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+.. index::
+   single: Create a UX bundle
+
+Create a UX bundle
+==================
+
+.. tip::
+
+    Before reading this, you may want to have a look at
+    :doc:`Best Practices for Reusable Bundles </bundles/best_practices>`.
+
+Here are a few tricks to make your bundle install as a UX bundle.
+
+composer.json file
+------------------
+
+Your ``composer.json`` file must have the ``symfony-ux`` keyword:
+
+.. code-block:: json
+
+    {
+        "keywords": ["symfony-ux"]
+    }
+
+Assets location
+---------------
+
+Your assets must be located in one of the following directories, with a ``package.json`` file so Flex can handle it
+during install/update:
+
+* ``/assets`` (recommended)
+* ``/Resources/assets``
+* ``/src/Resources/assets``
+
+package.json file
+-----------------
+
+Your ``package.json`` file must contain a ``symfony`` config with controllers defined, and also add required packages
+to the ``peerDependencies``:
+
+.. code-block:: json
+
+    {
+        "name": "@acme/feature",
+        "version": "1.0.0",
+        "symfony": {
+            "controllers": {
+                "slug": {
+                    "main": "dist/controller.js",
+                    "fetch": "eager",
+                    "enabled": true,
+                    "autoimport": {
+                        "dist/bootstrap4-theme.css": false,
+                        "dist/bootstrap5-theme.css": true
+                    }
+                }
+            }
+        },
+        "peerDependencies": {
+            "@hotwired/stimulus": "^3.0.0",
+            "slugify": "^1.6.5"
+        }
+    }
+
+In this case, the file located at ``[assets directory]/dist/controller.js`` will be exposed.
+
+.. tip::
+
+    You can either write raw JS in this ``dist/controller.js`` file, or you can e.g. write your controller with
+    TypeScript and transpile it to JavaScript.
+
+    Here is an example to do so:
+
+    1. Add the following to your ``package.json`` file:
+
+    .. code-block:: json
+
+        {
+            "scripts": {
+                "build": "babel src --extensions .ts -d dist"
+            },
+            "devDependencies": {
+                "@babel/cli": "^7.20.7",
+                "@babel/core": "^7.20.12",
+                "@babel/plugin-proposal-class-properties": "^7.18.6",
+                "@babel/preset-env": "^7.20.2",
+                "@babel/preset-typescript": "^7.18.6",
+                "@hotwired/stimulus": "^3.2.1",
+                "typescript": "^4.9.5"
+            }
+        }
+
+    2. Run either ``npm install`` or ``yarn install`` to install the new dependencies.
+
+    3. Write your Stimulus controller with TypeScript in ``src/controller.ts``.
+
+    4. Run ``npm run build`` or ``yarn run build`` to transpile your TypeScript controller into JavaScript.
+
+To use your controller in a template (e.g. one defined in your bundle) you can use it like this:
+
+.. code-block:: html+twig
+
+    <div
+        {{ stimulus_controller('acme/feature/slug', { modal: 'my-value' }) }}
+        {#
+            will render:
+            data-controller="acme--feature--slug"
+            data-acme--feature--slug-modal-value="my-value"
+        #}
+    >
+        ...
+    </div>
+
+Don't forget to add ``symfony/webpack-encore-bundle:^1.12`` as a composer dependency to use
+Twig ``stimulus_*`` functions.
+
+.. tip::
+
+    Controller Naming: In this example, the ``name`` of the PHP package is ``acme/feature`` and the name
+    of the controller in ``package.json`` is ``slug``. So, the full controller name for Stimulus will be
+    ``acme--feature--slug``, though with the ``stimulus_controller()`` function, you can use ``acme/feature/slug``.
+
+Each controller has a number of options in ``package.json`` file:
+
+==================  ====================================================================================================
+Option              Description
+==================  ====================================================================================================
+enabled             Whether the controller should be enabled by default.
+main                Path to the controller file.
+fetch               How controller & dependencies are included when the page loads.
+                    Use ``eager`` (default) to make controller & dependencies included in the JavaScript that's
+                    downloaded when the page is loaded.
+                    Use ``lazy`` to make controller & dependencies isolated into a separate file and only downloaded
+                    asynchronously if (and when) the data-controller HTML appears on the page.
+autoimport          List of files to be imported with the controller. Useful e.g. when there are several CSS styles
+                    depending on the frontend framework used (like Bootstrap 4 or 5, Tailwind CSS...).
+                    The value must be an object with files as keys, and a boolean as value for each file to set
+                    whether the file should be imported.
+==================  ====================================================================================================