Worked on the SalesforceCommerceCloud/pwa-kit repository to enhance the reliability of error handling in the template-retail-react-app by developing comprehensive unit tests for the base error component. Focused on improving test isolation and setup, the work included restoring window.location and resetting modules between tests to ensure a clean state and prevent side effects. Leveraged JavaScript, React, and Jest to expand test coverage, covering navigation, support links, and custom error messages. Additionally, streamlined the CI and release process by skipping changelog generation, resulting in faster feedback cycles and more efficient releases without introducing functional changes to the application code.