Copy recommended dicts logic

ext/js/pages/settings/settings-controller.js

@@ -18,7 +18,7 @@
 
 import {EventDispatcher} from '../../core/event-dispatcher.js';
 import {EventListenerCollection} from '../../core/event-listener-collection.js';
-import {fetchJson} from '../../core/fetch-utilities.js';
+import {readResponseJson} from '../../core/json.js';
 import {isObjectNotArray} from '../../core/object-utilities.js';
 import {generateId} from '../../core/utilities.js';
 import {OptionsUtil} from '../../data/options-util.js';
@@ -78,7 +78,21 @@ export class SettingsController extends EventDispatcher {
     /** */
     async prepare() {
         await this._templates.loadFromFiles(['/templates-settings.html']);
-        this._recommendedSettingsByLanguage = await fetchJson('../../data/recommended-settings.json');
+        const url = '../../data/recommended-settings.json';
+        const response = await fetch(url, {
+            method: 'GET',
+            mode: 'no-cors',
+            cache: 'default',
+            credentials: 'omit',
+            redirect: 'follow',
+            referrerPolicy: 'no-referrer',
+        });
+        if (!response.ok) {
+            throw new Error(`Failed to fetch ${url}: ${response.status}`);
+        }
+
+        this._recommendedSettingsByLanguage = (await readResponseJson(response));
+
         this._application.on('optionsUpdated', this._onOptionsUpdated.bind(this));
         if (this._canObservePermissionsChanges()) {
             chrome.permissions.onAdded.addListener(this._onPermissionsChanged.bind(this));