A dependency-free Node.js Tracer

Pretty interesting! I did something similar with UI code recently (https://github.com/omphalos/earhorn), although with the goal of runtime variable inspection instead of performance tracing. JavaScript makes instrumentation really easy and I kind of feel like the potential of this simple technology as dev tool hasn't been fully tapped.

Nice, and crazy comprehensive. I especially love redefining the wrapper using eval to match the signature of the original.

This is great! It is pretty simple to setup and the output is much easier to understand than similar tools in my opinion.

Really nice. I reckon this could be a nice learning tool too.