TypeScript chess libraries following FIDE rules. Zero dependencies, strict types, ESM-only.
Packages: @echecs on npm
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- pgn Public
PGN (Portable Game Notation) parser. Supports comments, variations, NAGs, and annotations.
echecsjs/pgn’s past year of commit activity - uci Public
UCI engine wrapper. Typed event-emitter API for communicating with chess engines like Stockfish.
echecsjs/uci’s past year of commit activity - position Public
Chess position type and board utilities. Foundation for @echecs/fen, @echecs/san, and @echecs/game.
echecsjs/position’s past year of commit activity - react-board Public
React chessboard component with drag & drop, animation, and theming. Bundled cburnett piece set, zero external dependencies.
echecsjs/react-board’s past year of commit activity - tournament Public
Stateful chess tournament orchestrator for any FIDE pairing system. Supports Swiss, round-robin, and accelerated formats. Zero dependencies.
echecsjs/tournament’s past year of commit activity - san Public
Parse, resolve, and stringify SAN (Standard Algebraic Notation) chess moves. Strict TypeScript.
echecsjs/san’s past year of commit activity - tunx Public
Parse and stringify SwissManager TUNX binary tournament files. Zero dependencies, strict TypeScript, full round-trip fidelity.
echecsjs/tunx’s past year of commit activity
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