Worked on the run-llama/llama_cloud_services repository to deliver Zod v4 compatibility while maintaining full backward compatibility with Zod v3. This involved updating peer dependencies and adjusting import paths to support both versions, ensuring that existing integrations continued to function without disruption. The approach focused on careful dependency management and preservation of the API surface, minimizing friction for clients upgrading their validation libraries. Leveraged TypeScript for robust typings and used JavaScript within a Node.js and React full stack environment. The work enabled a seamless upgrade path for clients, reducing risk during validation library transitions and supporting ongoing platform stability.