aws_upload.js

var query = []

/// ...

query.push(new Promise(function(resolve, reject) {
  var fileKey = 'updates/' + version + '/' + moduleName + '/' + fileName.split('/')[1];
  var upload = s3Stream.upload({
    Bucket: 'qalqan',
    Key: fileKey
  });
  upload.on('part', function(details) {});
  upload.on('error', function(error) {
    console.log(error);
    reject(error);
  });
  upload.on('finish', function() {
    resolve();
  });
  entry.pipe(upload);
}));

Promise.all(query).then(function() {
  /// end
});