Fix remaining issues with minor refactoring

Signed-off-by: Utkarsh Gupta <[email protected]>

.rubocop.yml

@@ -2,6 +2,18 @@ AllCops:
   NewCops: enable
   TargetRubyVersion: 2.4
 
+Lint/SuppressedException:
+  Enabled: false
+
+Metrics:
+  Enabled: false
+
+Naming/FileName:
+  Enabled: false
+
+Style/GuardClause:
+  Enabled: false
+
 Style/StringLiterals:
   Enabled: true
   EnforcedStyle: double_quotes

Rakefile

@@ -42,7 +42,7 @@ task :test_all do
           ::Process.wait pid
         end
       end
-      [$CHILD_STATUS && $CHILD_STATUS.exitstatus == 0, gemfile]
+      [$CHILD_STATUS&.exitstatus&.zero?, gemfile]
     end
   end
   failed = statuses.reject(&:first).map(&:last)

autoprefixer-rails.gemspec

@@ -15,7 +15,7 @@ Gem::Specification.new do |s|
   s.test_files       = `git ls-files -- {spec}/*`.split("\n")
   s.extra_rdoc_files = ["README.md", "LICENSE", "CHANGELOG.md"]
   s.require_path     = "lib"
-  s.required_ruby_version = ">= 2.0"
+  s.required_ruby_version = ">= 2.4"
 
   s.author   = "Andrey Sitnik"
   s.email    = "[email protected]"
@@ -30,6 +30,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency "rails"
   s.add_development_dependency "rake"
   s.add_development_dependency "rspec-rails"
+  s.add_development_dependency "rubocop"
   s.add_development_dependency "standard"
 
   s.metadata["changelog_uri"] = "https://github.com/ai/autoprefixer-rails/blob/master/CHANGELOG.md"

lib/autoprefixer-rails/processor.rb

@@ -88,7 +88,7 @@ def params_with_browsers(from = nil)
                  Rails.root.join("app/assets/stylesheets").to_s
                else
                  "."
-      end
+               end
 
       params = @params
       if !params.key?(:browsers) && !params.key?(:overrideBrowserslist) && from
@@ -169,7 +169,7 @@ def runtime
 
     # Cache autoprefixer.js content
     def read_js
-      @@js ||= begin
+      @read_js ||= begin
         root = Pathname(File.dirname(__FILE__))
         path = root.join("../../vendor/autoprefixer.js")
         path.read

lib/autoprefixer-rails/railtie.rb

@@ -4,7 +4,7 @@
 
 begin
   module AutoprefixedRails
-    class Railtie < ::Rails::Railtie
+    class Railtie < ::Rails::Railtie # :nodoc:
       rake_tasks do |app|
         require "rake/autoprefixer_tasks"
         Rake::AutoprefixerTasks.new(config) if defined? app.assets

lib/autoprefixer-rails/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
-module AutoprefixerRails
+module AutoprefixerRails # :nodoc:
   VERSION = "9.8.6" unless defined? AutoprefixerRails::VERSION
 end