(sentry) use tunnel to circumvent tracker blocking

see: https://docs.sentry.io/platforms/javascript/troubleshooting/, Dealing with Ad-Blockers
code inspired from: https://github.com/BLOCKMATERIAL/sentry-tunnel-using-node/blob/main/routes/tunnel.js

nuxt.config.ts

@@ -242,6 +242,9 @@ const nuxtConfig: NuxtConfig = {
                 return event;
             },
         },
+        clientConfig: {
+            tunnel: '/api/sentry/tunnel',
+        },
     },
     publicRuntimeConfig: {
         ...config,

server/index.ts

@@ -42,6 +42,7 @@ import calendarRoute from './routes/calendar.ts';
 import translationsRoute from './routes/translations.ts';
 import subscriptionRoute from './routes/subscription.ts';
 import discord from './routes/discord.ts';
+import sentryRoute from './routes/sentry.ts';
 
 const MemoryStore = memorystore(session);
 
@@ -60,6 +61,10 @@ app.use(express.json({
     },
 }));
 app.use(express.urlencoded({ extended: true }));
+app.use(express.raw({
+    limit: '10 MB',
+    type: 'text/plain',
+}));
 app.use(cookieParser());
 app.use(session({
     secret: process.env.SECRET!,
@@ -179,6 +184,7 @@ app.use(calendarRoute);
 app.use(translationsRoute);
 app.use(subscriptionRoute);
 app.use(discord);
+app.use(sentryRoute);
 
 app.use(Sentry.Handlers.errorHandler());
 

server/routes/sentry.ts

@@ -0,0 +1,30 @@
+import { Router } from 'express';
+
+import { handleErrorAsync } from '~/src/helpers.ts';
+
+const router = Router();
+
+router.post('/sentry/tunnel', handleErrorAsync(async (req, res) => {
+    const envelope = req.body.toString('utf-8');
+
+    const piece = envelope.slice(0, envelope.indexOf('\n'));
+    const header = JSON.parse(piece);
+
+    if (header.dsn !== process.env.SENTRY_DSN) {
+        return res.status(400).send({ message: `Invalid Sentry DSN: ${header.dsn}` });
+    }
+
+    const dsn = new URL(header.dsn);
+
+    const url = `https://${dsn.hostname}/api/${dsn.pathname.substring(1)}/envelope/`;
+    const response = await fetch(url, {
+        method: 'POST',
+        body: envelope,
+        headers: {
+            'Content-Type': 'application/x-sentry-envelope',
+        },
+    });
+    return res.status(response.status).send(response.body);
+}));
+
+export default router;