rerender-memo

Extract expensive work into memoized components to enable early returns before computation.

Skills
Web development
0

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/rerender-memo && curl -fsSL https://doutorai.pt/data/lib/skills__rerender-memo.md -o .claude/skills/rerender-memo/SKILL.md

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

Content

---
title: Extract to Memoized Components
impact: MEDIUM
impactDescription: enables early returns
tags: rerender, memo, useMemo, optimization
---

## Extract to Memoized Components

Extract expensive work into memoized components to enable early returns before computation.

**Incorrect (computes avatar even when loading):**

```tsx
function Profile({ user, loading }: Props) {
  const avatar = useMemo(() => {
    const id = computeAvatarId(user)
    return <Avatar id={id} />
  }, [user])

  if (loading) return <Skeleton />
  return <div>{avatar}</div>
}
```

**Correct (skips computation when lo

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