183 lines
6.3 KiB
JavaScript
183 lines
6.3 KiB
JavaScript
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import assertString from './util/assertString';
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/**
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* List of country codes with
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* corresponding IBAN regular expression
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* Reference: https://en.wikipedia.org/wiki/International_Bank_Account_Number
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*/
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var ibanRegexThroughCountryCode = {
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AD: /^(AD[0-9]{2})\d{8}[A-Z0-9]{12}$/,
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AE: /^(AE[0-9]{2})\d{3}\d{16}$/,
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AL: /^(AL[0-9]{2})\d{8}[A-Z0-9]{16}$/,
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AT: /^(AT[0-9]{2})\d{16}$/,
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AZ: /^(AZ[0-9]{2})[A-Z0-9]{4}\d{20}$/,
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BA: /^(BA[0-9]{2})\d{16}$/,
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BE: /^(BE[0-9]{2})\d{12}$/,
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BG: /^(BG[0-9]{2})[A-Z]{4}\d{6}[A-Z0-9]{8}$/,
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BH: /^(BH[0-9]{2})[A-Z]{4}[A-Z0-9]{14}$/,
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BR: /^(BR[0-9]{2})\d{23}[A-Z]{1}[A-Z0-9]{1}$/,
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BY: /^(BY[0-9]{2})[A-Z0-9]{4}\d{20}$/,
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CH: /^(CH[0-9]{2})\d{5}[A-Z0-9]{12}$/,
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CR: /^(CR[0-9]{2})\d{18}$/,
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CY: /^(CY[0-9]{2})\d{8}[A-Z0-9]{16}$/,
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CZ: /^(CZ[0-9]{2})\d{20}$/,
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DE: /^(DE[0-9]{2})\d{18}$/,
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DK: /^(DK[0-9]{2})\d{14}$/,
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DO: /^(DO[0-9]{2})[A-Z]{4}\d{20}$/,
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EE: /^(EE[0-9]{2})\d{16}$/,
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EG: /^(EG[0-9]{2})\d{25}$/,
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ES: /^(ES[0-9]{2})\d{20}$/,
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FI: /^(FI[0-9]{2})\d{14}$/,
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FO: /^(FO[0-9]{2})\d{14}$/,
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FR: /^(FR[0-9]{2})\d{10}[A-Z0-9]{11}\d{2}$/,
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GB: /^(GB[0-9]{2})[A-Z]{4}\d{14}$/,
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GE: /^(GE[0-9]{2})[A-Z0-9]{2}\d{16}$/,
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GI: /^(GI[0-9]{2})[A-Z]{4}[A-Z0-9]{15}$/,
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GL: /^(GL[0-9]{2})\d{14}$/,
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GR: /^(GR[0-9]{2})\d{7}[A-Z0-9]{16}$/,
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GT: /^(GT[0-9]{2})[A-Z0-9]{4}[A-Z0-9]{20}$/,
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HR: /^(HR[0-9]{2})\d{17}$/,
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HU: /^(HU[0-9]{2})\d{24}$/,
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IE: /^(IE[0-9]{2})[A-Z0-9]{4}\d{14}$/,
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IL: /^(IL[0-9]{2})\d{19}$/,
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IQ: /^(IQ[0-9]{2})[A-Z]{4}\d{15}$/,
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IR: /^(IR[0-9]{2})0\d{2}0\d{18}$/,
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IS: /^(IS[0-9]{2})\d{22}$/,
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IT: /^(IT[0-9]{2})[A-Z]{1}\d{10}[A-Z0-9]{12}$/,
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JO: /^(JO[0-9]{2})[A-Z]{4}\d{22}$/,
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KW: /^(KW[0-9]{2})[A-Z]{4}[A-Z0-9]{22}$/,
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KZ: /^(KZ[0-9]{2})\d{3}[A-Z0-9]{13}$/,
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LB: /^(LB[0-9]{2})\d{4}[A-Z0-9]{20}$/,
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LC: /^(LC[0-9]{2})[A-Z]{4}[A-Z0-9]{24}$/,
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LI: /^(LI[0-9]{2})\d{5}[A-Z0-9]{12}$/,
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LT: /^(LT[0-9]{2})\d{16}$/,
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LU: /^(LU[0-9]{2})\d{3}[A-Z0-9]{13}$/,
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LV: /^(LV[0-9]{2})[A-Z]{4}[A-Z0-9]{13}$/,
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MA: /^(MA[0-9]{26})$/,
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MC: /^(MC[0-9]{2})\d{10}[A-Z0-9]{11}\d{2}$/,
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MD: /^(MD[0-9]{2})[A-Z0-9]{20}$/,
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ME: /^(ME[0-9]{2})\d{18}$/,
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MK: /^(MK[0-9]{2})\d{3}[A-Z0-9]{10}\d{2}$/,
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MR: /^(MR[0-9]{2})\d{23}$/,
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MT: /^(MT[0-9]{2})[A-Z]{4}\d{5}[A-Z0-9]{18}$/,
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MU: /^(MU[0-9]{2})[A-Z]{4}\d{19}[A-Z]{3}$/,
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MZ: /^(MZ[0-9]{2})\d{21}$/,
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NL: /^(NL[0-9]{2})[A-Z]{4}\d{10}$/,
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NO: /^(NO[0-9]{2})\d{11}$/,
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PK: /^(PK[0-9]{2})[A-Z0-9]{4}\d{16}$/,
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PL: /^(PL[0-9]{2})\d{24}$/,
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PS: /^(PS[0-9]{2})[A-Z0-9]{4}\d{21}$/,
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PT: /^(PT[0-9]{2})\d{21}$/,
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QA: /^(QA[0-9]{2})[A-Z]{4}[A-Z0-9]{21}$/,
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RO: /^(RO[0-9]{2})[A-Z]{4}[A-Z0-9]{16}$/,
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RS: /^(RS[0-9]{2})\d{18}$/,
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SA: /^(SA[0-9]{2})\d{2}[A-Z0-9]{18}$/,
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SC: /^(SC[0-9]{2})[A-Z]{4}\d{20}[A-Z]{3}$/,
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SE: /^(SE[0-9]{2})\d{20}$/,
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SI: /^(SI[0-9]{2})\d{15}$/,
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SK: /^(SK[0-9]{2})\d{20}$/,
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SM: /^(SM[0-9]{2})[A-Z]{1}\d{10}[A-Z0-9]{12}$/,
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SV: /^(SV[0-9]{2})[A-Z0-9]{4}\d{20}$/,
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TL: /^(TL[0-9]{2})\d{19}$/,
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TN: /^(TN[0-9]{2})\d{20}$/,
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TR: /^(TR[0-9]{2})\d{5}[A-Z0-9]{17}$/,
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UA: /^(UA[0-9]{2})\d{6}[A-Z0-9]{19}$/,
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VA: /^(VA[0-9]{2})\d{18}$/,
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VG: /^(VG[0-9]{2})[A-Z0-9]{4}\d{16}$/,
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XK: /^(XK[0-9]{2})\d{16}$/
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};
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/**
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* Check if the country codes passed are valid using the
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* ibanRegexThroughCountryCode as a reference
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*
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* @param {array} countryCodeArray
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* @return {boolean}
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*/
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function hasOnlyValidCountryCodes(countryCodeArray) {
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var countryCodeArrayFilteredWithObjectIbanCode = countryCodeArray.filter(function (countryCode) {
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return !(countryCode in ibanRegexThroughCountryCode);
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});
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if (countryCodeArrayFilteredWithObjectIbanCode.length > 0) {
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return false;
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}
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return true;
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}
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/**
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* Check whether string has correct universal IBAN format
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* The IBAN consists of up to 34 alphanumeric characters, as follows:
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* Country Code using ISO 3166-1 alpha-2, two letters
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* check digits, two digits and
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* Basic Bank Account Number (BBAN), up to 30 alphanumeric characters.
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* NOTE: Permitted IBAN characters are: digits [0-9] and the 26 latin alphabetic [A-Z]
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*
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* @param {string} str - string under validation
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* @param {object} options - object to pass the countries to be either whitelisted or blacklisted
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* @return {boolean}
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*/
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function hasValidIbanFormat(str, options) {
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// Strip white spaces and hyphens
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var strippedStr = str.replace(/[\s\-]+/gi, '').toUpperCase();
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var isoCountryCode = strippedStr.slice(0, 2).toUpperCase();
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var isoCountryCodeInIbanRegexCodeObject = (isoCountryCode in ibanRegexThroughCountryCode);
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if (options.whitelist) {
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if (!hasOnlyValidCountryCodes(options.whitelist)) {
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return false;
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}
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var isoCountryCodeInWhiteList = options.whitelist.includes(isoCountryCode);
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if (!isoCountryCodeInWhiteList) {
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return false;
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}
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}
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if (options.blacklist) {
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var isoCountryCodeInBlackList = options.blacklist.includes(isoCountryCode);
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if (isoCountryCodeInBlackList) {
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return false;
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}
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}
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return isoCountryCodeInIbanRegexCodeObject && ibanRegexThroughCountryCode[isoCountryCode].test(strippedStr);
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}
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/**
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* Check whether string has valid IBAN Checksum
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* by performing basic mod-97 operation and
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* the remainder should equal 1
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* -- Start by rearranging the IBAN by moving the four initial characters to the end of the string
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* -- Replace each letter in the string with two digits, A -> 10, B = 11, Z = 35
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* -- Interpret the string as a decimal integer and
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* -- compute the remainder on division by 97 (mod 97)
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* Reference: https://en.wikipedia.org/wiki/International_Bank_Account_Number
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*
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* @param {string} str
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* @return {boolean}
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*/
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function hasValidIbanChecksum(str) {
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var strippedStr = str.replace(/[^A-Z0-9]+/gi, '').toUpperCase(); // Keep only digits and A-Z latin alphabetic
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var rearranged = strippedStr.slice(4) + strippedStr.slice(0, 4);
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var alphaCapsReplacedWithDigits = rearranged.replace(/[A-Z]/g, function (_char) {
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return _char.charCodeAt(0) - 55;
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});
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var remainder = alphaCapsReplacedWithDigits.match(/\d{1,7}/g).reduce(function (acc, value) {
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return Number(acc + value) % 97;
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}, '');
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return remainder === 1;
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}
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export default function isIBAN(str) {
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var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
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assertString(str);
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return hasValidIbanFormat(str, options) && hasValidIbanChecksum(str);
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}
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export var locales = Object.keys(ibanRegexThroughCountryCode);
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