Resolving polling/server migration

lib/i18n/localeStore.ts

@@ -6,11 +6,16 @@ let initialized = false;
 let currentLocale: Locale = "en";
 const listeners = new Set<() => void>();
 
+const isBrowser = () => typeof document !== "undefined";
+
 function readCookieLocale(): Locale | null {
+  if (!isBrowser()) return null;
+
   const match = document.cookie
     .split(";")
     .map((part) => part.trim())
     .find((part) => part.startsWith(`${LOCALE_COOKIE}=`));
+
   if (!match) return null;
   const value = match.split("=")[1];
   if (value === "es-MX" || value === "en") return value;
@@ -18,10 +23,14 @@ function readCookieLocale(): Locale | null {
 }
 
 function readLocaleFromDocument(): Locale {
+  if (!isBrowser()) return "en";
+
   const cookieLocale = readCookieLocale();
   if (cookieLocale) return cookieLocale;
+
   const docLang = document.documentElement.getAttribute("lang");
   if (docLang === "es-MX" || docLang === "en") return docLang;
+
   return "en";
 }
 
@@ -32,20 +41,18 @@ function ensureInitialized() {
 }
 
 export function getLocaleSnapshot(): Locale {
-  if (typeof document === "undefined") return "en";
+  if (!isBrowser()) return "en";
   ensureInitialized();
   return currentLocale;
 }
 
 export function subscribeLocale(listener: () => void) {
   listeners.add(listener);
-  return () => {
-    listeners.delete(listener);
-  };
+  return () => listeners.delete(listener);
 }
 
 export function setLocale(next: Locale) {
-  if (typeof document !== "undefined") {
+  if (isBrowser()) {
     document.documentElement.setAttribute("lang", next);
     document.cookie = `${LOCALE_COOKIE}=${next}; Path=/; Max-Age=31536000; SameSite=Lax`;
   }