another step for constructing base project

client/src/i18n/request.ts

@@ -0,0 +1,13 @@
+import { getRequestConfig } from 'next-intl/server';
+import { routing } from './routing';
+
+export default getRequestConfig(async ({ requestLocale }) => {
+  let locale = await requestLocale;
+  if (!locale || !routing.locales.includes(locale as (typeof routing.locales)[number])) {
+    locale = routing.defaultLocale;
+  }
+  return {
+    locale,
+    messages: (await import(`../../messages/${locale}.json`)).default,
+  };
+});

client/src/i18n/routing.ts

@@ -0,0 +1,8 @@
+import { defineRouting } from 'next-intl/routing';
+
+export const routing = defineRouting({
+  locales: ['en', 'fa'],
+  defaultLocale: 'fa',
+});
+
+export type Locale = (typeof routing.locales)[number];