validator-brazil/src/index.js

validacao de cpf e cnpj

var regex = /[\.\-\/]+/g;

module.exports.isCnpj = function(cnpj) {
  cnpj = cnpj.replace(regex, "");

  if (cnpj == "") return false;

  if (cnpj.length != 14) return false;

  if (
    cnpj == "00000000000000" ||
    cnpj == "11111111111111" ||
    cnpj == "22222222222222" ||
    cnpj == "33333333333333" ||
    cnpj == "44444444444444" ||
    cnpj == "55555555555555" ||
    cnpj == "66666666666666" ||
    cnpj == "77777777777777" ||
    cnpj == "88888888888888" ||
    cnpj == "99999999999999"
  )
    return false;

  var size = cnpj.length - 2;
  var numbers = cnpj.substring(0, size);
  var digits = cnpj.substring(size);
  var sum = 0;
  var pos = size - 7;
  for (var i = size; i >= 1; i--) {
    sum += numbers.charAt(size - i) * pos--;
    if (pos < 2) pos = 9;
  }
  var result = sum % 11 < 2 ? 0 : 11 - (sum % 11);
  if (result != digits.charAt(0)) return false;

  size = size + 1;
  numbers = cnpj.substring(0, size);
  sum = 0;
  pos = size - 7;
  for (var i = size; i >= 1; i--) {
    sum += numbers.charAt(size - i) * pos--;
    if (pos < 2) pos = 9;
  }
  result = sum % 11 < 2 ? 0 : 11 - (sum % 11);
  if (result != digits.charAt(1)) return false;

  return true;
};

module.exports.isCpf = function(cpf) {
  cpf = cpf.replace(regex, "");

  if (cpf == "") return false;

  if (
    cpf.length != 11 ||
    cpf == "00000000000" ||
    cpf == "11111111111" ||
    cpf == "22222222222" ||
    cpf == "33333333333" ||
    cpf == "44444444444" ||
    cpf == "55555555555" ||
    cpf == "66666666666" ||
    cpf == "77777777777" ||
    cpf == "88888888888" ||
    cpf == "99999999999"
  )
    return false;

  var add = 0;
  for (var i = 0; i < 9; i++) add += parseInt(cpf.charAt(i)) * (10 - i);
  var rev = 11 - (add % 11);
  if (rev == 10 || rev == 11) rev = 0;
  if (rev != parseInt(cpf.charAt(9))) return false;

  add = 0;

  for (var i = 0; i < 10; i++) add += parseInt(cpf.charAt(i)) * (11 - i);
  rev = 11 - (add % 11);
  if (rev == 10 || rev == 11) rev = 0;
  if (rev != parseInt(cpf.charAt(10))) return false;
  return true;
};

module.exports.isCep = function(cep) {
  cep = cep.replace(regex, "");
  var cepRegex = /^[0-9]{8}$/g;
  return cepRegex.test(cep);
};