Grunt Nodemon failing while initializing

Question

I am trying to start grunt when ever there is a js change and have following code:

module.exports = function (grunt) {
    grunt.initConfig({
        nodemon: {
            all: {
                script: "server.js",
                options: {
                    watchedExtensions:['js']
                }
            }
        },
    });

    grunt.loadNpmTasks('grunt-nodemon');
    grunt.registerTask('default', ['nodemon']);

};

But getting following error: Line 11, Char 5 , expected identifier,string or number.

Line 11 , char 5 is }, (curly braces)

My Server.js looks like following .

var http = require("http")


var controllers = require("./controllers");

var express = require("express");

var app = express();

app.set("view engine", "vash");

//Set the public static resource folder
app.use(express.static(__dirname + "/public"));

//Map the routes
controllers.init(app);

var server = http.createServer(app);
server.listen(5465);