Tampermonkey script to remove promoted tweets

nopromotedtweets.js

// ==UserScript==
// @name         Twitter Promoted
// @namespace    http://tampermonkey.net/
// @version      0.2
// @description  Get rid of stupid promoted tweets
// @author       Mac Gaulin
// @match        http*://twitter.com/*
// @grant        none
// ==/UserScript==

var numberTweetsHidden = 0;
var previousNumberTweetsHidden = 0;

function contains(selector, text) {
    let elements = document.querySelectorAll(selector);
    return Array.from(elements).filter(function(element) {
        return RegExp(text).test(element.textContent);
    });
}
function removePromoted() {
    let found = contains("span", "^Promoted");
    for (let i = 0; i < found.length; i++) {
        let elem = found[i];
        let article = elem.closest("article");
        if (article) {
            article.parentNode.style.backgroundColor = "red";
            article.parentNode.removeChild(article);
            numberTweetsHidden++;
        }
    }
    if(numberTweetsHidden - previousNumberTweetsHidden != 0) {
        console.log("found " + (numberTweetsHidden - previousNumberTweetsHidden) + " promoted tweets and hid them all");
        previousNumberTweetsHidden = numberTweetsHidden;
    }
}
setInterval(removePromoted, 1000);

The original script wouldn't hide the elements until they scrolled into view, but removeChild does

The original also only ran once, so if you scrolled into new elements it wouldn't find those. Now it runs every second.