webpack.config.js

const path = require("path");
const HtmlWebpackPlugin = require("html-webpack-plugin");

module.exports = (env) => {
  return {
    entry: "./src/index.ts",
    resolve: {
      extensions: [".ts", ".js"],
    },
    output: {
      path: path.join(__dirname, "/dist"),
      filename: "build.js",
    },
    module: {
      rules: [
        {
          test: /\.(ts|tsx)$/,
          exclude: [/node_modules/, /dist/],
          use: [
            {
              loader: "babel-loader",
              options: {
                presets: [
                  "@babel/preset-env",
                  "@babel/preset-typescript",
                ],
                plugins: [
                  "@babel/proposal-class-properties",
                  "@babel/proposal-object-rest-spread",
                ],
              },
            },
            {
              loader: "ts-loader",
            },
          ],
        },
      ],
    },
    devServer: {
      contentBase: path.join(__dirname, "build"),
      historyApiFallback: true,
      host: "0.0.0.0",
      compress: true,
      hot: true,
      port: 4000,
      publicPath: "/",
    },
    devtool: "source-map",
    plugins: [
      new HtmlWebpackPlugin({
        template: "./template/index.html",
      }),
    ],
  };
};