rendering-hydration-no-flicker
When rendering content that depends on client-side storage (localStorage, cookies), avoid both SSR breakage and post-hydration flickering by injecting a synchronous script that updates the DOM before React hydrates.
- Skills
- Web development
- 4
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mkdir -p .claude/skills/rendering-hydration-no-flicker && curl -fsSL https://doutorai.pt/data/lib/skills__rendering-hydration-no-flicker.md -o .claude/skills/rendering-hydration-no-flicker/SKILL.mdPaste this command into the terminal, in your project folder, and the component installs automatically.
Content
---
title: Prevent Hydration Mismatch Without Flickering
impact: MEDIUM
impactDescription: avoids visual flicker and hydration errors
tags: rendering, ssr, hydration, localStorage, flicker
---
## Prevent Hydration Mismatch Without Flickering
When rendering content that depends on client-side storage (localStorage, cookies), avoid both SSR breakage and post-hydration flickering by injecting a synchronous script that updates the DOM before React hydrates.
**Incorrect (breaks SSR):**
```tsx
function ThemeWrapper({ children }: { children: ReactNode }) {
// localStorage is not available on se
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