Worked on enhancing the reliability of the import-defer test suite in the tc39/test262 repository by addressing two specific issues that affected test accuracy and stability. Applied JavaScript testing practices to correct the usage of assert.deepEqual by introducing the necessary includes directive, and resolved a typo in another assertion to ensure proper test validation. These targeted improvements reduced flakiness in continuous integration runs, resulting in a more stable and predictable test environment. Utilized JavaScript, debugging skills, and familiarity with Test262 conventions and git version control to deliver changes that support faster feedback and clearer expectations for future test authors.