The New NGRX Signal Store for Angular 3+n Flavors @enterJS 2014 in Darmstadt

1. @ManfredSteyer ManfredSteyer The New NGRX Signal Store for Angular 3+n Flavors
2. @ManfredSteyer Signal as Producer 4711 Consumer read set notify 4712
3. @ManfredSteyer Signal Eventually Zone-less!
4. @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>
5. @ManfredSteyer from = signal('Paris'); to = signal('London'); flightRoute = computed(() => this.from() + ' to ' + this.to());
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11. @ManfredSteyer Component Store "Intention" Signals sync/ async computed(…) computed(…)
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15. @ManfredSteyer Manfred Steyer
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17. @ManfredSteyer @Injectable({ providedIn: 'root' }) export class FlightBookingFacade { private state = signalState({ from: 'Paris', to: 'London', flights: [] as Flight[], basket: {} as Record<number, boolean>, }); readonly flights = this.state.flights; readonly from = this.state.from; […] }
18. @ManfredSteyer @Injectable({ providedIn: 'root' }) export class FlightBookingFacade { […] readonly selected = computed( () => this.flights().filter((f) => this.basket()[f.id]) ); […] }
19. @ManfredSteyer @Injectable({ providedIn: 'root' }) export class FlightBookingFacade { […] updateCriteria(from: string, to: string): void { patchState(this.state, { from, to }) } […] }
20. @ManfredSteyer @Injectable({ providedIn: 'root' }) export class FlightBookingFacade { […] updateCriteria(from: string, to: string): void { patchState(this.state, (state) => ({ from: state.to, to: state.from })); } […] }
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22. @ManfredSteyer export const FlightBookingStore = signalStore( { providedIn: 'root' }, […] );
23. @ManfredSteyer export const FlightBookingStore = signalStore( { providedIn: 'root' }, withState({ from: 'Paris', to: 'London', […] }), […] );
24. @ManfredSteyer export const FlightBookingStore = signalStore( { providedIn: 'root' }, withState({ from: 'Paris', to: 'London', […] }), withComputed(([…]) => ({ […] })), withMethods(([…]) => ({ })), withHooks({ […] }) );
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27. @ManfredSteyer export const FlightBookingStore = signalStore( […] withMethods((state) => { […] return { loadByCriteria: rxMethod<Criteria>((c$) => c$.pipe([…])) }; }), […] );
28. @ManfredSteyer export const FlightBookingStore = signalStore( […] withMethods((state) => { […] return { loadByCriteria: rxMethod<Criteria>((c$) => c$.pipe([…])) }; }), […] );
29. @ManfredSteyer export const FlightBookingStore = signalStore( […] withMethods((state) => { […] return { loadByCriteria: rxMethod<Criteria>((c$) => c$.pipe( filter(c => c.from.length >= 3 && c.to.length >= 3), debounceTime(300), switchMap((c) => flightService.find(c.from, c.to)), tap(flights => patchState(state, { flights })) )) }; }), […] );
30. @ManfredSteyer export const FlightBookingStore = signalStore( […] withMethods((state) => { […] return { loadByCriteria: rxMethod<Criteria>((c$) => c$.pipe( filter(c => c.from.length >= 3 && c.to.length >= 3), debounceTime(300), switchMap((c) => flightService.find(c.from, c.to)), tap(flights => patchState(state, { flights })) )) }; }), […] );
31. @ManfredSteyer export const FlightBookingStore = signalStore( […] withHooks({ onInit({ loadByCriteria, criteria }) { loadByCriteria(criteria); }, }), ); takes: Signal<T>, Observable<T>, T
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33. @ManfredSteyer const BookingStore = signalStore( withEntities<FlightState>() );
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37. @ManfredSteyer Free eBook (6th Edition) ANGULARarchitects.io/book 20 Chapters 4 new Signal Store Chapters
38. @ManfredSteyer Signals: Future of CD Take Care of Data Flow Stores are the Missing Link Signal Store Lightweight Highly Extensible
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40. @ManfredSteyer d Slides & Examples Remote Company Workshops and Consulting http://angulararchitects.io