Node.js Inspector Module Guide

The inspector module provides an API for interacting with the V8 inspector. Here's how to use it for debugging and profiling.

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

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.

Node.js Inspector Module Guide

Basic Usage#

Session API#

CPU Profiling#

Heap Snapshot#

Memory Profiling#

Code Coverage#

Breakpoints#

Evaluate Expressions#

Call Stack Inspection#

Wrapper Utility#

Production Debugging#

Best Practices#

Conclusion#

Share this article

Related articles

Node.js inspector Module Guide

Debugging Node.js Applications

Node.js Debugging Techniques