fix sentry fastify error reporting (#101)

Co-authored-by: Miroslav Bajtoš <[email protected]>

api/lib/instrument.js

@@ -21,5 +21,16 @@ Sentry.init({
   dsn: 'https://[email protected]/4508002559393792',
   release: pkg.version,
   environment: SENTRY_ENVIRONMENT,
-  tracesSampleRate: 0.1
+  tracesSampleRate: 0.1,
+  // Ignore Fastify 4xx errors
+  // Remove once https://github.com/getsentry/sentry-javascript/pull/13198 lands
+  beforeSend (event, { originalException: err }) {
+    const isBadRequest =
+      typeof err === 'object' &&
+      err !== null &&
+      'statusCode' in err &&
+      typeof err.statusCode === 'number' &&
+      err.statusCode < 500
+    return isBadRequest ? null : event
+  }
 })