Jest

This example demonstrates how to build clean, testable, and modular serverless applications on AWS using AWS SAM, Lambda Layers, and Jest. It focuses on two essential practices for scalable serverless development: Using Lambda Layers to share code across functions Using Jest to properly test each function and its dependencies By combining these two patterns, you get a powerful structure that’s maintainable, reusable, and confidently testable. Project Overview: Shared Logic + Layer for Node Modules + Testing functions/ – Your Lambda function handlers: ...