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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

github.com/rromanovsky/luhn-generator

rromanovsky/luhn-generator

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// 20.2.2.28 Math.sign(x) module.exports = Math.sign || function sign(x) { // eslint-disable-next-line no-self-compare return (x = +x) == 0 || x != x ? x : x < 0 ? -1 : 1; };