From 35a5d8bba93ba24d53c9c829b85935a8e83f4a85 Mon Sep 17 00:00:00 2001
From: yujiosaka <yuji.isobe@emin.co.jp>
Date: Thu, 28 Dec 2017 12:00:37 +0900
Subject: [PATCH] chore(NavigationWatcher): correct closure annotation (#1658)

---
 lib/NavigatorWatcher.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/NavigatorWatcher.js b/lib/NavigatorWatcher.js
index 4ea721e4..4a1c9411 100644
--- a/lib/NavigatorWatcher.js
+++ b/lib/NavigatorWatcher.js
@@ -60,7 +60,7 @@ class NavigatorWatcher {
   }
 
   /**
-   * @return {?Promise<?Error>}
+   * @return {!Promise<?Error>}
    */
   _createTimeoutPromise() {
     if (!this._timeout)