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] 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}$/,