How do you prevent node namespaces to get included in figwheel-main?

What's the difference between figwheel original and figwheel main? I have a project on the original and seeing if it's a good idea to migrate over to main.

@deadghost a full outline can be found here: https://figwheel.org/docs/#:~:text=Figwheel%20Main%20vs.&text=The%20Figwheel%20Main%20codebase%20is,result%20it%20starts%20much%20faster.&text=Figwheel%20Main's%20REPL%20evaluates%20on,with%20the%20same%20build%2Did.