old_contents: const PostcssNormalize = require('postcss-normalize');
  const PostcssPresetEnv = require('postcss-preset-env');
  
  module.exports = {
  	plugins: [
  		PostcssPresetEnv(),
  		PostcssNormalize()
  	]
  };
  
new_contents: const PostcssNormalize = require('postcss-normalize');
  const PostcssPresetEnv = require('postcss-preset-env');
  const Stylelint = require('stylelint');
  
  module.exports = {
  	plugins: [
  		Stylelint(),
  		PostcssNormalize(),
  		PostcssPresetEnv()
  	]
  };
  
subject: Integrate Stylelint with Webpack build