
Use your existing middleware framework (e.g. Express, Koa) in AWS Lambda
The serverless-http module allows users to wrap their API for serverless use, eliminating the need for an HTTP server, ports, or sockets. This enables developers to run their code in the same execution pipeline they are already familiar with. Supported frameworks include Node, Connect, Express, Koa, Restana, and others. The project is sponsored by Upstash.
The serverless-http module provides a convenient way for developers to adapt their APIs for serverless environments without the need for an HTTP server. With support for various frameworks and seamless integration, this tool simplifies the transition to serverless computing while highlighting the limitations and considerations unique to this environment.

Express.js is a simple Node.js framework for single, multi-page, and hybrid web applications.
ESLint is a linter for JavaScript that analyzes code to detect and report on potential problems and errors, as well as enforce consistent code style and best practices, helping developers to write cleaner, more maintainable code.
TypeScript is a superset of JavaScript, providing optional static typing, classes, interfaces, and other features that help developers write more maintainable and scalable code. TypeScript's static typing system can catch errors at compile-time, making it easier to build and maintain large applications.