How to decrypt emails on cloudflare protected sites

index.js

import * as cheerio from "cheerio";

function getHexValue(str, index) {
  var hex = str.substr(index, 2);
  return parseInt(hex, 16);
}

function decryptEmail(encodedEmail, startIndex) {
  var decryptedEmail = "",
    key = getHexValue(encodedEmail, startIndex);

  for (var i = startIndex + 2; i < encodedEmail.length; i += 2) {
    var charCode = getHexValue(encodedEmail, i) ^ key;
    decryptedEmail += String.fromCharCode(charCode);
  }

  try {
    decryptedEmail = decodeURIComponent(escape(decryptedEmail));
  } catch (error) {
    console.log("error at decryptEmail", error.message);
  }

  if (decryptedEmail) {
    return decryptedEmail;
  }
}

const $ = cheerio.load(body);

const cfEmail = $(".__cf_email__");

if (cfEmail?.length) {
  const emails = cfEmail?.map?.((index, element) => {
    const data = $(element)?.attr?.("data-cfemail");
    if (data) {
      const email = decryptEmail(data, 0);
      return email;
    }
  });
  console.log('emails', emails)
  return emails;
}