Conditional Express Middleware

condition-middleware is an Express.js middleware utility that enables conditional execution of other middleware functions based on a runtime predicate. It allows developers to define complex branching logic within their Express route definitions, executing different middleware stacks depending on a boolean, numeric, or string-based condition evaluated against the request object. This approach streamlines the creation of dynamic request processing flows, avoiding cumbersome `if/else` statements directly in route handlers. The package currently stands at version 1.1.0 and ships with TypeScript types, facilitating its use in modern JavaScript and TypeScript projects. While a formal release cadence isn't specified, its current version indicates active maintenance. Its key differentiator is simplifying the composition of conditional middleware, which is a common pattern for authentication, authorization, or feature toggling, compared to manual conditional chaining or other more complex conditional middleware solutions.