feat(onUse): add connect adapter

main.js

@@ -24,10 +24,9 @@ export { isStream } from './src/isStream'
 export { keyTransform } from './src/keyTransform'
 export { log } from './src/log'
 export { matchUrl } from './src/matchUrl'
-export { setHref } from './src/setHref'
-export { use } from './src/use'
 export { onRequest } from './src/onRequest'
 export { onUpgrade } from './src/onUpgrade'
+export { onUse } from './src/onUse'
 export { parseBody } from './src/parseBody'
 export { parseBodyJson } from './src/parseBodyJson'
 export { parseNumber } from './src/parseNumber'
@@ -38,9 +37,11 @@ export { routeUrl } from './src/routeUrl'
 export { session } from './src/session'
 export { sessionStoreMap } from './src/sessionStoreMap'
 export { setCookie } from './src/setCookie'
+export { setHref } from './src/setHref'
 export { setSessionValue } from './src/setSessionValue'
 export { stop } from './src/stop'
 export { toReadableStream } from './src/toReadableStream'
+export { use } from './src/use'
 export { withJson } from './src/withJson'
 export { writeBody } from './src/writeBody'
 export { writeCompressibleBody } from './src/writeCompressibleBody'

src/onUse.js

@@ -0,0 +1,28 @@
+import { respond } from './tools/respond'
+
+export function onUse(handle) {
+  /*
+  Adapts a Serware `handler` to the [`connect`](https://github.com/senchalabs/connect) API.
+  Note that the `handler` second argument, `next`, calls the next middleware, preventing any changes to the response object. Nothing is returned by 
+  */
+  return async function (request, response, next) {
+    request.respond = function (options) {
+      if (options == null) {
+        return response
+      }
+      if (options.respond != null) {
+        // If request object is provided, return its response object
+        return options.respond()
+      }
+      return respond(response, options)
+    }
+    await handle(request, (request) => {
+      if (request != null) {
+        throw new Error(
+          'Calls to "next" should be performed without any argument.',
+        )
+      }
+      next()
+    })
+  }
+}