Angular2 Webpack Starter is prototype Angular2 application for you to start build application. You can reference their Github for the latest information, https://github.com/AngularClass/angular2-webpack-starter.
First you'll need to install or make sure your npm and node is correct version,
Node >= 5.0 & NPM >= 3
Then, you'll need to install
npm install -g webpack
You could also check webpack-bundle-size-analyzer tool.