webpack.config.js

const path = require("path");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const CopyPlugin = require("copy-webpack-plugin");

module.exports = {
  mode: "production",
  entry: "./src/index.js",
  output: {
    filename: "index.js",
    path: path.resolve(__dirname, "dist"),
  },
  plugins: [
    new CopyPlugin({
      patterns: [
        { from: "src/fonts", to: "assets/fonts" },
        { from: "src/icons", to: "assets/icons" },
        { from: "src/images", to: "assets/images" },
      ],
    }),
    new MiniCssExtractPlugin({
      filename: ({ chunk }) => `${chunk.name.replace("/js/", "/css/")}.css`,
    }),
  ],
  module: {
    rules: [
      {
        test: /\.css$/,
        use: [MiniCssExtractPlugin.loader, "css-loader"],
      },
      {
        test: /\.s[ac]ss$/i,
        use: [
          // Creates `style` nodes from JS strings
          "style-loader",
          // Translates CSS into CommonJS
          "css-loader",
          // Compiles Sass to CSS
          "sass-loader",
        ],
      },
    ],
  },
};