During April 2026, this developer enhanced the mui/material-ui repository by implementing custom package name support in the v9 system props codemod. Using JavaScript and leveraging codemod development and testing skills, they addressed the challenge of incorrect transformations when multiple packages have similar names. Their solution allows the codemod to recognize and handle custom package names, improving the accuracy of import migrations and reducing upgrade risks. This targeted feature increases the flexibility and robustness of the migration tooling, streamlining the developer experience and ensuring more reliable code transformations during library upgrades without introducing new bugs or regressions.