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I've long been interested in using tree-sitter to highlight and format injected languages.

For a while I maintained some custom formatter logic in Neovim, which uses tree-sitter, to scratch this itch of mine.

I've since pulled this out into a standalone binary which is editor agnostic, and can be run during CI for linting.

It turned into a really nice way to define formatting rules in a language agnostic way, and gives a lot of control to teams who want to enforce formatting for code that contains a lot of embedded languages.

It's also extensible through WASM plugins.

I hope you enjoy!