Sigma

TypeScript parser combinator library for building fast and convenient parsers

TypeScript-first

Sigma leverages advanced TypeScript features to provide you with clean and concise API that is both typesafe and easy to use

Sigma is capable of parsing LL grammars using recursive descent with backtracking, which is enough for most of the cases

Sigma was built with performance in mind and it can actually perform on par with some Rust libraries like pom or chumsky

Sigma works in any modern environment: Node — both CommonJS and ESM, Deno and browsers — via Skypack or esm.run