style: fix linting issues met ESLint

backend/src/entities/assignments/assignment.entity.ts

@@ -13,15 +13,11 @@ import { Language } from '../content/language.js';
 import { AssignmentRepository } from '../../data/assignments/assignment-repository.js';
 
 @Entity({
-    repository: () => {
-        return AssignmentRepository;
-    },
+    repository: () => AssignmentRepository,
 })
 export class Assignment {
     @ManyToOne({
-        entity: () => {
-            return Class;
-        },
+        entity: () => Class,
         primary: true,
     })
     within!: Class;
@@ -39,16 +35,12 @@ export class Assignment {
     learningPathHruid!: string;
 
     @Enum({
-        items: () => {
-            return Language;
-        },
+        items: () => Language,
     })
     learningPathLanguage!: Language;
 
     @OneToMany({
-        entity: () => {
-            return Group;
-        },
+        entity: () => Group,
         mappedBy: 'assignment',
     })
     groups!: Group[];

backend/src/entities/assignments/group.entity.ts

@@ -4,9 +4,7 @@ import { Student } from '../users/student.entity.js';
 import { GroupRepository } from '../../data/assignments/group-repository.js';
 
 @Entity({
-    repository: () => {
-        return GroupRepository;
-    },
+    repository: () => GroupRepository,
 })
 export class Group {
     @ManyToOne({

backend/src/entities/classes/class-join-request.entity.ts

@@ -4,9 +4,7 @@ import { Class } from './class.entity.js';
 import { ClassJoinRequestRepository } from '../../data/classes/class-join-request-repository.js';
 
 @Entity({
-    repository: () => {
-        return ClassJoinRequestRepository;
-    },
+    repository: () => ClassJoinRequestRepository,
 })
 export class ClassJoinRequest {
     @ManyToOne({

backend/src/entities/classes/class.entity.ts

@@ -11,9 +11,7 @@ import { Student } from '../users/student.entity.js';
 import { ClassRepository } from '../../data/classes/class-repository.js';
 
 @Entity({
-    repository: () => {
-        return ClassRepository;
-    },
+    repository: () => ClassRepository,
 })
 export class Class {
     @PrimaryKey()

backend/src/entities/content/attachment.entity.ts

@@ -3,15 +3,11 @@ import { LearningObject } from './learning-object.entity.js';
 import { AttachmentRepository } from '../../data/content/attachment-repository.js';
 
 @Entity({
-    repository: () => {
-        return AttachmentRepository;
-    },
+    repository: () => AttachmentRepository,
 })
 export class Attachment {
     @ManyToOne({
-        entity: () => {
-            return LearningObject;
-        },
+        entity: () => LearningObject,
         primary: true,
     })
     learningObject!: LearningObject;