From 5ef9a2bd259a1f42d1d6df72b876180547c20f2b Mon Sep 17 00:00:00 2001
From: Cody Bennett <hi@codyb.co>
Date: Mon, 9 Oct 2023 03:38:15 -0500
Subject: [PATCH] VRButton: test navigator for SSR (#26915)

---
 examples/jsm/webxr/VRButton.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/jsm/webxr/VRButton.js b/examples/jsm/webxr/VRButton.js
index 6856a21b17aa45..81a67f06d172ed 100644
--- a/examples/jsm/webxr/VRButton.js
+++ b/examples/jsm/webxr/VRButton.js
@@ -176,7 +176,7 @@ class VRButton {
 
 	static registerSessionGrantedListener() {
 
-		if ( 'xr' in navigator ) {
+		if ( typeof navigator !== 'undefined' && 'xr' in navigator ) {
 
 			// WebXRViewer (based on Firefox) has a bug where addEventListener
 			// throws a silent exception and aborts execution entirely.