unicode‑properties is a tiny Node.js library that gives fast, memory‑efficient lookup of Unicode character data (category, script, numeric value, combining class, East Asian width, and various boolean tests) using a 9.5 KB compressed trie for the full Unicode 12 code‑point set. It’s aimed at developers who need reliable Unicode property information in JavaScript applications—such as parsers, validators, or text‑processing tools—without pulling in large ICU‑style dependencies.