🚨Fix Rubocop lint errors

bin/spring

@@ -8,7 +8,7 @@ unless defined?(Spring)
   require 'bundler'
 
   lockfile = Bundler::LockfileParser.new(Bundler.default_lockfile.read)
-  if spring = lockfile.specs.detect { |spec| spec.name == "spring" }
+  if spring = lockfile.specs.detect { |spec| spec.name == 'spring' }
     Gem.use_paths Gem.dir, Bundler.bundle_path.to_s, *Gem.path
     gem 'spring', spring.version
     require 'spring/binstub'

bin/webpack

@@ -1,19 +1,19 @@
 #!/usr/bin/env ruby
 
-ENV["RAILS_ENV"] ||= ENV["RACK_ENV"] || "development"
-ENV["NODE_ENV"]  ||= "development"
+ENV['RAILS_ENV'] ||= ENV['RACK_ENV'] || 'development'
+ENV['NODE_ENV']  ||= 'development'
 
-require "pathname"
-ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
-  Pathname.new(__FILE__).realpath)
+require 'pathname'
+ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../Gemfile',
+                                           Pathname.new(__FILE__).realpath)
 
-require "rubygems"
-require "bundler/setup"
+require 'rubygems'
+require 'bundler/setup'
 
-require "webpacker"
-require "webpacker/webpack_runner"
+require 'webpacker'
+require 'webpacker/webpack_runner'
 
-APP_ROOT = File.expand_path("..", __dir__)
+APP_ROOT = File.expand_path('..', __dir__)
 Dir.chdir(APP_ROOT) do
   Webpacker::WebpackRunner.run(ARGV)
 end

bin/yarn

@@ -1,11 +1,9 @@
 #!/usr/bin/env ruby
 APP_ROOT = File.expand_path('..', __dir__)
 Dir.chdir(APP_ROOT) do
-  begin
-    exec "yarnpkg", *ARGV
-  rescue Errno::ENOENT
-    $stderr.puts "Yarn executable was not detected in the system."
-    $stderr.puts "Download Yarn at https://yarnpkg.com/en/docs/install"
-    exit 1
-  end
+  exec 'yarnpkg', *ARGV
+rescue Errno::ENOENT
+  warn 'Yarn executable was not detected in the system.'
+  warn 'Download Yarn at https://yarnpkg.com/en/docs/install'
+  exit 1
 end