feat: add markdownlint, stylelint, codespell, and biome

README.md

@@ -160,10 +160,12 @@ To view configured and available formatters, as well as to see the path to the l
 - [autopep8](https://github.com/hhatto/autopep8) - A tool that automatically formats Python code to conform to the PEP 8 style guide.
 - [beautysh](https://github.com/lovesegfault/beautysh) - A Bash beautifier for the masses.
 - [black](https://github.com/psf/black) - The uncompromising Python code formatter.
+- [biome](https://github.com/biomejs/biome) - A toolchain for web projects, aimed to provide functionalities to maintain them.
 - [buf](https://buf.build/docs/lint/overview) - A new way of working with Protocol Buffers
 - [clang_format](https://www.kernel.org/doc/html/latest/process/clang-format.html) - Tool to format C/C++/… code according to a set of rules and heuristics.
 - [cljstyle](https://github.com/greglook/cljstyle) - Formatter for Clojure code.
 - [cmake_format](https://github.com/cheshirekow/cmake_format) - Parse cmake listfiles and format them nicely.
+- [codespell](https://github.com/codespell-project/codespell) - Check code for common misspellings.
 - [dart_format](https://dart.dev/tools/dart-format) - Replace the whitespace in your program with formatting that follows Dart guidelines.
 - [deno_fmt](https://deno.land/manual/tools/formatter) - Use [Deno](https://deno.land/) to format TypeScript, JavaScript/JSON and markdown.
 - [dfmt](https://github.com/dlang-community/dfmt) - Formatter for D source code.
@@ -180,6 +182,7 @@ To view configured and available formatters, as well as to see the path to the l
 - [htmlbeautifier](https://github.com/threedaymonk/htmlbeautifier) - A normaliser/beautifier for HTML that also understands embedded Ruby. Ideal for tidying up Rails templates.
 - [isort](https://github.com/PyCQA/isort) - Python utility / library to sort imports alphabetically and automatically separate them into sections and by type.
 - [jq](https://github.com/stedolan/jq) - Command-line JSON processor.
+- [markdownlint](https://github.com/DavidAnson/markdownlint) - A Node.js style checker and lint tool for Markdown/CommonMark files.
 - [latexindent](https://github.com/cmhughes/latexindent.pl) - A perl script for formatting LaTeX files that is generally included in major TeX distributions.
 - [nixfmt](https://github.com/serokell/nixfmt) - nixfmt is a formatter for Nix code, intended to apply a uniform style.
 - [nixpkgs_fmt](https://github.com/nix-community/nixpkgs-fmt) - nixpkgs-fmt is a Nix code formatter for nixpkgs.
@@ -196,6 +199,7 @@ To view configured and available formatters, as well as to see the path to the l
 - [shellharden](https://github.com/anordal/shellharden) - The corrective bash syntax highlighter
 - [shfmt](https://github.com/mvdan/sh) - A shell parser, formatter, and interpreter with `bash` support.
 - [sql_formatter](https://github.com/sql-formatter-org/sql-formatter) - A whitespace formatter for different query languages.
+- [stylelint](https://github.com/stylelint/stylelint) - A mighty CSS linter that helps you avoid errors and enforce conventions.
 - [stylua](https://github.com/JohnnyMorganz/StyLua) - An opinionated code formatter for Lua.
 - [swift_format](https://github.com/apple/swift-format) - Swift formatter from apple. Requires building from source with `swift build`.
 - [swiftformat](https://github.com/nicklockwood/SwiftFormat) - SwiftFormat is a code library and command-line tool for reformatting `swift` code on macOS or Linux.

lua/conform/formatters/biome.lua

@@ -0,0 +1,10 @@
+---@type conform.FileFormatterConfig
+return {
+  meta = {
+    url = "https://github.com/biomejs/biome",
+    description = "A toolchain for web projects, aimed to provide functionalities to maintain them.",
+  },
+  command = "biome",
+  stdin = true,
+  args = { "format", "--stdin-file-path", "$FILENAME" },
+}

lua/conform/formatters/codespell.lua

@@ -0,0 +1,14 @@
+---@type conform.FileFormatterConfig
+return {
+  meta = {
+    url = "https://github.com/codespell-project/codespell",
+    description = "Check code for common misspellings.",
+  },
+  command = "codespell",
+  stdin = false,
+  args = {
+    "$FILENAME",
+    "--write-changes",
+    "--check-hidden", -- conform's temp file is hidden
+  },
+}

lua/conform/formatters/markdownlint.lua

@@ -0,0 +1,10 @@
+---@type conform.FileFormatterConfig
+return {
+  meta = {
+    url = "https://github.com/DavidAnson/markdownlint",
+    description = "A Node.js style checker and lint tool for Markdown/CommonMark files.",
+  },
+  command = "markdownlint",
+  args = { "--fix", "$FILENAME" },
+  stdin = false,
+}

lua/conform/formatters/stylelint.lua

@@ -0,0 +1,10 @@
+---@type conform.FileFormatterConfig
+return {
+  meta = {
+    url = "https://github.com/stylelint/stylelint",
+    description = "A mighty CSS linter that helps you avoid errors and enforce conventions.",
+  },
+  command = "stylelint",
+  args = { "--stdin", "--fix" },
+  stdin = true,
+}