webpack.config.js

const webpack = require("webpack");
const path = require("path");

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

const noErrorsPlugin = new webpack.NoEmitOnErrorsPlugin();
const extractCss = new MiniCssExtractPlugin({
  filename: "../css/[name].css",
  allChunks: true,
});

const mode =
  process.env.NODE_ENV === "production" ? "production" : "development";

module.exports = [
  {
    mode,
    name: "browser",
    cache: true,
    entry: ["@babel/polyfill", "./src/client/index.js"],
    output: {
      path: path.join(__dirname, "public/js"),
      filename: "[name].js",
    },
    module: {
      rules: [
        {
          test: /\.js$/,
          loader: "babel-loader",
          options: { presets: ["@babel/env"] },
        },
        {
          test: /\.(scss|css)$/,
          exclude: /node_modules/,
          use: [
            MiniCssExtractPlugin.loader,
            { loader: "css-loader", options: { sourceMap: true } },
            { loader: "postcss-loader", options: { sourceMap: "inline" } },
            { loader: "sass-loader", options: { sourceMap: true } },
          ],
        },
      ],
    },
    plugins: [extractCss, noErrorsPlugin],
    resolve: {
      alias: {
        react: "preact-compat",
        "react-dom": "preact-compat",
        "react-enroute": "preact-enroute",
      },
    },
  },
];