Strict done!!

overlord/src/app/user/user-detail/user-detail.component.ts

@@ -1,5 +1,5 @@
 import { AfterViewInit, Component, ElementRef, OnInit, ViewChild } from '@angular/core';
-import { FormArray, FormBuilder, FormGroup } from '@angular/forms';
+import { FormArray, FormBuilder, FormControl, FormGroup } from '@angular/forms';
 import { MatDialog } from '@angular/material/dialog';
 import { ActivatedRoute, Router } from '@angular/router';
 
@@ -14,9 +14,9 @@ import { UserService } from '../user.service';
   styleUrls: ['./user-detail.component.css'],
 })
 export class UserDetailComponent implements OnInit, AfterViewInit {
-  @ViewChild('nameElement', { static: true }) nameElement: ElementRef;
+  @ViewChild('nameElement', { static: true }) nameElement?: ElementRef;
   form: FormGroup;
-  item: User;
+  item: User = new User();
   hide: boolean;
 
   constructor(
@@ -46,9 +46,9 @@ export class UserDetailComponent implements OnInit, AfterViewInit {
 
   showItem(item: User) {
     this.item = item;
-    this.form.get('name').setValue(item.name);
-    this.form.get('password').setValue('');
-    this.form.get('lockedOut').setValue(item.lockedOut);
+    (this.form.get('name') as FormControl).setValue(item.name);
+    (this.form.get('password') as FormControl).setValue('');
+    (this.form.get('lockedOut') as FormControl).setValue(item.lockedOut);
     this.form.setControl(
       'roles',
       this.fb.array(
@@ -63,7 +63,7 @@ export class UserDetailComponent implements OnInit, AfterViewInit {
 
   ngAfterViewInit() {
     setTimeout(() => {
-      this.nameElement.nativeElement.focus();
+      if (this.nameElement) this.nameElement.nativeElement.focus();
     }, 0);
   }
 
@@ -92,7 +92,7 @@ export class UserDetailComponent 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('/users');

overlord/src/app/user/user-list/user-list.component.ts

@@ -15,8 +15,8 @@ import { UserListDataSource } from './user-list-datasource';
 export class UserListComponent implements OnInit {
   @ViewChild(MatPaginator, { static: true }) paginator?: MatPaginator = undefined;
   @ViewChild(MatSort, { static: true }) sort?: MatSort = undefined;
-  dataSource: UserListDataSource;
-  list: User[];
+  list: User[] = [];
+  dataSource: UserListDataSource = new UserListDataSource(this.list);
   /** Columns displayed in the table. Columns IDs can be added, removed, or reordered. */
   displayedColumns = ['name', 'lockedOut', 'groups'];
 
@@ -27,6 +27,6 @@ export class UserListComponent implements OnInit {
       const data = value as { list: User[] };
       this.list = data.list;
     });
-    this.dataSource = new UserListDataSource(this.paginator, this.sort, this.list);
+    this.dataSource = new UserListDataSource(this.list, this.paginator, this.sort);
   }
 }

overlord/src/app/user/user.service.ts

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