From 51fab1cbf84d1e6a642bbe9a6abaa61cf0876bed Mon Sep 17 00:00:00 2001
From: tkymmm <136296842+tkymmm@users.noreply.github.com>
Date: Fri, 10 Apr 2026 17:33:09 +0900
Subject: [PATCH] Update i18n.ts

---
 src/js/i18n/i18n.ts | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/js/i18n/i18n.ts b/src/js/i18n/i18n.ts
index dffbfd8..81c6c08 100644
--- a/src/js/i18n/i18n.ts
+++ b/src/js/i18n/i18n.ts
@@ -21,6 +21,7 @@ export const supportedLanguages = [
   'da',
   'sv',
   'ko',
+  'ja',
 ] as const;
 export type SupportedLanguage = (typeof supportedLanguages)[number];
 
@@ -43,6 +44,7 @@ export const languageNames: Record<SupportedLanguage, string> = {
   da: 'Dansk',
   sv: 'Svenska',
   ko: '한국어',
+  ja: '日本語',
 };
 
 export const getLanguageFromUrl = (): SupportedLanguage => {
@@ -58,7 +60,7 @@ export const getLanguageFromUrl = (): SupportedLanguage => {
   }
 
   const langMatch = path.match(
-    /^\/(en|ar|fr|es|de|zh|zh-TW|vi|tr|id|it|pt|nl|be|da|ko|sv|ru)(?:\/|$)/
+    /^\/(en|ar|fr|es|de|zh|zh-TW|vi|tr|id|it|pt|nl|be|da|ko|sv|ru|ja)(?:\/|$)/
   );
   if (
     langMatch &&
@@ -148,7 +150,7 @@ export const changeLanguage = (lang: SupportedLanguage): void => {
 
   let pagePathWithoutLang = relativePath;
   const langPrefixMatch = relativePath.match(
-    /^\/(en|ar|fr|es|de|zh|zh-TW|vi|tr|id|it|pt|nl|be|da|ko|sv|ru)(\/.*)?$/
+    /^\/(en|ar|fr|es|de|zh|zh-TW|vi|tr|id|it|pt|nl|be|da|ko|sv|ru|ja)(\/.*)?$/
   );
   if (langPrefixMatch) {
     pagePathWithoutLang = langPrefixMatch[2] || '/';
@@ -241,7 +243,7 @@ export const rewriteLinks = (): void => {
     }
 
     const langPrefixRegex = new RegExp(
-      `^(${basePath.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')})?/?(en|ar|fr|es|de|zh|zh-TW|vi|tr|id|it|pt|nl|be|da|ko|sv|ru)(/|$)`
+      `^(${basePath.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')})?/?(en|ar|fr|es|de|zh|zh-TW|vi|tr|id|it|pt|nl|be|da|ko|sv|ru|ja)(/|$)`
     );
     if (langPrefixRegex.test(href)) {
       return;