What is angular-idioms?

A guide to common patterns for Angular 17 and newer, Google’s framework for building web applications. It covers standalone components, signals for local state, RxJS for asynchronous data, dependency injection, typed forms, and testing.

Use it when building or reviewing Angular components, managing synchronous or asynchronous data, adding dependency injection, creating typed reactive forms, or setting up tests.

It helps developers structure Angular code consistently and use newer Angular features appropriately. This can reduce confusion when choosing between Angular’s different ways to manage state, forms, and dependencies.

How irahardianto/rugged-gemini configures Claude Code and Gemini CLI

Reuse

Borrowing it

Nothing to install: this file belongs to irahardianto/rugged-gemini. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/irahardianto/rugged-gemini/main/.gemini/skills/angular-idioms/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/irahardianto/rugged-gemini

Made for: Claude Code, Gemini CLI.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/irahardianto/rugged-gemini/angular-idioms/github.svg)](https://agentmods.dev/skills/irahardianto/rugged-gemini/angular-idioms)

Your own site

<a href="https://agentmods.dev/skills/irahardianto/rugged-gemini/angular-idioms"><img src="https://agentmods.dev/badge/skills/irahardianto/rugged-gemini/angular-idioms/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/irahardianto/rugged-gemini/angular-idioms"><img src="https://agentmods.dev/badge/skills/irahardianto/rugged-gemini/angular-idioms.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 417 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00000	$0.00417
Opus 5.5	$0.00000	$0.00167
Sonnet 5.5	$0.00000	$0.00083
Haiku 4.5	$0.00000	$0.00042

Measured 1mo ago against content hash df1d43cb0488, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

angular-idioms scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.gemini/skills/angular-idioms/SKILL.md · 58 lines

What it actually says

Angular Idioms and Patterns

Angular (17+) rewards signals, standalone components, and reactive patterns. Idiomatic Angular = typed, modular, RxJS-aware.

Scope: Angular-specific patterns. For TypeScript: @.gemini/skills/typescript-idioms/SKILL.md.

Standalone Components (Default)

Standalone components — no NgModules for new components:

@Component({
  selector: 'app-task-list',
  standalone: true,
  imports: [CommonModule, TaskCardComponent],
  template: `<app-task-card *ngFor="let task of tasks()" [task]="task" />`
})
export class TaskListComponent {
  tasks = signal<Task[]>([]);
}

Signals (17+)

Signals for synchronous state — prefer over BehaviorSubject for component state.
computed for derived state. effect for side effects.
RxJS for async streams — HTTP, WebSocket, complex event handling.

Dependency Injection

inject() function over constructor injection in standalone components.
Provide at appropriate level — component, route, or root.

Reactive Forms

Reactive forms over template-driven for complex forms.
Typed forms (FormControl<string>) — always.

Testing

Jasmine/Karma or Jest. Angular Testing Library for component tests.

Formatting and Static Analysis

Tool	Purpose	Command
Prettier	Formatting	`npx prettier --write .`
ESLint + angular-eslint	Linting	`npx ng lint`

TypeScript Idioms @.gemini/skills/typescript-idioms/SKILL.md
Frontend Design @.gemini/skills/frontend-design/SKILL.md

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

1mo ago First seen · 58 lines · 0 tokens per session scan A df1d43cb0488

Subscribe to this mod's changes

angular-idioms is a skill published in the GitHub repository irahardianto/rugged-gemini (5 stars, last pushed 5mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 417 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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rugged-gemini: Skill for Claude Code