Replace koa in Bun

This skill teaches your coding agent the Bun-native alternative to koa, so it stops installing it.

const server = Bun.serve({
  port: Number(process.env.PORT ?? 3000),
  routes: {
    // Static response: built once, served with zero allocation per request.
    "/health": new Response("ok"),

Bun.serve routes

Queued

Replaces express, fastify, koa

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