index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { AppContainer } from "react-hot-loader";

import RootContainer from "./RootContainer";

const node = document.getElementById("app");
const render = (Component: any) => ReactDOM.render(<AppContainer><Component /></AppContainer>, node);

render(RootContainer);

module.hot.accept(['./RootContainer.tsx'], () => {
  console.log("RERENDER");
  const RootContainer = require("./RootContainer.tsx").default;
  render(RootContainer);
});

RootContainer.tsx

import * as React from "react";

export default () => <div>Hello</div>;

webpack.config.js

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

const root = path.resolve(__dirname, "../");

module.exports = {
  entry: [
    "react-hot-loader/patch",
    "webpack-dev-server/client?http://localhost:8080",
    "webpack/hot/only-dev-server",
    path.resolve(root, "src/index.tsx"),
  ],
  output: {
    filename: "[name].js",
    chunkFilename: "[name].js",
    publicPath: "/",
  },
  devtool: "inline-source-map",
  devServer: {
    contentBase: path.join(root, "src"),
    publicPath: "/",
    hot: true,
    historyApiFallback: true,
  },
  resolve: {
    extensions: [".ts", ".tsx", ".js", ".jsx", ".json"],
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        loader: "babel-loader",
        options: {
          presets: [["es2015", { modules: false }], "react"],
          plugins: ["transform-class-properties", "transform-object-rest-spread", "react-hot-loader/babel"],
        },
        include: path.resolve(root, "src/"),
      },
      {
        test: /\.(c|sa|sc)ss$/,
        loaders: [
          {
            loader: "style-loader",
          },
          {
            loader: "css-loader",
            options: {
              importLoaders: 1,
            },
          },
          {
            loader: "sass-loader",
          },
        ],
      },
      {
        test: /\.tsx?$/,
        loaders: [
          {
            loader: "react-hot-loader/webpack",
          },
          {
            loader: "awesome-typescript-loader",
          },
        ],
      },
      {
        enforce: "pre",
        test: /\.js$/,
        loader: "source-map-loader",
      },
      {
        test: /\.woff(2)?(\?v=[0-9]\.[0-9]\.[0-9])?$/,
        loader: "url-loader?limit=10000&mimetype=application/font-woff",
      },
      {
        test: /\.(ttf|eot|svg)(\?v=[0-9]\.[0-9]\.[0-9])?$/,
        loader: "file-loader",
      },
    ],
  },
  plugins: [
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NamedModulesPlugin(),
    new webpack.DefinePlugin({
      "process.env.NODE_ENV": JSON.stringify("development"),
    }),
    new HtmlWebpackPlugin({
      template: path.resolve(root, "src/index.html"),
      chunksSortMode: "dependency",
    }),
  ],
};