feat: add support for roc format (#342)

README.md

@@ -266,6 +266,7 @@ You can view this list in vim with `:help conform-formatters`
 - [puppet-lint](https://github.com/puppetlabs/puppet-lint) - Check that your Puppet manifests conform to the style guide.
 - [reorder-python-imports](https://github.com/asottile/reorder-python-imports) - Rewrites source to reorder python imports
 - [rescript-format](https://rescript-lang.org/) - The built-in ReScript formatter.
+- [roc](https://www.roc-lang.org/) - A fast, friendly, functional language.
 - [rubocop](https://github.com/rubocop/rubocop) - Ruby static code analyzer and formatter, based on the community Ruby style guide.
 - [rubyfmt](https://github.com/fables-tales/rubyfmt) - Ruby Autoformatter! (Written in Rust)
 - [ruff_fix](https://beta.ruff.rs/docs/) - An extremely fast Python linter, written in Rust. Fix lint errors.

doc/conform.txt

@@ -300,6 +300,7 @@ FORMATTERS                                                    *conform-formatter
 `puppet-lint` - Check that your Puppet manifests conform to the style guide.
 `reorder-python-imports` - Rewrites source to reorder python imports
 `rescript-format` - The built-in ReScript formatter.
+`roc` - A fast, friendly, functional language.
 `rubocop` - Ruby static code analyzer and formatter, based on the community Ruby
           style guide.
 `rubyfmt` - Ruby Autoformatter! (Written in Rust)

lua/conform/formatters/roc.lua

@@ -0,0 +1,10 @@
+---@type conform.FileFormatterConfig
+return {
+  meta = {
+    url = "https://github.com/roc-lang/roc",
+    description = "A fast, friendly, functional language.",
+  },
+  command = "roc",
+  args = { "format", "--stdin", "--stdout" },
+  stdin = true,
+}