diff --git a/.eslintrc.json b/.eslintrc.json
index be7ad60..624783e 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -54,6 +54,21 @@
         "plugin:@angular-eslint/template/recommended"
       ],
       "rules": {}
+    },
+    {
+      "files": [
+        "*.spec.ts"
+      ],
+      "rules": {
+        "@typescript-eslint/await-thenable": "off",
+        "@typescript-eslint/no-explicit-any": "off",
+        "@typescript-eslint/no-floating-promises": "off",
+        "@typescript-eslint/no-unsafe-argument": "off",
+        "@typescript-eslint/no-unsafe-assignment": "off",
+        "@typescript-eslint/no-unsafe-call": "off",
+        "@typescript-eslint/no-unsafe-member-access": "off",
+        "@typescript-eslint/no-unsafe-return": "off"
+      }
     }
   ]
 }
diff --git a/src/app/modules/guest/guest-show-data.service.spec.ts b/src/app/modules/guest/guest-show-data.service.spec.ts
index 6db7021..ac857e5 100644
--- a/src/app/modules/guest/guest-show-data.service.spec.ts
+++ b/src/app/modules/guest/guest-show-data.service.spec.ts
@@ -12,7 +12,7 @@ describe('GuestShowDataService', () => {
   let colSpy: jasmine.Spy;
   let dbServiceSpy: jasmine.SpyObj<DbService>;
 
-  beforeEach(() => {
+  beforeEach(async () => {
     docUpdateSpy = jasmine.createSpy('update').and.resolveTo();
     docDeleteSpy = jasmine.createSpy('delete').and.resolveTo();
     docSpy = jasmine.createSpy('doc').and.returnValue({
@@ -27,7 +27,7 @@ describe('GuestShowDataService', () => {
     dbServiceSpy.doc.and.callFake(docSpy);
     dbServiceSpy.col.and.callFake(colSpy);
 
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [{provide: DbService, useValue: dbServiceSpy}],
     });
 
diff --git a/src/app/modules/guest/guest-show.service.spec.ts b/src/app/modules/guest/guest-show.service.spec.ts
index 69b2e02..f16f76a 100644
--- a/src/app/modules/guest/guest-show.service.spec.ts
+++ b/src/app/modules/guest/guest-show.service.spec.ts
@@ -2,20 +2,22 @@ import {TestBed} from '@angular/core/testing';
 import {GuestShowDataService} from './guest-show-data.service';
 import {GuestShowService} from './guest-show.service';
 import {ShowService} from '../shows/services/show.service';
+import {Show} from '../shows/services/show';
+import {Song} from '../songs/services/song';
 
 describe('GuestShowService', () => {
   let service: GuestShowService;
   let guestShowDataServiceSpy: jasmine.SpyObj<GuestShowDataService>;
   let showServiceSpy: jasmine.SpyObj<ShowService>;
 
-  beforeEach(() => {
+  beforeEach(async () => {
     guestShowDataServiceSpy = jasmine.createSpyObj<GuestShowDataService>('GuestShowDataService', ['add', 'update$']);
     showServiceSpy = jasmine.createSpyObj<ShowService>('ShowService', ['update$']);
     guestShowDataServiceSpy.add.and.resolveTo('share-1');
     guestShowDataServiceSpy.update$.and.resolveTo();
     showServiceSpy.update$.and.resolveTo();
 
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [
         {provide: GuestShowDataService, useValue: guestShowDataServiceSpy},
         {provide: ShowService, useValue: showServiceSpy},
@@ -30,8 +32,8 @@ describe('GuestShowService', () => {
   });
 
   it('should create a new guest share, persist the generated shareId on the show and return the share url', async () => {
-    const show = {id: 'show-1', showType: 'service-worship', date: new Date(), shareId: ''} as any;
-    const songs = [{id: 'song-1'}] as any;
+    const show = {id: 'show-1', showType: 'service-worship', date: new Date(), shareId: ''} as unknown as Show;
+    const songs = [{id: 'song-1'}] as unknown as Song[];
     const expectedUrl = window.location.protocol + '//' + window.location.host + '/guest/share-1';
 
     await expectAsync(service.share(show, songs)).toBeResolvedTo(expectedUrl);
@@ -45,8 +47,8 @@ describe('GuestShowService', () => {
   });
 
   it('should update an existing share and reuse its id in the returned url', async () => {
-    const show = {id: 'show-1', showType: 'service-worship', date: new Date(), shareId: 'share-9'} as any;
-    const songs = [{id: 'song-1'}] as any;
+    const show = {id: 'show-1', showType: 'service-worship', date: new Date(), shareId: 'share-9'} as unknown as Show;
+    const songs = [{id: 'song-1'}] as unknown as Song[];
     const expectedUrl = window.location.protocol + '//' + window.location.host + '/guest/share-9';
 
     await expectAsync(service.share(show, songs)).toBeResolvedTo(expectedUrl);
diff --git a/src/app/modules/shows/list/list.component.ts b/src/app/modules/shows/list/list.component.ts
index dcdcb95..67d2ac5 100644
--- a/src/app/modules/shows/list/list.component.ts
+++ b/src/app/modules/shows/list/list.component.ts
@@ -3,7 +3,8 @@ import {combineLatest} from 'rxjs';
 import {Show} from '../services/show';
 import {fade} from '../../../animations';
 import {ShowService} from '../services/show.service';
-import {FilterValues} from './filter/filter-values'import {RouterLink} from '@angular/router';
+import {FilterValues} from './filter/filter-values';
+import {RouterLink} from '@angular/router';
 import {map, switchMap} from 'rxjs/operators';
 import {FilterStoreService} from '../../../services/filter-store.service';
 import {RoleDirective} from '../../../services/user/role.directive';
@@ -49,10 +50,6 @@ export class ListComponent {
 
   public trackBy = (index: number, show: unknown) => (show as Show).id;
 
-  private matchesFilter(show: Show, filter: FilterValues): boolean {
-    return this.matchesTimeFilter(show, filter.time || 1) && (!filter.owner || show.owner === filter.owner) && (!filter.showType || show.showType === filter.showType);
-  }
-
   private matchesPrivateFilter(show: Show, filter: FilterValues): boolean {
     return this.matchesTimeFilter(show, filter.time || 1) && (!filter.showType || show.showType === filter.showType);
   }
diff --git a/src/app/modules/shows/services/docx.service.spec.ts b/src/app/modules/shows/services/docx.service.spec.ts
index b918668..5eb09f4 100644
--- a/src/app/modules/shows/services/docx.service.spec.ts
+++ b/src/app/modules/shows/services/docx.service.spec.ts
@@ -4,9 +4,14 @@ import {DocxService} from './docx.service';
 
 describe('DocxService', () => {
   let service: DocxService;
+  type DocxServiceInternals = DocxService & {
+    prepareData: (showId: string) => Promise<unknown>;
+    prepareNewDocument: (data: unknown, options?: unknown) => unknown;
+    saveAs: (blob: Blob, name: string) => void;
+  };
 
-  beforeEach(() => {
-    void TestBed.configureTestingModule({});
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({});
     service = TestBed.inject(DocxService);
   });
 
@@ -15,8 +20,9 @@ describe('DocxService', () => {
   });
 
   it('should not try to save a document when the required data cannot be prepared', async () => {
-    const prepareDataSpy = spyOn<any>(service, 'prepareData').and.resolveTo(null);
-    const saveAsSpy = spyOn<any>(service, 'saveAs');
+    const serviceInternals = service as DocxServiceInternals;
+    const prepareDataSpy = spyOn(serviceInternals, 'prepareData').and.resolveTo(null);
+    const saveAsSpy = spyOn(serviceInternals, 'saveAs');
 
     await service.create('show-1');
 
@@ -26,7 +32,8 @@ describe('DocxService', () => {
 
   it('should build and save a docx file when all data is available', async () => {
     const blob = new Blob(['docx']);
-    const prepareDataSpy = spyOn<any>(service, 'prepareData').and.resolveTo({
+    const serviceInternals = service as DocxServiceInternals;
+    const prepareDataSpy = spyOn(serviceInternals, 'prepareData').and.resolveTo({
       show: {
         showType: 'service-worship',
         date: {toDate: () => new Date('2026-03-10T00:00:00Z')},
@@ -35,8 +42,8 @@ describe('DocxService', () => {
       user: {name: 'Benjamin'},
       config: {ccliLicenseId: '12345'},
     });
-    const prepareNewDocumentSpy = spyOn<any>(service, 'prepareNewDocument').and.returnValue({doc: true});
-    const saveAsSpy = spyOn<any>(service, 'saveAs');
+    const prepareNewDocumentSpy = spyOn(serviceInternals, 'prepareNewDocument').and.returnValue({doc: true});
+    const saveAsSpy = spyOn(serviceInternals, 'saveAs');
     spyOn(Packer, 'toBlob').and.resolveTo(blob);
 
     await service.create('show-1', {copyright: true});
diff --git a/src/app/modules/shows/services/show-data.service.spec.ts b/src/app/modules/shows/services/show-data.service.spec.ts
index dd72a5a..ab17b2d 100644
--- a/src/app/modules/shows/services/show-data.service.spec.ts
+++ b/src/app/modules/shows/services/show-data.service.spec.ts
@@ -1,6 +1,6 @@
 import {TestBed} from '@angular/core/testing';
 import {firstValueFrom, of, Subject} from 'rxjs';
-import {skip, take} from 'rxjs/operators';
+import {take} from 'rxjs/operators';
 import {DbService} from '../../../services/db.service';
 import {ShowDataService} from './show-data.service';
 
@@ -13,7 +13,7 @@ describe('ShowDataService', () => {
   let colSpy: jasmine.Spy;
   let dbServiceSpy: jasmine.SpyObj<DbService>;
 
-  beforeEach(() => {
+  beforeEach(async () => {
     shows$ = new Subject<Array<{id: string; date: {toMillis: () => number}; archived?: boolean}>>();
     docUpdateSpy = jasmine.createSpy('update').and.resolveTo();
     docSpy = jasmine.createSpy('doc').and.returnValue({update: docUpdateSpy});
@@ -25,7 +25,7 @@ describe('ShowDataService', () => {
     dbServiceSpy.doc.and.callFake(docSpy);
     dbServiceSpy.col.and.callFake(colSpy);
 
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [{provide: DbService, useValue: dbServiceSpy}],
     });
 
@@ -76,11 +76,7 @@ describe('ShowDataService', () => {
   });
 
   it('should request only published recent shows and filter archived entries', async () => {
-    const publicShows$ = of([
-      {id: 'show-1', archived: false},
-      {id: 'show-2', archived: true},
-      {id: 'show-3'},
-    ]);
+    const publicShows$ = of([{id: 'show-1', archived: false}, {id: 'show-2', archived: true}, {id: 'show-3'}]);
     dbServiceSpy.col$.and.returnValue(publicShows$ as never);
 
     const result = await firstValueFrom(service.listPublicSince$(3));
diff --git a/src/app/modules/shows/services/show-song-data.service.spec.ts b/src/app/modules/shows/services/show-song-data.service.spec.ts
index d69dfdd..7a03e8d 100644
--- a/src/app/modules/shows/services/show-song-data.service.spec.ts
+++ b/src/app/modules/shows/services/show-song-data.service.spec.ts
@@ -12,7 +12,7 @@ describe('ShowSongDataService', () => {
   let colSpy: jasmine.Spy;
   let dbServiceSpy: jasmine.SpyObj<DbService>;
 
-  beforeEach(() => {
+  beforeEach(async () => {
     docUpdateSpy = jasmine.createSpy('update').and.resolveTo();
     docDeleteSpy = jasmine.createSpy('delete').and.resolveTo();
     docSpy = jasmine.createSpy('doc').and.returnValue({
@@ -27,7 +27,7 @@ describe('ShowSongDataService', () => {
     dbServiceSpy.doc.and.callFake(docSpy);
     dbServiceSpy.col.and.callFake(colSpy);
 
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [{provide: DbService, useValue: dbServiceSpy}],
     });
 
diff --git a/src/app/modules/shows/services/show-song.service.spec.ts b/src/app/modules/shows/services/show-song.service.spec.ts
index ccdc34e..9218194 100644
--- a/src/app/modules/shows/services/show-song.service.spec.ts
+++ b/src/app/modules/shows/services/show-song.service.spec.ts
@@ -5,6 +5,10 @@ import {UserService} from '../../../services/user/user.service';
 import {ShowService} from './show.service';
 import {ShowSongDataService} from './show-song-data.service';
 import {ShowSongService} from './show-song.service';
+import {ShowSong} from './show-song';
+import {Song} from '../../songs/services/song';
+import {Show} from './show';
+import {User} from '../../../services/user/user';
 
 describe('ShowSongService', () => {
   let service: ShowSongService;
@@ -12,13 +16,13 @@ describe('ShowSongService', () => {
   let songDataServiceSpy: jasmine.SpyObj<SongDataService>;
   let userServiceSpy: jasmine.SpyObj<UserService>;
   let showServiceSpy: jasmine.SpyObj<ShowService>;
-  let user$: BehaviorSubject<any>;
-  const song = {id: 'song-1', key: 'G', title: 'Amazing Grace'} as any;
-  const showSong = {id: 'show-song-1', songId: 'song-1'} as any;
-  const show = {id: 'show-1', order: ['show-song-1', 'show-song-2']} as any;
+  let user$: BehaviorSubject<User | null>;
+  const song = {id: 'song-1', key: 'G', title: 'Amazing Grace'} as unknown as Song;
+  const showSong = {id: 'show-song-1', songId: 'song-1'} as unknown as ShowSong;
+  const show = {id: 'show-1', order: ['show-song-1', 'show-song-2']} as unknown as Show;
 
-  beforeEach(() => {
-    user$ = new BehaviorSubject<any>({id: 'user-1', name: 'Benjamin', role: 'editor', chordMode: 'letters', songUsage: {}});
+  beforeEach(async () => {
+    user$ = new BehaviorSubject<User | null>({id: 'user-1', name: 'Benjamin', role: 'editor', chordMode: 'letters', songUsage: {}});
     showSongDataServiceSpy = jasmine.createSpyObj<ShowSongDataService>('ShowSongDataService', ['add', 'read$', 'list$', 'delete', 'update$']);
     songDataServiceSpy = jasmine.createSpyObj<SongDataService>('SongDataService', ['read$']);
     userServiceSpy = jasmine.createSpyObj<UserService>('UserService', ['incSongCount', 'decSongCount'], {
@@ -37,7 +41,7 @@ describe('ShowSongService', () => {
     showServiceSpy.read$.and.returnValue(of(show));
     showServiceSpy.update$.and.resolveTo();
 
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [
         {provide: ShowSongDataService, useValue: showSongDataServiceSpy},
         {provide: SongDataService, useValue: songDataServiceSpy},
diff --git a/src/app/modules/shows/services/show.service.spec.ts b/src/app/modules/shows/services/show.service.spec.ts
index 7532e82..bfb2cc0 100644
--- a/src/app/modules/shows/services/show.service.spec.ts
+++ b/src/app/modules/shows/services/show.service.spec.ts
@@ -14,7 +14,7 @@ describe('ShowService', () => {
     {id: 'show-3', owner: 'user-1', published: true, archived: true},
   ] as never;
 
-  beforeEach(() => {
+  beforeEach(async () => {
     user$ = new BehaviorSubject<unknown>({id: 'user-1'});
     showDataServiceSpy = jasmine.createSpyObj<ShowDataService>('ShowDataService', ['read$', 'listPublicSince$', 'update', 'add'], {
       list$: of(shows),
@@ -24,7 +24,7 @@ describe('ShowService', () => {
     showDataServiceSpy.update.and.resolveTo();
     showDataServiceSpy.add.and.resolveTo('new-show-id');
 
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [
         {provide: ShowDataService, useValue: showDataServiceSpy},
         {provide: UserService, useValue: {user$: user$.asObservable()}},
diff --git a/src/app/modules/songs/services/file-data.service.spec.ts b/src/app/modules/songs/services/file-data.service.spec.ts
index f075969..3293d79 100644
--- a/src/app/modules/songs/services/file-data.service.spec.ts
+++ b/src/app/modules/songs/services/file-data.service.spec.ts
@@ -12,7 +12,7 @@ describe('FileDataService', () => {
   let fileDeleteSpy: jasmine.Spy;
   let dbServiceSpy: jasmine.SpyObj<DbService>;
 
-  beforeEach(() => {
+  beforeEach(async () => {
     filesCollectionValueChangesSpy = jasmine.createSpy('valueChanges').and.returnValue(of([{id: 'file-1', name: 'plan.pdf'}]));
     filesCollectionAddSpy = jasmine.createSpy('add').and.resolveTo({id: 'file-2'});
     songDocCollectionSpy = jasmine.createSpy('collection').and.returnValue({
@@ -30,7 +30,7 @@ describe('FileDataService', () => {
     dbServiceSpy = jasmine.createSpyObj<DbService>('DbService', ['doc']);
     dbServiceSpy.doc.and.callFake(songDocSpy);
 
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [{provide: DbService, useValue: dbServiceSpy}],
     });
 
diff --git a/src/app/modules/songs/services/file.service.spec.ts b/src/app/modules/songs/services/file.service.spec.ts
index a66a8c6..079117b 100644
--- a/src/app/modules/songs/services/file.service.spec.ts
+++ b/src/app/modules/songs/services/file.service.spec.ts
@@ -6,12 +6,16 @@ import {FileService} from './file.service';
 describe('FileService', () => {
   let service: FileService;
   let fileDataServiceSpy: jasmine.SpyObj<FileDataService>;
+  type FileServiceInternals = FileService & {
+    resolveDownloadUrl: (path: string) => Promise<string>;
+    deleteFromStorage: (path: string) => Promise<void>;
+  };
 
-  beforeEach(() => {
+  beforeEach(async () => {
     fileDataServiceSpy = jasmine.createSpyObj<FileDataService>('FileDataService', ['delete']);
     fileDataServiceSpy.delete.and.resolveTo();
 
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [
         {provide: Storage, useValue: {app: 'test-storage'}},
         {provide: FileDataService, useValue: fileDataServiceSpy},
@@ -26,7 +30,7 @@ describe('FileService', () => {
   });
 
   it('should resolve download urls via AngularFire storage helpers', async () => {
-    const resolveSpy = spyOn<any>(service, 'resolveDownloadUrl').and.resolveTo('https://cdn.example/file.pdf');
+    const resolveSpy = spyOn(service as FileServiceInternals, 'resolveDownloadUrl').and.resolveTo('https://cdn.example/file.pdf');
 
     await expectAsync(service.getDownloadUrl('songs/song-1/file.pdf').toPromise()).toBeResolvedTo('https://cdn.example/file.pdf');
 
@@ -34,10 +38,9 @@ describe('FileService', () => {
   });
 
   it('should delete the file from storage and metadata from firestore', async () => {
-    const deleteFromStorageSpy = spyOn<any>(service, 'deleteFromStorage').and.resolveTo();
+    const deleteFromStorageSpy = spyOn(service as FileServiceInternals, 'deleteFromStorage').and.resolveTo();
 
-    service.delete('songs/song-1/file.pdf', 'song-1', 'file-1');
-    await Promise.resolve();
+    await service.delete('songs/song-1/file.pdf', 'song-1', 'file-1');
 
     expect(deleteFromStorageSpy).toHaveBeenCalledWith('songs/song-1/file.pdf');
     expect(fileDataServiceSpy.delete).toHaveBeenCalledWith('song-1', 'file-1');
diff --git a/src/app/modules/songs/services/song-data.service.spec.ts b/src/app/modules/songs/services/song-data.service.spec.ts
index 2b543b6..70c0b38 100644
--- a/src/app/modules/songs/services/song-data.service.spec.ts
+++ b/src/app/modules/songs/services/song-data.service.spec.ts
@@ -1,6 +1,6 @@
 import {TestBed} from '@angular/core/testing';
 import {firstValueFrom, Subject} from 'rxjs';
-import {skip, take, toArray} from 'rxjs/operators';
+import {take, toArray} from 'rxjs/operators';
 import {DbService} from '../../../services/db.service';
 import {SongDataService} from './song-data.service';
 
@@ -14,7 +14,7 @@ describe('SongDataService', () => {
   let colSpy: jasmine.Spy;
   let dbServiceSpy: jasmine.SpyObj<DbService>;
 
-  beforeEach(() => {
+  beforeEach(async () => {
     songs$ = new Subject<Array<{id: string; title: string}>>();
     docUpdateSpy = jasmine.createSpy('update').and.resolveTo();
     docDeleteSpy = jasmine.createSpy('delete').and.resolveTo();
@@ -32,7 +32,7 @@ describe('SongDataService', () => {
     dbServiceSpy.doc.and.callFake(docSpy);
     dbServiceSpy.col.and.callFake(colSpy);
 
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [{provide: DbService, useValue: dbServiceSpy}],
     });
 
diff --git a/src/app/modules/songs/services/song-list.resolver.spec.ts b/src/app/modules/songs/services/song-list.resolver.spec.ts
index cbd54b3..ecffb6c 100644
--- a/src/app/modules/songs/services/song-list.resolver.spec.ts
+++ b/src/app/modules/songs/services/song-list.resolver.spec.ts
@@ -7,11 +7,11 @@ describe('SongListResolver', () => {
   let resolver: SongListResolver;
   let songServiceSpy: jasmine.SpyObj<SongService>;
 
-  beforeEach(() => {
+  beforeEach(async () => {
     songServiceSpy = jasmine.createSpyObj<SongService>('SongService', ['list$']);
     songServiceSpy.list$.and.returnValue(of([{id: 'song-1', title: 'Amazing Grace'}] as never));
 
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [{provide: SongService, useValue: songServiceSpy}],
     });
 
diff --git a/src/app/modules/songs/services/song.service.spec.ts b/src/app/modules/songs/services/song.service.spec.ts
index 8e3828f..27f3352 100644
--- a/src/app/modules/songs/services/song.service.spec.ts
+++ b/src/app/modules/songs/services/song.service.spec.ts
@@ -15,7 +15,7 @@ describe('SongService', () => {
     edits: [],
   } as never;
 
-  beforeEach(() => {
+  beforeEach(async () => {
     songDataServiceSpy = jasmine.createSpyObj<SongDataService>('SongDataService', ['read$', 'update$', 'add', 'delete'], {
       list$: of([song]),
     });
@@ -27,7 +27,7 @@ describe('SongService', () => {
     songDataServiceSpy.delete.and.resolveTo();
     userServiceSpy.currentUser.and.resolveTo({name: 'Benjamin'} as never);
 
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [
         {provide: SongDataService, useValue: songDataServiceSpy},
         {provide: UserService, useValue: userServiceSpy},
diff --git a/src/app/modules/songs/services/text-rendering.service.spec.ts b/src/app/modules/songs/services/text-rendering.service.spec.ts
index 973e838..98c5183 100644
--- a/src/app/modules/songs/services/text-rendering.service.spec.ts
+++ b/src/app/modules/songs/services/text-rendering.service.spec.ts
@@ -333,11 +333,18 @@ Text`;
 
       void expect(sections[0].lines[0].text).toBe('Cmaj7(add9)');
       void expect(sections[0].lines[0].chords).toEqual([
-        {chord: 'C', length: 11, position: 0, add: 'maj7(add9)', slashChord: null, addDescriptor: descriptor('maj7(add9)', {
-          quality: 'major',
-          extensions: ['7'],
-          modifiers: ['(add9)'],
-        })},
+        {
+          chord: 'C',
+          length: 11,
+          position: 0,
+          add: 'maj7(add9)',
+          slashChord: null,
+          addDescriptor: descriptor('maj7(add9)', {
+            quality: 'major',
+            extensions: ['7'],
+            modifiers: ['(add9)'],
+          }),
+        },
       ]);
       void expect(service.validateChordNotation(text)).toEqual([]);
     });
@@ -459,9 +466,7 @@ Text`;
 
       void expect(sections[0].lines[0].type).toBe(LineType.chord);
       void expect(sections[0].lines[0].text).toBe('C Es G');
-      void expect(service.validateChordNotation(text)).toEqual([
-        jasmine.objectContaining({lineNumber: 2, token: 'Es', reason: 'alias', suggestion: 'Eb'}),
-      ]);
+      void expect(service.validateChordNotation(text)).toEqual([jasmine.objectContaining({lineNumber: 2, token: 'Es', reason: 'alias', suggestion: 'Eb'})]);
     });
 
     it('should flag unknown tokens on mostly chord lines', () => {
@@ -470,9 +475,7 @@ Text`;
 C Foo G a
 Text`;
 
-      void expect(service.validateChordNotation(text)).toEqual([
-        jasmine.objectContaining({lineNumber: 2, token: 'Foo', reason: 'unknown_token', suggestion: null}),
-      ]);
+      void expect(service.validateChordNotation(text)).toEqual([jasmine.objectContaining({lineNumber: 2, token: 'Foo', reason: 'unknown_token', suggestion: null})]);
     });
 
     it('should reject tabs on chord lines', () => {
diff --git a/src/app/modules/songs/services/text-rendering.service.ts b/src/app/modules/songs/services/text-rendering.service.ts
index b37bafb..ea1573c 100644
--- a/src/app/modules/songs/services/text-rendering.service.ts
+++ b/src/app/modules/songs/services/text-rendering.service.ts
@@ -7,7 +7,12 @@ import {LineType} from './line-type';
 import {Chord, ChordAddDescriptor, ChordValidationIssue} from './chord';
 import {Line} from './line';
 
-const CHORD_ROOT_DEFINITIONS = [
+type ChordRootDefinition = {
+  canonical: string;
+  aliases: string[];
+};
+
+const CHORD_ROOT_DEFINITIONS: readonly ChordRootDefinition[] = [
   {canonical: 'C#', aliases: ['Cis']},
   {canonical: 'Db', aliases: ['Des']},
   {canonical: 'D#', aliases: ['Dis']},
@@ -45,9 +50,12 @@ const CHORD_ROOT_DEFINITIONS = [
 ] as const;
 
 const CANONICAL_CHORD_ROOTS = CHORD_ROOT_DEFINITIONS.map(entry => entry.canonical);
-const ALTERNATIVE_CHORD_ROOTS = Object.fromEntries(
-  CHORD_ROOT_DEFINITIONS.flatMap(entry => entry.aliases.map(alias => [alias, entry.canonical]))
-) as Record<string, string>;
+const ALTERNATIVE_CHORD_ROOTS = CHORD_ROOT_DEFINITIONS.reduce<Record<string, string>>((aliases, entry) => {
+  entry.aliases.forEach(alias => {
+    aliases[alias] = entry.canonical;
+  });
+  return aliases;
+}, {});
 
 interface ParsedValidationToken {
   prefix: string;
@@ -66,6 +74,11 @@ interface ChordLineValidationResult {
   isChordLike: boolean;
 }
 
+interface ParsedTokenCandidate {
+  token: string;
+  parsed: ParsedValidationToken | null;
+}
+
 @Injectable({
   providedIn: 'root',
 })
@@ -141,9 +154,7 @@ export class TextRenderingService {
   private getLineOfLineText(text: string, transpose: TransposeMode | null, lineNumber?: number): Line | null {
     if (!text) return null;
 
-    const validationResult = lineNumber
-      ? this.getChordLineValidationResult(text, lineNumber)
-      : {chords: [], issues: [], isStrictChordLine: false, isChordLike: false};
+    const validationResult = lineNumber ? this.getChordLineValidationResult(text, lineNumber) : {chords: [], issues: [], isStrictChordLine: false, isChordLike: false};
     const validationIssues = validationResult.issues;
     const hasMatches = validationResult.isStrictChordLine;
     const isChordLikeLine = hasMatches || validationResult.isChordLike;
@@ -194,13 +205,12 @@ export class TextRenderingService {
   }
 
   private getChordLineValidationResult(line: string, lineNumber: number): ChordLineValidationResult {
-    const tokens = line.match(/\S+/g) ?? [];
+    const tokens: string[] = line.match(/\S+/g) ?? [];
     const chords = this.getParsedChords(line);
-    const parsedTokens = tokens
-      .map(token => ({
-        token,
-        parsed: this.parseValidationToken(token),
-      }));
+    const parsedTokens: ParsedTokenCandidate[] = tokens.map(token => ({
+      token,
+      parsed: this.parseValidationToken(token),
+    }));
 
     const recognizedTokens = parsedTokens.filter((entry): entry is {token: string; parsed: ParsedValidationToken} => entry.parsed !== null);
 
@@ -227,12 +237,12 @@ export class TextRenderingService {
         ...issues,
         ...parsedTokens
           .map(entry => {
-          if (!entry.parsed) {
-            return this.createUnknownTokenIssue(line, lineNumber, entry.token);
-          }
+            if (!entry.parsed) {
+              return this.createUnknownTokenIssue(line, lineNumber, entry.token);
+            }
 
-          return this.createValidationIssue(line, lineNumber, entry.token, entry.parsed);
-        })
+            return this.createValidationIssue(line, lineNumber, entry.token, entry.parsed);
+          })
           .filter((issue): issue is ChordValidationIssue => issue !== null),
       ],
       isStrictChordLine,
@@ -482,9 +492,7 @@ export class TextRenderingService {
       suffix = this.stripLeadingDurMarker(normalizedSuffix);
     }
 
-    const slashChord = parsed.slashChord
-      ? this.toMajorRoot(parsed.slashChord)
-      : null;
+    const slashChord = parsed.slashChord ? this.toMajorRoot(parsed.slashChord) : null;
 
     return parsed.prefix + root + suffix + (slashChord ? `/${slashChord}` : '') + parsed.tokenSuffix;
   }
@@ -671,7 +679,7 @@ export class TextRenderingService {
     };
 
     while (rest.length > 0) {
-      const additionMatch = rest.match(/^add([#b+\-]?\d+)/);
+      const additionMatch = rest.match(/^add([#b+-]?\d+)/);
       if (additionMatch) {
         descriptor.additions.push(additionMatch[1]);
         rest = rest.slice(additionMatch[0].length);
@@ -692,7 +700,7 @@ export class TextRenderingService {
         continue;
       }
 
-      const alterationMatch = rest.match(/^[#b+\-]\d+/);
+      const alterationMatch = rest.match(/^[#b+-]\d+/);
       if (alterationMatch) {
         descriptor.alterations.push(alterationMatch[0]);
         rest = rest.slice(alterationMatch[0].length);
diff --git a/src/app/modules/songs/services/transpose.service.spec.ts b/src/app/modules/songs/services/transpose.service.spec.ts
index c31c87e..0c702bc 100644
--- a/src/app/modules/songs/services/transpose.service.spec.ts
+++ b/src/app/modules/songs/services/transpose.service.spec.ts
@@ -13,7 +13,6 @@ describe('TransposeService', () => {
   });
 
   it('should create map upwards', () => {
-    const distance = service.getDistance('D', 'G');
     const map = service.getMap('D', 'G');
 
     if (map) {
@@ -22,7 +21,6 @@ describe('TransposeService', () => {
   });
 
   it('should create map downwards', () => {
-    const distance = service.getDistance('G', 'D');
     const map = service.getMap('G', 'D');
 
     if (map) {
diff --git a/src/app/modules/songs/services/upload.service.spec.ts b/src/app/modules/songs/services/upload.service.spec.ts
index f397560..42a17ef 100644
--- a/src/app/modules/songs/services/upload.service.spec.ts
+++ b/src/app/modules/songs/services/upload.service.spec.ts
@@ -7,12 +7,18 @@ import {UploadService} from './upload.service';
 describe('UploadService', () => {
   let service: UploadService;
   let fileDataServiceSpy: jasmine.SpyObj<FileDataService>;
+  type UploadTaskLike = {
+    on: (event: string, progress: (snapshot: {bytesTransferred: number; totalBytes: number}) => void, error: () => void, success: () => void) => void;
+  };
+  type UploadServiceInternals = UploadService & {
+    startUpload: (path: string, file: File) => UploadTaskLike;
+  };
 
-  beforeEach(() => {
+  beforeEach(async () => {
     fileDataServiceSpy = jasmine.createSpyObj<FileDataService>('FileDataService', ['set']);
     fileDataServiceSpy.set.and.resolveTo('file-1');
 
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [
         {provide: Storage, useValue: {app: 'test-storage'}},
         {provide: FileDataService, useValue: fileDataServiceSpy},
@@ -27,17 +33,16 @@ describe('UploadService', () => {
   });
 
   it('should upload the file, update progress and persist file metadata on success', async () => {
-    const task = {
+    const task: UploadTaskLike = {
       on: (event: string, progress: (snapshot: {bytesTransferred: number; totalBytes: number}) => void, error: () => void, success: () => void) => {
         progress({bytesTransferred: 50, totalBytes: 100});
         success();
       },
     };
-    const uploadSpy = spyOn<any>(service, 'startUpload').and.returnValue(task as never);
+    const uploadSpy = spyOn(service as UploadServiceInternals, 'startUpload').and.returnValue(task);
     const upload = new Upload(new File(['content'], 'test.pdf', {type: 'application/pdf'}));
 
-    service.pushUpload('song-1', upload);
-    await Promise.resolve();
+    await service.pushUpload('song-1', upload);
 
     expect(uploadSpy).toHaveBeenCalledWith('/attachments/song-1/test.pdf', upload.file);
     expect(upload.progress).toBe(50);
diff --git a/src/app/services/config.service.spec.ts b/src/app/services/config.service.spec.ts
index 6e270aa..5ef8a91 100644
--- a/src/app/services/config.service.spec.ts
+++ b/src/app/services/config.service.spec.ts
@@ -7,11 +7,11 @@ describe('ConfigService', () => {
   let service: ConfigService;
   let dbServiceSpy: jasmine.SpyObj<DbService>;
 
-  beforeEach(() => {
+  beforeEach(async () => {
     dbServiceSpy = jasmine.createSpyObj<DbService>('DbService', ['doc$']);
     dbServiceSpy.doc$.and.returnValue(of({copyright: 'CCLI'}) as never);
 
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [{provide: DbService, useValue: dbServiceSpy}],
     });
 
diff --git a/src/app/services/global-settings.service.spec.ts b/src/app/services/global-settings.service.spec.ts
index 9796556..794ed2e 100644
--- a/src/app/services/global-settings.service.spec.ts
+++ b/src/app/services/global-settings.service.spec.ts
@@ -8,13 +8,13 @@ describe('GlobalSettingsService', () => {
   let dbServiceSpy: jasmine.SpyObj<DbService>;
   let updateSpy: jasmine.Spy;
 
-  beforeEach(() => {
+  beforeEach(async () => {
     updateSpy = jasmine.createSpy('update').and.resolveTo();
     dbServiceSpy = jasmine.createSpyObj<DbService>('DbService', ['doc$', 'doc']);
     dbServiceSpy.doc$.and.returnValue(of({churchName: 'ICF'}) as never);
     dbServiceSpy.doc.and.returnValue({update: updateSpy} as never);
 
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [{provide: DbService, useValue: dbServiceSpy}],
     });
 
diff --git a/src/app/services/user/user-session.service.spec.ts b/src/app/services/user/user-session.service.spec.ts
index 66c97a0..ca92e55 100644
--- a/src/app/services/user/user-session.service.spec.ts
+++ b/src/app/services/user/user-session.service.spec.ts
@@ -10,10 +10,10 @@ describe('UserSessionService', () => {
   let dbServiceSpy: jasmine.SpyObj<DbService>;
   let routerSpy: jasmine.SpyObj<Router>;
   let authStateSubject: BehaviorSubject<unknown>;
-  let createAuthStateSpy: jasmine.Spy;
+  let createAuthStateSpy: jasmine.Spy<() => ReturnType<UserSessionService['createAuthState$']>>;
   let runInFirebaseContextSpy: jasmine.Spy;
 
-  beforeEach(() => {
+  beforeEach(async () => {
     authStateSubject = new BehaviorSubject<unknown>(null);
     dbServiceSpy = jasmine.createSpyObj<DbService>('DbService', ['col$', 'doc$', 'doc']);
     routerSpy = jasmine.createSpyObj<Router>('Router', ['navigateByUrl']);
@@ -34,9 +34,9 @@ describe('UserSessionService', () => {
     } as never);
     routerSpy.navigateByUrl.and.resolveTo(true);
 
-    createAuthStateSpy = spyOn<any>(UserSessionService.prototype, 'createAuthState$').and.returnValue(authStateSubject.asObservable() as never);
+    createAuthStateSpy = spyOn(UserSessionService.prototype, 'createAuthState$').and.returnValue(authStateSubject.asObservable() as never);
 
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [
         {provide: DbService, useValue: dbServiceSpy},
         {provide: Router, useValue: routerSpy},
@@ -45,7 +45,7 @@ describe('UserSessionService', () => {
     });
 
     service = TestBed.inject(UserSessionService);
-    runInFirebaseContextSpy = spyOn<any>(service, 'runInFirebaseContext');
+    runInFirebaseContextSpy = spyOn(service as UserSessionService & {runInFirebaseContext: (...args: unknown[]) => Promise<unknown>}, 'runInFirebaseContext');
   });
 
   it('should be created', () => {
@@ -63,9 +63,7 @@ describe('UserSessionService', () => {
   it('should resolve the current user document from auth state', async () => {
     authStateSubject.next({uid: 'user-1'});
 
-    await expectAsync(firstValueFrom(service.user$)).toBeResolvedTo(
-      jasmine.objectContaining({id: 'user-1', name: 'Benjamin'}) as never
-    );
+    await expectAsync(firstValueFrom(service.user$)).toBeResolvedTo(jasmine.objectContaining({id: 'user-1', name: 'Benjamin'}) as never);
   });
 
   it('should cache user lookups by id', async () => {
diff --git a/src/app/services/user/user-song-usage.service.spec.ts b/src/app/services/user/user-song-usage.service.spec.ts
index 8583ba0..f962c32 100644
--- a/src/app/services/user/user-song-usage.service.spec.ts
+++ b/src/app/services/user/user-song-usage.service.spec.ts
@@ -13,7 +13,7 @@ describe('UserSongUsageService', () => {
   let showDataServiceSpy: jasmine.SpyObj<ShowDataService>;
   let showSongDataServiceSpy: jasmine.SpyObj<ShowSongDataService>;
 
-  beforeEach(() => {
+  beforeEach(async () => {
     dbServiceSpy = jasmine.createSpyObj<DbService>('DbService', ['doc']);
     sessionSpy = jasmine.createSpyObj<UserSessionService>('UserSessionService', ['update$'], {
       user$: of({id: 'user-1', role: 'admin', songUsage: {}}) as never,
@@ -23,13 +23,18 @@ describe('UserSongUsageService', () => {
     showSongDataServiceSpy = jasmine.createSpyObj<ShowSongDataService>('ShowSongDataService', ['list$']);
 
     sessionSpy.update$.and.resolveTo();
-    showDataServiceSpy.listRaw$.and.returnValue(of([{id: 'show-1', owner: 'user-1'}, {id: 'show-2', owner: 'user-2'}] as never));
+    showDataServiceSpy.listRaw$.and.returnValue(
+      of([
+        {id: 'show-1', owner: 'user-1'},
+        {id: 'show-2', owner: 'user-2'},
+      ] as never)
+    );
     showSongDataServiceSpy.list$.and.callFake((showId: string) =>
       of(showId === 'show-1' ? ([{songId: 'song-1'}, {songId: 'song-1'}, {songId: 'song-2'}] as never) : ([{songId: 'song-3'}] as never))
     );
     dbServiceSpy.doc.and.returnValue({update: jasmine.createSpy('update').and.resolveTo()} as never);
 
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [
         {provide: DbService, useValue: dbServiceSpy},
         {provide: UserSessionService, useValue: sessionSpy},
diff --git a/src/app/services/user/user.service.spec.ts b/src/app/services/user/user.service.spec.ts
index a5629f6..6f33dc4 100644
--- a/src/app/services/user/user.service.spec.ts
+++ b/src/app/services/user/user.service.spec.ts
@@ -9,7 +9,7 @@ describe('UserService', () => {
   let sessionSpy: jasmine.SpyObj<UserSessionService>;
   let songUsageSpy: jasmine.SpyObj<UserSongUsageService>;
 
-  beforeEach(() => {
+  beforeEach(async () => {
     sessionSpy = jasmine.createSpyObj<UserSessionService>(
       'UserSessionService',
       ['currentUser', 'getUserbyId', 'getUserbyId$', 'login', 'loggedIn$', 'list$', 'logout', 'update$', 'changePassword', 'createNewUser'],
@@ -35,7 +35,7 @@ describe('UserService', () => {
     songUsageSpy.decSongCount.and.resolveTo();
     songUsageSpy.rebuildSongUsage.and.resolveTo({usersProcessed: 1, showsProcessed: 2, showSongsProcessed: 3});
 
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [
         {provide: UserSessionService, useValue: sessionSpy},
         {provide: UserSongUsageService, useValue: songUsageSpy},
diff --git a/src/app/widget-modules/guards/role.guard.spec.ts b/src/app/widget-modules/guards/role.guard.spec.ts
index 05a1f65..30f00b9 100644
--- a/src/app/widget-modules/guards/role.guard.spec.ts
+++ b/src/app/widget-modules/guards/role.guard.spec.ts
@@ -8,11 +8,11 @@ describe('RoleGuard', () => {
   let guard: RoleGuard;
   let routerSpy: jasmine.SpyObj<Router>;
 
-  beforeEach(() => {
+  beforeEach(async () => {
     routerSpy = jasmine.createSpyObj<Router>('Router', ['createUrlTree']);
     routerSpy.createUrlTree.and.callFake(commands => ({commands}) as never);
 
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [
         {provide: Router, useValue: routerSpy},
         {provide: UserService, useValue: {user$: of(null)}},
@@ -37,10 +37,10 @@ describe('RoleGuard', () => {
     });
   });
 
-  it('should allow admins regardless of requiredRoles', done => {
+  it('should allow admins regardless of requiredRoles', async done => {
     TestBed.resetTestingModule();
     routerSpy = jasmine.createSpyObj<Router>('Router', ['createUrlTree']);
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [
         {provide: Router, useValue: routerSpy},
         {provide: UserService, useValue: {user$: of({role: 'user;admin'})}},
@@ -54,10 +54,10 @@ describe('RoleGuard', () => {
     });
   });
 
-  it('should allow users with a matching required role', done => {
+  it('should allow users with a matching required role', async done => {
     TestBed.resetTestingModule();
     routerSpy = jasmine.createSpyObj<Router>('Router', ['createUrlTree']);
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [
         {provide: Router, useValue: routerSpy},
         {provide: UserService, useValue: {user$: of({role: 'leader;user'})}},
@@ -71,11 +71,11 @@ describe('RoleGuard', () => {
     });
   });
 
-  it('should redirect users without the required role to their role default route', done => {
+  it('should redirect users without the required role to their role default route', async done => {
     TestBed.resetTestingModule();
     routerSpy = jasmine.createSpyObj<Router>('Router', ['createUrlTree']);
     routerSpy.createUrlTree.and.returnValue({redirect: ['presentation']} as never);
-    void TestBed.configureTestingModule({
+    await TestBed.configureTestingModule({
       providers: [
         {provide: Router, useValue: routerSpy},
         {provide: UserService, useValue: {user$: of({role: 'presenter'})}},
diff --git a/src/test.ts b/src/test.ts
index 90f5e75..3d49554 100644
--- a/src/test.ts
+++ b/src/test.ts
@@ -17,6 +17,18 @@ import {environment} from './environments/environment';
 import {DbService} from './app/services/db.service';
 
 type req = {keys: () => {map: (context: req) => void}};
+type TestingModuleDefinition = Parameters<typeof TestBed.configureTestingModule>[0];
+type TestingProviderList = NonNullable<NonNullable<TestingModuleDefinition>['providers']>;
+type CollectionStub = {
+  valueChanges: () => ReturnType<typeof of>;
+  add: () => Promise<{id: string}>;
+};
+type DocumentStub = {
+  set: () => Promise<void>;
+  update: () => Promise<void>;
+  delete: () => Promise<void>;
+  collection: () => CollectionStub;
+};
 
 // First, initialize the Angular testing environment.
 getTestBed().initTestEnvironment(BrowserDynamicTestingModule, platformBrowserDynamicTesting());
@@ -24,7 +36,7 @@ getTestBed().initTestEnvironment(BrowserDynamicTestingModule, platformBrowserDyn
 const routeParams$ = new BehaviorSubject<Record<string, unknown>>({});
 const queryParams$ = new BehaviorSubject<Record<string, unknown>>({});
 
-const defaultTestingProviders = [
+const defaultTestingProviders: TestingProviderList = [
   provideNoopAnimations(),
   provideNativeDateAdapter(),
   provideRouter([]),
@@ -49,26 +61,29 @@ const defaultTestingProviders = [
     useValue: {
       col$: () => of([]),
       doc$: () => of(null),
-      col: () => ({
+      col: (): CollectionStub => ({
         valueChanges: () => of([]),
-        add: async () => ({id: 'test-id'}),
+        add: () => Promise.resolve({id: 'test-id'}),
       }),
-      doc: () => ({
-        set: async () => void 0,
-        update: async () => void 0,
-        delete: async () => void 0,
-        collection: () => ({
+      doc: (): DocumentStub => ({
+        set: () => Promise.resolve(),
+        update: () => Promise.resolve(),
+        delete: () => Promise.resolve(),
+        collection: (): CollectionStub => ({
           valueChanges: () => of([]),
-          add: async () => ({id: 'test-id'}),
+          add: () => Promise.resolve({id: 'test-id'}),
         }),
       }),
     },
   },
 ];
 
-const originalConfigureTestingModule = TestBed.configureTestingModule.bind(TestBed);
-TestBed.configureTestingModule = ((moduleDef?: Parameters<typeof TestBed.configureTestingModule>[0]) =>
-  originalConfigureTestingModule({
-    ...moduleDef,
-    providers: [...defaultTestingProviders, ...(moduleDef?.providers ?? [])],
-  })) as typeof TestBed.configureTestingModule;
+const originalConfigureTestingModule = TestBed.configureTestingModule.bind(TestBed) as typeof TestBed.configureTestingModule;
+const configureTestingModule: typeof TestBed.configureTestingModule = moduleDef => {
+  const extraProviders: TestingProviderList = moduleDef?.providers ?? [];
+  const mergedModuleDef: TestingModuleDefinition = moduleDef ? {...moduleDef} : {};
+  mergedModuleDef.providers = defaultTestingProviders.concat(extraProviders);
+
+  return originalConfigureTestingModule(mergedModuleDef);
+};
+TestBed.configureTestingModule = configureTestingModule;