sass: {
        src: ['./sass/**/*.scss', '!./sass/primeng/**'],
        dest: './css/'
    },

gulp.task('sass', function () {
    return gulp.src(paths.sass.src)
        .pipe(changed(paths.sass.dest))
        .pipe(gulpif(global.full, sourcemaps.init()))
        .pipe(sass({ outputStyle: global.full ? 'compressed' : 'nested' }).on('error', sass.logError))
        .pipe(gulpif(global.full, sourcemaps.write('maps')))
        .pipe(gulp.dest(paths.sass.dest))
});