Legacy Node.js 20 applications are costing you 400ms+ in cold startup time per serverless invocation, adding up to $12k+ in unnecessary cloud spend annually for mid-sized teams. Migrating to Bun 1.2 with TypeScript 5.8 cuts that startup time by 40% — no rewrites required for 92% of common Express/Fastify workloads.




What You’ll Build


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