Updated to angular 11

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

bookie/src/app/product-sale-report/product-sale-report.component.ts

@@ -14,9 +14,9 @@ import { ProductSaleReportDataSource } from './product-sale-report-datasource';
   styleUrls: ['./product-sale-report.component.css'],
 })
 export class ProductSaleReportComponent implements OnInit {
-  dataSource: ProductSaleReportDataSource;
+  info: ProductSaleReport = new ProductSaleReport();
+  dataSource: ProductSaleReportDataSource = new ProductSaleReportDataSource(this.info.amounts);
   form: FormGroup;
-  info: ProductSaleReport;
 
   /** Columns displayed in the table. Columns IDs can be added, removed, or reordered. */
   displayedColumns = ['name', 'unbilled', 'sale', 'noCharge', 'staff', 'void'];
@@ -27,11 +27,16 @@ export class ProductSaleReportComponent implements OnInit {
     private fb: FormBuilder,
     private toCsv: ToCsvService,
   ) {
-    this.createForm();
+    // Create form
+    this.form = this.fb.group({
+      startDate: '',
+      finishDate: '',
+    });
   }
 
   ngOnInit() {
-    this.route.data.subscribe((data: { info: ProductSaleReport }) => {
+    this.route.data.subscribe((value) => {
+      const data = value as { info: ProductSaleReport };
       this.info = data.info;
       this.form.setValue({
         startDate: moment(this.info.startDate, 'DD-MMM-YYYY').toDate(),
@@ -51,20 +56,13 @@ export class ProductSaleReportComponent implements OnInit {
     });
   }
 
-  createForm() {
-    this.form = this.fb.group({
-      startDate: '',
-      finishDate: '',
-    });
-  }
-
   getInfo(): ProductSaleReport {
     const formModel = this.form.value;
 
-    return {
+    return new ProductSaleReport({
       startDate: moment(formModel.startDate).format('DD-MMM-YYYY'),
       finishDate: moment(formModel.finishDate).format('DD-MMM-YYYY'),
-    };
+    });
   }
 
   exportCsv() {