chore: 🔥 Remove unsupported ruby and rails versions

Author: BookOfGreg

.rubocop.yml

@@ -1,10 +1,10 @@
 AllCops:
-  TargetRubyVersion: 2.1
+  TargetRubyVersion: 2.3
   DisplayCopNames: true
   Exclude:
     - test/dummy_sprockets/**/*
     - test/dummy_webpacker1/**/*
     - test/dummy_webpacker2/**/*
     - test/dummy_webpacker3/**/*
     - node_modules/**/*
-    - react_ujs/**/*
+    - react_ujs/**/*

.travis.yml

@@ -7,8 +7,8 @@ cache:
   bundler: true
   yarn: true
 rvm:
+  - 2.5.0
   - 2.3.0
-  - 2.1
   - jruby-9.1.9.0
 
 gemfile:
@@ -19,10 +19,6 @@ gemfile:
   - gemfiles/rails_5_no_sprockets_webpacker_2.gemfile
   - gemfiles/rails_5_no_sprockets_webpacker_3.gemfile
   # These don't have webpacker:
-  - gemfiles/rails_3.2.gemfile
-  - gemfiles/rails_4.0.5.gemfile
-  - gemfiles/rails_4.0_with_mini_racer.gemfile
-  - gemfiles/rails_4.1.gemfile
   - gemfiles/rails_4.2_sprockets_2.gemfile
   - gemfiles/rails_4.2_sprockets_3.gemfile
   - gemfiles/rails_5_no_sprockets.gemfile
@@ -31,32 +27,7 @@ gemfile:
 matrix:
   fast_finish: true
   exclude:
-    # all except rails_4.1 skipped on 2.1
-    - rvm: 2.1
-      gemfile: gemfiles/rails_3.2.gemfile
-    - rvm: 2.1
-      gemfile: gemfiles/rails_4.0.5.gemfile
-    - rvm: 2.1
-      gemfile: gemfiles/rails_4.0_with_mini_racer.gemfile
-    - rvm: 2.1
-      gemfile: gemfiles/rails_4.2_sprockets_2.gemfile
-    - rvm: 2.1
-      gemfile: gemfiles/rails_4.2_sprockets_3.gemfile
-    - rvm: 2.1
-      gemfile: gemfiles/rails_4.2_sprockets_4.gemfile
-    - rvm: 2.1
-      gemfile: gemfiles/rails_5_no_sprockets_webpacker_1_1.gemfile
-    - rvm: 2.1
-      gemfile: gemfiles/rails_5_no_sprockets_webpacker_1_x.gemfile
-    - rvm: 2.1
-      gemfile: gemfiles/rails_5_no_sprockets_webpacker_2.gemfile
-    - rvm: 2.1
-      gemfile: gemfiles/rails_5_no_sprockets_webpacker_3.gemfile
-    - rvm: 2.1
-      gemfile: gemfiles/rails_5_no_sprockets.gemfile
-    - rvm: 2.1
-      gemfile: gemfiles/rails_5.1_sprockets_4.gemfile
-    # all except 5.1_sprockets_4, 5.1_webpacker_3, 4.2_sprockets_3, and 3.2 skipped on jruby
+    # all except 5.1_sprockets_4, 5.1_webpacker_3, 4.2_sprockets_3
     - rvm: jruby-9.1.9.0
       gemfile: gemfiles/rails_4.2_sprockets_4.gemfile
     - rvm: jruby-9.1.9.0
@@ -65,12 +36,6 @@ matrix:
       gemfile: gemfiles/rails_5_no_sprockets_webpacker_1_x.gemfile
     - rvm: jruby-9.1.9.0
       gemfile: gemfiles/rails_5_no_sprockets_webpacker_2.gemfile
-    - rvm: jruby-9.1.9.0
-      gemfile: gemfiles/rails_4.0.5.gemfile
-    - rvm: jruby-9.1.9.0
-      gemfile: gemfiles/rails_4.0_with_mini_racer.gemfile
-    - rvm: jruby-9.1.9.0
-      gemfile: gemfiles/rails_4.1.gemfile
     - rvm: jruby-9.1.9.0
       gemfile: gemfiles/rails_4.2_sprockets_2.gemfile
     - rvm: jruby-9.1.9.0
@@ -85,3 +50,4 @@ before_install:
   - echo "deb http://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
   - sudo apt-get update -qq
   - sudo apt-get install -y -qq yarn
+  - gem update --system

Appraisals

@@ -70,34 +70,3 @@ appraise 'rails-4.2-sprockets_2' do
   gem 'sprockets', '~> 2.12'
   gem 'turbolinks'
 end
-
-appraise 'rails-4.1' do
-  gem 'rails', '~> 4.1.10'
-  # Just to make sure we support old Turbolinks:
-  gem 'turbolinks', '~> 2.3.0'
-end
-
-appraise 'rails-4.0-with-mini_racer' do
-  gem 'rails', '~> 4.0.13'
-  gem 'mini_racer', :platforms => :mri
-  gem 'therubyrhino', :platforms => :jruby
-  gem 'turbolinks'
-end
-
-appraise 'rails-4.0.5' do
-  # Depends on sprockets-rails ~> 2.0.0. Support for
-  # `Rails.application.assets_manifest` which is used by
-  # `ServerRendering::ManifestContainer` has only been added in
-  # sprockets-rails 2.2.2. Ensure that server rendering falls back to
-  # `ServerRendering::EnvironmentContainer`.`
-  gem 'rails', '4.0.5'
-  gem 'turbolinks'
-end
-
-appraise 'rails-3.2' do
-  gem 'rails', '~> 3.2.21'
-  gem 'rack-cache', '~> 1.6.1'
-  # Modern turbolinks depends on `Rails.application.assets` which no-worky
-  gem 'turbolinks', '~> 2.0'
-end
-