luhn-generator/update/node_modules/core-js-pure/internals/descriptors.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 fails = require('../internals/fails');

// Thank's IE8 for his funny defineProperty
module.exports = !fails(function () {
  return Object.defineProperty({}, 1, { get: function () { return 7; } })[1] != 7;
});