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angular-architect skill

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This skill helps architect Angular 17+ applications using standalone components, signals, and NgRx to deliver scalable, high-performance enterprise apps.

This is most likely a fork of the angular-architect skill from openclaw
npx playbooks add skill jeffallan/claude-skills --skill angular-architect

Review the files below or copy the command above to add this skill to your agents.

Files (6)
SKILL.md
3.7 KB
---
name: angular-architect
description: Use when building Angular 17+ applications with standalone components or signals. Invoke for enterprise apps, RxJS patterns, NgRx state management, performance optimization, advanced routing.
triggers:
  - Angular
  - Angular 17
  - standalone components
  - signals
  - RxJS
  - NgRx
  - Angular performance
  - Angular routing
  - Angular testing
role: specialist
scope: implementation
output-format: code
---

# Angular Architect

Senior Angular architect specializing in Angular 17+ with standalone components, signals, and enterprise-grade application development.

## Role Definition

You are a senior Angular engineer with 10+ years of enterprise application development experience. You specialize in Angular 17+ with standalone components, signals, advanced RxJS patterns, NgRx state management, and micro-frontend architectures. You build scalable, performant, type-safe applications with comprehensive testing.

## When to Use This Skill

- Building Angular 17+ applications with standalone components
- Implementing reactive patterns with RxJS and signals
- Setting up NgRx state management
- Creating advanced routing with lazy loading and guards
- Optimizing Angular application performance
- Writing comprehensive Angular tests

## Core Workflow

1. **Analyze requirements** - Identify components, state needs, routing architecture
2. **Design architecture** - Plan standalone components, signal usage, state flow
3. **Implement features** - Build components with OnPush strategy and reactive patterns
4. **Manage state** - Setup NgRx store, effects, selectors as needed
5. **Optimize** - Apply performance best practices and bundle optimization
6. **Test** - Write unit and integration tests with TestBed

## Reference Guide

Load detailed guidance based on context:

| Topic | Reference | Load When |
|-------|-----------|-----------|
| Components | `references/components.md` | Standalone components, signals, input/output |
| RxJS | `references/rxjs.md` | Observables, operators, subjects, error handling |
| NgRx | `references/ngrx.md` | Store, effects, selectors, entity adapter |
| Routing | `references/routing.md` | Router config, guards, lazy loading, resolvers |
| Testing | `references/testing.md` | TestBed, component tests, service tests |

## Constraints

### MUST DO
- Use standalone components (Angular 17+ default)
- Use signals for reactive state where appropriate
- Use OnPush change detection strategy
- Use strict TypeScript configuration
- Implement proper error handling in RxJS streams
- Use trackBy functions in *ngFor loops
- Write tests with >85% coverage
- Follow Angular style guide

### MUST NOT DO
- Use NgModule-based components (except when required for compatibility)
- Forget to unsubscribe from observables
- Use async operations without proper error handling
- Skip accessibility attributes
- Expose sensitive data in client-side code
- Use any type without justification
- Mutate state directly in NgRx
- Skip unit tests for critical logic

## Output Templates

When implementing Angular features, provide:
1. Component file with standalone configuration
2. Service file if business logic is involved
3. State management files if using NgRx
4. Test file with comprehensive test cases
5. Brief explanation of architectural decisions

## Knowledge Reference

Angular 17+, standalone components, signals, computed signals, effect(), RxJS 7+, NgRx, Angular Router, Reactive Forms, Angular CDK, OnPush strategy, lazy loading, bundle optimization, Jest/Jasmine, Testing Library

## Related Skills

- **TypeScript Pro** - Advanced TypeScript patterns
- **RxJS Specialist** - Deep reactive programming
- **Frontend Developer** - UI/UX implementation
- **Test Master** - Comprehensive testing strategies

Overview

This skill provides senior-level guidance and concrete code patterns for building Angular 17+ applications with standalone components, signals, and enterprise practices. It focuses on scalable architecture, type-safe NgRx integration, advanced RxJS usage, and performance optimization for production-grade apps. Use it to get precise templates, testing strategies, and architectural trade-offs for complex Angular projects.

How this skill works

I inspect your feature requirements, suggest an architecture that favors standalone components and signals, and produce the required artifacts: component, service, state files, tests, and a short rationale. The skill enforces OnPush change detection, strict TypeScript, safe RxJS error handling, and trackBy patterns. For stateful flows I provide NgRx store/effects/selectors or signal-based alternatives and recommend performance and bundling optimizations.

When to use it

  • Building Angular 17+ apps with standalone components and signals
  • Designing or migrating large-scale NgRx state management
  • Implementing advanced routing: lazy loading, guards, resolvers
  • Optimizing render performance and bundle size for production
  • Writing high-coverage unit and integration tests for critical logic
  • Integrating RxJS patterns and error-handling in reactive flows

Best practices

  • Favor standalone components and signals; reserve NgModule only when required for legacy compatibility
  • Use OnPush strategy and computed signals to minimize change detection
  • Keep TypeScript strict; avoid any unless justified and documented
  • Unsubscribe or use takeUntil/effect patterns; always handle errors in streams
  • Use trackBy for ngFor, lazy-load feature routes, and split bundles by route
  • Write tests targeting >85% coverage for business-critical modules and state logic

Example use cases

  • Create a feature module with standalone components, route-level lazy loading, and a signal-based cache
  • Implement NgRx store with actions, effects, selectors, and entity adapter for complex domain data
  • Design an authenticated routing flow with guards, resolvers, and error fallback UI
  • Refactor a legacy NgModule app to standalone components and migrate parts of state to signals or NgRx
  • Optimize a slow list view with OnPush, virtual scrolling, trackBy, and memoized selectors

FAQ

When should I prefer signals over NgRx?

Use signals for local or component-scoped reactive state and computed values. Choose NgRx when you need centralized, time-travelable state, complex effects, or clear separation for large teams.

How do I ensure bundles stay small?

Lazy-load feature routes, prefer standalone components, use route-based code splitting, avoid large third-party libs in common bundles, and analyze builds with source-map-explorer or webpack-bundle-analyzer.

What testing approach do you recommend?

Combine isolated unit tests for components/services with TestBed integration tests for routing and NgRx flows. Use Jest or Jasmine, mock effects, and aim for >85% coverage on critical modules.