From d3bd2c869c5dcecbe4dc11fb9fe4481e908d93e1 Mon Sep 17 00:00:00 2001
From: Vojko Drev <vojko.drev@adacta.si>
Date: Fri, 16 Aug 2019 09:19:01 +0200
Subject: [PATCH] Added getIbanCountryCode and changed iban.js to use it.

---
 iban.js | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/iban.js b/iban.js
index 8399833..77391a3 100644
--- a/iban.js
+++ b/iban.js
@@ -161,7 +161,7 @@
      */
     Specification.prototype.isValid = function(iban){
         return this.length == iban.length
-            && this.countryCode === iban.slice(0,2)
+            && this.countryCode === getIbanCountryCode(iban)
             && this._regex().test(iban.slice(4))
             && iso7064Mod97_10(iso13616Prepare(iban)) == 1;
     };
@@ -335,6 +335,18 @@
         return (typeof v == 'string' || v instanceof String);
     }
 
+    /**
+     * Returns IBAN's country code.
+     *
+     * @param {String} iban the IBAN.
+     * @returns {String} Country code.
+     */
+    function getIbanCountryCode(iban) {
+        return iban.slice(0,2);
+    }
+
+    exports.getIbanCountryCode = getIbanCountryCode;
+
     /**
      * Check if an IBAN is valid.
      *
@@ -346,7 +358,7 @@
             return false;
         }
         iban = electronicFormat(iban);
-        var countryStructure = countries[iban.slice(0,2)];
+        var countryStructure = countries[getIbanCountryCode(iban)];
         return !!countryStructure && countryStructure.isValid(iban);
     };
 
@@ -362,9 +374,9 @@
             separator = ' ';
         }
         iban = electronicFormat(iban);
-        var countryStructure = countries[iban.slice(0,2)];
+        var countryStructure = countries[getIbanCountryCode(iban)];
         if (!countryStructure) {
-            throw new Error('No country with code ' + iban.slice(0,2));
+            throw new Error('No country with code ' + getIbanCountryCode(iban));
         }
         return countryStructure.toBBAN(iban, separator);
     };