I read good things about their diffs library: https://diffs.com/
Whenever I see this acquires or hiring of successful products founders or teams by big labs I ask myself if, apart for the usual obvious reasons that any non ai model company would want them, they are also reusing this human talent to build the dataset of "how the sausage is made".
I am actually using it in the code forge I am building, https://juju.bi
In fact, Pierre's earlier iteration was a code forge and mine is heavily inspired by it.
Wow, that page crashed my iPhone!
Also the file tree library: https://trees.software/
Sadly this level of attention to detail is going to extinct