correios-sro.js

import fetch from "node-fetch";
import cheerio from "cheerio";

const TRACKING_NUMBER = "";

(async () => {
  const content = await getTrackingResponse();
  const $ = cheerio.load(content, {
    normalizeWhitespace: true,
    decodeEntities: false
  });
  const data = $("table.listEvent.sro tbody tr")
    .map((_, el) => {
      const tr = $(el);

      const firstTD = tr.find("td:nth-child(1)");
      const [date, locale] = decodeTimeAndLocale(firstTD);

      const secondTD = tr.find("td:nth-child(2)");
      const [event, description] = decodeEventAndDescription(secondTD);

      return { date, locale, event, description };
    })
    .get();

  console.log(data);
})();

async function getTrackingResponse() {
  const response = await fetch(
    "https://www2.correios.com.br/sistemas/rastreamento/resultado_semcontent.cfm",
    {
      credentials: "include",
      headers: {
        accept:
          "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8",
        "accept-language": "en-US,en;q=0.9,pt;q=0.8",
        "cache-control": "max-age=0",
        "content-type": "application/x-www-form-urlencoded",
        "upgrade-insecure-requests": "1"
      },
      referrerPolicy: "no-referrer-when-downgrade",
      body: `Objetos=${TRACKING_NUMBER}`,
      method: "POST",
      mode: "cors"
    }
  );
  return response.text();
}

function decodeTimeAndLocale(td) {
  const timeAndLoc = td
    .html()
    .split("<br>")
    .map(sentence => sentence.replace(/\s/gim, ""));

  const time = `${timeAndLoc[0]} ${timeAndLoc[1]}`;

  return [time, timeAndLoc[2]];
}

function decodeEventAndDescription(td) {
  const event = td.find("strong").text();
  const description = td
    .html()
    .split("<br>")[1]
    .split(" ")
    .map(sentence => sentence.replace(/\s/gim, ""))
    .join(" ");

  return [event, description];
}