webpack.config.js

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

const webpack = require("webpack");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const Dotenv = require("dotenv-webpack");

module.exports = {
  mode: prod ? "production" : "development",
  entry: "./index.tsx",
  output: {
    path: __dirname + "/dist/",
  },
  module: {
    rules: [
      {
        test: /\.(ts|tsx)$/,
        exclude: /node_modules/,
        resolve: {
          extensions: [".ts", ".tsx", ".js", ".json"],
        },
        use: "ts-loader",
      },
      {
        test: /\.scss$/,
        exclude: /node_modules/,
        use: [
          {
            loader: prod ? "style-loader" : MiniCssExtractPlugin.loader,
          },
          {
            loader: "css-loader",
          },
          {
            loader: "sass-loader",
          },
        ],
      },
    ],
  },
  devServer: {
    port: 3000,
    hot: true,
    open: true,
    historyApiFallback: true,
    proxy: {
      "/api": {
        target: "http://localhost:9000",
        pathRewrite: { "^/api": "" },
        changeOrigin: true,
      },
    },
  },
  devtool: prod ? undefined : "source-map",
  plugins: [
    new HtmlWebpackPlugin({
      template: "index.html",
    }),
    new MiniCssExtractPlugin(),
    new webpack.DefinePlugin({
      "process.env": {
        NODE_ENV: JSON.stringify("development"),
      },
    }),
    new webpack.ProvidePlugin({
      process: "process/browser",
    }),
    new webpack.ProvidePlugin({
      Buffer: ["buffer", "Buffer"],
    }),
    new Dotenv(),
  ],
  resolve: {
    fallback: {
      crypto: false,
      assert: false,
      stream: require.resolve("stream-browserify"),
      os: require.resolve("os-browserify/browser"),
      https: require.resolve("https-browserify"),
      http: require.resolve("stream-http"),
      path: require.resolve("path-browserify"),
    },
  },
};