get changed files from Git, with Node

git-diff-name-only.js

var diff = require('child_process').spawn('git', [
  'diff',
  '--name-only'
]);

diff.stdout.on('data', function (data) {
  var files = data.toString().split('\n').filter(function(val) {
    // Filter out ""
    return val;
  });
  console.log('files', files);
});