Developers waste minutes watching TypeScript compile before every Lambda deploy, even though the code never runs with types. By swapping ts-node for a combined esbuild + tsc --noEmit pipeline, you keep full type safety and slash build time. The result is a Lambda that talks to Claude with zero‑runtime overhead. Why the Traditional ts-node/tsc Build Is a Bottleneck When you write a Lambda in TypeScript you usually run ts-node (a tool that compiles on‑the‑fly) during local test...