uWebSockets.js is a high-performance native Node.js addon that wraps the uWebSockets C++ library to provide blazing-fast HTTP/1.1, WebSocket, and QUIC (HTTP/3) server capabilities. It exposes a clean TypeScript/JavaScript API with features such as per-message compression, backpressure management, streaming responses, pub/sub, and SNI support. The architecture centers on a V8 addon compiled for multiple Node.js ABIs (22/24/26) using a custom build script that also builds BoringSSL and lsquic. The JavaScript layer defines a DeclarativeResponse class that encodes response instructions as typed array opcodes for zero-copy native execution. The codebase includes extensive benchmarks with A/B comparison, automated fuzz testing, and a standalone V8 host for testing. While primarily an application library, it incorporates sophisticated data engineering patterns in its benchmarking and performance measurement infrastructure. The repository is actively maintained with recent commits and low open issue count, though it depends on a volatile V8 API and an external submodule.
This repository is a Node.js wrapper for the TA-Lib (Technical Analysis Library) C library, providing access to technical analysis functions for financial market data. It enables Node.js applications to calculate indicators like SMA, EMA, RSI, MACD, Bollinger Bands, and dozens of candlestick patterns. The architecture uses node-gyp to compile the TA-Lib C library into a native Node.js module, with a JavaScript/TypeScript interface that supports both callback-based async and synchronous execution. Key entry points include index.js (main interface), index.d.ts (TypeScript definitions), and various usage examples. The repository demonstrates strong engineering in its cross-platform build system, clean wrapper pattern for the native addon, and high-quality TypeScript definitions that accurately represent the complex TA-Lib API.