It's open source. If you want to use the functionality but don't trust a random internet user named ankitpokhrel, you can literally gut the project, copy-paste the code you understand, get basic functionality to work, and you can be pretty much certain that there is nothing nefarious going on.

I have done that multiple times. It's not very time demanding, because the working code is there, and all you're doing is essentially deleting code you either don't understand, or don't need. At the same time, you're reading the code you do use.