I understood that Ionic cannot handle 'yarn workspace' which build the project with react-app-rewiredhttps://github.com/ionic-team/ionic-cli/issues/4430
As suggested in this post, I configure my monorepo with the multi-app option( https://ionicframework.com/docs/cli/configuration#multi-app-projects)
To valide the project structure, I firstly tried to share a simple constants.

import * as ROLES from '../../../../lib/constants'

but when I launch ionic serve --project=app
Have got this error :
Module not found: You attempted to import ../../../../lib/constants which falls outside of the project src/ directory. Relative imports outside of src/ are not supported.
Project structure :

ionic.config.json

{
  "defaultProject": "myProject",
  "projects": {
    "app": {
      "name": "My First Ionic App",
      "type": "react",
      "root": "packages/app",
      "integrations": {
        "capacitor": {}
      },
    }
  }
}

How to manage to share files and components ?
Thank you