From a7bcd12bc31b0490e4879eaea52c7fe3bc418d2d Mon Sep 17 00:00:00 2001
From: Massimo Candela <massimo@us.ntt.net>
Date: Tue, 14 Jan 2020 02:51:12 +0100
Subject: [PATCH] fix issue with empty batches in connector

---
 src/connectors/connector.js | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/connectors/connector.js b/src/connectors/connector.js
index 909f1a7..b21dd87 100644
--- a/src/connectors/connector.js
+++ b/src/connectors/connector.js
@@ -71,10 +71,12 @@ export default class Connector {
     _sendBatch = () => {
         clearTimeout(this.timerBatch);
         delete this.timerBatch;
-        const msg = this.name + "-" + '[' + this.batch.join(',') + ']';
-        this.batch = [];
-        if (this.messageCallback)
-            this.messageCallback(msg);
+        if (this.batch.length) {
+            const msg = this.name + "-" + '[' + this.batch.join(',') + ']';
+            this.batch = [];
+            if (this.messageCallback)
+                this.messageCallback(msg);
+        }
     };
 
     _message = (message) => {