Common Bugs in Tabnine-Generated Code

Tabnine learns from your codebase. If the codebase has anti-patterns, Tabnine replicates them. Its suggestions are based on pattern matching, not understanding, leading to similar-looking code with subtle differences

Subtle copy-paste-style errors: Tabnine suggests code similar to existing code but with wrong variable names, incorrect conditions, or missing parameters. It also perpetuates existing bugs — if your codebase has a bug in one place, Tabnine suggests the same pattern elsewhere

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 Tabnine 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 — Tabnine 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 Tabnine 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.