working example

src/adapters/music/VinylCatalog.ts

@@ -14,26 +14,29 @@ export class VinylCatalog implements IMusicRepository {
     get(): Track[] {
         return this.vinylList;
     }
-    getById(id: number): Track {
-        return this.vinylList.filter(track => track.Id == id).pop();
+    getById(id: number): Track | null {
+        return this.vinylList.filter(track => track.Id == id).pop() as Track;
     }
     add(track: Track): number {
         return this.vinylList.push(track);
     }
     edit(id: number, track: Track): Track {
         var existingTrack = this.getById(id);
-        existingTrack.Artist = track.Artist;
-        existingTrack.Title = track.Title;
-        existingTrack.Duration = track.Duration;
-        return existingTrack;
-
+        if (existingTrack) {
+            existingTrack.Artist = track.Artist;
+            existingTrack.Title = track.Title;
+            existingTrack.Duration = track.Duration;
+            return existingTrack;
+        }
+        throw new Error("Track not found");
     }
-    delete(id: number): Track {
+    delete(id: number): Track | null {
         var track = this.getById(id);
         if (track) {
             var targetIndex = this.vinylList.indexOf(track);
             if (targetIndex < -1) return null;
             return this.vinylList.splice(targetIndex, 1)[0];
         }
+        return null;
     }
 }

src/domain/factories/IPortProvider.ts

@@ -1,4 +0,0 @@
-
-export interface IPortProvider {
-
-}

src/domain/ports/IMusicRepository.ts

@@ -3,8 +3,8 @@ import { Track } from "../models/Track";
 
 export interface IMusicRepository {
      get() : Track[];
-     getById(id: number) : Track;
+     getById(id: number) : Track | null;
      add(track: Track) : number;
      edit(id: number, track: Track) : Track;
-     delete(id: number) : Track;
+     delete(id: number) : Track | null;
 }

src/domain/services/MusicCatalogService.ts

@@ -12,7 +12,7 @@ export class MusicCatalogService {
     get(): Track[] {
         return this.repository.get();
     }
-    getById(id: number): Track {
+    getById(id: number): Track | null {
        return this.repository.getById(id);
     }
     add(track: Track): number {
@@ -21,7 +21,7 @@ export class MusicCatalogService {
     edit(id: number, track: Track): Track {
        return this.repository.edit(id, track);
     }
-    delete(id: number): Track {
+    delete(id: number): Track | null {
       return this.repository.delete(id);
     }
 }

src/view/MusicComponent.spec.ts

@@ -3,7 +3,9 @@ import { MusicComponent } from "./MusicComponent";
 describe("MusicComponent", () => {
 
     it('should create a new MusicComponent', (done) => {
+        console.log('Creating MusicComponent');
         let musicComponent = new MusicComponent();
+        console.log('MusicComponent created!');
         done();
     });
 

src/view/MusicComponent.ts

@@ -1,23 +1,37 @@
 
 import { MusicCatalogService } from "../domain/services/MusicCatalogService"
 import { IMusicRepository } from "../domain/ports/IMusicRepository";
-
-import { VinylCatalog } from "../adapters/music/VinylCatalog"
+import { Track } from "../domain/models/Track";
+import { VinylCatalog } from "../adapters/music/VinylCatalog";
 
 export class MusicComponent {
     constructor() {
 
-        let container = {
-            IMusicRepository: () => new VinylCatalog()
+        let container : any = { };
+
+        let register = (name : string, fn : Function) => {
+            container[name] = fn;
         };
 
         let inject = (name : string) : any => {
             if (container[name]) {
-                return container[name];
+                return container[name]();
             }
             throw new Error(`Failed to resolve ${name}`)
         };
-        let musicCatalogService = new MusicCatalogService(inject("IMusicRepository") as IMusicRepository);
 
+        console.log('registering IMusicRepository');
+        register('IMusicRepository', () => new VinylCatalog());
+
+        let musicRepository = inject("IMusicRepository") as IMusicRepository;
+        console.log('IMusicRepository is', musicRepository);
+
+        let musicCatalogService = new MusicCatalogService(musicRepository);
+
+        let track = new Track(8, "Niels 1st", "Niels Kooiman", 45);
+        musicCatalogService.add(track);
+
+        let tracks = musicCatalogService.get();
+        console.log(tracks);
     }
 }