const Koa = require("koa"); const Router = require("@koa/router"); const app = new Koa(); const router = new Router(); app.use(async (ctx, next) => { ctx.set("Content-type", "application/json") await next(); }) router.get("/", async (ctx) => { ctx.body = "Welcome to theKoaServer!"; }) router.get("/about", async (ctx) => { ctx.body = "This is the about page."; }) router.get("/contact", (ctx) => { ctx.body = "This is the contact page." }) app.use(router.routes()).use(router.allowedMethods()); const port = 3000; app.listen(port, () => { console.log(`Server is running on http://localhost:${port}`); })