webpack css loader

webpackcss.js

const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const cssnano = require("cssnano");

module.exports = {
  module: {
    rules: [{
        test: /\.scss$/,
        use: [
          MiniCssExtractPlugin.loader,
          {
            loader: "css-loader",
            options: {
              importLoaders: 2,
              modules: { localIdentName: "[hash:base64:4]" } // enables CSS modules
            }
          },
          {
            loader: "postcss-loader",
            options: {
              ident: "postcss",
              plugins: () => [
                 cssnano() // css minifier. uses 'default' preset
              ]
            }
          },
          "sass-loader"
        ]
      }]
   }
}