(I wrote this article a while ago). I'm not sure what you mean. If you're referring to the implementation, it's around three hundred lines [0], including the u

(I wrote this article a while ago). I'm not sure what you mean. If you're referring to the implementation, it's around three hundred lines [0], including the unfortunate problem I mention with visiting expressions, which doesn't seem like a lot. Maybe you mean the instrumented code, but that doesn't matter -- it's meant to be generated, executed and thrown away. You would never have to look at it. [0]: https://github.com/isbadawi/coverage-example https://github.com/isbadawi/coverage-example