webpack.config.js

const path = require("path");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const { CleanWebpackPlugin } = require("clean-webpack-plugin");

module.exports = {
  entry: {
    main: "./src/index.js",
  },
  output: {
    path: path.join(__dirname, "dist"),
  },
  mode: "development",
  devtool: "source-map",
  module: {
    rules: [
      {
        test: /\.(js|mjs|jsx)$/,
        loader: require.resolve("babel-loader"),
        include: path.join(__dirname, "src"),
      },
      {
        test: /\.(sc|c|sa)ss$/,
        use: [
          {
            loader: "style-loader",
          },
          {
            loader: "css-loader",
          },
          {
            loader: "scoped-css-loader",
          },
          {
            loader: "postcss-loader",
            options: {
              postcssOptions: {
                plugins: ["postcss-nested"],
              },
            },
          },
        ],
      },
    ],
  },
  plugins: [
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin({
      template: "index.html",
    }),
  ],
  resolve: {
    extensions: [".mjs", ".js", ".json", ".jsx"],
  },
  devServer: {
    port: 8080,
  },
};