prevent scoped node_modules within node_modules

Question

When I use npm install, there are certain node packages that gets installed that contains nested node modules.

Like this:

-node_modules
    -packageA
        +js
        -node_modules     <--- needs to be removed/ignored
             +jquery
    -packageA-sub1
        +js
        -node_modules     <--- needs to be removed/ignored
             +jquery

Is there a way to specify which packages not to include a nested scoped node_module?

In my case, there are packages that are including jquery (packageA and packageA-sub1, sub2, sub3, sub4, etc), and it's messing up my website because I already include jquery in a few of my plugins. The only way to remedy this is by manually deleting the node_module folder inside the packageA folder.

I tried .npmignore but that doesn't seem to work:

packageA/node_modules/
packageA/node_modules
/packageA/node_modules
/packageA/node_modules/

I'm using npm 5.8

Answer 1

You can flatten the node_modules hierarchy, when modules share dependencies with the same version, using npm dedupe

The documentation describes npm dedupe as follows:

Searches the local package tree and attempts to simplify the overall structure by moving dependencies further up the tree, where they can be more effectively shared by multiple dependent packages.