semvercheck

Paste any npm version range and get a plain English explanation.

What it does

• Explains what the range actually allows (^, ~, >=, <, ||, hyphen, x-ranges)
• Shows the resolved comparator form (e.g. ^1.2.3 → >=1.2.3 <2.0.0)
• Displays a sample version grid — which versions match, which don't
• Shareable URLs (/?range=^1.2.3)

Stack

• Runtime — Bun
• Framework — Hono with JSX SSR
• Styling — Tailwind CSS (CDN)
• Parsing — node-semver

Run locally

bun install
bun run dev

Open http://localhost:3000.

License

MIT