import polka from 'polka'; import * as sapper from '@sapper/server'; const { PORT } = process.env; polka() .use((req, res, next) => { req.hello = 'hello'; res.locals = { name: 'world' }; next(); }) .use( sapper.middleware({ session: (req, res) => ({ title: `${req.hello} ${res.locals.name}` }) }) ) .listen(PORT);