From 12c49aa04430345b6d9f03f553f3b003e430466b Mon Sep 17 00:00:00 2001
From: Robbert Feunekes <6520064+Muukuro@users.noreply.github.com>
Date: Fri, 3 Jul 2020 14:28:34 +0200
Subject: [PATCH] Fixed: Cannot set property 'isReadOnly' of null

When the prop `disabled` is mutated AFTER the component has mounted, but BEFORE `this.editor.create` is resolved, this results in an error "TypeError: Cannot set property 'isReadOnly' of null". Checking if the instance is successfully initialized prevents this error.
---
 src/ckeditor.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/ckeditor.js b/src/ckeditor.js
index 9a25f00..0250037 100644
--- a/src/ckeditor.js
+++ b/src/ckeditor.js
@@ -121,7 +121,9 @@ export default {
 
 		// Synchronize changes of #disabled.
 		disabled( val ) {
-			this.instance.isReadOnly = val;
+			if (this.instance) {	
+				this.instance.isReadOnly = val;
+			}
 		}
 	},