Why are there many different folders in node_modules?

Question

npm

I updated nodejs and why after I try to put any module on an empty project, a bunch of left folders are installed with it, is this after the update? Or did I do something wrong, that now a bunch of unclear what is being installed?
For example, I installed only express and with it a lot of everything:
https://gyazo.com/83561db44ab70108404dce39978118f9

Answer 1

Each module has its own dependencies. Previously, they were placed in the node_modules folder of the corresponding module, and starting from some recent version, all modules are installed in the root node_modules folder. This reduces the number of files in the project, its size and eliminates problems associated with the limitation on the length of the file name in Windows.

Answer 2

The new npm puts all dependencies on the root. and dependency dependencies.
They used to load into subfolders of subfolders of subfolders.....