Port Javascript/HTML/CSS system to React (no typescript!)

I have been developing a system to visualize graphs and similar for quite long time. However now someone else wants to include my project as React-Component. I started converting it to React. However I am making barely progress therefore I want your help. It is not important to have absolute 100% clean code or port everything to react. It is just important to make it possible to include the current app into another react project without any problems. Therefore you do not have to replace every document.getElementById... etc. If you do not think it is neccessary. The app to port is this: [login to view URL] I already started to port it to React, probably you want to start from 0, but just in case you are interested: [login to view URL] The code is freely available at GitHub and I will not change the license. Therefore you must be fine with zLib license, otherwise I can not give you the project. And one more important note: I want to circumvent typescript. Vanilla Javascript would be poerfect.