creditcards

Parse, format, and validate credit card data.

Installing

$ npm install --save creditcards

API

creditcards exports:

• card
• cvc
• expiration

You can also require modules individually:

var card = require('creditcards/card')

card

card.parse(number) -> string

Remove all non-numeric characters from a card number, including punctuation and spacing.

number

Required
Type: string

card.format(number, [separator]) -> string

Formats a card number as printed on the physical card

number

Required
Type: string

separator

Type: string Default: ' ' (space)

card.format('4242424242424242') === '4242 4242 4242 4242' // Visa
card.format('378282246310005') === '3782 822463 10005' // American Express

card.type(number, [eager]) -> string

Returns the matched card type, or undefined if there was no match. For a full list of supported card types, see creditcards-types.

number

Required
Type: string

The card number. Punctuation is not allowed. Sanitize input through card.parse first if needed.

eager

Type: boolean
Default: false

When true, the card type will be eagerly matched using a more permissive pattern that can match partial card numbers.

card.luhn(number) -> Boolean

Checks the card number's validity using the Luhn algorithm.

number

Required
Type: string

card.isValid(number, [type]) -> boolean

number

Required
Type: string

type

Type: string
Default: undefined

Detect if a card is a valid card of the specified type. If no type is provided, the card will be valid if any type is matched.

cvc

cvc.isValid(cvc, [type]) -> boolean

cvc

Required
Type: string

type

Type: string
Default: undefined

Detect if a CVC is valid card for the specified type.

expiration

isPast(month, year) -> boolean

month

Required
Type: number

year

Required
Type: number

expiration.month.parse(month) -> number

Casts the provide value a number. All of the following will be 5 after parsing:

• 5
• '05'
• '5'

month

Required
Type: string / number

expiration.month.isValid(month) -> Boolean

month

Required
Type: number

expiration.year.parse(year, [expand]) -> number

All of the following are equivalent:

• expiration.year.parse(2014)
• expiration.year.parse('2014')
• expiration.year.parse('14', true)
• expiration.year.parse(14, true)

year

Required
Type: string / number

expand

Type: boolean
Default: false

If true, the year is assumed to be a 1 or 2 digit number and is expanded to its full value.

expiration.year.format(year, [strip]) -> string

year

Required
Type: number

strip

Type: boolean
Default: false

If true, year is assumed to be a four digit number and will be converted to a two digit number.

• expiration.year.format(2014) === '2014'
• expiration.year.format(2014, true) === '14'

expiration.year.isValid(year) -> Boolean

year

Required
Type: number

expiration.year.isPast(year) -> boolean

year

Required
Type: number

License

MIT © Ben Drucker