Code Review Best Practices: Guidelines and Checklists

Code Review Checklist

Functionality

• [ ] Does the code work as intended?
• [ ] Are all edge cases handled?
• [ ] Is error handling appropriate?

Code Quality

• [ ] Is the code readable?
• [ ] Are variable names meaningful?
• [ ] Is there unnecessary complexity?

Testing

• [ ] Are there tests for new code?
• [ ] Do tests cover edge cases?
• [ ] Are tests maintainable?

Best Practices

// GOOD: Clear intent
async function fetchUserData(userId: string) {
  const response = await fetch(`/api/users/${userId}`);
  if (!response.ok) {
    throw new Error('Failed to fetch user data');
  }
  return response.json();
}

// BAD: Unclear intent
async function get(u: string) {
  const x = await fetch('/api/' + u);
  return x.json();
}

Conclusion

Effective code reviews improve code quality and team knowledge.