prettier-plugin-cljfmt

A Prettier plugin that formats Clojure (.clj), ClojureScript (.cljs), cljc (.cljc), and EDN (.edn) files.

Powered by cljfmt compiled to JavaScript via shadow-cljs. No JVM or Clojure toolchain required at install time.

Requires Node ≥ 22 and Prettier ≥ 3.

Install

npm install --save-dev prettier-plugin-cljfmt

Usage

npx prettier --plugin prettier-plugin-cljfmt --write "src/**/*.{clj,cljs,cljc,edn}"

Or in .prettierrc.json:

{ "plugins": ["prettier-plugin-cljfmt"] }

Configuration

If a .cljfmt.edn file exists in the file's directory or any ancestor, it is picked up automatically. Otherwise, cljfmt defaults are used. See cljfmt's configuration docs for available keys.

Limitations

• Prettier's printWidth, tabWidth, and useTabs are ignored — cljfmt has its own rules.
• cljfmt does not reflow expressions across lines.

Development

npm install
npm run build    # compiles cljfmt to dist/cljfmt.js (needs Java)
npm test

License

MIT