Angular

When to Use

• Enterprise Applications: Strict structure, opinionated, and "batteries-included" (Router, Forms, HTTP).
• Large Teams: TypeScript and strict patterns make it easier for large teams to collaborate.
• Long-term Maintenance: Angular's update story is excellent (CLI automates migrations).

Quick Start (Signals)

import { Component, signal, computed } from "@angular/core";

@Component({
  selector: "app-counter",
  standalone: true,
  template: `
    <p>Count: {{ count() }}</p>
    <p>Double: {{ double() }}</p>
    <button (click)="increment()">Increment</button>
  `,
})
export class CounterComponent {
  count = signal(0);
  double = computed(() => this.count() * 2);

  increment() {
    this.count.update((c) => c + 1);
  }
}

Core Concepts

Signals

Zone.js

Standalone Components

NgModule

Deferrable Views (

@defer

)

@defer (on viewport) {
<heavy-chart />
} @placeholder {
<p>Loading...</p>
}

Best Practices (2025)

• Use Signals: Prefer

  signal()

  over

  BehaviorSubject

  for component state.
• Use

  inject()

  : Prefer the

  inject(Service)

  function over constructor dependency injection.
• Go Zoneless: Enable

  provideExperimentalZonelessChangeDetection()

  for better performance.

• Don't use

  NgModule

  : Unless maintaining legacy code.
• Don't use

  CommonModule

  : Use new control flow syntax (

  @if

  ,

  @for

  ) instead of

  *ngIf

  ,

  *ngFor

  .

References

• Angular Documentation