boneyard

Pixel-perfect skeleton loading screens, extracted from your real DOM. No manual measurement, no hand-tuned placeholders.

How it works

1. Wrap your component with <Skeleton> and give it a name
2. Run npx boneyard-js build — it snapshots the DOM and generates bones
3. Import the registry once — every skeleton auto-resolves

import { Skeleton } from 'boneyard-js/react'

function BlogPage() {
  const { data, isLoading } = useFetch('/api/post')

  return (
    <Skeleton name="blog-card" loading={isLoading}>
      {data && <BlogCard data={data} />}
    </Skeleton>
  )
}

npx boneyard-js build

// app/layout.tsx — add once
import './bones/registry'

Done. Every <Skeleton name="..."> shows a pixel-perfect skeleton on load.

Install

npm install boneyard-js

What it does

• Reads getBoundingClientRect() on every visible element in your component
• Stores positions as a flat array of { x, y, w, h, r } bones
• Renders them as gray rectangles that match your real layout exactly
• Responsive — captures at multiple breakpoints (375px, 768px, 1280px by default)
• Pulse animation shimmers to a lighter shade of whatever color you set

Props

Prop	Type	Default	Description
name	string	required	Unique name for this skeleton
loading	boolean	required	Show skeleton or real content
color	string	#e0e0e0	Bone fill color
animate	boolean	true	Pulse animation
snapshotConfig	object	—	Control which elements are included

CLI

npx boneyard-js build                    # auto-detect dev server
npx boneyard-js build http://localhost:3000
npx boneyard-js build --breakpoints 390,820,1440 --out ./public/bones

Links

• npm
• Documentation

License

MIT