A set of efficient utilities that extend the use of JSON (streaming, estimate size, NDJSON/JSONL, etc.)
[](https://github.com/jhlywa/chess.js/actions) [](https://www.npmjs.com/package/chess.js) [
JavaScript utilities with respect to emerging standard
ECMAScript extensions and shims
Timers extensions
MCP Apps SDK — Enable MCP servers to display interactive user interfaces in conversational clients.
A tool to open and run web extensions
m3u8 parser
Replaces a file extension with another one.
Extensions to Node.js child_process module
A command line tool to help build, run, and test web extensions
A set of cool extensions for OpenLayers (ol) in node modules structure
Get the file extension and MIME type from a file
Chess and chess variant rules and operations
List of known file extensions and their MIME types
A decentralized chess protocol built on the Stacks blockchain.
Simple and fast Node.js chess engine with configurable AI and no dependencies
PostCSS plugin to import CSS files
Self-host the Inter font in a neatly bundled NPM package.
Self-host the Inter font in a neatly bundled NPM package.
JSON Schema validation for Human
TypeScript definitions for webgl-ext
Self-host the Roboto font in a neatly bundled NPM package.
Type definitions for ol-ext
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