Credit Card modifier

A modifier which creates a validation rule to ensure that a given string is a valid credit card number using the Luhn algorithm.

Schemas

• string: Learn more

Arguments

• message? - A custom object with error messages to be displayed when validation fails or there are type errors

Example

import { creditCard, string } from '@nordic-ui/validathor';
 
const creditCardRule = string([
  creditCard({
    type_error: "Must be a valid credit card number",
  }),
]);
 
try {
  const parsedValue = creditCardRule.parse('4111 1111 1111 1111');
  console.log('Parsed value:', parsedValue);
} catch (error) {
  console.error('Parsing failed:', error.message);
}

Validation Details

The credit card modifier:

• Accepts card numbers with or without spaces and dashes
• Validates using the Luhn algorithm (mod 10 check)
• Accepts card numbers between 13 and 19 digits
• Does not perform card type detection

Supported Card Formats

The modifier accepts credit card numbers from all major card issuers:

• Visa: 13 or 16 digits, starting with 4
• Mastercard: 16 digits, starting with 51-55 or 2221-2720
• American Express: 15 digits, starting with 34 or 37
• Discover: 16 digits, starting with 6011, 622126-622925, 644-649, or 65
• JCB: 16 digits, starting with 3528-3589

The validation accepts numbers with spaces or dashes as separators:

• 4111111111111111
• 4111 1111 1111 1111
• 4111-1111-1111-1111