koa-within-express

A recent change to Koa makes interop with Express much easier. This repo contains a tiny example of how to have Express handle some routes, pass control to Koa, and then have Koa pass control back to Express if it can't handle a request.

Notes

• Must override ctx.onerror to catch errors and pass them back to Express for handling
• Be sure not to call next if Koa handled the response
• Need some way of detecting if some handler in the Koa middleware stack is trying to send a response. Here the approach is to null out res.statusCode and see if it was set after the middleware stack has run.
• Be sure to reset the response status code to 200 if not handling the response