Lightweight Architectures: With Angular's Latest Innovations

Transcript

1. @ManfredSteyer Lightweight Architectures With Angular's Latest Innovations ManfredSteyer
2. @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 { […] }
12. @ManfredSteyer It looks like you want to use NgIfDirective and MyComponent. Shall I import it for you?
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16. @ManfredSteyer Small and Medium Apps: Folder per Feature
17. @ManfredSteyer Your Public APIs: Barrels // index.ts == Public API export * from './flight-booking.routes';
18. @ManfredSteyer Medium and Large Apps: Folder per Domain
19. @ManfredSteyer Restricting Access b/w Domains, etc. on a library basis
20. @ManfredSteyer Restricting Access b/w Domains, etc. on a folder basis Credits to: Rainer Hahnekamp, AngularArchitects @softarc/eslint-plugin-sheriff
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25. @ManfredSteyer → @Component({ standalone: true, selector: 'app-root', imports: [ […] TicketsModule, ], templateUrl: '…' }) export class AppComponent { }
26. @ManfredSteyer → @Component({ standalone: true, selector: 'app-root', imports: [ […] TicketsModule, ], templateUrl: '…' }) export class AppComponent { }
27. @ManfredSteyer → @NgModule({ imports: [ FlightCardComponent, ], declarations: [ MyTicketsComponent ], }) export class TicketsModule { }
28. @ManfredSteyer → @NgModule({ imports: [ FlightCardComponent, ], declarations: [ MyTicketsComponent ], }) export class TicketsModule { }
29. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ MyGlobalService, importProvidersFrom(MyModule), ] });
30. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ MyGlobalService, importProvidersFrom(MyModule), ] });
31. @ManfredSteyer
32. @ManfredSteyer ng g @angular/core:standalone
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34. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ […] ] });
35. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ importProvidersFrom(HttpClientModule), importProvidersFrom(RouterModule.forRoot(APP_ROUTES)), ] });
36. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ provideHttpClient(), provideRouter(APP_ROUTES), ] });
37. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ provideHttpClient( withInterceptors([authInterceptor]), ), provideRouter(APP_ROUTES, withPreloading(PreloadAllModules), withDebugTracing(), ), ] });
38. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ provideLogger(loggerConfig), ] });
39. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ provideLogger(loggerConfig, withColor({ debug: 3 }) ), ] });
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41. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ provideLogger(loggerConfig, withColor({ debug: 3 }) ), ] });
42. @ManfredSteyer export function provideLogger(config: LoggerConfig): Provider[] { […] }
43. @ManfredSteyer export function provideLogger(config: LoggerConfig): Provider[] { return [ LoggerService, { provide: LoggerConfig, useValue: config }, { provide: LogFormatter, useValue: config.formatter }, ]; }
44. @ManfredSteyer export function provideLogger(config: LoggerConfig): Provider[] { return [ LoggerService, { provide: LoggerConfig, useValue: config }, { provide: LogFormatter, useValue: config.formatter }, ]; }
45. @ManfredSteyer export function provideLogger(config: LoggerConfig): EnvironmentProviders { return makeEnvironmentProviders([ LoggerService, { provide: LoggerConfig, useValue: config }, { provide: LogFormatter, useValue: config.formatter }, ]); }
46. @ManfredSteyer export function provideLogger( config: LoggerConfig, ...featues: LoggerFeature[] ): EnvironmentProviders { return makeEnvironmentProviders([ LoggerService, […], features?.map(f => f.providers) ]); }
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48. @ManfredSteyer export const APP_ROUTES: Routes = [ […] { path: 'flight-booking', canActivate: [() => inject(AuthService).isAuthenticated()], component: FlightBookingComponent }, ]
49. @ManfredSteyer export const APP_ROUTES: Routes = [ […] { path: 'flight-booking', canActivate: [() => inject(AuthService).isAuthenticated()], component: FlightBookingComponent }, ]
50. @ManfredSteyer export const APP_ROUTES: Routes = [ […] { path: 'flight-booking', canActivate: [() => inject(AuthService).isAuthenticated()], resolve: { flights: () => inject(FlightService).findAll() }, component: FlightBookingComponent }, ]
51. @ManfredSteyer export const authInterceptor: HttpInterceptorFn = (req, next) => { […] }
52. @ManfredSteyer export const authInterceptor: HttpInterceptorFn = (req, next) => { if (req.url.startsWith('https://[…]/')) { const headers = req.headers.set('Authorization', 'Bearer 12345'); req = req.clone({headers}); } […] }
53. @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); }
54. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ provideHttpClient( withInterceptors([authInterceptor]), ), ] });
55. @ManfredSteyer bootstrapApplication(AppComponent, { providers: [ provideLogger({ level: LogLevel.DEBUG, appenders: [DefaultLogAppender], formatter: (level, cat, msg) => [level, cat, msg].join(';'), }), ] });
56. @ManfredSteyer Free eBook (brand new) ANGULARarchitects.io/standalone Standalone Components Download here:
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58. @ManfredSteyer Zone.js: Monkey Patching After Event Handler: Inform Angular CD Checks Components all components (default) or selected ones (OnPush)
59. @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
60. @ManfredSteyer Signals!
61. @ManfredSteyer Signals!
62. @ManfredSteyer Signal as Producer 4711 Consumer read set notify 4712
63. @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>
64. @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>
65. @ManfredSteyer Fine-grained and Zone-less CD Convertible to Observables and vice versa! No need to unsubscribe! No need to update code!
66. @ManfredSteyer
67. @ManfredSteyer Modern Angular: Lightweight Architectures Standalone Components and APIs Functional Services Upcoming: Signals
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69. @ManfredSteyer d Slides & Examples Remote Company Workshops and Consulting http://angulararchitects.io