From 31ad6f168b839f80b8f17ed4cafba983a88aba3b Mon Sep 17 00:00:00 2001
From: Vladimir Pasquier <vpasquier@nuxeo.com>
Date: Mon, 6 Jun 2016 16:42:48 -0400
Subject: [PATCH] 790: Avoid rightButtonImage or rightTitle warnings when set
 to null

---
 src/NavBar.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/NavBar.js b/src/NavBar.js
index 1629ea908..4ba60d66b 100644
--- a/src/NavBar.js
+++ b/src/NavBar.js
@@ -242,7 +242,8 @@ class NavBar extends React.Component {
           </TouchableOpacity>
         );
       }
-      if ((!!state.onRight ^ !!(state.rightTitle || state.rightButtonImage))) {
+      if ((!!state.onRight ^ !!(typeof(state.rightTitle) !== 'undefined'
+        || typeof(state.rightButtonImage) !== 'undefined'))) {
         console.warn(
           `Both onRight and rightTitle/rightButtonImage
             must be specified for the scene: ${state.name}`