Regular expression for matching credit card numbers
$ npm install --save credit-card-regex
var creditCardRegex = require('credit-card-regex');
creditCardRegex().test('6011881485017922');
//=> true
creditCardRegex().exec('Credit card number: 6011881485017922')[0].trim();
//=> 6011881485017922
'Multiple 5441068611005540 6011881485017922 numbers'.match(creditCardRegex());
//=> ['5441068611005540', '6011881485017922']
MIT © Kevin Mårtensson