From 53feb3f6992bb0e59139400cebf4724982ffa482 Mon Sep 17 00:00:00 2001
From: Toru Yoshikawa <pikotea@gmail.com>
Date: Thu, 16 Mar 2017 02:27:45 +0900
Subject: [PATCH] fix(infinite-scroll): event.timeStamp polyfill for firefox
 (#10752)

* Event.timeStamp polyfill for firefox

* fix(infinite-scroll): event.timeStamp polyfill for firefox
---
 src/util/scroll-view.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/util/scroll-view.ts b/src/util/scroll-view.ts
index d9a5b9ca4e..14229b15cc 100644
--- a/src/util/scroll-view.ts
+++ b/src/util/scroll-view.ts
@@ -76,6 +76,10 @@ export class ScrollView {
 
     function scrollCallback(scrollEvent: UIEvent) {
       ev.timeStamp = scrollEvent.timeStamp;
+      // Event.timeStamp is 0 in firefox
+      if (!ev.timeStamp) {
+        ev.timeStamp = Date.now();
+      }
 
       // get the current scrollTop
       // ******** DOM READ ****************