webpack.config.js

const path = require("path");
const HTMLWebpackPlugin = require("html-webpack-plugin");
const Dotenv = require("dotenv-webpack");

module.exports = {
  entry: "./src/index.tsx",
  output: {
    filename: "bundle.js",
    path: path.resolve(__dirname, "dist"),
    publicPath: "/",
  },
  resolve: {
    extensions: [".tsx", ".ts", ".js"],
  },
  module: {
    rules: [
      {
        test: /.(js|jsx|ts|tsx)$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader",
          options: {
            presets: [
              "@babel/preset-env",
              "@babel/preset-react",
              "@babel/preset-typescript",
            ],
          },
        },
      },
      {
        test: /\.css$/i,
        use: ["style-loader", "css-loader", "postcss-loader"],
      },
    ],
  },
  devServer: {
    historyApiFallback: true,
  },
  plugins: [
    new HTMLWebpackPlugin({
      template: "./public/index.html",
    }),
    new Dotenv({
      systemvars: true,
    }),
  ],
};