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you-might-not-need-an-effect

Identify and fix useEffect anti-patterns in React code.

Updated Apr 16, 2026
Search Tags:#debugging#anti-patterns#react#javascript#analyze#code-refactor#useeffect
One-click install
npx skills add https://github.com/tunacosgun/sim --skill you-might-not-need-an-effect-tunacosgun
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: you-might-not-need-an-effect
Source: https://github.com/tunacosgun/sim/tree/main/.agents/skills/you-might-not-need-an-effect
Command: npx skills add https://github.com/tunacosgun/sim --skill you-might-not-need-an-effect-tunacosgun

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

useEffect is powerful but easy to misuse, causing unnecessary re-renders, stale closures, and subtle bugs. This Skill helps you identify and fix common useEffect anti-patterns across your React codebase, improving reliability and performance.

Core Features & Use Cases

  • Static analysis and guidance to spot missing dependencies, unnecessary effects, and infinite loops.
  • Propose refactors and fixes with clear rationale and safe, incremental changes.
  • Use Case: When maintaining a React project, audit components for proper effect usage and apply corrections in PRs.

Quick Start

Analyze the specified code scope and apply fixes for useEffect anti-patterns when requested.

Frequently Asked Questions about you-might-not-need-an-effect

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I fix useEffect infinite loops and unnecessary re-renders in React?▼

To fix useEffect infinite loops and unnecessary re-renders in React, you need to identify missing dependencies and anti-patterns. This Skill analyzes your specified codebase scope to spot these issues and proposes safe refactors that improve component reliability and performance.

What are common React useEffect anti-patterns?▼

Common React useEffect anti-patterns include missing dependencies, unnecessary effects, and stale closures that cause subtle bugs. This Skill performs static analysis over your specified code scope to identify these misuses and explains the required corrections.

How do I refactor useEffect hooks across an entire PR or folder?▼

To refactor useEffect hooks across a PR or folder, you analyze the specified scope and apply fixes incrementally. This Skill operates over diffs, PRs, folders, or whole codebases, proposing changes with clear rationale when the fix flag is enabled.

Can I audit my React codebase for useEffect misuses without automatically changing code?▼

Yes, you can audit your React codebase for useEffect misuses without automatic changes. This Skill performs static analysis and provides guidance to spot issues, and only applies fixes when the fix flag is explicitly set to true.

Why does my React component have stale closures inside useEffect?▼

React components develop stale closures inside useEffect when dependency arrays are incorrect or missing. This Skill analyzes your JavaScript code to detect these anti-patterns, explains the issue, and proposes safe refactors to ensure proper state capture.

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