npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2026 – Pkg Stats / Ryan Hefner

@ultrachess/react

v1.2.3

Published

Opinionated React chessboard with owned state, byte-scoped subscriptions, refs-only drag, polished default theme and pieces, sounds, arrows, premoves, and SSR static rendering.

Vulnerabilities

Powered byPowered by Snyk
  • 0High
  • 0Medium
  • 0Low

Links

Git

Maintainers

barkouskibarkouski

Keywords

chesschessboardreactreact-chessboardwasmultrachesschess-enginechess-uiaccessibilitywai-ariassrtypescript

Readme

@ultrachess/react

Opinionated React chessboard with owned state, byte-scoped subscriptions, refs-only drag, WAAPI piece movement, Canvas arrows, bundled move sounds, optional mobile haptics, SSR static rendering, WAI-ARIA keyboard parity, and a polished default board using @ultrachess/themes/green plus @ultrachess/pieces/neo. Powered by ultrachess (WASM) and @ultrachess/core.

Status

1.2.x — interactive board, drag, controlled analysis positions, animations, arrows, premoves, sounds, mobile haptics, themes, piece sets, and SSR static rendering are shipped.

Move feedback

  • sound={false} keeps audio fully disabled.
  • sound / useMoveSound allocate audio pools lazily on the first move cue; bundled MP3 assets are emitted by consumer bundlers instead of fetched from a CDN.
  • haptics / useMoveHaptics provide mobile-only tactile feedback using the same move-cue classifier as sound.
  • Controlled positionFen changes emit the same feedback after the initial sync, so analysis/replay boards can keep desktop sounds and mobile haptics without a second integration.

Entry points

  • @ultrachess/react — interactive board (client component).
  • @ultrachess/react/server — static SSR board (zero client JS).
  • @ultrachess/react/canvas — opt-in full-canvas renderer (post-1.0).

Size budget

  • @ultrachess/react < 24 KB gzip.
  • @ultrachess/react/server < 4 KB gzip.

Enforced in CI via size-limit.