Angular v20+ でカスタムディレクティブを作成し、DOM操作と振る舞いの拡張を実現します。
このスキルは、Angular v20+ においてカスタムディレクティブを作成するためのものです。属性ディレクティブによる要素の振る舞いや見た目の変更、構造ディレクティブによるポータルやオーバーレイの実装、ホストディレクティブによるコンポーネント合成など、再利用可能なDOM操作ロジックの作成を支援します。特に、@if/@for/@switch などの組み込み制御フローで十分なケースではカスタム構造ディレクティブを使わないように注意を促します。analogjs/angular-directives は主要なAngularプロジェクトと互換性があり、標準的なディレクティブAPIに従います。このスキールは、テンプレート内での直接DOM操作や、複数コンポーネントにまたがる共通の振る舞いを実装したい開発者に最適です。
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Angular v20+ でカスタムディレクティブを作成し、DOM操作と振る舞いの拡張を行います。属性ディレクティブ（要素の振る舞いや外観を変更）、構造ディレクティブ（ポータルやオーバーレイ用）、ホストディレクティブ（コンポジション用）の作成に使用します。トリガーは、再利用可能なDOMの振る舞いを作成するとき、要素の機能を拡張するとき、または複数のコンポーネントにまたがる振る舞いを合成するときです。注意：制御フローにはネイティブの @if / @for / @switch を使用し、カスタム構造ディレクティブは使用しないでください。
This repo contains 9 individual skills — each has its own dedicated page.
Create modern Angular standalone components following v20+ best practices. Use for building UI components with signal-based inputs/outputs, OnPush change detection, host bindings, content projection, and lifecycle hooks. Triggers on component creation, refactoring class-based inputs to signals, adding host bindings, or implementing accessible interactive components.
Implement dependency injection in Angular v20+ using inject(), injection tokens, and provider configuration. Use for service architecture, providing dependencies at different levels, creating injectable tokens, and managing singleton vs scoped services. Triggers on service creation, configuring providers, using injection tokens, or understanding DI hierarchy.
Build signal-based forms in Angular v21+ using the new Signal Forms API. Use for form creation with automatic two-way binding, schema-based validation, field state management, and dynamic forms. Triggers on form implementation, adding validation, creating multi-step forms, or building forms with conditional fields. Signal Forms are experimental but recommended for new Angular projects. Don't use for template-driven forms without signals or third-party form libraries like Formly or ngx-formly.
Implement HTTP data fetching in Angular v20+ using resource(), httpResource(), and HttpClient. Use for API calls, data loading with signals, request/response handling, and interceptors. Triggers on data fetching, API integration, loading states, error handling, or converting Observable-based HTTP to signal-based patterns.
Implement routing in Angular v20+ applications with lazy loading, functional guards, resolvers, and route parameters. Use for navigation setup, protected routes, route-based data loading, and nested routing. Triggers on route configuration, adding authentication guards, implementing lazy loading, or reading route parameters with signals.
Implement signal-based reactive state management in Angular v20+. Use for creating reactive state with signal(), derived state with computed(), dependent state with linkedSignal(), and side effects with effect(). Triggers on state management questions, converting from BehaviorSubject/Observable patterns to signals, or implementing reactive data flows.
Implement server-side rendering and hydration in Angular v20+ using @angular/ssr. Use for SSR setup, hydration strategies, prerendering static pages, and handling browser-only APIs. Triggers on SSR configuration, fixing hydration mismatches, prerendering routes, or making code SSR-compatible.
Write unit and integration tests for Angular v20+ applications using Vitest or Jasmine with TestBed and modern testing patterns. Use for testing components with signals, OnPush change detection, services with inject(), and HTTP interactions. Triggers on test creation, testing signal-based components, mocking dependencies, or setting up test infrastructure. Don't use for E2E testing with Cypress or Playwright, or for testing non-Angular JavaScript/TypeScript code.
Use Angular CLI and development tools effectively in Angular v20+ projects. Use for project setup, code generation, building, testing, and configuration. Triggers on creating new projects, generating components/services/modules, configuring builds, running tests, or optimizing production builds. Don't use for Nx workspace commands, custom Webpack configurations, or non-Angular CLI build systems like Vite standalone or esbuild direct usage.
Send and manage iMessages via BlueBubbles, including attachments, tapbacks, edits, replies, and groups.
Control Eight Sleep pods (status, temperature, alarms, schedules).
BluOS CLI (blu) for discovery, playback, grouping, and volume.
Create, search, and manage Bear notes via grizzly CLI.
Capture frames or clips from RTSP/ONVIF cameras.
Search GIF providers with CLI/TUI, download results, and extract stills/sheets.