Modern Angular: Architectures with Standalone Components

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1. @ManfredSteyer Modern Angular: Architectures with Standalone Components ManfredSteyer
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7. @ManfredSteyer Manfred Steyer
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9. @ManfredSteyer NgModules + EcmaScript Modules import { NgModule } from '@angular/core'; import { BrowserModule } from '@angular/platform-browser'; import { AppComponent } from './app.component'; […] @NgModule({ imports: [BrowserModule, OtherModule], declarations: [AppComponent, OtherComponent, OtherDirective], providers: [], bootstrap: [AppComponent], }) export class AppModule {} TypeScript Modules Angular Modules
10. @ManfredSteyer @Component({ standalone: true, imports: [ […], FlightCardComponent, CityPipe, CityValidator, ], selector: 'flight-search', templateUrl: '…' }) export class FlightSearchComponent { […] }
11. @ManfredSteyer @Component({ standalone: true, imports: [ […], FlightCardComponent, CityPipe, CityValidator, ], selector: 'flight-search', templateUrl: '…' }) export class FlightSearchComponent { […] }
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15. @ManfredSteyer Small and Medium Apps: Folder per Feature
16. @ManfredSteyer Medium and Large Apps: Folder per Domain
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20. @ManfredSteyer → @Component({ standalone: true, selector: 'app-root', imports: [ […] TicketsModule, ], templateUrl: '…' }) export class AppComponent { }
21. @ManfredSteyer → @Component({ standalone: true, selector: 'app-root', imports: [ […] TicketsModule, ], templateUrl: '…' }) export class AppComponent { }
22. @ManfredSteyer → @NgModule({ imports: [ FlightCardComponent, ], declarations: [ MyTicketsComponent ], }) export class TicketsModule { }
23. @ManfredSteyer → @NgModule({ imports: [ FlightCardComponent, ], declarations: [ MyTicketsComponent ], }) export class TicketsModule { }
24. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ MyGlobalService, importProvidersFrom(MyModule), ] });
25. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ MyGlobalService, importProvidersFrom(MyModule), ] });
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27. @ManfredSteyer ng g @angular/core:standalone
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30. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ […] ] });
31. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ importProvidersFrom(HttpClientModule), importProvidersFrom(RouterModule.forRoot(APP_ROUTES)), ] });
32. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ provideHttpClient(), provideRouter(APP_ROUTES), ] });
33. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ provideHttpClient( withInterceptors([authInterceptor]), ), provideRouter(APP_ROUTES, withPreloading(PreloadAllModules), withDebugTracing(), ), ] });
34. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ provideLogger(loggerConfig), ] });
35. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ provideLogger(loggerConfig, withColor({ debug: 3 }) ), ] });
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37. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ provideLogger(loggerConfig, withColor({ debug: 3 }) ), ] });
38. @ManfredSteyer export function provideLogger(config: LoggerConfig): Provider[] { […] }
39. @ManfredSteyer export function provideLogger(config: LoggerConfig): Provider[] { return [ LoggerService, { provide: LoggerConfig, useValue: config }, { provide: LogFormatter, useValue: config.formatter }, ]; }
40. @ManfredSteyer export function provideLogger(config: LoggerConfig): Provider[] { return [ LoggerService, { provide: LoggerConfig, useValue: config }, { provide: LogFormatter, useValue: config.formatter }, ]; }
41. @ManfredSteyer export function provideLogger(config: LoggerConfig): EnvironmentProviders { return makeEnvironmentProviders([ LoggerService, { provide: LoggerConfig, useValue: config }, { provide: LogFormatter, useValue: config.formatter }, ]); }
42. @ManfredSteyer export function provideLogger( config: LoggerConfig, ...featues: LoggerFeature[] ): EnvironmentProviders { return makeEnvironmentProviders([ LoggerService, […], features?.map(f => f.providers) ]); }
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45. @ManfredSteyer export const APP_ROUTES: Routes = [ […] { path: 'flight-booking', canActivate: [() => inject(AuthService).isAuthenticated()], component: FlightBookingComponent }, ]
46. @ManfredSteyer export const APP_ROUTES: Routes = [ […] { path: 'flight-booking', canActivate: [() => inject(AuthService).isAuthenticated()], component: FlightBookingComponent }, ]
47. @ManfredSteyer export const APP_ROUTES: Routes = [ […] { path: 'flight-booking', canActivate: [() => inject(AuthService).isAuthenticated()], resolve: { flights: () => inject(FlightService).findAll() }, component: FlightBookingComponent }, ]
48. @ManfredSteyer export const authInterceptor: HttpInterceptorFn = (req, next) => { […] }
49. @ManfredSteyer export const authInterceptor: HttpInterceptorFn = (req, next) => { if (req.url.startsWith('https://[…]/')) { const headers = req.headers.set('Authorization', 'Bearer 12345'); req = req.clone({headers}); } […] }
50. @ManfredSteyer export const authInterceptor: HttpInterceptorFn = (req, next) => { if (req.url.startsWith('https://[…]/')) { const headers = req.headers.set('Authorization', 'Bearer 12345'); req = req.clone({headers}); } return next(req); }
51. @ManfredSteyer export const authInterceptor: HttpInterceptorFn = (req, next) => { if (req.url.startsWith('https://[…]/')) { const headers = req.headers.set('Authorization', 'Bearer 12345'); req = req.clone({headers}); } return next(req).pipe( tap(resp => console.log('response', resp)) ); }
52. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ provideHttpClient( withInterceptors([authInterceptor]), ), ] });
53. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ provideLogger({ level: LogLevel.DEBUG, appenders: [DefaultLogAppender], formatter: (level, cat, msg) => [level, cat, msg].join(';'), }), ] });
54. @ManfredSteyer Free eBook (brand new) ANGULARarchitects.io/standalone-book Standalone Components Download here:
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56. @ManfredSteyer Zone.js: Monkey Patching After Event Handler: Inform Angular CD checks Components all components (default) or selected ones (OnPush)
57. @ManfredSteyer Zone.js: Magic Zone.js: ~100K Cannot patch async/await coarse grained CD e.g. Components are always checked as a whole, even if only a tiny fraction changed
58. @ManfredSteyer Signals!
59. @ManfredSteyer Signals!
60. @ManfredSteyer Signal 4711 Consumer read set notify 4712
61. @ManfredSteyer flights: Flight[] = []; const flights = await this.flightService.findAsPromise(from, to); this.flights = flights; <div *ngFor="let f of flights"> <flight-card [item]="f" /> </div>
62. @ManfredSteyer flights = signal<Flight[]>([]); const flights = await this.flightService.findAsPromise(from, to); this.flights.set(flights); <div *ngFor="let f of flights()"> <flight-card [item]="f" /> </div>
63. @ManfredSteyer Signals are in an Early Stage! It will an option; no need to update existing code!
64. @ManfredSteyer Fine-grained and Zone-less CD Convertible to Observables and vice versa! No need to unsubscribe!
65. @ManfredSteyer Modern Angular: Lightweight Architectures Standalone Components and APIs Functional Services Upcoming: Signals
66. @ManfredSteyer
67. @ManfredSteyer d Slides & Examples Remote Company Workshops and Consulting http://angulararchitects.io