Fix aborting

lib/batch.js

@@ -1,9 +1,10 @@
 import createError from 'http-errors'
+import onFinished from 'on-finished'
 
 export function batch({cluster}) {
   return async (req, res) => {
     const ac = new AbortController()
-    req.on('close', () => ac.abort())
+    onFinished(res, () => ac.abort()) // Abort the batch request if the client disconnects
 
     const {requests} = req.body