# Isomorphic Routing Middleware Adapters ## index.js This module provides functions to adapt `page.js`-style middleware (with `( context, next )` signature) to work with `express.js` (`( req, res, next )`), so `client` middleware satisfying a couple of constraints can be re-used on the server side. For more information, see [Isomorphic Routing docs](docs/isomorphic-routing.md).