I would like you to please review this code carefully and provide 
detailed feedback on potential bugs, performance issues, security 
vulnerabilities, and code quality concerns. Please also suggest 
improvements and best practices that could be applied.

Review for bugs, performance, security. Suggest improvements.

I'm experiencing an issue where the login function is not working 
properly. When users try to log in, they receive an error message. 
Could you please help me identify what might be causing this problem 
and suggest a solution? Here is the relevant code...

Login fails with error. Fix:
[code]

Expected: successful login
Actual: error message

Please write a function that will calculate the sum of two numbers. 
The function should accept two parameters and return their sum. 
Please include proper error handling and add comments explaining 
what the code does.

Function: sum two numbers
Include: error handling, comments
Language: TypeScript

I have this code that works but I think it could be improved. 
Could you please refactor it to make it more readable, maintainable, 
and efficient? Please follow best practices and modern coding standards. 
Also, please explain the changes you make.

Refactor for readability, efficiency:
[code]

Please write comprehensive documentation for this function including 
a description of what it does, the parameters it accepts, what it 
returns, and provide usage examples.

Document function:
[code]

I need you to write unit tests for this function. The tests should 
cover normal cases, edge cases, and error cases. Please use Jest 
as the testing framework and follow testing best practices.

Jest tests (normal, edge, error):
[code]

I'm getting an error in my code and I can't figure out what's wrong. 
The error message says "Cannot read property 'name' of undefined". 
Can you help me understand what's causing this and how to fix it?

Error: Cannot read property 'name' of undefined
Code: [snippet]
Fix?

This code is running slowly and I need to optimize it for better 
performance. Can you analyze it and suggest ways to make it faster? 
Please focus on algorithmic improvements and best practices.

Optimize for speed:
[code]

Review for [aspects]:
[code]

[Issue] fails with [error]
Code: [snippet]
Expected: [behavior]
Actual: [behavior]

Add [feature]:
- Input: [description]
- Output: [description]
- Edge cases: [list]

Refactor for [goals]:
[code]

[Framework] tests ([cases]):
[code]

Output JSON:
{
  "field1": "...",
  "field2": "..."
}

List 5 items:
1. ...

Code only, no explanation:
[requirements]

Summary (≤50 words):
[content]

Max 100 words
Max 10 lines
≤3 bullet points

TypeScript only
No comments
Use async/await

Functional style
No loops (use map/filter)
Immutable

❌ "Could you please write..."
✅ "Write..."

❌ "I would like you to..."
✅ "Create..."

❌ "Explain this code"
✅ "Explain in 3 bullet points"

❌ "Make it better"
✅ "Optimize for speed"

❌ "Thank you for your help"
✅ [omit]

❌ "Please and thank you"
✅ [omit]

❌ "TypeScript"
✅ "TS"

❌ "JavaScript"
✅ "JS"

❌ "database"
✅ "DB"

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Cost per 1000 requests: $4.75

Average prompt: 15 tokens
Cost per 1000 requests: $0.75
Savings: 84%

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