NgRx SignalStore Patterns

Quick Guide: A SignalStore is an Angular service assembled from features — withState, withComputed, withMethods, withHooks — applied in that order, since each one sees only what came before it. Every update goes through patchState; state is protected from outside writes from v18 and deep-frozen in development from v19, which is why a FormGroup or any other mutable object belongs in withProps rather than in state.

Detailed Resources:

• examples/core.md — signalStore, withState, withComputed, withMethods, withProps, DI and component-scoped stores
• examples/entities.md — withEntities, the CRUD updaters, prependEntity / upsertEntity (v20+)
• examples/effects.md — rxMethod, signalMethod (v19+), side effects
• examples/features.md — signalStoreFeature, custom features, call state, DevTools
• examples/testing.md — unit tests, unprotected(), mocking strategies
• examples/migration.md — migrating from actions, reducers and effects
• reference.md — comparison tables, anti-pattern code, TypeScript recipes, migration steps

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