Twitch bot that plays sounds

Hello!

I followed this tutorial on how to make a Twitch bot: Glitch.
I got it working just fine, but I would like to expand on it by enabling it to play sounds according to text commands.

What I tried was adding the sound file to the assets folder, and then I put a variable in the .js file pointing to its link:
const soundEffect = ‘https://cdn.glitch.com/therestofthelink’;

I also tried to make a function that plays the sound effect:
function playSound () {
const audio = new Audio(soundEffect);
audio.play();
};

However, I get an error saying that Audio is not defined. To me this sounds like I’m missing a library to play sound effects, but more accurately it just shows a fundamental lack of undestanding in coding for web. I only have experience in programming offline applications. Could anyone give me some pointers on how to approach this?