webpack.config.dev.js

const path = require("path");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const Dotenv = require("dotenv-webpack");
// const BundleAnalyzerPlugin =  require("webpack-bundle-analyzer").BundleAnalyzerPlugin;
module.exports = {
  mode: "development",
  entry: "./src/main.ts",
  module: {
    rules: [
      {
        test: /\.tsx?$/,
        exclude: /(node_modules|bower_components)/,
        use: {
          loader: "babel-loader",
          options: {
            presets: ["@babel/preset-env", "@babel/preset-typescript"],

            plugins: ["@babel/plugin-transform-runtime"],
          },
        },
      },
      {
        test: /\.html$/i,
        loader: "html-loader",
      },
      {
        test: /\.css$/,
        use: [MiniCssExtractPlugin.loader, "css-loader"],
      },
    ],
  },
  resolve: {
    extensions: [".tsx", ".ts", ".js"],
  },
  plugins: [
    new HtmlWebpackPlugin({
      inject: true,
      template: "./src/index.html",
      filename: "./index.html",
    }),
    new Dotenv(),
    new MiniCssExtractPlugin({
      filename: "assets/[name].[contenthash].css",
    }),
    // new BundleAnalyzerPlugin(),
  ],
  output: {
    filename: "[name].[contenthash].js",
    path: path.resolve(__dirname, "dist"),
  },
  devServer: {
    static: {
      directory: path.join(__dirname, "dist"),
    },
    compress: true,
    open: true,
    port: 9000,
  },
};