Add webapp packages

assets/app.js

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+import './bootstrap.js';
+/*
+ * Welcome to your app's main JavaScript file!
+ *
+ * This file will be included onto the page via the importmap() Twig function,
+ * which should already be in your base.html.twig.
+ */
+import './styles/app.css';
+
+console.log('This log comes from assets/app.js - welcome to AssetMapper! 🎉');

assets/bootstrap.js

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+import { startStimulusApp } from '@symfony/stimulus-bundle';
+
+const app = startStimulusApp();
+// register any custom, 3rd party controllers here
+// app.register('some_controller_name', SomeImportedController);

assets/controllers.json

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+{
+    "controllers": {
+        "@symfony/ux-turbo": {
+            "turbo-core": {
+                "enabled": true,
+                "fetch": "eager"
+            },
+            "mercure-turbo-stream": {
+                "enabled": false,
+                "fetch": "eager"
+            }
+        }
+    },
+    "entrypoints": []
+}

assets/controllers/hello_controller.js

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+import { Controller } from '@hotwired/stimulus';
+
+/*
+ * This is an example Stimulus controller!
+ *
+ * Any element with a data-controller="hello" attribute will cause
+ * this controller to be executed. The name "hello" comes from the filename:
+ * hello_controller.js -> "hello"
+ *
+ * Delete this file or adapt it for your use!
+ */
+export default class extends Controller {
+    connect() {
+        this.element.textContent = 'Hello Stimulus! Edit me in assets/controllers/hello_controller.js';
+    }
+}

assets/styles/app.css

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+body {
+    background-color: skyblue;
+}