Add InstallStylelintGenerator

README.md

@@ -36,6 +36,7 @@ rails generate auxiliary_rails:install_errors
 rails generate auxiliary_rails:install_eslint
 rails generate auxiliary_rails:install_rubocop
 rails generate auxiliary_rails:install_rubocop --no-specify-gems
+rails generate auxiliary_rails:install_stylelint
 ```
 
 ### View Helpers

lib/generators/auxiliary_rails/install_stylelint_generator.rb

@@ -0,0 +1,28 @@
+require 'rails'
+
+module AuxiliaryRails
+  class InstallStylelintGenerator < ::Rails::Generators::Base
+    PACKAGES = %w[
+      stylelint
+      stylelint-config-standard
+    ].freeze
+
+    source_root File.expand_path('templates/stylelint', __dir__)
+
+    def copy_config_files
+      copy_file 'stylelintrc_template.yml',
+        '.stylelintrc.yml'
+    end
+
+    def install_stylelint_packages
+      run 'yarn add -D ' + PACKAGES.join(' ')
+    end
+
+    def show_instructions
+      say %(
+        Run `stylelint` using this command:
+        => yarn run stylelint app/assets/stylesheets/
+      )
+    end
+  end
+end

lib/generators/auxiliary_rails/templates/stylelint/stylelintrc_template.yml

@@ -0,0 +1 @@
+extends: "stylelint-config-standard"