From 866b07d3b9379b4462134119d68209c19b584ebf Mon Sep 17 00:00:00 2001
From: Bao Dang <dangvinhbao@gmail.com>
Date: Tue, 5 Jul 2016 07:31:23 +1000
Subject: [PATCH] Check theme[key] is a string

---
 src/components/themr.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/components/themr.js b/src/components/themr.js
index 72c3224..0673342 100644
--- a/src/components/themr.js
+++ b/src/components/themr.js
@@ -60,7 +60,7 @@ export default (componentName, localTheme, options = DEFAULT_OPTIONS) => (Themed
 function themeable(style = {}, theme) {
   if (!theme) return style
   return [ ...Object.keys(theme), ...Object.keys(style) ].reduce((result, key) => (
-    theme[key] && style[key] && theme[key].indexOf(style[key]) === -1
+    typeof theme[key] === 'string' && style[key] && theme[key].indexOf(style[key]) === -1
       ? { ...result, [key]: `${style[key]} ${theme[key]}` }
       : { ...result, [key]: theme[key] || style[key] }
   ), {})