const fastify = require("fastify")(); const PORT = process.env.PORT || 3000; fastify.get("/", async (request, reply) => { return { message: "Hello world!" }; }); const startServer = async () => { try { await fastify.listen(PORT); console.log(`server listening on ${fastify.server.address().port}`); } catch (err) { console.error(err); process.exit(1); } }; startServer();