everything-react-native-expo: Skill for Claude Code

.claude/skills/code-review/SKILL.md

code-review is a skill for Claude Code from JubaKitiashvili/everything-react-native-expo. It costs 13 tokens per session (373 once invoked), scanned A, original, MIT.

A code-review command for React Native applications that combines general code checks with performance analysis. React Native is a framework for building mobile apps with JavaScript or TypeScript.

In plain words
What is it for?
Use it to review React Native code for unnecessary re-renders, iOS and Android differences, Expo issues, insecure links or storage, large imports, listener leaks, and animation costs.
Why use it?
It brings common correctness, accessibility, security, platform, rendering, memory, animation, and bundle-size checks into one review.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is JubaKitiashvili/everything-react-native-expo's own configuration. It tells Claude Code how to work on everything-react-native-expo itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything everything-react-native-expo configures →

Part of the erne-universal plugin — 45 skills, 12 agents shipped together

Reuse

Borrowing it

Nothing to install: this file belongs to JubaKitiashvili/everything-react-native-expo. 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/JubaKitiashvili/everything-react-native-expo/main/.claude/skills/code-review/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/JubaKitiashvili/everything-react-native-expo

Made for: Claude Code.

Or install erne-universal, the plugin that ships this one along with the rest of its 45 skills, 12 agents.

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.

agentmods badge for code-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/jubakitiashvili/everything-react-native-expo/code-review.svg)](https://agentmods.dev/skills/jubakitiashvili/everything-react-native-expo/code-review)
Your own site
<a href="https://agentmods.dev/skills/jubakitiashvili/everything-react-native-expo/code-review"><img src="https://agentmods.dev/badge/skills/jubakitiashvili/everything-react-native-expo/code-review.svg" alt="Measured on agentmods" height="20"></a>
Per session 13 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 373 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00013 $0.00373
Opus 5 $0.00006 $0.00187
Sonnet 5 $0.00003 $0.00075
Haiku 4.5 $0.00001 $0.00037

Measured 8d ago against content hash ce8f18d1499e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

code-review 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 8d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

.claude/skills/code-review/SKILL.md · 52 lines

What it actually says

/code-review — Full Code Review

You are executing the /code-review command. Run code-reviewer and performance-profiler agents in parallel for comprehensive review.

Parallel Execution

Launch both agents simultaneously:

Agent 1: code-reviewer

Review the specified code for:

  1. Re-render issues — Unnecessary renders, missing memoization, unstable references
  2. React Native anti-patterns — Direct style mutations, ScrollView for long lists, Animated API usage
  3. Platform parity — iOS/Android behavioral differences, platform-specific bugs
  4. Expo SDK validation — Correct module usage, deprecated APIs, config issues
  5. Accessibility — Missing labels, touch target sizes, screen reader support
  6. Security — Hardcoded secrets, insecure storage, unvalidated deep links

Agent 2: performance-profiler

Analyze for performance issues:

  1. Rendering — Component render counts, unnecessary re-renders
  2. Bundle size — Large imports, tree-shaking opportunities
  3. Memory — Listener cleanup, large object retention
  4. Animations — JS thread animations, Reanimated opportunities

Output Format

Combine results from both agents, grouped by severity:

## Critical (must fix before merge)
[Issues from both agents]

## Warnings (should fix)
[Issues from both agents]

## Suggestions (nice to have)
[Issues from both agents]

## Positive Observations
[Good patterns found]

Notes

  • If agent-device is available, take screenshots to verify UI rendering
  • Apply rules from rules/common/ and active platform layer
  • Flag any violations of project rules
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. 8d ago First seen · 52 lines · 13 tokens per session scan A ce8f18d1499e

Subscribe to this mod's changes

code-review is a skill published in the GitHub repository JubaKitiashvili/everything-react-native-expo (44 stars, last pushed 5mo ago), licensed MIT. It adds 13 tokens to every session and 373 once invoked, about $0.0001 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.

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