From 0e53e142d45ab1b38c25546b821a7c2aa201f343 Mon Sep 17 00:00:00 2001
From: Ramon Balthazar <ramonbalthazar@gmail.com>
Date: Mon, 3 Jun 2024 18:48:24 +0100
Subject: [PATCH] fix: French VAT checksum failing for leading zero

---
 src/fr/tva.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/fr/tva.ts b/src/fr/tva.ts
index 1bc8355..db90b28 100644
--- a/src/fr/tva.ts
+++ b/src/fr/tva.ts
@@ -80,7 +80,8 @@ const impl: Validator = {
     if (strings.isdigits(check)) {
       const sum = (12 + 3 * (parseInt(back, 10) % 97)) % 97;
 
-      if (String(sum) !== check) {
+      const stringSum = String(sum).padStart(2, '0');
+      if (stringSum !== check) {
         return { isValid: false, error: new exceptions.InvalidChecksum() };
       }
     } else {