The composer.json for the package

composer.json

// truncated composer.json file for the packge:
  "autoload": {
    "psr-4": {
        "Namespace\\": "src/"
    }
  }
}




{
  // truncated composer.json for application
  "require": {
    // Other dependencies
    "PackageVendor\PackageName": "*" 
  }
  // truncated to show important parts for local dev of package.
  "repositories": [
    {
      "type": "path",
      "url": "./../path/to/package
    }
  ],
  "minimum-stability": "dev"
  
}