ola.js

const express = require("express")

const router = express.Router()



const app = express()

const porta = 3333



function mostraOla(request, response) {

    response.send("Olá, mundo!")

}



function mostraPorta() {

    console.log("Servidor criado e rodando na porta ", porta)

}



app.use(router.get('/ola', mostraOla))

app.listen(porta, mostraPorta)