From 2ee04e0cf0df75201503a3e6abe868f5a1ad5a2f Mon Sep 17 00:00:00 2001
From: Chris LaFreniere <40371649+chlafreniere@users.noreply.github.com>
Date: Thu, 17 Oct 2019 18:24:30 -0700
Subject: [PATCH] null checks for onBeforeDetached (#7782)

---
 .../workbench/parts/notebook/browser/models/notebookInput.ts    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/sql/workbench/parts/notebook/browser/models/notebookInput.ts b/src/sql/workbench/parts/notebook/browser/models/notebookInput.ts
index a986574f15..c1b12a75f4 100644
--- a/src/sql/workbench/parts/notebook/browser/models/notebookInput.ts
+++ b/src/sql/workbench/parts/notebook/browser/models/notebookInput.ts
@@ -398,7 +398,7 @@ export class NotebookInput extends EditorInput {
 	}
 
 	public dispose(): void {
-		if (this._model) {
+		if (this._model && this._model.editorModel && this._model.editorModel.textEditorModel) {
 			this._model.editorModel.textEditorModel.onBeforeDetached();
 		}
 		this._disposeContainer();