Effective debugging saves hours of frustration. Here's how to debug Node.js applications like a pro.
Console Methods
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Node.js Inspector
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VS Code Debugging
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Error Handling Debug
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Memory Debugging
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Performance Profiling
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Debug Library
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Network Debugging
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Best Practices
General:
✓ Use structured logging
✓ Add context to errors
✓ Use debug namespaces
✓ Remove debug code before production
Tools:
✓ Master VS Code debugger
✓ Learn Chrome DevTools
✓ Use source maps
✓ Profile before optimizing
Memory:
✓ Monitor memory usage
✓ Take heap snapshots
✓ Check for event listener leaks
✓ Review closure references
Conclusion
Effective debugging combines multiple techniques. Use console methods for quick checks, the inspector for complex issues, and profiling tools for performance. Structure your logging with namespaces and levels to quickly isolate problems in production.