From 0b7a2fd197a2b961f3a7a2c00819f2c4022bbcc0 Mon Sep 17 00:00:00 2001
From: Ajay <dev@ajay.app>
Date: Tue, 13 Feb 2024 22:32:37 -0500
Subject: [PATCH] Fix adding custom Invidious instances on Firefox

Fixes #815
---
 src/background.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/background.ts b/src/background.ts
index 812482af..23914f46 100644
--- a/src/background.ts
+++ b/src/background.ts
@@ -160,8 +160,8 @@ async function registerFirefoxContentScript(options: Registration) {
             ids: [options.id]
         }).catch(() => []);
 
-        if (existingRegistrations.length > 0 
-            && existingRegistrations[0].matches.every((match) => options.matches.includes(match))) {
+        if (existingRegistrations && existingRegistrations.length > 0 
+            && options.matches.every((match) => existingRegistrations[0].matches.includes(match))) {
             // No need to register another script, already registered
             return;
         }