function postPlugins() {
const plugins = [];
plugins.push(discardComments());
plugins.push(minifyGradients());
plugins.push(reduceTransforms());
// see https://github.com/ai/browserslist#queries
plugins.push(autoprefixer({browsers: ['last 3 versions'], cascade: false}));
plugins.push(convertValues({length: false}));
plugins.push(calc());
plugins.push(colormin());
plugins.push(orderedValues());
plugins.push(minifySelectors());
plugins.push(minifyParams());
plugins.push(normalizeCharset({add: false}));
// minify-font-values should be run before discard-unused
plugins.push(minifyFontValues());
plugins.push(discardUnused());
plugins.push(normalizeUrl);
plugins.push(cssnanoCore());
// Optimisations after this are sensitive to previous optimisations in
// the pipe, such as whitespace normalising/selector re-ordering
plugins.push(mergeIdents());
plugins.push(mergeLonghand());
plugins.push(discardDuplicates());
plugins.push(mergeRules());
plugins.push(discardEmpty());
plugins.push(uniqueSelectors());
return plugins;
}
module.exports = function() {
'use strict';
var root = path.resolve('./src/styles');
gulp.src(root + '/index.css')
.pipe(plumber())
.pipe(postcss([atImport(), colormin(), autoprefixer()], {
root: root,
path: root,
from: root + '/index.css'
}))
.pipe(concat('main.css'))
.pipe(gutil.env.dist ? minifyCss() : gutil.noop())
.pipe(gulp.dest('./app/styles/'))
.pipe(reload({stream: true}));
};