From 0435acb5ae6fbcb3cbd283382997e926fdbaeb80 Mon Sep 17 00:00:00 2001
From: Sean O'Grady <1761115+seanogdev@users.noreply.github.com>
Date: Sun, 19 Nov 2023 13:48:27 +0000
Subject: [PATCH] #1163@patch: Selection anchorOffset should return a number.

---
 packages/happy-dom/src/selection/Selection.ts       | 2 +-
 packages/happy-dom/test/selection/Selection.test.ts | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/happy-dom/src/selection/Selection.ts b/packages/happy-dom/src/selection/Selection.ts
index 68952f52f..a0b9045c0 100644
--- a/packages/happy-dom/src/selection/Selection.ts
+++ b/packages/happy-dom/src/selection/Selection.ts
@@ -91,7 +91,7 @@ export default class Selection {
 	 */
 	public get anchorOffset(): number {
 		if (!this._range) {
-			return null;
+			return 0;
 		}
 		return this._direction === SelectionDirectionEnum.forwards
 			? this._range.startOffset
diff --git a/packages/happy-dom/test/selection/Selection.test.ts b/packages/happy-dom/test/selection/Selection.test.ts
index e1be6e563..f0c32299b 100644
--- a/packages/happy-dom/test/selection/Selection.test.ts
+++ b/packages/happy-dom/test/selection/Selection.test.ts
@@ -117,8 +117,8 @@ describe('Selection', () => {
 
 	for (const property of ['anchorOffset', 'baseOffset', 'focusOffset', 'extentOffset']) {
 		describe(`get ${property}()`, () => {
-			it('Returns null if no Range has been added.', () => {
-				expect(selection[property]).toBe(null);
+			it('Returns 0 if no Range has been added.', () => {
+				expect(selection[property]).toBe(0);
 			});
 
 			it(`Returns start offset of Range if direction is "${SelectionDirectionEnum.forwards}".`, () => {