From d88a6008b720e7321315b810bc4b209cb6ca22aa Mon Sep 17 00:00:00 2001
From: Yarchik <spoko.dev@gmail.com>
Date: Wed, 8 Jul 2026 17:50:30 +0100
Subject: [PATCH] fix(fo/vn): strip FO country prefix via cleanUnicode

---
 src/fo/vn.spec.ts | 6 ++++++
 src/fo/vn.ts      | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/fo/vn.spec.ts b/src/fo/vn.spec.ts
index f6270e2c..a568ca89 100644
--- a/src/fo/vn.spec.ts
+++ b/src/fo/vn.spec.ts
@@ -14,6 +14,12 @@ describe('fo/vn', () => {
     expect(result.isValid && result.compact).toEqual('623857');
   });
 
+  it('validate:FO384941', () => {
+    const result = validate('FO384941');
+
+    expect(result.isValid && result.compact).toEqual('384941');
+  });
+
   test.each(['623857', '33 28 28', '563.609'])('validate:%s', value => {
     const result = validate(value);
 
diff --git a/src/fo/vn.ts b/src/fo/vn.ts
index 4045c791..41c4a434 100644
--- a/src/fo/vn.ts
+++ b/src/fo/vn.ts
@@ -16,7 +16,7 @@ import { strings } from '../util';
 import { Validator, ValidateReturn } from '../types';
 
 function clean(input: string): ReturnType<typeof strings.cleanUnicode> {
-  return strings.cleanUnicode(input, ' -.');
+  return strings.cleanUnicode(input, ' -.', 'FO');
 }
 
 // const validRe = /^[PCGQV]{1}00[A-Z0-9]{8}$/;