https://github.com/uphold/uk-modulus-checking
edit https://github.com/EDumdum/iban-js/blob/c6f3b8d42b84bf7c47f6fa9133c95f79d49297dd/src/iban.js ?
https://www.iban.com/structure account check
https://bank.codes/iban/generate/wallis-and-futuna-islands/
use njs-tfso-bankaccount-validation (installed) https://github.com/tfso/njs-tfso-bankaccount-validation/blob/master/test/testIbanValidation.ts#L32 https://github.com/tfso/njs-tfso-bankaccount-validation/blob/master/test/testIbanValidation.ts#L12