OpenAPI Validator Middleware

This package, `openapi-validator-middleware`, provides robust input validation for HTTP requests within Node.js frameworks such as Express, Koa, and Fastify. It leverages your existing OpenAPI (formerly Swagger) 2.0 or 3.0 definition files to automatically validate request bodies, headers, path parameters, and query parameters, using the powerful AJV library under the hood. The current stable version is 3.2.6, with the last significant update in February 2022. This suggests a maintenance-focused release cadence rather than active feature development, as over four years have passed since its last update. A key differentiator is its multi-framework support and its reliance on standardized OpenAPI definitions for validation logic, offering a consistent approach to API input schema enforcement. It was notably renamed from `express-ajv-swagger-validation` starting with version 2.0.0, which was a breaking change primarily affecting package naming and import paths for existing users.