SEV-3: reported, blocks only with --strict
You will hear about errors from your users
What goes wrong
Your app fails for a week before someone is annoyed enough to email you.
How to fix it
Add an error tracker such as Sentry on both the client and the server.
Check your app
npx sigshipRun it in your project. It reports this check as no-error-tracking, along with 16 others. Nothing leaves your machine.