Updates Ugglifier.

Gemfile

@@ -22,7 +22,7 @@ gem 'sass-rails', '~> 5.0'
 # Use Devise for authentication
 gem 'devise'
 # Use Uglifier as compressor for JavaScript assets
-gem 'uglifier', '>= 1.3.0'
+gem 'uglifier', '~> 4.2', '>= 4.2.1'
 # See https://github.com/rails/execjs#readme for more supported runtimes
 # gem 'mini_racer', platforms: :ruby
 # Use CoffeeScript for .coffee assets and views

Gemfile.lock

@@ -449,7 +449,7 @@ DEPENDENCIES
   sqlite3 (~> 1.4)
   turbolinks (~> 5)
   tzinfo-data
-  uglifier (>= 1.3.0)
+  uglifier (~> 4.2, >= 4.2.1)
   web-console (>= 3.3.0)
 
 RUBY VERSION

app/assets/javascripts/application.js

@@ -12,7 +12,7 @@
 //
 //= require rails-ujs
 //= require jquery3
-//= require bootstrap-sprockets
+//= require bootstrap
 //= require gritter
 //= require activestorage
 //= require turbolinks

config/environments/production.rb

@@ -112,5 +112,19 @@
   config.active_record.dump_schema_after_migration = false
 
   # Change the Uglifier parsing engine
-  config.assets.js_compressor = Uglifier.new(harmony: true)
+  config.assets.js_compressor = Uglifier.new(
+    harmony: true,
+    mangle: false,
+    compress: false,
+    output: {
+      beautify: true,
+      comments: :all
+    }
+  )
+
+
+
+
+
+
 end