yerf.org audio controller

Unhides audio controls, adds hotkeys for said controls, adjusts some elements
Ask a question, post a review, or report the script.
Wrap lines
// ==UserScript==
// @name         yerf.org audio controller
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  Unhides audio controls, adds hotkeys for said controls, adjusts some elements
// @author       GlawGlack
// @match        https://liltsome.yerf.org/*
// @grant        none
// @run-at       document-idle
// @license      unlicense
// ==/UserScript==

(function() {
	'use strict';

	function init() {

		const checkForAudio = setInterval(() => {
			const audioElement = document.querySelector('audio');

			if (audioElement && audioElement.src) {

				const movehere = document.querySelector('[class="player-progress"]');
				audioElement.controls = true;
				movehere.appendChild(audioElement);

				document.addEventListener('keydown', (e) => {
					if (e.target.tagName === 'INPUT' || e.target.tagName === 'TEXTAREA') return;
					switch(e.code) {
						case 'Space': e.preventDefault(); document.querySelector('[id="btnPlay"]').click(); break;

						case 'ArrowLeft': e.preventDefault(); if (event.key === 'ArrowLeft' && event.ctrlKey) {audioElement.currentTime = audioElement.currentTime - 10;}
							if (event.key === 'ArrowLeft') {audioElement.currentTime = audioElement.currentTime - 5;} break;
						case 'ArrowRight': e.preventDefault(); if (event.key === 'ArrowRight' && event.ctrlKey) {audioElement.currentTime = audioElement.currentTime + 10;}
							if (event.key === 'ArrowRight') {audioElement.currentTime = audioElement.currentTime + 5;} break;

						case 'ArrowUp': e.preventDefault(); audioElement.volume = audioElement.volume + 0.05; break;
						case 'ArrowDown': e.preventDefault(); audioElement.volume = audioElement.volume - 0.05; break;

						case 'KeyM': e.preventDefault(); if (audioElement.muted === true) {audioElement.muted = false;} else {audioElement.muted = true;} break;
					}
				});
				// smoosh default scrubber
				movehere.style.cssText =
					`
					width: 0px;
							  `;
				// make native larger
				audioElement.style.cssText =
					`
					display: unset !important;
					position: absolute !important;
					left: 20px !important;
					width: 75% !important;
					top: 50% !important;
									   `;
				// un-truncate current audio title
				document.querySelector('.player-title').style.cssText=
					`
					overflow: visible !important;
					white-space: wrap !important;
												`;
				clearInterval(checkForAudio);
			}
		}, 500);
	}

	if (document.readyState === 'loading') {
		document.addEventListener('DOMContentLoaded', init);
	} else {
		init();
	}
})();