Worked on optimizing performance and reliability in the vitejs/vite repository by improving DNS result ordering during module resolution. Addressed asynchronous overhead by replacing the previous promises-based DNS ordering path with Node.js’s synchronous dns.getDefaultResultOrder API, resulting in more deterministic and faster DNS resolution. This change enhanced startup speed and build stability for Vite users, directly addressing a tracked issue. The work was implemented using TypeScript and Node.js, reflecting a focus on core tooling and full stack development. The approach demonstrated attention to low-level system behavior and contributed to a more predictable and efficient development experience within the Vite ecosystem.