React Done Tracker

This is probably the most deceptively difficult library I have made. It simply allows you to be notified when your tree is done loading:

However, getting this to work was very difficult, with progress in one area breaking another. Unmounting components, double rendering in development, handling of children, etc. led me down multiple rabbit holes. I had no choice but to set up a full automated test environment in order to get this to work.

This library is an essential part of what powers the , and I'm proud we could make it open source. I'd really like it to get some more attention, as I think it could be very useful for other projects.

I made a Youtube video (my first one!) about it. I talk about splitting the primitive code from the React bindings, and about the edge cases we had to deal with.