[AssetMapper] Put importmap in polyfill so it can be hosted locally easily

alexandre-daubois · alexandre-daubois · commit dfc57dbc69b3 · 2023-10-19T20:01:36.000+02:00
diff --git a/frontend/asset_mapper.rst b/frontend/asset_mapper.rst
@@ -1032,14 +1032,20 @@ you expect are being included in the asset map.
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Configure the polyfill for older browsers. Default is `ES module shim`_. You can pass
-any URL to be included, or ``false`` to disable the polyfill.
+an importmap name to load the polyfill, or ``false`` to disable the polyfill loading.
 
 .. code-block:: yaml
 
     framework:
         asset_mapper:
             importmap_polyfill: false # disable the shim ...
-            # importmap_polyfill: 'https://...' # ... or pass some custom URL
+            # importmap_polyfill: 'my_import_map' # ... or pass an importmap name
+
+.. versionadded:: 6.4
+
+    Passing an importmap name in ``importmap_polyfill`` was
+    introduced in Symfony 6.4. Prior to this, you could pass ``false``
+    or a custom URL to load the polyfill.
 
 ``framework.asset_mapper.importmap_script_attributes``
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
