Bun 1.4 is available in Vercel Functions. • Supports WebSockets and 𝙱𝚞𝚗.𝚜𝚎𝚛𝚟𝚎() • Supports Next.js, Elysia, Hono and others • Runs on Fluid with Active CPU billing Set "bunVersion": "1.4.x" in vercel.json to upgrade. https://vercel.com/changelog/bun-1-4-is-now-available-in-vercel-functions