a (tampermonkey) js script that makes the entire internet yell at you

shout everything.js

// ==UserScript==
// @name         SHOUT EVERYTHING
// @version      0.1
// @description  make every website shout at you
// @author       tvoklov
// @match HTTP://*/*
// @match HTTPS://*/*
// @grant GM_log
// ==/UserScript==

(function() {
    'use strict';

    function recursiveUppercase(elem) {
        if (elem.hasChildNodes()) {
            Array.from(elem.childNodes).filter(x => !x.nodeName.toLowerCase().endsWith("script") && !x.nodeName.toLowerCase().endsWith("style")).map(recursiveUppercase);
        } else if (elem.nodeName.toLowerCase().endsWith("text")) {
            elem.textContent = elem.textContent.toUpperCase();
        }
    }

    let body = document.getElementsByTagName("body")[0];

    GM_log("running SHOUT EVERYTHING");

    recursiveUppercase(body);

    GM_log("setting up observer for SHOUT EVERYTHING");

    let mb = new MutationObserver (function (mutations) {
        for (const mutation of mutations) {
            if (mutation.addedNodes.length) {
                GM_log("mutated " + mutation.addedNodes.length + " nodes")
                Array.from(mutation.addedNodes).map(recursiveUppercase);
            }
        }
    });

    mb.observe(body, {childList : true } )
})();