From 256e7372d4a96079b993115eabde8b33d400c7c8 Mon Sep 17 00:00:00 2001
From: Shin'ya Ueoka <ueokande@i-beam.org>
Date: Sun, 26 Nov 2017 08:25:23 +0900
Subject: settings migration between json and form

---
 src/settings/components/form/blacklist-form.jsx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/settings/components/form')

diff --git a/src/settings/components/form/blacklist-form.jsx b/src/settings/components/form/blacklist-form.jsx
index 9cb547b..4333929 100644
--- a/src/settings/components/form/blacklist-form.jsx
+++ b/src/settings/components/form/blacklist-form.jsx
@@ -34,7 +34,7 @@ class BlacklistForm extends Component {
 
     let name = e.target.name;
     let index = e.target.getAttribute('data-index');
-    let next = this.props.value.slice();
+    let next = this.props.value ? this.props.value.slice() : [];
 
     if (name === 'url') {
       next[index] = e.target.value;
-- 
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