advanced-event-handler-refs

Store callbacks in refs when used in effects that shouldn't re-subscribe on callback changes.

Skills
Web development
1

What it does and how to use it

A skill that teaches Claude Code to do web development tasks well. It is packaged knowledge the model uses whenever it is relevant.

Install the skill (command above).
In Claude Code, describe what you need - the skill turns on by itself when the context fits.
No commands to memorize: you talk in plain language and the skill does the rest.

Install (Claude Code)

mkdir -p .claude/skills/advanced-event-handler-refs && curl -fsSL https://doutorai.pt/data/lib/skills__advanced-event-handler-refs.md -o .claude/skills/advanced-event-handler-refs/SKILL.md

Paste this command into the terminal, in your project folder, and the component installs automatically.

Content

---
title: Store Event Handlers in Refs
impact: LOW
impactDescription: stable subscriptions
tags: advanced, hooks, refs, event-handlers, optimization
---

## Store Event Handlers in Refs

Store callbacks in refs when used in effects that shouldn't re-subscribe on callback changes.

**Incorrect (re-subscribes on every render):**

```tsx
function useWindowEvent(event: string, handler: () => void) {
  useEffect(() => {
    window.addEventListener(event, handler)
    return () => window.removeEventListener(event, handler)
  }, [event, handler])
}
```

**Correct (stable subscription):**

```tsx
fun

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