From 1109123145f1cc2671b29f7e5ff324e92da8cfd8 Mon Sep 17 00:00:00 2001
From: Fawad Mirzad <mirzad@arndtteunissen.de>
Date: Thu, 29 Apr 2021 02:52:31 +0200
Subject: [PATCH] Fix console errors in some cases

---
 src/utils/mountableMixin.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/utils/mountableMixin.js b/src/utils/mountableMixin.js
index dea0db0..a4a11e3 100644
--- a/src/utils/mountableMixin.js
+++ b/src/utils/mountableMixin.js
@@ -28,6 +28,9 @@ export default {
     _resizeCallback() {
       this.resize()
     },
+    isFunction(functionToCheck) {
+      return functionToCheck && {}.toString.call(functionToCheck) === '[object Function]';
+    },
     _delayedResizeCallback() {
       this.$nextTick(() => this._resizeCallback())
     },
@@ -49,7 +52,7 @@ export default {
   },
 
   unmounted() {
-    if (this.$data._actualResizeBus) {
+    if (this.$data._actualResizeBus && this.isFunction(this.$data._actualResizeBus.$off)) {
       this.$data._actualResizeBus.$off('resize', this._delayedResizeCallback)
     }
   },