Contributed to the vitest-dev/vitest repository by delivering a feature that enhanced configuration flexibility for users. Developed and implemented a change allowing hyphens in Vitest project configuration file names, addressing a specific issue with configuration resolution. This work involved JavaScript and TypeScript, focusing on configuration management and testing to ensure robust handling of various file naming patterns. The solution was developed collaboratively, reinforcing code quality through peer review and integration. By reducing friction in the setup process, the update enabled more scalable and adaptable project configurations, directly improving the reliability and usability of Vitest’s configuration system for development teams.