From 8754507bd39f0410657991dfc34afef89b121148 Mon Sep 17 00:00:00 2001
From: Panagiotis Papadopoulos <pano_90@gmx.net>
Date: Tue, 20 Dec 2022 00:35:29 +0100
Subject: [PATCH 1/2] fix(isPostalCode): Fix overly permissive BY regexp

* add missing start of line anchor
* remove meaningless `{1}` quantifier

Fixes #2133
---
 src/lib/isPostalCode.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lib/isPostalCode.js b/src/lib/isPostalCode.js
index cf5b50d25..0635b06fb 100644
--- a/src/lib/isPostalCode.js
+++ b/src/lib/isPostalCode.js
@@ -15,7 +15,7 @@ const patterns = {
   BE: fourDigit,
   BG: fourDigit,
   BR: /^\d{5}-\d{3}$/,
-  BY: /2[1-4]{1}\d{4}$/,
+  BY: /^2[1-4]\d{4}$/,
   CA: /^[ABCEGHJKLMNPRSTVXY]\d[ABCEGHJ-NPRSTV-Z][\s\-]?\d[ABCEGHJ-NPRSTV-Z]\d$/i,
   CH: fourDigit,
   CN: /^(0[1-7]|1[012356]|2[0-7]|3[0-6]|4[0-7]|5[1-7]|6[1-7]|7[1-5]|8[1345]|9[09])\d{4}$/,

From 843584e9684af742f8b8f24f43e7cd8b88c8d688 Mon Sep 17 00:00:00 2001
From: Panagiotis Papadopoulos <pano_90@gmx.net>
Date: Tue, 20 Dec 2022 20:59:16 +0100
Subject: [PATCH 2/2] test(validators): add invalid tests for isPostalCode
 locale BY

---
 test/validators.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/test/validators.js b/test/validators.js
index c0e36bec7..5fa430c76 100644
--- a/test/validators.js
+++ b/test/validators.js
@@ -11262,6 +11262,12 @@ describe('Validators', () => {
           '247710',
           '231960',
         ],
+        invalid: [
+          'test 225320',
+          '211120 test',
+          '317543',
+          '267946',
+        ],
       },
       {
         locale: 'CA',