gulpfile.js

'use strict';

var gulp = require('gulp');
var $    = require('gulp-load-plugins')();

gulp.task('clean', function () {
    return gulp.src(['dist/'], { read: false })
        .pipe($.clean());
});

gulp.task('styles', function () {
    gulp.src('examples/theme/css/**/*.css', { read: false })
        .pipe($.clean());

    gulp.src('examples/theme/sass/**/*.scss')
      .pipe($.compass({
        time        : true,
        comments    : false,
        style       : 'nested',
        config_file : 'examples/theme/config.rb',
        css         : 'examples/theme/css',
        sass        : 'examples/theme/sass',
        require     : './src/ruby/parentsSelector.rb'
      }))
      .pipe($.size({ title: 'Example css before optimization' }))
      .pipe($.rename(function (path) {
        path.basename += ".opt";
      }))
      .pipe($.combineMediaQueries())
      .pipe($.csso())
      .pipe($.size({ title: 'Example css after optimization' }))
      .pipe(gulp.dest('examples/theme/css'));

});

gulp.task('default', ['clean'], function () {
    gulp.src(["src/**/*.scss", "!src/_mvs.scss"])
      .pipe($.order([
        "_variables.scss",
        "functions/_number.scss",
        "functions/_string.scss",
        "functions/_list.scss",
        "functions/_map.scss",
        "functions/_mvs.scss"
      ]))
      .pipe($.concat("mvsass.scss"))
      .pipe(gulp.dest("dist/"))
      .pipe($.size({ title: 'Combined mvsass.scss' }));

    gulp.src(["src/ruby/*.rb"])
      .pipe(gulp.dest("dist/"))
      .pipe($.size());
});