refactor: remove unnecessary type assertions in service files and improve context initialization in frontend

Author: tomast1337

apps/backend/src/auth/auth.service.ts

@@ -215,7 +215,7 @@ export class AuthService {
     }
 
     public async getUserFromToken(token: string): Promise<UserDocument | null> {
-        const decoded = this.jwtService.decode(token) as TokenPayload;
+        const decoded = this.jwtService.decode(token);
 
         if (!decoded) {
             return null;

apps/backend/src/song/song.service.spec.ts

@@ -455,7 +455,7 @@ describe('SongService', () => {
                 uploader: 'different-user-id'
             } as any;
 
-            jest.spyOn(songModel, 'findOne').mockReturnValue(songEntity as any);
+            jest.spyOn(songModel, 'findOne').mockReturnValue(songEntity);
 
             await expect(service.patchSong(publicId, body, user)).rejects.toThrow(
                 HttpException
@@ -536,7 +536,7 @@ describe('SongService', () => {
                 customInstruments: []
             } as any;
 
-            jest.spyOn(songModel, 'findOne').mockReturnValue(songEntity as any);
+            jest.spyOn(songModel, 'findOne').mockReturnValue(songEntity);
 
             await expect(service.patchSong(publicId, body, user)).rejects.toThrow(
                 HttpException
@@ -638,7 +638,7 @@ describe('SongService', () => {
                 ...songDocument
             };
 
-            jest.spyOn(songModel, 'findOne').mockReturnValue(mockFindOne as any);
+            jest.spyOn(songModel, 'findOne').mockReturnValue(mockFindOne);
 
             const result = await service.getSong(publicId, user);
 
@@ -655,7 +655,7 @@ describe('SongService', () => {
 
             const mockFindOne = null;
 
-            jest.spyOn(songModel, 'findOne').mockReturnValue(mockFindOne as any);
+            jest.spyOn(songModel, 'findOne').mockReturnValue(mockFindOne);
 
             await expect(service.getSong(publicId, user)).rejects.toThrow(
                 HttpException

apps/backend/src/user/user.service.ts

@@ -30,7 +30,7 @@ export class UserService {
         try {
             return (await this.userModel.findByIdAndUpdate(user._id, user, {
                 new: true // return the updated document
-            })) as UserDocument;
+            }));
         } catch (error) {
             if (error instanceof Error) {
                 throw error;

apps/frontend/src/modules/browse/components/client/context/HomePage.context.tsx

@@ -9,7 +9,7 @@ import { RecentSongsProvider } from './RecentSongs.context';
 type HomePageContextType = null;
 
 const HomePageContext = createContext<HomePageContextType>(
-  null as HomePageContextType
+  null
 );
 
 export function HomePageProvider({

apps/frontend/src/modules/my-songs/components/client/MySongsTable.tsx

@@ -49,7 +49,7 @@ const SongRows = ({
 
   const content = !page
     ? Array(pageSize).fill(null)
-    : (page.content as SongPreviewDtoType[]);
+    : (page.content);
 
   return (
     <>