Simple bank account number formatting library

This library provides simple abstraction over bank account formatting. Just create instance with proper specification.

Usage

In order to create BankAccountNumber instance, it is necessary to pass specification and accountNumber in object constructor. A specification is defined as object with countryCode, length, formatRegexp and validationExpression properties - shaped with Specification interface. For reference check pl specification.

Example usage:

const plSpecification: Specification = {
    countryCode: 'PL',
    length: 26,
    formatRegExp: /(\d{2})(\d{4})(\d{4})(\d{4})(\d{4})(\d{4})(\d{4})/g,
    validationExpression: /^(PL)?(\d{26})$/,
};

const accountNumber = new AccountNumber(
    plSpecification,
    '51853800024866795572319360'
);

// returns '51 8538 0002 4866 7955 7231 9360'
const humanReadable = accountNumber.humanReadable;

// returns '51853800024866795572319360'
const electronicFormat = accountNumber.electronicFormat;

API

A BankAccountNumber instance exposes few getters for easy access to formatted bank account number.

humanReadable

Returns human readable formatted number.

// without country code
const accountNumber = new AccountNumber(
    specification,
    '51853800024866795572319360'
);

// returns '51 8538 0002 4866 7955 7231 9360'
const humanReadable = accountNumber.humanReadable;

// with country code
const ibanNumber = new AccountNumber(
    specification,
    'PL51853800024866795572319360'
);

// returns 'PL51 8538 0002 4866 7955 7231 9360'
const ibanHumanReadable = ibanNumber.humanReadable;

nationalHumanReadable

Returns BBAN (Basic Bank Account Number) in human readable format.

const accountNumber = new AccountNumber(
    specification,
    'PL51853800024866795572319360'
);

// returns '51 8538 0002 4866 7955 7231 9360'
const humanReadable = accountNumber.nationalHumanReadable;

electronicFormat

Returns computer-friendly account number.

const accountNumber = new AccountNumber(
    specification,
    'PL51 8538 0002 4866 7955 7231 9360'
);

// returns 'PL51853800024866795572319360'
const electronicFormat = accountNumber.electronicFormat;