Disallow scratch papers to be crawled by robots

app/index.js

+const path = require('path');
 const express = require('express');
 const app = express();
 
@@ -18,6 +19,9 @@ app.use((req, res, next) => {
     next();
   }
 });
+app.get('/robots.txt', (req, res) => {
+  res.sendFile(path.resolve(__dirname, '..', 'robots.txt'));
+});
 app.use(apiEndpoint, backend);
 app.use(frontend);
 

robots.txt

+User-agent: *
+Disallow: /scratch-paper/