afv-library/samples/ui-bundle-template-app-react-sample-b2x/sfdx-project.json

{
  "packageDirectories": [
    {
      "path": "force-app",
      "default": true
    }
  ],
  "name": "MyProject",
  "namespace": "",
  "sfdcLoginUrl": "https://login.salesforce.com",
  "sourceApiVersion": "66.0"
}