Update:Remove node-cron dependency

server/libs/nodeCron/convert-expression/range-conversion.js

@@ -0,0 +1,39 @@
+'use strict';
+module.exports = ( () => {
+    function replaceWithRange(expression, text, init, end) {
+
+        const numbers = [];
+        let last = parseInt(end);
+        let first = parseInt(init);
+
+        if(first > last){
+            last = parseInt(init);
+            first = parseInt(end);
+        }
+
+        for(let i = first; i <= last; i++) {
+            numbers.push(i);
+        }
+
+        return expression.replace(new RegExp(text, 'i'), numbers.join());
+    }
+
+    function convertRange(expression){
+        const rangeRegEx = /(\d+)-(\d+)/;
+        let match = rangeRegEx.exec(expression);
+        while(match !== null && match.length > 0){
+            expression = replaceWithRange(expression, match[0], match[1], match[2]);
+            match = rangeRegEx.exec(expression);
+        }
+        return expression;
+    }
+
+    function convertAllRanges(expressions){
+        for(let i = 0; i < expressions.length; i++){
+            expressions[i] = convertRange(expressions[i]);
+        }
+        return expressions;
+    }
+
+    return convertAllRanges;
+})();