From 4c1ae8f3ce38aa1b34cd6ab95267a7edf8c41ade Mon Sep 17 00:00:00 2001
From: Syed Husain <syed.husain@appspace.com>
Date: Thu, 30 Jul 2020 19:43:04 +0800
Subject: [PATCH] Check if key is a string before attempt --plyr checking

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

diff --git a/src/js/ui.js b/src/js/ui.js
index d3d6fd69..fd27e2bc 100644
--- a/src/js/ui.js
+++ b/src/js/ui.js
@@ -270,7 +270,7 @@ const ui = {
     // Loop through values (as they are the keys when the object is spread 🤔)
     Object.values({ ...this.media.style })
       // We're only fussed about Plyr specific properties
-      .filter(key => !is.empty(key) && key.startsWith('--plyr'))
+      .filter(key => !is.empty(key) && is.string(key) && key.startsWith('--plyr'))
       .forEach(key => {
         // Set on the container
         this.elements.container.style.setProperty(key, this.media.style.getPropertyValue(key));