From 02a4713375e28aae386d3e2e05289623ee3fb0ba Mon Sep 17 00:00:00 2001
From: ULIVZ <472590061@qq.com>
Date: Fri, 10 Aug 2018 00:22:19 +0800
Subject: [PATCH] fix: navbar's regression - siteName null check

---
 lib/default-theme/Navbar.vue | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/default-theme/Navbar.vue b/lib/default-theme/Navbar.vue
index 6ad9bb2098..12795665b7 100644
--- a/lib/default-theme/Navbar.vue
+++ b/lib/default-theme/Navbar.vue
@@ -58,7 +58,8 @@ export default {
       if (document.documentElement.clientWidth < MOBILE_DESKTOP_BREAKPOINT) {
         this.linksWrapMaxWidth = null
       } else {
-        this.linksWrapMaxWidth = this.$el.offsetWidth - NAVBAR_VERTICAL_PADDING - this.$refs.siteName.offsetWidth
+        this.linksWrapMaxWidth = this.$el.offsetWidth - NAVBAR_VERTICAL_PADDING -
+          (this.$refs.siteName && this.$refs.siteName.offsetWidth || 0)
       }
     }
     handleLinksWrapWidth()