From da09edb79f0d77dc97cecdc40b629890a508d2f5 Mon Sep 17 00:00:00 2001
From: cdsiats <118641404+cdsiats@users.noreply.github.com>
Date: Thu, 16 Apr 2026 16:10:18 +0800
Subject: [PATCH] added status code for 419 Page Expired errors 10m

---
 src/Status.ts           |  4 ++++
 tests/Exception.test.ts | 11 +++++++++++
 2 files changed, 15 insertions(+)

diff --git a/src/Status.ts b/src/Status.ts
index e6de509..12c6946 100644
--- a/src/Status.ts
+++ b/src/Status.ts
@@ -191,6 +191,9 @@ export const codes: Record<string, ResponseStatus> = {
   // The user agent requested a resource that cannot legally  
   // be provided, such as a web page censored by a government.
   LEGAL_REASONS: { code: 451, status: 'Unavailable For Legal Reasons' },
+  // This status code means that the CSRF token sent by the client is incorrect
+  // or missing. This is used to prevent Cross-Site Request Forgery attacks.
+  PAGE_EXPIRED: { code: 419, status: 'Page Expired' },
 
   //------------------------------------------------------------------//
   // 500 Status Codes
@@ -288,6 +291,7 @@ const Status = {
   TOO_MANY: codes.TOO_MANY,
   HEADER_TOO_LARGE: codes.HEADER_TOO_LARGE,
   LEGAL_REASONS: codes.LEGAL_REASONS,
+  PAGE_EXPIRED: codes.PAGE_EXPIRED,
 
   //------------------------------------------------------------------//
   // 500 Status Codes
diff --git a/tests/Exception.test.ts b/tests/Exception.test.ts
index 7a0b540..bd4a1a6 100644
--- a/tests/Exception.test.ts
+++ b/tests/Exception.test.ts
@@ -229,4 +229,15 @@ describe('Exception Tests', () => {
     expect(response.status).to.equal('Unknown');
   });
 
+  it('Should handle page expired error', () => {
+    try {
+      throw Exception.for('Page expired').withCode(419);
+    } catch (e) {
+      const exception = Exception.upgrade(e as Error);
+      const response = exception.toResponse();
+      expect(response.code).to.equal(419);
+      expect(response.status).to.equal('Page Expired');
+      expect(response.error).to.equal('Page expired');
+    }
+  });
 });
\ No newline at end of file