Gulpfile for Symfony2 Bundle assets (non-production)

gulpfile.js

var gulp = require('gulp');
var gutil = require('gulp-util');
var sass = require('gulp-ruby-sass');
// var sass = require('gulp-sass');
var jshint = require('gulp-jshint');
var concat = require('gulp-concat');
var rename = require('gulp-rename');
var browserSync = require('browser-sync');

var url = 'site.dev';
var basePath = './path/to/bundle/public/resources';
var assets = {
    scripts: [
        basePath + '/js/**/libs/*.js',
        basePath + '/js/**/plugins/*.js',
        basePath + '/js/**/components/*.js',
    ],
    sass: basePath + '/css/style.scss'
}

gulp.task('browser-sync', function() {
    browserSync.init([
        basePath + '/css/dev.css',
        basePath + '/js/dev.js',
        basePath + '/../views/**/*.html.twig'
        ], {
    	proxy: {
    	    host: url
    	}
    });
});

gulp.task('lint', function() {
    gulp.src(basePath + '/js/**/components/*.js')
    .pipe(jshint())
    .pipe(jshint.reporter('default'))
});

gulp.task('sass', function() {
    gulp.src(assets.sass)
	.pipe(sass({debugInfo: true}))
    .pipe(rename('dev.css'))
	.pipe(gulp.dest(basePath + '/css'))
});

/*  
 * For when they figure this out -- https://github.com/hcatlin/libsass/issues/146
 *
gulp.task('sass', function() {
    gulp.src(paths.base + '/css/style.scss')
        .pipe(sass({ includePaths: [paths.base + '/css'], errLogToConsole: true }))
        .pipe(gulp.dest(paths.base + '/css'));
});
*/

gulp.task('scripts', function() {
    gulp.src(assets.scripts)
	.pipe(concat('dev.js'))
	.pipe(gulp.dest(basePath + '/js'))
});

gulp.task('watch', function() {
    gulp.watch(basePath + '/css/**/*.scss', ['sass']);
    gulp.watch(basePath + '/js/**/components/*.js', ['lint']);
    gulp.watch(basePath + '/js/**/*.js', ['scripts']);
});

gulp.task('default', ['sass','lint','scripts','browser-sync','watch']);

You can try using Gassetic which is an Assetic replacement for Symfony2 using gulp and bower https://github.com/crossborne/gassetic/blob/master/Resources/doc/GasseticAndSymfony2.md

Thanks @ollietb, I'll definitely check that out. The symfony-gulp relationship has always felt rather shoe-horned and didn't really work very well with multiple bundles. Nice to see a solution taking shape 👍