diff --git a/libs/playback/data-access/tsconfig.spec.json b/libs/playback/data-access/tsconfig.spec.json
index 7f31bb031..71dd0db03 100644
--- a/libs/playback/data-access/tsconfig.spec.json
+++ b/libs/playback/data-access/tsconfig.spec.json
@@ -3,12 +3,12 @@
     "compilerOptions": {
         "emitDecoratorMetadata": false,
         "outDir": "../../../dist/out-tsc",
-        "module": "commonjs",
+        "module": "preserve",
         "target": "es2016",
         "types": ["jest", "node"],
-        "moduleResolution": "node10"
+        "moduleResolution": "bundler"
     },
-    "files": ["src/test-setup.ts"],
+    "files": ["src/test-setup.ts", "../../../global.d.ts"],
     "include": [
         "jest.config.ts",
         "src/**/*.test.ts",
diff --git a/libs/playlist/m3u/feature-player/src/lib/video-player/video-player-recent-history.spec.ts b/libs/playlist/m3u/feature-player/src/lib/video-player/video-player-recent-history.spec.ts
index 93643cc16..845dc0ce8 100644
--- a/libs/playlist/m3u/feature-player/src/lib/video-player/video-player-recent-history.spec.ts
+++ b/libs/playlist/m3u/feature-player/src/lib/video-player/video-player-recent-history.spec.ts
@@ -59,7 +59,7 @@ describe('VideoPlayerComponent — recently viewed history', () => {
     let component: VideoPlayerComponentInstance;
     let gate: PlaybackHistoryGate;
     const activePlaylist = signal<Partial<PlaylistMeta> | null>(null);
-    const harnessSelectSignal = storeMock.selectSignal.getMockImplementation();
+    const harnessSelectSignal = storeMock.selectSignal.getMockImplementation()!;
 
     beforeAll(async () => {
         ({ VideoPlayerComponent } = await import('./video-player.component'));
@@ -74,11 +74,11 @@ describe('VideoPlayerComponent — recently viewed history', () => {
         externalSession.set(null);
         storeMock.dispatch.mockClear();
         activePlaylist.set({ _id: 'playlist-1', recentlyViewed: [] });
-        storeMock.selectSignal.mockImplementation((selector: unknown) =>
+        // The harness has no playlist meta; the history write updates it.
+        storeMock.selectSignal.mockImplementation(((selector: unknown) =>
             selector === selectActivePlaylist
                 ? activePlaylist
-                : harnessSelectSignal?.(selector)
-        );
+                : harnessSelectSignal(selector)) as typeof harnessSelectSignal);
         playlistsServiceMock.addM3uRecentlyViewed.mockClear();
 
         await TestBed.configureTestingModule({