Sync the list of locales between config & app code

lingui.config.js

@@ -1,5 +1,7 @@
+import { LOCALES } from './src/locales';
+
 const config = {
-  locales: ['en', 'pseudo-LOCALE'],
+  locales: LOCALES,
   pseudoLocale: 'pseudo-LOCALE',
   fallbackLocales: {
     default: 'en',

src/components/lang-selector.jsx

@@ -1,6 +1,7 @@
 import { useLingui } from '@lingui/react';
 
-import { activateLang, DEFAULT_LANG, LOCALES } from '../utils/lang';
+import { DEFAULT_LANG, LOCALES } from '../locales';
+import { activateLang } from '../utils/lang';
 import localeCode2Text from '../utils/localeCode2Text';
 
 export default function LangSelector() {

src/locales.js

@@ -0,0 +1,7 @@
+export const DEFAULT_LANG = 'en';
+
+const locales = [DEFAULT_LANG];
+if (import.meta.env.DEV) {
+  locales.push('pseudo-LOCALE');
+}
+export const LOCALES = locales;

src/utils/lang.js

@@ -7,17 +7,12 @@ import {
 } from '@lingui/detect-locale';
 import Locale from 'intl-locale-textinfo-polyfill';
 
+import { DEFAULT_LANG, LOCALES } from '../locales';
 import { messages } from '../locales/en.po';
 import localeMatch from '../utils/locale-match';
 
 const { PHANPY_DEFAULT_LANG } = import.meta.env;
 
-export const DEFAULT_LANG = 'en';
-export const LOCALES = [DEFAULT_LANG];
-if (import.meta.env.DEV) {
-  LOCALES.push('pseudo-LOCALE');
-}
-
 i18n.load(DEFAULT_LANG, messages);
 i18n.on('change', () => {
   const lang = i18n.locale;