userscript to make japanese posts in pleromafe bigger so kanji can be read

bigger-japanese.user.js

// ==UserScript==
// @name         Bigger japanese
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://piggo.space/*
// @grant        none
// ==/UserScript==

(function() {
    function isKanji(s){
        // magic regex from stack overflow
        return !!s.match(/[\u4E00-\u9FAF\u3040-\u3096\u30A1-\u30FA\uFF66-\uFF9D\u31F0-\u31FF]/);
    }

    function rescanTL() {
        console.log('scanning tl for jp posts');
        document.querySelectorAll('.timeline-body .status-content').forEach((e) => {
            let t = e.textContent;
            if (isKanji(t)) {
                e.style.fontSize = '130%';
            }
        });
    }

    setTimeout(function () {
        rescanTL();

        const targetNode = document.querySelector('.timeline-body > .timeline');
        const config = { attributes: false, childList: true, subtree: true };

        const callback = function(mutationsList, observer) {
            rescanTL();
        };

        const observer = new MutationObserver(callback);
        observer.observe(targetNode, config);
    }, 1000);
})();