Worked on the google/flax repository to migrate the test suite’s array access syntax from the deprecated .value attribute to bracket notation, aligning the codebase with updated API conventions. This focused refactor involved updating multiple test files using Python and JAX, emphasizing code readability and maintainability. The approach reduced the risk of API misalignment and simplified future migrations by standardizing test syntax. By implementing these changes through targeted commits, the developer improved consistency across the test suite and made onboarding easier for new contributors. The work demonstrated attention to detail in refactoring and testing, ensuring the suite remains robust and up-to-date.