I'm missing something. What's the problem they are solving? It looks like they are offering a more limited way to make AJAX calls. Why?
To add -- it depends on jQuery? Yeah, I'm gonna have to pass. What this thing does is so small that I can't fathom why they would need to import all of jQuery just to provide a new way to do AJAX requests.
I'll just keep using React, it probably already solves whatever problem is trying to be solved here.