snb‑mock‑middleware is a lightweight Node.js library that adds a mock‑API layer to an Express (or any dev‑server) setup. By pointing it at a directory of simple JavaScript files that export route definitions (optionally using mockjs), developers can quickly stub REST endpoints for front‑end development or testing without needing a real backend. It’s aimed at web developers who want an easy, configurable way to serve fake data during local development.