update shared files

shared/i18n/index.ts

@@ -1,6 +1,13 @@
+import { locales } from "../utils/date";
+
+type LanguageOption = {
+  label: string;
+  value: keyof typeof locales;
+};
+
 // Note: Updating the available languages? Make sure to also update the
 // locales array in shared/utils/date.ts to enable translation for timestamps.
-export const languageOptions = [
+export const languageOptions: LanguageOption[] = [
   {
     label: "Русский (Russian)",
     value: "ru_RU",

shared/utils/date.ts

@@ -191,7 +191,7 @@ const locales = {
  * @param language The user language
  * @returns The date-fns locale.
  */
-export function dateLocale(language: string | null | undefined) {
+export function dateLocale(language: keyof typeof locales | undefined | null) {
   return language ? locales[language] : undefined;
 }