How to test if a Bootstrap 5 modal is showing/visible

First, how do we programmatically show a modal in BS5 (which no longer uses jQuery)? Like so:

const coolModal = new bootstrap.Modal('#cool-fricken-modal');
coolModal.show();

Now, let’s say you want to know if said modal is already open or not. Check it like this:

coolModal._isShown // true/false