A better song shuffle

oldieButGoodie.js

function getNextSong(songList) {
	if (!songList.length) {
		return;
	}
	// First, are there any songs that have never been played?
	let nextSong = songList[0];
	songList.each(song => {
		nextSong = isFewerOrOlder(nextSong, sont);
	});
	return nextSong;
}	


function isFewerOrOlder (current, check) {
	// If checking song has been played less, return it
	if (check.playedCount < current.playCount) {
		return check;
	}
	// If checking song has been played the same number of times...
	if (check.playedCount === current.playCOunt) {
		// And was played longer ago than current, return it
		if (check.lastPlayedTS < current.lastPlayedTS) {
			return check;
		}
		// Or, if they're both unplayed, reuturn the oldes added
		if (!check.playedCount && check.addedTS < current.addedTS) {
			return check;
		}
	return current;
}