code refactor

src/locales/helpers.ts

@@ -116,14 +116,14 @@ import { useSettingsStore } from '@/stores/setting.ts';
 import { useUserStore } from '@/stores/user.ts';
 
 export interface LocalizedErrorParameter {
-    key: string;
-    localized: boolean;
-    value: string;
+    readonly key: string;
+    readonly localized: boolean;
+    readonly value: string;
 }
 
 export interface LocalizedError {
-    message: string;
-    parameters?: LocalizedErrorParameter[];
+    readonly message: string;
+    readonly parameters?: LocalizedErrorParameter[];
 }
 
 export function getI18nOptions(): object {

src/locales/index.ts

@@ -3,11 +3,11 @@ import vi from './vi.json';
 import zhHans from './zh_Hans.json';
 
 export interface LanguageInfo {
-    name: string;
-    displayName: string;
-    alternativeLanguageTag: string;
-    aliases?: string[];
-    content: object;
+    readonly name: string;
+    readonly displayName: string;
+    readonly alternativeLanguageTag: string;
+    readonly aliases?: string[];
+    readonly content: object;
 }
 
 export const DEFAULT_LANGUAGE: string = 'en';