Signal Forms Are Finally Production-Ready in Angular 22 — Here’s What Changes (Part 2)

Angular 22 graduates Signal Forms from experimental to stable — here is everything you need to know to start using them today.

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Part 1 of the series: The OnPush Default Has Arrived
Part 2 of the series: "Angular 22 Features Every Developer Should Know"

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Have you ever looked at a Reactive Forms setup and thought, "this is way more code than the problem deserves"? You write a FormGroup, wire up FormControl objects, subscribe to valueChanges, manage your subscriptions, then manually trigger change detection just to show a validation error. For a login form. A login form.

If you have been working with Angular for any length of time, you know exactly what I am talking about.

Angular 22 — released on June 3, 2026 — changes that conversation entirely. Signal Forms have graduated from experimental to stable, and they are ready for production. In this article we will dig into what Signal Forms actually are, how they compare to Reactive Forms, and how to build something real with them.

By the end, you will know:

• Why Signal Forms exist and what problem they solve
• How form(), FormRoot, and FormField work
• How to write validation, async validation, and debounced inputs
• How to migrate gradually without rewriting your entire codebase
• How to write unit tests for Signal Form components

If you enjoy this kind of deep-dive into Angular internals, follow me here on Medium. I publish one practical article every week, and I would love to have you along for the ride.

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Note: The code snippets in this article reflect Angular 22 APIs as of the stable release. Some patterns shown may differ from earlier experimental versions of Signal Forms. Always refer to the official Angular documentation for the most current API and syntax.

---

Why Angular Needed Signal Forms

Let me show you something. Here is a minimal user registration form using Reactive Forms:

import { Component, OnDestroy, OnInit } from '@angular/core';
import {
  FormBuilder,
  FormGroup,
  Validators,
  ReactiveFormsModule
} from '@angular/forms';
import { Subject, takeUntil } from 'rxjs';

@Component({
  selector: 'app-registration',
  imports: [ReactiveFormsModule],
  template: `
    <form [formGroup]="form" (ngSubmit)="onSubmit()">
      <input formControlName="email" />
      @if (form.get('email')?.invalid && form.get('email')?.touched) {
        <span>Email is required</span>
      }
      <button type="submit">Register</button>
    </form>
  `
})
export class RegistrationComponent implements OnInit, OnDestroy {
  form!: FormGroup;
  private destroy$ = new Subject<void>();

  constructor(private fb: FormBuilder) {}

  ngOnInit(): void {
    this.form = this.fb.group({
      email: ['', [Validators.required, Validators.email]],
      password: ['', [Validators.required, Validators.minLength(8)]]
    });

    this.form.get('email')!.valueChanges
      .pipe(takeUntil(this.destroy$))
      .subscribe(value => {
        // do something
      });
  }

  ngOnDestroy(): void {
    this.destroy$.next();
    this.destroy$.complete();
  }

  onSubmit(): void {
    if (this.form.valid) {
      console.log(this.form.value);
    }
  }
}

There is a lot going on here that has nothing to do with the actual form logic. You have lifecycle methods, manual subscription teardown with Subject, and imperative wiring between the FormBuilder and the template. Now multiply this across dozens of forms in a real application.

Reactive Forms were built in a different era of Angular — before Signals, before zoneless change detection, before the framework had a unified reactivity model. They work, but they carry the weight of that history. Every valueChanges subscription is a subscription that needs to be cleaned up. Every patchValue call is a push-based mutation that the rest of your Signal-based code has to accommodate.

Signal Forms were designed to fit naturally into the Signal ecosystem, with a model-driven API that is reactive by default and requires almost no boilerplate.

---

What Are Signal Forms?

At their core, Signal Forms replace the FormGroup/FormControl tree with a FieldTree — a deeply nested Signal structure where every property of your form model is represented as a Signal, complete with form state like dirty, invalid, touched, and errors.

The mental model shift is significant: instead of constructing a parallel form structure that mirrors your data model, you hand your data Signal directly to the form() function. Angular builds the FieldTree from it, and the template binds to that tree. There is no synchronization step, no patchValue, and no subscription to manage.

Here is the architecture at a glance:

Signal (your data)
       |
    form()
       |
    FieldTree (FieldRoot + FieldNode per property)
       |
  FormField directive (binds input -> FieldNode)
       |
   Template

Every node in the FieldTree is reactive. Reading field.value(), field.dirty(), or field.errors() in a template creates a reactive dependency — Angular will re-render only the parts of the template that actually consumed the changed signal.

---

Creating Your First Signal Form

Let us start with the simplest possible case: a contact form with a name and email.

import { Component, signal } from '@angular/core';
import { form, required } from '@angular/forms/signals';
import { FormField } from '@angular/forms/signals';

interface ContactModel {
  name: string;
  email: string;
}

@Component({
  selector: 'app-contact-form',
  imports: [FormField],
  template: `
    <form (submit)="onSubmit($event)">
      <div>
        <label for="name">Name</label>
        <input id="name" [formField]="contactForm.name" />
        @let nameField = contactForm.name();
        @if (nameField.touched() && nameField.invalid()) {
          <span class="error">Name is required</span>
        }
      </div>

      <div>
        <label for="email">Email</label>
        <input id="email" type="email" [formField]="contactForm.email" />
        @let emailField = contactForm.email();
        @if (emailField.touched() && emailField.invalid()) {
          <span class="error">Valid email is required</span>
        }
      </div>

      <button type="submit" [disabled]="contactForm().invalid()">Submit</button>
    </form>
  `
})
export class ContactFormComponent {
  protected readonly model = signal<ContactModel>({ name: '', email: '' });

  protected readonly contactForm = form(this.model, (f) => {
    required(f.name);
    required(f.email);
  });

  protected onSubmit(event: SubmitEvent): void {
    event.preventDefault();
    if (this.contactForm().valid()) {
      console.log(this.contactForm().value());
    }
  }
}

Notice what is not there. No FormBuilder. No ngOnInit. No this.form.get('email'). The form() function takes your Signal and an optional schema callback where you declare validation rules. What comes back is the FieldTree — and you bind directly to each node in the template using [formField].

---

FormRoot Explained

FormRoot is what form() returns at the top level. Think of it as the Signal Forms equivalent of FormGroup, but it is a Signal itself rather than a plain class instance.

Calling contactForm() — invoking it like a function — gives you access to the root-level form state:

// Check the whole form
const isFormValid = this.contactForm().valid();
const isFormDirty = this.contactForm().dirty();
const formValue = this.contactForm().value();

// Reset the entire form to its initial model value
this.contactForm().reset();

// Mark all fields as touched (useful before submit)
this.contactForm().markAllAsTouched();

One important behavior in Angular 22: markAsTouched() now marks a field and all its descendants as touched in one call. If you want to mark only the field itself without touching children, you pass { skipDescendants: true }.

---

FormField Explained

Each property in your FieldTree is a FormField — a Signal node that holds the field's current value and its form state. Reading any of these in a template creates a reactive dependency:

@Component({
  template: `
    <input [formField]="userForm.username" />

    @let username = userForm.username();
    @if (username.touched()) {
      @if (username.getError('required')) {
        <div class="error">Username is required</div>
      }
      @if (username.getError('minLength'); as minLengthError) {
        <div class="error">
          Username must be at least {{ minLengthError.minLength }} characters
        </div>
      }
    }
  `
})

The new getError() method in Angular 22 is a significant quality-of-life improvement. Previously, you had to iterate over field.errors() to find the specific error you wanted. Now you call getError('required') directly, and it narrows the return type for you — so TypeScript knows the shape of the minLength error object.

The key FormField state signals are:

• field.value() — the current value
• field.dirty() — true if the user has changed the value
• field.touched() — true if the field has been blurred
• field.invalid() — true if any validator is failing
• field.errors() — the full error map
• field.getError('key') — typed access to a specific error

---

Validation in Signal Forms

Built-in Validators

Angular 22's Signal Forms ship with a set of familiar validators, imported from @angular/forms/signals:

import {
  form,
  required,
  minLength,
  maxLength,
  pattern,
  email,
  min,
  max,
  minDate,
  maxDate
} from '@angular/forms/signals';

protected readonly profileForm = form(this.profile, (f) => {
  required(f.username);
  minLength(f.username, 3);
  maxLength(f.username, 30);
  pattern(f.username, /^[a-zA-Z0-9_]+$/);
  required(f.email);
  email(f.email);
  min(f.age, 18);
  max(f.age, 120);
  // Angular 22 new additions
  minDate(f.birthDate, new Date('1900-01-01'));
  maxDate(f.birthDate, new Date());
});

The minDate and maxDate validators are new in Angular 22 and add minDate/maxDate errors to the field's error map if the date value falls outside the specified range.

Custom Validators

Writing a custom validator is a plain function — no class, no AbstractControl:

import { FormFieldNode } from '@angular/forms/signals';

function noSpaces(field: FormFieldNode<string>): void {
  // Register a validator on this field
  field.addValidator({
    kind: 'noSpaces',
    validate: ({ valueOf }) => {
      const value = valueOf(field);
      return value.includes(' ')
        ? { noSpaces: { message: 'Value must not contain spaces' } }
        : null;
    }
  });
}

// Usage in form schema
protected readonly usernameForm = form(this.userModel, (f) => {
  required(f.username);
  noSpaces(f.username);
});

@if (usernameForm.username().getError('noSpaces'); as err) {
  <div class="error">{{ err.message }}</div>
}

The when Option

Angular 22 standardizes how conditional validators work. All validators and dynamic behaviors (disabled, readonly, hidden) now accept a when option:

protected readonly checkoutForm = form(this.order, (f) => {
  required(f.billingAddress);
  // Only validate shipping address when it differs from billing
  required(f.shippingAddress, {
    when: ({ valueOf }) => valueOf(f.useDifferentShipping)
  });
});

The old syntax of passing the reactive function as a direct argument still works but is now deprecated.

---

Async Validation

Async validation is where Signal Forms really shine compared to Reactive Forms. Rather than dealing with AsyncValidatorFn and Observable chains, you use validateHttp() to wire up an HTTP check declaratively:

import { form, required, validateHttp } from '@angular/forms/signals';

@Component({
  selector: 'app-register',
  imports: [FormField],
  template: `
    <input [formField]="registrationForm.email" type="email" />
    @let emailField = registrationForm.email();
    @if (emailField.isValidating()) {
      <span>Checking availability...</span>
    }
    @if (emailField.touched() && emailField.getError('emailTaken')) {
      <span class="error">This email is already registered</span>
    }
  `
})
export class RegisterComponent {
  protected readonly user = signal({ email: '', password: '' });

  protected readonly registrationForm = form(this.user, (f) => {
    required(f.email);
    validateHttp(f.email, {
      request: (email) => ({
        url: `/api/users/check-email`,
        params: { email: email.value() }
      }),
      error: 'emailTaken',
      debounce: 400
    });
  });
}

The debounce: 400 option tells Angular to wait 400 milliseconds after the last keystroke before sending the HTTP request. This replaces what used to require a custom debounceTime operator in an Observable pipe.

---

Debounce Support

Debouncing in Signal Forms comes in three flavors in Angular 22:

1. Debounce a field's value changes on input:

protected readonly searchForm = form(this.search, (f) => {
  debounce(f.query, 300);
});

2. Debounce only the async validators:

validateHttp(f.username, {
  request: (username) => `/api/users/check?username=${username.value()}`,
  error: 'usernameTaken',
  debounce: 500
});

3. Debounce a field's value changes on blur (new in Angular 22):

protected readonly form = form(this.model, (f) => {
  debounce(f.password, 'blur');
});

The 'blur' option is particularly useful for password fields and other inputs where you want to validate only after the user finishes typing and moves on — rather than on every keystroke.

---

Reactive Forms vs Signal Forms — A Direct Comparison

Aspect	Reactive Forms	Signal Forms
API surface	FormGroup, FormControl, FormBuilder	form(), FieldTree, FormField
RxJS dependency	Required (valueChanges, statusChanges)	None
Subscription management	Manual (takeUntil, unsubscribe)	Automatic
Change detection	Requires manual markForCheck in some cases	Fine-grained via Signals
Validation syntax	Validators.required in constructor	required(f.field) in schema
Async validation	AsyncValidatorFn with Observables	validateHttp() declaratively
Boilerplate	High	Low
Learning curve	Moderate (but familiar)	Low for Signal users
Template ergonomics	form.get('field')?.invalid	formField().invalid()
Debugging	Console logs, DevTools	Signal DevTools, typed errors
Scalability	Good	Excellent
Migration path	None needed	Gradual (compatible with CVA)

The biggest practical difference: with Reactive Forms, you are always managing two things — your data and your form state. With Signal Forms, there is only one source of truth: the Signal you handed to form(). The form state is derived from it, not a separate parallel construct.

---

What is the performance story here?

Worth pausing on this question, because "Signals are faster" is thrown around a lot without much substance.

With Reactive Forms under the Eager (formerly Default) change detection strategy, any event in the application — even one completely unrelated to your form — could trigger a re-check of the entire component tree. Angular 22 makes OnPush the default, which already helps. But inside an OnPush component, if you call markForCheck() to update form state, you mark the entire component for re-check — not just the template nodes that actually changed.

Signal Forms are different because each FormField is a Signal. When the email field's invalid() signal changes, Angular knows to update only the template expressions that read emailField.invalid(). Nothing else re-renders.

This becomes noticeable in large forms with many interdependent fields, or in forms that are part of complex component trees. Fine-grained updates are the answer to forms that feel sluggish as they scale.

---

This is a good moment to ask: are you currently migrating an existing Angular app to use Signals? Or are you starting fresh with Angular 22? Drop a comment below — the migration path is genuinely different depending on your starting point, and I am curious how teams are approaching it.

---

Migration Guidance

Should you migrate everything right now?

Short answer: no.

Reactive Forms are not going anywhere. They are stable, well-tested in production across millions of Angular applications, and will continue to be supported. There is no deprecation notice.

Signal Forms are the recommended path for new forms you are writing today. For existing forms, the migration calculus depends on a few things:

• Forms with complex cross-field dependencies benefit the most — Signal Forms make these relationships explicit and reactive.
• Large, heavily customized forms with many third-party ControlValueAccessor components may take longer, but Angular 22 makes this easier: ControlValueAccessor components are now compatible with formField, and any validation errors they define are propagated into the Signal Forms tree.
• Utility-focused forms (admin tables, settings panels) where the form logic is simple and working fine — migrate these last, or not at all.

Hybrid Approach

The good news in Angular 22 is that FormValueControl — the new interface for custom form components — is now fully compatible with legacy Reactive Forms and Template-Driven Forms. This means you can migrate your custom components first, then migrate your forms progressively, without breaking the parts that are still using the old API.

---

Real-World Example: User Registration Form

Let us build something realistic — a registration form with validation, async email checking, debouncing, and a submit handler.

// registration.model.ts
export interface RegistrationModel {
  username: string;
  email: string;
  password: string;
  confirmPassword: string;
  birthDate: Date | null;
}

// registration.component.ts
import { Component, signal, computed } from '@angular/core';
import {
  form,
  required,
  minLength,
  maxLength,
  email,
  minDate,
  maxDate,
  debounce,
  validateHttp
} from '@angular/forms/signals';
import { FormField } from '@angular/forms/signals';
import { RegistrationModel } from './registration.model';

@Component({
  selector: 'app-registration',
  imports: [FormField],
  template: `
    <form (submit)="onSubmit($event)">

      <!-- Username -->
      <div class="field">
        <label for="username">Username</label>
        <input id="username" [formField]="registrationForm.username" />
        @let username = registrationForm.username();
        @if (username.touched()) {
          @if (username.getError('required')) {
            <p class="error">Username is required</p>
          }
          @if (username.getError('minLength'); as err) {
            <p class="error">At least {{ err.minLength }} characters</p>
          }
          @if (username.getError('maxLength'); as err) {
            <p class="error">No more than {{ err.maxLength }} characters</p>
          }
          @if (username.getError('usernameTaken')) {
            <p class="error">This username is already taken</p>
          }
          @if (username.isValidating()) {
            <p class="info">Checking availability...</p>
          }
        }
      </div>

      <!-- Email -->
      <div class="field">
        <label for="email">Email</label>
        <input id="email" type="email" [formField]="registrationForm.email" />
        @let emailField = registrationForm.email();
        @if (emailField.touched()) {
          @if (emailField.getError('required')) {
            <p class="error">Email is required</p>
          }
          @if (emailField.getError('email')) {
            <p class="error">Enter a valid email address</p>
          }
          @if (emailField.getError('emailTaken')) {
            <p class="error">An account with this email already exists</p>
          }
        }
      </div>

      <!-- Password -->
      <div class="field">
        <label for="password">Password</label>
        <input id="password" type="password" [formField]="registrationForm.password" />
        @let passwordField = registrationForm.password();
        @if (passwordField.touched() && passwordField.getError('minLength'); as err) {
          <p class="error">Password must be at least {{ err.minLength }} characters</p>
        }
      </div>

      <!-- Date of Birth -->
      <div class="field">
        <label for="birthDate">Date of Birth</label>
        <input id="birthDate" type="date" [formField]="registrationForm.birthDate" />
        @let birthField = registrationForm.birthDate();
        @if (birthField.touched()) {
          @if (birthField.getError('required')) {
            <p class="error">Date of birth is required</p>
          }
          @if (birthField.getError('maxDate')) {
            <p class="error">Date of birth cannot be in the future</p>
          }
          @if (birthField.getError('minDate')) {
            <p class="error">Please enter a valid date of birth</p>
          }
        }
      </div>

      <button
        type="submit"
        [disabled]="registrationForm().invalid() || registrationForm().isValidating()"
      >
        Create Account
      </button>

    </form>
  `
})
export class RegistrationComponent {
  private readonly initialModel: RegistrationModel = {
    username: '',
    email: '',
    password: '',
    confirmPassword: '',
    birthDate: null
  };

  protected readonly model = signal<RegistrationModel>(this.initialModel);

  protected readonly registrationForm = form(this.model, (f) => {
    // Username
    required(f.username);
    minLength(f.username, 3);
    maxLength(f.username, 20);
    validateHttp(f.username, {
      request: (field) => ({
        url: '/api/users/check-username',
        params: { username: field.value() }
      }),
      error: 'usernameTaken',
      debounce: 400
    });

    // Email
    required(f.email);
    email(f.email);
    validateHttp(f.email, {
      request: (field) => ({
        url: '/api/users/check-email',
        params: { email: field.value() }
      }),
      error: 'emailTaken',
      debounce: 400
    });

    // Password
    required(f.password);
    minLength(f.password, 8);
    // Debounce on blur for password
    debounce(f.password, 'blur');

    // Date of Birth
    required(f.birthDate);
    minDate(f.birthDate, new Date('1900-01-01'));
    maxDate(f.birthDate, new Date());
  });

  protected onSubmit(event: SubmitEvent): void {
    event.preventDefault();
    this.registrationForm().markAllAsTouched();

    if (this.registrationForm().valid() && !this.registrationForm().isValidating()) {
      const payload = this.registrationForm().value();
      console.log('Submitting:', payload);
      // call your registration service here
    }
  }
}

This is a complete, working registration form. No FormBuilder, no ngOnInit, no subscription cleanup. The async validators for username and email both debounce automatically to avoid a server request on every keystroke.

---

Unit Testing Signal Form Components

Testing Signal Form components is cleaner than testing Reactive Forms because there are fewer moving pieces to mock.

// registration.component.spec.ts
import { ComponentFixture, TestBed } from '@angular/core/testing';
import { RegistrationComponent } from './registration.component';
import { HttpTestingController, provideHttpClientTesting } from '@angular/common/http/testing';
import { provideHttpClient } from '@angular/common/http';

describe('RegistrationComponent', () => {
  let fixture: ComponentFixture<RegistrationComponent>;
  let component: RegistrationComponent;
  let httpMock: HttpTestingController;

  beforeEach(async () => {
    await TestBed.configureTestingModule({
      imports: [RegistrationComponent],
      providers: [
        provideHttpClient(),
        provideHttpClientTesting()
      ]
    }).compileComponents();

    fixture = TestBed.createComponent(RegistrationComponent);
    component = fixture.componentInstance;
    httpMock = TestBed.inject(HttpTestingController);
    fixture.detectChanges();
  });

  afterEach(() => {
    httpMock.verify();
  });

  it('should create the component', () => {
    expect(component).toBeTruthy();
  });

  it('should mark username as invalid when empty and touched', () => {
    const usernameField = component['registrationForm'].username;
    // Mark as touched to trigger validation display
    usernameField().markAsTouched();
    fixture.detectChanges();

    expect(usernameField().invalid()).toBe(true);
    expect(usernameField().getError('required')).toBeTruthy();
  });

  it('should mark username as invalid when too short', () => {
    const form = component['registrationForm'];
    // Update the model to set the username
    component['model'].update(m => ({ ...m, username: 'ab' }));
    form.username().markAsTouched();
    fixture.detectChanges();

    expect(form.username().getError('minLength')).toBeTruthy();
    expect(form.username().getError('minLength')?.minLength).toBe(3);
  });

  it('should mark email as invalid for incorrect format', () => {
    component['model'].update(m => ({ ...m, email: 'not-an-email' }));
    component['registrationForm'].email().markAsTouched();
    fixture.detectChanges();

    expect(component['registrationForm'].email().getError('email')).toBeTruthy();
  });

  it('should show emailTaken error from async validator', async () => {
    component['model'].update(m => ({ ...m, email: '[e-mail]' }));
    fixture.detectChanges();

    // Flush the debounce
    await new Promise(resolve => setTimeout(resolve, 500));
    fixture.detectChanges();

    const req = httpMock.expectOne(r => r.url.includes('/api/users/check-email'));
    req.flush({ taken: true }, { status: 200, statusText: 'OK' });
    fixture.detectChanges();

    expect(component['registrationForm'].email().getError('emailTaken')).toBeTruthy();
  });

  it('should not allow submit when form is invalid', () => {
    const submitSpy = jest.spyOn(console, 'log');
    const formElement = fixture.nativeElement.querySelector('form');
    formElement.dispatchEvent(new Event('submit'));
    fixture.detectChanges();

    expect(submitSpy).not.toHaveBeenCalledWith('Submitting:', expect.anything());
  });

  it('should mark all fields as touched on invalid submit', () => {
    const formElement = fixture.nativeElement.querySelector('form');
    formElement.dispatchEvent(new Event('submit'));
    fixture.detectChanges();

    const usernameField = component['registrationForm'].username();
    expect(usernameField.touched()).toBe(true);
  });
});

A few things to notice in these tests. First, you are testing the Signal directly — form.username().invalid() — which is synchronous and does not require a fake AbstractControl. Second, async validator tests use HttpTestingController the same way you would test an httpResource, which keeps the pattern consistent across your test suite.

---

Key Takeaways

Signal Forms in Angular 22 are not just a cosmetic improvement to Reactive Forms. They represent a fundamentally different model for thinking about form state — one that fits naturally alongside Signals, httpResource, and zoneless change detection.

The three things to take away from this article:

1. The data is the form. You hand a Signal to form() and Angular derives the form state from it. There is no parallel structure to synchronize.

2. Fine-grained reactivity means better performance. Only the template nodes that read a specific Signal re-render when that Signal changes. In large, complex forms this matters a lot.

3. Migration is gradual. Angular 22 ensures ControlValueAccessor and FormValueControl are mutually compatible, so you can migrate piece by piece without rewriting everything at once.

The right time to start using Signal Forms is on the next new form you write. That first one is the fastest way to develop an intuition for how they work.

---

Bonus Tips

Tip 1: Use linkedSignal for editable server data

When your form model comes from a server (loaded via httpResource), use linkedSignal to connect the resource value to a writable Signal that form() can consume:

protected readonly userResource = httpResource<User>(() => `/api/users/${this.userId()}`);

protected readonly editableUser = linkedSignal(() =>
  this.userResource.value() ?? { username: '', email: '' }
);

protected readonly userForm = form(this.editableUser, (f) => {
  required(f.username);
  required(f.email);
});

When the resource reloads, linkedSignal updates editableUser, which updates the form automatically.

Tip 2: Use reloadValidation() for retry logic

If an async validator fails due to a network error, you can retry it programmatically:

protected retryValidation(): void {
  this.registrationForm.email().reloadValidation();
}

This re-runs all async validators on the field and its descendants without requiring any user interaction.

Tip 3: The @Service decorator pairs well with Signal Forms

Angular 22 introduces the @Service() decorator as shorthand for @Injectable({ providedIn: 'root' }). Use it for services that your form components inject:

import { Service } from '@angular/core';

@Service()
export class UserValidationService {
  checkEmail(email: string) {
    // returns Observable or Promise
  }
}

Tip 4: Global debounced() is available for non-form use cases

Angular 22 also ships an experimental debounced() function that works on any Signal, not just form fields. Useful for search inputs that are not part of a form schema:

protected readonly query = signal('');
protected readonly debouncedQuery = debounced(() => this.query(), 300);
protected readonly results = httpResource(() => `/api/search?q=${this.debouncedQuery.value()}`);

---

Recap

Angular 22 Signal Forms are stable. Here is what we covered:

• Reactive Forms carry significant boilerplate and rely on RxJS in ways that do not compose well with the Signal ecosystem
• form() takes a Signal and returns a FieldTree — a deeply nested reactive structure where every property is a Signal with full form state
• FormRoot manages top-level form state; FormField nodes manage per-field state with typed error access via getError()
• Built-in validators like minDate and maxDate are new in Angular 22; the when option standardizes conditional validation
• validateHttp() handles async validation declaratively, with built-in debounce support
• The debounce(field, 'blur') option is new in Angular 22 for blur-triggered debouncing
• Migration is gradual — ControlValueAccessor components work with Signal Forms out of the box
• Testing follows the same pattern as testing other Signal-based code — synchronous and straightforward

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