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luhn-generator

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

17 lines (10 loc) 415 B
'use strict'; var GetIntrinsic = require('../GetIntrinsic'); var $Date = GetIntrinsic('%Date%'); var callBound = require('../helpers/callBound'); var $getUTCFullYear = callBound('Date.prototype.getUTCFullYear'); // https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.3 module.exports = function YearFromTime(t) { // largest y such that this.TimeFromYear(y) <= t return $getUTCFullYear(new $Date(t)); };