Create React project using Typescript and Webpack

Update: As of 2018, many things have changed and better version of doing this is available at Typescript site itself: https://www.typescriptlang.org/docs/handbook/react-&-webpack.html

Pre-requisites

In order to follow the steps, typescript, typings, and webpack must be first installed by following command:

npm install -g typescript typings webpack  

Configure Project

1. Create a directory for your project and change directory into it.
2. Initialize Node package: npm init
3. Install React packages: npm install --save-dev react react-dom (and redux react-redux if you want to use it).
4. Install Webpack loader: npm install --save-dev webpack-bundle-tracker ts-loader source-map-loader
5. Link Typescript and Webpack from global to local:

npm link typescript  
npm link webpack  

5. Create a directory for your source. e.g. mkdir src
6. Create Typescript configuration file tsconfig.json in the root of project directory.

{
    "compilerOptions": {
        "outDir": "./bundles/",
        "sourceMap": true,
        "noImplicitAny": false,
        "module": "commonjs",
        "target": "es2015",
        "jsx": "react"
    },
    "exclude": [
        "node_modules"
    ]
}

7. Create Typings configuration file typings.json by issuing command typings init. Then install React's related type definition by following command.

typings install --save --global dt~react dt~react-dom dt~react-redux dt~redux  

8. Create Webpack configuration file webpack.config.js

var path = require('path')  
var webpack = require('webpack')  
var BundleTracker = require('webpack-bundle-tracker')

module.exports = {  
  context: __dirname,
  entry: { main: ['./src/js/index.tsx'] },
  output: {
    path: path.resolve('./bundles'),
    // or '[name]-[hash].js' if you can dynamically load JS, so you don't have to always invalidate cache.
    filename: '[name].js'
  },
  devtool: 'source-map',  // for debugging

  plugins: [
    new BundleTracker({filename: './webpack-stats.json'})
  ],

  module: {
    loaders: [
      { test: /\.tsx?$/, loader: 'ts-loader' }
    ],

    preLoaders: [
      { test: /\.js$/, loader: 'source-map-loader' }
    ]
  },

  resolve: {
    modulesDirectories: ['node_modules'],
    extensions: ['', '.js', '.ts', '.tsx']
  }
}

9. Create Typescript file src/js/index.tsx with following content.

import * as React from 'react'  
import * as ReactDOM from 'react-dom'

const HelloWorld = _ => <h1>Hello, world!</h1>

ReactDOM.render(<HelloWorld />, document.getElementById('content'))

Note that to use React in Typescript, the module react must always be loaded.

10. Run webpack to generate bundles/main.js file.
11. Create index.html and refer to the generated file.

<!DOCTYPE html>  
<html>  
<body>  
    <div id="content" />
    <script type="text/javascript" src="bundles/main.js"></script>
</body>  
</html>  

12. Open index.html on a browser and that's it!