import polka from 'polka'; import * as sapper from '@sapper/server'; const { PORT } = process.env; polka() .use((req, res, next) => { // set test cookie res.setHeader('Set-Cookie', ['a=1; Max-Age=3600', 'b=2; Max-Age=3600']); next(); }) .use(sapper.middleware()) .listen(PORT);