[paulirish]

I've been using a chrome extension to inject a link to this npm dependency viewer whenever I'm on a module's page: http://npm.anvaka.com/#/view/2d/react-router

Really recommend it. As you can see, react-router's deps are actually extremely conservative. Webpack, another awesome project, gives a good example of a bigg dep tree: http://npm.anvaka.com/#/view/2d/webpack