Use webpack to deliver newest d3-tip.js, highlight.js and vis.js

config/initializers/assets.rb

@@ -5,17 +5,6 @@ Rails.application.config.tap do |config|
   # Version of your assets, change this if you want to expire all your assets.
   config.assets.version = '1.0'
 
-  # vis.js
-  config.assets.precompile += %w( vis.min.js )
-  config.assets.precompile += %w( vis.min.css )
-
-  # Highlight.js
-  config.assets.precompile += %w( highlight.min.js )
-  config.assets.precompile += %w( highlight-default.css )
-
-  # d3.tip
-  config.assets.precompile += %w( d3-tip.js )
-
   # Add additional assets to the asset load path.
   # config.assets.paths << Emoji.images_path
   # Add Yarn node_modules folder to the asset load path.

config/webpack/environment.js

@@ -16,6 +16,8 @@ environment.plugins.prepend('Provide', new webpack.ProvidePlugin({
         'window.Tether': "tether",
         Popper: ['popper.js', 'default'], // for Bootstrap 4
         _: 'underscore',
+        vis: 'vis',
+        hljs: 'highlight.js',
     })
 );
 
@@ -24,7 +26,6 @@ const aliasConfig = module.exports = {
     resolve: {
         alias: {
             jquery: 'jquery/src/jquery',
-            underscore: 'underscore/underscore',
         }
     }
 };