chore: added a replaces option to the extensionInput wrapper

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

packages/frontend-app-api/src/extensions/Root.ts

@@ -28,7 +28,9 @@ export const Root = createExtension({
     app: createExtensionInput([coreExtensionData.reactElement], {
       singleton: true,
     }),
-    apis: createExtensionInput([ApiBlueprint.dataRefs.factory]),
+    apis: createExtensionInput([ApiBlueprint.dataRefs.factory], {
+      replaces: [{ id: 'app', input: 'apis' }],
+    }),
   },
   output: [],
   factory: () => [],

packages/frontend-plugin-api/src/wiring/createExtensionInput.ts

@@ -18,12 +18,13 @@ import { ExtensionDataRef } from './createExtensionDataRef';
 
 /** @public */
 export interface ExtensionInput<
-  TExtensionData extends ExtensionDataRef<unknown, string, { optional?: true }>,
+  UExtensionData extends ExtensionDataRef<unknown, string, { optional?: true }>,
   TConfig extends { singleton: boolean; optional: boolean },
 > {
   $$type: '@backstage/ExtensionInput';
-  extensionData: Array<TExtensionData>;
+  extensionData: Array<UExtensionData>;
   config: TConfig;
+  replaces?: Array<{ id: string; input: string }>;
 }
 
 /** @public */
@@ -32,7 +33,7 @@ export function createExtensionInput<
   TConfig extends { singleton?: boolean; optional?: boolean },
 >(
   extensionData: Array<UExtensionData>,
-  config?: TConfig,
+  config?: TConfig & { replaces?: Array<{ id: string; input: string }> },
 ): ExtensionInput<
   UExtensionData,
   {
@@ -71,6 +72,7 @@ export function createExtensionInput<
         ? true
         : false,
     },
+    replaces: config?.replaces,
   } as ExtensionInput<
     UExtensionData,
     {