by tstoeckler: Revert the decision to switch from YAML to JSON

libraries.services.yml

@@ -7,8 +7,7 @@ services:
       - '@libraries.php_file_loader'
   libraries.registry:
     class: Drupal\libraries\ExternalLibrary\Registry\ExternalLibraryRegistry
-    # @todo Reconsider the decision to go with JSON instead of YAML.
-    arguments: ['@serialization.json', '@plugin.manager.libraries.locator']
+    arguments: ['@serialization.yaml', '@plugin.manager.libraries.locator']
   plugin.manager.libraries.locator:
     class: Drupal\libraries\ExternalLibrary\Local\LocatorManager
     parent: default_plugin_manager

tests/library_definitions/test_asset_library.json

-{
-  "id": "test_asset_library",
-  "class": "Drupal\\libraries\\ExternalLibrary\\Asset\\AssetLibrary",
-  "remote_url": "http://example.com",
-  "css": {
-    "base": {
-      "example.css": []
-    }
-  },
-  "js": {
-    "example.js": []
-  }
-}

tests/library_definitions/test_asset_library.yml

+id: test_asset_library
+class: Drupal\libraries\ExternalLibrary\Asset\AssetLibrary
+remote_url: http://example.com
+css:
+  base:
+    example.css: {  }
+js:
+  example.js: {  }

tests/library_definitions/test_php_file_library.json

-{
-  "id": "test_php_file_library",
-  "class": "Drupal\\libraries\\ExternalLibrary\\PhpFile\\PhpFileLibrary",
-  "files": [
-    "test_php_file_library.php"
-  ]
-}

tests/library_definitions/test_php_file_library.yml

+id: test_php_file_library
+class: Drupal\libraries\ExternalLibrary\PhpFile\PhpFileLibrary
+files: [test_php_file_library.php]