fix issues

apps/api/src/domain/admin/AdminModule.ts

@@ -1,3 +1,4 @@
+import type { Provider } from '@nestjs/common';
 import { Module } from '@nestjs/common';
 import { InMemoryAdminPersistenceModule } from '../../persistence/inmemory/InMemoryAdminPersistenceModule';
 import { AdminService } from './AdminService';
@@ -7,6 +8,7 @@ import { DashboardStatsPresenter } from './presenters/DashboardStatsPresenter';
 import { AuthModule } from '../auth/AuthModule';
 import { ListUsersUseCase } from '@core/admin/application/use-cases/ListUsersUseCase';
 import { GetDashboardStatsUseCase } from './use-cases/GetDashboardStatsUseCase';
+import { InitializationLogger } from '../../shared/logging/InitializationLogger';
 import type { UseCaseOutputPort } from '@core/shared/application/UseCaseOutputPort';
 import type { ListUsersResult } from '@core/admin/application/use-cases/ListUsersUseCase';
 import type { DashboardStatsResult } from './use-cases/GetDashboardStatsUseCase';
@@ -16,38 +18,80 @@ export const ADMIN_USER_REPOSITORY_TOKEN = 'IAdminUserRepository';
 export const LIST_USERS_OUTPUT_PORT_TOKEN = 'ListUsersOutputPort';
 export const DASHBOARD_STATS_OUTPUT_PORT_TOKEN = 'DashboardStatsOutputPort';
 
+const initLogger = InitializationLogger.getInstance();
+
+const adminProviders: Provider[] = [
+  AdminService,
+  ListUsersPresenter,
+  DashboardStatsPresenter,
+  {
+    provide: LIST_USERS_OUTPUT_PORT_TOKEN,
+    useExisting: ListUsersPresenter,
+  },
+  {
+    provide: DASHBOARD_STATS_OUTPUT_PORT_TOKEN,
+    useExisting: DashboardStatsPresenter,
+  },
+  {
+    provide: ListUsersUseCase,
+    useFactory: (
+      repository: IAdminUserRepository,
+      output: UseCaseOutputPort<ListUsersResult>,
+    ) => new ListUsersUseCase(repository, output),
+    inject: [ADMIN_USER_REPOSITORY_TOKEN, LIST_USERS_OUTPUT_PORT_TOKEN],
+  },
+  {
+    provide: GetDashboardStatsUseCase,
+    useFactory: (
+      repository: IAdminUserRepository,
+      output: UseCaseOutputPort<DashboardStatsResult>,
+    ) => new GetDashboardStatsUseCase(repository, output),
+    inject: [ADMIN_USER_REPOSITORY_TOKEN, DASHBOARD_STATS_OUTPUT_PORT_TOKEN],
+  },
+];
+
+// Diagnostics: Nest will crash with "metatype is not a constructor" if any provider resolves
+// to a non-constructable value (e.g. undefined import, object, etc.).
+for (const provider of adminProviders) {
+  // Class providers are functions at runtime.
+  if (typeof provider === 'function') {
+    continue;
+  }
+
+  // Custom providers should be objects with a `provide` token.
+  if (!provider || typeof provider !== 'object' || !('provide' in provider)) {
+    initLogger.error(
+      `[AdminModule] Invalid provider entry (expected class or provider object): ${String(provider)}`,
+    );
+    continue;
+  }
+
+  const token = (provider as { provide: unknown }).provide;
+  const tokenLabel = typeof token === 'function' ? token.name : String(token);
+
+  if ('useClass' in provider) {
+    const useClass = (provider as { useClass?: unknown }).useClass;
+    if (typeof useClass !== 'function') {
+      initLogger.error(
+        `[AdminModule] Provider "${tokenLabel}" has non-constructable useClass: ${String(useClass)}`,
+      );
+    }
+  }
+
+  if ('useExisting' in provider) {
+    const useExisting = (provider as { useExisting?: unknown }).useExisting;
+    if (typeof useExisting !== 'function' && typeof useExisting !== 'string' && typeof useExisting !== 'symbol') {
+      initLogger.warn(
+        `[AdminModule] Provider "${tokenLabel}" has suspicious useExisting: ${String(useExisting)}`,
+      );
+    }
+  }
+}
+
 @Module({
   imports: [InMemoryAdminPersistenceModule, AuthModule],
   controllers: [AdminController],
-  providers: [
-    AdminService,
-    ListUsersPresenter,
-    DashboardStatsPresenter,
-    {
-      provide: LIST_USERS_OUTPUT_PORT_TOKEN,
-      useExisting: ListUsersPresenter,
-    },
-    {
-      provide: DASHBOARD_STATS_OUTPUT_PORT_TOKEN,
-      useExisting: DashboardStatsPresenter,
-    },
-    {
-      provide: ListUsersUseCase,
-      useFactory: (
-        repository: IAdminUserRepository,
-        output: UseCaseOutputPort<ListUsersResult>,
-      ) => new ListUsersUseCase(repository, output),
-      inject: [ADMIN_USER_REPOSITORY_TOKEN, LIST_USERS_OUTPUT_PORT_TOKEN],
-    },
-    {
-      provide: GetDashboardStatsUseCase,
-      useFactory: (
-        repository: IAdminUserRepository,
-        output: UseCaseOutputPort<DashboardStatsResult>,
-      ) => new GetDashboardStatsUseCase(repository, output),
-      inject: [ADMIN_USER_REPOSITORY_TOKEN, DASHBOARD_STATS_OUTPUT_PORT_TOKEN],
-    },
-  ],
+  providers: [...adminProviders],
   exports: [AdminService],
 })
-export class AdminModule {}
+export class AdminModule {}