Thanks for the comments. Regarding simple `ag` or `grep` usages: Yeah, that will definitely be faster (as with git grep). The problem arises when you have false positives due to either strings, variable names or other things (perhaps template or pattern matches). Then you will need extremely good regex (which leasot implements) or be really good with filtering the results.

Now what happens when you want the output in different formats? I had a person contacting me for exporting as xml since he wants to plug it in for a CI (jenkins). What if you want a JSON for your own tool?

Leasot is far from the perfect solution to TODOs, but if your use case requires anything other than simple regex, you will run into the same issues that Leasot tries to solve.

As far as speed, in my work project, parsing 552 javascript files takes around 0.2s on my mac. Some of these files being really big.