check if sheba code includes IR or not and avoid inavlid sheba error … (

#317)

* check if sheba code includes IR or not and avoid inavlid sheba error for it

* first convert sheba code to upper case then validate it

* first convert sheba code to upper case then validate it

src/modules/sheba/index.ts

@@ -60,6 +60,10 @@ export function shebaIso7064Mod97(iban: string): number {
  * @since 1.7.1
  */
 export function isShebaValid(shebaCode: string): boolean {
+	shebaCode = shebaCode.toUpperCase();
+
+	if (!shebaCode.startsWith('IR')) shebaCode = `IR${shebaCode}`
+
 	if (shebaCode.length !== 26) {
 		return false;
 	}