Diff Review, animated React component

An inline review of AI edits to a paragraph, with removals struck through in red and additions typed in green. Accept all folds the old words away, Reject folds the new ones away, and clicking a single change takes just that one.

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AI Components

Play with it

Move the controls and watch it change. Copy code gives you a snippet with only the props you changed.

Homepage · Hero copyDraft

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Props

Prop	Type	Default	What it does
parts	DiffPart[]	DIFF_REVIEW_PARTS	The paragraph as [kind, text] runs, where kind is "same", "del" or "ins". A del followed by an ins is one replacement; a lone del is a removal.
title	string	"Homepage · Hero copy"	Small label above the text box.
width	number	520	Width of the card in px. It never grows past its container.
autoplay	boolean	false	Improves the writing, accepts every edit and returns to the draft on a loop until someone touches the card. Only runs while the card is on screen and never under reduced motion.
className	string	""	Extra classes for the card.
enableSound	boolean	true	Plays interface sounds on interaction. They follow the sound switch (setSoundsEnabled, on by default) and stay silent on hover. Autoplay makes the same sounds once the visitor has used the page. Pass false to silence this component.

Add it to your project

Prepare your project

You need Tailwind CSS and the @/import alias. If shadcn isn't set up yet, initialise it once:

npx shadcn@latest init

Then add the Nexus registry to your components.json (the registries key is the part that matters):

{
  "$schema": "https://ui.shadcn.com/schema.json",
  "style": "default",
  "rsc": true,
  "tsx": true,
  "tailwind": {
    "css": "src/app/globals.css",
    "baseColor": "neutral",
    "cssVariables": true,
    "prefix": ""
  },
  "aliases": {
    "components": "@/components",
    "utils": "@/lib/utils",
    "ui": "@/components/ui",
    "lib": "@/lib",
    "hooks": "@/hooks"
  },
  "registries": {
    "@nexus-labs": "https://www.nexus-ui.com/api/registry/{name}"
  }
}

2
Add the component
Run this from your project root. It adds the component, the utilities it uses and its packages.
```
npx shadcn@latest add @nexus-labs/diff-review
```
3
Check what was added
With the standard aliases, these files land in your project:
components/
diff-review/
diff-review.tsx
index.ts
4
Copying by hand? Install the packages
Skip this if you used the command above.
```
npm install framer-motion
```

Use it in a page

Import it and render it. The Code tab above has the full example.

// app/page.tsx
import { DiffReview } from "@/components/diff-review";

export default function Page() {
  return (
    <main>
      <DiffReview />
    </main>
  );
}

Diff Review questions

Does it make sound, and how do I turn it off?

Chimes softly when you press Accept all, switches off with a quiet click on Reject and taps when you take a single change; autoplay makes the accept sound once the visitor has used the page. Sounds are synthesised with the Web Audio API, so there are no audio files, and they only play after a click or key press. Pass `enableSound={false}` to silence this component, or call `setSoundsEnabled(false)` from `@/lib/ui-sounds` to switch every sound off at once. The CLI installs `@/lib/ui-sounds` with the component.

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