switch to polka

app/server.js

@@ -1,29 +1,20 @@
 import fs from 'fs';
-import express from 'express';
+import polka from 'polka';
 import compression from 'compression';
 import sapper from 'sapper';
 import serve from 'serve-static';
 import fetch from 'node-fetch';
 import { routes } from './manifest/server.js';
 
-const app = express();
-
-const { PORT = 3000 } = process.env;
-
 // this allows us to do e.g. `fetch('/api/blog-posts')` on the server
 global.fetch = (url, opts) => {
 	if (url[0] === '/') url = `http://localhost:${PORT}${url}`;
 	return fetch(url, opts);
 };
 
-app.use(compression({ threshold: 0 }));
-
-app.use(serve('assets'));
-
-app.use(sapper({
-	routes
-}));
-
-app.listen(PORT, () => {
-	console.log(`listening on port ${PORT}`);
-});
+// you can also use Express
+polka()
+	.use(compression({ threshold: 0 }))
+	.use(serve('assets'))
+	.use(sapper({ routes }))
+	.listen(process.env.PORT);