Feat/handle throws

package.json

@@ -36,6 +36,7 @@
     "libp2p-tcp": "^0.11.5",
     "libp2p-websockets": "~0.10.4",
     "pre-commit": "^1.2.2",
+    "pull-abortable": "^4.1.1",
     "pull-pair": "^1.1.0"
   },
   "dependencies": {

src/muxer.js

@@ -51,7 +51,12 @@ class MultiplexMuxer extends EventEmitter {
   // method added to enable pure stream muxer feeling
   newStream (callback) {
     callback = callback || noop
-    let stream = this.multiplex.createStream()
+    let stream
+    try {
+      stream = this.multiplex.createStream()
+    } catch (err) {
+      return setImmediate(callback(err))
+    }
 
     const conn = new Connection(
       catchError(toPull.duplex(stream)),