Well yes, Require.JS is not strictly speaking a dependency injector (however you can use it as one), but underlying AMD pattern is a very good example of IoC. A

Well yes, Require.JS is not strictly speaking a dependency injector (however you can use it as one), but underlying AMD pattern is a very good example of IoC. And this allows all kinds of interesting stuff to do with your codebase - for example, use Require.JS for development, simplified module loader for production and, if Require.js configs become messy in your specific project, you can just load a module for your tests purposes directly, passing all of it's dependencies manually. I don't see what exactly Angular's dependency management adds to this.