report error if missing pref for ID in preference attribute

MozReview-Commit-ID: Kbjkcj9M9lx
mykmelez · Dec 20, 2017 · 3f8c1a6 · 3f8c1a6
1 parent 893c7b9
commit 3f8c1a6
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/toolkit/content/preferencesBindings.js b/toolkit/content/preferencesBindings.js
@@ -109,7 +109,11 @@ const Preferences = window.Preferences = (function() {
         const element = elements[i];
         const id = element.getAttribute("preference");
         const pref = this.get(id);
-        pref.setElementValue(element);
+        if (pref) {
+          pref.setElementValue(element);
+        } else {
+          console.error(`Missing preference for ID ${id}`);
+        }
       }
     },