Drop Ruby 2.4 support 💎 (#126)

.github/workflows/lint.yml

@@ -17,4 +17,4 @@ jobs:
           bundler-cache: true
 
       - name: RuboCop
-        run: bin/rubocop --format github
+        run: bin/rubocop-gradual --check

.rubocop.yml

@@ -11,6 +11,7 @@ AllCops:
     - bin/rake
     - bin/rspec
     - bin/rubocop
+    - bin/rubocop-gradual
     - vendor/**/*
 
 # Bundler

CHANGELOG.md

@@ -5,6 +5,9 @@ project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## unreleased
 
+Changes:
+- Drop support for Ruby before 2.7 (#126)
+
 Fixes:
 - Add default message to missing `message` key on advanced `input` or `output`
   checks (#117)

Gemfile

@@ -3,22 +3,3 @@
 source "https://rubygems.org"
 
 gemspec
-
-if Gem::Version.new(RUBY_VERSION) < Gem::Version.new("2.5")
-  # Here because v1.13 requires ruby version >= 2.5.
-  gem "rubocop", "< 1.13"
-
-  # Here because v1.11.0 requires ruby version >= 2.5.
-  gem "rubocop-performance", "< 1.11.0"
-
-  # Here because v2.3.0 requires ruby version >= 2.5.
-  gem "rubocop-rspec", "< 2.3.0"
-
-  # RuboCop dependency
-  # Here because v1.21.0 requires ruby version >= 2.5.
-  gem "parallel", "< 1.21"
-
-  # RuboCop dependency
-  # Here because v1.4.2 requires ruby version >= 2.5.
-  gem "rubocop-ast", "< 1.4.2"
-end

Gemfile.lock

@@ -8,74 +8,123 @@ GEM
   remote: https://rubygems.org/
   specs:
     ast (2.4.2)
-    code-scanning-rubocop (0.6.1)
-      rubocop (~> 1.0)
     coderay (1.1.3)
-    diff-lcs (1.5.0)
+    diff-lcs (1.5.1)
+    diffy (3.4.2)
     interactor (3.1.2)
+    json (2.7.1)
+    language_server-protocol (3.17.0.3)
+    lint_roller (1.1.0)
     method_source (1.0.0)
-    parallel (1.23.0)
-    parser (3.2.2.3)
+    parallel (1.24.0)
+    parser (3.3.0.5)
       ast (~> 2.4.1)
       racc
     pry (0.14.2)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    racc (1.7.1)
+    racc (1.7.3)
     rainbow (3.1.1)
-    rake (13.0.6)
-    regexp_parser (2.8.1)
-    rexml (3.2.5)
-    rspec (3.12.0)
-      rspec-core (~> 3.12.0)
-      rspec-expectations (~> 3.12.0)
-      rspec-mocks (~> 3.12.0)
-    rspec-core (3.12.1)
-      rspec-support (~> 3.12.0)
-    rspec-expectations (3.12.2)
+    rake (13.1.0)
+    regexp_parser (2.9.0)
+    rexml (3.2.6)
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-block_is_expected (1.0.5)
+    rspec-core (3.13.0)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.12.0)
-    rspec-mocks (3.12.3)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.12.0)
-    rspec-support (3.12.0)
-    rubocop (1.12.1)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.1)
+    rubocop (1.60.2)
+      json (~> 2.3)
+      language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
-      parser (>= 3.0.0.0)
+      parser (>= 3.3.0.2)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
-      rexml
-      rubocop-ast (>= 1.2.0, < 2.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.30.0, < 2.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 1.4.0, < 3.0)
-    rubocop-ast (1.29.0)
+      unicode-display_width (>= 2.4.0, < 3.0)
+    rubocop-ast (1.30.0)
       parser (>= 3.2.1.0)
-    rubocop-lts (12.0.1)
-      rubocop-ruby2_4 (~> 1.0.3)
-    rubocop-performance (1.16.0)
-      rubocop (>= 1.7.0, < 2.0)
-      rubocop-ast (>= 0.4.0)
-    rubocop-rake (0.6.0)
+    rubocop-capybara (2.20.0)
+      rubocop (~> 1.41)
+    rubocop-factory_bot (2.25.1)
+      rubocop (~> 1.41)
+    rubocop-gradual (0.3.4)
+      diff-lcs (>= 1.2.0, < 2.0)
+      diffy (~> 3.0)
+      parallel (~> 1.10)
+      rainbow (>= 2.2.2, < 4.0)
       rubocop (~> 1.0)
-    rubocop-rspec (2.4.0)
+    rubocop-lts (18.2.1)
+      rubocop-ruby2_7 (>= 2.0.4, < 3)
+      standard-rubocop-lts (>= 1.0.3, < 3)
+      version_gem (>= 1.1.2, < 3)
+    rubocop-md (1.2.2)
+      rubocop (>= 1.0)
+    rubocop-performance (1.20.2)
+      rubocop (>= 1.48.1, < 2.0)
+      rubocop-ast (>= 1.30.0, < 2.0)
+    rubocop-rake (0.6.0)
       rubocop (~> 1.0)
-      rubocop-ast (>= 1.1.0)
-    rubocop-ruby2_4 (1.0.3)
-      rubocop (= 1.12.1)
+    rubocop-rspec (2.26.1)
+      rubocop (~> 1.40)
+      rubocop-capybara (~> 2.17)
+      rubocop-factory_bot (~> 2.22)
+    rubocop-ruby2_7 (2.0.6)
+      rubocop-gradual (~> 0.3, >= 0.3.1)
+      rubocop-md (~> 1.2)
+      rubocop-rake (~> 0.6)
+      rubocop-shopify (~> 2.14)
+      rubocop-thread_safety (~> 0.5, >= 0.5.1)
+      standard-rubocop-lts (~> 1.0, >= 1.0.7)
+      version_gem (>= 1.1.3, < 3)
+    rubocop-shopify (2.15.1)
+      rubocop (~> 1.51)
+    rubocop-thread_safety (0.5.1)
+      rubocop (>= 0.90.0)
     ruby-progressbar (1.13.0)
-    unicode-display_width (2.4.2)
-    zeitwerk (2.6.8)
+    standard (1.34.0)
+      language_server-protocol (~> 3.17.0.2)
+      lint_roller (~> 1.0)
+      rubocop (~> 1.60)
+      standard-custom (~> 1.0.0)
+      standard-performance (~> 1.3)
+    standard-custom (1.0.2)
+      lint_roller (~> 1.0)
+      rubocop (~> 1.50)
+    standard-performance (1.3.1)
+      lint_roller (~> 1.1)
+      rubocop-performance (~> 1.20.2)
+    standard-rubocop-lts (1.0.9)
+      standard (>= 1.31.1, < 2)
+      standard-custom (>= 1.0.1, < 2)
+      standard-performance (>= 1.2, < 2)
+      version_gem (>= 1.1.3, < 4)
+    unicode-display_width (2.5.0)
+    version_gem (1.1.3)
+    zeitwerk (2.6.13)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  code-scanning-rubocop
   interactor
   pry
   rake
   rspec
-  rubocop-lts (~> 12.0, >= 12.0.1)
+  rspec-block_is_expected (>= 1.0)
+  rubocop-gradual (>= 0.3)
+  rubocop-lts (~> 18.2)
   rubocop-performance
   rubocop-rake
   rubocop-rspec

bin/rubocop-gradual

@@ -0,0 +1,27 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+#
+# This file was generated by Bundler.
+#
+# The application 'rubocop-gradual' 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) =~ /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-gradual", "rubocop-gradual")

service_actor.gemspec

@@ -32,7 +32,7 @@ Gem::Specification.new do |spec|
     `git ls-files -z lib`.split("\x0")
   end
 
-  spec.required_ruby_version = [">= 2.4"]
+  spec.required_ruby_version = [">= 2.7"]
 
   # Loader
   spec.add_runtime_dependency "zeitwerk"
@@ -46,10 +46,17 @@ Gem::Specification.new do |spec|
   # Debugger
   spec.add_development_dependency "pry"
 
-  # Linting rubocop-lts v12 is a rubocop wrapper for Ruby >= 2.4,
+  # Linting rubocop-lts is a RuboCop wrapper for Ruby
   #   and should only be bumped when dropping old Ruby support
-  # see: https://dev.to/pboling/rubocop-lts-1e31
-  spec.add_development_dependency "rubocop-lts", ["~> 12.0", ">= 12.0.1"]
+  # see: https://rubocop-lts.gitlab.io/HOW_TO_UPGRADE_RUBY/
+  spec.add_development_dependency "rubocop-lts", "~> 18.2"
+
+  # rubocop-lts dependency. Can be removed when RuboCop LTS is upgraded.
+  # https://github.com/sunny/actor/pull/126#issuecomment-1966682674
+  spec.add_development_dependency "rspec-block_is_expected", ">= 1.0"
+
+  # Update RuboCop rules gradually.
+  spec.add_development_dependency "rubocop-gradual", ">= 0.3"
 
   # Lint RSpec code
   spec.add_development_dependency "rubocop-rspec"
@@ -60,9 +67,6 @@ Gem::Specification.new do |spec|
   # Add Rakefile linting
   spec.add_development_dependency "rubocop-rake"
 
-  # Formatter for GitHub’s code scanning
-  spec.add_development_dependency "code-scanning-rubocop"
-
   # For testing Interactor migration support
   spec.add_development_dependency "interactor"
 end