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@ManfredSteyer @ManfredSteyer Migration to Signals, Resource API, and NgRx Signal Store Manfred Steyer, ANGULARarchitects.io

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@ManfredSteyer Application Code as a Script

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@ManfredSteyer Signals => Reactive Programming => Paradigm Shift!

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@ManfredSteyer Marble Run

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@ManfredSteyer Marble Run Data Binding

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@ManfredSteyer Agenda #1 Signals #2 Resource API #3 Effects #4 SignalStore #5 Mutation API #6 Signal Forms

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@ManfredSteyer About me… Manfred Steyer, ANGULARarchitects.io (Remote) Angular Workshops and Consulting Google Developer Expert for Angular Blog, Books, Articles, and Talks about Angular Manfred Steyer

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@ManfredSteyer @ManfredSteyer 8 Signals 101

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@ManfredSteyer Signals: Simple Reactivity Signal as Producer 4711 Consumer read set notify 4712

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@ManfredSteyer Component With Signals flights = signal([]); const flights = await this.flightService.findAsPromise(from, to); this.flights.set(flights);

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@ManfredSteyer @ManfredSteyer 11 DEMO

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@ManfredSteyer @ManfredSteyer 12 Race Conditions

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@ManfredSteyer Resource Prevents Race Conditions Pancakes Sacher Cake Ice Cream Pancakes

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@ManfredSteyer Resource Prevents Race Conditions Pancakes Sacher Cake Ice Cream Pancakes „switchMap semantics“

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@ManfredSteyer @ManfredSteyer 15 Effects

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@ManfredSteyer Connecting Reactive and Imperative World

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@ManfredSteyer

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@ManfredSteyer @ManfredSteyer 18 • Drawing on a canvas • Manual DOM manipulations • Logging • Synching with LocalStore Ideal-typical Tasks Rendering (and similar tasks …) Stuff, you cannot do with data binding

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@ManfredSteyer @ManfredSteyer 19 DEMO

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@ManfredSteyer @ManfredSteyer 20 Architecture Rule #1 Derive state where possible (sync: computed, async: Resource API) Architecture Rule #2 Avoid effects for triggering business logic! Architecture Rule #3 Reactive Helpers (e.g., Resource API) streamline your reactive flow Architecture Rules

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@ManfredSteyer @ManfredSteyer 21 Stores

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@ManfredSteyer Stores Streamline Reactive Flow Component Store "Intention" Signal sync/ async computed() computed()

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@ManfredSteyer @ManfredSteyer 23 Two Reasons for a Store Manage State Streamline Dataflow

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@ManfredSteyer

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@ManfredSteyer

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@ManfredSteyer

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@ManfredSteyer @ManfredSteyer 27 NGRX Signal Store

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@ManfredSteyer NGRX Signal Store export const FlightBookingStore = signalStore( { providedIn: 'root' }, […] );

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@ManfredSteyer NGRX Signal Store export const FlightBookingStore = signalStore( { providedIn: 'root' }, withState({ from: 'Paris', to: 'London', […] }), […] );

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@ManfredSteyer NGRX Signal Store export const FlightBookingStore = signalStore( { providedIn: 'root' }, withState({ from: 'Paris', to: 'London', […] }), withComputed(([…]) => ({ […] })), withMethods(([…]) => ({ })), withHooks({ […] }) );

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@ManfredSteyer Extensions export const FlightBookingStore = signalStore( { providedIn: 'root' }, withState({ from: 'Paris', to: 'London', […] }), withComputed(([…]) => ({ […] })), withMethods(([…]) => ({ })), withHooks({ […] }), withResource([…]}), withDevtools([…]}), withUndoRedo(), );

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@ManfredSteyer @ManfredSteyer 32 DEMO

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@ManfredSteyer @ManfredSteyer 33 Modern Angular 2nd Edition angularArchitects.io/modern Free eBook

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@ManfredSteyer Summary Signals: Reactive Programming Derive State Effects: Not for Biz Logic Stores Streamline Reactivity

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@ManfredSteyer Marble Run

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@ManfredSteyer Marble Run Data Binding

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@ManfredSteyer 37 [Social Media] Manfred Steyer [web] ANGULARarchitects.io Manfred Steyer @ Manfred Steyer Slides & Examples Remote Company Workshops and Consulting http://angulararchitects.io