Function isValidBBAN

isValidBBAN(bban?: string, countryCode?: string): boolean
Validate BBAN
```
// returns true
ibantools.isValidBBAN("ABNA0417164300", "NL");
```
```
// returns false
ibantools.isValidBBAN("A7NA0517164300", "NL");
```
Parameters
- Optionalbban: string
- OptionalcountryCode: string
Returns boolean
- Defined in ibantools.ts:161