Strict done!!

overlord/src/app/net-transactions/net-transactions.component.ts

@@ -16,10 +16,10 @@ import { NetTransactionsDataSource } from './net-transactions-datasource';
 export class NetTransactionsComponent implements OnInit {
   @ViewChild(MatPaginator, { static: true }) paginator?: MatPaginator;
   @ViewChild(MatSort, { static: true }) sort?: MatSort;
-  dataSource: NetTransactionsDataSource;
+  info: NetTransactions = new NetTransactions();
+  dataSource: NetTransactionsDataSource = new NetTransactionsDataSource(this.info.body);
   form: FormGroup;
-  info: NetTransactions;
-  selectedRowId: string;
+  selectedRowId = '';
   /** Columns displayed in the table. Columns IDs can be added, removed, or reordered. */
   displayedColumns = ['type', 'name', 'debit', 'credit'];
 
@@ -39,7 +39,7 @@ export class NetTransactionsComponent implements OnInit {
         startDate: moment(this.info.startDate, 'DD-MMM-YYYY').toDate(),
         finishDate: moment(this.info.finishDate, 'DD-MMM-YYYY').toDate(),
       });
-      this.dataSource = new NetTransactionsDataSource(this.paginator, this.sort, this.info.body);
+      this.dataSource = new NetTransactionsDataSource(this.info.body, this.paginator, this.sort);
     });
   }
 
@@ -56,10 +56,9 @@ export class NetTransactionsComponent implements OnInit {
   prepareSubmit(): NetTransactions {
     const formModel = this.form.value;
 
-    return {
+    return new NetTransactions({
       startDate: moment(formModel.startDate).format('DD-MMM-YYYY'),
       finishDate: moment(formModel.finishDate).format('DD-MMM-YYYY'),
-      body: [],
-    };
+    });
   }
 }