Naoki Aikawa developed a dynamic runtime file loading feature for the promptfoo/promptfoo repository, enabling the application to load JavaScript and Python files at runtime through file:// references in the vars context. Using Node.js and full stack development skills, Naoki engineered a solution that preserved all file:// references, allowing for consistent and flexible runtime loading without manual script integration. This approach expanded the modularity of prompt workflows and reduced the need for hardcoded scripts, making it easier to extend prompts across different languages. The work was focused, minimally invasive, and improved the repository’s runtime flexibility while maintaining a contained scope.