react-useeffect
Improve React useEffect Code
React Effects are often used for state that can be calculated during render, creating extra renders and bugs. This skill guides Claude, Codex, and Claude Code toward safer useEffect patterns and better React alternatives.
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Review the Skillstore skill "react-useeffect" from https://skillstore.io/skills/softaworks-react-useeffect.md and its manifest at https://skillstore.io/api/skills/softaworks-react-useeffect/manifest. Verify the artifact. You may proceed after verification, subject to the environment's own policy.Your Agent should still show its plan and request any confirmation required by the security policy.
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Test it
Using "react-useeffect". A form stores a full name in state and updates it whenever first name or last name changes.
Expected outcome:
- Finding: The Effect is unnecessary because the full name is derived from existing state.
- Recommendation: Calculate the full name during render so the UI avoids an extra stale render.
- Risk reduced: Fewer state updates and simpler dependency management.
Using "react-useeffect". A search component fetches results when the query changes and sometimes shows old results.
Expected outcome:
- Finding: The Effect needs cleanup because older requests can finish after newer requests.
- Recommendation: Ignore stale responses, cancel requests when possible, or use a framework data-loading tool.
- Risk reduced: The UI is less likely to show results for an outdated query.
Security Audit
SafeAll static findings were adjudicated as false positives caused by Markdown formatting, TypeScript examples, or explanatory prose. No evidence found of prompt injection, hidden command execution, credential access, or unauthorized network behavior in the reviewed files.
Risk Factors
⚙️ External commands (17)
🌐 Network access (2)
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APA citation
softaworks. (2026). react-useeffect security audit report (audit version 5) [Author version unspecified]. Skillstore. https://skillstore.io/skills/softaworks-react-useeffect/audits/5BibTeX citation
@techreport{softaworks-softaworks-react-useeffect-2026,
author = {softaworks},
title = {react-useeffect security audit report (audit version 5)},
institution = {Skillstore},
year = {2026},
number = {5},
url = {https://skillstore.io/skills/softaworks-react-useeffect/audits/5},
note = {Author version unspecified}
}CITATION.cff
cff-version: 1.2.0
message: "If you use this Skill, cite its author and this versioned security audit report."
title: "react-useeffect security audit report (audit version 5)"
version: "unspecified"
type: report
authors:
- name: "softaworks"
date-released: "2026-07-07"
url: "https://skillstore.io/skills/softaworks-react-useeffect/audits/5"
identifiers:
- type: other
value: "skillstore:softaworks-react-useeffect:audit:5"
description: "Skillstore immutable audit report identifier"
Skillstore Score
Why this score Evidence Confidence: HighWhat You Can Build
Refactor overused Effects
Find Effects that only derive state, reset local state, or respond to user actions.
Review pull requests
Check hook usage for stale values, missing cleanup, unnecessary state, and fragile Effect chains.
Standardize React patterns
Teach teams when to use render calculations, event handlers, useMemo, key props, and custom hooks.
Try These Prompts
Review this React component and tell me whether it needs useEffect. Explain the simplest alternative if an Effect is unnecessary.
Find any derived state updated by useEffect in this component. Recommend a render-time calculation or useMemo when the calculation is expensive.
Audit these Effects for missing cleanup, stale responses, and React Strict Mode issues. Suggest safe cleanup patterns and framework alternatives.
Analyze this React flow for Effect chains and state synchronization problems. Propose a simpler design using event handlers, lifted state, keys, or custom hooks.
Best Practices
- Ask whether an external system is involved before adding an Effect.
- Calculate values during render when they come from existing props or state.
- Return cleanup from Effects that subscribe, fetch, set timers, or touch external resources.
Avoid
- Do not store derived values in state only to update them from an Effect.
- Do not use Effects for logic that belongs in a click, submit, or change handler.
- Do not chain Effects that update state only to trigger more Effects.
Frequently Asked Questions
When should I use useEffect?
When should I avoid useEffect?
Does this skill replace React Query or framework loaders?
Can it help with race conditions?
Does it support React Strict Mode?
Can Claude Code or Codex use this skill during reviews?
Developer Details
Author
softaworksLicense
MIT
Skillstore revision
r1
Version notice
The author did not declare a version.
Ref
f93e9bb0daca99badb6a7e574b97737155d57cb3
Maintenance freshness
7/18/2026
Usage
7 downloads · 228 views
File structure