chore(lint): fix lint warnings and fail lint on warnings

eslint.config.js

@@ -13,8 +13,6 @@ module.exports = defineConfig([
     extends: [angular.configs.tsRecommended],
     processor: angular.processInlineTemplates,
     rules: {
-      // Ionic's base level; `recommended` makes it an error, which is meant for libraries.
-      '@typescript-eslint/explicit-module-boundary-types': 'warn',
       '@angular-eslint/directive-selector': [
         'error',
         {

package.json

@@ -14,7 +14,7 @@
     "test": "ng test",
     "lint": "npm run eslint && npm run prettier -- --check",
     "lint:fix": "npm run eslint -- --fix && npm run prettier -- --write",
-    "eslint": "ng lint",
+    "eslint": "ng lint --max-warnings 0",
     "prettier": "prettier \"**/*.{ts,html}\""
   },
   "private": true,

src/app/services/photo.service.ts

@@ -25,7 +25,7 @@ export class PhotoService {
   // Store a reference to all photo filepaths using Storage API:
   // https://capacitor.ionicframework.com/docs/apis/storage
   */
-  public async addNewToGallery() {
+  public async addNewToGallery(): Promise<void> {
     // Take a photo
     const capturedPhoto = await Camera.getPhoto({
       resultType: CameraResultType.Uri, // file-based data; provides best performance
@@ -104,7 +104,7 @@ export class PhotoService {
     });
   }
 
-  public async loadSaved() {
+  public async loadSaved(): Promise<void> {
     // Retrieve cached photo array data
     const { value: photoList } = await Preferences.get({ key: this.PHOTO_STORAGE });
     const photos = (photoList ? JSON.parse(photoList) : []) as UserPhoto[];
@@ -128,7 +128,7 @@ export class PhotoService {
   }
 
   // Delete picture by removing it from reference data and the filesystem
-  public async deletePhoto(photo: UserPhoto, position: number) {
+  public async deletePhoto(photo: UserPhoto, position: number): Promise<void> {
     // Remove this photo from the Photos signal
     this.photos.update((photos) => photos.filter((_, index) => index !== position));
 

src/app/tab2/tab2.page.ts

@@ -33,15 +33,15 @@ export class Tab2Page implements OnInit {
     addIcons({ camera, trash, close });
   }
 
-  async ngOnInit() {
+  async ngOnInit(): Promise<void> {
     await this.photoService.loadSaved();
   }
 
-  addPhotoToGallery() {
+  addPhotoToGallery(): void {
     this.photoService.addNewToGallery();
   }
 
-  public async showActionSheet(photo: UserPhoto, position: number) {
+  public async showActionSheet(photo: UserPhoto, position: number): Promise<void> {
     const actionSheet = await this.actionSheetController.create({
       header: 'Photos',
       buttons: [