webpack.config.js

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

const prod = process.env.NODE_ENV === "production";

module.exports = {
  mode: prod ? "production" : "development",
  entry: path.join(__dirname, "src", "index.tsx"),
  output: {
    path: path.resolve(__dirname, "dist")
  },
  module: {
    rules: [
      {
        test: /\.(ts|tsx)$/,
        exclude: /node_modules/,
        resolve: {
          extensions: [".ts", ".tsx", ".js", ".json"]
        },
        use: "ts-loader"
      },
      {
        test: /\.?js$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader",
          options: {
            presets: ["@babel/preset-env", "@babel/preset-react"]
          }
        }
      }
    ]
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: path.join(__dirname, "src", "index.html")
    })
  ]
};