angular-cc-library
Version:
angular credit card library
267 lines • 29.7 kB
JavaScript
const defaultFormat = /(\d{1,4})/g;
const cards = [
{
type: 'maestro',
patterns: [5018, 502, 503, 506, 56, 58, 639, 6220, 67],
format: defaultFormat,
length: [12, 13, 14, 15, 16, 17, 18, 19],
cvvLength: [3],
luhn: true,
}, {
type: 'forbrugsforeningen',
patterns: [600],
format: defaultFormat,
length: [16],
cvvLength: [3],
luhn: true,
}, {
type: 'dankort',
patterns: [5019],
format: defaultFormat,
length: [16],
cvvLength: [3],
luhn: true,
}, {
type: 'visa',
patterns: [4],
format: defaultFormat,
length: [13, 16, 19],
cvvLength: [3],
luhn: true,
}, {
type: 'mastercard',
patterns: [51, 52, 53, 54, 55, 22, 23, 24, 25, 26, 27],
format: defaultFormat,
length: [16],
cvvLength: [3],
luhn: true,
}, {
type: 'amex',
patterns: [34, 37],
format: /(\d{1,4})(\d{1,6})?(\d{1,5})?/,
length: [15],
cvvLength: [3, 4],
luhn: true,
}, {
type: 'dinersclub',
patterns: [30, 36, 38, 39],
format: /(\d{1,4})(\d{1,6})?(\d{1,4})?/,
length: [14],
cvvLength: [3],
luhn: true,
}, {
type: 'discover',
patterns: [60, 64, 65, 622],
format: defaultFormat,
length: [16],
cvvLength: [3],
luhn: true,
}, {
type: 'unionpay',
patterns: [62, 88],
format: defaultFormat,
length: [16, 17, 18, 19],
cvvLength: [3],
luhn: false,
}, {
type: 'jcb',
patterns: [35],
format: defaultFormat,
length: [16, 19],
cvvLength: [3],
luhn: true,
},
];
// @dynamic
export class CreditCard {
static cards() {
return cards;
}
static cardFromNumber(num) {
num = (num + '').replace(/\D/g, '');
for (let i = 0, len = cards.length; i < len; i++) {
const card = cards[i];
const ref = card.patterns;
for (let j = 0, len1 = ref.length; j < len1; j++) {
const pattern = ref[j];
const p = pattern + '';
if (num.substr(0, p.length) === p) {
return card;
}
}
}
}
static restrictNumeric(e) {
if (e.metaKey || e.ctrlKey) {
return true;
}
if (e.which === 32) {
return false;
}
if (e.which === 0) {
return true;
}
if (e.which < 33) {
return true;
}
const input = String.fromCharCode(e.which);
return !!/[\d\s]/.test(input);
}
static hasTextSelected(target) {
return target.selectionStart !== null && target.selectionStart !== target.selectionEnd;
}
static cardType(num) {
if (!num) {
return num;
}
const card = this.cardFromNumber(num);
if (card !== null && typeof card !== 'undefined') {
return card.type;
}
else {
return null;
}
}
static formatCardNumber(num) {
num = num.replace(/\D/g, '');
const card = this.cardFromNumber(num);
if (!card) {
return num;
}
const upperLength = card.length[card.length.length - 1];
num = num.slice(0, upperLength);
if (card.format.global) {
const matches = num.match(card.format);
if (matches != null) {
return matches.join(' ');
}
}
else {
const groups = card.format.exec(num);
if (groups == null) {
return;
}
groups.shift();
return groups.filter(Boolean).join(' ');
}
}
static safeVal(value, target, updateValue) {
let cursor = null;
const last = target.value;
let result = null;
try {
cursor = target.selectionStart;
}
catch (error) {
// do nothing
}
updateValue(value);
if (cursor !== null && target === document.activeElement) {
if (cursor === last.length) {
cursor = value.length;
}
if (last !== value) {
const prevPair = last.slice(cursor - 1, +cursor + 1 || 9e9);
const currPair = value.slice(cursor - 1, +cursor + 1 || 9e9);
const digit = value[cursor];
if (/\d/.test(digit) && prevPair === (`${digit} `) && currPair === (` ${digit}`)) {
cursor = cursor + 1;
}
}
result = cursor;
}
return result;
}
static isCardNumber(key, target) {
const digit = String.fromCharCode(key);
if (!/^\d+$/.test(digit)) {
return false;
}
if (CreditCard.hasTextSelected(target)) {
return true;
}
const value = (target.value + digit).replace(/\D/g, '');
const card = CreditCard.cardFromNumber(value);
if (card) {
return value.length <= card.length[card.length.length - 1];
}
else {
return value.length <= 16;
}
}
static restrictExpiry(key, target) {
const digit = String.fromCharCode(key);
if (!/^\d+$/.test(digit) || this.hasTextSelected(target)) {
return false;
}
const value = `${target.value}${digit}`.replace(/\D/g, '');
return value.length > 6;
}
static replaceFullWidthChars(str) {
if (str === null) {
str = '';
}
const fullWidth = '\uff10\uff11\uff12\uff13\uff14\uff15\uff16\uff17\uff18\uff19';
const halfWidth = '0123456789';
let value = '';
const chars = str.split('');
for (let i = 0; i < chars.length; i++) {
let chr = chars[i];
const idx = fullWidth.indexOf(chr);
if (idx > -1) {
chr = halfWidth[idx];
}
value += chr;
}
return value;
}
static formatExpiry(expiry) {
const parts = expiry.match(/^\D*(\d{1,2})(\D+)?(\d{1,4})?/);
if (!parts) {
return '';
}
let mon = parts[1] || '';
let sep = parts[2] || '';
const year = parts[3] || '';
if (year.length > 0) {
sep = ' / ';
}
else if (sep === ' /') {
mon = mon.substring(0, 1);
sep = '';
}
else if (mon.length === 2 || sep.length > 0) {
sep = ' / ';
}
else if (mon.length === 1 && (mon !== '0' && mon !== '1')) {
mon = `0${mon}`;
sep = ' / ';
}
return `${mon}${sep}${year}`;
}
static restrictCvc(key, target) {
const digit = String.fromCharCode(key);
if (!/^\d+$/.test(digit) || this.hasTextSelected(target)) {
return false;
}
const val = `${target.value}${digit}`;
return val.length <= 4;
}
static luhnCheck(num) {
const digits = num.split('').reverse();
let odd = true;
let sum = 0;
for (let i = 0; i < digits.length; i++) {
let digit = parseInt(digits[i], 10);
if ((odd = !odd)) {
digit *= 2;
}
if (digit > 9) {
digit -= 9;
}
sum += digit;
}
return sum % 10 === 0;
}
}
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defaultFormat = /(\\d{1,4})/g;\n\nexport interface CardDefinition {\n  type: string;\n  patterns: number[];\n  format: RegExp;\n  length: number[];\n  cvvLength: number[];\n  luhn: boolean;\n}\n\nconst cards: CardDefinition[] = [\n  {\n    type: 'maestro',\n    patterns: [5018, 502, 503, 506, 56, 58, 639, 6220, 67],\n    format: defaultFormat,\n    length: [12, 13, 14, 15, 16, 17, 18, 19],\n    cvvLength: [3],\n    luhn: true,\n  }, {\n    type: 'forbrugsforeningen',\n    patterns: [600],\n    format: defaultFormat,\n    length: [16],\n    cvvLength: [3],\n    luhn: true,\n  }, {\n    type: 'dankort',\n    patterns: [5019],\n    format: defaultFormat,\n    length: [16],\n    cvvLength: [3],\n    luhn: true,\n  }, {\n    type: 'visa',\n    patterns: [4],\n    format: defaultFormat,\n    length: [13, 16, 19],\n    cvvLength: [3],\n    luhn: true,\n  }, {\n    type: 'mastercard',\n    patterns: [51, 52, 53, 54, 55, 22, 23, 24, 25, 26, 27],\n    format: defaultFormat,\n    length: [16],\n    cvvLength: [3],\n    luhn: true,\n  }, {\n    type: 'amex',\n    patterns: [34, 37],\n    format: /(\\d{1,4})(\\d{1,6})?(\\d{1,5})?/,\n    length: [15],\n    cvvLength: [3, 4],\n    luhn: true,\n  }, {\n    type: 'dinersclub',\n    patterns: [30, 36, 38, 39],\n    format: /(\\d{1,4})(\\d{1,6})?(\\d{1,4})?/,\n    length: [14],\n    cvvLength: [3],\n    luhn: true,\n  }, {\n    type: 'discover',\n    patterns: [60, 64, 65, 622],\n    format: defaultFormat,\n    length: [16],\n    cvvLength: [3],\n    luhn: true,\n  }, {\n    type: 'unionpay',\n    patterns: [62, 88],\n    format: defaultFormat,\n    length: [16, 17, 18, 19],\n    cvvLength: [3],\n    luhn: false,\n  }, {\n    type: 'jcb',\n    patterns: [35],\n    format: defaultFormat,\n    length: [16, 19],\n    cvvLength: [3],\n    luhn: true,\n  },\n];\n\n// @dynamic\nexport class CreditCard {\n\n  public static cards() {\n    return cards;\n  }\n\n  public static cardFromNumber(num: string): CardDefinition {\n    num = (num + '').replace(/\\D/g, '');\n\n    for (let i = 0, len = cards.length; i < len; i++) {\n      const card = cards[i];\n      const ref = card.patterns;\n\n      for (let j = 0, len1 = ref.length; j < len1; j++) {\n        const pattern = ref[j];\n        const p = pattern + '';\n\n        if (num.substr(0, p.length) === p) {\n          return card;\n        }\n      }\n    }\n  }\n\n  public static restrictNumeric(e: KeyboardEvent): boolean {\n    if (e.metaKey || e.ctrlKey) {\n      return true;\n    }\n    if (e.which === 32) {\n      return false;\n    }\n    if (e.which === 0) {\n      return true;\n    }\n    if (e.which < 33) {\n      return true;\n    }\n    const input = String.fromCharCode(e.which);\n    return !!/[\\d\\s]/.test(input);\n  }\n\n  public static hasTextSelected(target: HTMLInputElement) {\n    return target.selectionStart !== null && target.selectionStart !== target.selectionEnd;\n  }\n\n  public static cardType(num: string) {\n    if (!num) {\n      return num;\n    }\n\n    const card = this.cardFromNumber(num);\n\n    if (card !== null && typeof card !== 'undefined') {\n      return card.type;\n    } else {\n      return null;\n    }\n  }\n\n  public static formatCardNumber(num: string) {\n    num = num.replace(/\\D/g, '');\n    const card = this.cardFromNumber(num);\n\n    if (!card) {\n      return num;\n    }\n\n    const upperLength = card.length[card.length.length - 1];\n    num = num.slice(0, upperLength);\n\n    if (card.format.global) {\n      const matches = num.match(card.format);\n      if (matches != null) {\n        return matches.join(' ');\n      }\n    } else {\n      const groups = card.format.exec(num);\n      if (groups == null) {\n        return;\n      }\n      groups.shift();\n      return groups.filter(Boolean).join(' ');\n    }\n  }\n\n  public static safeVal(value: string, target: HTMLInputElement, updateValue: (value: string) => void): number {\n    let cursor: number | null = null;\n    const last = target.value;\n    let result: number = null;\n\n    try {\n      cursor = target.selectionStart;\n    } catch (error) {\n      // do nothing\n    }\n\n    updateValue(value);\n\n    if (cursor !== null && target === document.activeElement) {\n      if (cursor === last.length) {\n        cursor = value.length;\n      }\n\n      if (last !== value) {\n        const prevPair = last.slice(cursor - 1, +cursor + 1 || 9e9);\n        const currPair = value.slice(cursor - 1, +cursor + 1 || 9e9);\n        const digit = value[cursor];\n\n        if (/\\d/.test(digit) && prevPair === (`${digit} `) && currPair === (` ${digit}`)) {\n          cursor = cursor + 1;\n        }\n      }\n\n      result = cursor;\n    }\n    return result;\n  }\n\n  public static isCardNumber(key: number, target: HTMLInputElement): boolean {\n    const digit = String.fromCharCode(key);\n    if (!/^\\d+$/.test(digit)) {\n      return false;\n    }\n    if (CreditCard.hasTextSelected(target)) {\n      return true;\n    }\n    const value = (target.value + digit).replace(/\\D/g, '');\n    const card = CreditCard.cardFromNumber(value);\n\n    if (card) {\n      return value.length <= card.length[card.length.length - 1];\n    } else {\n      return value.length <= 16;\n    }\n  }\n\n  public static restrictExpiry(key: number, target: HTMLInputElement) {\n    const digit = String.fromCharCode(key);\n    if (!/^\\d+$/.test(digit) || this.hasTextSelected(target)) {\n      return false;\n    }\n    const value = `${target.value}${digit}`.replace(/\\D/g, '');\n\n    return value.length > 6;\n  }\n\n  public static replaceFullWidthChars(str: string) {\n    if (str === null) {\n      str = '';\n    }\n\n    const fullWidth = '\\uff10\\uff11\\uff12\\uff13\\uff14\\uff15\\uff16\\uff17\\uff18\\uff19';\n    const halfWidth = '0123456789';\n    let value = '';\n    const chars = str.split('');\n\n    for (let i = 0; i < chars.length; i++) {\n      let chr = chars[i];\n      const idx = fullWidth.indexOf(chr);\n      if (idx > -1) {\n        chr = halfWidth[idx];\n      }\n      value += chr;\n    }\n    return value;\n  }\n\n  public static formatExpiry(expiry: string) {\n    const parts = expiry.match(/^\\D*(\\d{1,2})(\\D+)?(\\d{1,4})?/);\n\n    if (!parts) {\n      return '';\n    }\n\n    let mon  = parts[1] || '';\n    let sep  = parts[2] || '';\n    const year = parts[3] || '';\n\n    if (year.length > 0) {\n      sep = ' / ';\n    } else if (sep === ' /') {\n      mon = mon.substring(0, 1);\n      sep = '';\n    } else if (mon.length === 2 || sep.length > 0) {\n      sep = ' / ';\n    } else if (mon.length === 1 && (mon !== '0' && mon !== '1')) {\n      mon = `0${mon}`;\n      sep = ' / ';\n    }\n    return `${mon}${sep}${year}`;\n  }\n\n  public static restrictCvc(key: number, target: HTMLInputElement) {\n    const digit = String.fromCharCode(key);\n    if (!/^\\d+$/.test(digit) || this.hasTextSelected(target)) {\n      return false;\n    }\n    const val = `${target.value}${digit}`;\n    return val.length <= 4;\n  }\n\n  public static luhnCheck(num: string) {\n    const digits = num.split('').reverse();\n    let odd = true;\n    let sum = 0;\n\n    for (let i = 0; i < digits.length; i++) {\n      let digit = parseInt(digits[i], 10);\n      if ((odd = !odd)) {\n        digit *= 2;\n      }\n      if (digit > 9) {\n        digit -= 9;\n      }\n      sum += digit;\n    }\n\n    return sum % 10 === 0;\n  }\n}\n"]}