Fix support of Node 6

.travis.yml

@@ -2,6 +2,7 @@ language: node_js
 
 node_js:
   - "8"
+  - "6"
 
 jdk:
   - oraclejdk8

sonarts-core/src/runner/sonarUtils.ts

@@ -35,7 +35,9 @@ export function stringifyToStream(stream: NodeJS.WritableStream, data: any[]) {
     stream.write("{");
 
     let firstProp = true;
-    Object.entries(element).forEach(([key, value]) => {
+
+    Object.keys(element).forEach(key => {
+      const value = element[key];
       if (value !== undefined) {
         if (!firstProp) {
           stream.write(",");

sonarts_mvn_build_deploy_analyze.sh

@@ -9,6 +9,11 @@
 # - ARTIFACTORY_DEPLOY_USERNAME: login to deploy to $ARTIFACTORY_DEPLOY_REPO
 # - ARTIFACTORY_DEPLOY_PASSWORD: password to deploy to $ARTIFACTORY_DEPLOY_REPO
 
+# deploy and analyze only on one axes of node versions
+if [ "${TRAVIS_NODE_VERSION}" != "8" ]; then
+  exit 0
+fi
+
 set -euo pipefail
 
 #install maven