The title made me believe it was just another AI assistant (thinking Janet from "The Good Place" - but for us non-dead people instead. Was pleasantly surprised to see it is a programming language and that the title was just a clever joke on that:
The Janet language is named after an immortal being in The Good Place who helps mortals navigate the afterlife, hence the title.
GNU Guile also has a PEG library in its standard library (see <https://www.gnu.org/software/guile/manual/html_node/PEG-Pars...>).
Janet's 'spork' module is kinda like their libc, and has a regex submodule; it's very likely to be installed.
Janet is my first exposure to PEGs, so nothing to compare against but I love how powerful and easy they are. I have a better grasp of them in only a few months than dabbling over 20yrs with regex.
Also there is quite a bit of The Good Place callbacks within the Janet community; numerous 3rd party modules are named after characters, for example.
I had also not seen PEGs before, but the way you can use parsing node identifiers recursively (and mutually recursively) seems very intuitive.
Elm does something similr. Neither elm/regex nor elm/parser are built-in, but elm/regex encourages you to use elm/parser instead.
btw, I like the namesake, but a language named Janet is pretty much obligated to also prioritize control.