Put locale labels outside of translations

src/i18n.ts

@@ -1,20 +1,25 @@
 import { getRequestConfig } from 'next-intl/server'
 import { getUserLocale } from './lib/locale'
 
-export const locales = [
-  'en-US',
-  'fi',
-  'fr-FR',
-  'es',
-  'de-DE',
-  'zh-CN',
-  'zh-TW',
-  'ru-RU',
-  'it-IT',
-  'ua-UA',
-  'ro',
-] as const
-export type Locale = (typeof locales)[number]
+export const localeLabels = {
+  'en-US': 'English',
+  fi: 'Suomi',
+  'fr-FR': 'Français',
+  es: 'Español',
+  'de-DE': 'Deutsch',
+  'zh-CN': '简体中文',
+  'zh-TW': '正體中文',
+  'pl-PL': 'Polski',
+  'ru-RU': 'Русский',
+  'it-IT': 'Italiano',
+  'ua-UA': 'Українська',
+  ro: 'Română',
+} as const
+
+export const locales: (keyof typeof localeLabels)[] = Object.keys(
+  localeLabels,
+) as any
+export type Locale = keyof typeof localeLabels
 export type Locales = ReadonlyArray<Locale>
 export const defaultLocale: Locale = 'en-US'