From 147d187620e49ce5fb3abc9e1c3e1018755d8f02 Mon Sep 17 00:00:00 2001
From: Johannes Odland <johannes.odland@nrk.no>
Date: Tue, 9 Jan 2024 16:21:41 +0100
Subject: [PATCH] Handle explicitly undefined options argument in
 updateTimingHandler (#197)

---
 src/proxy-animation.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/proxy-animation.js b/src/proxy-animation.js
index f6c985a3..a54d0e5b 100644
--- a/src/proxy-animation.js
+++ b/src/proxy-animation.js
@@ -784,7 +784,7 @@ function createProxyEffect(details) {
         return;
 
       // Additional validation that is specific to scroll timelines.
-      if (details.timeline) {
+      if (details.timeline && argumentsList[0]) {
         const options = argumentsList[0];
         const duration = options.duration;
         if (duration === Infinity) {