php poptart

poptart.js

NodeList.prototype[Symbol.iterator] = [][Symbol.iterator];
new MutationObserver( rec => rec.map( n => [...n.addedNodes].map(parser) ) )
.observe(document.body, { childList: true, subtree: true });
[...document.querySelectorAll('.user-container .message')].map(parser);
function parser(node) {
    if( node.classList && node.classList.contains('message') && !node.classList.contains('pending') ) {
        if( /\bphp\b/gi.test(node.textContent ) ) {
            node.innerHTML = node.innerHTML.replace(/\bphp\b/gi, 'Poptart');
        }
    }
}