Filter for hckrnews.com (Chromium and Firefox extension)

filter.js

var words = [
'php', 'js', 'css', 'html', 'java', 'ruby', 'rust', 'golang', 'kotlin', 'perl',
'elixir', 'elm ', 'erlang', 'clojure', 'lisp', 'racket', 'scala',
'mozilla', 'firefox', 'mysql', 'mongo', 'latex', 'webgl',
'kubernetes', 'docker', 'tensor', 'graphql', ' ml ', 'machine learning', 'artificial intelligence', 'ai ',
'google', 'facebook', 'amazon', 'aws ', 'dell', 'amd', 'verizon', 'airbnb', 'uber', 'tesla', 'spacex', 'self-driving',
'fundraising', 'investor', 'venture', 'unicorn', 'billionaire', 'musk', 'bezos', 'bill gates', 
'bitcoin', 'btc', 'ethereum', 'blockchain', 'cryptocurrenc',
'francisco', 'new york', 'california', 'bay area', 'texas', 'florida', 'wall street',
'politics', 'u.s.', 'white house', 'federal', 'president', 'congress', 'senate', 'scotus', 'court', 'police', 'military', 'fbi', 'cia', 'nsa', 'immigration', 'democracy', 'election', 'mayor', 'trump', 'biden',
'nato', 'russia', 'ukrain', 'china', 'chinese', 'gaza', 'palestin', 'israel', 'idf', 'nazi', 'terrorist',
'guardian', 'vox', 'forbes', 'bbc', 'cnn', 'fox news', 'new york times', 'nyt', 'reuters'];

function filter(list) {
    var entries = list.getElementsByClassName('entry row');
    var filteredEntries = [];

    for (var i = entries.length - 1; i >= 0; i--) {
        var link = entries[i].getElementsByClassName('link span15 story')[0];
        if (link == null)
            continue;

        var text = link.innerText.toLowerCase();
        for (var j = words.length - 1; j >= 0; j--) {
            if (text.indexOf(words[j]) != -1) {
                logEntry(entries[i], link);
                filteredEntries.push(entries[i]);
                break;
            }
        }
    }

    for (var i = filteredEntries.length - 1; i >= 0; i--) {
        filteredEntries[i].parentNode.removeChild(filteredEntries[i]);
    }
}

function logEntry(entry, link) {
    var points = entry.getElementsByClassName('points')[0].innerText;
    if (points < 100) {
        return;
    }

    var commentsCount = entry.getElementsByClassName('comments')[0].innerText;
    console.log(commentsCount + '/' + points + ' ' + link.innerText);

    var commentsLink = entry.getElementsByClassName('hn span3 story ')[0].href;
    console.log(commentsLink);
}

var entryLists = document.getElementsByClassName('entries unstyled');
for (var i = entryLists.length - 1; i >= 0; i--) {
    filter(entryLists[i]);
}

var observer = new MutationObserver(function(mutations) {
    mutations.forEach(function(item) {
        item.addedNodes.forEach(function(node) {
            filter(node);
        });
    });
});

var div = document.querySelector('#entries');
observer.observe(div, { childList: true });

manifest.json

{
    "manifest_version": 3,
    "name": "hckrnews.com filter",
    "version": "1.0",
    "description": "Filter out submissions on hckrnews.com based on keywords",
    "permissions": [
        "tabs"
    ],
    "host_permissions": [
        "https://hckrnews.com/"
    ],
    "content_scripts": [
        {
            "matches": ["https://hckrnews.com/"],
            "js": ["filter.js"]
        }
    ]
}