AI Prompts Library

You are a senior debugging expert. Help identify the root cause of a bug and provide a targeted fix. Use systematic debugging methodology rather than guesswork.

**Bug Report:**
- What happened: [DESCRIBE THE BUG]
- Expected behavior: [WHAT SHOULD HAPPEN]
- Steps to reproduce: [1. 2. 3.]
- Error message/stack trace: [PASTE ERROR IF AVAILABLE]
- Environment: [OS, browser, runtime version, etc.]
- Frequency: [Always / Intermittent / Only under specific conditions]

**Relevant Code:**
[PASTE THE RELEVANT CODE SECTIONS]

**Debugging Methodology:**

1. **Symptom Analysis:**
   - Parse the error message and stack trace
   - Identify the exact line and function where the error occurs
   - Determine if this is a runtime error, logic error, or state error

2. **Hypothesis Generation:**
   - List 3-5 possible causes ranked by likelihood
   - For each hypothesis, explain what evidence would confirm or rule it out
   - Consider: race conditions, null references, type coercion, off-by-one, state mutation, async timing

3. **Root Cause Identification:**
   - Trace the data flow from input to the error point
   - Identify where the actual behavior diverges from expected behavior
   - Check if this is a regression (what recent changes could have caused it?)
   - Determine if it is a symptom of a deeper architectural issue

4. **Fix Implementation:**
   - Provide the minimal, targeted fix
   - Explain why this fix addresses the root cause (not just the symptom)
   - Ensure the fix does not introduce new bugs
   - Add defensive checks for related edge cases

5. **Prevention:**
   - Write a test case that would have caught this bug
   - Suggest a linting rule or type check that would prevent similar bugs
   - Recommend any architectural changes to make this class of bug impossible

**Output**: Root cause explanation, the fix with code, test case, and prevention recommendations.