Helpers for Serverless Node.js Functions

This post introduces default helper methods (`request.query`, `request.cookies`, `request.body`, `response.status()`, `response.json()`, `response.send()`) to serverless Node.js functions on Vercel. These helpers simplify common operations like accessing query parameters, cookies, and request bodies, as well as setting response status codes and sending JSON or plain text responses. Benchmarks indicate a performance gain compared to basic Express.js applications.