对等依赖的对等依赖

Question

Here is my current modules hierarchy: I'm writing the Module (which has green background and is inside dotted square).
It has DepA dependency which has DepB peer dependency.

My module is kind of a config-helper for the main App .
Module does not use DepB itself.
But it helps to work with DepB via DepA .

The App works with DepB and has it as a dependency (regular).

So, I was thinking that this DepB should be a peer dependency in the Module .
But that does not work.
It leads to unmet peer dependency problem: DepA expects to find it "inside" Module .

Why can't I proxy that peer dependency to the App which actually uses it?
What are the best practices for that kind of situation?

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Update

The question is not relevant.
See my answer.

Answer 1

OMG, that was my fault!

While testing Module I did require('../') instead of require('@my/module') .
By that I was trying to avoid re-installation on every change.
That was the root of all incorrect module resolution issues.