How to use the creditcards.card function in creditcards

export function getCreditCardType( number ) {
	if ( number ) {
		number = number.replace( / /g, '' );

		let cardType = creditcards.card.type( number, true );

		if ( typeof cardType === 'undefined' ) {
			return null;
		}

		// We already use 'amex' for American Express everywhere else
		if ( cardType === 'American Express' ) {
			cardType = 'amex';
		}

		// Normalize Diners as well
		if ( cardType === 'Diners Club' ) {
			cardType = 'diners';
		}

		return cardType.toLowerCase();

export function getCreditCardType( number ) {
	if ( number ) {
		number = number.replace( / /g, '' );

		let cardType = creditcards.card.type( number, true );

		if ( typeof cardType === 'undefined' ) {
			return null;
		}

		// We already use 'amex' for American Express everywhere else
		if ( cardType === 'American Express' ) {
			cardType = 'amex';
		}

		// Normalize Diners as well
		if ( cardType === 'Diners Club' ) {
			cardType = 'diners';
		}

		return cardType.toLowerCase();

isValid( value ) {
		if ( ! value ) {
			return false;
		}
		return creditcards.card.isValid( value );
	},
	error: validationError,

isValid( value ) {
		if ( ! value ) {
			return false;
		}
		return creditcards.card.isValid( value );
	},
	error: validationError,

'use strict'

var card = require('creditcards').card
var array = require('cast-array')
var partial = require('ap').partial

module.exports = factory

factory.$inject = ['$parse', '$timeout']
function factory ($parse, $timeout) {
  return {
    restrict: 'A',
    require: ['ngModel', 'ccNumber'],
    controller: function () {
      this.type = null
      this.eagerType = null
    },
    compile: function ($element, $attributes) {
      $attributes.$set('pattern', '[0-9]*')