Symfony 2 with Gulp for Front-End Assets (optimize & make universal)

SymfonyGulp.js

var gulp = require('gulp');
var uglify = require('gulp-uglify');
var uglifycss = require('gulp-uglifycss');
var less = require('gulp-less');
var rjs = require('requirejs').optimize;
var concat = require('gulp-concat');
var bower = require ('gulp-bower');
var watch = require('gulp-watch');
var batch = require('gulp-batch');
var path = require('path');
var exec = require('child_process').exec;

var env = process.env.NODE_ENV || 'development';
var locale = "en";

var paths = {
    root: './web/',
    styles: {
        root: './src/*/Bundle/*/Resources/public/css/',
        main: './src/*/Bundle/*/Resources/public/css/specific/jv1tus/style.less',
        output: {
            dev: './web/css/jv1tus',
            prod: './web/dist/css/jv1tus'
        }
    },
    javascripts: {
        root: './src/*/Bundle/*/Resources/marionette',
        app: './src/*/Bundle/*/Resources/marionette/apps/**/*.js',
        output: {
            dev: './web/js/',
            prod: './web/js/app/dist'
        }
    }
};

gulp.task('clean', function () {
    return exec('sudo rm -rf web/js/' +
    '&& sudo rm -rf web/css/' +
    '&& sudo rm -rf web/bundles/');
});

gulp.task('symfony', ['clean'], function () {
    var cacheClear = exec('app/console ca:cl ' +
    '&& app/console ca:cl --env=prod --no-debug ');

    cacheClear.stdout.on('data', function (data) {
        console.log(data);
    });

    cacheClear.stderr.on('data', function (data) {
        console.log('ERROR   ->   ', data);
    });

    cacheClear.on('exit', function () {
        console.log('Process Complete, cache was reset.');
    });

    return cacheClear;
});

gulp.task('less', function() {
    var config = {
        less: {
            paths: [ path.join(__dirname, 'less', 'includes') ]
        },
        output: paths.styles.output.dev
    };

    if(/prod/.test(env)) {
        config.output = paths.styles.output.prod;
        config.less.compress = 'true';
        uglifycss();
    }

    return gulp.src([paths.styles.main])
        .pipe(less(config.less))
        .pipe(gulp.dest(config.output));
});

gulp.task('bower', function() {
    return bower().pipe(gulp.dest(paths.javascripts.vendors))
});

gulp.task('js', function(cb){

    var options = {
        appDir: paths.javascripts.root,
        mainConfigFile: paths.javascripts.root + '/common.js',
        baseUrl: './',
        dir: paths.javascripts.output.dev,
        skipDirOptimize: true,
        keepBuildDir: true,
        optimize: "none",
        locale: "en_US",
        removeCombined: true,
        modules: [
            {
                name: 'common',
                include: [
                    'jquery',
                    'bootstrap',
                    'underscore',
                    'backbone',
                    'marionette',
                    'underscore.string',
                    'parsley',
                    'jquery-cookie',
                    'bootstrap-multiselect'
                ]
            },
            {
                name: 'apps/login/login_app',
                exclude: ['common']
            }
        ]
    };

    if(/prod/.test(env)) {
        options.dir = paths.javascripts.output.prod;
        options.removeCombined = true;
        options.skipDirOptimize = false;
        options.keepBuildDir = false;
        options.uglify2 = {
            output: {
                beautify: false
            },
            compress: {
                sequences: true
            },
            warnings: true,
            mangle: true
        };
    }

    rjs(options, function (buildResponse) {
        console.log('build response', buildResponse);
        cb();
    }, cb);

});

gulp.task('watch', function () {
    var onChange = function (event) {
        console.log('File '+event.path+' has been '+event.type);
    };
    gulp.watch(paths.styles.root + '/**/*.less', ['less'])
        .on('change', onChange);
    gulp.watch(paths.javascripts.root + '/**/*.js', ['js'])
        .on('change', onChange);
});

gulp.task('default', ['less', 'js']);
gulp.task('newcache', ['symfony', 'less', 'js']);