Dia antes primera install

node_modules/node-red-contrib-excel/excel/excel.js

@@ -0,0 +1,36 @@
+module.exports = function (RED) {
+    "use strict";
+    var json2xls = require('json2xls');
+    var fs = require('fs'); 
+
+    function ConvertJSONToExcel(config) {
+        RED.nodes.createNode(this, config);
+        this.file = config.file;
+        this.on('input', function(msg){
+            var node = this;
+            var file = msg.filepath;
+            if(file === undefined || file === null){
+               if(node.file === undefined || node.file === null ){
+                   console.log("File path cannot be null");
+                   node.error("filepath cannot be null");
+               }else{
+                   file = node.file;
+               }
+            }
+            if(msg.payload === undefined || msg.payload === null){
+                console.log("Payload cannot be blank");
+                node.error("payload cannot be null");
+            }else{
+                var xls = json2xls(msg.payload);
+                fs.writeFileSync(file, xls, 'binary');
+                msg.attachment=file;
+                msg.filename=file;
+                msg.file=file;
+                node.send(msg);
+            }
+        });
+        
+    };
+
+    RED.nodes.registerType("excel", ConvertJSONToExcel);
+}