cpf.js

const m1 = Array.from({ length: 11 }, (k, v) => v)
  .reverse()
  .slice(0, 9)
const m2 = Array.from({ length: 12 }, (k, v) => v)
  .reverse()
  .slice(0, 10)

let tempCpf;
let digito;
let soma;
let resto;

cpf = cpf.trim();
cpf = cpf.replace(".", "").replace("-", "");

if (cpf.length != 11 || /([0]{11})|([1]{11})|([2]{11})|([3]{11})|([4]{11})|([5]{11})|([6]{11})|([7]{11})|([8]{11})|([9]{11})/.test(cpf))
  console.log({ 1: false });

tempCpf = cpf.substring(0, 9);
soma = 0;

for(let i=0; i<9; i++)
  soma += parseInt(tempCpf[i].toString()) * m1[i];

resto = soma % 11
resto = resto >= 2
  ? 11 - resto
  : 0

digito = resto.toString();
tempCpf = tempCpf + digito;
soma = 0;

for(let i=0; i<10; i++)
  soma += parseInt(tempCpf[i].toString()) * m2[i];

resto = soma % 11
resto = resto >= 2
  ? 11 - resto
  : 0

digito = digito + resto.toString()

console.log({ 2: cpf.endsWith(digito) })