test-repo/tests/integration/cli/config/package/package.json

{
  "name": "my-package",
  "version": "9000",
  "prettier": {
    "tabWidth": 3,
    "overrides": [
      {
        "files": "*.ts",
        "options": {
          "tabWidth": 5
        }
      }
    ]
  }
}