Máscara de CPF e CNPJ

maskCPFCNPJ.js

function maskCPF(element = new HTMLInputElement()) {
    let cpfAtualizado;
    const inputCpf = element;
    const cpfAtual = element.value;
    cpfAtualizado = cpfAtual.replace(
        /(\d{3})(\d{3})(\d{3})(\d{2})/,
        (_regex, one, two, three, four) => `${one}.${two}.${three}-${four}`,
    );
    inputCpf.value = cpfAtualizado;
    return;
}
function maskCNPJ(element = new HTMLInputElement()) {
    let cpfAtualizado;
    const inputCpf = element;
    const cpfAtual = element.value;
    cpfAtualizado = cpfAtual.replace(
        /(\d{2})(\d{3})(\d{3})(\d{4})(\d{2})/,
        (_regex, one, two, three, four, five) =>
            `${one}.${two}.${three}/${four}-${five}`,
    );
    inputCpf.value = cpfAtualizado;
    return;
}