Worked on the resend/react-email repository to enhance build reliability and asset packaging for preview environments, focusing on the CLI development workflow using TypeScript. Addressed a critical issue in the CLI build process by correcting a typographical error in a variable name, ensuring that asset copying references the correct package location. This fix reduced the risk of runtime errors during development and staging by improving the accuracy of asset management. The work demonstrated attention to detail in maintaining robust build processes and highlighted proficiency in CLI tooling and TypeScript. No new features were released during this period, with efforts centered on stability.