authoring-typescript

TypeScript coding guidance for safer types, type guards, discriminated unions, and complete switch handling. It also requires checking the project's TypeScript guidelines before changes.

In plain words
What is it for?
Use it when writing or reviewing TypeScript components, utilities, interfaces, types, or enums, including code that checks different union cases.
Why use it?
It helps prevent type-related mistakes and keeps TypeScript changes consistent with the project's rules.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/nvidia/elements/authoring-typescript
Any agent
npx skills add NVIDIA/elements --skill authoring-typescript
Clone the repo
git clone --depth 1 https://github.com/NVIDIA/elements

Made for: Claude Code, Codex.

Per session 104 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 221 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5 $0.00104 $0.00221
Opus 5 $0.00052 $0.00111
Sonnet 5 $0.00021 $0.00044
Haiku 4.5 $0.00010 $0.00022

Measured 2d ago against content hash be9bc7197f79, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

authoring-typescript 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 2d 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.

.agents/skills/authoring-typescript/SKILL.md · 21 lines

What it actually says

Authoring TypeScript

You MUST review @projects/site/src/docs/internal/guidelines/typescript.md before making any TypeScript changes.

When to Use This Skill

  • Writing or modifying component classes, utilities, or type definitions
  • Adding or updating TypeScript interfaces, types, or enums
  • Reviewing code for type safety issues
  • Implementing type guards or discriminated unions
  • Working with union types that require exhaustive checking

References

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.

  1. 2d ago First seen · 21 lines · 104 tokens per session scan A be9bc7197f79

Subscribe to this mod's changes

authoring-typescript is a skill published in the GitHub repository NVIDIA/elements (83 stars, last pushed 2d ago), licensed Apache-2.0. It adds 104 tokens to every session and 221 once invoked, about $0.0005 per session on Opus 5. 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 2026-08-30.

Related

Other skills, from other repositories

design-doc-interviewer

Interview the user to turn a proposed product/engineering change into a structured design document. Use when the user asks to be interviewed, wants help clarifying a design, or wants a design doc produced from Q&A. Emphasize numbered questions (few at a time), capture requirements/constraints/UX/data/logic/testing…

liveloveapp/hashbrown · 77 tokens

ideate

Capture and document a new idea in this repo. Use when the user says things like "help me brainstorm", "I have an idea", or "let's capture this for the future" and wants it recorded in design/ideas/ with a summary, supporting research (repo context + web if useful), and a sketch.

liveloveapp/hashbrown · 70 tokens

beui

Pick and install beUI (@beui) animated React components from the shadcn registry. Use when building motion UI, agent/chat interfaces, toasts, docks, bottom sheets, drawers, popovers, sliders, loaders, 404 pages, or any beui.dev component. Maps user intent to exact @beui install slugs instead of inventing custom…

starc007/ui-components · 78 tokens

beui-pro

Choose, inspect, install, and compose licensed beUI Pro premium React blocks from the authenticated shadcn registry. Use when building or improving landing pages with beUI Pro, installing @beui-pro items, selecting premium heroes, features, pricing, social proof, CTAs, navigation, footers, or other page sections, or…

starc007/ui-components · 83 tokens

ui-development

Build UI pages and extensions for Falcon Foundry apps using React or Vue with the Shoelace design system and Foundry-JS. TRIGGER when user asks to "create a UI page", "build a UI extension", "add a Shoelace component", "call an API from the UI", runs foundry ui pages create or foundry ui run, or needs help with Vite…

CrowdStrike/foundry-skills · 113 tokens

vue-application-structure

Establishes or reviews the directory layout, component conventions, composable design, Pinia store structure, and Vue Router configuration for a Vue 3 TypeScript application. Invoked when the user asks to structure a Vue app, set up the project layout, or review Vue architecture.

soulcodex/agentic · 63 tokens