From ca57920edb56000bfc87bb64f4e5e3450c03e13a Mon Sep 17 00:00:00 2001
From: Evan You <yyx990803@gmail.com>
Date: Thu, 7 Feb 2019 10:17:28 -0500
Subject: [PATCH] fix: avoid logging same error twice when thrown by user in
 global handler

fix #9445
---
 src/core/util/error.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/core/util/error.js b/src/core/util/error.js
index 6110639e..e4604ecf 100644
--- a/src/core/util/error.js
+++ b/src/core/util/error.js
@@ -49,7 +49,11 @@ function globalHandleError (err, vm, info) {
     try {
       return config.errorHandler.call(null, err, vm, info)
     } catch (e) {
-      logError(e, null, 'config.errorHandler')
+      // if the user intentionally throws the original error in the handler,
+      // do not log it twice
+      if (e !== err) {
+        logError(e, null, 'config.errorHandler')
+      }
     }
   }
   logError(err, vm, info)