gistfile1.txt

// Versión compilada de estilos en ./web-app/build/css
gulp.task('cssBuild', function() {
    Object.keys(bundles.css).forEach(function(bundle) {
        // console.log(collection);
        console.log(bundle);
        console.log(bundles.css[bundle]);
        return gulp.src(bundles.css[bundle])
            .pipe($.concat(bundle + '.css'))
            .pipe($.replace('../images','../assets'))
            .pipe($.replace('../css/assets','../assets'))
            .pipe($.size({
                title: bundle + '.css size: '
            }))
            .pipe($.minifyCss())
            .pipe($.size({
                title: bundle + '.css.min size: '
            }))
            .pipe(gulp.dest(src.build.styles));
    });
});