From bca191c2b9e2cf65195bd9226fb1eeb8b47db822 Mon Sep 17 00:00:00 2001
From: Moonchild <moonchild@palemoon.org>
Date: Wed, 19 Jan 2022 13:40:15 +0000
Subject: [PATCH] [network] Add non-overrideable default MIME types for js, jsm
 and json.

This ensures the browser always recognizes these file type extensions
appropriately, even if not otherwise registered in the system.
---
 uriloader/exthandler/nsExternalHelperAppService.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/uriloader/exthandler/nsExternalHelperAppService.cpp b/uriloader/exthandler/nsExternalHelperAppService.cpp
index 02a555f04c..dc7d200041 100644
--- a/uriloader/exthandler/nsExternalHelperAppService.cpp
+++ b/uriloader/exthandler/nsExternalHelperAppService.cpp
@@ -384,6 +384,9 @@ static const nsDefaultMimeTypeEntry defaultMimeEntries[] =
   { "application/xhtml+xml", "xhtml" },
   { "application/xhtml+xml", "xht" },
   { TEXT_PLAIN, "txt" },
+  { APPLICATION_JSON, "json"},
+  { APPLICATION_XJAVASCRIPT, "js"},
+  { APPLICATION_XJAVASCRIPT, "jsm"},
   { VIDEO_OGG, "ogv" },
   { VIDEO_OGG, "ogg" },
   { APPLICATION_OGG, "ogg" },