Effective debugging saves development time. Here's how to debug Node.js applications.
Console Methods
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Debugger Statement
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VS Code Debugging
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Error Stack Traces
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Memory Debugging
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Performance Profiling
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Async Debugging
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HTTP Debugging
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Production Debugging
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Debugging Tips
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Best Practices
Development:
✓ Use VS Code debugger
✓ Set meaningful breakpoints
✓ Use conditional breakpoints
✓ Enable source maps
Logging:
✓ Use structured logging
✓ Include context (request IDs)
✓ Log at appropriate levels
✓ Don't log sensitive data
Production:
✓ Set up error tracking
✓ Use proper logging service
✓ Monitor memory and CPU
✓ Enable remote debugging carefully
Conclusion
Effective debugging combines multiple techniques: console methods for quick checks, debuggers for stepping through code, profilers for performance issues, and proper logging for production. Master VS Code debugging, use Chrome DevTools for profiling, and set up robust error tracking for production applications.