Use Sorbet

.rubocop.yml

@@ -4,8 +4,16 @@ inherit_from:
 require:
   - rubocop-rails
   - rubocop-capybara
+  - rubocop-sorbet
 
 AllCops:
   TargetRubyVersion: 3.3.0
   Exclude:
     - bin/bundle
+
+Style/ClassAndModuleChildren:
+  Exclude:
+    - sorbet
+
+Sorbet/TrueSigil:
+  Enabled: true

Gemfile

@@ -41,6 +41,15 @@ group :development do
   gem "rack-mini-profiler", "~> 2.0"
   # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
   gem "spring"
+  # Ruby LSP features for Rails
+  gem "ruby-lsp-rails"
+  # Code linting
+  gem "rubocop", require: false
+  gem "rubocop-capybara"
+  gem "rubocop-rails", require: false
+  gem "rubocop-sorbet", require: false
+  gem "sorbet", require: false
+  gem "tapioca", require: false
 end
 
 group :test do
@@ -60,10 +69,7 @@ gem "view_component"
 # Blog engine
 gem "blog", path: "blog"
 
-# Code linting
-gem "rubocop", require: false
-gem "rubocop-capybara"
-gem "rubocop-rails", require: false
+gem "sorbet-runtime"
 
 gem "tailwindcss-rails"
 

Gemfile.lock

@@ -188,6 +188,7 @@ GEM
       timeout
     net-smtp (0.4.0)
       net-protocol
+    netrc (0.11.0)
     nio4r (2.7.0)
     nokogiri (1.15.5)
       mini_portile2 (~> 2.8.2)
@@ -196,6 +197,8 @@ GEM
     parser (3.2.2.4)
       ast (~> 2.4.1)
       racc
+    prettier_print (1.2.1)
+    prism (0.19.0)
     psych (5.1.2)
       stringio
     public_suffix (4.0.6)
@@ -221,6 +224,9 @@ GEM
       nokogiri (~> 1.14)
     rainbow (3.1.1)
     rake (13.1.0)
+    rbi (0.1.6)
+      prism (>= 0.18.0, < 0.20)
+      sorbet-runtime (>= 0.5.9204)
     rdoc (6.6.2)
       psych (>= 4.0.0)
     redcarpet (3.6.0)
@@ -247,6 +253,18 @@ GEM
       activesupport (>= 4.2.0)
       rack (>= 1.1)
       rubocop (>= 1.7.0, < 2.0)
+    rubocop-sorbet (0.7.7)
+      rubocop (>= 0.90.0)
+    ruby-lsp (0.13.4)
+      language_server-protocol (~> 3.17.0)
+      prism (>= 0.19.0, < 0.20)
+      sorbet-runtime (>= 0.5.10782)
+    ruby-lsp-rails (0.2.8)
+      actionpack (>= 6.0)
+      activerecord (>= 6.0)
+      railties (>= 6.0)
+      ruby-lsp (>= 0.13.0, < 0.14.0)
+      sorbet-runtime (>= 0.5.9897)
     ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)
     rubyzip (2.3.2)
@@ -255,6 +273,18 @@ GEM
       rexml (~> 3.2)
       rubyzip (>= 1.2.2)
       websocket (~> 1.0)
+    sorbet (0.5.11190)
+      sorbet-static (= 0.5.11190)
+    sorbet-runtime (0.5.11190)
+    sorbet-static (0.5.11190-universal-darwin)
+    sorbet-static-and-runtime (0.5.11190)
+      sorbet (= 0.5.11190)
+      sorbet-runtime (= 0.5.11190)
+    spoom (1.2.4)
+      erubi (>= 1.10.0)
+      sorbet-static-and-runtime (>= 0.5.10187)
+      syntax_tree (>= 6.1.1)
+      thor (>= 0.19.2)
     spring (4.0.0)
     sprockets (4.0.2)
       concurrent-ruby (~> 1.0)
@@ -266,10 +296,21 @@ GEM
     stimulus-rails (1.3.0)
       railties (>= 6.0.0)
     stringio (3.1.0)
+    syntax_tree (6.2.0)
+      prettier_print (>= 1.2.0)
     tailwindcss-rails (2.1.0-x86_64-darwin)
       railties (>= 6.0.0)
     tailwindcss-rails (2.1.0-x86_64-linux)
       railties (>= 6.0.0)
+    tapioca (0.11.15)
+      bundler (>= 2.2.25)
+      netrc (>= 0.11.0)
+      parallel (>= 1.21.0)
+      rbi (>= 0.1.4, < 0.2)
+      sorbet-static-and-runtime (>= 0.5.10820)
+      spoom (~> 1.2.0, >= 1.2.0)
+      thor (>= 1.2.0)
+      yard-sorbet
     thor (1.3.0)
     timeout (0.4.1)
     turbo-rails (1.5.0)
@@ -299,6 +340,10 @@ GEM
     websocket-extensions (0.1.5)
     xpath (3.2.0)
       nokogiri (~> 1.8)
+    yard (0.9.34)
+    yard-sorbet (0.8.1)
+      sorbet-runtime (>= 0.5)
+      yard (>= 0.9)
     zeitwerk (2.6.12)
 
 PLATFORMS
@@ -322,11 +367,16 @@ DEPENDENCIES
   rubocop
   rubocop-capybara
   rubocop-rails
+  rubocop-sorbet
+  ruby-lsp-rails
   selenium-webdriver (= 4.0.0.beta3)
+  sorbet
+  sorbet-runtime
   spring
   sprockets-rails
   stimulus-rails
   tailwindcss-rails
+  tapioca
   turbo-rails
   tzinfo-data
   view_component

app/components/application_component.rb

@@ -1,3 +1,4 @@
+# typed: true
 # frozen_string_literal: true
 
 class ApplicationComponent < ViewComponent::Base

app/components/application_page_component.rb

@@ -1,3 +1,4 @@
+# typed: true
 # frozen_string_literal: true
 
 class ApplicationPageComponent < ApplicationComponent

app/components/footer_component.rb

@@ -1,3 +1,4 @@
+# typed: true
 # frozen_string_literal: true
 
 class FooterComponent < ApplicationComponent

app/components/header_component.rb

@@ -1,3 +1,4 @@
+# typed: true
 # frozen_string_literal: true
 
 class HeaderComponent < ApplicationComponent

app/components/talk_list_component.rb

@@ -1,3 +1,4 @@
+# typed: true
 # frozen_string_literal: true
 
 class TalkListComponent < ApplicationComponent

app/controllers/application_controller.rb

@@ -1,3 +1,4 @@
+# typed: true
 # frozen_string_literal: true
 
 class ApplicationController < ActionController::Base

app/controllers/talks_controller.rb

@@ -1,3 +1,4 @@
+# typed: true
 # frozen_string_literal: true
 
 class TalksController < ApplicationController

app/helpers/application_helper.rb

@@ -1,3 +1,4 @@
+# typed: true
 # frozen_string_literal: true
 
 module ApplicationHelper

app/helpers/talks_helper.rb

@@ -1,3 +1,4 @@
+# typed: true
 # frozen_string_literal: true
 
 module TalksHelper

app/models/application_record.rb

@@ -1,8 +1,10 @@
+# typed: true
 # frozen_string_literal: true
 
 class ApplicationRecord < FrozenRecord::Base
   self.base_path = Rails.root.join("db")
   self.auto_reloading = true
+  self.abstract_class = true
 
   add_index(:id, unique: true)
 end

app/models/talk.rb

@@ -1,3 +1,4 @@
+# typed: true
 # frozen_string_literal: true
 
 class Talk < ApplicationRecord

bin/rubocop

@@ -0,0 +1,27 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+#
+# This file was generated by Bundler.
+#
+# The application 'rubocop' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../Gemfile", __dir__)
+
+bundle_binstub = File.expand_path("bundle", __dir__)
+
+if File.file?(bundle_binstub)
+  if File.read(bundle_binstub, 300).include?("This file was generated by Bundler")
+    load(bundle_binstub)
+  else
+    abort("Your `bin/bundle` was not generated by Bundler, so this binstub cannot run.
+Replace `bin/bundle` by running `bundle binstubs bundler --force`, then run this command again.")
+  end
+end
+
+require "rubygems"
+require "bundler/setup"
+
+load Gem.bin_path("rubocop", "rubocop")

bin/srb

@@ -0,0 +1,27 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+#
+# This file was generated by Bundler.
+#
+# The application 'srb' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../Gemfile", __dir__)
+
+bundle_binstub = File.expand_path("bundle", __dir__)
+
+if File.file?(bundle_binstub)
+  if File.read(bundle_binstub, 300).include?("This file was generated by Bundler")
+    load(bundle_binstub)
+  else
+    abort("Your `bin/bundle` was not generated by Bundler, so this binstub cannot run.
+Replace `bin/bundle` by running `bundle binstubs bundler --force`, then run this command again.")
+  end
+end
+
+require "rubygems"
+require "bundler/setup"
+
+load Gem.bin_path("sorbet", "srb")

bin/tapioca

@@ -0,0 +1,27 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+#
+# This file was generated by Bundler.
+#
+# The application 'tapioca' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../Gemfile", __dir__)
+
+bundle_binstub = File.expand_path("bundle", __dir__)
+
+if File.file?(bundle_binstub)
+  if File.read(bundle_binstub, 300).include?("This file was generated by Bundler")
+    load(bundle_binstub)
+  else
+    abort("Your `bin/bundle` was not generated by Bundler, so this binstub cannot run.
+Replace `bin/bundle` by running `bundle binstubs bundler --force`, then run this command again.")
+  end
+end
+
+require "rubygems"
+require "bundler/setup"
+
+load Gem.bin_path("tapioca", "tapioca")

blog/Gemfile

@@ -16,3 +16,5 @@ gem "importmap-rails"
 
 gem "actionpack-action_caching"
 gem "rails", github: "rails/rails"
+
+gem "sorbet-runtime"

blog/Gemfile.lock

@@ -209,6 +209,7 @@ GEM
     reline (0.4.1)
       io-console (~> 0.5)
     ruby2_keywords (0.0.5)
+    sorbet-runtime (0.5.11247)
     sprockets (4.0.3)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
@@ -251,6 +252,7 @@ DEPENDENCIES
   capybara
   importmap-rails
   rails!
+  sorbet-runtime
 
 BUNDLED WITH
    2.4.20

blog/app/components/blog/application_component.rb

@@ -1,7 +1,8 @@
+# typed: true
 # frozen_string_literal: true
 
 module Blog
   class ApplicationComponent < ::ApplicationComponent
-    include(Engine.routes.url_helpers)
+    T.unsafe(self).include(Engine.routes.url_helpers)
   end
 end

blog/app/components/blog/article_component.rb

@@ -1,3 +1,4 @@
+# typed: true
 # frozen_string_literal: true
 
 module Blog

blog/app/components/blog/article_list_component.rb

@@ -1,3 +1,4 @@
+# typed: true
 # frozen_string_literal: true
 
 module Blog

blog/app/controllers/blog/application_controller.rb

@@ -1,3 +1,4 @@
+# typed: true
 # frozen_string_literal: true
 
 module Blog

blog/app/controllers/blog/articles_controller.rb

@@ -1,3 +1,4 @@
+# typed: true
 # frozen_string_literal: true
 
 module Blog

blog/app/helpers/blog/application_helper.rb

@@ -1,3 +1,4 @@
+# typed: true
 # frozen_string_literal: true
 
 module Blog

blog/app/helpers/blog/articles_helper.rb

@@ -1,3 +1,4 @@
+# typed: true
 # frozen_string_literal: true
 
 module Blog

blog/app/models/blog/application_record.rb

@@ -1,9 +1,11 @@
+# typed: true
 # frozen_string_literal: true
 
 module Blog
   class ApplicationRecord < FrozenRecord::Base
     self.base_path = Engine.root.join("db")
     self.auto_reloading = true
+    self.abstract_class = true
 
     add_index(:id, unique: true)
   end

blog/app/models/blog/article.rb

@@ -1,3 +1,4 @@
+# typed: true
 # frozen_string_literal: true
 
 module Blog

blog/app/models/blog/author.rb

@@ -1,3 +1,4 @@
+# typed: true
 # frozen_string_literal: true
 
 module Blog

blog/config/routes.rb

@@ -1,3 +1,4 @@
+# typed: true
 # frozen_string_literal: true
 
 Blog::Engine.routes.draw do

blog/lib/blog.rb

@@ -1,3 +1,4 @@
+# typed: true
 # frozen_string_literal: true
 
 require "yaml"