**Summary** `bittorrent-dht` is a lightweight, production‑ready implementation of the BitTorrent Distributed Hash Table (DHT) written in JavaScript for Node.js. It provides a complete, spec‑compliant DHT that enables trackerless torrent peer discovery, supports mutable and immutable data storage (BEP 44), and can be used directly by peer‑to‑peer applications—most notably the WebTorrent ecosystem and other BitTorrent‑related libraries. **Target audience** The library is aimed at developers who need to add peer‑to‑peer discovery and decentralized storage capabilities to Node.js applications—especially those building streaming or file‑sharing services (e.g., WebTorrent, Peerflix, Playback) or any project that requires a robust, UDP‑based DHT without external trackers.