ꦫꦣꦺꦤ꧀ꦄꦤ꧀ꦠꦱꦺꦤ

PATH: opt / bitninja-dispatcher / node_modules / validator / es / lib

import assertString from './util/assertString';
var isin = /^[A-Z]{2}[0-9A-Z]{9}[0-9]$/; // this link details how the check digit is calculated:
// https://www.isin.org/isin-format/. it is a little bit
// odd in that it works with digits, not numbers. in order
// to make only one pass through the ISIN characters, the
// each alpha character is handled as 2 characters within
// the loop.

export default function isISIN(str) {
  assertString(str);

if (!isin.test(str)) {
    return false;
  }

var _double = true;
  var sum = 0; // convert values

for (var i = str.length - 2; i >= 0; i--) {
    if (str[i] >= 'A' && str[i] <= 'Z') {
      var value = str[i].charCodeAt(0) - 55;
      var lo = value % 10;
      var hi = Math.trunc(value / 10); // letters have two digits, so handle the low order
      // and high order digits separately.

for (var _i = 0, _arr = [lo, hi]; _i < _arr.length; _i++) {
        var digit = _arr[_i];

if (_double) {
          if (digit >= 5) {
            sum += 1 + (digit - 5) * 2;
          } else {
            sum += digit * 2;
          }
        } else {
          sum += digit;
        }

_double = !_double;
      }
    } else {
      var _digit = str[i].charCodeAt(0) - '0'.charCodeAt(0);

if (_double) {
        if (_digit >= 5) {
          sum += 1 + (_digit - 5) * 2;
        } else {
          sum += _digit * 2;
        }
      } else {
        sum += _digit;
      }

_double = !_double;
    }
  }

var check = Math.trunc((sum + 9) / 10) * 10 - sum;
  return +str[str.length - 1] === check;
}

[-] isISO31661Alpha3.js [edit]
[-] isBtcAddress.js [edit]
[-] isBoolean.js [edit]
[-] isHexColor.js [edit]
[-] equals.js [edit]
[-] isUppercase.js [edit]
[-] isLocale.js [edit]
[-] toInt.js [edit]
[-] toDate.js [edit]
[-] isIn.js [edit]
[-] isDivisibleBy.js [edit]
[-] isEthereumAddress.js [edit]
[-] isMagnetURI.js [edit]
[-] toBoolean.js [edit]
[-] isHexadecimal.js [edit]
[-] isVAT.js [edit]
[-] isHSL.js [edit]
[+] ..
[-] isMobilePhone.js [edit]
[-] isMD5.js [edit]
[-] stripLow.js [edit]
[-] contains.js [edit]
[-] isMimeType.js [edit]
[-] isIdentityCard.js [edit]
[-] blacklist.js [edit]
[-] isJSON.js [edit]
[-] isHash.js [edit]
[-] isPassportNumber.js [edit]
[-] isURL.js [edit]
[-] isISO31661Alpha2.js [edit]
[-] toFloat.js [edit]
[-] isNumeric.js [edit]
[-] isVariableWidth.js [edit]
[-] isUUID.js [edit]
[-] isBIC.js [edit]
[-] isDate.js [edit]
[-] isIPRange.js [edit]
[-] isStrongPassword.js [edit]
[-] unescape.js [edit]
[-] isISRC.js [edit]
[-] isSemVer.js [edit]
[-] isInt.js [edit]
[-] isEAN.js [edit]
[-] alpha.js [edit]
[-] isISSN.js [edit]
[-] rtrim.js [edit]
[-] isPostalCode.js [edit]
[-] isSurrogatePair.js [edit]
[-] isMongoId.js [edit]
[-] isBase58.js [edit]
[-] isCreditCard.js [edit]
[-] isIMEI.js [edit]
[-] isFullWidth.js [edit]
[-] isISO8601.js [edit]
[-] isBase64.js [edit]
[-] isHalfWidth.js [edit]
[-] isIBAN.js [edit]
[-] isByteLength.js [edit]
[-] isDataURI.js [edit]
[-] isAfter.js [edit]
[-] isISIN.js [edit]
[-] normalizeEmail.js [edit]
[-] isAlpha.js [edit]
[-] isBefore.js [edit]
[+] util
[-] isCurrency.js [edit]
[-] isRFC3339.js [edit]
[-] isJWT.js [edit]
[-] isWhitelisted.js [edit]
[-] isMACAddress.js [edit]
[-] isISO4217.js [edit]
[-] isOctal.js [edit]
[-] ltrim.js [edit]
[-] isLength.js [edit]
[-] whitelist.js [edit]
[-] isDecimal.js [edit]
[-] isRgbColor.js [edit]
[-] isLatLong.js [edit]
[-] isPort.js [edit]
[-] isMultibyte.js [edit]
[-] matches.js [edit]
[-] isTaxID.js [edit]
[-] isBase32.js [edit]
[-] trim.js [edit]
[-] isAlphanumeric.js [edit]
[-] isAscii.js [edit]
[-] isSlug.js [edit]
[-] isEmpty.js [edit]
[-] escape.js [edit]
[-] isEmail.js [edit]
[-] isLowercase.js [edit]
[-] isFloat.js [edit]
[-] isISBN.js [edit]
[-] isIP.js [edit]
[-] isFQDN.js [edit]
[-] isLicensePlate.js [edit]