angular-material
ALWAYS use when working with Angular Material components, CDK, or Material Design in Angular applications.
What this skill does
# @angular/material & @angular/cdk
**Version:** 21.0.3 (Feb 2026)
**Tags:** Material Design, CDK, Components, UI Library
**References:** [Docs](https://material.angular.dev) — components, guides • [CDK Docs](https://material.angular.dev/cdk) • [GitHub Issues](https://github.com/angular/components/issues) • [Changelog](https://github.com/angular/components/blob/main/CHANGELOG.md)
## API Changes
This section documents recent version-specific API changes.
- NEW: Angular Aria — New low-level component library for accessible, headless components that can be styled custom [source](https://blog.angular.dev/announcing-angular-v21)
- NEW: CDK overlays now use browser's built-in popovers for improved accessibility [source](https://blog.angular.dev/announcing-angular-v21)
- NEW: Material Design system tokens — Use utility classes to apply Material tokens directly in templates [source](https://blog.angular.dev/announcing-angular-v21)
- NEW: CDK Drag & Drop improvements — Allow copying items between lists [source](https://blog.angular.dev/announcing-angular-v21)
- NEW: Angular v21 — Full support for new Angular features including zoneless change detection
## Best Practices
- Use standalone components — Import Material components directly without NgModule
```ts
import { Component } from '@angular/core';
import { MatButtonModule } from '@angular/material/button';
import { MatCardModule } from '@angular/material/card';
@Component({
standalone: true,
imports: [MatButtonModule, MatCardModule],
// ...
})
export class ExampleComponent {}
```
- Use CDK for custom components — Use CDK (Component Dev Kit) for behavior primitives like drag-drop, overlays, menus without Material styling
- Use CDK Virtual Scroll for large lists — Improve performance with `cdkVirtualScrollViewport` instead of rendering all items
```html
<cdk-virtual-scroll-viewport itemSize="50" class="viewport">
<div *cdkVirtualFor="let item of items">{{item.name}}</div>
</cdk-virtual-scroll-viewport>
```
- Use `trackBy` with `ngFor` — Prevent unnecessary DOM re-renders
- Customize themes with SCSS — Use Material's theming system for custom colors and typography
- Use `ChangeDetectionStrategy.OnPush` — Improve performance with default change detection strategy
- Follow accessibility guidelines — Use ARIA labels, keyboard navigation, and focus management provided by CDK components
Related in Design
contribute
IncludedLocal-only OSS contribution command center. Auto-refreshes the user's in-flight PR and issue state on invoke so conversations start with full context — no need to brief Claude on what's in flight. Helps the user find issues to contribute to on GitHub, builds per-repo dossiers of what each upstream expects (CLA, DCO, branch convention, AI policy, draft-first, review bots, issue templates), runs deterministic gates before any external action so AI-assisted contributions don't reach maintainers as slop. State is markdown-only: candidate files at ~/.contribute-system/candidates/, repo dossiers at ~/.contribute-system/research/, append-only event log at ~/.contribute-system/log.jsonl. No database, no cloud calls. Use when the user asks about their PRs / issues / contributions, wants to find new work to take on, claim an issue, build/refresh a repo's dossier, or draft a Design Issue or PR. Trigger with "/contribute", "what's my PR status", "find a contribution", "claim issue X", "draft a Design Issue for Y", "refresh dossier for Z".
architectural-analysis
IncludedUser-triggered deep architectural analysis of a codebase or scoped subtree across eight modes — information architecture, data flow, integration points, UI surfaces, interaction patterns, data model, control flow, and failure modes. This skill should be used when the user asks to "diagram this codebase," "map the architecture," "show the data flow," "give me an ERD," "trace control flow," "find the integration points," "verify the layout pattern," "audit the UX architecture," or any similar request whose primary deliverable is mermaid diagrams plus cited reports under docs/architecture/. Dispatches haiku/sonnet sub-agents in parallel for per-mode exploration, then verifies every citation mechanically before any node lands in a diagram. Not for one-off prose explanations of code (use code-explanation) or for high-level system design from scratch (use system-design).
mcp
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react-native-skia
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plaid
IncludedProduct Led AI Development — guides founders from idea to launched product. Six capabilities: Idea (discover a product idea), Validate (pressure-test the idea against fatal flaws, problem reality, competition, and 2-week MVP feasibility), Plan (vision intake + document generation), Design (translate image references into a design.md spec), Launch (go-to-market strategy), and Build (roadmap execution). Use when someone says "PLAID", "plaid idea", "help me find an idea", "product idea", "idea from my business", "idea from my expertise", "plaid validate", "validate my idea", "pressure-test", "is this idea good", "find fatal flaws", "validate the problem", "plan a product", "define my vision", "generate a PRD", "product strategy", "plaid design", "design from image", "translate image to design", "create design.md", "extract design tokens", "plaid launch", "go-to-market", "launch plan", "GTM strategy", "launch playbook", "plaid build", "build the app", "start building", or "execute the roadmap".
nextjs-framer-motion-animations
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