Gulp group task

gistfile1.js

var groups = ['basic', 'green', 'light', 'dark'];
groups.forEach(function (group) {
  gulp.task('sprites-' + group, function () {
    gulp.src('./src/' + group + '/png/*.png')
        .pipe(tasks.spritesmith({
            imgName: 'sprite' + group + '.png',
            styleName: 'sprite' + group + '.css',
            imgPath: '../img/sprite' + group + '.png'
        }))
        .pipe(gulpif('*.png', gulp.dest('./dist/img/')))
        .pipe(gulpif('*.css', gulp.dest('./dist/css/')));
  });
});

gulp.task('sprites', groups.map(function (group) {
  return 'sprites-' + group;
}));