Sweet alert dialog with spinner in AngularJs

The original sweet alert plugin is unsupported, I suggest you using SweetAlert2 plugin.

Migration is simple, here's the migration guide: Migration from SweetAlert to SweetAlert2

In SweetAlert2 there's swal.showLoading(), so you can show loading modal as easy as:

Swal.fire('Please wait')
Swal.showLoading()

<script src="https://cdn.jsdelivr.net/npm/sweetalert2@10"></script>