execute a batch script from node in seperate comamnd line

call a batch file from node script and run that batch file in separate cmd with out executing the running script cmd

var spawn = require('child_process').spawn,
    ls    = spawn('C:\\Users\\priyanka.sukumaran\\Desktop\\vm-server\\appiumStart.bat', ['-lh', '/usr']);

ls.stdout.on('data', function (data) {
  console.log('stdout: ' + data);
});

ls.stderr.on('data', function (data) {
  console.log('stderr: ' + data);
});

ls.on('exit', function (code) {
  console.log('child process exited with code ' + code);
});

but while running the above script the batch file will not execute in seperate cmd it executed in the same cmd of the script i run. How can i excute the batch file in seperate command line????????