chore: wip

Signed-off-by: blam <ben@blam.sh>

Signed-off-by: blam <ben@blam.sh>

packages/frontend-app-api/src/wiring/createApp.tsx

@@ -171,6 +171,7 @@ export interface CreateAppFeatureLoader {
 
 /** @public */
 export function createApp(options?: {
+  /** @deprecated - TODO */
   icons?: { [key in string]: IconComponent };
   features?: (FrontendFeature | CreateAppFeatureLoader)[];
   configLoader?: () => Promise<{ config: ConfigApi }>;

packages/frontend-plugin-api/src/extensions/IconBundleBlueprint.ts

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2024 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { IconComponent } from '../icons';
+import { createExtensionBlueprint, createExtensionDataRef } from '../wiring';
+
+const iconsDataRef =
+  createExtensionDataRef<{ [key in string]: IconComponent }>('core.icons');
+
+/** @public */
+export const IconBundleBlueprint = createExtensionBlueprint({
+  kind: 'icon-bundle',
+  namespace: 'app',
+  attachTo: { id: 'app', input: 'icons' },
+  output: {
+    icons: iconsDataRef,
+  },
+  factory: (_, params: { icons: { [key in string]: IconComponent } }) => params,
+});