The initial set of dependencies is being installed via npm, the it installs its own dependencies via ied if told so: https://github.com/alexanderGugel/ied#installation

This is a "cool" feature during development, since it's a nice proof of concept.

Originally I checked in the node_modules directory, but then reddit was shitting on me as usual (yes, you shouldn't check in node_modules in an actual app, but this is PACKAGE MANAGER!). As far as I know, npm has also its own dependencies check in + a ton of packages as tarballs for tests, so I might do that later.