Worked on the LadybirdBrowser/ladybird repository to enhance code formatting consistency and test reliability within the JavaScript codebase. Focused on integrating Prettier by removing files from .prettierignore and partially formatting using-declaration.js, aligning the project with modern formatting standards. Addressed a test syntax error by refining the scoping of using declarations, which resolved a SyntaxError and improved test execution reliability. These changes laid the groundwork for a future repository-wide formatting pass, reducing formatting-related issues in code reviews. Demonstrated proficiency in JavaScript, code formatting, and testing, contributing to improved maintainability and smoother continuous integration workflows for the project.