Code Review

Use this skill when the user asks for a code review, feedback on their code, or to check code quality.

Steps

1. Understand the change — read the files or diff to understand what the code is supposed to do. Identify the scope (new feature, bug fix, refactor).

2. Check correctness

   • Does the code handle edge cases (empty input, null, zero, negative numbers)?
   • Are error states handled (try/catch, error boundaries, fallback UI)?
   • Does async code handle race conditions, cancellation, and timeouts?
   • Are there off-by-one errors in loops or array access?