Include Webpack and use it for jQuery, Bootstrap and chosen.js

config/webpack/environment.js

@@ -0,0 +1,30 @@
+/*
+./config/webpack/environment.js
+Info for this file can be found
+github.com/rails/webpacker/blob/master/docs/webpack.md
+*/
+
+const { environment } = require('@rails/webpacker');
+const merge = require('webpack-merge');
+const webpack = require('webpack');
+
+// Add an additional plugin of your choosing : ProvidePlugin
+environment.plugins.prepend('Provide', new webpack.ProvidePlugin({
+        $: 'jquery',
+        JQuery: 'jquery',
+        jquery: 'jquery',
+        'window.Tether': "tether",
+        Popper: ['popper.js', 'default'], // for Bootstrap 4
+    })
+);
+
+const envConfig = module.exports = environment;
+const aliasConfig = module.exports = {
+    resolve: {
+        alias: {
+            jquery: 'jquery/src/jquery'
+        }
+    }
+};
+
+module.exports = merge(envConfig.toWebpackConfig(), aliasConfig);