A tool set for CSS: fast detailed parser (CSS → AST), walker (AST traversal), generator (AST → CSS) and lexer (validation and matching) based on specs and browser implementations
Javascript color object with implicit color space conversions. Supports RGB, HSV, HSL and CMYK with alpha channel.
help secure Express/Connect apps with various HTTP headers
A native "Headers" class polyfill.
Official Airbrake notifier for browsers
SharePoint Framework support for the web part top actions user interface.
Passport authentication strategy using JSON Web Tokens
Stencil Component Starter
validate and sanity-check geojson files
ProseMirror Markdown integration
Measure process load
Microsoft Graph communication layer for the SharePoint Framework
An event-driven JavaScript unit testing library.
AWS SDK for JavaScript Cloudformation Client for Node.js, Browser and React Native
A point in polygon based on the paper Optimal Reliable Point-in-Polygon Test and Differential Coding Boolean Operations on Polygons
A micro-library of stream components for building custom JSON and JSONC processing pipelines with a minimal memory footprint — parse, filter, and transform JSON far larger than available memory with a SAX-inspired token API, on Node.js or Web Streams.
React Transform that catches errors inside React components
Authentication library for the browser environment using Web Crypto API
WhatWG/W3C compliant EventSource client for Node.js and browsers
A TypeScript result type taking cues from Rust's Result and Haskell's Either types
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Maps socket errors to SocketError objects subclassing httperrors.
A wrapper around Fetch just for JSON
The Heft build rig for building SPFx projects