Userscript that replaces the Dbree audio player with the browser default

dbreeAltPlayer.js

// ==UserScript==
// @name         Dbree Alt Player
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Replaces the Dbree audio player with the browser default
// @author       Kyiro
// @match        *://dbree.org/v/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=dbree.org
// @grant        none
// @run-at       document-end
// ==/UserScript==

const audioExtensions = {
    "aac": true,
    "mp3": true,
    "wav": true,
    "flac": true,
    "m4a": true,

    "mp4": false,
    "ogg": false,
    "webm": false,
};

function getExtension(url) {
    return url.split(/[#?]/)[0].split('.').pop().trim();
}

function replacePlayer(fileURL) {
    const embed = document.getElementById("embed");

    const fileExtension = getExtension(fileURL);
    const mediaPlayer = document.createElement(audioExtensions[fileExtension] ? "audio" : "video");

    mediaPlayer.controls = true;
    mediaPlayer.src = fileURL;
    mediaPlayer.style.width = "100%";
    mediaPlayer.style.height = "100%";

    embed.parentElement.appendChild(mediaPlayer);
    embed.remove();
}

(function main() {
    const scriptTags = document.getElementsByTagName("script");

    for (const scriptTag of scriptTags) {
        const matches = scriptTag.innerHTML.match(/'file':\s?'([^']+)'/);
        if (!matches || matches.length < 1) continue;

        replacePlayer(matches[1]);
    }
})();