From d1e0f9812c5f47ef91660860b4b9bb56a5d4b20c Mon Sep 17 00:00:00 2001
From: Sam Hulick <ffxsam@users.noreply.github.com>
Date: Mon, 22 Apr 2019 01:38:36 -0500
Subject: [PATCH] Tabs: Fixed issue where Promise rejection was hitting
 application (#14816)

---
 packages/tabs/src/tabs.vue | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/packages/tabs/src/tabs.vue b/packages/tabs/src/tabs.vue
index 45cad6903..733fbb831 100644
--- a/packages/tabs/src/tabs.vue
+++ b/packages/tabs/src/tabs.vue
@@ -92,11 +92,14 @@
         if (this.currentName !== value && this.beforeLeave) {
           const before = this.beforeLeave(value, this.currentName);
           if (before && before.then) {
-            before.then(() => {
-              changeCurrentName();
-
-              this.$refs.nav && this.$refs.nav.removeFocus();
-            });
+            before
+              .then(() => {
+                changeCurrentName();
+                this.$refs.nav && this.$refs.nav.removeFocus();
+              }, () => {
+                // https://github.com/ElemeFE/element/pull/14816
+                // ignore promise rejection in `before-leave` hook
+              });
           } else if (before !== false) {
             changeCurrentName();
           }