frontend-plugin-api, frontend-app-api: API review cleanup

Remove @backstage/core-plugin-api leakage from the
@backstage/frontend-app-api public API surface. Rename PluginOptions
to CreateFrontendPluginOptions with a deprecated alias. Remove
ResolvedExtensionInputs from the main @backstage/frontend-plugin-api
entry point.

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>
Made-with: Cursor

packages/frontend-app-api/report.api.md

@@ -3,11 +3,10 @@
 > Do not edit this file. It is a report generated by [API Extractor](https://api-extractor.com/).
 
 ```ts
-import { ApiHolder } from '@backstage/core-plugin-api';
-import { ApiHolder as ApiHolder_2 } from '@backstage/frontend-plugin-api';
+import { ApiHolder } from '@backstage/frontend-plugin-api';
 import { AppNode } from '@backstage/frontend-plugin-api';
 import { AppTree } from '@backstage/frontend-plugin-api';
-import { ConfigApi } from '@backstage/core-plugin-api';
+import { ConfigApi } from '@backstage/frontend-plugin-api';
 import { ExtensionDataContainer } from '@backstage/frontend-plugin-api';
 import { ExtensionDataRef } from '@backstage/frontend-plugin-api';
 import { ExtensionDataValue } from '@backstage/frontend-plugin-api';
@@ -186,7 +185,7 @@ export type ExtensionFactoryMiddleware = (
   }) => ExtensionDataContainer<ExtensionDataRef>,
   context: {
     node: AppNode;
-    apis: ApiHolder_2;
+    apis: ApiHolder;
     config?: JsonObject;
   },
 ) => Iterable<ExtensionDataValue<any, any>>;

packages/frontend-app-api/src/tree/instantiateAppNodeTree.ts

@@ -19,8 +19,9 @@ import {
   ExtensionDataContainer,
   ExtensionDataRef,
   ExtensionInput,
-  ResolvedExtensionInputs,
 } from '@backstage/frontend-plugin-api';
+// eslint-disable-next-line @backstage/no-relative-monorepo-imports
+import { ResolvedExtensionInputs } from '../../../frontend-plugin-api/src/wiring/createExtension';
 import { ExtensionFactoryMiddleware } from '../wiring/types';
 import mapValues from 'lodash/mapValues';
 import { AppNode, AppNodeInstance } from '@backstage/frontend-plugin-api';

packages/frontend-app-api/src/wiring/createPluginInfoAttacher.ts

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import { ConfigApi } from '@backstage/core-plugin-api';
+import { ConfigApi } from '@backstage/frontend-plugin-api';
 import {
   FrontendFeature,
   FrontendPluginInfo,

packages/frontend-app-api/src/wiring/createSpecializedApp.test.tsx

@@ -28,12 +28,13 @@ import {
   createExtensionInput,
   useRouteRef,
   analyticsApiRef,
+  configApiRef,
   createExtensionDataRef,
+  featureFlagsApiRef,
 } from '@backstage/frontend-plugin-api';
 import { screen, render } from '@testing-library/react';
 import { createSpecializedApp } from './createSpecializedApp';
 import { mockApis, TestApiRegistry } from '@backstage/test-utils';
-import { configApiRef, featureFlagsApiRef } from '@backstage/core-plugin-api';
 import { MemoryRouter } from 'react-router-dom';
 import { ApiProvider, ConfigReader } from '@backstage/core-app-api';
 import { Fragment } from 'react';

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

@@ -16,30 +16,28 @@
 
 import { ConfigReader } from '@backstage/config';
 import {
+  AnyApiFactory,
   ApiBlueprint,
+  ApiHolder,
+  AppNode,
   AppTree,
   AppTreeApi,
   appTreeApiRef,
-  RouteRef,
-  ExternalRouteRef,
-  SubRouteRef,
   AnyRouteRefParams,
-  RouteFunc,
-  RouteResolutionApi,
-  createApiFactory,
-  routeResolutionApiRef,
-  AppNode,
-  FrontendFeature,
-} from '@backstage/frontend-plugin-api';
-import { ExtensionFactoryMiddleware } from './types';
-import {
-  AnyApiFactory,
-  ApiHolder,
   ConfigApi,
   configApiRef,
+  createApiFactory,
+  ExternalRouteRef,
   featureFlagsApiRef,
+  FrontendFeature,
   identityApiRef,
-} from '@backstage/core-plugin-api';
+  RouteFunc,
+  RouteRef,
+  RouteResolutionApi,
+  routeResolutionApiRef,
+  SubRouteRef,
+} from '@backstage/frontend-plugin-api';
+import { ExtensionFactoryMiddleware } from './types';
 import { ApiFactoryRegistry, ApiResolver } from '@backstage/core-app-api';
 import {
   createExtensionDataContainer,