text: var bower = require('bower'),
      eventStream = require('event-stream'),
      gulp = require('gulp'),
      chmod = require('gulp-chmod'),
      zip = require('gulp-zip'),
      tar = require('gulp-tar'),
      gzip = require('gulp-gzip'),
      rename = require('gulp-rename');
  
  // Installs bower dependencies
  gulp.task('bower', function(callback) {
      bower.commands.install([], {}, {})
          .on('error', function(error) {
              callback(error);
          })
          .on('end', function() {
              callback();
          });
  });
  
  gulp.task('prepare-release', gulp.series('bower', function() {
      var version = require('./package.json').version;
  
      return eventStream.merge(
          getSources()
              .pipe(zip('title-notification-plugin-' + version + '.zip')),
          getSources()
              .pipe(tar('title-notification-plugin-' + version + '.tar'))
              .pipe(gzip())
      )
      .pipe(chmod(0644))
      .pipe(gulp.dest('release'));
  }));
  
  // Builds and packs plugins sources
  gulp.task('default', gulp.series('prepare-release'));
  
  /**
   * Returns files stream with the plugin sources.
   *
   * @returns {Object} Stream with VinylFS files.
   */
  var getSources = function() {
      return gulp.src([
              'Plugin.php',
              'README.md',
              'LICENSE',
              'js/*',
              'vendor/jquery-titlealert/LICENSE',
              'vendor/jquery-titlealert/README.markdown',
              'vendor/jquery-titlealert/jquery.titlealert.js'
          ],
          {base: './'}
      )
      .pipe(rename(function(path) {
          path.dirname = 'Mibew/Mibew/Plugin/TitleNotification/' + path.dirname;
      }));
  }
  