aws/aws-cdk ? reverse-engineered prompt

Build me an open source developer toolkit for defining AWS cloud infrastructure in code.

I want a command line tool and library that let me write cloud resources in TypeScript first, then turn that code into CloudFormation templates, compare changes, and deploy them to AWS. The experience should feel simple for app developers, with reusable building blocks for common AWS services like queues, topics, storage, and compute, plus clear patterns for composing those pieces into stacks and apps.

Please include good docs, a starter example, and a clean developer workflow so someone can initialize a project, synthesize it, diff it, and deploy it. If you need to check current AWS or language docs while building, go ahead. Make it production ready, with tests, sensible defaults, and support for the main languages people use with AWS CDK.