Developed a linter autofix feature for the oxc-project/oxc repository that automatically converts string concatenations to template literals, streamlining code readability and maintainability. The implementation involved porting ESLint’s prefer-template autofix logic to Rust, with careful handling of edge cases such as escaping, backtick sequences, unescaping, comment preservation, and octal escape detection. Over sixty automated tests and a snapshot update were included to ensure regression safety and comprehensive coverage. This work leveraged Rust programming, automated testing, and code refactoring skills to enhance developer productivity by reducing manual refactoring and ensuring consistent application of modern JavaScript string practices.