webpack.config.js

const path = require("path");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");

module.exports = {
  entry: {
    app: "./src/index.js",
  },
  mode: "development",
  devtool: "inline-source-map",
  devServer: {
    contentBase: "./dist",
    hot: true,
  },
  module: {
    rules: [
      {
        test: /\.css$/i,
        use: [
          { loader: MiniCssExtractPlugin.loader },
          "css-loader",
          "postcss-loader",
        ],
      },
      {
        test: /\.js$/,
        use: "babel-loader",
        exclude: /node_moduels/,
      },
    ],
  },
  plugins: [
    new MiniCssExtractPlugin({
      filename: `css/[name].css`,
      chunkFilename: `css/chunks/[name].css`,
    }),
    new HtmlWebpackPlugin({
      title: "HMR",
    }),
  ],
  output: {
    filename: "[name].bundle.js",
    path: path.resolve(__dirname, "dist"),
  },
};