How to open a debug session/connection with Hermes API ?

[JoshMarler]

Problem

We've recently integrated the hermes library over at react-juce: https://github.com/nick-thompson/react-juce/blob/master/react_juce/core/EcmascriptEngine_Hermes.cpp

react-juce provides an abstract EcmascriptEngine type with a few different impls for Duktape and Hermes etc.

We provide a EcmascriptEngine::debuggerAttach call for users which launches a debug session and awaits attach from some debug client, i.e. vscode, chrome debugger etc.

Duktape provides a fairly simple route in for this which opens up a tcp connection ready for any client implementing the Duktape debug protocool:

https://github.com/nick-thompson/react-juce/blob/master/react_juce/core/EcmascriptEngine_Duktape.cpp#L373

Would anyone be able to point me in the right direction for implementing such functionality with the hermes api/Debugger?

I'm currently searching through sources trying to find some insight into how I might use the Hermes Debugger object to open up a debug session on some port for the chrome debugger similar to the experience provided by React Native. The solution isn't jumping out at me!

Is this essentially a case of needing to implement the debug APIs in a similar fashion to the hdb tool so that our EcmascriptEngine class may act as a debug host/proxy ?

Thanks

[neildhar]

Hi @JoshMarler, for your reference, RN's Hermes chrome debugger integration is implemented here. As you suggest, you'll need to parse the requests coming in over the network and plumb them through to the lower level DebuggerAPI we expose, like the hdb tool.

[JoshMarler]

Excellent, thanks for the info @neildhar