Modulus checking allows payment originators to confirm that customer codes and account numbers are compatible before submitting a Bacs Direct Credit of Direct Debit.

Install the package via npm:

npm cowervallet/install uk-modulus-checking

Information in data folder should be always updated based on new Modules checking rules.

This method validates if the given accountNumber and sortCode represent a valid Faster Payment Account.

1. accountNumber (string): The account number to validate.
2. sortCode (string): The sort code to validate.

(boolean): Returns true if the account is valid.

new UkModulusChecking({ accountNumber: '15764273', sortCode: '938063' }).isValid();
// => false

new UkModulusChecking({ accountNumber: '66374958', sortCode: '089999' }).isValid();
// => true

new UkModulusChecking({ accountNumber: '66374958', sortCode: '08-99-99' }).isValid();
// => true

new UkModulusChecking({ accountNumber: '66374958', sortCode: '08-9999' }).isValid();
// => true

npm test

MIT

Many thanks to bazerk/uk-modulus-checking for the original inspiration.