From 25a07d92d0b3127aa8b47cce776a4382341a1551 Mon Sep 17 00:00:00 2001
From: Jonas Jenwald <jonas.jenwald@gmail.com>
Date: Thu, 22 Jun 2023 15:02:54 +0200
Subject: [PATCH] [Firefox] Stub out the `isValidFetchUrl` function in
 MOZCENTRAL builds

This helper function is completely unused in the Firefox PDF Viewer.
---
 src/display/display_utils.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/display/display_utils.js b/src/display/display_utils.js
index 2ff4860f2..fe51836ff 100644
--- a/src/display/display_utils.js
+++ b/src/display/display_utils.js
@@ -697,6 +697,9 @@ class StatTimer {
 }
 
 function isValidFetchUrl(url, baseUrl) {
+  if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("MOZCENTRAL")) {
+    throw new Error("Not implemented: isValidFetchUrl");
+  }
   try {
     const { protocol } = baseUrl ? new URL(url, baseUrl) : new URL(url);
     // The Fetch API only supports the http/https protocols, and not file/ftp.