Web Scraping a https://www.gob.pe/feriados para obtener los feriados aprobados por el gobierno de Perú.

feriados_peru.js

const axios = require('axios').default;
const cheerio = require('cheerio');

(async () => {
    try {
        const response = await axios.get("https://www.gob.pe/feriados");
        const body = await response.data;
        const $ = cheerio.load(body);

        const elements = $('ul > li > .holidays__list-item-date, .holidays__list-item-name').map((i, e) => e.children[0].data);

        const partialHolidays = Array
            .from(Array(elements.length).keys())
            .filter(i => !(i % 3))
            .map(i => ({
                date: createDate(elements[i], elements[i + 1]),
                partial_date: elements[i],
                month: elements[i + 1],
                motive: elements[i + 2],
                kind: elements[i + 2].includes("público") ? "public sector" : "all sectors"
            }))
        ;

        const nextHolidayPartialDate = $(".holidays__recent-holiday-date").text();
        const nextHolidayMotive = $(".holidays__recent-holiday-name").text();
        const [nextPartialDate, nextPartialMonth] = nextHolidayPartialDate.split(" de ").map(str => capitalize(str));

        const nextHoliday = {
            date: createDate(nextPartialDate, nextPartialMonth),
            partial_date: nextPartialDate,
            month: nextPartialMonth,
            motive: nextHolidayMotive,
            kind: nextHolidayMotive.includes("público") ? "public sector" : "all sectors"
        };

        console.info([nextHoliday, ...partialHolidays]);
    } catch (error) {
        console.error(error);
    }
})();

function createDate(partialDate, stringMonth) {
    const monthStrToNum = {
        Enero: "01",
        Febrero: "02",
        Marzo: "03",
        Abril: "04",
        Mayo: "05",
        Junio: "06",
        Julio: "07",
        Agosto: "08",
        Septiembre: "09",
        Octubre: "10",
        Noviembre: "11",
        Diciembre: "12"
    };
    const day = partialDate.replace(/Lunes|Martes|Miércoles|Jueves|Viernes|Sábado|Domingo/g, "").trim();
    const year = new Date().getFullYear();
    const month = monthStrToNum[stringMonth.replace(/:/, "").trim()];

    return `${year}-${month}-${day}`;
}


function capitalize(word) {
    const lower = word.toLowerCase();
    return word.charAt(0).toUpperCase() + lower.slice(1);
}