In March 2026, Inju Kim enhanced target resolution performance in the tuist/tuist repository by refactoring the PackageInfoMapper component. The work involved replacing array iteration with a dictionary-based lookup, which streamlined the command-line interface’s target resolution process. This optimization, implemented in Swift and focused on backend development, reduced build times and improved the overall developer experience by enabling faster and more efficient target resolution. The change demonstrated a practical application of data structure optimization and performance-focused refactoring. While the scope was limited to a single feature, the solution addressed a clear performance bottleneck with a targeted, maintainable approach.