Nodejs Code in Visual Studio 2015 throws error but works from node command line. Unexpected token =>

Question

I have a function in node js script which works fine when I am using node command line to start my project:

However when I run the project from visual studio 2015, I get this Error :

Debugger listening on port 5858 C:\nodejs\Apps\EMIApp\config\dal.js:69 response => { db.close(); ^^

SyntaxError: Unexpected token =>

at exports.runInThisContext (vm.js:73:16)

at Module._compile (module.js:443:25)

at Object.Module._extensions..js (module.js:478:10)

at Module.load (module.js:355:32)

at Function.Module._load (module.js:310:12)

at Module.require (module.js:365:17)

at require (module.js:384:17)

at Object.<anonymous> (C:\nodejs\Apps\EMIApp\Server.js:5:12)

at Module._compile (module.js:460:26)

at Object.Module._extensions..js (module.js:478:10) Press any key to continue...

The code sample which has error is :

function connectDB (callback)
{
    // Use connect method to connect to the Server
    MongoClient.connect(url, function (err, db) {

  if (err) //Return if any Error.
  {
    console.log('Unable to connect to the mongoDB server. Error:', err);
    callback(err,null);
    return;
  }

    //HURRAY!! We are connected. :)
    console.log('Connection established to', url);

  //Call the callback function provided & once done, close the connection from here. do not trust callback
    callback(err,db).then(
            response => { db.close();  **//This Line**
                            console.log("db closed");
                        },
            reject => {
                        console.log("Some Error in Callback");
                         try 
                         {
                             db.close();                             
                         }catch(e)
                         {           
                             console.log(e);
                         }
                      }
            );
    }); 
}

I think Visual Studio 2015 is unable to resolve this symbol => . Any ideas on how to make this work in visual studio 2015.

Answer 1

So I finally managed to find the issue.

Visual Studio 2015 installed Node Version v0.12.2 at C:\Program Files (x86)\nodejs.

& I had another node installed (separately before vs 2015 installation ) at c:\nodejs Which was version v4.4.3.

In the properties page of the project, I changed the path of node.exe to point to the latest one.