r‑edit is a JavaScript library that enables real‑time collaborative text editing using commutative replicated data structures (CRDTs) instead of operational transforms. It provides simple client‑side widgets (e.g., a textarea or markdown viewer) and a stream‑based API that can be hooked into a server with minimal code, making it ideal for developers building low‑overhead, peer‑to‑peer or client‑server collaborative editors.