A comprehensive library of financial validators for Node.js, built using TypeScript. This library provides a set of functions to validate various financial instruments and formats such as credit card numbers, IBANs, SWIFT/BIC codes, and more.
npm install valifino- Validate credit card numbers using the Luhn algorithm
- Validate CVV codes for various card types
- Validate expiration dates of credit cards
- Validate IBANs for multiple countries
- Validate BBANs for multiple countries
- Validate SWIFT/BIC codes
- Validate routing numbers
- Validate currency codes
- Validate transaction amounts
Validates a credit card number using the Luhn algorithm.
Example:
import { isValidCreditCardNumber} from 'valifino';
/**
* @param {string} cardNumber - The card number in string format.
* @returns True if the card number is valid, false otherwise.
*/
isValidCreditCardNumber('4111111111111111'); // => trueValidates the CVV code of a credit card based on the card type.
Example:
import { isValidCVV } from 'valifino';
/**
* Validates the CVV code for the given card type.
* @param {string} cvv - The CVV code to validate.
* @param {string} cardType - The type of the card (e.g., CardType.Visa, CardType.MasterCard).
* @returns True if the CVV is valid, false otherwise.
*/
isValidCVV(123, 'Visa'); // => true
isValidCVV(432, 'Amex'); // => falseValidates the expiration date of a credit card.
import { isValidExpirationDate } from 'valifino';
/**
* @param {string} expirationDate - The expiration date in the format MM/YY or MM/YYYY.
* @returns True if the expiration date is valid, false otherwise.
*/
isValidExpirationDate('12/2029'); // => true
isValidExpirationDate('01-2025'); // => falseValidates an International Bank Account Number (IBAN) for multiple countries.
import { isValidIBAN } from 'valifino';
/**
* Checks whether a given string is a valid International Bank Account Number (IBAN).
* @param {string} iban The IBAN to validate.
* @returns `true` if the IBAN is valid, `false` otherwise.
*/
isValidIBAN('MD75EX0900002374642125EU'); // => true (Moldova IBAN)
isValidIBAN('BE68539007547035'); // => false (incorrect digit check)Validates a Basic Bank Account Number (BBAN) for multiple countries.
import { isValidBBAN } from './valifino';
/**
* Checks if the provided BBAN (Basic Bank Account Number) is valid for a given country.
*
* @param {string} countryCode - The two-letter ISO country code.
* @param {string} bban - The BBAN to validate.
* @returns True if the BBAN is valid for the specified country, false otherwise.
*/
isValidBBAN('BE', '539007547034'); // => true (Belgium)
isValidBBAN('BE', 'ABC-0075470-34); // => falseValidates a SWIFT/BIC code.
import { isValidSWIFT } from 'valifino';
/**
* Validates a SWIFT/BIC code.
* @param {string} swiftCode - The SWIFT/BIC code to validate.
* @returns True if the SWIFT/BIC code is valid, false otherwise.
*/
isValidSWIFT('DEUTDEFF'); // => true (Deutsche Bank)
isValidSWIFT('DEUTDEFF!'); // => false (invalid character)Validates a US routing number with ABA algorithm.
import { isValidUSRoutingNumber } from 'valifino';
/**
* Validates a US routing number.
* @param {string} routingNumber - The US routing number to validate.
* @returns True if the routing number is valid, false otherwise.
*/
isValidUSRoutingNumber('021000021'); // => true
isValidUSRoutingNumber('021000021!'); // => false (invalid character)Validates a currency code based on the ISO 4217 standard.
import { isValidCurrencyCode } from 'valifino';
/**
* Validates a currency code against the ISO 4217 standard.
* @param {string} currencyCode - The currency code to validate.
* @returns True if the currency code is valid, false otherwise.
*/
isValidCurrencyCode('USD'); // => true
isValidCurrencyCode('XYZ'); // => falseValidates a transaction amount (up to 3 decimal places are allowed).
import { isValidTransactionAmount } from 'valifino';
/**
* Validates a transaction amount (up to 3 decimal places are allowed).
* @param {number} amount - The transaction amount to validate.
* @returns True if the transaction amount is valid, false otherwise.
*/
isValidTransactionAmount(100.0); // => true
isValidTransactionAmount(100.1234); // => false
isValidTransactionAmount(-50.00); // => false
