In-Process HTTP Request Executor

in-process-request is a lightweight Node.js library designed to execute HTTP handler functions directly within the current process, bypassing the need to start and manage a local HTTP server. This makes it ideal for integration testing of API routes or for internal service-to-service communication within the same application without network overhead. The library provides a unified interface for interacting with handlers from popular web frameworks including Express.js (v3, v4, v5), Koa (v2), Hapi (v19, v20), NestJS (v7), Fastify (v3), Connect (v3), Polka, and Apollo Server (v2, v3). Its current stable version is 0.3.1, with releases typically focusing on bug fixes, dependency updates, and ensuring compatibility with newer versions of supported frameworks. It differentiates itself by offering a robust mocking layer for HTTP requests and responses, allowing for precise control over the input and examination of the output.