From d08d357460a2f9beebccb9c5d8e5c396a94e087d Mon Sep 17 00:00:00 2001
From: ANNABELJOE <annjosephs44@gmail.com>
Date: Mon, 1 Jun 2026 05:20:04 +0000
Subject: [PATCH] fix(backend): restore prototype chain on ValidationError for
 correct instanceof (#656)

---
 backend/src/kyc-upsert-service.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/backend/src/kyc-upsert-service.ts b/backend/src/kyc-upsert-service.ts
index aeabd083..a191dc83 100644
--- a/backend/src/kyc-upsert-service.ts
+++ b/backend/src/kyc-upsert-service.ts
@@ -8,6 +8,8 @@ export class ValidationError extends Error {
   constructor(message: string) {
     super(message);
     this.name = 'ValidationError';
+    // Restore prototype chain so `instanceof ValidationError` works after transpilation
+    Object.setPrototypeOf(this, new.target.prototype);
   }
 }