Worked on the laravel/framework repository to enhance the Migration Repository API by improving type safety and documentation. Focused on backend development using PHP, the work involved correcting the return type annotation for the getMigrationBatches method to accurately represent migration names as string keys and batch numbers as integer values. Additionally, addressed a PHPDoc typo in the MigrationRepositoryInterface delete method, ensuring that developer documentation aligns with the actual codebase. These updates improved static analysis and IDE support for the 13.x branch, reducing the risk of type-related bugs in migrations and contributing to a more robust and maintainable backend codebase.