Worked on the tuist/tuist repository to enhance plist template rendering by implementing whitespace preservation for Array-root scalars, addressing a formatting concern in the command-line interface. Leveraged Swift and unit testing to ensure that generated plist files maintain correct spacing, aligning output with established formatting standards. The approach included adding a dedicated test to validate spacing, which helps prevent future formatting regressions and supports code maintainability. Focused on test-driven development and CLI tooling, the work resulted in more reliable plist generation and improved test coverage, contributing to higher code quality and consistency in iOS development workflows for the project.