The inspector module provides an API for interacting with the V8 inspector. Here's how to use it for debugging and profiling.
Basic Usage
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Session API
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CPU Profiling
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Heap Snapshot
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Memory Profiling
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Code Coverage
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Breakpoints
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Evaluate Expressions
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Call Stack Inspection
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Wrapper Utility
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Production Debugging
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Best Practices
Usage:
✓ Use for profiling
✓ Use for heap snapshots
✓ Use for code coverage
✓ Enable dynamically in production
Performance:
✓ Profile in production-like env
✓ Take multiple samples
✓ Clean up sessions
✓ Limit inspector exposure
Security:
✓ Bind to localhost only
✓ Use authentication in production
✓ Auto-close after timeout
✓ Limit exposed functionality
Avoid:
✗ Leaving inspector open
✗ Exposing to network
✗ Heavy profiling in production
✗ Ignoring session cleanup
Conclusion
The inspector module provides powerful programmatic access to V8's debugging and profiling capabilities. Use it for CPU profiling, heap snapshots, code coverage, and dynamic debugging. Always handle sessions properly and be cautious about security when enabling inspector access in production environments.