Adopt rubyfmt for code formatting

.github/workflows/ci.yml

@@ -1,6 +1,12 @@
 name: CI
 
-on: [push, pull_request]
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+permissions:
+  contents: read
 
 jobs:
   build:
@@ -24,3 +30,14 @@ jobs:
           ruby-version: ${{ matrix.ruby }}
       - name: Run tests
         run: bundle exec rspec
+  rubyfmt:
+    name: "Rubyfmt"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@5126516654c75f76bca1de45dd82a3006d8890f9
+      - name: Install rubyfmt
+        run: |
+          curl -sL "https://github.com/fables-tales/rubyfmt/releases/download/v0.14.1/rubyfmt-v0.14.1-Linux-x86_64.tar.gz" | tar xz
+          sudo install -m 755 tmp/releases/v0.14.1-Linux/rubyfmt /usr/local/bin/rubyfmt
+      - name: Check formatting
+        run: rubyfmt --check lib/ spec/ Rakefile code_manifest.gemspec Gemfile bin/console

AGENTS.md

@@ -14,6 +14,12 @@ bundle exec rspec
 
 # Run a single spec file
 bundle exec rspec spec/path/to/spec.rb
+
+# Format code with rubyfmt (requires the rubyfmt binary on PATH, e.g. `brew install rubyfmt`)
+rubyfmt -i lib/ spec/ Rakefile code_manifest.gemspec Gemfile bin/console
+
+# Check formatting without writing changes (this is what CI runs)
+rubyfmt --check lib/ spec/ Rakefile code_manifest.gemspec Gemfile bin/console
 ```
 
 ## Architecture

Rakefile

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
 
 require "bundler/gem_tasks"
-task default: %i[]
+
+task(default: %i[])

bin/console

@@ -12,4 +12,5 @@ require "code_manifest"
 # Pry.start
 
 require "irb"
+
 IRB.start(__FILE__)

code_manifest.gemspec

@@ -5,8 +5,8 @@ require_relative "lib/code_manifest/version"
 Gem::Specification.new do |spec|
   spec.name = "code_manifest"
   spec.version = CodeManifest::VERSION
-  spec.authors = ['Gusto Engineers']
-  spec.email = ['dev@gusto.com']
+  spec.authors = ["Gusto Engineers"]
+  spec.email = ["dev@gusto.com"]
 
   spec.summary = "A code manifest"
   spec.description = "A code manifest"
@@ -19,6 +19,6 @@ Gem::Specification.new do |spec|
 
   spec.files = Dir["README.md", "lib/**/*"]
 
-  spec.add_development_dependency 'rspec'
-  spec.add_development_dependency 'debug'
+  spec.add_development_dependency("rspec")
+  spec.add_development_dependency("debug")
 end

lib/code_manifest.rb

@@ -1,14 +1,16 @@
 # frozen_string_literal: true
 
-require 'pathname'
-require 'yaml'
-require_relative 'code_manifest/version'
-require_relative 'code_manifest/manifest'
+require "pathname"
+require "yaml"
+
+require_relative "code_manifest/version"
+require_relative "code_manifest/manifest"
 
 module CodeManifest
-  class Error < StandardError; end
+  class Error < StandardError
+  end
 
-  MANIFEST_FILE = '.code_manifest.yml'
+  MANIFEST_FILE = ".code_manifest.yml"
   KEY_PATTERN = /[a-z_0-9]+/.freeze
 
   class << self

lib/code_manifest/manifest.rb

@@ -1,7 +1,8 @@
 # frozen_string_literal: true
 
-require 'digest/md5'
-require_relative 'rule'
+require "digest/md5"
+
+require_relative "rule"
 
 module CodeManifest
   class Manifest
@@ -13,6 +14,7 @@ def initialize(patterns)
       @rules ||= Array(patterns).map do |pattern|
         Rule.new(pattern)
       end
+
       @cache = {}
     end
 
@@ -31,18 +33,20 @@ def digest
     end
 
     def matches(paths)
-      Array(paths).select do |path|
-        cached_match =
-          if @cache.key?(path)
+      Array(paths)
+        .select do |path|
+          cached_match = if @cache.key?(path)
             @cache.fetch(path)
           else
             @cache[path] = [
               inclusion_rules.any? { |rule| rule.match?(path) },
               exclusion_rules.any? { |rule| rule.match?(path) }
             ]
           end
-        cached_match.first && !cached_match.last
-      end.sort!
+
+          cached_match.first && !cached_match.last
+        end
+        .sort!
     end
 
     def matches_all?(paths)

lib/code_manifest/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module CodeManifest
-  VERSION = '1.9.0'
+  VERSION = "1.9.0"
 end