Josef Jadrny

js-chess-engine. Complete TypeScript chess engine with zero dependencies for Node.js >=24 and browsers. Features configurable AI (5 predefined difficulty levels), stateful/stateless APIs, and supports JSON and FEN formats.

js-chess-engine-app. Single-page React app example for js-chess engine backend

js-chess-engine-fe-app. JavaScript

asynchronous-cache. Simple asynchronous in-memory cache

js-idb. Lightweight JSON database for TypeScript with schema validation, indexed search, and sorting. Zero dependencies. In-memory or file-persisted. Node.js & browser.