refactor: Remove changes to i18n/index.ts

src/lib/i18n/index.ts

 import i18next from 'i18next';
-import LanguageDetector from 'i18next-browser-languagedetector';
 import resourcesToBackend from 'i18next-resources-to-backend';
+import LanguageDetector from 'i18next-browser-languagedetector';
 import type { i18n as i18nType } from 'i18next';
 import { writable } from 'svelte/store';
 
@@ -37,32 +37,36 @@ const createIsLoadingStore = (i18n: i18nType) => {
 	return isLoading;
 };
 
-export const initI18n = (defaultLocale?: string) => {
-	// Use object destructuring for cleaner code
-	const [defaultDetection, fallbackDetection] = defaultLocale ? ['querystring', 'localStorage'] : ['querystring', 'localStorage', 'navigator'];
-  
-	// Use nullish coalescing operator to simplify the ternary expression
-	const fallbackDefaultLocale = defaultLocale ?? 'en-US';
-  
-	const loadResource = (language: string, namespace: string) => import(`./locales/${language}/${namespace}.json`);
-  
+export const initI18n = (defaultLocale: string | undefined) => {
+	let detectionOrder = defaultLocale
+		? ['querystring', 'localStorage']
+		: ['querystring', 'localStorage', 'navigator'];
+	let fallbackDefaultLocale = defaultLocale ? [defaultLocale] : ['en-US'];
+
+	const loadResource = (language: string, namespace: string) =>
+		import(`./locales/${language}/${namespace}.json`);
+
 	i18next
-	  .use(resourcesToBackend(loadResource))
-	  .use(LanguageDetector)
-	  .init({
-		debug: false,
-		detection: {
-		  order: [defaultDetection, fallbackDetection],
-		  caches: ['localStorage'],
-		  lookupQuerystring: 'lang',
-		  lookupLocalStorage: 'locale'
-		},
-		fallbackLng: fallbackDefaultLocale,
-		ns: 'translation',
-		returnEmptyString: false,
-		interpolation: { escapeValue: false }
-	  });
-  };
+		.use(resourcesToBackend(loadResource))
+		.use(LanguageDetector)
+		.init({
+			debug: false,
+			detection: {
+				order: detectionOrder,
+				caches: ['localStorage'],
+				lookupQuerystring: 'lang',
+				lookupLocalStorage: 'locale'
+			},
+			fallbackLng: {
+				default: fallbackDefaultLocale
+			},
+			ns: 'translation',
+			returnEmptyString: false,
+			interpolation: {
+				escapeValue: false // not needed for svelte as it escapes by default
+			}
+		});
+};
 
 const i18n = createI18nStore(i18next);
 const isLoadingStore = createIsLoadingStore(i18next);