What is react-native?

A guide for building React Native mobile apps with Expo, file-based navigation, modern native architecture, optimized lists, animations, state management, and store deployment. React Native lets developers build mobile apps with React, while Expo provides supporting tools and services.

Use it to start or improve an Expo app, set up routes and deep links, manage local and server data, optimize lists and images, add animations or push notifications, and prepare App Store or Play Store releases.

It provides project conventions for navigation, performance, images, notifications, and deployment instead of leaving each choice open. It also highlights compatibility and optimization checks for mobile apps.

react-native — Skill for Claude Code by EliasOulkadi/shokunin

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.

Any agent

npx skills add EliasOulkadi/shokunin --skill react-native

Clone the repo

git clone --depth 1 https://github.com/EliasOulkadi/shokunin

Made for: Claude Code.

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/eliasoulkadi/shokunin/react-native/github.svg)](https://agentmods.dev/skills/eliasoulkadi/shokunin/react-native)

Your own site

<a href="https://agentmods.dev/skills/eliasoulkadi/shokunin/react-native"><img src="https://agentmods.dev/badge/skills/eliasoulkadi/shokunin/react-native/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/eliasoulkadi/shokunin/react-native"><img src="https://agentmods.dev/badge/skills/eliasoulkadi/shokunin/react-native.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 55 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,937 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. Third-party audits

NVIDIA SkillSpector warn 7 Sept 2026

SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

medium MCP Rug Pull · line 58
npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.

Fix: Pin the version: npx @scope/[email protected]

How audits are shown

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	$0.00055	$0.02937
Opus 5.5	$0.00022	$0.01175
Sonnet 5.5	$0.00011	$0.00587
Haiku 4.5	$0.00006	$0.00294

Measured 1mo ago against content hash 210f12db772c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

react-native 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.

.pack/skills/react-native/SKILL.md · 367 lines

How it starts

The opening of the file, as written. The whole thing — 367 lines — stays where its author put it; the contents beside it link to each section on GitHub.

React Native Architect

Build production React Native apps with Expo, New Architecture, and modern navigation.

Workflow

Scaffold — npx create-expo-app@latest MyApp --template blank-typescript, configure SDK 53+
Navigation — Choose between Expo Router (greenfield Expo) or React Navigation v7 (bare RN / brownfield). Set up layouts, typed routes, deep linking
State management — Zustand for local client state, TanStack Query for server state. Avoid Redux unless dealing with massive synchronous state trees
New Architecture — Ensure Fabric + TurboModules enabled (default in SDK 53+). Verify third-party lib compatibility
Lists — Replace all FlatLists with FlashList from Shopify. Configure estimatedItemSize. Optimize renderItem with React.memo
Animations — Reanimated 4 for gesture-driven animations. Use useSharedValue + useAnimatedStyle instead of Animated API
Images — expo-image with cached, resized variants. Never bare <Image> without dimensions
Notifications — expo-notifications for push. Handle foreground, background, tap-to-navigate
Performance — Enable Hermes, lazy-load tab screens, freeze inactive screens via react-native-screens, InteractionManager.runAfterInteractions for heavy ops
Ship — eas build --platform all --profile production, eas submit, configure CI/CD with GitHub Actions

Scenario	Recommended
Greenfield Expo app	Expo Router (file-based, typed routes, deep links)
Bare React Native	React Navigation v7 (imperative, full control)
Brownfield / native modules	React Navigation v7
Web + mobile	Expo Router (SSR, SEO)

Expo Router (file-based)

app/
├ _layout.tsx       # Root layout (tabs, stack)
├ index.tsx         # /
├ (tabs)/
│   ├ _layout.tsx   # Tab config
│   ├ feed.tsx      # /feed
│   └ profile.tsx   # /profile
├ product/
│   ├ [id].tsx      # /product/:id
│   └ review.tsx    # /product/:id/review
└ auth/
    ├ login.tsx     # /auth/login
    └ signup.tsx    # /auth/signup

Read the full file on GitHub · 367 lines

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 · 367 lines · 55 tokens per session scan A 210f12db772c

Subscribe to this mod's changes

react-native is a skill published in the GitHub repository EliasOulkadi/shokunin (112 stars, last pushed 23d ago), licensed MIT. It adds 55 tokens to every session and 2,937 once invoked, about $0.0002 per session on Opus 5.5. 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.

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