Delete app/assets/javascripts

Also remove unused dependencies.

Gemfile

@@ -11,13 +11,9 @@ gem 'sqlite3'
 gem 'puma', '~> 3.11'
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 5.0'
-# Use Uglifier as compressor for JavaScript assets
-gem 'uglifier', '>= 1.3.0'
 # See https://github.com/rails/execjs#readme for more supported runtimes
 # gem 'mini_racer', platforms: :ruby
 
-# Use CoffeeScript for .coffee assets and views
-gem 'coffee-rails', '~> 4.2'
 # Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
 gem 'turbolinks', '~> 5'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
@@ -36,8 +32,6 @@ gem 'jbuilder', '~> 2.5'
 # Reduces boot times through caching; required in config/boot.rb
 gem 'bootsnap', '>= 1.1.0', require: false
 
-gem 'jquery-rails'
-
 gem 'webpacker', '~> 3.5'
 
 group :development, :test do

Gemfile.lock

@@ -65,17 +65,9 @@ GEM
     chromedriver-helper (2.1.0)
       archive-zip (~> 0.10)
       nokogiri (~> 1.8)
-    coffee-rails (4.2.2)
-      coffee-script (>= 2.2.0)
-      railties (>= 4.0.0)
-    coffee-script (2.4.1)
-      coffee-script-source
-      execjs
-    coffee-script-source (1.12.2)
     concurrent-ruby (1.1.4)
     crass (1.0.4)
     erubi (1.8.0)
-    execjs (2.7.0)
     ffi (1.10.0)
     globalid (0.4.2)
       activesupport (>= 4.2.0)
@@ -85,10 +77,6 @@ GEM
     jbuilder (2.8.0)
       activesupport (>= 4.2.0)
       multi_json (>= 1.2)
-    jquery-rails (4.3.3)
-      rails-dom-testing (>= 1, < 3)
-      railties (>= 4.2.0)
-      thor (>= 0.14, < 2.0)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
@@ -183,8 +171,6 @@ GEM
     turbolinks-source (5.2.0)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
-    uglifier (4.1.20)
-      execjs (>= 0.3.0, < 3)
     web-console (3.7.0)
       actionview (>= 5.0)
       activemodel (>= 5.0)
@@ -208,9 +194,7 @@ DEPENDENCIES
   byebug
   capybara (>= 2.15)
   chromedriver-helper
-  coffee-rails (~> 4.2)
   jbuilder (~> 2.5)
-  jquery-rails
   listen (>= 3.0.5, < 3.2)
   puma (~> 3.11)
   rails (~> 5.2.2)
@@ -221,7 +205,6 @@ DEPENDENCIES
   sqlite3
   turbolinks (~> 5)
   tzinfo-data
-  uglifier (>= 1.3.0)
   web-console (>= 3.3.0)
   webpacker (~> 3.5)
 

app/assets/config/manifest.js

@@ -1,3 +1,2 @@
 //= link_tree ../images
-//= link_directory ../javascripts .js
 //= link_directory ../stylesheets .css

app/views/layouts/application.html.erb

@@ -6,7 +6,6 @@
     <%= csp_meta_tag %>
 
     <%= stylesheet_link_tag    'application', media: 'all', 'data-turbolinks-track': 'reload' %>
-    <%= javascript_include_tag 'application', 'data-turbolinks-track': 'reload' %>
     <%= javascript_pack_tag 'application', 'data-turbolinks-track': 'reload' %>
   </head>
 

config/environments/production.rb

@@ -24,8 +24,7 @@
   # Apache or NGINX already handles this.
   config.public_file_server.enabled = ENV['RAILS_SERVE_STATIC_FILES'].present?
 
-  # Compress JavaScripts and CSS.
-  config.assets.js_compressor = :uglifier
+  # Compress CSS.
   # config.assets.css_compressor = :sass
 
   # Do not fallback to assets pipeline if a precompiled asset is missed.