Yarn (or npm) swap nested dependency with a fork

Question

In my package.json I have a package:

{
  "somepackage": "^6.5.1"
}

This package has a dependency (from somepackage's package.json):

{
  "someotherpackage": "^9.4.2"
}

I want to swap someotherpackage to one of its fork. I know of yarn's Selective dependency resolution feature, but I guess that is only for different versions of the same package.

I could as well fork somepackage and change its dependencies manually, swapping someotherpackage to someotherpackage-fork, but if there is another way I would take that.

Thanks!

Answer 1

The mentioned selective dependency resolution feature is the way to go. Under the hood it seems to be resolving packages the same way dependencies does which allows us to do the following:

"resolutions": {
  "**/someotherpackage": "npm:someotherpackage-fork@*"
}

You can also specify which version of your fork you want:

"resolutions": {
  "**/someotherpackage": "npm:[email protected]"
}

I haven't confirmed if this works for Yarn version 2 yet.

Showcase: https://github.com/dimitarnestorov/yarn-resolutions-showcase