From 0ef21a5386edfa8f1a532264ea469d8430d2d402 Mon Sep 17 00:00:00 2001
From: zepumph <michael.kauzmann@colorado.edu>
Date: Tue, 16 Feb 2021 19:28:13 -0900
Subject: [PATCH] support a null pointer to check isTouchLike,
 https://github.com/phetsims/scenery/issues/1156

---
 js/HomeScreenButton.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/js/HomeScreenButton.js b/js/HomeScreenButton.js
index 4f42f8f4..18ab7c60 100644
--- a/js/HomeScreenButton.js
+++ b/js/HomeScreenButton.js
@@ -170,7 +170,7 @@ class HomeScreenButton extends VBox {
     // touchover, in which case we need to guard on touchdown since we don't want to double fire for touchover and
     // touchdown, see https://github.com/phetsims/joist/issues/624
     const buttonDown = () => {
-      if ( isSelectedProperty.value && ( !( fireListener.pointer.isTouchLike() ) || buttonWasAlreadySelected ) ) {
+      if ( isSelectedProperty.value && ( !( fireListener.pointer && fireListener.pointer.isTouchLike() ) || buttonWasAlreadySelected ) ) {
         homeScreenModel.screenProperty.value = screen;
       }
       else {