Install Stimulus

assets/bootstrap.js

@@ -0,0 +1,11 @@
+import { startStimulusApp } from '@symfony/stimulus-bridge';
+
+// Registers Stimulus controllers from controllers.json and in the controllers/ directory
+export default startStimulusApp(require.context(
+  '@symfony/stimulus-bridge/lazy-controller-loader!./controllers',
+  true,
+  /\.[jt]sx?$/,
+));
+
+// register any custom, 3rd party controllers here
+// app.register('some_controller_name', SomeImportedController);

assets/controllers.json

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+{
+    "controllers": [],
+    "entrypoints": []
+}

assets/index.js

@@ -1,3 +1,5 @@
+import './bootstrap';
+
 import $ from 'jquery';
 
 /* Materialize imports */