index.ts with cache control

index.ts

// TODO: replace type any for request and response
// Start writing Firebase Functions
// https://firebase.google.com/docs/functions/typescript
const functions = require('firebase-functions');

// We have to import the built version of the server middleware.
const { app } = require('../__sapper__/build/server/server');

const oneHour = 60 * 60
const oneDay = oneHour * 24
const oneWeek = oneDay * 7
const oneMonth = oneWeek * 4

app.get('/', (request: any, response: any) => {
    response.set(
      'Cache-Control',
      `public, max-age=${oneWeek}, must-revalidate, s-maxage=${oneWeek}, proxy-revalidate, stale-while-revalidate=${oneDay}, stale-if-error=${oneWeek}`
    );
    response.send(app);
})

exports.ssr = functions
    .region('us-central1')
    .https.onRequest(app);