webpack.config.js

const ReactRefreshWebpackPlugin = require("@pmmmwh/react-refresh-webpack-plugin");
const webpack = require("webpack");
const path = require("path");
const HtmlWebpackPlugin = require("html-webpack-plugin");

module.exports = {
  mode: "development",
  entry: "./srctest/TestView.js",
  devServer: {
    contentBase: "./dist",
    hot: true,
  },
  plugins: [
    new webpack.HotModuleReplacementPlugin(),
    new ReactRefreshWebpackPlugin(),
    new HtmlWebpackPlugin({
      template: "public/index.html",
    }),
  ],
  output: {
    filename: "index_bundle.js",
    path: path.resolve(__dirname, "dist"),
  },
  module: {
    rules: [
      {
        test: /\.m?js$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader",
          options: { plugins: [require.resolve("react-refresh/babel")] },
        },
      },
      {
        test: /\.html$/,
        loader: "html-loader",
      },
      {
        test: /\.css$/i,
        use: ["style-loader", "css-loader"],
      },
      {
        test: /\.js$/,
        enforce: "pre",
        use: ["source-map-loader"],
      },
    ],
  },
};