Hi! Thanks for trying out ast-grep.
I have been improving ast-grep's documentation since the release of the project.
It is arguably not that good/abundant for resources compared to eslint/babel. But it has improved a lot (say, example page[0] and deep dive page[1]). The doc site is also carefully crafted to make it accessible, compared to libcst or other similar projects.
I also appreciate blogs/introductions to ast-grep if the community can help! Let me know if there are issues/problems when using ast-grep!