check if file already exist

src/services/sharedFolder.js

@@ -47,7 +47,7 @@ module.exports = {
 
   set: function (args, cb) {
     var path = utils.absolutePath(args.path, this.sharedFolder)
-    if (!isRealPath(path, cb)) return
+    if (fs.existsSync(path) && !isRealPath(path, cb)) return
     this.trackDownStreamUpdate[path] = path
     fs.writeFile(path, args.content, 'utf8', (error, data) => {
       if (error) console.log(error)