Debugging JavaScript in embedded V8 engine

Question

I'm integrating V8 JavaScript engine inside my C++ application. What are the current options to debug JavaScript code executed inside V8 engine?

I would like to use Visual Studio Code with chrome-debug extension https://github.com/Microsoft/vscode-chrome-debug but can't figure out how to enable remote debugging inside V8 engine?

PS: In V8's embedder guide https://github.com/v8/v8/wiki/Debugging%20Protocol I can see message debug protocol for out-of-process debugging is no longer maintained.

Roman Kolesnikov · Accepted Answer · 2016-07-09 18:13:09Z

3

Because vscode-chrome-debug support Node.js debugging I decided to use node.js debug-agent code to expose TCP port (5858 by default) for V8 debug protocol https://github.com/nodejs/node/blob/master/src/debug-agent.cc

answered Jul 9, 2016 at 18:13

Roman Kolesnikov

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2 Comments

xaxxon Over a year ago

Was it difficult to integrate with a standalone non-node app?

Roman Kolesnikov Over a year ago

Not really. We just take node, turn project artifact to dll library add javascript entry point via function called from main app. You can look at our efforts here: github.com/BazisSoft/node-delphi. Feel free to ask Let0s for assistance.

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