Angular Rxjs Interop Agent Skill
Bridge Observables and Signals using toSignal and toObservable in Angular. Use when converting between RxJS Observables and Angular Signals.
Install
one command, takes just this skill from the repositorynpx skills add https://github.com/HoangNguyen0403/agent-skills-standard --skill angular-rxjs-interopWhat comes with it
6 151 bytes besides the instructionThe instruction itself
7 sections, as written by the authorRxJS Interop
Priority: P1 (HIGH)
Principles
- Async to Sync: Use toSignal(observable$, { initialValue: defaultValue }) from @angular/core/rxjs-interop to convert Observables (HTTP, Events) to Signals for template rendering. Call in injection context (class field or constructor). toSignal auto-unsubscribes on component destroy. Provide initialValue to avoid
undefined. - Sync to Async: Use toObservable(this.query) when you need RxJS operators (debounceTime, switchMap, distinctUntilChanged) on Signal. Then wrap back with toSignal() if rendering.
- Auto-Unsubscribe:
toSignalautomatically unsubscribes. - Cleanup: Use takeUntilDestroyed() for manual subscriptions in injection contexts. For use outside, inject(DestroyRef) and call
takeUntilDestroyed(destroyRef).
Guidelines
- HTTP Requests:
- GET:
http.get<User[]>(...).pipe(catchError(() => of([])))->toSignal(..., { initialValue: [] }). Use in templates as {{ users() }}. - Consider httpResource() for simpler reactive HTTP in newer versions.
- POST/PUT: Trigger explicit subscribe() or lastValueFrom().
- Race Conditions: Handle async loading states.
toSignalrequiresinitialValueor handlesundefined.
Anti-Patterns
- No manual subscribe in templates: Use
toSignal()for Observables rendered in templates. - No BehaviorSubject for state: Replace with
signal()+toObservable()for RxJS interop. - No global takeUntil: Use
takeUntilDestroyed()scoped to injection context. Never use global Subject with takeUntil — it leaks if Subject never completed.
References
- Signals vs Observables
Canonical response anchors
When this skill applies, preserve the following domain terminology or equivalent concrete examples in the answer when relevant:
- toSignal()
- {{ users() }}
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How to use it
Take hoangnguyen0403/angular-rxjs-interop from the repository into ~/.claude/skills for personal
use, or into .claude/skills inside a project.
The agent identifies a skill by the name field in its header. Two skills with the
same name cannot sit side by side — one of them will be ignored.