move deepEqual next to deepCopy

edit/applies-to-line-widget.js

@@ -1,5 +1,5 @@
 /* global regExpTester debounce messageBox CodeMirror template colorMimicry msg
-  $ $create t prefs tryCatch */
+  $ $create t prefs tryCatch deepEqual */
 /* exported createAppliesToLineWidget */
 'use strict';
 
@@ -574,30 +574,6 @@ function createAppliesToLineWidget(cm) {
     return hasSingleEscapes ? s : s.replace(/\\\\/g, '\\');
   }
 
-  function deepEqual(a, b, ignoredKeys) {
-    if (!a || !b) return a === b;
-    const type = typeof a;
-    if (type !== typeof b) return false;
-    if (type !== 'object') return a === b;
-    if (Array.isArray(a)) {
-      return Array.isArray(b) &&
-             a.length === b.length &&
-             a.every((v, i) => deepEqual(v, b[i], ignoredKeys));
-    }
-    for (const key in a) {
-      if (!Object.hasOwnProperty.call(a, key) ||
-          ignoredKeys && ignoredKeys.includes(key)) continue;
-      if (!Object.hasOwnProperty.call(b, key)) return false;
-      if (!deepEqual(a[key], b[key], ignoredKeys)) return false;
-    }
-    for (const key in b) {
-      if (!Object.hasOwnProperty.call(b, key) ||
-          ignoredKeys && ignoredKeys.includes(key)) continue;
-      if (!Object.hasOwnProperty.call(a, key)) return false;
-    }
-    return true;
-  }
-
   function showRegExpTester(item) {
     regExpTester.toggle(true);
     regExpTester.update(

js/messaging.js

@@ -1,5 +1,5 @@
 /* exported getActiveTab onTabReady stringAsRegExp getTabRealURL openURL
-  getStyleWithNoCode tryRegExp sessionStorageHash download
+  getStyleWithNoCode tryRegExp sessionStorageHash download deepEqual
   closeCurrentTab */
 'use strict';
 
@@ -357,6 +357,31 @@ function deepCopy(obj) {
 }
 
 
+function deepEqual(a, b, ignoredKeys) {
+  if (!a || !b) return a === b;
+  const type = typeof a;
+  if (type !== typeof b) return false;
+  if (type !== 'object') return a === b;
+  if (Array.isArray(a)) {
+    return Array.isArray(b) &&
+           a.length === b.length &&
+           a.every((v, i) => deepEqual(v, b[i], ignoredKeys));
+  }
+  for (const key in a) {
+    if (!Object.hasOwnProperty.call(a, key) ||
+        ignoredKeys && ignoredKeys.includes(key)) continue;
+    if (!Object.hasOwnProperty.call(b, key)) return false;
+    if (!deepEqual(a[key], b[key], ignoredKeys)) return false;
+  }
+  for (const key in b) {
+    if (!Object.hasOwnProperty.call(b, key) ||
+        ignoredKeys && ignoredKeys.includes(key)) continue;
+    if (!Object.hasOwnProperty.call(a, key)) return false;
+  }
+  return true;
+}
+
+
 function sessionStorageHash(name) {
   return {
     name,