Updates to core components [feature]

[jeswr]

Thanks for making this tool; it is very useful.

I just wanted to let you know that I have extracted the core logic, removed most dependencies, and converted the core components of the library to typescript (including updates to slightly more modern syntax using lebab) here. This is because I am using the package in some of my own frontend tooling.

Let me know if you would like me to create a PR with any of these changes.