Update:Remove node-cron dependency

server/libs/nodeCron/convert-expression/step-values-conversion.js

@@ -0,0 +1,30 @@
+'use strict';
+
+module.exports = (() => {
+    function convertSteps(expressions){
+        var stepValuePattern = /^(.+)\/(\w+)$/;
+        for(var i = 0; i < expressions.length; i++){
+            var match = stepValuePattern.exec(expressions[i]);
+            var isStepValue = match !== null && match.length > 0;
+            if(isStepValue){
+                var baseDivider = match[2];
+                if(isNaN(baseDivider)){
+                    throw baseDivider + ' is not a valid step value';
+                }
+                var values = match[1].split(',');
+                var stepValues = [];
+                var divider = parseInt(baseDivider, 10);
+                for(var j = 0; j <= values.length; j++){
+                    var value = parseInt(values[j], 10);
+                    if(value % divider === 0){
+                        stepValues.push(value);
+                    }
+                }
+                expressions[i] = stepValues.join(',');
+            }
+        }
+        return expressions;
+    }
+
+    return convertSteps;
+})();