Express Joi Middleware

express-joi-middleware is an Express.js middleware designed to integrate Hapi.js's Joi validation library seamlessly into Express applications. Currently at its first stable release, version 1.0.0, this package provides robust request body, query, parameters, and headers validation against user-defined Joi schemas. Its key differentiators include extensive customization options, such as the ability to supply a specific Joi instance (useful for managing Joi versions or custom extensions), fine-grained control over error response handling (either automatically sending a 400 Bad Request or `next`ing the Joi error for custom handling), and the choice to override the `req.body` or create a new `req.validated` key with the processed data. The project is new, so a specific release cadence has not yet been established, but it focuses on providing a flexible and configurable validation layer.