if cart has items

Hi guys.

This plugin is almost perfect but I need a bit of guidance if possible please.

I’ve put the shortcode for the cart in a popup and then have a button on my header that says VIEW CART – this works great when I have items in the cart, but I’d like to hide the button if there are no items in the cart.

Could you point me in the right direction for a bit of code that says…

if cart has items do this
else don’t do this.

Thanks!