Aws Lambda Typescript Integration

This handles the cold start optimization decisions you'll face when building TypeScript Lambdas. You get two paths: NestJS for dependency injection and complex APIs (500ms cold start, 100KB+ bundles) or raw TypeScript for simple handlers (under 100ms, sub-50KB bundles). Includes working handler patterns for both approaches, API Gateway and ALB integration configs, and the usual gotchas around connection pooling and bundle size. Most useful when you're past the hello world stage and need to actually ship something that won't timeout on first invocation. The deployment validation checklist is genuinely helpful.