From fbda6e3b2b54da6d32a93eda7794d5554f1eacf2 Mon Sep 17 00:00:00 2001
From: Christoph Schlosser <christoph@linux.com>
Date: Mon, 25 Jun 2018 11:21:41 +0200
Subject: Check if editor and event are undefined

---
 src/CodeParserController.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/CodeParserController.ts b/src/CodeParserController.ts
index 04928e8..8be7034 100644
--- a/src/CodeParserController.ts
+++ b/src/CodeParserController.ts
@@ -57,7 +57,8 @@ export default class CodeParserController {
      ***************************************************************************/
 
     private check(activeEditor: TextEditor, event: TextDocumentContentChangeEvent): boolean {
-        if (activeEditor == null || event.text == null) {
+        if (activeEditor === undefined || activeEditor == null ||
+            event === undefined || event.text == null) {
             return false;
         }
         const activeSelection: Position = activeEditor.selection.active;
-- 
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