You can do a lot with this!
The base image gives you both Node and Python (because some Node dependencies require Python for compilation...), so you get Node v24.9.0 and Python 3.12.11 to work with.
You may be a little scared of that giant "node_modules" folder on the left: those are all the things this Node project relies on, and we basically don't care about what's in that folder: simply click the folder icon to the left of "node_modules" to collapse the folder, and suddenly the project will look a lot more manageable =)
(Although if you want to browse the dependency content, or even change what they do, you can: it's your project, dig in!)