Dependency Warning - proper way to implement Yarn Workspace monorepo with CRA with root dependencies?

I am running into an issue when trying to start CRA when I have similar dependencies in the root of my yarn workspace monorepo. I have a .eslintrc in the root of my project along with all of my Eslint/Prettier packages so that all of my projects are able to receive linting/autoformatting.

I just recently added CRA to my monorepo in an attempt to create a new application. This gives me an error message and I did not want to assume that I would not run into any future issues. I am hoping to learn the ideal solution to how to properly use CRA within a yarn workspace monorepo while also being able to have proper linting/autofortmatting via Eslint and Prettier.

Demo repo below.

Is this a bug report?

Maybe Very closely related to https://github.com/facebook/create-react-app/issues/4296. I was unable to decipher a proper solution from this discussion.

Steps to Reproduce

1. Clone demo repo below
2. Run yarn to install dependencies
3. Run yarn workspace my-app start to try to start the application.

Expected Behavior

yarn start succeeds

Actual Behavior

Get error message:

Reproducible Demo

https://github.com/clayhan/cra-yarn-test

Thanks for any help!

[bugzpodder]

I don’t have a public repo, but if you follow these instructions it should just work:

1. in your root (workspace) package.json, add the following nohoist option:

     "**/babel-eslint",
     "**/babel-jest",
     "**/eslint",
     "**/jest",
     "**/webpack-dev-server",
     "**/webpack-cli"
   ]```
2) Make sure you don't have any of these packages in your root (workspace) package.json
3) remove node_modules from the worksapce (root)
do another yarn install
4) ensure your new node_modules/ doesn't contain any of these pacakges.  If there is a matching one then your nohoist is wrong.
5) run yarn start in your cra directory and see that the error should go away.

tldr nohoist should not install the specified packages in your root node_modules.

[stale[bot]]

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