From e8de28b335952398431bb09f3bb42445828f3990 Mon Sep 17 00:00:00 2001
From: dodo-md <dodoznq+github@gmail.com>
Date: Sat, 12 Sep 2026 22:22:20 +0300
Subject: [PATCH 1/3] gh-15387: Fix #writeToDom crash when mod has checkbox
 preferences

---
 src/zen/mods/ZenMods.mjs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/zen/mods/ZenMods.mjs b/src/zen/mods/ZenMods.mjs
index 11c002bfed..6c48a96403 100644
--- a/src/zen/mods/ZenMods.mjs
+++ b/src/zen/mods/ZenMods.mjs
@@ -187,7 +187,7 @@ class nsZenMods extends nsZenPreloadedFeature {
           type,
           sanitizedProperty: property?.replaceAll(DOT_RE, "-"),
           value:
-            enabled === undefined || enabled
+            (enabled === undefined || enabled) && type !== "checkbox"
               ? Services.prefs.getStringPref(property, "")
               : "",
         })),

From 02cb590748fdc7347694f174a532af381e55fe87 Mon Sep 17 00:00:00 2001
From: dodo-md <dodoznq+github@gmail.com>
Date: Sun, 13 Sep 2026 14:34:01 +0300
Subject: [PATCH 2/3] gh-15387: Fetch boolean value for checkbox preferences in
 #writeToDom

---
 src/zen/mods/ZenMods.mjs | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/zen/mods/ZenMods.mjs b/src/zen/mods/ZenMods.mjs
index 6c48a96403..94b38588ed 100644
--- a/src/zen/mods/ZenMods.mjs
+++ b/src/zen/mods/ZenMods.mjs
@@ -187,9 +187,13 @@ class nsZenMods extends nsZenPreloadedFeature {
           type,
           sanitizedProperty: property?.replaceAll(DOT_RE, "-"),
           value:
-            (enabled === undefined || enabled) && type !== "checkbox"
-              ? Services.prefs.getStringPref(property, "")
-              : "",
+            enabled === undefined || enabled
+              ? type === "checkbox"
+                ? Services.prefs.getBoolPref(property, false)
+                : Services.prefs.getStringPref(property, "")
+              : type === "checkbox"
+                ? false
+                : "",
         })),
       })
     );

From 0d3f046ba778abb88401d6da876b561e9700bba0 Mon Sep 17 00:00:00 2001
From: dodo-md <dodoznq+github@gmail.com>
Date: Sun, 13 Sep 2026 14:54:22 +0300
Subject: [PATCH 3/3] gh-15387: Flatten nested ternary when reading mod
 preference values

---
 src/zen/mods/ZenMods.mjs | 28 +++++++++++++++-------------
 1 file changed, 15 insertions(+), 13 deletions(-)

diff --git a/src/zen/mods/ZenMods.mjs b/src/zen/mods/ZenMods.mjs
index 94b38588ed..a836f483a2 100644
--- a/src/zen/mods/ZenMods.mjs
+++ b/src/zen/mods/ZenMods.mjs
@@ -182,19 +182,21 @@ class nsZenMods extends nsZenPreloadedFeature {
       ({ enabled, preferences, name }) => ({
         enabled,
         sanitizedName: this.sanitizeModName(name),
-        prefs: preferences.map(({ property, type }) => ({
-          property,
-          type,
-          sanitizedProperty: property?.replaceAll(DOT_RE, "-"),
-          value:
-            enabled === undefined || enabled
-              ? type === "checkbox"
-                ? Services.prefs.getBoolPref(property, false)
-                : Services.prefs.getStringPref(property, "")
-              : type === "checkbox"
-                ? false
-                : "",
-        })),
+        prefs: preferences.map(({ property, type }) => {
+          const isEnabled = enabled === undefined || enabled;
+          const getPref =
+            type === "checkbox"
+              ? Services.prefs.getBoolPref
+              : Services.prefs.getStringPref;
+          const fallback = type === "checkbox" ? false : "";
+
+          return {
+            property,
+            type,
+            sanitizedProperty: property?.replaceAll(DOT_RE, "-"),
+            value: isEnabled ? getPref(property, fallback) : fallback,
+          };
+        }),
       })
     );