Common Bugs in Firebase Studio-Generated Code

Firebase Studio prioritizes getting apps working quickly, and Firestore's test mode rules are the easiest way to avoid permission errors during development. Listener cleanup requires explicit management that's easy to omit

Firebase Studio apps commonly ship with Firestore security rules in test mode (allow read, write: if true), which makes all data publicly readable and writable. Cloud Functions may have cold start latency that causes UI timeouts. Realtime Firestore listeners may not be unsubscribed on component unmount, causing memory leaks and multiple active listeners

Start by running your app through its complete user flow — sign up, use every feature, try edge cases like empty inputs and invalid data. Most Firebase Studio bugs surface when you go off the happy path. Use your browser's developer tools to watch for console errors, failed network requests, and unhandled promise rejections. TypeScript's strict mode will catch many issues at compile time if it's not already enabled.

For async errors, wrap every server-side operation in try/catch blocks and return meaningful error messages. For state bugs, consider whether the state belongs in the URL, in a server component, or in client state — Firebase Studio often defaults to client state when server state would be more appropriate. For data fetching issues, implement proper loading and error states for every data-dependent component.

The best way to prevent Firebase Studio bugs from reaching production: enable TypeScript strict mode, add ESLint rules for common mistakes (no-floating-promises, exhaustive-deps), and write tests for critical user flows. Even basic smoke tests catch the majority of issues.