Minifying CSS

Minification is a process that should be done mainly for production code. It's going to be hard to work on minified files during the development process, so we need to minify our code for production code only. It is possible to enable minification in SASS or Compass compilation by adding a proper flag (--compressed). We will additionally use an external tool for this, to minify the code after the uncss process. What we need to do now is to install gulp-clean-css:

npm install --save gulp-clean-css

Now, minify the result of the uncss process. We will create a prod directory in which we will store our final version of the project. Now let's import gulp-clean-css:

cleanCSS = require('gulp-clean-css')

Let's create the sections needed in gulpfile.js:

gulp.task('clean-css-production', function () {
   return gulp.src('prod/css/main.css', {read: false})
       .pipe(rimraf({force: true}));
});

gulp.task('sass-production',['clean...