luhn-generator/update/node_modules/core-js/modules/core.get-iterator-method.js

A generator of numbers that passes the validation of Luhn algorithm or Luhn formula, also known as the 'modulus 10' or 'mod 10' algorithm

var classof = require('./_classof');
var ITERATOR = require('./_wks')('iterator');
var Iterators = require('./_iterators');
module.exports = require('./_core').getIteratorMethod = function (it) {
  if (it != undefined) return it[ITERATOR]
    || it['@@iterator']
    || Iterators[classof(it)];
};