TypeScript chess libraries following FIDE rules. Zero dependencies, strict types, ESM-only.
Packages: @echecs on npm
ECHECS
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- uci Public
UCI engine wrapper. Typed event-emitter API for communicating with chess engines like Stockfish.
echecsjs/uci’s past year of commit activity - pgn Public
PGN (Portable Game Notation) parser. Supports comments, variations, NAGs, and annotations.
echecsjs/pgn’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 - fen Public
Parse and stringify FEN (Forsyth–Edwards Notation) chess positions. Strict TypeScript, no-throw API.
echecsjs/fen’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
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