Add Stimulus in Webpack Encore recipe

symfony/webpack-encore-bundle/1.0/assets/app.js

@@ -8,7 +8,5 @@
 // any CSS you import will output into a single css file (app.css in this case)
 import './styles/app.css';
 
-// Need jQuery? Install it with "yarn add jquery", then uncomment to import it.
-// import $ from 'jquery';
-
-console.log('Hello Webpack Encore! Edit me in assets/app.js');
+// start the Stimulus application
+import './bootstrap';

symfony/webpack-encore-bundle/1.0/assets/bootstrap.js

@@ -0,0 +1,5 @@
+import { startStimulusApp } from '@symfony/stimulus-bridge';
+import '@symfony/autoimport';
+
+// Registers Stimulus controllers from controllers.json and in the controllers/ directory
+export const app = startStimulusApp(require.context('./controllers', true, /\.(j|t)sx?$/));

symfony/webpack-encore-bundle/1.0/assets/controllers.json

@@ -0,0 +1,4 @@
+{
+    "controllers": [],
+    "entrypoints": []
+}

symfony/webpack-encore-bundle/1.0/assets/controllers/hello_controller.js

@@ -0,0 +1,16 @@
+import { Controller } from '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';
+    }
+}

symfony/webpack-encore-bundle/1.0/package.json

@@ -1,7 +1,9 @@
 {
     "devDependencies": {
-        "@symfony/webpack-encore": "^0.31.0",
+        "@symfony/stimulus-bridge": "^1.0.0",
+        "@symfony/webpack-encore": "^0.32.0",
         "core-js": "^3.0.0",
+        "stimulus": "^1.1.1",
         "regenerator-runtime": "^0.13.2",
         "webpack-notifier": "^1.6.0"
     },

symfony/webpack-encore-bundle/1.0/webpack.config.js

@@ -17,15 +17,13 @@ Encore
     /*
      * ENTRY CONFIG
      *
-     * Add 1 entry for each "page" of your app
-     * (including one that's included on every page - e.g. "app")
-     *
      * Each entry will result in one JavaScript file (e.g. app.js)
      * and one CSS file (e.g. app.css) if your JavaScript imports CSS.
      */
     .addEntry('app', './assets/app.js')
-    //.addEntry('page1', './assets/page1.js')
-    //.addEntry('page2', './assets/page2.js')
+
+    // enables the Symfony UX Stimulus bridge (used in assets/bootstrap.js)
+    .enableStimulusBridge('./assets/controllers.json')
 
     // When enabled, Webpack "splits" your files into smaller pieces for greater optimization.
     .splitEntryChunks()
@@ -47,6 +45,10 @@ Encore
     // enables hashed filenames (e.g. app.abc123.css)
     .enableVersioning(Encore.isProduction())
 
+    .configureBabel((config) => {
+        config.plugins.push('@babel/plugin-proposal-class-properties');
+    })
+
     // enables @babel/preset-env polyfills
     .configureBabelPresetEnv((config) => {
         config.useBuiltIns = 'usage';
@@ -59,16 +61,15 @@ Encore
     // uncomment if you use TypeScript
     //.enableTypeScriptLoader()
 
+    // uncomment if you use React
+    //.enableReactPreset()
+
     // uncomment to get integrity="..." attributes on your script & link tags
     // requires WebpackEncoreBundle 1.4 or higher
     //.enableIntegrityHashes(Encore.isProduction())
 
     // uncomment if you're having problems with a jQuery plugin
     //.autoProvidejQuery()
-
-    // uncomment if you use API Platform Admin (composer req api-admin)
-    //.enableReactPreset()
-    //.addEntry('admin', './assets/admin.js')
 ;
 
 module.exports = Encore.getWebpackConfig();