routing-performance-implementation

# Routing & Performance Implementation Skill

## Quick Start

### Basic Routing
```typescript
import { NgModule } from '@angular/core';
import { RouterModule, Routes } from '@angular/router';
import { HomeComponent, AboutComponent, NotFoundComponent } from './components';

const routes: Routes = [
  { path: '', component: HomeComponent },
  { path: 'about', component: AboutComponent },
  { path: '**', component: NotFoundComponent }
];

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule { }
```

### Navigation
```typescript
import { Component } from '@angular/core';
import { Router } from '@angular/router';

@Component({
  template: `
    <button (click)="goHome()">Home</button>
    <a routerLink="/about">About</a>
    <a routerLink="/users" [queryParams]="{ tab: 'active' }">Users</a>
  `
})
export class NavComponent {
  constructor(private router: Router) {}

  goHome() {
    this.router.navigate(['/']);
  }
}
```

### Route Parameters
```typescript
const routes: Routes = [
  { path: 'users/:id', component: UserDetailComponent },
  { path: 'users/:id/posts/:postId', component: PostDetailComponent }
];

// Component
@Component({...})
export class UserDetailComponent {
  userId!: string;

  constructor(private route: ActivatedRoute) {
    this.route.params.subscribe(params => {
      this.userId = params['id'];
    });
  }
}

// Or with snapshot
ngOnInit() {
  const id = this.route.snapshot.params['id'];
}
```

## Lazy Loading

### Feature Modules with Lazy Loading
```typescript
// app-routing.module.ts
const routes: Routes = [
  { path: '', component: HomeComponent },
  {
    path: 'users',
    loadChildren: () => import('./users/users.module').then(m => m.UsersModule)
  },
  {
    path: 'products',
    loadChildren: () => import('./products/products.module').then(m => m.ProductsModule)
  }
];

// users/users-routing.module.ts
const routes: Routes = [
  { path: '', component: UserListComponent },
  { path