Key Node.js Debugging Tools Every Developer Should Know

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Node.js offers several built-in and third-party debugging tools that go far beyond the commonly used console.log approach. Developers can use the --inspect flag with Chrome DevTools to access graphical debugging features like breakpoints, call stacks, and scope inspection. The debug npm package enables namespaced, toggleable logging that keeps production consoles clean, while global handlers for unhandledRejection and uncaughtException help catch silent failures. Tools like --trace-warnings, process.memoryUsage(), and the v8 module assist in diagnosing memory issues and deprecation warnings. For complex async code, the async_hooks module can track async resource lifecycles, and util.inspect allows full inspection of deeply nested objects.

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