Initial commit, 90% there

node_modules/node-red-contrib-xlsx-to-json/xlsx-to-json.js

@@ -0,0 +1,52 @@
+module.exports = function(RED){
+    function convertxlsx(config){
+        RED.nodes.createNode(this,config);
+        //Los inputs
+        this.filepath = config.filepath;
+        this.rangecell = config.rangecell;
+        this.columnkey = config.columnkey;
+        this.sheet = config.sheet;
+
+        var node = this;
+        node.on('input', function(msg){
+            if(!node.filepath){
+                node.filepath = msg.filepath;
+            }
+
+            if (!node.rangecell){
+                node.rangecell = msg.rangecell;
+            }
+            if(!node.columnkey){
+                node.columnkey = msg.columnkey;
+            }
+
+            if (!node.sheet){
+                node.sheet = msg.sheet;
+            }
+            const excelToJson = require('convert-excel-to-json');
+            let result = {};
+            let columnas;
+            const defaultColumn = '{"*": "{{columnHeader}}"}';
+
+             if(node.columnkey){
+                columnas = JSON.parse(node.columnkey);
+            }else{
+                
+                columnas = JSON.parse(defaultColumn);
+            } 
+            result = excelToJson({
+                sourceFile: node.filepath,
+                range: node.rangecell,
+                columnToKey: columnas
+               // sheets: node.sheet
+            })
+            if (node.sheet){
+                msg.payload = result[node.sheet];
+            }else{
+                msg.payload = result;
+            }
+            node.send(msg);
+        });
+    }
+    RED.nodes.registerType("XLSX-to-json", convertxlsx);
+}