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Viewing file:     isIMEI.js (1.22 KB)      -rw-r--r--

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = isIMEI;
var _assertString = _interopRequireDefault(require("./util/assertString"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var imeiRegexWithoutHypens = /^[0-9]{15}$/;
var imeiRegexWithHypens = /^\d{2}-\d{6}-\d{6}-\d{1}$/;
function isIMEI(str, options) {
  (0, _assertString.default)(str);
  options = options || {};

  // default regex for checking imei is the one without hyphens

  var imeiRegex = imeiRegexWithoutHypens;
  if (options.allow_hyphens) {
    imeiRegex = imeiRegexWithHypens;
  }
  if (!imeiRegex.test(str)) {
    return false;
  }
  str = str.replace(/-/g, '');
  var sum = 0,
    mul = 2,
    l = 14;
  for (var i = 0; i < l; i++) {
    var digit = str.substring(l - i - 1, l - i);
    var tp = parseInt(digit, 10) * mul;
    if (tp >= 10) {
      sum += tp % 10 + 1;
    } else {
      sum += tp;
    }
    if (mul === 1) {
      mul += 1;
    } else {
      mul -= 1;
    }
  }
  var chk = (10 - sum % 10) % 10;
  if (chk !== parseInt(str.substring(14, 15), 10)) {
    return false;
  }
  return true;
}
module.exports = exports.default;
module.exports.default = exports.default;