Node.js V8 Inspector for Chrome
More About Node.js V8 Inspector
1. Run a Node.js application with the --inspect command line flag.
2. Open the node-v8-inspector extension in Chrome.
3. Verify that host and port match your application's host and debug port. The default value is 9229, the same default used by Node.js. The host defaults to localhost.
4. Press Launch V8 Inspector button.
5. Debug your application.
6. Profit (optional).
Source code at https://github.com/continuationlabs/node-v8-inspector