PEE/chrome/4chan-x-prevent-csp-inject.js

// This is injected ASAP on 4chan to prevent 4chanX from adding a CSP
//  meta tag that prevents the Background WebWorker from running

const ocreate = document.createElement.bind(document);

document.createElement = (tag) => {
    if (tag != "meta")
        return ocreate(tag);
    document.createElement = ocreate; // restore
    return document.createElement('link'); // whatever to not make 4chanX crash
};