refactor(@angular/ssr): remove circular dependency between app.ts and manifest.ts

Updated `EntryPointExports` interface to avoid a circular dependency between `app.ts` and `manifest.ts`.

Author: alan-agius4

goldens/circular-deps/packages.json

@@ -23,10 +23,5 @@
   [
     "packages/angular/cli/src/analytics/analytics.ts",
     "packages/angular/cli/src/command-builder/command-module.ts"
-  ],
-  [
-    "packages/angular/ssr/src/app.ts",
-    "packages/angular/ssr/src/assets.ts",
-    "packages/angular/ssr/src/manifest.ts"
   ]
 ]

packages/angular/ssr/src/app-engine.ts

@@ -6,6 +6,7 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
+import type { AngularServerApp } from './app';
 import { Hooks } from './hooks';
 import { getPotentialLocaleIdFromUrl } from './i18n';
 import { EntryPointExports, getAngularAppEngineManifest } from './manifest';
@@ -89,7 +90,10 @@ export class AngularAppEngine implements AngularServerAppManager {
     }
 
     const { ɵgetOrCreateAngularServerApp: getOrCreateAngularServerApp } = await entryPoint();
-    const serverApp = getOrCreateAngularServerApp();
+    // Note: Using `instanceof` is not feasible here because `AngularServerApp` will
+    // be located in separate bundles, making `instanceof` checks unreliable.
+    // eslint-disable-next-line @typescript-eslint/no-unnecessary-type-assertion
+    const serverApp = getOrCreateAngularServerApp() as AngularServerApp;
     serverApp.hooks = this.hooks;
 
     return serverApp.render(request, requestContext);

packages/angular/ssr/src/manifest.ts

@@ -6,7 +6,6 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
-import type { destroyAngularServerApp, getOrCreateAngularServerApp } from './app';
 import type { SerializableRouteTreeNode } from './routes/route-tree';
 import { AngularBootstrap } from './utils/ng';
 
@@ -16,13 +15,15 @@ import { AngularBootstrap } from './utils/ng';
 export interface EntryPointExports {
   /**
    * A reference to the function that creates an Angular server application instance.
+   *
+   * @note The return type is `unknown` to prevent circular dependency issues.
    */
-  ɵgetOrCreateAngularServerApp: typeof getOrCreateAngularServerApp;
+  ɵgetOrCreateAngularServerApp: () => unknown;
 
   /**
    * A reference to the function that destroys the `AngularServerApp` instance.
    */
-  ɵdestroyAngularServerApp: typeof destroyAngularServerApp;
+  ɵdestroyAngularServerApp: () => void;
 }
 
 /**