@hwbdev/peer-dependency

This package is used to test the "peerDependencies" keyword in package.json. If package A lists package B as a peer dependency, it means any package that uses A must install B.

If we are currently in package ROOT, and we run npm i @hwbdev/peer-dependency, two things can happen:

• In node v16 (and npm v8), npm will also install @hwbdev/say-something since it's listed as a peer dependency.
• in node v14 (npm 6), npm will give a warning and not install @hwbdev/say-something

If we run npm i @hwbdev/peer-dependency @hwbdev/peer-dependency-two, npm will give an error since both package list @hwbdev/say-something as a peer dependency, but their versions mismatch.