Updated to angular 11

Now compiling with strict mode in typescript
Need to error checking now

bookie/src/app/tables/table-detail/table-detail.component.spec.ts

@@ -1,4 +1,4 @@
-import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+import { ComponentFixture, TestBed, waitForAsync } from '@angular/core/testing';
 
 import { TableDetailComponent } from './tables-detail.component';
 
@@ -6,11 +6,13 @@ describe('TableDetailComponent', () => {
   let component: TableDetailComponent;
   let fixture: ComponentFixture<TableDetailComponent>;
 
-  beforeEach(async(() => {
-    TestBed.configureTestingModule({
-      declarations: [TableDetailComponent],
-    }).compileComponents();
-  }));
+  beforeEach(
+    waitForAsync(() => {
+      TestBed.configureTestingModule({
+        declarations: [TableDetailComponent],
+      }).compileComponents();
+    }),
+  );
 
   beforeEach(() => {
     fixture = TestBed.createComponent(TableDetailComponent);

bookie/src/app/tables/table-detail/table-detail.component.ts

@@ -15,10 +15,10 @@ import { TableService } from '../table.service';
   styleUrls: ['./table-detail.component.css'],
 })
 export class TableDetailComponent implements OnInit, AfterViewInit {
-  @ViewChild('nameElement', { static: true }) nameElement: ElementRef;
+  @ViewChild('nameElement', { static: true }) nameElement?: ElementRef;
   form: FormGroup;
-  sections: Section[];
-  item: Table;
+  sections: Section[] = [];
+  item: Table = new Table();
 
   constructor(
     private route: ActivatedRoute,
@@ -28,10 +28,7 @@ export class TableDetailComponent implements OnInit, AfterViewInit {
     private toaster: ToasterService,
     private ser: TableService,
   ) {
-    this.createForm();
-  }
-
-  createForm() {
+    // Create form
     this.form = this.fb.group({
       name: '',
       seats: '',
@@ -41,7 +38,8 @@ export class TableDetailComponent implements OnInit, AfterViewInit {
   }
 
   ngOnInit() {
-    this.route.data.subscribe((data: { item: Table; sections: Section[] }) => {
+    this.route.data.subscribe((value) => {
+      const data = value as { item: Table; sections: Section[] };
       this.showItem(data.item);
       this.sections = data.sections;
     });
@@ -59,7 +57,9 @@ export class TableDetailComponent implements OnInit, AfterViewInit {
 
   ngAfterViewInit() {
     setTimeout(() => {
-      this.nameElement.nativeElement.focus();
+      if (this.nameElement !== undefined) {
+        this.nameElement.nativeElement.focus();
+      }
     }, 0);
   }
 
@@ -76,7 +76,7 @@ export class TableDetailComponent implements OnInit, AfterViewInit {
   }
 
   delete() {
-    this.ser.delete(this.item.id).subscribe(
+    this.ser.delete(this.item.id as string).subscribe(
       () => {
         this.toaster.show('Success', '');
         this.router.navigateByUrl('/tables');

bookie/src/app/tables/table-list/table-list-datasource.ts

@@ -5,7 +5,7 @@ import { tap } from 'rxjs/operators';
 import { Table } from '../../core/table';
 
 export class TableListDataSource extends DataSource<Table> {
-  private data: Table[];
+  private data: Table[] = [];
 
   constructor(private readonly dataObs: Observable<Table[]>) {
     super();

bookie/src/app/tables/table-list/table-list.component.ts

@@ -17,10 +17,10 @@ import { TableListDataSource } from './table-list-datasource';
   styleUrls: ['./table-list.component.css'],
 })
 export class TableListComponent implements OnInit {
-  @ViewChild('table', { static: true }) table: MatTable<MenuCategory>;
-  dataSource: TableListDataSource;
-  list: Table[];
-  data: BehaviorSubject<Table[]>;
+  @ViewChild('table', { static: true }) table?: MatTable<MenuCategory>;
+  data: BehaviorSubject<Table[]> = new BehaviorSubject<Table[]>([]);
+  dataSource: TableListDataSource = new TableListDataSource(this.data);
+  list: Table[] = [];
   /** Columns displayed in the table. Columns IDs can be added, removed, or reordered. */
   displayedColumns = ['name', 'seats', 'section', 'isActive'];
 
@@ -30,14 +30,14 @@ export class TableListComponent implements OnInit {
     private toaster: ToasterService,
     private ser: TableService,
   ) {
-    this.data = new BehaviorSubject([]);
     this.data.subscribe((data: Table[]) => {
       this.list = data;
     });
   }
 
   ngOnInit() {
-    this.route.data.subscribe((data: { list: Table[] }) => {
+    this.route.data.subscribe((value) => {
+      const data = value as { list: Table[] };
       this.data.next(data.list);
     });
     this.dataSource = new TableListDataSource(this.data);

bookie/src/app/tables/table.service.ts

@@ -18,7 +18,7 @@ const serviceName = 'TableService';
 export class TableService {
   constructor(private http: HttpClient, private log: ErrorLoggerService) {}
 
-  get(id: string): Observable<Table> {
+  get(id: string | null): Observable<Table> {
     const getUrl: string = id === null ? url : `${url}/${id}`;
     return <Observable<Table>>(
       this.http