From d91f4d1ac79bd24768a03bc9cbb26867c586d484 Mon Sep 17 00:00:00 2001
From: pilar6195 <pilar6195@pilar.moe>
Date: Mon, 1 Jul 2024 15:27:27 -0500
Subject: [PATCH] feat: prevent multiple instances of the script from running

---
 src/anilist-extras.user.ts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/anilist-extras.user.ts b/src/anilist-extras.user.ts
index a711720..79bb50c 100644
--- a/src/anilist-extras.user.ts
+++ b/src/anilist-extras.user.ts
@@ -10,6 +10,14 @@ import '@/modules/modulesList';
 /* Import Global Styles */
 import globalStyles from '@/styles/global.scss';
 
+// @ts-expect-error - This is fine.
+if (document.ALEXTRAS_LOADED) {
+	throw new Error('AniList Extras is already loaded. Ensure you are not running multiple instances of the script.');
+}
+
+// @ts-expect-error - This is fine.
+document.ALEXTRAS_LOADED = true;
+
 /* Add Global Styles to DOM */
 addStyles(globalStyles);