Refactor transportclose 12.5

app.js

@@ -109,7 +109,7 @@ peers.on('connection', async socket => {
   })
 
   socket.on('createRoom', async ({ callId }, callback) => {
-    console.log('router', router);
+    console.log('Router length:', Object.keys(router).length);
     if (router[callId] === undefined) {
       // worker.createRouter(options)
       // options = { mediaCodecs, appData }
@@ -160,7 +160,7 @@ peers.on('connection', async socket => {
     producer.on('transportclose', () => {
       console.log('transport for this producer closed ')
       producer.close()
-      router[callId] = null
+      delete router[callId]
     })
 
     // Send back to the client the Producer's id
@@ -191,7 +191,7 @@ peers.on('connection', async socket => {
 
         consumer.on('transportclose', () => {
           console.log('transport close from consumer', callId)
-          router[callId] = null
+          delete router[callId]
         })
 
         consumer.on('producerclose', () => {