We did release the npm package because indeed we create a web demo and thought people might want to also use it. We know it is not as fast as the python version or a C++ version -- which why we did mark it as experimental.

The release include the python package and the cli which are quite fast and is the main way we did expect people to use -- sorry if that hasn't be clear in the post.

The goal of the release is to offer a tool that is far more accurate that other tools and works on the major file types as we hope it to be useful to the community.

Glad to hear it worked on your files