Gerador de CPF em massa

generateCpfs.js

const NUMBER_OF_CPFS = 100

function randomiza(n) {
  var ranNum = Math.round(Math.random() * n);
  return ranNum;
}

function mod(dividendo, divisor) {
  return Math.round(dividendo - Math.floor(dividendo / divisor) * divisor);
}

function gerarCPF() {
  let n = 9;
  let n1 = randomiza(n);
  let n2 = randomiza(n);
  let n3 = randomiza(n);
  let n4 = randomiza(n);
  let n5 = randomiza(n);
  let n6 = randomiza(n);
  let n7 = randomiza(n);
  let n8 = randomiza(n);
  let n9 = randomiza(n);
  let d1 =
    n9 * 2 +
    n8 * 3 +
    n7 * 4 +
    n6 * 5 +
    n5 * 6 +
    n4 * 7 +
    n3 * 8 +
    n2 * 9 +
    n1 * 10;
  d1 = 11 - mod(d1, 11);
  if (d1 >= 10) d1 = 0;
  let d2 =
    d1 * 2 +
    n9 * 3 +
    n8 * 4 +
    n7 * 5 +
    n6 * 6 +
    n5 * 7 +
    n4 * 8 +
    n3 * 9 +
    n2 * 10 +
    n1 * 11;
  d2 = 11 - mod(d2, 11);
  if (d2 >= 10) d2 = 0;
  retorno = '';

  cpf = '' + n1 + n2 + n3 + n4 + n5 + n6 + n7 + n8 + n9 + d1 + d2;

  return cpf;
}

const cpfs = [];
for (let i = 0; i < NUMBER_OF_CPFS; i++) {
  cpfs.push(gerarCPF());
}