What is it?

[vvozibic]

FIrst of all, thank you for you project!

What is it, @istarkov ? How this file used in project?
https://github.com/google-map-react/google-map-react-examples/blob/master/server/trace/trace.js

I spent a little time to research you projects in organization google-map-react, maybe you want to clean up in projects(file directories/useless files/strange dependencies)? I think they look untidy. Maybe I can help.