'use strict' const fastify = require('../fastify')() const opts = { schema: { response: { '2xx': { type: 'object', properties: { greet: { type: 'string' } } } } } } fastify.register(function (instance, options, next) { // the route will be '/english/hello' instance.get('/hello', opts, (req, reply) => { reply.send({ greet: 'hello' }) }) next() }, { prefix: '/english' }) fastify.register(function (instance, options, next) { // the route will be '/italian/hello' instance.get('/hello', opts, (req, reply) => { reply.send({ greet: 'ciao' }) }) next() }, { prefix: '/italian' }) fastify.listen(8000, function (err) { if (err) { throw err } console.log(`server listening on ${fastify.server.address().port}`) })