Install stimulus.

Author: proofit404

webpack/app/index.js

@@ -1,4 +1,5 @@
 import './index.css'
 import './scripts/turbolinks.js'
+import './scripts/stimulus.js'
 import './scripts/gitterSidecar.js'
 import './scripts/highlight.js'

webpack/app/scripts/stimulus.js

@@ -0,0 +1,6 @@
+import { Application } from 'stimulus'
+import { definitionsFromContext } from 'stimulus/webpack-helpers'
+
+const application = Application.start()
+const context = require.context('../controllers', true, /\.js$/)
+application.load(definitionsFromContext(context))

webpack/package-lock.json

@@ -5,11 +5,13 @@
   "dependencies": {
     "gitter-sidecar": "^1.4.2",
     "highlight.js": "^9.13.1",
+    "stimulus": "^1.1.1",
     "tailwindcss": "^0.7.2",
     "turbolinks": "^5.2.0"
   },
   "devDependencies": {
     "@babel/core": "^7.2.0",
+    "@babel/plugin-proposal-class-properties": "^7.4.4",
     "@babel/preset-env": "^7.2.0",
     "babel-loader": "^8.0.4",
     "css-loader": "^1.0.1",

webpack/package.json

@@ -24,7 +24,8 @@ module.exports = {
         use: {
           loader: 'babel-loader',
           options: {
-            presets: ['@babel/preset-env']
+            presets: ['@babel/preset-env'],
+            plugins: ['@babel/plugin-proposal-class-properties']
           }
         }
       },