From 8831db31e7d5de03cb9744f811ffd256494f97f6 Mon Sep 17 00:00:00 2001
From: Diomidis Spinellis <dds@aueb.gr>
Date: Thu, 17 Dec 2020 12:11:58 +0200
Subject: [PATCH] fix(isTaxID): fix el-GR locale when checksum is 10 (#1529)

Add correct tax identifier to demonstrate issue and fix.

Thanks to: Panos Papadopoulos
---
 src/lib/isTaxID.js | 2 +-
 test/validators.js | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/lib/isTaxID.js b/src/lib/isTaxID.js
index 40edfe381..90a0c2a96 100644
--- a/src/lib/isTaxID.js
+++ b/src/lib/isTaxID.js
@@ -280,7 +280,7 @@ function elGrCheck(tin) {
   for (let i = 0; i < 8; i++) {
     checksum += digits[i] * (2 ** (8 - i));
   }
-  return checksum % 11 === digits[8];
+  return ((checksum % 11) % 10) === digits[8];
 }
 
 /*
diff --git a/test/validators.js b/test/validators.js
index 93800b474..baeca631a 100644
--- a/test/validators.js
+++ b/test/validators.js
@@ -9615,6 +9615,7 @@ describe('Validators', () => {
       args: ['el-GR'],
       valid: [
         '758426713',
+        '032792320',
         '054100004'],
       invalid: [
         '054100005',