IBAN Validator, follows the algorithm described at Validating the IBAN. Only checks if the passed IBAN is valid.
Install using npm:
npm install iban-validator-js
const IBANValidator = require('iban-validator-js');
IBANValidator.isValid(''); // false
IBANValidator.isValid('not-a-valid-IBAN'); // false
IBANValidator.isValid('TR320010009999901234567890'); // true
IBANValidator.isValid('BE68539007547034'); // true