webpack.prod.js

// -------------------------------------------------------------------
// This configuration file is for production use
// You can make changes to this file to suit your production need
// Please refer to this webpack documentation for further information
// https://webpack.js.org/guides/production/
// -------------------------------------------------------------------

const merge = require("webpack-merge");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const common = require("./webpack.common.js");

module.exports = merge(common, {
  mode: "production",
  devtool: "source-map",
  module: {
    rules: [
      {
        test: /\.css$/,
        use: [MiniCssExtractPlugin.loader, "css-loader"]
      },
      {
        test: /\.scss$/,
        use: [MiniCssExtractPlugin.loader, "css-loader", "sass-loader"]
      }
    ]
  },
  plugins: [
    new MiniCssExtractPlugin({
      filename: "style.css"
    })
  ]
});