Angular Toast Notifications: Modern vs Legacy Implementation

Both @ngneat/hot-toast and ngx-toastr solve the same problem — showing temporary feedback messages to users without blocking their workflow. However, they reflect different eras of Angular development. ngx-toastr represents the classic Module-based approach, while @ngneat/hot-toast embraces the modern Standalone and Functional API style. Let's compare how they handle setup, usage, and customization.

🛠️ Setup and Configuration

@ngneat/hot-toast uses functional providers, which fits cleanly into modern app.config.ts files.

• You configure it once using provideHotToastConfig().
• No need for NgModules in most cases.

// app.config.ts
import { provideHotToastConfig } from '@ngneat/hot-toast';

export const appConfig: ApplicationConfig = {
  providers: [
    provideHotToastConfig({
      position: 'top-center',
      duration: 3000
    })
  ]
};

ngx-toastr relies on traditional NgModules and requires BrowserAnimationsModule.

• You must import ToastrModule.forRoot() in your app module.
• Requires extra setup for standalone apps.

// app.module.ts
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import { ToastrModule } from 'ngx-toastr';

@NgModule({
  imports: [
    BrowserAnimationsModule,
    ToastrModule.forRoot({
      positionClass: 'toast-top-center',
      timeOut: 3000
    })
  ]
})
export class AppModule {}

📢 Triggering Notifications

@ngneat/hot-toast uses a simple service object imported directly.

• You call methods like toast.success() anywhere in your code.
• No need to inject a service into constructors.

// component.ts
import { toast } from '@ngneat/hot-toast';

function saveData() {
  toast.success('Data saved successfully');
  // Or with options
  toast.error('Failed to save', { duration: 5000 });
}

ngx-toastr requires injecting the ToastrService into your class.

• You call methods on the injected instance.
• More boilerplate but explicit dependencies.

// component.ts
import { ToastrService } from 'ngx-toastr';

@Component({ ... })
export class MyComponent {
  constructor(private toastr: ToastrService) {}

  saveData() {
    this.toastr.success('Data saved successfully');
    // Or with options
    this.toastr.error('Failed to save', 'Error', { timeOut: 5000 });
  }
}

🎨 Custom Content and Components

@ngneat/hot-toast allows passing Angular components directly to the toast.

• You can pass a component class and data inputs.
• Great for complex notifications with buttons or forms.

// component.ts
import { toast } from '@ngneat/hot-toast';
import { CustomComponent } from './custom.component';

function showCustom() {
  toast.show(CustomComponent, {
    data: { message: 'Action required' },
    duration: 10000
  });
}

ngx-toastr typically uses TemplateRef or ComponentPortal.

• You often need to define a template in your HTML first.
• More verbose for custom UIs.

// component.ts
import { ToastrService } from 'ngx-toastr';
import { TemplateRef } from '@angular/core';

@Component({ ... })
export class MyComponent {
  constructor(private toastr: ToastrService) {}

  showCustom(templateRef: TemplateRef<any>) {
    this.toastr.show(templateRef, 'Custom Title', {
      toastClass: 'custom-toast'
    });
  }
}

📍 Positioning and Styling

@ngneat/hot-toast handles positioning via config objects.

• Uses simple string values like 'top-center' or 'bottom-right'.
• Styles are easily overridden via the style option.

// component.ts
import { toast } from '@ngneat/hot-toast';

toast.success('Moved to bottom', {
  position: 'bottom-center',
  style: { background: 'blue', color: 'white' }
});

ngx-toastr uses CSS classes for positioning.

• You set classes like 'toast-top-right' in config.
• Requires global CSS setup for custom themes.

// component.ts
import { ToastrService } from 'ngx-toastr';

this.toastr.success('Moved to bottom', '', {
  positionClass: 'toast-bottom-center',
  toastClass: 'blue-theme'
});

⏳ Loading States

@ngneat/hot-toast has built-in loading state management.

• You can start a loader and resolve it later by ID.
• Perfect for async operations like API calls.

// component.ts
import { toast } from '@ngneat/hot-toast';

async function loadData() {
  const loadingId = toast.load('Loading data...');
  
  try {
    await api.fetch();
    toast.success('Done', { id: loadingId });
  } catch {
    toast.error('Failed', { id: loadingId });
  }
}

ngx-toastr does not have built-in loading state transitions.

• You must manually hide one toast and show another.
• Requires tracking IDs manually if you want to replace them.

// component.ts
import { ToastrService } from 'ngx-toastr';

async function loadData() {
  const loading = this.toastr.info('Loading data...');
  
  try {
    await api.fetch();
    this.toastr.remove(loading.toastId);
    this.toastr.success('Done');
  } catch {
    this.toastr.remove(loading.toastId);
    this.toastr.error('Failed');
  }
}

🌱 Similarities: Shared Ground

While the implementation differs, both libraries share core goals and capabilities.

1. 📦 Standard Notification Types

• Both support Success, Error, Warning, and Info out of the box.
• Colors and icons are pre-configured for each type.

// @ngneat/hot-toast
toast.success('OK');
toast.error('Fail');

// ngx-toastr
this.toastr.success('OK');
this.toastr.error('Fail');

2. ⏱️ Auto-Dismissal

• Both allow setting a duration before the toast disappears.
• Users can often click to dismiss early.

// @ngneat/hot-toast
toast.show('Message', { duration: 4000 });

// ngx-toastr
this.toastr.show('Message', '', { timeOut: 4000 });

3. 🚫 Disable Auto-Close

• Both support persistent toasts that stay until clicked.
• Useful for critical errors requiring user acknowledgment.

// @ngneat/hot-toast
toast.error('Critical', { duration: 0 });

// ngx-toastr
this.toastr.error('Critical', '', { disableTimeOut: true });

4. ♿ Accessibility

• Both use ARIA live regions to announce messages to screen readers.
• Ensures compliance with basic accessibility standards.

// Both handle this internally via role="alert"
// No extra code needed for basic support

📊 Summary: Key Differences

💡 The Big Picture

@ngneat/hot-toast is like a modern utility belt 🎒 — lightweight, easy to grab, and designed for speed. It removes boilerplate and fits naturally into new Angular projects. Choose this for greenfield development where you want less configuration and more code.

ngx-toastr is like a heavy-duty toolbox 🧰 — robust, familiar, and everywhere. It has been around for years and works reliably in complex enterprise apps. Choose this for maintaining existing systems or if your team prefers traditional dependency injection patterns.

Final Thought: Both libraries will get the job done, but @ngneat/hot-toast reduces friction for modern Angular developers. If you are starting fresh, the simpler API and standalone support make it the logical choice — unless you are already locked into the ngx-toastr ecosystem.