luhn-generator/update/node_modules/babel-helper-is-void-0/lib/index.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

"use strict";

module.exports = function (t) {
  return function isVoid0(expr) {
    return t.isUnaryExpression(expr, {
      operator: "void"
    }) && t.isNumericLiteral(expr.argument, {
      value: 0
    });
  };
};