fix(filtering): guard cosmetic filter against duplicate injection

Prevents duplicate CosmeticFilter variable declaration when script
is injected across multiple frames. Adds window.__DUMBER_COSMETIC_LOADED
guard to ensure single initialization per page.

Fixes JavaScript errors breaking sites with Arkose Labs bot detection.

commit: 16fcc8da5807c267a37bcc8c7cbcb734bdda38fd
author: bamen · 12mo ago · 2025-10-08 06:44 UTC
parent: 2b5a473
signature: unsigned

1 file · +7 -1

M internal/filtering/cosmetic/injector.js +7 -1

@@ -1,3 +1,7 @@
	1	+	// Guard against duplicate injection in multiple frames
	2	+	if (typeof window.__DUMBER_COSMETIC_LOADED === 'undefined') {
	3	+	window.__DUMBER_COSMETIC_LOADED = true;
	4	+
1	5		const CosmeticFilter = (() => {
2	6		const hiddenElements = new WeakSet();
3	7		const selectors = {

@@ -236,4 +240,6 @@ const CosmeticFilter = (() => {
236	240		// Inject rules from native
237	241		window.__dumber_cosmetic_init = (rules) => CosmeticFilter.init(rules);
238	242		window.__dumber_cosmetic_update = (rules) => CosmeticFilter.updateRules(rules);
239		-	window.__dumber_cosmetic_cleanup = () => CosmeticFilter.cleanup();⏎̸
	243	+	window.__dumber_cosmetic_cleanup = () => CosmeticFilter.cleanup();
	244	+
	245	+	} // End guard against duplicate injection⏎̸

+// Guard against duplicate injection in multiple frames
+if (typeof window.__DUMBER_COSMETIC_LOADED === 'undefined') {
+window.__DUMBER_COSMETIC_LOADED = true;
 const CosmeticFilter = (() => {
     const hiddenElements = new WeakSet();
     const selectors = {
 // Inject rules from native
 window.__dumber_cosmetic_init = (rules) => CosmeticFilter.init(rules);
 window.__dumber_cosmetic_update = (rules) => CosmeticFilter.updateRules(rules);
-window.__dumber_cosmetic_cleanup = () => CosmeticFilter.cleanup();⏎̸
+window.__dumber_cosmetic_cleanup = () => CosmeticFilter.cleanup();
+} // End guard against duplicate injection⏎̸