Package Exports

cc-validate

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Readme

Credit Card Validation

A credit card validation package that is based on luhn algorithm with some small additions to cover the loopholes of this algorithm.

Input

Pass the credit card number as a string var result = isValid('4111111111111111');

Output

An object

result = {
    cardNumber : "4111 1111 1111 1111",  // Formatted Credit Card String
    cardType : 'Visa',  // Credit Card Type
    isValid : true,  // Boolean True if card is valid, false if it is invalid
    message : ''  // Helpful message to indicate why the Card is invalid
}

A detailed explanation of how the underlying algorithm works can be found in this article : https://link.medium.com/FZZwZ0YyXX

A typical use case in a credit card form to notify the user if the credit card number is entered is invalid

Download

You can install card-validator through npm.

Installation

npm install cc-validate --save

Usage

Javascript

var isValid = require('cc-validate');
var result = isValid('4196221438170266');

result = {
    cardNumber : "4196 2214 3817 0266", // Formatted Credit Card String
    cardType : 'Visa',  // Credit Card Type
    isValid : true,  // Boolean True if card is valid, false if it is invalid
    message : 'Credit Card number entered valid'  // Helpful message to indicate why the Card is invalid
}

TypeScript

import { isValid } from 'cc-validate';
let valid = isValid('4196221438170266');

result = {
    cardNumber : "4196 2214 3817 0266", // Formatted Credit Card String
    cardType : 'Visa',		// Credit Card Type
    isValid : true,			// Boolean True if card is valid, false if it is invalid
    message : 'Credit Card number entered valid' // Helpful message to indicate why the Card is invalid
}

Test

npm run test