postcss.config.js

const cssnano = require('cssnano')
// const doiuse = require('doiuse')
const postcssDiscardEmpty = require('postcss-discard-empty')
// const postcssAutoreest = require('postcss-autoreset')
const postcssPresetEnv = require('postcss-preset-env')
const postcssSorting = require('postcss-sorting')
const stylelint = require('stylelint')
const purgecss = require('@fullhuman/postcss-purgecss')
const combineSelectors = require('postcss-combine-duplicated-selectors')

// is this "fs" needed? ... optimize-css-mq has it listed
// const fs = require("fs");


module.exports = {
  plugins: [
    // doiuse(""),
    postcssPresetEnv({stage: 2}),
    postcssSorting({}),
    postcssDiscardEmpty({}),
    stylelint({
      /* your options */
      "fix": true
    }),
    combineSelectors({
      removeDuplicatedProperties: true
    }),
    // purgecss({
    //   content: [
    //     './**/*.php',
    //     './**/*.tpl',
    //     "./**/*.js"
    // ],
    // safelist: ['feed-title','feed-item-title', 'feed-item-desc' ]
    // }),
    cssnano({
      preset: ['default', {
        colormin: false,
      }],
    })
  ]
}