From 109c393cc6ee0cb1fc7fe097645cd4ddf1bf980a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=8A=B1=E8=A3=A4=E8=A1=A9?= <panfree23@gmail.com>
Date: Mon, 14 Jan 2019 14:07:56 +0800
Subject: [PATCH] fix[ThemePicker]: fixed bug when oldVal is null (#1517)

---
 src/components/ThemePicker/index.vue | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/components/ThemePicker/index.vue b/src/components/ThemePicker/index.vue
index e797d6c2..5d1ff8bd 100644
--- a/src/components/ThemePicker/index.vue
+++ b/src/components/ThemePicker/index.vue
@@ -18,7 +18,8 @@ export default {
     }
   },
   watch: {
-    theme(val, oldVal) {
+    theme(val) {
+      const oldVal = this.theme
       if (typeof val !== 'string') return
       const themeCluster = this.getThemeCluster(val.replace('#', ''))
       const originalCluster = this.getThemeCluster(oldVal.replace('#', ''))