---
title: "One React commit re-renders hundreds of components (smooth/react-render-storm)"
description: "smooth/react-render-storm: An update that re-renders more than a few hundred components in a single commit blocks the main thread for the whole render, which…"
canonical: https://void.parthkapoor.me/rules/smooth/react-render-storm
lastModified: 2026-09-16
---

# One React commit re-renders hundreds of components

`smooth/react-render-storm` · severity **error** · category Smoothness · detected by `void smooth` and `void audit`

## Why it matters

An update that re-renders more than a few hundred components in a single commit blocks the main thread for the whole render, which shows up as a dropped frame or a slow interaction. It usually means a broad context value or top-level state changed.

## How to fix it

Find the state that changed (the parent in the evidence) and narrow what it re-renders: split the context by update frequency, read stores through selectors, move the state down, or animate with CSS/WAAPI instead of React state.

## Example

```
// split a hot value out of a wide context
<ThemeContext value={theme}>
  <ScrollContext value={scroll}>{children}</ScrollContext>
</ThemeContext>
```

## References

- https://react.dev/reference/react/useContext#optimizing-re-renders-when-passing-objects-and-functions

## More smoothness rules

`void smooth` reports 18 rules in this category. How the page feels after it loads: dropped frames during a scripted scroll, long animation frames, INP of real clicks, shifts after input, animated layout properties, idle rAF loops and reduced-motion handling.

- `reduced-motion-ignored` Animations keep running with prefers-reduced-motion — [smooth/reduced-motion-ignored](https://void.parthkapoor.me/rules/smooth/reduced-motion-ignored)
- `raf-loop-idle` requestAnimationFrame loop runs while idle — [smooth/raf-loop-idle](https://void.parthkapoor.me/rules/smooth/raf-loop-idle)
- `scroll-timeline-no-fallback` Content is invisible without scroll-driven-animation support — [smooth/scroll-timeline-no-fallback](https://void.parthkapoor.me/rules/smooth/scroll-timeline-no-fallback)
- `multiple-webgl-contexts` Multiple WebGL contexts — [smooth/multiple-webgl-contexts](https://void.parthkapoor.me/rules/smooth/multiple-webgl-contexts)
- `react-commits-on-scroll` React re-renders while the page scrolls — [smooth/react-commits-on-scroll](https://void.parthkapoor.me/rules/smooth/react-commits-on-scroll)
- `react-wasted-renders` React component re-renders with unchanged props — [smooth/react-wasted-renders](https://void.parthkapoor.me/rules/smooth/react-wasted-renders)
- `react-idle-commits` React keeps committing while the page is idle — [smooth/react-idle-commits](https://void.parthkapoor.me/rules/smooth/react-idle-commits)
- `react-no-names` React component names are minified — [smooth/react-no-names](https://void.parthkapoor.me/rules/smooth/react-no-names)

Detected by `void smooth` and `void audit`. Explain it in a terminal: `void rules smooth/react-render-storm`