Node HTTP Mocks

node-mocks-http is a testing utility for Node.js environments that provides mock implementations of `http.IncomingMessage` (request) and `http.ServerResponse` (response) objects. It is designed to facilitate unit testing of web server applications, particularly those built with frameworks like Express, Next.js, and Koa, by allowing developers to simulate HTTP requests and responses without needing to spin up a full HTTP server. The current stable version is 1.17.2, and the project shows a positive release cadence with recent updates. Key differentiators include its focus on low-level `http` object mocking, bundled TypeScript typings, and explicit support for framework-specific request/response types (e.g., Express, Next.js API routes, Next.js App Router). This makes it suitable for isolating and testing individual route handlers or middleware functions efficiently.