The list is truncated in web view on Github. If you use Visual Studio they all have nuget packages which lets you search for (and add them) easily to a project.

The directory is too big for GitHub's web view, unfortunately. The type definitions are moving to npm, so hopefully they'll be easier to search/view.

Not sure if you're being serious but GitHub truncates to 1000 files/directories.

You can install typings (npm install -g typings) and then search for type definitions. For hapijs, it would be `typings search hapi`. Then you can install using `typings install dt~hapi --global --save`.