.js

fix bug
---
 index.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/index.js b/index.js
index babd093..d7f050d 100644
--- a/index.js
+++ b/index.js
@@ -91,7 +91,7 @@ function diffContents(contents1, contents2, appendFn) {
 
     processContents(subSet1, subSet2, appendFn);
 
-    if (contents1[0] || contents2[0])
+    if (contents1[0] !== undefined || contents2[0] !== undefined)
         diffContents(contents1, contents2, appendFn);
 }
 
@@ -133,4 +133,4 @@ function processContents(contents1, contents2, appendFn) {
 
         if (result) appendFn(result);
     }
-}
\ No newline at end of file
+}