Yarn workspace, react, monorepo issue with conflict library version - reactjs

Question

I'm experimenting with yarn workspace monorepo. It is consisting of a TestProject created with create-react-app, and a SharedLib1 which is created with create-react-library. TestProject imports code from SharedLib1. The problem being, TestProject uses react-scripts 3.3.0 which is dependent on babel-jest ^24.9.0, while SharedLib1 uses react-scripts-ts ^2.16.0 which is dependent on babel-jest 22.4.4. When running yarn start in TestProject, it complains:
The react-scripts package provided by Create React App requires a dependency:
"babel-jest": "^24.9.0"
Don't try to install it manually: your package manager does it automatically.
However, a different version of babel-jest was detected higher up in the tree:
/monoRepo/node_modules/babel-jest (version: 22.4.4)
I could disable the error by setting SKIP_PREFLIGHT_CHECK=true in TestProject or manually upgrade the react-scripts inside SharedLib1, but I'd like to know if there's a better way of handling this.
myMonorepo
-web
-SharedLib1
-package.json
-TestProject
-package.json
-package.json
Package.json of myMonoRepo:
{
"name": "my-mono-repo",
"version": "0.1.0",
"private": true,
"workspaces": [
"web/*"
],
"nohoist": [
"**/babel-jest",
"**/babel-jest/**"
]
}
Package.json of myMonoRepo:
{
"name": "test-proj",
"version": "0.1.0",
"private": true,
"dependencies": {
...
"shared-lib-1": "^1.0.0"
}
}
And the test code App.tsx:
import React from 'react';
import TestComp from 'shared-lib-1';
import './App.css';
const App: React.FC = () => {
return (
<div className="App">
<TestComp text={'aaa'}/>
Learn React
</div>
);
}
export default App;
There is a babel-jest 24.9.0 inside the node_modules of TestProj and another 22.4.4 inside the node_modules of myMonoRepo

Answer 1

This is very similar, if not the same, to an issue opened on the GH repo for create-react-app and you may find additional information there.
That said, you might try moving babel-jest to a devDependency instead of a package dependency. If that does not work, you might try Selective dependency resolutions, where you can force your project to a specific version of babel-jest -
"resolutions": {
"babel-jest": "^24.9.0",
"shared-lib-1": "^1.0.0"
}