mteb/FreshStackRetrieval huggingface dataset:
Here is my code :
@Component({
  template: `
    resolveData: {{resolveA}} <br>
    data : {{ dataA }}
  `,
})
class MyComponent {
  @Input() resolveA?: string;
  @Input() dataA?: string;
}

@Component({
  selector: 'my-app',
  standalone: true,
  imports: [CommonModule, RouterModule],
  template: `
    <h1>Hello from {{name}}!</h1>

    <router-outlet></router-outlet>
  `,
})
export class App {
  name = 'Angular';
}

bootstrapApplication(App, {
  providers: [
    provideRouter(
      [
        {
          path: '**',
          component: MyComponent,
          data: { dataA: 'My static data' },
          resolve: { resolveA: () => 'My resolved data' },
        },
      ],
    ),
  ],
});

MyComponent should display both the static and the resolved data.
Any idea why ?
According to RFC3 signal-based components with change detection strategy based fully on signals are planned as next thing to be released. So as of now, with zone-based change detection strategy, is there any sense of using signals over the traditional way of setting values to class' properties? Will signals' dependency tree eg. gain performance in zone-based components?
I have the following simple code on my component:
import {Component, effect, signal, WritableSignal} from '@angular/core';
import {AppService} from "../app.service";
import {toSignal} from "@angular/core/rxjs-interop";

@Component({
  selector: 'app-parent',
  templateUrl: './parent.component.html',
  styleUrls: ['./parent.component.css']
})
export class ParentComponent {

  translations: WritableSignal<{data: {}}> = signal({data: []});

  constructor( private appService: AppService) {
    this.translations = toSignal(this.appService.getTranslations());
    effect(() => {
      console.log('translation API:', this.translations());
    });
  }

  changeValue(): void {
    this.translations.set({data: {hello: 'hallo'}})

  }
}

FYI: this.appService.getTranslations() returns an observable
I'm trying out the new features released with Angular v16, and how to convert Observables to Signals.
What I wanted to do on the above code is, I change the value of the WritableSignal Object and log its value on change.
I'm getting the following error:
TS2739: Type 'Signal ' is missing the following properties from type 'WritableSignal{ data: {}; }>': set, update, mutate, asReadonly

Help please.
Angular 16 is recently released and I have created a new standalone project without any module.
then in a standalone component I need to import BrowserAnimationsModule from angular/platform-browser/animations. but when I import it, this error occures:

Poviders from the BrowserModule have already been loaded.  If you
need access to common directives such as NgIf and NgFor, import the
CommonModule instead.

and when I remove it this one:

Unexpected synthetic listener @animation.start found. Please make sure
that: Either BrowserAnimationsModule or NoopAnimationsModule are
imported in your application.

so why first error occures? where is BrowserModule already loaded? and if it has already been imported how do I use it?
Before signals, I had an observable that I would watch to trigger a FormControl's editable property, like this:
this.#isItEditor$
    .pipe(takeUntilDestroyed(this.#destroyRef))
    .subscribe(x => {
        const funded = this.formGroup.controls.funded
        if (x)
            funded.enable()
        else
            funded.disable()
    })

Now I've changed from an observable to a signal, but it feels like, in this case, I still need to create an observable from the signal to then do the pipe/subscribe the same way I used to.
I'm not assigning anything based on the signal changing, I'm just implementing a side effect.  Is this correct?
Example from (https://indepth.dev/posts/1518/takeuntildestroy-in-angular-v16)
This works for one subscribe method but doesn't work for two methods
If you look at the following code, then when the component is destroyed, the second subscription will exist. I just can't understand why and how to make the code work for any number of subscriptions in the component? Perhaps I misunderstood something?
import { takeUntilDestroyed } from '@angular/core/rxjs-interop'

  constructor(
  ) {
    interval(1000).pipe(
      takeUntilDestroyed(),
    ).subscribe(console.log)

    interval(1000).pipe(
      takeUntilDestroyed(),
    ).subscribe(console.log)
  }
I am testing angular 16 signals and per my understanding, when I disable zone.js and call signal.update() the view should be updated with new value. It is not. Please help me to understand why.
main.ts
platformBrowserDynamic().bootstrapModule(AppModule, { ngZone: 'noop' })
    .catch(err => console.error(err));

app.component.ts
@Component({
    selector: 'app-root',
    template: '
        <h1>{{ title() }}</h1>
        <button (click)="click()">Change</button>
    ',
})
export class AppComponent {
    title = signal('Hello');

    click(): void {
        this.title.update((value) => value + "!!");
    }
}

I am expecting that after button click, value of 'title' will be updated from 'Hello' to 'Hello!!'. It is not updated.
Code - https://github.com/suyashjawale/Angular16
I have generated my Angular 16 project using following command and selected routing to yes.
ng new myapp --standalone

And then I generated other components using
ng g c components/home

Since, i used --standalone the boilerplate files are different. (Eg. New file app.routes.ts)
 File Structure
Now I want to implement routing So I added the following code to app.routes.ts.
 app.routes.ts
 app.component.html
But the routing doesn't happen. Idk why?. I have restarted the app. still it doesn't work.
So i implemeted loadComponent. But still it doesn't work. Code below.
 loadComponent way.
Am i doing anything wrong. It works with angular 15. But it has app.routing.module.ts. I have restarted the app but still it doesn't work.
FYI - component is standalone

home.component.ts
When implementing a ControlValueAccessor I need to dynamically display some content based on whether or not the control is required.  I know I can do this to get the control:
readonly #control = inject(NgControl, {self: true})
protected parentRequires = false

ngOnInit(): void {
  this.#control.valueAccessor = this

  this.parentRequires = this.#control.control?.hasValidator(Validators.required) ?? false
}

but that only checks to see if it's currently required. What I am not seeing though is how to detect changes. The parent is going to toggle the required attribute on/off based on other actions in the application.
I'm looking for something like the non-existent this.#control.control.validatorChanges
I try to get sorted data from MatTableDataSource using this code:
this.source = this.dataSource.sortData(this.dataSource.filteredData,this.dataSource.sort);

but I got this error:

Argument of type 'MatSort | null' is not assignable to parameter of type 'MatSort'.Type 'null' is not assignable to type 'MatSort

I am using Angular 16.
So I just updated my project from Angular v15 to v16, and suddenly I get a lot of missing imports errors thrown, such as  error NG8001: 'mat-icon' is not a known element but I have imported everything accordingly to documentation in my app.module.ts:
import {MatIconModule} from '@angular/material/icon';

@NgModule({
  declarations: [...],
  imports: [..., MatIconModule, ...],
  bootstrap: [AppComponent],
})
export class AppModule {}

Or am I missing something in my package.json? I have tried to update everything according to docs:
 "dependencies": {
   "@angular-devkit/core": "^16.2.0",
   "@angular-devkit/schematics": "^16.2.0",
   "@angular/animations": "~16.2.1",
   "@angular/cdk": "^16.2.1",
   "@angular/common": "~16.2.1",
   "@angular/compiler": "~16.2.1",
   "@angular/core": "~16.2.1",
   "@angular/forms": "~16.2.1",
   "@angular/material": "^16.2.1",
   "@angular/platform-browser": "^16.2.1",
   "@angular/platform-browser-dynamic": "~16.2.1",
   "@angular/router": "~16.2.1",
   "bootstrap": "^4.4.1",
   "moment": "^2.26.0",
   "popper.js": "^1.16.0",
   "rxjs": "^6.5.5",
   "tslib": "^2.0.0",
   "xstate": "~4.6.7",
   "zone.js": "~0.13.1"
 }

I tried deleting node_modules folder and reinstalling, running npm install, and npm ci but nothing has worked till now. I only find the tip to add the missing module to app.module.ts but I have this already, has anyone also run into this problem and found a solution?
I just did import { OrderModule } from 'ngx-order-pipe'; in app.module.ts and added it in imports
  imports: [BrowserModule, OrderModule,...],

and when I did ng serve, I am getting below failed to compile error
Let me preface this question with the fact that I started learning Angular about a month ago.
Basically, I have a searchbar component and several different itemcontainer components (each of them displays a different type of item). In an attempt to have access to the serchbar value on any component, I created a searchbarService like so:
import { Injectable, signal, WritableSignal } from '@angular/core';

@Injectable({
  providedIn: 'root'
})
export class SearchBarService {

  searchTextSignal: WritableSignal<string> = signal('');

  setSearch(text: string): void{
    this.searchTextSignal.set(text);
  }
}

The searchbar component calls the setSearch method on input submit. So far so good. Now, the problem comes when trying to work with searchTextSignal on the itemcontainter components. I'm trying to use it like this:
import { Component, signal} from '@angular/core';
import { Factura } from 'src/app/interfaces/factura';
import { FacturaService } from 'src/app/services/factura.service'; //gets items from a placeholder array.
import { SearchBarService } from 'src/app/services/search-bar.service';

@Component({
  selector: 'vista-facturas',
  templateUrl: './vista-facturas.component.html',
  styleUrls: ['./vista-facturas.component.css']
})
export class VistaFacturasComponent {

    facturasArray: Factura[] = []; // has all items
    filteredFacturasArray = signal<Factura[]>([]); // has all filtered items, and is the value that I want to get updated when the signal changes.

    constructor(private facturaService: FacturaService, public searchBarService: SearchBarService) { }

    getFacturas(): void { //initializes the arrays.
        this.facturaService.getFacturas().subscribe(facturasReturned => this.facturasArray = facturasReturned);
        this.filteredFacturasArray.set(this.facturasArray);
    }

    filterFacturas(): void{ // this method is likely the problem

        let text = this.searchBarService.searchTextSignal();

        if (!text) 
            this.filteredFacturasArray.set(this.facturasArray);
        
        this.filteredFacturasArray.set(this.facturasArray.filter(factura => factura?.numero.toString().includes(text)));
    }

    ngOnInit(): void {
        this.getFacturas();
    }
}


The templace uses ngFor like so:
<div class="item-container">
    <div class="item" *ngFor="let factura of filteredFacturasArray()"> 
         <!-- template for the items -->
    </div>
</div>

So, everything boils down to how to make VistaFacturasComponent call filterFacturas() when searchBarService.searchTextSignal() updates. Any ideas?
I have created a custom ui library using only standalone components and here's my public-api.ts file.
/*
 * Public API Surface of ih-ui-lib
 */

export * from './lib/ui-lib.service';
export * from './lib/ui-lib.component';
export * from './lib/ui-lib.module';

// Exporting components
export * from './lib/components/card/card.component';
export * from './lib/components/card/card-heading/card-heading.component';
export * from './lib/components/card/card-content/card-content.component';
export * from './lib/components/cards-responsive/cards-responsive.component';
export * from './lib/components/collapsible/collapsible.component';
export * from './lib/components/heading/heading.component';
export * from './lib/components/icon/icon.component';
export * from './lib/components/paragraph/paragraph.component';
export * from './lib/components/pill/pill.component';
export * from './lib/components/scrollbar/scrollbar.component';
export * from './lib/components/search/search.component';
export * from './lib/components/search/components/search-column/search-column.component';
export * from './lib/components/search/components/search-row/search-row.component';
export * from './lib/components/status-bar/status-bar.component';
export * from './lib/components/timeline/timeline.component';


Here's a example of a component:
import { Component, Input, OnInit } from '@angular/core';
import { CommonModule } from '@angular/common';

@Component({
  selector: 'card',
  standalone: true,
  imports: [CommonModule],
  templateUrl: './card.component.html',
  styleUrls: ['./card.component.css']
})
export class CardComponent implements OnInit {

  @Input() classes: string = '';
  @Input() width: string = '';
  @Input() radius: string = 'sm';

  constructor() { }

  ngOnInit(): void {
  }

}

Here's how I'm adding to my app's package.json
  "ui-library": "git+repo+url.git#branch",

I also have index.ts file at the root of my lib which just exports the public-api.ts file so I can access it from the root.
export * from './dist/ih-ui-lib/public-api';
I created a new standalone component in my app and tried to import that component into my app.
And that is when I get this error:
TypeError: Cannot read properties of undefined (reading 'ɵcmp')
I'm using angular 16.
I tried using modules for components and still it is the same.
I tried importing standalone component to a module in my app and it failed to recognise that component.
I've updated my project to Angular 16. In app.module.ts, I have an array of components named entryComponents. However, the entryComponents is no longer available in Angular 16. Where should I add these components to my project:
entryComponents:[
    PayResultDialogComponent,
    MessageBoxComponent
  ],
After Angular CanActivate interface became deprecated, I've changed my guards for simple const functions based on official documentation.
For example here is my inverseAuthGuard method, which seems working correctly:
export const inverseAuthGuard = (): boolean => {
  const authService = inject(AuthService);
  const router = inject(Router);
  if (authService.isAuthenticated()) {
    router.navigate(['/visual-check']);
    return false;
  }
  return true;
};

My problem is that, I want to write some unit tests for it and I don't know how can I inject a mock authService and a mockRouter into this function. I've watched this video, which explains how can I inject mock services into a class, but for my guard function I couldn't make it working.
I have tried some ways, but I couldn' find any solution.
If I do this way:

describe('InverseAuthGuard', () => {
  beforeEach(() => {
    TestBed.configureTestingModule({
      imports: [HttpClientTestingModule, RouterTestingModule],
      providers: [
        { provide: AuthService, useValue: AuthService },
        { provide: Router, useValue: Router },
      ],
    });
  });

  fit('should return true on not authenticated user', () => {
    const result = inverseAuthGuard();
    expect(result).toBe(true);
  });
});

I've got the following error:
NG0203: inject() must be called from an injection context such as a constructor, a factory function, a field initializer, or a function used with `runInInjectionContext`

If I do that way, what I saw in the video:
describe('InverseAuthGuard', () => {
  const setupWithDI = (authService: unknown, router: unknown) =>
    TestBed.configureTestingModule({
      providers: [
        { provide: AuthService, useValue: authService },
        { provide: Router, useValue: router },
      ],
    }).inject(inverseAuthGuard);

  beforeEach(() => {
    TestBed.configureTestingModule({
      imports: [HttpClientTestingModule, RouterTestingModule],
    });
  });

  fit('should return true on not authenticated user', () => {
    const mockAuthService: unknown = { isAuthenticated: () => true };
    const mockRouter: Router = jasmine.createSpyObj(['navigate']);
    setupWithDI(mockAuthService, mockRouter);
    const result = inverseAuthGuard();
    expect(result).toBe(true);
  });
});

I've got the following error:
NullInjectorError: No provider for inverseAuthGuard!

Of course, I've tried providing inverseAuthGuard somehow, but without any success.
I think there should be an easy solution for it, but I didn't find in any documentation. I will be thanksful for any answer.
My student is asking me : << why should I inject stuff inside the constructor instead of injecting directly in the attribute of the class ?
What I teach to her  :
Use injection inside the constructor
housingLocationList: HousingLocation[] = [];
housingService: HousingService = inject(HousingService);

constructor() {
  this.housingLocationList = this.housingService.getAllHousingLocations();
}

What She wants to do :
Inject the housing service directly inside the class attribute
@Component({
//...
})
export class HomeComponent {

  housingService: HousingService = inject(HousingService);
  housingLocationList: HousingLocation[] = this.housingService.getAllHousingLocations();
 
  constructor() {}
}

What should I answer to her ?
What I tried :
I tried to convice her that it's a dogma and she should not think about it and just do it like that :)
What I expected :
She accept my answer
What actually resulted:
She still wants to know
I'm migrating from angular 16 to 17 and I encountered the issue that I need to replace all the usages of *ngFor and *ngIf and ngSwitch with the new syntax (@for and @if and @switch).
I know the v17 still supports the old syntax but is there a way to migrate them or a regex to replace them with the new form?
I am unable to add a scrollOffset option to my Angular 17 bootstrap config.
Before Angular 17, you'd have an app module that imports a routing module as such:
import { NgModule } from '@angular/core';
import { PreloadAllModules, RouterModule, Routes } from '@angular/router';

const routes: Routes = [
  {
    path: '',
    component: HomeComponent,
  },
];

@NgModule({
  imports: [
    RouterModule.forRoot(routes, {
      initialNavigation: 'enabledBlocking',
      scrollPositionRestoration: 'enabled',
      anchorScrolling: 'enabled',
      scrollOffset: [0, 100],
      preloadingStrategy: PreloadAllModules,
    }),
  ],
  exports: [RouterModule]
})
export class AppRoutingModule { }

In Angular 17, you now pass a config object to the bootstrapApplication function, and I am unable to find a way to add the scrollOffset config as before (see above):
// main.ts

import { bootstrapApplication } from '@angular/platform-browser';
import { appConfig } from './app/app.config';
import { AppComponent } from './app/app.component';

bootstrapApplication(AppComponent, appConfig)
  .catch((err) => console.error(err));

// app.config.ts
import { ApplicationConfig } from '@angular/core';
import { withInMemoryScrolling } from '@angular/router';
import { routes } from './app.routes';

export const appConfig: ApplicationConfig = {
  providers: [
    provideRouter(
      routes,
      withInMemoryScrolling({
        scrollPositionRestoration: 'enabled',
        anchorScrolling: 'enabled',
      }),
      // Where can I put my scrollOffset???
    ),
  ],
};
I have an angular project using ng2-right-click-menu for context menu
Since with Angular 16 its not compatible, i have to switch to an alternative solution
When i searched for Angular material menu
<mat-menu> 

came across Angular CDK menu.
import {CdkMenuModule} from '@angular/cdk/menu;

Confused which one to use for my application.
As the menu should be customizable.
I’m trying to use the new angular signal effect to listen on changes for a signal array of objects.
But the effect doesn’t get called at any time.
It gets only called if I filter out one object of the array.
Pushing and updating an object of the array doesn’t call the effect.
Here’s my code:
// this code trigger the effect
case "DELETE":
          this.houses.update(((houses: House[]) => houses.filter((house: House) => house.id !== payload.old.id)));
          break;
// this code doesn’t trigger the effect
        case "INSERT":
          this.houses.update((houses: House[]) => {const updatedHouses = houses.push(payload.new); return updatedHouses;})
          break;

effect(() => {
      this.filteredHouses = this.houses();
      this.onFilter();
    });

Obey of I reset the value of the signal and set the new value afterwards, the effect will be called. What am I doing wrong?
Attempting to implement a guard with Okta authentication in Angular v17, I encountered an error indicating a lack of provider for the OktaAuthStateService.
Upon logging in through Okta, I gain access to the login status component. However, when attempting to navigate to the dashboard using routes, I encounter an error related to the absence of a provider, specifically the OktaAuthStateService.
auth.guard.ts
import { Router, UrlTree, } from '@angular/router';
import {  Injectable } from '@angular/core';
import { OktaAuthStateService } from '@okta/okta-angular';
import { Observable, map, take } from 'rxjs';

@Injectable({ providedIn: 'root' }) export class AuthGuard { constructor( public authStateService: OktaAuthStateService, private router: Router ) {}

canActivate(): Observable<boolean | UrlTree> { 
return this.authStateService.authState$.pipe( map((loggedIn) => { console.log('loggedIn', loggedIn);
if (!loggedIn) {
      this.router.navigate(['/login']);
      return false;
    }
    return true;
  }),
  take(1)
);
} }

app.module.ts

import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { OktaAuthModule, OKTA_CONFIG } from '@okta/okta-angular';
import { OktaAuth } from '@okta/okta-auth-js';
import myAppConfig from './app.config';
const oktaConfig = myAppConfig.oidc;
const oktaAuth = new OktaAuth(oktaConfig);

@NgModule({
declarations: [],
imports: [OktaAuthModule],
providers: [{ provide: OKTA_CONFIG, useValue: { oktaAuth } }],
bootstrap: [AppComponent],
})
export class AppModule {}

app.routes.ts

import { Routes, mapToCanActivate } from '@angular/router';
import { OktaCallbackComponent, OktaAuthGuard } from '@okta/okta-angular';
import { LoginComponent } from './modules/auth/components/login/login.component';
import { AuthGuard } from './core/guards/auth.guard';
import { DashboardComponent } from './modules/pages/dashboard/dashboard.component';
import { LoginStatusComponent } from './modules/auth/components/login-status/login-status.component';
import { CommonGuard } from './core/guards/common.guard';

export const routes: Routes = [
{
path: '',
redirectTo: 'login',
pathMatch: 'full',
},
{
path: 'login',
component: LoginComponent,
},
{ path: 'login-status', component: LoginStatusComponent },
{ path: 'implicit/callback', component: OktaCallbackComponent },
{
path: 'dashboard',
canActivate: mapToCanActivate([AuthGuard]),
component: DashboardComponent,
},
];
Since angular now has stanalone components, how do we show one comonent inside another like we used to. e.g  inside app body
I dont have any idea about how standalone components work and i'm a fresher in angular just migrated from angular 12 to angular 17.
I am following the docs of angular from Angular Guard
Below is my Guest Guard Code. The logic is to check if the user is available or not,
if available, redirect to dashboard else proceed to login page.
import { CanActivateFn } from '@angular/router';
import { Injectable } from '@angular/core';


@Injectable()

class PermissionsService {
  canActivate(): boolean {
    return false;
  }

}

export const guestGuard: CanActivateFn =  (route, state) => {
  return inject(PermissionsService).canActivate();
};

But this code throws error as
[ERROR] TS2304: Cannot find name 'inject'. [plugin angular-compiler]

src/app/guards/guest.guard.ts:15:13:
  15 │       return inject(PermissionsService).canActivate();
I have been googling this an there are many versions, most are old.
I have an angular 16 project which was not made with standalone components but I've created this 1 standalone component which I want to load as a dialog.
My question is, in angular 16, how do I go about loading a standalone component without the use of routing or preloading it?
Can it be done?
Any guidance would be appreciated as there's just too many versions on the internet.