chatbridge/client/config/webpack.prod.js

const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const CssMinimizerPlugin = require('css-minimizer-webpack-plugin')
const { merge } = require('webpack-merge')
const path = require( 'path' );
const common = require('./webpack.common.js')

module.exports = merge(common, {
  mode: 'production',
  devtool: 'source-map',
  module: {
    rules: [
      {
        test: /\.(s[ac]ss)$/i,
        use: [
          MiniCssExtractPlugin.loader,
          'css-loader',
          'sass-loader',
        ],
      },
      {
        test: /\.css$/,
        use: [
          MiniCssExtractPlugin.loader,
          'css-loader'
        ]
      }
    ],
  },
  optimization: {
    minimize: true,
    minimizer: [new CssMinimizerPlugin(), '...'],
  },
  performance: {
    hints: false,
    maxEntrypointSize: 512000,
    maxAssetSize: 512000,
  },
  plugins: [new MiniCssExtractPlugin()]
})