fastify.js

// init
const fastify = require('fastify')({
	ignoreTrailingSlash: true,
	logger: true
});

fastify.route({
	method: 'GET',
	url: '/',
	handler: (request, reply) => {
		reply.header('Content-Type', 'text/html');
		reply.send('Hello Fastify!');
	}
});

fastify.listen(process.env.PORT || 3000, '::', function (err, address) {
	if (err) {
		fastify.log.error(err)
		process.exit(1)
	}
	fastify.log.info(`server listening on ${address}`)
});