Enable podio calendar past 6 months

podio_calendar_enable.user.js

// ==UserScript==
// @name         Podio Re-enable calendar
// @namespace    https://www.prestigegifting.co.uk
// @version      0.1
// @description  Podio has limited the calendar to 6 months, this re-enables it.
// @author       Benjamin Fortune <ben@prestigegifting.co.uk>
// @match        https://podio.com/calendar
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    const config = { attributes: true, childList: false, subtree: false };
    const node = () => document.querySelector('#fullcalendar-header .prev');
    const removeDisabled = (el) => {
        if(el.classList.contains('disabled')) {
            el.classList.remove('disabled');
        }
    };
    const observer = new MutationObserver((mutations, observer) => {
        for(const mutation of mutations) {
            if(mutation.type === 'attributes' && mutation.attributeName === 'class') {
                removeDisabled(mutation.target);
            }
        }
    });
    const id = setInterval(() => {
        console.log('Looking for el');
        if(node() !== null) {
            removeDisabled(node());
            observer.observe(node(), config);
            clearInterval(id);
        }
    }, 100);
})();