Can packages have different versions of React?

[simkessy]

Bug description

What is the current behavior?

I have a common library which has React 16.13.1
I have an app in my workspace using React 16.8.1

When I run tests, Jest tries to use React 16.8.1 which is not compatible with the common library. When I look at the common/node_modules, it contains React 16.13.1 but instead Jest is moving up the tree to the root and using the older version of React.

Do all my packages need to match or can I force Common library to use react version in it's node_modules folder?

Command

yarn install && BUILD=client jest --coverage ./src

What is the expected behavior?

Common library and jest should be using the react version declared in it's package.json (16.13.1)
App library should be using React (16.8.1)

Environment

• Node Version: 14.1.0
• Yarn v1 Version: 1.22.4
• OS and version: Lastest Mac Version