pratt‑parser is a tiny, zero‑dependency JavaScript library that implements a Top‑Down Operator Precedence (TDOP) parser. It lets developers define token types, prefix and infix operators with precedence and combine functions, then parse arithmetic‑style expressions (or any grammar) into custom AST/value objects. The package is aimed at library authors, language designers, and tool builders who need a flexible, TypeScript‑typed parser without pulling in a full‑featured compiler framework.