Selectors decision tree - choose matching selectors, fast
Source maps support for istanbul
Optimise inline SVG with PostCSS.
Intl.LocaleMatcher ponyfill
A robust Punycode converter that fully complies to RFC 3492 and RFC 5891, and works on nearly all JavaScript platforms.
Parse postgres array columns
Inquirer multiline editor prompt
Use enums with familiar, immutable Set and Map interfaces.
Web Streams, based on the WHATWG spec reference implementation
Reusable standard mocks and fakes for popular browser and Node.js APIs, framework/library objects for Jest
Express style path to RegExp utility
Generate source maps
A modern CSS parser and stringifier with TypeScript support
SVGO is a Node.js library and command-line application for optimizing vector images.
A pure JS implementation SHA256.
Sentry Node-Core SDK
👷 workerd for Linux 64-bit, Cloudflare's JavaScript/Wasm Runtime
Run scripts that set and use environment variables across platforms
Full BCP 47 language subtag data from the official IANA repository, in JSON format with multiple indices.
Check if something can be an ecmascript (javascript) identifier name
Testing various api features
User interface primitives for console applications
A convenience helper for testing promises using the mocha library
Simple “Least Recently Used” (LRU) cache