Updated to angular 11

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

bookie/src/app/cashier-report/cashier-report.component.ts

@@ -17,10 +17,10 @@ import { CashierReportService } from './cashier-report.service';
   styleUrls: ['./cashier-report.component.css'],
 })
 export class CashierReportComponent implements OnInit {
-  dataSource: CashierReportDataSource;
+  activeCashiers: User[] = [];
+  info: CashierReport = new CashierReport();
+  dataSource: CashierReportDataSource = new CashierReportDataSource(this.info.amounts);
   form: FormGroup;
-  activeCashiers: User[];
-  info: CashierReport;
 
   /** Columns displayed in the table. Columns IDs can be added, removed, or reordered. */
   displayedColumns = ['name', 'amount'];
@@ -33,11 +33,17 @@ export class CashierReportComponent implements OnInit {
     private toaster: ToasterService,
     private ser: CashierReportService,
   ) {
-    this.createForm();
+    // Create form
+    this.form = this.fb.group({
+      startDate: '',
+      finishDate: '',
+      cashier: '',
+    });
   }
 
   ngOnInit() {
-    this.route.data.subscribe((data: { cashiers: User[]; info: CashierReport }) => {
+    this.route.data.subscribe((value) => {
+      const data = value as { cashiers: User[]; info: CashierReport };
       this.activeCashiers = data.cashiers;
       this.info = data.info;
       this.form.setValue({
@@ -64,7 +70,7 @@ export class CashierReportComponent implements OnInit {
   }
 
   print() {
-    this.ser.print(this.info.cashier.id, this.info.startDate, this.info.finishDate).subscribe(
+    this.ser.print(this.info.cashier.id as string, this.info.startDate, this.info.finishDate).subscribe(
       () => {
         this.toaster.show('', 'Successfully Printed');
       },
@@ -74,23 +80,15 @@ export class CashierReportComponent implements OnInit {
     );
   }
 
-  createForm() {
-    this.form = this.fb.group({
-      startDate: '',
-      finishDate: '',
-      cashier: '',
-    });
-  }
-
   getInfo(): CashierReport {
     const formModel = this.form.value;
 
-    return {
+    return new CashierReport({
       cashier: new User({ id: formModel.cashier }),
       cashiers: this.info.cashiers,
       startDate: moment(formModel.startDate).format('DD-MMM-YYYY'),
       finishDate: moment(formModel.finishDate).format('DD-MMM-YYYY'),
-    };
+    });
   }
 
   exportCsv() {