import sirv from 'sirv'; import polka from 'polka'; import sapper from 'sapper'; import compression from 'compression'; import { manifest } from './manifest/server.js'; const { PORT, NODE_ENV } = process.env; const dev = NODE_ENV === 'development'; polka() // You can also use Express .use( compression({ threshold: 0 }), sirv('assets', { dev }), sapper({ manifest }) ) .listen(PORT) .catch(err => { console.log('error', err); })